CN220265092U

CN220265092U - Thrust tile foundation ring jacking device of large-scale hydroelectric generating set

Info

Publication number: CN220265092U
Application number: CN202321069318.6U
Authority: CN
Inventors: 陈少华; 李俊; 陈成; 朱俊杰; 黄昌华
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-12-29
Anticipated expiration: 2033-05-06

Abstract

The utility model provides a large-scale hydroelectric set thrust tile foundation ring jacking device, includes jacking cylinder and hydraulic power unit, and the jacking cylinder is equipped with a plurality ofly, and a plurality of jacking cylinders are used for encircling and install between thrust tile foundation ring and the unit foundation, and the jacking cylinder is connected with hydraulic power unit through hydraulic pipeline respectively, and the top of jacking cylinder is equipped with and is used for supporting thrust tile foundation ring pivoted rolling device. Through the structure, the thrust tiles installed in other directions can be rotated to the deducing oil groove window, and replacement or inspection of the whole set of thrust tiles is realized.

Description

Thrust tile foundation ring jacking device of large-scale hydroelectric generating set

Technical Field

The utility model relates to the technical field of maintenance of hydraulic generators, in particular to a thrust tile foundation ring jacking device of a large hydraulic generator set.

Background

The thrust bearing bears the weight of the rotating part of the whole unit and axial water thrust during operation, which is called the heart of the hydroelectric generating set, and is related to the operation stability of the whole unit. When the maintenance requirement of the thrust bearing of the unit appears, the maintenance task is rapidly and efficiently implemented, which is particularly important.

The deducing oil groove of a certain unit is positioned in the center body of the lower frame, the center body is provided with three windows, the thrust tiles are uniformly distributed in the deducing oil groove, 28 blocks are arranged in total, each window is opposite to one thrust tile, and the structural form leads to the fact that the thrust tiles are subjected to tile drawing inspection or replacement under the condition that a rotor is not lifted, and the inspection platform can only be erected through a fast-assembling scaffold, and an unpowered roller way is placed on the platform to inspect or replace the thrust tiles opposite to the windows.

If the thrust tiles are replaced or inspected in a rotor hoisting mode, the maintenance period is too long, and the maintenance cost is high, especially in the flood season; if the rotor is not lifted, the original mode and the tooling can only implement the maintenance or replacement of the thrust shoe with the installation position in the oil groove deducing window. Under the condition, a set of thrust tile foundation ring jacking device tightly combining the field environment and the structural characteristics of equipment is designed, the thrust tiles at other positions are transferred to the oil groove deducing window, and the replacement or inspection of the whole set of thrust tiles is particularly urgent.

Disclosure of Invention

The utility model aims to solve the technical problems that: the problem existing in the background technology is solved, and the thrust tile foundation ring jacking device of the large-scale hydroelectric generating set is provided, so that the thrust tiles installed in other directions can be rotated to the deducing oil groove window, and the replacement or inspection of the whole set of thrust tiles is realized.

In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the utility model provides a large-scale hydroelectric set thrust tile foundation ring jacking device, includes jacking cylinder and hydraulic power unit, the jacking cylinder is equipped with a plurality ofly, and a plurality of jacking cylinders are used for encircling and install between thrust tile foundation ring and the unit foundation, and the jacking cylinder is connected with hydraulic power unit through hydraulic pipeline respectively, the top of jacking cylinder is equipped with and is used for supporting thrust tile foundation ring pivoted rolling device.

The rolling device is one or more balls arranged at the top of the piston rod of the jacking cylinder, and the balls can roll freely in the groove at the top end of the piston rod of the jacking cylinder.

The rolling device is a supporting roller arranged at the top of a piston rod of the jacking cylinder, the supporting roller comprises a U-shaped bracket, a rotating wheel and a pin shaft, the U-shaped bracket is fixedly arranged at the top of the piston rod of the jacking cylinder, and the rotating wheel is rotatably arranged in the U-shaped bracket through the pin shaft.

