CN210239898U - Middle hole plugging device for rotating shaft of middle-dismantling type water turbine - Google Patents
Middle hole plugging device for rotating shaft of middle-dismantling type water turbine Download PDFInfo
- Publication number
- CN210239898U CN210239898U CN201920781644.7U CN201920781644U CN210239898U CN 210239898 U CN210239898 U CN 210239898U CN 201920781644 U CN201920781644 U CN 201920781644U CN 210239898 U CN210239898 U CN 210239898U
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- water turbine
- plugging device
- rotating shaft
- mesopore
- pivot
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 54
- 125000006850 spacer group Chemical group 0.000 claims abstract description 7
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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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
Abstract
The utility model discloses a well tear formula hydraulic turbine pivot mesopore plugging device open, this plugging device is located the cavity between hydraulic turbine pivot and the runner, plugging device, including the roof, the roof is attached and is used for the mesopore of shutoff hydraulic turbine pivot at the lower extreme of hydraulic turbine pivot, roof upper portion upwards the arch has the spacer sleeve, the spacer sleeve suit is in the mesopore of hydraulic turbine pivot, the bottom of roof is fixed with decurrent support telescopic machanism, the lower part that supports telescopic machanism is fixed with conical base, conical base and the inner wall looks adaptation of runner, conical base suit is at the mesopore of shutoff runner in, the shutoff is effectual, can not cause the harm to original equipment, has huge economic and social.
Description
The technical field is as follows:
the utility model belongs to the technical field of hydraulic turbine equipment, concretely relates to in tear formula hydraulic turbine pivot mesopore plugging device open.
Background art:
what pumped storage power station had is secret factory building formula structure, and the unit pivot includes: the water turbine shaft, the intermediate shaft, the generator shaft and the like, the unit is of a vertical structure, and the design and maintenance mode is that the unit is disassembled in the middle. The unit shafting is from top to bottom generator shaft, lower guide shaft, jackshaft, water turbine shaft in proper order. In order to reduce the weight of the equipment, the rotating shafts are of hollow structures, and the lowest ends of the rotating shafts of the water turbines are arranged in the rotating wheel chambers and connected with the rotating wheels through bolts. In order to prevent fluids such as tail water, gas and the like with pressure from leaking out along the central hole, a plugging plate is required to be arranged in the hole in the rotating shaft, because the sealing of the plugging plate is very important, once the water leakage happens due to poor sealing, serious consequences can be caused, and similar accidents happen to domestic existing power plants.
The method for plugging the processing center hole of the water turbine shaft in the existing manufacturing plant is generally that a plane sealing groove is formed in a carbon steel flange plugging plate, the carbon steel flange plugging plate is fastened to the position of the processing center hole through a common bolt, and then the surfaces of the flange plugging plate and the fastening bolt are coated with anti-rust paint. After the unit of a hydraulic power plant is put into operation, the anticorrosive paint gradually falls off along with the increase of the operation time (such as ten years of operation), the corrosion of a carbon steel flange with a sealing effect and a fastening bolt of the carbon steel flange gradually becomes severe, the risk of sealing failure of the carbon steel flange is gradually increased, meanwhile, a hole is drilled in a rotating shaft of a water turbine, the anticorrosive treatment is difficult to achieve in the drilled hole, water entering the inner part of the mesopore has certain corrosivity, the rotating shaft of the water turbine can be corroded, and the safety of equipment. For this reason, it is obviously necessary to develop a device for plugging the holes in the rotating shaft of the water turbine.
The invention content is as follows:
defect and problem to existing equipment existence, the utility model provides a long service life need not cause destruction to existing equipment, and the shutoff is effectual for the device of hydraulic turbine pivot mesopore shutoff, the effectual current plugging device of having solved, life is short, and factor of safety is low, the poor problem of shutoff effect.
The utility model provides a scheme that its technical problem adopted is: the utility model provides a well formula of tearing open water turbine pivot mesopore plugging device is located the cavity between water turbine pivot and the runner, runner upper end fixed mounting have the water turbine pivot, the upper end of water turbine pivot is fixed with the jackshaft, water turbine pivot and jackshaft be hollow shaft, a serial communication port, plugging device, including the roof, the roof is attached in the mesopore that the lower extreme of water turbine pivot is used for the shutoff water turbine pivot, roof upper portion upwards the arch has the spacer sleeve, the spacer sleeve suit is in the mesopore of water turbine pivot, the bottom of roof is fixed with decurrent support telescopic machanism, supports telescopic machanism's lower part fixedly connected with conical base, conical base and the inner wall looks adaptation of runner, conical base suit is used for the shutoff runner mesopore in the mesopore of.
Furthermore, the periphery of the outer side of the conical base is coated with a water stop rubber layer.
Further, support telescopic machanism, including guide cylinder, branch and elastomeric element, the guide cylinder is followed vertical fixing on the lower bottom surface of roof, the guide cylinder endotheca be equipped with elastomeric element, elastomeric element's upper end is fixed in the guide cylinder or on the bottom surface of roof, branch suit in the guide cylinder and with elastomeric element's lower extreme fixed connection, the lower extreme of branch is fixed on the footstock.
Furthermore, the top surface on the roof and the lateral surface of spacer sleeve be provided with the seal groove, the sealing washer is adorned in the seal groove.
Furthermore, the base is provided with a mounting hanging ring.
Furthermore, a blocking block is arranged in a cavity of the water turbine shaft and the middle shaft, the blocking block is in a circular truncated cone shape, a pressing plate is fixed on the upper portion of the blocking block, the pressing plate is attached to the lower end of the middle shaft, and the lower end of the blocking block is sleeved in a middle hole of the water turbine rotating shaft.
The utility model has the advantages that: the utility model is novel and unique, has reasonable structure, can be directly installed without drilling independently by additionally arranging the telescopic plugging device on the original equipment, has simple installation and reduces the damage to the original device; along with screw up the bolt of connecting hydraulic turbine pivot and runner, the support telescopic machanism of setting between hydraulic turbine pivot and runner can push down and touch conical foundation, compress tightly conical foundation in the cavity of runner, it also can upwards push up tight roof to support telescopic machanism simultaneously, both ends are sealed simultaneously, it is effectual to compress tightly, it is adjustable to compress tightly intensity, high durability and convenient use, it is little to original pivot harm, the service life of the hydraulic turbine has been increased, the cost of equipment maintenance has been reduced, it is sealed effectual, the effectual life who has solved current plugging device existence is short, safety factor is low, the poor problem of plugging effect, low cost, the usage is big, huge economy and social have.
Drawings
Fig. 1 is a schematic view of the installation state of the present invention.
Fig. 2 is another installation state diagram of the present invention.
Fig. 3 is a schematic structural view of the plugging device of the present invention.
Fig. 4 is a schematic structural view of the support telescoping mechanism of the present invention.
Fig. 5 is another schematic structural diagram of the conical base of the present invention.
Fig. 6 is the schematic diagram of the position of the plugging block of the present invention.
Fig. 7 is a schematic structural diagram of the prior art.
The reference numbers in the figures are: the hydraulic turbine sealing device comprises a rotating wheel 1, a fixing hole 2, a compression bolt 3, a water turbine rotating shaft 4, a plugging device 5, a blocking sleeve 6, a top plate 7, a supporting telescopic mechanism 8, a conical base 9, a sealing ring 10, a supporting rod 11, a guide cylinder 12, an elastic component 13, a fixing plate 14, a middle shaft 15, a plugging block 16, a plugging plate 17, a limiting hole 18, a water stopping rubber layer 19 and a sub-base 20.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the drawings and examples.
Example 1: the existing plugging mode is as shown in fig. 7, holes are drilled on two sides of a rotating shaft 4 of a water turbine, and a plugging plate is fixed at the lower part of the rotating shaft 4 of the water turbine by a compression bolt 3 and used for plugging a middle hole of the rotating shaft 4 of the water turbine. In order to solve the existing problems, the utility model aims to provide a plugging device for a middle hole of a rotating shaft of a center-dismantling type water turbine, which is shown in figure 1, the plugging device 5 is installed in a cavity between the rotating shaft 4 of the water turbine and a rotating wheel 1, a fixing hole 2 and a limiting hole 18 are arranged on the periphery of the rotating shaft of the water turbine, and as shown in figure 2, the rotating shaft 4 of the water turbine and the rotating wheel 1 are fixed together by screwing a tightening screw rod 3; a top plate 7 is attached to the lower part of the water turbine rotating shaft 4 and used for plugging a middle hole of the water turbine rotating shaft 4, the top plate 7 is square or circular, the width of the top plate 7 is larger than the middle hole of the water turbine rotating shaft 4 and smaller than the middle hole of the rotating wheel 1; as shown in fig. 3, a raised circular baffle sleeve 6 is upwards welded in the center of the top plate, the baffle sleeve 6 and the top plate 7 are concentrically arranged and used for positioning the top plate, the diameter of the baffle sleeve 6 is matched with the diameter of a middle hole of a rotating shaft of a water turbine and can be sleeved in the middle hole of the rotating shaft 4 of the water turbine, sealing grooves are formed in the upper top surface of the top plate 7 and the periphery of the outer side of the baffle sleeve 6, sealing rings 10 are sleeved in the sealing grooves, double-layer sealing rings are used for sealing the middle hole, and the sealing.
The bottom surface of roof 7 on install and support telescopic machanism 8, the bottom of supporting telescopic machanism 8 is connected with conical base 9, conical base 9 attached on 1 hollow inner wall of runner, conical base 9 and runner 1's toper inner wall looks adaptation to the outside cladding at conical base 9 has stagnant water rubber layer 19, compression support telescopic machanism 8 can compress tightly conical base 9 downwards, conical base 9 can lower chucking and sealed runner mesopore, install installation rings simultaneously in conical base 9's both sides, it is convenient to get and put, is convenient for install and maintain.
Support telescopic machanism 8, including guide cylinder 12, branch 11 and elastomeric element 13, guide cylinder 12 have four, fix on the four corners of roof 7 bottom surface along vertical respectively, as shown in fig. 4, every guide cylinder endotheca be equipped with elastomeric element 13, elastomeric element 13 be compression spring, elastomeric element 13's upper end is fixed in guide cylinder 12 or on the bottom surface of roof 7, guide cylinder 12 in all the cover be equipped with branch 11, the upper end of branch 11 is connected with elastomeric element 13 through the slider, the four corners on conical foundation 9 upper portion is fixed to the lower extreme of branch 11.
The original height of the supporting telescopic mechanism 8 is h1, and by screwing the tightening screw 3 on the rotating shaft of the water turbine, the rotating shaft 4 of the water turbine can be pressed against the top plate 7 to compress the supporting telescopic mechanism 8. At this time, the height of the supporting telescopic mechanism 8 is h2, the deformation amount h3= h1-h2 generated by the elastic component 13, due to the pressure generated by the deformation of the elastic component, the supporting telescopic mechanism 8 can downwardly press the conical base 9 to press the conical base 9 in the inner cavity of the central hole of the rotating wheel 1, and the conical base 9 is matched with the inner cavity of the rotating wheel 1, so that the conical base 9 is in sealing contact with the central hole of the rotating wheel 1 in a pressing manner to play a sealing role. Simultaneously, the pressure generated downwards by the compression spring can be adjusted by using springs with different elasticity, can be selected according to the requirements of different equipment, is good in sealing effect, simple to use, free of drilling the original equipment, free of damage to the original equipment, reasonable in structure, low in cost and convenient to popularize and use.
Example 2: this embodiment is basically the same as embodiment 1, and its difference lies in, as shown in fig. 6, the hydraulic turbine pivot 4 and the jackshaft 15 between have square cavity, install the shutoff piece 16 in the cavity, shutoff piece 16 be the round platform shape, the upper portion of shutoff piece 16 is fixed with the clamp plate, the clamp plate is attached at the lower extreme of jackshaft 15, the lower extreme suit of shutoff piece 16 is in the centre bore of hydraulic turbine pivot 4, when installing jackshaft 15, the bottom of jackshaft 15 can press the up end of shutoff piece 16, the lower part suit of shutoff piece 16 is sealed in the centre bore of hydraulic turbine pivot 4, rational in infrastructure, sealing performance is good.
Example 3: the present embodiment is substantially the same as embodiment 1, and is different from embodiment 1 in that, as shown in fig. 5, the conical base 9 is formed by splicing four sub-bases 20 having the same shape, the bottom of each sub-base 20 is provided with 3 screw holes, the four sub-bases are fixedly connected together by a fixing plate 14 through bolts, the centers of the upper portions of the sub-bases are respectively fixed with a supporting rod 11, the supporting rods 11 are sleeved in the guide cylinders 12 and are connected with elastic members 13, the fixed upper ends of the guide cylinders 12 are fixed with fixing seats, the four corners of the fixing seats and the top plate are provided with screw holes, and the fixing seats are fixed at the bottom of the top plate 7 through bolts. When the maximum diameter of conical base was greater than the runner mesopore like this, can fix conical base in the inner chamber of runner through this embodiment, rational in infrastructure, application scope is wide.
Therefore, the utility model discloses install telescopic plugging device additional on original equipment, need not drill alone just can the direct mount, the installation is simple, the harm to original device has been reduced, the lower part of this plugging device's upper end closed turbine pivot, the inner chamber of runner is sealed to the lower extreme, both ends are sealed simultaneously, it is effectual to compress tightly, it is adjustable to compress tightly intensity, high durability and convenient use, it is little to original pivot harm, the service life of turbine runner has been increased, the cost of plant maintenance has been reduced, the security performance of equipment has been increased, the emergence probability of turbine accident has been reduced, it is sealed effectual, the effectual life who has solved current plugging device existence is short, safety factor is low, the poor problem of plugging effect, low cost, the usage is big, huge economy and social have.
Claims (6)
1. The utility model provides a well formula of tearing open water turbine pivot mesopore plugging device is located the cavity between water turbine pivot and the runner, runner upper end fixed mounting have the water turbine pivot, the upper end of water turbine pivot is fixed with the jackshaft, water turbine pivot and jackshaft be hollow shaft, a serial communication port, plugging device, including the roof, the roof is attached in the mesopore that the lower extreme of water turbine pivot is used for the shutoff water turbine pivot, roof upper portion upwards the arch has the spacer sleeve, the spacer sleeve suit is in the mesopore of water turbine pivot, the bottom of roof is fixed with decurrent support telescopic machanism, supports telescopic machanism's lower part fixedly connected with conical base, conical base and the inner wall looks adaptation of runner, conical base suit is used for the shutoff runner mesopore in the mesopore of.
2. The center hole plugging device of the center-dismantling water turbine rotating shaft according to claim 1, wherein: and the periphery of the outer side of the conical base is provided with water stop rubber.
3. The center hole plugging device of the center-dismantling water turbine rotating shaft according to claim 1, wherein: the supporting telescopic mechanism comprises a guide cylinder, a support rod and an elastic component, the guide cylinder is vertically fixed on the lower bottom surface of the top plate, the elastic component is sleeved in the guide cylinder, the upper end of the elastic component is fixed in the guide cylinder or on the bottom surface of the top plate, the support rod is sleeved in the guide cylinder and is fixedly connected with the lower end of the elastic component, and the lower end of the support rod is fixed on the top seat.
4. The center hole plugging device of the center-dismantling water turbine rotating shaft according to claim 1, wherein: the top surface of the top plate and the outer side surface of the blocking sleeve are provided with sealing grooves, and sealing rings are sleeved in the sealing grooves.
5. The center hole plugging device of the center-dismantling water turbine rotating shaft according to claim 1, wherein: the base is provided with a mounting lifting ring.
6. The center hole plugging device of the center-dismantling water turbine rotating shaft according to claim 1, wherein: the hydraulic turbine shaft and the cavity of the intermediate shaft are internally provided with a blocking block, the blocking block is in a circular truncated cone shape, the upper part of the blocking block is fixedly provided with a pressing plate, the pressing plate is attached to the lower end of the intermediate shaft, and the lower end of the blocking block is sleeved in a middle hole of the hydraulic turbine rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781644.7U CN210239898U (en) | 2019-05-28 | 2019-05-28 | Middle hole plugging device for rotating shaft of middle-dismantling type water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781644.7U CN210239898U (en) | 2019-05-28 | 2019-05-28 | Middle hole plugging device for rotating shaft of middle-dismantling type water turbine |
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| Publication Number | Publication Date |
|---|---|
| CN210239898U true CN210239898U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920781644.7U Active CN210239898U (en) | 2019-05-28 | 2019-05-28 | Middle hole plugging device for rotating shaft of middle-dismantling type water turbine |
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| CN (1) | CN210239898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864098A (en) * | 2021-08-26 | 2021-12-31 | 长江勘测规划设计研究有限责任公司 | Method for dismounting and dismounting in and from rotating wheel of vertical shaft two-stage mixed flow unit for inspection and repair |
-
2019
- 2019-05-28 CN CN201920781644.7U patent/CN210239898U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864098A (en) * | 2021-08-26 | 2021-12-31 | 长江勘测规划设计研究有限责任公司 | Method for dismounting and dismounting in and from rotating wheel of vertical shaft two-stage mixed flow unit for inspection and repair |
| CN113864098B (en) * | 2021-08-26 | 2023-12-19 | 长江勘测规划设计研究有限责任公司 | Method for middle disassembly and lower disassembly, inspection and repair of rotating wheel of vertical shaft two-stage mixed flow unit |
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