CN102374332A - Water supply and gas seal valve - Google Patents
Water supply and gas seal valve Download PDFInfo
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- CN102374332A CN102374332A CN2010102564797A CN201010256479A CN102374332A CN 102374332 A CN102374332 A CN 102374332A CN 2010102564797 A CN2010102564797 A CN 2010102564797A CN 201010256479 A CN201010256479 A CN 201010256479A CN 102374332 A CN102374332 A CN 102374332A
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Abstract
The invention relates to a water supply and gas seal valve, which belongs to the technical field of gas pipeline safety installations. The valve is in a funnel shape; the upper part of the valve is provided with an overflow hole; an inlet pipe extending at the bottom end of a conical shell at the lower part of the valve is communicated with a U-shaped pipe in a gas conveying pipeline through a connecting pipe; a valve seat hole in the inlet pipe is provided with a valve core; the upward side of the valve core is connected with a floating ball through an upwards extending valve rod; guide plates extending in the radial direction are fixedly connected with a conical shield in the conical shell; ring conical runners separated by the guide plates are formed between the conical shell and the conical shield; the valve rod and a positioning central hole at the bottom end of the conical shield are in movable fit; and the floating ball is located in the conical shield. According to the water supply and gas seal valve, when abnormally high pressure is generated on gas, the valve core can overcome the high pressure under the combined action of both dead weight and backflow force to rapidly close a valve seat, and thereby, the gas is prevented from leaking. Subsequently, water is gradually supplemented to the U-shaped pipe, and when the water supplement height meets the requirement, the floating ball automatically floats, thereby, the valve is opened, so that a water seal normally performs an action.
Description
Technical field
The present invention relates to a kind of envelope air valve, especially a kind of water flowing envelope air valve belongs to gaspipe line safety installations technical field.
Background technique
Along with deepening continuously of energy-saving and emission-reduction work; The coal gas diffusion rate continue to reduce, and the possibility of coal gas system pressure surge also increases greatly, especially when coal gas discharge pressure during in a high position; Run into some special circumstances like moment; Be easy to cause the pressure surge of coal gas, the result, gas pipe line water seal on the way will produce the problem of breaking through because of superpressure moment.
At present, the coal gas gas holder is being born the pressure controlled effect of coal gas system in coal gas system: when gas pressure is low, and exhaust; When pressure is high, gas storage.But when gas pressure moment rising, be difficult to play a role.In addition,,, open the valve emission coal gas automatically, diffuse under the situation at long-term " zero " when gas pressure surpasses specified height in limited time though gas bleeding valve can play the discharging effect, gas bleeding valve because of for a long time need not, very difficult assurance is diffused successfully at every turn.
Understand according to the claimant, the coal gas water seal of domestic use has the water seal of U type and multiple flow water seal, has confirmed its water seal height, a kind of height through increase flow process raising water shutoff in back during preceding a kind of installations.In general, when water shutoff is broken through, just there is the gas leakage problem in moment when not resisting the active force of gas pressure.Therefore, how to guarantee gaspipe line when abnormal pressure occurring, still can reliably prevent gas leakage, become gas supply and use a big crucial research topic of system.
Summary of the invention
The objective of the invention is to: to the demand for security on existing gas conveying tube road; Propose a kind of can be after water seal be broken through by high pressure; Closing passage prevent that reliably the water flowing of gas leakage from sealing air valve, and this valve is when moisturizing highly reaches requirement rapidly; Can open automatically, thereby water seal is normally played a role.
In order to reach above purpose, water flowing envelope air valve of the present invention is funnel-like, and top has flow-off, the extended inlet tube in conical shell bottom of bottom through take over the gas conveying tube road in the U-shaped pipe be communicated with; On the valve seat orifice in the said inlet tube spool is housed, said spool top is connected with ball float through upwardly extending valve rod; Be connected through water conservancy diversion leaf and the cone-shaped hood that radially extends in the said conical shell, form the ring tapered runner of being separated by the water conservancy diversion leaf between said conical shell and the cone-shaped hood; Said valve rod becomes movingly with the centre of location hole of cone-shaped hood bottom, and said ball float is positioned at cone-shaped hood.
During proper functioning,, therefore can work as gas pressure when certain limit fluctuates, prevent that it from leaking owing to be marked with water in the U-shaped pipe.When abnormal pressure occurring, coal gas will promote the water in the U-shaped pipe, from flow-off, overflow and water seal is broken through.Therefore at this moment,, make spool simultaneously under the acting in conjunction of deadweight and backflow power, overcome high pressure, and close valve seat rapidly, thereby prevent that coal gas from leaking because current through the ring tapered runner, according to fluid mechanics principle, will produce backflow power to the top of ball float.Afterwards, moisturizing gradually in the U-shaped pipe, when moisturizing highly reaches requirement, ball float will float automatically, thereby open valve, and water seal is normally played a role.
It is that the cone angle of said cone-shaped hood like this can more efficiently generation backflow power in 80-120 ° of scope that the present invention further improves.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the general structure schematic representation of one embodiment of the invention.
Fig. 2 is the structure for amplifying schematic representation of water flowing envelope air valve among Fig. 1 embodiment.
Fig. 3 is the structure for amplifying schematic representation of tapered segment among Fig. 2.
Fig. 4 is the structure for amplifying schematic representation of cone-shaped hood among Fig. 3.
Among the figure: the 1-suction flange; The 2-water-adding pipe; The 3-valve seat; The 4-spool; 5-weight adjusting strip; The 6-nut of screwing; The 7-valve rod; 8-centre of location hole; 9-rotation water conservancy diversion leaf; 10-tapered centre cover; 10-1--cone-shaped hood groove; The 11-hollow float; The 12-valve housing; The 13-overflow; 14-discharging and peep hole; The 15-inlet tube; 16-spool buoy; 17-U shape pipe; The 18-waste pipe; The 19-drain valve; 20-U shape water seal header; 21-header wicket.
Embodiment
Embodiment one
The water flowing of present embodiment envelope air valve is as shown in Figure 2, and the profile of valve housing 12 is funnel-like, and top one side has flow-off 13, the extended inlet tube 15 in the conical shell bottom of bottom, this pipe through take over the gas conveying tube road in U-shaped pipe 17 be communicated with.
Adapter is made up of U-shaped water seal header 20 and waste pipe 18, and the lower end of said inlet tube 15 is communicated with a place of U-shaped water seal header 20, and another place of this header is communicated with the lowest part of U-shaped pipe 17 in the gas conveying tube road through upwardly extending waste pipe 18.
Valve seat 3 centers in the inlet tube 15 have through hole, and it is the spool 4 of spherical crown surface that the bottom surface is housed on this hole, and this spool top is connected with ball float 11 through upwardly extending valve rod 7.In order to regulate deadweight, also be fixed with weight adjusting strip 5 on the spool 4.Be connected with cone-shaped hood 10 through the some water conservancy diversion leaves 9 that radially extend in the conical shell of valve housing bottom, form the ring tapered runner of being separated by water conservancy diversion leaf 9 between conical shell and the cone-shaped hood 10.8 one-tenth in the centre of location hole of valve rod 7 and cone-shaped hood bottom movingly, ball float 11 is positioned at cone-shaped hood 10, its top exceeds cone-shaped hood, and is fixed with the buoy 16 of band scale.Water supplement port 2 also leads to peep hole 14 places at valve housing top when leading to inlet tube 15.
Present embodiment produces the theoretical foundation act on ball float backflow power: in fluid mechanics, fluid is flowed through behind the obstacle, behind obstacle, can produce the backflow negative pressure.When nonviscous fluid streamed cylinder, because flow separation takes place at the rear portion, pressure can not return to and anterior identical level, therefore keeps negative value (gauge pressure).
Experiment records; The boundary separation of periphery pressure coefficient is o'clock about about 80 °; Boundary layer transition is that the separation point that take place to separate after the turbulent flow is about about 120 °; So the cone angle (present embodiment is about 90 °) in 80-120 ° of scope of said cone-shaped hood, like this can more efficiently generation backflow power.In addition, fluid is different with the situation of non-rotary free jet through the distribution situation of water conservancy diversion leaf rotary jet tangential velocity, and near the speed its axle center is on the contrary little, and often is negative value.This is because swirling eddy entrainments ambient gas to get more and more, and the momentum of air-flow is certain, so speed is inevitable more and more littler, and fast with decaying to of tangential velocity.In view of the above, be beneficial to the eddy flow that produces backflow power, form the helix angle (referring to Fig. 2) of 30-60 ° (preferably 45 °) between each water conservancy diversion leaf 9 and the cone-shaped hood in order to be formed with.
During concrete the design, the top edge of cone-shaped hood 10 exceeds the ball float center is advisable, and engraves out four groove 10-1 (referring to Fig. 4) along the cone-shaped hood bus, as the usefulness of leaking, helps further eliminating the whereabouts resistance of ball float.Every groove adds the weldering shutter.Rotation water conservancy diversion leaf is arranged in tapered centre cover and the valve housing conical shell makeup ring tapered runner, and rotation water conservancy diversion number of sheets amount is advisable greater than 8, is uniformly distributed with along ring.
Test shows that under the situation that the coal gas water seal is broken through, coal gas water shutoff pipeline Central Plains has water shutoff to be substituted by the coal gas that flows; Coal gas gets into the water flowing envelope air valve of present embodiment, walks around shunting of valve body tapered centre cover and rotation water conservancy diversion leaf rotary steering, and backflow has been formed at (top) behind tapered centre cover and hollow float; Make the ball float loss of buoyance, receive the effect of the spool connection part self gravitation of valve, move down along valve rod centre of location hole; The drive valve rod moves down with valve seat with spool and contacts; Thereby throttle down cuts off path, prevents gas leak.
Behind the valve closing, the water seal moisturizing is through water supplement port moisturizing in the valve intake pipe.After water shutoff highly reached water shutoff requirement or inlet tube and advances full water, moisturizing got into valve, and hollow float floats once more behind the valve full water, drives on valve rod, the spool to move, and promptly opens valve automatically, treats the overflow water outlet, and the water shutoff effect of water seal can normally be brought into play.
Evidence adopts the ability instance to improve the safety reliability of low-pressure gas water seal, the system that discharges water, and efficiently solves the automatic water supplement problem after the coal gas water seal is broken through.
Except that the foregoing description, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (8)
1. water flowing envelope air valve, water flowing envelope air valve is funnel-like, top has flow-off, the extended inlet tube in conical shell bottom of bottom through take over the gas conveying tube road in the U-shaped pipe be communicated with; On the valve seat orifice in the said inlet tube spool is housed, said spool top is connected with ball float through upwardly extending valve rod; Be connected through water conservancy diversion leaf and the cone-shaped hood that radially extends in the said conical shell, form the ring tapered runner of being separated by the water conservancy diversion leaf between said conical shell and the cone-shaped hood; Said valve rod becomes movingly with the centre of location hole of cone-shaped hood bottom, and said ball float is positioned at cone-shaped hood.
2. water flowing envelope air valve according to claim 1, it is characterized in that: the cone angle of said cone-shaped hood is 80-120 °.
3. water flowing envelope air valve according to claim 2 is characterized in that: form 30-60 ° helix angle between said water conservancy diversion leaf and the cone-shaped hood.
4. according to claim 1,2 or 3 described water flowing envelope air valves, it is characterized in that: the bus of said cone-shaped hood is engraved out the groove of the usefulness of leaking, and said groove adds shutter.
5. water flowing envelope air valve according to claim 4, it is characterized in that: the top edge of said cone-shaped hood exceeds the ball float center.
6. water flowing envelope air valve according to claim 5; It is characterized in that: said adapter is made up of U-shaped water seal header and waste pipe; The lower end of said inlet tube is communicated with a place of U-shaped water seal header, and another place of said header is communicated with the lowest part of U-shaped pipe in the gas conveying tube road through upwardly extending waste pipe.
7. water flowing envelope air valve according to claim 6 is characterized in that: also be fixed with the weight adjusting strip on the said spool.
8. water flowing envelope air valve according to claim 7 is characterized in that: water supplement port also leads to the peep hole place at valve housing top when leading to said inlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010256479 CN102374332B (en) | 2010-08-18 | 2010-08-18 | Water supply and gas seal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010256479 CN102374332B (en) | 2010-08-18 | 2010-08-18 | Water supply and gas seal valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374332A true CN102374332A (en) | 2012-03-14 |
| CN102374332B CN102374332B (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010256479 Expired - Fee Related CN102374332B (en) | 2010-08-18 | 2010-08-18 | Water supply and gas seal valve |
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| Country | Link |
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| CN (1) | CN102374332B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214407A (en) * | 2013-09-05 | 2014-12-17 | 任文建 | Constant-flow drain valve |
| CN111911487A (en) * | 2020-06-24 | 2020-11-10 | 燕山大学 | Exhaust valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566485A (en) * | 1984-11-19 | 1986-01-28 | Ruhle James L | Free-floating neutrally-buoyant reciprocating pump valve for abrasive fluids |
| JPH11270734A (en) * | 1998-03-20 | 1999-10-05 | Nisshin Steel Co Ltd | Gas blow preventing valve |
| CN200968425Y (en) * | 2006-10-25 | 2007-10-31 | 林建立 | Water purifier back valve |
| CN200972055Y (en) * | 2006-10-18 | 2007-11-07 | 济南海鹰机电制造有限公司 | Gas leakage-proof device for gas pipeline drainage device |
-
2010
- 2010-08-18 CN CN 201010256479 patent/CN102374332B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566485A (en) * | 1984-11-19 | 1986-01-28 | Ruhle James L | Free-floating neutrally-buoyant reciprocating pump valve for abrasive fluids |
| JPH11270734A (en) * | 1998-03-20 | 1999-10-05 | Nisshin Steel Co Ltd | Gas blow preventing valve |
| CN200972055Y (en) * | 2006-10-18 | 2007-11-07 | 济南海鹰机电制造有限公司 | Gas leakage-proof device for gas pipeline drainage device |
| CN200968425Y (en) * | 2006-10-25 | 2007-10-31 | 林建立 | Water purifier back valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214407A (en) * | 2013-09-05 | 2014-12-17 | 任文建 | Constant-flow drain valve |
| CN111911487A (en) * | 2020-06-24 | 2020-11-10 | 燕山大学 | Exhaust valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102374332B (en) | 2013-10-23 |
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Granted publication date: 20131023 Termination date: 20190818 |
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