Cooling and radiating device for compressor bearing

Abstract

The utility model relates to a compressor bearing cooling and radiating device which comprises a compressor shell main shaft, a compressor bearing and a compressor shell. And the main shaft is rotatably arranged in the compressor shell. The compressor bearing is fixedly arranged in the compressor shell and arranged on the main shaft in a sleeved mode, a heat pipe is arranged on the compressor bearing, a working medium capable of being gasified is arranged in the heat pipe, a cooling air pipe is arranged at the position of the heat pipe, and the heat pipe is matched with the cooling air pipe to cool and dissipate heat of the compressor bearing. The heat pipe is arranged on the compressor bearing, the working medium in the heat pipe can absorb heat of the compressor bearing to be vaporized, the cooling air pipe is matched to enable the working medium to be liquefied when encountering cold and release the heat, the heat dissipation efficiency is high, and the heat dissipation speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal gas compressors, in particular to a compressor bearing cooling and heat dissipation device. Background Art

[0002] The centrifugal compressor rotor needs to be supported by bearings, most of which are sliding bearings. As the rotor rotates, the temperature of the bearing will gradually increase. When the bearing temperature is too high, the surface of the bearing pad will be burned, causing the bearing to fail and be damaged.

[0003] Currently, bearing cooling is done by removing excess heat with lubricating oil. However, the main function of lubricating oil is lubrication. When the compressor encounters special working conditions, such as increased compressor load, the lubricating oil inside the bearing is likely to be heated to too high a temperature, making it impossible to cool the bearing in time. Utility Model Content

[0004] The utility model aims to provide a compressor bearing cooling and heat dissipation device, which can be equipped with a heat pipe on the compressor bearing, so that the working fluid in the heat pipe can absorb the heat of the compressor bearing and vaporize, and then cooperate with the cooling air pipe to make the working fluid liquefy when cooled and release the heat, so as to have high heat dissipation efficiency and fast heat dissipation speed.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a compressor bearing cooling and heat dissipation device, comprising:

[0006] Compressor casing;

[0007] a main shaft rotatably disposed in the compressor casing;

[0008] A compressor bearing is fixedly arranged in the compressor casing and sleeved on the main shaft. A heat pipe is arranged on the compressor bearing. A gasifiable working medium is arranged in the heat pipe. A cooling air pipe is arranged at the heat pipe. The heat pipe cooperates with the cooling air pipe to cool and dissipate heat for the compressor bearing.

[0009] Optionally, there are multiple heat pipes, and the multiple heat pipes are connected end to end and evenly distributed circumferentially along the side surface of the compressor bearing.

[0010] Optionally, the heat pipe comprises:

[0011] The heat pipe heating end, the compressor bearing side is provided with a mounting groove, the heat pipe heating end is arranged in the mounting groove;

[0012] The heat pipe cooling end is arranged between two adjacent heat pipe heating ends and connected to the two adjacent heat pipe heating ends, and the heat pipe cooling end extends out of the compressor bearing.

[0013] Optionally, the heat pipe heating end and the heat pipe cooling end are U-shaped structures.

[0014] Optionally, a compressor exhaust pipe is provided on the compressor casing for providing gas cooled by a cooler to the cooling air pipe.

[0015] Optionally, a receiving groove of an annular structure for receiving the cooling end of the heat pipe is provided in the compressor casing, and the cooling air pipe comprises:

[0016] A plurality of cooling air inlet pipes, one end of each cooling air inlet pipe is connected to the compressor exhaust pipe, and the other end of each cooling air inlet pipe is connected to the containing tank;

[0017] A plurality of cooling exhaust pipes are connected to the containing tank.

[0018] Optionally, a compressor impeller is disposed in the compressor casing, and the compressor impeller is connected to the main shaft.

[0019] Optionally, the compressor bearing can be divided into two parts for disassembly and assembly.

[0020] The beneficial effect of the utility model is that by arranging a heat pipe on the compressor bearing, the working fluid in the heat pipe can absorb the heat of the compressor bearing and vaporize, and then cooperate with the cooling air pipe to make the working fluid liquefied when cooled and release the heat, so the heat dissipation efficiency is high and the heat dissipation speed is fast.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural cross-sectional view of a compressor bearing cooling and heat dissipation device shown in one embodiment of the utility model;

[0023] Figure 2 A schematic structural diagram of a heat pipe of a compressor bearing cooling and heat dissipation device shown in one embodiment of the utility model;

[0024] In the figure: 1. compressor casing; 2. main shaft; 3. compressor bearing; 31. mounting groove; 4. heat pipe; 41. heating end of heat pipe; 42. cooling end of heat pipe; 5. cooling air pipe; 51. cooling air inlet pipe; 52. cooling exhaust pipe; 6. compressor exhaust pipe; 7. compressor impeller. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] It should be noted in advance that in conventional solutions, the bearing is cooled mainly through lubricating oil, and the main purpose of lubricating oil is lubrication, and lubricating oil has a suitable working temperature. When the lubricating oil temperature is too low, it will be too viscous and difficult to lubricate. When the lubricating oil temperature is too high, it will burn the bearing pads. Therefore, before the lubricating oil enters the compressor, an oil cooler is usually used to adjust the lubricating oil to a suitable temperature. Since the inlet temperature of the lubricating oil is constant, when the compressor load increases, the lubricating oil inside the bearing is likely to be heated to an excessively high temperature, making it impossible to cool the bearing in time, resulting in the burning of the bearing pads.

[0029] Based on this, see Figure 1A compressor bearing cooling and heat dissipation device shown in a preferred embodiment of the present application includes a compressor casing 1, a main shaft 2 and a compressor bearing 3. The main shaft 2 is rotatably arranged in the compressor casing 1. The compressor bearing 3 is fixedly arranged in the compressor casing 1 and sleeved on the main shaft 2. A heat pipe 4 is arranged on the compressor bearing 3. A gasifiable working medium is arranged in the heat pipe 4. A cooling air pipe 5 is arranged at the heat pipe 4. The heat pipe 4 cooperates with the cooling air pipe 5 to cool and dissipate the compressor bearing 3.

[0030] According to the scheme of the embodiment of the utility model, by arranging the heat pipe 4 on the compressor bearing 3, the working medium in the heat pipe 4 can absorb the heat of the compressor bearing 3 and vaporize, and then cooperate with the cooling air pipe 5 to make the working medium liquefy when cooled and release the heat, so as to achieve high heat dissipation efficiency and fast heat dissipation speed. If the cooling air is directly passed through the compressor bearing 3, due to the narrow space of the bearing part, the gas flow rate is small and the flow rate is fast, it is likely that the heat cannot be exchanged in time and is discharged, and the purpose of cooling and dissipating the compressor bearing 3 cannot be achieved.

[0031] The following is a detailed description with specific embodiments:

[0032] See also Figure 2 , the heat pipe 4 has multiple heat pipes 4, which are connected end to end and evenly distributed along the circumference of the side of the compressor bearing 3. The heat pipe 4 includes a heat pipe heating end 41 and a heat pipe cooling end 42. A mounting groove 31 is provided on the side of the compressor bearing 3, and the heat pipe heating end 41 is arranged in the mounting groove 31. The heat pipe cooling end 42 is arranged between two adjacent heat pipe heating ends 41 and connected to the two adjacent heat pipe heating ends 41, and the heat pipe cooling end 42 extends out of the compressor bearing 3. The heat pipe 4 is a high-efficiency heat exchange device, which has the advantages of not requiring external equipment and being suitable for various shapes. In this embodiment, the end of the heat pipe 4 embedded in the compressor bearing 3 is called the heat pipe heating end 41, and the end extending out of the compressor bearing 3 is called the heat pipe cooling end 42. Since the interior of the heat pipe 4 is close to vacuum, the working fluid is very easy to gasify. The heat pipe heating end 41 will absorb the heat of the compressor bearing 3 to gasify the working fluid inside the heat pipe 4. Through ventilation at the cooling end, the gasified working fluid will liquefy at the heat pipe cooling end 42, thereby releasing the heat, thereby achieving the purpose of cooling and dissipating the compressor bearing 3. Specifically, in this embodiment, the heat pipe heating end 41 and the heat pipe cooling end 42 are U-shaped structures, and a plurality of heat pipes 4 are connected at their ends to form a heat pipe 4 system.

[0033] See also Figure 1, a compressor exhaust pipe 6 is provided on the compressor casing 1, which is used to provide the cooling air pipe 5 with gas cooled by the cooler. A receiving groove of an annular structure for receiving the heat pipe cooling end 42 is provided in the compressor casing 1, and the cooling air pipe 5 includes a plurality of cooling air inlet pipes 51 and a plurality of cooling air exhaust pipes 52. One end of the cooling air inlet pipe 51 is connected to the compressor exhaust pipe 6, and the other end of the cooling air inlet pipe 51 is connected to the receiving groove. One end of the cooling air exhaust pipe 52 is connected to the receiving groove, and the other end of the cooling air exhaust pipe 52 extends out of the compressor casing 1. In this embodiment, two cooling air inlet pipes 51 and cooling air exhaust pipes 52 are respectively provided. A small portion of the gas cooled by the cooler is drawn out from the compressor exhaust pipe 6 and enters the receiving groove of the compressor bearing 3 through the cooling air inlet pipe 51. After cooling, the gas is discharged from the cooling air exhaust pipe 52. Since the gas is drawn from the end of the compressor, there is no need for an external air source, saving equipment and cost.

[0034] See also Figure 1 The compressor housing 1 also includes a compressor impeller 7, which is connected to the main shaft 2. Figure 2 The compressor bearing 3 can be divided into two parts for disassembly and assembly. The compressor bearing 3 can be divided into two parts, which is convenient for installing the compressor bearing 3 into the compressor housing 1.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A compressor bearing cooling and heat dissipation device, characterized in that: include: Compressor casing; a main shaft rotatably disposed in the compressor casing; A compressor bearing is fixedly arranged in the compressor casing and sleeved on the main shaft. A heat pipe is arranged on the compressor bearing. A gasifiable working medium is arranged in the heat pipe. A cooling air pipe is arranged at the heat pipe. The heat pipe cooperates with the cooling air pipe to cool and dissipate heat for the compressor bearing.

2. The compressor bearing cooling and heat dissipation device according to claim 1, characterized in that: There are multiple heat pipes, which are connected end to end and evenly distributed along the circumferential direction of the side surface of the compressor bearing.

3. The compressor bearing cooling and heat dissipation device according to claim 2, characterized in that: The heat pipe comprises: The heat pipe heating end, the compressor bearing side is provided with a mounting groove, the heat pipe heating end is arranged in the mounting groove; The heat pipe cooling end is arranged between two adjacent heat pipe heating ends and connected to the two adjacent heat pipe heating ends, and the heat pipe cooling end extends out of the compressor bearing.

4. The compressor bearing cooling and heat dissipation device according to claim 3, characterized in that: The heat pipe heating end and the heat pipe cooling end are U-shaped structures.

5. The compressor bearing cooling and heat dissipation device according to claim 4, characterized in that: The compressor casing is provided with a compressor exhaust pipe for providing the cooling air pipe with gas cooled by a cooler.

6. The compressor bearing cooling and heat dissipation device according to claim 5, characterized in that: The compressor casing is provided with an annular accommodating groove for accommodating the cooling end of the heat pipe, and the cooling air pipe comprises: A plurality of cooling air inlet pipes, one end of each cooling air inlet pipe is connected to the compressor exhaust pipe, and the other end of each cooling air inlet pipe is connected to the containing tank; A plurality of cooling exhaust pipes are connected to the containing tank.

7. The compressor bearing cooling and heat dissipation device according to claim 1, characterized in that: A compressor impeller is arranged in the compressor casing, and the compressor impeller is connected to the main shaft.

8. The compressor bearing cooling and heat dissipation device according to claim 1, characterized in that: The compressor bearing can be divided into two parts for disassembly and assembly.

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