CN202065015U - Steam by-pass valve of steam turbine - Google Patents
Steam by-pass valve of steam turbine Download PDFInfo
- Publication number
- CN202065015U CN202065015U CN2011201731434U CN201120173143U CN202065015U CN 202065015 U CN202065015 U CN 202065015U CN 2011201731434 U CN2011201731434 U CN 2011201731434U CN 201120173143 U CN201120173143 U CN 201120173143U CN 202065015 U CN202065015 U CN 202065015U
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- China
- Prior art keywords
- valve
- steam
- filter screen
- valve body
- valve rod
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- Expired - Fee Related
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Abstract
The utility model discloses a steam by-pass valve of a steam turbine, which comprises a valve body, a valve rod, a steam inlet connecting pipe and a valve seat and is characterized in that the steam inlet connecting pipe is arranged on one side of the valve body. The valve rod is arranged in the middle of the valve body, a left filter screen is arranged at one end of the valve rod, and a right filter screen is arranged at the other end of the valve rod. A valve core is arranged at the lower portion of the valve rod, one end of the left filter screen is communicated with the steam inlet connecting pipe, and one end of the right filter screen is fixedly connected with the valve body. A throttling element is arranged at the lower portion of the valve core, and a ladder-shaped throttling plate is arranged under the throttling element. The steam by-pass valve of the steam turbine is simple in structure and convenient to use, can avoid damage and leakage if the steam by-pass valve bears high pressure and is flushed by high-speed water during operation because of the special filter screen structure, and enters a positive circulation, thereby guaranteeing that the steam by-pass valve is energy saving and high-efficiency, being safe and reliable in operation, saving production cost and improving production efficiency.
Description
Technical field
The utility model relates to a kind of valve body, particularly relates to a kind of steam by-pass valve that is used for steam turbine electric bypass device.
Background technique
At present; the effect of the live steam by-pass system of thermoelectric generator assembly cover; be in the unit starting process, to be used to promote boiler pressure; steam temperature; in the orderly closedown process, be used to reclaim working medium; at the unit emergency stop valve trip; be used to prevent the boiler superpressure in the removal of load process; Boiler Steam is circulated by this system; guarantee not dry combustion method of reheater simultaneously; not blowing out is shut down in assurance; at any time the condition that possesses hot starting, hot start; one-level or secondary bypath system steam converting valve be because the special role of pressure and temperature reducing and the restriction of parameter, and what the valve internal structure all adopted multi-step pressure reduction shrouds the formula structure.At heating surfaces such as boiler economizer, superheater, reheaters, in the maintenance of pipeline such as steam tube, supply pipe, the metal impurities that remain in the system are more, in the unit starting lifting process, bigger impurity particle is clipped between spool and the valve seat front cover, makes sealing surface pit, defective such as damaged occur.Through the long period operation, steam converting valve very easily produces leakage, the leakage of high pressure steam changing valve will make pipeline that the danger of overtemperature is arranged, and high-quality steam is then lost in the leakage of low voltage bypass steam converting valve will make heat of condensation load increase the direct condenser vacuum that influences.By analyzing, it is the basic reason that causes valve leak that foreign material are got involved the valve seal position.
The model utility content
At the imperfection of existing steam by-pass valve, and very big inconvenience is arranged in the process of practical application, the utility model proposes a kind of steam turbine steam by-pass valve, it is simple in structure, and is easy for installation and overcome deficiency of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of steam turbine steam by-pass valve, comprise valve body, valve rod, the steam inlet is taken over, valve seat, it is characterized in that: a side of valve body is set to the steam inlet and takes over, the intermediate portion is set to valve rod, one end of valve rod is set to left filter screen, its the other end is set to right filter screen, the bottom of valve rod is set to spool, and left filter screen one end is taken over the steam inlet and is connected, and an end of right filter screen is fixedlyed connected with valve body, the bottom of spool is set to throttling element, the throttling element below is set to trapezoidal Rectifier plate, and throttling element is connected with trapezoidal Rectifier plate top, fixedlys connected with valve body respectively in the both sides of trapezoidal Rectifier plate.
In an embodiment of the present utility model, the caliber that an end is taken in described steam inlet is bigger than the caliber of the other end.
Further, described valve seat top is set to waste gas outlet, and an end of waste gas outlet is set to targeting port.
In an embodiment of the present utility model, the next door of described valve seat is provided with acoustical panel.
The beneficial effects of the utility model are: this product structure is simple, and is easy to use, distinctive filter screen structure setting, make the steam by-pass valve be in operation and washed away by high pressure, high flow rate water, can prevent damaged the leakage, enter benign cycle, thereby effectively guaranteeing changes steam by-pass valve efficient energy-saving, safe and reliable to operation, easy for installation, applied range, and reduced workman's labor 7 fatigue resistances, and saved production cost, enhance productivity.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of steam turbine steam by-pass of the utility model valve arrangement schematic representation.
100-valve body among the figure, the 130-steam inlet is taken over, 160-acoustical panel, 190-valve seat, 111-left side filter screen, the right filter screen of 110-, the trapezoidal Rectifier plate of 140-, 170-throttling element, 200-targeting port, 120-valve rod, 150-waste gas outlet, 180-spool.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of steam turbine steam by-pass valve, comprise valve body 100, valve rod 120, the steam inlet takes over 130, valve seat 190, it is characterized in that: a side of valve body 100 is set to the steam inlet and takes over 130, the intermediate portion is set to valve rod 120, one end of valve rod 120 is set to left filter screen 111, its the other end is set to right filter screen 110, the bottom of valve rod 120 is set to spool 180, left side filter screen 111 1 ends are taken over 130 with the steam inlet and are connected, one end of right filter screen 110 is fixedlyed connected with valve body 100, the bottom of spool 180 is set to throttling element 170, throttling element 170 belows are set to trapezoidal Rectifier plate 140, and throttling element 170 is connected with trapezoidal Rectifier plate 140 tops, fixedly connected with valve body 100 respectively in the both sides of trapezoidal Rectifier plate 140.
In an embodiment of the present utility model, the caliber that 130 1 ends are taken in described steam inlet is bigger than the caliber of the other end, makes gas be easy to enter the steam inlet and takes over 130.
In addition, described valve seat 190 tops are set to waste gas outlet 150, and an end of waste gas outlet 150 is set to targeting port 200.
In an embodiment of the present utility model, the next door of described valve seat 190 is provided with acoustical panel 160.
Present embodiment is in the process of using, gas is taken over 130 by the steam inlet and is entered left filter screen 111 and right filter screen 110, by left filter screen 111, filter removal impurity with right filter screen 120, enter spool 180 by valve rod 120 then, start working, throttling element 170 is simultaneously to its controlled water flow, scavenged to targeting port 200 by trapezoidal Rectifier plate 140 at last, targeting port 200 makes waste gas draw waste gas outlet 150, because waste gas outlet 150 can produce many noises in the process of exhaust, the acoustical panel 160 on next door can be drawn noise, guaranteed that whole device operation is unobstructed, the energy saving height is convenient to regular maintenance.
Based on above-mentioned, the beneficial effect of present embodiment is that this product structure is simple, and is easy to use, distinctive filter screen structure setting makes the steam by-pass valve be in operation and washed away by high pressure, high flow rate water, can prevent damaged the leakage, enter benign cycle, thereby effectively guarantee to change steam by-pass valve efficient energy-saving, safe and reliable to operation, easy for installation, applied range, and reduced working strength of workers, saved production cost, enhanced productivity.
The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. steam turbine steam by-pass valve, comprise valve body, valve rod, the steam inlet is taken over, valve seat, it is characterized in that: a side of valve body is set to the steam inlet and takes over, the intermediate portion is set to valve rod, one end of valve rod is set to left filter screen, its the other end is set to right filter screen, the bottom of valve rod is set to spool, left side filter screen one end is taken over the steam inlet and is connected, one end of right filter screen is fixedlyed connected with valve body, and the bottom of spool is set to throttling element, and the throttling element below is set to trapezoidal Rectifier plate, throttling element is connected with trapezoidal Rectifier plate top, fixedlys connected with valve body respectively in the both sides of trapezoidal Rectifier plate.
2. according to the described a kind of steam turbine steam by-pass valve of claim 1, it is characterized in that: the caliber that an end is taken in described steam inlet is bigger than the caliber of the other end.
3. according to the described a kind of steam turbine steam by-pass valve of claim 1, it is characterized in that: described valve seat top is set to waste gas outlet, and an end of waste gas outlet is set to targeting port.
4. according to the described a kind of steam turbine steam by-pass valve of claim 1, it is characterized in that: the next door of described valve seat is provided with acoustical panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201731434U CN202065015U (en) | 2011-05-26 | 2011-05-26 | Steam by-pass valve of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201731434U CN202065015U (en) | 2011-05-26 | 2011-05-26 | Steam by-pass valve of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065015U true CN202065015U (en) | 2011-12-07 |
Family
ID=45058882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201731434U Expired - Fee Related CN202065015U (en) | 2011-05-26 | 2011-05-26 | Steam by-pass valve of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065015U (en) |
-
2011
- 2011-05-26 CN CN2011201731434U patent/CN202065015U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20170526 |