CN202484375U - High water filling safety valve for boiler - Google Patents
High water filling safety valve for boiler Download PDFInfo
- Publication number
- CN202484375U CN202484375U CN2011205728996U CN201120572899U CN202484375U CN 202484375 U CN202484375 U CN 202484375U CN 2011205728996 U CN2011205728996 U CN 2011205728996U CN 201120572899 U CN201120572899 U CN 201120572899U CN 202484375 U CN202484375 U CN 202484375U
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- China
- Prior art keywords
- valve
- sealing
- flap
- water filling
- high water
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- 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 - Lifetime
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Abstract
The utility model relates to a high water filling safety valve for a boiler. The high water filling safety valve comprises a valve body, a valve seat, a valve flap, a guide sleeve, a valve cover, a spring, a valve rod, a valve cap and a corrugated pipe component, wherein the valve seat is fixedly arranged at an inner cavity of the valve body, and the sealing surface of the valve body is surfaced with hard alloy. The high water filling safety valve is mainly characterized in that the sealing surface of the valve seat is provided with an inner conical curved surface; the sealing surface of the valve flap is made into a conical elastic sealing ring structure; the outer-ring conical surface of the conical elastic sealing ring is provided with a sealing curved surface matched with the inner conical surface of the valve seat; and a radiator is arranged between the valve cover and the valve body. The high water filling safety valve has the beneficial effects that the sealing specific pressure is increased, and heat transferred to the inner cavity of the valve cover to influence the rigidity of the spring is reduced. The high water filling safety valve has the advantages of good sealing performance and accurate set pressure and the like, and is applicable to being used as an over-pressure protection device on a pipeline at the water filling side of the boiler.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of safety valve.The utility model is applicable on the pipeline of boiler fills side as overpressure protector.
Background technique
Using the safety valve on the boiler feed water duct at present all is to adopt the spring Low lift safety valve, and sealing surface position pile-up welding hard alloy is to belong to the metal hard-sealing structure.The guiding position of flap and guide sleeve internal surface does not make current-limiting mechanism.Do not design cooling mechanism between valve gap and the valve body.Its major defect is: under the effect of the high-temperature water of boiler feed water side, when sealing surface adopts the metal hard-sealing structure, because the leakage of medium takes place the inequality of being heated of sealing surface inner ring and outer ring easily; Owing to there is not sink, the superheat temperature of high-temperature water is transmitted the valve gap position easily, influences the rigidity of spring, thereby influences the accuracy of Set pressure value simultaneously; After safety valve was opened, high-temperature water got into the valve gap inner chamber from the guiding position of flap and guide sleeve easily, directly washes away spring, influences the performance of safety valve in addition.Its poor sealing performance, Set pressure precision are low.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, provides a kind of and can effectively reduce cavity temperature in the valve gap, stops high temperature media directly to wash away spring, and good seal performance, the high boiler height of Set pressure degree of accuracy add the water security valve.
The technological scheme of the utility model comprises valve body, valve seat, flap, guide sleeve, valve gap, spring, valve rod, bonnet, bellows component; Valve seat is fixedly mounted on body cavity; Its sealing surface weld deposit cemented carbide mainly is that sealing surface of seat has the female cone curved surface, and the flap sealing surface is processed conical elastic packing ring structure; The outer conical surface of this taper shape elastic sealing ring has the sealing curved surface that cooperatively interacts with the valve seat internal conical surface, is provided with radiator between valve gap and the valve body.
In above technological scheme, the upper end of the flap back side and guide sleeve is equipped with bellows component, and the end sealing of this bellows component is fitted between guide sleeve and the radiator, and the other end seal weld is connected on the flap back side.
In above technological scheme, the guiding matching part of flap and guide sleeve is provided with maze trough.
