A temperature control system for motor testing

Abstract

The utility model discloses a temperature control system for motor testing. The technical solution of the utility model is: including a circulating liquid pump, a motor workpiece, a heat exchanger, a three-way regulating valve and a hot liquid tank. The two ends of the motor workpiece are provided with a motor workpiece inlet pipe and a motor workpiece outlet pipe, and a bypass valve is provided between the workpiece inlet valve and the workpiece outlet valve; the outlet of the circulating liquid pump, the workpiece inlet valve, the workpiece outlet valve, the heat exchanger, the three-way regulating valve and the inlet of the circulating liquid pump are connected in sequence through pipelines to form a main circulation loop, the three-way regulating valve is respectively connected to the inlet of the circulating liquid pump and the heat exchanger, and the third interface of the three-way regulating valve is also connected to the main outlet of the hot liquid tank, and the hot liquid in the hot liquid tank and the cold liquid flowing through the heat exchanger are merged and mixed into the circulating liquid pump through the three-way regulating valve. The solution provided by the utility model is simple in structure, wide in temperature control range, high in temperature control accuracy, and precisely controllable in flow and pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to a temperature control system for motor testing. Background Art

[0002] Companies engaged in motor production need to conduct various parameter tests on their products to check whether the various performance of the motors meet national standards and determine whether the mechanical and electrical parameters of the motors can meet the standard requirements. The motor test system provides sufficient data support for the design and quality inspection of the motor system. The correctness and accuracy of its test data are important means to verify the motor design and ensure the quality of the motor. The motor performance test system is generally composed of a dynamometer, a dynamometer controller, a test power supply, a dynamometer stand, a fixture, a temperature control medium system, and measurement and control software and hardware. There are many types of temperature control systems on the market, but there are few products that can meet the special needs of the motor testing industry. There are generally problems such as poor product targeting, large limitations, narrow temperature control range, and low temperature control accuracy. Utility Model Content

[0003] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a temperature control system for motor testing which has a simple structure, a wide temperature control range, high temperature control accuracy, and precisely controllable flow and pressure.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temperature control system for motor testing, comprising a circulating liquid pump, a motor workpiece, a heat exchanger, a three-way regulating valve and a hot liquid tank, wherein the two ends of the motor workpiece are provided with a motor workpiece inlet pipe and a motor workpiece outlet pipe, the motor workpiece inlet pipe is provided with a workpiece inlet valve, the motor workpiece outlet pipe is provided with a workpiece outlet valve, and a bypass valve is provided between the workpiece inlet valve and the workpiece outlet valve; the outlet of the circulating liquid pump, the workpiece inlet valve, the workpiece outlet valve, the heat exchanger, the three-way regulating valve and the inlet of the circulating liquid pump are connected in sequence through pipelines to form a main circulation loop, the three-way regulating valve is respectively connected to the inlet of the circulating liquid pump and the heat exchanger, the third interface of the three-way regulating valve is also connected to the main outlet of the hot liquid tank, and the hot liquid in the hot liquid tank and the cold liquid flowing through the heat exchanger are merged and mixed into the circulating liquid pump through the three-way regulating valve; the motor workpiece inlet pipe is provided with a flow meter, a workpiece inlet pressure sensor and a workpiece inlet temperature probe, and the motor workpiece outlet pipe is provided with a workpiece outlet temperature probe and a workpiece outlet pressure sensor.

[0005] Preferably, the hot liquid tank comprises a heating element, a hot liquid tank temperature probe and a hot liquid tank discharge valve, the secondary inlet of the hot liquid tank is connected to a liquid replenishing tank, and the main inlet of the hot liquid tank is connected to an outlet valve of the motor workpiece.

[0006] Preferably, the fluid replenishment tank includes a fluid replenishment port, a liquid level probe and a fluid replenishment tank discharge valve.

[0007] Preferably, the inlet and outlet of the heat exchanger are respectively provided with a heat exchanger inlet temperature probe and a heat exchanger outlet temperature probe.

[0008] Preferably, a hot liquid tank main outlet temperature probe is provided at the main outlet of the hot liquid tank.

[0009] Preferably, the heat exchanger is connected to a chilled water circuit cold source.

[0010] The utility model has the following advantages over the prior art, wherein the outlet of the circulating liquid pump, the inlet and outlet valves of the motor workpiece, the heat exchanger, the three-way regulating valve and the inlet of the circulating liquid pump are connected in sequence through pipelines to form a main circulation loop, the third interface of the three-way regulating valve is connected to the main outlet of the hot liquid tank, and the main outlet of the replenishing tank is connected to the secondary inlet of the hot liquid tank. The temperature control system can provide a stable liquid outlet flow or pressure. Through the action of the three-way regulating valve, the hot liquid of the hot liquid tank and the cold liquid flowing through the heat exchanger are blended in a certain proportion, so that the outlet liquid temperature is accurately stabilized within a certain range, meeting the flow rate, temperature and other working conditions required for the motor workpiece test. The working condition parameters of the refrigerant entering the motor workpiece are monitored by the flow meter, the workpiece inlet pressure sensor and the workpiece inlet temperature probe, and the outlet temperature probe and the workpiece outlet pressure sensor monitor the working condition parameters of the refrigerant at the outlet of the motor workpiece, so that the temperature of the motor workpiece during the test can be accurately controlled. The bypass valve is arranged between the workpiece inlet valve and the workpiece outlet valve for the purpose of regulating the pressure and flow of the motor workpiece inlet pipeline and the motor workpiece outlet pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of a temperature control system for motor testing.

[0012] In the figure: 1. Circulating liquid pump; 2. Bypass valve; 3. Flow meter; 4. Workpiece inlet pressure sensor; 5. Workpiece inlet temperature probe; 6. Workpiece inlet valve; 7. Motor workpiece; 8. Workpiece outlet valve; 9. Workpiece outlet temperature probe; 10. Workpiece outlet pressure sensor; 11. Hot liquid tank; 11-1. Heating element; 11-2. Hot liquid tank main outlet temperature probe; 11-3. Hot liquid tank discharge valve; 12. Liquid replenishment tank; 12-1. Liquid replenishment port; 12-2. Liquid level probe; 12-3. Liquid replenishment tank discharge valve; 13. Heat exchanger inlet temperature probe; 14. Heat exchanger; 15. Heat exchanger outlet temperature probe; 16. Three-way regulating valve; 17. Hot liquid tank main outlet temperature probe; 18. Chilled water circuit cold source. DETAILED DESCRIPTION

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1As shown, a temperature control system for motor testing includes a circulating liquid pump 1, a motor workpiece 7, a heat exchanger 14, a three-way regulating valve 16 and a hot liquid tank 11, wherein the motor workpiece 7 is provided with a motor workpiece 7 inlet pipe and a motor workpiece 7 outlet pipe at both ends, the motor workpiece 7 inlet pipe is provided with a workpiece inlet valve 6, the motor workpiece 7 outlet pipe is provided with a workpiece outlet valve 8, and a bypass valve 2 is provided between the workpiece inlet valve 6 and the workpiece outlet valve 8; the outlet of the circulating liquid pump 1, the workpiece inlet valve 6, the workpiece outlet valve 8, the heat exchanger 14, the three-way regulating valve 16 and the circulating liquid pump 1 The inlets are connected in sequence through pipelines to form a main circulation loop, the three-way regulating valve 16 is respectively connected to the inlet of the circulating liquid pump 1 and the heat exchanger 14, the third interface of the three-way regulating valve is also connected to the main outlet of the hot liquid tank 11, the hot liquid in the hot liquid tank 11 and the cold liquid flowing through the heat exchanger 14 are converged and mixed through the three-way regulating valve 16 to enter the circulating liquid pump 1; the inlet pipeline of the motor workpiece 7 is provided with a flow meter 3, a workpiece inlet pressure sensor 4 and a workpiece inlet temperature probe 5, and the outlet pipeline of the motor workpiece 7 is provided with a workpiece outlet temperature probe 9 and a workpiece outlet pressure sensor 10.

[0015] The present scheme is a temperature control system for testing a motor, wherein the outlet of the circulating liquid pump 1, the inlet and outlet valves of the motor workpiece 7, the heat exchanger 14, the three-way regulating valve 16 and the inlet of the circulating liquid pump 1 are connected in sequence through pipelines to form a main circulation loop, the third interface of the three-way regulating valve 16 is connected to the main outlet of the hot liquid tank 11, and the main outlet of the replenishing tank 12 is connected to the secondary inlet of the hot liquid tank 11. The temperature control system can provide a stable liquid outlet flow or pressure. Through the action of the three-way regulating valve 16, the hot liquid of the hot liquid tank 11 and the cold liquid flowing through the heat exchanger 14 are blended in a certain proportion, so that the outlet liquid temperature is accurately stabilized within a certain range, meeting the flow rate, temperature and other working conditions required for the test of the motor workpiece 7. The working condition parameters of the refrigerant entering the motor workpiece 7 are monitored by the flowmeter 3, the workpiece inlet pressure sensor 4 and the workpiece inlet temperature probe 5, and the outlet temperature probe and the workpiece outlet pressure sensor 10 monitor the working condition parameters of the refrigerant at the outlet of the motor workpiece 7, so that the temperature of the motor workpiece 7 during the test can be accurately controlled. A bypass valve 2 is provided between the workpiece inlet valve 6 and the workpiece outlet valve 8 to regulate the pressure and flow of the motor workpiece 7 inlet pipeline and the motor workpiece 7 outlet pipeline.

[0016] Preferably, the hot liquid tank 11 includes a heating element 11-1, a hot liquid tank temperature probe 11-2 and a hot liquid tank discharge valve 11-3, the secondary inlet of the hot liquid tank 11 is connected to a liquid replenishing tank 12, and the main inlet of the hot liquid tank is connected to the workpiece outlet valve 8. The hot liquid tank 11 can quickly and accurately heat the liquid through the heating element 11-1 and the hot liquid tank temperature probe 11-2, and the setting of the liquid replenishing tank 12 can provide liquid to the hot liquid tank 11 in time.

[0017] Preferably, the liquid replenishment tank 12 includes a liquid replenishment port 12 - 1 , a liquid level probe 12 - 2 and a liquid replenishment tank discharge valve 12 - 3 .

[0018] Preferably, the inlet and outlet of the heat exchanger 14 are respectively provided with a heat exchanger inlet temperature probe 13 and a heat exchanger outlet temperature probe 15. The heat exchanger inlet temperature probe 14 and the heat exchanger outlet temperature probe 15 improve the heat exchange accuracy.

[0019] Preferably, a hot liquid tank main outlet temperature probe 11 - 2 is provided at the main outlet of the hot liquid tank 11 .

[0020] Preferably, the heat exchanger 14 is connected to a chilled water circuit cold source 18. The chilled water circuit cold source 18 provides a cold source for the heat exchanger 14.

[0021] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A temperature control system for motor testing, characterized in that: It includes a circulating liquid pump, a motor workpiece, a heat exchanger, a three-way regulating valve and a hot liquid tank. The two ends of the motor workpiece are provided with a motor workpiece inlet pipe and a motor workpiece outlet pipe, the motor workpiece inlet pipe is provided with a workpiece inlet valve, the motor workpiece outlet pipe is provided with a workpiece outlet valve, and a bypass valve is provided between the workpiece inlet valve and the workpiece outlet valve; the outlet of the circulating liquid pump, the workpiece inlet valve, the workpiece outlet valve, the heat exchanger, the three-way regulating valve and the inlet of the circulating liquid pump are connected in sequence through pipelines to form a main circulation loop, the three-way regulating valve is respectively connected to the inlet of the circulating liquid pump and the heat exchanger, the third interface of the three-way regulating valve is also connected to the main outlet of the hot liquid tank, the hot liquid in the hot liquid tank and the cold liquid flowing through the heat exchanger are converged and mixed into the circulating liquid pump through the three-way regulating valve; the motor workpiece inlet pipe is provided with a flow meter, a workpiece inlet pressure sensor and a workpiece inlet temperature probe, and the motor workpiece outlet pipe is provided with a workpiece outlet temperature probe and a workpiece outlet pressure sensor.

2. A temperature control system for motor testing according to claim 1, characterized in that: The hot liquid tank comprises a heating element, a hot liquid tank temperature probe and a hot liquid tank discharge valve. The secondary inlet of the hot liquid tank is connected to a liquid replenishing tank, and the main inlet of the hot liquid tank is connected to an outlet valve of a motor workpiece.

3. A temperature control system for motor testing according to claim 2, characterized in that: The liquid replenishment tank comprises a liquid replenishment port, a liquid level probe and a liquid replenishment tank discharge valve.

4. A temperature control system for motor testing according to claim 1, characterized in that: The inlet and outlet of the heat exchanger are respectively provided with a heat exchanger inlet temperature probe and a heat exchanger outlet temperature probe.

5. The temperature control system for motor testing according to claim 1, characterized in that: A hot liquid tank main outlet temperature probe is provided at the main outlet of the hot liquid tank.

6. A temperature control system for motor testing according to claim 1, characterized in that: The heat exchanger is connected to a chilled water circuit cold source.

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