CN210326837U

CN210326837U - Vertical hydrogenerator bearing bush temperature measurement cable fixing device

Info

Publication number: CN210326837U
Application number: CN201921690192.8U
Authority: CN
Inventors: 王昆; 刘晓宇
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-04-14
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a vertical hydraulic generator bearing bush temperature measurement cable fixing device comprises fixed tray, clamp plate, fastening bolt wholly, with the welding of fixed tray bottom on generator oil groove internal surface, put into the recess on fixed tray right side with the temperature measurement cable, place clamp plate top-down again for in the clamp plate left side agrees with the draw-in groove of fixed tray left side upper end, reuse fastening bolt with clamp plate and fixed tray tight, form wholly. Lubricating oil in the bearing oil groove forms oil flow under the stirring action of the rotating shaft when the vertical hydraulic generator operates, the oil flow forms pulling impact on a temperature measuring cable of a bearing bush thermometer in the oil groove, and fault risks such as cable cracking, insulation damage and cable joint fracture are easily caused. The utility model discloses can show and improve the impact resistance of temperature measurement cable, effectively reduce the temperature measurement cable spoilage. And has the characteristics of simple structure, high reliability, convenient assembly and disassembly and the like.

Description

Vertical hydrogenerator bearing bush temperature measurement cable fixing device

The technical field is as follows:

the utility model relates to a vertical hydraulic generator bearing tile temperature measurement cable fixing device.

Background art:

the vertical water turbine generator set is generally provided with a guide bearing and a thrust bearing at the upper end and the lower end of a generator shaft, and is used for bearing the axial load and the radial swing of all rotating parts of the generator set. In order to monitor the running state of the bearing tiles at any time, each bearing tile is provided with a resistance thermometer, and a cable of the resistance thermometer needs to be led out to a monitoring end of the generator set after being laid in the oil groove for a long distance so as to feed back a temperature signal. When the unit operates, lubricating oil in the oil groove can form continuous oil flow under the stirring of the unit rotating shaft, and under the repeated impact of the oil flow, the cable irregularly swings in the oil groove, so that the accidents such as cable cracking, insulation damage, cable joint fracture and the like are easily caused, and therefore the individual blind spot of the bearing bush temperature monitoring system is caused, the working state of the bearing bush cannot be accurately and timely fed back, and the accident potential is brought to the safe and stable operation of the unit. The traditional protection mode only increases the strength of the cable, and the effect is limited.

The invention content is as follows:

the utility model aims at disclosing a can show and improve the impact resistance of temperature measurement cable, effectively reduce the vertical hydraulic generator bearing bush temperature measurement cable fixing device of temperature measurement cable spoilage, the technical scheme of the utility model is that: constitute wholly by fixed tray (1), clamp plate (2), fastening bolt (3), with fixed tray (1) bottom welding on generator oil groove (5) internal surface, put into recess (6) on fixed tray (1) right side with temperature measurement cable (4), place clamp plate (2) top-down again, make clamp plate (2) left side agree with in draw-in groove (8) of fixed tray (1) left side upper end, reuse fastening bolt (3) with clamp plate (2) and fixed tray (1) tight, form wholly. The fixed tray (1) is in an L-shaped cuboid block shape, two grooves (6) are uniformly formed in the right side of the fixed tray, and the rubber damping pad (7) is bonded to the inner sides of the grooves (6) in a whole circle; the groove (6) is a horseshoe-shaped semicircle, and the vertical arch height is 1.2 times of the radius of the semicircle; the rubber damping pad (7) is made of rubber and has certain elasticity and surface adhesion capacity, and the inner circle surface is in a rugged hilly shape; the clamping groove (8) is a rectangular concave groove, and a threaded hole (9) matched with the fastening bolt (3) is formed in the center of the bottom of the clamping groove. The pressing plate (2) is an L-shaped thin cuboid made of oil-resistant plastic, and a through hole (10) matched with the fastening bolt (3) is formed in the left side.

