CN1148677A - Balance type plunger stop valve preventing internal and outernal leakage - Google Patents
Balance type plunger stop valve preventing internal and outernal leakage Download PDFInfo
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- CN1148677A CN1148677A CN 95113313 CN95113313A CN1148677A CN 1148677 A CN1148677 A CN 1148677A CN 95113313 CN95113313 CN 95113313 CN 95113313 A CN95113313 A CN 95113313A CN 1148677 A CN1148677 A CN 1148677A
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Abstract
The balanced leak-proof plunger shutoff valve includes valve body, valve cover, valve plug and seal ring. In particular, a balancing cavity is formed in the inner cavity of the valve cover, and an equalizing hole on the valve plug can be used to make the pressure of the medium above the valve plug and the pressure of the medium below the valve plug equal. When the valve is opened or closed, its upper pressure and lower pressure are equalized, so that said valve operation is smooth, stable and nimble. Said invented product is specially applicable to large-aperture used under the condition of large pressure oscillation and poor operating mode.
Description
The present invention relates to a kind of balance type plunger stop valve preventing internal and outernal leakage that is used to control various fluid floies.
In the prior art, I applied on May 24th, 90, the patent No. is 902072684 " internal and external leakproof plunger stop valve " and application on November 9th, 94, application number is 94239630.8 the plunger stop valve preventing internal and outernal leakage of core sleeve " band ", stable operation problem when the internal and outernal leakage problem that has successively solved valve is not vertical the installation with valve body.But when the valve body bore surpasses Φ 200mm, especially big in the medium pressure liquid fluctuation, use under the unsettled situation of operating mode, can produce vibration during the valve break-make, and valve operation moment is bigger.
The object of the present invention is to provide a kind of large bore valves big in pressure surge, still can balance when operating mode is unstable, the balanced type Plunger Globe Valve of spry and light operation.
To achieve these goals, the invention provides a kind of balance type plunger stop valve preventing internal and outernal leakage, comprise a valve body, its inner chamber forms the import and export passage that communicates; One group of valve gap after being connected as one with bolt by last bottom flange, is fixed on the described valve body by fastening piece, and bonnet is provided with Stem Mut, and the Stem Mut upper end is fixed with a handwheel; A valve rod moving up and down, spinning is on Stem Mut, and its underpart is passed bottom flange and stretched into described body cavity, and the underpart is connected with a valve plug, the valve plug lower end is a garden platform shape, and can be positioned at the metallic packing ring that fuses with valve body of importing and exporting the passage jointing place and coincide; One guide sleeve is fixed in described body cavity, and close valve plug moving up and down of joining is housed in its endoporus; One puts seal ring is arranged between bottom flange internal chamber wall and the valve rod and by sealing nut and compresses, and communicates with inlet passage, and a cover lower seal is arranged between valve body top internal chamber wall and the valve plug, and imports and exports channel separation, and is compressed by bolt by bottom flange.It is characterized in that forming between bottom flange inner chamber and the valve plug upper-end surface counter balance pocket (15); Vertically be provided with several equalizing orifices (9) between the valve plug upper and lower end.
The present invention compared with prior art has at valve aperture greatlyyer, and pressure medium fluctuation is big, and the operating mode instability condition is when using down, still can be steady, and the advantage of spry and light operation.
Brief description of drawings:
Fig. 1 is the structure principle chart of embodiment of the present invention.
Embodiment of the present invention are: referring to Fig. 1. (1) is valve body among the figure; (2) be bottom flange, it has the inner chamber form counter balance pocket of hollow; (3) be bonnet; (4) be valve rod; (5) be handwheel, be fixed on the Stem Mut; (6) be valve plug, its Lower Half forms cavity (16), communicates with the inlet passage medium, can alleviate the weight of valve plug; (7) be guide sleeve, valve plug can move up and down within it easily; (8) be lower seal, vertically built up by two O-ring sheets that the pressure of the connecting bolt between dependence bottom flange and the valve body is adjusted the gap with valve plug, its adopts rebound elasticity strong, and the malicious material in sky that wear resistance is high is made to prevent external leakage; (9) be arranged on equalizing orifice on the valve plug, generally have 2 to 4, its existence makes the Lower Half cavity (16) of valve plug communicate with the counter balance pocket (15) of bottom flange, and pressure medium equates; (10) be the metallic packing ring that fuses with valve body, the garden platform shape of it and valve plug lower end fits like a glove, and can effectively prevent internal leakage; (11) be snubber, be in the bonnet inner chamber, can prolong valve rod and move up and down, also can in bonnet inner chamber scope, be fixed on arbitrarily on the valve rod, to make the vertical constraints of valve opening size; (12) be Stem Mut, on its vertical fixing bonnet, but can rotate that valve rod then moves up and down with the rotation of handwheel, reaches the purpose of switch valve with handwheel; (13) be sealing nut, spinning is regulated the gap of seal ring (14) and valve rod (4) by impacting force, because bottom flange endoporus and valve rod crest clearance are bigger on bottom flange, above seal ring is vertically built up by three O-ring sheets, to reach good anti-external leakage effect.During use, because interior the pressure medium of counter balance pocket (15) equates that with inlet (16) pressure medium open gradually at valve, the interior medium of counter balance pocket will be by equalizing orifice (9) inflow import, valve does not impact sense.When valve is closed gradually, the medium of inlet will flow in the counter balance pocket by equalizing orifice, and last downforce is in state of equilibrium all the time, make valve operation steadily spry and light, and the valve plug polarization is good, no impact shock sense.
Claims (2)
1. a balance type plunger stop valve preventing internal and outernal leakage comprises a valve body, and its inner chamber forms the import and export passage that communicates; One group of valve gap after being connected in one with bolt by last bottom flange, is fixed on the described valve body by fastening piece, and bonnet is provided with Stem Mut, and the Stem Mut upper end is fixed with a handwheel; A valve rod moving up and down, spinning is on Stem Mut, and its underpart is passed bottom flange and stretched into described body cavity, and the underpart is connected with a valve plug, the valve plug lower end is a garden platform shape, and can import and export the metallic packing ring that passage jointing place and valve body fuse and coincide with being positioned at; One guide sleeve is fixed on described body cavity, and close valve plug moving up and down of joining is housed in its endoporus; One puts seal ring is arranged between bottom flange internal chamber wall and the valve rod and by sealing nut and compresses, communicate with inlet passage, one cover lower seal is arranged between valve body top internal chamber wall and the valve plug, with the import and export channel separation, and compress by bolt by bottom flange, it is characterized in that forming between bottom flange inner chamber and the valve plug upper-end surface counter balance pocket; Vertically be provided with several equalizing orifices between the valve plug upper and lower end.
2. Plunger Globe Valve according to claim 1, its feature also are to fix a vertical snubber on the valve rod at bonnet inner chamber place; The valve plug Lower Half forms cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95113313 CN1148677A (en) | 1995-10-24 | 1995-10-24 | Balance type plunger stop valve preventing internal and outernal leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95113313 CN1148677A (en) | 1995-10-24 | 1995-10-24 | Balance type plunger stop valve preventing internal and outernal leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1148677A true CN1148677A (en) | 1997-04-30 |
Family
ID=5079929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95113313 Pending CN1148677A (en) | 1995-10-24 | 1995-10-24 | Balance type plunger stop valve preventing internal and outernal leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1148677A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375856C (en) * | 2004-12-28 | 2008-03-19 | 何永水 | Balance type valve of electric valve |
| CN101907174A (en) * | 2010-07-22 | 2010-12-08 | 九江中船长安消防设备有限公司 | Valve |
| WO2011134400A1 (en) * | 2010-04-30 | 2011-11-03 | 南京理工大学 | Bidirectional pressure self balancing stop valve |
| CN102563090A (en) * | 2011-12-16 | 2012-07-11 | 杭州春江阀门有限公司 | Sleeve type stop valve |
| CN102853087A (en) * | 2012-07-25 | 2013-01-02 | 盐城市中液液压件有限公司 | Pressure balancing high-pressure stop valve |
| CN103322207A (en) * | 2013-06-14 | 2013-09-25 | 刘工勤 | Micro-strength switching valve |
| CN103953734A (en) * | 2014-05-05 | 2014-07-30 | 杨元清 | Angle type plunger valve |
| CN113090771A (en) * | 2021-05-08 | 2021-07-09 | 威仕喜(浙江)流体技术有限公司 | Direct-acting electromagnetic valve |
-
1995
- 1995-10-24 CN CN 95113313 patent/CN1148677A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375856C (en) * | 2004-12-28 | 2008-03-19 | 何永水 | Balance type valve of electric valve |
| WO2011134400A1 (en) * | 2010-04-30 | 2011-11-03 | 南京理工大学 | Bidirectional pressure self balancing stop valve |
| RU2559216C2 (en) * | 2010-04-30 | 2015-08-10 | Сужоу Яре Вальве Ко., Лтд. | Bidirectional self-balancing shutdown pressure valve |
| CN101907174A (en) * | 2010-07-22 | 2010-12-08 | 九江中船长安消防设备有限公司 | Valve |
| CN102563090A (en) * | 2011-12-16 | 2012-07-11 | 杭州春江阀门有限公司 | Sleeve type stop valve |
| CN102853087A (en) * | 2012-07-25 | 2013-01-02 | 盐城市中液液压件有限公司 | Pressure balancing high-pressure stop valve |
| CN103322207A (en) * | 2013-06-14 | 2013-09-25 | 刘工勤 | Micro-strength switching valve |
| CN103953734A (en) * | 2014-05-05 | 2014-07-30 | 杨元清 | Angle type plunger valve |
| CN113090771A (en) * | 2021-05-08 | 2021-07-09 | 威仕喜(浙江)流体技术有限公司 | Direct-acting electromagnetic valve |
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