A high-speed motor test system for refrigerant lubricated rolling bearings

Abstract

The invention discloses a high-speed motor test system for refrigerant lubricated rolling bearings, comprising a refrigerant storage tank, a refrigerant pump, a high-speed motor, a heat exchanger, a bearing fluid supply pipeline, a motor fluid return pipeline, a first- and second-stage interstage pipeline of the motor, a second-stage outlet pipeline and a first-stage inlet pipeline, wherein one side of the second-stage outlet of the high-speed motor is connected with the second-stage outlet pipeline, the other end of the second-stage outlet pipeline is connected with the heat exchanger, one side of the first-stage inlet of the high-speed motor is connected with the first-stage inlet pipeline, and the other end of the first-stage inlet pipeline is connected with the heat exchanger, the first- and second-stage interstage pipelines of the motor are installed on the outer walls on both sides between the cold high-speed motors, and the two ends of the first- and second-stage interstage pipelines of the motor are connected with the outer walls of the second-stage inlet and the first-stage outlet of the high-speed motor; the invention can perform a nuclear running test on the whole machine without load through this system, eliminating the need to seal the air inlet and draw negative pressure at the air outlet, the system is simple, can be directly tested, and the work efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerant lubricated rolling bearing high-speed motor testing, in particular to a refrigerant lubricated rolling bearing high-speed motor testing system. Background Art

[0002] High-speed motors usually refer to motors with speeds exceeding 10,000 r / min. They have high speeds, are much smaller than ordinary-power motors, are connected to the prime mover, and do not require traditional reduction mechanisms. High-speed motors have small rotational inertia, so they have high power density, can effectively save materials, have high transmission efficiency, low noise, and fast dynamic response. Currently, high-speed motors used in the refrigeration industry are tested without load, and the air inlet needs to be sealed and the air outlet needs to be negatively pressured. This operation is cumbersome and reduces the efficiency of the test. Therefore, it is necessary to design a high-speed motor test system for refrigerant-lubricated rolling bearings. Summary of the invention

[0003] The purpose of the present invention is to provide a high-speed motor testing system for refrigerant-lubricated rolling bearings. Through this system, the present invention can perform a nuclear test on the entire machine without load, eliminating the need to seal the air inlet and draw negative pressure at the air outlet. The system is simple and can be tested directly, thereby improving work efficiency.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A high-speed motor test system for refrigerant lubricated rolling bearings comprises a refrigerant storage tank, a refrigerant pump, a high-speed motor, a heat exchanger, a bearing fluid supply pipeline, a motor fluid return pipeline, a first- and second-stage interstage pipeline of the motor, a second-stage outlet pipeline and a first-stage inlet pipeline, wherein a second-stage outlet pipeline is connected to one side of the second-stage outlet of the high-speed motor, and a heat exchanger is connected to the other end of the second-stage outlet pipeline, a first-stage inlet pipeline is connected to one side of the first-stage inlet of the high-speed motor, and the other end of the first-stage inlet pipeline is connected to the heat exchanger, first- and second-stage interstage pipelines of the motor are installed on the outer walls on both sides between the cold high-speed motors, and both ends of the first- and second-stage interstage pipelines of the motor are connected to the outer walls of the second-stage inlet and the first-stage outlet of the high-speed motor, a motor fluid return pipeline is connected to one side of the high-speed motor, a refrigerant storage tank is installed at the other end of the motor fluid return pipeline, and the refrigerant storage tank is connected to the motor fluid return pipeline, a refrigerant pump is connected to one side of the refrigerant storage tank through a pipeline, a bearing fluid supply pipeline is connected to one side of the refrigerant pump, and the other end of the bearing fluid supply pipeline is connected to the high-speed motor.

[0006] As a further solution of the present invention: the other end of the bearing fluid supply pipeline is respectively connected to the outer wall of the first and second stages of the high-speed motor.

[0007] As a further solution of the present invention: the heat exchanger includes a shell, a fixed plate, a heat exchange plate, a hot runner, a cold runner, a first fin, a second fin, a flow hole, a lower header, a first liquid inlet pipe, an upper header, a first liquid outlet pipe, a first connecting pipe, a second liquid inlet pipe, a second connecting pipe, and a second liquid outlet pipe. Two fixed plates are fixed on the inner walls on both sides of the shell, and a heat exchange plate is welded on the outer wall between the fixed plates. A plurality of cold runners are opened on the outer wall of the top end of the heat exchange plate, and a plurality of hot runners are opened on the outer walls of the heat exchange plate located on both sides of the cold runner. Both sides of the cold runner A first fin is fixedly passed through the inner wall corresponding to the hot runner, and the other side of the first fin is located in the hot runner, a lower header is fixedly passed through the outer wall of the bottom end of the heat exchange plate corresponding to the hot runner, and the lower header is connected to multiple hot runners, a first liquid inlet pipe is fixedly passed through the corresponding lower header on one side of the shell, and the first liquid inlet pipe is connected to the lower header, an upper header is fixedly passed through the outer wall of the top end of the heat exchange plate corresponding to the hot runner, and the upper header is connected to multiple hot runners, a first liquid outlet pipe is fixedly passed through the corresponding upper header on one side of the shell, and the first liquid outlet pipe is connected to the upper header.

[0008] As a further solution of the present invention: a plurality of second fins are fixedly penetrated on the inner wall of one side of the hot runner, and the second fins pass through one side of the outer wall of the heat exchange plate and are fixed to the inner wall of the shell.

[0009] As a further solution of the present invention: the second fins are provided with flow holes on their outer walls outside the heat exchange plate, and the flow holes are provided in obliquely symmetrical manner on adjacent second fins.

[0010] As a further solution of the present invention: a second liquid inlet pipe is fixed on the outer wall of the top end of the heat exchange plate corresponding to the cold runner, and the second liquid inlet pipe is connected to multiple cold runners, two first connecting pipes are connected through the outer wall of the second liquid inlet pipe, and the other end of the first connecting pipe is connected to the flow hole near the second liquid inlet pipe, a second liquid outlet pipe is fixed on the outer wall of the bottom end of the heat exchange plate corresponding to the cold runner, and the second liquid outlet pipe is connected to multiple cold runners, two second connecting pipes are connected on the outer wall of the second liquid outlet pipe, and the other end of the second connecting pipe is connected to the flow hole near the second liquid outlet pipe.

[0011] The beneficial effects of the present invention are as follows: the present invention can carry out nuclear running test on the whole machine without load through this system, eliminating the need for sealing the air inlet and drawing negative pressure at the air outlet. The system is simple and can be tested directly, which improves work efficiency. The heat exchanger has a simple structure, and the heat exchange effect of the heat exchanger is improved through the coordination of the heat exchange plate, hot runner, cold runner, first fin, second fin and flow hole, which facilitates cooling of the secondary gas. The cooling effect is relatively good, and it is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the main three-dimensional structure of the heat exchanger of the present invention;

[0015] Figure 3 is a side sectional view of a heat exchanger of the present invention;

[0016] Figure 4 is a top cross-sectional view of the heat exchanger of the present invention;

[0017] In the figure: 1. Refrigerant storage tank; 2. Refrigerant pump; 3. High-speed motor; 4. Heat exchanger; 5. Bearing liquid supply pipe; 6. Motor liquid return pipe; 7. Motor first and second stage interstage pipes; 8. Second stage outlet pipe; 9. First stage inlet pipe; 01. Shell; 02. Fixed plate; 03. Heat exchange plate; 04. Hot runner; 05. Cold runner; 06. First fin; 07. Second fin; 08. Flow hole; 09. Lower header; 010. First liquid inlet pipe; 011. Upper header; 012. First liquid outlet pipe; 013. First connecting pipe; 014. Second liquid inlet pipe; 015. Second connecting pipe; 016. Second liquid outlet pipe. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-4As shown, a high-speed motor test system for refrigerant-lubricated rolling bearings includes a refrigerant storage tank 1, a refrigerant pump 2, a high-speed motor 3, a heat exchanger 4, a bearing fluid supply pipeline 5, a motor fluid return pipeline 6, a motor first- and second-stage interstage pipeline 7, a second-stage outlet pipeline 8 and a first-stage inlet pipeline 9. The second-stage outlet pipeline 8 is connected to one side of the second-stage outlet of the high-speed motor 3, and the other end of the second-stage outlet pipeline 8 is connected to the heat exchanger 4. The first-stage inlet pipeline 9 is connected to one side of the first-stage inlet of the high-speed motor 3, and the other end of the first-stage inlet pipeline 9 is connected to the heat exchanger 4. The first- and second-stage interstage pipelines 7 of the motor are installed on the outer walls on both sides of the high-speed motor 3, and both ends of the first- and second-stage interstage pipelines 7 of the motor are connected to the second stage of the high-speed motor 3. The outer wall of the first-stage inlet and the first-stage outlet is connected, one side of the high-speed motor 3 is connected with a motor return liquid pipeline 6, the other end of the motor return liquid pipeline 6 is installed with a refrigerant storage tank 1, and the refrigerant storage tank 1 is connected with the motor return liquid pipeline 6, one side of the refrigerant storage tank 1 is connected with a refrigerant pump 2 through a pipeline, one side of the refrigerant pump 2 is connected with a bearing liquid supply pipeline 5, and the other end of the bearing liquid supply pipeline 5 is connected with the high-speed motor 3. Through this system, the whole machine can be run nuclear test without load, the system is simple and easy to operate; the other end of the bearing liquid supply pipeline 5 is respectively connected to the outer wall of the first and second stages of the high-speed motor 3, which is convenient for improvement and for the first-stage gas to enter the second stage through the motor first-stage and second-stage interstage pipeline 7;

[0020] The heat exchanger 4 includes a shell 01, a fixed plate 02, a heat exchange plate 03, a hot runner 04, a cold runner 05, a first fin 06, a second fin 07, a flow hole 08, a lower header 09, a first liquid inlet pipe 010, an upper header 011, a first liquid outlet pipe 012, a first connecting pipe 013, a second liquid inlet pipe 014, a second connecting pipe 015, and a second liquid outlet pipe 016. Two fixed plates 02 are fixed on the inner walls on both sides of the shell 01, and a heat exchange plate 03 is welded on the outer wall between the fixed plates 02. A plurality of cold runners 05 are opened on the outer wall of the top end of the heat exchange plate 03, and a plurality of hot runners 04 are opened on the outer wall of the heat exchange plate 03 located on both sides of the cold runner 05. The inner walls on both sides of the cold runner 05 are fixed with first The fin 06 is provided, and the other side of the first fin 06 is located in the hot runner 04. A lower header 09 is fixed on the outer wall of the bottom end of the heat exchange plate 03 corresponding to the hot runner 04, and the lower header 09 is connected to multiple hot runners 04. A first liquid inlet pipe 010 is fixed through the lower header 09 on one side of the shell 01, and the first liquid inlet pipe 010 is connected to the lower header 09. An upper header 011 is fixed on the outer wall of the top end of the heat exchange plate 03 corresponding to the hot runner 04, and the upper header 011 is connected to multiple hot runners 04. A first liquid outlet pipe 012 is fixed through the upper header 011 on one side of the shell 01, and the first liquid outlet pipe 012 is connected to the upper header 011. The structure is simple, practical and convenient, and it is easy to cool the secondary gas. , the cooling effect is better, it is more practical and perfect; a plurality of second fins 07 are fixed through the inner wall of one side of the hot runner 04, and the second fins 07 pass through one side of the outer wall of the heat exchange plate 03 and are fixed to the inner wall of the shell 01, and the heat of the secondary gas is absorbed by the arranged second fins 07, and is transferred to the coolant outside the heat exchange plate 03, so as to realize the cooling of the secondary gas; the second fins 07 are provided with flow holes 08 on the outer wall outside the heat exchange plate 03, and the flow holes 08 are provided in an obliquely symmetrical manner on the adjacent second fins 07, so that the heat exchange effect of the equipment is better, and the coolant can pass through the flow holes 08 in sequence, thereby improving the uniformity of cooling the second fins 07, which is more perfect; a A second liquid inlet pipe 014 is provided, and the second liquid inlet pipe 014 is connected to a plurality of cold flow channels 05. Two first connecting pipes 013 are connected through the outer wall of the second liquid inlet pipe 014, and the other end of the first connecting pipe 013 is connected to a flow hole 08 near the second liquid inlet pipe 014. A second liquid outlet pipe 016 is fixed on the outer wall of the bottom end of the heat exchange plate 03 corresponding to the cold flow channel 05, and the second liquid outlet pipe 016 is connected to a plurality of cold flow channels 05. Two second connecting pipes 015 are connected to the outer wall of the second liquid outlet pipe 016, and the other end of the second connecting pipe 015 is connected to a flow hole 08 near the second liquid outlet pipe 016, making the overall structure more perfect and complete, further improving the cooling effect and efficiency of the secondary gas, and facilitating the normal heat exchange of the heat exchanger 4.

[0021] The working principle of the present invention is as follows: the refrigerant pump 2 is started, and the refrigerant liquid in the refrigerant storage tank 1 enters the high-speed motor 3 through the bearing liquid supply pipe 5, and returns to the refrigerant storage tank 1 through the motor return liquid pipe 6, and the high-speed motor 3 is started. The primary gas enters the secondary stage through the motor first and second stage interstage pipe 7, and the secondary gas enters the heat exchanger 4 through the secondary outlet pipe 8 for cooling, and then enters the first stage through the first inlet pipe 9, thereby realizing circulation; the secondary gas enters the first liquid inlet pipe 010, and then enters the lower collecting pipe 09 from the first liquid inlet pipe 010, and then enters the hot runner 04 for cooling, the first fin 06 and the second fin 07 absorb the heat of the secondary gas, and at the same time, the coolant enters the cold runner 05 through the second liquid inlet pipe 014 and enters the gap formed by the second fin 07 through the first connecting pipe 013, and passes through the flow hole 08 in turn to cool the first fin 06 and the second fin 07, and then returns to the second liquid outlet pipe 16 for discharge, and the secondary gas comes out from the first liquid outlet pipe 012 and enters the primary inlet pipe 9.

[0022] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-speed motor test system for refrigerant lubricated rolling bearings, characterized in that: The invention comprises a refrigerant storage tank (1), a refrigerant pump (2), a high-speed motor (3), a heat exchanger (4), a bearing fluid supply pipeline (5), a motor fluid return pipeline (6), a first-stage and second-stage pipeline (7) of the motor, a second-stage outlet pipeline (8) and a first-stage inlet pipeline (9), wherein one side of the second-stage outlet of the high-speed motor (3) is connected to the second-stage outlet pipeline (8), and the other end of the second-stage outlet pipeline (8) is connected to the heat exchanger (4), one side of the first-stage inlet of the high-speed motor (3) is connected to the first-stage inlet pipeline (9), and the other end of the first-stage inlet pipeline (9) is in communication with the heat exchanger (4), and the two sides of the high-speed motor (3) are connected to each other. A motor first- and second-stage interstage pipeline (7) is installed on the outer wall, and both ends of the motor first- and second-stage interstage pipeline (7) are connected to the outer wall of the second-stage inlet and the first-stage outlet of the high-speed motor (3); a motor return liquid pipeline (6) is connected to one side of the high-speed motor (3); a refrigerant storage tank (1) is installed on the other end of the motor return liquid pipeline (6), and the refrigerant storage tank (1) is connected to the motor return liquid pipeline (6); a refrigerant pump (2) is connected to one side of the refrigerant pump (2) through a pipeline; a bearing liquid supply pipeline (5) is connected to one side of the refrigerant pump (2), and the other end of the bearing liquid supply pipeline (5) is connected to the high-speed motor (3); The heat exchanger (4) comprises a shell (01), a fixed plate (02), a heat exchange plate (03), a hot runner (04), a cold runner (05), a first fin (06), a second fin (07), a flow hole (08), a lower header (09), a first liquid inlet pipe (010), an upper header (011), a first liquid outlet pipe (012), a first connecting pipe (013), a second liquid inlet pipe (014), a second connecting pipe (015), and a second liquid outlet pipe (016). Two fixed plates (02) are fixed on the inner walls on both sides of the shell (01). A heat exchange plate (03) is welded on the outer wall between the fixed plates (02). A plurality of cold runners (05) are provided on the outer wall at the top end of the heat exchange plate (03). A plurality of hot runners (04) are provided on the outer walls of the heat exchange plate (03) located on both sides of the cold runner (05). A first fin (06) is fixedly passed through the wall corresponding to the hot runner (04), and the other side of the first fin (06) is located in the hot runner (04); a lower header (09) is fixedly passed through the outer wall of the bottom end of the heat exchange plate (03) corresponding to the hot runner (04), and the lower header (09) is connected to a plurality of hot runners (04); a first liquid inlet pipe (010) is fixedly passed through the side of the shell (01) corresponding to the lower header (09); The first liquid inlet pipe (010) is connected to the lower header (09); an upper header (011) is fixed on the top outer wall of the heat exchange plate (03) corresponding to the hot runner (04), and the upper header (011) is connected to a plurality of hot runners (04); a first liquid outlet pipe (012) is fixed on one side of the shell (01) corresponding to the upper header (011), and the first liquid outlet pipe (012) is connected to the upper header (011).

2. A refrigerant lubricated rolling bearing high-speed motor test system according to claim 1, characterized in that: The other end of the bearing fluid supply pipeline (5) is respectively connected to the outer walls of the first and second stages of the high-speed motor (3).

3. According to the refrigerant lubricated rolling bearing high-speed motor testing system of claim 2, a plurality of second fins (07) are fixedly penetrated on the inner wall of one side of the hot runner (04), and the second fins (07) pass through one side of the outer wall of the heat exchange plate (03) and are fixed to the inner wall of the shell (01).

4. A refrigerant lubricated rolling bearing high-speed motor test system according to claim 3, characterized in that: The second fins (07) are each provided with flow holes (08) on the outer walls of the heat exchange plate (03), and the flow holes (08) are provided in an obliquely symmetrical manner on adjacent second fins (07).

5. The high-speed motor testing system for refrigerant lubricated rolling bearings according to claim 1 is characterized in that: A second liquid inlet pipe (014) is fixed on the outer wall of the top end of the heat exchange plate (03) corresponding to the cold flow channel (05), and the second liquid inlet pipe (014) is connected to multiple cold flow channels (05); two first connecting pipes (013) are connected through the outer wall of the second liquid inlet pipe (014), and the other end of the first connecting pipe (013) is connected to a flow hole (08) near the second liquid inlet pipe (014); a second liquid outlet pipe (016) is fixed on the outer wall of the bottom end of the heat exchange plate (03) corresponding to the cold flow channel (05), and the second liquid outlet pipe (016) is connected to multiple cold flow channels (05); two second connecting pipes (015) are connected on the outer wall of the second liquid outlet pipe (016), and the other end of the second connecting pipe (015) is connected to the flow hole (08) near the second liquid outlet pipe (016).

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