CN104373742A - Pressure limiting type liquid column separation preventing air valve - Google Patents

Pressure limiting type liquid column separation preventing air valve Download PDF

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Publication number
CN104373742A
CN104373742A CN201410530402.2A CN201410530402A CN104373742A CN 104373742 A CN104373742 A CN 104373742A CN 201410530402 A CN201410530402 A CN 201410530402A CN 104373742 A CN104373742 A CN 104373742A
Authority
CN
China
Prior art keywords
pressure
air valve
column separation
chamber
type liquid
Prior art date
Application number
CN201410530402.2A
Other languages
Chinese (zh)
Inventor
蒋劲
陈昶
翁晓红
肖志怀
李东东
宋红岩
Original Assignee
武汉大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 武汉大学 filed Critical 武汉大学
Priority to CN201410530402.2A priority Critical patent/CN104373742A/en
Publication of CN104373742A publication Critical patent/CN104373742A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0406Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04Devices damping pulsations or vibrations in fluids
    • F16L55/045Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/055Valves therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

Abstract

The invention discloses a pressure limiting type liquid column separation preventing air valve. According to the pressure limiting type liquid column separation preventing air valve, an upper cavity (15) and a lower cavity (14) are connected through a flange, and the lower cavity (14) is further communicated with a pressure relief chamber (16); an air inlet and outlet channel is formed in the lower portion of the upper cavity (15), a floating plate (5) is connected with the top of the upper cavity (15) through limiting springs (7), and a supporting plate (4) used for supporting the floating plate (5) is arranged at the top end of the air inlet and outlet channel; an air inlet and outlet channel is formed in the upper cavity (15), a guide plate (3) with a U-shaped section is arranged in the air inlet and outlet channel, a metal ball (1) is arranged in the guide plate (3), a shaft lever (2) is arranged in the center of the bottom of the metal ball (1), and the lower end of the shaft lever (2) is a free end. The pressure limiting type liquid column separation preventing air valve has the advantages that the pressure limiting type liquid column separation preventing air valve is installed along a water supply pipeline, efficiency can be improved, and a pump starting water hammer can be avoided; when an accident occurs and a pump stops, by means of the adjustment of the floating plate, when negative pressure appears in the pipeline, the vaporization phenomenon can be avoided by absorbing a large amount of air; when the pressure in the pipeline is too high, a buffering function is achieved through micro air exhaust, a closing water hammer is avoided, and part of high-pressure water in the pipeline can be drained through the pressure limiting type liquid column separation preventing air valve to lower pressure.

