CN102506205B - Wet-type self-resetting fire-retarding blow off valve - Google Patents
Wet-type self-resetting fire-retarding blow off valve Download PDFInfo
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- CN102506205B CN102506205B CN 201110346798 CN201110346798A CN102506205B CN 102506205 B CN102506205 B CN 102506205B CN 201110346798 CN201110346798 CN 201110346798 CN 201110346798 A CN201110346798 A CN 201110346798A CN 102506205 B CN102506205 B CN 102506205B
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Abstract
The invention discloses a wet-type self-resetting fire-retarding blow off valve, which can be used for conveying a low-pressure combustible gas medium and safely blowing off. A water seal tank (5) is connected with a water pressure difference tank (7); an overflow water tank (8) is arranged at the outlet of the water pressure difference tank (7); when pressure of the gas medium is greater than a set value, water in the water pressure difference tank (7) overflows into the overflow water tank (8), and the water pressure difference tank (7) is communicated with the atmosphere, so that the combustible gas is blown off; heights of the water pressure difference tank (7), an isolation plate (12) and the water level in the water pressure difference tank (7) are adjusted, so that blow off pressure and working pressure can be adjusted and set conveniently; the overflow water tank (8) is connected with the water pressure difference tank (7) through a water return pipeline (9), a gate valve (10) and a check valve (11); and when the pressure of the gas medium is recovered, the water in the overflow water tank (8) flows back to the water pressure difference tank (7), and the blow off valve automatically resets and stops blowing off the gas. The wet-type self-resetting fire-retarding blow off valve has the advantages of automatically closing and resetting, conveniently adjusting the blow off pressure, precisely setting starting and stopping pressure and the like, along with low blow off pressure.
Description
Technical field
The invention belongs to valve technology field, relate to a kind of wet-type relief valve, particularly relate to a kind of for low pressure inflammable gas medium transport, the safe wet-type self-resetting fire-retarding blow off valve that diffuses, can automatically open when pressure medium is too high, diffuse safely, autoshutdown resets when pressure medium recovers normal.
Background technique
Conventional diffusion valve adopts electronic or pneumatic valve, control the unlatching of diffusion valve or close by control system, need to be equipped with pressure transducer and complicated control system, also need to consume electric energy or pressurized air, if need the back-fire relief function, also must the optional equipment flame trap.The wet-type relief valve that bursting membrane is installed at the wet type flame trap is also arranged in the prior art, bursting membrane breaks when pressure medium is too high, diffusing passage opens, realize diffusing safely, this wet-type relief valve is not needing control system and sensor, is not consuming and can realize under the prerequisite of electric energy or other energy that safety diffuses, but, still there is following shortcoming in this wet-type relief valve that belongs to prior art: can not automatically recover after one, bursting membrane breaks, must manually change after the bursting membrane diffusion valve and just can close and reset; Two, the pressure medium that breaks of bursting membrane is generally higher, is not suitable for the application under low cracking pressure; Three, the pressure medium that breaks of each bursting membrane is not necessarily identical, makes the cracking pressure of diffusion valve have very big-difference.Current diffusion valve is demanded urgently improving.
Summary of the invention
For overcoming the above-mentioned shortcoming and defect of prior art, the object of the invention is to: a kind of wet-type self-resetting fire-retarding blow off valve is provided, the advantage of keep not only that existing wet-type relief valve is simple and reliable, safety being diffused under the prerequisite that do not consume the energy, the problem such as solved also that existing wet-type relief valve can not autoshutdown resets, cracking pressure height and cracking pressure are uncertain.
The present invention is that the technological scheme that its technical problem of solution is taked is:
A kind of wet-type self-resetting fire-retarding blow off valve, comprise: admission line (2), outlet pipe (3), flashback tank (5), connecting tube (6), differential water pressures case (7) and spill box (8), described inlet, outlet pipeline (2,3) same flashback tanks (5) are communicated with, and it is characterized in that
The inside of described flashback tank (5) also is equiped with flow distribution plate (14), and described admission line (2) is positioned at the part of flashback tank (5) and passes flow distribution plate (14), and the outlet end of this part is positioned at the below of described flow distribution plate (14); The entrance point of described outlet pipe (3) is positioned at the top of described flow distribution plate (14);
Isolating plate (12) is set in the described differential water pressures case (7), differential water pressures case (7) top is divided into two cavitys;
Described flashback tank (5) is connected with differential water pressures case (7) by connecting tube (6), and differential water pressures case (7) outlet is provided with spill box (8), and described spill box (8) bottom is connected with differential water pressures case (7) by water return pipeline (9); When the inflammable gas pressure medium surpassed setting value, the water in the differential water pressures case (7) spilt into spill box (8), and differential water pressures case (7) is communicated with atmosphere, and inflammable gas diffuses to atmosphere by connecting tube (6) and differential water pressures case (7); When the inflammable gas pressure medium recovered normal again, the water in the spill box (8) flowed back to differential water pressures case (7) by water return pipeline (9), diffused valve and automatically reset and stop to diffuse.
Preferably, be provided with gate valve (10) and one-way valve (11) on the described water return pipeline (9), gate valve (10) is used for regulating circling water flow rate, and one-way valve (11) only allows water to flow back to differential water pressures case (7) by spill box (8), avoids flowing backwards.
Preferably, the height of the height of the height of described differential water pressures case (7), isolating plate (12) and the interior water level of differential water pressures case (7) is adjustable, by adjusting height, the height of isolating plate (12) and the height of the interior water level of differential water pressures case (7) of differential water pressures case (7), can regulate easily, set and diffuse pressure and working pressure.
Preferably, described wet-type self-resetting fire-retarding blow off valve also comprises the level sensor (13) that is installed on flashback tank (5) and the differential water pressures case (7), in order to remote monitoring diffusion valve working state.
Preferably, described wet-type self-resetting fire-retarding blow off valve also comprises the glass tube water level gauge (1) that is installed on the flashback tank (5), is used for field observation diffusion valve working state.
Preferably, described flashback tank (5) seals by the blank flange (4) that is located thereon section.
Preferably, described isolating plate (12) uses metallic material or nonmetallic material to make.
In actual applications, when the pipe-line system flow reduces suddenly, (reduce suddenly the start number of units or reduce suddenly load such as the downstream device), for safe operation and the whole pipeline transport system that guarantees upstream equipment is operated in the pressure range of setting, can wet-type self-resetting fire-retarding blow off valve of the present invention be set at the gas transmission main pipe of transporting system.When the transporting system pipeline pressure increased, the water in the differential water pressures case (7) overflowed, and diffusion valve is opened, and inflammable gas is just later on emptying by the water of flashback tank (5).It is aerial that inflammable gas emptying diffused by water, so this diffusion valve can be with inflammable gas isolation in the issuable burning things which may cause a fire disaster in outside and the pipe-line system, realizes that safety diffuses.Can realize the computer remote monitoring by level sensor.
Innovative point of the present invention is: differential water pressures case (7) and isolating plate (12) one, are set, by adjusting height, the height of isolating plate (12) and the height of the interior water level of differential water pressures case (7) of differential water pressures case (7), can regulate easily, set and diffuse pressure and working pressure.Two, spill box (8), water return pipeline (9), gate valve (10) and one-way valve (11) are set; Water when pressure medium is too high in the differential water pressures case (7) spills into spill box (8); When manifold pressure recovered normal range (NR), the water in the spill box (8) flowed back to differential water pressures case (7) by water return pipeline (9), gate valve (10) and one-way valve (11), diffused valve and automatically reset and stop to diffuse.
Compare with traditional bleeding device, the invention has the advantages that:
1. the diffusion valve autoshutdown resetted when pressure medium recovered;
2. it is easy to adjust to diffuse pressure, and valve opening, closing pressure are set accurately;
3. the diffusion valve cracking pressure is low, and the safety that is specially adapted to low pressure inflammable gas conveyance conduit is diffused;
4. without final controlling element and other power equipment, simple in structure, maintenance, easy to maintenance.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the systematic schematic diagram of the embodiment of the invention.
Wherein, glass tube water level gauge 1, admission line 2, outlet pipe 3, blank flange 4, flashback tank 5, connecting tube 6, differential water pressures case 7, spill box 8, water return pipeline 9, gate valve 10, one-way valve 11, isolating plate 12, level sensor 13, flow distribution plate 14.
Embodiment
Fig. 1 is one embodiment of the present invention, and inflammable gas enters flashback tank 5 by admission line 2 and metal flow distribution plate 14, and when the inflammable gas pressure medium was normal, by water seal, inflammable gas flowed to downstream line by outlet pipe 3 in the differential water pressures case 7.Flashback tank 5 is connected with differential water pressures case 7 by connecting tube 6, and 7 outlets of differential water pressures case are provided with spill box 8.When the inflammable gas pressure medium surpassed setting value, the water in the differential water pressures case 7 spilt into spill box 8, and differential water pressures case 7 is communicated with atmosphere, and inflammable gas diffuses to atmosphere by connecting tube 6 and differential water pressures case 7.The differential water pressures case 7 interior isolating plates 12 that arrange are divided into two cavitys with differential water pressures case 7 tops; By adjusting height, the height of isolating plate 12 and the height of differential water pressures case 7 interior water levels of differential water pressures case 7, can regulate easily, set and diffuse pressure and working pressure.Are connected with one-way valve by water return pipeline 9, gate valve 10 and are connected with differential water pressures case 7 in spill box 8 bottoms.When the inflammable gas pressure medium recovered normal again, the water in the spill box 8 flowed back to differential water pressures case 7 by water return pipeline 9, gate valve 10 and one-way valve 11, diffused valve and automatically reset and stop to diffuse.Gate valve 10 is used for regulating circling water flow rate; 11 on one-way valve allows water to flow back to differential water pressures case 7 by spill box 8, avoids flowing backwards.Level sensor 13 is used for control system remote monitoring diffusion valve working state.Glass tube water level gauge 1 is used for field observation diffusion valve working state.
Claims (6)
1. wet-type self-resetting fire-retarding blow off valve, comprise: admission line (2), outlet pipe (3), flashback tank (5), connecting tube (6), differential water pressures case (7) and spill box (8), described inlet, outlet pipeline (2,3) same flashback tanks (5) are communicated with, and it is characterized in that
The inside of described flashback tank (5) also is equiped with flow distribution plate (14), and described admission line (2) is positioned at the inner part of flashback tank (5) and passes flow distribution plate (14), and the outlet end of this part is positioned at the below of flow distribution plate (14); The inlet end of described outlet pipe (3) is positioned at the top of flow distribution plate (14);
Height-adjustable isolating plate (12) is set in the described differential water pressures case (7), and described isolating plate (12) is divided into two cavitys with the top of differential water pressures case (7);
Described flashback tank (5) is connected with differential water pressures case (7) by connecting tube (6), differential water pressures case (7) outlet is provided with spill box (8), described spill box (8) bottom is connected with differential water pressures case (7) by water return pipeline (9): when the inflammable gas pressure medium surpasses setting value, water in the differential water pressures case (7) spills into spill box (8), differential water pressures case (7) is communicated with atmosphere, and inflammable gas diffuses to atmosphere by connecting tube (6) and differential water pressures case (7); When the inflammable gas pressure medium recovered normal again, the water in the spill box (8) flowed back to differential water pressures case (7) by water return pipeline (9), and diffusion valve automatically resets and stops to diffuse;
Be provided with gate valve (10) and one-way valve (11) on the described water return pipeline (9), gate valve (10) is used for regulating circling water flow rate, and one-way valve (11) only allows water to flow back to differential water pressures case (7) by spill box (8).
2. wet-type self-resetting fire-retarding blow off valve according to claim 1, it is characterized in that: the height of the height of the height of described differential water pressures case (7), isolating plate (12) and the interior water level of differential water pressures case (7) is adjustable.
3. wet-type self-resetting fire-retarding blow off valve according to claim 1 and 2, it is characterized in that: described diffusion valve also comprises the level sensor (13) that is installed on flashback tank (5) and the differential water pressures case (7), in order to remote monitoring diffusion valve working state.
4. wet-type self-resetting fire-retarding blow off valve according to claim 1 and 2, it is characterized in that: described wet-type self-resetting fire-retarding blow off valve also comprises the glass tube water level gauge (1) that is installed on the flashback tank (5), is used for field observation diffusion valve working state.
5. wet-type self-resetting fire-retarding blow off valve according to claim 1 and 2, it is characterized in that: described flashback tank (5) seals by the blank flange (4) that is located thereon section.
6. wet-type self-resetting fire-retarding blow off valve according to claim 1 and 2 is characterized in that: described isolating plate (12) uses metallic material or nonmetallic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110346798 CN102506205B (en) | 2011-11-04 | 2011-11-04 | Wet-type self-resetting fire-retarding blow off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110346798 CN102506205B (en) | 2011-11-04 | 2011-11-04 | Wet-type self-resetting fire-retarding blow off valve |
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| Publication Number | Publication Date |
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| CN102506205A CN102506205A (en) | 2012-06-20 |
| CN102506205B true CN102506205B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110346798 Active CN102506205B (en) | 2011-11-04 | 2011-11-04 | Wet-type self-resetting fire-retarding blow off valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107091348A (en) * | 2017-05-05 | 2017-08-25 | 北京首都机场动力能源有限公司 | A kind of fluid-tight Safety relief valve |
| CN112050200B (en) * | 2020-08-13 | 2023-03-31 | 新兴铸管股份有限公司 | Anti-knock coal injection heating furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4936089A (en) * | 1987-12-18 | 1990-06-26 | Kawasaki Steel Corporation | Gas turbine plant system and gas pressure stabilizer thereof in emergency |
| CN200989482Y (en) * | 2006-12-19 | 2007-12-12 | 胜利油田胜利动力机械有限公司 | Wet gas diffusing valve |
| CN201934729U (en) * | 2011-03-10 | 2011-08-17 | 季建威 | Gas check water seal valve |
| CN202302119U (en) * | 2011-11-04 | 2012-07-04 | 中国科学院工程热物理研究所 | Wet-type relief valve |
-
2011
- 2011-11-04 CN CN 201110346798 patent/CN102506205B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4936089A (en) * | 1987-12-18 | 1990-06-26 | Kawasaki Steel Corporation | Gas turbine plant system and gas pressure stabilizer thereof in emergency |
| CN200989482Y (en) * | 2006-12-19 | 2007-12-12 | 胜利油田胜利动力机械有限公司 | Wet gas diffusing valve |
| CN201934729U (en) * | 2011-03-10 | 2011-08-17 | 季建威 | Gas check water seal valve |
| CN202302119U (en) * | 2011-11-04 | 2012-07-04 | 中国科学院工程热物理研究所 | Wet-type relief valve |
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| CN102506205A (en) | 2012-06-20 |
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