CN109029870A - A kind of end cap of ball valve - Google Patents

A kind of end cap of ball valve Download PDF

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Publication number
CN109029870A
CN109029870A CN201810960905.1A CN201810960905A CN109029870A CN 109029870 A CN109029870 A CN 109029870A CN 201810960905 A CN201810960905 A CN 201810960905A CN 109029870 A CN109029870 A CN 109029870A
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CN
China
Prior art keywords
linker
ball valve
plate
sealing cover
cylinder
Prior art date
Application number
CN201810960905.1A
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Chinese (zh)
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CN109029870B (en
Inventor
邹凯
Original Assignee
邹凯
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Publication date
Application filed by 邹凯 filed Critical 邹凯
Priority to CN201810960905.1A priority Critical patent/CN109029870B/en
Publication of CN109029870A publication Critical patent/CN109029870A/en
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Publication of CN109029870B publication Critical patent/CN109029870B/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention discloses a kind of end caps of ball valve, it is related to the technical field of ball valve port sealing, including at least driving plate, push plate and sealing cover, the push plate is between driving plate and sealing cover, it is fixedly connected between the driving plate and push plate by several connecting rods, is connected between the push plate and sealing cover by several first springs.The problem of present invention can press to ball valve both ends to solve existing ball valve leak test plant when testing, and ball valve deformation is caused to influence test result, proposes that one kind makes ball valve both ends by axial force, not improve the ball valve sealing end cap of measuring accuracy.

Description

A kind of end cap of ball valve

Technical field

The present invention relates to the technical field of ball valve port sealing more particularly to a kind of end caps of ball valve.

Background technique

Here ball valve refers mainly to polyethylene ball valve, and polyethylene ball valve is going out as the open-close on-off in gas distributing system It requires otherwise to have biggish security risk by air tightness test before factory.Existing ball valve leak test plant is airtight in progress Property test when, often clamp ball valve both ends using the force application apparatus such as cylinder, jack, then be filled with air pressure toward ball valve inner cavity and surveyed Examination, but polyethylene ball valve is plastic material, axially loaded be easy to cause ball valve to deform, influences test result.

Summary of the invention

The present invention can press to ball valve both ends, cause ball to solve existing ball valve leak test plant when testing The problem of valve deformation influences test result, proposes that one kind makes ball valve both ends by axial force, not improve the ball valve sealing of measuring accuracy End cap.

To achieve the goals above, the invention adopts the following technical scheme: a kind of end cap of ball valve, includes at least driving Plate, push plate and sealing cover, the push plate pass through between the driving plate and push plate between driving plate and sealing cover Several connecting rods are fixedly connected, and are connected between the push plate and sealing cover by several first springs;

In horizontal cylindric, sealing cover is equipped with far from its axis of a lateral edge of push plate to be stretched the sealing cover for ball valve adapter tube The preceding socket entered, the bottom surface of the preceding socket, which is run through, is equipped with pressurization aeration aperture, and the opening of preceding socket is equipped with a sealing ring and one Pressure ring, the pressure ring can be translated along the central axis of preceding socket in preceding socket, be equipped in the preceding socket along sealing cover Central axis is in expand the first annular inclined-plane of shape, and it is in expand shape that the left end of the pressure ring, which is equipped with the central axis along pressure ring, Second ring inclined-plane forms sealing for positioning seal ring and in a ring between the first annular inclined-plane and the second annular slope Locating slot is enclosed, the sealing ring is located in sealing ring locating slot, and the front end of pressure ring stretches out in the front end face of sealing cover.

Preferably, the sealing ring is O-ring seal.

Preferably, the aperture of the preceding socket is equal with the internal diameter of pressure ring.

Preferably, the downside of the push plate is equipped with a gas circuit linker, the gas circuit linker includes outside linker Cylinder, linker piston and linker piston rod, in a tubular form, the outer wall and push plate of linker outer cylinder are solid for the linker outer cylinder It is fixed, the central axis of linker outer cylinder and the centerline axis parallel of sealing cover, on linker outer cylinder with preceding socket openings direction one One end of cause is equipped with front end-plate, and the other end is equipped with end plate, offers piston rod through hole, the end plate on the front end-plate It is equipped with air equalizer opening;The linker piston is set in linker outer cylinder and is to be slidingly sealed with the inner wall of linker outer cylinder Cooperation, one end of the linker piston rod are fixed with one end end face of linker piston, and the other end passes through piston rod through hole The outside of linker outer cylinder is stretched in, and is to be slidingly sealed cooperation between linker piston rod and piston rod through hole;Linker is living Piston returning spring is equipped between the other end and end plate of plug;On the linker outer cylinder through inside and outside wall be equipped with linker into Stomata and linker venthole, pressurization of the linker venthole between linker piston and front end-plate and with sealing cover Aeration aperture connection, the linker air inlet is between linker piston and end plate and external air source connects.

Preferably, one end that the linker piston rod is not connect with linker piston is equipped with buffer stopper.

Therefore, sealing is realized the invention has the following beneficial effects: 1, by holding ball valve adapter tube outer wall tightly, ball valve is axial not Stress improves measuring accuracy;2, gas circuit linker is set, after sealing is realized in ball valve port, automatic air entraining, the degree of automation It is high;3, structure is simple, and manufacturing cost is low, easy to operate.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is the structural schematic diagram of another angle of the present invention.

Fig. 3 is cross-sectional view of the invention.

Fig. 4 is the cross-sectional view of linker outer cylinder in the present invention.

Fig. 5 is the overall structure diagram of test mode of the present invention.

Fig. 6 is the partial enlarged view of test mode of the present invention.

Fig. 7 is the partial top view of test mode of the present invention.

Fig. 8 is the cross-sectional view of test mode of the present invention.

1: driving plate;2: push plate;3: sealing cover;4: connecting rod;5: the first springs;6: pressure ring;7: preceding socket;8: sealing Circle;9: first annular inclined-plane;10: the second annular slopes;11: sealing ring locating slot;12: gas circuit linker;13: outside linker Cylinder;14: linker piston;15: piston returning spring;16: linker piston rod;17: linker venthole;18: linker into Stomata;19: front end-plate;20: end plate;21: piston rod through hole;22: air equalizer opening;23: buffer stopper;24: pressurization inflation Hole;25: ball valve;26: positioning frame;27: left positioning seat;28: right positioning seat;29: left limited bayonet;30: right limited bayonet; 31: left polished rod.

Specific embodiment

The present invention will be further described with specific embodiment with reference to the accompanying drawing.

A kind of end cap of ball valve, referring to Fig. 1 to Fig. 8, from front to back successively include sealing cover 3, push plate 2 and driving plate 1, The push plate 2 connects between driving plate 1 and push plate 2 by the way that two connecting rods 4 are fixed between driving plate 1 and sealing cover 3 It connects, passes through two first spring, 5 elastic connections between the push plate 2 and sealing cover 3.

In horizontal cylindric, sealing cover 3 is equipped with far from its axis of a lateral edge of push plate 2 and is used for ball the sealing cover 3 Valve 25 takes over the preceding socket 7 protruded into, and the caliber size of the preceding socket 7 is matched with the outer diameter that ball valve 25 is taken over, before described The bottom surface of socket 7, which is run through, is equipped with pressurization aeration aperture 24, and the opening of preceding socket 7 is equipped with a sealing ring 8 and a pressure ring 6, described close Seal 8 is O-ring seal, and the aperture of the preceding socket 7 is equal with the internal diameter of pressure ring 6, and pressure ring 6 can be in preceding socket 7 along preceding The central axis of socket 7 translates, be equipped in the preceding socket 7 central axis along sealing cover 3 be in expand shape it is first annular tiltedly Face 9, the rear end of the pressure ring 6 is in the second annular slope 10 for expanding shape equipped with the central axis along pressure ring 6, described first annular Sealing ring locating slot 11 for positioning seal ring 8 and in a ring, the sealing are formed between inclined-plane 9 and the second annular slope 10 Circle 8 is located in sealing ring locating slot 11, and the front end of pressure ring 6 stretches out in the front end face of sealing cover 3.

