CN102563201A - Device for eliminating leakage risk of gas gate valve online - Google Patents
Device for eliminating leakage risk of gas gate valve online Download PDFInfo
- Publication number
- CN102563201A CN102563201A CN2012100334126A CN201210033412A CN102563201A CN 102563201 A CN102563201 A CN 102563201A CN 2012100334126 A CN2012100334126 A CN 2012100334126A CN 201210033412 A CN201210033412 A CN 201210033412A CN 102563201 A CN102563201 A CN 102563201A
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- CN
- China
- Prior art keywords
- valve
- gas
- valves
- pressure
- gate valve
- 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.)
- Granted
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims abstract description 49
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101710089042 Demethyl-4-deoxygadusol synthase Proteins 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a device for eliminating leakage risk of a gas gate valve online. A nitrogen pipeline is connected on a pressure test port of the gas gate valve, and a three-valve group and a pressure gage are arranged on the nitrogen pipeline. The three-valve group consists of three valves, wherein the first valve is connected with the third valve in series; the second valve is connected between the first valve and the third valve through a three-way pipe; an inlet of the first valve is connected with the nitrogen pipeline; an outlet of the first valve is connected with the inlets of the second valve and the third valve; the outlet of the second valve is connected with the outside; the outlet of the third valve is connected with the pressure test port of the gas gate valve; and the pressure gage is connected between the first valve and the third valve through the three-way pipe. The invention has the beneficial effects that the device has simple structure, is convenient to use and is safe and reliable and as the pressure of the nitrogen is 0.2 Mpa, the device is 8000pa to 12000pa higher than gas pressure and is higher than the atmospheric pressure. If nitrogen is leaked to the direction of an opened device by a city gas fast opening-closing gate valve, employees cannot be harmed, and if the nitrogen is leaked to the direction where the gas comes by the city gas fast opening-closing gate valve, the gas cannot be damaged too much.
Description
Technical field
The invention belongs to the chemical industry equipment field, relate to a kind of device of online elimination gas gate valve leakage hazard.
Background technique
The MZ series " town gas fast opening and closing gate valve " that Yangquan Valves Co., Ltd. produces is the town gas special valve of developing with unit consolidation such as Shanghai Gas Company; Be to fill up the blank new product of country; Be the scientific and technological achievement that State Scientific and Technological Commission and former national Machinery Ministry are promoted to the whole nation, its technical performance is on the leading domestic level.
This series of valves is applicable to: various dirty coal gas such as blast furnace gas, coke-stove gas, producer gas, water gas, oil gas reach clean gas such as liquid gas, rock gas, damp gas.Be mainly used on the system gas and town gas transmission and distribution network of industries such as coal gas, metallurgy, coking.The national market occupancy is more than 80%.
What but this product was carried out is the GB13027-92 standard, and gas allows leakage rate 30 * Dn mm3/s, and leakage rate is very important concerning big caliber valve, can carcinogenic or poisoning because of containing benzene, benzene DDGS, BaP and hydrogen sulfide etc. in the coal gas.The equipment that links to each other with this valve is online when uncapping oil removing or maintenance, can cause personal injury to the worker.
Summary of the invention
The present invention is in order to remedy the deficiency of existing technology, and a kind of device of online elimination gas gate valve leakage hazard simple in structure, esy to use, safe and reliable is provided.
The present invention realizes through following technological scheme:
The device of online elimination gas gate valve leakage hazard of the present invention, its special way is: the pressure testing mouth at gas gate valve connects nitrogen pipeline, and three valve group and pressure gauges are installed on the nitrogen pipeline; The valve group that three valve groups are made up of three valves; Wherein a valve is connected with three valves, and two valves are connected between a valve and three valves through three-way pipe, and a valve inlet connects nitrogen pipeline; One valve outlet port connects the inlet of two valves and three valves; Two valve outlet ports connect extraneous, and three valve outlet ports connect gas gate valve pressure testing mouth, and pressure gauge is connected between a valve and three valves through three-way pipe.
