CN215589063U

CN215589063U - Mounting tool for main shaft sealing spring device of hydroelectric generating set

Info

Publication number: CN215589063U
Application number: CN202121051710.9U
Authority: CN
Inventors: 宋欧阳; 朱光烁; 郑修全; 王永业; 刘杰
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-01-21
Anticipated expiration: 2031-05-17

Abstract

A mounting tool for a main shaft sealing spring device of a hydroelectric generating set comprises a supporting rod and a mounting rod, wherein the supporting rod and the mounting rod are in threaded connection; the top of the supporting rod is provided with a top plate, the bottom of the mounting rod is provided with a sleeve, and the sleeve is matched with a nut of the spring device; the supporting rod and the mounting rod are provided with notches for matching with a wrench. The self-compensating shaft end static sealing spring device is suitable for mounting a self-compensating shaft end static sealing spring device of a hydroelectric generating set, the mounting efficiency is improved, the potential safety hazard is reduced, and the personnel safety is guaranteed.

Description

Mounting tool for main shaft sealing spring device of hydroelectric generating set

Technical Field

The utility model belongs to the field of auxiliary mounting equipment for a main shaft sealing spring device of a water turbine generator set, and particularly relates to a mounting tool for the main shaft sealing spring device of the water turbine generator set.

Background

The sealing structure of the main shaft of a certain hydropower station is a self-compensation type shaft end static seal. After the main shaft sealing floating ring and the upper cover are installed, a spring device for controlling the floating amount of the working sealing floating ring needs to be installed. Because the elasticity of the spring is large, the plug for fixing the spring cannot be directly installed, a screw jack and an iron plate are needed to be used for installation, one end of the screw jack is supported on the bottom surface of the water oil guide basin, and the other end of the screw jack compresses the spring through the iron plate (see fig. 7-8). In the process, two persons are matched, one person shakes the screw jack to compress the spring downwards, and the wrench is used by one person to install the plug. Meanwhile, the stress direction of the jack needs to be adjusted in the spring compression process, if the iron plate is stressed eccentrically, the jack falls down to hurt people, and the jack is heavy and consumes much physical power to people. The unit has 24 spring devices, and the method is time-consuming, labor-consuming and high in risk. In order to improve the working efficiency and reduce the safety risk, a mounting tool for a main shaft sealing spring device is urgently needed to be designed.

Disclosure of Invention

In view of the technical problems in the background art, the mounting tool for the main shaft sealing spring device of the water turbine generator set is suitable for mounting the self-compensation type shaft end static sealing spring device of the water turbine generator set, improves the mounting efficiency, reduces potential safety hazards and guarantees the safety of personnel.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

a mounting tool for a main shaft sealing spring device of a hydroelectric generating set comprises a supporting rod and a mounting rod, wherein the supporting rod and the mounting rod are in threaded connection; the top of the supporting rod is provided with a top plate, the bottom of the mounting rod is provided with a sleeve, and the sleeve is matched with a nut of the spring device; the supporting rod and the mounting rod are provided with notches for matching with a wrench.

In the preferred scheme, the supporting rod is a hollow rod, one end of the hollow rod is provided with internal threads, the other end of the hollow rod is connected with a top plate, and the top plate is used for being in contact with the bottom surface of the water and oil guide basin; installation pole one end is equipped with the external screw thread, external screw thread and internal thread looks adaptation, the installation pole other end and sleeve welded fastening.

In a preferred scheme, the sleeve is provided with an inner hexagonal groove.

In a preferred scheme, the wrench matching notch on the supporting rod is used for being matched with the positioning frame.

In a preferred scheme, the positioning frame comprises a square clamping groove, and the square clamping groove is used for being clamped on a notch for matching a wrench; the square clamping groove is connected with the supporting frame.

In the preferred scheme, the support frame comprises two V-shaped frames which are arranged in parallel, the two V-shaped frames are connected through a cross arm, each V-shaped frame comprises a first plate and a second plate, the first plate is used for being in surface contact with the upper surface of the floating ring, and the second plate is used for being connected with the square clamping groove.

This patent can reach following beneficial effect:

1. avoiding the use of heavy objects such as screw jacks and the like, ensuring the safety of operating personnel and reducing potential safety hazards.

2. The maintenance efficiency is improved, and the labor and the time are saved. The traditional method needs 2 persons to operate simultaneously, and only 1 person is needed to operate after the tool is used; the traditional installation method requires 1-1.5 days, and only 0.5 days after the tool is used.

3. The method has higher economy and popularization, shortens the overhaul period, namely increases the unit commissioning time and is beneficial to high-efficiency and high-volume power generation to a certain extent; meanwhile, the tool can be popularized and used for installation and maintenance of spring devices with the same main shaft sealing structure of other models of units.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a three-dimensional block diagram of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a diagram illustrating the effect of the present invention;

FIG. 4 is a diagram illustrating the effect of the positioning frame of the present invention;

FIG. 5 is a three-dimensional structure of the positioning frame of the present invention;

FIG. 6 is a front view of the spacer of the present invention;

FIG. 7 is a diagram illustrating the effect of a screw jack used in conjunction with an iron plate in the prior art;

fig. 8 is a structural view of a conventional spring device.

In the figure: the device comprises a spring device 1, a screw jack 2, an iron plate 3, a water oil guide basin bottom surface 4, a support rod 5, a mounting rod 6, a top plate 7, a sleeve 8, a notch 9 for matching with a wrench, a positioning frame 10, a square clamping groove 10.1, a V-shaped frame 10.2 and a floating ring 11.

Detailed Description

The preferable scheme is as shown in fig. 1 to fig. 2, the mounting tool for the main shaft sealing spring device of the hydroelectric generating set comprises a supporting rod 5 and a mounting rod 6, wherein the supporting rod 5 is in threaded connection with the mounting rod 6; the top of the support rod 5 is provided with a top plate 7, the bottom of the mounting rod 6 is provided with a sleeve 8, and the sleeve 8 is used for being matched with a nut of the spring device 1; the supporting rod 5 and the mounting rod 6 are both provided with notches 9 for matching with a wrench.

As shown in fig. 8, the spring device 1 includes a nut, a sealing post is connected to the bottom of the nut, a positioning post is connected to the bottom of the sealing post, and a spring is sleeved outside the positioning post. As shown in fig. 7, when the spring device 1 is installed by using the screw jack 2 and the iron plate 3, the screw jack 2 and the iron plate 3 both need to be manually supported, and one worker rotates the nut of the spring device 1 with a wrench while another worker needs to adjust the screw jack 2 to apply downward pressure to the spring device 1, so that the spring device 1 is inserted into the hole of the floating ring 11.

When adopting this instrument, only need cup joint sleeve 8 on spring assembly 1's nut, adjust bracing piece 5 and installation pole 6 total length, make roof 7 and water lead oil pan bottom surface 4 contacts, then adopt two spanner joints on notch 9 is used in the spanner cooperation to rotate installation pole 6, make installation pole 6 downstream. In this way, the spring device 1 can be pressed downwards and can be rotated, so that the sealing column of the spring device 1 can be pressed downwards quickly.

Furthermore, the supporting rod 5 is a hollow rod, one end of the hollow rod is provided with internal threads, the other end of the hollow rod is connected with a top plate 7, and the top plate 7 is used for being in contact with the bottom surface 4 of the water-oil guiding basin; 6 one end of installation pole is equipped with the external screw thread, external screw thread and internal thread looks adaptation, the 6 other end of installation pole and 8 welded fastening of sleeve. The sleeve 8 is provided with an internal hexagonal groove.

When adopting two spanners, if when operating with two handheld spanners alone, spanner weight ratio is bigger, and the easy rapid consumption staff's of long-time work physical power, consequently for making the staff only adopted a spanner to operate, designed the structure of locating rack 10, specifically as follows:

as shown in fig. 4-6, the wrench-engaging notch 9 of the support rod 5 is adapted to fit the retainer 10. The positioning frame 10 comprises a square clamping groove 10.1, and the square clamping groove 10.1 is used for being clamped on the notch 9 for matching the wrench; the square clamping groove 10.1 is connected with the supporting frame. The support frame includes two parallel arrangement V-arrangement framves 10.2, connects through the cross arm between two V-arrangement framves 10.2, and V-arrangement frame 10.2 includes first board and second board, and first board is used for with 11 upper surface contact of floating ring, and the second board is used for square clamping groove 10.1 to connect.

The locating rack 10 is used for fixing the position of the supporting rod 5 and preventing the supporting rod 5 from rotating, and the locating rack 10 acts like a spanner, but has the advantages that: before installation, the position of the positioning frame 10 is only required to be placed, the square clamping groove 10.1 is inserted into the notch 9 for matching the wrench, the positioning frame is held by one hand, and then the wrench can be rotated by the other hand to rotate the installation rod 6.

The working principle is as follows:

the tool is simple in structure and comprises a supporting rod and an installation rod. When the spring device is installed, the supporting rod and the installation rod are connected through self threads. The supporting rod is propped against the bottom surface of the water and oil guide basin, and the mounting rod sleeve is arranged on the spring plug (namely the screw cap). The support rod is fixed by a wrench, and the spring is compressed by rotating the mounting rod downward. After the installation of the plug is completed, the installation rod is fixed, and the tool is taken down by rotating the support rod downwards.

The tool is portable, and the risk that a person is injured by heavy objects such as a screw jack, an iron plate and the like is avoided; the tool has a simple structure, installation operators are reduced, the spring device installation work is changed from two persons cooperating to single person independent work, and labor is saved; the rod pieces are connected through threads, so that force transmission is stable.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a hydroelectric set main shaft seal spring device mounting tool which characterized in that: the device comprises a supporting rod (5) and a mounting rod (6), wherein the supporting rod (5) is in threaded connection with the mounting rod (6); a top plate (7) is arranged at the top of the supporting rod (5), a sleeve (8) is arranged at the bottom of the mounting rod (6), and the sleeve (8) is used for being matched with a screw cap of the spring device (1); the supporting rod (5) and the mounting rod (6) are provided with notches (9) for matching with a wrench.

2. The hydroelectric generating set main shaft seal spring device mounting tool of claim 1, characterized in that: the supporting rod (5) is a hollow rod, one end of the hollow rod is provided with internal threads, the other end of the hollow rod is connected with a top plate (7), and the top plate (7) is used for being in contact with the bottom surface (4) of the water and oil guide basin; installation pole (6) one end is equipped with the external screw thread, external screw thread and internal thread looks adaptation, installation pole (6) other end and sleeve (8) welded fastening.

3. The hydroelectric generating set main shaft seal spring device mounting tool of claim 1, characterized in that: the sleeve (8) is provided with an inner hexagonal groove.

4. The hydroelectric generating set main shaft seal spring device mounting tool of claim 1, characterized in that: the wrench matching notch (9) on the supporting rod (5) is used for being matched with the positioning frame (10).

5. The hydroelectric generating set main shaft seal spring device mounting tool of claim 4, characterized in that: the positioning frame (10) comprises a square clamping groove (10.1), and the square clamping groove (10.1) is used for being clamped on the notch (9) for matching the wrench; the square clamping groove (10.1) is connected with the supporting frame.

6. The hydroelectric generating set main shaft seal spring device mounting tool of claim 5, characterized in that: the support frame includes two parallel arrangement V-arrangement framves (10.2), connects through the cross arm between two V-arrangement framves (10.2), and V-arrangement frame (10.2) include first board and second board, and first board is used for and floats ring (11) upper surface contact, and the second board is used for square clamping groove (10.1) to be connected.