CN203979487U - A kind of valve base sealing structure of upper dress formula cryogenic ball valve - Google Patents
A kind of valve base sealing structure of upper dress formula cryogenic ball valve Download PDFInfo
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- CN203979487U CN203979487U CN201420411957.0U CN201420411957U CN203979487U CN 203979487 U CN203979487 U CN 203979487U CN 201420411957 U CN201420411957 U CN 201420411957U CN 203979487 U CN203979487 U CN 203979487U
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Abstract
The utility model relates to a kind of valve base sealing structure of upper dress formula cryogenic ball valve, comprise valve body, spheroid, valve seat, seal ring and spring, in valve body, rotate to regulate spheroid is installed, between valve ball and valve body, be coaxially installed with valve seat, the surface of contact coaxial cooperation of this valve seat and spheroid is provided with seal ring, between valve seat and valve body, be axially installed with a plurality of springs, between valve seat and valve body, be coaxially installed with spring seat, on spring seat, radial equipartition has a plurality of spring eyes, spring fitting is in the spring eye of spring seat, spring seat outer end is coaxially pressed with a spring pressure ring, this spring pressure ring is arranged on valve seat outer wall by thread engagement.The utility model is simple in structure, reasonable in design, easy to operate, does not need to dismantle valve during maintenance, efficiently solves the problem of valve on-line maintenance difficulty, has reduced engineering time and the maintenance cost of valve.
Description
Technical field
The utility model belongs to valve field, especially a kind of valve base sealing structure of upper dress formula cryogenic ball valve.
Background technique
At present, the valve base sealing structure of cryogenic ball valve be by spring fitting in the spring eye at the valve seat back side, seal ring interference is arranged in the seal groove of valve seat, valve seat and valve body are by seal with O ring, valve seat and spheroid seal by seal ring.Adopt existing sealing configuration, once valve is arranged on pipeline, be difficult to realize on-line maintenance, as need maintenance, valve must be disassembled from pipeline, complex operation, maintenance cost is high.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of valve base sealing structure of simple in structure, reasonable in design, easy to operate, upper dress formula cryogenic ball valve that pressure is large is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of valve base sealing structure of upper dress formula cryogenic ball valve, it is characterized in that: comprise valve body, spheroid, valve seat, seal ring and spring, in valve body, rotate to regulate spheroid is installed, between valve ball and valve body, be coaxially installed with valve seat, the surface of contact coaxial cooperation of this valve seat and spheroid is provided with seal ring, between valve seat and valve body, be axially installed with a plurality of springs, it is characterized in that: between valve seat and valve body, be coaxially installed with spring seat, on spring seat, radial equipartition has a plurality of spring eyes, spring fitting is in the spring eye of spring seat, spring seat outer end is coaxially pressed with a spring pressure ring, this spring pressure ring is arranged on valve seat outer wall by thread engagement, valve body, valve seat and spring seat a spline pin is radially installed, the cooperation place of spline pin and valve seat is shaped with an axial key-way shape guide rail sliding chute, spline pin can slide in key-way shape guide rail, thereby valve seat can be moved vertically.
And described valve seat and valve body seal by lip-type packing, and be also coaxially installed with a fire-protection ring between valve seat and valve body.
Advantage of the present utility model and good effect are:
The utility model is simple in structure, reasonable in design, easy to operate, does not need to dismantle valve during maintenance, efficiently solves the problem of valve on-line maintenance difficulty, has reduced engineering time and the maintenance cost of valve.
Accompanying drawing explanation
Fig. 1 is sealing configuration generalized section of the present utility model;
Fig. 2 is the key-way shape guide rail structure schematic diagram of valve seat;
Fig. 3 is the valve base sealing structure schematic diagram of prior art.
Mark representative in accompanying drawing: 1 valve body; 2 valve seats; 3 lip-type packings; 4 fire-protection rings; 5 springs; 6 seal rings; 7 spheroids; 8 spring pressure rings; 9 pressure pads; 10 spring seats; 11 spline pins.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of valve base sealing structure of upper dress formula cryogenic ball valve, comprise valve body 1, spheroid 7, valve seat 2, seal ring 6 and spring 5, in valve body, rotate to regulate spheroid is installed, between valve ball and valve body, be coaxially installed with valve seat, the surface of contact coaxial cooperation of this valve seat and spheroid is provided with seal ring, and the interference of sealing circle is arranged on the interior sealing effect that guarantees of seal groove of valve seat; In order to guarantee pretension effect, between valve seat and valve body, be axially installed with a plurality of springs, innovative point of the present utility model is:
Between valve seat and valve body, be coaxially installed with spring seat 10, on spring seat, radial equipartition has a plurality of spring eyes, spring fitting is in the spring eye of spring seat, spring seat outer end is coaxially pressed with a spring pressure ring 8, this spring pressure ring is arranged on valve seat outer wall by thread engagement, after spring pressure ring is tightened, spring, in compressive state, has guaranteed the initial sealing of valve.
