CN101469778A - Flange type high temperature resistant bellows gate valve - Google Patents
Flange type high temperature resistant bellows gate valve Download PDFInfo
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- CN101469778A CN101469778A CNA2007101730904A CN200710173090A CN101469778A CN 101469778 A CN101469778 A CN 101469778A CN A2007101730904 A CNA2007101730904 A CN A2007101730904A CN 200710173090 A CN200710173090 A CN 200710173090A CN 101469778 A CN101469778 A CN 101469778A
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- stem mut
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Abstract
A flange type high-temperature resistance corrugated pipe gate valve, relating to a gate valve, comprises a flange valve body which is characterized in that a Co-base hard alloy sealing ring is build-up welded on the valve body, a Ti-plated austenitic stainless steel corrugated pipe device is movably connected between the lower part of a valve rod and the upper part of a gate plate, high-temperature resistance gaskets are inserted into uneven contacting places between the valve body and a valve cover, and mechanically connected by a spring gasket nut, a filler gasket is put into a filler case on the valve cover to make jack screws on the valve cover for gland mechanically connected by a jack nut, the upper part of the valve rod is fitted and mechanically connected in the valve rod nut, the lower part of the valve rod is movably and mechanically connected with the gate plate, the valve rod nut is fitted in a handwheel and mechanically connected by a key, the handwheel 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 valve rod nut. The invention is used for switching off or switching on the pipelines of various working conditions such as petroleum, chemical industry, pharmacy, chemical fertilizer, power industry or the like.
Description
Technical field:
The present invention relates to a kind of gate valve.
Background technique:
At present, known gate valve, the open-shut device with gate valve are the flashboards of plug type, and sealing surface is the plane or the conical surface, the center line moving linearly of flashboard longshore current body.The movement pattern of valve rod has elevating lever-type, and lifting rotation rod-type is also arranged.Gate 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 flashboard.When medium enters valve by the flashboard 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 gate valve enters valve pocket to just changing by the flashboard 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 gate valve was opened, the Lift of flashboard 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 gate valve should be decided by the stroke of flashboard.
Summary of the invention:
In order to solve gate valve forced seal formula valve, when valve closing, must exert pressure to flashboard, with the technical problem that forced seal face does not leak, the invention provides a kind of flange type high temperature resistant bellows gate valve.
Technological scheme: a kind of flange type high temperature resistant bellows gate 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 flashboard, 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 Stem Mut, the active mechanical connection of square toes and flashboard under the valve rod, Stem Mut fits in the handwheel by the key mechanical connection, handwheel one changes through Stem Mut makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, valve gap top endoporus is joined the Stem Mut mechanical connection, and outer tennis partner's wheel is embedded by Stem Mut tightening nut mechanical connection by key on the Stem Mut.
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 (bellows+filler) 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 Stem Muts, 13. handwheels, 14. the Stem Mut tightening nut, 15. keys, 16. Glands, 17. filler, 18. times Packing seats, 19. flashboards.
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 flashboard 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 Stem Mut 12,4 times square toes of valve rod and flashboard 19 active mechanical connections, Stem Mut 12 fits in the handwheel 13 consolidates it by key 15, handwheel 13 1 changes through Stem Mut 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 are joined Stem Mut 12, on the Stem Mut 12 outer tennis partner take turns 13 by key 15 embed by Stem Mut tightening nut 14 solid it, on valve gap 11, rotate.Flange connects convenient disassembly, dual robust bellows convenient disassembly, and product structure is reasonable, sealing is reliable, and dual robust sylphon seal design (bellows+filler) guarantees the zero leakage of valve rod.
Claims (2)
1. flange type high temperature resistant bellows gate 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 flashboard, 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
2. according to claims 1 described a kind of flange type high temperature resistant bellows gate valve, it is characterized in that the valve rod top fits over mechanical connection in the Stem Mut, the active mechanical connection of square toes and flashboard under the valve rod, Stem Mut fits in the handwheel by the key mechanical connection, handwheel one changes through Stem Mut makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, valve gap top endoporus is joined the Stem Mut mechanical connection, and outer tennis partner's wheel is embedded by Stem Mut tightening nut mechanical connection by key on the Stem Mut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101730904A CN101469778A (en) | 2007-12-26 | 2007-12-26 | Flange type high temperature resistant bellows gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101730904A CN101469778A (en) | 2007-12-26 | 2007-12-26 | Flange type high temperature resistant bellows gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469778A true CN101469778A (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101730904A Pending CN101469778A (en) | 2007-12-26 | 2007-12-26 | Flange type high temperature resistant bellows gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469778A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566324A (en) * | 2015-02-03 | 2015-04-29 | 张广山 | Steam boiler air valve |
| CN104989835A (en) * | 2015-07-20 | 2015-10-21 | 江苏通达船用阀泵有限公司 | Petroleum pipeline and asphalt conveying wear-resisting high-temperature-resisting gate valve |
| CN106855131A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of Parallel gate valve Parallel slide valve |
| CN110867123A (en) * | 2019-11-14 | 2020-03-06 | 中核核电运行管理有限公司 | Electric gate valve simulation body structure |
-
2007
- 2007-12-26 CN CNA2007101730904A patent/CN101469778A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566324A (en) * | 2015-02-03 | 2015-04-29 | 张广山 | Steam boiler air valve |
| CN104989835A (en) * | 2015-07-20 | 2015-10-21 | 江苏通达船用阀泵有限公司 | Petroleum pipeline and asphalt conveying wear-resisting high-temperature-resisting gate valve |
| CN106855131A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of Parallel gate valve Parallel slide valve |
| CN110867123A (en) * | 2019-11-14 | 2020-03-06 | 中核核电运行管理有限公司 | Electric gate valve simulation body structure |
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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 |