Bearing seat cooling device and bearing seat
By setting up a cooling pipe group in the base and upper cover of the bearing seat and conducting thermal contact with the bearing seat, using coolant to exchange heat, the problem of high bearing temperature is solved, the cooling effect and efficiency are improved, and the service life of the bearing is extended.
Patent Information
- Application Number
- CN202422277064.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In coal mills in thermal power plants, due to the high-speed rotation of the transmission shaft and the large bearing load, the bearing temperature is relatively high, resulting in short grease life and intensified wear. The existing cooling method has poor effect, which affects the service life of the bearing.
A bearing seat cooling device is designed, and the bearing is further cooled by setting the first and second cooling pipe groups in the base and upper cover of the bearing seat, and making them in thermal contact with the bearing seat, and heat exchange is used for cooling liquid.
It improves the cooling effect and cooling efficiency of the bearing seat, extends the service life of the bearing, and reduces the difficulty of installation and processing of the cooling device.
Smart Images
Figure CN223035543U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of bearing seats, and particularly to a bearing seat cooling device and a bearing seat. Background Art
[0002] During the operation of the coal mill in a thermal power plant, due to the high-speed rotation of the transmission shaft and the large bearing load, the bearing temperature is generally on the high side. Since the life and lubrication effect of the grease are inversely proportional to the temperature, the higher the operating temperature, the shorter the life of the grease, and the failure of the grease will cause increased wear between the bearings.
[0003] In the related art, the bearings are mainly cooled by natural ventilation cooling or forced ventilation cooling by adding axial flow fans. However, the cooling effect of the above methods is poor. In summer, the ambient temperature is high, and the heat generated by the equipment operation cannot be effectively released, seriously affecting the service life of the bearings. Summary of the Utility Model
[0004] The purpose of the present disclosure is to provide a bearing seat cooling device and a bearing seat to solve the above technical problems.
[0005] To achieve the above purpose, as the first aspect of the present disclosure, a bearing seat cooling device is provided, including a first cooling pipe group and a second cooling pipe group. The first cooling pipe group is communicated with the second cooling pipe group. The coolant inlet of the first cooling pipe group is used for the coolant to flow in, and the coolant outlet of the second cooling pipe group is used for the coolant to flow out. The first cooling pipe group is adapted to be arranged in the bearing seat base and is adapted to be in thermal contact with the bearing seat base, and the second cooling pipe group is adapted to be arranged in the bearing seat upper cover and is adapted to be in thermal contact with the bearing seat upper cover.
[0006] Optionally, the first cooling pipe group includes two connected first cooling pipes, and the two first cooling pipes are respectively adapted to be arranged in different grooves of the bearing seat base.
[0007] The second cooling pipe group includes two connected second cooling pipes, and the two second cooling pipes are respectively adapted to be arranged in different arc-shaped grooves in the upper cover of the bearing seat. The bearing is adapted to be located between the two second cooling pipes.
[0008] Optionally, the first cooling pipe includes a connected first pipe section, two second pipe sections and a plurality of arc-shaped sections. The arc-shaped sections are connected between the adjacent first pipe section and the second pipe sections. The first pipe section is located between the two second pipe sections. The first pipe section, the two second pipe sections and the plurality of arc-shaped sections are all adapted to be arranged in contact with the inner wall of the groove.
[0009] Optionally, the second cooling pipe includes a first pipe and a second pipe arranged in parallel. The inlets of the first pipe and the second pipe are both connected to the coolant outlet of the first cooling pipe group, and the first pipe and the second pipe are adapted to be arranged in the same arc-shaped groove.
[0010] Optionally, the bearing housing cooling device further includes a first external pipeline and a second external pipeline. Both the first external pipeline and the second external pipeline are located outside the housing of the bearing housing. Two ends of the first external pipeline are respectively connected to different first cooling pipes, and two ends of the second external pipeline are respectively communicated with two different second cooling pipes.
[0011] Optionally, the bearing housing cooling device further includes an adapter. The adapter is located inside the housing of the bearing housing. A cavity is formed inside the adapter, and a first transfer port and a second transfer port are formed on the adapter. Both the first transfer port and the second transfer port are communicated with the cavity.
[0012] The first transfer port is communicated with the first external pipeline or the second external pipeline, and the second transfer port is communicated with the first cooling pipe or the second cooling pipe.
