CN201190815Y - Floating type water sealing check valve - Google Patents
Floating type water sealing check valve Download PDFInfo
- Publication number
- CN201190815Y CN201190815Y CNU2007201575815U CN200720157581U CN201190815Y CN 201190815 Y CN201190815 Y CN 201190815Y CN U2007201575815 U CNU2007201575815 U CN U2007201575815U CN 200720157581 U CN200720157581 U CN 200720157581U CN 201190815 Y CN201190815 Y CN 201190815Y
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- CN
- China
- Prior art keywords
- water seal
- gas
- check valve
- type water
- hand hole
- 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
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Abstract
A float type water seal check valve belongs to the coal-firing gasifying and environment protection technical field, which comprises a gas inlet 1, an empty box 2, a bell cover 3, a hand hole 4, a gas outlet, an overflow port 6 and a drum 7, wherein the gas inlet 1 is arranged under the hand hole 4, which are connected by the drum 7, the gas outlet 5 is arranged on the upper part of the water seal, whose one end is connected with the drum 7 via the hand hole 4 and the another end is connected with the drum 7 via the overflow port 6, the empty box 2 and the bell cover 3 are arranged in the water seal, and the empty box 2 is fixed outside the bell cover 3. The float type water seal check valve can improve safety.
Description
Technical field
The utility model belongs to coal-fired gasification and corresponding field of environment protection
Background technique
The water seal of using before and after the gas station gas holder does not all have the non-return effect usually, only plays the effect of cut-out.Once it is too high moment water seal outlet pressure to occur, when it's the end is past inlet pressure, when common water seal can not in time be cut off, cause coal gas to reflux and will cause leakage or blast, abnormally dangerous.Utilize floating drum deadweight and coal measures system pressure, when occurring that moment, outlet pressure was too high, floating drum falls, and the bottom has water seal to seal floating drum can play the non-return effect.
The preceding water seal of common gas holder that Fig. 1 uses for gas station, be to constitute by sewage draining exit 1 hand hole 2 flow-off 3 filler, 4 gas inlets 5 cylindrical shells 6 dividing plates 7 gas exits 8 hand holes 9 sewage draining exits 10 grades, there is not water in the water seal during normal the operation, have only when needing to cut off coal gas, just water level is added to the position of flow-off, be the pressure of water seal height greater than coal gas, coal gas can cut off.When operation, the coal gas backflow phenomenon occurring, must cut off immediately.But common water seal cut-off velocity is slower, and is manual operation, so abnormally dangerous.
Improved purpose:
Solve the system of gas station because negative pressure appearance appears in coal gas, avoided causing backflow.Improved the whole security of system of gas station.
Summary of the invention
Goal of the invention: be to have solved the system of gas station, avoid causing backflow, improved the whole security of system of gas station because negative pressure appearance appears in coal gas.
Technological scheme:
Fig. 2 is to be made of gas inlet 1 sylphon 2 bell jars 3 hand holes 4 gas exits 5 flow-offs 6 cylindrical shells 7 grades for the water seal after improving; Gas inlet 1 is positioned at hand hole 4 belows, is connected by cylindrical shell 7, and gas exit 5 is positioned at water seal top, one end is connected by cylindrical shell 7 with hand hole 4, the other end is connected by cylindrical shell 7 with flow-off 6, and sylphon 2 and bell jar 3 are positioned at water seal inside, and sylphon 2 is fixed on bell jar 3 outsides.Also be full water level in the water seal when normal operation, during the normal flow direction of coal gas (bell jar shown in Fig. 2 rises state), bell jar 3 is to utilize the pressure jack-up of coal gas; Increase hollow square box 2, reduced the resistance when bell jar 3 rises; When backflow phenomenon appears in coal gas (bell jar 3 closed conditions shown in Fig. 2), bell jar 3 utilizes the gravity of self and exports the gas pressure that is higher than import bell jar 3 is fallen immediately, cause has water level to keep, and has certain height (water seal height is greater than the gas pressure that refluxes) at this moment promptly to play the non-return effect; Improved Security.
Beneficial effect:
According to embodiment structure shown in Figure 2, water seal can be cut off immediately when the coal gas backflow phenomenon occurring, prevents that coal gas from flowing backwards, the Security that has improved whole gas station, and ordinary production has obtained guarantee.
Description of drawings
Fig. 1 is the structural representation of water seal before the common gas holder of gas station
Fig. 2 is the structural representation that the utility model is implemented
Embodiment
Also be full water level in the water seal when normal operation, during the coal gas normal flow direction (bell jar shown in Fig. 2 rises state), bell jar 3 is to utilize the pressure jack-up of coal gas; Increase hollow square box 2, reduced the resistance when bell jar 3 rises; When backflow phenomenon appears in coal gas (bell jar 3 closed conditions shown in Fig. 2), bell jar 3 utilizes the gravity of self and exports the gas pressure that is higher than import bell jar 3 is fallen immediately, cause has water level to keep, and has certain height (water seal height is greater than the gas pressure that refluxes) at this moment promptly to play the non-return effect; Improved Security.
Claims (1)
1, a kind of floating-tube type water seal safety check is by gas inlet (1) sylphon (2) bell jar (3) hand hole (4) gas exit (5) flow-off (6) cylindrical shell formations such as (7); It is characterized in that gas inlet (1) is positioned at hand hole (4) below, be connected by cylindrical shell (7), gas exit (5) is positioned at water seal top, one end is connected by cylindrical shell (7) with hand hole (4), the other end is connected by cylindrical shell (7) with flow-off (6), sylphon (2) and bell jar (3) are positioned at water seal inside, and sylphon (2) is fixed on bell jar (3) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201575815U CN201190815Y (en) | 2007-12-05 | 2007-12-05 | Floating type water sealing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201575815U CN201190815Y (en) | 2007-12-05 | 2007-12-05 | Floating type water sealing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190815Y true CN201190815Y (en) | 2009-02-04 |
Family
ID=40334977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201575815U Expired - Fee Related CN201190815Y (en) | 2007-12-05 | 2007-12-05 | Floating type water sealing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190815Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527821A (en) * | 2013-11-04 | 2014-01-22 | 叶安生 | Water-sealed gas isolation device |
| CN103672046A (en) * | 2012-09-03 | 2014-03-26 | 洛阳瑞昌石油化工设备有限公司 | Rotary type low-pressure drop water sealed tank |
-
2007
- 2007-12-05 CN CNU2007201575815U patent/CN201190815Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672046A (en) * | 2012-09-03 | 2014-03-26 | 洛阳瑞昌石油化工设备有限公司 | Rotary type low-pressure drop water sealed tank |
| CN103672046B (en) * | 2012-09-03 | 2016-05-04 | 洛阳瑞昌石油化工设备有限公司 | A kind of swinging low pressure drop water sealed tank |
| CN103527821A (en) * | 2013-11-04 | 2014-01-22 | 叶安生 | Water-sealed gas isolation device |
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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: 20090204 Termination date: 20100105 |