Description

The anti-column separation air valve of limited pressure
Technical field
The present invention relates to air valve technical field, specifically a kind of air valve that can reduce overpressure by releasing partial high pressure water.
Background technique
Air valve is a kind of protecting water hammer measure the most frequently used in water supply project.Pipeline is usually disposed on the way at present, especially Local Convex height point at water system Air Valve.When the unexpected power-off of pumping plant unit or have an accident termination of pumping time, it is by eliminating the vaporization phenomenon because column separation causes to rapid, high volume tonifying Qi in pipeline; Simultaneously when occurring in pipeline to make phenomenon after column separation again up, air valve, by slowly exhaust, plays buffer function, prevents the generation of making up property water hammer; But opening in pump process, this type of air valve can not gas in discharge tube fast, prevents the generation of pump start water hammer; Simultaneously in termination of pumping accident water hammer, along with the distance that supplies water is more and more longer and the continuing to increase of flow, normal air valve is due to the characteristic of its quick air inlet trace exhaust, often cause managing interior gas not get rid of in time, be subject to fluid column and make extruding up, make remain a large amount of pressurized gas in pipeline, and then near increasing, manage the pressure of interior water, particularly when air valve mounting point is more, time closeer, the pressure-bearing risk of whole pipeline can be increased.Air valve manufacturer all can only solve one or both problems above-mentioned both at home and abroad at present, is never resolved to the problem that pressurized gas residual in pipeline cause hydraulic pressure higher.
Summary of the invention
The object of the invention is to design the anti-column separation air valve of a kind of limited pressure for above-mentioned present situation, can when opening pump gas in timely discharge tube, improve transfer efficiency, prevent the generation of pump start water hammer; Also can play the function of the micro-row of gas injection when there is pump-stopping water hammer, the generation of anti-devaporation and making up property water hammer simultaneously; When causing water pressure higher due to pressurized gas in pipeline, release partial high pressure water, reduce overpressure, prevent pipeline breaking, effective, efficiency is high.
The anti-column separation air valve of a kind of limited pressure, comprise upper chamber 15 and lower chambers 14 by Flange joint, described lower chambers 14 is also connected with pressure releasing chamber 16; Described upper chamber 15 offers intake and exhaust channel in bottom, and kickboard 5 is connected with upper chamber 15 top by limit spring 7, and intake and exhaust channel top is provided with the dunnage 4 for supporting kickboard 5; Establish intake and exhaust channel in described upper chamber 15, be provided with the guide plate 3 that section is U-shaped in intake and exhaust channel, establish Metal Ball 1 in guide plate 3, Metal Ball 1 bottom centre is provided with axostylus axostyle 2, and axostylus axostyle 2 lower end is free end, is wrapped in bottom guide plate 3; Annular current by pass 12 is offered in described pressure releasing chamber 16 lower end, has flowing hole 11 bottom pressure releasing chamber 16, establishes the blocking cone-shaped valve head 9 for flowing hole 11 in pressure releasing chamber 16, and cone-shaped valve head 9 is connected with pressure releasing chamber 16 top by limit spring 10.
Described kickboard 5 center has exhaust port 6.
The diameter of described Metal Ball 1 is greater than the channel diameter of upper chamber 15 and lower chambers 14 connecting part.
The joint of the joint of described upper chamber 15 and lower chambers 14, lower chambers 14 and pressure releasing chamber 16 is respectively equipped with seal ring 13.
The advantage of the anti-column separation air valve of limited pressure of the present invention is:
1. this air valve installed on the way by water supply line, can residual gas in drain in water filling process, raises the efficiency and prevents pump start water hammer;
2. when have an accident termination of pumping time, this air valve can by the adjustment of kickboard, and when there is negative pressure in pipe, a large amount of air-breathing prevents vaporization phenomenon; When manifold pressure is too high, trace has been vented buffer function, prevents the generation of making water hammer up;
3. when causing overpressure in pipeline owing to entering a large amount of gas, a part of high pressure water can be released by the sluicing room of this air valve, reduce overpressure, prevent the generation of booster.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 of the present inventionly partly cuts open structural representation.
Fig. 3 is the perspective view of pressure releasing chamber.
Fig. 4 be pressure releasing chamber partly cut open structural representation.
In figure, 1 is Metal Ball, and 2 is axostylus axostyle, and 3 is guide plate, and 4 is dunnage, and 5 is kickboard, 6 is exhaust port, and 7,10 are limited pressing spring, and 8 is spacing valve body, and 9 is cone-shaped valve head, and 11 is flowing hole, 12 is current by pass, and 13 is seal ring, and 14 is lower chambers, and 15 is upper chamber, and 16 is pressure releasing chamber.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described: as Figure 1-4, the anti-column separation air valve of a kind of limited pressure, comprise and to be provided with a Metal Ball 1 that can move up and down by liquid buoyancy in lower chambers and to move with the axostylus axostyle 2 be connected by control Metal Ball 1 lower end and control the guide plate 3 of Metal Ball moving direction, above Metal Ball 1, have a heavy caliber gas-entered passageway; To the passive dunnage 4 of kickboard 5 in upper chamber, wherein said kickboard 5 center is provided with exhaust port 6, is provided with pressure limiting spring 7 and spacing valve body 8 above it; Be provided with cone-shaped valve head 9 in sluicing room, side, be provided with pressure limiting spring 10 above cone-shaped valve head 9, below is provided with flowing hole 11, and sluicing room valve body is provided with annular current by pass 12 for one week.
Kickboard 5 original state is pressed 7 in dunnage 4 by top pressure limiting spring; Spacing valve body 8 when gas blows afloat kickboard 5 and kickboard 5 can fit tightly and seal;
In pressure releasing chamber, pressure limiting spring 10 is pressed on cone-shaped valve head 9 head on flow-out hole 11, and when high pressure water rushes valve head, high pressure water releases reduction overpressure by the current by pass 12 of pressure releasing chamber valve body 16.
The junction surface of lower chambers valve body 14 and upper chamber's valve body 15 is sealed by seal ring 13.
Specific works mode is:
As shown in Figure 1, the Metal Ball of lower chambers is owing to can only float by the liquid buoyancy effect of carrying in the multi-functional intake and exhaust air valve place pipeline of the step-down that can sluice, and when normal conveying runs, Metal Ball is floated due to liquid buoyancy, block top intake and exhaust channel, prevent from leaking.
Be provided with an aperture at the kickboard center of upper chamber, when manage in water-filling time, Metal Ball falls or does not float completely, pipe in gas pressure less, above kickboard pressure limiting spring handle kickboard be pressed in below dunnage on, gas is discharged fast from kickboard side; When after unexpected termination of pumping generation column separation, Metal Ball falls, and produce negative pressure in pipe, kickboard is stopped on the supporting plate, and outside gasses is entered in pipeline in a large number by heavy caliber passage, prevents vaporization phenomenon; When in managing, gas pressure rises, kickboard is blowed floating by gas and rises to spacing valve body place, and gas, from the slowly trace discharge of kickboard central small hole, plays buffer function, prevents the generation of making water hammer up.
When not discharging in time when sucking a large amount of gas in managing, because fluid column makes extruding up, Metal Ball blocks exhaust passage, top because buoyancy of water rises, in pipe, gas pressure raises, cause surrounding liquid to raise, when fluid pressure is higher than pressure limiting spring above cone-shaped valve head in pressure releasing chamber, cone-shaped valve head is open, high pressure water releases, and reduces liquid in pipe pressure.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as Metal Ball 1, axostylus axostyle 2, guide plate 3, dunnage 4, kickboard 5, exhaust port 6, pressure limiting spring 7, spacing valve body 8, cone-shaped valve head 9, pressure limiting spring 10, flowing hole 11, current by pass 12, seal ring 13, lower chambers 14, upper chamber 15, pressure releasing chamber 16 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.

Claims (4)

1. the anti-column separation air valve of limited pressure, is characterized in that: comprise upper chamber (15) with lower chambers (14) by Flange joint, (16) (14) described lower chambers be also connected with pressure releasing chamber; Described upper chamber (15) bottom offers intake and exhaust channel, and (15) (7) (5) kickboard be connected at top with upper chamber by limit spring, and intake and exhaust channel top is provided with for supporting kickboard dunnage (5) (4); Described upper chamber (15) in establish intake and exhaust channel, be provided with in intake and exhaust channel section be the guide plate of U-shaped (3), guide plate (3) in establish Metal Ball (1), (2) Metal Ball (1) bottom centre is provided with axostylus axostyle, and axostylus axostyle (2) lower end is free end; (12) described pressure releasing chamber (16) lower end offers annular current by pass, and (11) pressure releasing chamber (16) bottom has flowing hole, pressure releasing chamber (16) in establish for flowing hole blocking cone-shaped valve head (11) (9), (16) (10) (9) cone-shaped valve head be connected at top with pressure releasing chamber by limit spring.
2. the anti-column separation air valve of limited pressure as claimed in claim 1, is characterized in that: (6) described kickboard (5) center has exhaust port.
3. the anti-column separation air valve of limited pressure as claimed in claim 1, is characterized in that: described Metal Ball diameter be (1) greater than upper chamber (15) with the channel diameter of lower chambers (14) connecting part.
4. the anti-column separation air valve of limited pressure as claimed in claim 1, is characterized in that: (13) (14) (15) described upper chamber be respectively equipped with seal ring with pressure releasing chamber joint (16) with lower chambers joint (14), lower chambers.
CN201410530402.2A 2014-10-10 2014-10-10 Pressure limiting type liquid column separation preventing air valve CN104373742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410530402.2A CN104373742A (en) 2014-10-10 2014-10-10 Pressure limiting type liquid column separation preventing air valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410530402.2A CN104373742A (en) 2014-10-10 2014-10-10 Pressure limiting type liquid column separation preventing air valve

Publications (1)

Publication Number Publication Date
CN104373742A true CN104373742A (en) 2015-02-25

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913111A (en) * 2015-06-05 2015-09-16 株洲南方阀门股份有限公司 Water-hammer-proof air valve and exhaust method thereof in pipeline use process
CN106195414A (en) * 2016-09-20 2016-12-07 上海冠龙阀门机械有限公司 A kind of composite exhaust valve with buffer unit
CN108397591A (en) * 2018-01-29 2018-08-14 华北水利水电大学 A kind of pressure limiting intake and exhaust integral valve
CN108609394A (en) * 2016-08-16 2018-10-02 林桂花 A kind of method of mining mortar conveying

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735579B1 (en) * 2006-11-02 2007-07-06 주식회사 삼진정밀 Water-works of many function with air-bent
KR101086020B1 (en) * 2011-07-05 2011-11-22 (주) 삼진정밀 Water hammering prevention of air valve
CN102401155A (en) * 2011-08-30 2012-04-04 深圳市华力大机电技术有限公司 Air valve set with four functions for waterproof hammer
CN102900890A (en) * 2012-10-10 2013-01-30 武汉大禹阀门股份有限公司 Bridged water hammer prevention valve group with filtering and backflushing functions
CN103542138A (en) * 2013-11-01 2014-01-29 深圳市华力大机电技术有限公司 Airbag type ventilation and drainage positive and negative pressure water hammer control valve group

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735579B1 (en) * 2006-11-02 2007-07-06 주식회사 삼진정밀 Water-works of many function with air-bent
KR101086020B1 (en) * 2011-07-05 2011-11-22 (주) 삼진정밀 Water hammering prevention of air valve
CN102401155A (en) * 2011-08-30 2012-04-04 深圳市华力大机电技术有限公司 Air valve set with four functions for waterproof hammer
CN102900890A (en) * 2012-10-10 2013-01-30 武汉大禹阀门股份有限公司 Bridged water hammer prevention valve group with filtering and backflushing functions
CN103542138A (en) * 2013-11-01 2014-01-29 深圳市华力大机电技术有限公司 Airbag type ventilation and drainage positive and negative pressure water hammer control valve group

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913111A (en) * 2015-06-05 2015-09-16 株洲南方阀门股份有限公司 Water-hammer-proof air valve and exhaust method thereof in pipeline use process
WO2016192603A1 (en) * 2015-06-05 2016-12-08 株洲南方阀门股份有限公司 Water hammer-proof air valve and water hammer-proof exhaust method for in-use pipeline
US10690262B2 (en) 2015-06-05 2020-06-23 Zhuzhou Southern Valve Co. Ltd. Water hammer-proof air valve and water hammer-proof exhaust method for in-use pipeline
CN108609394B (en) * 2016-08-16 2020-09-25 泉州台商投资区连进信息技术有限公司 Method for conveying mine mortar
CN108609394A (en) * 2016-08-16 2018-10-02 林桂花 A kind of method of mining mortar conveying
CN106195414B (en) * 2016-09-20 2019-05-14 上海冠龙阀门机械有限公司 A kind of composite exhaust valve with buffer unit
CN106195414A (en) * 2016-09-20 2016-12-07 上海冠龙阀门机械有限公司 A kind of composite exhaust valve with buffer unit
CN108397591A (en) * 2018-01-29 2018-08-14 华北水利水电大学 A kind of pressure limiting intake and exhaust integral valve

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Application publication date: 20150225

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