[0013] Optionally, the bearing housing cooling device further includes a heat-conducting filling member. The heat-conducting filling member is adapted to be filled in the groove of the bearing housing base and the gap between the bearing housing upper cover and the bearing. Both the first cooling pipe group and the second cooling pipe group are wrapped in the heat-conducting filling member.
[0014] Optionally, the heat-conducting filling member is made of metallic zinc.
[0015] Optionally, the bearing housing cooling device further includes a flow control valve. The flow control valve is arranged at the coolant inlet of the first cooling pipe group.
[0016] As a second aspect of the present disclosure, the present disclosure provides a bearing housing, including a bearing housing upper cover, a bearing housing base, and the above-mentioned bearing housing cooling device. The bearing housing upper cover and the bearing housing base are combined to form an installation cavity for installing a bearing. The first cooling pipe group is arranged inside the bearing housing base, and the second cooling pipe group is arranged inside the bearing housing upper cover.
[0017] Through the above technical solution, cooling pipe groups are respectively arranged in the upper cover of the bearing housing and the base of the bearing housing, and the first cooling pipe group is in thermally conductive contact with the base of the bearing housing, and the second cooling pipe group is in thermally conductive contact with the upper cover of the bearing housing, so that the coolant in the cooling pipe group exchanges heat with the bearing housing, and further cools the bearing installed in the bearing housing. The cooling method using the coolant makes the cooling effect of the bearing housing better and the cooling efficiency higher. Moreover, since the first cooling pipe group and the second cooling pipe group are arranged in the existing space of the bearing housing, there is no need to separately set up a space for installing the cooling device, further reducing the installation and processing difficulty of the bearing housing cooling device.
[0018] Other features and advantages of the present disclosure will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0020] Figure 1 is a perspective view of the base of the bearing housing provided by an embodiment of the present disclosure;
[0021] Figure 2 is Figure 1 an enlarged view of part A in
[0022] Figure 3 is a perspective view of the upper cover of the bearing housing provided by an embodiment of the present disclosure;
[0023] Figure 4 is Figure 3 an enlarged view of part B in
[0024] Figure 5 is a perspective view of the base of the bearing housing provided by an embodiment of the present disclosure, in which a thermally conductive filler is shown;
[0025] Figure 6 is a perspective view of the upper cover of the bearing housing provided by an embodiment of the present disclosure, in which a thermally conductive filler is shown;
[0026] Figure 7 is a perspective view of the bearing housing provided by an embodiment of the present disclosure.
[0027] DESCRIPTION OF THE REFERENCE NUMERALS
[0028] 100 - Bearing housing; 1 - First cooling pipe group; 11 - First cooling pipe; 111 - First pipe section; 112 - Second pipe section; 113 - Arc section; 2 - Second cooling pipe group; 21 - Second cooling pipe; 211 - First pipe; 212 - Second pipe; 3 - Bearing housing base; 31 - Groove; 4 - Bearing housing upper cover; 41 - Arc groove; 5 - First external pipeline; 6 - Second external pipeline; 7 - Third external pipeline; 8 - Adapter; 9 - Heat - conducting filling piece. Detailed implementation manners
[0029] The following will describe the detailed implementation manners of the present disclosure in conjunction with the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure.
[0030] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" are usually defined in the state when the bearing housing is working normally. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation of the present disclosure. "Inner" and "outer" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.
[0031] In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connected", "linked", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0032] As the first aspect of the present disclosure, as Figures 1 to 7 shown, the present disclosure provides a bearing housing cooling device, including a first cooling pipe group 1 and a second cooling pipe group 2. The first cooling pipe group 1 is communicated with the second cooling pipe group 2. The coolant inlet of the first cooling pipe group 1 is used for the coolant to flow in, and the coolant outlet of the second cooling pipe group 2 is used for the coolant to flow out. The first cooling pipe group 1 is adapted to be arranged in the bearing housing base 3 and is adapted to be in heat - conducting contact with the bearing housing base 3. The second cooling pipe group 2 is adapted to be arranged in the bearing housing upper cover 4 and is adapted to be in heat - conducting contact with the bearing housing upper cover 4.
[0033] Through the above technical solution, cooling pipe groups are respectively arranged in the bearing housing upper cover 4 and the bearing housing base 3, and the first cooling pipe group 1 is in thermally conductive contact with the bearing housing base 3, and the second cooling pipe group 2 is in thermally conductive contact with the bearing housing upper cover 4, so that the coolant in the cooling pipe group exchanges heat with the bearing housing 100, further cooling the bearing installed in the bearing housing 100. The cooling method using the coolant makes the cooling effect of the bearing housing 100 better and the cooling efficiency higher. Moreover, since the first cooling pipe group 1 and the second cooling pipe group 2 are arranged in the existing space of the bearing housing 100, there is no need to separately set up a space for installing the cooling device, further reducing the installation and processing difficulty of the bearing housing cooling device.
[0034] To improve the cooling effect, optionally, as Figure 1 shown, the first cooling pipe group 1 includes two connected first cooling pipes 11, and the two first cooling pipes 11 are respectively adapted to be arranged in different grooves 31 of the bearing housing base 3; the second cooling pipe group 2 includes two connected second cooling pipes 21, and the two second cooling pipes 21 are respectively adapted to be arranged in different arc-shaped grooves 41 in the bearing housing upper cover 4, and the bearing is adapted to be located between the two second cooling pipes 21. The two first cooling pipes 11 are respectively arranged in different grooves 31 of the bearing housing base 3, which can make full use of the space in the bearing housing base 3, increase the number of cooling pipes arranged in the bearing housing 100, and thus improve the cooling effect on the bearing housing 100.
[0035] And by arranging the two second cooling pipes 21 in different arc-shaped grooves 41 in the bearing housing upper cover 4 and clamping the bearing between the two second cooling pipes 21, on the one hand, it can make full use of the space in the bearing housing upper cover 4 to increase the number of cooling pipes; on the other hand, clamping the bearing between the two second cooling pipes 21 can make the bearing directly contact with the second cooling pipes 21, improving the cooling effect of the second cooling pipes 21 on the bearing.
[0036] Optionally, as Figure 2 shown, the first cooling pipe 11 includes a connected first pipe section 111, two second pipe sections 112 and a plurality of arc-shaped sections 113. Arc-shaped sections 113 are connected between the adjacent first pipe section 111 and the second pipe sections 112. The first pipe section 111 is located between the two second pipe sections 112, and the first pipe section 111, the two second pipe sections 112 and the plurality of arc-shaped sections 113 are all adapted to be arranged in close fit with the inner wall of the groove 31. In order to adapt to the shape of the groove 31 of the bearing housing base 3, so as to arrange a longer cooling pipeline in the groove 31, through the cooperation between the first pipe section 111, the second pipe sections 112 and the arc-shaped sections 113, the first cooling pipe 11 can fill the irregular groove 31, enabling more cooling pipelines to be in close fit with the inner wall of the groove 31, and further improving the cooling effect of the first cooling pipe 11 on the bearing housing base 3.
[0037] Optionally, as Figure 3 and Figure 4 shown, the second cooling pipe 21 includes a first pipe 211 and a second pipe 212 arranged in parallel. The inlets of the first pipe 211 and the second pipe 212 are both connected to the coolant outlet of the first cooling pipe group 1. The first pipe 211 and the second pipe 212 are adapted to be arranged in the same arc-shaped groove 41. Arranging the parallel first pipe 211 and second pipe 212 in the same arc-shaped groove 41 can increase the amount of coolant flowing through the same arc-shaped groove 41, thereby improving the cooling effect.
[0038] For the embodiment where the bearing is clamped between two arc-shaped grooves 41, the parallel first pipe 211 and second pipe 212 are arranged in both of the two different arc-shaped grooves 41. In this way, the amount of coolant flowing through both sides of the bearing can be further increased, thereby improving the cooling effect on the bearing.
[0039] In order to connect two first cooling pipes 11 or second cooling pipes 21 at different positions of the bearing housing 100, optionally, as Figure 7 shown, the bearing housing cooling device further includes a first external pipeline 5 and a second external pipeline 6. Both the first external pipeline 5 and the second external pipeline 6 are located outside the housing of the bearing housing 100. The two ends of the first external pipeline 5 are respectively connected to different first cooling pipes 11, and the two ends of the second external pipeline 6 are respectively communicated with two different second cooling pipes 21. Since the two first cooling pipes 11 are respectively arranged in different grooves 31 of the bearing housing base 3, and the two second cooling pipes 21 are respectively arranged in different arc-shaped grooves 41 in the bearing housing upper cover 4. By connecting the two first cooling pipes 11 through the first external pipeline 5 and connecting the two second cooling pipes 21 through the second external pipeline 6, the two first cooling pipes 11 can form the first cooling pipe group 1, and the two second cooling pipes 21 can form the second cooling pipe group 2. The coolant can flow through different first cooling pipes 11 and second cooling pipes 21 at one time through the first external pipeline 5 and the second external pipeline 6, improving the utilization rate of the coolant.
[0040] Optionally, as Figure 7 shown, the bearing housing cooling device may further include a third external pipeline 7. The two ends of the third external pipeline 7 are respectively communicated with the first cooling pipe 11 and the second cooling pipe 21. The third external pipeline 7 can communicate the first cooling pipe group 1 and the second cooling pipe group 2, thereby forming a coolant flow path that enters from the inlet of one of the first cooling pipe group 1 or the second cooling pipe group 2, flows through the connected first cooling pipe group 1 or the second cooling pipe group 2, and then discharges from the outlet of one of the first cooling pipe group 1 or the second cooling pipe group 2, improving the integration degree of the cooling device.
[0041] In order to improve the sealing degree of the cooling device, optionally, as Figures 1 to 4As shown, the bearing housing cooling device further includes an adapter 8. The adapter 8 is located inside the housing of the bearing housing 100. A cavity is formed inside the adapter 8. A first transfer port and a second transfer port are formed on the adapter 8. Both the first transfer port and the second transfer port communicate with the cavity. The first transfer port communicates with the first external pipeline 5 or the second external pipeline 6, and the second transfer port communicates with the first cooling pipe 11 or the second cooling pipe 21. Since the pipe diameters and materials of the first external pipeline 5, the second external pipeline 6, the first cooling pipe 11, and the second cooling pipe 21 are all different, in order to prevent coolant leakage at the pipeline connection, the adapter 8 is provided and different pipelines are connected through the adapter 8. While connecting different pipelines, it can ensure that the coolant does not leak, thereby ensuring the normal operation of the bearing inside the bearing housing 100.
[0042] Optionally, internal threads can be formed inside the first transfer port, and external threads that match the internal threads of the first transfer port are formed at the interfaces of the first external pipeline 5 and the second external pipeline 6; the ports of the first cooling pipe 11 and the second cooling pipe 21 are welded to the second transfer port. The threaded connection between the first external pipeline 5 and the second external pipeline 6 and the adapter 8 is conducive to the disassembly and maintenance of the pipeline. And since the first cooling pipe 11, the second cooling pipe 21, and the adapter 8 are all located inside the housing of the bearing housing 100, the welding connection method can further improve the sealing effect and prevent coolant leakage at the connection.
[0043] Optionally, the adapter 8, the first cooling pipe 11, and the second cooling pipe 21 can be made of copper. Since the thermal conductivity coefficient of metallic copper is relatively high, using copper-made adapter 8, first cooling pipe 11, and second cooling pipe 21 can improve the heat exchange efficiency between the coolant and the bearing housing 100 and enhance the cooling effect.
[0044] To improve the heat exchange effect, optionally, as Figure 5 and Figure 6 shown, the bearing housing cooling device further includes a heat-conducting filler 9. The heat-conducting filler 9 is suitable for filling in the groove 31 of the bearing housing base 3 and the gap between the bearing housing upper cover 4 and the bearing. Both the first cooling pipe group 1 and the second cooling pipe group 2 are wrapped inside the heat-conducting filler 9. Since the first cooling pipe group 1 and the second cooling pipe group 2 cannot completely contact the inner wall of the groove 31 of the bearing housing base 3 or the inner wall of the bearing housing upper cover 4, by providing the heat-conducting filler 9, the heat conduction in the form of heat radiation can be changed into contact heat conduction through the heat-conducting filler 9, further improving the heat conduction efficiency and enhancing the cooling effect.
[0045] The present disclosure does not limit the specific material of the heat-conducting filler 9. For example, it can be one of copper, aluminum, and zinc. In an embodiment provided by the present disclosure, the heat-conducting filler 9 is made of metallic zinc.
[0046] Optionally, the bearing housing cooling device further includes a flow control valve, which is arranged at the coolant inlet of the first cooling pipe group 1. Since the first cooling pipe group 1 and the second cooling pipe group 2 can be connected through the third external pipeline 7, setting a flow control valve at the coolant inlet of the first cooling pipe group 1 can control the amount of coolant entering the first cooling pipe group 1 and the second cooling pipe group 2, so as to adjust the cooling power according to the external temperature. For example, in summer, since the external temperature is relatively high, the flow rate of the coolant can be increased to obtain a better cooling effect, while in winter, since the external temperature is low, the amount of coolant can be reduced to reduce the power consumption of the cooling device.
[0047] As a second aspect of the present disclosure, as Figure 7 shown, the present disclosure provides a bearing housing 100, which includes a bearing housing upper cover 4, a bearing housing base 3, and the above-mentioned bearing housing cooling device. The bearing housing upper cover 4 and the bearing housing base 3 are combined to form an installation cavity for installing a bearing. The first cooling pipe group 1 is arranged in the bearing housing base 3, and the second cooling pipe group 2 is arranged in the bearing housing upper cover 4.
[0048] Wherein, a groove 31 is formed on the bottom surface of the bearing housing base 3, the first cooling pipe group 1 is located in the groove 31, an arc-shaped groove 41 is formed in the bearing housing upper cover 4, and the second cooling pipe group 2 is located in the arc-shaped groove 41.
[0049] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0050] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0051] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.
Claims
1. A bearing seat cooling device, characterized in that: It comprises a first cooling tube group and a second cooling tube group, the first cooling tube group is connected with the second cooling tube group, the coolant inlet of the first cooling tube group is used for coolant inflow, the coolant outlet of the second cooling tube group is used for coolant outflow, the first cooling tube group is suitable for being arranged in the bearing seat base and suitable for thermal contact with the bearing seat base, the second cooling tube group is suitable for being arranged in the bearing seat upper cover and suitable for thermal contact with the bearing seat upper cover.
2. The bearing seat cooling device according to claim 1, characterized in that: The first cooling tube group includes two connected first cooling tubes, and the two first cooling tubes are respectively suitable for being arranged in different grooves of the bearing seat base. The second cooling tube group includes two connected second cooling tubes, the two second cooling tubes are respectively suitable for being arranged in different arc grooves in the upper cover of the bearing seat, and the bearing is suitable for being located between the two second cooling tubes.
3. The bearing seat cooling device according to claim 2, characterized in that: The first cooling pipe includes a connected first pipe segment, two second pipe segments and multiple arc segments, the arc segments are connected between adjacent first pipe segments and second pipe segments, the first pipe segment is located between the two second pipe segments, and the first pipe segment, the two second pipe segments and the multiple arc segments are all suitable for fitting against the inner wall of the groove.
4. The bearing seat cooling device according to claim 2, characterized in that: The second cooling tube includes a first tube and a second tube arranged in parallel, the inlets of the first tube and the second tube are both connected to the coolant outlet of the first cooling tube group, and the first tube and the second tube are suitable for being arranged in the same arc groove.
5. The bearing seat cooling device according to claim 2, characterized in that: The bearing seat cooling device also includes a first external pipe and a second external pipe, both of which are located outside the shell of the bearing seat, and the two ends of the first external pipe are respectively connected to different first cooling pipes, and the two ends of the second external pipe are respectively connected to two different second cooling pipes.
6. The bearing seat cooling device according to claim 5, characterized in that: The bearing seat cooling device further comprises an adapter, the adapter is located in the housing of the bearing seat, a cavity is formed in the adapter, a first adapter interface and a second adapter interface are formed on the adapter, the first adapter interface and the second adapter interface are both connected to the cavity, The first adapter is in communication with the first external pipe or the second external pipe, and the second adapter is in communication with the first cooling pipe or the second cooling pipe.
7. The bearing seat cooling device according to any one of claims 1 to 6, characterized in that: The bearing seat cooling device also includes a heat-conductive filling piece, which is suitable for filling the groove of the bearing seat base and the gap between the bearing seat cover and the bearing, and the first cooling tube group and the second cooling tube group are both wrapped in the heat-conductive filling piece.
8. The bearing seat cooling device according to claim 7, characterized in that: The heat-conducting filling piece is made of metal zinc.
9. The bearing seat cooling device according to any one of claims 1 to 6, characterized in that: The bearing seat cooling device also includes a flow control valve, which is arranged at the coolant inlet of the first cooling tube group.
10. A bearing seat, characterized in that: It includes a bearing seat upper cover, a bearing seat base and a bearing seat cooling device according to any one of claims 1 to 9, the bearing seat upper cover and the bearing seat base are matched to form an installation cavity, the installation cavity is used to install the bearing, the first cooling tube group is arranged in the bearing seat base, and the second cooling tube group is arranged in the bearing seat upper cover.