CN202719180U - Large-caliber all-welded ball valve - Google Patents
Large-caliber all-welded ball valve Download PDFInfo
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- CN202719180U CN202719180U CN201220435689.7U CN201220435689U CN202719180U CN 202719180 U CN202719180 U CN 202719180U CN 201220435689 U CN201220435689 U CN 201220435689U CN 202719180 U CN202719180 U CN 202719180U
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- valve rod
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Abstract
The utility model relates to the technical field of ball valve manufacture, in particular to a large-caliber all-welded ball valve. The large-caliber all-welded ball valve comprises a fixed shaft assembly, a left valve body, valve seat assemblies, a ball, a stuffing box assembly, a valve rod, a right valve body, a steel ball, a process valve rod and a process lower shaft. The large-caliber all-welded ball valve is characterized in that the valve seat assemblies are arranged on two sides inside the valve bodies, the ball supported through the valve rod and the fixed shaft assembly is arranged between the two valve seat assemblies, the stuffing box assembly matched with the valve rod is welded on the top of the valve bodies, and the valve rod connected with the ball is arranged on the axis of the stuffing box assembly, and the fixed shaft assembly is welded on the bottom of the valve bodies. The large-caliber all-welded ball valve is further provided with an anti-blow-off structure, a circular groove arranged in the inner surface of the stuffing box assembly and a circular groove arranged in the outer surface of the valve rod constitute a positioning circular groove, the anti-shearing steel ball is arranged inside the positioning circular groove, and therefore the anti-blow-off structure is formed. The large-caliber all-welded ball valve is stable and reasonable in structure, and spherical pressure-bearing state is good. In addition, the large-caliber all-welded ball valve has the advantages of being low in cost, small in installation space and the like, and drawing raw materials is convenient.
Description
[technical field]
The utility model relates to a kind of ball valve manufacturing technology field, relates in particular to a kind of heavy caliber all-welded ball valve.
[background technique]
All-welded ball valve, namely valve adopts the compressing Integral welded ball valve of carbon steel seamless steel pipe, the valve Placements such as welding, screw thread, flange is arranged for user selection, adopts handle, turbine, the kind of drive such as pneumatic, electronic, and switch is light flexibly.
All-welded ball valve is because of its integral type welding fabrication, so that compact structure, lightweight, be easy to insulation, be convenient to install, and it adopts carbon to strengthen PTFE inclined-plane elastic seal ring negative-pressure sealing sphere, make sealing reach zero leakage, the advantages such as long service life are widely used in rock gas, oil, heat supply, chemical industry and the isometric defeated pipeline of thermoelectric pipe network field.
Because the Large Oil gas field of exploitation how far from the consumer center, and along with worldwide oil gas trade increases year by year, impels gas pipeline to heavy caliber, long distance, high pressure future development.Because rock gas has extremely strong combustibility, so must guarantee the absolutely not any possibility to external leakage of the interior gas of pipeline, require the valve leak point on the pipeline to be down to minimum again.Therefore, the design proposal of heavy caliber all-welded ball valve has been proposed on the basis of all-welded ball valve.
China's heavy caliber, high pressure all-welded ball valve mostly are three pieces type tubular construction commonly used at present, the disclosed a kind of high-pressure heavy caliber all-welded of domestic patent CN201288874Y for example, comprise left and right sides valve body, middle valve body, valve rod, valve seat, spheroid, seal ring, fixed plate, spring, utilize the fluid in spring and the pipeline that valve seat and rubber seal are pressed on the spheroid, reach the effect of sealing, when the pressure in the spheroid during greater than spring pressure, valve seat and rubber seal break away from, automatic drainage pressure, but its boundary dimension and weight are still relatively large.
[summary of the invention]
The purpose of this utility model is to overcome the defective of prior art, provide a kind of and have firm bearing structure, Safety performance is high, boundary dimension is little, lightweight, the heavy caliber all-welded ball valve that requirements of installation space is little.
For achieving the above object, a kind of heavy caliber all-welded ball valve, comprise the stationary axle assembly, left valve barrel, valve component, spheroid, packing box assembly, valve rod, right valve barrel, steel ball, technique valve rod and technique lower shaft, it is characterized in that described valve inner both sides are provided with valve component, be provided with the spheroid that supports by valve rod and stationary axle between two valve components, the valve body welded top has the packing box assembly that cooperates with valve rod, the stuffing box axle center is provided with the valve rod that is connected with spheroid, the bottom welding of valve body has the stationary axle assembly, described heavy caliber all-welded ball valve also is provided with the anti-structure that blows out, the annular groove that the stuffing box internal surface is provided with annular groove and stem exterior surface forms a positioning ring groove, be equipped with anti-shearing steel ball in the positioning ring groove, consist of the anti-structure that blows out.
Described left valve barrel is connected with the right valve barrel built-up welding, forms spherical pressure resistant vessel, and weld seam from valve component farthest.
The utility model compared with prior art, the two cerebral hemispheres shape valve body all adopts the plate stamping moulding of molecular arrangement densification, after the assemble welding moulding, valve body is spherical, beneficial effect is to have firm bearing structure, load performance is best under the equal wall thickness condition, has improved the Safety performance grade of valve complete machine; The spherical shape size is little, lightweight simultaneously, and requirements of installation space is little, the intensifying valve using scope; The anti-blowing out device of valve rod is arranged on valve top, and replaceable valve rod is provided convenience to the user in the necessary situation.
[description of drawings]
Fig. 1 is the assembling schematic diagram of the utility model ball valve;
Fig. 2 is the utility model A-A sectional view;
Fig. 3 is the schematic diagram that carries out the welding of the two cerebral hemispheres shape valve body circumferential weld.
Among the figure: 1, stationary axle assembly, 2, left valve barrel, 3, valve component, 4, spheroid, 5, packing box assembly, 6, valve rod, 7, right valve barrel, 8, steel ball, 9, the technique valve rod, 10, the technique lower shaft.
[embodiment]
Below in conjunction with drawings and Examples the utility model is further specified, its shape, structure can be realized for a person skilled in the art.
The utility model has been selected the heavy caliber all-welded ball valve of spherical outside design in order to reach firm bearing structure, need to cater to the requirements such as boundary dimension is little, requirements of installation space is little again.
This heavy caliber all-welded ball valve is the bilateral symmetry structure, comprises stationary axle assembly 1, left valve barrel 2, valve component 3, spheroid 4, packing box assembly 5, valve rod 6, right valve barrel 7, steel ball 8, technique valve rod 9 and technique lower shaft 10,
The installation of its each parts arrange position such as Fig. 1, shown in Figure 2, valve body is divided into left valve barrel 2 and right valve barrel 7, left valve barrel 2 and right valve barrel 7 interconnect by built-up welding, left and right sides valve body 2, the both sides of 7 inside all are provided with valve component 3, cavity between two valve components 3 is provided with the spheroid 4 that supports by valve rod 6 and stationary axle 1, the valve body welded top has the packing box assembly 5 that cooperates with valve rod 6, stuffing box 5 axle center are provided with the valve rod 6 that is connected with spheroid 4, the bottom welding of valve body has stationary axle assembly 1, described heavy caliber all-welded ball valve also is provided with the anti-structure that blows out, the annular groove that stuffing box 5 internal surfaces are provided with annular groove and stem exterior surface forms a positioning ring groove, be equipped with anti-shearing steel ball 8 in the positioning ring groove, consist of the anti-structure that blows out.
Because ball valve is spherical bilateral symmetry structure, when therefore installing, adopt the circumferential weld welding procedure, left and right sides branch makes installs.The two cerebral hemispheres shape valve body all adopts the plate stamping moulding of molecular arrangement densification, after the assemble welding moulding, and inside and external shape, structure such as Fig. 1, shown in Figure 3 after welding manufacturing is finished.
Claims (2)
1. heavy caliber all-welded ball valve, comprise the stationary axle assembly, left valve barrel, valve component, spheroid, packing box assembly, valve rod, right valve barrel, steel ball, technique valve rod and technique lower shaft, it is characterized in that described valve inner both sides are provided with valve component, be provided with the spheroid that supports by valve rod and stationary axle between two valve components, the valve body welded top has the packing box assembly that cooperates with valve rod, the stuffing box axle center is provided with the valve rod that is connected with spheroid, the bottom welding of valve body has the stationary axle assembly, described heavy caliber all-welded ball valve also is provided with the anti-structure that blows out, the annular groove that the stuffing box internal surface is provided with annular groove and stem exterior surface forms a positioning ring groove, be equipped with anti-shearing steel ball in the positioning ring groove, consist of the anti-structure that blows out.
2. a kind of heavy caliber all-welded ball valve as claimed in claim 1 is characterized in that described left valve barrel is connected with the right valve barrel built-up welding, forms spherical pressure resistant vessel, and weld seam from valve component farthest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435689.7U CN202719180U (en) | 2012-08-29 | 2012-08-29 | Large-caliber all-welded ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435689.7U CN202719180U (en) | 2012-08-29 | 2012-08-29 | Large-caliber all-welded ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719180U true CN202719180U (en) | 2013-02-06 |
Family
ID=47621004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220435689.7U Expired - Lifetime CN202719180U (en) | 2012-08-29 | 2012-08-29 | Large-caliber all-welded ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402432A (en) * | 2015-12-09 | 2016-03-16 | 安徽铜都流体科技股份有限公司 | High-strength anti-leakage double-sealed welded ball valve |
| CN106895171A (en) * | 2015-12-18 | 2017-06-27 | 纽威阀门有限公司 | Sealing property ball valve high |
-
2012
- 2012-08-29 CN CN201220435689.7U patent/CN202719180U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402432A (en) * | 2015-12-09 | 2016-03-16 | 安徽铜都流体科技股份有限公司 | High-strength anti-leakage double-sealed welded ball valve |
| CN106895171A (en) * | 2015-12-18 | 2017-06-27 | 纽威阀门有限公司 | Sealing property ball valve high |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |