CN201546958U - Running state alarm for screw refrigerating compressor - Google Patents
Running state alarm for screw refrigerating compressor Download PDFInfo
- Publication number
- CN201546958U CN201546958U CN2009202926235U CN200920292623U CN201546958U CN 201546958 U CN201546958 U CN 201546958U CN 2009202926235 U CN2009202926235 U CN 2009202926235U CN 200920292623 U CN200920292623 U CN 200920292623U CN 201546958 U CN201546958 U CN 201546958U
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- running state
- alarm
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- current
- control unit
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- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000011664 signaling Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000013024 troubleshooting Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a screw rod compressor running state alarm to can't in time discover among the solution prior art the unit adds the problem of the abnormal situation of uninstallation. The embodiment provides a screw rod refrigeration compressor running state alarm, includes: the current detection unit is used for detecting the operating current of the screw refrigerating compressor unit; and the control unit is connected with the current detection unit, obtains the running state of the screw refrigerating compressor unit according to the running current, compares the running state with a preset running state, and outputs prompt information if the running state is different from the preset running state. Adopt the utility model provides an alarm has overcome the problem that can't in time discover the unit and add the abnormal situation of uninstallation, and then makes the unit maintainer learn the unit operating mode in real time unusually, helps in time troubleshooting or adjusts unit operating mode with the energy saving.
Description
Technical field
The utility model relates to field of mechanical technique, in particular to a kind of Spiral Lobe Refrigeration Compressor running state alarm.
Background technique
In exhaust end base of oil injection threaded bolt refrigerating compressor, generally adopt the capacity regulating guiding valve to regulate unit capacity at present.Show that by physical fault rate survey guiding valve adjusting unit adds the unloading abnormal failure and accounts for more than 20% of Spiral Lobe Refrigeration Compressor actual motion rate of fault to Spiral Lobe Refrigeration Compressor.
In correlation technique; specially unit is not added the unloading abnormity processing; can only by unit add the unloading abnormal conditions under the operation a period of time after; occur corresponding as warnings such as high voltage protectives; the attendant carries out the unit faut detection; and then handle; if unit is when 75% operation; this moment working conditions change; need operate in 50%, if the unit unloading is unsuccessful, but this moment, high voltage protective did not appear in unit yet; then unit is under 75% the operating mode always and moves, and this running state can not meet the requirement of operating mode.
At finding in time in the correlation technique that unit adds the unusual condition of unloading, effective solution is not proposed as yet at present.
The model utility content
Main purpose of the present utility model is to provide a kind of Spiral Lobe Refrigeration Compressor running state alarm, can't find in time that to solve in the prior art unit adds the problem of the unusual condition of unloading.
To achieve these goals, the utility model embodiment provides following technological scheme:
A kind of Spiral Lobe Refrigeration Compressor running state alarm comprises:
Current detecting unit, the running current of detection Spiral Lobe Refrigeration Compressor group;
Control unit is connected with described current detecting unit, draws the running state of Spiral Lobe Refrigeration Compressor group according to described running current, with described running state and default running state relatively, if different, then exports information.
Preferably, described current detecting unit comprises:
AM access module is used for the running current of described Spiral Lobe Refrigeration Compressor group is inserted in the alarm;
Measure output module, be connected, be used to measure described running current and output to described control unit with described AM access module.
Preferably, described AM access module comprises current transformer.
Preferably, described measurement output module comprises:
The sampling submodule is sampled to described running current, is the signal that adapts to described control unit with the current conversion after the sampling;
The current signal output sub-module is connected with described sampling submodule, with the sampling submodule sampled result send to described control unit.
Preferably, described control unit comprises:
Logging modle is used to write down the corresponding relation of the running state and the performance number of Spiral Lobe Refrigeration Compressor group;
Modular converter is connected with described current detecting unit, is used for the current value that current detecting unit records is converted to performance number;
Analysis module is connected with described modular converter, is used for the running state that the performance number that draws according to modular converter and described corresponding relation draw the Spiral Lobe Refrigeration Compressor group;
Judge module is connected with described analysis module, and the running state that is used for Spiral Lobe Refrigeration Compressor group that the information of default running state and described analysis module are drawn is compared, and then exports information as if difference.
Preferably, described control unit is the control means with logical process function.
Preferably, described control unit is a programmable logic controller (PLC).
Preferably, described alarm further comprises:
The alarm output unit is connected with described control unit, is used for the alarm signal according to described information output sound and/or light form.
Preferably, described alarm output unit is buzzer and/or signaling lamp.
Because adopted current detecting unit to detect the unit running current, and obtain the information of unit actual motion state thus, so can grasp the running state of unit in real time, and whether the operation of judging unit of comparing with the operating states of the units of setting is in the operating mode of requirement.The alarm that adopts the utility model to provide, overcome and to have found in time that unit adds the problem of the unusual condition of unloading, and then make the unit maintenance personnel can learn the unit operation work condition abnormality in real time, help in time to fix a breakdown or adjust the unit operation operating mode with energy saving.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the basic structure schematic representation according to alarm among the utility model embodiment;
Fig. 2 is a kind of structural representation according to the current detecting unit of alarm among the utility model embodiment;
Fig. 3 is a kind of structural representation according to the control unit of alarm among the utility model embodiment; And
Fig. 4 is a kind of workflow diagram according to alarm among the utility model embodiment.
Embodiment
Describe mode of execution of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is the basic structure schematic representation according to alarm among the utility model embodiment.
As shown in Figure 1, the Spiral Lobe Refrigeration Compressor running state alarm among the utility model embodiment comprises current detecting unit 11 and control unit 12, and wherein, current detecting unit 11 is used to detect the running current that obtains the Spiral Lobe Refrigeration Compressor group; Control unit 12 is used for drawing according to the electric current that current detecting unit 11 obtains the running state of Spiral Lobe Refrigeration Compressor group, with the default running state comparison of this running state and reception, if different, then exports information.
Fig. 2 is a kind of structural representation according to the current detecting unit of alarm among the utility model embodiment.
As shown in Figure 2, a kind of optional structure of current detecting unit 11 comprises interconnective AM access module 111 and measures output module 112 that wherein AM access module 111, are used for the running current of Spiral Lobe Refrigeration Compressor group is inserted in the alarm; Measure output module 112, be used to measure described running current and output to control unit 12 then.The AM access module 111 here can adopt current transformer to realize.A kind of optional structure of the measurement output module 112 here comprises sampling submodule and current signal output sub-module, the submodule of wherein sampling is used for the running current of Spiral Lobe Refrigeration Compressor group is sampled, and current signal is converted to the signal that adapts to control unit 12; The current signal output sub-module is used for the sampled result after the sampling is sent to control unit 12.
Fig. 3 is a kind of structural representation according to the control unit 12 of alarm among the utility model embodiment.
As shown in Figure 3, a kind of optional structure of control unit 12 is to comprise successively logging modle 121, modular converter 122, analysis module 123 and the judge module 124 that connects, and wherein logging modle 121 is used to write down the corresponding relation of the running state and the performance number of Spiral Lobe Refrigeration Compressor group; Modular converter 122 is used for the current value that current detecting unit 11 obtains is converted to performance number; Analysis module 123 is used for the running state that the performance number that draws according to modular converter 122 and described corresponding relation draw the Spiral Lobe Refrigeration Compressor group; Judge module 124 is used to receive the information of default running state, and the running state of the Spiral Lobe Refrigeration Compressor group that its and analysis module 123 are drawn compares, and then exports information as if the two difference.
Preferably, control unit 12 can adopt the control means with logical process function to realize, for example programmable logic controller (PLC).
Alarm among Fig. 1 can also comprise an alarm output unit, is used for the information output sound that sends according to control unit 12 and/or the alarm signal of light form.The alarm output unit can adopt components and parts such as buzzer, signaling lamp when realizing.
Fig. 4 is a kind of workflow diagram according to alarm among the utility model embodiment.
The working method of the alarm in the present embodiment is described below in conjunction with Fig. 4.The real work mode of this alarm is not limited thereto, and can utilize the function of this alarm according to the concrete needs in the engineering reality.
Step S402: the electric current when alarm detects unit operation.Can be when beginning to add unloading operation, to enter this step in realization.
Step S404: alarm draws the power of the assembling unit according to the electric current that detection obtains, and draws the current running state of unit again according to power.
In this step, the corresponding relation of operating states of the units and power is as shown in table 1, and wherein, A0～A3 is that unit adds the posterior infromation that the unloading experimentation draws.
Table 1
| Operating states of the units | The power P of unit |
| 100％ | A1＜P≤A0 |
| 75％ | A2＜P≤A1 |
| 50％ | A3＜P≤A2 |
| 25％ | P≤A3 |
Step S406: adding that alarm reception unit sends unloads order.The information that has comprised default running state in this order for example is preset as operating states of the units the state of load 50%.
Step S408: alarm compares the current running state of unit and the default running state of reception, if the two is inconsistent, illustrates that the unloading that adds of unit occurs then changing step S410 over to unusually; If the two unanimity is then returned step S402, continue the electric current of unit is detected.
Step S410: output information.This information can be input in the sound and/or the alert device of light as output module, and for example buzzer, signaling lamp etc., these equipment can output sound and/or the alarm signal of light form, thereby the staff is discovered.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect: the running current that detects the Spiral Lobe Refrigeration Compressor group, and draw the unit real-time running state thus, this running state is compared with default operating states of the units, thereby judge then and can learn in time whether unit unloading has taken place to add unusually.Therefore use the alarm in the present embodiment, unloading can be reported to the police when unusual and fast notification unit maintenance personnel carry out maintenance process occurring adding, and has reached the time of having saved the maintenance man and having detected the unit fault, the effect that has improved reliability of system operation.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. a Spiral Lobe Refrigeration Compressor running state alarm is characterized in that, comprising:
Current detecting unit, the running current of detection Spiral Lobe Refrigeration Compressor group;
Control unit is connected with described current detecting unit, draws the running state of Spiral Lobe Refrigeration Compressor group according to described running current, with described running state and default running state relatively, if different, then exports information.
2. alarm according to claim 1 is characterized in that, described current detecting unit comprises:
AM access module is used for the running current of described Spiral Lobe Refrigeration Compressor group is inserted in the alarm;
Measure output module, be connected, be used to measure described running current and output to described control unit with described AM access module.
3. alarm according to claim 2 is characterized in that described AM access module comprises current transformer.
4. according to claim 2 or 3 described alarms, it is characterized in that described measurement output module comprises:
The sampling submodule is sampled to described running current, is the signal that adapts to described control unit with the current conversion after the sampling;
The current signal output sub-module is connected with described sampling submodule, with the sampling submodule sampled result send to described control unit.
5. alarm according to claim 1 and 2 is characterized in that, described control unit comprises:
Logging modle is used to write down the corresponding relation of the running state and the performance number of Spiral Lobe Refrigeration Compressor group;
Modular converter is connected with described current detecting unit, is used for the current value that current detecting unit records is converted to performance number;
Analysis module is connected with described modular converter, is used for the running state that the performance number that draws according to modular converter and described corresponding relation draw the Spiral Lobe Refrigeration Compressor group;
Judge module is connected with described analysis module, and the running state that is used for Spiral Lobe Refrigeration Compressor group that the information of default running state and described analysis module are drawn is compared, and then exports information as if difference.
6. alarm according to claim 5 is characterized in that, described control unit is the control means with logical process function.
7. alarm according to claim 6 is characterized in that, described control unit is a programmable logic controller (PLC).
8. alarm according to claim 1 and 2 is characterized in that, further comprises:
The alarm output unit is connected with described control unit, is used for the alarm signal according to described information output sound and/or light form.
9. alarm according to claim 8 is characterized in that, described alarm output unit is buzzer and/or signaling lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202926235U CN201546958U (en) | 2009-12-18 | 2009-12-18 | Running state alarm for screw refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202926235U CN201546958U (en) | 2009-12-18 | 2009-12-18 | Running state alarm for screw refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546958U true CN201546958U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202926235U Expired - Fee Related CN201546958U (en) | 2009-12-18 | 2009-12-18 | Running state alarm for screw refrigerating compressor |
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| Country | Link |
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| CN (1) | CN201546958U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179253A (en) * | 2015-09-10 | 2015-12-23 | 珠海格力电器股份有限公司 | Capacity adjusting method for screw compressor |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
-
2009
- 2009-12-18 CN CN2009202926235U patent/CN201546958U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179253A (en) * | 2015-09-10 | 2015-12-23 | 珠海格力电器股份有限公司 | Capacity adjusting method for screw compressor |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US11919363B2 (en) | 2017-08-25 | 2024-03-05 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20161218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |