CN114670150B - Special extracting tool of ultralow temperature upper assembling type ball valve disk seat - Google Patents

Special extracting tool of ultralow temperature upper assembling type ball valve disk seat Download PDF

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Publication number
CN114670150B
CN114670150B CN202210373439.3A CN202210373439A CN114670150B CN 114670150 B CN114670150 B CN 114670150B CN 202210373439 A CN202210373439 A CN 202210373439A CN 114670150 B CN114670150 B CN 114670150B
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CN
China
Prior art keywords
shaped
valve
valve seat
plunger body
cavity
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Application number
CN202210373439.3A
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Chinese (zh)
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CN114670150A (en
Inventor
尚玉来
金克雨
金瑞建
李平
金卡迪
俞建国
胡兴如
陈安定
肖庆
黄志强
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Zhejiang Bertley Technology Co ltd
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Zhejiang Bertley Technology Co ltd
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Priority to CN202210373439.3A priority Critical patent/CN114670150B/en
Publication of CN114670150A publication Critical patent/CN114670150A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/02—Assembly jigs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The invention relates to a special dismounting tool for an ultralow-temperature upper-mounted ball valve seat, which comprises an I-shaped plunger body, wherein the I-shaped plunger body is inserted into a valve seat and a valve body channel from a valve body middle cavity, O-shaped rings are respectively arranged on the radial outer circular surfaces of two discs of the I-shaped plunger body, and the O-shaped rings on the radial outer circular surfaces of the two discs are respectively in sealing fit with the valve seat and the inner wall of the valve body channel; the center of the plane of the disc, which is positioned at one side of the valve cavity, of the I-shaped plunger body is provided with an air pressure connector, and a center hole of the air pressure connector is communicated with an annular cavity between the two discs of the I-shaped plunger body. Air pressure is filled in a closed annular cavity formed between the I-shaped plunger body, the valve body and the valve seat, the valve seat and the lip-shaped sealing ring are integrally extruded from the valve seat cavity, so that the lip-shaped sealing ring is free from damage when being detached, and the repeated use performance is ensured.

Description

Special extracting tool of ultralow temperature upper assembling type ball valve disk seat
Technical Field
The invention relates to a valve seat dismounting tool of a top-mounted ball valve.
Background
The upper-mounted ball valve has the advantages that the valve body is of an integral structure, the influence of external loads of pipelines such as thermal stress and mechanical stress is avoided, the hidden danger of leakage at the joint of the valve body connecting flange is avoided, meanwhile, the upper-mounted ball valve has the characteristics of on-line disassembly, assembly and maintenance and the like, and the upper-mounted ball valve is widely applied to ultralow-temperature pipeline systems. At present, a lip type sealing ring is generally adopted for radial sealing between a valve seat and a valve body of the ultralow-temperature upper-mounted ball valve, the lip type sealing ring is made of PTFE material, the sealing ring not only has the function of realizing initial sealing by self elasticity like an O type sealing ring, but also has a pressure self-sealing function, the sealing performance of the sealing ring is increased along with the pressure rise, and the manufacturing cost of the sealing ring is higher. Therefore, when the sealing surface of the valve seat of the upper ball valve is worn and needs to be replaced, the lip-shaped sealing ring needs to be kept undamaged for repeated use in the disassembling process. However, when dismantling the disk seat on line at present, lip type sealing washer can not come out together along with the disk seat because of frictional force, is detained in the disk seat downthehole, and when current frock was dismantled lip type sealing washer, because of dismantling the frock and exerting at the inhomogeneous, the easy damage of lip type sealing washer deformation that causes, unable reuse causes the waste.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a special dismounting tool for the ultra-low temperature upper-mounted ball valve seat, which can dismount the lip-shaped sealing ring from the valve seat cavity integrally with the valve seat without damage, so that the lip-shaped sealing ring can be repeatedly used.
The invention is realized by the following technical scheme:
a special extracting tool of ultra-low temperature upper assembling type ball valve disk seat, characterized by: the valve comprises an I-shaped plunger body, wherein the I-shaped plunger body is inserted into a valve seat and a valve body channel from a valve body middle cavity, O-shaped rings are respectively arranged on the radial outer circular surfaces of two discs of the I-shaped plunger body, and the O-shaped rings on the radial outer circular surfaces of the two discs are respectively in sealing fit with the valve seat and the valve body channel inner wall; the center of the plane of the disc, which is positioned at one side of the valve cavity, of the I-shaped plunger body is provided with an air pressure connector, and a center hole of the air pressure connector is communicated with an annular cavity between the two discs of the I-shaped plunger body.
Preferably, the O-shaped ring adopts a hollow structure, and the inner cavity of the O-shaped ring is communicated with the central hole of the pneumatic connector through the communication hole.
Compared with the prior art, the invention has the beneficial effects that: the I-shaped plunger body is inserted into the channel between the valve body and the valve seat, air pressure is filled in a closed annular cavity formed between the I-shaped plunger body and the valve body and between the I-shaped plunger body and the valve seat, and the valve seat and the lip type sealing ring are integrally extruded from the valve seat cavity, so that the lip type sealing ring is free from damage during disassembly, and the repeated use performance is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: the valve comprises a valve seat 1, a lip-shaped sealing ring 2, a valve body 3, an I-shaped plunger body 4, a O-shaped ring 5, a pneumatic connector 6, a central hole 7 and an annular cavity 8.
Detailed Description
The special dismounting tool for the ultralow temperature upper-mounted ball valve seat shown in fig. 1 comprises an I-shaped plunger body 4, wherein the I-shaped plunger body 4 is inserted into a channel between a valve seat 1 and the valve body 3 from a middle cavity of the valve body 3, O-shaped rings 5 are respectively arranged on the radial outer circular surfaces of two discs of the I-shaped plunger body 4, the O-shaped rings 5 on the radial outer circular surfaces of the two discs are respectively in sealing fit with the inner walls of the channel between the valve seat 1 and the valve body 3, an annular cavity 8 is formed between the two discs of the I-shaped plunger body 4 and the valve seat 1 and the valve body 3, and the annular cavity 8 is communicated with a valve seat cavity at one end of a lip type sealing ring 2; the center of the plane of the disc, which is positioned at one side of the valve cavity, of the I-shaped plunger body 4 is provided with an air pressure connector 6, and a central hole 7 of the air pressure connector 6 is communicated with the annular cavity between the two discs of the I-shaped plunger body 4. When the valve seat is disassembled, the I-shaped plunger body 4 is arranged in the channel between the valve seat 1 and the valve body 3, air pressure is input into the annular cavity 8 from the air pressure connector 6, pressure difference is generated at two ends of the valve seat 1, and the valve seat 1 and the lip type sealing ring 2 are pushed out of the valve seat cavity at the same time, so that the lip type sealing ring 2 is used repeatedly without damage.
The O-shaped ring 5 adopts a hollow structure, and the inner cavity of the O-shaped ring is communicated with the central hole 7 of the air pressure connector 6 through a communication hole. When the valve seat 1 is disassembled, air pressure is simultaneously input into the annular cavity 8 and the inner cavity of the O-shaped ring 5, so that the O-shaped ring 5 is inflated and expanded radially to be tightly pressed and sealed with the inner walls of the channels of the valve seat 1 and the valve body 3; after the air pressure is removed, the O-shaped ring 5 is contracted, so that the I-shaped plunger body 4 is easily installed in the channel between the valve seat 1 and the valve body 3, and the I-shaped plunger body 4 is easily taken out of the channel between the valve seat 1 and the valve body 3.

Claims (2)

1. A special extracting tool of ultra-low temperature upper assembling type ball valve disk seat, characterized by: the valve seat comprises an I-shaped plunger body (4), wherein the I-shaped plunger body (4) is arranged in a channel between a valve seat (1) and the valve body (3) from a cavity in the valve body (3), O-shaped rings (5) are respectively arranged on two radial outer circular surfaces of the I-shaped plunger body (4), the O-shaped rings (5) on the two radial outer circular surfaces of the two discs are respectively in sealing fit with the valve seat (1) and the inner wall of the channel of the valve body (3), an annular cavity (8) is formed between the two discs of the I-shaped plunger body (4) and the valve seat (1) and the valve body (3), and the annular cavity (8) is communicated with the valve seat cavity at one end of a lip-shaped sealing ring (2); the center of the plane of the disc, which is positioned at one side of the valve cavity, of the I-shaped plunger body (4) is provided with an air pressure connector (6), and a center hole (7) of the air pressure connector (6) is communicated with an annular cavity between the two discs of the I-shaped plunger body (4).
2. The special dismounting tool for the valve seat of the ultra-low temperature top-mounted ball valve according to claim 1, which is characterized in that: the O-shaped ring (5) adopts a hollow structure, and the inner cavity of the O-shaped ring is communicated with a central hole (7) of the air pressure connector (6) through a communication hole.
CN202210373439.3A 2022-04-11 2022-04-11 Special extracting tool of ultralow temperature upper assembling type ball valve disk seat Active CN114670150B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210373439.3A CN114670150B (en) 2022-04-11 2022-04-11 Special extracting tool of ultralow temperature upper assembling type ball valve disk seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210373439.3A CN114670150B (en) 2022-04-11 2022-04-11 Special extracting tool of ultralow temperature upper assembling type ball valve disk seat

Publications (2)

Publication Number Publication Date
CN114670150A CN114670150A (en) 2022-06-28
CN114670150B true CN114670150B (en) 2023-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210373439.3A Active CN114670150B (en) 2022-04-11 2022-04-11 Special extracting tool of ultralow temperature upper assembling type ball valve disk seat

Country Status (1)

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CN (1) CN114670150B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777624A (en) * 2012-08-17 2012-11-14 慎江阀门有限公司 Mounted online maintenance ball valve
CN104565424A (en) * 2013-10-25 2015-04-29 大丰超威机械有限公司 Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure
CN107747633A (en) * 2017-11-20 2018-03-02 四川飞球（集团）有限责任公司 One kind can dismount top mounting ball valve online
CN212601573U (en) * 2020-03-29 2021-02-26 圣博莱阀门有限公司 Ball valve bottom spring energy storage sealing washer demolishs frock
CN113007379A (en) * 2021-03-01 2021-06-22 浙江伯特利科技股份有限公司 Top-mounted ball valve and assembling tool and process thereof
CN216078382U (en) * 2020-12-31 2022-03-18 湖北泰和石化设备有限公司 Top-mounted ultra-low temperature floating ball valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777624A (en) * 2012-08-17 2012-11-14 慎江阀门有限公司 Mounted online maintenance ball valve
CN104565424A (en) * 2013-10-25 2015-04-29 大丰超威机械有限公司 Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure
CN107747633A (en) * 2017-11-20 2018-03-02 四川飞球（集团）有限责任公司 One kind can dismount top mounting ball valve online
CN212601573U (en) * 2020-03-29 2021-02-26 圣博莱阀门有限公司 Ball valve bottom spring energy storage sealing washer demolishs frock
CN216078382U (en) * 2020-12-31 2022-03-18 湖北泰和石化设备有限公司 Top-mounted ultra-low temperature floating ball valve
CN113007379A (en) * 2021-03-01 2021-06-22 浙江伯特利科技股份有限公司 Top-mounted ball valve and assembling tool and process thereof

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