CN203717970U - Valve sealing compensation structure - Google Patents
Valve sealing compensation structure Download PDFInfo
- Publication number
- CN203717970U CN203717970U CN201320826337.9U CN201320826337U CN203717970U CN 203717970 U CN203717970 U CN 203717970U CN 201320826337 U CN201320826337 U CN 201320826337U CN 203717970 U CN203717970 U CN 203717970U
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- CN
- China
- Prior art keywords
- valve
- flap
- valve rod
- rod
- clack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a valve sealing compensation structure. The valve sealing compensation structure comprises a valve body, a valve base, a valve clack and a valve rod, wherein the valve base and the valve clack are arranged in a middle cavity of the valve body; the valve clack is driven by the valve rod to keep away from or close to the sealing surface of the valve base to open and close the valve. The innovation points of the valve sealing compensation structure are that a cavity body for containing the lower end of the valve rod is arranged at the upper end of the valve clack; the lower end of the valve rod is fixedly connected with the valve clack through a connecting piece after entering into the valve clack cavity, and a belleville spring positioned between the lower end surface of the valve rod and the valve clack is filled in the cavity body. The valve sealing compensation structure has the advantages that the belleville spring is arranged between the head part of the valve rod and the valve clack, when the valve is closed, the belleville spring generates elastic deformation because of stress, no clearance is formed between the valve rod and the valve clack; when the temperature of the valve rod gradually decreases, the valve rod generates micro thermal contraction, the thermal contraction deformation of the valve rod is compensated by the elastic deformation when the belleville spring is closed; the valve clack presses the valve base, so that the sealing surface of the valve base can be tightly contacted with the sealing surface of the valve clack, and an excellent seal specific pressure can be guaranteed.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of valve seal collocation structure.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.Power station valve also claims power station special valve, is mainly applicable on the pipeline of the various systems of firepower power station, cuts off or connect pipeline medium.The good valve Applicable media of work: the non-aggressive media such as water, steam; The feature that power station valve is compared with other valve products is High Temperature High Pressure, so designing requirement is very high.
In at present traditional power station valve structure, uncompensated structure between valve rod and flap, there is certain defect in it: because its operating mode has the feature of High Temperature High Pressure, therefore the temperature difference of working is larger, valve rod is in the situation that temperature variation is larger, there will be certain expanding with heat and contract with cold, therefore easily cause the valve sealing face causing because of the micro-contraction of valve rod temperature reduction valve rod to leak.This situation is particularly evident on traditional low in and high out stop valve.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of valve seal collocation structure, can in the situation that shrinking appears in valve rod, automatically supplement gap and avoid occurring leaking.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of valve seal collocation structure, comprise valve body, valve seat, flap, valve rod, valve body lumen is built-in with valve seat and flap, flap is driven away from by valve rod or is close to the keying that sealing surface of seat is realized valve, its innovative point is: the upper end of described flap has a cavity that holds valve rod lower end, the lower end of valve rod is connected and fixed by link and flap after stretching into flap cavity, and fills at the lower end surface of valve rod and the belleville spring between flap in described cavity.
The lower end of described valve rod is connected with inverted T-shaped structure, and this inverted T-shaped structure consists of the spacing end segments of upper axis cervical part of esophagus and bottom; Described link is valve clack cover, and valve clack cover is sleeved in axle journal section and is spacing by spacing end segments, and this valve clack cover outer surface is external thread structure; The upper-end surface of described flap is provided with a step-like cylindrical cavity, and this step-like cylindrical cavity consists of the upper cylindrical thread hole with valve clack cover screw-thread fit and the lower cylinder unthreaded hole that holds belleville spring, valve stem spacing end segments; Spacing end, the bottom of described valve rod embeds in the lower cylinder unthreaded hole of flap, and is placed with belleville spring between the lower end surface of valve rod and flap, and by valve clack cover, being threaded with flap to lock is connected and fixed valve rod and flap.
The utility model has the advantage of: between valve rod head and flap, butterfly spring is set, butterfly spring stress generation elastic strain, now gapless between valve rod and flap after valve shuts; After valve rod temperature reduces gradually, valve rod produces micro-shrinkage, and the shrinkage distortion of elastic strain compensation valve rod when now butterfly spring utilization is closed, presses to valve seat by flap, guarantee the close contact of sealing surface of seat and valve clack sealing surface, still there is good seal pressure.
Accompanying drawing explanation
Fig. 1 is the utility model valve seal collocation structure schematic diagram.
Embodiment
As shown in Figure 1, comprise valve body 1, valve seat 2, flap 3, valve rod 4, valve clack cover 5 and belleville spring 6, at valve body 1 lumen, be built-in with valve seat 2 and flap 3, flap 3 is driven away from by valve rod 4 or is close to the keying that valve seat 2 sealing surfaces are realized valve, the upper end of flap 3 has a cavity that holds valve rod 4 lower ends, the lower end of valve rod 4 is connected and fixed by link and flap 3 after stretching into flap 3 cavitys, and fill at the lower end surface of valve rod 4 and the cushion between flap 3 in this cavity, this cushion is belleville spring 6.
