CN216868194U - Gas stopping operation device for gas pipeline - Google Patents
Gas stopping operation device for gas pipeline Download PDFInfo
- Publication number
- CN216868194U CN216868194U CN202123277096.0U CN202123277096U CN216868194U CN 216868194 U CN216868194 U CN 216868194U CN 202123277096 U CN202123277096 U CN 202123277096U CN 216868194 U CN216868194 U CN 216868194U
- Authority
- CN
- China
- Prior art keywords
- gas
- ball valve
- vertical pipe
- pressure
- pressure gauge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pipeline Systems (AREA)
Abstract
The utility model relates to the technical field of gas transportation, and discloses a gas stopping operation device for a gas pipeline, which comprises a first vertical pipe, a second vertical pipe, a transverse pipe, a first ball valve, a second ball valve, a third ball valve, a fourth ball valve, a first pressure gauge, a second pressure gauge and a main valve arranged on the gas pipeline, wherein the first vertical pipe is connected with the second vertical pipe through the first pressure gauge; the lower end of the first vertical pipe is communicated with a gas pipeline on one side of the main valve through a first ball valve, and the lower end of the second vertical pipe is communicated with a gas pipeline on the other side of the main valve through a fourth ball valve; one end of the transverse pipe is communicated with the first vertical pipe through a second ball valve, and the other end of the transverse pipe is communicated with the second vertical pipe through a third ball valve; the first pressure gauge is used for measuring the air pressure in the first vertical pipe, and the second pressure gauge is used for measuring the air pressure in the second vertical pipe. The gas stopping operation device of the gas pipeline avoids the phenomena of noise and pollution caused by directly discharging gas into the atmosphere.
Description
Technical Field
The utility model relates to the technical field of gas delivery, in particular to a gas stopping operation device for a gas pipeline.
Background
In the gas-stopping operation of the gas pipeline such as rush repair, maintenance, new pipe connection and the like, huge noise is often generated due to the fact that residual gas of the gas in a gas-stopping pipe network needs to be discharged, the noise generated when the gas is discharged at present is usually more than 45 decibels, the phenomena of noise disturbing residents, user complaints and the like are caused, and the normal life of residents nearby an operation point is greatly influenced; moreover, the direct discharge of fuel gas can pollute the environment and is an economic waste.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: when the gas pipeline discharges the residual gas in the gas stopping pipeline network in the gas stopping operation, noise is generated, the environment is polluted, and waste is caused.
In order to solve the technical problem, the utility model provides a gas stopping operation device for a gas pipeline, which comprises a first vertical pipe, a second vertical pipe, a transverse pipe, a first ball valve, a second ball valve, a third ball valve, a fourth ball valve, a first pressure gauge, a second pressure gauge and a main valve arranged on the gas pipeline, wherein the first vertical pipe is connected with the second vertical pipe through the first pressure gauge;
the lower end of the first vertical pipe is communicated with a gas pipeline on one side of the main valve through the first ball valve, and the lower end of the second vertical pipe is communicated with a gas pipeline on the other side of the main valve through the fourth ball valve;
one end of the transverse pipe is communicated with the first vertical pipe through the second ball valve, and the other end of the transverse pipe is communicated with the second vertical pipe through the third ball valve;
the first pressure gauge is used for measuring the air pressure in the first vertical pipe, and the second pressure gauge is used for measuring the air pressure in the second vertical pipe.
Furthermore, the transverse pipe is a high-pressure gas metal mesh hose.
Further, the first vertical pipe and the second vertical pipe are both seamless steel pipes.
Furthermore, be equipped with first connector on the side of first riser, the side of second riser is equipped with the second connector, the second ball valve with first connector is connected, the third ball valve with the second connector is connected.
Further, the upper end of the first vertical pipe and the upper end of the second vertical pipe are both higher than the ground.
Furthermore, the gas stopping operation device further comprises a third pressure gauge and a helium tank, the helium tank is connected with the pressure regulating device through a gas connecting hose, and the third pressure gauge is arranged on the gas connecting hose.