The invention has the beneficial effects as follows; Simple in structure, esy to use, safe and reliable; Because of nitrogen pressure 0.2 Mpa, be higher than gas pressure 8000pa-12000pa and barometric pressure, if leaking nitrogen to the device orientation of uncapping, the town gas fast opening and closing gate valve can not damage the worker; If town gas fast opening and closing gate valve always coal gas direction leaks nitrogen and also can not cause much harm to coal gas, because of short leakage rate of time limited.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1 one valves, 2 two valves, 3 three valves, 4 pressure gauges, 5 pressure testing mouths, 6 gas gate valves, 7 coke-stove gas imports, the outlet of 8 coke-stove gas, 9 double-flashboards, 10 nitrogen pipelines.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
The device of online elimination gas gate valve leakage hazard of the present invention at the pressure testing mouth 5 connection nitrogen pipelines 10 of gas gate valve 6, is installed three valve groups and pressure gauge 4 on the nitrogen pipeline; The valve group that three valve groups are made up of three valves; Wherein a valve 1 is connected with three valves 3, and two valves 2 are connected between a valve and three valves through three-way pipe, and a valve 1 inlet connects nitrogen pipeline 10; One valve outlet port connects the inlet of two valves 2 and three valves 3; 2 outlets of two valves connect extraneous, and 3 outlets of three valves connect the pressure testing mouth 5 of gas gate valve 6, and pressure gauge 4 is connected between a valve and three valves through three-way pipe.
Gas pressure is 8000pa-12000pa generally speaking; Factory's nitrogen pressure generally is 0.7Mpa; The flashboard of MZ series town gas fast opening and closing gate valve and the sealing between valve body are double-flashboard 9 sealings (one of them flashboard control coke-stove gas imports 7; Another flashboard control coke-stove gas outlet 8); During the valve leak test gas is imported from the pressure testing mouth between two flashboards 5, detected the both sides sealing part and whether leak gas.
Pressure testing mouth at gate valve connects three valve group and pressure gauges, and three valve groups connect factory's nitrogen pipeline again, see accompanying drawing.
Manipulate: the equipment that links to each other when this gate valve wants online take off lid and overhaul in short-term the time
A. this gas gate valve is closed;
B. slowly open a valve 1, let nitrogen through a valve 1 and two valves 2 foreign material in the pipeline blown out, two valves 2 are closed in clean back;
C. transfer a valve 1, make pressure gauge indication 0.2Mpa;
D. slowly open three valves 3;
E. if pressure descends, transfer a valve 1 again, make pressure gauge indication 0.2Mpa.
If the repair time, very long elder generation was by aforesaid operations (filling nitrogen with) between double-flashboard, with town gas fast opening and closing gate valve and the 8 word blind plates extraction of uncapping between the Awaiting Overhaul equipment, flange is held in the insertion again of touching the pillow again.At last nitrogen is shut.Awaiting Overhaul is over and will resumes production, and at first must extract 8 word blind plates out the insertion of touching the pillow again, for preventing gas leakage harm worker, and also by behind the aforesaid operations (filling nitrogen between double-flashboard with), the active 8 word blind plates of.
Claims (1)
1. the device of an online elimination gas gate valve leakage hazard is characterized in that: at the pressure testing mouth connection nitrogen pipeline of gas gate valve, three valve group and pressure gauges are installed on the nitrogen pipeline; The valve group that three valve groups are made up of three valves; Wherein a valve is connected with three valves, and two valves are connected between a valve and three valves through three-way pipe, and a valve inlet connects nitrogen pipeline; One valve outlet port connects the inlet of two valves and three valves; Two valve outlet ports connect extraneous, and three valve outlet ports connect gas gate valve pressure testing mouth, and pressure gauge is connected between a valve and three valves through three-way pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100334126A CN102563201B (en) | 2012-02-15 | 2012-02-15 | Device for eliminating leakage risk of gas gate valve online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100334126A CN102563201B (en) | 2012-02-15 | 2012-02-15 | Device for eliminating leakage risk of gas gate valve online |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102563201A true CN102563201A (en) | 2012-07-11 |
| CN102563201B CN102563201B (en) | 2013-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100334126A Active CN102563201B (en) | 2012-02-15 | 2012-02-15 | Device for eliminating leakage risk of gas gate valve online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102563201B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674055A (en) * | 2016-01-19 | 2016-06-15 | 康乃尔化学工业股份有限公司 | Nitrogen valve group used for safety protection |
| CN107687535A (en) * | 2016-11-10 | 2018-02-13 | 林之铠 | A kind of gate valve for having hydraulic pressure indicator function |
| CN112578084A (en) * | 2020-12-09 | 2021-03-30 | 贵州盘江煤电集团技术研究院有限公司 | Detection device is administered to colliery gas in pit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727508Y (en) * | 2004-08-30 | 2005-09-21 | 邢台钢铁有限责任公司 | Gas fan sealing device |
| CN2844860Y (en) * | 2005-10-11 | 2006-12-06 | 济南钢铁股份有限公司 | Online sweeping flowmeter pressure sampling tube device |
| CN2844888Y (en) * | 2005-11-04 | 2006-12-06 | 攀枝花新钢钒股份有限公司 | A kind of blast furnace gas dust sampling device |
| CN101550359A (en) * | 2008-12-30 | 2009-10-07 | 湖北宜化化工股份有限公司 | On-line valve pressurization method by steam |
| CN202469209U (en) * | 2012-02-15 | 2012-10-03 | 山东洪达化工有限公司 | Device for eliminating harm of leakage of gas gate valve on line |
-
2012
- 2012-02-15 CN CN2012100334126A patent/CN102563201B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727508Y (en) * | 2004-08-30 | 2005-09-21 | 邢台钢铁有限责任公司 | Gas fan sealing device |
| CN2844860Y (en) * | 2005-10-11 | 2006-12-06 | 济南钢铁股份有限公司 | Online sweeping flowmeter pressure sampling tube device |
| CN2844888Y (en) * | 2005-11-04 | 2006-12-06 | 攀枝花新钢钒股份有限公司 | A kind of blast furnace gas dust sampling device |
| CN101550359A (en) * | 2008-12-30 | 2009-10-07 | 湖北宜化化工股份有限公司 | On-line valve pressurization method by steam |
| CN202469209U (en) * | 2012-02-15 | 2012-10-03 | 山东洪达化工有限公司 | Device for eliminating harm of leakage of gas gate valve on line |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674055A (en) * | 2016-01-19 | 2016-06-15 | 康乃尔化学工业股份有限公司 | Nitrogen valve group used for safety protection |
| CN107687535A (en) * | 2016-11-10 | 2018-02-13 | 林之铠 | A kind of gate valve for having hydraulic pressure indicator function |
| CN112578084A (en) * | 2020-12-09 | 2021-03-30 | 贵州盘江煤电集团技术研究院有限公司 | Detection device is administered to colliery gas in pit |
| CN112578084B (en) * | 2020-12-09 | 2022-07-26 | 贵州盘江煤电集团技术研究院有限公司 | Detection device is administered to colliery gas in pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102563201B (en) | 2013-11-13 |
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Effective date of registration: 20240506 Address after: 274700 Yuncheng Chemical Industry Park, Yuncheng County, Heze City, Shandong Province Patentee after: Yuncheng Xuyang Energy Co.,Ltd. Country or region after: China Address before: 274700 Within the Coal Chemical Industrial Park in Yuncheng County, Heze City, Shandong Province Patentee before: SHANDONG HONGDA CHEMICAL Co.,Ltd. Country or region before: China |
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