Prediction of friction and wear of friction interface of highly gasifiable refrigerant pump and fully enclosed test system

Abstract

The present invention discloses a friction and wear prediction and fully enclosed test system for the friction interface of a highly gasifiable refrigerant pump, comprising a motor, a rotating table and a connecting seat, wherein the connecting seat is provided with an inlet, an outlet and a cavity, the rotating table comprises a rotating body, a rotating shaft and a fixed frame, a metal pair is provided between the end face of the rotating body and the rotating shaft, and a supporting block is provided between the metal pair and the fixed frame and the supporting table respectively, a sensor is provided on the supporting block, and the rotating shaft is provided with mutually connected channels and through holes, and the refrigerant medium is transported to the friction interface between the metal pair and the supporting block through the inlet through the channel and the through hole, and the sensor collects data to realize the prediction of the friction and wear between the metal pair and the supporting block. The present invention can not only perform real-time detection of the temperature, pressure and vibration of the friction interface in the rotating table, but also predict the cycle of system operation according to the collected data, thereby ensuring the safe and effective operation of the system, and realizing the gas-liquid two-phase conversion process during the operation of the gas and liquid simulated fluorine pump.

Description

Technical Field

[0001] The invention relates to a friction and wear prediction and fully enclosed test system for a friction interface of a highly gasifiable refrigerant pump. Background Art

[0002] Refrigerant pumps are usually used in air-conditioning systems or industrial refrigeration. Refrigerant is the working fluid used to transfer heat energy and produce a refrigeration effect in refrigeration and air-conditioning systems. The performance of the refrigerant pump affects the flow rate and head of the refrigerant transmission.

[0003] Fluorine pump is a kind of refrigerant pump. Only fluorine pump air conditioners are currently used for thermal management. However, the service life of the friction pair of a fully enclosed fluorine pump cannot be predicted, resulting in a large amount of cost waste in long-term operation testing. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for predicting the friction and wear of the friction interface of an extremely easy-to-gasify refrigerant pump and a fully enclosed test system to address the deficiencies in the prior art. The system can not only detect the temperature, pressure and vibration of the friction interface in the rotating table in real time and determine the degree of wear of the friction interface, but also predict the system operation cycle based on the collected data to ensure the safe and efficient operation of the system, while realizing the gas-liquid two-phase conversion process during the operation of the gas and liquid simulated fluorine pump.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] Friction and wear prediction and fully enclosed test system for friction interface of highly gasifiable refrigerant pump, including

[0007] Motor;

[0008] A rotating table, wherein the motor is connected to the rotating table;

[0009] and a connecting seat, the rotating table being connected to the connecting seat;

[0010] Features:

[0011] The connecting seat is provided with an inlet, an outlet and a cavity, the outlet is connected to the cavity, and a support platform is provided in the cavity;

[0012] The rotating table includes a rotating body, a rotating shaft and a fixed frame, the rotating body is connected to the rotating shaft, a metal pair is arranged between the end face of the rotating body and the rotating shaft, the fixed frame is connected to the pump cover of the rotating table, and support blocks are arranged between the metal pair, the fixed frame and the supporting table respectively, and a sensor is arranged on the support block, and the rotating shaft is provided with mutually connected channels and through holes, the channel is connected to the inlet, and the cold medium is transported to the friction interface between the metal pair and the support block through the channel and the through hole through the inlet, and the sensor collects data to realize the prediction of the friction wear between the metal pair and the support block; through the design of the above structure, not only the temperature, pressure and vibration of the friction interface in the rotating table can be detected in real time to judge the wear degree of the friction interface, but also the system operation cycle can be predicted according to the collected data to ensure the safe and effective operation of the system, the design of the channel and the through hole is convenient for the cold medium to enter the friction interface, plays a lubricating role, and realizes the gas-liquid two-phase conversion process during the operation of the gas and liquid simulated fluorine pump.

[0013] Furthermore, the rotating body includes a skeleton, an end plate, a second magnet and a fourth magnet. The second magnet is embedded in the skeleton through the end plate. The fourth magnet is arranged on the skeleton and is located on the opposite side of the end plate. The end plate improves the stability and reliability of the installation of the second magnet. The second magnet is used to realize the rotation of the skeleton and the rotating shaft. The fourth magnet is used to generate axial thrust to facilitate the collection of mechanical properties on the second supporting block. The skeleton can drive the rotating shaft to rotate synchronously.

[0014] Furthermore, the metal pair includes a first metal pair and a second metal pair, and the supporting block includes a first supporting block and a second supporting block. One end face of the rotating body is pressed against the fixed frame via the first metal pair and the first supporting block, and one end of the rotating shaft is limited in the first limiting groove of the fixed frame. The other end face of the rotating body is pressed against the supporting platform via the second metal pair and the second supporting block, and the other end of the rotating shaft is limited in the second limiting groove of the supporting platform. Through the design of the first metal pair, the second metal pair, the first supporting block and the second supporting block, not only the stability and reliability of the rotating body during rotation are improved, but also it is convenient to detect the parameters of the friction interface between the metal pair and the supporting block, which is used to predict the operation cycle of the system.

[0015] Furthermore, the channel is connected to the inlet through the second limiting groove, so that the refrigerant medium is input into the channel through the second limiting groove, and then transported to each friction interface by the channel to achieve lubrication of the friction interface.

[0016] Furthermore, the sensor includes at least one of a temperature sensor, a mechanical sensor and a vibration sensor. The temperature sensor is used to detect the temperature of the friction interface. The mechanical sensor is used to detect the force at the friction interface and then adjust the magnetic force of the magnetic pole. The vibration sensor is used to detect vibration during rotation.

[0017] Furthermore, the rotating table also includes a pump body and a rotating cover. The pump body is arranged between the motor and the pump cover. The pump body, the pump cover and the fixed frame are connected to form a closed structure. The rotating cover is connected to the output shaft of the motor and is limited within the closed structure. Through the design of the closed structure, not only can the leakage of the refrigerant medium be prevented, but also the stable rotation of the rotating cover can be ensured to reduce resistance.

[0018] Furthermore, a first magnet is distributed in a ring shape on the inner wall of the rotating cover, which is used to drive the second magnet to rotate synchronously. The first magnet and the second magnet generate a magnetic force of mutual attraction, so that the first magnet can rotate with the rotating cover while driving the second magnet and the rotating body to rotate, thereby facilitating the detection and prediction of friction and wear on the friction interface between the metal pair and the supporting block.

[0019] Furthermore, a third magnet is provided on the inner wall of the rotating cover, and the third magnet is close to the fourth magnet for generating magnetic force to realize axial force on the rotating body, so as to facilitate the detection of mechanical properties of the friction interface between the metal pair and the support block.

[0020] Furthermore, a pressure relief hole is provided on the support platform, and the inlet is connected to the cavity through the pressure relief hole, and the pressure relief hole is used for pressure relief.

[0021] Furthermore, a support frame is provided at the bottom of the connecting seat to improve the stability of the installation.

[0022] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0023] 1. The present invention can not only detect the temperature, pressure and vibration of the friction interface in the rotating table in real time and judge the wear degree of the friction interface, but also predict the operation cycle of the system according to the collected data to ensure the safe and effective operation of the system. The design of the channel and through hole facilitates the input of the refrigerant medium into the friction interface to play a lubricating role, and at the same time realizes the gas-liquid two-phase conversion process during the operation of the gas and liquid simulated fluorine pump.

[0024] 2. Through the design of the first metal pair, the second metal pair, the first support block and the second support block, not only the stability and reliability of the rotating body during rotation are improved, but also the parameters of the friction interface between the metal pair and the support block are conveniently detected for predicting the system operation cycle.

[0025] 3. The design of the rotary table with a closed structure can not only prevent the leakage of the refrigerant medium, but also ensure the stable rotation of the rotary cover and reduce resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the friction and wear prediction and fully enclosed test system of the friction interface of the highly gasifiable refrigerant pump of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0029] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.

[0030] In the figure: 1-motor; 2-rotating table; 3-pump body; 4-support frame; 5-pump cover; 6-connecting seat; 7-inlet; 8-outlet; 9-cavity; 10-rotating cover; 11-output shaft; 12-first magnet; 13-second magnet; 14-fixed frame; 15-third magnet; 16-fourth magnet; 17-first limiting groove; 18-rotating shaft; 19-channel; 20-first metal pair; 21-first supporting block; 22-skeleton; 23-end plate; 24-support table; 25-second limiting groove; 26-through hole; 27-second supporting block; 28-second metal pair; 29-mechanical sensor; 30-temperature sensor; 31-pressure relief hole. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] like Figures 1 to 3 As shown, the friction and wear prediction and fully enclosed test system of the friction interface of the highly gasifiable refrigerant pump of the present invention includes a motor 1, a rotating table 2 and a connecting seat 6, wherein the motor 1 is connected to the rotating table 2; the rotating table 2 is connected to the connecting seat 6, and a support frame 4 is provided at the bottom of the connecting seat 6 to improve the stability of the installation.

[0035] The connecting seat 6 is provided with an inlet 7, an outlet 8 and a cavity 9. The outlet 8 is connected to the cavity 9. A support platform 24 is provided in the cavity 9. A pressure relief hole 31 is provided on the support platform 24. The inlet 7 is connected to the cavity 9 through the pressure relief hole 31. The pressure relief hole 31 is used for pressure relief.

[0036] The rotating table 2 includes a rotating body, a rotating shaft 18 and a fixed frame 14. The rotating body is connected to the rotating shaft 18. The rotating body includes a skeleton 22, an end plate 23, a second magnet 13 and a fourth magnet 16. The second magnet 13 is embedded in the skeleton 22 through the end plate 23. The fourth magnet 16 is arranged on the skeleton 22 and is located on the opposite side of the end plate 23. The end plate 23 improves the stability and reliability of the installation of the second magnet 13. The second magnet 13 is used to realize the rotation of the skeleton 22 and the rotating shaft 18. The fourth magnet 16 is used to generate axial thrust to facilitate the collection of mechanical properties on the second support block 27. The skeleton 22 can drive the rotating shaft 18 to rotate synchronously.

[0037] A metal pair is provided between the end face of the rotating body and the rotating shaft 18, the fixed frame 14 is connected to the pump cover 5 of the rotating table 2, and support blocks are provided between the metal pair and the fixed frame 14 and the supporting table 24. The metal pair includes a first metal pair 20 and a second metal pair 28, and the support block includes a first support block 21 and a second support block 27. One end face of the rotating body is pressed against the fixed frame 14 through the first metal pair 20 and the first support block 21, and one end of the rotating shaft 18 is limited in the first limiting groove 17 of the fixed frame 14, and the other end face of the rotating body is pressed against the supporting table 24 through the second metal pair 28 and the second support block 27, and the other end of the rotating shaft 18 is limited in the second limiting groove 25 of the supporting table 24. Through the design of the first metal pair 20, the second metal pair 28, the first support block 21 and the second support block 27, not only the stability and reliability of the rotating body during rotation are improved, but also the parameters of the friction interface between the metal pair and the support block are convenient to detect, which is used to predict the cycle of system operation.

[0038] The support block is provided with a sensor. The sensor includes at least one of a temperature sensor 30, a mechanical sensor 29 and a vibration sensor. The temperature sensor 30 is used to detect the temperature of the friction interface, the mechanical sensor 29 is used to detect the force at the friction interface, and then adjust the magnetic force of the magnetic pole, and the vibration sensor is used to detect the vibration during the rotation process. The sensor in the present application is preferably installed on the second support block 27.

[0039] The rotating shaft 18 is provided with a channel 19 and a through hole 26 which are interconnected. The channel 19 is connected to the inlet 7. The cold medium is transported to the friction interface between the metal pair and the support block through the channel 19 and the through hole 26 through the inlet 7, and the sensor collects data to predict the friction wear between the metal pair and the support block. The channel 19 is connected to the inlet 7 through the second limiting groove 25, so that the cold medium is input into the channel 19 through the second limiting groove 25, and then transported to each friction interface by the channel 19 to achieve lubrication of the friction interface.

[0040] The rotating table 2 also includes a pump body 3 and a rotating cover 10. The pump body 3 is arranged between the motor 1 and the pump cover 5. The pump body 3, the pump cover 5 and the fixing frame 14 are connected to form a closed structure. The rotating cover 10 is connected to the output shaft 11 of the motor 1 and is limited in the closed structure. Through the design of the closed structure, not only can the leakage of the refrigerant medium be prevented, but also the stable rotation of the rotating cover 10 can be ensured to reduce resistance.

[0041] The first magnet 12 is distributed in a ring shape on the inner wall of the rotating cover 10, which is used to drive the second magnet 13 to rotate synchronously. The first magnet 12 and the second magnet 13 generate a magnetic force of mutual attraction, so that the first magnet 12 can rotate with the rotating cover 10 while driving the second magnet 13 and the rotating body to rotate, which is convenient for detecting and predicting the friction wear of the friction interface between the metal pair and the support block.

[0042] The inner wall of the rotating cover 10 is provided with a third magnet 15, which is close to the fourth magnet 16 and is used to generate magnetic force to realize axial force on the rotating body, so as to facilitate the detection of the mechanical properties of the friction interface between the metal pair and the support block.

[0043] Through the design of the above structure, not only can the temperature, pressure and vibration of the friction interface in the rotating table 2 be detected in real time to determine the degree of wear of the friction interface, but also the system operation cycle can be predicted based on the collected data to ensure the safe and effective operation of the system. The design of the channel 19 and the through hole 26 facilitates the input of the cold medium into the friction interface to play a lubricating role, and at the same time realizes the gas-liquid two-phase conversion process during the operation of the gas and liquid simulated fluorine pump.

[0044] When the present invention is actually used, the motor 1 is first started, and the rotating cover 10, the first magnet 12 and the third magnet 15 are driven to rotate synchronously, so that the rotating body rotates synchronously under the action of the magnetic force and is pressed downward in the axial direction, and then a refrigerant is introduced through the inlet 7. The refrigerant of the present application preferably uses Freon. The refrigerant enters the channel 19 of the rotating shaft 18 through the second limiting groove 25 on the support platform 24, and flows along the through hole 26 and the channel 19 between the second support block 27 and the second metal pair 28, and between the first support block 21 and the first metal pair 20. The temperature sensor 30, the mechanical sensor 29 and the vibration sensor are used to detect the temperature, force and vibration of the friction interface in real time, and predictions are made based on the collected data.

[0045] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. Prediction of friction and wear of friction interface of highly gasifiable refrigerant pump and fully enclosed test system, including Motor; A rotating table, the motor is connected to the rotating table; and a connecting seat, the rotating table being connected to the connecting seat; Features: The connecting seat is provided with an inlet, an outlet and a cavity, the outlet is connected to the cavity, and a support platform is provided in the cavity; The rotating table includes a rotating body, a rotating shaft and a fixed frame, the rotating body is connected to the rotating shaft, a metal pair is provided between the end surface of the rotating body and the rotating shaft, the fixed frame is connected to the pump cover of the rotating table, supporting blocks are respectively provided between the metal pair, the fixed frame and the supporting table, a sensor is provided on the supporting block, the rotating shaft is provided with mutually connected channels and through holes, the channel is connected to the inlet, and the cold medium is transported from the inlet to the friction interface between the metal pair and the supporting block by the channel and the through hole, and the sensor collects data to realize the prediction of the friction and wear between the metal pair and the supporting block.

2. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 1 is characterized by: The rotating body includes a frame, an end plate, a second magnet and a fourth magnet. The second magnet is embedded in the frame through the end plate, and the fourth magnet is arranged on the frame and located on the opposite side of the end plate.

3. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 1 is characterized in that: The metal pair includes a first metal pair and a second metal pair, and the support block includes a first support block and a second support block. One end surface of the rotating body is pressed against the fixed frame through the first metal pair and the first support block, and one end of the rotating shaft is limited in the first limiting groove of the fixed frame. The other end surface of the rotating body is pressed against the supporting platform through the second metal pair and the second support block, and the other end of the rotating shaft is limited in the second limiting groove of the supporting platform.

4. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 3 is characterized by: The passage is connected to the inlet via the second limiting groove.

5. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 1 is characterized in that: The sensor includes at least one of a temperature sensor, a mechanical sensor and a vibration sensor.

6. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 2 is characterized in that: The rotating table also includes a pump body and a rotating cover. The pump body is arranged between the motor and the pump cover. The pump body, the pump cover and the fixing frame are connected to form a closed structure. The rotating cover is connected to the output shaft of the motor and is limited in the closed structure.

7. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 6 is characterized by: The first magnets are distributed in an annular shape on the inner wall of the rotating cover, and are used to drive the second magnets to rotate synchronously.

8. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 6 is characterized by: A third magnet is disposed on the inner wall of the rotating cover. The third magnet is close to the fourth magnet and is used to generate magnetic force so as to realize axial force on the rotating body.

9. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 1 is characterized by: The support platform is provided with a pressure relief hole, and the inlet is connected to the cavity through the pressure relief hole.

10. The friction and wear prediction and fully enclosed test system for the friction interface of the highly gasifiable refrigerant pump according to claim 1, characterized in that: A supporting frame is provided at the bottom of the connecting seat.

Images