Bearing heat dissipation ring and bearing box

Abstract

The utility model discloses a bearing heat dissipation ring and a bearing box, and relates to the technical field of bearings, two ends of the bearing heat dissipation ring are respectively provided with an inner contact end face and an outer contact end face, the bearing heat dissipation ring is provided with a mounting hole, the mounting hole is communicated with the inner contact end face and the outer contact end face, and the outer contact end face is provided with a first ring groove. And heat dissipation holes are formed in the side wall of the first ring groove and communicate with the first ring groove and the peripheral wall of the bearing heat dissipation ring. According to the technical scheme provided by the utility model, due to the rotation of the bearing heat dissipation ring, the air velocity in the first ring groove is increased. According to the Bernoulli principle, an increase in flow rate results in a decrease in pressure within the first annular groove. At the moment, the pressure of air outside the grooves is relatively high, so that the air is pushed into the grooves with relatively low pressure, due to rotation of the bearing heat dissipation ring, the air in the first ring groove can also generate centrifugal force, the centrifugal force is discharged along the heat dissipation holes annularly formed in the outer side wall of the first ring groove, and meanwhile, high temperature in the bearing chamber is taken away, so that the temperature of the bearing box is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bearing heat dissipation ring and a bearing box. Background Art

[0002] The closed water system, water supply system and coal mill system of large-scale generator sets all use high-voltage motors, which are installed in the steam engine room and coal mill area respectively. The working environment temperature is high, especially during summer operation. The increase in ambient temperature causes the bearing temperature on the load side of the motor to often run at a higher temperature. The general operating temperature is 70℃-80℃. The high bearing temperature will cause the grease to deteriorate, seriously affecting the normal service life of the bearing, and even frequently cause high temperature alarms or overtemperatures to force the equipment to shut down, reduce the unit output, or lose standby, posing a major safety hazard and seriously affecting the safe and stable operation of the equipment.

[0003] At present, in order to reduce the bearing temperature, temporary axial flow fans are often installed near the motor to cool the bearings. This method is not standardized and is prone to wiring problems that do not meet on-site management requirements, while increasing energy consumption. Utility Model Content

[0004] The main purpose of the utility model is to provide a bearing heat dissipation ring and a bearing box, aiming to provide a bearing heat dissipation ring which can improve the heat dissipation capacity of the bearing box.

[0005] To achieve the above-mentioned purpose, the bearing heat dissipation ring proposed in the utility model is applied to the bearing box, and the two ends of the bearing heat dissipation ring are respectively formed with an inner contact end face and an outer contact end face, and the bearing heat dissipation ring is formed with a mounting hole, and the mounting hole connects the inner contact end face and the outer contact end face, and the outer contact end face is formed with a first ring groove, and the side wall of the first ring groove is provided with a heat dissipation hole, and the heat dissipation hole connects the first ring groove and the outer peripheral wall of the bearing heat dissipation ring.

[0006] In one embodiment, an inclined air guiding surface is provided on a side of the first annular groove close to the heat dissipation hole, and the inclined air guiding surface is inclined toward the groove bottom wall of the first annular groove.

[0007] In one embodiment, the bearing heat dissipation ring is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes are evenly spaced and arranged in a ring on the bearing heat dissipation ring.

[0008] In one embodiment, the bearing heat dissipation ring further includes a first annular sealing portion, and the first annular sealing portion is disposed on the inner contact end surface.

[0009] In one embodiment, the bearing heat dissipation ring further includes a second annular sealing portion, which is disposed on the inner contact end surface and located on a side of the first annular sealing portion facing the mounting hole.

[0010] In one embodiment, a second annular groove is formed between the first annular sealing portion and the second annular sealing portion, and the bearing heat dissipation ring further includes an annular sealing ring, which is disposed in the second annular groove.

[0011] In one embodiment, the bearing heat dissipation ring is an integrally formed structure.

[0012] The utility model also provides a bearing box, comprising:

[0013] A box body, one end of which is provided with a bearing end cover, and the bearing end cover is provided with a bearing chamber with an opening;

[0014] Bearing cooling rings; and

[0015] A rotating shaft is rotatably arranged on the box body, one end of the rotating shaft is exposed at the opening, and the bearing heat dissipation ring sleeve is arranged on the rotating shaft and can rotate together with the rotating shaft.

[0016] In one embodiment, the bearing end cover is provided with fixing bolts, and the bearing end cover is threadedly connected to the housing through the fixing bolts.