The technical effects are as follows:

1. the utility model has simple structure and convenient installation, only needs one welding and one tightening during the installation, and can save a large amount of field operation time;

2. the groove of the fixing tray is a horseshoe-shaped semicircle, the vertical arch height is 1.2 times of the radius of the semicircle, the temperature measuring cable can be guaranteed to be wedged into the groove stably as a whole, and the fixing performance is good;

3. after the temperature measuring cable is tightly pressed into the groove of the fixed tray by the pressing plate, the inner circle surface of the rubber damping pad in the groove is in a rugged and hilly shape, so that the static friction force can be increased, and the temperature measuring cable can be effectively prevented from moving along with oil flow;

4. because vertical hydroelectric set oil groove inner part is various, and the space is narrow and small relatively, and installation, the use of any part all can receive the space restriction. And the utility model discloses the volume is minimum, and horizontal width only is equivalent to 4 to 5 cables and places side by side, highly only is equivalent to 2 to 3 cables and becomes to be listed as and place, can place at oil groove internal surface optional position, does not basically receive installation space, places the space restriction, uses in being particularly suitable for vertical hydroelectric set oil groove.

Description of the drawings:

FIG. 1 is a detailed view of a temperature measuring cable fixing device for a bearing bush of a vertical hydraulic generator

FIG. 2 is a detailed view of the fixing tray

FIG. 3 is a view taken along the line A of FIG. 2

FIG. 4 is a view from the direction B of FIG. 2

FIG. 5 is a detail view of the pressing plate

FIG. 6 is a view from the direction C of FIG. 5

The specific implementation mode is as follows:

as shown in figure 1, a vertical hydraulic generator bearing bush temperature measurement cable fixing device, by fixed tray 1, clamp plate 2, fastening bolt 3 constitutes wholly, with the welding of fixed tray 1 bottom on 5 internal surfaces of generator oil groove, put into the recess 6 on fixed tray 1 right side with temperature measurement cable 4, place clamp plate 2 top-down again, make 2 left sides of clamp plate agree with in the draw-in groove 8 of fixed tray 1 left side upper end, reuse fastening bolt 3 with clamp plate 2 and fixed tray 1 tight, form wholly.

As shown in fig. 2, 3 and 4, the fixed tray 1 is in an L-shaped rectangular block shape, two grooves 6 are uniformly arranged on the right side, and a rubber damping pad 7 is bonded to the inner sides of the grooves 6 in a whole circle; the groove 6 is a horseshoe-shaped semicircle, and the vertical arch height is 1.2 times of the radius of the semicircle; the rubber damping pad 7 is made of rubber and has certain elasticity and surface adhesion capacity, and the inner circle surface is in a rugged hilly shape; the clamping groove 8 is a rectangular concave groove, and a threaded hole 9 matched with the fastening bolt 3 is formed in the center of the bottom of the clamping groove.

As shown in fig. 5 and 6, the pressing plate 2 is an L-shaped thin rectangular parallelepiped made of oil-resistant plastic, and has a through hole 10 at the left side for engaging with the fastening bolt 3.

Claims

1. The utility model provides a vertical hydraulic generator bearing bush temperature measurement cable fixing device which characterized by: constitute wholly by fixed tray (1), clamp plate (2), fastening bolt (3), with fixed tray (1) bottom welding on generator oil groove (5) internal surface, put into recess (6) on fixed tray (1) right side with temperature measurement cable (4), place clamp plate (2) top-down again, make clamp plate (2) left side agree with in draw-in groove (8) of fixed tray (1) left side upper end, reuse fastening bolt (3) with clamp plate (2) and fixed tray (1) tight, form wholly.

2. The fixing device for the temperature measuring cable of the bearing bush of the vertical hydraulic generator according to claim 1, which is characterized in that: the fixed tray (1) is in an L-shaped cuboid block shape, two grooves (6) are uniformly formed in the right side of the fixed tray, and the rubber damping pad (7) is bonded to the inner sides of the grooves (6) in a whole circle; the groove (6) is a horseshoe-shaped semicircle, and the vertical arch height is 1.2 times of the radius of the semicircle; the rubber damping pad (7) is made of rubber, and the inner circle surface is in a rugged hilly shape; the clamping groove (8) is a rectangular concave groove, and a threaded hole (9) matched with the fastening bolt (3) is formed in the center of the bottom of the clamping groove.

3. The fixing device for the temperature measuring cable of the bearing bush of the vertical hydraulic generator according to claim 1, which is characterized in that: the pressing plate (2) is an L-shaped thin cuboid made of oil-resistant plastic, and a through hole (10) matched with the fastening bolt (3) is formed in the left side.