Hydraulic generator guide bearing oil cooling device

Abstract

The utility model discloses a hydro-generator guide bearing oil cooling device, which relates to the technical field of hydro-generator cooling and comprises a main shaft, a first bearing shell and a second bearing shell are respectively arranged on the outer walls of the front side and the rear side of the main shaft, and bearing bushes distributed in a circumferential array are arranged in the first bearing shell and the second bearing shell. The bottom of the outer side wall of the first bearing shell is fixedly connected with an oil outlet pipe in a penetrating mode, the oil outlet pipe is used for discharging cooling oil, the top of the outer side wall of the second bearing shell is fixedly connected with an oil inlet pipe in a penetrating mode, the oil inlet pipe is used for feeding the cooling oil, and blocking pieces are fixed to the inner side wall of the first bearing shell and the inner side wall of the second bearing shell. Through the arrangement of the first bearing shell, the second bearing shell, the blocking piece, the oil inlet pipe and the oil outlet pipe, a cooling oil one-way moving channel can be formed along the main shaft, then cooling oil is discharged after flowing by a circle, and therefore it is guaranteed that the cooling oil is thoroughly utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to water turbine generator cooling technical field especially relates to water turbine generator guide bearing oil cooling device. BACKGROUND

[0002] Water turbine generator guide bearing is important element of water turbine generator bearing, and it mainly bears rotor mechanical unbalance force and single side magnetic pull caused by rotor eccentricity, and its main function is to prevent the swing of the shaft. Guide bearing is composed of guide bearing bush, support bolt, sleeve, race, sliding rotor and oil cooler and other main components.

[0003] At present, the guide bearing oil cooler in the prior art sets an oil inlet on one side of the bearing and sets an oil outlet on the other side of the bearing, oil enters through the oil inlet hole, and is discharged from the oil outlet after heat exchange. However, in the use of the traditional guide bearing oil cooler, the flow channel of the oil is divided into two parts after the oil enters, and the oil cannot flow around the bearing and then be discharged, which leads to the problem that the heat exchange performance cannot be completely utilized. Therefore, the water turbine generator guide bearing oil cooling device is provided by the person skilled in the art to solve the problem raised in the background. SUMMARY

[0004] In view of the deficiencies of the prior art, the water turbine generator guide bearing oil cooling device is provided to solve the problem that the heat exchange performance cannot be completely utilized due to the fact that the flow channel of the oil is divided into two parts after the oil enters and the oil cannot flow around the bearing and then be discharged.

[0005] To achieve the above purpose, the utility model discloses the following technical scheme: a water turbine generator guide bearing oil cooling device, comprising a main shaft, the front and rear two sides of the main shaft are respectively provided with bearing shell one and bearing shell two, the inside of bearing shell one and bearing shell two is respectively provided with bearing bush which is distributed in a circular array, the bottom of the outer side wall of bearing shell one is fixed and penetrates the connection with oil outlet pipe, and the oil outlet pipe is used for cooling oil, the top of the outer side wall of bearing shell two is fixed and penetrates the connection with oil inlet pipe, and the oil inlet pipe is used for cooling oil, the inner side wall of bearing shell one and bearing shell two is fixed with blocking piece, two blocking pieces are located between the position of the minor arc formed by the oil inlet pipe and the oil outlet pipe, so that the inside of bearing shell one and bearing shell two forms the cooling oil one-way moving channel.

[0006] As a further technical scheme of the utility model, the bearing shell one and the bearing shell two are threadedly fixed with the bearing bush through the support screw, and a plurality of heat absorbing mesh rings are arranged between the inside of the bearing shell one and the bearing shell two and the bearing bush, and the plurality of heat absorbing mesh rings are fixed on the outer wall of the support screw.

[0007] The utility model discloses a further technical scheme, the outer side wall of main shaft and be located inside bearing shell no.

[0008] The utility model discloses a further technical scheme, the outer side wall of bearing shell no. and bearing shell no. 2 are fixed with sealing strip no. 1 and sealing strip no. 2 respectively, and sealing strip no. 1 and sealing strip no. 2 are fixedly connected with each other through a plurality of fastening screws.

[0009] The utility model discloses a further technical scheme, the outer top surface and the outer bottom surface of bearing shell no. and bearing shell no. 2 are equipped with sealing top cover and sealing bottom cover respectively, the sealing top cover is fixedly connected with the outer top surface of bearing shell no. and bearing shell no. 2 through screw, and the sealing bottom cover is fixedly connected with the outer bottom surface of bearing shell no. and bearing shell no. 2 through screw.

[0010] The utility model discloses a further technical scheme, the one end of oil inlet pipe and oil outlet pipe away from main shaft is fixed with the connecting flange.

