CN201322183Y - Safe truncation control system for compressed gas filling station - Google Patents
Safe truncation control system for compressed gas filling station Download PDFInfo
- Publication number
- CN201322183Y CN201322183Y CNU2008203038960U CN200820303896U CN201322183Y CN 201322183 Y CN201322183 Y CN 201322183Y CN U2008203038960 U CNU2008203038960 U CN U2008203038960U CN 200820303896 U CN200820303896 U CN 200820303896U CN 201322183 Y CN201322183 Y CN 201322183Y
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- gas
- control system
- station
- compressor
- gas station
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Abstract
The utility model discloses a safe truncation control system for compressed gas filling station, which is used in gas stations. The system is characterized in that the system can enhance the safety of the gas filling station in an emergency accident. In the safe truncation control system for compressed gas filling station, a high-pressure emergency truncation valve is arranged in the pipeline between a gas storage well and a gas dispenser, an inspection device and a decompression control console are arranged inside the gas filling station, and the decompression control console is separately and electrically connected with the inspection device, a compressor, the high-pressure emergency truncation valve. In case of an emergency in the gas station in any time, the inspection device detects the occurrence of an emergency and sends a signal to the decompression control console which then sends out a control signal to close the high-pressure emergency truncation valve and stop the compressor, thereby truncating the whole pipeline of the gas filling station. Therefore, the potential risks in the gas filling station caused by an emergency can be prevented, the safety can be significantly enhanced, and the system can be particularly applicable to the compressed gas filling station.
Description
Technical field
The utility model relates to a kind of automatic control system, especially relates to a kind of compressed natural gas gas station safety of using and block control system in gas station.
Background technique
At present, therefore adopt reliably, safety measure is very necessary efficiently in CNG gas-charging station for automobile belongs to inflammable, explosive, poisonous dangerous work place.In gas station, mainly include the compressor, dewatering unit, sequential disc, gas storage well and the gas selling machine that connect by pipeline, and manual control valve is set in system pipeline when system's generation emergency episode, is used for system pipeline is blocked.But, when adopting manual control valve to control, there is following shortcoming: when station system generation emergency episode (natural gas leaking, booster low pressure, superpressure or filling machine displacement accident), manual control mode can not be realized the gas supply pipe road is cut off rapidly, ventilating fan, the compressor, the rock gas block valve that enters the station, the urgent block valve of high pressure that are provided with in the gas station can not carry out chain automatic control, are therefore taking place to cause security incident easily behind the emergency episode.
The model utility content
Technical problem to be solved in the utility model provides a kind of compressed natural gas gas station safety that can improve the gas station Security when the burst emergency episode and blocks control system.
The technological scheme that its technical problem that solves the utility model adopts is: compressed natural gas gas station safety is blocked control system, comprise the gas station that compressor, dewatering unit, sequential disc, gas storage well and gas selling machine are linked in sequence and constitute, pipeline between gas storage well and the gas selling machine is provided with the urgent block valve of high pressure, be provided with detection device in the gas station, in gas station, be provided with the decompression main control system that is electrically connected with detection device, compressor, the urgent block valve of high pressure respectively.
Further be that described detection device is the combustion gas probe that is separately positioned on compressor and gas selling machine place.
Further be that the circuit between combustion gas probe and the decompression main control system is provided with alarm.
Further be that described detection device also comprises the pressure transmitter that connects gas station inner connection tube road.
Further be that described detection device also comprises the flow detection switch that connects gas selling machine.
Further be, the pipeline that enters the station that connects compressor is provided with the rock gas block valve that enters the station, and the rock gas block valve that enters the station is electrically connected the decompression main control system.
Further be in gas station, to be provided with the ventilating fan that is electrically connected with the decompression main control system.
Further be in gas station, to be provided with the dehydration electric heating temperature controlling instrument that is electrically connected with the decompression main control system.
Further be, compressor and the pipeline that enters the station between the rock gas block valve of entering the station be provided be used to purify, the control apparatus of pressure regulation and metering.
Further be that the decompression main control system is electrically connected with the compressor control cabinet.
Further be that described decompression main control system, pressure transmitter and detecting switch all are arranged in the same rack.
The beneficial effects of the utility model are: by the urgent block valve of high pressure that is provided with; detection device and decompression main control system; when emergency episode at any time takes place in gas station; detection device detects the generation of emergency episode; this signal is delivered to the decompression main control system; the decompression main control system sends control signal; the urgent block valve of high pressure is closed; make compressor shutdown simultaneously; thereby the pipeline of whole gas station is blocked; cause the potential safety hazard of gas station when preventing emergency episode; improve the Security of gas station work greatly, be particluarly suitable for promoting the use of in the compressed natural gas station system.
Description of drawings
Fig. 1 is a system architecture sketch of the present utility model;
Fig. 2 is that electric signal communication of the present utility model connects the control sketch;
Fig. 3 is a system control signal transmission sketch.
Be labeled as among the figure: compressor 1, sequential disc 2, gas storage well 3, gas selling machine 4, the urgent block valve 5 of high pressure, decompression main control system 6, the rock gas block valve 7 that enters the station, combustion gas probe 8, alarm 9, flow detection switch 10, pressure transmitter 11, ventilating fan 12, control apparatus 13, compressor control cabinet 14, rack 15, dehydration electric heating temperature controlling instrument 16, dewatering unit 17, dotted line represents that pipeline connects among display screen 18 figure, and the electrical control signal transmission path is represented in two-dot chain line.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Fig. 1～shown in Figure 3, compressed natural gas of the present utility model gas station safety is blocked control system, comprise the gas station that compressor 1, dewatering unit 17, sequential disc 2, gas storage well 3 and gas selling machine 4 are linked in sequence and constitute, pipeline between gas storage well 3 and the gas selling machine 4 is provided with the urgent block valve 5 of high pressure, be provided with detection device in the gas station, in gas station, be provided with the decompression main control system 6 that is electrically connected with detection device, compressor 1, the urgent block valve 5 of high pressure respectively.When emergency episode at any time takes place in gas station, detection device detects the generation of emergency episode, this signal is delivered to decompression main control system 6, decompression main control system 6 sends control signal, the urgent block valve 5 of high pressure is closed, compressor 1 is shut down, thereby the pipeline of whole gas station is blocked, cause the potential safety hazard of gas station when preventing emergency episode, the urgent block valve 5 of high pressure can adopt electromagnetism-gas-driving valve or electromagnetic hydraulic valve etc. to realize control; Decompression main control system 6 can the PLC programmable controller be that core parts cooperate corresponding electric elements to form.
As the preferred version of technique scheme, described detection device is to be separately positioned on compressor 1 to pop one's head in 8 with the combustion gas at gas selling machine 4 places.Then the gas leakage in the gas station reaches after certain value; the signal that combustion gas probe 8 can transfinite for 6 one detected gas leakages of decompression main control system; make decompression main control system 6 send control signal; the urgent block valve 5 of high pressure is closed; compressor 1 is shut down, thereby the pipeline of whole gas station is blocked.And the circuit between combustion gas probe 8 and the decompression main control system 6 is provided with alarm 9.When combustion gas probe 8 detected gas leakage and transfinites, alarm 9 sent alarm signal, and simultaneously, whole pipeline blocks, and the maintenance man is keeped in repair pipeline.
And when the pressure of system was undesired, for making the whole system proper functioning, described detection device also comprised the pressure transmitter 11 that connects gas station inner connection tube road.The gaseous-pressure of pipeline surpasses the upper limit of setting (being system overpressure) in gas station; or gaseous-pressure is when being lower than the minimum pressure of setting; pressure transmitter 11 detects this type of signal; this signal is delivered to decompression main control system 6; make decompression main control system 6 send control signal, the urgent block valve 5 of high pressure is closed, compressor 1 is shut down; thereby the pipeline of whole gas station is blocked, then superpressure or low voltage failure are safeguarded.
When gas selling machine 4 is subjected to displacement accident, quit work in order to make whole system, described detection device also comprises the flow detection switch 10 that connects gas selling machine 4.Then when gas selling machine 4 is subjected to displacement accident; flow detection switch 10 detects the gas flow signal; this signal is delivered to decompression main control system 6; make decompression main control system 6 send control signal; the urgent block valve 5 of high pressure is closed; compressor 1 is shut down, thereby the pipeline of whole gas station is blocked, then the displacement accident of gas selling machine 4 is safeguarded.
In the above embodiment, after gas station blocked, the combustion gas of urban pipe network still can continue to carry in gas station, in order to block this source of the gas, the pipeline that enters the station that connects compressor 1 is provided with the rock gas block valve 7 that enters the station, and the rock gas block valve 7 that enters the station is electrically connected decompression main control system 6.Then when gas station takes place as the emergency episode in the mode of execution of front; close at the urgent block valve 5 of high pressure; when compressor 1 is shut down; decompression main control system 6 also can send control signal closes the rock gas block valve 7 that enters the station; thereby the combustion gas that prevents urban pipe network is passed into gas station; block source of the gas, improve Security.The rock gas block valve 7 that enters the station can adopt electromagnetism-gas-driving valve or electromagnetic hydraulic valve etc. to realize control.
For strengthening the Security in the gas station better, in gas station, be provided with the ventilating fan 12 that is electrically connected with decompression main control system 6.Then when emergency episode took place, decompression main control system 6 sent control signal, and ventilating fan 12 is opened, and the combustion gas of leaking during with the generation emergency episode is drained, and prevents security incident.Simultaneously, in gas station, be provided with the dehydration electric heating temperature controlling instrument 16 that is electrically connected with decompression main control system 6.Then when system's proper functioning, but dehydration electric heating temperature controlling instrument 16 proper functioning, and in the process that 17 pairs of rock gases of dewatering unit dewater, need to adopt Electric heating appliance to heat a part of rock gas, the rock gas of this heating is dried the dehydration molecular sieve in the dewatering unit 17; Abnormal conditions occur and work as system, the urgent block valve 5 of high pressure, the rock gas block valve 7 that enters the station are closed, and compressor 1 is shut down, and the rock gas of heating also stops to flow, if Electric heating appliance is still carrying out, the rock gas after the heating does not flow again, will produce second accident.So when emergency episode takes place, make dehydration electric heating temperature controlling instrument 16 block the heating power supply of Electric heating appliance by pressure-controlled main frame 6, stop the work of Electric heating appliance, then rock gas can not continue to heat up, and has just avoided the generation of second accident yet.
Can control the combustion gas that urban pipe network enters gas station in order to make, compressor 1 and the pipeline that enters the station between the rock gas block valve 7 of entering the station be provided be used to purify, the control apparatus 13 of pressure regulation and metering.This control apparatus 13 can purify the gas that comes of urban pipe network, and pressure stability when making it enter gas station, prevents the impact to compressor, the metering before also can entering the station to the amount of combustion gas simultaneously.The structure of this control apparatus 13 is a prior art, here just repeats no more.
Compressor 1 is shut down, and decompression main control system 6 is electrically connected with compressor control cabinet 14.Then decompression main control system 6 shuts down compressor 1 by compressor control cabinet 14 when the burst emergency episode, and compressor 1 all can proper functioning under any normal state.
In order to make the staff to understand the working condition of whole gas station intuitively, decompression main control system 6 is electrically connected with display screen 18.Then be delivered to decompression main control system 6 by combustion gas probe 8, flow detection switch 10, pressure transmitter 11 detected signals in the gas station, and this signal is shown by display screen 18, make things convenient for the staff that the situation of whole system is understood, can further reduce the occurrence probability of accident; And can control means be set on display screen 18 runnability of system is controlled and adjusted.
In sum, when system low-voltage that compressed natural gas of the present utility model gas station safety blocks that control system can be leaked gas in system, pipeline superpressure, pipeline booster cause and gas selling machine 4 are subjected to displacement accident, the pipeline of whole gas station is cut off; Simultaneously, can also in system pipeline, be equipped with the manual control valve in the background technique, under the situation of automatic control fails, adopt hand control valve goalkeeper system pipeline to block.In addition, the urgent block valve 5 of high pressure, flow detection switch 10, pressure transmitter 11 and manual control valve all can be arranged in the rack 15, can maintain easily maintenance.
Claims (10)
1. compressed natural gas gas station safety is blocked control system, comprise the gas station that compressor (1), dewatering unit (17), sequential disc (2), gas storage well (3) and gas selling machine (4) are linked in sequence and constitute, it is characterized in that: the pipeline between gas storage well (3) and the gas selling machine (4) is provided with the urgent block valve of high pressure (5), be provided with detection device in the gas station, in gas station, be provided with the decompression main control system (6) that is electrically connected with detection device, compressor (1), the urgent block valve of high pressure (5) respectively.
2. compressed natural gas as claimed in claim 1 gas station safety is blocked control system, it is characterized in that: described detection device is for being separately positioned on the combustion gas probe (8) that compressor (1) and gas selling machine (4) are located.
3. compressed natural gas as claimed in claim 2 gas station safety is blocked control system, it is characterized in that: the circuit between combustion gas probe (8) and the decompression main control system (6) is provided with alarm (9).
4. compressed natural gas as claimed in claim 2 gas station safety is blocked control system, it is characterized in that: described detection device also comprises the pressure transmitter (11) that connects gas station inner connection tube road.
5. compressed natural gas as claimed in claim 4 gas station safety is blocked control system, it is characterized in that: described detection device also comprises the flow detection switch (10) that connects gas selling machine (4).
6. block control system according to any described compressed natural gas of claim gas station safety in the claim 1～5, it is characterized in that: the pipeline that enters the station that connects compressor (1) is provided with the rock gas block valve (7) that enters the station, and the rock gas block valve (7) that enters the station is electrically connected decompression main control system (6).
7. compressed natural gas as claimed in claim 6 gas station safety is blocked control system, it is characterized in that: be provided with the ventilating fan (12) that is electrically connected with decompression main control system (6) in gas station.
8. compressed natural gas as claimed in claim 6 gas station safety is blocked control system, it is characterized in that: be provided with the dehydration electric heating temperature controlling instrument (16) that is electrically connected with decompression main control system (6) in gas station.
9. compressed natural gas as claimed in claim 6 gas station safety is blocked control system, it is characterized in that: compressor (1) and the pipeline that enters the station between the rock gas block valve (7) of entering the station be provided be used to purify, the control apparatus (13) of pressure regulation and metering.
10. compressed natural gas as claimed in claim 6 gas station safety is blocked control system, and it is characterized in that: decompression main control system (6) is electrically connected with compressor control cabinet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203038960U CN201322183Y (en) | 2008-12-30 | 2008-12-30 | Safe truncation control system for compressed gas filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203038960U CN201322183Y (en) | 2008-12-30 | 2008-12-30 | Safe truncation control system for compressed gas filling station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322183Y true CN201322183Y (en) | 2009-10-07 |
Family
ID=41159565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203038960U Expired - Lifetime CN201322183Y (en) | 2008-12-30 | 2008-12-30 | Safe truncation control system for compressed gas filling station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322183Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526491A (en) * | 2014-09-29 | 2016-04-27 | 安瑞科(廊坊)能源装备集成有限公司 | Oil return system and method for hydraulic type nature gas vehicle gas-filling substation |
| CN107166165A (en) * | 2017-07-07 | 2017-09-15 | 山东特联信息科技有限公司 | Filling machine control device and system |
-
2008
- 2008-12-30 CN CNU2008203038960U patent/CN201322183Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526491A (en) * | 2014-09-29 | 2016-04-27 | 安瑞科(廊坊)能源装备集成有限公司 | Oil return system and method for hydraulic type nature gas vehicle gas-filling substation |
| CN105526491B (en) * | 2014-09-29 | 2023-03-31 | 安瑞科(廊坊)能源装备集成有限公司 | Hydraulic natural gas filling for automobile substation oil return system and oil return method |
| CN107166165A (en) * | 2017-07-07 | 2017-09-15 | 山东特联信息科技有限公司 | Filling machine control device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |
|
| CX01 | Expiry of patent term |