CN202646855U - Novel high-pressure large-diameter all-welded ball valve - Google Patents
Novel high-pressure large-diameter all-welded ball valve Download PDFInfo
- Publication number
- CN202646855U CN202646855U CN 201220329017 CN201220329017U CN202646855U CN 202646855 U CN202646855 U CN 202646855U CN 201220329017 CN201220329017 CN 201220329017 CN 201220329017 U CN201220329017 U CN 201220329017U CN 202646855 U CN202646855 U CN 202646855U
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- valve seat
- valve body
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Abstract
A novel high-pressure large-diameter all-welded ball valve comprises a left valve body, a right valve body, an emergency sealing grease injection device, an intermediate valve, a ball body and a valve seat body, wherein the emergency sealing grease injection device is connected with the side of a flange of the novel high-pressure large-diameter all-welded ball valve, the ball body is arranged in the intermediate valve body, a heat-conduction blocking groove is arranged on one surface of the left valve body, a heat-conduction blocking groove is arranged on one surface of the right valve body, and the surface of the left valve body is opposite to the surface of the right valve body. A seal is formed between the valve seat body and the ball body through a quadruple sealing structure, and more specifically, the quadruple sealing structure comprises a first-stage seal, a second-stage seal, a third-stage seal and a fourth-stage seal, wherein the contact seal of the metal of the valve seat body and the metal of the ball body is the first-stage seal, polytetrafluoroethylene (PTFE) and carbon-fiber materials are embedded in a groove of the valve seat body and form the second-stage seal, the third-stage seal is a triangular seal ring, and the fourth-stage seal is the emergency sealing grease injection device. Due to the quadruple sealing structure of the novel high-pressure large-diameter all-welded ball valve, sealing performance of the novel high-pressure large-diameter all-welded ball valve is reliably guaranteed, and the service life of the novel high-pressure large-diameter all-welded ball valve is prolonged. The heat-conduction blocking grooves on the opposite surfaces of the left valve body and the right valve body are used for blocking heat conduction effectively in the process of butt welding, and therefore the problem that the valve seat body deforms because of heat to lock the ball body is prevented, and the major problem of welding is resolved.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relates to a kind of valve for Gao Long-distance Transmission Pipeline, is 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 critical process, and welding process is to carry out behind assembling product, 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, a kind of automatic welding method of general selection in the prior art, optimize welding procedure, 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 effectively do not block the structure of heat conduction in the welding process, often have valve seat temperature distortion in the welding process and the problem of locking spheroid.
The model utility content
The utility model provides a kind of novel high-pressure heavy caliber all-welded ball valve that sulfur-containing gas long-distance transport pipes project is used that is applicable to, not only overcome all-welded ball valve valve seat temperature distortion and problem of locking spheroid in welding process, and had more reliably sealing effect.
The technological scheme that adopts is: a kind of novel high-pressure heavy caliber all-welded ball valve, comprise left and right valve body and the emergency 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 described left and right valve body.
Described valve seat pedestal forms sealing by quadruple sealing configuration and described spheroid, and this quadruple sealing configuration is specially: the Metal Contact of described valve seat pedestal and spheroid itself is sealed into first order sealing; Be processed with groove on the described 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 triangular 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 utility model has guaranteed the sealability of valve more reliably, has prolonged the working life of valve.Because the middle valve body in the described all-welded ball valve and left and right valve body are welded by the butt weld of Narrow sloping-glot, so the twice groove that has at described left and right valve body opposing side is used in effectively intercept heat conduction 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 left side of the present utility model cross-sectional view.
Embodiment
Below in conjunction with accompanying drawing the utility model and beneficial effect thereof are described in further detail.
With reference to figure 1, a kind of novel high-pressure heavy caliber all-welded ball valve, comprise left valve barrel 4 and the emergency sealing grease filler 10 that is connected with its flange sidepiece, helical spring 3 and valve seat pedestal 2 are housed in the described left valve barrel 4, dunnage 6 and spheroid 1 are housed in the described middle valve body 7, have blocking-up thermal trough 9 on the opposing side of described left and right valve body, this groove is provided with twice, be used at effectively intercept heat conduction of butt-welding process, the locking spheroid to prevent the valve seat temperature distortion.
Described valve seat pedestal 2 forms sealing by quadruple sealing configuration and described spheroid 1, and this quadruple sealing configuration is specially: the Metal Contact of described valve seat pedestal 2 and spheroid itself is sealed into the first sealing; Be processed with groove on the described valve seat pedestal 2, inlay the PTFE+ carbon fibre material in this groove and form second sealing 11; Three seals is delta-ring 13, and these triangular seal ring 13 usefulness valve seat pressure rings 14 are pressed on the valve seat pedestal 2, and these valve seat pressure ring 14 screws are fixed on the 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 in the situation of medium elastic force by helical spring 3 push valve seat pedestal 2 to spheroid 1.
Right half part sectional drawing of the present utility model and described Fig. 1 full symmetric.
Above-described only is preferred embodiment of the present utility model.Should be understood that the those of ordinary skill for valve technology field, under technology enlightenment provided by the utility model, can also make other equivalent variations and improvement, also should be considered as protection domain of the present utility model.
Claims (2)
1. novel high-pressure heavy caliber all-welded ball valve, comprise left and right valve body and the emergency 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 described 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:
Described valve seat pedestal (2) forms sealing by quadruple sealing configuration and described spheroid (1), and this quadruple sealing configuration is specially: the Metal Contact of described valve seat pedestal (2) and spheroid itself is sealed into first order sealing; Be processed with groove on the described 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 triangular 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 |
|---|---|---|---|
| CN 201220329017 CN202646855U (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter all-welded ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329017 CN202646855U (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter all-welded ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646855U true CN202646855U (en) | 2013-01-02 |
Family
ID=47415964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329017 Expired - Fee Related CN202646855U (en) | 2012-07-09 | 2012-07-09 | Novel high-pressure large-diameter all-welded ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748519A (en) * | 2012-07-09 | 2012-10-24 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter fully-welded ball valve |
| CN107676499A (en) * | 2017-10-30 | 2018-02-09 | 博纳斯威阀门股份有限公司 | With the multiple-sealed valve with descaling function |
-
2012
- 2012-07-09 CN CN 201220329017 patent/CN202646855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748519A (en) * | 2012-07-09 | 2012-10-24 | 兰州高压阀门有限公司 | Novel high-pressure large-diameter fully-welded ball valve |
| CN107676499A (en) * | 2017-10-30 | 2018-02-09 | 博纳斯威阀门股份有限公司 | With the multiple-sealed valve with descaling function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20180709 |