The jacking cylinder is arranged on the fixing frame, the fixing frame comprises a bottom plate, inclined struts and a limiting ring, the limiting ring is fixedly supported above the bottom plate through the inclined struts, the lower end of a cylinder body of the jacking cylinder abuts against the bottom plate, and the limiting ring is sleeved at the upper end of the cylinder body.

The jacking cylinder is a single-acting hydraulic cylinder.

The utility model has the following beneficial effects:

1. the jacking cylinder is arranged between the thrust tile foundation ring and the unit foundation in a surrounding mode to jack the thrust tile foundation ring, the rolling device at the top of the jacking cylinder supports the thrust tile foundation ring and can enable the thrust tile foundation ring to rotate on the jacking cylinder, hydraulic oil with pressure is provided for the jacking cylinder through the hydraulic pump station, so that a piston rod of the jacking cylinder is driven to extend, and the thrust tile foundation ring can be stably jacked. Through the structure, the thrust tiles installed in other directions can be rotated to the deducing oil groove window, and replacement or inspection of the whole set of thrust tiles is realized.

2. The jacking cylinder is arranged on the fixing frame, so that the jacking cylinder can be conveniently placed and arranged.

Drawings

Fig. 1 is a schematic front view of the present utility model in a use state.

Fig. 2 is a schematic perspective view of the present utility model in a use state.

Fig. 3 is a schematic structural view of a first embodiment of a jacking cylinder according to the present utility model.

Fig. 4 is a schematic structural view of a second embodiment of a jacking cylinder according to the present utility model.

In the figure: the hydraulic unit comprises a unit foundation 1, a thrust tile foundation ring 2, a jacking cylinder 3, a thrust tile 4, a hydraulic pump station 5, a hydraulic pipeline 51, a fixing frame 6, a bottom plate 61, inclined struts 62, a limiting ring 63, balls 7, supporting rollers 8, a U-shaped bracket 81, a rotating wheel 82 and a pin shaft 83.

Detailed Description

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1-4, a large-scale hydroelectric generating set thrust tile foundation ring jacking device comprises a plurality of jacking cylinders 3 and a hydraulic pump station 5, wherein the jacking cylinders 3 are arranged in a plurality, the jacking cylinders 3 are circumferentially arranged between a thrust tile foundation ring 2 and a set foundation 1, the jacking cylinders 3 are respectively connected with the hydraulic pump station 5 through hydraulic pipelines 51, and rolling devices for supporting the thrust tile foundation ring 2 to rotate are arranged at the tops of the jacking cylinders 3. The jacking cylinder 3 is arranged between the thrust tile foundation ring 2 and the unit foundation 1 in a surrounding mode to jack the thrust tile foundation ring 2, a rolling device at the top of the jacking cylinder 3 supports the thrust tile foundation ring 2 and can enable the thrust tile foundation ring 2 to rotate on the jacking cylinder 3, hydraulic oil with pressure is provided for the jacking cylinder 3 through the hydraulic pump station 5, so that a piston rod of the jacking cylinder 3 is driven to extend, and the thrust tile foundation ring 2 can be stably jacked. Through the structure, the thrust tiles 4 installed in other directions can be rotated to the deducing oil groove window, and replacement or inspection of the whole set of thrust tiles 4 is realized.

The hydraulic pump station 5 is in the prior art, and the hydraulic pump station 5 generally comprises an oil tank, an electric oil pump, an electromagnetic reversing valve or a manual reversing valve and a valve block. In this application, since a plurality of hydraulic pipes 51 need to be connected, the number of oil outlets on the valve block corresponds to the number of hydraulic pipes 51, one end of each hydraulic pipe 51 is connected to the jacking cylinder 3, and the other end is connected to the valve block.

In a first embodiment, see fig. 3, the rolling means are one or more balls 7 mounted on top of the piston rod of the jacking cylinder 3, the balls 7 being free to roll in grooves in the top end of the piston rod of the jacking cylinder 3. Specifically, the ball 7 may be mounted by the tip roller disclosed in CN101195465 a.

In another embodiment, referring to fig. 4, the rolling device is a supporting roller 8 mounted on the top of the piston rod of the jacking cylinder 3, the supporting roller 8 comprises a U-shaped bracket 81, a rotating wheel 82 and a pin 83, the U-shaped bracket 81 is fixedly mounted on the top of the piston rod of the jacking cylinder 3, and the rotating wheel 82 is rotatably mounted in the U-shaped bracket 81 through the pin 83.

In order to facilitate the convenient placement and installation of the jacking cylinder 3, referring to fig. 3, the jacking cylinder 3 is mounted on a fixed frame 6. Specifically, the fixing frame 6 includes a bottom plate 61, inclined struts 62 and a limiting ring 63, the limiting ring 63 is fixedly supported above the bottom plate 61 through a plurality of inclined struts 62, the lower end of the cylinder body of the jacking cylinder 3 abuts against the bottom plate 61, and the limiting ring 63 is sleeved at the upper end of the cylinder body. The lifting oil cylinder 3 is arranged through the framework 6, so that the stability of the lifting oil cylinder 3 is better.

In a preferred embodiment, the jacking cylinder 3 is a single-acting hydraulic cylinder. The structure is simple, each jacking cylinder 3 only needs to be connected with one cylinder, and the installation is convenient.

The working process or principle of the utility model:

when the hydraulic pump station is used, a plurality of jacking cylinders 3 are uniformly placed on the unit foundation 1, a rolling device at the upper end of each jacking cylinder 3 is positioned at the bottom of the thrust tile foundation ring 2, and each jacking cylinder 3 is connected with a valve block connected with the hydraulic pump station 5 through a hydraulic pipeline 51. And starting the hydraulic pump station 5, and enabling a piston rod of the jacking oil cylinder 3 to extend upwards to jack the thrust tile foundation ring 2, and rotating the thrust tiles 4 arranged in other directions to a deducing oil groove window to realize replacement or inspection of the whole set of thrust tiles 4.

Claims

1. The utility model provides a large-scale hydroelectric set thrust tile basic ring jacking device which characterized in that: the hydraulic lifting device comprises a plurality of lifting cylinders (3) and a hydraulic pump station (5), wherein the lifting cylinders (3) are arranged, the lifting cylinders (3) are arranged between a thrust tile foundation ring (2) and a unit foundation (1) in a surrounding mode, the lifting cylinders (3) are connected with the hydraulic pump station (5) through hydraulic pipelines (51) respectively, and rolling devices used for supporting the thrust tile foundation ring (2) to rotate are arranged at the tops of the lifting cylinders (3).

2. The thrust tile foundation ring jacking device of a large-scale hydroelectric generating set according to claim 1, wherein the thrust tile foundation ring jacking device comprises: the rolling device is one or more balls (7) arranged at the top of a piston rod of the jacking cylinder (3), and the balls (7) can roll freely in a groove at the top end of the piston rod of the jacking cylinder (3).

3. The thrust tile foundation ring jacking device of a large-scale hydroelectric generating set according to claim 1, wherein the thrust tile foundation ring jacking device comprises: the rolling device is a supporting roller (8) arranged at the top of a piston rod of the jacking cylinder (3), the supporting roller (8) comprises a U-shaped bracket (81), a rotating wheel (82) and a pin shaft (83), the U-shaped bracket (81) is fixedly arranged at the top of the piston rod of the jacking cylinder (3), and the rotating wheel (82) is rotatably arranged in the U-shaped bracket (81) through the pin shaft (83).

4. The thrust tile foundation ring jacking device of a large-scale hydroelectric generating set according to claim 1, wherein the thrust tile foundation ring jacking device comprises: the jacking cylinder (3) is arranged on the fixing frame (6), the fixing frame (6) comprises a bottom plate (61), inclined struts (62) and limiting rings (63), the limiting rings (63) are fixedly supported above the bottom plate (61) through the inclined struts (62), the lower end of a cylinder body of the jacking cylinder (3) is propped against the bottom plate (61), and the limiting rings (63) are sleeved at the upper end of the cylinder body.

5. The thrust tile foundation ring jacking device of a large-scale hydroelectric generating set according to any one of claims 1 to 4, wherein: the jacking cylinder (3) is a single-acting hydraulic cylinder.