As the utility model mode of execution more specifically, in the lower end of valve rod 4, be connected with inverted T-shaped structure, this inverted T-shaped structure consists of the spacing end segments of upper axis cervical part of esophagus and bottom; Link is valve clack cover 5, and valve clack cover 5 is sleeved in axle journal section and is spacing by spacing end segments, and these valve clack cover 5 outer surfaces are external thread structure;
The upper-end surface of flap 3 is provided with a step-like cylindrical cavity, and this step-like cylindrical cavity consists of the upper cylindrical thread hole with valve clack cover 5 screw-thread fit and the lower cylinder unthreaded hole that holds belleville spring 6, valve stem spacing end segments;
Spacing end, the bottom of valve rod embeds in the lower cylinder unthreaded hole of flap 3, and is placed with belleville spring 6 between the lower end surface of valve rod 4 and flap 3, and by valve clack cover 5, being threaded with flap 3 to lock is connected and fixed valve rod 4 and flap 3.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand, and the utility model is not restricted to the described embodiments, and that in above-described embodiment and specification, describes just illustrates principle of the present utility model, such as link, can be the known links such as bearing pin, repeats no more here.
Claims (2)
1. a valve seal collocation structure, comprise valve body, valve seat, flap, valve rod, valve body lumen is built-in with valve seat and flap, flap is driven away from by valve rod or is close to the keying that sealing surface of seat is realized valve, it is characterized in that: the upper end of described flap has a cavity that holds valve rod lower end, the lower end of valve rod is connected and fixed by link and flap after stretching into flap cavity, and fills at the lower end surface of valve rod and the belleville spring between flap in described cavity.
2. valve seal collocation structure according to claim 1, is characterized in that:
The lower end of described valve rod is connected with inverted T-shaped structure, and this inverted T-shaped structure consists of the spacing end segments of upper axis cervical part of esophagus and bottom;
Described link is valve clack cover, and valve clack cover is sleeved in axle journal section and is spacing by spacing end segments, and this valve clack cover outer surface is external thread structure;
The upper-end surface of described flap is provided with a step-like cylindrical cavity, and this step-like cylindrical cavity consists of the upper cylindrical thread hole with valve clack cover screw-thread fit and the lower cylinder unthreaded hole that holds belleville spring, valve stem spacing end segments;
Spacing end, the bottom of described valve rod embeds in the lower cylinder unthreaded hole of flap, and is placed with belleville spring between the lower end surface of valve rod and flap, and by valve clack cover, being threaded with flap to lock is connected and fixed valve rod and flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826337.9U CN203717970U (en) | 2013-12-16 | 2013-12-16 | Valve sealing compensation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826337.9U CN203717970U (en) | 2013-12-16 | 2013-12-16 | Valve sealing compensation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717970U true CN203717970U (en) | 2014-07-16 |
Family
ID=51157121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320826337.9U Expired - Fee Related CN203717970U (en) | 2013-12-16 | 2013-12-16 | Valve sealing compensation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717970U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485361A (en) * | 2015-12-25 | 2016-04-13 | 吴忠仪表有限责任公司 | Core bar connecting structure of angle valve for coal chemical industry |
| CN108050054A (en) * | 2017-11-29 | 2018-05-18 | 西安航天泵业有限公司 | A kind of temperature deformation compensator and double shell sectional type multi-stage pump |
| CN108167449A (en) * | 2017-12-29 | 2018-06-15 | 朱书红 | A kind of high-temperature sealing valve |
| CN109185477A (en) * | 2018-10-31 | 2019-01-11 | 超达阀门集团股份有限公司 | A kind of shockproof anti-sticking regulating valve of harshness operating condition |
-
2013
- 2013-12-16 CN CN201320826337.9U patent/CN203717970U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485361A (en) * | 2015-12-25 | 2016-04-13 | 吴忠仪表有限责任公司 | Core bar connecting structure of angle valve for coal chemical industry |
| CN105485361B (en) * | 2015-12-25 | 2019-01-25 | 吴忠仪表有限责任公司 | A kind of mandrel connecting structure of coal chemical industry angle valve |
| CN108050054A (en) * | 2017-11-29 | 2018-05-18 | 西安航天泵业有限公司 | A kind of temperature deformation compensator and double shell sectional type multi-stage pump |
| CN108167449A (en) * | 2017-12-29 | 2018-06-15 | 朱书红 | A kind of high-temperature sealing valve |
| CN109185477A (en) * | 2018-10-31 | 2019-01-11 | 超达阀门集团股份有限公司 | A kind of shockproof anti-sticking regulating valve of harshness operating condition |
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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 |
Granted publication date: 20140716 Termination date: 20181216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |