CN2559840Y - Assembling & disassembling super heated vapor evacuation valve - Google Patents
Assembling & disassembling super heated vapor evacuation valve Download PDFInfo
- Publication number
- CN2559840Y CN2559840Y CN 02265935 CN02265935U CN2559840Y CN 2559840 Y CN2559840 Y CN 2559840Y CN 02265935 CN02265935 CN 02265935 CN 02265935 U CN02265935 U CN 02265935U CN 2559840 Y CN2559840 Y CN 2559840Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing surface
- spool
- sealing face
- conical
- 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 relates to a novel demountable superheated steam blowoff valve, and comprises a valve, a valve base, a valve sleeve, a locating ring, a gasket seal, a valve rod, a valve core, a valve cover, a high temperature and pressure bolt, a standstill locking connecting block, an upper valve rod and a bracket. The utility model is characterized in that the sealing face of the valve core is a spherical figure and that of the valve base is a conical figure; the spherical sealing face of the valve core and the conical sealing face of the valve base are contacted to each other in the middle; a plurality of orifices are evenly distributed on the valve sleeve, and the upper part of the spherical sealing face of the valve core is a cylinder which is opposite to the orifices in the valve sleeve; a spacing is left between the orifices and the upper part of the spherical sealing face of the valve core. The utility model has the advantages of no need of changing the whole machine during maintaining by adopting a demountable structure, and being able to work under the high temperature and pressure and hot straining working condition.
Description
Technical field
The utility model relates to a kind of exhaust-valve, the overheated vapour exhaust-valve of particularly a kind of novel reassembling type.
Background technique
Overheated vapour all adopts the industrial pipeline valve to valve used in the outage pressure reduction releasing system in the thermal power plant at present, as stop valve, this type of valve exists because of the greatly different thermal expansion that causes of the complex-shaped and volume of valve body irregular under the operating mode of High Temperature High Pressure difference fluid discharging, can make the sealing surface be full of cracks; Being fine rule valve mouth (sealing contact surface) with the tapered valve core sealed cover and the contact surface of valve seat is washed away bad by the High Pressure Difference high-velocity fluid easily; Wedge action valve is after hot closing, and shrinkage with the flashboard chucking, is opened difficulty easily during cold conditions; So, make superheater perpendicular box pipe road reduce steel strength because of repeatedly welding if need integral body to cut off because valve is the integral solder formula behind the valve invalidation from the pipeline that superheater connects case.
Summary of the invention
The purpose of this utility model is to solve in the prior art that overheated vapour all adopts the industrial pipeline valve to valve used in the outage pressure reduction releasing system in the thermal power plant, this type of valve exists because of the greatly different thermal expansion that causes of the complex-shaped and volume of valve body irregular under the operating mode of High Temperature High Pressure difference fluid discharging, can make the sealing surface be full of cracks; Being fine rule valve mouth (sealing contact surface) with the tapered valve core sealed cover and the contact surface of valve seat is washed away bad by the High Pressure Difference high-velocity fluid easily; Wedge action valve is after hot closing, and shrinkage with the flashboard chucking, is opened difficulty easily during cold conditions; So, make superheater perpendicular box pipe road because of repeatedly welding problems such as having reduced steel strength as needing integral body to cut off because valve is the integral solder formula behind the valve invalidation from the pipeline that superheater connects case.The utility model designs the overheated vapour exhaust-valve of novel reassembling type, comprise valve body, valve seat, valve pocket, positioning ring, gasket seal, valve rod, spool, valve gap, the High Temperature High Pressure bolt, the spline contiguous block, upper valve rod, support, it is characterized in that: the sealing surface of spool is a sphere shape, the sealing surface of valve seat is conical, the sphere shape sealing surface of spool contacts with the conical sealing surface of valve seat is middle, on valve pocket, be evenly distributed with some throttle orifices, the sphere shape sealing surface top of spool is cylindrical body, throttle orifice on the valve pocket is relative with cylindrical body, between the sphere shape sealing surface upper end of the position of throttle orifice and spool spacing is arranged.The utility model has the advantages that the employing disassembly and assembly structure, maintain and replace does not need complete machine to change, and novel valve core structure can be answered proper functioning under the operating mode of alternation in High Temperature High Pressure difference and heat.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated, accompanying drawing 1 is a structural representation of the present utility model, and accompanying drawing 2 is a valve core structure decomposing schematic representation of the present utility model,
