CN218285309U

CN218285309U - Axial-flow propeller type runner upper and lower cavity oil drain valve dismounting tool

Info

Publication number: CN218285309U
Application number: CN202222207917.1U
Authority: CN
Inventors: 何强锋; 吴江; 覃创吉; 陶建旭
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-13
Anticipated expiration: 2032-08-22

Abstract

The tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller type rotating wheel comprises a positioning shaft, a knocking body and a fixing nut, wherein the positioning shaft comprises a shaft body, two ends of the shaft body are respectively provided with a first thread and a second thread, the first thread is matched and screwed with the fixing nut, and the second thread is matched and screwed with the oil drain valve to be disassembled and assembled; the knocking body comprises a knocking part, one side of the knocking part is provided with an annular flange, one side of the annular flange, which is far away from the knocking part, is radially provided with a boss, the center of the knocking body is provided with a positioning hole, and the positioning hole penetrates through the knocking part, the annular flange and the boss; under the user state, the knocking body is movably sleeved on the shaft body of the positioning shaft through the positioning hole, and the fixing nut is installed on the first thread. Through above-mentioned structure, cavity of resorption oil extraction valve can harmless dismantlement and effective fastening on the runner to the oil leak risk has been avoided.

Description

Axial-flow propeller type runner upper and lower cavity oil drain valve dismounting tool

Technical Field

The utility model relates to a hydraulic turbine maintains technical field, especially relates to a chamber oil drain valve dismouting frock about axial compressor circulation oar formula runner.

Background

The axial flow rotary paddle type rotating wheel belongs to the working part of a water turbine and plays a role in converting the energy of water flow into rotary mechanical energy. The axial-flow propeller type rotating wheel is filled with turbine oil with certain pressure, plays a role in adjusting the opening of the blades and lubricating an internal operating mechanism, and needs to discharge the turbine oil in the rotating wheel body in the maintenance process.

Therefore, a special oil discharge valve is provided on the axial flow paddle type runner to perform oil discharge work of turbine oil inside the runner body. In the maintenance process of the axial-flow propeller type rotating wheel, the oil drain valves of the upper cavity and the lower cavity of the piston need to be disassembled and assembled. In order to facilitate the disassembly and assembly, the upper cavity and the lower cavity of the oil drain valve are designed with a straight notch. On-site maintenance generally carries out the dismouting according to the size of a word notch, self-control simple and easy instrument, but self-control simple and easy frock can not fasten the oil drain valve completely in place or can't harm the dismantlement, leads to the oil drain valve not effectively to fasten or damage, has the oil leak risk.

For avoiding the oil leak risk, this special frock does not have temporarily in the industry simultaneously, consequently need study preparation a special frock of chamber oil drain valve dismouting about the axis of rotation oar formula runner, guarantee runner upper and lower chamber oil drain valve can harmless dismantlement and effective fastening, prevent the oil leak.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: solve the problem that exists among the above-mentioned background art, provide an upper and lower chamber oil drain valve dismouting frock of axial compressor impeller formula runner, through this frock, upper and lower chamber oil drain valve can harmless dismantlement and effective fastening about the runner, avoids the oil leak risk.

In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller type rotating wheel comprises a positioning shaft, a knocking body and a fixing nut, wherein the positioning shaft comprises a shaft body, two ends of the shaft body are respectively provided with a first thread and a second thread, the first thread is matched and screwed with the fixing nut, and the second thread is matched and screwed with the oil drain valve to be disassembled and assembled; the knocking body comprises a knocking part, one side of the knocking part is provided with an annular flange, one side of the annular flange, which is far away from the knocking part, is radially provided with a boss, the center of the knocking body is provided with a positioning hole, and the positioning hole penetrates through the knocking part, the annular flange and the boss; under the user state, the knocking body is movably sleeved on the shaft body of the positioning shaft through the positioning hole, and the fixing nut is installed on the first thread.

The positioning shaft is provided with a structure convenient for rotating the positioning shaft at the end part of one side of the first thread.

The structure convenient for rotating the positioning shaft is an inner polygonal blind hole, or an outer polygonal boss, or a threaded blind hole.

The knocking part is of an outer hexagonal structure.

Notches are arranged on two sides of the annular flange.

The utility model discloses there is following beneficial effect:

1. the tool is simple in structure, low in cost, simple in operation, safe and reliable, and capable of achieving nondestructive dismounting and effective fastening of the oil drain valve of the upper cavity and the lower cavity of the runner piston, improving the mounting quality of the oil drain valve, eliminating oil leakage risks and saving the overhaul period.

2. The positioning shaft is provided with a structure which is convenient for rotating the positioning shaft at the end part of one side of the first thread, so that the second thread of the positioning shaft can be conveniently and labor-saving connected with the threaded hole in the inner side of the oil drain valve.

3. The gaps are arranged on two sides of the annular flange, so that the rotation condition of the oil discharge valve can be observed conveniently through the gaps during disassembly and assembly.

4. The tool can be applied to the construction of similar operations in hydropower and related industries, and has good universality and obvious industrial popularization value.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the structure of the present invention.

Fig. 3 is a schematic view of another view structure of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the knocking body of the present invention.

Fig. 5 is a schematic view of the three-dimensional structure of the positioning shaft of the present invention.

