CN201193711Y - Supercritical pneumatic draining valve - Google Patents
Supercritical pneumatic draining valve Download PDFInfo
- Publication number
- CN201193711Y CN201193711Y CNU2008200795278U CN200820079527U CN201193711Y CN 201193711 Y CN201193711 Y CN 201193711Y CN U2008200795278 U CNU2008200795278 U CN U2008200795278U CN 200820079527 U CN200820079527 U CN 200820079527U CN 201193711 Y CN201193711 Y CN 201193711Y
- Authority
- CN
- China
- Prior art keywords
- valve
- pneumatic
- seat
- super
- critical
- 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
Links
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 14
- 238000012856 packing Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model provides a super-critical pneumatic hydrophobic door; a valve is provided with a valve seat by a sealing ring; the valve seat is positioned and connected with a valve housing by a spigot; a valve stem is arranged in the valve housing and connected with a valve clack on the valve stem by thread; the other end of the valve stem is connected with a pneumatic device. The super-critical pneumatic hydrophobic door solves the difficulty that the overlaying welding process of super-critical unit valves and valve high-temperature material F91, makes up for the difficulty of the different coaxiality of the valve clack and the valve seat, effectively prevents the erosion of high-temperature media to sealing pairs, so that the returning rate of the valve clack reaches 100 percent; the pneumatic structure controls the valve stem to move up and down by the cooperation of a limiter and a travel switch, so as to realize the automatic control of the super-critical hydrophobic door.
Description
Technical field
The utility model relates to a kind of valve, specifically is a kind of overcritical pneumatic hydrophobic door.
Background technique
Overcritical hydrophobic door in the market generally all is to adopt handwheel manually to control, and the staff needs round-the-clock guard, wastes time and energy; In addition, existing overcritical hydrophobic door returns at flap in the control of a rate can only reach 80% at most, and it is uncontrollable to return the seat rate, will cause poorly sealedly, causes the erosion of high temperature media to sealing pair easily, influence hydrophobic working life.
The model utility content
The utility model provides a kind of can prevent effectively that high temperature media from returning a rate to sealing pair erosion, flap and reaching 100% overcritical pneumatic hydrophobic door.
In order to solve above technical problem, a kind of overcritical pneumatic hydrophobic door of the present utility model by the guide plate that connects on support, the support, passes the valve rod of guide plate, and entangles Gland, filler, Packing seat and the valve pocket composition of valve rod; By the built-in valve seat of seal ring, be located by connecting by seam and valve pocket on valve seat in the described valve body, valve stem casing is in valve pocket, and rib-loop connects flap on valve rod; The other end of described valve rod is connected with Pneumatic actuator.
Be fixed with snubber on the described valve rod.
Be fixed with upper and lower stroke switch on the described support.
The advantage of above structure is:
1, adopts in valve body with the built-in valve seat of seal ring, make valve seat become activity can regulate valve seat, solved the difficult problem of supercritical unit valve, valve body high temperature material F91 bead-welding technology poor-performing.
2, flap adopts the valve pocket positioning guiding structure, because the matching gap between flap and the valve pocket is less than the matching gap between valve seat and the valve body, remedied the difficult problem of flap and valve seat coaxiality deviation, effectively prevented the erosion of high temperature media, made the seat rate of returning of flap reach 100% sealing pair.
3, adopt pneumatic structure, control moving up and down of valve rod, realized the automation control of overcritical hydrophobic door by the cooperation of snubber and position limit switch.
Description of drawings
Figure is a structural representation of the present utility model.
Embodiment
As shown in the figure, Pneumatic actuator 1 is bearing on the support 2, and is connected with valve rod 3.At the upper end of valve rod 3 fixed limit device 4, cooperate the stroke up and down of controlling valve rod 3 with position limit switch 5 on the support 2.At the lower end of support 2 nut fixed guide plate 6, valve rod 3 passes guide plate 6, and guide plate 6 plays the guide and limit effect to it.
Be valve body 7 below support 2, in valve body 7, be provided with runner 8.By seal ring 9 built-in valve seats 10, valve seat 10 leaves matching gap with valve body 7 in valve body 7.On valve seat 10 by the seam valve pocket 11 that is located by connecting, pad Packing seat 12 on the valve pocket 11, on Packing seat 12 filler, add Gland 13, be connected with valve body 7 with thick hexagonnut 15 by swing bolt 14.Above-mentioned valve pocket 11, Packing seat 12, filler and Gland 13 are visual as a whole, and valve rod 3 passes wherein, and connect flap 16 at the lower end of valve rod 3 rib-loop, and the sealing surface of the sealing surface of described flap 16 and valve seat 10 coincide in theory.Stay certain matching gap between integral body that above-mentioned valve pocket 11, Packing seat 12, filler and Gland 13 are formed and the valve rod 3, but this gap is littler than the gap between valve seat 10 and the valve body 7.When situation that misfitting appears in the sealing surface of the sealing surface of flap 16 and valve seat 10, promptly flap return seat can not situation under, just need the guiding of valve pocket 11 this moment.This guiding is achieved in that when the sealing surface of the sealing surface of flap 16 and valve seat 10 need seal, Pneumatic actuator 1 just starts, to pressing down valve rod 3 to position limit switch 5 places, at this moment, Gland 13 is also depressed filler, Packing seat 12 and valve pocket 11 integral body downwards, but because the matching gap between valve rod 3 and this integral body that presses down is less than the matching gap between valve body 7 and the valve seat 10, so, can remedy the eccentric error that causes between valve pocket 11 and the flap 16 by the matching gap between valve body 7 and the valve seat 10, realize 16 times seat rates 100% of flap.
Claims (3)
1. one kind overcritical pneumatic hydrophobic, by the guide plate that connects on support, the support, pass the valve rod of guide plate, and the Gland, filler, Packing seat and the valve pocket that entangle valve rod are formed, it is characterized in that: pass through the built-in valve seat of seal ring in the described valve body, be located by connecting by seam and valve pocket on valve seat, valve stem casing is in valve pocket, and rib-loop connects flap on valve rod; The other end of described valve rod is connected with Pneumatic actuator.
2. a kind of overcritical pneumatic hydrophobic door according to claim 1 is characterized in that: be fixed with snubber on the described valve rod.
3. a kind of overcritical pneumatic hydrophobic door according to claim 1 is characterized in that: be fixed with upper and lower stroke switch on the described support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200795278U CN201193711Y (en) | 2008-03-21 | 2008-03-21 | Supercritical pneumatic draining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200795278U CN201193711Y (en) | 2008-03-21 | 2008-03-21 | Supercritical pneumatic draining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193711Y true CN201193711Y (en) | 2009-02-11 |
Family
ID=40393246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200795278U Expired - Fee Related CN201193711Y (en) | 2008-03-21 | 2008-03-21 | Supercritical pneumatic draining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193711Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606750A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I electric cobalt-free modularized stop valve |
| CN104896113A (en) * | 2015-04-28 | 2015-09-09 | 山东菲特自控阀门制造有限公司 | Novel serially-connected blowdown valve |
-
2008
- 2008-03-21 CN CNU2008200795278U patent/CN201193711Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606750A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I electric cobalt-free modularized stop valve |
| CN104896113A (en) * | 2015-04-28 | 2015-09-09 | 山东菲特自控阀门制造有限公司 | Novel serially-connected blowdown 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: 20090211 Termination date: 20140321 |