CN2637835Y - Hydraulic, air pressure self-balancing stop valve - Google Patents
Hydraulic, air pressure self-balancing stop valve Download PDFInfo
- Publication number
- CN2637835Y CN2637835Y CN 03278053 CN03278053U CN2637835Y CN 2637835 Y CN2637835 Y CN 2637835Y CN 03278053 CN03278053 CN 03278053 CN 03278053 U CN03278053 U CN 03278053U CN 2637835 Y CN2637835 Y CN 2637835Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- stop valve
- utility
- 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 - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model discloses a liquid gas pressure self-balance stop valve, containing a valve body, a valve clack, a seal ring, a chuck ring, a valve cover, a valve stem, etc. The utility model is characterized in that: a channel whose upper end surface is provided with a seal surface is positioned in the valve body; the valve clack whose lower end surface is provided with a seal surface is arranged in the vanity of the valve body and provided with a balance hole; the seal ring is arranged in a circular groove formed by the upper vanity of the valve body, the excircle of the valve clack and the chuck ring; the valve stem goes through the valve cover, the lower end of the valve stem is movably connected with the valve clack and the valve cover and the valve body are fixedly connected with each other. The utility model improves the valve body of the current stop valve, therefore, the inner structure of the current stop valve is only needed changing to realize pressure self-balance of the stop valve; besides the utility model can be widely applied to various pressure pipe in petrochemical industry, oilfield, metallurgy and thermal power plant, and is especially suitable for the large path high temperature and high pressure pipe that the current stop valve can not apply.
Description
One, affiliated technical field
The utility model relates to a kind of stop valve, particularly a kind of liquid, gas pressure self-balancing stop valve.
Two, background technique
Ducted stop valves such as petrochemical industry, oil field, metallurgy and thermoelectricity plant mainly are made up of valve body, flap, valve gap and valve rod etc.When this stop valve is closed, because the pressure medium of valve body inlet acts on flap one side, and be directly delivered on the operating valve lever, operate very difficult, its degree is aggravated with the rising of pipeline medium pressure and the increase of valve latus rectum, have a strong impact on the sealability and the operability of valve, also restricted the application of stop valve on high pressure, big latus rectum pipeline.In order to address this problem, a kind of plunger type self balancing stop valve has appearred, because the seal ring of this valve is arranged in the groove between plunger and valve body, rely on the elasticity and the density of seal ring self to reach seal request, the sealing material that can satisfy this performance requirement at present is a rubber etc. only, so this valve is not suitable for the media environment of higher temperature.
Three, summary of the invention
The purpose of this utility model is to provide a kind of liquid, gas pressure self-balancing stop valve that can be used for the high temperature media environment, its realizes liquid, the pneumatic self-balance characteristic of flap under the condition that is not increasing existing stop valve valve body, make that valve operation is very light, good seal performance, the media environment that can be used for all temps, reliable operation and method for making be easy.
In order to achieve the above object, the utility model liquid, gas pressure self-balancing stop valve comprises valve body, flap, equalizing orifice, seal ring, pressure ring, valve gap and valve rod, this liquid, gas pressure self-balancing stop valve is to be provided with passage in valve body, on the upper-end surface of passage, be provided with sealing surface, flap is arranged in the body cavity, the flap lower end surface is provided with sealing surface, also be provided with equalizing orifice on the flap, seal ring is arranged in the annular groove that is constituted between valve body epicoele and flap cylindrical and the pressure ring, valve rod passes valve gap, the valve rod underpart connects with flap is movable, and valve gap and valve body are fixedly connected.
The pressure ring of above-mentioned liquid, gas pressure self-balancing stop valve is arranged in the valve body epicoele, its role is to push tight seal.Above-mentioned liquid, gas pressure self-balancing stop valve be set sealing surface on flap, and it is shaped as conical surface, plane or sphere.Above-mentioned liquid, gas pressure self-balancing stop valve set sealing surface on valve body, it is shaped as conical surface, plane or sphere.
Principle of the present utility model is: when stop valve of the present utility model with after pressure piping connects, stop valve is in closed condition, flap is under the promotion of valve rod, on the flap lower end surface on set sealing surface and the valve channel upper-end surface set sealing surface be adjacent to, when pressure medium when the valve body upper channel enters, medium can't be from flowing to the valve body lower channel between the sealing surface and between flap cylindrical and the seal ring, this moment liquid, atmospheric pressure acts on the circumferential surface of flap, the radial force that flap forms is cancelled each other, axial force to flap is zero, make flap be in pressure self balancing state, when pressure medium when the valve body lower channel enters, medium can't be from flowing to upper channel between the sealing surface and between flap cylindrical and the seal ring, this moment liquid, atmospheric pressure acts on the lower end surface of flap, and be passed to valve body by set equalizing orifice on the flap, valve gap connects the upper-end surface that the chamber acts on flap, form the opposite self balancing power of a pair of direction along axially going up of flap, when the utility model is in opening process, under the pulling of valve rod, flap is raised until the complete opening valve.
