CN214577224U - Generator protection device - Google Patents
Generator protection device Download PDFInfo
- Publication number
- CN214577224U CN214577224U CN202120619950.8U CN202120619950U CN214577224U CN 214577224 U CN214577224 U CN 214577224U CN 202120619950 U CN202120619950 U CN 202120619950U CN 214577224 U CN214577224 U CN 214577224U
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- CN
- China
- Prior art keywords
- valve
- protection device
- rod
- connecting rod
- generator protection
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- 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.)
- Withdrawn - After Issue
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- 238000005096 rolling process Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
A generator protection device. The low-pressure speed regulation valve is an important part for regulating the air extraction quantity and the air extraction pressure of the steam turbine, and the concentricity of the feedback rod and the sleeve is difficult to guarantee due to the high-frequency vibration of the low-pressure speed regulation valve of the steam turbine generator. The utility model discloses the constitution includes: low pressure speed governing valve body (9), valve base (4), valve connecting rod (8) and two LVDT sensors (16), two feedback rod (3) top and the type frame (2) of returning of LVDT sensor pass through the bolt fastening, the type frame of returning in put rotor 1, the cylinder pole welding of rotor on the valve connecting rod. The utility model is used for generator protection device.
Description
Technical Field
The utility model relates to a generator protection device.
Background
The turbo generator low pressure speed governing valve is the important part that adjusts the air extraction volume and the pressure of bleeding of steam turbine, feedback rod through at two LVDT sensors connects on the connecting plate jointly, then weld the connecting plate on the valve connecting rod, the motion of feedback rod is realized to the motion through the valve connecting rod, reach the effect of monitoring valve aperture, but because turbo generator low pressure speed governing valve has high-frequency vibration, make feedback rod and telescopic concentricity difficult to guarantee, lead to there being friction and wearing and tearing between feedback rod and the sleeve, long-time wearing and tearing will lead to measuring accuracy's the reduction by a wide margin, make it the fracture of feedback rod.
Disclosure of Invention
The utility model aims at providing a generator protection device.
The above purpose is realized by the following technical scheme:
a generator protection device, comprising: the valve comprises a low-pressure speed-regulating valve body, a valve base, a valve connecting rod and two LVDT sensors, wherein the tops of feedback rods of the two LVDT sensors are fixed with a return frame through bolts, a rotating head is arranged in the return frame, and a cylindrical rod of the rotating head is welded on the valve connecting rod;
the rotary head comprises an inner sphere and two hemispherical covers, a plurality of spherical grooves are formed in the surface of the inner sphere, rolling balls are placed in each spherical groove, the hemispherical covers are buckled on the two sides of the inner sphere respectively and fixed through bolts, each hemispherical cover is welded with a semicircular rod, and the semicircular rods are butted to form a cylindrical rod.
In the generator protection device, the surface of the hemispherical cover is provided with a ball hole, and the position of the ball hole corresponds to that of the ball groove.
Has the advantages that:
1. the utility model discloses a connect mode in the head inserts back type frame rotates, the spin at the upper and lower both ends of head all with the inside upper and lower surface contact of back type frame, has reduced the vibration of low pressure speed governing valve body and valve connecting rod like this and has deflected the influence to feedback pole and coil, the effectual accuracy of having guaranteed LVDT sensor stroke measurement, has guaranteed generating set's safe operation.
2. The utility model discloses a rotating the head and inserting the form of returning the type frame, rotating the head and can not producing the influence to the feedback pole when the each direction slightly rotates, solved easy wearing and tearing of feedback pole, cracked problem.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the structure of the rotary head;
FIG. 3 is a side view of the rotator head;
FIG. 4 is a rear view of the rotator head;
in the figure: 1. rotating the head; 2. a back-shaped frame; 3. a feedback lever; 4. a valve base; 5. mounting a back plate; 6. a coil sleeve; 7. a fixing clip; 8. a valve connecting rod; 9. a low-pressure speed-regulating valve body; 10. a ball hole; 11. a hemispherical cover; 12. an inner sphere; 13. a ball groove; 14. rolling a ball; 15. a semi-circular rod; 16. an LVDT sensor.
The specific implementation mode is as follows:
example 1:
a generator protection device, comprising: the valve comprises a low-pressure speed-regulating valve body 9, a valve base 4, a valve connecting rod 8 and two LVDT sensors 16, wherein coil sleeves 6 of the two LVDT sensors are fixed on an installation back plate 5 through fixing clamps 7, the installation back plate is fixed on the valve base through bolts, the tops of feedback rods 3 of the two LVDT sensors are fixed with a back-shaped frame 2 through bolts, a rotating head 1 is placed in the back-shaped frame, and a cylindrical rod of the rotating head is welded on the valve connecting rod;
the rotating head comprises an inner sphere 12 and two hemisphere covers 11, the surface of the inner sphere is provided with a plurality of sphere grooves 13, each sphere groove is internally provided with a rolling sphere 14, the hemisphere covers are buckled on the two sides of the inner sphere respectively and are fixed through bolts, each hemisphere cover is welded with a semicircle rod 15 and two semicircle rods which are butted to form a cylindrical rod, and the cylindrical rod is welded on a valve connecting rod.
Example 2:
according to the generator protection device in the embodiment 1, the surface of the hemispherical cover is provided with the ball hole 10, and the ball hole corresponds to the position of the ball groove.
The working principle is as follows: the motion that drives the feedback rod through the motion of valve connecting rod when using realizes the monitoring of valve aperture, simultaneously under the condition of low pressure speed governing valve body and valve connecting rod vibration, arouses to rotate the head slightly in each direction, owing to rotate the head and be the spheroid structure, the position change can not exert an influence to the position of returning the type frame like this, can guarantee that the feedback rod can vertical upward movement always, guarantees feedback rod and the telescopic concentricity of coil.
Claims (2)
1. A generator protection device, comprising: low pressure speed governing valve body, valve base, valve connecting rod and two LVDT sensors, characterized by: the tops of the feedback rods of the two LVDT sensors are fixed with a square frame through bolts, a rotating head is arranged in the square frame, and a cylindrical rod of the rotating head is welded on the valve connecting rod;
the rotary head comprises an inner sphere and two hemispherical covers, a plurality of spherical grooves are formed in the surface of the inner sphere, rolling balls are placed in each spherical groove, the hemispherical covers are buckled on the two sides of the inner sphere respectively and fixed through bolts, each hemispherical cover is welded with a semicircular rod, and the semicircular rods are butted to form a cylindrical rod.
2. The generator protection device of claim 1, wherein: the surface of the hemispherical cover is provided with a ball hole, and the ball hole corresponds to the ball groove in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619950.8U CN214577224U (en) | 2021-03-26 | 2021-03-26 | Generator protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619950.8U CN214577224U (en) | 2021-03-26 | 2021-03-26 | Generator protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214577224U true CN214577224U (en) | 2021-11-02 |
Family
ID=78322101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120619950.8U Withdrawn - After Issue CN214577224U (en) | 2021-03-26 | 2021-03-26 | Generator protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214577224U (en) |
-
2021
- 2021-03-26 CN CN202120619950.8U patent/CN214577224U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211102 Effective date of abandoning: 20240105 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211102 Effective date of abandoning: 20240105 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |