CN2469264Y - Venting waste steam type valve - Google Patents
Venting waste steam type valve Download PDFInfo
- Publication number
- CN2469264Y CN2469264Y CN 01211069 CN01211069U CN2469264Y CN 2469264 Y CN2469264 Y CN 2469264Y CN 01211069 CN01211069 CN 01211069 CN 01211069 U CN01211069 U CN 01211069U CN 2469264 Y CN2469264 Y CN 2469264Y
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- valve
- window
- current
- established
- valve seat
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- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
An atmospheric exhaust valve is characterized in that the inner of the valve body is provided with a valve seat and a three-sleeve type guide flow cover, the upper end of the guide flow cover is provided with an exhausting balance hole, the lower end of the guide flow is provided with a window. The valve rod through the bottom end of the valve case is connected with the valve core and provided with an inclined surface to seal and combine with the valve seat. The center of the window is an empty cavity, and both sides are provided with an orifice. The exhaust valve is extensively used for the power plant boiler systems as high pressure steam emptying device.
Description
The utility model relates to the automation instrument technology field, scavenges in time when belonging to ignition of the boiler specifically and crosses the steam of high pressure, can prevent a kind of to empty exhaust steam valve of steam leakage again effectively.
Existing steam discharging apparatus structure complexity, main easy leakage, erosion and noise are big, linear adjustment is poor, and working life is short, because valve seat is connected with valve body, can form the crack when the physical phenomenon of expanding with heat and contract with cold simultaneously, and reliability is relatively poor.
It is good that the purpose of this utility model provides adjusting function, and anti-crack is difficult for leakage, low noise, anti-cavitation and strengthens and guarantee a kind of to empty exhaust steam valve of the normal operation of boiler working life.
For finishing above-mentioned purpose technical solution adopted in the utility model: establish valve seat and three telescopic current-sharing covers in the valve body, the exhaust equalizing orifice is established in the upper end of current-sharing cover, window is established in the lower end, valve rod passes valve gap bottom connection spool and establishes the inclined-plane and cooperates with valve base sealing, in the middle of the above-mentioned current-sharing cover window is cavity, dual side-edge is established throttle orifice respectively, and this valve body directly can formula for importing and exporting.
The utility model has adopted valve body and valve seat stripping technique, selects the high-quality stainless steel material for use and carries out hard alloy overlay welding, has effectively prevented the leakage that occurs because of the generation crack of expanding with heat and contract with cold under the temperature difference operating mode.Design improvement three telescopic current-sharing covers, the step-down that this structural type changes traditional empty exhaust steam valve is repeatedly step-down, this has just fundamentally solved the big shortcoming of noise big bang, and be designed to form throttling action between current-sharing cover and spool, the spool, when valve is opened to 10% when above, promptly become throttling by spool and current-sharing are hood-shaped, changed single spool of conventional valves and valve seat throttling and the erosion that occurs is serious, working life is short, the shortcoming of adjusting function difference.Compared with the prior art the utility model has tangible advantage, owing to designed new structure, has improved degree of regulation, possesses the characteristics of anti-cavitation, low noise, long service life.
The utility model is embodiment described in detail in conjunction with the accompanying drawings.
Fig. 1 is the utility model structural drawing;
Fig. 2 is the window structure figure of three telescopic equal flow cover lower ends.
According to shown in Figure 1, establish valve seat 2 and three telescopic current-sharing covers 7 in the valve body 1, exhaust equalizing orifice 8 is established in the upper end of current-sharing cover 7, window 9 is established in the lower end, valve rod 5 passes valve gap 6 bottoms and connects spool 4, and simultaneously spool 4 is established inclined-plane 3 and is sealed and matched with valve seat 2, is step-down solution noise repeatedly owing to solve a traditional step-down to empty exhaust steam valve, current-sharing cover lower end is provided with window 9, and the centre of its window 9 is a cavity 11 as shown in Figure 2.Dual side-edge is established throttle orifice 12 and 13, and straight-through type is adopted in the import and export of valve body 1 simultaneously.
The utility model is installed on the boiler steam line, when boiler is started working, causes part not reach waste gas and the steam of crossing high pressure, when surpassing certain value, send signal, driving mechanism is received instruction and is started working, valve is opened rapidly, steam is regulated by this device, directly goes into to empty blow-off line, after receiving normal run signal, driving mechanism begins the valve rod that reverses, the drive spool moves downward, and directly causes and closes, and steam is effectively confessed.The utility model inner body is all selected high-quality stainless steel and alloy material for use, pressure adaptation 25～32mpa, and maximum temperature can reach 540 ℃.
Claims (3)
1, a kind of by valve rod (5), spool (4), valve seat (2), valve body (1), valve gap (6) and current-sharing cover (7) form to empty exhaust steam valve, it is characterized in that establishing in the valve body (1) valve seat (2) and three telescopic current-sharing covers (7), the upper end of current-sharing cover (7) is established exhaust equalizing orifice (8) lower end and is established window (9), and valve rod (5) passes valve gap (6) bottom connection spool (4) and establishes inclined-plane (3) and is sealed and matched with valve seat (2).
2, according to claim 1 to empty exhaust steam valve, it is characterized in that its centre of window (9) of three telescopic stream covers bottoms is cavity (11), throttle orifice (12) and (13) are established in two limits.
3, according to claim 1 to empty exhaust steam valve, it is characterized in that the import and export (10) of valve body (1) are straight-through type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01211069 CN2469264Y (en) | 2001-03-12 | 2001-03-12 | Venting waste steam type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01211069 CN2469264Y (en) | 2001-03-12 | 2001-03-12 | Venting waste steam type valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469264Y true CN2469264Y (en) | 2002-01-02 |
Family
ID=33630521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01211069 Expired - Fee Related CN2469264Y (en) | 2001-03-12 | 2001-03-12 | Venting waste steam type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469264Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937201A (en) * | 2012-11-22 | 2013-02-20 | 南通市力沛流体阀业有限公司 | Air-toward steam exhausting valve |
| CN104074989A (en) * | 2014-06-06 | 2014-10-01 | 温州市隆潮阀门有限公司 | Manual digital control check valve |
| CN109307086A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of anti-clogging valve of oil equipment |
-
2001
- 2001-03-12 CN CN 01211069 patent/CN2469264Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937201A (en) * | 2012-11-22 | 2013-02-20 | 南通市力沛流体阀业有限公司 | Air-toward steam exhausting valve |
| CN104074989A (en) * | 2014-06-06 | 2014-10-01 | 温州市隆潮阀门有限公司 | Manual digital control check valve |
| CN109307086A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of anti-clogging valve of oil equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |