CN204985805U - All -welded casing ball valve - Google Patents
All -welded casing ball valve Download PDFInfo
- Publication number
- CN204985805U CN204985805U CN201520503321.3U CN201520503321U CN204985805U CN 204985805 U CN204985805 U CN 204985805U CN 201520503321 U CN201520503321 U CN 201520503321U CN 204985805 U CN204985805 U CN 204985805U
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- valve
- valve body
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- tang
- seam
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Abstract
The utility model discloses an all -welded casing ball valve, including valve body, valve gap, valve ball, backup pad, the junction is provided with and welds slot between valve body and the valve gap, and the valve body forms through the welding with the valve gap, the valve body medial surface is provided with the convex shoulder tang, the valve gap side is provided with the counter bore tang, the mutual joint in position of convex shoulder tang and counter bore tang, it has the heat dam transversely to link up on convex shoulder tang and the counter bore tang contact surface, the valve body weld be provided with between slot and the convex shoulder tang at the bottom of the welding seam high, be provided with the valve ball in the valve body, the valve ball top is provided with the shaft shoulder with the equal symmetry in bottom, the backup pad is cup jointed on the shaft shoulder, and the backup pad lateral surface is all fixed through the inboard facial features of cylindric lock and valve body. The utility model provides a pair of all -welded casing ball valve, design through height, convex shoulder tang, counter bore tang, heat dam at the bottom of the welding seam has improved welding quality, has promoted the qualification rate of making film after the valve welding, has reduced the ball valve repair rate.
Description
Technical field
The utility model relates to a kind of full welded case ball valve, belongs to ball valve technical field.
Background technique
Full welded case ball valve is widely used on oil and natural gas long-distance transport pipes, city buried pipe network and large-scale petroleum chemical plant installations.Due to compact structure, to the change of pressure and temperature is adaptable, easy to assembly etc., advantage has now been widely used in various fluid line, waste gas is selected and put pipeline, coal gas and heating power supply line, anyly cunning is let out because it can not produce within the scope of mark pressure and temperature, Buried Pipeline Network Systems can be applied to, only need small-sized shallow well be set on the ground, greatly saves operating expenses and engineering time.
But find through research, all-welded ball valve in use still exists many deficiencys, such as: appearance of weld unsightly, valve leaks, moment of torsion cannot open and close etc. greatly, even.Find afterwards by analysis, owing to relating to hot working and welding line structure design etc., often aborning because weld seam shrinks, thermal weld stress amount is too high, unreasonable structure, not only cause valve body, valve gaps etc. bear external pressure vessel component and deform, and inner body is as spheroid, the equal deformation failure of the parts such as supporting plate, and then cause seal failure, housing needs to cut open in weld joint, again process, again assemble, implement welding, pressure test, and part surplus after secondary operations is often not enough, if again apply welding, as everyone knows, often distortion is had in welding process, stress such as to concentrate at the factor being unfavorable for manufacturing operation, if unreasonable structure, applying welding procedure is unreasonable, serious may scrap all component completely, have a strong impact on the valve delivery phase, huge economic loss is brought to valve enterprise.
Model utility content
Object: in order to overcome the all-welded ball valve that exists in prior art because of welding deformation cause that valve repair rate is high, sealability inefficacy, bad delivery, production and maintenance cost is high, ball valve rotation torque is large technical problem, the utility model provides a kind of full welded case ball valve.
Technological scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of full welded case ball valve, comprise valve body, valve gap, valve ball, dunnage, between described valve body and valve gap, joint is provided with weld seam groove, and valve body and valve gap are by being welded; Described valve body inner side surface is provided with convex shoulder seam, and described valve gap side is provided with counterbore seam, the mutual clamping in position of described convex shoulder seam and counterbore seam; On described convex shoulder seam and counterbore seam surface of contact, lateral direction penetrating has heat dam; Be provided with at the bottom of weld seam high between described valve body weld seam groove and convex shoulder seam; Be provided with valve ball in described valve body, described valve ball top and bottom is all symmetrically arranged with the shaft shoulder, and described dunnage is socketed on the shaft shoulder, and dunnage outer side surface is all fixed by straight pin and valve body inner side surface.
Also comprise selflubricating thrust pad, between described dunnage and the shaft shoulder of valve ball, be provided with selflubricating thrust pad, for reducing the rotation torque of valve ball.
Preferably, described heat dam is positioned at the middle part of convex shoulder seam vertical surface and valve gap surface of contact.
Preferably, at the bottom of described weld seam, spacing that is high and convex shoulder seam end face is set to 1 ~ 1.5mm.
Beneficial effect: the full welded case ball valve of the one that the utility model provides, by high at the bottom of the weld seam that arranges below weld seam groove, ensure that valve body fully welds with between valve gap, avoid occurring rosin joint, not only increase connection reliability and the sealability of valve body and valve gap, more can replace bolt valve gap, stop interior media disclosure risk, extend ball valve working life; By convex shoulder seam, counterbore seam that valve body, valve gap are arranged, add the contact plane between valve body, valve gap, utilize the effect in horizontally U-shaped face, when welding generation thermal shrinkage, can cancel out each other, by deform ation prevention outside dunnage, greatly improve efficiency of assembling; By the heat dam preventing welding heat from spreading arranged below weld seam groove; prevent heat from concentrating and to burn on valve seat the sealing materials such as PTFE; can available protecting valve base seal property; reduce because the thermal shrinkage produced in welding process causes dunnage to be out of shape; improve welding quality; to make film after improving standard up-to-standard rate, reduce ball valve repair rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A portion structure enlarged diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of full welded case ball valve, comprise valve body 1, valve gap 2, valve ball 3, dunnage 4, between described valve body 1 and valve gap 2, joint is provided with weld seam groove 5, and valve body 1 and valve gap 2 are by being welded; Described valve body 1 inner side surface is provided with convex shoulder seam 6, and described valve gap 2 side is provided with counterbore seam 7, the mutual clamping in position of described convex shoulder seam 6 and counterbore seam 7; Described convex shoulder seam 6 has heat dam 8 with lateral direction penetrating on counterbore seam 7 surface of contact; Be provided with at the bottom of weld seam high by 9 between described valve body 1 weld seam groove 5 and convex shoulder seam 7; Be provided with valve ball 3 in described valve body 1, described valve ball 3 top and bottom is all symmetrically arranged with the shaft shoulder 10, and described dunnage 4 is socketed on the shaft shoulder 10, and dunnage 4 outer side surface is all fixed by straight pin 11 and valve body 1 inner side surface.
Also comprise selflubricating thrust pad 12, between described dunnage 4 and the shaft shoulder of valve ball 3, be provided with selflubricating thrust pad 12, for reducing the rotation torque of valve ball 3.
Preferably, described heat dam 8 is positioned at the middle part of convex shoulder seam 6 vertical surface and valve gap 2 surface of contact.
Preferably, high 91 ~ 1.5mm is set to the spacing of convex shoulder seam 6 end face at the bottom of described weld seam.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a full welded case ball valve, comprises valve body, valve gap, valve ball, it is characterized in that: also comprise dunnage, and between described valve body and valve gap, joint is provided with weld seam groove, and valve body and valve gap are by being welded; Described valve body inner side surface is provided with convex shoulder seam, and described valve gap side is provided with counterbore seam, the mutual clamping in position of described convex shoulder seam and counterbore seam; On described convex shoulder seam and counterbore seam surface of contact, lateral direction penetrating has heat dam; Be provided with at the bottom of weld seam high between described valve body weld seam groove and convex shoulder seam; Be provided with valve ball in described valve body, described valve ball top and bottom is all symmetrically arranged with the shaft shoulder, and described dunnage is socketed on the shaft shoulder, and dunnage outer side surface is all fixed by straight pin and valve body inner side surface.
2. the full welded case ball valve of one according to claim 1, is characterized in that: also comprise selflubricating thrust pad, is provided with selflubricating thrust pad between described dunnage and the shaft shoulder of valve ball, for reducing the rotation torque of valve ball.
3. the full welded case ball valve of one according to claim 1, is characterized in that: described heat dam is positioned at the middle part of convex shoulder seam vertical surface and valve gap surface of contact.
4. the full welded case ball valve of one according to claim 1, is characterized in that: at the bottom of described weld seam, spacing that is high and convex shoulder seam end face is set to 1 ~ 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503321.3U CN204985805U (en) | 2015-07-13 | 2015-07-13 | All -welded casing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503321.3U CN204985805U (en) | 2015-07-13 | 2015-07-13 | All -welded casing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985805U true CN204985805U (en) | 2016-01-20 |
Family
ID=55120173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520503321.3U Active CN204985805U (en) | 2015-07-13 | 2015-07-13 | All -welded casing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003681A (en) * | 2015-07-13 | 2015-10-28 | 昆山维萨阀门有限公司 | All-welded shell ball valve |
-
2015
- 2015-07-13 CN CN201520503321.3U patent/CN204985805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee after: Kunshan Weisa Valve Co., Ltd. Address before: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee before: Kunshan Weisa Valve Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |