Supporting device for disassembly and assembly of large shaft operation oil pipe of movable propeller turbine

Abstract

The utility model belongs to the technical field of maintenance equipment of hydropower stations, and discloses an axial flow Kaplan turbine large shaft operation oil pipe disassembly and assembly supporting device which comprises two symmetrically-arranged semicircular sleeves, and the tops of the semicircular sleeves extend inwards and are perpendicularly provided with arc-shaped connecting plates matched with the semicircular sleeves. A plurality of mounting holes are formed in each arc-shaped connecting plate, connecting seats are arranged on the side walls of the two ends of each semicircular sleeve, connecting holes are formed in the connecting seats, and the two semicircular sleeves are detachably and fixedly connected through the connecting holes and bolts. Compared with the prior art, the utility model has the beneficial effects that the maintenance efficiency is effectively improved, and the personnel danger in the maintenance process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance equipment for hydropower stations, in particular to a disassembly and assembly support device for a main shaft operating oil pipe of an axial-flow propeller-type water turbine. Background Art

[0002] In the past maintenance of axial-flow propeller units, the operating oil pipe needed to be disassembled and the bottom flange of the operating oil pipe needed to be supported with a triangular plate. Specifically, the flanges of the turbine main shaft and the runner were first disassembled and pulled out a certain distance. Then the operator drilled into the gap between the runner and the main shaft, removed the operating oil pipe connecting bolts, used the jacking screw (M36*120) to lift the operating oil pipe, and lifted three support plates weighing about 20 pounds. They were evenly distributed in a circular direction between the main shaft and the operating oil pipe flange and fixed with bolts, and then the main shaft and the operating oil pipe were lifted at the same time.

[0003] This operation mode has the following problems:

[0004] 1. Maintenance personnel need to enter a narrow space to install the triangular plate support. At this time, the turbine shaft and the operating oil pipe are in a suspended state and are located directly above the maintenance personnel. The total weight of the turbine shaft and the operating oil pipe is about 80 tons, and the risk of lifting injury and object impact is extremely high;

[0005] 2. The three triangular plates used for support weigh about 10kg, and two maintenance personnel are required to assist at the same time to complete the upward installation, which results in low maintenance efficiency. Utility Model Content

[0006] In order to solve the deficiencies of the prior art, the utility model provides a disassembly and assembly support device for operating an oil pipe of an axial-flow propeller-type water turbine main shaft, which effectively improves the maintenance efficiency and reduces the risk to personnel during the maintenance process.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A disassembly and assembly support device for operating an oil pipe of an axial-flow propeller turbine main shaft comprises two symmetrically arranged semicircular sleeves, an arc-shaped connecting plate adapted to the semicircular sleeve extending inwardly from the top of the semicircular sleeve and arranged vertically thereon, a plurality of mounting holes being arranged on the arc-shaped connecting plate, connecting seats being arranged on the side walls at both ends of the semicircular sleeve, connecting holes being arranged on the connecting seats, and the two semicircular sleeves being detachably fixedly connected via the connecting holes and bolts.

[0009] The bottom of the semicircular sleeve extends outward and is vertically provided with an arc-shaped plate adapted thereto.

[0010] The semicircular sleeve and the arc-shaped connecting plate are integrally formed.

[0011] The semicircular sleeve and the arc-shaped plate are integrally formed.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By using this supporting device, the supporting tool is installed under the upper flange of the operating oil pipe. After removing the flange bolts connecting the turbine shaft and the runner, the bridge crane is used to lift the turbine shaft upward until the supporting device contacts the main shaft. At this time, the operating oil pipe is supported by the turbine shaft through the supporting device. The maintenance personnel only need to enter the space between the turbine shaft and the runner to quickly remove the connecting bolts of the lower flange of the operating oil pipe, and then lift the turbine shaft and the operating oil pipe together, which effectively improves the maintenance efficiency and reduces the danger to personnel during the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Attached Figure 2 This is a schematic diagram of the structure of the support device of the utility model.

[0016] The numbers shown in the accompanying drawings are: 1, semicircular sleeve; 2, arc-shaped connecting plate; 3, mounting hole 4, connecting seat; 5, arc-shaped plate. DETAILED DESCRIPTION

[0017] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0018] like Figure 1 As shown, a disassembly and assembly support device for the main shaft operating oil pipe of an axial-flow propeller turbine is disclosed, comprising two symmetrically arranged semicircular sleeves 1, the top of the semicircular sleeve 1 extending inwardly and vertically arranged with an arc-shaped connecting plate 2 adapted thereto, a plurality of mounting holes 3 being arranged on the arc-shaped connecting plate 2, connecting seats 4 being arranged on the side walls at both ends of the semicircular sleeve 1, connecting holes being arranged on the connecting seats 4, and the two semicircular sleeves 1 being detachably fixedly connected via the connecting holes and bolts.

[0019] The bottom of the semicircular sleeve 1 extends outward and vertically sets an arc plate 5 adapted thereto. The arc plate 5 contacts the main shaft support flange below, so that the operating oil pipe and the supporting tooling have support points, thereby ensuring that the operating oil pipe can be hung on the upper end of the main shaft.

[0020] In order to improve the firmness of the device, the semicircular sleeve 1 and the arc-shaped connecting plate 2 are integrally formed, and the semicircular sleeve 1 and the arc-shaped plate 5 are integrally formed.

[0021] The method used in this work is as follows:

[0022] like Figure 2 As shown, two symmetrically arranged semicircular sleeves 1 are installed under the upper flange of the operating oil pipe, and then the two semicircular sleeves 1 are fixedly connected through connecting holes and bolts; pin bolts are installed in the mounting holes 3 for combined fixing. After the runner hoist is installed, the device is located at the central through hole position of the connecting flange of the main shaft and the rotor lifting tool; after removing the bolts of the connecting flange between the turbine shaft and the runner, the bridge crane is ordered to lift the turbine shaft upward until the supporting device contacts the main shaft. At this time, the operating oil pipe is supported by the turbine shaft through the supporting device. The maintenance personnel only need to enter the space between the turbine shaft and the runner to quickly remove the connecting bolts of the lower flange of the operating oil pipe, and then lift the turbine shaft and the operating oil pipe together.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A disassembly and assembly support device for the main shaft operating oil pipe of an axial-flow propeller turbine, characterized in that: The invention comprises two symmetrically arranged semicircular sleeves (1), wherein an arc-shaped connecting plate (2) adapted to the semicircular sleeve (1) is vertically arranged inwardly extending from the top of the semicircular sleeve (1), a plurality of mounting holes (3) are arranged on the arc-shaped connecting plate (2), connecting seats (4) are arranged on the side walls at both ends of the semicircular sleeve (1), and connecting holes are arranged on the connecting seats (4), and the two semicircular sleeves (1) are detachably fixedly connected via the connecting holes and bolts.

2. The axial flow propeller turbine main shaft operating oil pipe disassembly and assembly support device according to claim 1, characterized in that: The bottom of the semicircular sleeve (1) extends outwards and is vertically provided with an arc-shaped plate (5) adapted thereto.

3. The axial flow propeller turbine main shaft operating oil pipe disassembly and assembly support device according to claim 1, characterized in that: The semicircular sleeve (1) and the arc-shaped connecting plate (2) are integrally formed.

4. The axial flow propeller turbine main shaft operating oil pipe disassembly and assembly support device according to claim 1, characterized in that: The semicircular sleeve (1) and the arc-shaped plate (5) are integrally formed.

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