CN101592260A - A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows - Google Patents
A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows Download PDFInfo
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- CN101592260A CN101592260A CNA2008100383484A CN200810038348A CN101592260A CN 101592260 A CN101592260 A CN 101592260A CN A2008100383484 A CNA2008100383484 A CN A2008100383484A CN 200810038348 A CN200810038348 A CN 200810038348A CN 101592260 A CN101592260 A CN 101592260A
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- pneumatic
- valve
- mechanical connection
- valve rod
- bellows
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Abstract
A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows relates to a kind of pneumatic stop valve.Comprise built-up welding Co base cemented carbide seal ring on the welded connection type valve body, the active mechanical connection of the dual bellows arrangement of titanizing Austenitic Stainless Steel is below valve rod, the active mechanical connection of square toes and flap under the valve rod, pneumatic mandrel one changes through pneumatic core sleeve makes the valve rod lifting bar drive the dual bellows arrangement lifting of titanizing Austenitic Stainless Steel, dual robust bellows convenient disassembly guarantees the zero leakage of valve rod.Sealing surface weld deposit Co base cemented carbide, bellows titanizing Austenitic Stainless Steel are wear-resisting, corrosion resistant, good, the long service life of friction resistant performance, are applicable on the pipeline of various operating modes such as oil, chemical fertilizer, power industry, cut off or connect the pipeline medium.
Description
Technical field:
The present invention relates to a kind of pneumatic stop valve.
Background technique:
At present, known stop valve, the open-shut device with stop valve are the flaps of plug type, and sealing surface is the plane or the conical surface, the center line moving linearly of flap longshore current body.The movement pattern of valve rod has elevating lever-type.Stop valve only is applicable to standard-sized sheet and complete shut-down, does not allow to do to regulate and throttling.Belong to forced seal formula valve,, do not leak with forced seal face so when valve closing, must exert pressure to flap.When medium enters valve by the flap below, the required resistance that overcomes of steering force is the frictional force of valve rod and filler with by the thrust that pressure produced of medium, the power that the force rate of closing valve is opened valve is big, so it is big that the diameter of valve rod is wanted, otherwise the fault of valve rod bending can take place.In recent years, after occurring from self-packing valve, the MEDIA FLOW of stop valve enters valve pocket to just changing by the flap top, and at this moment, under the pressure medium effect, the power of closing valve is little, and it is big to open the power of valve, and the diameter of valve rod can correspondingly reduce.Simultaneously, under the medium effect, the valve of this pattern is also tighter.When stop valve was opened, it is maximum that the Lift of flap, flow have reached, and the expression valve has reached fully open position.So the fully open position of stop valve should be decided by the stroke of flap.
Summary of the invention:
In order to solve stop valve forced seal formula valve, when valve closing, must exert pressure to flap, with the technical problem that forced seal face does not leak, the invention provides a kind of pneumatic globe valve for welding connected type high-temperature resistant bellows.
Technological scheme: a kind of pneumatic globe valve for welding connected type high-temperature resistant bellows, comprise the welded connection type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the welded connection type valve body, the active mechanical connection of the dual bellows arrangement of titanizing Austenitic Stainless Steel is below valve rod, the welded connection type valve body contacts the convex-concave place and is embedded with bolt spring pad nut mechanical connection by high temperature resistant pad with valve gap, put down in the stuffing box on the valve gap Packing seat filler by Gland with the jack screw on the valve gap by very heavy nut mechanical connection, the valve rod top fits over mechanical connection in pneumatic the core sleeve, the active mechanical connection of square toes and flap under the valve rod, pneumatic core sleeve fits in pneumatic the mandrel by pneumatic head unit mechanical connection, pneumatic mandrel one changes through pneumatic core sleeve makes the valve rod lifting bar drive the dual bellows arrangement lifting of titanizing Austenitic Stainless Steel, the moving core sleeve's mechanical connection of valve gap top endoporus distribution, the moving mandrel of interior distribution is embedded by pneumatic core sleeve's lateral pin mechanical connection by pneumatic head unit in pneumatic the core sleeve.
Technique effect: owing to adopt such scheme, simple in structure, easy for installation, dual robust bellows convenient disassembly, product structure is reasonable, sealing is reliable, and dual robust sylphon seal design guarantees the zero leakage of valve rod.Do not have fluid loss, reduce energy loss, improve safety of factory equipment.Sealing surface weld deposit Co base cemented carbide, wear-resisting, corrosion resistant, good, the long service life of friction resistant performance, bellows titanizing Austenitic Stainless Steel is wear-resisting, corrosion resistant, good, the long service life of friction resistant performance, modified and the surfaces nitrided processing of valve rod has good anti-corruption and friction resistant performance; The indication of valve rod lifting position, more directly perceived, be applicable on the pipeline of various operating modes such as oil, chemical industry, pharmacy, chemical fertilizer, power industry, cut off or connect the pipeline medium.On conduction oil snail boiler tube road engineering, use especially.
