CN203743442U - Corrugated pipe sealing valve - Google Patents
Corrugated pipe sealing valve Download PDFInfo
- Publication number
- CN203743442U CN203743442U CN201420079225.6U CN201420079225U CN203743442U CN 203743442 U CN203743442 U CN 203743442U CN 201420079225 U CN201420079225 U CN 201420079225U CN 203743442 U CN203743442 U CN 203743442U
- Authority
- CN
- China
- Prior art keywords
- valve
- corrugated pipe
- gland
- valve gap
- seal
- Prior art date
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 15
- 238000012856 packing Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
A corrugated pipe sealing valve comprises a valve body and a corrugated pipe. A valve seat is fixed into the valve body. A valve element is arranged on the valve seat, and the valve seat and the valve element jointly form an opening and closing mechanism. A tubular valve deck is connected to the upper portion of the valve body. A seal ring is arranged in the middle of the valve body. The lower end of the valve deck is sleeved with a guide sleeve in a cold mode, and the guide sleeve is used for guiding the valve element vertically. A valve rod extending out of the tubular valve deck is fixedly connected to the upper portion of the valve element. The corrugated pipe is arranged in the valve rod in a sleeved mode. The upper end of the corrugated pipe is connected with a corrugated gland, and the lower end of the corrugated pipe is connected with a connecting block. The corrugated gland is connected to a middle cavity of the valve deck in a pressed mode through a threaded pressing block, the connecting block at the lower end of the corrugated pipe is fixed to the valve rod, and then a corrugated pipe sealing structure is formed. A temperature transition cavity is formed on the upper portion of the corrugated pipe sealing structure, namely an upper cavity of the valve deck. A temperature transition cavity is formed on the lower portion of the corrugated pipe sealing structure, namely a lower cavity of the valve deck. The corrugated pipe sealing valve has the advantages of being reasonable in structure, convenient to use, and capable of ensuring reliable sealing, conducting online detection of whether the corrugated pipe is broken or not and preventing the phenomena of coldness escape, packing locking and the like to the maximum extent.
Description
Technical field
The utility model relates to a kind of sylphon seal valve, especially a kind of valve being applicable in deep cooling operating mode, belongs to the mating valve parts in low temperature machinery.
Background technique
In deep cooling operating mode, the valve body of valve and valve gap are generally installed in insulation ice chest, and bonnet part is contained in ice chest outside.Common Bellows valve, the top that bellows structure operated by rotary motion is being taken over, this structure really also effectively control valve leak outside, but the medium in valve can likely be dipped into bellows place always, can approach filler place or bonnet place, after these cold media and heat exchange with outside, easily make the place's frosting of filler bonnet, make filler hold valve rod tightly, move up and down thereby affect valve; Moreover, the ice chest outer wall frosting that it also can cause bonnet and be connected with bonnet, strengthening cold undermining affects outward appearance.
Model utility content
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides one to be mainly used in all kinds of deep cooling operating modes, can prevent to greatest extent that valve from running cold, the sylphon seal valve of the phenomenons such as filler locking.
The purpose of this utility model completes by following technical solution, described sylphon seal valve, and it comprises a valve body, is fixed with a valve seat in valve body, disposes the spool that forms together opening/closing mechanism on this valve seat; Described valve body top is fixedly connected with long tubular valve gap by seal ring, and the cold cover in underpart of this valve gap has a guide sleeve leading up and down for spool, and the top of spool is fixed with the valve rod that extends long tubular valve gap; One is nested with the bellows in valve rod, its upper end is connected with ripple gland, lower end is connected with contiguous block, wherein ripple gland is crimped on the lumen of valve gap by a screw thread briquetting, lower end contiguous block is fixed on valve rod and forms corrugated tube sealing structure, at described corrugated tube sealing structure up and down, valve gap epicoele and cavity of resorption form respectively the cavity of one section of temperature transition.While adopting this structure can avoid valve to be used in deep cooling operating mode (100 ° of C are following), medium is all by sylphon seal cavity of resorption in valve gap, and epicoele has one section of cavity transition, ensures that bonnet is everywhere in consistent with ambient temperature, avoid the frosting of filler place, limiter valve runs cold to greatest extent.
Described bellows upper end by welded seal connect ripple gland, lower end also connects contiguous block by welded seal, described contiguous block is connected on valve rod by welded seal; Described screw thread briquetting is crimped on above ripple gland by a check washer, and described ripple gland bottom is crimped in the crimping flange collar in valve gap lumen by gasket seal.Described bellows and valve rod weld assembly adopt screw thread briquetting to fix, and have check washer to prevent thread looseness, can be subject to the pretightening force after low-temperature shrink by effective compensation material.
Described valve gap upper end portion is bolted the bonnet with filler part, between described valve gap and bonnet by lower levelling plate one anti-rotation device being made up of Anti-rotary block, screw and fixed block is installed, the Anti-rotary block that centre offers square hole is crimped in fixed block by screw, and valve rod is set on square hole shape in the square hole of described Anti-rotary block; Can limit the weld assembly such as bellows, valve rod by anti-rotation device and do rotation motion, can only move up and down, play the effect of protection bellows.
On described bonnet, be provided with leakage detection gas port, can detect online bellows and whether break; Described filler part is pressed in described bonnet by Gland; It can play emergent sealing on the one hand in the time of bellows bursts; Prevent that on the other hand extraneous moisture from directly contacting bellows, because moisture can freeze in the time of deep cooling operating mode, bellows just cannot normally be worked.
The utility model is mainly suitable in deep cooling operating mode, as in air separation equipment, and liquid air, the deep coolings such as liquid nitrogen (196 DEG C) medium; Whether it has rational in infrastructure, easy to use, can guarantee that valve seal is reliable, can detect online bellows and break, and prevent to greatest extent the features such as phenomenon such as valve race is cold, filler locking.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is anti-rotation device structural representation described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, sylphon seal valve described in the utility model, it comprises a valve body 1, is fixed with a valve seat 2 in valve body, disposes the spool 3 that forms together opening/closing mechanism on this valve seat; Described valve body 1 top is fixedly connected with long tubular valve gap 8 by seal ring 5, and the cold cover in underpart of this valve gap 8 has a guide sleeve leading up and down for spool, and the top of spool is fixed with the valve rod that extends long tubular valve gap; One is nested with the bellows 9 in valve rod, its upper end is connected with ripple gland 14, lower end is connected with contiguous block 10, wherein ripple gland 14 is crimped on the lumen of valve gap 8 by a screw thread briquetting 13, lower end contiguous block 10 is fixed on valve rod 4 and forms corrugated tube sealing structure, at described corrugated tube sealing structure up and down, valve gap epicoele and cavity of resorption form respectively the cavity of one section of temperature transition.
Described bellows 9 upper ends connect ripple gland 14, lower end by welded seal and also connect contiguous block 10 by welded seal, and described contiguous block 10 is connected on valve rod by welded seal; Described screw thread briquetting 13 is crimped on above ripple gland 14 by a check washer 12, and described ripple gland 14 bottoms are crimped in the crimping flange collar in valve gap lumen by gasket seal 22.
Shown in Fig. 2, described valve gap 8 upper end portions are bolted the bonnet 16 with filler part 11, between described valve gap 8 and bonnet 16 by lower levelling plate one anti-rotation device 15 being made up of Anti-rotary block 23, screw 24 and fixed block 25 is installed, the Anti-rotary block that centre offers square hole is crimped in fixed block 25 by screw 24, and valve rod 4 is set in the square hole of described Anti-rotary block with square hole shape.
On described bonnet, be provided with leakage detection gas port 20; Described filler part 11 is pressed in described bonnet 16 by Gland 19.
Shown in embodiment: Fig. 1,2, the utility model mainly comprises valve body 1, valve seat 2, spool 3, valve rod 4, seal ring 5, guide sleeve 6, double-screw bolt 7, valve gap 8, bellows 9, contiguous block 10, filler part 11, check washer 12, screw thread briquetting 13, ripple gland 14, anti-rotation device 15, bonnet 16, double-screw bolt A17, double-screw bolt B18, Gland 19, leakage detection gas port 20, pad 21, gasket seal 22.Ripple gland 14, bellows 9, contiguous block 10, spool 3 and valve rod 4 are welded into one, and are pressed in the lumen of valve gap 8 by screw thread briquetting 13, and ripple gland has for 14 times gasket seal 22 to prevent that body cavity medium from leaking outside, and forms corrugated tube sealing structure; Anti-rotation device 15 is made up of Anti-rotary block 23, sunk screw 24 and fixed block 25; Anti-rotary block 23 is pressed in fixed block 25 by sunk screw 24; composition anti-rotation machine 15; anti-rotation device 15 is fixedly pressed between bonnet 16 and valve gap 8; the side's of having body in Anti-rotary block 23, valve rod 4, at the also side's of having body of this section, can limit the weld assembly such as bellows 9, valve rod 4 by anti-rotation device 15 and do rotation motion; can only move up and down, play the effect of protection bellows 9.
Described bellows structure adopts screw thread briquetting 13 to be arranged on the lumen of valve gap 8, makes the epicoele of valve gap 8 keep one section of cavity.While adopting this structure can avoid valve to be used in deep cooling operating mode (100 ° of C are following), medium is all sealed in cavity of resorption in valve gap 8 by bellows 9, and epicoele has one section of cavity transition, ensures that bonnet 16 is in consistent with ambient temperature, avoid the frosting of filler place, limiter valve runs cold to greatest extent.Meanwhile, screw thread briquetting has for 13 times check washer 12 to prevent thread looseness, can be subject to the pretightening force after low-temperature shrink by effective compensation material
On described bonnet 16, with leakage detection gas port 20, can detect online bellows 9 and whether break.Filler part 11 is housed on bonnet 16, is pressed in bonnet 16 by Gland 19, can in the time that bellows 9 breaks, play on the one hand emergent sealing; Prevent that on the other hand extraneous moisture from directly contacting bellows 9, because moisture can freeze in the time of deep cooling operating mode, bellows 9 just cannot normally be worked, and loses rebound elasticity.
Valve seat 2 is fixed on valve body 1 by engage thread, and valve seat 2 forms open-shut device with spool 3; Valve body 1 is connected by double-screw bolt 7 with valve gap 8, and there is seal ring 5 centre, plays seal action; Guide sleeve 6 is cold to be enclosed within valve gap 8, moves up and down to spool 3 and does leading role; Bonnet 16 is connected by double-screw bolt B18 with valve gap 8, and centre is pressed with anti-rotation device 15, and anti-rotation device has gasket seal 22 up and down.
Claims (4)
1. a sylphon seal valve, it comprises a valve body, is fixed with a valve seat in valve body, disposes the spool that forms together opening/closing mechanism on this valve seat; It is characterized in that described valve body (1) top is connected with long tubular valve gap (8), there is seal ring (5) centre, be fixedly connected with long tubular valve gap (8), the cold cover in underpart of this valve gap (8) has a guide sleeve leading up and down for spool (6), and the top of spool (3) is fixed with the valve rod (4) that extends long tubular valve gap; One is nested with the bellows (9) in valve rod (4), its upper end is connected with ripple gland (14), lower end is connected with contiguous block (10), wherein ripple gland (14) is crimped on the lumen of valve gap (8) by a screw thread briquetting (13), lower end contiguous block (10) is fixed on valve rod (4) and goes up and form corrugated tube sealing structure, at described corrugated tube sealing structure up and down, valve gap epicoele and cavity of resorption form respectively the cavity of one section of temperature transition.
2. sylphon seal valve according to claim 1, it is characterized in that described bellows (9) upper end connects ripple gland (14), lower end by welded seal and also connects contiguous block (10) by welded seal, described contiguous block (10) is connected on valve rod (4) by welded seal; Described screw thread briquetting (13) is crimped on ripple gland (14) above by a check washer (12), and described ripple gland (14) bottom is crimped on the trim ring in valve gap lumen by gasket seal (22).
3. sylphon seal valve according to claim 1 and 2, it is characterized in that described valve gap (8) upper end portion is bolted the bonnet (16) with filler part (11), between described valve gap (8) and bonnet (16), be provided with one by Anti-rotary block (23) by upper lower levelling plate, the anti-rotation device (15) of screw (24) and fixed block (25) composition, the Anti-rotary block (23) that centre offers square hole is crimped in fixed block (25) by screw (24), valve rod (4) is set in the square hole of described Anti-rotary block (23) with square hole shape.
4. sylphon seal valve according to claim 3, is characterized in that being provided with leakage detection gas port (20) on described bonnet (16); Described filler part (11) is pressed in described bonnet (16) by Gland (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079225.6U CN203743442U (en) | 2014-02-25 | 2014-02-25 | Corrugated pipe sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079225.6U CN203743442U (en) | 2014-02-25 | 2014-02-25 | Corrugated pipe sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743442U true CN203743442U (en) | 2014-07-30 |
Family
ID=51343243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079225.6U Expired - Lifetime CN203743442U (en) | 2014-02-25 | 2014-02-25 | Corrugated pipe sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821948A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Bellows seal valve |
-
2014
- 2014-02-25 CN CN201420079225.6U patent/CN203743442U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821948A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Bellows seal 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |