Bearing bush of hydraulic generator

Abstract

The utility model discloses a bearing bush of a hydro-generator, which belongs to the technical field of bearing bushes and comprises a bearing bush component. A gap detection mechanism is arranged on the side wall of the bearing bush assembly and used for monitoring the offset between the rotating shaft and the bearing bush assembly in real time. A temperature linkage type lubricating mechanism is arranged on the upper bearing bush, the temperature linkage type lubricating mechanism comprises an adjustable oil outlet assembly and a temperature control driving assembly, and after the shaft neck or the shaft is installed between the upper bearing bush and the lower bearing bush, the upper bearing bush and the lower bearing bush are connected and fixed; the offset of the shaft and the bearing bush assembly is monitored in real time through the gap detection mechanism, so that related personnel can conveniently adjust and maintain the shaft; when the working temperature of the bearing bush assembly is high, the temperature control driving assembly can increase the oil outlet amount of the adjustable oil outlet assembly in time, the lubricating performance of the bearing bush assembly is improved, and when the working temperature of the bearing bush assembly is reduced, the temperature control driving assembly can reduce the oil outlet amount of the adjustable oil outlet assembly in time, and waste of lubricating oil is avoided.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a bearing for a hydro-generator. Background Technology

[0002] Bearing bushes are an important component of the supporting structure of a rotating shaft, and their performance directly affects the working condition of the shaft or bearing.

[0003] Chinese patent CN219623092U discloses a bearing bush for a hydro-generator with cooling function. The bearing bush includes two symmetrical one-way valves slidably connected to it. A plug is fixedly connected to the bearing bush, and a connecting seat is slidably fitted onto the outer side of the plug. The connecting seat is fixedly connected to the one-way valves and contacts the bearing bush. A plug rod is slidably connected inside the connecting seat and slidably connected to the plug. A pull block is fixedly connected to the plug rod and contacts the connecting seat. This bearing bush allows for the connection and use of one-way valves, and the connection process is more convenient and easy to operate. However, when the bearing bush is working, if the amount of lubricating oil is too large, it will cause lubricating oil overflow and contamination; if the amount of lubricating oil is too small, the friction force generated by the bearing bush will be too large.

[0004] Based on this, the present invention designs a bearing for a hydro-generator to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a bearing for a hydro-generator.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bearing for a hydro-generator, comprising a bearing assembly;

[0008] The bearing assembly includes an upper bearing and a lower bearing arranged symmetrically, connected by a connecting component; the inner circumferential surface of the bearing assembly has a lubrication groove, which is spiral in shape.

[0009] The sidewall of the bearing assembly is equipped with a clearance detection mechanism for real-time monitoring of the offset between the rotating shaft and the bearing assembly;

[0010] The upper bearing is equipped with a temperature-linked lubrication mechanism, which includes an adjustable oil outlet component and a temperature control drive component. The adjustable oil outlet component and the temperature control drive component are located on the top of the upper bearing. The adjustable oil outlet component is used to inject lubricating oil into the inner side of the upper bearing. The temperature control drive component is used to increase the oil output of the adjustable oil outlet component when the bearing is at a high temperature and to decrease the oil output of the adjustable oil outlet component when the bearing is at a low temperature.

[0011] Furthermore, the adjustable oil outlet assembly includes an oil storage chamber, a lubrication chamber, a movable baffle, a first oil outlet hole, and a second oil outlet hole. An oil storage chamber is provided inside the upper bearing bush, and an oil injection pipe communicating with the oil storage chamber is fixedly installed on the top of the upper bearing bush. A lubrication chamber is provided on the inner circumferential surface of the upper bearing bush, and multiple first oil outlet holes communicating with the oil storage chamber are provided at equal intervals along the length direction of the lubrication chamber at the bottom of the lubrication chamber. The movable baffle is slidably connected to the bottom of the lubrication chamber, and multiple second oil outlet holes corresponding one-to-one with the first oil outlet holes are provided on the movable baffle.

[0012] Furthermore, the first oil outlet and the second oil outlet are the same size and shape, and the combination of the first oil outlet and the second oil outlet forms an oil outlet channel.

[0013] Furthermore, the temperature control drive assembly includes a sealing cavity, a sealing piston block, and a second spring. The top of the upper bearing has a sealing cavity, and the sealing piston block slides and seals against the inner wall of the sealing cavity. One end of the sealing piston block is fixedly connected to a movable baffle, and the other end of the sealing piston block is fixedly installed between the sealing cavity and the sealing cavity.

[0014] Furthermore, the gap detection mechanism is provided in two sets and is arranged perpendicular to each other, so as to monitor the offset between the shaft and the bearing assembly in real time from two orthogonal directions.

[0015] Furthermore, the gap detection mechanism includes a mounting base, a sliding rod, a connecting block, ball bearings, a first spring, and a baffle. The mounting base is fixedly connected to the side wall of the bearing assembly, and the sliding rod is slidably connected to the mounting base. One end of the sliding rod near the center of the bearing assembly is connected to the connecting block, and the connecting block is provided with ball bearings for abutting against the shaft. A baffle is fixedly installed at the other end of the sliding rod, and the first spring is sleeved on the outside of the sliding rod. The two ends of the first spring are fixedly connected to the mounting base and the baffle, respectively.

[0016] Furthermore, a movable conductive sheet is fixedly installed on the connecting block, and a fixed conductive sheet that mates with the movable conductive sheet is fixedly installed on the mounting base.

[0017] Furthermore, the connecting block and the slide rod are provided with matching threads.

[0018] Compared with the prior art, the advantages of this utility model are as follows: After the journal or shaft is installed between the upper and lower bearing shells, the upper and lower bearing shells are connected and fixed. When the bearing shell assembly is working, the offset between the shaft and the bearing shell assembly is monitored in real time by the gap detection mechanism, so that relevant personnel can adjust and maintain the shaft. When the operating temperature of the bearing shell assembly is high, the temperature control drive component will increase the oil output of the adjustable oil output component in time to improve the lubrication performance of the bearing shell assembly. When the operating temperature of the bearing shell assembly decreases, the temperature control drive component will reduce the oil output of the adjustable oil output component in time to avoid waste of lubricating oil. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This utility model relates to a three-dimensional bearing of a hydro-generator. Figure 1 ;

[0021] Figure 2 This is a front view of a bearing bush of a hydro-generator according to the present invention;

[0022] Figure 3 This utility model relates to a three-dimensional bearing of a hydro-generator. Figure 2 ;

[0023] Figure 4 This is a side half-sectional view of the bearing bush of a hydro-generator according to the present invention;

[0024] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0025] The labels in the diagram represent:

[0026] 1. Upper bearing shell; 2. Lower bearing shell; 3. Connecting plate; 4. Bolt hole; 5. Lubrication groove; 6. Gap detection mechanism; 61. Mounting base; 62. Slide rod; 63. Connecting block; 64. Ball bearing; 65. First spring; 66. Baffle; 67. Thread; 68. Fixed conductive plate; 69. Movable conductive plate; 7. Temperature-linked lubrication mechanism; 71. Oil reservoir; 72. Lubrication chamber; 73. Movable baffle; 74. First oil outlet; 75. Second oil outlet; 76. Sealing chamber; 77. Sealing piston block; 78. Second spring; 8. Oil injection pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0029] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-5 A bearing for a hydro-generator, comprising a bearing assembly;

[0030] The bearing assembly includes an upper bearing 1 and a lower bearing 2 arranged symmetrically. The upper bearing 1 and the lower bearing 2 are connected by a connecting assembly. The connecting assembly includes a connecting plate 3 and bolt holes 4. The two connecting plates 3 are symmetrically fixed on the left and right sides of the upper bearing 1 or the lower bearing 2. The connecting plate 3 has several bolt holes 4, which are used to install bolts. Thus, the upper bearing 1 and the lower bearing 2 can be quickly disassembled and assembled by the cooperation of bolts and nuts.

[0031] The inner ring surface of the bearing assembly is provided with a lubrication groove 5, which is set in a spiral shape to make the lubricating oil evenly distributed, so as to quickly form an oil film when the bearing assembly is working.

[0032] A clearance detection mechanism 6 is provided on the side wall of the bearing assembly to monitor the offset between the rotating shaft and the bearing assembly in real time.

[0033] The upper bearing 1 is provided with a temperature-linked lubrication mechanism 7, which includes an adjustable oil outlet component and a temperature control drive component. The adjustable oil outlet component and the temperature control drive component are located on the top of the upper bearing 1. The adjustable oil outlet component is used to inject lubricating oil into the inner side of the upper bearing 1. The temperature control drive component is used to increase the oil output of the adjustable oil outlet component when the bearing is at a high temperature and to decrease the oil output of the adjustable oil outlet component when the bearing is at a low temperature.

[0034] In this invention, after the journal or shaft is installed between the upper bearing shell 1 and the lower bearing shell 2, the upper bearing shell 1 and the lower bearing shell 2 are connected and fixed. When the bearing shell assembly is working, the offset between the shaft and the bearing shell assembly is monitored in real time by the gap detection mechanism 6, so that relevant personnel can adjust and maintain the shaft. When the working temperature of the bearing shell assembly is high, the temperature control drive component will increase the oil output of the adjustable oil outlet component in time to improve the lubrication performance of the bearing shell assembly. When the working temperature of the bearing shell assembly decreases, the temperature control drive component will reduce the oil output of the adjustable oil outlet component in time to avoid waste of lubricating oil.

[0035] The adjustable oil outlet assembly includes an oil storage chamber 71, a lubrication chamber 72, a movable baffle 73, a first oil outlet hole 74 and a second oil outlet hole 75. An oil storage chamber 71 is provided inside the upper bearing 1. An oil injection pipe 8 communicating with the oil storage chamber 71 is fixedly installed on the top of the upper bearing 1, and a one-way valve is provided on the oil injection pipe 8.

[0036] The inner ring surface of the upper bearing 1 is provided with a lubrication cavity 72. The bottom of the lubrication cavity 72 is provided with a plurality of first oil outlet holes 74 that communicate with the oil storage cavity 71 at equal intervals along the length of the lubrication cavity 72. The movable baffle 73 is slidably connected to the bottom of the lubrication cavity 72. The movable baffle 73 is provided with a plurality of second oil outlet holes 75 that correspond one-to-one with the first oil outlet holes 74. The first oil outlet holes 74 and the second oil outlet holes 75 are the same size and shape.

[0037] The first oil outlet hole 74 and the second oil outlet hole 75 together form an oil outlet channel. The intersection of the first oil outlet hole 74 and the second oil outlet hole 75 is the cross-sectional size of the oil outlet channel. By controlling the alignment of the first oil outlet hole 74 and the second oil outlet hole 75, the cross-sectional size of the oil outlet channel can be changed, thereby adjusting the oil outlet speed of the lubricating oil. When the first oil outlet hole 74 and the second oil outlet hole 75 are completely aligned and concentric, the cross-sectional size of the oil outlet channel is the same as the diameter of the first oil outlet hole 74 and the second oil outlet hole 75, and the oil outlet speed is the fastest at this time.

[0038] The temperature control drive assembly includes a sealing cavity 76, a sealing piston block 77, and a second spring 78. The top of the upper bearing 1 has a sealing cavity 76. The sealing piston block 77 slides and seals against the inner wall of the sealing cavity 76. One end of the sealing piston block 77 is fixedly connected to the movable baffle 73, and the other end of the sealing piston block 77 is fixedly installed with the second spring 78 between it and the sealing cavity 76.

[0039] In this invention, when the operating temperature of the bearing assembly is low, the cross-section of the oil outlet channel formed by the first oil outlet hole 74 and the second oil outlet hole 75 is small, and the oil outlet speed of the lubricating oil is slow. When the operating temperature of the bearing assembly increases, the internal pressure of the sealing cavity 76 increases. Under the action of air pressure, the sealing piston block 77 is pushed to slide, which in turn drives the movable baffle 73 to slide, so that the first oil outlet hole 74 and the second oil outlet hole 75 are gradually aligned, and the cross-section of the oil outlet channel is gradually increased, thereby increasing the oil outlet speed of the lubricating oil, increasing the lubrication performance of the bearing assembly, and preventing the operating temperature of the bearing assembly from rising continuously.

[0040] The gap detection mechanism 6 is provided in two sets and is arranged perpendicularly to each other, which monitors the offset between the shaft and the bearing assembly in real time from two orthogonal directions.

[0041] Furthermore, the gap detection mechanism 6 is provided with four sets of evenly distributed circular arrays. The two sets of symmetrically distributed gap detection mechanisms 6 cooperate from both sides of the shaft to measure the offset between the shaft and the bearing assembly more accurately.

[0042] The gap detection mechanism 6 includes a mounting base 61, a slide rod 62, a connecting block 63, a ball bearing 64, a first spring 65, and a baffle 66. The mounting base 61 is fixedly connected to the side wall of the bearing assembly. The slide rod 62 is slidably connected to the mounting base 61. One end of the slide rod 62 near the center of the bearing assembly is connected to the connecting block 63. The connecting block 63 is provided with a ball bearing 64 for abutting against the shaft. The other end of the slide rod 62 is fixedly installed with the baffle 66. The first spring 65 is sleeved on the outside of the slide rod 62. The two ends of the first spring 65 are fixedly connected to the mounting base 61 and the baffle 66, respectively.

[0043] A movable conductive sheet 69 is fixedly installed on the connecting block 63, and a fixed conductive sheet 68 that mates with the movable conductive sheet 69 is fixedly installed on the mounting base 61.

[0044] Furthermore, the connecting block 63 and the slide rod 62 are provided with matching threads 67. By rotating the connecting block 63 on the slide rod 62, the distance between the connecting block 63 and the gap detection mechanism 6 can be adjusted to meet the monitoring requirements of different shaft offsets.

[0045] In this invention, when the bearing assembly is working, the shaft rotates inside the bearing assembly, and the ball bearing 64 rolls on the outer ring surface of the shaft. When the shaft deviates, it pushes the slide rod 62 to slide along the mounting base 61, thereby realizing the monitoring of the shaft's deviation during operation. When the shaft's deviation reaches the set value, the fixed conductive plate 68 will contact the movable conductive plate 69 to conduct electricity, so as to send an electrical signal to the central control unit, so that maintenance personnel can adjust the shaft in a timely manner.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bearing for a hydro-generator, comprising a bearing assembly, characterized in that: The bearing assembly includes an upper bearing (1) and a lower bearing (2) arranged symmetrically, which are connected by a connecting component; a lubrication groove (5) is provided on the inner circumferential surface of the bearing assembly, and the lubrication groove (5) is spiral in shape. A clearance detection mechanism (6) is provided on the side wall of the bearing assembly to monitor the offset between the rotating shaft and the bearing assembly in real time. A temperature-linked lubrication mechanism (7) is provided on the upper bearing (1). The temperature-linked lubrication mechanism (7) includes an adjustable oil outlet component and a temperature control drive component. The adjustable oil outlet component and the temperature control drive component are located on the top of the upper bearing (1). The adjustable oil outlet component is used to inject lubricating oil into the inner side of the upper bearing (1). The temperature control drive component is used to increase the oil output of the adjustable oil outlet component when the bearing is at a high temperature and to reduce the oil output of the adjustable oil outlet component when the bearing is at a low temperature.

2. The bearing of the hydro-generator according to claim 1, characterized in that, The adjustable oil outlet assembly includes an oil storage chamber (71), a lubrication chamber (72), a movable baffle (73), a first oil outlet hole (74), and a second oil outlet hole (75). An oil storage chamber (71) is provided inside the upper bearing (1), and an oil injection pipe (8) communicating with the oil storage chamber (71) is fixedly installed on the top of the upper bearing (1). A lubrication chamber (72) is provided on the inner ring surface of the upper bearing (1), and a plurality of first oil outlet holes (74) communicating with the oil storage chamber (71) are provided at equal intervals along the length direction of the lubrication chamber (72) at the bottom of the lubrication chamber (72). The movable baffle (73) is slidably connected to the bottom of the lubrication chamber (72), and a plurality of second oil outlet holes (75) corresponding one-to-one with the first oil outlet holes (74) are provided on the movable baffle (73).

3. The bearing of the hydro-generator according to claim 2, characterized in that, The first oil outlet (74) and the second oil outlet (75) are the same size and shape, and the combination of the first oil outlet (74) and the second oil outlet (75) forms an oil outlet channel.

4. The bearing of the hydro-generator according to claim 3, characterized in that, The temperature control drive assembly includes a sealing cavity (76), a sealing piston block (77), and a second spring (78). The top of the upper bearing (1) is provided with a sealing cavity (76). The sealing piston block (77) slides and seals against the inner wall of the sealing cavity (76). One end of the sealing piston block (77) is fixedly connected to the movable baffle (73), and the other end of the sealing piston block (77) is fixedly installed between the sealing cavity (76) and the sealing piston block (77).

5. The bearing bush of the hydro-generator according to claim 4, characterized in that, The gap detection mechanism (6) is provided in two sets and is set perpendicular to each other, and monitors the offset between the shaft and the bearing assembly in real time from two orthogonal directions.

6. The bearing of the hydro-generator according to claim 5, characterized in that, The gap detection mechanism (6) includes a mounting base (61), a slide rod (62), a connecting block (63), a ball bearing (64), a first spring (65), and a baffle (66). The mounting base (61) is fixedly connected to the side wall of the bearing assembly. The slide rod (62) is slidably connected to the mounting base (61). One end of the slide rod (62) near the center of the bearing assembly is connected to the connecting block (63). The connecting block (63) is provided with a ball bearing (64) for abutting against the shaft. The other end of the slide rod (62) is fixedly installed with a baffle (66). The first spring (65) is sleeved on the outside of the slide rod (62). The two ends of the first spring (65) are fixedly connected to the mounting base (61) and the baffle (66) respectively.

7. The bearing of the hydro-generator according to claim 6, characterized in that, A movable conductive sheet (69) is fixedly installed on the connecting block (63), and a fixed conductive sheet (68) that cooperates with the movable conductive sheet (69) is fixedly installed on the mounting base (61).

8. The bearing of the hydro-generator according to claim 7, characterized in that, The connecting block (63) and the slide bar (62) are provided with matching threads (67).

Images