CN101571198A - External thread connecting type high-temperature resistant corrugated pipe stop valve - Google Patents
External thread connecting type high-temperature resistant corrugated pipe stop valve Download PDFInfo
- Publication number
- CN101571198A CN101571198A CNA2008100368130A CN200810036813A CN101571198A CN 101571198 A CN101571198 A CN 101571198A CN A2008100368130 A CNA2008100368130 A CN A2008100368130A CN 200810036813 A CN200810036813 A CN 200810036813A CN 101571198 A CN101571198 A CN 101571198A
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- Prior art keywords
- valve
- corrugated pipe
- external thread
- thread connecting
- temperature resistant
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- 230000009977 dual effect Effects 0.000 claims abstract description 12
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 229910001566 austenite Inorganic materials 0.000 abstract 3
- 239000010935 stainless steel Substances 0.000 abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an external thread connecting type high-temperature resistant corrugated pipe stop valve and relates to a stop valve which comprises an external thread connecting type valve body, wherein a Co-based hard alloy seal ring is welded on the external thread connecting type valve body; a titanizing austenite stainless steel dual corrugated pipe device is loosely and mechanically connected under a valve rod; and a handwheel rotates and causes a lifting rod of the valve rod to drive the titanizing austenite stainless steel dual corrugated pipe device to lift by a valve rod nut. A dual, hard and durable corrugated pipe is convenient for disassembly, external threads are convenient for connection and disassembly, a product has reasonable structure and reliable seal, and the zero leakage of the valve rod is ensured. The external thread connecting type high-temperature resistant corrugated pipe stop valve has the advantages of Co-based hard alloy welded on the seal surface, good abrasion resistance, corrosion resistance and friction resistance of corrugated pipe titanizing austenite stainless steel and long service life, is suitable for switching off or on a pipeline medium on a pipeline under various working conditions of petroleum, chemical industry, pharmacy, fertilizer, power industry, and the like and is particularly used for conduction oil boiler pipeline engineer.
Description
Technical field:
The present invention relates to a kind of 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, 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 external thread connecting type high-temperature resistant corrugated pipe stop valve.
Technological scheme: a kind of external thread connecting type high-temperature resistant corrugated pipe stop valve, comprise the external screw joint type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the external screw joint type valve body, the active mechanical connection of the dual bellows arrangement of titanizing Austenitic Stainless Steel is below valve rod, the external screw joint 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 the Stem Mut, 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 dual bellows arrangement lifting of titanizing Austenitic Stainless Steel, 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, dual robust bellows convenient disassembly, outside thread connects 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. external screw joint type external screw joint 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 gaps, 12 Stem Muts, 13. handwheel, 14 Stem Mut tightening nuts, 15 keys, 16. Gland, 17. fillers, 18. times Packing seats.
In example shown in Figure 1: built-up welding Co base cemented carbide seal ring 2 on the external screw joint 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, external screw joint 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, valve rod 4 tops fit in the Stem Mut 12, 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 dual bellows arrangement 2 liftings of titanizing Austenitic Stainless Steel, 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.
Claims (3)
1. an external thread connecting type high-temperature resistant corrugated pipe stop valve comprises external screw joint type external screw joint type valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the external screw joint type valve body.
2. according to claims 1 described a kind of external thread connecting type high-temperature resistant corrugated pipe stop valve, it is characterized in that the active mechanical connection of the dual bellows arrangement of titanizing Austenitic Stainless Steel is below valve rod.
3. according to claims 1 described a kind of external thread connecting type high-temperature resistant corrugated pipe stop valve, it is characterized in that the external screw joint 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, the valve rod top fits over mechanical connection in the Stem Mut, 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 dual bellows arrangement lifting of titanizing Austenitic Stainless Steel, 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 |
|---|---|---|---|
| CNA2008100368130A CN101571198A (en) | 2008-04-29 | 2008-04-29 | External thread connecting type high-temperature resistant corrugated pipe stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100368130A CN101571198A (en) | 2008-04-29 | 2008-04-29 | External thread connecting type high-temperature resistant corrugated pipe stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571198A true CN101571198A (en) | 2009-11-04 |
Family
ID=41230630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100368130A Pending CN101571198A (en) | 2008-04-29 | 2008-04-29 | External thread connecting type high-temperature resistant corrugated pipe stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426038A (en) * | 2018-05-09 | 2018-08-21 | 盐城市大昌石化设备有限公司 | A kind of high-pressure resistant corrugated pipe shut-off valve |
-
2008
- 2008-04-29 CN CNA2008100368130A patent/CN101571198A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426038A (en) * | 2018-05-09 | 2018-08-21 | 盐城市大昌石化设备有限公司 | A kind of high-pressure resistant corrugated pipe shut-off valve |
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| 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: 20091104 |