[0017] In one embodiment, the inner diameter of the mounting hole of the bearing heat dissipation ring is d1, the outer diameter of the rotating shaft is d2, and d1≤d2.

[0018] In the technical solution of the utility model, a bearing heat dissipation ring and a bearing box are proposed, wherein the two ends of the bearing heat dissipation ring are respectively formed with an inner contact end face and an outer contact end face, the bearing heat dissipation ring is formed with a mounting hole, the mounting hole connects the inner contact end face and the outer contact end face, the outer contact end face is formed with a first ring groove, the side wall of the first ring groove is provided with a heat dissipation hole, and the heat dissipation hole connects the first ring groove and the outer peripheral wall of the bearing heat dissipation ring. When the shaft in the bearing box rotates, the bearing heat dissipation ring will rotate therewith due to being fixedly sleeved on the shaft, and when the bearing heat dissipation ring rotates, the air in the first ring groove is forced to move with the bearing heat dissipation ring. Due to the rotation of the bearing heat dissipation ring, the air flow rate in the first ring groove increases. According to Bernoulli's principle, the increase in flow rate leads to a decrease in pressure in the first ring groove. At this time, the air pressure outside the groove is relatively high, so the air is pushed into the groove with lower pressure, and then enters the first ring groove. Due to the rotation of the bearing heat dissipation ring, the air in the first ring groove will also generate centrifugal force and be discharged along the heat dissipation holes arranged on the outer wall of the first ring groove. The high-speed flowing air will exchange heat with the bearing chamber, thereby taking away the high temperature in the bearing chamber, realizing air cooling and heat dissipation, and effectively reducing the temperature of the bearing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A structural schematic diagram of an embodiment of a bearing heat dissipation ring provided by the utility model;

[0021] Figure 2 This is a structural schematic diagram of the bearing heat dissipation ring from another angle;

[0022] Figure 3 It is a cross-sectional view of the bearing cooling ring;

[0023] Figure 4 This is a structural schematic diagram of an embodiment of a bearing box provided by the utility model.

[0024] Description of Figure Numbers:

[0025] 100, bearing heat dissipation ring; 11, first annular groove; 111, inclined air guide surface; 12, heat dissipation hole; 13, first annular sealing portion; 14, second annular sealing portion; 1a, mounting hole; 1b, outer peripheral wall; 1c, second annular groove; 1d, outer contact end surface; 1e, inner contact end surface.

[0026] 1000, bearing box; 200, housing; 300, bearing end cover; 310, fixing bolt; 400, rotating shaft.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] The closed water system, water supply system and coal mill system of large-scale generator sets all use high-voltage motors, which are installed in the steam engine room and coal mill area respectively. The working environment temperature is high, especially during summer operation. The increase in ambient temperature causes the bearing temperature on the load side of the motor to often run at a higher temperature. The general operating temperature is 70℃-80℃. The high bearing temperature will cause the grease to deteriorate, seriously affecting the normal service life of the bearing, and even frequently cause high temperature alarms or overtemperatures to force the equipment to shut down, reduce the unit output, or lose standby, posing a major safety hazard and seriously affecting the safe and stable operation of the equipment.

[0032] At present, in order to reduce the bearing temperature, temporary axial flow fans are often installed near the motor to cool the bearings. This method is not standardized and is prone to wiring problems that do not meet on-site management requirements, while increasing energy consumption.

[0033] In order to solve the above problems, the utility model proposes a bearing heat dissipation ring, which aims to provide a bearing heat dissipation ring that can improve the heat dissipation capacity of the bearing box. Figures 1 to 4 The present invention is a structural schematic diagram of an embodiment of a bearing heat dissipation ring provided by the present invention.

[0034] Please refer to Figures 1 to 4 The utility model proposes a bearing heat dissipation ring 100, wherein an inner contact end face 1e and an outer contact end face 1d are respectively formed at both ends of the bearing heat dissipation ring 100, and a mounting hole 1a is formed on the bearing heat dissipation ring 100, wherein the mounting hole 1a connects the inner contact end face 1e and the outer contact end face 1d, and a first annular groove 11 is formed on the outer contact end face 1d, and a heat dissipation hole 12 is provided on the side wall of the first annular groove 11, and the heat dissipation hole 12 connects the first annular groove 11 and the outer peripheral wall 1b of the bearing heat dissipation ring 100.

[0035] In the technical solution of the utility model, a bearing heat dissipation ring 100 and a bearing box 1000 are proposed, wherein the two ends of the bearing heat dissipation ring 100 are respectively formed with an inner contact end face 1e and an outer contact end face 1d, the bearing heat dissipation ring 100 is formed with a mounting hole 1a, the mounting hole 1a is connected with the inner contact end face 1e and the outer contact end face 1d, the outer contact end face 1d is formed with a first ring groove 11, the side wall of the first ring groove 11 is provided with a heat dissipation hole 12, and the heat dissipation hole 12 is connected with the first ring groove 11 and the outer peripheral wall 1b of the bearing heat dissipation ring 100. When the rotating shaft 400 in the bearing box 1000 rotates, the bearing heat dissipation ring 100 will rotate with it because it is fixedly sleeved on the rotating shaft 400. When the bearing heat dissipation ring 100 rotates, the air in the first ring groove 11 is forced to move with the bearing heat dissipation ring 100. Due to the rotation of the bearing heat dissipation ring 100, the air flow rate in the first ring groove 11 increases. According to the Bernoulli principle, the increase in flow rate leads to a decrease in pressure in the first ring groove 11. At this time, the air pressure outside the groove is relatively high, so the air is pushed into the groove with lower pressure, and then enters the first annular groove 11. Due to the rotation of the bearing heat dissipation ring 100, the air in the first annular groove 11 will also generate centrifugal force, and be discharged along the heat dissipation holes 12 arranged on the outer wall of the first annular groove 11. The high-speed flowing air will exchange heat with the bearing chamber, thereby taking away the high temperature in the bearing chamber, realizing air cooling and heat dissipation, and effectively reducing the temperature of the bearing box 1000.

[0036] In order to further improve the heat dissipation efficiency, a side of the first annular groove 11 close to the heat dissipation hole 12 is provided with an inclined air guide surface 111. For details, please refer to Figure 3 The inclined air guide surface 111 is inclined toward the bottom wall of the first annular groove 11. The inclined side wall can help guide the fluid (such as air) to enter and flow out of the first annular groove 11 more smoothly, reduce eddy currents and turbulence, and thus reduce fluid resistance and noise. Designing the first annular groove 11 to be truncated cone-shaped as a whole can also further increase the contact area and volume in the annular groove, thereby storing more air for large-area heat exchange with the bearing chamber. In addition, the inclined side wall can increase the stability of the structure and provide better support and strength, especially in applications where the rotating shaft 400 is subjected to pressure or vibration. The inclined air guide surface 111 can also be used to control the direction of air flow and guide the air to be discharged from multiple heat dissipation holes 12. The inclined side wall can help achieve this goal.

[0037] In one embodiment of the present invention, the bearing heat dissipation ring 100 is provided with a plurality of heat dissipation holes 12. For details, please refer to Figure 1 A plurality of heat dissipation holes 12 are evenly spaced and arranged in a ring around the bearing heat dissipation ring 100. The hot air that completes the heat exchange between the bearing heat dissipation ring 100 and the bearing chamber is discharged from the heat dissipation holes 12. Furthermore, in order to improve the exhaust efficiency of the hot air, a heat dissipation waist-shaped groove can be opened on the outer peripheral wall 1b, and the heat dissipation waist-shaped groove is connected to the first ring groove 11, so as to obtain a larger heat dissipation area.

[0038] To ensure reliable sealing of the bearing chamber, the bearing heat dissipation ring 100 further includes a first annular sealing portion 13. For details, please refer to Figure 2 and Figure 3 , the first annular sealing portion 13 is tightly attached to the bearing end cover 300 after installation, thereby achieving sealing. Further, in one embodiment of the utility model, the bearing heat dissipation ring 100 also includes a second annular sealing portion 14, which is arranged on the inner contact end surface 1e and is located on the side of the first annular sealing portion 13 facing the mounting hole 1a. The first annular sealing portion 13 and the second annular sealing portion 14 are arranged similarly to a concentric circle structure, which can form a two-layer seal for the bearing chamber. In another embodiment of the utility model, the first annular sealing portion 13 and the second annular sealing portion 14 are spaced to form a second annular groove 1c, and an annular sealing ring (not marked in the figure) is arranged in the second annular groove 1c, preferably a silicone sealing ring. The silicone material has good elasticity and resilience, and can effectively fill and adapt to the small gap between the bearing end cover 300 and the bearing box 1000, thereby achieving a reliable sealing effect. In addition, silicone has good high temperature resistance, can maintain stable sealing performance at high working temperatures, and prevent lubricating oil leakage and other impurities from entering the bearing. Silicone also has excellent chemical resistance and can resist the erosion of chemical substances such as grease, fuel, acid and alkali, thereby protecting the bearing from corrosion and wear. Therefore, using silicone seal ring to seal the bearing end cover 300 can improve the reliability and stability of the equipment and extend the service life of the equipment.

[0039] The utility model also proposes a bearing box 1000, which includes a box body 200, a bearing heat dissipation ring 100 and a rotating shaft 400. A bearing end cover 300 is provided at one end of the box body 200. The bearing end cover 300 is provided with a bearing chamber with an opening. The rotating shaft 400 is rotatably arranged on the box body 200, and one end of the rotating shaft 400 is exposed at the opening. The bearing heat dissipation ring 100 is sleeved on the rotating shaft 400 and can rotate with the rotating shaft 400. The specific structure of the bearing heat dissipation ring 100 refers to the above-mentioned embodiment. Since the bearing box 1000 adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0040] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A bearing heat dissipation ring (100), applied to a bearing box (1000), characterized in that: An inner contact end surface (1e) and an outer contact end surface (1d) are respectively formed at both ends of the bearing heat dissipation ring (100); a mounting hole (1a) is formed on the bearing heat dissipation ring (100); the mounting hole (1a) is connected to the inner contact end surface (1e) and the outer contact end surface (1d); a first annular groove (11) is formed on the outer contact end surface (1d); a heat dissipation hole (12) is provided on the side wall of the first annular groove (11); the heat dissipation hole (12) is connected to the first annular groove (11) and the outer peripheral wall (1b) of the bearing heat dissipation ring (100).

2. The bearing heat dissipation ring (100) according to claim 1, characterized in that: An inclined air guiding surface (111) is provided on one side of the first annular groove (11) close to the heat dissipation hole (12), and the inclined air guiding surface (111) is arranged inclined toward the groove bottom wall of the first annular groove (11).

3. The bearing heat dissipation ring (100) according to claim 2, characterized in that: The bearing heat dissipation ring (100) is provided with a plurality of heat dissipation holes (12), and the plurality of heat dissipation holes (12) are evenly spaced and arranged in a ring shape on the bearing heat dissipation ring (100).

4. The bearing heat dissipation ring (100) according to any one of claims 1 to 3, characterized in that: The bearing heat dissipation ring (100) further comprises a first annular sealing portion (13), wherein the first annular sealing portion (13) is arranged on the inner contact end surface (1e).

5. The bearing heat dissipation ring (100) according to claim 4, characterized in that: The bearing heat dissipation ring (100) further comprises a second annular sealing portion (14), wherein the second annular sealing portion (14) is arranged on the inner contact end surface (1e) and is located on a side of the first annular sealing portion (13) facing the mounting hole (1a).

6. The bearing heat dissipation ring (100) according to claim 5, characterized in that: A second annular groove (1c) is formed between the first annular sealing portion (13) and the second annular sealing portion (14), and the bearing heat dissipation ring (100) further comprises an annular sealing ring, which is arranged in the second annular groove (1c).

7. The bearing heat dissipation ring (100) according to claim 5, characterized in that: The bearing heat dissipation ring (100) is an integrally formed structure.

8. A bearing box (1000), characterized in that: include: A box body (200), one end of the box body (200) is provided with a bearing end cover (300), and the bearing end cover (300) is provided with a bearing chamber with an opening; The bearing cooling ring (100) according to any one of claims 1 to 7; and A rotating shaft (400) is rotatably disposed on the housing (200), one end of the rotating shaft (400) is exposed at the opening, and the bearing heat dissipation ring (100) is sleeved on the rotating shaft (400) and can rotate together with the rotating shaft (400).

9. The bearing box (1000) according to claim 8, characterized in that: The bearing end cover (300) is provided with a fixing bolt (310), and the bearing end cover (300) is threadedly connected to the housing (200) via the fixing bolt (310).

10. The bearing box (1000) according to claim 8, characterized in that: The inner diameter of the mounting hole (1a) of the bearing heat dissipation ring (100) is d1, and the outer diameter of the rotating shaft (400) is d2, where d1≤d2.

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