CN201779292U - Labyrinth pneumatic regulating valve - Google Patents
Labyrinth pneumatic regulating valve Download PDFInfo
- Publication number
- CN201779292U CN201779292U CN2010202863671U CN201020286367U CN201779292U CN 201779292 U CN201779292 U CN 201779292U CN 2010202863671 U CN2010202863671 U CN 2010202863671U CN 201020286367 U CN201020286367 U CN 201020286367U CN 201779292 U CN201779292 U CN 201779292U
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- CN
- China
- Prior art keywords
- valve
- labyrinth
- cage
- gasket
- bolt
- 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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Abstract
The utility model discloses a labyrinth pneumatic regulating valve, which comprises elements such as a valve body, a first gasket, a valve seat, a labyrinth valve cage, an adjusting sleeve, a sealing ring, a second gasket, a valve cap, a valve core, a valve cap flange, a guide tube, a squeezing prevention gasket, a double end stud and the like, wherein the valve seat is arranged in the valve body, the first gasket is used for sealing between the valve seat and the valve body, the labyrinth valve cage is positioned by the step of the valve seat, the two sides of the adjusting sleeve are positioned by the valve body and the labyrinth valve cage respectively, the sealing ring is positioned between the adjusting sleeve and the labyrinth valve cage, the second gasket is positioned between the adjusting sleeve and the valve cap, the valve core is guided by the guide tube, the adjusting sleeve and the labyrinth valve cage, the valve cap flange is fixed by the double end stud, the guide tube is positioned by a shaft hole inside the valve cap, the squeezing prevention gasket is arranged above the guide tube, a filler spacing sleeve is positioned above the squeezing prevention gasket, a filler pressure plate is locked on a support clamp by a second bolt, and the support clamp is fixed on the valve cap by a first bolt. The labyrinth pneumatic regulating valve provided by the utility model can achieve staged depressurization.
Description
Technical field
The utility model relates to a kind of modulating valve, particularly a kind of pneumatic mazy type modulating valve.
Background technique
Pneumatic mazy type modulating valve can be applicable in the system under the harsh working condition, as thermal power plant, nuclear power station, heating system and other high temperature, high pressure water and vapour system.Pneumatic mazy type modulating valve is made up of valve member, actuator, positioning work piece and tracheae annex.Existing pneumatic mazy type modulating valve can not the classification step-down.
The model utility content
Technical problem to be solved in the utility model provides a kind of pneumatic mazy type modulating valve, and it can realize the classification step-down.
For solveing the technical problem, the utility model provides a kind of pneumatic mazy type modulating valve, it is characterized in that, it comprises valve body, first pad, valve seat, the labyrinth valve cage, adjust cover, seal ring, second pad, valve gap, spool, bonnet flange, guide pipe, the anti-extrusion pad, stud, the filler disrance sleeve, the support folder, hold-down grid, first bolt and second bolt, valve seat is located at the inside of valve body, the centre of valve seat and valve body is by first gasket seal, the labyrinth valve cage is by the step location of valve seat, the both sides of adjusting cover are respectively by valve body and labyrinth valve cage location, seal ring is being adjusted between cover and the labyrinth valve cage, second pad is being adjusted between cover and the valve gap, spool is by guide pipe, adjusting cover and labyrinth valve cage leads, bonnet flange is fixed by stud, guide pipe is by the axis hole location of valve gap inside, the anti-extrusion pad is positioned at the top of guide pipe, the filler disrance sleeve is positioned at the top of anti-extrusion pad, hold-down grid is lock onto on the support folder by second bolt, and support presss from both sides by first bolt on valve gap.
Positive progressive effect of the present utility model is: the utility model adopts the labyrinth valve cage that fluid is separated into many shuntings, to reduce quality and energy rank as far as possible, each fluid passage all is made up of the right-angled bend of specific quantity, and formation labyrinth path, in this process, each pressure of turning all flowing medium reduces by one more than the velocity head, realizes truly classification step-down with this.
Description of drawings
Fig. 1 is the internal structure schematic representation of the pneumatic mazy type modulating valve of the utility model.
Fig. 2 is the external structure schematic representation of the pneumatic mazy type modulating valve of the utility model.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the pneumatic mazy type modulating valve of the utility model comprises valve body 1, first pad 2, valve seat 3, labyrinth valve cage 4, adjust cover 5, seal ring 6, second pad 7, valve gap 8, spool 9, bonnet flange 10, guide pipe 11, anti-extrusion pad 12, stud 16, filler disrance sleeve 18, support folder 19, hold-down grid 20, first bolt 21 and second bolt 22, valve seat 3 is located at the inside of valve body 1, valve seat 3 is sealed by first pad 2 with the centre of valve body 1, labyrinth valve cage 4 is by the step location of valve seat 3, the both sides of adjusting cover 5 are respectively by valve body 1 and labyrinth valve cage 4 location, seal ring 6 is being adjusted between cover 5 and the labyrinth valve cage 4, second pad 7 is being adjusted between cover 5 and the valve gap 8, spool 9 is by guide pipe 11, adjusting cover 5 and labyrinth valve cage 4 leads, bonnet flange 10 is fixing by stud 16, guide pipe 11 is by the axis hole location of valve gap 8 inside, anti-extrusion pad 12 is positioned at the top of guide pipe 11 and filler 13, filler disrance sleeve 18 is positioned at the top of anti-extrusion pad 12, hold-down grid 20 is lock onto on the support folder 19 by second bolt 22, and support folder 19 is fixed on the valve gap 8 by first bolt 21.
