A comprehensive hot and cold water unit test system

Abstract

The present application provides a comprehensive hot and cold water unit test system, which relates to the technical field of hot and cold water units. The comprehensive hot and cold water unit test system includes: a constant temperature component, an air handling unit arranged in a test room, a chilled water system having a chilled water inlet pipeline and a chilled water outlet pipeline, and a cooling water system having a cooling water inlet pipeline, a cooling water outlet pipeline, a first branch, a second branch and a cooling tower, wherein the air handling unit, the chilled water system and the cooling water system are all connected to the constant temperature component. The present application is provided with an air handling unit, a cooling water system and a chilled water system, and the air handling unit can provide a stable working condition for the tested hot and cold water unit, and can realize the test of the air-cooled or evaporative cooling type of the tested hot and cold water unit through the chilled water system and the air handling unit; and can realize the test of the water-cooled type of the tested hot and cold water unit through the chilled water system and the cooling water system.

Description

Technical Field

[0001] The present application relates to the technical field of cold and hot water units, and in particular to a comprehensive cold and hot water unit testing system. Background Art

[0002] Hot and cold water units can be divided into air-cooled, evaporative-cooled and water-cooled types, because air-cooled, evaporative-cooled and water-cooled hot and cold water units have different requirements for the test system. For example, the air-cooled test has a small cooling capacity, but requires high temperature and large circulating air volume. The evaporative cooling test requires large dehumidification and humidification capabilities, and the water-cooled test does not require an air side system.

[0003] However, the existing test system is not compatible with the three different types of hot and cold water units: air cooling, evaporative cooling, and water cooling. Summary of the invention

[0004] The purpose of the present application is to provide a comprehensive hot and cold water unit testing system, aiming to solve the problem that the existing testing system is not compatible with three different types of hot and cold water units: air cooling, evaporative cooling, and water cooling.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides a comprehensive cold and hot water unit test system, which has a closed test room, in which the cold and hot water units to be tested are arranged, including:

[0007] Thermostatic components;

[0008] An air handling unit is arranged in the test room to process the air state of the tested cold and hot water unit, and the surface cooler of the air handling unit is connected to the constant temperature component through a circulation pipeline;

[0009] A chilled water system, comprising a chilled water inlet pipe and a chilled water outlet pipe, wherein one end of the chilled water inlet pipe is connected to the thermostatic assembly, and the other end of the chilled water inlet pipe is connected to the chilled water inlet of the tested hot and cold water unit, one end of the chilled water outlet pipe is connected to the thermostatic assembly, and the other end of the chilled water outlet pipe is connected to the chilled water outlet of the tested hot and cold water unit;

[0010] A cooling water system, comprising a cooling water inlet pipeline, a cooling water outlet pipeline, a first branch, a second branch and a cooling tower, wherein one end of the cooling water inlet pipeline is connected to the thermostatic component, and the other end of the cooling water inlet pipeline is connected to the cooling water inlet of the tested hot and cold water unit, one end of the cooling water outlet pipeline is connected to the thermostatic component, and the other end of the cooling water outlet pipeline is connected to the cooling water outlet of the tested hot and cold water unit, the cooling tower is connected to the cooling water outlet pipeline, one end of the first branch is connected to the cooling water inlet pipeline, and the other end of the first branch is connected to the cooling water outlet pipeline between the cooling tower and the thermostatic component, one end of the second branch is connected to the cooling water inlet pipeline, and the other end of the second branch is connected to the cooling water outlet pipeline between the cooling tower and the cooling water outlet.

[0011] The present application is provided with an air handling unit, a cooling water system and a chilled water system. The air handling unit can provide a stable working condition for the tested hot and cold water units. When the tested hot and cold water units are air-cooled or evaporatively cooled, the tested hot and cold water units can be connected to the constant temperature component through the chilled water system, and then cooperated with the air handling unit to realize the test of the tested hot and cold water units; when the tested hot and cold water units are water-cooled, the tested hot and cold water units can be connected to the constant temperature component through the chilled water system and the cooling water system to realize the test of the tested hot and cold water units.

[0012] Furthermore, the air handling unit includes a cooler, a refrigeration system, a heater, a humidifier and a blower arranged in sequence, and the side of the air handling unit close to the cooler is configured as an air inlet, and the side of the air handling unit close to the blower is configured as an air outlet.

[0013] By sucking air from the surface cooler, processing it through the refrigeration system, heater and humidifier, and then blowing it out from the blower, the air handling unit can provide a stable operating condition for the tested hot and cold water units, and the air can be reheated by the heat released by the refrigeration system to complete energy heat recovery and reduce the investment in electric heating.

[0014] Furthermore, the circulation pipeline includes a first circulation branch, a second circulation branch and a plate converter, the plate converter is connected to both the first circulation branch and the second circulation branch, and a variable frequency water pump is provided on the first circulation branch.

[0015] By designing the circulation pipeline, the excess cooling capacity in the thermostatic component can be provided to the surface cooler, thereby reducing the electrical heating input of the thermostatic component and lowering the testing cost.

[0016] Furthermore, the chilled water inlet pipeline has a first pump body and a first three-way regulating valve, the first three-way regulating valve is connected to the chilled water outlet pipeline through a pipeline, the first pump body is arranged between the first three-way regulating valve and the chilled water inlet, and the chilled water outlet pipeline has a fifth stop valve.

[0017] By designing the first three-way regulating valve, the water coming out of the chilled water outlet pipe is mixed with the water in the chilled water inlet pipe, and then enters the tested hot and cold water unit, thereby reducing the energy input of the constant temperature component and achieving energy saving and high efficiency.

[0018] Furthermore, the cooling water inlet pipeline has a second pump body, a third pump body, a fourth stop valve and a second three-way regulating valve arranged between the second pump body and the third pump body. The fourth stop valve is arranged between the second pump body and the second three-way regulating valve, and the second three-way regulating valve is connected to the cooling water outlet pipeline through a pipeline.

[0019] Furthermore, the cooling water outlet pipeline has a third stop valve and an eighth stop valve, and the third stop valve and the eighth stop valve are both arranged between the cooling tower and the cooling water outlet.

[0020] Through the cooperation of the third stop valve and the eighth stop valve, the cooling water system and the chilled water system can be connected, thereby reducing the cooling and heating power of the constant temperature component.

[0021] Furthermore, the first branch and the second branch are both connected between the second pump body and the fourth stop valve, the first branch has a first stop valve, the second branch has a second stop valve, and one end of the second branch is connected between the third stop valve and the cooling tower.

[0022] Furthermore, the integrated hot and cold water unit testing system also includes a mixing pipeline, which includes a first mixing branch and a second mixing branch, one end of the first mixing branch is connected between the fifth stop valve and the chilled water outlet, the other end of the first mixing branch is connected between the eighth stop valve and the pipeline, one end of the second mixing branch is connected between the eighth stop valve and the cooling water outlet, and the other end of the second mixing branch is connected to the chilled water outlet pipeline between the fifth stop valve and the pipeline.

[0023] By designing the first mixing branch and the second mixing branch, the cooling water system and the chilled water system can be connected, thereby reducing the power of the constant temperature component and the heat, and to a certain extent, reducing the investment cost.

[0024] Furthermore, the first mixing branch has a sixth stop valve, and the second mixing branch has a seventh stop valve and a fourth pump body.

[0025] Furthermore, the thermostatic component includes a thermostatic water tank, a heating element connected to the thermostatic water tank, and a chiller connected to the thermostatic water tank, and the chiller is connected to the thermostatic water tank and is provided with a fifth pump body.

[0026] Compared with the prior art, the beneficial effects of the present application are as follows: the present application is provided with an air handling unit, a cooling water system and a chilled water system, and the air handling unit can provide a stable working condition for the tested hot and cold water units. When the tested hot and cold water units are air-cooled or evaporatively cooled, the tested hot and cold water units can be connected to the constant temperature component through the chilled water system to achieve the test of the tested hot and cold water units; when the tested hot and cold water units are water-cooled, the tested hot and cold water units can be connected to the constant temperature component through the chilled water system and the cooling water system to achieve the test of the tested hot and cold water units. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For users of ordinary technology in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the principle of a comprehensive hot and cold water unit testing system disclosed in an embodiment of the present application.

[0029] Reference numerals

[0030] 100, constant temperature assembly; 101, constant temperature water tank; 102, chiller; 103, heating element; 104, fifth pump body; 200, air handling unit; 201, surface cooler; 202, evaporator; 203, condenser; 204, compression condensing unit; 205, heater; 206, humidifier; 207, blower; 300, chilled water system; 301, chilled water inlet pipeline; 3011, first three-way regulating valve; 3012, first pump body; 302, chilled water outlet pipeline; 3021, fifth stop valve; 400, cooling water system; 401, cooling water inlet pipeline; 4011, second pump body; 4012, The fourth stop valve; 4013, the second three-way regulating valve; 4014, the third pump body; 402, the cooling water outlet pipeline; 4021, the eighth stop valve; 4022, the third stop valve; 403, the cooling tower; 404, the first branch; 4041, the first stop valve; 405, the second branch; 4051, the second stop valve; 500, the first mixing branch; 501, the sixth stop valve; 502, the second mixing branch; 503, the seventh stop valve; 504, the fourth pump body; 600, the tested hot and cold water unit; 700, the test room; 800, the first circulation branch; 801, the plate exchanger; 802, the second circulation branch; 803, the variable frequency water pump. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by users of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technical users in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Example

[0038] like Figure 1 As shown, Figure 1 It is a structural schematic diagram of a comprehensive cold and hot water unit test system disclosed in an embodiment of the present application; the present application provides a comprehensive cold and hot water unit test system, the comprehensive cold and hot water unit test system has a closed test room 700, the test room 700 is arranged with a tested cold and hot water unit 600, including: a constant temperature component 100, an air handling unit 200, a chilled water system 300 and a cooling water system 400, the constant temperature component 100 can be used to provide the tested cold and hot water unit 600 with a water side working condition, that is, the inlet and outlet water temperature, the air handling unit 200 is mainly used to process the air state of the test room 700, and provide a stable working condition for the tested cold and hot water unit 600, which refers to the ambient dry-bulb temperature and wet-bulb temperature, the air handling unit 200 is mainly used to test evaporative cooling type and air-cooled cold and hot water units, the chilled water system 300 is mainly used to provide cold and hot water for cooling or heating, and the cooling water system 400 is mainly used for water-cooled cold and hot water units.

[0039] In the present application, the constant temperature component 100 includes a constant temperature water tank 101, a heating element 103 connected to the constant temperature water tank 101, and a chiller 102 connected to the constant temperature water tank 101. The chiller 102 is connected to the constant temperature water tank 101 and is provided with a fifth pump body 104.

[0040] Exemplarily, the constant temperature water tank 101 can be used to provide chilled water or cooling water, and the chiller 102, the heating element 103 and the cooling tower 403 of the cooling water system 400 are used to balance the heat of the constant temperature water tank 101, so that the constant temperature water tank 101 can provide stable chilled water and cooling water.

[0041] During the design process, the inventor discovered that the existing hot and cold water unit test systems include separate testing of water-cooled hot and cold water units, separate testing of four-air cooling and air-cooling hot and cold water units, and separate testing of evaporative cooling and hot and cold water units, but there is no test system that can simultaneously test air-cooled, evaporative cooling, and water-cooled hot and cold water units. Therefore, the three different cooling methods of hot and cold water units have different requirements for the test system. For example, the test of air-cooled hot and cold water units requires a small cooling capacity, but requires a high temperature and a large circulating air volume; the test of evaporative cooling hot and cold water units requires a large dehumidification and humidification capacity; the test of water-cooled hot and cold water units does not require an air side system, but conventional hot and cold water units have a large cooling capacity and a large cooling water system configuration.

[0042] In view of this, if Figure 1 As shown, the air handling unit 200 in the present application is arranged in the test room 700 to process the air state of the tested hot and cold water unit 600, and the surface cooler 201 of the air handling unit 200 is connected to the constant temperature component 100 through a circulation pipeline.

[0043] Exemplarily, the air handling unit 200 and the tested hot and cold water unit 600 can be arranged in the same enclosed space, or the air handling unit 200 and the tested hot and cold water unit 600 can be separated, that is, the test room 700 has a first enclosed space and a second enclosed space, the first enclosed space and the second enclosed space are separated, the air handling unit 200 is arranged in the first enclosed space, and the tested hot and cold water unit 600 is arranged in the second enclosed space, an air outlet is arranged between the first enclosed space and the second enclosed space, and an air inlet is arranged on the side of the first enclosed space away from the second enclosed space, and the air outlet is used for the air handling unit 200 to process the air state of the second enclosed space, so as to provide a stable working condition for the tested hot and cold water unit 600.

[0044] It should be noted that at least one air handling unit 200 is provided. When two or more air handling units 200 are provided, the two air handling units 200 are arranged in parallel and are independent of each other, wherein both of the air handling units 200 can be connected to the constant temperature water tank 101 of the constant temperature component 100 through the circulation pipeline.

[0045] Furthermore, the air handling unit 200 includes a cooler 201, a refrigeration system, a heater 205, a humidifier 206 and a blower 207 which are arranged in sequence. The side of the air handling unit 200 close to the cooler 201 is configured as an air inlet, and the side of the air handling unit 200 close to the blower 207 is configured as an air outlet.

[0046] It can be understood that the refrigeration system includes an evaporator 202, a condenser 203 and a compression condensing unit 204. The evaporator 202 is arranged between the condenser 203 and the surface cooler 201, the condenser 203 is arranged between the evaporator 202 and the heater 205, and the compression condensing unit 204 is arranged on the outside of the first enclosed space. When the air handling unit 200 works normally, the air of the test room 700 enters from the air inlet, passes through the surface cooler 201, the evaporator 202, the condenser 203, the heater 205, the humidifier 206 in turn, and finally the treated air is blown from the air outlet to the second enclosed space by the air blower 207.

[0047] Among them, the cooling capacity of the surface cooler 201 mainly utilizes the excess cooling capacity of the constant temperature water tank 101. The surface cooler 201 is connected to the constant temperature water tank 101 by the circulation pipeline, which can reduce the electric heating input of the constant temperature water tank 101. The surface cooler 201 mainly completes the process of isohypsum cooling, increases the relative humidity of the air before entering the evaporator 202, and is beneficial to improve the subsequent dehumidification capacity of the evaporator 202. After that, the air that has been initially cooled by the surface cooler 201 will undergo secondary cooling and dehumidification by the evaporator 202. The temperature and humidity of the air will be lower than the working conditions, and it needs to be compensated by the reheating of the condenser 203, the heater 205 and the humidifier 206 to obtain the air required by the second enclosed space.

[0048] Exemplarily, the present application uses the heat released by the condenser 203 in the refrigeration system for reheating, completes energy heat recovery, and reduces the input of electric heating. For example, under standard operating conditions, the air inlet condition (dry-bulb temperature) of the tested hot and cold water unit 600 is 35 / 24°C, which becomes 46.5 / 27°C after the tested hot and cold water unit 600 releases heat, and becomes 40 / 25°C under the isohypsum cooling effect of the surface cooler 201, and then becomes 23 / 22°C under the dehumidification and cooling effect of the evaporator 202, and finally becomes 35 / 24°C under the action of the condenser 203, the heater 205 and the humidifier 206.

[0049] By sucking air from the surface cooler 201, processing it through the refrigeration system, heater 205 and humidifier 206, and then blowing it out from the blower 207, the air handling unit 200 can provide a stable working condition for the tested hot and cold water unit 600, and the air can be reheated by the heat released by the refrigeration system to complete energy heat recovery and reduce the investment in electric heating.

[0050] like Figure 1 As shown, the circulation pipeline includes a first circulation branch 800 , a second circulation branch 802 and a plate converter 801 . The plate converter 801 is connected to both the first circulation branch 800 and the second circulation branch 802 . A variable frequency water pump 803 is provided on the first circulation branch 800 .

[0051] Exemplarily, at least two variable frequency water pumps 803 are provided, one variable frequency water pump 803 is provided between the plate changer 801 and the constant temperature water tank 101, and the other variable frequency water pump 803 is provided between the plate changer 801 and the air handling unit 200, wherein the number of the variable frequency water pumps 803 can be set according to actual conditions.

[0052] By designing the circulation pipeline, the excess cooling capacity in the thermostatic component 100 can be provided to the surface cooler 201, thereby reducing the electric heating input of the thermostatic component 100 and lowering the testing cost.

[0053] The chilled water system 300 in this scheme has a chilled water inlet pipe 301 and a chilled water outlet pipe 302, one end of the chilled water inlet pipe 301 is connected to the constant temperature component 100, and the other end of the chilled water inlet pipe 301 is connected to the chilled water inlet of the tested hot and cold water unit 600, one end of the chilled water outlet pipe 302 is connected to the constant temperature component 100, and the other end of the chilled water outlet pipe is connected to the chilled water outlet of the tested hot and cold water unit 600.

[0054] Furthermore, the chilled water inlet pipeline 301 has a first pump body 3012 and a first three-way regulating valve 3011, the first three-way regulating valve 3011 is connected to the chilled water outlet pipeline 302 through a pipeline, the first pump body 3012 is arranged between the first three-way regulating valve 3011 and the chilled water inlet, and the chilled water outlet pipeline 302 has a fifth stop valve 3021.

[0055] Exemplarily, when the chilled water system 300 is working, the water in the constant temperature water tank 101 enters from one end of the chilled water inlet pipe, passes through the first three-way regulating valve 3011 and the first pump body 3012 in sequence, and finally flows into the chilled water inlet of the tested hot and cold water unit 600, flows out from the chilled water outlet of the tested hot and cold water unit 600, passes through the fifth stop valve 3021, and part of the water flows into the first three-way valve through the pipeline, and is connected with the chilled water outlet of the tested hot and cold water unit 600. The water in the water inlet pipeline 301 is mixed and passes through the first pump body 3012 again, and the other part of the water enters the constant temperature water tank 101; for example, under standard working conditions, the chilled water inlet and outlet water temperatures of the tested hot and cold water unit 600 are required to be 12 / 7°C, and the outlet water temperature of the constant temperature water tank 101 is higher than 12°C, and is mixed with the return water of 7°C in the pipeline to become a stable water temperature of 12°C, and is sent to the tested hot and cold water unit 600 for use through the first pump body 3012.

[0056] By designing the first three-way regulating valve 3011, the water coming out of the chilled water outlet pipe 302 is mixed with the water in the chilled water inlet pipe 301, and then enters the tested hot and cold water unit 600, thereby reducing the energy input of the constant temperature component 100 and achieving energy saving and high efficiency.

[0057] The cooling water system 400 in this solution comprises a cooling water inlet pipeline 401, a cooling water outlet pipeline 402, a first branch 404, a second branch 405 and a cooling tower 403, one end of the cooling water inlet pipeline 401 is connected to the thermostatic component 100, the other end of the cooling water inlet pipeline 401 is connected to the cooling water inlet of the tested hot and cold water unit 600, one end of the cooling water outlet pipeline 402 is connected to the thermostatic component 100, the other end of the cooling water outlet pipeline 402 is connected to the cooling water outlet of the tested hot and cold water unit 600. Cooling water outlet, the cooling tower 403 is connected to the cooling water outlet pipeline 402, one end of the first branch 404 is connected to the cooling water inlet pipeline 401, the other end of the first branch 404 is connected to the cooling water outlet pipeline 402 between the cooling tower 403 and the constant temperature component 100, one end of the second branch 405 is connected to the cooling water inlet pipeline 401, and the other end of the second branch 405 is connected to the cooling water outlet pipeline 402 between the cooling tower 403 and the cooling water outlet.

[0058] Illustratively, when the cooling water system 400 is working, the water in the constant temperature water tank 101 flows in from one end of the cooling water inlet pipe 401, flows into the cooling water inlet of the tested hot and cold water unit 600 from the other end of the cooling water inlet pipe 401, and then flows into one end of the cooling water outlet pipe 402 from the cooling water outlet of the tested hot and cold water unit 600, and after being cooled by the cooling tower 403, flows into the constant temperature water tank 101 from the other end of the cooling water outlet pipe 402.

[0059] It should be noted that the above descriptions are all based on the fact that the tested hot and cold water unit 600 is in a cooling state. When the tested hot and cold water unit 600 is in a heating state, the first branch 404 and the second branch 405 are connected, the cooling water inlet pipe 401 and the cooling water outlet pipe 402 are closed, and the chilled water inlet and outlet water temperatures of the tested hot and cold water unit 600 become 40 / 45°C. Part of the excess heat of the constant temperature water tank 101 is borne by the chilled water unit 102 in the constant temperature component 100, and the other part is borne by the first branch 404 and the conduction of the first branch 404, so that the hot water in the constant temperature water tank 101 flows to the cooling tower 403 through the first branch 404 for heat dissipation, and then returns to the constant temperature water tank 101.

[0060] The present application is provided with an air handling unit 200, a cooling water system 400 and a chilled water system 300. The air handling unit 200 can provide a stable working condition for the tested hot and cold water unit 600. When the tested hot and cold water unit 600 is an air-cooled type or an evaporatively cooled type, the tested hot and cold water unit 600 can be connected to the thermostatic component 100 through the chilled water system 300, and then cooperated with the air handling unit 200 to realize the test of the tested hot and cold water unit 600; when the tested hot and cold water unit 600 is water-cooled, the tested hot and cold water unit 600 can be connected to the thermostatic component 100 through the chilled water system 300 and the cooling water system 400 to realize the test of the tested hot and cold water unit 600.

[0061] Furthermore, the cooling water inlet pipeline 401 has a second pump body 4011, a third pump body 4014, and a fourth stop valve 4012 and a second three-way regulating valve 4013 arranged between the second pump body 4011 and the third pump body 4014, the fourth stop valve 4012 is arranged between the second pump body 4011 and the second three-way regulating valve 4013, and the second three-way regulating valve 4013 is connected to the cooling water outlet pipeline 402 through a pipeline; the cooling water outlet pipeline 402 has a third stop valve 4022 and an eighth stop valve 4021, and the third stop valve 4022 and the eighth stop valve 4021 are both arranged between the cooling tower 403 and the cooling water outlet.

[0062] Exemplarily, when the tested hot and cold water unit 600 is in the heating state, the fourth stop valve 4012 and the third stop valve 4022 are both in the closed state, and the second pump body 4011 is in the working state; when the cooling water system 400 and the chilled water system 300 are mixed, the third stop valve 4022, the fourth stop valve 4012, the fifth stop valve 3021 and the eighth stop valve 4021 are in the closed state.

[0063] By cooperating with the third stop valve 4022 and the eighth stop valve 4021 , the cooling water system 400 and the chilled water system 300 can be connected, thereby reducing the cooling and heating power of the thermostatic component 100 .

[0064] For example Figure 1 As shown, the first branch 404 and the second branch 405 are both connected between the second pump body 4011 and the fourth stop valve 4012, the first branch 404 has a first stop valve 4041, the second branch 405 has a second stop valve 4051, and one end of the second branch 405 is connected between the third stop valve 4022 and the cooling tower 403.

[0065] Exemplarily, one end of the second branch 405 is connected between the first branch 404 and the fourth stop valve 4012. When the tested hot and cold water unit 600 is in the heating state, the first stop valve 4041 and the second stop valve 4051 are both in the open state.

[0066] In the present embodiment, the integrated hot and cold water unit test system also includes a mixing pipeline, which includes a first mixing branch 500 and a second mixing branch 502, one end of the first mixing branch 500 is connected between the fifth stop valve 3021 and the chilled water outlet, the other end of the first mixing branch 500 is connected between the eighth stop valve 4021 and the pipeline, one end of the second mixing branch 502 is connected between the eighth stop valve 4021 and the cooling water outlet, and the other end of the second mixing branch 502 is connected to the chilled water outlet pipeline 302 between the fifth stop valve 3021 and the pipeline; the first mixing branch 500 has a sixth stop valve 501, and the second mixing branch 502 has a seventh stop valve 503 and a fourth pump body 504.

[0067] Exemplarily, the mixing pipeline is used to connect the chilled water system 300 with the cooling water system 400, that is, when the chilled water system 300 is connected with the cooling water system 400, the fifth stop valve 3021, the eighth stop valve 4021, the third stop valve 4022 and the fourth stop valve 4012 are all in a closed state, the sixth stop valve 501 and the seventh stop valve 503 are in an open state, and the first pump body 3012, the third pump body 4014 and the fourth pump body 504 are in a working state, and the second pump body 4011 is in a partially working state.

[0068] It can be understood that the outlet of the chilled water (the outlet temperature of the chilled water is such as 7°C) passes through the sixth stop valve 501 and enters the cooling water outlet (the outlet temperature of the cooling water is such as 37°C) through the action of the second three-way regulating valve 4013 and the third pump body 4014. The mixed cooling water passes through the seventh stop valve 503 and the fourth pump body 504 and enters the chilled water outlet pipeline 302. A part of the cooling water is mixed with the water in the chilled water inlet pipeline 301 through the first three-way regulating valve 3011 and enters the tested hot and cold water unit 600. The other part of the cooling water enters the constant temperature water tank 101, and the cycle is repeated.

[0069] By designing the first mixing branch 500 and the second mixing branch 502, the cooling water system 400 and the chilled water system 300 can be connected, thereby reducing the power of the constant temperature component 100 and the heat output, and reducing the investment cost to a certain extent.

[0070] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For technical users in the field, the present application may have various modifications and changes. 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 comprehensive cold and hot water unit test system, the comprehensive cold and hot water unit test system having a closed test room, the test room is equipped with a cold and hot water unit to be tested, characterized in that: include: Thermostatic components; An air handling unit is arranged in the test room to process the air state of the tested cold and hot water unit, and the surface cooler of the air handling unit is connected to the constant temperature component through a circulation pipeline; A chilled water system, comprising a chilled water inlet pipe and a chilled water outlet pipe, wherein one end of the chilled water inlet pipe is connected to the thermostatic assembly, and the other end of the chilled water inlet pipe is connected to the chilled water inlet of the tested hot and cold water unit, one end of the chilled water outlet pipe is connected to the thermostatic assembly, and the other end of the chilled water outlet pipe is connected to the chilled water outlet of the tested hot and cold water unit; A cooling water system, comprising a cooling water inlet pipeline, a cooling water outlet pipeline, a first branch, a second branch and a cooling tower, wherein one end of the cooling water inlet pipeline is connected to the thermostatic component, and the other end of the cooling water inlet pipeline is connected to the cooling water inlet of the tested hot and cold water unit, one end of the cooling water outlet pipeline is connected to the thermostatic component, and the other end of the cooling water outlet pipeline is connected to the cooling water outlet of the tested hot and cold water unit, the cooling tower is connected to the cooling water outlet pipeline, one end of the first branch is connected to the cooling water inlet pipeline, and the other end of the first branch is connected to the cooling water outlet pipeline between the cooling tower and the thermostatic component, one end of the second branch is connected to the cooling water inlet pipeline, and the other end of the second branch is connected to the cooling water outlet pipeline between the cooling tower and the cooling water outlet; Among them, when the hot and cold water unit under test is of air-cooled type or evaporative cooling type, the hot and cold water unit under test can be connected to the constant temperature component through the chilled water system, and then cooperated with the air handling unit to test the hot and cold water unit under test; when the hot and cold water unit under test is water-cooled, the hot and cold water unit under test can be connected to the constant temperature component through the chilled water system and the cooling water system to test the hot and cold water unit under test.

2. The comprehensive cold and hot water unit testing system according to claim 1, characterized in that: The air handling unit includes a cooler, a refrigeration system, a heater, a humidifier and a blower which are arranged in sequence. The side of the air handling unit close to the cooler is configured as an air inlet, and the side of the air handling unit close to the blower is configured as an air outlet.

3. The comprehensive hot and cold water unit testing system according to claim 1, characterized in that: The circulation pipeline includes a first circulation branch, a second circulation branch and a plate converter. The plate converter is connected to both the first circulation branch and the second circulation branch. A variable frequency water pump is arranged on the first circulation branch.

4. The comprehensive cold and hot water unit testing system according to claim 1, characterized in that: The chilled water inlet pipeline has a first pump body and a first three-way regulating valve. The first three-way regulating valve is connected to the chilled water outlet pipeline through a pipeline. The first pump body is arranged between the first three-way regulating valve and the chilled water inlet. The chilled water outlet pipeline has a fifth stop valve.

5. The comprehensive cold and hot water unit testing system according to claim 4, characterized in that: The cooling water inlet pipeline has a second pump body, a third pump body, a fourth stop valve and a second three-way regulating valve arranged between the second pump body and the third pump body. The fourth stop valve is arranged between the second pump body and the second three-way regulating valve, and the second three-way regulating valve is connected to the cooling water outlet pipeline through a pipeline.

6. The comprehensive cold and hot water unit testing system according to claim 5, characterized in that: The cooling water outlet pipeline has a third stop valve and an eighth stop valve, and the third stop valve and the eighth stop valve are both arranged between the cooling tower and the cooling water outlet.

7. The comprehensive cold and hot water unit testing system according to claim 6, characterized in that: The first branch and the second branch are both connected between the second pump body and the fourth stop valve, the first branch has a first stop valve, the second branch has a second stop valve, and one end of the second branch is connected between the third stop valve and the cooling tower.

8. The comprehensive cold and hot water unit testing system according to claim 6, characterized in that: The comprehensive hot and cold water unit testing system also includes a mixing pipeline, which includes a first mixing branch and a second mixing branch, one end of the first mixing branch is connected between the fifth stop valve and the chilled water outlet, the other end of the first mixing branch is connected between the eighth stop valve and the pipeline, one end of the second mixing branch is connected between the eighth stop valve and the cooling water outlet, and the other end of the second mixing branch is connected to the chilled water outlet pipeline between the fifth stop valve and the pipeline.

9. The comprehensive cold and hot water unit testing system according to claim 8, characterized in that: The first mixing branch has a sixth shut-off valve, and the second mixing branch has a seventh shut-off valve and a fourth pump body.

10. The comprehensive cold and hot water unit testing system according to claim 1, characterized in that: The constant temperature component includes a constant temperature water tank, a heating element connected to the constant temperature water tank, and a chiller connected to the constant temperature water tank. The chiller is connected to the constant temperature water tank and is provided with a fifth pump body.

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