CN219865315U - Damping radial vibration-proof supporting structure of hydraulic generator - Google Patents
Damping radial vibration-proof supporting structure of hydraulic generator Download PDFInfo
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- CN219865315U CN219865315U CN202321089068.2U CN202321089068U CN219865315U CN 219865315 U CN219865315 U CN 219865315U CN 202321089068 U CN202321089068 U CN 202321089068U CN 219865315 U CN219865315 U CN 219865315U
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- 238000013016 damping Methods 0.000 title claims abstract description 63
- 238000011068 loading method Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000036316 preload Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to a damping radial vibration-proof supporting structure of a hydraulic generator, which comprises the following components: the device comprises a frame support leg, a radial support frame, a damping pad precompression assembly, a radial pre-tightening force loading device, a base embedded part, a damping pad and a support frame, wherein the radial support frame, the damping pad and the damping pad precompression assembly are distributed inside and outside; one end of one radial support frame is connected with the support leg of the frame through a radial pre-tightening force loading device, one end of the other radial support frame is connected with the radial support foundation embedded part, the damping pad is arranged between the other ends of the two radial support frames, and the other ends of the two radial support frames are connected through a damping pad pre-compression assembly; the radial support foundation embedded part is embedded in the side wall of the generator concrete pit. The damping type radial vibration-proof supporting structure of the hydraulic generator is good in radial vibration effect of the generator set, low in requirement on concrete foundation and capable of reducing the difficulty of civil engineering design of a factory building.
Description
Technical Field
The utility model relates to the technical field of hydroelectric generating sets, in particular to a damping radial vibration-proof supporting structure of a hydroelectric generating set.
Background
The water and electricity is used as a clean energy source, meets the national sustainable development requirement, and the development strength is continuously obtained
With the development of high altitude and high water head hydropower stations such as Tibet and the like in China, the high-rotation-speed high-capacity hydraulic generator is increased
Groups will be more and more available. In order to ensure safe and stable operation of the high-rotation-speed high-capacity hydroelectric generating set, the generator frame is provided with necessary vibration-proof supports to improve the support rigidity of the radial bearing, so that the most effective measure for solving the problem of serious vibration of the high-rotation-speed high-capacity hydroelectric generating set is provided.
The radial support is a vibration-proof support structure commonly used for the generator frame; as the name suggests, the radial support directly transmits the radial load born by the generator frame to the concrete foundation through the radial support; because the hydroelectric generating set can run in cold state and hot state, the generator frame can generate certain thermal expansion along with the temperature rise of the generator in the radial direction, and for the set with radial support, the radial support must be full of sufficient support rigidity in order to meet the requirement of stable running from zero rotation speed to runaway rotation speed of the set, so that under the condition that the frame is radially constrained, the radial thermal expansion of the frame can generate a very large thermal expansion force, thereby bringing great difficulty to the design of a factory building.
The utility model of Chinese patent application number CN200920097230.9 relates to a radial supporting structure of a vertical hydroelectric generating set, which comprises a base plate pre-buried in a pit and support legs fixedly arranged on an upper frame, wherein the base plate is connected with a transition plate through a fastener, a support tube is welded on the inner circumferential wall of the transition plate, the end part of the support tube is provided with a cylindrical sleeve, a spherical support nail is arranged in the cylindrical sleeve, a locking nut is arranged on the spherical support nail, the end part of the spherical support nail is tightly attached to a round supporting block, a steel sleeve is sleeved outside the supporting block, a flange is fixedly arranged at the end part of the steel sleeve, the flange is connected with the support legs of the upper frame through a connecting piece, and a shear pin is arranged along the radial direction of the steel sleeve. The radial supporting structure is a rigid supporting structure, and can reduce radial vibration of the generator set, but has the defects of poor radial vibration effect of the generator set, higher requirement on a concrete foundation and difficulty in building and design of factory buildings; therefore, the hydraulic generator damping type radial vibration-proof supporting structure for reducing the radial vibration effect of the generator set is good, the requirement on a concrete foundation is low, and the difficulty in the civil engineering design of a factory building is reduced, so that the hydraulic generator damping type radial vibration-proof supporting structure becomes a problem to be solved urgently.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the damping radial vibration-proof supporting structure of the hydraulic generator, which has the advantages of better radial vibration reduction effect of the generator set, lower requirement on a concrete foundation and reduction of the difficulty of civil engineering design of a factory building.
The specific technical scheme of the utility model is as follows:
a hydraulic generator damped radial anti-vibration support structure comprising: the device comprises a frame support leg, a radial support frame, a damping pad precompression assembly, a radial pre-tightening force loading device, a base embedded part, a damping pad and a support frame, wherein the radial support frame, the damping pad and the damping pad precompression assembly are distributed inside and outside; one end of one radial support frame is connected with the support leg of the frame through a radial pre-tightening force loading device, one end of the other radial support frame is connected with the radial support foundation embedded part, the damping pad is arranged between the other ends of the two radial support frames, and the other ends of the two radial support frames are connected through a damping pad pre-compression assembly; the radial support foundation embedded part is embedded in the side wall of the generator concrete pit.
Preferably, the radial support frame includes: the two support plates are correspondingly connected with the two ends of the radial support tube one by one; the shape of the support plate is rectangular.
Preferably, the supporting plate at the other end of one radial supporting frame is provided with an annular groove, and the damping pad is a damping washer which is arranged in the annular groove and is matched with the annular groove; the damping washer is made of rubber.
Preferably, the damping pad precompression assembly includes: the support plate at the other end of one radial support frame is provided with a plurality of screw holes corresponding to the precompression bolts one by one, the support plate at the other end of the other radial support frame is provided with a plurality of outer through holes corresponding to the precompression bolts one by one, and the damping washer is provided with a plurality of inner through holes corresponding to the precompression bolts one by one; the precompression bolt passes through the outer through hole and the inner through hole and is in threaded connection with the screw hole; the precompression bolts are distributed along the circumference of the damping washer.
Preferably, the radial preload loading device includes: the two wedge-shaped keys are two vertical grooves which are arranged at the outer ends of the supporting legs of the stand and correspond to the two wedge-shaped keys one by one, and the two vertical wedge-shaped grooves are arranged on the supporting plate at one end of one radial supporting frame and correspond to the vertical grooves one by one and are opposite to the vertical grooves one by one; the vertical wedge-shaped groove is provided with an inclined plane which is matched with the wedge-shaped surface of the wedge-shaped key; the wedge-shaped key is inserted into the vertical groove and the vertical wedge-shaped groove; the cross-sectional shape of the vertical groove is rectangular.
Preferably, the radial preload loading device further comprises: a pressing plate for preventing the wedge-shaped key from loosening and falling out in the operation of the generator; the pressing plate presses the large end of the wedge-shaped key, and is connected with the supporting leg of the frame; the large end of the wedge-shaped key is positioned at the upper end.
Preferably, the frame support leg is provided with a support for supporting the lower end of a support plate at one end of a radial support frame; the material of the support is angle steel.
Preferably, the annular groove is a rectangular annular groove, and the damping gasket is a rectangular damping gasket; the radial support tube has a rectangular cross-sectional shape.
In order to ensure stable operation of the generator set in a cold state, when the damping radial vibration-proof supporting structure of the hydraulic generator is installed, necessary radial pre-tightening force loading is carried out on the support, and the installation steps and the radial pre-tightening force loading method are as follows:
1) Firstly, a damping washer made of rubber is arranged between two radial supporting frames, a precompression bolt is screwed down, the damping washer is precompressed to the designed thickness in advance, and the precompression bolt is locked to prevent the bolt from loosening;
2) One end of each of the two connected radial support frames is arranged on a support of a supporting leg of the frame, and a support plate positioned at one end of the other radial support frame is connected with a radial support foundation embedded part embedded in the concrete of the generator pit in a threaded manner through bolts;
3) The method comprises the steps of inserting a wedge key into a vertical groove formed in a supporting plate arranged on a supporting leg of a rack and a vertical wedge groove formed in one end of a radial supporting frame, tightening the wedge key, checking a precompressed bolt while tightening until the precompressed bolt starts to loosen (at the moment, the compression pretightening force of a damping washer is borne by the wedge key, the precompressed bolt is not pretightening force again), cutting the length of the redundant wedge key, installing a pressing plate, preventing the wedge key from loosening and running out in the later unit operation, and preventing the radial support from being unable to effectively bear the radial load of the rack.
So far, the installation of the damping type radial vibration-proof support is finished, and the pre-tightening force loading according to the design requirement is finished.
Compared with the prior art, the utility model has the beneficial effects that: the damping type radial vibration-proof supporting structure of the hydraulic generator has the advantages that the radial vibration effect of the generator set is reduced, the requirement on a concrete foundation is low, and the civil engineering design difficulty of a factory building is reduced; compared with the traditional radial support, a damping washer made of rubber is structurally introduced, and the damping washer has the characteristics of high bearing capacity for high-frequency loads and weaker bearing capacity for low-frequency loads; the radial load born by the frame (frame supporting leg) during the operation of the generator mainly consists of the mechanical unbalance force of the rotating part of the generator set and the eccentric magnetic pulling force generated by the uneven air gap of the stator and the rotor of the generator, and the two loads are related to the rotation frequency of the generator set and belong to high-frequency loads; the thermal expansion acting force of the frame is gradually increased along with the slow rise of the temperature, so that the load belongs to a load with extremely low change frequency, and the damping material can effectively reduce the acting force of thermal expansion on the concrete foundation of the generator; it is this kind of characteristic that damping material had, damping type radial vibration-proof support can effectually bear the radial dynamic load of frame, can reduce the degree of difficulty that the frame thermal expansion was to civil engineering again, and this kind of radial support's structure is also simpler simultaneously, is favorable to the maintenance of generator greatly. The damping washer is arranged in the annular groove, so that the damping washer is prevented from sliding. Radial pretightening force is loaded and adjusted through the wedge key, and adjustment is convenient. The pressing plate presses the large end of the wedge-shaped key, and the pressing plate is connected with the supporting leg of the frame, so that the wedge-shaped key can be prevented from loosening and falling off in the operation of the generator. The support of the lower end of the supporting plate for supporting one end of the radial supporting frame is arranged on the supporting leg of the frame, so that the support of the radial supporting frame is stable.
Drawings
FIG. 1 is a schematic view of a construction of the present utility model;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of a damping washer;
fig. 4 is a schematic structural view of a wedge key.
In the figure: the support comprises a frame support leg 1, a radial support base embedded part 2, a radial support tube 3, a support plate 4, an annular groove 5, a damping washer 6, a precompression bolt 7, an inner through hole 8, a wedge-shaped key 9, a vertical groove 10, a vertical wedge-shaped groove 11, a pressing plate 12 and a support 13.
Detailed Description
The utility model is further described below with reference to the drawings.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4: a hydraulic generator damped radial anti-vibration support structure comprising: the device comprises a frame support leg 1, a radial support base embedded part 2, two radial support frames distributed inside and outside, a damping pad precompression assembly and a radial pre-tightening force loading device; the radial support foundation embedded part 2 is embedded in the side wall of the generator concrete pit.
The radial support frame include: the radial support pipes 3, two support plates 4 are welded with two ends of the radial support pipes 3 in a one-to-one correspondence manner; the support plate 4 at one end of one radial support frame is in threaded connection with the frame support leg 1, the support plate 4 at one end of the other radial support frame is in threaded connection with the radial support foundation embedded part 2, and the shape of the support plate 4 is rectangular.
The radial pretightening force loading device comprises: the two wedge-shaped keys 9, two vertical grooves 10 which are arranged at the outer end of the stand supporting leg 1 and are in one-to-one correspondence with the two wedge-shaped keys 9, and two vertical wedge-shaped grooves 11 which are arranged on the supporting plate 4 at one end of one radial supporting frame and are in one-to-one correspondence with the vertical grooves 10 are used for preventing the wedge-shaped keys 9 from loosening and falling out during the operation of the generator; the vertical wedge-shaped groove 11 is provided with an inclined plane which is matched with the wedge-shaped surface of the wedge-shaped key 9; the wedge-shaped key 9 is inserted into the vertical groove 10 and the vertical wedge-shaped groove 11, the pressing plate 12 presses the large end of the wedge-shaped key 9, and the pressing plate 12 is in threaded connection with the frame support leg 1; the large end of the wedge-shaped key 9 is positioned at the upper end. The cross section of the vertical groove 10 is rectangular, the annular groove 5 is a rectangular annular groove, and the damping gasket 6 is a rectangular damping gasket; the radial support tube 3 has a rectangular cross-sectional shape.
The supporting plate 4 positioned at the other end of the radial supporting frame is provided with an annular groove 5, and the damping cushion is a damping washer 6 which is arranged in the annular groove 5 and is matched with the annular groove 5; the damping washer 6 is made of rubber. The damping pad precompression assembly includes: sixteen precompression bolts 7, sixteen screw holes (not shown) corresponding to the precompression bolts 7 one by one are formed in the supporting plate 4 at the other end of one radial supporting frame, sixteen outer through holes (not shown) corresponding to the precompression bolts 7 one by one are formed in the supporting plate 4 at the other end of the other radial supporting frame, and sixteen inner through holes 8 corresponding to the precompression bolts 7 one by one are formed in the damping washer 6; the precompression bolt 7 passes through the outer through hole and the inner through hole 8 and is in threaded connection with the screw hole; the precompression bolts 7 are distributed circumferentially along the damping washer 6.
The frame support leg 1 is provided with a support 13 for supporting the lower end of a support plate 4 at one end of a radial support frame; the material of the support 13 is angle steel.
In addition to the above embodiments, the technical features or technical data of the present utility model may be rearranged and combined within the scope of the claims and the description of the present utility model to constitute new embodiments, which may be implemented without inventive effort by those skilled in the art, and thus, embodiments of the present utility model not described in detail should be considered as embodiments of the present utility model within the scope of the protection of the present utility model.
Claims (8)
1. A hydraulic generator damped radial anti-vibration support structure comprising: frame landing leg, characterized by, hydraulic generator damping type radial antivibration bearing structure still include: the device comprises a radial support foundation embedded part, two radial support frames distributed inside and outside, a damping pad precompression assembly and a radial pretightening force loading device; one end of one radial support frame is connected with the support leg of the frame through a radial pre-tightening force loading device, one end of the other radial support frame is connected with the radial support foundation embedded part, the damping pad is arranged between the other ends of the two radial support frames, and the other ends of the two radial support frames are connected through the damping pad pre-compression assembly.
2. The damped radial vibration isolator support structure of claim 1, wherein said radial support frame comprises: the radial support tube, two support plates that are connected with radial support tube both ends one-to-one.
3. The damping radial vibration-proof supporting structure of a hydraulic generator according to claim 2, wherein the supporting plate at the other end of one radial supporting frame is provided with an annular groove, and the damping pad is a damping washer which is arranged in the annular groove and is matched with the annular groove.
4. The hydraulic generator damped radial vibration-proof support structure of claim 1, wherein said damping pad precompression assembly comprises: the support plate at the other end of one radial support frame is provided with a plurality of screw holes corresponding to the precompression bolts one by one, the support plate at the other end of the other radial support frame is provided with a plurality of outer through holes corresponding to the precompression bolts one by one, and the damping washer is provided with a plurality of inner through holes corresponding to the precompression bolts one by one; the precompression bolt passes through the outer through hole and the inner through hole and is in threaded connection with the screw hole.
5. The damped radial vibration isolation support structure of a hydraulic generator of claim 1, wherein said radial preload loading means comprises: the two wedge-shaped keys are two vertical grooves which are arranged at the outer ends of the supporting legs of the stand and correspond to the two wedge-shaped keys one by one, and the two vertical wedge-shaped grooves are arranged on the supporting plate at one end of one radial supporting frame and correspond to the vertical grooves one by one and are opposite to the vertical grooves one by one; the vertical wedge-shaped groove is provided with an inclined plane which is matched with the wedge-shaped surface of the wedge-shaped key; the wedge key is inserted into the vertical groove and the vertical wedge groove.
6. The damped radial vibration isolation support structure of a hydraulic generator of claim 5, wherein said radial preload loading means further comprises: a pressing plate for preventing the wedge-shaped key from loosening and falling out in the operation of the generator; the pressing plate presses the large end of the wedge-shaped key, and the pressing plate is connected with the supporting leg of the frame.
7. A damped radial vibration isolation support structure for a hydraulic generator according to claim 1, claim 5 or claim 6, wherein said frame legs are provided with a support for supporting the lower end of a support plate at one end of a radial support frame.
8. A damped radial vibration-proof support structure for a hydro-generator as defined by claim 3 wherein said annular groove is a rectangular annular groove and said damping washer is a rectangular damping washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089068.2U CN219865315U (en) | 2023-05-08 | 2023-05-08 | Damping radial vibration-proof supporting structure of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089068.2U CN219865315U (en) | 2023-05-08 | 2023-05-08 | Damping radial vibration-proof supporting structure of hydraulic generator |
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| Publication Number | Publication Date |
|---|---|
| CN219865315U true CN219865315U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321089068.2U Active CN219865315U (en) | 2023-05-08 | 2023-05-08 | Damping radial vibration-proof supporting structure of hydraulic generator |
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| Country | Link |
|---|---|
| CN (1) | CN219865315U (en) |
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2023
- 2023-05-08 CN CN202321089068.2U patent/CN219865315U/en active Active
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