CN102748519A - Novel high-pressure large-diameter fully-welded ball valve - Google Patents
Novel high-pressure large-diameter fully-welded ball valve Download PDFInfo
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- CN102748519A CN102748519A CN2012102352612A CN201210235261A CN102748519A CN 102748519 A CN102748519 A CN 102748519A CN 2012102352612 A CN2012102352612 A CN 2012102352612A CN 201210235261 A CN201210235261 A CN 201210235261A CN 102748519 A CN102748519 A CN 102748519A
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Abstract
The invention relates to a novel high-pressure large-diameter fully-welded ball valve, which comprises a left valve body, a right valve body, an emergency sealing and grease injection device connected with flange sides of the left valve body and the right valve body, an intermediate valve body, a ball body and a valve seat body. The ball body and the valve seat body are arranged in the intermediate valve body, and the opposite surfaces of the left valve body and the right valve body are provided with heat-conduction blocking slots. The valve seat body and the ball body form a seal through a four-stage sealing structure. In the specific scheme, the metal contact seal of the valve seat body and the ball body is a first-stage seal; PTFE (polytetrafluoroethylene) and carbon fiber materials are embedded in a slot of the valve seat body to form a second-stage seal; a triangular sealing ring is adopted as a third-stage seal; and the emergency sealing and grease injection device forms a fourth-stage seal. According to the four-stage sealing structure disclosed by the invention, the sealing performance of the valve can be ensured more reliably, and the service life of the valve can be prolonged. Moreover, since the opposite surfaces of the left valve body and the right valve body are provided with the two slots, heat conduction can be effectively blocked during butt welding, the valve seat can be prevented from being heated and deformed to be stuck with the ball body, and thus a major problem of welding can be solved.
Description
Technical field
The invention belongs to technical field of valve manufacturing, relate to a kind of valve that is used for the rock gas long-distance transport pipes, be specifically related to a kind of novel high-pressure heavy caliber all-welded ball valve that is suitable for sulfur-containing gas long-distance transport pipes project.
Background technique
The welding process of all-welded ball valve is a critical process, and welding process is after the product assembling, to carry out, and is last procedure, no longer allows dismounting after the welding.So the prediction of Temperature Field in Welding and control; The prediction of welding process axial deformation, radial deformation and control; The control of welding process residual stress etc. all is the problem that needs solution, general a kind of automation welding method, the optimization welding procedure selected in the existing technology; Comprise the selection of mother metal, welding wire, solder flux; The optimization of welding parameter, and welding procedure evaluation solved the problems referred to above, still; Owing to do not block the structure of heat conduction in the welding process effectively, often have valve seat temperature distortion in the welding process and the problem of locking spheroid.
Summary of the invention
The present invention provides a kind of novel high-pressure heavy caliber all-welded ball valve that is applicable to that sulfur-containing gas long-distance transport pipes project is used; Not only overcome all-welded ball valve valve seat temperature distortion and problem of locking spheroid in welding process, and had reliable sealing effect more.
The technological scheme that is adopted is: a kind of novel high-pressure heavy caliber all-welded ball valve; Comprise left and right valve body and the urgent sealing grease filler that is connected with its flange sidepiece; Middle valve body and the spheroid and the valve seat pedestal that are arranged in the middle valve body have the blocking-up thermal trough on the opposing side of said left and right valve body.
Said valve seat pedestal forms sealing through quadruple sealing configuration and said spheroid, and this quadruple sealing configuration is specially: the Metal Contact of said valve seat pedestal and spheroid itself is sealed into first order sealing; Be processed with groove on the said valve seat pedestal, inlay the PTFE+ carbon fibre material in this groove and form second level sealing; The third level is sealed into delta-ring, and this trigonometric form seal ring is pressed on the valve seat pedestal with the valve seat pressure ring, and this valve seat pressure ring is fixed on the valve seat pedestal; The 4th road is sealed into described urgent greasing seal arrangement.
Quadruple sealing of the present invention has guaranteed the sealability of valve more reliably, has prolonged the working life of valve.Because middle valve body in the described all-welded ball valve and left and right valve body are welded through the butt weld of narrow gap groove; So the twice groove that on described left and right valve body opposing side, has is used in the intercept heat conduction effectively of butt welding process; The locking spheroid to prevent the valve seat temperature distortion has solved a great problem of welding.
Description of drawings
Fig. 1 is a left side of the present invention cross-sectional view.
Embodiment
Below in conjunction with accompanying drawing the present invention and beneficial effect thereof are done further detailed explanation.
With reference to figure 1, a kind of novel high-pressure heavy caliber all-welded ball valve comprises left valve barrel 4 and the urgent sealing grease filler 10 that is connected with its flange sidepiece; Helical spring 3 and valve seat pedestal 2 are housed in the said left valve barrel 4; Dunnage 6 and spheroid 1 are housed in the valve body 7 in described, have blocking-up thermal trough 9 on the opposing side of said left and right valve body, this groove is provided with twice; Be used at the intercept heat conduction effectively of butt welding process, locking spheroid to prevent the valve seat temperature distortion.
