CN201053575Y - Gas leakage prevention device - Google Patents
Gas leakage prevention device Download PDFInfo
- Publication number
- CN201053575Y CN201053575Y CNU2007201440061U CN200720144006U CN201053575Y CN 201053575 Y CN201053575 Y CN 201053575Y CN U2007201440061 U CNU2007201440061 U CN U2007201440061U CN 200720144006 U CN200720144006 U CN 200720144006U CN 201053575 Y CN201053575 Y CN 201053575Y
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- Prior art keywords
- pipe
- gas leakage
- water
- leakage preventing
- sealing
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Abstract
A gas leakage preventing device comprises a water sealing pipe provided with an overflow port on the upper part, wherein, a buoy closing the overflow port when the buoy is at a high position is arranged in the water sealing pipe; a core tube provided with a water outlet hole on the upper part is fixed in the buoy; the upper part of the core tube is connected with a vertical hollow guide rod opening onto the outside of the water sealing pipe; the hollow guide rod is in slide fit with the water sealing pipe; the lower opening end of the core tube is provided with a bottom valve which can be in sealing fit; the bottom valve is movably connected with an indication guide rod. The utility model is characterized in that: the gas leakage preventing device also comprises a pressure releasing device; the pressure releasing device comprises a flow releasing pipe and a valve arranged on the flow releasing pipe; one end of the flow releasing pipe is communicated with a shell cavity positioned below a sealing retainer ring. When gas feeding operation is stopped or a fault occurs, system pressure is higher than a set pressure of the gas leakage preventing device, and the bottom valve of the buoy is closed, causing that condensed water cannot be discharged; the pressure releasing device (bypass) can rapidly reduce pressure to open the bottom valve and lead the system to operate normally. The utility model is mainly used for metallurgical systems, chemical systems and civil gas systems.
Description
Technical field
The utility model relates to a kind of gas leakage preventing device, and particularly, the utility model relates to employed gas leakage preventing device in a kind of gas pipe line.
Background technique
As the using energy source of Iron And Steel Plant, mostly be to reclaim through handling by the waste gas (coal gas) that metallurgy high furnace, converter and coke oven produce, uses such as being used further to the steel rolling heating by line transportation acts as a fuel.Coal gas through reclaiming need effectively be got rid of by the row of conduits hydrophone at condensed water and impurity that pipe conveying procedure produces, and is safe in utilization to guarantee the user's.
At this moment, usually be provided with water sealing (sealing water) pipe on this hydathode, the water sealing (sealing water) pipe upper end is connected with a waste pipe, height difference between its vertical intubate lower end mouth and the water sealing (sealing water) pipe outlet constitutes the water seal effective height, according to the design of the gas pressure in gas pipe line water seal effective height, water filling in the hydathode can prevent that coal gas from releasing via hydathode, but the water of condensation in the gas pipe line is discharged through hydathode.
For example the patent No. is that the Chinese utility model patent of " 01239576.5 " discloses a kind of gas pipeline drainer gas leakage preventing device.It includes the water sealing (sealing water) pipe of hydathode and the waste pipe of water sealing (sealing water) pipe outlet, settles a floating drum in the water sealing (sealing water) pipe, and there is a core tube at the floating drum center, and there is osculum communicated drainage pipe the upper end of core tube, and there is the hinge type valve plate core tube bottom surface.And for example the patent No. discloses a kind of automatic gas leakage preventing device that is applied in the gas conveying tube road for the Chinese invention patent of " 200610039622.0 ".This device comprises that top has the water sealing (sealing water) pipe of flow-off, the floating drum of closing flow-off when being in a high position is housed in the described water sealing (sealing water) pipe, be fixed with the core tube that top has osculum in the described floating drum, the top of described core tube is connected to the vertical hollow guide rod outside water sealing (sealing water) pipe, described hollow guide rod becomes to be slidingly matched with water sealing (sealing water) pipe, the lower open end of described core tube is equipped with horizontal valve plate, and described valve plate is fixedlyed connected with vertical valve rod, and described valve rod and hollow guide rod constitute sliding pair.And for example number of patent application for " 200520039614.7 " and Chinese utility model patent relate to a kind of connecting rod presser type gas leakage preventing device, comprise cylindrical shell, cylindrical shell is contained in coal gas drainer drain opening place, it is characterized in that special-shaped back-up ring is equipped with at the middle part in the cylindrical shell, divider is equipped with in the back-up ring bottom, divider and cylindrical shell have an angle, the nearly cylindrical shell end of divider has pin shaft hole, shed stick one end also has pin shaft hole, shed stick is connected on the divider through bearing pin and also can rotates around bearing pin, the universal joint parts are equipped with on pressing plate composite members top, the universal joint parts are connected with connecting rod, pressing plate composite members bottom and shed stick are affixed, and connecting rod top is passed the cylindrical shell top cover and stretched out outside the cylindrical shell, and special-shaped back-up ring matches with the pressing plate composite members.Adopt antirust durable material to make.
Yet as shown in Figure 1, the basic structure of above-mentioned gas pipeline drainer gas leakage preventing device is as follows.The condensed water that coal gas produces in the gas pipe line 1 relies on waste pipe 2 to be discharged in the draining hermetically sealed can 3, discharges through gas leakage preventing device A again, and 4 is water replenishing device.The gas leakage preventing device A that uses as shown in Figure 2, comprises housing 11 at present, and it is a cavity body structure, and there is a water intake 12 lower end, and sidewall has a water outlet 13, and water intake 12 connects the water intake of hydathode; The below of nearly drain opening 13 is provided with the Sealing shield ring 14 that is fixed in cavity inner wall in the cavity.One floating drum 15 is housed in the housing 11, in this floating drum 15 cavity is arranged, cavity top and periphery have drain opening, and the bottom is provided with a water intake, and the Sealing shield ring in this floating drum upper end portion and the shell cavity is sealed and matched.One hollow guide rod 16 1 ends are fixed on the floating drum 15 by upper end cap insertion housing 11 cavitys of housing 11, one indication guide rod 17 is inserted in the hollow guide rod 16, an indication ball 18 is equipped with at its top, indication guide rod 17 lower ends connect a bottom valve 19, this bottom valve 19 matches with the water intake of floating drum 15 bottoms, and bottom valve 19 1 ends are movably connected on floating drum 15.
Gas condensed water enters the water intake 12 of gas leakage preventing device A by draining hermetically sealed can 3, because buoyancy function holds up floating drum 15, the top of floating drum 15 by means of Sealing shield ring 14 from motive sealing, the cavity water-filling of floating drum 15, bottom valve 19 hangs under action of gravity naturally at several angle, condensed water through the cavity top of floating drum 15, the drain opening of periphery and the drain opening 13 of housing discharge, during normal drainage works, indication ball 18 is motionless in position.
The shortcoming of this device is: when stopping gas delivery operation or fault state, because system pressure is higher than the working pressure that the gas leakage device is set, pressure reduction increases, and makes bottom valve 19 close the water intake of floating drum 15.After draining hermetically sealed can 3 recovered normally, the bottom valve 19 of the floating drum 15 of this device can not automatically reset, and causes condensed water to discharge, and makes the moisture increase of coal gas system, and the system that influences normally moves.
During the working pressure that sets greater than gas leakage preventing device for resolution system pressure of the present utility model, the problem that the gas antileaking device can't proper functioning provides a kind of improved gas leakage preventing device.
The model utility content
The utility model provides a kind of improved gas leakage preventing device.
To achieve these goals, the technological scheme of gas leakage preventing device of the present utility model is as follows:
A kind of gas leakage preventing device, this device comprises that top has the water sealing (sealing water) pipe of flow-off, the floating drum of closing flow-off when being in a high position is housed in the described water sealing (sealing water) pipe, be fixed with the core tube that top has osculum in the described floating drum, the top of described core tube is connected to the vertical hollow guide rod outside water sealing (sealing water) pipe, described hollow guide rod becomes to be slidingly matched with water sealing (sealing water) pipe, the lower open end of described core tube is equipped with the bottom valve of a salable cooperation, described bottom valve flexibly connects with the indication guide rod, it is characterized in that, described gas leakage preventing device also comprises a pressure relief device, this pressure relief device comprises a leak-off pipe and valve mounted thereto, described leak-off pipe one end and the housing cavity UNICOM that is positioned at the Sealing shield ring below.
According to gas leakage preventing device of the present utility model, can fast the cavity pressure under the Sealing shield ring be reduced to the working pressure of setting.
Preferably, according to gas leakage preventing device of the present utility model, the working pressure that described device is set is the weight sum of described floating drum, indication guide rod and described bottom valve.
Preferably, according to gas leakage preventing device of the present utility model, described pressure relief device is the bypass type pipeline of UNICOM housing seal back-up ring housing cavity up and down.
Preferably, according to gas leakage preventing device of the present utility model, described pressure relief device is one to have the water pipe of switch.
Preferably, according to gas leakage preventing device of the present utility model, described bottom valve is that hinge type is connected with floating drum and with the flexible connection of indicating guide rod.
Use gas leakage preventing device of the present utility model, coal gas can effectively be got rid of the condensed water of pipeline under normal operation, in case because of gas pressure fluctuation causes the draining hermetically sealed can to puncture again can rapid and reliable cut-out coal gas, guarantee the safety of the person and equipment.When stopping gas delivery operation or fault state, because system pressure is higher than the setting pressure of gas leakage device, pressure reduction increases, the bottom valve of the keg float of this device can not automatically reset, cause condensed water to discharge, make the moisture increase of coal gas system, the system that influences normally moves.By opening this quick pressure releasing device (bypass), can make pressure reduction reduce to scope of design rapidly, lean on the gravity of described floating drum, indication guide rod and described bottom valve to automatically restore to fully open position, make system's proper functioning.Gas leakage preventing device of the present utility model is mainly used in metallurgical system, chemical system, domestic gas system.But the gas fittings that also has coal gas water seal, draining seal arrangement applicable to all.
Description of drawings
Fig. 1 is the scheme of installation of existing gas leakage preventing device;
Fig. 2 is the structural representation of the gas leakage preventing device of prior art;
Fig. 3 is the structural representation of gas leakage preventing device of the present utility model;
Embodiment
Below in conjunction with the drawings and specific embodiments, gas leakage preventing device of the present utility model is further described.
As shown in Figure 2, the structure of gas leakage preventing device of the present utility model and the described gas leakage preventing device of Fig. 1 is basic identical, its improvements are, one leak-off pipe 30 is set on the housing above the Sealing shield ring 14 11, the other end of leak-off pipe 30 is connected housing 11 places of the nearly water intake 12 in Sealing shield ring 14 belows, and leak-off pipe 30 is installed a valve 32 its on off states of control.
When drainage works normally carried out, valve 32 was in closed condition.When stopping gas delivery operation or fault state, because system pressure is higher than the working pressure that the gas leakage device is set, pressure reduction increases, and when pressure during greater than the weight of described floating drum, indication guide rod and described bottom valve, makes bottom valve 19 close the water intake of floating drum 15.
After draining hermetically sealed can 3 recovers normally, the bottom valve 19 of the floating drum 15 of this device can not automatically reset, cause condensed water to discharge, make the moisture increase of coal gas system, the system that influences normally moves, open valve 32, make pressure reduction reduce to scope of design rapidly, lean on the gravity of the bottom valve of keg float to automatically restore to fully open position, make system's proper functioning, after the indication ball recovers to lead the working position, throttle down 32.
, but should be understood that under the situation that does not break away from relevant protection domain defined by the claims that those skilled in the art can make change and/or revise according to embodiment of the present utility model describing the present invention property and nonrestrictive description.
Claims (7)
1. gas leakage preventing device, this device comprises that top has the water sealing (sealing water) pipe of flow-off, the floating drum of closing flow-off when being in a high position is housed in the described water sealing (sealing water) pipe, be fixed with the core tube that top has osculum in the described floating drum, the top of described core tube is connected to the vertical hollow guide rod outside water sealing (sealing water) pipe, described hollow guide rod becomes to be slidingly matched with water sealing (sealing water) pipe, the lower open end of described core tube is equipped with the bottom valve of a salable cooperation, described bottom valve flexibly connects with the indication guide rod, it is characterized in that, described gas leakage preventing device also comprises a pressure relief device, this pressure relief device comprises a leak-off pipe and valve mounted thereto, described leak-off pipe one end and the housing cavity UNICOM that is positioned at the Sealing shield ring below.
2. gas leakage preventing device according to claim 1, the working pressure that described device is set are the weight sum of described floating drum, indication guide rod and described bottom valve.
3. gas leakage preventing device according to claim 1 and 2, described pressure relief device are the bypass type pipeline of UNICOM housing seal back-up ring housing cavity up and down.
4. gas leakage preventing device according to claim 3, described pressure relief device are one to have the water pipe of switch.
5. gas leakage preventing device according to claim 1 and 2, described bottom valve is that hinge type is connected with floating drum and with the flexible connection of indicating guide rod.
6. gas leakage preventing device according to claim 3, described bottom valve is that hinge type is connected with floating drum and with the flexible connection of indicating guide rod.
7. gas leakage preventing device according to claim 4, described bottom valve is that hinge type is connected with floating drum and with the flexible connection of indicating guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201440061U CN201053575Y (en) | 2007-05-18 | 2007-05-18 | Gas leakage prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201440061U CN201053575Y (en) | 2007-05-18 | 2007-05-18 | Gas leakage prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053575Y true CN201053575Y (en) | 2008-04-30 |
Family
ID=39393238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201440061U Expired - Fee Related CN201053575Y (en) | 2007-05-18 | 2007-05-18 | Gas leakage prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201053575Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190115A (en) * | 2017-06-06 | 2017-09-22 | 崔景刚 | One kind reclaims valve group, gas recovery system and method |
| CN113217745A (en) * | 2021-06-07 | 2021-08-06 | 唐山市丰南区高氏工业气体有限公司 | Natural gas safety diffusing device |
| CN114459706A (en) * | 2022-02-09 | 2022-05-10 | 武汉鼎业环保工程技术有限公司 | Adjustable gas leakage prevention device |
-
2007
- 2007-05-18 CN CNU2007201440061U patent/CN201053575Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190115A (en) * | 2017-06-06 | 2017-09-22 | 崔景刚 | One kind reclaims valve group, gas recovery system and method |
| CN107190115B (en) * | 2017-06-06 | 2022-09-27 | 崔景刚 | Recovery valve group, gas recovery system and method |
| CN113217745A (en) * | 2021-06-07 | 2021-08-06 | 唐山市丰南区高氏工业气体有限公司 | Natural gas safety diffusing device |
| CN114459706A (en) * | 2022-02-09 | 2022-05-10 | 武汉鼎业环保工程技术有限公司 | Adjustable gas leakage prevention device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20160518 |