The utility model compared with prior art, its remarkable advantage is: 1, suitable environment is good, is not only applicable to the generic media environment, also is specially adapted to the high temperature media environment; 2, good operation performance, the self balancing technology is used, and makes valve operation moment only be 1/10th of traditional stop valve; 3, good seal performance has improved the sealing reliability of valve under High Temperature High Pressure effectively, significant prolongation the sealing life of valve; 4, two-way flow is good, and novel valve has changed the shortcoming that existing stop valve can only one-way flow, but two-way flow arbitrarily control, expanded the application of stop valve; 5, good cost performance, novel valve manually series are lower than conventional valve cost, and mortor operated valve series is lower by 30% than the conventional valve cost, makes product have the very strong market competitiveness.
Four, description of drawings
Accompanying drawing is a kind of structural representation of liquid of the present utility model, gas pressure self-balancing stop valve.
Five, embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment.In conjunction with the accompanying drawings, the utility model mainly is made up of valve body 1, flap 4, equalizing orifice 5, seal ring 6, pressure ring 7, valve gap 10, valve rod 11 etc.Be provided with passage 20 in the valve body 1, be provided with sealing surface 2 on the upper-end surface of passage 20, it is shaped as conical surface, plane or sphere; Flap 4 is arranged in valve body 1 inner chamber 15, flap 4 lower end surfaces 17 are provided with sealing surface 19, it is shaped as conical surface, plane or sphere, constitute sealing with set sealing surface 2 on the valve body 1, flap 4 is provided with equalizing orifice 5, makes valve body 1 lower channel 18 that places 17 belows, flap 4 lower end surfaces connect chamber 9 with the valve body, the valve gap that place 12 tops, flap 4 upper-end surfaces and links up; Seal ring 6 is arranged in the annular groove that is constituted between valve body 1 epicoele 14 of valve body upper channel 3 upsides and flap 4 cylindricals 16 and the pressure ring 7, and compresses seal ring 6 by pressure ring 7 lower end surfaces 13, makes that obtaining motive sealing between flap 4 cylindricals 16 and the seal ring 6 connects; Pressure ring 7 is arranged in valve body 1 epicoele 14, and is pressed on the seal ring 6 by the compressing member 8 that is fixed on the valve body 1; Valve rod 11 passes valve gap 10, and 4 movable connections of valve rod 11 underparts and flap, valve rod 11 portability flaps 4 move up and down in valve body 1 inner chamber 15, the unlatching of formation stop valve or close; Valve gap 10 is fixedly connected with valve body 1.When the upper and lower unanimity of cylindrical 16 sizes of flap 4, its using effect the best.
Claims (4)
1, a kind of liquid, gas pressure self-balancing stop valve, it comprises valve body [1], flap [4], equalizing orifice [5], seal ring [6], pressure ring [7], valve gap [10], valve rod [11], it is characterized in that being provided with in the valve body [1] passage [20], on passage [20] upper-end surface, be provided with sealing surface [2], flap [4] is arranged in valve body [1] inner chamber [15], flap [4] lower end surface [17] is provided with sealing surface [19], also be provided with equalizing orifice [5] on the flap [4], seal ring [6] is arranged in the annular groove that is constituted between valve body [1] epicoele [14] and flap [4] cylindrical [16] and the pressure ring [7], valve rod [11] passes valve gap [10], valve rod [11] underpart connects with flap [4] is movable, and valve gap [10] is fixedly connected with valve body [1].
2, liquid according to claim 1, gas pressure self-balancing stop valve, the pressure ring [7] that it is characterized in that pushing tight seal [6] is arranged in valve body [1] epicoele [14].
3, liquid according to claim 1 and 2, gas pressure self-balancing stop valve is characterized in that upward set sealing surface [19] of flap [4], and it is shaped as conical surface, plane or sphere.
4, liquid according to claim 1 and 2, gas pressure self-balancing stop valve is characterized in that upward set sealing surface [2] of valve body [1], and it is shaped as conical surface, plane or sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278053 CN2637835Y (en) | 2003-08-27 | 2003-08-27 | Hydraulic, air pressure self-balancing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278053 CN2637835Y (en) | 2003-08-27 | 2003-08-27 | Hydraulic, air pressure self-balancing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2637835Y true CN2637835Y (en) | 2004-09-01 |
Family
ID=34303127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03278053 Expired - Fee Related CN2637835Y (en) | 2003-08-27 | 2003-08-27 | Hydraulic, air pressure self-balancing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2637835Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806363A (en) * | 2010-04-30 | 2010-08-18 | 南京理工大学 | High-pressure high-temperature two-way balance stop valve |
| CN106051171A (en) * | 2016-06-08 | 2016-10-26 | 中国船舶重工集团公司第七二五研究所 | Pressure self-balanced type stop check valve |
-
2003
- 2003-08-27 CN CN 03278053 patent/CN2637835Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806363A (en) * | 2010-04-30 | 2010-08-18 | 南京理工大学 | High-pressure high-temperature two-way balance stop valve |
| WO2011134400A1 (en) | 2010-04-30 | 2011-11-03 | 南京理工大学 | Bidirectional pressure self balancing stop valve |
| US8794592B2 (en) | 2010-04-30 | 2014-08-05 | Jun Zhou | Bidirectional pressure self-balancing stop valve |
| EP2565500A4 (en) * | 2010-04-30 | 2015-11-18 | Suzhou Yare Valve Co Ltd | Bidirectional pressure self balancing stop valve |
| CN106051171A (en) * | 2016-06-08 | 2016-10-26 | 中国船舶重工集团公司第七二五研究所 | Pressure self-balanced type stop check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040901 Termination date: 20120827 |