CN1093450A - Full load high pressure hand-operated stop valve - Google Patents
Full load high pressure hand-operated stop valve Download PDFInfo
- Publication number
- CN1093450A CN1093450A CN 93112805 CN93112805A CN1093450A CN 1093450 A CN1093450 A CN 1093450A CN 93112805 CN93112805 CN 93112805 CN 93112805 A CN93112805 A CN 93112805A CN 1093450 A CN1093450 A CN 1093450A
- Authority
- CN
- China
- Prior art keywords
- poppet shaft
- high pressure
- outside diameter
- stop valve
- full load
- 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.)
- Granted
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Abstract
The invention discloses a kind of full load high pressure hand-operated stop valve.A full unloading cavity (A) is arranged on this valve, and the balance aperture (B) by poppet shaft 1 communicates the outside diameter d of the interstage sleeve 5 that moves about with the inlet that connects mouth 10
2Outside diameter d greater than poppet shaft 1
3, this valve reasonably utilizes the hundred-percent resistance that acts on the valve rod 7 that balances of medium self pressure, avoids valve rod 7 screw thread snap fasteners, improved working life, steering force reaches minimum value simultaneously, special light and flexible, poppet shaft 1 has been adopted special sealing and burn-out proof structure, and sealing is reliable.It is on the high pressure pipe line of the extremely strong helium of air, nitrogen or permeability up to 35MPa, working medium that the present invention is specially adapted to working pressure.
Description
The present invention relates to a kind of hand stop valve.
" a kind of high pressure balanced type stop valve " disclosed in Chinese patent 88 213508, it has a pressure balance mechanism, be the piston that is cooperated with valve seal by valve body, the pressing plate that the equalizing orifice of processing on the piston, counter balance pocket, piston lower end screw are connecting, valve gap and seal ring are formed.Purpose is to utilize medium self pressure balance to fall the opening and closing resistance, makes the operation light and flexible, but all resistances only balance 90 percent, and the high-pressure that the medium that still will bear a part does not have balance to brush lightly self is produced uses to still have inconvenience.
The objective of the invention is to avoid complete equilibrium to fall to act on the deficiency of the resistance on the valve in the above-mentioned prior art, and a kind of all gas pressure and burn-out proof, good airproof performance, long full load high pressure hand-operated stop valve of life-span of balancing is provided.
The object of the present invention is achieved like this: it is by poppet shaft, housing, fixedly interstage sleeve, o RunddichtringO, sleeve, valve rod, gland nut and handle are formed.By being contained in the sleeve on the poppet shaft and the interstage sleeve and dispose the sealing assembling of o RunddichtringO and constitute a full unloading cavity of moving about, this full unloading cavity directly and the balance aperture on the poppet shaft communicate the outside diameter d of the interstage sleeve that moves about
2Outside diameter d greater than poppet shaft
3, and the outside diameter d of the interstage sleeve that moves about
2Square with the little axle of the ladder of poppet shaft outside diameter d
1The difference of two squares equal the outside diameter d of poppet shaft
3Square, i.e. d
2
2-d
2
1=d
2
3Heat insulation throttle block is pressed in the poppet shaft, and the two interference fit fuses.
Adopt the structure of the interstage sleeve that moves about in the technique scheme, made the manufacturing assembling very convenient, especially adopted the outside diameter d of the interstage sleeve that moves about
2Outside diameter d greater than poppet shaft
3, and make d
2
2-d
2
1=d
2
3This structure, can utilize medium self pressure absolutely to balance the resistance that acts on the valve rod; Owing to adopted heat insulation throttle block to be pressed into the structure composition that poppet shaft fuses with it, avoided the ablation problem of poppet shaft sealing surface simultaneously.
The invention has the advantages that, because the present invention reasonably utilizes the pressure of medium self absolutely to balance the resistance that acts on the valve rod, avoid the threaded stem snap fastener, improved the working life of valve, make this valve steering force reach minimum value, special light and flexible, simultaneously, because poppet shaft adopts advanced soft seal of thermoplastic polyimide and burn-out proof structure, this valve is installed on the gas pipeline of pressure medium up to 35MPa, has just possessed good sealing property and burn-out proof, long characteristics of life-span.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Accompanying drawing is a full load high pressure hand-operated stop valve longitudinal sectional drawing of the present invention.
With reference to accompanying drawing, poppet shaft (1) is housed with connecing in the cavity that mouth (10) is linked to be whole housing (2), the valve end face of this poppet shaft (1) with connect mouth (10) and link to each other, d directly in the valve sealing strip
4Equal the outside diameter d of poppet shaft (1)
3, i.e. d
2
4=d
2
3Fixedly interstage sleeve (3), the interstage sleeve that moves about (5) and sleeve (6) are contained on the poppet shaft (1) successively and are furnished with o RunddichtringO (4) separately and be sealed and matched with it, form full unloading cavity (A) and also communicate with the inlet that connects mouth (10) by the "T"-shaped balance aperture (B) on the poppet shaft (1).Gland nut (8) is by the opening of screw threads for fastening in housing (2), one end of valve rod (7) handle (9) of packing into, the other end of valve rod (7) is threaded in the tapped hole that is screwed into gland nut, and the microcephaly of poppet shaft (1) holds in the T-slot hole that embeds valve rod (7).Poppet shaft (1) adopts the soft seal of thermoplastic polyimide, also have a heat insulation throttle block (11) to be pressed into poppet shaft (1) simultaneously, fuse with poppet shaft (1), interference fit between the two, heat insulation throttle block (11) is a Spielpassung with connecing the mouth hole, constituted a burn-out proof structure, guaranteed that valve continuous running under high pressure can not burn out more than 4000 times, still has good sealing property.This is because when the 35MPa high pressure air is given this valve suddenly, compressed high pressure air can only by heat insulation throttle block (11) with connect the narrow gap that cooperates between the mouth hole and the sealing surface on the poppet shaft (1) is produced impact and heat is transmitted, these gases that compressed heat energy increases, temperature raises, have only a very a spot of part can pass through matching gap, and heat is very fast lost, the very fast reduction of temperature is ablated so can not produce the poppet shaft sealing surface.
When this valve is in when cutting out or opening, it is (π/4d that working medium pressure directly produces end thrust upwards to poppet shaft (1)
2 3P), be passed to valve rod (7) by poppet shaft (1), simultaneously, medium self pressure that is entered full unloading cavity (A) by the balance aperture (B) of poppet shaft (1) produces downward end thrust (π/4d to the interstage sleeve that moves about (5)
2
2-π/4d
2
1) P is passed to valve rod (7) by poppet shaft (1).The d that the present invention adopts
2
2-d
2
1=d
2
3Such structure makes to act on making progress and the hundred-percent balance of downward pressure on the valve rod (7), causes by handle (9) manipulation valve rod (7) valve closing or opening force are all reached minimum value.
Claims (4)
1, a kind of full load high pressure hand-operated stop valve, it is by poppet shaft (1), housing (2), fixedly interstage sleeve (3), o RunddichtringO (4), sleeve (6), valve rod (7), gland nut (8) and handle (9) are formed, it is characterized in that: a full unloading cavity (A) is arranged on full load high pressure hand-operated stop valve, this full unloading cavity (A) is by being contained in sleeve (6) on the poppet shaft (1) and the interstage sleeve that moves about (5) and configuration o RunddichtringO (4) sealing assembling formation, its balance aperture (B) direct and on the poppet shaft (1) communicates the outside diameter d of the interstage sleeve that moves about (5)
2Outside diameter d greater than poppet shaft (1)
3, and make the outside diameter d of the interstage sleeve that moves about (5)
2Square with the little axle of the ladder of poppet shaft (1) outside diameter d
1The difference of two squares equal the outside diameter d of poppet shaft (1)
3Square, i.e. d
2 2-d
2 2=d
3 2, heat insulation throttle block (11) is pressed in the poppet shaft (1), interference fit between the two.
2, a kind of full load high pressure hand-operated stop valve according to claim 1 is characterized in that the balance aperture (B) on the poppet shaft (1) is "T"-shaped.
3, a kind of full load high pressure hand-operated stop valve according to claim 1 is characterized in that housing (2) and connects mouth (10) employing overall structure.
4, a kind of full load high pressure hand-operated stop valve according to claim 1 is characterized in that poppet shaft (1) adopts the soft seal of thermoplastic polyimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112805 CN1030412C (en) | 1993-12-23 | 1993-12-23 | Full load high pressure hand-operated stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112805 CN1030412C (en) | 1993-12-23 | 1993-12-23 | Full load high pressure hand-operated stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093450A true CN1093450A (en) | 1994-10-12 |
| CN1030412C CN1030412C (en) | 1995-11-29 |
Family
ID=4990278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93112805 Expired - Fee Related CN1030412C (en) | 1993-12-23 | 1993-12-23 | Full load high pressure hand-operated stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030412C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120528A (en) * | 2017-04-22 | 2017-09-01 | 张家港富瑞阀门有限公司 | A kind of integrated cylinder valve of novel high-pressure gas storage |
-
1993
- 1993-12-23 CN CN 93112805 patent/CN1030412C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120528A (en) * | 2017-04-22 | 2017-09-01 | 张家港富瑞阀门有限公司 | A kind of integrated cylinder valve of novel high-pressure gas storage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030412C (en) | 1995-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |