CN109595471B - Detection device and detection method for natural gas pipeline - Google Patents
Detection device and detection method for natural gas pipeline Download PDFInfo
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- CN109595471B CN109595471B CN201811224997.3A CN201811224997A CN109595471B CN 109595471 B CN109595471 B CN 109595471B CN 201811224997 A CN201811224997 A CN 201811224997A CN 109595471 B CN109595471 B CN 109595471B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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Abstract
The invention discloses a detection device of a natural gas pipeline, which comprises a first gas transmission main pipe, a second gas transmission main pipe and a connection device, one end of the connection device is fixedly connected with the first main gas transmission pipe, the other end of the connection device is fixedly connected with the second main gas transmission pipe, the first main gas transmission pipe is fixedly connected with the second main gas transmission pipe through a connecting device, gas transmission branch pipes are arranged on the first main gas transmission pipe and the second main gas transmission pipe, the gas transmission branch pipes are fixedly connected with the first gas transmission main pipe and the second gas transmission main pipe through the connecting device, the connection device comprises a shell, a detection box is arranged on the shell, a control device is arranged in the detection box, the control device is wrapped by the detection box and fixedly connected with the detection box, and air pressure sensors are arranged in the first main air transmission pipe, the second main air transmission pipe and the air transmission branch pipe; the detection device for the natural gas pipeline can effectively detect leakage of the natural gas pipeline.
Description
Technical Field
The invention relates to a detection device and a detection method for a natural gas pipeline.
Background
The natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced by an oil field) from a mining place or a processing plant to a city gas distribution center or an industrial enterprise user, and is also called a gas transmission pipeline.
With the popularization of natural gas, the industrial production almost uses the natural gas as energy source or heating, or smelting, or baking and the like. The natural gas is mostly transported in a pipeline mode, and the transportation amount of the natural gas is controlled through a gas valve. Natural gas leakage is easy to occur at the place where the natural gas pipelines are connected, so that the key for ensuring industrial safety production is to make the natural gas pipeline leakage detection work.
However, the existing natural gas pipeline detection device has a general effect, and those skilled in the art hope to provide a detection device capable of effectively detecting leakage of a natural gas pipeline.
Disclosure of Invention
The invention aims to provide a detection device and a detection method thereof, which can effectively detect natural gas pipeline leakage.
In order to solve the problems, the invention adopts the following technical scheme:
a detection device for a natural gas pipeline comprises a first gas transmission main pipe, a second gas transmission main pipe and a connection device, wherein the connection device is provided with more than one, one end of the connection device is fixedly connected with the first gas transmission main pipe, the other end of the connection device is fixedly connected with the second gas transmission main pipe, the first gas transmission main pipe is fixedly connected with the second gas transmission main pipe through the connection device, gas transmission branch pipes are arranged on the first gas transmission main pipe and the second gas transmission main pipe respectively, the gas transmission branch pipes are fixedly connected with the first gas transmission main pipe and the second gas transmission main pipe through the connection device, the connection device comprises a shell, a detection box is arranged on the shell, a control device is arranged in the detection box, the detection box wraps the control device, the control device is fixedly connected with the detection box, and air pressure sensors are arranged in the first gas transmission main pipe, the second gas transmission main pipe and the gas transmission branch pipes respectively, the air pressure sensors are distributed in an annular array, the air pressure sensors are fixedly connected with the first air transmission main pipe, the second air transmission main pipe and the air transmission branch pipes on the air pressure sensors, and the air pressure sensors are electrically connected with the control device.
Preferably, shell inner wall both sides all are provided with the metal rubber seal who is used for preventing gas leakage, metal rubber seal all with shell fixed connection, be provided with the perforation on the metal rubber seal, the perforation is provided with more than one, the perforation is the equidistant setting that distributes. The metal rubber sealing ring not only has the elasticity of rubber, but also has the excellent characteristics of metal, and simultaneously, can bear pressure, and has the dual functions of bearing pressure and sealing in a certain range.
Preferably, be provided with the backup pad below the detection box, the backup pad is the symmetric distribution setting, the backup pad all with detection box bolted connection, be provided with the slot that matches mutually with the backup pad on the shell, the backup pad is inserted in the slot, the detection box passes through backup pad and slot and can dismantle with the shell and be connected. The backup pad inserts in the slot, can dismantle detection box and shell, makes things convenient for the maintenance inspection.
Preferably, the connection devices are respectively provided with electromagnetic valves, the electromagnetic valves are respectively fixedly connected with the connection devices, and the electromagnetic valves are respectively electrically connected with the control devices. The electromagnetic valve can close the leaked pipeline, and effectively prevents the gas from being continuously conveyed and leaked.
Preferably, the detection box is provided with first warning light and second warning light in both sides, first warning light and second warning light all rather than detection box fixed connection on separately, first warning light and second warning light all rather than the controlling means electric connection on separately. Through being provided with first warning light and second warning light, can effectually come out the pipeline mark that will take place to leak, make things convenient for the staff to repair.
Preferably, the first gas transmission main pipe, the second gas transmission main pipe and the gas transmission branch pipe are internally provided with reducing detection devices, each reducing detection device comprises a pressure sensor, a base, a spring and a connecting rod, and the pressure sensors are electrically connected with respective control devices. The pressure sensor can effectively feed back the pressure condition of the changed inner diameter of the pipeline to the control device.
Preferably, the base and the spring are symmetrically distributed, the pressure sensor is embedded into the base and fixedly connected with the spring, and the connecting rod is fixedly connected with the spring. Through pressure sensor and spring coupling, when the spring compression, thereby the pressure change detects the reducing condition of pipeline inside.
Preferably, the outer surfaces of the first main gas transmission pipe, the second main gas transmission pipe and the gas transmission branch pipe are provided with anticorrosive coatings. Through being provided with anticorrosive coating, can effectually prevent that first gas transmission is responsible for, second gas transmission is responsible for and gas transmission branch pipe takes place the corrosion, prolongs its life.
The invention provides a detection method of a detection device of a natural gas pipeline, which comprises the following steps:
1) the main gas transmission pipe and the branch gas transmission pipe are respectively connected through a connecting device;
2) then, detecting the air pressure condition in the pipeline by adopting an air pressure sensor, feeding the air pressure condition back to respective control devices by the air pressure sensors in the two connection devices connected with the leaked main gas pipe when the main gas pipe is found to be leaked, starting the electromagnetic valves on the control devices by the control devices to close the main gas pipe and seal the main gas pipe, and starting the electromagnetic valves by the control devices on the branch gas pipes to close the branch gas pipes when the branch gas pipes are found to be leaked;
3) when the leakage of the gas transmission main pipe is found, the control devices of the two connection devices connected with the leaked gas transmission main pipe close the gas transmission main pipe, and simultaneously control the first warning lamp and the second warning lamp to flicker to prompt the leakage pipeline to be marked;
4) after the repair is finished, the air pressure sensor in the pipeline detects the air pressure condition and feeds the air pressure condition back to the control device, and the control device can open the electromagnetic valve on the control device and close the first warning lamp and the second warning lamp.
The invention has the beneficial effects that: through being provided with device, shell, detection box, baroceptor and controlling means of plugging into, baroceptor distributes around pipeline annular array, makes its atmospheric pressure condition in can effectual detection pipeline, then feeds back the controlling means with the atmospheric pressure condition. In addition, the metal rubber sealing rings used for preventing gas leakage are arranged on two sides of the inner wall of the shell and are fixedly connected with the shell, more than one through hole is formed in each metal rubber sealing ring, and the through holes are distributed at equal intervals. The metal rubber sealing ring not only has the elasticity of rubber, but also has the excellent characteristics of metal, and simultaneously, can bear pressure, and has the dual functions of bearing pressure and sealing in a certain range. The supporting plate is arranged below the detection box and symmetrically arranged, the supporting plate is connected with the detection box through bolts, the shell is provided with slots matched with the supporting plate, the supporting plate is inserted into the slots, and the detection box is detachably connected with the shell through the supporting plate and the slots. The backup pad inserts in the slot, can dismantle detection box and shell, makes things convenient for the maintenance inspection. The connection devices are respectively provided with electromagnetic valves which are fixedly connected with the connection devices respectively, and the electromagnetic valves are electrically connected with the