CN115193833B - Flushing device and flushing method for liquid working medium system - Google Patents
Flushing device and flushing method for liquid working medium system Download PDFInfo
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- CN115193833B CN115193833B CN202210835205.6A CN202210835205A CN115193833B CN 115193833 B CN115193833 B CN 115193833B CN 202210835205 A CN202210835205 A CN 202210835205A CN 115193833 B CN115193833 B CN 115193833B
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 608
- 239000007788 liquid Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 239000010687 lubricating oil Substances 0.000 claims description 46
- 230000003749 cleanliness Effects 0.000 claims description 6
- 239000012535 impurity Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract 1
- 238000004590 computer program Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 101100293604 Hordeum vulgare NAS7 gene Proteins 0.000 description 3
- 101100529043 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RPN9 gene Proteins 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The application discloses a flushing device and a flushing method of a liquid working medium system. The flushing device comprises a box body, a pump body, a filter body, a main conveying pipeline, a return pipeline, a multi-channel flushing pipeline and a flushing valve which is arranged corresponding to the flushing pipeline; one end of each flushing pipeline is respectively connected to a corresponding first communication position on the main conveying pipeline, and the other end of each flushing pipeline is respectively connected to a corresponding second communication position on the return pipeline; the pump body is arranged on one side of the main conveying pipeline, which is close to the tank body, and is used for pumping the liquid working medium into the flushing pipeline; the filter body is arranged on the main conveying pipeline; the flushing valve is arranged on the corresponding flushing pipeline, and the opening of the flushing valve is adjustable. The application can control the flow of the liquid working medium flowing through the corresponding flushing pipeline, and further can realize the flushing method of variable flow alternate flushing, so that the liquid working medium system is fully disturbed, the problems of dead angle impurities or particle residues and the like of the liquid working medium system are reduced, the flushing effect is improved, and the time consumed by flushing is shortened.
Description
Technical Field
The application relates to the technical field of control, in particular to a flushing device and a flushing method of a liquid working medium system.
Background
At present, the cleanliness of the turbine lubricating oil system is required to be high, and impurities and the like can enter the system in the installation process of the newly-built turbine lubricating oil system, so that a great amount of time is consumed in the engineering construction process to wash the lubricating oil pipeline, and the cleanliness requirement is met. If the lubricating oil is not thoroughly washed, impurities remain, and accidents such as tile burning and the like of the steam turbine in the running process can be possibly caused.
To solve the above problems, the conventional practice is: 1. after the lubricating oil system is installed, starting a lubricating oil pump through a conventional system to perform system large-cycle filtration flushing, wherein the flushing method needs to consume a large amount of time, dead angle impurities cannot be flushed out, and the situation that oil indexes repeatedly fluctuate occurs; 2. in the running process of the lubricating oil system, the disturbance is carried out by knocking the pipeline, but the disturbance of the medium in the actual pipeline is not obvious, and the flushing method has poor effect.
Disclosure of Invention
The application aims to overcome the defects of long flushing time and poor flushing effect in the prior art, and provides a flushing device and a flushing method of a liquid working medium system.
The application solves the technical problems by the following technical scheme:
a flushing device of a liquid working medium system comprises a box body, a pump body, a filter body, a main conveying pipeline, a return pipeline, a multi-path flushing pipeline and a flushing valve which is arranged corresponding to the flushing pipeline; wherein:
the box body is used for accommodating the liquid working medium;
one end of each flushing pipeline is respectively connected to a corresponding first communication position on the main conveying pipeline, and the other end of each flushing pipeline is respectively connected to a corresponding second communication position on the return pipeline;
the pump body is arranged on one side of the main conveying pipeline, close to the box body, and is used for pumping the liquid working medium into the flushing pipeline;
the filter body is arranged on the main conveying pipeline and is positioned between the box body and the pump body or between the pump body and a first communication position closest to the pump body;
the flushing valve is arranged on the corresponding flushing pipeline, and the opening of the flushing valve is adjustable and is used for controlling the flow of the liquid working medium flowing through the corresponding flushing pipeline.
Preferably, the liquid working medium comprises lubricating oil;
and/or the number of the groups of groups,
the filter body adopts a filter screen;
and/or the number of the groups of groups,
the number of the flushing pipelines is 4;
and/or the number of the groups of groups,
and a pressure measuring point is arranged on the main conveying pipeline.
A method of flushing a liquid working medium system, the flushing method being implemented using a flushing device of any one of the liquid working medium systems described above, the flushing method comprising:
in the flushing starting step, starting the pump body;
in the first variable flow flushing step, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow flushing on the second flushing pipeline;
in the second variable flow rate flushing step, the opening of the first flushing valve is gradually adjusted to perform variable flow rate flushing on the first flushing pipeline while maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline;
wherein the first flushing line and the second flushing line are two of the plurality of flushing lines.
Preferably, the step of adjusting the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline includes:
controlling the opening of the second flushing valve to be gradually adjusted to O 2I The duration of variable flow flushing of the second flushing pipeline is T 2I The value of I is [1, J]Wherein J is an integer greater than 1;
the step-by-step adjustment of the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline includes:
controlling the opening of the first flushing valve to be gradually adjusted to O 1P The duration of variable flow flushing of the first flushing pipeline is T 1P P has a value of [1, Q]Wherein Q is an integer greater than 1.
Preferably, J and Q are each 4;
the step-by-step adjustment of the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline includes:
controlling the opening of the second flushing valve to be gradually adjusted to 30%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 50%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 70%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 100%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
the step-by-step adjustment of the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline includes:
controlling the opening of the first flushing valve to be gradually adjusted to 30%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the first flushing valve to be gradually adjusted to 50%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the first flushing valve to be gradually adjusted to 70%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
and controlling the opening of the first flushing valve to be gradually adjusted to 100%, and flushing the first flushing pipeline for 4 hours in variable flow.
Preferably, before the first variable flow flushing step and the second variable flow flushing step, the flushing method further includes:
and in the constant flow flushing step, maintaining the opening of the first flushing valve to be a first original value, maintaining the opening of the second flushing valve to be a second original value, and flushing the first flushing pipeline and the second flushing pipeline.
Preferably, the first original value and the second original value take 100%.
Preferably, the multiple paths of flushing pipelines comprise 2*N paths, wherein N is a positive integer, 2*N paths of flushing pipelines are divided into N groups, each group comprises two paths of flushing pipelines, and the first variable flow flushing step and the second variable flow flushing step are sequentially executed for each of the N groups of flushing pipelines;
or,
the multiple paths of flushing pipelines comprise (2 x N+1) paths, wherein N is a positive integer, (2 x N+1) paths of flushing pipelines are divided into N groups, each group comprises two paths of flushing pipelines, one path of flushing pipelines which are not included in the N groups and one path of flushing pipelines which are included in the N groups form (N+1) th group of flushing pipelines, and the first variable flow flushing step and the second variable flow flushing step are sequentially executed for each group of flushing pipelines in the (N+1) th group.
Preferably, when the pump body continuously works for a preset period of time, the flushing method is stopped to clean the filter body;
and/or the number of the groups of groups,
and when the cleanliness of the liquid working medium meets the preset condition, terminating executing the flushing method.
A flushing system of a liquid working medium system, the flushing system being implemented with a flushing device of any one of the liquid working medium systems described above, the flushing system being for:
in the flushing start-up phase, starting the pump body;
in the first variable flow rate flushing stage, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow rate flushing on the second flushing pipeline;
in a second variable flow flushing stage, maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline, and gradually adjusting the opening of the first flushing valve to flush the first flushing pipeline in a variable flow manner;
wherein the first flushing line and the second flushing line are two of the plurality of flushing lines.
A computer program product comprising a computer program which when executed by a processor performs the steps of a flushing method of any of the liquid working medium systems described above.
An electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements a flushing method of any one of the above liquid working medium systems when executing the computer program.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the flushing method of any of the liquid working medium systems described above.
The application has the positive progress effects that: in the flushing device of the liquid working medium system, the opening of the flushing valve corresponding to the flushing pipeline is adjustable, so that the flushing device can be used for controlling the flow of the liquid working medium flowing through the corresponding flushing pipeline, further realizing a flushing method of variable flow alternate flushing, fully disturbing the liquid working medium system, reducing the problems of dead angle impurities or particulate residues and the like of the liquid working medium system, improving the flushing effect, shortening the flushing time, and being beneficial to protecting the long-period stable operation of equipment adopting the flushing device, reducing the overhaul work of the equipment and improving the economic benefit.
Drawings
Fig. 1 is a schematic structural view of a flushing device of a liquid working medium system according to embodiment 1 of the present application.
Fig. 2 is a partial flow chart of a flushing method of the liquid working medium system according to embodiment 2 of the present application.
Fig. 3 is a flow chart of a flushing method of the liquid working medium system according to embodiment 2 of the present application.
Fig. 4 is a schematic structural diagram of an electronic device according to embodiment 5 of the present application.
Detailed Description
The application is further illustrated by means of the following examples, which are not intended to limit the scope of the application.
Example 1
The present embodiment provides a flushing device of a liquid working medium system, wherein the liquid working medium may comprise, for example, lubricating oil, i.e., the flushing device of the present embodiment may be applied to a lubricating oil system, further, the lubricating oil system may be applied to a steam turbine.
Fig. 1 shows a schematic structural view of the present embodiment. Referring to fig. 1, the flushing device of the present embodiment includes a tank, a pump body, a filter body, a main feed pipe, a return pipe, a multi-path flushing pipe, and a flushing valve corresponding to the flushing pipe. In particular, in fig. 1, the flushing line comprises four lines, respectively flushing lines 1-4, it being understood that the present embodiment is not intended to limit the number of lines of the flushing line.
In particular, in the present embodiment, the tank is configured to hold a liquid working medium, and one end of each flushing pipeline is connected to a corresponding first connection position (X 1 -X 4 ) The other end of each flushing line is connected to a corresponding second communication position (Y 1 -Y 4 ) The pump body is arranged on one side of the main delivery pipeline, which is close to the tank body, and is used for pumping the liquid working medium into the flushing pipeline, namely, after the liquid working medium is pumped out of the tank body through the pump body, the liquid working medium flows to the main delivery pipeline, flows to the flushing pipeline and finally flows back to the tank body through the return pipeline.
In the present embodiment, the filter is provided on the main feed line, and may be located between the tank and the pump body, or may be located at a first communication position (X 1 ) In the present embodiment, the filter body may be implemented by a filter screen.
In this embodiment, the flushing valves (flushing valves 1-4) are provided on the corresponding flushing lines, and the opening degree of the flushing valves is adjustable for controlling the flow rate of the liquid working medium flowing through the corresponding flushing lines.
In this embodiment, the main pipeline may further be provided with a pressure measurement point to measure the pressure of the main pipeline.
In the flushing device of the liquid working medium system provided by the embodiment, the opening of the flushing valve corresponding to the flushing pipeline is adjustable, so that the flushing device can be used for controlling the flow of the liquid working medium flowing through the corresponding flushing pipeline, further realizing a flushing method of variable flow alternate flushing, fully disturbing the liquid working medium system, reducing the problems of dead angle impurities or particulate matter residues and the like of the liquid working medium system, improving the flushing effect, shortening the flushing time, and in addition, being beneficial to protecting the long-period stable operation of equipment adopting the flushing device provided by the application, reducing the overhaul work of the equipment and improving the economic benefit.
Example 2
The present embodiment provides a flushing method of a liquid working medium system, which is implemented by using the flushing device of the liquid working medium system provided in embodiment 1. Fig. 2 shows a partial flowchart of the present embodiment, and referring to fig. 2, the flushing method of the present embodiment includes:
s21, starting the pump body in the flushing starting step;
s22, in the first variable flow flushing step, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow flushing on the second flushing pipeline;
s23, in the second variable flow flushing step, the opening of the first flushing valve is gradually adjusted to perform variable flow flushing on the first flushing pipeline while maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline;
wherein the first flushing pipeline and the second flushing pipeline are two paths in the multipath flushing pipeline.
In step S22 of this embodiment, the step of gradually adjusting the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline may include controlling the opening of the second flushing valve to be gradually adjusted to O 2I The step of flushing the second flushing pipeline with variable flow rate for a period of time T 2I The value of I is [1, J]Wherein J is an integer greater than 1. In step S23 of the present embodiment, the step of gradually adjusting the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline may include controlling the opening of the first flushing valve to be gradually adjusted to O 1P The step of carrying out variable flow flushing on the first flushing pipeline for a time length of T 1P P has a value of [1, Q]Wherein Q is an integer greater than 1.
In this embodiment, the values of J and Q may be determined according to practical applications, and the values of J and Q may be the same or different. Specifically, taking the adjustment of the opening of the second flushing valve to realize variable flow alternate flushing as an example, it should be understood that in the process of adjusting the opening of the second flushing valve, variable flow flushing is also performed on the second flushing pipeline, and the flow dynamically changes along with the adjustment of the opening, and after the adjustment of the opening of the second flushing valve is completed, the flow of the second flushing pipeline gradually tends to be in a stable state, and the current stable state is changed compared with the previous stable state or the flow corresponding to the previous state, so that variable flow flushing is performed, and the flow of the second flushing pipeline shows alternate change along with the adjustment state of the second flushing valve, that is, variable flow alternate flushing is realized.
For example, when the value of J is 4, in step S22, the opening of the second flushing valve corresponding to the second flushing pipeline is gradually adjusted to perform variable flow flushing on the second flushing pipeline, which may specifically include: controlling the opening of the second flushing valve to be gradually adjusted to 30%; controlling the opening of the second flushing valve to be gradually adjusted to 50%; controlling the opening of the second flushing valve to be gradually adjusted to 70%; the opening of the second flushing valve is controlled to be gradually adjusted to 100 percent. The duration of variable flow flushing of the second flushing pipelines corresponding to different openings (30%, 50%, 70% and 100%) can be 4 hours. Further, in this embodiment, the flow ranges of the liquid working media corresponding to different openings may be defined.
For another example, when the Q value is 4, in step S23, the opening of the first flushing valve is gradually adjusted to perform variable flow flushing on the first flushing pipeline, which may specifically include: controlling the opening of the first flushing valve to be gradually adjusted to 30%; controlling the opening of the first flushing valve to be gradually adjusted to 50%; controlling the opening of the first flushing valve to be gradually adjusted to 70%; the opening of the first flushing valve is controlled to be gradually adjusted to 100 percent. The duration of variable flow flushing of the first flushing pipelines corresponding to different openings (30%, 50%, 70% and 100%) can be 4 hours. Further, in this embodiment, the flow ranges of the liquid working media corresponding to different openings may be defined.
Based on this, the flushing method provided in this embodiment controls the flushing state by controlling the flushing valve, has a larger flow variation characteristic, and realizes better distributed flushing, and can shorten the time consumed for flushing. In addition, the temporary tube used in the present embodiment has a small workload and can be restored in a short time after the completion of flushing.
Before steps S22 and S23 of this embodiment, the flushing method may further include a constant flow flushing step, in which the first flushing pipe and the second flushing pipe are flushed while maintaining the opening of the first flushing valve at a first original value and the opening of the second flushing valve at a second original value. The first original value and the second original value may be determined according to practical applications, and the first original value and the second original value may be the same or different. For example, both the first raw value and the second raw value may take a value of 100% to achieve a high flow flush.
In this embodiment, the number of flushing lines may be determined according to the actual application, and may be either even or odd. For example, when the number of flushing lines is an even number, the number is counted as 2*N, where N is a positive integer, 2*N flushing lines are divided into N groups, each group includes two flushing lines, the first variable flow flushing step and the second variable flow flushing step are sequentially performed for each of the N groups of flushing lines, and furthermore, each of the N groups of flushing lines may also sequentially perform the constant flow flushing step. For another example, when the number of flushing lines is an odd number, the number of flushing lines is denoted as (2×n+1), where N is a positive integer, the (2×n+1) flushing lines are divided into N groups, each group includes two flushing lines, one flushing line that is not included in the N groups and one flushing line that is included in the N groups form an (n+1) th group flushing line, the first variable flow flushing step and the second variable flow flushing step are sequentially performed for each of the (n+1) groups flushing lines, and in addition, the constant flow flushing step may be sequentially performed for each of the (n+1) groups flushing lines.
In this embodiment, the method may further include stopping the step of executing the flushing method when the pump body continuously works for a preset period of time, and checking and cleaning the filter body during the stopping process to remove the impurities filtered out in the current stage, and then continuing to execute the flushing method, where the preset period of time may be determined according to practical application, and may be 48 hours, for example.
And circulating in this way until the cleanliness of the liquid working medium meets the preset condition, and terminating executing the flushing method of the embodiment, wherein the preset condition can be determined according to practical application, for example, when the liquid working medium is lubricating oil, the preset condition can be that the oil quality of the lubricating oil reaches NAS7 grade.
On the basis of the flushing device of the liquid working medium system provided by the embodiment 1, the flushing method of variable flow alternate flushing is realized, so that the liquid working medium system is fully disturbed to reduce the dead angle impurities or particulate residues of the liquid working medium system, the flushing effect is improved, the flushing time is shortened, in addition, the long-period stable operation of equipment adopting the flushing device provided by the application is also facilitated, the overhaul work of the equipment is reduced, and the economic benefit is improved.
Fig. 3 shows an implementation of the flushing method of the present embodiment when the number of flushing lines is 4 and the liquid working medium is lubricating oil. Specifically, referring to fig. 3, the flushing method of the present embodiment may include:
s1, an operator checks the flushing device to enable the flushing device to be in a standby state;
s2, opening the lubricating oil flushing valve 1-4, starting the lubricating oil pump body, performing full-flow flushing, and checking the pipeline pressure of the lubricating oil main pipeline to be 0.3-0.5Mpa;
s3, after the step S2 is carried out for 24 hours, the lubricating oil flushing valve 1-2 is closed, and the lubricating oil flushing valve 3-4 is maintained to be in a full-open state for flushing;
s4, after the step S3 is carried out for 4 hours, maintaining the full-open state of the lubricating oil flushing valve 4, gradually closing the lubricating oil flushing valve by 3 to 30 percent, and carrying out variable flow flushing, wherein the flow range of the lubricating oil can be 5t/h to 15t/h;
s5, after the step S4 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 3 to 50 percent, and continuing to carry out variable flow flushing, wherein the flow range of the lubricating oil can be 15t/h-25t/h;
s6, after the step S5 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 3 to 70 percent, and continuing to carry out variable flow flushing, wherein the flow range of the lubricating oil can be 25t/h-35t/h;
s7, after the step S6 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 3 to 100 percent, and carrying out variable flow flushing, wherein the flow range of the lubricating oil can be 35t/h-40t/h;
after the step S7 is carried out for 4 hours, the variable flow flushing flow of the lubricating oil flushing pipeline 3 through the lubricating oil flushing valve is ended;
s8, maintaining the full-open state of the lubricating oil flushing valve 3, gradually closing the lubricating oil flushing valve 4 to 30 percent, and flushing with variable flow;
s9, after the step S8 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 4 to 50 percent, and continuously carrying out variable flow flushing;
s10, after the step S9 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 4 to 70 percent, and continuously carrying out variable flow flushing;
s11, after the step S10 is carried out for 4 hours, gradually opening a lubricating oil flushing valve for 4 to 100 percent, and carrying out variable flow flushing;
after the step S12 is carried out for 4 hours, the variable flow flushing flow of the lubricating oil flushing pipeline 4 through the lubricating oil flushing valve is ended;
s12, closing the lubricating oil flushing valve 3-4, maintaining the lubricating oil flushing valve 1-2 in a fully opened state, and continuing flushing;
and S13, after the step S12 is carried out for 4 hours, the lubricating oil flushing valve 1-2 is controlled according to the step S4-S12, and the lubricating oil flushing pipeline 1-2 is subjected to variable flow flushing.
S14, circularly carrying out variable flow alternating flushing of S2-S13, cleaning a filter body every 48 hours, cleaning and recovering, and checking whether impurities exist; if yes, executing step S15; if not, returning to the step S3;
s15, judging whether the oil quality of the lubricating oil reaches NAS7 level; if yes, the flushing is completed, and if not, the step returns to the step S3.
Example 3
The present embodiment provides a flushing system of a liquid working medium system, which is implemented by using the flushing device of the liquid working medium system provided in embodiment 1. The flushing system of this embodiment is for:
in the flushing start-up phase, starting the pump body;
in the first variable flow flushing stage, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow flushing on the second flushing pipeline;
in the second variable flow rate flushing stage, the opening of the first flushing valve is gradually adjusted to perform variable flow rate flushing on the first flushing pipeline while maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline;
wherein the first flushing pipeline and the second flushing pipeline are two paths in the multipath flushing pipeline.
In this embodiment, the flushing system gradually adjusts the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline, which may be specifically implemented by controlling the opening of the second flushing valve to be gradually adjusted to O 2I The duration of variable flow flushing of the second flushing pipeline is T 2I The value of I is [1, J]J is an integer greater than 1. In this embodiment, the flushing system gradually adjusts the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline, which may be specifically implemented by controlling the opening of the first flushing valve to be gradually adjusted to O 1P The duration of variable flow flushing of the first flushing pipeline is T 1P P has a value of [1, Q]Q is an integer greater than 1.
In this embodiment, the values of J and Q may be determined according to practical applications, and the values of J and Q may be the same or different. Specifically, taking the adjustment of the opening of the second flushing valve to realize variable flow alternate flushing as an example, it should be understood that in the process of adjusting the opening of the second flushing valve, variable flow flushing is also performed on the second flushing pipeline, and the flow dynamically changes along with the adjustment of the opening, and after the adjustment of the opening of the second flushing valve is completed, the flow of the second flushing pipeline gradually tends to be in a stable state, and the current stable state is changed compared with the previous stable state or the flow corresponding to the previous state, so that variable flow flushing is performed, and the flow of the second flushing pipeline shows alternate change along with the adjustment state of the second flushing valve, that is, variable flow alternate flushing is realized.
For example, when the value of J is 4, the flushing system gradually adjusts the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline, which may be specifically implemented as: controlling the opening of the second flushing valve to be gradually adjusted to 30%; controlling the opening of the second flushing valve to be gradually adjusted to 50%; controlling the opening of the second flushing valve to be gradually adjusted to 70%; the opening of the second flushing valve is controlled to be gradually adjusted to 100 percent. The duration of variable flow flushing of the second flushing pipelines corresponding to different openings (30%, 50%, 70% and 100%) can be 4 hours. Further, in this embodiment, the flow ranges of the liquid working media corresponding to different openings may be defined.
For another example, when the Q value is 4, the flushing system gradually adjusts the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline, which may be specifically implemented as: controlling the opening of the first flushing valve to be gradually adjusted to 30%; controlling the opening of the first flushing valve to be gradually adjusted to 50%; controlling the opening of the first flushing valve to be gradually adjusted to 70%; the opening of the first flushing valve is controlled to be gradually adjusted to 100 percent. The duration of variable flow flushing of the first flushing pipelines corresponding to different openings (30%, 50%, 70% and 100%) can be 4 hours. Further, in this embodiment, the flow ranges of the liquid working media corresponding to different openings may be defined.
Based on this, the flushing system provided in this embodiment controls the flushing state by controlling the flushing valve, has a larger flow variation characteristic, and realizes better distributed flushing, and can shorten the time consumed for flushing. In addition, the temporary tube used in the present embodiment has a small workload and can be restored in a short time after the completion of flushing.
Before the first variable flow flushing stage and the second variable flow flushing stage, a constant flow flushing stage may be further included, in which the flushing system needs to maintain the opening of the first flushing valve at a first original value, maintain the opening of the second flushing valve at a second original value, and flush the first flushing pipeline and the second flushing pipeline. The first original value and the second original value may be determined according to practical applications, and the first original value and the second original value may be the same or different. For example, both the first raw value and the second raw value may take a value of 100% to achieve a high flow flush.
In this embodiment, the number of flushing lines may be determined according to the actual application, and may be either even or odd. For example, when the number of flushing lines is even, the number of lines is counted as 2*N, where N is a positive integer, the 2*N lines are divided into N groups, each group including two lines, and the flushing system is invoked such that each of the N groups of flushing lines is sequentially subjected to a first variable flow flushing stage and a second variable flow flushing stage, and in addition, each of the N groups of flushing lines may be sequentially subjected to a constant flow flushing stage. For another example, when the number of flushing lines is an odd number, the number of flushing lines is denoted as (2×n+1), where N is a positive integer, the (2×n+1) flushing lines are divided into N groups, each group includes two flushing lines, one flushing line that is not included in the N groups and one flushing line that is included in the N groups form an (n+1) th group flushing line, and the flushing system is invoked such that each of the (n+1) th groups flushing lines sequentially undergoes a first variable flow flushing stage and a second variable flow flushing stage, and in addition, each of the (n+1) th groups flushing lines may sequentially undergo a constant flow flushing stage.
In this embodiment, the flushing system may also be used to stop the calling when the pump body continuously works for a preset period of time, and the filtering body may be checked and cleaned during the stopping process to remove the impurities filtered in the current stage, and then the flushing system is continuously called, where the preset period of time may be determined according to the actual application, for example, may be 48 hours.
And circulating in this way until the cleanliness of the liquid working medium meets the preset condition, and terminating invoking the flushing system of the embodiment, wherein the preset condition can be determined according to practical application, for example, when the liquid working medium is lubricating oil, the preset condition can be that the oil quality of the lubricating oil reaches NAS7 level.
On the basis of the flushing device of the liquid working medium system provided by the embodiment 1, the flushing system with variable flow alternate flushing is realized, so that the liquid working medium system is fully disturbed to reduce the dead angle impurities or particulate residues of the liquid working medium system, the flushing effect is improved, the flushing time is shortened, in addition, the long-period stable operation of equipment adopting the flushing device provided by the application is also facilitated, the overhaul work of the equipment is reduced, and the economic benefit is improved.
Example 4
This embodiment provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the flushing method of the liquid working medium system of embodiment 2.
Example 5
The present embodiment provides an electronic device, which may be expressed in the form of a computing device (for example, may be a server device), including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, where the processor may implement the flushing method of the liquid working medium system provided in embodiment 2 when executing the computer program.
Fig. 4 shows a schematic diagram of the hardware structure of the present embodiment, and as shown in fig. 4, the electronic device 9 specifically includes:
at least one processor 91, at least one memory 92, and a bus 93 for connecting the different system components (including the processor 91 and the memory 92), wherein:
the bus 93 includes a data bus, an address bus, and a control bus.
The memory 92 includes volatile memory such as Random Access Memory (RAM) 921 and/or cache memory 922, and may further include Read Only Memory (ROM) 923.
Memory 92 also includes a program/utility 925 having a set (at least one) of program modules 924, such program modules 924 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Processor 91 executes various functional applications and data processing, such as the flushing method of the liquid working substance system provided in embodiment 2 of the present application, by running a computer program stored in memory 92.
The electronic device 9 may further communicate with one or more external devices 94 (e.g., keyboard, pointing device, etc.). Such communication may occur through an input/output (I/O) interface 95. Also, the electronic device 9 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through a network adapter 96. The network adapter 96 communicates with other modules of the electronic device 9 via the bus 93. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the electronic device 9, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, data backup storage systems, and the like.
It should be noted that although several units/modules or sub-units/modules of an electronic device are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more units/modules described above may be embodied in one unit/module in accordance with embodiments of the present application. Conversely, the features and functions of one unit/module described above may be further divided into ones that are embodied by a plurality of units/modules.
Example 6
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the flushing method of the liquid working fluid system provided by embodiment 2.
More specifically, among others, readable storage media may be employed including, but not limited to: portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible embodiment, the application may also be realized in the form of a program product comprising program code for causing a terminal device to carry out the steps of the flushing method for implementing the liquid working medium system as described in example 2, when said program product is run on the terminal device.
Wherein the program code for carrying out the application may be written in any combination of one or more programming languages, which program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on the remote device or entirely on the remote device.
While specific embodiments of the application have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the application is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the application, but such changes and modifications fall within the scope of the application.
Claims (10)
1. The flushing method of the liquid working medium system is characterized by being realized by a flushing device of the liquid working medium system, wherein the flushing device comprises a box body, a pump body, a filter body, a main conveying pipeline, a return pipeline, a multi-channel flushing pipeline and a flushing valve which is arranged corresponding to the flushing pipeline; wherein:
the box body is used for accommodating the liquid working medium;
one end of each flushing pipeline is respectively connected to a corresponding first communication position on the main conveying pipeline, and the other end of each flushing pipeline is respectively connected to a corresponding second communication position on the return pipeline;
the pump body is arranged on one side of the main conveying pipeline, close to the box body, and is used for pumping the liquid working medium into the flushing pipeline;
the filter body is arranged on the main conveying pipeline and is positioned between the box body and the pump body or between the pump body and a first communication position closest to the pump body;
the flushing valve is arranged on the corresponding flushing pipeline, and the opening of the flushing valve is adjustable and is used for controlling the flow of the liquid working medium flowing through the corresponding flushing pipeline;
the flushing method comprises the following steps:
in the flushing starting step, starting the pump body;
in the first variable flow flushing step, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow flushing on the second flushing pipeline;
in the second variable flow rate flushing step, the opening of the first flushing valve is gradually adjusted to perform variable flow rate flushing on the first flushing pipeline while maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline;
wherein the first flushing line and the second flushing line are two of the plurality of flushing lines.
2. The method of flushing a liquid working medium system of claim 1 wherein said liquid working medium comprises lubricating oil;
and/or the number of the groups of groups,
the filter body adopts a filter screen;
and/or the number of the groups of groups,
the number of the flushing pipelines is 4;
and/or the number of the groups of groups,
and a pressure measuring point is arranged on the main conveying pipeline.
3. The method for flushing a liquid working medium system according to claim 1, wherein gradually adjusting the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline comprises:
controlling the opening of the second flushing valve to be gradually adjusted to O 2I Changing the second flushing pipelineThe flow flushing time is T 2I The value of I is [1, J]Wherein J is an integer greater than 1;
the step-by-step adjustment of the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline includes:
controlling the opening of the first flushing valve to be gradually adjusted to O 1P The duration of variable flow flushing of the first flushing pipeline is T 1P P has a value of [1, Q]Wherein Q is an integer greater than 1.
4. A method of flushing a liquid working medium system as recited in claim 3 wherein J and Q each have a value of 4;
the step-by-step adjustment of the opening of the second flushing valve corresponding to the second flushing pipeline to perform variable flow flushing on the second flushing pipeline includes:
controlling the opening of the second flushing valve to be gradually adjusted to 30%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 50%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 70%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the second flushing valve to be gradually adjusted to 100%, and flushing the second flushing pipeline for 4 hours in a variable flow manner;
the step-by-step adjustment of the opening of the first flushing valve to perform variable flow flushing on the first flushing pipeline includes:
controlling the opening of the first flushing valve to be gradually adjusted to 30%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the first flushing valve to be gradually adjusted to 50%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
controlling the opening of the first flushing valve to be gradually adjusted to 70%, and flushing the first flushing pipeline for 4 hours in a variable flow manner;
and controlling the opening of the first flushing valve to be gradually adjusted to 100%, and flushing the first flushing pipeline for 4 hours in variable flow.
5. The method of flushing a liquid working medium system of claim 1 wherein prior to said first variable flow flushing step and said second variable flow flushing step, said method of flushing further comprises:
and in the constant flow flushing step, maintaining the opening of the first flushing valve to be a first original value, maintaining the opening of the second flushing valve to be a second original value, and flushing the first flushing pipeline and the second flushing pipeline.
6. The method of flushing a liquid working medium system of claim 5 wherein said first original value and said second original value take on values of 100%.
7. The method of flushing a liquid medium system of claim 1, wherein a plurality of said flushing lines includes 2*N lines, wherein N is a positive integer, 2*N lines of said flushing lines are divided into N groups, each group including two of said flushing lines, said first variable flow flushing step and said second variable flow flushing step being sequentially performed for each of the N groups of flushing lines;
or,
the multiple paths of flushing pipelines comprise (2 x N+1) paths, wherein N is a positive integer, (2 x N+1) paths of flushing pipelines are divided into N groups, each group comprises two paths of flushing pipelines, one path of flushing pipelines which are not included in the N groups and one path of flushing pipelines which are included in the N groups form (N+1) th group of flushing pipelines, and the first variable flow flushing step and the second variable flow flushing step are sequentially executed for each group of flushing pipelines in the (N+1) th group.
8. The method of flushing a liquid working medium system according to claim 1, wherein the flushing method is stopped to clean the filter body when the pump body is continuously operated for a preset period of time;
and/or the number of the groups of groups,
and when the cleanliness of the liquid working medium meets the preset condition, terminating executing the flushing method.
9. The flushing system of the liquid working medium system is characterized in that the flushing system is realized by a flushing device of the liquid working medium system, and the flushing device comprises a box body, a pump body, a filter body, a main conveying pipeline, a return pipeline, a multi-channel flushing pipeline and a flushing valve which is arranged corresponding to the flushing pipeline; wherein:
the box body is used for accommodating the liquid working medium;
one end of each flushing pipeline is respectively connected to a corresponding first communication position on the main conveying pipeline, and the other end of each flushing pipeline is respectively connected to a corresponding second communication position on the return pipeline;
the pump body is arranged on one side of the main conveying pipeline, close to the box body, and is used for pumping the liquid working medium into the flushing pipeline;
the filter body is arranged on the main conveying pipeline and is positioned between the box body and the pump body or between the pump body and a first communication position closest to the pump body;
the flushing valve is arranged on the corresponding flushing pipeline, and the opening of the flushing valve is adjustable and is used for controlling the flow of the liquid working medium flowing through the corresponding flushing pipeline;
the flushing system is used for:
in the flushing start-up phase, starting the pump body;
in the first variable flow rate flushing stage, the opening of a first flushing valve corresponding to a first flushing pipeline is maintained unchanged so as to flush the first flushing pipeline, and the opening of a second flushing valve corresponding to a second flushing pipeline is gradually adjusted so as to perform variable flow rate flushing on the second flushing pipeline;
in a second variable flow flushing stage, maintaining the opening of the second flushing valve unchanged to flush the second flushing pipeline, and gradually adjusting the opening of the first flushing valve to flush the first flushing pipeline in a variable flow manner;
wherein the first flushing line and the second flushing line are two of the plurality of flushing lines.
10. The flushing system of the liquid medium system of claim 9, wherein the liquid medium comprises a lubricating oil;
and/or the number of the groups of groups,
the filter body adopts a filter screen;
and/or the number of the groups of groups,
the number of the flushing pipelines is 4;
and/or the number of the groups of groups,
and a pressure measuring point is arranged on the main conveying pipeline.
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| CN202210835205.6A CN115193833B (en) | 2022-07-15 | 2022-07-15 | Flushing device and flushing method for liquid working medium system |
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| CN202210835205.6A CN115193833B (en) | 2022-07-15 | 2022-07-15 | Flushing device and flushing method for liquid working medium system |
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| CN115193833A (en) | 2022-10-18 |
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