In the figure: the positioning shaft 10, the shaft body 11, a first thread 12, a second thread 13 and an inner polygonal blind hole 14;

the knocking body 20, the knocking part 21, the annular flange 22, the boss 23, the positioning hole 24 and the notch 25;

the nut 30 is fixed.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1-5, a tool for disassembling and assembling an oil drain valve of an upper cavity and a lower cavity of an axial flow propeller type rotating wheel comprises a positioning shaft 10, a knocking body 20 and a fixing nut 30, wherein the positioning shaft 10 comprises a shaft body 11, two ends of the shaft body 11 are respectively provided with a first thread 12 and a second thread 13, the first thread 12 is matched and screwed with the fixing nut 30, and the second thread 13 is matched and screwed with an oil drain valve to be disassembled and assembled; the knocking body 20 comprises a knocking part 21, an annular flange 22 is arranged on one side of the knocking part 21, a boss 23 is radially arranged on one side, away from the knocking part 21, of the annular flange 22, a positioning hole 24 is formed in the center of the knocking body 20, and the positioning hole 24 penetrates through the knocking part 21, the annular flange 22 and the boss 23; in a use state, the knocking body 20 is movably sleeved on the shaft body 11 of the positioning shaft 10 through the positioning hole 24, and the fixing nut 30 is installed on the first thread 12. The fixing nut 30 has a hexagonal nut. Through above-mentioned structure, cavity of resorption oil extraction valve can harmless dismantlement and effective fastening on the runner to the oil leak risk has been avoided.

When the oil drain valve is used, one end of the positioning shaft 10, which is positioned at the second thread 13, is arranged in the threaded hole on the inner side of the oil drain valve, the knocking body 20 is sleeved, the boss 23 of the knocking body 20 is matched with the straight groove of the oil drain valve, and finally the fixing nut 30 is arranged on the first thread 12 of the positioning shaft 10, so that the boss 23 is limited in the straight groove of the oil drain valve and cannot be separated from the straight groove of the oil drain valve due to the rotation of the knocking body 20. The striking portion 21 of the striking body 20 is caught by a fixed wrench, and the striking body 20 is rotated by striking the wrench with a tool, thereby rotating the oil discharge valve. The fixing nut 30 is installed on the first thread 12 to prevent the knocking body 20 from being loosened when the wrench is knocked.

In order to conveniently and labor-saving connect the second thread 13 of the positioning shaft 10 with the threaded hole on the inner side of the oil drain valve, the end part of the positioning shaft 10 on one side of the first thread 12 is provided with a structure which is convenient for rotating the positioning shaft 10.

Specifically, the positioning shaft 10 is configured as an inner polygonal blind hole 14, or an outer polygonal boss, or a threaded blind hole. The installation is convenient to rotate through an inner hexagonal wrench or an adjustable wrench or through bolt extension.

Referring to fig. 1-4, the knocking portion 21 has an external hexagonal structure, which is convenient for being connected with a monkey wrench or a fixed wrench to screw the knocking body 20. Of course, the knocking portion 21 may have an outer square or outer pentagonal structure.

Referring to fig. 1-4, the annular flange 22 is provided with notches 25 on both sides thereof to facilitate viewing of the rotation of the drain valve through the notches 25 during assembly and disassembly.

The utility model discloses a working process and principle:

when the oil drain valve is used, one end, located at the second thread 13, of the positioning shaft 10 is installed in a threaded hole in the inner side of the oil drain valve, the knocking body 20 is sleeved in the positioning shaft, the boss 23 of the knocking body 20 is matched with a straight groove of the oil drain valve, and finally the fixing nut 30 is installed on the first thread 12 of the positioning shaft 10, so that the boss 23 is limited in the straight groove of the oil drain valve and cannot be separated from the straight groove of the oil drain valve due to rotation of the knocking body 20. The striking portion 21 of the striking body 20 is caught by a fixed wrench, and the striking body 20 is rotated by striking the wrench with a tool, thereby rotating the oil discharge valve.

Claims

1. The utility model provides an upper and lower chamber oil drain valve dismouting frock of axial flow propeller type runner which characterized in that: the oil drain valve positioning device comprises a positioning shaft (10), a knocking body (20) and a fixing nut (30), wherein the positioning shaft (10) comprises a shaft body (11), a first thread (12) and a second thread (13) are respectively arranged at two ends of the shaft body (11), the first thread (12) is matched and screwed with the fixing nut (30), and the second thread (13) is matched and screwed with an oil drain valve to be disassembled and assembled; the knocking body (20) comprises a knocking part (21), an annular flange (22) is arranged on one side of the knocking part (21), a boss (23) is radially arranged on one side, away from the knocking part (21), of the annular flange (22), a positioning hole (24) is formed in the center of the knocking body (20), and the positioning hole (24) penetrates through the knocking part (21), the annular flange (22) and the boss (23); in a using state, the knocking body (20) is movably sleeved on the shaft body (11) of the positioning shaft (10) through the positioning hole (24), and the fixing nut (30) is installed on the first thread (12).

2. The tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller type rotating wheel according to claim 1, is characterized in that: the end part of the positioning shaft (10) on one side of the first thread (12) is provided with a structure which is convenient for rotating the positioning shaft (10).

3. The tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller-type rotating wheel according to claim 2, is characterized in that: the structure of the positioning shaft (10) convenient to rotate is an inner polygonal blind hole (14), or an outer polygonal boss, or a threaded blind hole.

4. The tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller-type rotating wheel according to claim 1, is characterized in that: the knocking part (21) is of an external hexagonal structure.

5. The tool for disassembling and assembling the oil drain valve of the upper cavity and the lower cavity of the axial flow propeller-type rotating wheel according to claim 1, is characterized in that: notches (25) are arranged on two sides of the annular flange (22).