CN204114557U - The LNG filling machine control system improved - Google Patents
The LNG filling machine control system improved Download PDFInfo
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- CN204114557U CN204114557U CN201420390811.2U CN201420390811U CN204114557U CN 204114557 U CN204114557 U CN 204114557U CN 201420390811 U CN201420390811 U CN 201420390811U CN 204114557 U CN204114557 U CN 204114557U
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- valve
- filling machine
- pneumatic valve
- stop valve
- lng
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Abstract
The utility model provides a kind of LNG filling machine control system of improvement, comprise stop valve, one-way valve, mass flowmenter, the first pneumatic valve, the second pneumatic valve, liquid return hole stop valve and liquid feeding rifle, stop valve is connected by pipeline with one-way valve and mass flowmenter successively, mass flowmenter is connected respectively with the first pneumatic valve and the second pneumatic valve, first pneumatic valve is connected with liquid feeding rifle, second pneumatic valve is connected with liquid return hole stop valve, liquid return hole stop valve is connected with LNG storage tank, and stop valve is connected with LNG storage tank by immersed pump; The advantage that the utility model possesses has external interface signal to enrich, and application flexibility is strong, and every platform filling machine can work independently also can multiple stage parallel operation; Be provided with multiple aerating mode available, aerating, precooling can terminate automatically, also can manual termination; There is function of unloading and facilitate user's request; Built-in security interlocking protective system guarantees autostop under abnormal conditions; Friendly Human Machine Interface makes that filling machine function is more perfect, operation is more succinct.
Description
Technical field
The utility model relates to a kind of filling machine control system, particularly relates to a kind of control system of LNG filling machine of improvement.
Background technique
LNG automobile is in a kind of novel environment friendly automobile in recent years just starting to grow up after CNG automobile and LPG automobile, because its LNG carried has low, the required fuel tank of higher fuel density, pressure from heavy and light than CNG, comparatively CNG is much far away for distance travelled 300 to the 800km that once inflates of automobile, LNG can transport again simultaneously as oil product, there is the advantage of CNG and LPG simultaneously, and overcome their deficiency, therefore there is stronger practicability.Generally acknowledge at present, LNG automobile has economy, safety, environmental protection, the advantage such as applicable, convenient, motor-driven, is the developing direction of gas-fueled vehicles, is also the desirable route of urban size Natural Gas Motor Vehicle simultaneously.Thus as give LNG automobile realize filling nucleus equipment---LNG filling machine is in rapid growth momentum as up-and-coming youngster, along with the development of LNG automobile, the market prospects of LNG filling machine certainly will be also more and more wide, simultaneously also just more and more higher to the measuring accuracy of LNG filling machine, control performance, reliability requirements, market competition be growing more intense present, the survival of the fittest becomes a kind of inevitable.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of filling machine electric control system of new improvement, overcome traditional filling machine in some shortcoming functionally with not enough, make filling machine function more perfect, operate more succinct, external signaling interface is abundanter, the parallel connection application of greatly flexible multiple stage filling machine.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the filling machine electric control system providing a kind of new improvement, comprise stop valve, one-way valve, mass flowmenter, first pneumatic valve, second pneumatic valve, liquid return hole stop valve and liquid feeding rifle, stop valve is connected by pipeline with one-way valve and mass flowmenter successively, mass flowmenter is connected respectively with the first pneumatic valve and the second pneumatic valve, first pneumatic valve is connected with liquid feeding rifle, second pneumatic valve is connected with liquid return hole stop valve, liquid return hole stop valve is connected with LNG storage tank, stop valve is connected with LNG storage tank by immersed pump.Also comprise pressure transducer, pressure transducer connects the first pneumatic valve and liquid feeding rifle place pipeline.Also comprise gas returning port safety check and return-air rifle.Also comprise circulation port safety check, described circulation port safety check is connected with the second pneumatic valve.Filling machine has precooling, aerating, unloads, standby stopping four kinds of states, is provided with safe cross-linked protective system and filling machine reacts its working state by externally exporting two groups of on-off model in filling machine; And two digital quantity signals received from external system, and perform specific function according to the conditions dictate filling machine of these two signals.
Liquified natural gas LNG from LNG storage tank arrives two pneumatic cut-off valve entrances from filling machine liquid entering hole after pressurization after stop valve, one-way valve and mass flowmenter.When filling machine is at pre-cold state, first pneumatic valve cuts out, the second pneumatic valve is opened, LNG has got back to again LNG storage tank after mass flowmenter and the second pneumatic valve, completes the precooling to mass flowmenter through such cyclic process, must complete this precooling process before giving vehicle aerating at every turn; Pressing aerating key after precooling completes makes filling machine enter aerated form, under aerated form, second pneumatic valve cuts out, the first pneumatic valve is opened, and the vehicle steel cylinder that LNG injects automobile after mass flowmenter and the first pneumatic valve and liquid feeding rifle completes to the filling process of vehicle.
For the particular/special requirement of some special user, filling machine has function of unloading, and when being unloaded by filling machine, filling machine completes metering of unloading automatically.Giving before vehicle aerating, if vehicle steel cylinder pressure is higher, the gas returning port needing first to be inserted into by return-air rifle steel cylinder carries out return-air, and the gas in steel cylinder is recovered in LNG storage tank by return-air rifle 9, gas returning port safety check 6, liquid return hole stop valve 8.After treating return-air, then press aerating key to cylinder filling LNG.When liquid feeding rifle needs precooling treatment, can be linked into be provided with circulation port safety check pipeline on, complete the precooling work to it.
Filling machine has precooling, aerating, unloads, standby stopping four kinds of states.Be filled with any filling, quantitative filling and quota filling three kinds of modes optional, filling also completes automatically.Filling machine externally exports two groups of on-off model and reacts its working state, is provided with safe cross-linked protective system in filling machine, once it is abnormal to detect that filling machine occurs, automatically filling machine is switched to outage state.Filling machine externally exports several working staties of two groups of on-off model reaction filling machines, and two Digital Signals filling machines that filling machine receives again from outside simultaneously make it perform specific function.Filling machine realizes uploading and several machine networkings of aerating data by RS485 communication.Filling machine receives two digital quantity signals from external system, and performs specific function according to the conditions dictate filling machine of these two signals, provides convenience for multi-machine parallel connection uses.
The advantage that the utility model has and good effect are: external interface signal enriches, and application flexibility is strong, and every platform filling machine can work independently, and is also easy to realize multiple stage parallel operation; Be provided with multiple aerating mode for user unrestricted choice, aerating, precooling can terminate automatically, also can artificial manual termination; There is function of unloading and facilitate special user's demand; Built-in security interlocking protective system guarantees autostop under abnormal conditions; Friendly Human Machine Interface makes that filling machine function is more perfect, operation is more succinct, from meeting LNG gas station customer demand in all directions.
Accompanying drawing explanation
Fig. 1 is the utility model control system schematic diagram
In figure:
1-liquid entering hole stop valve 2-liquid entering hole safety check 3-mass flowmenter
4-first pneumatic valve 5-second pneumatic valve 6-gas returning port safety check
7-circulation port safety check 8-liquid return hole stop valve 9-return-air rifle
10-liquid feeding rifle 11-pressure transducer
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, the utility model comprises stop valve 1, one-way valve 2, mass flowmenter 3, first pneumatic valve 4, second pneumatic valve 5, liquid return hole stop valve 8 and liquid feeding rifle 10, stop valve 1 is connected by pipeline with one-way valve 2 and mass flowmenter 3 successively, mass flowmenter 3 is connected respectively with the first pneumatic valve 4 and the second pneumatic valve 5, first pneumatic valve 4 is connected with liquid feeding rifle 10, second pneumatic valve 5 is connected with liquid return hole stop valve 8, liquid return hole stop valve 8 is connected with LNG storage tank, and stop valve 1 is connected with LNG storage tank by immersed pump.Also comprise pressure transducer 11, pressure transducer 11 connects the first pneumatic valve 4 and liquid feeding rifle 10 place pipeline.Also comprise gas returning port safety check 6 and return-air rifle 9.Also comprise circulation port safety check 7, described circulation port safety check 7 is connected with the second pneumatic valve 5.Filling machine has precooling, aerating, unloads, standby stopping four kinds of states, is provided with safe cross-linked protective system and filling machine reacts its working state by externally exporting two groups of on-off model in filling machine; And two digital quantity signals received from external system, and perform specific function according to the conditions dictate filling machine of these two signals.
From LNG storage tank liquified natural gas LNG through pressurization after from filling machine liquid entering hole after stop valve 1, one-way valve 2 and mass flowmenter 3 to two pneumatic cut-off valve entrances.When filling machine is at pre-cold state, first pneumatic valve 4 cuts out, the second pneumatic valve 5 is opened, LNG has got back to again LNG storage tank after mass flowmenter 3 and the second pneumatic valve 5, complete the precooling to mass flowmenter 3 through such cyclic process, before giving vehicle aerating, this precooling process must be completed at every turn; Pressing aerating key after precooling completes makes filling machine enter aerated form, under aerated form, second pneumatic valve 5 cuts out, the first pneumatic valve 4 is opened, and the vehicle steel cylinder that LNG injects automobile after mass flowmenter 3 and the first pneumatic valve 4 and liquid feeding rifle 2 completes to the filling process of vehicle.
For the particular/special requirement of some special user, filling machine has function of unloading, and when being unloaded by filling machine, filling machine completes metering of unloading automatically.Giving before vehicle aerating, if vehicle steel cylinder pressure is higher, the gas returning port needing first to be inserted into by return-air rifle steel cylinder carries out return-air, and the gas in steel cylinder is recovered in LNG storage tank by return-air rifle 9, gas returning port safety check 6, liquid return hole stop valve 8.After treating return-air, then press aerating key to cylinder filling LNG.When liquid feeding rifle 10 need meet cryogenic treatment time, can be linked into be provided with circulation port safety check 7 pipeline on, complete the precooling work to it.
Filling machine has precooling, aerating, unloads, standby stopping four kinds of states.Be filled with any filling, quantitative filling and quota filling three kinds of modes optional, filling also completes automatically.Filling machine externally exports two groups of on-off model and reacts its working state, is provided with safe cross-linked protective system in filling machine, once it is abnormal to detect that filling machine occurs, automatically filling machine is switched to outage state.Filling machine externally exports several working staties of two groups of on-off model reaction filling machines, and two Digital Signals filling machines that filling machine receives again from outside simultaneously make it perform specific function.Filling machine realizes uploading and several machine networkings of aerating data by RS485 communication.Filling machine receives two digital quantity signals from external system, and performs specific function according to the conditions dictate filling machine of these two signals, provides convenience for multi-machine parallel connection uses.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present invention.All equalizations done according to the utility model scope change and improve, and all should still belong within this patent covering scope.
Claims (4)
1. the LNG filling machine control system improved, it is characterized in that: comprise stop valve (1), one-way valve (2), mass flowmenter (3), first pneumatic valve (4), second pneumatic valve (5), liquid return hole stop valve (8) and liquid feeding rifle (10), described stop valve (1) is connected by pipeline with one-way valve (2) and mass flowmenter (3) successively, described mass flowmenter (3) is connected respectively with the first pneumatic valve (4) and the second pneumatic valve (5), described first pneumatic valve (4) is connected with liquid feeding rifle (10), described second pneumatic valve (5) is connected with liquid return hole stop valve (8), liquid return hole stop valve (8) is connected with LNG storage tank, stop valve (1) is connected with LNG storage tank by immersed pump.
2. the LNG filling machine control system of improvement according to claim 1, it is characterized in that: also comprise pressure transducer (11), described pressure transducer (11) connects the first pneumatic valve (4) and liquid feeding rifle (10) place pipeline.
3. the LNG filling machine control system of improvement according to claim 1 and 2, is characterized in that: also comprise gas returning port safety check (6) and return-air rifle (9).
4. the LNG filling machine control system of improvement according to claim 1, is characterized in that: also comprise circulation port safety check (7), described circulation port safety check (7) is connected with the second pneumatic valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420390811.2U CN204114557U (en) | 2014-07-15 | 2014-07-15 | The LNG filling machine control system improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420390811.2U CN204114557U (en) | 2014-07-15 | 2014-07-15 | The LNG filling machine control system improved |
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| Publication Number | Publication Date |
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| CN204114557U true CN204114557U (en) | 2015-01-21 |
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| CN201420390811.2U Expired - Fee Related CN204114557U (en) | 2014-07-15 | 2014-07-15 | The LNG filling machine control system improved |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864261A (en) * | 2015-03-03 | 2015-08-26 | 东京计装（上海）仪表有限公司 | LNG filling measurement method with functions of self-pre-cooling and low temperature maintaining, and apparatus |
| CN106523902A (en) * | 2016-12-20 | 2017-03-22 | 山东新兴重工科技发展有限公司 | Low-temperature liquid filling vehicle for built-in pump |
| CN107606486A (en) * | 2017-11-09 | 2018-01-19 | 成都深冷凌泰机电科技有限公司 | A kind of LNG gas stations loading system and its method |
| CN110195818A (en) * | 2019-05-05 | 2019-09-03 | 泉州市新奥交通能源发展有限公司 | A kind of gas combustion automobile refueling system and method |
-
2014
- 2014-07-15 CN CN201420390811.2U patent/CN204114557U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864261A (en) * | 2015-03-03 | 2015-08-26 | 东京计装（上海）仪表有限公司 | LNG filling measurement method with functions of self-pre-cooling and low temperature maintaining, and apparatus |
| CN106523902A (en) * | 2016-12-20 | 2017-03-22 | 山东新兴重工科技发展有限公司 | Low-temperature liquid filling vehicle for built-in pump |
| CN107606486A (en) * | 2017-11-09 | 2018-01-19 | 成都深冷凌泰机电科技有限公司 | A kind of LNG gas stations loading system and its method |
| CN110195818A (en) * | 2019-05-05 | 2019-09-03 | 泉州市新奥交通能源发展有限公司 | A kind of gas combustion automobile refueling system and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20180715 |