CN217168394U

CN217168394U - Main shaft sealing floating ring spring compressor of hydropower station

Info

Publication number: CN217168394U
Application number: CN202220677215.7U
Authority: CN
Inventors: 王振宇; 刘洋; 王亮; 张伟道; 张强; 王征; 曾范忠; 刘宇鹏; 李健; 范立军; 陆海军; 李明仁; 刘明; 郑亮; 杜永; 孙鹤
Original assignee: Songhuajiang Hydropower Co ltd Jilin Fengman Power Plant; State Grid Xinyuan Water And Electricity Co ltd; State Grid Corp of China SGCC
Current assignee: Songhuajiang Hydropower Co ltd Jilin Fengman Power Plant; State Grid Xinyuan Water And Electricity Co ltd; State Grid Corp of China SGCC
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-08-12
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a power station main shaft seal floating ring spring compressor, including reaction frame and telescoping device, the reaction frame includes the base, with the support of base rigid coupling, the through-hole that is used for making the spring to pass is offered at the middle part of base, and the telescoping device is installed on the support with the through-hole relatively, the effect portion of telescoping device is configured to perpendicular up-and-down motion to compress the spring in the through-hole when the downstream.

Description

Main shaft sealing floating ring spring compressor of hydropower station

Technical Field

The utility model relates to a power plant maintenance equipment technical field especially relates to a power station main shaft seal floating ring spring compressor.

Background

The floating ring is a sealing device, which prevents water turbine leakage from entering a machine pit along a gap between a main shaft and a fixed component and hindering normal operation of other equipment, so that a leakage-stopping sealing device (called a main shaft seal for short) must be arranged on the main shaft. The floating ring seal is a sealing structure in the main shaft seal, and the sealing structure achieves the sealing effect by utilizing the fact that the floating ring clings to the relative gap between the rotating ring and the fixed ring under the pressure of a sealing medium and forms an extremely thin liquid film on the joint surface. And 32 spring holes are arranged in one circle of the floating ring, and the spring is arranged in the spring hole and then the nut is screwed in, so that the upward movement amount of the floating ring is controlled, the compression amount of each spring is required to be consistent, the floating level of the floating ring is ensured, and the sealing effect is achieved. In the actual operation in-process, because there is not specialized tool, the unable spring hole of packing into perpendicularly of spring when installation, and produce off-centre, unable normal installation, need operate repeatedly the spring impress downthehole, for guaranteeing that the sealed installation of hydraulic turbine floating ring is smooth, so preparation a portable pressure spring ware can realize one-man operation, carries out the compression operation to floating ring spring through equipment, both safety and stability, laborsaving province's manual work, installation and easy operation. Various dangerous factors when the spring is installed are avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power station main shaft seal floating ring spring compressor, its advantage is simple and easy, and the cost of manufacture is low, and the installation is simple, and the security is high, and stability is good, laborsaving, one person advantage that is operable.

The utility model discloses a power station main shaft seal floating ring spring compressor, including reaction frame and telescoping device, the reaction frame includes the base, with the support of base rigid coupling, the through-hole that is used for making the spring to pass is offered at the middle part of base, and the telescoping device is installed on the support with the through-hole relatively, and the effect portion of telescoping device is configured into perpendicular up-and-down motion to compress the spring in the through-hole when the downstream.

Preferably or optionally, the magnetic suspension device further comprises a first magnetic block and a second magnetic block, and the first magnetic block and the second magnetic block are respectively installed on the bases on two sides of the through hole so as to adsorb the bases on the floating ring.

Preferably or optionally, the base comprises a first base plate, a second base plate and a ring-shaped piece, one end of the first base plate is provided with a first bent hook portion bent upwards, one end of the second base plate is provided with a second bent hook portion bent upwards, two ends of the ring-shaped piece are respectively buckled on the first bent hook portion and the second bent hook portion, the through hole is a center hole of the ring-shaped piece, the first magnetic block and the second magnetic block are respectively arranged on the first base plate and the second base plate, the support is n-shaped, and the lower ends of two side walls of the support are respectively fixedly connected with the other ends of the first base plate and the second base plate.

Preferably or optionally, the width of the first magnetic block is greater than that of the first bottom plate, the width of the second magnetic block is greater than that of the second bottom plate, grooves are formed in the bottom surfaces of the first magnetic block and the second magnetic block, the depth of each groove is equal to the thickness of the first bottom plate and the thickness of the second bottom plate, and the first bottom plate and the second bottom plate are inserted into the grooves.

Preferably or alternatively, the telescopic device is a hydraulic jack, and the telescopic device is arranged on the top of the bracket in an inverted mode.

Preferably or optionally, the telescopic device is a hydraulic jack, and the upper end of a telescopic rod of the telescopic device is fixedly connected with the top of the bracket.

The utility model discloses a power station main shaft seal floating ring spring compressor, the advantage that has for prior art is: the structure is simple, the cost of manufacture is low, and the installation is simple, and the security is high, and stability is good, laborsaving, one person advantage that can operate promptly.

Drawings

Fig. 1 is a schematic view of an embodiment of a floating ring spring compressor for a spindle seal of a hydropower station according to the present invention.

Fig. 2 is a schematic view of another embodiment of the floating ring spring compressor for a spindle seal of a hydroelectric power station according to the present invention.

Description of the figures

1. A reaction frame; 11. a base; 111. a first base plate; 1111. a first hook portion; 112. a second base plate; 1121. a second hook portion; 113. an annular member; 12. a support; 2. a telescoping device; 3. a first magnetic block; 4. a second magnetic block; 5. a spring; 6. a stud.

Detailed Description

The utility model discloses a power station main shaft seals floating ring spring compressor is described in further detail below with reference to fig. 1 and 2 of the accompanying drawings.

The utility model discloses a power station main shaft seal floating ring spring compressor please refer to fig. 1 and fig. 2, including reaction frame 1 and telescoping device 2.

The reaction frame 1 comprises a base 11 and a bracket 12 fixedly connected with the base 11, and a through hole for a spring to pass through is formed in the middle of the base 11. The reaction force mode of the reaction frame 1 can be that an adsorption part is arranged on the base 11, and a counterweight part can also be arranged on the base 11, and a person skilled in the art can select the reaction force mode according to actual needs.

The telescopic device 2 is any one of a hydraulic oil cylinder, an air cylinder, an electric cylinder, a hydraulic jack and a mechanical jack, and a person skilled in the art can select the type of the telescopic device 2 according to actual needs.

The telescopic device 2 is mounted on the bracket 12 opposite the through hole, and the acting part of the telescopic device 2 is configured to move vertically up and down to compress the spring in the through hole when the acting part of the telescopic device 2 moves downward.

When the action part of the telescopic device 2 moves downwards to the limit position, the action part of the telescopic device 2 is abutted against the base 11 and closes the through hole of the base 11. Alternatively, when the active part of the telescopic device 2 is moved downwards to the extreme position, the active part of the telescopic device 2 passes through the through hole of the base 11.

When the spring is actually installed and compressed, firstly, the spring 5 is installed in the spring hole of the floating ring, then the stud 6 (the diameter of the stud 6 is smaller than that of the through hole of the base 11) is installed on the top of the spring 5, then the floating ring spring compressor for sealing the main shaft of the hydropower station is placed on the floating ring, the through hole of the base 11 is aligned with the spring hole of the floating ring, then the expansion device 2 is operated to enable the action part of the expansion device 2 to move downwards, the action part of the expansion device 2 presses the stud 6 and the spring 5 downwards until the spring 5 is completely pressed into the spring hole of the floating ring (at the moment, the spring 5 is in a compression state in the spring hole of the floating ring), finally, the stud 6 is manually rotated, the stud 6 is fixed in the spring hole of the floating ring through the internal thread connection of the external thread and the inner wall of the spring hole, thereby realizing simple structure and low manufacturing cost, the installation is simple, and the security is high, and stability is good, laborsaving, one person advantage operable promptly, and size, the up-and-down motion scope of the effect portion of telescoping device 2 can be according to the intensity of spring, volume size actual setting.

The utility model discloses a power station main shaft seal floating ring spring compressor please refer to fig. 1 and fig. 2, can also be on the basis of preceding technical scheme: the magnetic ring is characterized by further comprising a first magnetic block 3 and a second magnetic block 4, wherein the first magnetic block 3 and the second magnetic block 4 are respectively installed on the base 11 on two sides of the through hole so as to enable the base 11 to be adsorbed on the surface of the floating ring. The first magnetic block 3 and the second magnetic block 4 are both permanent magnetic blocks, and the common adsorption force of the first magnetic block 3 and the second magnetic block 4 is larger than the elastic force of the spring. Of course, the first magnetic block 3 and the second magnetic block 4 are not limited to permanent magnets, and may be electromagnetic devices.

The utility model discloses a power station main shaft seal floating ring spring compressor please refer to fig. 1 and fig. 2, can also be on the basis of preceding technical scheme: the base 11 includes a first base plate 111, a second base plate 112, and a ring member 113.

One end of the first base plate 111 is provided with a first hook 1111 bent upward, and one end of the second base plate 112 is provided with a second hook 1121 bent upward.

The ring-shaped member 113 is a metal ring, and two ends of the ring-shaped member 113 are respectively fastened to the first hook portion 1111 and the second hook portion 1121, so that the first base plate 111 and the second base plate 112 are fastened and connected, and the structural strength is improved.

The through hole is a central hole of the annular member 113, the first magnetic block 3 and the second magnetic block 4 are respectively arranged on the first base plate 111 and the second base plate 112, the bracket 12 is n-shaped, and the lower ends of the two side walls of the bracket 12 are respectively fixedly connected with the other ends of the first base plate 111 and the second base plate 112. It is preferable that the first base plate 111, the second base plate 112 and the bracket 12 are integrally formed, which has the effects of high structural strength and convenience in manufacturing.

The utility model discloses a power station main shaft seal floating ring spring compressor please refer to fig. 1 and fig. 2, can also be on the basis of preceding technical scheme: the width of the first magnetic block 3 is greater than that of the first bottom plate 111, the width of the second magnetic block 4 is greater than that of the second bottom plate 112, grooves are formed in the bottom surfaces of the first magnetic block 3 and the second magnetic block 4, the depth of each groove is equal to the thickness of the first bottom plate 111 and the thickness of the second bottom plate 112, and the first bottom plate 111 and the second bottom plate 112 are connected with the grooves in an inserted mode, so that the bottom surfaces of the first magnetic block 3 and the second magnetic block 4 are adsorbed on the surface of the floating ring.

The utility model discloses a power station main shaft seal floating ring spring compressor please refer to fig. 1, can also be on the basis of preceding technical scheme: the telescoping device 2 is a hydraulic jack, and the telescoping device 2 is arranged on the top of the bracket 12 in an inverted mode. For example, the telescopic rod of the telescopic device 2 faces downward, the cylinder part of the telescopic device 2 is fixed to the top of the bracket 12, and after the handle pump of the hydraulic jack is manually operated in a reciprocating manner, the telescopic rod of the hydraulic jack vertically compresses the spring downward.

Referring to fig. 2, it is understood that the arrangement of the telescopic device 2 is not limited to the above-mentioned embodiment, for example, the telescopic device 2 is a hydraulic jack, and the upper end of the telescopic rod of the telescopic device 2 is fixedly connected to the top of the bracket 12. Thus, after the handle pump of the hydraulic jack is manually operated in a reciprocating manner, the oil cylinder part of the hydraulic jack vertically compresses the spring downwards.

The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as falling within the scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. according to the design spirit of the present invention are made.

Claims

1. A hydropower station main shaft seal floating ring spring compressor is characterized by comprising:

the reaction frame (1) comprises a base (11) and a bracket (12) fixedly connected with the base (11), wherein the middle part of the base (11) is provided with a through hole for a spring to pass through,

a telescopic device (2) mounted on the bracket (12) opposite the through hole, the acting part of the telescopic device (2) being configured to move vertically up and down to compress the spring in the through hole when moving downward.

2. The hydropower station main shaft sealing floating ring spring compressor as claimed in claim 1, further comprising a first magnetic block (3) and a second magnetic block (4), wherein the first magnetic block (3) and the second magnetic block (4) are respectively mounted on the base (11) at two sides of the through hole so as to adsorb the base (11) on the floating ring.

3. The hydroelectric power plant main shaft seal floating ring spring compressor defined in claim 2, the base (11) comprises a first bottom plate (111), a second bottom plate (112) and a ring-shaped member (113), one end of each first bottom plate (111) is provided with a first bent hook part (1111) bent upwards, one end of the second bottom plate (112) is provided with a second bent hook part (1121) which is bent upwards, two ends of the ring-shaped piece (113) are respectively buckled on the first hook part (1111) and the second hook part (1121), the through hole is a central hole of the annular piece (113), the first magnetic block (3) and the second magnetic block (4) are respectively arranged on the first bottom plate (111) and the second bottom plate (112), the support (12) is n-shaped, and the lower ends of the two side walls of the support (12) are fixedly connected with the other ends of the first bottom plate (111) and the second bottom plate (112) respectively.

4. The hydropower station spindle seal floating ring spring compressor as claimed in claim 3, wherein the width of the first magnetic block (3) is larger than that of the first bottom plate (111), the width of the second magnetic block (4) is larger than that of the second bottom plate (112), grooves are formed in the bottom surfaces of the first magnetic block (3) and the second magnetic block (4), the depth of each groove is equal to the thickness of the first bottom plate (111) and the thickness of the second bottom plate (112), and the first bottom plate (111) and the second bottom plate (112) are inserted into the grooves.

5. The hydropower station main shaft sealing floating ring spring compressor according to any one of claims 1-4, characterized in that the telescoping device (2) is a hydraulic jack, and the telescoping device (2) is mounted upside down on top of the bracket (12).

6. The hydropower station main shaft sealing floating ring spring compressor as claimed in any one of claims 1 to 4, wherein the telescopic device (2) is a hydraulic jack, and the upper end of a telescopic rod of the telescopic device (2) is fixedly connected with the top of the bracket (12).