Water cooling device of motor bearing

Abstract

The invention relates to the technical field of motor bearings, in particular to a motor bearing water cooling device which comprises an outer oil cover, the outer surface of the outer oil cover is modified into a smooth plane, and the motor bearing water cooling device is characterized in that the water cooling device can be tightly attached to the outer surface of the outer oil cover; a cooling water path is arranged in the water cooling device and is composed of a plurality of concentric circles, and the concentric circles are arranged along the same central axis and have different radiuses, so that the contact area of cooling liquid and the outer oil cover is increased, and the cooling efficiency is improved. The beneficial effects of the invention are that through the elaborate design of the cooling water path, the cooling liquid can be uniformly distributed in the whole cooling path, and the contact area with the outer surface of the motor bearing is increased, so that the heat dissipation efficiency is effectively improved, the highest shaft temperature is limited below 70 DEG C, and the service life is prolonged. Therefore, the motor can maintain a low working temperature under a high-load working condition, the service life of the motor is prolonged, and the reliability of the motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor bearings, in particular to a water cooling device for a motor bearing. Background Art

[0002] Under the background of global warming, extreme weather events occur frequently, especially the significant increase in summer temperature, which brings unprecedented challenges to the stable operation of power systems. In order to meet the surge in power demand during the peak summer period, large-scale generators must maintain efficient and stable operation. However, in such a high temperature environment, key equipment of power plants such as blower motors and slurry circulation pump motors face severe tests.

[0003] These devices usually work in a harsh environment, with high temperatures and dust, humidity and other unfavorable factors. In particular, high temperatures will accelerate the aging of lubricants, causing lubricant performance to deteriorate, which in turn causes increased bearing wear. In addition, high temperatures will shorten the service life of motor insulation materials and increase the risk of electrical failures. These situations will lead to increased maintenance costs and increase the probability of equipment failure, thus threatening the safety and stability of the entire power generation system. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] The object of the present invention is to provide a water cooling device for a motor bearing.

[0006] Therefore, its purpose is to solve the problem that high temperature will accelerate the aging of lubricating oil, thereby causing increased bearing wear.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a water cooling device for a motor bearing, comprising an outer oil cover, the outer surface of the outer oil cover is modified into a smooth plane, and is characterized in that: the water cooling device can be tightly installed on the outer surface of the outer oil cover; a cooling water path is provided inside the water cooling device, and the cooling water path is composed of multiple concentric circles, which are arranged along the same central axis and have different radii to increase the contact area between the coolant and the outer oil cover and improve the cooling efficiency.

[0008] As a preferred solution of the water cooling device for the motor bearing of the present invention, wherein: the water cooling device axis is the center, and the first to fifth concentric circles (C1-C5) are arranged from the inside to the outside in sequence, wherein the radii of the first to fifth concentric circles are R1, R2, R3, R4, R5 respectively, and satisfy the relationship: R1 <R2<R3<R4<R5。

[0009] As a preferred solution of the water cooling device for the motor bearing of the present invention, a plurality of concentric circles are arranged on the second concentric circle C2 at an angle of 45°, and the radii thereof are respectively R9.64 and R35.14.

[0010] As a preferred solution of the water cooling device for the motor bearing of the present invention, a plurality of concentric circles are arranged on the third concentric circle C3 at an angle of 45°, and the radii thereof are R15 and R40.5 respectively.

[0011] As a preferred solution of the water cooling device for the motor bearing of the present invention, the annular concentric circle space between the second concentric circle C2 and the third concentric circle C3 constitutes a part of the cooling water circuit.

[0012] As a preferred solution of the water cooling device for the motor bearing of the present invention, the inlet and outlet of the cooling water circuit are respectively arranged on the second concentric circle C2 and the third concentric circle C3, and the positions of the inlet and outlet are arranged relatively.

[0013] As a preferred solution of the water cooling device for the motor bearing of the present invention, the coolant in the cooling water circuit can flow along concentric circles of different levels.

[0014] As a preferred solution of the water cooling device for the motor bearing of the present invention, eight fixing bolt holes with a diameter of R14 are arranged at 45° intervals on the fourth concentric circle C4.

[0015] As a preferred solution of the water cooling device for the motor bearing of the present invention, the centers of the fixing bolt holes are located on the fourth concentric circle C4 and are evenly distributed along the circumference of the fourth concentric circle.

[0016] As a preferred solution of the water cooling device for the motor bearing of the present invention, the position of the fixing bolt hole corresponds to the preset hole position on the outer oil cover, so that the water cooling device can be firmly fixed on the outer oil cover of the motor bearing.

[0017] The beneficial effects of the water cooling device for the motor bearing of the present invention are as follows: through the careful design of the cooling water circuit, the coolant can be evenly distributed in the entire cooling path, increasing the contact area with the outer surface of the motor bearing, thereby effectively improving the heat dissipation efficiency and limiting the maximum shaft temperature to below 70°C, which means that the motor can maintain a low operating temperature under high-load working conditions, thereby extending the life of the motor and improving its reliability.

[0018] The standardized design of the fixing bolt holes makes the water cooling device easy to install and remove, which facilitates daily maintenance and inspection work. In addition, due to the modular design, if the water cooling device needs to be upgraded or replaced in the future, it can also be easily achieved, reducing downtime and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a schematic cross-sectional structure diagram of the water cooling device for the motor bearing in the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the water cooling devices C1 to C5 of the motor bearings in the present invention.

[0022] Figure 3 The first circuit diagram of the water cooling device for the motor bearing of the present invention is installed on the motor of the blower.

[0023] Figure 4 The water cooling device for the motor bearing of the present invention is installed in the second circuit diagram of the blower motor.

[0024] Figure 5 The water cooling device for the motor bearing in the present invention is installed in the circuit diagram of the slurry circulation pump motor.

[0025] In the figure:

[0026] 100. Water cooling device; 101. Cooling water channel; 102. Inlet; 103. Outlet; 104. Fixing bolt hole. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 1-5 , is the first embodiment of the present invention, which provides a water cooling device for a motor bearing, including an outer oil cover, the outer surface of the outer oil cover is modified into a smooth plane, so that the water cooling device 100 can be tightly installed on the outer surface of the outer oil cover; a cooling water path 101 is provided inside the water cooling device 100, and the cooling water path 101 is composed of a plurality of concentric circles, which are arranged along the same central axis and have different radii to increase the contact area between the coolant and the outer oil cover and improve the cooling efficiency.

[0032] This embodiment mainly solves the problem of motor overheating in high temperature seasons by changing the traditional fan air cooling method and introducing water cooling technology. Specifically, a more effective cooling effect is achieved by designing and manufacturing a water cooling device 100 suitable for the blower and the slurry circulation pump motor, and a matching cooling water circuit 101.

[0033] First, the outer oil cover in the traditional motor is subjected to surface modification. The traditional outer oil cover may have convexities or concave depressions, which will affect the fit of the water cooling device 100 therewith, resulting in reduced heat conduction efficiency. Therefore, the outer surface of the outer oil cover is modified into a smooth plane. This improvement allows the water cooling device 100 to be directly installed on the outer oil cover without gaps, thereby ensuring good thermal contact.

[0034] The cooling water channel 101 is composed of a plurality of concentric circles arranged along the same central axis and having different radii. Such a design allows the coolant to flow between various levels, thereby increasing the contact area between the coolant and the outer oil cover.

[0035] This design can significantly improve cooling efficiency by increasing the contact area between the coolant and the outer oil cover. The coolant can take away heat over a larger area, thereby reducing the temperature of the bearing and extending the service life of the bearing.

[0036] More efficient cooling means less coolant can be used to achieve the same cooling effect, which indirectly reduces energy consumption.

[0037] Example 2

[0038] Reference Figure 1-5, which is the second embodiment of the present invention. Different from the previous embodiment, taking the axis of the water cooling device (100) as the center, the first to fifth concentric circles (C1 - C5) are arranged in sequence from the inside to the outside. The radii of the first to fifth concentric circles are R1, R2, R3, R4, and R5 respectively, and satisfy the relational expression: R1 < R2 < R3 < R4 < R5. On the second concentric circle C2, multiple concentric circles are arranged at 45° angular intervals, and their radii are R9.64 and R35.14 respectively. On the third concentric circle C3, multiple concentric circles are arranged at 45° angular intervals, and their radii are R15 and R40.5 respectively. The annular concentric circle space between the second concentric circle C2 and the third concentric circle C3 constitutes a part of the cooling water path 101. The coolant in the cooling water path 101 can flow along concentric circles of different levels, increasing the heat exchange area.

[0039] In this embodiment, taking the axis of the water cooling device 100 as the center, a reference point is set. Starting from this center point, five concentric circles (denoted as C1 to C5) are drawn around, and their radii are R1, R2, R3, R4, and R5 in sequence, and satisfy the relational expression: R1 < R2 < R3 < R4 < R5, as Figure 2 shown, R1 - R77.5 < R2 - R124.78 < R3 - R138.5 < R4 - R175 < R5 - R188. These five concentric circles represent different levels of the cooling water path 101, gradually expanding from the inside to the outside, forming a progressive structure, which is beneficial to the uniform distribution of the coolant.

[0040] At the same time, this structure also simplifies the complexity of the cooling water path 101, making the manufacturing simpler and the cost lower.

[0041] Secondly, on the second concentric circle C2, multiple concentric circles are arranged at 45° angular intervals, and their radii are R9.64 and R35.14 respectively; on the third concentric circle C3, multiple concentric circles are arranged at the same 45° angular intervals, and their radii are R15 and R40.5 respectively; the annular concentric circle space between C2 and C3 constitutes a part of the cooling water path 101. The coolant can flow in this area and increase the heat exchange area by contacting concentric circles of different levels. This not only increases the contact area between the coolant and the outer oil cover but also improves the heat exchange efficiency. Since the coolant can be evenly distributed at each level, it can absorb heat more effectively, reducing the risk of local overheating.

[0042] In a traditional cooling system, hot spots may form in some areas due to uneven distribution of the coolant. However, in the cooling water path 101 of the present invention, the coolant can evenly cover the entire cooling surface, effectively preventing the occurrence of hot spot phenomena and ensuring the temperature uniformity of the entire system.

[0043] Since the present invention can more effectively control the temperature, it avoids equipment damage caused by overheating, thereby extending the service life of mechanical equipment. At the same time, the uniform temperature distribution also helps to reduce mechanical wear and further improve the overall performance of the equipment.

[0044] In addition, the temperature probe of the blower motor bearing was transformed into an external form, so that temperature detection and adjustment can be carried out without disassembling the equipment, which greatly simplifies daily maintenance work. This design not only saves time, but also reduces the potential risks caused by frequent disassembly and assembly of the motor.

[0045] The cooling water pipe is connected to the water cooling device 100 using a hose connector, so that it can be quickly disconnected when maintenance is required without complicated tools or excessive time. This design is convenient for regular maintenance and also for quickly troubleshooting in an emergency.

[0046] Example 3

[0047] Reference Figure 1-5 , which is the third embodiment of the present invention, and this embodiment further provides a water cooling device for a motor bearing. The inlet 102 and the outlet 103 of the cooling water circuit 101 are respectively arranged on the second concentric circle C2 and the third concentric circle C3, and the positions of the inlet 102 and the outlet 103 are relatively arranged to ensure the uniform distribution of the coolant in the water circuit. Eight fixing bolt holes 104 with a diameter of R14 are arranged at 45° intervals on the fourth concentric circle C4. The center of the fixing bolt hole 104 is located on the fourth concentric circle C4, and is evenly distributed along the circumference of the fourth concentric circle. The position of the fixing bolt hole 104 corresponds to the preset hole position on the outer oil cover, so that the water cooling device 100 can be firmly fixed on the outer oil cover of the motor bearing.

[0048] The inlet 102 of the cooling water path 101 is arranged on the second concentric circle C2, and the outlet 103 is arranged on the third concentric circle C3. The inlet 102 and the outlet 103 are arranged opposite to each other, so that the coolant can be evenly distributed in the entire cooling path after entering the water path, thereby improving the cooling efficiency and reducing the local overheating problem caused by uneven coolant flow.

[0049] Eight fixing bolt holes 104 with a diameter of R14 are arranged on the fourth concentric circle C4, and these holes are distributed at 45° intervals to ensure their uniform distribution in the circumferential direction. The positions of the fixing bolt holes 104 match the preset hole positions on the outer oil cover of the motor bearing, so that the water cooling device 100 can be firmly installed on the outer oil cover, and it is easy to disassemble and maintain.

[0050] In order to ensure good thermal conductivity and corrosion resistance, the water cooling device 100 is usually made of a material with good thermal conductivity, such as copper or aluminum. In addition, the material needs to have a certain mechanical strength to withstand the pressure generated during the working process.

[0051] The water cooling device 100 can be processed by precision machining technology, such as CNC machining, to ensure the accuracy of the concentric circles and other key dimensions. For the fixing bolt hole 104, it is necessary to ensure that it accurately corresponds to the preset hole position on the outer oil cover to achieve rapid installation and removal.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0054] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A water cooling device for a motor bearing, comprising: The outer oil cover, the outer surface of which is modified into a smooth plane, is characterized in that: So that the water cooling device (100) can be installed closely on the outer surface of the outer oil cover; A cooling water channel (101) is provided inside the water cooling device (100). The cooling water channel (101) is composed of a plurality of concentric circles, which are arranged along the same central axis and have different radii to increase the contact area between the coolant and the outer oil cover.

2. The water cooling device for a motor bearing according to claim 1, characterized in that: The water cooling device (100) has a first to a fifth concentric circle (C1-C5) arranged in sequence from the inside to the outside, with the radii of the first to the fifth concentric circle being R1, R2, R3, R4, and R5, respectively, and satisfying the relationship: R1 <R2<R3<R4<R5。 3. The water cooling device for the motor bearing according to claim 2, characterized in that: A plurality of concentric circles are arranged on the second concentric circle C2 at an angle of 45°, and the radii thereof are respectively R9.64 and R35.

14.

4. The water cooling device for the motor bearing according to claim 3, characterized in that: A plurality of concentric circles are arranged on the third concentric circle C3 at an angular interval of 45°, and the radii thereof are R15 and R40.5 respectively.

5. The water cooling device for the motor bearing according to claim 4, characterized in that: The annular concentric circle space between the second concentric circle C2 and the third concentric circle C3 constitutes a part of the cooling water channel (101).

6. The water cooling device for the motor bearing according to claim 5, characterized in that: The inlet (102) and the outlet (103) of the cooling water channel (101) are respectively arranged on the second concentric circle C2 and the third concentric circle C3, and the positions of the inlet (102) and the outlet (103) are arranged relatively.

7. The water cooling device for the motor bearing according to claim 6, characterized in that: The coolant in the cooling water channel (101) can flow along concentric circles at different levels.

8. The water cooling device for a motor bearing according to claim 2, characterized in that: Eight fixing bolt holes (104) with a diameter of R14 are arranged at 45° intervals on the fourth concentric circle C4.

9. The water cooling device for a motor bearing according to claim 8, characterized in that: The centers of the fixing bolt holes (104) are located on the fourth concentric circle C4 and are evenly distributed along the circumference of the fourth concentric circle.

10. The water cooling device for a motor bearing according to claim 9, characterized in that: The position of the fixing bolt hole (104) corresponds to the preset hole position on the outer oil cover, so that the water cooling device (100) can be firmly fixed on the outer oil cover of the motor bearing.

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