CN2679460Y - Gas seal shut-off device for gas pipeline - Google Patents
Gas seal shut-off device for gas pipeline Download PDFInfo
- Publication number
- CN2679460Y CN2679460Y CN 03234185 CN03234185U CN2679460Y CN 2679460 Y CN2679460 Y CN 2679460Y CN 03234185 CN03234185 CN 03234185 CN 03234185 U CN03234185 U CN 03234185U CN 2679460 Y CN2679460 Y CN 2679460Y
- Authority
- CN
- China
- Prior art keywords
- gas
- valve
- pipe
- sealing gland
- pipeline
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 43
- 210000004907 gland Anatomy 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000002360 explosive Substances 0.000 abstract description 10
- 238000002955 isolation Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract 2
- 230000002588 toxic effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 57
- 238000000926 separation method Methods 0.000 description 11
- 231100000614 poison Toxicity 0.000 description 9
- 230000007096 poisonous effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
Images
Landscapes
- Pipeline Systems (AREA)
Abstract
The utility model discloses a gas seal closes off device that is arranged in temporary isolation or cuts off gas pipeline of conveying gas among the gas pipeline. In order to make the device simple in structure, safe, reliable and simple and convenient to operate, the device comprises an inlet valve, one end of the inlet valve is connected with a gas inlet end of a gas pipeline, the other end of the inlet valve is connected with one end of a gas seal pipe, the other end of the gas seal pipe is communicated with an outlet valve, a gas source pipe communicated with the gas seal pipe is connected onto the gas seal pipe, and a valve is arranged on the gas source pipe. The device can effectively avoid the potential safety hazard generated by the leakage of toxic, harmful, inflammable and explosive gas, greatly reduces the workload of operators, has the characteristics of simple structure, small volume, convenient installation, flexible operation and the like, is particularly suitable for the temporary isolation and cut-off occasions of the gas in toxic, harmful, inflammable and explosive gas pipelines, and can replace the plugging plate and the water seal which are usually adopted at present.
Description
Technical field
The utility model relates to temporary isolation, the shut-off means that uses in a kind of gas transmission pipeline, and the sealing gland of using in especially poisonous, harmful, the flammable explosive gas pipeline is closed the border disconnected device.
Background technique
Carrying pipe network poisonous, harmful, flammable explosive gas, in gaspipe network, to pipe network and facility overhauls or during operation, often need certain part pipe network or pipeline are effectively isolated from pipe network system, through operation such as overhauling after purging.In order to prevent, just must guarantee the validity of cutting off because of accidents such as the poisoning that leak to produce, blasts.
Traditional isolation cutting-off method is for using closure plate or water seal arrangement, the former be between the flange plate of flange plate on the gas transmission pipeline or valve, insert one with the big or small identical steel plate of flangeseal face, form sealing with the flangeseal face of both sides respectively by steel plate, prevent that poisonous, harmful, flammable explosive gas from leaking and with the effective purpose of cut-out of pipeline thereby reach.Part is poisonous, harmful, flammable explosive gas leaks from flange plate but all will make during the assembling and disassembling closure plate, and need operate by the personnel of specialty, entire job is not only taken a lot of work but also time-consuming, and accidents such as operation is relatively dangerous, poisons easily, catch fire, blast.Water seal arrangement then is to utilize water or other liquid as sealing medium, in pipeline, seal in the pipeline section of a U-shaped, form water column by water inlet, overflow system with certain altitude, utilize the formed pressure reduction of height difference and the gas pressure of water column between import and outlet to balance each other, hinder the water column that gas passes through together thereby form, reach the purpose of effective cut-out gas.During the off-the-line water seal, by the system of discharging water the water in the U-shaped pipe is bled off, gas can recover circulation.But the sealing structure for water complexity of gas, needing to drop into bigger fund carries out the water seal design, installs, also need enough setting height(from bottom)s and space simultaneously, therefore a lot of places can't be used, and the time that the gas water seal puts into operation and off-the-line needs is long, need carry out the operation of a large amount of switch valves, very inconvenient.
The model utility content
For the isolation cutting-off method that overcomes existing gas piping easily because of leakage is caused danger, not only taken a lot of work but also time-consuming, institute takes up space big etc. deficiency, the utility model provides a kind of sealing gland simple in structure, safe and reliable and easy and simple to handle to close the border disconnected device.
The technological scheme that its technical problem that solves the utility model adopts is: the sealing gland of gas pipeline is closed the border disconnected device, comprise inlet valve, one end of inlet valve is connected with the gas inlet end of gas pipeline, the other end of inlet valve is connected with an end of sealing gland pipe, the other end of sealing gland pipe is communicated with outlet valve, be connected with the source of the gas pipe that is communicated with it on the sealing gland pipe, the source of the gas pipe is provided with valve.
The beneficial effects of the utility model are, owing to adopted the structure that between inlet valve and outlet valve, is connected the sealing gland pipe and injects separation gas, make part poisonous in the time of can effectively avoiding installation and remove closure plate, harmful, flammable explosive gas leaks and the potential safety hazard of generation from flange plate, reduced simultaneously operator's workload greatly, also can avoid the sealing structure for water complexity, the installing space that needs is big, build and drop into height, operation long shortcoming consuming time, and have simple in structure, volume is little, easy for installation, characteristics such as flexible operation, alternative closure plate and water seal are as poisonous, harmful, temporary effective isolation in the flammable explosive gas pipeline, the cutoff device that cuts off.
Description of drawings
Fig. 1 is the structural representation that installation of the present utility model connects.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, the sealing gland of gas pipeline of the present utility model is closed the border disconnected device, comprises inlet valve 1, and an end of inlet valve 1 is connected with the gas inlet end 9 of gas pipeline, it is characterized in that: the other end of inlet valve 1 is connected with an end of sealing gland pipe 6, and the other end of sealing gland pipe 6 is communicated with outlet valve 3.Be connected with the source of the gas pipe 10 that is communicated with it on the sealing gland pipe 6, separation gas such as air, nitrogen etc. inject sealing gland pipe 6 by source of the gas pipe 10.Source of the gas pipe 10 is provided with valve 4, in order to the injection or the shutoff of control separation gas.The gas of carrying in the gas pipeline is entered by gas inlet end 9, is sent by outlet valve 3 by sealing gland pipe 6 backs.When the temporary isolation of needs, when cutting off gas transmission pipeline, close inlet valve 1 and outlet valve 3, open valve 4, separation gas is injected sealing gland pipe 6 by source of the gas pipe 10, and make the pressure of the pressure of the separation gas in the sealing gland pipe 6 greater than gas inlet end in the pipeline 9, like this, even inlet valve 1 is not closed completely, the leakage direction that also can guarantee gas is that separation gas passes through inlet valve 1 to gas inlet end 9 from sealing gland pipe 6, can stop the poisonous of gas inlet end 9 like this, harmful, flammable explosive gas arrives outlet valve 3 places by sealing gland pipe 6, thereby reaches the purpose of effective cut-out.
In order to make maintenance wait that operation is reliable more, safety, exhaust stack 8 can also be set on the sealing gland pipe 6, exhaust stack 8 is provided with and diffuses valve 2, diffuses valve 2 and is in closed condition when flat.Open simultaneously during valve 4 on opening source of the gas pipe 10 and diffuse valve 2 on the exhaust stack 8, separation gas enters into sealing gland pipe 6, to remnants poisonous, harmful, flammable explosive gas purges and discharged by exhaust stack 8, after purging finishes, close and diffuse valve 2 on the exhaust stack 8, this moment, sealing gland pipe 6 internal pressures raise, and gas seal puts into operation automatically.During the off-the-line sealing gland, close the valve 4 on the source of the gas pipe 10 earlier, cut off separation gas, open inlet valve 1, outlet valve 3 then, can the off-the-line sealing gland.
Above-mentioned valve 4 can adopt pressure regulator valve, in order to regulate and the outlet pressure of control valve 4 is the interior pressure of sealing gland pipe 6, make its separation gas inject the pressure that sealing gland pipe 6 interior pressure are higher than pipeline gas inlet end 9, outlet pressure that can also regulating and controlling valve 4 is not more than inlet valve 1, outlet valve 3 or diffuses the Maximum operating pressure of valve 2, to prevent because superpressure causes the damage of valve.Can also be provided with pressure signal pipe 5 on the valve 4, the input end of pressure signal pipe 5 is communicated with gas inlet end 9, the pressure of the gas inlet end 9 that obtains by pressure signal pipe 5 is as signal source, is that the interior pressure of sealing gland pipe 6 is all the time greater than the pressure of gas inlet end 9 in order to the outlet pressure of control and regulating valve 4.If inlet valve 1, outlet valve 3 or diffuse valve 2 and cause leakage owing to being not closed completely reduce the pressure in the sealing gland pipe 6, separation gas will replenish its leakage rate automatically by valve 4, the pressure in the assurance sealing gland pipe 6.The outlet end of valve 4 is provided with pressure gauge 7, certainly on pressure gauge 7 also can be arranged on the outlet end of valve 4 is communicated with the source of the gas pipe 10 or sealing gland pipe 6, can judge the closed condition of sealing gland this moment by pressure gauge 7, when to such an extent as to the excessive separation gas of the leakage of valve can't replenish its leakage rate by valve 4, just should or diffuse valve 2 and change, just know inlet valve 1, outlet valve 3 or the intact situation of diffusing valve 2 by judging pressure gauge to corresponding inlet valve 1, outlet valve 3.
Claims (5)
1, the sealing gland of gas pipeline is closed the border disconnected device, comprise inlet valve (1), one end of inlet valve (1) is connected with the gas inlet end (9) of gas pipeline, it is characterized in that: the other end of inlet valve (1) is connected with an end of sealing gland pipe (6), the other end of sealing gland pipe (6) is communicated with outlet valve (3), be connected with the source of the gas pipe (10) that is communicated with it on the sealing gland pipe (6), source of the gas pipe (10) is provided with valve (4).
2, the sealing gland of gas pipeline as claimed in claim 1 is closed the border disconnected device, it is characterized in that: also be connected with exhaust stack (8) on the described sealing gland pipe (6), exhaust stack (8) is provided with and diffuses valve (2).
3, the sealing gland of gas pipeline as claimed in claim 1 or 2 is closed the border disconnected device, it is characterized in that: described valve (4) is a pressure regulator valve.
4, the sealing gland of gas pipeline as claimed in claim 3 is closed the border disconnected device, it is characterized in that: described valve (4) is provided with pressure signal pipe (5), and the input end of pressure signal pipe (5) is communicated with gas inlet end (9).
5, the sealing gland of gas pipeline as claimed in claim 1 is closed the border disconnected device, it is characterized in that: the outlet end of described valve (4) is provided with pressure gauge (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234185 CN2679460Y (en) | 2003-04-29 | 2003-04-29 | Gas seal shut-off device for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234185 CN2679460Y (en) | 2003-04-29 | 2003-04-29 | Gas seal shut-off device for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2679460Y true CN2679460Y (en) | 2005-02-16 |
Family
ID=34580317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03234185 Expired - Fee Related CN2679460Y (en) | 2003-04-29 | 2003-04-29 | Gas seal shut-off device for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2679460Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359622A (en) * | 2011-10-31 | 2012-02-22 | 浙江超达阀门股份有限公司 | Fluid seal combined cut-off valve |
| CN104913086A (en) * | 2015-06-08 | 2015-09-16 | 洛阳明远石化技术有限公司 | Flue gas pipeline system and gas seal valve |
| CN105179723A (en) * | 2015-06-15 | 2015-12-23 | 秦皇岛中青冶金阀门有限公司 | Air seal double-gate-disc brake valve |
| CN107061992A (en) * | 2017-06-21 | 2017-08-18 | 重庆科技学院 | One kind smelts gas input cut-out protector |
| CN108204524A (en) * | 2016-12-20 | 2018-06-26 | 上海船厂船舶有限公司 | Fuel gas pipeline and its method for maintaining |
| CN116067192A (en) * | 2023-04-04 | 2023-05-05 | 唐山精研实业有限责任公司 | Intelligent heavy hammer type furnace wall thickness cleaner |
-
2003
- 2003-04-29 CN CN 03234185 patent/CN2679460Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359622A (en) * | 2011-10-31 | 2012-02-22 | 浙江超达阀门股份有限公司 | Fluid seal combined cut-off valve |
| CN104913086A (en) * | 2015-06-08 | 2015-09-16 | 洛阳明远石化技术有限公司 | Flue gas pipeline system and gas seal valve |
| CN105179723A (en) * | 2015-06-15 | 2015-12-23 | 秦皇岛中青冶金阀门有限公司 | Air seal double-gate-disc brake valve |
| CN105179723B (en) * | 2015-06-15 | 2017-12-26 | 秦皇岛中青冶金阀门有限公司 | A kind of sealing gland double-flashboard gate valve |
| CN108204524A (en) * | 2016-12-20 | 2018-06-26 | 上海船厂船舶有限公司 | Fuel gas pipeline and its method for maintaining |
| CN107061992A (en) * | 2017-06-21 | 2017-08-18 | 重庆科技学院 | One kind smelts gas input cut-out protector |
| CN116067192A (en) * | 2023-04-04 | 2023-05-05 | 唐山精研实业有限责任公司 | Intelligent heavy hammer type furnace wall thickness cleaner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205226513U (en) | Throttle formula gas safety self -closing valve | |
| CN2679460Y (en) | Gas seal shut-off device for gas pipeline | |
| CN106885022B (en) | Well head safety promptly cuts device | |
| CN101509605B (en) | Method for recovering relief gas in process for examining and repairing gas pipe network and device thereof | |
| US3707157A (en) | Natural gas saver with separator and compressor | |
| CN108571617A (en) | Steam valve open and close control system and method, tobacco processing equipment | |
| CN203718382U (en) | Safe diffusing system of fuel gas pipeline | |
| CN216715372U (en) | Pneumatic ball valve cuts off fast | |
| CN114017209B (en) | Purging method for fuel gas in fuel gas pipeline of marine dual-fuel host | |
| CN215048629U (en) | Online oil recovery system | |
| CN208090318U (en) | A kind of full-automatic special liquid supply cabinet | |
| RU2541487C2 (en) | Operation of fuel feed system for heat engine | |
| CN114768129A (en) | Fire emergency device and gas usage amount determining method thereof | |
| CN210511034U (en) | CNG gas storage well CNG recovery system | |
| CN103898260B (en) | A kind of coal gas automatic bleeding device with voltage stabilizing function | |
| CN101403458A (en) | Gas pipeline leakage can repairing method | |
| CN220132259U (en) | Steelmaking converter gas recovery device | |
| CN207050487U (en) | A kind of tube furnace entrance coal gas fast cut valve protection device | |
| CN201059355Y (en) | Pneumatic emptying valve | |
| CN220685182U (en) | Effective isolation device of pressure maintaining steam system of blast furnace and high-pressure gas system of furnace top | |
| CN203231089U (en) | Device for reclaiming fuel gas released during natural gas pipeline operation with gas | |
| CN205246285U (en) | Utilize liquid nitrogen pressure boost gasification to carry out equipment that gas tightness was inspected | |
| CN113390018B (en) | Gas phase system of liquefied hydrocarbon tank | |
| CN219063103U (en) | Air source control panel | |
| CN201263959Y (en) | Automatic spraying and sprinkling device for leaky chlorine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050216 |