Comprise valve body 1 among the embodiment figure, valve seat 2, valve pocket 3, positioning ring 4, gasket seal 5, valve rod 16, spool 6, valve gap 7, High Temperature High Pressure bolt 8, spline contiguous block 9, upper valve rod 10, support 11, it is characterized in that: the sealing surface 12 of spool 6 is sphere shape, the sealing surface 13 of valve seat 2 is conical, on valve pocket 3, be evenly distributed with some throttle orifices 14, sphere shape sealing surface 12 tops of spool 6 are cylindrical body 15, the sphere shape sealing surface 12 of spool 6 and the conical sealing surface of valve seat 2 13 middle contacting, throttle orifice 14 on the valve pocket 3 is relative with cylindrical body 15, between sphere shape sealing surface 12 upper ends of the position of throttle orifice 14 and spool 6 spacing is arranged.During use because the conical sealing surface 13 of the sphere shape sealing surface 12 of spool 6 and valve seat 2 coincide the middle part of surface of contact at the conical sealing surface 13 of valve seat 2, can prevent effectively that the High Pressure Difference high-velocity fluid from washing away identical surface of contact, and owing on the valve pocket 3 some throttle orifices 14 are arranged, velocity head in the time of can slowing down spool 6 and open and the water hammer intensity when closing, in addition owing between sphere shape sealing surface 12 upper ends of the position of throttle orifice 14 and spool 6 spacing is arranged, can make valve opening and closing have one section screening stream dead band can avoid of the erosion of high-velocity fluid crevice throttle the whole story to the conical sealing surface 13 of valve seat 2, and the integrated design of valve rod 16 spools 6 does not contact with the inwall of valve pocket 3 when work, so there is not the machinery vibration when high velocity fluid strikes.
Claims (3)
1, the overheated vapour exhaust-valve of novel reassembling type, comprise valve body, valve seat, valve pocket, positioning ring, gasket seal, valve rod, spool, valve gap, High Temperature High Pressure bolt, spline contiguous block, upper valve rod, support, it is characterized in that: the sealing surface of spool is a sphere shape, the sealing surface of valve seat is conical, on valve pocket, be evenly distributed with some throttle orifices
2, by the overheated vapour exhaust-valve of the described novel reassembling type of claim 1, it is characterized in that: the sphere shape sealing surface of spool contacts with the conical sealing surface of valve seat is middle,
3, by the overheated vapour exhaust-valve of the described novel reassembling type of claim 1, it is characterized in that: the sphere shape sealing surface top of spool is cylindrical body, and the throttle orifice on the valve pocket is relative with cylindrical body, between the sphere shape sealing surface upper end of the position of throttle orifice and spool spacing is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265935 CN2559840Y (en) | 2002-07-31 | 2002-07-31 | Assembling & disassembling super heated vapor evacuation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265935 CN2559840Y (en) | 2002-07-31 | 2002-07-31 | Assembling & disassembling super heated vapor evacuation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2559840Y true CN2559840Y (en) | 2003-07-09 |
Family
ID=33731867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02265935 Expired - Fee Related CN2559840Y (en) | 2002-07-31 | 2002-07-31 | Assembling & disassembling super heated vapor evacuation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2559840Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777608A (en) * | 2011-10-31 | 2012-11-14 | 费希尔久安输配设备(成都)有限公司 | Fluid flow control device |
| CN104315169A (en) * | 2014-11-18 | 2015-01-28 | 自贡自高阀门有限公司 | Rapidly positioned and mounted throttling stop emptying valve clack component |
| CN108167461A (en) * | 2018-01-31 | 2018-06-15 | 黑龙江北方阀业有限责任公司 | It is a kind of to idle discharge steam valve |
-
2002
- 2002-07-31 CN CN 02265935 patent/CN2559840Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777608A (en) * | 2011-10-31 | 2012-11-14 | 费希尔久安输配设备(成都)有限公司 | Fluid flow control device |
| CN102777608B (en) * | 2011-10-31 | 2014-12-03 | 费希尔久安输配设备(成都)有限公司 | Fluid flow control device |
| CN104315169A (en) * | 2014-11-18 | 2015-01-28 | 自贡自高阀门有限公司 | Rapidly positioned and mounted throttling stop emptying valve clack component |
| CN108167461A (en) * | 2018-01-31 | 2018-06-15 | 黑龙江北方阀业有限责任公司 | It is a kind of to idle discharge steam 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: 20030709 Termination date: 20100731 |