[0011] The utility model discloses a water -turbine generator guide bearing oil cooling device, and compared with prior art has the following beneficial effects:

[0012] 1, the water -turbine generator guide bearing oil cooling device of this design, through the bearing shell no. of setting, bearing shell no. 2, baffle, oil inlet pipe, oil outlet pipe, can form a cooling oil one -way moving channel along the main shaft, and then make cooling oil flow a circle and discharge, to guarantee that cooling oil uses completely.

[0013] 2, the water -turbine generator guide bearing oil cooling device of this design, through the heat -absorbing net ring of setting, can absorb the heat from the bearing, and due to the design of the porous structure, the contact area with cooling oil is larger, thereby improving the cooling effect. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the first three -dimensional structure schematic view of water -turbine generator guide bearing oil cooling device;

[0015] Figure 2 It is the second three -dimensional structure schematic view of water -turbine generator guide bearing oil cooling device;

[0016] Figure 3 It is the first cross section three -dimensional structure schematic view of water -turbine generator guide bearing oil cooling device;

[0017] Figure 4 It is the second cross section three -dimensional structure schematic view of water -turbine generator guide bearing oil cooling device;

[0018] Figure 5 It is the bearing shell no. three -dimensional structure schematic view of water -turbine generator guide bearing oil cooling device.

[0019] In the drawings:

[0020] 1. main shaft; 101, bearing housing one; 102, bearing housing two; 103, bearing bush; 104, oil outlet pipe; 105, oil inlet pipe; 106, blocking piece;

[0021] 2. support screw; 201, heat absorption ring;

[0022] 3. limiting ring;

[0023] 4. sealing strip one; 401, sealing strip two; 402, fastening screw;

[0024] 5. sealing top cover; 501, sealing bottom cover;

[0025] 6. connecting flange. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-5 The present application provides a water turbine generator guide bearing oil cooling device technical scheme, which comprises a main shaft 1 (the main shaft 11 is the rotating shaft of the water turbine generator), the front and rear outer walls of the main shaft 1 are respectively provided with a bearing housing one 101 and a bearing housing two 102, the mutually close outer walls of the bearing housing one 101 and the bearing housing two 102 are respectively fixed with a sealing strip one 4 and a sealing strip two 401, the sealing strip one 4 and the sealing strip two 401 are fixed and connected with each other through a plurality of fastening screws 402, the fastening screws 402 are sequentially screwed to connect and fix the sealing strip one 4 and the sealing strip two 401, and then the bearing housing one 101 and the bearing housing two 102 are closed around the outer wall of the main shaft 1, so as to facilitate the flow of the cooling oil in the later stage, and the connecting blocks on the outer walls of the bearing housing one 101 and the bearing housing two 102 are used to facilitate the fixation with external equipment.

[0028] The outer side wall of the main shaft 1 is fixed with a limiting ring 3 inside the bearing shell one 101 and the bearing shell two 102, the inner side of the bearing shell one 101 and the bearing shell two 102 is provided with a circumferential array of bearing bushings 103, the bearing shell one 101 and the bearing shell two 102 and the bearing bushings 103 are threadedly fixed by the supporting screws 2, the position of the bearing bushings 103 in the bearing shell one 101 and the bearing shell two 102 is locked by the supporting screws 2, the limiting ring 3 can be guided by the bearing bushings 103, thereby indirectly guiding the main shaft 1, the inner side of the bearing shell one 101 and the bearing shell two 102 and between the bearing bushings 103 are provided with a plurality of heat absorbing mesh rings 201, the plurality of heat absorbing mesh rings 201 are fixed on the outer wall of the supporting screws 2, in use, the heat absorbing mesh rings 201 are preferably made of steel wire mesh, on the one hand, the heat absorbing capacity is good, the heat in the bearing shell one 101 and the bearing shell two 102 can be absorbed, and when the cooling oil flows in the bearing shell one 101 and the bearing shell two 102, the heat on the heat absorbing mesh rings 201 can be taken away, meeting the purpose of further heat dissipation, on the other hand, the steel wire mesh itself has certain strength and good supporting capacity, avoiding the situation that soft collapse leads to continuous heat absorption.

[0029] The outer side wall of the bearing shell one 101 is fixed and connected with the oil outlet pipe 104, and the oil outlet pipe 104 is used for cooling oil, the outer side wall of the bearing shell two 102 is fixed and connected with the oil inlet pipe 105, and the oil inlet pipe 105 is used for cooling oil, the oil inlet pipe 105 and the oil outlet pipe 104 are fixed with the connecting flanges 6 away from the main shaft 1, the cooling oil pipe is connected with the device through the connecting flanges 6, thereby facilitating oil inlet and outlet, the inner side wall of the bearing shell one 101 and the bearing shell two 102 is fixed with the blocking pieces 106, the two blocking pieces 106 are located between the arcs formed by the oil inlet pipe 105 and the oil outlet pipe 104, so that the inside of the bearing shell one 101 and the bearing shell two 102 forms a one-way moving channel for cooling oil, when the cooling oil is blocked by the blocking pieces 106 after being fed from the oil inlet pipe 105, it can only flow away from the blocking piece 106 along the inside of the bearing shell two 102, after flowing around the inside of the bearing shell one 101, it is intercepted by the blocking piece 106, at this time, the oil carrying heat can be discharged from the oil outlet pipe 104, through the one-way movement of the cooling oil, thereby ensuring the complete use of the cooling oil.

[0030] The outer top surface and the outer bottom surface of the bearing housing one 101 and the bearing housing two 102 are respectively provided with a sealing top cover 5 and a sealing bottom cover 501, the sealing top cover 5 is fixedly connected with the outer top surface of the bearing housing one 101 and the bearing housing two 102 through screws, and the sealing bottom cover 501 is fixedly connected with the outer bottom surface of the bearing housing one 101 and the bearing housing two 102 through screws. Through the sealing top cover 5 and the sealing bottom cover 501, the bearing housing one 101 and the bearing housing two 102 can be sealed, thereby avoiding the outflow of cooling oil, and the normal rotation of the main shaft 1 is not affected.

[0031] The working principle of the utility model is as follows: when in use, the main shaft 1 rotates, the bearing bush 103 can indirectly guide the main shaft 1 by guiding the limiting ring 3, and the bearing bush 103 generates a large amount of heat, the cooling oil enters through the oil inlet pipe 105, is blocked by the blocking piece 106, and can only flow to the side away from the blocking piece 106 along the inside of the bearing housing two 102, and after flowing around the inside of the bearing housing one 101, the oil is intercepted by the blocking piece 106, at this time, the oil carrying heat can be discharged along the oil outlet pipe 104.

[0032] It should be noted that the standard parts used therein can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means of bolts, rivets, welding and the like in the prior art, and the mechanical parts and equipment adopt conventional models in the prior art, and the components known to those skilled in the art can be known by technical manual or by conventional experimental method

[0033] The above only describes the preferred embodiments of the utility model, and it should be noted that for those skilled in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A cooling device for the guide bearing oil of a hydro-generator, characterized in that, Includes a main shaft (1), and the front and rear outer walls of the main shaft (1) are respectively provided with a bearing housing first (101) and a bearing housing second (102). The bearing housing first (101) and the bearing housing second (102) are both provided with bearing bushes (103) arranged in a circumferential array inside. The bottom of the outer wall of the bearing housing first (101) is fixed and connected to an oil outlet pipe (104). An oil inlet pipe (105) is fixed and connected to the top of the outer side wall of the bearing housing 2 (102). A baffle plate (106) is fixed to the inner side wall of the bearing housing 1 (101) and the bearing housing 2 (102). The two baffle plates (106) are located between the minor arc formed by the oil inlet pipe (105) and the oil outlet pipe (104) so ​​that a one-way cooling oil movement channel is formed inside the bearing housing 1 (101) and the bearing housing 2 (102).

2. The hydro-generator guide bearing oil cooling device according to claim 1, characterized in that, The bearing housing 1 (101) and bearing housing 2 (102) are threadedly fixed to the bearing bush (103) by the support screw (2). Several heat-absorbing mesh rings (201) are provided inside the bearing housing 1 (101) and bearing housing 2 (102) and between them and the bearing bush (103). Several heat-absorbing mesh rings (201) are fixed on the outer wall of the support screw (2).

3. The hydraulic generator guide bearing oil cooling device according to claim 1, characterized in that, A limiting ring (3) is fixed on the outer wall of the main shaft (1) and inside the bearing housing one (101) and the bearing housing two (102).

4. The hydraulic generator guide bearing oil cooling device according to claim 1, characterized in that, Sealing strip 1 (4) and sealing strip 2 (401) are respectively fixed on the outer side walls of bearing housing 1 (101) and bearing housing 2 (102) that are close to each other. Sealing strip 1 (4) and sealing strip 2 (401) are fixedly connected to each other by a number of fastening screws (402).

5. The hydro-generator guide bearing oil cooling device according to claim 1, characterized in that, The outer top surface and outer bottom surface of the bearing housing 1 (101) and the bearing housing 2 (102) are respectively provided with a sealing top cover (5) and a sealing bottom cover (501). The sealing top cover (5) is fixedly connected to the outer top surface of the bearing housing 1 (101) and the bearing housing 2 (102) by screws. The sealing bottom cover (501) is fixedly connected to the outer bottom surface of the bearing housing 1 (101) and the bearing housing 2 (102) by screws.

6. The hydro-generator guide bearing oil cooling device according to claim 1, characterized in that, Both the oil inlet pipe (105) and the oil outlet pipe (104) have a connecting flange (6) fixed at the end away from the main shaft (1).

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