Description of drawings:
Fig. 1 is the schematic representation of the embodiment of the invention.
Embodiment:
The present invention is further described below in conjunction with drawings and Examples.
In the drawings: 1. welded connection type valve body, 2. built-up welding Co base cemented carbide seal ring, the 3. dual bellows arrangement of titanizing Austenitic Stainless Steel, 4. valve rod, 5. high temperature resistant pad, 6. bolt, 7. compression spring, 8. nut, 9. jack screw, 10. very heavy nut, 11. valve gap, 12. pneumatic core sleeves, 13. pneumatic mandrels, 14. pneumatic core sleeve's lateral pin, 15. pneumatic head units, 16. Glands, 17. filler, 18. times Packing seats, 19. flaps.
In example shown in Figure 1: built-up welding Co base cemented carbide seal ring 2 on the welded connection type valve body 1, sealing surface weld deposit Co base cemented carbide, wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, the dual bellows arrangement 3 active mechanical connections of titanizing Austenitic Stainless Steel are below valve rod 4, bellows titanizing Austenitic Stainless Steel is wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, welded connection type valve body 1 contacts the convex-concave place and embeds with bolt 6 compression springs 7 nuts 8 fastening by high temperature resistant pad 5 with valve gap 11, putting down Packing seat 18 in the stuffing box on the valve gap 11 is tightened up by the jack screw 9 on the Gland 16 usefulness valve gaps 11 filler 17 by very heavy nut 10 adjustment, 4 times square toes of valve rod and flap 19 active mechanical connections, valve rod 4 tops fit in pneumatic the core sleeve 12, pneumatic core sleeve 12 fits in pneumatic the mandrel 13 and consolidates it by pneumatic head unit 15, pneumatic mandrel 13 1 changes through pneumatic core sleeve 12 makes valve rod 4 lifting bars drive dual bellows arrangement 2 liftings of titanizing Austenitic Stainless Steel, forced seal face does not leak, a core sleeve 12 is moved in valve gap 11 top endoporus distributions, in in pneumatic the core sleeve 12 the moving mandrel 13 of distribution by pneumatic head unit 15 embed by pneumatic core sleeve's lateral pin 14 solid it, on valve gap 11, rotate.
Claims (3)
1. pneumatic globe valve for welding connected type high-temperature resistant bellows, comprise welded connection type welded connection type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the welded connection type valve body, the active mechanical connection of the dual bellows arrangement of titanizing Austenitic Stainless Steel below valve rod, the active mechanical connection of square toes and flap under the valve rod.
2. a kind of pneumatic globe valve for welding connected type high-temperature resistant bellows according to claim 1, it is characterized in that the welded connection type valve body contacts the convex-concave place and embedded with bolt spring pad nut mechanical connection by high temperature resistant pad with valve gap, put down in the stuffing box on the valve gap Packing seat filler by Gland with the jack screw on the valve gap by very heavy nut mechanical connection.
3. a kind of pneumatic globe valve for welding connected type high-temperature resistant bellows according to claim 1, it is characterized in that the valve rod top fits over mechanical connection in pneumatic the core sleeve, pneumatic core sleeve fits in pneumatic the mandrel by pneumatic head unit mechanical connection, pneumatic mandrel one changes through pneumatic core sleeve makes the valve rod lifting bar drive the dual bellows arrangement lifting of titanizing Austenitic Stainless Steel, the moving core sleeve's mechanical connection of valve gap top endoporus distribution, the moving mandrel of interior distribution is embedded by pneumatic core sleeve's lateral pin mechanical connection by pneumatic head unit in pneumatic the core sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100383484A CN101592260A (en) | 2008-05-30 | 2008-05-30 | A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100383484A CN101592260A (en) | 2008-05-30 | 2008-05-30 | A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101592260A true CN101592260A (en) | 2009-12-02 |
Family
ID=41407063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100383484A Pending CN101592260A (en) | 2008-05-30 | 2008-05-30 | A kind of pneumatic globe valve for welding connected type high-temperature resistant bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101592260A (en) |
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2008
- 2008-05-30 CN CNA2008100383484A patent/CN101592260A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091202 |