control devices respectively. The electromagnetic valve can close the leaked pipeline, and effectively prevents the gas from being continuously conveyed and leaked. Detect the box both sides and be provided with first warning light and second warning light, first warning light and second warning light all rather than detection box fixed connection separately, first warning light and second warning light all rather than the controlling means electric connection separately. Through being provided with first warning light and second warning light, can effectually come out the pipeline mark that will take place to leak, make things convenient for the staff to repair. The first gas transmission main pipe, the second gas transmission main pipe and the gas transmission branch pipe are internally provided with a reducing detection device, the reducing detection device comprises a pressure sensor, a base, a spring and a connecting rod, and the pressure sensor is electrically connected with respective control devices. The pressure sensor can effectively feed back the pressure condition of the changed inner diameter of the pipeline to the control device. The base and the spring are symmetrically distributed, the pressure sensor is embedded into the base and is fixedly connected with the spring, and the connecting rod is fixedly connected with the spring. Through pressure sensor and spring coupling, when the spring compression, thereby the pressure change detects the reducing condition of pipeline inside. The outer surfaces of the first main gas transmission pipe, the second main gas transmission pipe and the gas transmission branch pipes are provided with anticorrosive coatings. Through being provided with anticorrosive coating, can effectually prevent that first gas transmission is responsible for, second gas transmission is responsible for and gas transmission branch pipe takes place the corrosion, prolongs its life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a partial plan view of a detection apparatus for a natural gas pipeline according to the present invention.
Fig. 2 is a sectional view of a connection device of a detection device for a natural gas pipeline according to the present invention.
Fig. 3 is a partial perspective view of a metal rubber seal ring of the detection device for a natural gas pipeline according to the present invention.
Fig. 4 is a sectional view of a gas transmission branch pipe of a detection apparatus for a natural gas pipeline according to the present invention.
Fig. 5 is a partial structural schematic diagram of a detection device of a natural gas pipeline according to the present invention.
In the figure: 1. a first gas transmission main pipe; 2. a second gas transmission main pipe; 3. a docking device; 4. a gas delivery branch pipe; 5. a housing; 6. a detection cartridge; 7. a control device; 8. an air pressure sensor; 9. a metal rubber seal ring; 10. perforating; 11. a support plate; 12. an electromagnetic valve; 13. a first warning light; 14. a second warning light; 15. a pressure sensor; 16. a base; 17. a spring; 18. a connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a conventional manner such as bolt fixing, pin shaft connecting, adhesive fixing, or rivet fixing, which is commonly used in the prior art, and therefore, the detailed description thereof will not be provided in the examples.
Example 1
As shown in fig. 1-2, a detection device for a natural gas pipeline includes a first main gas transmission pipe 1, a second main gas transmission pipe 2 and a connection device 3, the connection device 3 is provided with more than one, one end of the connection device 3 is fixedly connected with the first main gas transmission pipe 1, the other end of the connection device 3 is fixedly connected with the second main gas transmission pipe 2, the first main gas transmission pipe 1 is fixedly connected with the second main gas transmission pipe 2 through the connection device 3, the first main gas transmission pipe 1 and the second main gas transmission pipe 2 are both provided with a gas transmission branch pipe 4, the gas transmission branch pipes 4 are both fixedly connected with the first main gas transmission pipe 1 and the second main gas transmission pipe 2 through the connection device 3, the connection device 3 includes a housing 5, a detection box 6 is provided on the housing 5, a control device 7 is provided in the detection box 6, the detection box 6 wraps the control device 7, the control device 7 is fixedly connected with the detection box 6, the first gas transmission main pipe 1, the second gas transmission main pipe 2 and the gas transmission branch pipes 4 are internally provided with gas pressure sensors 8, the gas pressure sensors 8 are distributed in an annular array, the gas pressure sensors 8 are fixedly connected with the first gas transmission main pipe 1, the second gas transmission main pipe 2 and the gas transmission branch pipes 4 respectively, and the gas pressure sensors 8 are electrically connected with the control device 7. Through being provided with device, shell, detection box, baroceptor and controlling means of plugging into, baroceptor distributes around pipeline annular array, makes its atmospheric pressure condition in can effectual detection pipeline, then feeds back the controlling means with the atmospheric pressure condition.
The beneficial effect of this embodiment does: through being provided with device, shell, detection box, baroceptor and controlling means of plugging into, baroceptor distributes around pipeline annular array, makes its atmospheric pressure condition in can effectual detection pipeline, then feeds back the controlling means with the atmospheric pressure condition.
Example 2
As shown in fig. 1-5, a detection device for a natural gas pipeline includes a first main gas transmission pipe 1, a second main gas transmission pipe 2 and a connection device 3, the connection device 3 is provided with more than one, one end of the connection device 3 is fixedly connected with the first main gas transmission pipe 1, the other end of the connection device 3 is fixedly connected with the second main gas transmission pipe 2, the first main gas transmission pipe 1 is fixedly connected with the second main gas transmission pipe 2 through the connection device 3, the first main gas transmission pipe 1 and the second main gas transmission pipe 2 are both provided with a gas transmission branch pipe 4, the gas transmission branch pipes 4 are both fixedly connected with the first main gas transmission pipe 1 and the second main gas transmission pipe 2 through the connection device 3, the connection device 3 includes a housing 5, a detection box 6 is provided on the housing 5, a control device 7 is provided in the detection box 6, the detection box 6 wraps the control device 7, the control device 7 is fixedly connected with the detection box 6, the first gas transmission main pipe 1, the second gas transmission main pipe 2 and the gas transmission branch pipes 4 are internally provided with gas pressure sensors 8, the gas pressure sensors 8 are distributed in an annular array, the gas pressure sensors 8 are fixedly connected with the first gas transmission main pipe 1, the second gas transmission main pipe 2 and the gas transmission branch pipes 4 respectively, and the gas pressure sensors 8 are electrically connected with the control device 7. Through being provided with device, shell, detection box, baroceptor and controlling means of plugging into, baroceptor distributes around pipeline annular array, makes its atmospheric pressure condition in can effectual detection pipeline, then feeds back the controlling means with the atmospheric pressure condition.
5 inner wall both sides of shell all are provided with the metal rubber seal 9 that is used for preventing gas leakage, metal rubber seal 9 all with 5 fixed connection of shell, be provided with perforation 10 on the metal rubber seal 9, perforation 10 is provided with more than one, perforation 10 is equidistant distribution setting. The metal rubber sealing ring not only has the elasticity of rubber, but also has the excellent characteristics of metal, and simultaneously, can bear pressure, and has the dual functions of bearing pressure and sealing in a certain range.
The metal rubber seal ring 9 comprises a first titanium alloy layer, a second titanium alloy layer and a silica gel layer, wherein the first titanium alloy layer and the second titanium alloy layer are both bonded with the silica gel layer, and the silica gel layer is located between the first titanium alloy layer and the second titanium alloy layer.
Be provided with backup pad 11 below the detection box 6, backup pad 11 is the symmetric distribution setting, backup pad 11 all with detection box 6 bolted connection, be provided with on the shell 5 with the backup pad slot (not shown) that matches mutually, backup pad 11 inserts in the slot, detection box 6 can dismantle with shell 5 through backup pad 11 and slot and be connected. The backup pad inserts in the slot, can dismantle detection box and shell, makes things convenient for the maintenance inspection.
The connection devices 3 are all provided with electromagnetic valves 12, the electromagnetic valves 12 are all fixedly connected with the connection devices 3 on the respective electromagnetic valves, and the electromagnetic valves 12 are all electrically connected with the control devices 7 on the respective electromagnetic valves. The electromagnetic valve can close the leaked pipeline, and effectively prevents the gas from being continuously conveyed and leaked.
Detect 6 both sides of box and be provided with first warning light 13 and second warning light 14, first warning light 13 and second warning light 14 all rather than detection box 6 fixed connection on separately, first warning light 13 and second warning light 14 all rather than controlling means 7 electric connection on separately. Through being provided with first warning light and second warning light, can effectually come out the pipeline mark that will take place to leak, make things convenient for the staff to repair.
All be provided with reducing detection device in first gas transmission main pipe 1, second gas transmission main pipe 2 and the gas transmission branch pipe 4, reducing detection device includes pressure sensor 15, base 16, spring 17 and connecting rod 18, pressure sensor 15 all is rather than controlling means 7 electric connection on them. The pressure sensor can effectively feed back the pressure condition of the changed inner diameter of the pipeline to the control device.
The outer surfaces of the first main gas transmission pipe 1, the second main gas transmission pipe 2 and the gas transmission branch pipe 4 are all provided with anticorrosive coatings (not shown). Through being provided with anticorrosive coating, can effectually prevent that first gas transmission is responsible for, second gas transmission is responsible for and gas transmission branch pipe takes place the corrosion, prolongs its life.
The beneficial effect of this embodiment does: through being provided with device, shell, detection box, baroceptor and controlling means of plugging into, baroceptor distributes around pipeline annular array, makes its atmospheric pressure condition in can effectual detection pipeline, then feeds back the controlling means with the atmospheric pressure condition. In addition, the metal rubber sealing rings used for preventing gas leakage are arranged on two sides of the inner wall of the shell and are fixedly connected with the shell, more than one through hole is formed in each metal rubber sealing ring, and the through holes are distributed at equal intervals. The metal rubber sealing ring not only has the elasticity of rubber, but also has the excellent characteristics of metal, and simultaneously, can bear pressure, and has the dual functions of bearing pressure and sealing in a certain range. The supporting plate is arranged below the detection box and symmetrically arranged, the supporting plate is connected with the detection box through bolts, the shell is provided with slots matched with the supporting plate, the supporting plate is inserted into the slots, and the detection box is detachably connected with the shell through the supporting plate and the slots. The backup pad inserts in the slot, can dismantle detection box and shell, makes things convenient for the maintenance inspection. The connection devices are respectively provided with electromagnetic valves which are fixedly connected with the connection devices respectively, and the electromagnetic valves are electrically connected with the control devices respectively. The electromagnetic valve can close the leaked pipeline, and effectively prevents the gas from being continuously conveyed and leaked. Detect the box both sides and be provided with first warning light and second warning light, first warning light and second warning light all rather than detection box fixed connection separately, first warning light and second warning light all rather than the controlling means electric connection separately. Through being provided with first warning light and second warning light, can effectually come out the pipeline mark that will take place to leak, make things convenient for the staff to repair. The first gas transmission main pipe, the second gas transmission main pipe and the gas transmission branch pipe are internally provided with a reducing detection device, the reducing detection device comprises a pressure sensor, a base, a spring and a connecting rod, and the pressure sensor is electrically connected with respective control devices. The pressure sensor can effectively feed back the pressure condition of the changed inner diameter of the pipeline to the control device. The base and the spring are symmetrically distributed, the pressure sensor is embedded into the base and is fixedly connected with the spring, and the connecting rod is fixedly connected with the spring. Through pressure sensor and spring coupling, when the spring compression, thereby the pressure change detects the reducing condition of pipeline inside. The outer surfaces of the first main gas transmission pipe, the second main gas transmission pipe and the gas transmission branch pipes are provided with anticorrosive coatings. Through being provided with anticorrosive coating, can effectually prevent that first gas transmission is responsible for, second gas transmission is responsible for and gas transmission branch pipe takes place the corrosion, prolongs its life.
The invention provides a detection method of a detection device of a natural gas pipeline, which comprises the following steps:
1) the main gas transmission pipe and the branch gas transmission pipe are respectively connected through a connecting device;
2) then, detecting the air pressure condition in the pipeline by adopting an air pressure sensor, feeding the air pressure condition back to respective control devices by the air pressure sensors in the two connection devices connected with the leaked main gas pipe when the main gas pipe is found to be leaked, starting the electromagnetic valves on the control devices by the control devices to close the main gas pipe and seal the main gas pipe, and starting the electromagnetic valves by the control devices on the branch gas pipes to close the branch gas pipes when the branch gas pipes are found to be leaked;
3) when the leakage of the gas transmission main pipe is found, the control devices of the two connection devices connected with the leaked gas transmission main pipe close the gas transmission main pipe, and simultaneously control the first warning lamp and the second warning lamp to flicker to prompt the leakage pipeline to be marked;
4) after the repair is finished, the air pressure sensor in the pipeline detects the air pressure condition and feeds the air pressure condition back to the control device, and the control device can open the electromagnetic valve on the control device and close the first warning lamp and the second warning lamp.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.
Claims (1)
1. The utility model provides a detection device of natural gas line which characterized in that: the device comprises a first gas transmission main pipe, a second gas transmission main pipe and a connection device, wherein the connection device is provided with more than one, one end of the connection device is fixedly connected with the first gas transmission main pipe, the other end of the connection device is fixedly connected with the second gas transmission main pipe, the first gas transmission main pipe is fixedly connected with the second gas transmission main pipe through the connection device, gas transmission branch pipes are respectively arranged on the first gas transmission main pipe and the second gas transmission main pipe, the gas transmission branch pipes are respectively fixedly connected with the first gas transmission main pipe and the second gas transmission main pipe through the connection device, the connection device comprises a shell, a detection box is arranged on the shell, a control device is arranged in the detection box, the detection box wraps the control device, the control device is fixedly connected with the detection box, and air pressure sensors are respectively arranged in the first gas transmission main pipe, the second gas transmission main pipe and the gas transmission branch pipes, the air pressure sensors are distributed in an annular array, the air pressure sensors are fixedly connected with a first air transmission main pipe, a second air transmission main pipe and an air transmission branch pipe which are arranged on the air pressure sensors respectively, the air pressure sensors are electrically connected with a control device, metal rubber sealing rings for preventing air leakage are arranged on two sides of the inner wall of the shell, the metal rubber sealing rings are fixedly connected with the shell, through holes are arranged on the metal rubber sealing rings, more than one through hole is arranged, the through holes are distributed at equal intervals, a supporting plate is arranged below the detection box and is symmetrically distributed, the supporting plate is connected with the detection box through bolts, slots matched with the supporting plate are arranged on the shell, the supporting plate is inserted into the slots, the detection box is detachably connected with the shell through the supporting plate and the slots, and electromagnetic valves are arranged on the connection device, the electromagnetic valves are fixedly connected with the respective connecting devices, the electromagnetic valves are electrically connected with the respective control devices, a first warning lamp and a second warning lamp are arranged on two sides of the detection box, the first warning lamp and the second warning lamp are fixedly connected with the detection box respectively, the first warning lamp and the second warning lamp are electrically connected with respective control devices, the first main gas transmission pipe, the second main gas transmission pipe and the gas transmission branch pipe are internally provided with variable diameter detection devices, the diameter-variable detection device comprises pressure sensors, a base, a spring and a connecting rod, wherein the pressure sensors are electrically connected with respective control devices, the base and the spring are symmetrically distributed, the pressure sensor is embedded in the base, the pressure sensor is fixedly connected with the spring, and the connecting rod is fixedly connected with the spring;
the detection method of the detection device for the natural gas pipeline comprises the following steps:
1) the main gas transmission pipe and the branch gas transmission pipe are respectively connected through a connecting device;
2) then, detecting the air pressure condition in the pipeline by adopting an air pressure sensor, feeding the air pressure condition back to respective control devices by the air pressure sensors in the two connection devices connected with the leaked main gas pipe when the main gas pipe is found to be leaked, starting the electromagnetic valves on the control devices by the control devices to close the main gas pipe and seal the main gas pipe, and starting the electromagnetic valves by the control devices on the branch gas pipes to close the branch gas pipes when the branch gas pipes are found to be leaked;
3) when the leakage of the gas transmission main pipe is found, the control devices of the two connection devices connected with the leaked gas transmission main pipe close the gas transmission main pipe, and simultaneously control the first warning lamp and the second warning lamp to flicker to prompt the leakage pipeline to be marked;
4) after the repair is finished, the air pressure sensor in the pipeline detects the air pressure condition and feeds the air pressure condition back to the control device, and the control device can open the electromagnetic valve on the control device and close the first warning lamp and the second warning lamp.
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| CN112709934B (en) * | 2019-10-24 | 2024-06-25 | 中国石油天然气股份有限公司 | Pipeline pressure detection device |
| CN110848577B (en) * | 2019-11-15 | 2021-12-21 | 广东华晟安全职业评价有限公司 | Automatic safety detection device for oil and gas pipeline transportation of Internet of things and use method thereof |
| CN112032572B (en) * | 2020-09-08 | 2021-12-21 | 河北振创电子科技有限公司 | Natural gas line leakage detection device |
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| CN109595471A (en) | 2019-04-09 |
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