First pad 2 and second pad 7 are used to prevent valve leakage out of steam system, give certain pretension decrement by valve gap 8 and keep sealing, bonnet flange 10 is used for the axial restraint of whole trim part, guide pipe 11 is used for the guiding of spool 9, anti-extrusion pad 12 is used to prevent filler 13 extruding cold flow distortion and plays certain lubrication, filler disrance sleeve 18 is used for the isolation between two-part filler up and down, filler 13 is used to prevent that medium from leaking outside, hold-down grid 20 is used to compress filler 13 and gives certain sealing pretension specific pressure, hold-down grid 20 is lock onto on the support folder 19 by second bolt 22, support folder 19 is fixed on the valve gap 8 by first bolt 21, and support folder 19 is used for fixing hold-down grid 20 and whole valve actuating mechanism support.
Do not adopt between valve seat 3 and the valve body 1 to be threaded, adopt relative floating to connect, thereby reduced assembly error, make to make the relative self contering function that reaches valve core case in the assembly process easy to maintenance simple yet.Valve seat 3 adopts the built-up welding stellite with the sealing surface of spool 9, makes the antiscour function of trim increase greatly, also makes extend greatly the working life of valve.Spool 9 adopts the correct grinding mode to process with the sealing surface of labyrinth valve cage 4, has increased the sealing effect of whole valve.Spool 9 adopts the balanced type spool, makes the operation ouput force of whole valve reduce greatly.
Labyrinth valve cage 4 adopts labyrinth path, fluid is separated into many shuntings, to reduce quality and energy rank as far as possible, each fluid passage all is made up of the right-angled bend of specific quantity, and formation labyrinth path, in this process, each turning all reduces by one more than the velocity head with the pressure of flowing medium, realizes antihypertensive effect step by step truly.Labyrinth valve cage 4 is welded by some labyrinth discs, can be by different combining forms to adapt to various operating mode, and whole adaptability and commutativity are strengthened.
Seal ring 6 adopts U flexible seal ring of type reinforced TFE or the flexible seal ring of Inconel 601 section bar matter full-metallics, can select according to concrete operating mode, this seal ring does not seal according to the pretension decrement, adopt pressure medium selfsealings form, reduced wearing and tearing and ouput force, extended working life.The structural type of seal ring 6 can realize that stream opens the versatility that stream closes, as long as the installation direction of conversion seal ring 6 can must reach the purpose that flows to conversion easily.
The pneumatic mazy type modulating valve of the utility model adopts the bidirectional flow mode, and medium can be that stream is opened, and also can be that stream closes.The utility model valve inner is not threaded for having, and the maintenance easy accessibility has that the ouput force of unlatching is little, leakage rate is little, characteristics such as safe and reliable, long service life.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these mode of executions.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (1)
1. pneumatic mazy type modulating valve, it is characterized in that, it comprises valve body, first pad, valve seat, the labyrinth valve cage, adjust cover, seal ring, second pad, valve gap, spool, bonnet flange, guide pipe, the anti-extrusion pad, stud, the filler disrance sleeve, the support folder, hold-down grid, first bolt and second bolt, valve seat is located at the inside of valve body, the centre of valve seat and valve body is by first gasket seal, the labyrinth valve cage is by the step location of valve seat, the both sides of adjusting cover are respectively by valve body and labyrinth valve cage location, seal ring is being adjusted between cover and the labyrinth valve cage, second pad is being adjusted between cover and the valve gap, spool is by guide pipe, adjusting cover and labyrinth valve cage leads, bonnet flange is fixed by stud, guide pipe is by the axis hole location of valve gap inside, the anti-extrusion pad is positioned at the top of guide pipe, the filler disrance sleeve is positioned at the top of anti-extrusion pad, and hold-down grid is lock onto on the support folder by second bolt, and support presss from both sides by first bolt on valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202863671U CN201779292U (en) | 2010-08-10 | 2010-08-10 | Labyrinth pneumatic regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202863671U CN201779292U (en) | 2010-08-10 | 2010-08-10 | Labyrinth pneumatic regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779292U true CN201779292U (en) | 2011-03-30 |
Family
ID=43792503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202863671U Expired - Fee Related CN201779292U (en) | 2010-08-10 | 2010-08-10 | Labyrinth pneumatic regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779292U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537647A (en) * | 2012-01-19 | 2012-07-04 | 蔡天山 | Antiscour draining valve |
| CN103994241A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel sealing structure for external notch of control valve |
| CN106439206A (en) * | 2016-11-08 | 2017-02-22 | 上海发电设备成套设计研究院 | Structure preventing washing erosion of sealing face of high-pressure adjusting valve |
| CN107355549A (en) * | 2017-09-17 | 2017-11-17 | 浙江贝尔控制阀门有限公司 | A kind of labyrinth type micro-flow regulating valve |
-
2010
- 2010-08-10 CN CN2010202863671U patent/CN201779292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537647A (en) * | 2012-01-19 | 2012-07-04 | 蔡天山 | Antiscour draining valve |
| CN103994241A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel sealing structure for external notch of control valve |
| CN106439206A (en) * | 2016-11-08 | 2017-02-22 | 上海发电设备成套设计研究院 | Structure preventing washing erosion of sealing face of high-pressure adjusting valve |
| CN107355549A (en) * | 2017-09-17 | 2017-11-17 | 浙江贝尔控制阀门有限公司 | A kind of labyrinth type micro-flow regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20160810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |