CN117315896A - Station yard combustible gas leakage protection system and method - Google Patents
Station yard combustible gas leakage protection system and method Download PDFInfo
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- CN117315896A CN117315896A CN202210697790.8A CN202210697790A CN117315896A CN 117315896 A CN117315896 A CN 117315896A CN 202210697790 A CN202210697790 A CN 202210697790A CN 117315896 A CN117315896 A CN 117315896A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 21
- 238000012806 monitoring device Methods 0.000 claims description 11
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 79
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Business, Economics & Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
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- General Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a station yard combustible gas leakage protection system and method, which belong to the technical field of gas well exploitation, and comprise a plurality of wellhead safety hydraulic cutoff devices, an oil storage tank, a remote terminal unit, a plurality of control loops, a plurality of combustible gas detectors and a plurality of execution mechanisms, wherein the execution mechanisms are connected with the wellhead safety hydraulic cutoff devices and the oil storage tank through pipelines, the combustible gas detectors and the execution mechanisms are in communication connection with the remote terminal unit through the control loops, so that the cutoff of a gas source is realized, the structure is simple, the closing is rapid, meanwhile, through the communication connection between the remote terminal unit and the execution mechanisms, the gas well can be manually and remotely turned off by an operator if the interlocking failure occurs, the automatic interlocking remote closing of the hydraulic cutoff valve for monitoring the combustible gas leakage is realized, and the safety production of the station yard is protected.
Description
Technical Field
The invention relates to the technical field of gas well exploitation, in particular to a station combustible gas leakage protection system and method.
Background
The large-volume fracturing process brings high yield to the gas field, and meanwhile, a plurality of problems also appear, wherein the problem of sand production of the gas well is particularly remarkable, the sand production of the gas well leads to the leakage of combustible gas caused by flow and equipment puncture or puncture during testing and production, and the production time rate and safety are influenced.
The main protection measure in the conventional gas production well station at present is a well head safety hydraulic cut-off device, which mainly comprises a hydraulic cut-off valve, a hydraulic control system, a pipeline, a connecting piece and the like, wherein the hydraulic cut-off valve is formed by combining a hydraulic cylinder and a flat gate valve, when the gas transmission pressure of a pipeline exceeds the set pressure, the leakage pressure of the station pipeline due to rupture is lower than the set pressure or a fire alarm occurs, the hydraulic cut-off valve can be automatically closed by high-pressure hydraulic oil stored by an energy accumulator in the hydraulic control system to cut off a gas source, so that station equipment is protected, and major accidents are prevented from occurring or spreading.
When the sand is leaked out of the gas well, the pressure of the gas well drops very slowly, so that a large amount of combustible gas is leaked when the wellhead safety hydraulic cutting-off device triggers the cut-off pressure, and a large safety accident is easily caused.
Disclosure of Invention
The invention aims to overcome the defects that the process and equipment puncture or puncture damage is caused during testing and production of a gas well in the prior art, so that combustible gas is leaked, safety accidents are formed, and the production time rate and safety are influenced, and provides a station combustible gas leakage protection system and method.
In order to achieve the above object, the present invention provides the following technical solutions:
the station yard combustible gas leakage protection system comprises a plurality of wellhead safety hydraulic cut-off devices, an oil storage tank, a remote terminal unit, a plurality of control loops, a plurality of combustible gas detectors and a plurality of execution mechanisms, wherein the execution mechanisms are connected with the wellhead safety hydraulic cut-off devices and the oil storage tank through pipelines, and the combustible gas detectors and the execution mechanisms are in communication connection with the remote terminal unit through the control loops;
the combustible gas detector is used for detecting whether the combustible gas leaks or not and generating an alarm signal;
the remote terminal unit is used for receiving the alarm signal and outputting a control signal to the execution mechanism;
the actuating mechanism is used for controlling high-pressure hydraulic oil of the wellhead safety hydraulic cut-off device to return to the oil storage tank so as to automatically cut off the hydraulic cut-off valve.
By adopting the technical scheme, through the alarm interlocking between the combustible gas detector, the wellhead safety hydraulic cut-off device, the remote terminal unit and the actuating mechanism, the flow of hydraulic oil in the wellhead hydraulic cut-off device is remotely controlled, high-pressure hydraulic oil is forced to return to the oil storage tank, the hydraulic cut-off valve loses the support of the high-pressure hydraulic oil, the flat gate valve forming the hydraulic cut-off valve is automatically closed under the acting force of the spring in the flat gate valve, the cut-off of a gas source is realized, the structure is simple, the cut-off is rapid, meanwhile, the gas well can be manually and remotely cut-off by an operator if the interlocking fails, the automatic interlocking remote closing of the hydraulic cut-off valve for monitoring the combustible gas leakage is realized, and the safety production of a station is protected.
As a preferable scheme of the invention, the actuating mechanism comprises a control valve and a valve control mechanism for driving the control valve to open or close, one end of the control valve is connected with the wellhead safety hydraulic cut-off device pipeline, and the other end of the control valve is connected with the oil storage tank pipeline.
By adopting the technical scheme, the valve control mechanism is utilized to control the opening or closing of the control valve, so that the diversion of the high-pressure hydraulic oil is realized, the control is convenient, the control valve is respectively connected with the wellhead safety hydraulic cutting device and the oil storage tank through the hydraulic oil pipe, and when the control valve is opened, the high-pressure hydraulic oil in the control system also directly returns to the oil storage tank through the control valve, so that the structure is simple, and the realization is convenient.
As a preferable scheme of the invention, the control valve adopts a normally closed electromagnetic valve with signal feedback.
By adopting the technical scheme, the electromagnetic valve has high response speed (millisecond level), is suitable for emergency shutdown, is in a closed state when the normally closed electromagnetic valve is normally produced or is powered off, and normally passes natural gas, and triggers the normally closed electromagnetic valve to open when natural gas leaks, so that an oil way is closed through the realization of well closing, and the situation that the electromagnetic valve fails to cause the wellhead safety hydraulic cutoff device to be closed when a station is powered off is effectively prevented.
As a preferable mode of the invention, the combustible gas detector adopts a catalytic type combustible gas detector.
By adopting the technical scheme, when the combustible gas enters the catalytic type combustible gas detector, oxidation reaction (flameless combustion) is caused on the surface of the platinum wire, the temperature of the platinum wire is increased by the generated heat, the resistivity of the platinum wire is also changed, so that the combustible gas leakage alarm occurs, and 4-20mA analog quantity generated by an alarm signal can be conveniently connected into a remote terminal unit.
As a preferable scheme of the invention, the protection system further comprises a monitoring device which is a camera device, wherein the camera device is rotatably arranged in a station yard and is in communication connection with the remote terminal unit, and the monitoring device is used for monitoring the running condition of the executing mechanism and the condition of combustible gas in the station yard in real time.
By adopting the technical scheme, the emergency situation of the station yard is conveniently and timely known, whether the interlocking equipment acts normally or not is effectively identified, so that staff can process and prepare in time according to different sites, and accidents or the spread of the accidents is avoided.
As a preferred scheme of the invention, the protection system further comprises a plurality of alarm devices, wherein the alarm devices are sound-light alarm modules and/or voice broadcasting modules, and the alarm devices are in communication connection with the combustible gas detector, the valve control mechanism and the remote terminal unit.
By adopting the technical scheme, the remote terminal unit can timely acquire the concentration information of the on-site combustible gas and the action information of the valve control mechanism, and the problem that the normal production of station equipment is affected due to long-time cutoff of the cutoff valve caused by misoperation of the valve control mechanism is avoided.
As a preferable scheme of the invention, a plurality of wellhead safety hydraulic cut-off devices are respectively provided with numbers corresponding to the alarm devices.
By adopting the technical scheme, workers can accurately know the positions of the well station where the combustible gas leaks and the hydraulic cut-off valve where the combustible gas is cut off, corresponding treatment is timely carried out, the accident treatment time is shortened, and loss is avoided.
As a preferred embodiment of the present invention, the control signal is a wired or wireless signal.
In another aspect, a protection method of a station combustible gas leakage protection system according to any one of the above is provided, which is characterized by comprising the following steps:
s1: setting an alarm threshold value of the concentration of the combustible gas;
s2: the monitoring device monitors the running condition of the executing mechanism and the condition of combustible gas on site of a station in real time, the combustible gas detector generates an alarm signal and transmits the alarm signal to the remote terminal unit after detecting the combustible gas leakage, the remote terminal unit judges whether the alarm signal exceeds the alarm threshold value or not, if yes, a control signal is output to the executing mechanism and the step S3 is executed, otherwise, alarm processing is not carried out;
s3: the control valve is opened, high-pressure hydraulic oil in the wellhead safety hydraulic cutoff device returns to the oil storage tank, and the hydraulic cutoff valve is automatically closed to cut off the air source.
By adopting the technical scheme, according to the actual situation, only the flammable gas concentration alarm threshold value is set, the hydraulic cut-off valve is automatically closed under different working conditions, the function requirement of cutting off the gas source is realized, the on-off state of the field related equipment is monitored through the monitoring device, whether the equipment acts normally or not is effectively identified, if the equipment does not act normally, other emergency means are started to prevent the flammable gas from leaking, the field safety production is ensured, the hydraulic oil in the hydraulic control system is automatically controlled to flow according to the leakage condition of the field flammable gas, the high-pressure hydraulic oil in the hydraulic cut-off valve is forced to return to the oil storage tank, the hydraulic cut-off valve loses the support of the high-pressure hydraulic oil in the hydraulic control system, the flat gate valve forming the hydraulic cut-off valve is automatically closed under the action of the spring in the flat gate valve, the cut-off of the gas source is realized, the structure is simpler, and the cut-off is quicker.
In the preferred mode of the invention, in the step S2, the staff determines the position of the well station where the leakage of the combustible gas occurs and the hydraulic cut-off valve where the cut-off occurs according to the flashing light and/or the alarm sound sent by the alarm module.
Compared with the prior art, the invention has the beneficial effects that: through the alarm interlocking among the combustible gas detector, the wellhead safety hydraulic cut-off device, the remote terminal unit and the actuating mechanism, the flow of hydraulic oil in the wellhead hydraulic cut-off device is remotely controlled, high-pressure hydraulic oil is forced to return to the oil storage tank, the hydraulic cut-off valve loses the support of the high-pressure hydraulic oil, the flat gate valve forming the hydraulic cut-off valve is automatically closed under the action force of the spring in the flat gate valve, the cut-off of a gas source is realized, the structure is simple, the cut-off is rapid, meanwhile, the actuating structure is controlled through a wired or wireless signal through the remote terminal unit, if the interlocking failure occurs, the gas well can be manually and remotely cut off by an operator, the automatic interlocking remote closing of the hydraulic cut-off valve for monitoring the leakage of the combustible gas is realized, and the safety production of a station is protected; the monitoring device is convenient to acquire emergency situations of the station yard in time, effectively identifies whether the interlocking equipment acts normally or not, enables staff to perform timely treatment preparation according to different sites, and avoids accidents or spreading of the accidents; meanwhile, according to the actual situation, only the flammable gas concentration alarm threshold value is set, so that the hydraulic cut-off valve is automatically closed under different working conditions, and the function requirement of cutting off the gas source is met.
Drawings
FIG. 1 is a block diagram of a site combustible gas leakage protection system according to embodiment 1 of the invention;
FIG. 2 is a block diagram of an actuator of a yard combustible gas leakage protection system according to embodiment 1 of the present invention;
FIG. 3 is a schematic connection diagram of a monitoring device of a station yard combustible gas leakage protection system according to embodiment 1 of the present invention;
FIG. 4 is a schematic diagram illustrating connection of an alarm device of a station yard combustible gas leakage protection system according to embodiment 1 of the present invention;
fig. 5 is a flowchart of a station yard combustible gas leakage protection method according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be understood that the scope of the subject matter described above is limited to the following examples, and all techniques implemented based on the present disclosure are within the scope of the present invention.
Example 1
The station yard combustible gas leakage protection system comprises a plurality of wellhead safety hydraulic cutting devices, an oil storage tank, a remote terminal unit, a plurality of control loops, a plurality of combustible gas detectors and a plurality of execution mechanisms, wherein the execution mechanisms are connected with the wellhead safety hydraulic cutting devices and the oil storage tank through pipelines, and the combustible gas detectors and the execution mechanisms are connected with the remote terminal unit through the control loops in a communication manner;
the combustible gas detector is used for detecting whether the combustible gas leaks or not and generating an alarm signal;
the remote terminal unit is used for receiving the alarm signal and outputting a control signal to the execution mechanism;
the actuating mechanism is used for controlling high-pressure hydraulic oil of the wellhead safety hydraulic cut-off device to return to the oil storage tank so as to automatically cut off the hydraulic cut-off valve.
Specifically, the flow of hydraulic oil in the wellhead hydraulic cut-off device is controlled, high-pressure hydraulic oil is forced to return to an oil storage tank, the hydraulic cut-off valve loses the support of the high-pressure hydraulic oil, and a flat gate valve forming the hydraulic cut-off valve is automatically closed under the action force of an internal spring of the flat gate valve.
As shown in fig. 2, the actuating mechanism comprises a control valve and a valve control mechanism for driving the control valve to open or close, one end of the control valve is connected with the wellhead safety hydraulic cut-off device pipeline, and the other end of the control valve is connected with the oil storage tank pipeline.
The control valve adopts a normally closed electromagnetic valve with signal feedback.
The combustible gas detector adopts a catalytic type combustible gas detector.
Specifically, when the combustible gas enters the catalytic type combustible gas detector, oxidation reaction (flameless combustion) is caused on the surface of the platinum wire, the generated heat increases the temperature of the platinum wire, the resistivity of the platinum wire also changes, so that the combustible gas leakage alarm occurs, and 4-20mA analog quantity generated by an alarm signal can be conveniently connected into a remote terminal unit.
As shown in fig. 3, the protection system further includes a monitoring device, which is a camera device, and the camera device is rotatably disposed in the yard and is in communication connection with the remote terminal unit, and is configured to monitor the operation condition of the executing mechanism and the condition of the combustible gas in the yard in real time.
Specifically, the real-time status of the combustible gas in the station yard is observed in real time through the remote terminal unit, the running state of the executing mechanism is observed in real time, the on-off state of the field related equipment is monitored, whether the equipment normally acts or not is effectively identified, and if the equipment cannot normally act, other emergency means are started to prevent the combustible gas from leaking.
As shown in fig. 5, the protection system further includes a plurality of alarm devices, where the alarm devices are an acousto-optic alarm module and/or a voice broadcast module, and the alarm devices are communicatively connected with the flammable gas detector, the valve control mechanism and the remote terminal unit.
And a plurality of wellhead safety hydraulic cut-off devices are respectively provided with numbers corresponding to the alarm devices.
Specifically, the audible and visual alarm module is arranged to inform the staff through alarm sounds and flashing lights, so that the staff can timely acquire the action information of the valve control mechanism, the voice broadcasting module is arranged, the serial numbers of the corresponding cut-off valves are matched, and the staff can accurately acquire the positions of the well station where the combustible gas leaks and the cut-off valve where the combustible gas is intercepted.
The control signal is a wired or wireless signal.
Example 2
A method of protecting a yard combustible gas leakage protection system in accordance with embodiment 1, as shown in fig. 5, comprising the steps of:
s1: setting an alarm threshold value of the concentration of the combustible gas;
s2: the monitoring device monitors the running condition of the executing mechanism and the condition of combustible gas on site of a station in real time, the combustible gas detector generates an alarm signal and transmits the alarm signal to the remote terminal unit after detecting the combustible gas leakage, the remote terminal unit judges whether the alarm signal exceeds the alarm threshold value or not, if yes, a control signal is output to the executing mechanism and the step S3 is executed, otherwise, alarm processing is not carried out;
s3: the control valve is opened, high-pressure hydraulic oil in the wellhead safety hydraulic cutoff device returns to the oil storage tank, and the hydraulic cutoff valve is automatically closed to cut off the air source.
In the step S2, the staff determines the position of the well station where the combustible gas leaks and the hydraulic cut-off valve where the cut-off occurs according to the flashing light and/or the alarm sound sent by the alarm module.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The utility model provides a station yard combustible gas leakage protection system, includes a plurality of well head safety hydraulic pressure cut-off device, batch oil tank, its characterized in that, protection system still includes: the system comprises a remote terminal unit, a plurality of control loops, a plurality of combustible gas detectors and a plurality of execution mechanisms, wherein the execution mechanisms are connected with the wellhead safety hydraulic cut-off device and the oil storage tank pipeline, and the combustible gas detectors and the execution mechanisms are in communication connection with the remote terminal unit through the control loops;
the combustible gas detector is used for detecting whether the combustible gas leaks or not and generating an alarm signal;
the remote terminal unit is used for receiving the alarm signal and outputting a control signal to the executing mechanism;
the actuating mechanism is used for controlling high-pressure hydraulic oil of the wellhead safety hydraulic cut-off device to return to the oil storage tank so as to automatically cut off the hydraulic cut-off valve.
2. The yard combustible gas leakage protection system of claim 1 wherein said actuator comprises a control valve and a valve control mechanism for actuating said control valve to open or close, said control valve being connected at one end to said wellhead safety hydraulic shut-off device conduit and at the other end to said reservoir conduit.
3. The yard combustible gas leakage protection system of claim 2 wherein said control valve is a normally closed solenoid valve with signal feedback.
4. The yard combustible gas leakage protection system of claim 1 wherein the combustible gas detector is a catalytic combustible gas detector.
5. The yard combustible gas leakage protection system of claim 1, further comprising a monitoring device, wherein the monitoring device is a camera device, and the camera device is rotatably arranged in the yard and is in communication connection with the remote terminal unit, and is used for monitoring the operation condition of the executing mechanism and the condition of the yard combustible gas in real time.
6. A yard combustible gas leakage protection system according to claim 2 further comprising a plurality of alarm devices, said alarm devices being audible and visual alarm modules and/or voice broadcast modules, said alarm devices being in communication with said combustible gas detector, said valve control mechanism and said remote terminal unit.
7. The yard combustible gas leakage protection system of claim 6, wherein a plurality of said wellhead safety hydraulic cut-off devices are respectively provided with a number corresponding to said alarm device.
8. The yard combustible gas leakage protection system of claim 1 wherein said control signal is a wired or wireless signal.
9. A method of protecting a yard combustible gas leakage protection system in accordance with any one of claims 1 to 8 comprising the steps of:
s1: setting an alarm threshold value of the concentration of the combustible gas;
s2: the monitoring device monitors the running condition of the executing mechanism and the condition of combustible gas on site of a station in real time, the combustible gas detector generates an alarm signal and transmits the alarm signal to the remote terminal unit after detecting the combustible gas leakage, the remote terminal unit judges whether the alarm signal exceeds the alarm threshold value or not, if yes, a control signal is output to the executing mechanism and the step S3 is executed, otherwise, alarm processing is not carried out;
s3: the control valve is opened, high-pressure hydraulic oil in the wellhead safety hydraulic cutoff device returns to the oil storage tank, and the hydraulic cutoff valve is automatically closed to cut off the air source.
10. The method according to claim 1, wherein in the step S2, a worker determines the position of the well station where the combustible gas leaks and the wellhead safety liquid interception device where the interception occurs according to the flashing light and/or the alarm sound emitted from the alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210697790.8A CN117315896A (en) | 2022-06-20 | 2022-06-20 | Station yard combustible gas leakage protection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210697790.8A CN117315896A (en) | 2022-06-20 | 2022-06-20 | Station yard combustible gas leakage protection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117315896A true CN117315896A (en) | 2023-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210697790.8A Pending CN117315896A (en) | 2022-06-20 | 2022-06-20 | Station yard combustible gas leakage protection system and method |
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| Country | Link |
|---|---|
| CN (1) | CN117315896A (en) |
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2022
- 2022-06-20 CN CN202210697790.8A patent/CN117315896A/en active Pending
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