Block bearing bush device for large and medium-sized motor bearing

Abstract

The utility model discloses a partitioned bearing bush device for large and medium-sized motor bearings, which relates to the technical field of bearing bushes and comprises a bearing bush block, a cooling pipe and a flow meter. The number of the bearing bush blocks is at least two, the bearing bush blocks are detachably spliced to form a cylinder shape, roundabout pipe grooves are formed in the bearing bush blocks, and the two ends of the pipe grooves are communicated with the outer sides of the bearing bush blocks; the cooling pipe is arranged in the pipe groove, and the two ends of the cooling pipe extend to the outer side of the bearing bush block; the two flow meters are connected to the two ends of the cooling pipe respectively and used for measuring the flow of liquid in the cooling pipe. A wear-resistant layer is arranged on the inner side wall of the bearing bush block and is made of a babbitt metal material. A connecting hole is formed in the side edge of the bearing bush block, and a fastening bolt for fixing is arranged on the connecting hole. The cooling pipe is wide in coverage range, maintenance personnel can conveniently monitor the flow of cooling liquid, maintenance is provided in time, and the temperature of the bearing bush is prevented from rising.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing bushes, in particular to a block bearing bush device for large and medium-sized motor bearings. Background Art

[0002] The bearing is an indispensable key component in the generator set of a hydropower station. It is mainly located between the bearing and the casing, bearing and transmitting the weight and load of the rotor. At present, some ordinary bearings are not equipped with a heat dissipation structure. During the operation, they will generate a lot of heat due to friction and load. Since the heat cannot be dissipated in time, the temperature of the bearing will rise, which will affect the lubrication effect and bearing life. In addition, some bearings are equipped with a heat dissipation structure, including a cooling pipe arranged on the bearing body. By passing coolant, the heat can be taken away in time to prevent the temperature of the bearing from rising. However, most cooling pipes have a small layout range, poor cooling effect, and it is difficult to monitor the flow of the cooling pipe. When the flow of the cooling pipe is reduced due to blockage, the heat dissipation effect will also deteriorate, which is difficult to be discovered by maintenance personnel in time. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a block bearing device for large and medium-sized motor bearings, which has a wide cooling range and is convenient for maintenance personnel to monitor the flow of coolant, provide maintenance in time, and avoid the bearing temperature from rising.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A block bearing device for large and medium-sized motor bearings includes a bearing block, a cooling pipe and a flow meter; the bearing block includes at least two blocks, the bearing blocks are detachably spliced ​​into a cylindrical shape, a circuitous pipe groove is provided on the bearing block, and the two ends of the pipe groove are connected to the outside of the bearing block; the cooling pipe is arranged in the pipe groove, and the two ends of the cooling pipe extend to the outside of the bearing block; the flow meter includes two, which are respectively connected to the two ends of the cooling pipe and are used to measure the liquid flow in the cooling pipe.

[0006] Furthermore, the pipe groove is opened on the inner side surface of the bearing block, and a fixing strip is arranged on the pipe groove, and the fixing strip is cross-connected to both sides of the pipe groove to limit the cooling pipe inside the pipe groove.

[0007] Furthermore, a wear-resistant layer is arranged on the inner side wall of the bearing block, and the wear-resistant layer is made of Babbitt alloy material.

[0008] Furthermore, the winding direction of the cooling pipe is the same as the axial direction or circumferential direction of the bearing block.

[0009] Furthermore, a connecting hole is provided on the side of the bearing block, and a fixing bolt for fixing is provided on the connecting hole.

[0010] Furthermore, the bearing block is in an arc-shaped plate shape, and the tube grooves and cooling tubes are arranged in parallel and meanderingly.

[0011] Furthermore, the bearing block is in the shape of a fan-shaped plate, and the tube grooves and cooling tubes are arranged in a divergent and circuitous manner.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By arranging a circuitous pipe groove on the bearing block and arranging a cooling pipe in the pipe groove, the coolant can cover the bearing block over a large area, thereby taking away the heat generated by the bearing block in time and improving its heat dissipation effect.

[0014] 2. By setting flow connections at both ends of the cooling pipe, the flow of coolant in the cooling pipe can be monitored in time, so that maintenance personnel can find abnormal flow and provide maintenance in time to avoid deterioration of cooling effect and thus avoid excessive bearing temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure inside a single bearing block.

[0017] Figure 3 It is a schematic diagram of the lateral interface of the bearing pad block in Example 2 of the utility model.

[0018] Figure 4 It is a schematic diagram of the layout shape of the cooling pipes in Example 2 of the utility model.

[0019] Figure 5 It is a schematic diagram of the outer contour of the bearing block in Example 3 of the utility model.

[0020] Figure 6 It is a schematic diagram of the layout shape of the cooling pipes in Example 3 of the utility model.

[0021] Numbers in the figure: 1. bearing block; 2. pipe groove; 3. wear-resistant layer; 4. cooling pipe; 5. flow meter; 6. connecting hole; 7. fixing strip; 8. tightening bolt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] As an important component in mechanical equipment, the bearing bush can be divided into an integral bearing bush and a block bearing bush according to its structure. The integral bearing bush needs to be installed and removed from the shaft end, and its repairability is relatively poor; while the block bearing bush can be directly installed and removed from the middle of the shaft, which improves the repairability. The utility model designs a cooling structure based on the block bearing bush, which has good heat dissipation performance and is easy to repair.

[0024] Embodiment 1:

[0025] like Figure 1 and Figure 2 As shown, the block bearing device for large and medium-sized motor bearings of this embodiment includes a bearing block 1, a cooling tube 4 and a flow meter 5. The bearing block 1 includes two arc-shaped plates, and the bearing blocks 1 can be detachably spliced ​​into a cylindrical shape. Specifically, each bearing block 1 corresponds to 180° of the circumference. In addition, the bearing block 1 can be three pieces, and the bearing block 1 corresponds to one-third of the circumference, or the bearing block 1 can be four pieces, and the bearing block 1 corresponds to one-quarter of the circumference. The number of bearing blocks 1 can be increased or decreased according to actual needs. In order to facilitate the connection of the bearing block 1 into a cylindrical shape, a connecting hole 6 is provided on the side of the bearing block 1, and a fixing bolt 8 for fixing is provided on the connecting hole 6, and the bearing block 1 is fixed by the fixing bolt 8.

[0026] In order to improve the heat dissipation effect of the bearing block 1, a pipe groove 2 is arranged on the bearing block 1 in a parallel and circuitous manner. The pipe groove 2 is opened on the inner side of the bearing block 1, and the two ends of the pipe groove 2 are connected to the outer side of the bearing block 1. The cooling pipe 4 is arranged in the pipe groove 2, and the two ends of the cooling pipe 4 extend to the outer side of the bearing block 1. Therefore, the cooling pipe 4 is also arranged in a parallel and circuitous manner, and the circuitous direction of the cooling pipe 4 is in the same direction as the circumferential direction of the bearing block 1. Among them, the cooling pipe 4 can be made of copper tube or aluminum tube. The copper tube has better thermal conductivity, which is conducive to quickly reducing the temperature of the bearing block 1, while the aluminum tube has better corrosion resistance and has a longer service life in the harsh environment of the hydropower station.

[0027] In order to stably fix the cooling pipe 4 in the pipe groove 2, a fixing bar 7 is provided on the pipe groove 2. The fixing bar 7 is connected to both sides of the pipe groove 2 across to limit the cooling pipe 4 inside the pipe groove 2. The specific fixing bar 7 is made of iron wire. By welding and fixing the two ends of the iron wire to the side walls of the pipe groove 2, the cooling pipe 4 can be blocked inside the pipe groove 2.

[0028] After the cooling pipe 4 is fixed in the pipe groove 2, a wear-resistant layer 3 needs to be provided on the inner wall of the bearing block 1. The wear-resistant layer 3 is made of babbitt alloy material. If the babbitt alloy layer is welded and fixed to the bearing block 1, it is beneficial to protect the cooling pipe 4 in the pipe groove 2 and the inner side surface of the bearing block 1 and improve the wear resistance.

[0029] The flowmeter 5 includes two flowmeters, which are respectively connected to the two ends of the cooling pipe 4 and are used to measure the flow rate of the liquid in the cooling pipe 4 and can measure the flow value of the coolant flowing into and out of the cooling pipe 4.

[0030] After the bearing device is installed, the inner side of the bearing block 1 contacts the bearing on the medium and large motor, and generates a lot of heat due to friction with the bearing block 1 during operation. After the coolant passes into the cooling pipe 4, the heat of the bearing block 1 can be reduced. The device has been put into use in the first and second level hydropower stations. Tests have found that the temperature is 6°C lower than that of ordinary bearings, and maintenance personnel can determine whether the pipe is blocked by measuring the value of the flow meter 5, so as to provide timely maintenance.

[0031] Embodiment 2:

[0032] like Figure 1 and Figure 2 As shown, the main structure of the segmented bearing device for large and medium-sized motor bearings of this embodiment is basically the same as that of embodiment 1, except that: the pipe groove 2 is arranged inside the bearing block 1, and the pipe groove 2 and the cooling pipe 4 arranged on the pipe groove 2 are both arranged in parallel and circuitously, but their circuitous direction is the same as the axial direction of the bearing block 1, which is more convenient for installing the cooling pipe 4.

[0033] Embodiment 3:

[0034] like Figure 3 and Figure 4 As shown, the block bearing device for large and medium-sized motor bearings of this embodiment is different from Example 1 and Example 2 in the shape of the bearing block 1 and the layout shape of the cooling tube 4. Specifically, the bearing block 1 of this embodiment is a fan-shaped plate and can be used as a thrust bearing. The pipe grooves 2 and cooling tubes 4 inside the bearing block 1 are arranged in a divergent and circuitous manner, and the cooling tubes 4 are evenly arranged, which can greatly exert the cooling effect and help avoid excessive bearing temperature.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A block bearing device for large and medium-sized motor bearings, characterized in that: include: A bearing pad block (1), the bearing pad block (1) comprising at least two blocks, the bearing pad block (1) being detachably spliced ​​and connected to form a cylindrical shape, the bearing pad block (1) being provided with a circuitous tube groove (2), the two ends of the tube groove (2) being connected to the outer side of the bearing pad block (1); A cooling pipe (4), wherein the cooling pipe (4) is arranged in the pipe groove (2), and both ends of the cooling pipe (4) extend to the outside of the bearing block (1); A flow meter (5), the flow meter (5) comprising two flow meters, respectively connected to the two ends of the cooling pipe (4), and used for measuring the flow of liquid in the cooling pipe (4).

2. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: The tube groove (2) is opened on the inner side surface of the bearing block (1), and a fixing strip (7) is arranged on the tube groove (2). The fixing strip (7) is connected to both sides of the tube groove (2) in a spanning manner to limit the cooling tube (4) inside the tube groove (2).

3. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: A wear-resistant layer (3) is provided on the inner side wall of the bearing block (1), and the wear-resistant layer (3) is made of babbitt alloy material.

4. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: The winding direction of the cooling pipe (4) is in the same direction as the axial direction or the circumferential direction of the bearing block (1).

5. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: A connecting hole (6) is provided on the side of the bearing block (1), and a fixing bolt (8) for fixing is provided on the connecting hole (6).

6. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: The bearing block (1) is in the shape of an arc plate, and the tube groove (2) and the cooling tube (4) are arranged in parallel and in a circuitous manner.

7. The block bearing device for large and medium-sized motor bearings according to claim 1 is characterized in that: The bearing block (1) is in the shape of a fan-shaped plate, and the tube groove (2) and the cooling tube (4) are arranged in a divergent and circuitous manner.

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