Said valve seat pedestal 2 forms sealing through quadruple sealing configuration and said spheroid 1, and this quadruple sealing configuration is specially: the Metal Contact of said valve seat pedestal 2 and spheroid itself is sealed into the sealing of first road; Be processed with groove on the said valve seat pedestal 2, inlay the PTFE+ carbon fibre material in this groove and form second road sealing 11; Three seals is a delta-ring 13, and these trigonometric form seal ring 13 usefulness valve seat pressure rings 14 are pressed on the valve seat pedestal 2, and these valve seat pressure ring 14 screw are on valve seat pedestal 2; The 4th road is sealed into described urgent greasing seal arrangement 10; Be not close to the sphere of spheroid 1 and play seal action there being under the situation of medium elastic force through helical spring 3 push valve seat pedestal 2 to spheroid 1.
Right half part sectional drawing of the present invention and said accompanying drawing 1 be symmetry fully.
Above-described only is preferred embodiment of the present invention.Should be understood that those of ordinary skill, under teachings provided by the present invention, can also make other equivalent variations and improvement, also should be regarded as protection scope of the present invention for valve technology field.
Claims (2)
1. novel high-pressure heavy caliber all-welded ball valve; Comprise left and right valve body and the urgent sealing grease filler that is connected with its flange sidepiece; Middle valve body and the spheroid and the valve seat pedestal that are arranged in the middle valve body is characterized in that: have blocking-up thermal trough (9) on the opposing side of said left and right valve body.
2. a kind of novel high-pressure heavy caliber all-welded ball valve according to claim 1 is characterized in that:
Said valve seat pedestal (2) forms sealing through quadruple sealing configuration and said spheroid (1), and this quadruple sealing configuration is specially: the Metal Contact of said valve seat pedestal (2) and spheroid itself is sealed into first order sealing; Be processed with groove on the said valve seat pedestal (2), inlay the PTFE+ carbon fibre material in this groove and form second level sealing (11); The third level is sealed into delta-ring (13), and this trigonometric form seal ring (13) is pressed on the valve seat pedestal (2) with valve seat pressure ring (14), and this valve seat pressure ring (14) is fixed on the valve seat pedestal (2); The 4th road is sealed into described urgent greasing seal arrangement (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102352612A CN102748519A (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter fully-welded ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102352612A CN102748519A (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter fully-welded ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748519A true CN102748519A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102352612A Pending CN102748519A (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter fully-welded ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102748519A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982673A (en) * | 2014-05-29 | 2014-08-13 | 昆山维萨阀门有限公司 | All-welded ball valve |
| CN104197012A (en) * | 2014-09-10 | 2014-12-10 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN104728466A (en) * | 2015-02-01 | 2015-06-24 | 江苏诚功阀门科技有限公司 | High-performance non-leakage ball valve for natural gas transmission |
| CN105003681A (en) * | 2015-07-13 | 2015-10-28 | 昆山维萨阀门有限公司 | All-welded shell ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0027765A1 (en) * | 1979-10-23 | 1981-04-29 | Jean Gachot | Ball-valve and processes for its manufacture |
| CN201129496Y (en) * | 2007-07-26 | 2008-10-08 | 上海凯工阀门有限公司 | Upper mounting type ball valve |
| CN101608694A (en) * | 2009-07-20 | 2009-12-23 | 浙江石化阀门有限公司 | Ultra-temperature high-pressure stop valve |
| CN201606529U (en) * | 2010-01-08 | 2010-10-13 | 科福龙阀门集团有限公司 | Butt welding ball valve provided with welding stress release groove |
| CN102242812A (en) * | 2010-05-14 | 2011-11-16 | 蔡毅 | Upper-mounting-type hydraulic ball valve |
| CN202187947U (en) * | 2011-08-13 | 2012-04-11 | 苏州敏喆机械有限公司 | Vertical pump seat |
| CN202646855U (en) * | 2012-07-09 | 2013-01-02 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter all-welded ball valve |
-
2012
- 2012-07-09 CN CN2012102352612A patent/CN102748519A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0027765A1 (en) * | 1979-10-23 | 1981-04-29 | Jean Gachot | Ball-valve and processes for its manufacture |
| CN201129496Y (en) * | 2007-07-26 | 2008-10-08 | 上海凯工阀门有限公司 | Upper mounting type ball valve |
| CN101608694A (en) * | 2009-07-20 | 2009-12-23 | 浙江石化阀门有限公司 | Ultra-temperature high-pressure stop valve |
| CN201606529U (en) * | 2010-01-08 | 2010-10-13 | 科福龙阀门集团有限公司 | Butt welding ball valve provided with welding stress release groove |
| CN102242812A (en) * | 2010-05-14 | 2011-11-16 | 蔡毅 | Upper-mounting-type hydraulic ball valve |
| CN202187947U (en) * | 2011-08-13 | 2012-04-11 | 苏州敏喆机械有限公司 | Vertical pump seat |
| CN202646855U (en) * | 2012-07-09 | 2013-01-02 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter all-welded ball valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982673A (en) * | 2014-05-29 | 2014-08-13 | 昆山维萨阀门有限公司 | All-welded ball valve |
| CN104197012A (en) * | 2014-09-10 | 2014-12-10 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN104197012B (en) * | 2014-09-10 | 2017-01-18 | 苏州纽威阀门股份有限公司 | Steel forging valve and sealing connecting structure applicable to steel forging valve |
| CN104728466A (en) * | 2015-02-01 | 2015-06-24 | 江苏诚功阀门科技有限公司 | High-performance non-leakage ball valve for natural gas transmission |
| CN105003681A (en) * | 2015-07-13 | 2015-10-28 | 昆山维萨阀门有限公司 | All-welded shell ball valve |
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Application publication date: 20121024 |