CN201902579U - Erosion resistant structure of adjusting valve - Google Patents
Erosion resistant structure of adjusting valve Download PDFInfo
- Publication number
- CN201902579U CN201902579U CN2010206769185U CN201020676918U CN201902579U CN 201902579 U CN201902579 U CN 201902579U CN 2010206769185 U CN2010206769185 U CN 2010206769185U CN 201020676918 U CN201020676918 U CN 201020676918U CN 201902579 U CN201902579 U CN 201902579U
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- Prior art keywords
- valve
- erosion
- lining
- valve core
- core head
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- Sliding Valves (AREA)
Abstract
The utility model discloses an erosion resistant structure of an adjusting valve, which comprises a valve seat arranged at an exit end of the bottom part of a valve cavity, wherein a valve core assembly which can move up and down is arranged in the valve cavity; a lining is arranged in the valve seat, the internal diameter of the lining is combined with the external diameter of a valve core head on the valve core assembly; the lining and the valve core head are hard alloy respectively; the upper end plane of the valve seat connected with the valve cavity and the surface of a valve core handle are the hard alloy. In the erosion resistant structure, according to the severity of erosion, the integrated hard alloy or a surface sintering hard material is adopted on each runner segment respectively; the erosion and cavitation erosion of high-speed particles is improved by forming a continuous protective layer.
Description
Technical field
The utility model relates to a kind of industrial process control valve, relates to a kind of modulating valve erosion resistance structure specifically.
Background technique
After striding into the new century, the industry of China enters structural adjustment period, and the chemical industry energy policy has been done great adjustment, is main turning to based on coal from oil.First procedure of Coal Chemical Industry is that coal is changed into synthetic gas, the low befouling environment again of the gas producing furnace efficient of former usefulness, and country makes a decision superseded; Adopt advanced in the world coal water slurry gasification furnace apparatus (hereinafter to be referred as gasification oven), gasification oven is listed country " 863 " plan in for this reason, tackles key problems successfully in 2005; Built first homemade gasification oven in Shandong Yankuangguotai Chemical Co., Ltd, day 1150 tons of coals of processing; Built up and produced 240000 tons of methyl alcohol demonstration projects per year.
Enter the water coal slurry (being commonly called as Heisui River) of gasification oven burning, after throttling, extremely strong erosion attack is arranged.The main product of domestic modulating valve was the product of introducing from states such as the U.S. and Britain's moral days after the eighties at that time, was used to control general liquid state or gaseous medium, did not have the erosion resistance function, so can't use.This special anti-impact erosion modulating valve is domestic gap product, entirely by import; The price sky-high price of saying so, working life is not long yet.
The model utility content
The technical problems to be solved in the utility model provides a kind of modulating valve erosion resistance structure, can resist the erosion and the cavitation erosion of high velocity particle, to overcome the defective that exists in the prior art.
The utility model is by the following technical solutions:
A kind of modulating valve erosion resistance structure, comprise the valve seat of being located at valve pocket bottom outlet end, be provided with mangetic core assembly moving up and down in the valve pocket, be provided with lining in the described valve seat, the external diameter of the valve core head on this lining internal diameter and the mangetic core assembly cooperates, described lining, valve core head are respectively cemented carbide, and the valve seat upper-end surface and the spool handle surface that connect valve pocket are cemented carbide.
Further, described valve seat upper-end surface and spool handle surface is a silicon carbide.
Preferably, described cemented carbide is a Tungsten carbite.
Further, during described valve core head outer diameter D≤50mm, valve core head is the solid part of cemented carbide compacting; When valve core head outer diameter D＞50mm, valve core head is a hollow parts.
In the utility model, by the order of severity that is subjected to erosion, on each section runner, adopt whole hard alloy respectively, or surperficial sintered hard material, form continuous protective layer, the erosion and the cavitation erosion of opposing high velocity particle.Except indispensable function with common procedure industrial control valve, the utlity model has extremely strong erosive wear resistance, can be adapted to the mortar class medium that controlling liquid is mixed with solid particle, in the coal gasifier device, be used to regulate the water coal slurry flow at present in a large number.
Description of drawings
The schematic representation of the modulating valve erosion resistance structure that Fig. 1 relates to for the utility model.
Embodiment
See Fig. 1, the modulating valve erosion resistance structure that relates to for the utility model.According to designing requirement, medium enters from valve pocket 7 one sides, after throttling, is flowed out by valve pocket 7 bottoms.Valve pocket 7 bottom outlet ends are established valve seat 2, and valve seat 2 is connecting outer pipe 9.Be provided with guide pin bushing 6 in valve pocket 7, mangetic core assembly moves up and down in guide pin bushing 6 and along guide pin bushing 6.Mangetic core assembly comprises valve rod 8, spool handle 5, valve core head 4.Be provided with lining 1 in the described valve seat 2, this lining 1 inner diameter d cooperates with the outer diameter D of valve core head 4, and the upper-end surface 21 and the spool handle surface that connect valve pocket 7 on lining 1, valve core head 4 and the valve seat 2 are cemented carbide.Because valve core head 4 is used cemented carbide, and spool handle 5 is generally used stainless steel, the hardness of the two is mutually far short of what is expected, and it is bigger that linear expansion coeffcient also differs, so can not connect with common mechanical.Can in stainless steel spool handle 5, process the endoporus of inverted cone, grinding goes out circular groove on the tailing axle of spool, heating spool handle 5 expands taper hole during assembling, then the spool tailing axle is pressed in the hole, can guarantee that like this spool does not come off when intense impact, vibration, intensification.
In prior art, erosion, the most serious place of cavitation erosion occur in spool and enter the position that valve seat 2 endoporus produce restriction effect, so these two part surfaces will be handled especially.The small dimension valve core head 4 usefulness cemented carbide of outer diameter D≤50mm are pressed into solid part, the hollow cemented carbide of big specification valve core head 4 of D＞50mm.The upper surface of valve seat 2 does not enter the throttling high velocity, with silicon carbide 3; Valve seat 2 endoporus then are the erosion districts, are inlaid with the lining 1 of cemented carbide, and adequate thickness opposing erosion is arranged.Spool handle 5 is subjected to the erosion position similar with the valve seat upper surface, also uses silicon carbide 3; According to the difference of erosion strength, shape is linked to be continuous protective layer like this.After test of many times, can determine suitable thickness, to resist long-term erosion, guarantee powerful combination force again.Preferably, cemented carbide is a Tungsten carbite.Valve seat 2 course of working are more special, and lining 1 first hot pressing is gone in the endoporus of valve seat 2, silicon carbide 3 on the inclined-plane of valve seat 2 then, and machining lining 1 is to given size again; In when assembling, pack into the earlier matching hole of valve body of valve seat is located with screw-driving.
In the utility model, by the order of severity that is subjected to erosion, on each section runner, adopt whole hard alloy respectively, or surperficial sintered hard material, form continuous protective layer, the erosion and the cavitation erosion of opposing high velocity particle.Except indispensable function with general industry process modulating valve, the utlity model has extremely strong erosive wear resistance, can be adapted to the mortar class medium that controlling liquid is mixed with solid particle, in the coal gasifier device, be used to regulate the water coal slurry flow at present in a large number.
Claims (4)
1. modulating valve erosion resistance structure, comprise the valve seat (2) of being located at valve pocket (7) bottom outlet end, valve pocket is provided with mangetic core assembly moving up and down in (7), it is characterized in that: be provided with lining (1) in the described valve seat (2), the external diameter of the valve core head (4) on this lining (1) internal diameter and the mangetic core assembly cooperates, described lining (1), valve core head (4) are respectively cemented carbide, and the valve seat upper-end surface (21) that is connected with valve pocket (7) and spool handle (5) surface is cemented carbide.
2. modulating valve erosion resistance structure according to claim 1 is characterized in that: described valve seat upper-end surface (21) is a silicon carbide (3), and the surface of spool handle (5) is silicon carbide also.
3. modulating valve erosion resistance structure according to claim 1 is characterized in that: described cemented carbide is a Tungsten carbite.
4. modulating valve erosion resistance structure according to claim 1 is characterized in that: during described valve core head (4) outer diameter D≤50mm, valve core head (4) is the solid part of cemented carbide compacting; When valve core head (4) outer diameter D＞50mm, valve core head (4) is a hollow parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206769185U CN201902579U (en) | 2010-12-23 | 2010-12-23 | Erosion resistant structure of adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206769185U CN201902579U (en) | 2010-12-23 | 2010-12-23 | Erosion resistant structure of adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902579U true CN201902579U (en) | 2011-07-20 |
Family
ID=44273172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206769185U Expired - Fee Related CN201902579U (en) | 2010-12-23 | 2010-12-23 | Erosion resistant structure of adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902579U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402418A (en) * | 2014-09-16 | 2016-03-16 | 江苏神通阀门股份有限公司 | Angular regulating valve |
| CN113028074A (en) * | 2021-02-07 | 2021-06-25 | 德莱赛机械(苏州)有限公司 | Embedded combination connection's governing valve |
-
2010
- 2010-12-23 CN CN2010206769185U patent/CN201902579U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402418A (en) * | 2014-09-16 | 2016-03-16 | 江苏神通阀门股份有限公司 | Angular regulating valve |
| CN113028074A (en) * | 2021-02-07 | 2021-06-25 | 德莱赛机械(苏州)有限公司 | Embedded combination connection's governing valve |
| CN113028074B (en) * | 2021-02-07 | 2023-08-18 | 德莱赛机械(苏州)有限公司 | Embedded combined connection 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: 20110720 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |