CN102248356B - Rapid assembly process of integrated high-pressure hard seal ball valve seat - Google Patents
Rapid assembly process of integrated high-pressure hard seal ball valve seat Download PDFInfo
- Publication number
- CN102248356B CN102248356B CN2011101677383A CN201110167738A CN102248356B CN 102248356 B CN102248356 B CN 102248356B CN 2011101677383 A CN2011101677383 A CN 2011101677383A CN 201110167738 A CN201110167738 A CN 201110167738A CN 102248356 B CN102248356 B CN 102248356B
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- valve seat
- valve body
- female cone
- valve
- shrinkage
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Abstract
The invention relates to a rapid assembly process of an integrated high-pressure hard seal ball valve seat, which is characterized by comprising the steps of: A, possessing a splicing part of a valve body into a female cone; B, processing the periphery of a plug-in end of the valve seat into a cylinder in interference fit with the female cone of the valve body; C, carrying out cold shrink treatment on the valve seat; D, inserting the cylinder of the cold-shrunk valve seat in the female cone of the valve body; and E, raising the temperature and forming interference sealing fit between the heat-expanded valve seat and the female cone of the valve body. By means of the process provided by the invention, the defects that a traditional method for assembling the valve seat of a ball valve has high labor intensity and low production efficiency and the phenomena that the valve seat is slantingly pressed or not pressed in place are easy to appear in the prior art are overcome; through the concrete process design, the cold-shrunk valve seat is taken out and can be directly put into the valve body and the product assembly qualified rate is more than 99% to ensure that the product quality and the production efficiency are effectively increased and the labor intensity of workers is reduced; and the process has the advantages of simplicity, convenience and rapidness in operation, accuracy in positioning the valve seat and reliability in sealing.
Description
Technical field
The present invention relates to a kind of quick packaging technology of integral type high pressure hard seal ball valve base.
Background technology
Ball valve is widely used in the control element of making pipeline fluid in the various career fields, and it is little that ball valve has fluid resistance, opens and closes rapidly the better simply advantage of structure.In the production and assembly process of ball valve; The assembling of valve seat and valve body is that the method that adopts hydraulic press to be pressed into is accomplished; And the significant defective of this process that to be valve seat occur being pressed easily is askew, press quality problems such as not in place, make the valve rod location inaccurate, produce during pressure testing and leak; According to measuring and calculating, the ratio that above-mentioned quality problems occur is more than 10%.In addition, valve body is brought up on the hydraulic press workbench and is moved down, and not only labour intensity is big, production efficiency is low, and is prone to security incident.
Summary of the invention
Big for the valve seat assembly method labour intensity that overcomes conventional ball valve in the prior art, production efficiency is low; And occur easily valve seat askew by pressing, press problem not in place; The present invention provides a kind of quick packaging technology of integral type high pressure hard seal ball valve base; The quick packaging technology of this integral type high pressure hard seal ball valve base simple and efficient to handle, the valve seat accurate positioning, sealing is reliable.
The technical solution adopted for the present invention to solve the technical problems is to comprise following operation:
A, female cone is processed in the Plug Division of valve body;
B, valve seat insertion end periphery is processed into the cylinder with valve body female cone interference fit;
C, valve seat is carried out shrinkage handle;
D, the cylinder of the valve seat after the shrinkage inserted the female cone of valve body;
Female cone formation interference with valve body after E, intensification, valve seat heat are risen is sealed and matched.
The tapering of valve body female cone is 2 ° ~ 5 °, and valve seat shrinkage temperature range is-90 ℃ ~-60 ℃, and the valve seat shrinkage time is 2 ~ 5 minutes.
The tapering of valve body female cone is 3 °, shrinkage temperature-78 ℃, and the shrinkage time is 3 minutes.
Shrinkage is handled in liquid nitrogen frozen case or dry ice add the mixture of alcohol and is carried out.
The present invention is through above-mentioned concrete technological design; Valve seat after the shrinkage completion is taken out the valve body of can directly packing into, and the product packaging qualification rate reaches more than 99%, has effectively improved product quality and production efficiency; Reduced working strength of workers; Have simple and efficient to handle, valve seat accurate positioning, reliable sealing advantage.
The specific embodiment
The operation of packaging technology of the present invention comprises:
A, female cone is processed in the Plug Division of valve body; The female cone of valve body of the present invention; Weld the welding stress that brings and produce the situation of strain taking into full account stress and the building site pipe arrangement that the valve outlet end will bear the import and the big temperature difference of outlet; After a large amount of tests, confirm that finally the tapering of valve body female cone is between 2 ° ~ 5 °, the best is 3 °; B, valve seat insertion end periphery is processed into the cylinder with valve body female cone interference fit, wants rationally preferred circular cone during the cylinder production and processing directly through interference use level T
DF and finished surface precision; C, valve seat is carried out shrinkage handle; Valve seat shrinkage temperature range is-90 ℃ ~-60 ℃, and best shrinkage temperature is-78 ℃, and the valve seat shrinkage time is 2 ~ 5 minutes; The best shrinkage time is 3 minutes; Shrinkage is handled in liquid nitrogen frozen case or dry ice add the mixture of alcohol and is carried out, and can certainly be other shrinkage method, and what adopt in the present embodiment is the mixture that dry ice adds alcohol; D, the cylinder of the valve seat after the shrinkage inserted the female cone of valve body; Female cone formation interference with valve body after E, intensification, valve seat heat are risen is sealed and matched, and accomplishes assembling, and above-mentioned temperature-rise period can be the nature intensification.Female cone and cylindrical interference fit have satisfied the needs of outlet thermal (temperature difference) stress and welding stress release, have guaranteed the leak free sealing property of the port of export.Valve seat after the shrinkage completion is taken out the valve body of can directly packing into; The qualification rate of its product assembling reaches more than 99%; Effectively improved product quality and production efficiency, reduced working strength of workers, above-described embodiment describes the preferred implementation of the quick packaging technology of integral type high pressure hard seal ball valve base of the present invention; Be not that the design and the scope of inventing limited; Under the prerequisite that does not break away from the present invention program, various external form modification and improvement that those skilled in the art make technical scheme of the present invention all should fall into the protection domain of the quick packaging technology of integral type high pressure hard seal ball valve base of the present invention.
Claims (4)
1. the quick packaging technology of an integral type high pressure hard seal ball valve base is characterized in that its operation comprises:
A, female cone is processed in the Plug Division of valve body;
B, valve seat insertion end periphery is processed into the cylinder with valve body female cone interference fit;
C, valve seat is carried out shrinkage handle;
D, the cylinder of the valve seat after the shrinkage inserted the female cone of valve body;
Female cone formation interference with valve body after E, intensification, valve seat heat are risen is sealed and matched.
2. the quick packaging technology of integral type high pressure hard seal ball valve base according to claim 1, the tapering that it is characterized in that the valve body female cone are 2 ° ~ 5 °, and valve seat shrinkage temperature range is-90 ℃ ~-60 ℃, and the valve seat shrinkage time is 2 ~ 5 minutes.
3. the quick packaging technology of integral type high pressure hard seal ball valve base according to claim 2, the tapering that it is characterized in that the valve body female cone is 3 °, shrinkage temperature-78 ℃, the shrinkage time is 3 minutes.
4. according to the quick packaging technology of claim 1 or 2 or 3 described integral type high pressure hard seal ball valve bases, it is characterized in that shrinkage is handled in liquid nitrogen frozen case or dry ice add the mixture of alcohol carries out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101677383A CN102248356B (en) | 2011-06-21 | 2011-06-21 | Rapid assembly process of integrated high-pressure hard seal ball valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101677383A CN102248356B (en) | 2011-06-21 | 2011-06-21 | Rapid assembly process of integrated high-pressure hard seal ball valve seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248356A CN102248356A (en) | 2011-11-23 |
| CN102248356B true CN102248356B (en) | 2012-11-21 |
Family
ID=44976114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101677383A Expired - Fee Related CN102248356B (en) | 2011-06-21 | 2011-06-21 | Rapid assembly process of integrated high-pressure hard seal ball valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102248356B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661123A (en) * | 2012-05-03 | 2012-09-12 | 西南石油大学 | High-temperature resistant floating sealing device for cone bit |
| CN102672414A (en) * | 2012-06-05 | 2012-09-19 | 中国南方航空工业(集团)有限公司 | Method for combining cylinder head and cylinder barrel |
| JP2017517399A (en) * | 2014-03-14 | 2017-06-29 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Composite roll |
| CN105508332A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Assembly technical method of mode selecting valve based on interference fit seal |
| CN104476104B (en) * | 2014-11-17 | 2017-01-04 | 南通龙源电站阀门有限公司 | A kind of ball seat hot jacket connects technique |
| CN110695658A (en) * | 2019-10-23 | 2020-01-17 | 江苏神通阀门股份有限公司 | Assembly process for valve seat of track ball valve |
| CN111765254A (en) * | 2020-06-16 | 2020-10-13 | 河南陶恩机械有限公司 | Liquid nitrogen cold-charging valve seat structure of gray iron stop valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3768880D1 (en) * | 1986-08-12 | 1991-05-02 | Balcke Duerr Ag | METHOD AND DEVICE FOR FASTENING PARTS ON A HOLLOW BODY. |
| CN1206620A (en) * | 1997-07-29 | 1999-02-03 | 麦得氏企业有限公司 | Freezing joint method for heterometal golf driver head |
| ITTO20010666A1 (en) * | 2001-07-10 | 2003-01-10 | Gevipi Ag | CARTRIDGE FOR HYDRAULIC EQUIPMENT AND PROCEDURE FOR ITS INSTRUMENTAL ASSEMBLY. |
| CN100596286C (en) * | 2006-11-24 | 2010-03-31 | 株洲时代新材料科技股份有限公司 | Subassembly of buttonhead of car distance rod and sheath, and assembling technique |
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2011
- 2011-06-21 CN CN2011101677383A patent/CN102248356B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102248356A (en) | 2011-11-23 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20170621 |