Valve seat and valve body seal by lip-type packing 3, and between valve seat and valve body, are also coaxially installed with a fire-protection ring 4.
During assembling valve, when tightening spring pressure ring, in order to prevent valve seat rotation, at valve body, valve seat and spring seat one spline pin 11 is radially installed, the cooperation place of spline pin and valve seat is shaped with axial key-way shape guide rail 12 chutes, referring to accompanying drawing 3, spline pin can slide in key-way shape guide rail, thereby valve seat can be moved vertically.
This valve on-line maintenance method:
After valve installation, go wrong while needing repairing, the extremely loose and valve seat end face coincidence by spring pressure ring, now spring be totally released and and pressure pad leave certain distance, use special tool that valve seat is pushed into rear, then spheroid just can take out, again valve seat is pulled down, can be keeped in repair valve, and without valve is pulled down from pipeline.
Claims (2)
1. the valve base sealing structure of a upper dress formula cryogenic ball valve, it is characterized in that: comprise valve body, spheroid, valve seat, seal ring and spring, in valve body, rotate to regulate spheroid is installed, between valve ball and valve body, be coaxially installed with valve seat, the surface of contact coaxial cooperation of this valve seat and spheroid is provided with seal ring, between valve seat and valve body, be axially installed with a plurality of springs, it is characterized in that: between valve seat and valve body, be coaxially installed with spring seat, on spring seat, radial equipartition has a plurality of spring eyes, spring fitting is in the spring eye of spring seat, spring seat outer end is coaxially pressed with a spring pressure ring, this spring pressure ring is arranged on valve seat outer wall by thread engagement, valve body, valve seat and spring seat a spline pin is radially installed, the cooperation place of spline pin and valve seat is shaped with an axial key-way shape guide rail sliding chute, spline pin can slide in key-way shape guide rail, thereby valve seat can be moved vertically.
2. the valve base sealing structure of upper dress formula cryogenic ball valve according to claim 1, is characterized in that: described valve seat and valve body seal by lip-type packing, and is also coaxially installed with a fire-protection ring between valve seat and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411957.0U CN203979487U (en) | 2014-07-23 | 2014-07-23 | A kind of valve base sealing structure of upper dress formula cryogenic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411957.0U CN203979487U (en) | 2014-07-23 | 2014-07-23 | A kind of valve base sealing structure of upper dress formula cryogenic ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979487U true CN203979487U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420411957.0U Active CN203979487U (en) | 2014-07-23 | 2014-07-23 | A kind of valve base sealing structure of upper dress formula cryogenic ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203979487U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202218A (en) * | 2015-10-27 | 2015-12-30 | 上正阀门集团有限公司 | Top assembly type corrugated fixed ball valve |
| CN105587884A (en) * | 2016-02-25 | 2016-05-18 | 张家港富瑞特种装备股份有限公司 | Low-temperature emergency release valve |
| CN105805345A (en) * | 2016-06-01 | 2016-07-27 | 中玉阀门配件苏州有限公司 | Ball valve seat |
| CN106917873A (en) * | 2015-12-23 | 2017-07-04 | 罗伯特·博世有限公司 | Mould component with underground |
| CN110748646A (en) * | 2019-10-24 | 2020-02-04 | 马鞍山楚锐科技信息咨询有限公司 | Adjustable sealing element |
| CN113586755A (en) * | 2021-08-09 | 2021-11-02 | 凯喜姆阀门有限公司 | Fixed ball valve and online disassembling method thereof |
-
2014
- 2014-07-23 CN CN201420411957.0U patent/CN203979487U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202218A (en) * | 2015-10-27 | 2015-12-30 | 上正阀门集团有限公司 | Top assembly type corrugated fixed ball valve |
| CN106917873A (en) * | 2015-12-23 | 2017-07-04 | 罗伯特·博世有限公司 | Mould component with underground |
| CN105587884A (en) * | 2016-02-25 | 2016-05-18 | 张家港富瑞特种装备股份有限公司 | Low-temperature emergency release valve |
| CN105587884B (en) * | 2016-02-25 | 2018-06-01 | 张家港富瑞阀门有限公司 | Low temperature ejection escape valve |
| CN105805345A (en) * | 2016-06-01 | 2016-07-27 | 中玉阀门配件苏州有限公司 | Ball valve seat |
| CN110748646A (en) * | 2019-10-24 | 2020-02-04 | 马鞍山楚锐科技信息咨询有限公司 | Adjustable sealing element |
| CN113586755A (en) * | 2021-08-09 | 2021-11-02 | 凯喜姆阀门有限公司 | Fixed ball valve and online disassembling method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |