A temperature control device for alternative working fluid

Abstract

The present application provides a substitute working fluid temperature control device, including: a substitute working fluid circuit, including a front-end circuit and a terminal circuit; a substitute working fluid circulation heating system, connected to the front-end circuit, for heating the substitute working fluid; a first cooling heat exchanger, arranged on the front-end circuit; a chilled water supply device, connected to the first cooling heat exchanger, for supplying chilled water; a heat exchange amount control valve, arranged on the front-end circuit, for controlling the heat exchange amount between chilled water and the substitute working fluid; a second cooling heat exchanger, arranged on the front-end circuit, for connecting to low-pressure circulating water; a temperature sensor, arranged on the substitute working fluid circuit; a temperature control system, respectively connected to the heat exchange amount control valve and the temperature sensor, for controlling the heat exchange amount control valve according to the temperature detected by the temperature sensor. Through the technical solution of the present application, the temperature control problem of the substitute working fluid during the test process can be solved, and the temperature control requirements of a large-scale high-precision substitute working fluid regulation system can be met.

Description

Technical Field

[0001] The present application belongs to the technical field of temperature control, and in particular relates to a temperature control device for a substitute working fluid. Background Art

[0002] At present, during the development of fuel pump components, it is necessary to conduct running-in and performance debugging tests on the products. During the test, in order to simulate the working ability of the product under the real working medium, No. 10 aviation hydraulic oil with similar parameters such as viscosity to the working medium is generally used as a substitute working fluid for the test. In the conventional component test system, the test time is long due to the debugging of the test bench and the product, resulting in abnormal temperature of the substitute working fluid, which cannot simulate the working temperature of the product under the real working conditions, causing abnormal wear of the internal distribution friction pair of the fuel pump. In order to meet the temperature requirements, if the test system is shut down for cooling after working for a long time, it will cause the test efficiency to decrease, affecting the requirements of scientific research and production progress. Summary of the invention

[0003] This application aims to solve or improve the above technical problems.

[0004] To this end, an embodiment of the present application provides a substitute working fluid temperature control device.

[0005] To achieve the above-mentioned purpose, the present application provides a substitute working fluid temperature control device, including: a substitute working fluid circuit, including a front-end circuit and a terminal circuit; a substitute working fluid circulation heating system, connected to the front-end circuit, for heating the substitute working fluid; a first cooling heat exchanger, arranged on the front-end circuit; a chilled water supply device, connected to the first cooling heat exchanger, for supplying chilled water; a heat exchange amount control valve, arranged on the front-end circuit, for controlling the heat exchange amount between chilled water and the substitute working fluid; a second cooling heat exchanger, arranged on the front-end circuit, for being connected to low-pressure circulating water; a temperature sensor, arranged on the substitute working fluid circuit; a temperature control system, respectively connected to the heat exchange amount control valve and the temperature sensor, for controlling the heat exchange amount control valve according to the temperature detected by the temperature sensor.

[0006] According to the substitute working fluid temperature control device provided by the present application, it includes a substitute working fluid circuit, a substitute working fluid circulation heating system, a first cooling heat exchanger, a chilled water supply device, a heat exchange control valve, a second cooling heat exchanger, a temperature sensor and a temperature control system. The substitute working fluid circuit includes a front-end circuit and a terminal circuit, and the test product is arranged between the front-end circuit and the terminal circuit. The substitute working fluid circulation heating system is connected to the front-end circuit, and is used to realize the heating and circulation functions of the substitute working fluid under low temperature conditions, and to ensure the reliable supply of the substitute working fluid. Among them, during the test, in order to simulate the working capacity of the product under the real working fluid medium, a working fluid with parameters similar to the viscosity of the working medium is generally used as a substitute working fluid. The first cooling heat exchanger is arranged on the front-end circuit, and the chilled water supply device is connected to the first cooling heat exchanger for supplying chilled water. The control of the output temperature of the substitute working fluid can be ensured by the first cooling heat exchanger and the chilled water supply device, so as to meet the expected temperature requirements before the substitute working fluid enters the test product. The heat exchange control valve can realize the control of the heat exchange of the substitute working fluid and the chilled water. The control of the working oil temperature in the substitute working fluid circuit can be ensured by low-pressure circulating water and the second cooling heat exchanger. The temperature sensor is set on the substitute working fluid circuit, which can detect the substitute working fluid temperature in real time, and control the heat exchange control valve through the temperature control system to achieve the control of the substitute working fluid temperature. By adopting the substitute working fluid circulation heating system to complete the heating of the substitute working fluid, the method of forced cooling with front-end chilled water and secondary cooling with terminal low-pressure circulating water is used to solve the temperature control problem of the substitute working fluid during the test process, and meet the temperature control requirements of a large range of high-precision substitute working fluid regulation systems.

[0007] In addition, the technical solution provided by this application may also have the following additional technical features:

[0008] In some technical solutions, optionally, the heat exchange control valve includes a three-way ball valve, a first end of the three-way ball valve is connected to the substitute working fluid circulation heating system, a second end of the three-way ball valve is connected to the first cooling heat exchanger, and a third end of the three-way ball valve is connected to the terminal loop.

[0009] In this technical solution, the heat exchange control valve includes a three-way ball valve, a first end of the three-way ball valve is connected to the substitute working fluid circulation heating system, a second end of the three-way ball valve is connected to the first cooling heat exchanger, and a third end of the three-way ball valve is connected to the terminal loop, thereby realizing the control of the heat exchange of the substitute working fluid and chilled water.

[0010] In some technical schemes, optionally, the substitute working fluid temperature control device also includes: a first solenoid valve, which is arranged between the chilled water supply device and the first cooling heat exchanger, and is used to control the supply of chilled water; a second solenoid valve, which is respectively connected to the low-pressure circulating water and the second cooling heat exchanger, and is used to control the supply of low-pressure circulating water.

[0011] In this technical solution, the substitute working fluid temperature control device also includes a first solenoid valve and a second solenoid valve. The first solenoid valve is arranged between the chilled water supply device and the first cooling heat exchanger, and is used to control the supply of chilled water to achieve the supply of chilled water. The second solenoid valve is respectively connected to the low-pressure circulating water and the second cooling heat exchanger, and is used to control the supply of low-pressure circulating water.

[0012] In some technical solutions, optionally, the temperature control system is also connected to the first solenoid valve and the second solenoid valve respectively, and is used to control the first solenoid valve and the second solenoid valve according to the temperature detected by the temperature sensor.

[0013] In this technical solution, the temperature control system is also connected to the first solenoid valve and the second solenoid valve respectively, and is used to control the first solenoid valve and the second solenoid valve according to the temperature detected by the temperature sensor. The temperature of the substitute working fluid is detected in real time by the temperature sensor, and the actions of the first solenoid valve, the second solenoid valve, and the three-way ball valve are realized through the temperature control system test, thereby realizing the control of the substitute working fluid temperature.

[0014] In some technical solutions, optionally, the substitute working fluid temperature control device also includes: a first throttle valve, which is arranged between the chilled water supply device and the first solenoid valve; and a second throttle valve, which is arranged between the low-pressure circulating water and the second solenoid valve.

[0015] In this technical solution, the substitute working fluid temperature control device also includes a first throttle valve and a second throttle valve. The first throttle valve is arranged between the chilled water supply device and the first solenoid valve to control the flow rate of chilled water. The second throttle valve is arranged between the low-pressure circulating water and the second solenoid valve to control the flow rate of low-pressure circulating water.

[0016] In some technical solutions, optionally, the substitute working fluid temperature control device also includes: a first one-way valve, which is arranged between the first cooling heat exchanger and the first solenoid valve; and a second one-way valve, which is arranged between the second cooling heat exchanger and the second solenoid valve.

[0017] In this technical solution, the substitute working fluid temperature control device also includes a first one-way valve and a second one-way valve. The first one-way valve is arranged between the first cooling heat exchanger and the first solenoid valve, and the second one-way valve is arranged between the second cooling heat exchanger and the second solenoid valve.

[0018] In some technical solutions, optionally, the substitute working fluid temperature control device also includes a substitute working fluid box, and the substitute working fluid box is connected to the terminal loop; the substitute working fluid circulation heating system includes a low-pressure heating circulation pump.

[0019] In this technical solution, the substitute working fluid temperature control device also includes a substitute working fluid box, and the substitute working fluid box is connected to the terminal loop. The substitute working fluid circulation heating system includes a low-pressure heating circulation pump.

[0020] In some technical schemes, optionally, the temperature sensor includes a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor is arranged on the front-end circuit and is located between the three-way ball valve and the terminal circuit, the second temperature sensor is arranged on the terminal circuit and is located between the second cooling heat exchanger and the front-end circuit, and the third temperature sensor is arranged on the terminal circuit and is located between the second cooling heat exchanger and the substitute working fluid box.

[0021] In this technical solution, the temperature sensor includes a first temperature sensor, a second temperature sensor and a third temperature sensor. The first temperature sensor is arranged on the front-end circuit and is located between the three-way ball valve and the terminal circuit. The second temperature sensor is arranged on the terminal circuit and is located between the second cooling heat exchanger and the front-end circuit. The third temperature sensor is arranged on the terminal circuit and is located between the second cooling heat exchanger and the substitute working fluid box.

[0022] In some technical solutions, optionally, the first solenoid valve includes a two-position, two-way solenoid valve; and / or the second solenoid valve includes a two-position, two-way solenoid valve.

[0023] In this technical solution, the first solenoid valve comprises a two-position two-way solenoid valve. The second solenoid valve comprises a two-position two-way solenoid valve.

[0024] In some technical solutions, optionally, the three-way ball valve includes a pneumatically controlled three-way ball valve and / or an electrically controlled three-way ball valve.

[0025] In this technical solution, the three-way ball valve includes a pneumatically controlled three-way ball valve and / or an electrically controlled three-way ball valve.

[0026] The beneficial effects brought about by the present application are as follows: by adopting a substitute working fluid circulation heating system to complete the heating of the substitute working fluid, and using the method of forced cooling with front-end chilled water and secondary cooling with end low-pressure circulating water, the temperature control problem of the substitute working fluid during the test is solved, and the temperature control requirements of a large-scale high-precision substitute working fluid regulation system are met.

[0027] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the working principle of a substitute working fluid temperature control device according to an embodiment of the present application.

[0030] in, Figure 1 The corresponding relationship between the reference numerals and component names in the figure is:

[0031] 10: Alternative working fluid temperature control device; 110: Front-end loop; 120: Terminal loop; 130: Alternative working fluid circulation heating system; 140: First cooling heat exchanger; 150: Chilled water supply device; 160: Heat exchange amount control valve; 170: Second cooling heat exchanger; 182: First temperature sensor; 184: Second temperature sensor; 186: Third temperature sensor; 190: Temperature control system; 200: First solenoid valve; 210: Second solenoid valve; 220: First throttle valve; 230: Second throttle valve; 240: First check valve; 250: Second check valve; 260: Alternative working fluid box. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Refer to the following Figure 1 The temperature control device of a substitute working fluid according to some embodiments of the present application is described.

[0034] like Figure 1 As shown, an embodiment of the first aspect of the present application provides a substitute working fluid temperature control device 10, including a substitute working fluid circuit, a substitute working fluid circulation heating system 130, a first cooling heat exchanger 140, a chilled water supply device 150, a heat exchange amount control valve 160, a second cooling heat exchanger 170, a temperature sensor and a temperature control system 190. Specifically, the substitute working fluid circuit includes a front-end circuit 110 and a terminal circuit 120. The substitute working fluid circulation heating system 130 is connected to the front-end circuit 110 for heating the substitute working fluid. The first cooling heat exchanger 140 is arranged on the front-end circuit 110. The chilled water supply device 150 is connected to the first cooling heat exchanger 140 for supplying chilled water. The heat exchange amount control valve 160 is arranged on the front-end circuit 110 for controlling the heat exchange amount between chilled water and the substitute working fluid. The second cooling heat exchanger 170 is arranged on the front-end circuit 110 for connecting to low-pressure circulating water. The temperature sensor is arranged on the substitute working fluid circuit. The temperature control system 190 is connected to the heat exchange amount control valve 160 and the temperature sensor respectively, and is used to control the heat exchange amount control valve 160 according to the temperature detected by the temperature sensor.

[0035] The substitute working fluid temperature control device 10 provided in this embodiment includes a substitute working fluid circuit, a substitute working fluid circulation heating system 130, a first cooling heat exchanger 140, a chilled water supply device 150, a heat exchange control valve 160, a second cooling heat exchanger 170, a temperature sensor and a temperature control system 190. The substitute working fluid circuit includes a front-end circuit 110 and a terminal circuit 120, and the tested product is arranged between the front-end circuit 110 and the terminal circuit 120. The substitute working fluid circulation heating system 130 is connected to the front-end circuit 110, and is used to realize the heating and circulation functions of the substitute working fluid under low temperature conditions, and to ensure the reliable supply of the substitute working fluid. Among them, during the test, in order to simulate the working capacity of the product under the real working fluid medium, a working fluid with parameters similar to the viscosity of the working medium is generally used as a substitute working fluid. The first cooling heat exchanger 140 is arranged on the front-end circuit 110, and the chilled water supply device 150 is connected to the first cooling heat exchanger 140 for supplying chilled water. The first cooling heat exchanger 140 and the chilled water supply device 150 can ensure the control of the output temperature of the substitute working fluid, so as to meet the expected temperature requirements before the substitute working fluid enters the test product. The heat exchange control valve 160 can realize the control of the heat exchange of the substitute working fluid and the chilled water. The low-pressure circulating water and the second cooling heat exchanger 170 can ensure the control of the working oil temperature in the substitute working fluid circuit. The temperature sensor is arranged on the substitute working fluid circuit, which can detect the temperature of the substitute working fluid in real time, and control the action of the heat exchange control valve 160 through the temperature control system 190 to realize the control of the temperature of the substitute working fluid. By adopting the substitute working fluid circulation heating system 130 to complete the heating of the substitute working fluid, the method of forced cooling of the front-end chilled water and secondary cooling of the terminal low-pressure circulating water is used to solve the temperature control problem of the substitute working fluid during the test process, and meet the temperature control requirements of the large-scale high-precision substitute working fluid regulation system.

[0036] In some embodiments, optionally, the heat exchange amount control valve 160 includes a three-way ball valve, a first end of the three-way ball valve is connected to the substitute working fluid circulation heating system 130, a second end of the three-way ball valve is connected to the first cooling heat exchanger 140, and a third end of the three-way ball valve is connected to the terminal loop 120, thereby achieving control of the heat exchange amount of the substitute working fluid and chilled water.

[0037] In some embodiments, optionally, the substitute working fluid temperature control device 10 further includes a first solenoid valve 200 and a second solenoid valve 210. The first solenoid valve 200 is disposed between the chilled water supply device 150 and the first cooling heat exchanger 140, and is used to control the supply of chilled water to achieve the supply of chilled water. The second solenoid valve 210 is respectively connected to the low-pressure circulating water and the second cooling heat exchanger 170, and is used to control the supply of low-pressure circulating water.

[0038] In some embodiments, optionally, the temperature control system 190 is also connected to the first solenoid valve 200 and the second solenoid valve 210 respectively, and is used to control the first solenoid valve 200 and the second solenoid valve 210 according to the temperature detected by the temperature sensor. The temperature of the substitute working fluid is detected in real time by the temperature sensor, and the actions of the first solenoid valve 200, the second solenoid valve 210, and the three-way ball valve are tested by the temperature control system 190, so as to realize the control of the temperature of the substitute working fluid.

[0039] Specifically, the substitute working fluid temperature control device 10 includes a substitute working fluid heating circulation system, which realizes the heating and circulation functions of the substitute working fluid under low temperature conditions and ensures the reliable supply of the substitute working fluid. The substitute working fluid is forced to be cooled by the front-end chilled water to meet the expected temperature requirements before the substitute working fluid enters the test product. The front-end chilled water forced cooling adopts the chilled water supply device 150 and the first cooling heat exchanger 140 to realize the cooling of the substitute working fluid, and uses the first solenoid valve 200 to realize the supply of chilled water, and uses the electric-controlled three-way ball valve to realize the control of the heat exchange of the substitute working fluid and chilled water. After the substitute working fluid passes through the tested product, the temperature of the substitute working fluid at the product outlet rises due to the temperature rise generated by the tested product during operation. In order to further control the temperature of the outlet substitute working fluid, the terminal low-pressure circulating water is used for secondary cooling. The low-pressure circulating water enters the second cooling heat exchanger 170 through the second solenoid valve 210 to achieve temperature exchange with the substitute working fluid. After that, the substitute working fluid circulates and re-enters the substitute working fluid heating circulation system through the substitute working fluid box 260. During the test, the temperature of the substitute working fluid is detected in real time through multiple temperature sensors, and the actions of the first solenoid valve 200, the electric three-way ball valve, and the second solenoid valve 210 are tested through the temperature control system 190, thereby realizing the control of the substitute working fluid temperature.

[0040] In some embodiments, optionally, the substitute working fluid temperature control device 10 also includes a first throttle valve 220 and a second throttle valve 230. The first throttle valve 220 is arranged between the chilled water supply device 150 and the first solenoid valve 200 to control the flow of chilled water, and the second throttle valve 230 is arranged between the low-pressure circulating water and the second solenoid valve 210 to control the flow of low-pressure circulating water.

[0041] In some embodiments, optionally, the substitute working fluid temperature control device 10 also includes a first one-way valve 240 and a second one-way valve 250, the first one-way valve 240 is arranged between the first cooling heat exchanger 140 and the first solenoid valve 200, and the second one-way valve 250 is arranged between the second cooling heat exchanger 170 and the second solenoid valve 210.

[0042] In some embodiments, the substitute working fluid temperature control device 10 may further include a substitute working fluid tank 260, and the substitute working fluid tank 260 is connected to the terminal loop 120. The substitute working fluid circulation heating system 130 includes a low-pressure heating circulation pump.

[0043] In some embodiments, the temperature sensor may include a first temperature sensor 182, a second temperature sensor 184, and a third temperature sensor 186. The first temperature sensor 182 is provided on the front end loop 110 and is located between the three-way ball valve and the terminal loop 120. The second temperature sensor 184 is provided on the terminal loop 120 and is located between the second cooling heat exchanger 170 and the front end loop 110. The third temperature sensor 186 is provided on the terminal loop 120 and is located between the second cooling heat exchanger 170 and the substitute working fluid tank 260. The temperature control system 190 controls the actions of the first solenoid valve 200, the electric-controlled three-way ball valve, and the second solenoid valve 210 through the temperature of the substitute working fluid detected by the first temperature sensor 182, the second temperature sensor 184, and the third temperature sensor 186, thereby realizing the control of the temperature of the substitute working fluid.

[0044] In some embodiments, the first solenoid valve 200 may optionally include a two-position, two-way solenoid valve. The second solenoid valve 210 may include a two-position, two-way solenoid valve.

[0045] In some embodiments, optionally, the three-way ball valve includes a pneumatically controlled three-way ball valve or an electrically controlled three-way ball valve.

[0046] like Figure 1 As shown, according to a specific embodiment of the substitute working fluid temperature control device 10 provided by the present application, the existing substitute working fluid supply and regulation system is improved, a two-stage forced cooling temperature control strategy is adopted, and the method of using the low-pressure circulating water of the existing test bench system to control the terminal temperature is used to achieve the purpose of temperature control of the substitute working fluid. The substitute working fluid temperature control device 10 mainly includes: a temperature control system 190, a substitute working fluid circulation heating system 130, a cooling heat exchanger, a chilled water supply device 150, a gas-controlled three-way ball valve, a temperature sensor, and a solenoid valve. During the implementation process, a low-pressure heating circulation system is used to achieve the temperature increase demand of the substitute working fluid, and the substitute working fluid tank and pipeline are insulated. At the same time, the substitute working fluid temperature control device 10 ensures the control of the output temperature of the substitute working fluid through a water cooling unit and a cooling heat exchanger. The control of the working oil temperature in the substitute working fluid circuit is ensured by the low-pressure water source and cooling heat exchanger of the test station, and the working temperature of the substitute working fluid is ensured to be within the range of room temperature to 65°C, with a control accuracy of ±5°C.

[0047] Specifically, the substitute working fluid temperature control device 10 includes a substitute working fluid heating circulation system, which realizes the heating and circulation functions of the substitute working fluid under low temperature conditions and ensures the reliable supply of the substitute working fluid. The substitute working fluid is forced to be cooled by the front-end chilled water to meet the expected temperature requirements before the substitute working fluid enters the test product. The front-end chilled water forced cooling adopts the chilled water supply device 150 and the first cooling heat exchanger 140 to realize the cooling of the substitute working fluid, and uses the first solenoid valve 200 to realize the supply of chilled water, and uses the electric-controlled three-way ball valve to realize the control of the heat exchange of the substitute working fluid and chilled water. After the substitute working fluid passes through the tested product, the temperature of the substitute working fluid at the product outlet rises due to the temperature rise generated by the tested product during operation. In order to further control the temperature of the outlet substitute working fluid, the terminal low-pressure circulating water is used for secondary cooling. The low-pressure circulating water enters the second cooling heat exchanger 170 through the second solenoid valve 210 to achieve temperature exchange with the substitute working fluid. After that, the substitute working fluid circulates and re-enters the substitute working fluid heating circulation system through the substitute working fluid box 260. During the test, the temperature of the substitute working fluid is detected in real time through multiple temperature sensors, and the actions of the first solenoid valve 200, the electric three-way ball valve, and the second solenoid valve 210 are tested through the temperature control system 190 to achieve the control of the substitute working fluid temperature.

[0048] Beneficial effects: The temperature of the substitute working fluid is controllably regulated in the supply and regulation system, a low-pressure heating circulation pump is used to heat the substitute working fluid, and the method of forced cooling with front-end chilled water and secondary cooling with end-end low-pressure circulating water is used to solve the temperature control problem of the substitute working fluid during the test and meet the temperature control requirements of a large-scale, high-precision substitute working fluid regulation system.

[0049] The above is a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

[0050] In this application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0051] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the system or module referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present application.

[0052] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A temperature control device for a substitute working fluid, characterized in that: include: A substitute working fluid loop, comprising a front end loop (110) and a terminal loop (120); A substitute working fluid circulation heating system (130), connected to the front-end loop (110), for heating the substitute working fluid; A first cooling heat exchanger (140) is disposed on the front end circuit (110); A chilled water supply device (150), connected to the first cooling heat exchanger (140), for supplying chilled water; A heat exchange control valve (160) is provided on the front end circuit (110) and is used to control the heat exchange between the chilled water and the substitute working fluid; A second cooling heat exchanger (170) is provided on the front end circuit (110) and is used to be connected to the low-pressure circulating water; A temperature sensor is provided on the substitute working fluid circuit; A temperature control system (190) is connected to the heat exchange amount control valve (160) and the temperature sensor, respectively, and is used to control the heat exchange amount control valve (160) according to the temperature detected by the temperature sensor.

2. The substitute working fluid temperature control device according to claim 1, characterized in that: The heat exchange amount control valve (160) comprises a three-way ball valve, a first end of the three-way ball valve is connected to the substitute working fluid circulation heating system (130), a second end of the three-way ball valve is connected to the first cooling heat exchanger (140), and a third end of the three-way ball valve is connected to the terminal circuit (120).

3. The substitute working fluid temperature control device according to claim 1, characterized in that: The substitute working fluid temperature control device also includes: a first solenoid valve (200), the first solenoid valve (200) being arranged between the chilled water supply device (150) and the first cooling heat exchanger (140) and being used for controlling the supply of the chilled water; A second solenoid valve (210), wherein the second solenoid valve (210) is respectively connected to the low-pressure circulating water and the second cooling heat exchanger (170), and is used to control the supply of the low-pressure circulating water.

4. The substitute working fluid temperature control device according to claim 3, characterized in that: The temperature control system (190) is also connected to the first solenoid valve (200) and the second solenoid valve (210) respectively, and is used to control the first solenoid valve (200) and the second solenoid valve (210) according to the temperature detected by the temperature sensor.

5. The substitute working fluid temperature control device according to claim 3, characterized in that: The substitute working fluid temperature control device also includes: A first throttle valve (220), the first throttle valve (220) being arranged between the chilled water supply device (150) and the first solenoid valve (200); A second throttle valve (230), wherein the second throttle valve (230) is arranged between the low-pressure circulating water and the second solenoid valve (210).

6. The substitute working fluid temperature control device according to claim 3, characterized in that: The alternative working fluid temperature control device also includes: a first one-way valve (240), the first one-way valve (240) being arranged between the first cooling heat exchanger (140) and the first solenoid valve (200); A second one-way valve (250), wherein the second one-way valve (250) is disposed between the second cooling heat exchanger (170) and the second solenoid valve (210).

7. The substitute working fluid temperature control device according to any one of claims 2 to 6, characterized in that: The substitute working fluid temperature control device further comprises a substitute working fluid box (260), wherein the substitute working fluid box (260) is connected to the terminal circuit (120); The substitute working fluid circulation heating system (130) comprises a low-pressure heating circulation pump.

8. The substitute working fluid temperature control device according to claim 7, characterized in that: The temperature sensor includes a first temperature sensor (182), a second temperature sensor (184) and a third temperature sensor (186), wherein the first temperature sensor (182) is arranged on the front end circuit (110) and is located between the three-way ball valve and the terminal circuit (120), the second temperature sensor (184) is arranged on the terminal circuit (120) and is located between the second cooling heat exchanger (170) and the front end circuit (110), and the third temperature sensor (186) is arranged on the terminal circuit (120) and is located between the second cooling heat exchanger (170) and the substitute working fluid box (260).

9. The substitute working fluid temperature control device according to any one of claims 3 to 6, characterized in that: The first solenoid valve (200) comprises a two-position, two-way solenoid valve; and / or The second solenoid valve (210) comprises a two-position, two-way solenoid valve.

10. The substitute working fluid temperature control device according to claim 2, characterized in that: The three-way ball valve includes a pneumatically controlled three-way ball valve and / or an electrically controlled three-way ball valve.

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