CN204647714U - Ball valve test sealing mechanism - Google Patents

Ball valve test sealing mechanism Download PDF

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Publication number
CN204647714U
CN204647714U CN201520374551.4U CN201520374551U CN204647714U CN 204647714 U CN204647714 U CN 204647714U CN 201520374551 U CN201520374551 U CN 201520374551U CN 204647714 U CN204647714 U CN 204647714U
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CN
China
Prior art keywords
rear end
ball valve
front cover
end cover
slide
Prior art date
Application number
CN201520374551.4U
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Chinese (zh)
Inventor
孙兆儿
Original Assignee
宁波市宇华电器有限公司
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Publication date
Application filed by 宁波市宇华电器有限公司 filed Critical 宁波市宇华电器有限公司
Priority to CN201520374551.4U priority Critical patent/CN204647714U/en
Application granted granted Critical
Publication of CN204647714U publication Critical patent/CN204647714U/en

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Abstract

The utility model discloses a kind of ball valve test sealing mechanism, when being intended to overcome ball valve air tightness test of the prior art, the deficiency of plugging structure installing/dismounting inconvenience.It comprises columniform front cover, columniform rear end cover, center pillar, limiting board, the slide of frustoconic shape, elastic seal ring and positioning plate, center pillar one end vertically connects the center of circle of front cover, the other end vertically connects the center of circle of rear end cover, be provided with the air filling and exhausting hole running through front cover, center pillar and front cover in center pillar, rear end cover is by some connecting rod connected positioning plates; Slide to be coaxially slidably located on center pillar and between front cover and rear end cover.The beneficial effects of the utility model are: (1) stretches formula end cover designs in adopting improves shutoff sealing effect, ensures testing precision; (2) easy installation and removal between sealing mechanism and ball valve, carries and does air-leakage test efficiency; (3) temperature transducer is provided with, when facilitating control and measuring, the temperature variation in ball valve.

Description

Ball valve test sealing mechanism

Technical field

The utility model relates to ball valve air tightness test field, particularly relates to a kind of block head for ball valve air tightness test machine.

Background technique

Ball valve makes open-shut device with the spheroid of band manhole, and spheroid rotates with valve rod, to realize the valve of switching motion.Ball valve is mainly used as cut-out, distributes and change the flow direction of medium.Before ball valve uses, require with pressurized gas to be that medium carries out experiments of sealing performance.

When prior art is tested ball valve, usual employing sealing gasket or seal ring are placed in the outside of ball valve two ends fitting structure, join with work feeders such as the cylinders of air tightness test machine simultaneously and be clamped in ball valve two ends with structures such as clamping plate, 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.The program has the following disadvantages: lack special ball valve plugging mechanism, and ball valve plugging operations process is complicated, and the sealing contact surface of plugging structure is end face or the outer surface of fitting structure, and structure precision is not high, causes sealing effect poor; And sealing configuration dismounting also comparatively inconvenience after a test article has detected, again need to reinstall sealing gasket or seals and other component during test, be difficult to carry out high-efficiency and continuous test, and have impact on test efficiency.

Model utility content

When the utility model is to overcome ball valve air tightness test of the prior art, plugging mechanism sealing effect is poor, and the deficiency of installing/dismounting inconvenience, provide and can realize quick blocking and dismounting, effectively improve a kind of ball valve test sealing mechanism of ball valve air-leakage test efficiency.

To achieve these goals, the utility model is by the following technical solutions:

A kind of ball valve test sealing mechanism of the present utility model, comprise columniform front cover, columniform rear end cover, center pillar, limiting board, the slide of frustoconic shape, elastic seal ring and positioning plate, center pillar one end vertically connects the center of circle of front cover, the other end vertically connects the center of circle of rear end cover, be provided with the air filling and exhausting hole running through front cover, center pillar and rear end cover in center pillar, rear end cover is by some connecting rod connected positioning plates; Slide to be coaxially slidably located on center pillar and between front cover and rear end cover, slide is greater than the diameter of the one end near rear end cover near one end diameter of front cover, slide connects limiting board near one end of rear end cover by some slide bars through rear end cover, slide bar is arranged with spring, and both ends of the spring connects limiting board and rear end cover respectively; Front cover rear edge and rear end cover front edge ring week are provided with clamping protruding, elastic seal ring is set in slide side, the clamping projection clamping elastic seal ring on front cover and rear end cover.

The utility model is arranged on the work feeders such as the cylinder of air tightness test machine by positioning plate.When detecting, the work feeder of air tightness test machine advances to the fitting structure at ball valve two ends, make the structures such as rear end cover, center pillar and front cover push the fitting structure at ball valve two ends, promote slide slide and center pillar are synchronized with the movement by spring traction limiting board simultaneously.After feeding puts in place, limiting board is subject to the position-limiting action of fitting structure end face and static, now the relative center pillar of slide moves backward, its side struts elastic seal ring from inside, make elastic seal ring outer rim near the inwall of ball valve two ends fitting structure and forward and backward end cap, four clamp elastic seal ring, realize the shutoff to ball valve.Then by air filling and exhausting hole, air-leakage test test is started to inflation in ball valve.After having tested, work feeder oppositely reclaims, and elastic packing loop-shaped is recovered and depressurization effect, and now between mechanism and ball valve, frictional force weakens and just can mechanism be regained easily.Thus realize quick mounting and the dismounting of tightness plugging structure, greatly improve the efficiency of air tightness test.And sealing station is positioned at the inwall of fitting structure, general machining accuracy is higher herein, ensures better sealing effect.

As preferably, be provided with limited step along the apical margin of slide frustoconic shape texture edge and root edge.Limited step can prevent elastic seal ring from coming off from round platform seat.

As preferably, when spring is positioned at free length, the inside edge of elastic seal ring is near the less one end of slide diameter.When such structure can ensure that slide and center pillar are synchronized with the movement, elastic seal ring is not softened, can not lean fitting structure inwall and frictional force is increased, and causes mechanism's feeding difficulty.

As preferably, front cover is provided with away from center pillar one side end face the temperature transducer that is measured cavity temperature in ball valve.When facilitating control and measuring, the temperature variation in ball valve.

As preferably, front cover and rear end cover equal diameters, limiting board shape is for for disc and diameter is greater than front cover diameter.

The beneficial effects of the utility model are: (1) stretches formula end cover designs in adopting improves shutoff sealing effect, ensures testing precision; (2) easy installation and removal between sealing mechanism and ball valve, carries and does air-leakage test efficiency; (3) temperature transducer is provided with, when facilitating control and measuring, the temperature variation in ball valve.

Accompanying drawing explanation

Fig. 1 is cross-sectional schematic of the present utility model.

Fig. 2 is the cross-sectional schematic of the utility model sealed condition.

In figure: 1 front cover; 11 air filling and exhausting holes; 12 connecting rods; 13 clampings are protruding; 2 rear end covers; 3 center pillars; 4 limiting boards; 5 slides; 51 slide bars; 52 springs; 53 limited steps; 6 elastic seal rings; 7 positioning plates; 8 temperature transducers; 9 fitting structures; 10 work feeders.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

As shown in Figure 1, a kind of ball valve test sealing mechanism of the present utility model, comprise columniform front cover 1, columniform rear end cover 2, center pillar 3, limiting board 4, the slide 5 of frustoconic shape, elastic seal ring 6 and positioning plate 7, center pillar 3 one end vertically connects the center of circle of front cover 1, the other end vertically connects the center of circle of rear end cover 2, be provided with the air filling and exhausting hole 11 running through front cover 1, center pillar 3 and rear end cover 2 in center pillar 3, rear end cover 2 is by some connecting rod 12 connected positioning plates 7; Slide 5 to be coaxially slidably located on center pillar 3 and between front cover 1 and rear end cover 2, slide 5 is greater than the diameter of the one end near rear end cover 2 near one end diameter of front cover 1, slide 5 connects limiting board 4 near one end of rear end cover 2 by some slide bars 51 through rear end cover 2, slide bar 51 is arranged with spring 52, spring 52 two ends connect limiting board 4 and rear end cover 2 respectively; Front cover 1 rear edge and rear end cover 2 front edge ring week are provided with clamping protruding 13, and elastic seal ring 6 is set in slide 5 side, the protruding 13 clamping elastic seal rings 6 of clamping on front cover 1 and rear end cover 2.

Front cover 1 and rear end cover 2 equal diameters, limiting board 4 shape is for disc and diameter is greater than front cover 1 diameter.

Front cover 1 is provided with away from center pillar 3 one side end face the temperature transducer 8 that is measured cavity temperature in ball valve.When facilitating control and measuring, the temperature variation in ball valve.

Limited step 53 is provided with along the apical margin of slide 5 frustoconic shape texture edge and root edge.Limited step 53 can prevent elastic seal ring 6 from coming off from round platform seat.When spring 52 is positioned at free length, the inside edge of elastic seal ring 6 is near the less one end of slide 5 diameter.When such structure can ensure that slide 5 and center pillar 3 are synchronized with the movement, elastic seal ring 6 is not softened, can not lean fitting structure 9 inwall and frictional force is increased, and causes mechanism's feeding difficulty.

As shown in Figure 2, the utility model is arranged on by positioning plate 7 on the work feeders 10 such as the cylinder of air tightness test machine.Work feeder 10 is herein related domain common technology, does not repeat them here.When detecting, the work feeder 10 of air tightness test machine advances to the fitting structure 9 at ball valve two ends, make the structures such as rear end cover 2, center pillar 3 and front cover 1 push the fitting structure 9 at ball valve two ends, draw limiting board 4 by spring 52 simultaneously and promote slide 5 slide 5 and center pillar 3 are synchronized with the movement.After feeding puts in place, limiting board 4 is subject to the position-limiting action of fitting structure 9 end face and static, now the relative center pillar 3 of slide 5 moves backward, its side struts elastic seal ring 6 from inside, make elastic seal ring 6 outer rim near the inwall of ball valve two ends fitting structure 9 and forward and backward end cap, four clamp elastic seal ring 6, realize the shutoff to ball valve.Then air-leakage test test is started by inflation in air filling and exhausting hole 11 pairs of ball valves.After having tested, work feeder oppositely reclaims, and elastic seal ring 6 shape is recovered and depressurization effect, and now between mechanism and ball valve, frictional force weakens and just can mechanism be regained easily.Thus realize quick mounting and the dismounting of tightness plugging structure, greatly improve the efficiency of air tightness test.

Claims (5)

1. a ball valve test sealing mechanism, it is characterized in that, comprise columniform front cover, columniform rear end cover, center pillar, limiting board, the slide of frustoconic shape, elastic seal ring and positioning plate, center pillar one end vertically connects the center of circle of front cover, the other end vertically connects the center of circle of rear end cover, be provided with the air filling and exhausting hole running through front cover, center pillar and rear end cover in center pillar, rear end cover is by some connecting rod connected positioning plates; Slide to be coaxially slidably located on center pillar and between front cover and rear end cover, slide is greater than the diameter of the one end near rear end cover near one end diameter of front cover, slide connects limiting board near one end of rear end cover by some slide bars through rear end cover, slide bar is arranged with spring, and both ends of the spring connects limiting board and rear end cover respectively; Front cover rear edge and rear end cover front edge ring week are provided with clamping protruding, elastic seal ring is set in slide side, the clamping projection clamping elastic seal ring on front cover and rear end cover.
2. ball valve test sealing mechanism according to claim 1, is characterized in that, is provided with limited step along the apical margin of slide frustoconic shape texture edge and root edge.
3. ball valve test sealing mechanism according to claim 1 and 2, is characterized in that, when spring is positioned at free length, the inside edge of elastic seal ring is near the less one end of slide diameter.
4. ball valve test sealing mechanism according to claim 1 and 2, is characterized in that, front cover is provided with away from center pillar one side end face the temperature transducer that is measured cavity temperature in ball valve.
5. ball valve test sealing mechanism according to claim 1 and 2, is characterized in that, front cover and rear end cover equal diameters, and limiting board shape is for disc and diameter is greater than front cover diameter.
CN201520374551.4U 2015-06-02 2015-06-02 Ball valve test sealing mechanism CN204647714U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520374551.4U CN204647714U (en) 2015-06-02 2015-06-02 Ball valve test sealing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520374551.4U CN204647714U (en) 2015-06-02 2015-06-02 Ball valve test sealing mechanism

Publications (1)

Publication Number Publication Date
CN204647714U true CN204647714U (en) 2015-09-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520374551.4U CN204647714U (en) 2015-06-02 2015-06-02 Ball valve test sealing mechanism

Country Status (1)

Country Link
CN (1) CN204647714U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547598A (en) * 2015-12-22 2016-05-04 中国计量学院 Valve end surface sealing mechanism
CN105571787A (en) * 2015-12-22 2016-05-11 中国计量学院 PE ball valve port sealing mechanism
CN105651461A (en) * 2015-12-22 2016-06-08 中国计量学院 Internally-stretched sealed valve test machine
CN106768650A (en) * 2016-12-14 2017-05-31 贵州红林机械有限公司 A kind of valve pressure analogue experiment installation and application method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547598A (en) * 2015-12-22 2016-05-04 中国计量学院 Valve end surface sealing mechanism
CN105571787A (en) * 2015-12-22 2016-05-11 中国计量学院 PE ball valve port sealing mechanism
CN105651461A (en) * 2015-12-22 2016-06-08 中国计量学院 Internally-stretched sealed valve test machine
CN105571787B (en) * 2015-12-22 2017-09-29 中国计量大学 A kind of port sealing mechanism of PE ball valves
CN105547598B (en) * 2015-12-22 2017-09-29 中国计量大学 A kind of valve end sealing mechanism
CN105651461B (en) * 2015-12-22 2017-11-07 中国计量大学 The sealed valve-testing machine of formula is stretched in one kind
CN106768650A (en) * 2016-12-14 2017-05-31 贵州红林机械有限公司 A kind of valve pressure analogue experiment installation and application method

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