CN203918956U - Be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test - Google Patents
Be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test Download PDFInfo
- Publication number
- CN203918956U CN203918956U CN201420264019.2U CN201420264019U CN203918956U CN 203918956 U CN203918956 U CN 203918956U CN 201420264019 U CN201420264019 U CN 201420264019U CN 203918956 U CN203918956 U CN 203918956U
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- China
- Prior art keywords
- main body
- stop valve
- inlet throttle
- main inlet
- valve
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model belongs to field of generating equipment, relates to a kind of device that is applicable to turbine high-pressure main inlet throttle-stop valve and closes test, comprises main body, is arranged on the handle of main body wall; The design of this device is succinct, the main body arranging can stop the stroke of main inlet throttle-stop valve valve closing, the predetermined length of main body makes valve can make valve rod carry out stroke by a small margin, avoids main inlet throttle-stop valve to occur the phenomenon of complete shut-down, has improved the security performance of Steam Turbine when main inlet throttle-stop valve is closed test.
Description
Technical field
The utility model belongs to field of generating equipment, relates in particular to the device that is applicable to turbine high-pressure main inlet throttle-stop valve and closes test.
Background technology
The high pressure main inlet throttle-stop valve of steam power plant be steam turbine for the admission of fast shut-off steam turbine, realize the protective device of halt turbines, high pressure main inlet throttle-stop valve is the protective device that prevents Steam Turbine Over-speed Accident most critical.Once steam turbine hypervelocity, the major accident such as easily cause that steam turbine driving, the fracture of axle system and steam turbine are scrapped, especially, concerning large-scale unit, its economic loss will reach several necessarily even more than one hundred million units; If there are personnel at scene, also can cause the serious accidents such as personal injury.Main inlet throttle-stop valve, is made up of valve body and servomotor two parts, can block immediately the admission of steam turbine in the time of the state of emergency, makes unit quick shutdown to reach protection unit object.For security consideration, steam turbine is high to main inlet throttle-stop valve quick closedown performance requirement.In use to strengthen especially the periodic inspection to main inlet throttle-stop valve, pinpoint the problems and will keep in repair in time.At present, in the time doing main inlet throttle-stop valve movement test, the valve of main inlet throttle-stop valve may be tested by complete shut-down, also may test half pass, and also may test is by a small margin crawl 10% stroke test; Total travel test is that complete shut-down test can affect sub-load fluctuation, need carry out communication with scheduling, avoids checking energy.The best way is that crawl is combined test with total travel.At present, in the time only carrying out a some dynamic test, there will be maloperation to make the phenomenon of main inlet throttle-stop valve complete shut-down, thereby affect the security of unit operation.
Summary of the invention
For the defect of prior art, the utility model proposes a kind of device that is applicable to turbine high-pressure main inlet throttle-stop valve and closes test, it is characterized in that: comprise main body, be arranged on the handle of main body wall; Described main body is one section of columniform steel main body, and at the outer wall of steel main body, the breach that connects main body is set along axis; The cross section of described breach takes the shape of the letter U, on described main body bottom surface and the position being positioned in the middle of breach bottom be provided with U-lag along the axis of steel main body; Described handle is L-shaped round steel, and curved handle direction is along steel main body axis, is arranged on the main body outer wall of a side relative to breach, and handle one end is welded on main body outer wall and is positioned at the bottom of U-lag, and the other end is unsettled and anti-slip rubber cover is installed.
The size of described breach matches with the main valve stem of main inlet throttle-stop valve.
The position of welding one end of described handle is positioned at the centre of principal length direction, and is positioned on the extended line of U-lag center line.
Beneficial effect:
The utility model design is succinct, the main body arranging can stop the stroke of main inlet throttle-stop valve valve closing, the predetermined length of main body makes valve can make valve rod carry out stroke by a small margin, avoids main inlet throttle-stop valve to occur the phenomenon of complete shut-down, has improved the security performance of Steam Turbine when main inlet throttle-stop valve is closed test.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
1. rubber sleeve, 2. handle, 3. main body, 4. breach, 5.U shape groove.
Fig. 2 is the structural representation of another angle of the utility model;
1. rubber sleeve, 2. handle, 3. main body, 4. breach, 5.U shape groove.
Detailed description of the invention
Now further illustrate by reference to the accompanying drawings detailed description of the invention of the present utility model, as shown in Figure 1, main body 3 is one section of cylindrical steel main body, be that 80 mm lengths are to make the perforation breach 4 of wide 40 millimeters on the round steel of 400 millimeters at diameter, the cross section of breach 4 is U-shapeds, the size of breach 4 matches with the main valve stem of main inlet throttle-stop valve, on main body 3 one end faces and be positioned at the position of breach 4 in the middle of bottoms and arrange along the axis of steel main body the U-lag 5 of 50 millimeters of width 30 millimeters deep; Adopting diameter is the round steel of 500 millimeters of 12 mm lengths, be bent into L-type, long 300 millimeters of one end, one end is grown 200 millimeters as handle 2, handle 2 one end are welded on to the centre that is positioned at main body 3 length directions, and be positioned on main body 3 outer surfaces of bottom one side of breach 4, bending direction is consistent with main body 3 axis directions and point to U-shaped groove 5 one end, and the other end is installed anti-slip rubber cover 1.When use, by the protruding phase cutting ferrule on U-lag 5 and main inlet throttle-stop valve valve, main body 3 is coordinated stable with main inlet throttle-stop valve valve rod, and make main body 3 accurate positioning on main valve stem, while closing experiment as main valve, the movement travel of main valve stem is subject to the restriction of this device, just can realize main inlet throttle-stop valve and close the event generation of avoiding complete shut-down in test, handle 2 is that rubber sleeve 1 is in the time of handle 2, to avoid slippage for moving easily this device.
Claims (3)
1. be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test, it is characterized in that: comprise main body, be arranged on the handle of main body wall; Described main body is one section of columniform steel main body, and at the outer wall of steel main body, the breach that connects main body is set along axis; The cross section of described breach takes the shape of the letter U, on described main body bottom surface and the position being positioned in the middle of breach bottom be provided with U-lag along the axis of steel main body; Described handle is L-shaped round steel, and curved handle direction is along steel main body axis, is arranged on the main body outer wall of a side relative to breach, and handle one end is welded on main body outer wall and is positioned at the bottom of U-lag, and the other end is unsettled and anti-slip rubber cover is installed.
2. the device that is applicable to turbine high-pressure main inlet throttle-stop valve and closes test according to claim 1, is characterized in that: the size of described breach matches with the main valve stem of main inlet throttle-stop valve.
3. the device that is applicable to turbine high-pressure main inlet throttle-stop valve and closes test according to claim 1, is characterized in that: the position of welding one end of described handle is positioned at the centre of principal length direction, and is positioned on the extended line of U-lag center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264019.2U CN203918956U (en) | 2014-05-22 | 2014-05-22 | Be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264019.2U CN203918956U (en) | 2014-05-22 | 2014-05-22 | Be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203918956U true CN203918956U (en) | 2014-11-05 |
Family
ID=51814831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264019.2U Expired - Fee Related CN203918956U (en) | 2014-05-22 | 2014-05-22 | Be applicable to turbine high-pressure main inlet throttle-stop valve and close the device of test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203918956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633268A (en) * | 2014-12-06 | 2015-05-20 | 无锡高卓流体设备有限公司 | Steam turbine main throttle valve fully closing experiment structure |
-
2014
- 2014-05-22 CN CN201420264019.2U patent/CN203918956U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633268A (en) * | 2014-12-06 | 2015-05-20 | 无锡高卓流体设备有限公司 | Steam turbine main throttle valve fully closing experiment structure |
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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: 20141105 Termination date: 20150522 |
|
| EXPY | Termination of patent right or utility model |