CN114670150A - Special extracting tool of ultra-low temperature upper assembling type ball valve disk seat - Google Patents
Special extracting tool of ultra-low temperature upper assembling type ball valve disk seat Download PDFInfo
- Publication number
- CN114670150A CN114670150A CN202210373439.3A CN202210373439A CN114670150A CN 114670150 A CN114670150 A CN 114670150A CN 202210373439 A CN202210373439 A CN 202210373439A CN 114670150 A CN114670150 A CN 114670150A
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- shaped
- valve seat
- valve
- plunger body
- cavity
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- 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
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- 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
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- 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)
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Abstract
The invention relates to a special disassembling tool for an ultralow-temperature top-mounted ball valve seat, which comprises an I-shaped plunger body, wherein the I-shaped plunger body is inserted into a passage between a valve seat and a valve body from a middle cavity of the valve body; the center of the plane of the disc on one side of the valve cavity of the I-shaped plunger body is provided with an air pressure joint, and the center hole of the air pressure joint is communicated with the annular cavity between the two discs of the I-shaped plunger body. The air pressure is filled into 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, the valve seat and the lip-shaped sealing ring are integrally extruded from the valve seat cavity, the lip-shaped sealing ring is not damaged when being detached, and the reusability is ensured.
Description
Technical Field
The invention relates to a valve seat dismounting tool of an upper-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 does not exist, the leakage hidden danger of the connection part of the valve body connecting flange is avoided, the upper-mounted ball valve also has the characteristics of online disassembly and assembly maintenance and the like, and the upper-mounted ball valve is widely applied to ultra-low temperature pipeline systems. At present, a lip-shaped sealing ring is generally adopted for radial sealing between a valve seat and a valve body of the ultralow-temperature top-mounted ball valve, the lip-shaped sealing ring is made of PTFE (polytetrafluoroethylene) materials, initial sealing is realized by self elasticity as well as an O-shaped sealing ring, the lip-shaped sealing ring also has a pressure self-sealing function, the sealing performance of the lip-shaped sealing ring rises along with the rise of pressure, and the manufacturing cost of the lip-shaped sealing ring is higher. Therefore, when the valve seat sealing surface of the upper-mounted ball valve needs to be replaced after being worn, the lip-shaped sealing ring needs to be maintained not to be damaged and to be reused in the dismounting process. However, when the valve seat is disassembled on line at present, the lip-shaped sealing ring cannot come out along with the valve seat due to friction force and is retained in the valve seat hole, and when the lip-shaped sealing ring is disassembled by the existing tool, the lip-shaped sealing ring is deformed and damaged easily due to uneven force applied to the lip-shaped sealing ring in the circumferential direction by the disassembling tool, and cannot be reused, so that waste is caused.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a special dismounting tool for an ultralow temperature top-mounted ball valve seat, which can dismount a lip-shaped sealing ring and a valve seat into a whole from a valve seat cavity without damage, so that the lip-shaped sealing ring can be repeatedly used.
The invention is realized by the following technical scheme:
the utility model provides a special extracting tool of ultra-low temperature upper assembling type ball valve disk seat which 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, two radial outer circular surfaces of two discs of the I-shaped plunger body are respectively provided with an O-shaped ring, and the O-shaped rings on the two 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 on one side of the valve cavity of the I-shaped plunger body is provided with an air pressure joint, and the center hole of the air pressure joint is communicated with the annular cavity between the two discs of the I-shaped plunger body.
Preferably, the O-shaped ring is of a hollow structure, and the inner cavity of the O-shaped ring is communicated with the central hole of the air pressure joint through a communicating hole.
Compared with the prior art, the invention has the beneficial effects that: the I-shaped plunger body is inserted into a channel between the valve body and the valve seat, air pressure is filled into 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, the valve seat and the lip-shaped sealing ring are integrally extruded from a cavity of the valve seat, the lip-shaped sealing ring is not damaged when being detached, and reusability 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, an O-shaped ring 5, an air pressure joint 6, a central hole 7 and an annular cavity 8.
Detailed Description
The special dismounting tool for the ultralow-temperature top-mounted ball valve seat shown in the figure 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 a valve body 3 from a middle cavity of the valve body 3, two radial outer circular surfaces of two discs of the I-shaped plunger body 4 are respectively provided with an O-shaped ring 5, 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 channel between the valve seat 3 and the two discs of the I-shaped plunger body 4, an annular cavity 8 is formed between the two discs of the I-shaped plunger body 4 and the valve seat 1 and between the two discs of the valve body 3, and the annular cavity 8 is communicated with a valve seat cavity at one end of a lip-shaped sealing ring 2; an air pressure joint 6 is arranged at the center of the plane of the disc of the I-shaped plunger body 4 on one side of the valve cavity, and a central hole 7 of the air pressure joint 6 is communicated with an 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 a channel between the valve seat 1 and the valve body 3, air pressure is input into the annular cavity 8 from the air pressure joint 6, pressure difference is generated at two ends of the valve seat 1, the valve seat 1 and the lip-shaped sealing ring 2 are simultaneously pushed out of the valve seat cavity, and the lip-shaped sealing ring 2 is reused without damage.
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 joint 6 through a communicating 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 to radially expand and is tightly pressed and sealed with the valve seat 1 and the inner wall of the channel of the valve body 3; after the air pressure is removed, the O-shaped ring 5 contracts, so that the I-shaped plunger body 4 is easily arranged in the channel between the valve seat 1 and the valve body 3, and the I-shaped plunger body 4 is also easily taken out from the channel between the valve seat 1 and the valve body 3.
Claims (2)
1. A special dismounting tool for an ultralow-temperature top-mounted ball valve seat comprises an I-shaped plunger body (4), wherein the I-shaped plunger body (4) is mounted in 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 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 disks are respectively in sealing fit with the inner walls of the channel between the valve seat (1) and the channel between the valve seat (3) and the valve body (3), an annular cavity (8) is formed between the two disks of the I-shaped plunger body (4) and the valve seat (1), and the annular cavity (8) is communicated with a valve seat cavity at one end of a lip-shaped sealing ring (2); an air pressure joint (6) is arranged at the center of the plane of the disc on one side of the valve cavity of the I-shaped plunger body (4), and a central hole (7) of the air pressure joint (6) is communicated with an annular cavity between the two discs of the I-shaped plunger body (4).
2. The special removal tool for the ultra-low temperature top-loading type ball valve seat as claimed in claim 1, wherein: 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 joint (6) through a communicating hole.
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 true CN114670150A (en) | 2022-06-28 |
| CN114670150B CN114670150B (en) | 2023-09-05 |
Family
ID=82077770
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)
| Country | Link |
|---|---|
| CN (1) | CN114670150B (en) |
Citations (6)
| 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 |
-
2022
- 2022-04-11 CN CN202210373439.3A patent/CN114670150B/en active Active
Patent Citations (6)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114670150B (en) | 2023-09-05 |
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