CN101469775A - Gas driven flange type high temperature resistant bellows stop valve - Google Patents
Gas driven flange type high temperature resistant bellows stop valve Download PDFInfo
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- CN101469775A CN101469775A CNA2007101733423A CN200710173342A CN101469775A CN 101469775 A CN101469775 A CN 101469775A CN A2007101733423 A CNA2007101733423 A CN A2007101733423A CN 200710173342 A CN200710173342 A CN 200710173342A CN 101469775 A CN101469775 A CN 101469775A
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- valve
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- mechanical connection
- valve rod
- mandrel
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Abstract
A pneumatic flange type high-temperature resistance corrugated pipe stop valve, relating to a pneumatic stop valve, comprises a flange valve body, a Co-base hard alloy sealing ring build-up welding on the valve body, a Ti-plated austenitic stainless steel corrugated pipe device movably connected between the lower part of a valve rod and the upper part of a valve clack, wherein the upper part of the valve rod is mechanically connected in a pneumatic mandrel sleeve, the lower part of which is mechanically connected with the valve clack, the pneumatic mandrel sleeve is arranged in the pneumatic mandrel and mechanically connected through a pneumatic device, the pneumatic mandrel rotates to make a lifting rod of the valve rod to drive the Ti-plated austenitic stainless steel corrugated pipe device to lift through the pneumatic mandrel sleeve, an inner hole on the upper part of a valve cover is matched and mechanically connected with the pneumatic mandrel, the pneumatic mandrel sleeve is matched and mechanically connected with the pneumatic mandrel through a transverse pin of the pneumatic mandrel sleeve. Due to flange connection, the device is convenient to be disassembled, and the corrugated pipe with dual-firmness and durability is convenient to be disassembled, the product has reasonable structure, reliable sealing, sealing design of the corrugated pipe with dual-firmness and durability, so zero leakage of the valve rod is guaranteed.
Description
Technical field:
The present invention relates to a kind of gas-powered 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, and lifting rotation rod-type is also arranged.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, the Lift of flap was 25% of nominal diameter～30% o'clock, and it is maximum that flow has 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 gas-powered flange type high temperature resistant bellows stop valve.
Technological scheme: a kind of gas-powered flange type high temperature resistant bellows stop valve, comprise the flange-type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the valve body, the active mechanical connection of titanizing Austenitic Stainless Steel bellows arrangement is below the valve rod and between above the flap, 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 the pneumatic core sleeve, the active mechanical connection of square toes and flap under the valve rod, pneumatic core sleeve fits in the pneumatic mandrel by the Pneumatic actuator mechanical connection, pneumatic mandrel one changes through pneumatic core sleeve makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, valve gap top endoporus distribution moving mandrel cover mechanical connection, interior distribution moving mandrel is by pneumatic core sleeve lateral pin mechanical connection in the pneumatic core sleeve.
Technique effect: owing to adopt such scheme, simple in structure, easy for installation, flange connects convenient disassembly, dual robust bellows convenient disassembly, and product structure is reasonable, sealing is reliable, 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. valve body, 2. built-up welding Co base cemented carbide seal ring, 3. titanizing Austenitic Stainless Steel bellows arrangement, 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 lateral pin, 15. Pneumatic actuator, 16. Glands, 17. filler, 18. times Packing seats, 19. flaps.
In the example shown in the figure: built-up welding Co base cemented carbide seal ring 2 on the valve body 1, sealing surface weld deposit Co base cemented carbide, wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, titanizing Austenitic Stainless Steel bellows arrangement 3 active mechanical connections are below the valve rod 4 and between above the flap 19, bellows titanizing Austenitic Stainless Steel is wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, 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, valve rod 4 tops fit in the pneumatic core sleeve 12,4 times square toes of valve rod and flap 19 active mechanical connections, pneumatic core sleeve 12 fits in the pneumatic mandrel 13 and consolidates it by Pneumatic actuator 15, pneumatic mandrel 13 1 changes through pneumatic core sleeve 12 makes valve rod 4 lifting bars drive 2 liftings of titanizing Austenitic Stainless Steel bellows arrangement, forced seal face does not leak, valve gap 11 top endoporus distribution moving mandrels cover 12, distribution moving mandrel 13 consolidates it by pneumatic core sleeve lateral pin 14 in the pneumatic core sleeve 12, rotates on valve gap 11.Flange connects convenient disassembly, dual robust bellows convenient disassembly, and product structure is reasonable, sealing is reliable, and dual robust sylphon seal design guarantees the zero leakage of valve rod.
Claims (2)
1. gas-powered flange type high temperature resistant bellows stop valve, comprise the flange-type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the valve body, the active mechanical connection of titanizing Austenitic Stainless Steel bellows arrangement is below the valve rod and between above the flap, 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 the pneumatic core sleeve, the active mechanical connection of square toes and flap under the valve rod.
2. according to claims 1 described a kind of gas-powered flange type high temperature resistant bellows stop valve, it is characterized in that pneumatic core sleeve fits in the pneumatic mandrel by the Pneumatic actuator mechanical connection, pneumatic mandrel one changes through pneumatic core sleeve makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, valve gap top endoporus distribution moving mandrel cover mechanical connection, interior distribution moving mandrel is by pneumatic core sleeve lateral pin mechanical connection in the pneumatic core sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101733423A CN101469775A (en) | 2007-12-27 | 2007-12-27 | Gas driven flange type high temperature resistant bellows stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101733423A CN101469775A (en) | 2007-12-27 | 2007-12-27 | Gas driven flange type high temperature resistant bellows stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469775A true CN101469775A (en) | 2009-07-01 |
Family
ID=40827503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101733423A Pending CN101469775A (en) | 2007-12-27 | 2007-12-27 | Gas driven flange type high temperature resistant bellows stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469775A (en) |
-
2007
- 2007-12-27 CN CNA2007101733423A patent/CN101469775A/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: 20090701 |