The utility model provides an it stops gas operation device for gas pipeline, compares with prior art, and its beneficial effect lies in: before stopping gas, the first vertical pipe, the transverse pipe and the second vertical pipe are used for temporarily conveying the gas at the normal pressure end of the pipeline section at the upstream of the main valve to the pipeline section at the downstream of the main valve needing gas stopping operation, the gas is used as temporary gas supplement at the gas stopping operation end, and the gas pressure in the pipeline section needing gas stopping operation is controlled through the corresponding ball valve, so that the normal use requirement of a user is met; after all ball valves are closed during gas cut-off, the pressure of the pipeline at the gas cut-off operation end is far smaller than that of the pipeline at the normal pressure end, the pressure of the pipeline at the gas cut-off operation end is 0 quickly, noise can not be generated to disturb residents, gas in a gas cut-off pipeline does not need to be discharged into the atmosphere, the environment can not be polluted, and the cost is saved.
Drawings
FIG. 1 is a schematic view of a gas cutoff operation device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a third pressure gauge and helium tank according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of gas cut-off operation according to an embodiment of the present invention.
The pressure regulating device comprises a first vertical pipe, a second vertical pipe, a 3-transverse pipe, a 4-first ball valve, a 5-second ball valve, a 6-third ball valve, a 7-fourth ball valve, a 8-first pressure gauge, a 9-second pressure gauge, a 10-main valve, a 11-ground, a 12-third pressure gauge, a 13-helium tank and a 14-pressure regulating device.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, an embodiment of the present invention provides a gas stopping operation device for a gas pipeline, including a first vertical pipe 1, a second vertical pipe 2, a horizontal pipe 3, a first ball valve 4, a second ball valve 5, a third ball valve 6, a fourth ball valve 7, a first pressure gauge 8, a second pressure gauge 9, and a main valve 10 for being disposed on the gas pipeline;
the lower end of the first vertical pipe 1 is communicated with a gas pipeline on one side of the main valve 10 through a first ball valve 4, and the lower end of the second vertical pipe 2 is communicated with a gas pipeline on the other side of the main valve 10 through a fourth ball valve 7;
one end of the transverse pipe 3 is communicated with the first vertical pipe 1 through the second ball valve 5, and the other end of the transverse pipe 3 is communicated with the second vertical pipe 2 through the third ball valve 6;
the first pressure gauge 8 is used for measuring the air pressure in the first vertical pipe 1, and the second pressure gauge 9 is used for measuring the air pressure in the second vertical pipe 2.
Based on the scheme, before gas stopping, the gas at the normal pressure end of the pipeline section at the upstream of the main valve 10 is temporarily conveyed to the pipeline section at the downstream of the main valve 10, which needs gas stopping operation, by using the first vertical pipe 1, the horizontal pipe 3 and the second vertical pipe 2, and is used as temporary gas supplement at the gas stopping operation end, and the gas pressure in the pipeline section, which needs gas stopping operation, is controlled by the corresponding ball valve, so that the normal use requirement of a user is met; after all ball valves are closed during gas cut-off, the pressure of the pipeline at the gas cut-off operation end is far smaller than that of the pipeline at the normal pressure end, the pressure of the pipeline at the gas cut-off operation end is 0 quickly, noise is not generated to disturb residents, gas in the gas cut-off pipeline is not required to be discharged into the atmosphere, the environment is not polluted, and the cost is saved.
Specifically, the main valve 10 can be closed in advance about 3 hours before the planned gas stopping time, then the first ball valve 4 and the fourth ball valve 7 are opened, the second ball valve 5 and the third ball valve 6 are in a closed state, the pressure is measured by the first pressure gauge 8 and the second pressure gauge 9 respectively, the measurement value of the first pressure gauge 8 is the normal pressure end pressure, the measurement value of the second pressure gauge 9 is the gas stopping operation end pressure value, the gas stopping operation end pressure can slowly drop, when the pressure drops to a set value, the second ball valve 5 and the third ball valve 6 are opened, the measurement value of the second pressure gauge 9 is stabilized at a set value, the set value pressure can meet the normal use of gas of a user end, but can be smaller than the pressure of a normal pressure end, the second ball valve 5 and the third ball valve 6 are closed in the first few minutes when the planned gas stopping time period is reached, the gas stopping operation end pipeline pressure is gradually reduced to 0MPA, avoiding the gas emission to the outside.
Optionally, the cross pipe 3 of this embodiment is a high-pressure gas metal mesh hose, and the high-pressure gas metal mesh hose has certain flexibility, and can satisfy the requirement of ventilation, can reduce the installation error of the first riser 1 and the second riser 2, and when there is great error in the distance between two risers, can also assemble on the spot, adapt to local site environment.
Optionally, in this embodiment, the first vertical pipe 1 and the second vertical pipe 2 are both seamless steel pipes, and the seamless steel pipes are integrally processed, so that the gas tightness is good, and it can be ensured that the gas cannot leak in the transmission process.
In this embodiment, in order to facilitate the connection between the horizontal pipe 3 and the first vertical pipe 1 and the second vertical pipe 2, a first connector is disposed on the side surface of the first vertical pipe 1, a second connector is disposed on the side surface of the second vertical pipe 2, the second ball valve 5 is connected to the first connector, and the third ball valve 6 is connected to the second connector.
As shown in fig. 1, for installation and operation, the upper end of the first riser 1 and the upper end of the second riser 2 are both higher than the ground 11, and one person may be respectively located in the ground 11 and the underground well.
As shown in fig. 2, the gas stopping operation device of this embodiment further includes a third pressure gauge 12 and a helium tank 13, the helium tank 13 is connected to the pressure regulating device 14 through a gas connection hose, and the third pressure gauge 12 is disposed on the gas connection hose. The pressure regulating device 14 is a device which needs to be maintained during the gas supply stopping operation, and the helium tank 13 is used for introducing helium to the user side when detecting whether the pipeline leaks gas before supplying gas to the user again.
Specifically, as shown in fig. 2, when the pressure regulating device 14 needs to be stopped for maintenance, after the pressure regulating device is stopped in the above manner, A, B, C three gas vertical pipes immediately enter a gas stopping state, and just one gas stove is used by a user for cooking soup in a pot, the user does not know that the pressure regulating device 14 needs to be stopped urgently due to gas leakage, and just the flameout protection device of the indoor gas stove fails, and after the pressure regulating device 14 is maintained, the gas supply is recovered without checking, the gas stove using gas in the B will leak gas to the whole room or the whole house, and when the pressure regulating device 14 is maintained, the ignition source will cause unsafe accidents such as explosion when reaching the explosion limit value. In order to prevent the above unsafe accidents, before the gas is returned, the whole gas-cut gas pipe network is filled with helium (the helium is inert gas, is non-combustible gas and does not support combustion, and the helium has price advantage and stable gas property compared with nitrogen, carbon dioxide and other inert gases), when the pressure of the filled helium in the whole gas-cut gas pipe network rises to 2500Pa, the helium is stopped being filled, a pressure gauge is connected to monitor the pressure, when the monitored pressure does not change within 3 to 5 minutes (the monitored pressure is 2500Pa), the helium represents a gas pipeline in the range of the gas pipe network in which the gas is stopped, and the potential safety hazard of gas leakage does not exist through testing, and at the moment, the helium in the pipeline can be discharged, and the gas supply can be returned. Otherwise, if the pipeline monitoring pressure is continuously reduced, the gas pipeline in the range of the gas pipe network without gas is revealed, the gas leakage point must be found out, the helium is filled after the gas leakage point is located, the pipeline pressure is monitored, and the gas supply can be recovered when no abnormality occurs after the pressure is stabilized.
As shown in fig. 3, an embodiment of the present invention further provides a gas stopping operation method for a gas pipeline, which is implemented by using the above gas stopping operation device, and includes:
s1, closing the main valve 10 before the planned gas stopping time, opening the first ball valve 4 and the fourth ball valve 7, and closing the second ball valve 5 and the third ball valve 6;
s2, when the measured value of the second pressure gauge 9 is reduced to a set value, opening the second ball valve 5 and the third ball valve 6, and stabilizing the measured value of the second pressure gauge 9 at the set value by adjusting the second ball valve 5 and the third ball valve 6;
and S3, closing the second ball valve 5 and the third ball valve 6 when the air stopping time is planned.
Wherein the set value is 0.03 MPA.
Specifically, can close all relevant gas pipeline valves about this pipe network gas stopping operation 3 hours before plan gas stopping time, open first ball valve 4, fourth ball valve 7, close second ball valve 5, third ball valve 6, look over the pressure reading that shows on first manometer 8, the second manometer 9 respectively, the pressure reading of the first manometer 8 of normal atmospheric pressure end is: 0.25MPA (pressure of medium-pressure pipe network operation), the pressure reading of the second pressure gauge 9 is 0.25MPA at the beginning, and the pressure reading continuously decreases after the time lapse (because the relevant blocked gas pipeline valve is closed in the pipe network gas stopping operation piece area, and the user in the gas stopping pipe network continuously uses gas, the pressure in the gas stopping pipe network continuously decreases), when the pressure reading of the second pressure gauge 9 decreases to 0.03MPA, and the time period of planned gas stopping is not reached, the pressure reading from the second ball valve 5, the third ball valve 6 to the second pressure gauge 9 needs to be slowly opened and stabilized at 0.03MPA, so that the gas at the normal pressure end temporarily passes through the high-pressure gas passing metal net hose to reach the gas stopping operation end to be used as temporary gas supplement at the gas stopping operation end; at this time, the pressure reading of the second pressure gauge 9 needs to be monitored, when the pressure is found to be higher than or lower than 0.03MPA, the opening and closing degrees of the second ball valve 5 and the third ball valve 6 are adjusted in time to stabilize the pressure reading of the second pressure gauge 9 at 0.03MPA (due to the air supply relationship of the pressure regulating device 14, when the inlet pressure of the pressure regulating device 14 is lower than 0.03MPA, the situation that the valve is cut off and the normal air supply cannot be continued occurs probably), and in the first few minutes of reaching the planned air supply stopping time period, the second ball valve 5 and the third ball valve 6 can be closed slowly, so that the pressure in the air supply stopping pipe gradually drops to 0MPA when the pressure reaches the planned air supply stopping time period.
To sum up, the embodiment of the utility model provides a gas stopping operation device and method for a gas pipeline, which have the following beneficial effects:
1. when the pipe network stops gas operation, the gas in the gas stopping pipe network does not need to be discharged into the atmosphere, and the environment is not polluted.
2. When the pipe network stops gas operation, the gas in the gas stopping pipe network does not need to be discharged into the atmosphere, and noise can not be generated to disturb residents.
3. When the pipe network stops the gas operation, need not discharge the gas in the gas stopping pipe network to the atmosphere, from the economic angle, directly discharge the gas and just equal direct consume, directly not discharge the gas and convert the user into and use, just equal to the profit of company, for example: DN630 gas pipe network needs to stop gas operation, when the gas pipe network is about 1000 meters, the volume of the gas pipe network is about 311.6 cubic meters, the price of the existing natural gas is 4 yuan per cubic meter (the intermediate value of civil gas, commercial gas and industrial gas), 1246.3 yuan is directly consumed when the operation directly discharges the gas, the operation does not directly discharge the gas and is converted into 1246.3 yuan which is profitable for users, and the emission-free technology is more profitable than direct emission technology and is 2492.5 yuan (single gas stop operation).
4. After the air supply stopping construction is completed and air supply needs to be resumed, the high-pressure air-passing metal mesh hose is used for resuming normal pressure air supply of the air supply stopping operation end, and compared with the method of directly opening the main valve 10 to resume normal pressure air supply, the normal pressure air supply is resumed, the dust raising size in a pipeline caused by pressure difference in the air supply resuming process can be greatly reduced, the risk of tripping of the pressure regulating equipment 14 at the air supply stopping operation end is reduced, and the air supply feeling of a user is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A gas stopping operation device for a gas pipeline is characterized by comprising a first vertical pipe, a second vertical pipe, a transverse pipe, a first ball valve, a second ball valve, a third ball valve, a fourth ball valve, a first pressure gauge, a second pressure gauge and a main valve arranged on the gas pipeline;
the lower end of the first vertical pipe is communicated with a gas pipeline on one side of the main valve through the first ball valve, and the lower end of the second vertical pipe is communicated with a gas pipeline on the other side of the main valve through the fourth ball valve;
one end of the transverse pipe is communicated with the first vertical pipe through the second ball valve, and the other end of the transverse pipe is communicated with the second vertical pipe through the third ball valve;
the first pressure gauge is used for measuring the air pressure in the first vertical pipe, and the second pressure gauge is used for measuring the air pressure in the second vertical pipe.
2. A gas stop working device according to claim 1, wherein the cross tube is a high pressure gas metal mesh hose.
3. A gas stop working device according to claim 1, wherein the first riser and the second riser are both seamless steel tubes.
4. A gas stop operation device according to claim 1, wherein a first connector is provided on a side surface of the first vertical pipe, a second connector is provided on a side surface of the second vertical pipe, the second ball valve is connected to the first connector, and the third ball valve is connected to the second connector.
5. A gas stop working device according to claim 1, wherein the upper end of the first riser and the upper end of the second riser are above ground.
6. The gas stopping operation device according to claim 1, further comprising a third pressure gauge and a helium tank, wherein the helium tank is connected with the pressure regulating device through a gas connecting hose, and the third pressure gauge is arranged on the gas connecting hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123277096.0U CN216868194U (en) | 2021-12-23 | 2021-12-23 | Gas stopping operation device for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123277096.0U CN216868194U (en) | 2021-12-23 | 2021-12-23 | Gas stopping operation device for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216868194U true CN216868194U (en) | 2022-07-01 |
Family
ID=82147994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123277096.0U Active CN216868194U (en) | 2021-12-23 | 2021-12-23 | Gas stopping operation device for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216868194U (en) |
-
2021
- 2021-12-23 CN CN202123277096.0U patent/CN216868194U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204254248U (en) | LNG entrucking is prized | |
| CN114352940A (en) | Gas stopping operation device and method for gas pipeline | |
| CN204228385U (en) | A kind of off-line testing device for demarcating safety valve setting value and off-line testing system | |
| CN111992071A (en) | Hydrogen energy utilization fuel gas mixing system and hydrogen and natural gas ratio control method | |
| CN112214904B (en) | Valve chamber pressure drop rate calculation method under suction condition of gas pipeline compressor | |
| CN206019960U (en) | Lift non-return valve work seal detection means | |
| CN216868194U (en) | Gas stopping operation device for gas pipeline | |
| CN205138764U (en) | Be used for aviation pneumatic valve high temperature, large -traffic combined test platform | |
| CN110901872A (en) | Methanol fuel double-wall pipe inerting system | |
| CN112096353A (en) | Emptying device and gas injection system | |
| CN106499889B (en) | A kind of safety valve pressure pilot system based on trepanning flange | |
| CN113864635B (en) | Small storage tank gas supply method and system | |
| CN114992518A (en) | Movable type air-carrying operation diffusion pressure stabilizing device and use method thereof | |
| CN111122151B (en) | Breather valve flow testing device and testing method thereof | |
| CN204390751U (en) | A kind of nuclear power plant reactor coolant system injector testing system | |
| CN202886079U (en) | Sealing performance test device of mechanical penetration pieces of safety shell in nuclear power station | |
| CN108933269B (en) | Device and method for detecting stack blow-by gas flow of proton exchange membrane fuel cell | |
| CN104197200B (en) | A kind of combustion gas building regulation boxes and using method thereof | |
| CN216619360U (en) | Venturi supercharged gas heat value lifting system | |
| CN217002111U (en) | High security fire pump oil feeding system | |
| CN214305882U (en) | Combined tool for valve | |
| CN220287111U (en) | Emergency drainage device for silane gas | |
| CN220870614U (en) | One inlet and one outlet gas bus bar | |
| CN201059422Y (en) | Gas supply pressure regulating apparatus | |
| CN208169993U (en) | A kind of coal changes gas LNG cylinder group vaporization station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |