CN204300679U - LNG mono-pump two-shipper filling station control system - Google Patents
LNG mono-pump two-shipper filling station control system Download PDFInfo
- Publication number
- CN204300679U CN204300679U CN201420631094.8U CN201420631094U CN204300679U CN 204300679 U CN204300679 U CN 204300679U CN 201420631094 U CN201420631094 U CN 201420631094U CN 204300679 U CN204300679 U CN 204300679U
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- lng
- pneumatic valve
- pump
- valve
- shipper
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- 238000003860 storage Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 abstract description 10
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000011017 operating method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011112 process operation Methods 0.000 abstract description 2
- 230000026676 system process Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 25
- 239000007791 liquid phase Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000012071 phase Substances 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A kind of LNG mono-pump two-shipper filling station control system, comprises the pneumatic valve being arranged on each line connection, switch, LNG filling device, upper-position unit and acoustic-optic alarm that the limit switch be arranged on pneumatic valve, the pressure transducer be arranged in LNG storage tank, the controller detecting the concurrent number of delivering letters, the frequency variator of control LNG immersed pump pressure, LNG annotate.The utility model utilizes PLC and ForceControl configuration software to combine, overcome the problem that the mono-pump two-shipper of LNG can not be annotated when unloading simultaneously, pneumatic valve is because machinery or valve is freezing etc. that valve that reason causes is failure to actuate causes system to occur accident, because the operator that complex process causes are difficult to grasp operating method.Therefore, the utility model improves manufacturing efficiency, and operator can be helped to understand rapidly system process operation, understands in time and processes the fault of valve, having extraordinary economic value and use value.
Description
Technical field
The utility model relates to LNG filling station filing provision, is specifically related to a kind of LNG mono-pump two-shipper filling station control system.
Background technique
The technological operation of LNG filling station comprises safe standby state, self pressurized vaporizer is annotated simultaneously, and immersed pump unloads liquid and annotates simultaneously, and immersed pump is only annotated, tank car gas phase and station inner storage tank gaseous pressure balance, tank car, manually from supercharging, stands inner storage tank manually from supercharging, and supercharging forced by tank car, inner storage tank of standing forces supercharging, the BOG of middle storage tank of unloading reclaims, and inner storage tank of stand falls liquid, the BOG recovery of storage tank in filling.LNG filling station control system utilizes controller by integrated various instrument valve equipment, achieves the object of LNG filling station monitoring.But, the problem that the mono-pump two-shipper of existing LNG mono-pump two-shipper filling station control system LNG can not be annotated when unloading simultaneously, pneumatic valve is because machinery or valve is freezing etc. that valve that reason causes is failure to actuate causes system to occur accident, because the operator that complex process causes are difficult to grasp operating method.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of LNG mono-pump two-shipper filling station control system, realizes can annotating while unloading, automatically can detect the fault that pneumatic valve switch puts in place, and simple to operate.
The technical solution of the utility model is: a kind of LNG mono-pump two-shipper filling station control system, comprises the pneumatic valve being arranged on each line connection, the limit switch be arranged on pneumatic valve, the pressure transducer be arranged in LNG storage tank, the controller detecting the concurrent number of delivering letters, the frequency variator of control LNG immersed pump outlet pressure, the switch of LNG filling, LNG filling device, upper-position unit and acoustic-optic alarm.
Described pneumatic valve comprises the feed flow pneumatic valve of the enterprising hydraulic pneumatic valve of LNG storage tank and lower feed liquor pneumatic valve, LNG filling device.
Described pneumatic valve front end is provided with pilot valve, and pilot valve is two-bit triplet pneumatic valve.
Described controller is PLC.
The utility model utilizes PLC and ForceControl configuration software to combine, overcome the problem that the mono-pump two-shipper of LNG can not be annotated when unloading simultaneously, pneumatic valve is because machinery or valve is freezing etc. that valve that reason causes is failure to actuate causes system to occur accident, because the operator that complex process causes are difficult to grasp operating method.Therefore, the utility model improves manufacturing efficiency, and operator can be helped to understand rapidly system process operation, understands in time and processes the fault of valve, having extraordinary economic value and use value.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is LNG of the present utility model mono-pump two-shipper filling station structural representation.
Embodiment
In order to be illustrated more clearly in the technological scheme of the utility model embodiment, introduce in detail below in conjunction with accompanying drawing.
A kind of LNG mono-pump two-shipper filling station control system, as shown in Figure 1, the pneumatic valve being arranged on each line connection, the limit switch be arranged on pneumatic valve, the pressure transducer be arranged in LNG storage tank, the controller detecting the concurrent number of delivering letters, the frequency variator of control LNG immersed pump pressure, upper-position unit and acoustic-optic alarm is comprised.Controller is PLC.
LNG mono-pump two-shipper filling station comprises LNG tank car 1, LNG storage tank 2, LNG immersed pump 3, a LNG filling device 4, the 2nd LNG filling device 5, vaporizer 6, heater 7 and flame trap 8.LNG tank car 1 is provided with liquid phase mouth, gas phase mouth and boost port.LNG tank car 1 is provided with liquid phase mouth, and liquid phase mouth is connected with the first liquid phase pipeline 13, and first liquid phase pipeline 13 the other end is connected with the liquid entering hole of LNG immersed pump 3.Motor in LNG immersed pump 3 can by LNG Liquid transfer to LNG storage tank 2, a LNG filling device 4 or the 2nd LNG filling device 5.LNG storage tank 2 is provided with liquid entering hole 202 and lower liquid entering hole 201.When unloading liquid, LNG liquid can be sent into the lower liquid entering hole 201 of LNG storage tank 2 by the motor in LNG immersed pump 3 by lower water influent pipeline 15, sent into the upper liquid entering hole 202 of LNG storage tank 2 by upper water influent pipeline 14.Lower water influent pipeline 15 is provided with lower feed liquor pneumatic valve 9, and upper water influent pipeline 14 is provided with enterprising hydraulic pneumatic valve 10.LNG liquid can be sent into a LNG filling device 4 by the first charging line 16 by the motor in LNG immersed pump 3, sends into the 2nd LNG filling device 5 by the second charging line 17.First charging line 16 is provided with feed flow pneumatic valve 11, second charging line 17 and is provided with feed flow pneumatic valve 12.LNG liquid in LNG storage tank 2 can enter the liquid entering hole of LNG immersed pump 3 through second liquid phase pipeline 18 from lower liquid entering hole 203.
The utility model can realize when unloading liquid to LNG storage tank 2, and when there being LNG filling automobile to need filling, this system stops unloading liquid to LNG storage tank 2, and is switched to LNG filling automobile liquid feeding; When not having LNG filling automobile to need filling, system switches back more again unloads liquid status to LNG storage tank 2.
Concrete electrically realization flow is: when LNG immersed pump 3 unloads liquid to LNG storage tank 2, PLC opens lower feed liquor pneumatic valve 9; Close the feed flow pneumatic valve 11 of a LNG filling device 4 and the feed flow pneumatic valve 12 of the 2nd LNG filling device 5, time delay 2s; The exit pressure levels that frequency variator arranges LNG immersed pump 3 is 1.2Mpa, and start LNG immersed pump 3, then LNG liquid flows to LNG storage tank 2 from LNG tank car 1 through the first liquid phase pipeline 13, LNG immersed pump 3, upper water influent pipeline 14 and lower water influent pipeline 15, starts to unload liquid; Control storage tank gaseous pressure unloading in liquid process, PLC is by gathering the signal of the pressure transmitter be arranged in LNG storage tank 2 gas phase, as pressure >0.6Mpa in LNG storage tank 2, PLC opens enterprising hydraulic pneumatic valve 10, spray step-down; As pressure < 0.4Mpa in LNG storage tank 2, PLC opens lower feed liquor pneumatic valve 9, and storage tank boosts.
When there being automobile to need filling, the filling switch of the one LNG filling device 4 or the 2nd LNG filling device 5 cuts out, PLC receives the filling switch shutdown signal of a LNG filling device 4 or the 2nd LNG filling device 5, opens the feed flow pneumatic valve of corresponding LNG filling device, time delay 2s; Close enterprising hydraulic pneumatic valve 10 and lower feed liquor pneumatic valve 9, PLC gives a LNG filling device 4 or the 2nd LNG filling device 5 feedback signal; The exit pressure levels that frequency variator arranges LNG immersed pump 3 is 2.0Mpa, then LNG liquid flows to a LNG filling device 4 or the 2nd LNG filling device 5 from LNG tank car 1 through the first liquid phase pipeline 13, LNG immersed pump 3, first charging line 16 or the second charging line 17.After filling completes, the filling switch opens of the one LNG filling device 4 or the 2nd LNG filling device 5, according to the force value that pressure transmitter will detect, open enterprising hydraulic pneumatic valve 10 and lower feed liquor pneumatic valve 9, close the feed flow pneumatic valve 11 of a LNG filling device 4 and the feed flow pneumatic valve 12 of the 2nd LNG filling device 5, time delay 2s; The exit pressure levels that frequency variator arranges LNG immersed pump 3 is 1.2Mpa, then LNG liquid flows to LNG storage tank 2 from LNG tank car 1 through the first liquid phase pipeline 13, LNG immersed pump 3, upper water influent pipeline 14 and lower water influent pipeline 15.So move in circles until unload liquid and complete.
The utility model can realize checking whether pneumatic valve normally opens closedown, prevent pneumatic valve because machinery or valve is freezing etc. that valve that reason causes is failure to actuate causes system to occur accident, when there is pneumatic valve valve and being failure to actuate, alert notice operator trouble shooting pneumatic valve.Concrete electrically realization flow is: pneumatic valve front end is provided with pilot valve, and pilot valve is two-bit triplet pneumatic valve.Pilot valve is controlled by PLC output point.Pilot valve coil obtains electric, and pneumatic valve is opened, pilot valve dead electricity, and pneumatic valve cuts out.When pneumatic valve is in closed condition, PLC is to pneumatic valve opening signal, and what in 4s, PLC did not receive limit switch reaches a signal, then the valve of pneumatic valve opens fault; When pneumatic valve is in open mode, PLC is to pneumatic valve shutdown signal, the reaching a signal and should disappear of limit switch of this pneumatic valve in 2s under normal circumstances, but what after having crossed 2s, PLC did not receive limit switch reaches a disappearance of signal, then the valve of pneumatic valve closes fault.After breaking down, signal is conveyed into upper-position unit by PLC, and upper-position unit reminds operator to break down by power control monitoring software, and makes acoustic-optic alarm send acoustooptic alarm, and operator understand and process failsafe valve.
Be provided with ForceControl configuration software in upper-position unit, ForceControl configuration software can show the flow chart circuit of LNG mono-pump two-shipper filling station.Circuit in flow chart does not have mobility under normal circumstances, can the mobility of configuration line in ForceControl configuration software.When the curve in corresponding flow chart after the corresponding flow process button in push picture will become mobility, program opens the valve on mobility curve automatically according to logic, makes master control technique picture more lively like this, be more convenient for operator's study and operation.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. LNG mono-pump two-shipper filling station control system, is characterized in that: comprise the pneumatic valve being arranged on each line connection, the limit switch be arranged on pneumatic valve, the pressure transducer be arranged in LNG storage tank, the controller detecting the concurrent number of delivering letters, the frequency variator of control LNG immersed pump outlet pressure, the switch of LNG filling, LNG filling device, upper-position unit and acoustic-optic alarm.
2. LNG according to claim 1 mono-pump two-shipper filling station control system, is characterized in that, described pneumatic valve comprises the feed flow pneumatic valve of the enterprising hydraulic pneumatic valve of LNG storage tank and lower feed liquor pneumatic valve, LNG filling device.
3. LNG according to claim 1 mono-pump two-shipper filling station control system, is characterized in that, described pneumatic valve front end is provided with pilot valve, and pilot valve is two-bit triplet pneumatic valve.
4. LNG according to claim 1 mono-pump two-shipper filling station control system, is characterized in that, described controller is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631094.8U CN204300679U (en) | 2014-10-29 | 2014-10-29 | LNG mono-pump two-shipper filling station control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631094.8U CN204300679U (en) | 2014-10-29 | 2014-10-29 | LNG mono-pump two-shipper filling station control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300679U true CN204300679U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420631094.8U Expired - Lifetime CN204300679U (en) | 2014-10-29 | 2014-10-29 | LNG mono-pump two-shipper filling station control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204300679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108147356A (en) * | 2017-12-18 | 2018-06-12 | 安徽省锐凌计量器制造有限公司 | Portable liquid filling machine's trouble self-checking device |
| CN110425418A (en) * | 2019-07-31 | 2019-11-08 | 郑州朗润智能装备股份有限公司 | Box LNG aerating skid-mounted device process system and its working method |
-
2014
- 2014-10-29 CN CN201420631094.8U patent/CN204300679U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108147356A (en) * | 2017-12-18 | 2018-06-12 | 安徽省锐凌计量器制造有限公司 | Portable liquid filling machine's trouble self-checking device |
| CN110425418A (en) * | 2019-07-31 | 2019-11-08 | 郑州朗润智能装备股份有限公司 | Box LNG aerating skid-mounted device process system and its working method |
| CN110425418B (en) * | 2019-07-31 | 2021-06-04 | 郑州朗润智能装备股份有限公司 | Box type LNG (liquefied Natural gas) filling skid-mounted device process system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450000, No. 12, building 1, No. 1, block 11, block 1, Gaoxin Road, hi tech, Henan, Zhengzhou Patentee after: ZHENGZHOU LANGRUN INTELLIGENT EQUIPMENT CO.,LTD. Address before: 450000, No. 12, building 1, No. 1, block 11, block 1, Gaoxin Road, hi tech, Henan, Zhengzhou Patentee before: Zhengzhou Langrun Petroleum Equipment Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20150429 |