CN105003713A - Sealing end cover of ball valve - Google Patents

Sealing end cover of ball valve Download PDF

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Publication number
CN105003713A
CN105003713A CN201510488832.7A CN201510488832A CN105003713A CN 105003713 A CN105003713 A CN 105003713A CN 201510488832 A CN201510488832 A CN 201510488832A CN 105003713 A CN105003713 A CN 105003713A
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CN
China
Prior art keywords
ball valve
opening
end cover
sealing
air pump
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.)
Granted
Application number
CN201510488832.7A
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Chinese (zh)
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CN105003713B (en
Inventor
童津金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd
Original Assignee
NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd
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Application filed by NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd filed Critical NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd
Priority to CN201510488832.7A priority Critical patent/CN105003713B/en
Publication of CN105003713A publication Critical patent/CN105003713A/en
Application granted granted Critical
Publication of CN105003713B publication Critical patent/CN105003713B/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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/12Covers for housings

Abstract

The invention discloses a sealing end cover of a ball valve. The sealing end cover comprises an end cover body and further comprises an air channel, wherein an opening for insertion of the end part of the ball valve is formed in the end cover body; a circle of groove is circumferentially formed in the side wall of the opening; a sealing ring is arranged in the groove; a top plate is movably arranged in the opening; a detection air hole for being connected with a detection gas source is formed in the top plate; a piston air pump is arranged at the bottom of the opening; the piston air pump and the sealing ring are communicated through the air channel. The sealing end cover has the advantages that the end part of the ball valve is propped against the top plate, and the piston air pump is compressed by the top plate to inflate and expand the sealing ring circumferentially arranged at the opening, so that sealing during insertion of the end part of the ball valve can be realized; during insertion of the end part of the ball valve, inflatable sealing of the sealing ring can be automatically realized, so that neither special gas sources for external connection nor an extra operation step is needed.

Description

A kind of ball valve sealing end cap
Technical field
The present invention relates to test apparatus field, more specifically, relating to a kind of end cover for sealing ball valve end face.
Background technique
Industrial polyethylene (PE) ball valve is the important controlling component of pipe network, requires that experiments of sealing performance is carried out in pressurization before therefore using.When prior art is tested ball valve, usual employing sealing gasket or seal ring are placed in the outside at ball valve two ends, be clamped in ball valve two ends with the force application device such as cylinder or jack simultaneously, thus sealing gasket or seal ring and ball valve two ends are formed seal, then pass into pressurized gas toward ball valve inside and check its sealability.Said structure has following defect: 1) adopt jack to press down pressing plate thus ball valve is sealed and seal ring to be placed in ball valve two ends outside, and by cylinder clamping when ball valve two ends seal, the all more difficult control of dynamics of both, the words that the power pressing down or clamp is inadequate, the sealing of sealing gasket and ball valve end may be made not firm, thus the accuracy of impact test, bring qualitative erroneous judgement, the words that the power pressing down or clamp is excessive, ball valve can be made to deform, cause the out-of-flatness of ball valve end face, thus make cannot form sealing between ball valve and pressing plate, bring qualitative erroneous judgement, in addition, the words that the power pressing down or clamp is excessive, also directly ball valve can be damaged.
Based on above-mentioned defect, number of patent application is " 201420783671.5 ", name is called in the patent of invention of " a kind of ball valve sealing end cap " and discloses a kind of ball valve end face seal structure, comprise a cylindrical body end cover body, a positioning plate and an inflation seal ring, relatively fixing by some connecting rods between positioning plate and end cover body; Described end cover body circumferentially offers a groove for accommodating inflation seal ring, and inflation seal ring is arranged in groove.During use, ball valve two ends are stretched to end cover body position, and then by inflating to realize its sealing to ball valve in inflation seal ring.Because end cover body does not stress, therefore measuring accuracy is improved.But still have problems in above-mentioned technical pattern, concrete, owing to needing the external gas source arranged specially for inflating inflation seal ring, very inconvenient during use, and the setting of extraneous source of the gas also makes equipment cost rise.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of ball valve sealing end cap.
The present invention is achieved through the following technical solutions: a kind of ball valve sealing end cap, comprise end cover body, described end cover body is provided with the opening inserted for ball valve end, the sidewall circumference of described opening is provided with a circle groove, in described groove, seal ring is set, top board is movably set with in described opening, described top board is provided with for connecting the detection pore detecting source of the gas, in described open bottom, piston air pump is set, also comprise gas channel, described gas channel is communicated with described piston air pump and described seal ring, when described top board to slide onto to described piston air pump direction its compressed time, described piston air pump makes it expand to described seal ring inflation.
In technique scheme, also comprise an elastic component, elastic component one end leans open bottom end, and the other end leans described top board.
In technique scheme, described opening sidewalls is provided with step, described step is provided with top plate seal pad.
The present invention has following beneficial effect: the present invention is when the opening that end cover body is arranged is inserted in ball valve end, above-mentioned end leans top board and makes top board compression piston air pump, piston air pump carries out inflation to the seal ring arranged in opening circumference makes it expand, thus realize the sealing of ball valve end when inserting, said structure automatically realizes the gas-flow closure of seal ring while ball valve end is inserted, without the need to arranging special external gas source, do not produce extra operating procedure.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is cross-sectional schematic of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail: see Fig. 1 to Fig. 2, a kind of ball valve sealing end cap, comprise end cover body 1, described end cover body 1 is provided with the opening 10 inserted for ball valve end, the sidewall circumference of described opening 10 is provided with a circle groove 11, in described groove 11, seal ring 2 is set, top board 3 is movably set with in described opening 10, described top board 3 is provided with for connecting the detection pore 30 detecting source of the gas, bottom described opening 10, piston air pump 4 is set, also comprise gas channel 6, described gas channel 6 is communicated with described piston air pump 4 and described seal ring 2, when described top board 3 to slide onto to described piston air pump 4 direction its compressed time, described piston air pump 4 makes it expand to described seal ring 2 inflation.During use, the opening 10 that end cover body 1 is arranged is aimed in ball valve one end stretch into, when ball valve end face withstands end cover body 1 inside ceiling panel 3, continue to carry out, piston air pump 4 on rear side of top board 3 is compressed, by gas channels 6, seal ring 2 is expanded, hold locked ball valve end tightly, thus realize sealing.
Described opening 10 sidewall is provided with step 12, described step 12 is provided with top plate seal pad 7.When described top board 3 is passed to when leaning described top plate seal pad position, described top plate seal pad is extruded, and furthermore achieved that the sealing of end cover body 1 and described ball valve end face.
Also comprise an elastic component 5, elastic component one end leans opening 10 bottom, and the other end leans described top board 3.When being completed, ball valve is dropped back, due to the effect of elastic component 5, top board 3 and piston air pump 4 are dropped back simultaneously, and now seal ring pressure release is shunk, make to hold locked power tightly to reduce, be convenient to ball valve dismounting, elastic component 5 can adopt spring, cylinder that elastic material is made etc., in the present embodiment, the structure of elastic component 5 is not limited, it can be made as long as elastic component 5 meets to reset after top board 3 is passed end.

Claims (3)

1. a ball valve sealing end cap, comprise end cover body (1), described end cover body (1) is provided with the opening (10) inserted for ball valve end, it is characterized in that: the sidewall circumference of described opening (10) is provided with a circle groove (11), seal ring (2) is set in described groove (11), top board (3) is movably set with in described opening (10), described top board (3) is provided with for connecting the detection pore (30) detecting source of the gas, in described opening (10) bottom, piston air pump (4) is set, also comprise gas channel (6), described gas channel (6) is communicated with described piston air pump (4) and described seal ring (2), when described top board (3) to slide onto to described piston air pump (4) direction its compressed time, described piston air pump (4) makes it expand to described seal ring (2) inflation.
2. a kind of ball valve sealing end cap as claimed in claim 1, it is characterized in that: also comprise an elastic component (5), elastic component one end leans opening (10) bottom, and the other end leans described top board (3).
3. a kind of ball valve sealing end cap as claimed in claim 1, is characterized in that: on described opening (10) sidewall, be provided with step (12), described step (12) is provided with top plate seal pad (7).
CN201510488832.7A 2015-08-11 2015-08-11 A kind of ball valve sealing end cap Active CN105003713B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510488832.7A CN105003713B (en) 2015-08-11 2015-08-11 A kind of ball valve sealing end cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510488832.7A CN105003713B (en) 2015-08-11 2015-08-11 A kind of ball valve sealing end cap

Publications (2)

Publication Number Publication Date
CN105003713A true CN105003713A (en) 2015-10-28
CN105003713B CN105003713B (en) 2017-10-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105588686A (en) * 2016-02-04 2016-05-18 宁波恒元精工管阀科技有限公司 Testing device for testing sealing effect of large-aperture ball valve
CN108871707A (en) * 2018-08-22 2018-11-23 邹凯 A kind of leakage detection apparatus of natural gas ball valve
CN109029870A (en) * 2018-08-22 2018-12-18 邹凯 A kind of end cap of ball valve
WO2021134986A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Trailing suction hopper dredger broadside suction port pneumatic sealing apparatus
WO2021134987A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Airbag sealing device for side suction port of trailing suction hopper dredger
WO2021134988A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Bidirectional sealing apparatus for shipside suction port of trailing suction hopper dredger

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760632A (en) * 1970-12-04 1973-09-25 Csepeli Tervezo Intezet Pressure testing machines for tubes
CN201303269Y (en) * 2008-10-13 2009-09-02 赵松辰 Full-enclosed oil mist/oil gas recovery device for electric spindle
JP5140412B2 (en) * 2007-12-28 2013-02-06 前澤給装工業株式会社 Water pipe leak detection method and water stop cock with leak detection function
CN104165734A (en) * 2014-07-08 2014-11-26 宁波市宇华电器有限公司 End cap for testing ball valve sealing
CN204043867U (en) * 2014-07-08 2014-12-24 宁波市宇华电器有限公司 The end cap of sealing property of ball valves test
CN204300460U (en) * 2014-12-12 2015-04-29 杭州戴雷科技有限公司 A kind of ball valve sealing end cap
CN204424596U (en) * 2015-03-16 2015-06-24 盐城工学院 A kind of electric car power supply linear sealing syndeton
CN104806903A (en) * 2015-03-13 2015-07-29 浙江恒曼光电科技有限公司 Dual drive rotary-type LED lamp tube
CN104819294A (en) * 2015-03-17 2015-08-05 盐城工学院 Electric vehicle charging port sealing structure with excellent waterproof function
CN204922153U (en) * 2015-08-11 2015-12-30 宁波恒元精工管阀科技有限公司 Ball valve end cover

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760632A (en) * 1970-12-04 1973-09-25 Csepeli Tervezo Intezet Pressure testing machines for tubes
JP5140412B2 (en) * 2007-12-28 2013-02-06 前澤給装工業株式会社 Water pipe leak detection method and water stop cock with leak detection function
CN201303269Y (en) * 2008-10-13 2009-09-02 赵松辰 Full-enclosed oil mist/oil gas recovery device for electric spindle
CN104165734A (en) * 2014-07-08 2014-11-26 宁波市宇华电器有限公司 End cap for testing ball valve sealing
CN204043867U (en) * 2014-07-08 2014-12-24 宁波市宇华电器有限公司 The end cap of sealing property of ball valves test
CN204300460U (en) * 2014-12-12 2015-04-29 杭州戴雷科技有限公司 A kind of ball valve sealing end cap
CN104806903A (en) * 2015-03-13 2015-07-29 浙江恒曼光电科技有限公司 Dual drive rotary-type LED lamp tube
CN204424596U (en) * 2015-03-16 2015-06-24 盐城工学院 A kind of electric car power supply linear sealing syndeton
CN104819294A (en) * 2015-03-17 2015-08-05 盐城工学院 Electric vehicle charging port sealing structure with excellent waterproof function
CN204922153U (en) * 2015-08-11 2015-12-30 宁波恒元精工管阀科技有限公司 Ball valve end cover

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105588686A (en) * 2016-02-04 2016-05-18 宁波恒元精工管阀科技有限公司 Testing device for testing sealing effect of large-aperture ball valve
CN105588686B (en) * 2016-02-04 2018-04-10 宁波恒元精工管阀科技有限公司 A kind of testing equipment for testing big-diameter ball valve sealing effectiveness
CN108871707A (en) * 2018-08-22 2018-11-23 邹凯 A kind of leakage detection apparatus of natural gas ball valve
CN109029870A (en) * 2018-08-22 2018-12-18 邹凯 A kind of end cap of ball valve
WO2021134986A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Trailing suction hopper dredger broadside suction port pneumatic sealing apparatus
WO2021134987A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Airbag sealing device for side suction port of trailing suction hopper dredger
WO2021134988A1 (en) * 2019-12-30 2021-07-08 长江南京航道工程局 Bidirectional sealing apparatus for shipside suction port of trailing suction hopper dredger

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