The downside of the push plate 2 be equipped with a gas circuit linker 12, the gas circuit linker 12 include linker outer cylinder 13, Linker piston 14 and linker piston rod 16, the linker outer cylinder 13 in a tubular form, the outer wall of linker outer cylinder 13 and pushing Plate 2 is fixed, the central axis of linker outer cylinder 13 and the centerline axis parallel of sealing cover 3, on linker outer cylinder 13 with preceding socket 7 The consistent one end of opening direction is equipped with front end-plate 19, and the other end is equipped with end plate 20, offers piston rod on the front end-plate 19 Through hole 21, the end plate 20 are equipped with air equalizer opening 22.The linker piston 14 be set to linker outer cylinder 13 in and Inner wall with linker outer cylinder 13 is to be slidingly sealed cooperation, one end of the linker piston rod 16 and the one of linker piston 14 End end face is fixed, and the other end passes through piston rod through hole 21 and stretches in the outside of linker outer cylinder 13, and linker piston rod 16 with It is to be slidingly sealed cooperation between piston rod through hole 21;It is returned between the other end and end plate 20 of linker piston 14 equipped with piston Multiple spring 15;It is equipped with linker air inlet 18 and linker venthole 17 through inside and outside wall on the linker outer cylinder 13, it is described Linker venthole 17 is connected between linker piston 14 and front end-plate 19 and with the pressurization aeration aperture 24 of sealing cover 3, institute Linker air inlet 18 is stated between linker piston 14 and end plate 20 and external air source connects.Under non-test state, even It is not connected between logical device venthole 17 and linker air inlet 18 by the partition of linker piston 14;When linker piston rod 16 by When driving force backward, the linker piston 14 is slidably to the rear side of linker venthole 17, so that linker venthole 17 with linker air inlet 18 to be respectively positioned on linker piston 14 ipsilateral and be connected to.

When test, linker air inlet 18 is connect by tracheae with external air source, by the Spool rotating of ball valve 25 to be measured It is connected on a positioning frame 26 to closed state, then by ball valve 25, the positioning frame 26 includes a left positioning seat 27 With a right positioning seat 28, the left positioning seat and right positioning seat or so are oppositely arranged, and left positioning seat is equipped with for positioning ball The left limited bayonet 29 of the left adapter tube of valve, right positioning seat are equipped with the right limited bayonet 30 for positioning the right adapter tube of ball valve 25;It is described Left limited bayonet and right limited bayonet are the U-shaped card mouth of upward opening, size and the left adapter tube of ball valve 25 of left limited bayonet Outer diameter matching, the size of right limited bayonet are matched with the outer diameter of the left adapter tube of ball valve 25.The left adapter tube of ball valve 25 is clamped On the left limited bayonet of left positioning seat, the right adapter tube of ball valve 25 is connected on the right limited bayonet of right positioning seat.The left positioning Two left polished rods 31 are laterally fixed on the left side of seat 27, two left polished rods 31 are arranged in parallel, the left and right two of the push plate 2 Side is respectively provided with a push plate pilot hole, and two push plate pilot holes are corresponded and are slidably matched with two left polished rods 31, described The left and right sides of sealing cover 3 is respectively provided with a sealing cover pilot hole, and two sealing cover pilot holes and two left polished rods 31 correspond And be slidably matched, push plate and left sealing cover pass through two left polished rods and play guiding role.

The preceding socket 7 of sealing cover 3 pushes driving plate 1 towards ball valve left end end, using power sources such as lead screw motor, cylinders Mobile toward 25 direction of ball valve, in the process of moving, push plate 2 and sealing cover 3 can also move together driving plate 1 with driving plate 1 Dynamic, in 3 moving process of sealing cover, the left adapter tube of ball valve 25 can protrude into the preceding socket 7 of sealing cover 3, and sealing cover 3 continues to move to, pressure 6 leading flank of ring can be contradicted with left 27 left side of positioning seat, at this point, pressure ring 6 stops movement, sealing cover 3 is continued to move to, first annular Spacing between inclined-plane 9 and the second annular slope 10 is gradually reduced, and the sealing ring 8 in sealing ring locating slot 11 is by first annular oblique Face 9 and the second annular slope 10 are pressed against contract, hold the left adapter tube outer wall of ball valve 25 tightly and realize with the left adapter tube outer wall of ball valve 25 Sealing, then, sealing cover 3 also stop movement.Push plate 2 then continues to move to, compress the first spring 5, gas circuit linker 12 also with Push plate 2 continue to move to, during gas circuit linker 12 continues to move to, the front end of linker piston rod 16 also with left positioning The left side of seat 27 contradicts, and linker piston rod 16 and linker piston 14 are blocked stopping and move forward, and linker outer cylinder 13 It is then continued to move to push plate 2, the beginning of piston returning spring 15 is compressed, when linker piston 14 is relative to linker outer cylinder 13 When being moved to linker 17 rear side of venthole, before linker venthole 17 is respectively positioned on linker piston 14 with linker air inlet 18 Side is simultaneously connected to.External air source just can pass sequentially through linker air inlet 18, linker venthole 17 and pressurization aeration aperture 24, most Enter in 25 left chamber of ball valve eventually, increases the air pressure in 25 left chamber of ball valve as measuring air pressure.At this point, operator need to only use it Whether its 25 right end of sealing device seal ball-valve judges ball valve 25 by the air pressure change in the monitoring right adapter tube cavity of ball valve 25 Leakage.When the atmospheric pressure value in the right adapter tube cavity of ball valve 25 constantly increases, illustrate there is gas to pass through 25 valve of ball valve in 25 left chamber of ball valve Core flow to 25 right chamber of ball valve, i.e., the ball valve 25 has leakage;When the atmospheric pressure value in the right adapter tube cavity of ball valve 25 remains unchanged, then say It is flow to 25 right chamber of ball valve without gas in bright 25 left chamber of ball valve, i.e., the ball valve 25 is qualification.

Claims (5)

1. a kind of end cap of ball valve, it is characterised in that: driving plate (1), push plate (2) and sealing cover (3) are included at least, it is described to push away Pressing plate (2) is located between driving plate (1) and sealing cover (3), passes through several connecting rods between the driving plate (1) and push plate (2) (4) it is fixedly connected, passes through several first spring (5) elastic connections between the push plate (2) and sealing cover (3);
In horizontal cylindric, sealing cover (3) is equipped with far from its axis of a lateral edge of push plate (2) and is used for the sealing cover (3) Ball valve (25) takes over the preceding socket (7) protruded into, and the bottom surface of the preceding socket (7), which is run through, is equipped with pressurization aeration aperture (24), preceding socket (7) opening is equipped with a sealing ring (8) and a pressure ring (6), and the pressure ring (6) can be in preceding socket (7) along preceding socket (7) Central axis translation, the central axis being equipped in the preceding socket (7) along sealing cover (3) is in the first annular inclined-plane for expanding shape (9), it is in expand the second annular slope (10) of shape that the left end of the pressure ring (6), which is equipped with the central axis along pressure ring (6), and described the Sealing ring positioning for positioning seal ring (8) and in a ring is formed between one annular slope (9) and the second annular slope (10) Slot (11), the sealing ring (8) are located in sealing ring locating slot (11), and the front end of pressure ring (6) stretches out in the front end of sealing cover (3) Face.
2. a kind of end cap of ball valve according to claim 1, it is characterised in that: the sealing ring (8) is O-ring seal.
3. a kind of end cap of ball valve according to claim 1, it is characterised in that: the aperture of the preceding socket (7) and pressure ring (6) internal diameter is equal.
4. a kind of end cap of ball valve according to claim 1, it is characterised in that: the downside of the push plate (2) is equipped with one Gas circuit linker (12), the gas circuit linker (12) include that linker outer cylinder (13), linker piston (14) and linker are living Stopper rod (16), in a tubular form, the outer wall of linker outer cylinder (13) and push plate (2) are fixed, linker for the linker outer cylinder (13) The centerline axis parallel of the central axis of outer cylinder (13) and sealing cover (3), on linker outer cylinder (13) with preceding socket (7) opening side Front end-plate (19) are equipped with to consistent one end, the other end is equipped with end plate (20), offers piston rod on the front end-plate (19) Through hole (21), the end plate (20) are equipped with air equalizer opening (22);The linker piston (14) is set to outside linker It is to be slidingly sealed cooperation, one end of the linker piston rod (16) and company in cylinder (13) and with the inner wall of linker outer cylinder (13) One end end face of logical device piston (14) is fixed, and the other end passes through piston rod through hole (21) and stretches in the outer of linker outer cylinder (13) Side, and be to be slidingly sealed cooperation between linker piston rod (16) and piston rod through hole (21);Linker piston (14) it is another Piston returning spring (15) are equipped between one end and end plate (20);It is equipped with and connects through inside and outside wall on the linker outer cylinder (13) Logical device air inlet (18) and linker venthole (17), the linker venthole (17) are located at linker piston (14) and front end It is connected between plate (19) and with the pressurization aeration aperture (24) of sealing cover (3), it is living that the linker air inlet (18) is located at linker Between plug (14) and end plate (20) and external air source is connect.
5. a kind of end cap of ball valve according to claim 1, it is characterised in that: the linker piston rod (16) not and even One end of logical device piston (14) connection is equipped with buffer stopper (23).
CN201810960905.1A 2018-08-22 2018-08-22 End cover of ball valve CN109029870B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810960905.1A CN109029870B (en) 2018-08-22 2018-08-22 End cover of ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810960905.1A CN109029870B (en) 2018-08-22 2018-08-22 End cover of ball valve

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CN109029870A true CN109029870A (en) 2018-12-18
CN109029870B CN109029870B (en) 2020-05-29

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CN201810960905.1A CN109029870B (en) 2018-08-22 2018-08-22 End cover of ball valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110220067A (en) * 2019-06-10 2019-09-10 赵桂凤 A kind of sealing pressure maintaining capping of gas ductwork

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739845C1 (en) * 1997-09-11 1999-02-11 Kraewer Hans Peter Gas supply line testing device
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
CN204228344U (en) * 2014-12-12 2015-03-25 杭州戴雷科技有限公司 A kind of end cover mechanism of ball valve air tightness test machine
CN204649358U (en) * 2015-06-02 2015-09-16 宁波市宇华电器有限公司 Ball valve air-tight test end cover mechanism
CN105003713A (en) * 2015-08-11 2015-10-28 宁波恒元精工管阀科技有限公司 Sealing end cover of ball valve
WO2015181609A1 (en) * 2014-05-28 2015-12-03 Dafram S.P.A. Means and methods for detecting leakage in ball valves
CN105181273A (en) * 2015-09-11 2015-12-23 王国良 Ball valve detection equipment
CN106323560A (en) * 2016-09-10 2017-01-11 桐乡市鑫朗智能科技有限公司 Automatic sealing performance testing equipment
CN207502130U (en) * 2017-10-30 2018-06-15 天津永升阀门有限公司 A kind of shut-off valve tightness detector

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739845C1 (en) * 1997-09-11 1999-02-11 Kraewer Hans Peter Gas supply line testing device
WO2015181609A1 (en) * 2014-05-28 2015-12-03 Dafram S.P.A. Means and methods for detecting leakage in ball valves
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
CN204228344U (en) * 2014-12-12 2015-03-25 杭州戴雷科技有限公司 A kind of end cover mechanism of ball valve air tightness test machine
CN204649358U (en) * 2015-06-02 2015-09-16 宁波市宇华电器有限公司 Ball valve air-tight test end cover mechanism
CN105003713A (en) * 2015-08-11 2015-10-28 宁波恒元精工管阀科技有限公司 Sealing end cover of ball valve
CN105181273A (en) * 2015-09-11 2015-12-23 王国良 Ball valve detection equipment
CN106323560A (en) * 2016-09-10 2017-01-11 桐乡市鑫朗智能科技有限公司 Automatic sealing performance testing equipment
CN207502130U (en) * 2017-10-30 2018-06-15 天津永升阀门有限公司 A kind of shut-off valve tightness detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110220067A (en) * 2019-06-10 2019-09-10 赵桂凤 A kind of sealing pressure maintaining capping of gas ductwork

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Effective date of registration: 20200430

Address after: 325024 No. 32 Qiang Road, Yongxing street, Longwan District, Wenzhou, Zhejiang

Applicant after: LIANGGONG VALVE GROUP Co.,Ltd.

Address before: 510000 No. 668, Whampoa Avenue, Tianhe District, Guangdong, Guangzhou

Applicant before: Zou Kai

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