The utility model has the advantages that: the conical elastic sealing ring of flap produces the outside distortion of trace under the medium active force; Make the flap sealing surface to the sealing surface of seat compression fit; Improve seal pressure; Simultaneously between valve gap and valve body, be provided with radiator, reducing the high temperature media heat transfer influences spring rate to the valve gap inner chamber, has characteristics such as good seal performance, Set pressure be accurate.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Boiler height as shown in Figure 1 adds the water security valve; Comprise valve body 3, valve seat 2, flap 6, guide sleeve 7, valve gap 9, spring 11, valve rod 10, bonnet 12, bellows component 15; Valve seat 2 is fixedly mounted on valve body 3 inner chambers, its sealing surface weld deposit cemented carbide, and valve seat 2 sealing surfaces have the female cone curved surface; Flap 6 sealing surfaces are processed conical elastic packing ring structure; The outer conical surface of this taper shape elastic sealing ring has the sealing curved surface that cooperatively interacts with valve seat 2 internal conical surfaces, and medium gets into the conical elastic sealing ring inner chamber of flap 6, makes conical elastic sealing ring produce the outside distortion of trace; Flap 6 sealing surfaces are cooperated to valve seat 2 sealing surface compact, improve seal pressure.Be provided with radiator 8 between valve gap 9 and the valve body 3; These radiator 8 upper ends are fixedly connected with valve gap 9; The upper-end surface fixing seal of lower end and valve body 3, guide sleeve 7 is installed, and reducing the high temperature media heat transfer influences spring 11 rigidity to valve gap 9 inner chambers, improves the Set pressure degree of accuracy.
The upper end of flap 6 back sides and guide sleeve 7 is equipped with bellows component 15, and the end sealing of this bellows component 15 is fitted between guide sleeve 7 and the radiator 8, and the other end seal weld is connected on flap 6 back sides.Prevent that the high temperature media direct admission valve from covering 9 inner chambers, washes away spring 11.
The import of valve seat 2 is provided with suction flange 1, and outlet is provided with Adjusting ring 5, and this Adjusting ring 5 is fixing by the adjusting screw 4 that is installed on the valve body 3.The outlet of valve body 3 is provided with outlet(discharge) flange 16, and spring 11 is installed between the lower spring cup and upper spring seat 14 on the valve rod 10, and the swivel nut 13 of adjusting is adorned on top, upper spring seat 14 upper-end surfaces, and this swivel nut 13 of adjusting is fixedly mounted on the valve gap 9 by tightening nut.
Claims (3)
1. a boiler height adds the water security valve; Comprise valve body (3), valve seat (2), flap (6), guide sleeve (7), valve gap (9), spring (11), valve rod (10), bonnet (12), bellows component (15); Valve seat (2) is fixedly mounted on valve body (3) inner chamber; Its sealing surface weld deposit cemented carbide is characterized in that: valve seat (2) sealing surface has the female cone curved surface, and flap (6) sealing surface is processed conical elastic packing ring structure; The outer conical surface of this taper shape elastic sealing ring has the sealing curved surface that cooperatively interacts with valve seat (2) internal conical surface, is provided with radiator (8) between valve gap (9) and the valve body (3).
2. boiler height according to claim 1 adds the water security valve; It is characterized in that: the upper end of flap (6) back side and guide sleeve (7) is equipped with bellows component (15); The one end sealing of this bellows component (15) is fitted between guide sleeve (7) and the radiator (8), and the other end seal weld is connected on flap (6) back side.
3. boiler height according to claim 1 and 2 adds the water security valve, it is characterized in that: flap (6) is provided with maze trough with the guiding matching part of guide sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205728996U CN202484375U (en) | 2011-12-19 | 2011-12-19 | High water filling safety valve for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205728996U CN202484375U (en) | 2011-12-19 | 2011-12-19 | High water filling safety valve for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202484375U true CN202484375U (en) | 2012-10-10 |
Family
ID=46958798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205728996U Expired - Lifetime CN202484375U (en) | 2011-12-19 | 2011-12-19 | High water filling safety valve for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202484375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913089A (en) * | 2015-06-01 | 2015-09-16 | 杭州华惠阀门有限公司 | Safety valve |
| CN111853344A (en) * | 2020-08-24 | 2020-10-30 | 鞍山电磁阀有限责任公司 | Heat radiator and electromagnetic proportional control valve |
-
2011
- 2011-12-19 CN CN2011205728996U patent/CN202484375U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913089A (en) * | 2015-06-01 | 2015-09-16 | 杭州华惠阀门有限公司 | Safety valve |
| CN111853344A (en) * | 2020-08-24 | 2020-10-30 | 鞍山电磁阀有限责任公司 | Heat radiator and electromagnetic proportional control valve |
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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 |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |