Liquid cooling system with wide temperature range, adjustable flow pressure and convenient liquid discharge

Abstract

The invention discloses a liquid cooling system with wide temperature range, adjustable flow pressure and convenient liquid drainage, which comprises a liquid storage tank, a water pump, a plate heat exchanger and a heat exchanger, an outlet of the liquid storage tank is connected with an inlet of the water pump through a stop valve I, and an outlet of the water pump is connected with an inlet of a fine filter through a stop valve II; a pipeline between the second stop valve and the fine filter is provided with a bypass A and a bypass B, the bypass A is connected with the liquid storage tank through a fourth stop valve and a second ball valve, and the bypass B is connected with the interior of the liquid storage tank through a third ball valve; an outlet of the fine filter is connected with a load inlet through an electromagnetic valve I and a ball valve I; a load outlet is connected with an inlet of a stop valve III; an outlet header pipe of the third stop valve is connected with a branch C and a branch D, the branch C is connected with the interior of the liquid storage tank through a second electromagnetic valve and a plate heat exchanger, and the branch D is connected with the interior of the liquid storage tank through a third electromagnetic valve and a heat exchanger. The device can meet the requirements for wide-temperature adjustment and temperature control precision, and has the advantage of convenience in liquid drainage.

Description

Technical Field

[0001] The invention relates to the field of liquid cooling systems, in particular to a liquid cooling system with wide temperature range, adjustable flow rate and pressure and convenient liquid discharge. Background Art

[0002] The liquid cooling system supporting special industries is required to work normally at ambient temperature (-45℃-55℃), and the load is adjustable to the liquid supply temperature of the refrigeration device with an accuracy of ±0.3℃. At the same time, the load is changing. The liquid cooling system supporting special industries requires that the liquid supply pressure and flow rate can adapt to the changes in the load at any time. The existing technology is to add a bypass valve to the load and adjust the liquid supply valve, which has the problem of complex adjustment methods. In addition, the liquid cooling system configured for special industries in the existing technology also has the problem of residual liquid after drainage. Summary of the invention

[0003] The present invention provides a liquid cooling system with wide temperature range, adjustable flow rate and pressure and convenient liquid discharge, so as to solve the problems of complicated pressure and flow rate regulation and inconvenient liquid discharge in the prior art special industry liquid cooling system.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A liquid cooling system with a wide temperature range, adjustable flow rate and pressure, and convenient liquid discharge, comprising a liquid storage tank (1), a water pump (4), a plate heat exchanger (12), and a heat exchanger (14) equipped with a fan (16), wherein the plate heat exchanger (12) has two sets of flow channels; wherein the outlet of the liquid storage tank (1) is connected to the inlet of a first stop valve (2) through a pipeline, the outlet of the first stop valve (2) is connected to the inlet of a primary filter (3) through a pipeline, the outlet of the primary filter (3) is connected to the inlet of a water pump (4) through a pipeline, the outlet of the water pump (4) is connected to the inlet of a second stop valve (5) through a pipeline, and the outlet of the second stop valve (5) is connected to the inlet of a fine filter (6) through a pipeline; The pipeline between the stop valve 2 (5) and the fine filter (6) has two bypasses, A and B, wherein the bypass A is connected to the inlet of a stop valve 4 (17), the outlet of the stop valve 4 (17) is connected to the inlet of a ball valve 2 (19) through a pipeline, and the outlet of the ball valve 2 (19) is connected to the inside of the liquid storage tank (1) through a pipeline; the bypass B is connected to the inlet of a ball valve 3 (20), and the outlet of the ball valve 3 (20) is connected to the inside of the liquid storage tank (1) through a pipeline; The outlet of the fine filter (6) is connected to the inlet of a solenoid valve (7) through a pipeline, the outlet of the solenoid valve (7) is connected to the inlet of a ball valve (8) through a pipeline, the outlet of the ball valve (8) is connected to the inlet of a load (9) through a pipeline, and the outlet of the load (9) is connected to the inlet of a stop valve (10) through a pipeline; The outlet main pipe of the stop valve three (10) is connected to two branch lines C and D, wherein the C branch line is connected to the inlet of the first group of flow channels of the plate heat exchanger (12) through the solenoid valve two (11), the outlet of the first group of flow channels of the plate heat exchanger (12) is connected to the inside of the liquid storage tank (1) through a pipeline, and the second group of flow channels of the plate heat exchanger (12) is used for refrigerant output from an external refrigerant source to pass through; the D branch line is connected to the inlet of the heat exchanger (14) through the solenoid valve three (13), the outlet of the heat exchanger (14) is connected to the inside of the liquid storage tank (1) through a pipeline, and the heat exchanger (14) is connected in parallel with an electromagnetic bypass regulating valve (15).

[0005] Furthermore, a pipeline is connected between the outlet of the fourth stop valve (17) and the inlet of the second ball valve (19) to a deionization device (18).

[0006] Furthermore, an electric heating device (27) is installed in the liquid storage tank (1).

[0007] Furthermore, it also includes an air pump (22) and a solenoid valve four (21). A drain valve (23) is installed at the bottom of the liquid storage tank (1) for draining liquid. The outlet of the air pump (22) is connected to the inlet of the solenoid valve four (21) through a pipeline. The outlet of the solenoid valve four (21) is connected to the pipeline between the outlet of the solenoid valve one (7) and the inlet of the ball valve one (8) through a pipeline bypass. The air pump (22) assists the liquid storage tank (1) in draining liquid.

[0008] Furthermore, a pressure sensor 1 (24) is installed in the pipeline between the ball valve 1 (8) and the load (9).

[0009] Furthermore, a flow sensor (25) is installed on the outlet main pipe of the stop valve three (10).

[0010] Furthermore, the liquid storage tank (1) is equipped with a photoelectric liquid level sensor (28), a temperature sensor (29), and a second pressure sensor (30).

[0011] Compared with the prior art, the present invention has the following advantages: 1) It can achieve wide temperature regulation and temperature control accuracy requirements.

[0012] 2) It can realize the regulation of liquid supply flow pressure and liquid supply flow.

[0013] 3) It has the advantage of convenient drainage.

[0014] 4) It can realize the preheating of the coolant of the heat exchange system.

[0015] 5) Simple structure, easy to use, easy to maintain and replace, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural principle diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, this embodiment discloses a liquid cooling system with wide temperature, adjustable flow rate and pressure and convenient liquid discharge, including a liquid storage tank 1, a stop valve 1 2, a primary filter 3, a water pump 4, a stop valve 2 5, a fine filter 6, a solenoid valve 1 7, a ball valve 1 8, a load 9, a stop valve 3 10, a solenoid valve 2 11, a plate heat exchanger 12 with two sets of flow channels, a solenoid valve 3 13, a heat exchanger 14 equipped with a fan 16, an electromagnetic bypass regulating valve 15, a condensing fan 16, a stop valve 4 17, a deionization device 19, a ball valve 2 19, a ball valve 3 20, a solenoid valve 4 21, an air pump 22, a liquid discharge valve 23, a pressure sensor 1 24, a flow sensor 25, an automatic exhaust valve 26, an electric heating device 27, a photoelectric liquid level sensor 28, a temperature sensor 29, and a pressure sensor 2 30. Among them, the solenoid valve 1 7 and the solenoid valve 2 11 are normally open solenoid valves, and the solenoid valve 3 13 and the solenoid valve 4 21 are normally open solenoid valves.

[0019] There is coolant in the liquid storage tank 1, the outlet of the liquid storage tank 1 is connected to the inlet of the stop valve 2 through a pipeline, the outlet of the stop valve 2 is connected to the inlet of the primary filter 3 through a pipeline, the outlet of the primary filter 3 is connected to the inlet of the water pump 4 through a pipeline, the outlet of the water pump 4 is connected to the inlet of the stop valve 2 5 through a pipeline, the outlet of the stop valve 2 5 is connected to the inlet of the fine filter 6 through a pipeline, the outlet of the fine filter 6 is connected to the inlet of the solenoid valve 7 through a pipeline, the outlet of the solenoid valve 7 is connected to the inlet of the ball valve 8 through a pipeline, the outlet of the ball valve 8 is connected to the inlet of the load 9 through a pipeline, and the outlet of the load 9 is connected to the inlet of the stop valve 3 10 through a pipeline. The outlet main pipe of the stop valve three 10 is connected to two branches C and D, among which the C branch is connected to the inlet of the first group of flow channels of the plate heat exchanger 12 through the solenoid valve two 11, the outlet of the first group of flow channels of the plate heat exchanger 12 is connected to the liquid storage tank 1 through a pipeline, and the second group of flow channels of the plate heat exchanger 12 is for the refrigerant output from the external refrigerant source to pass through; the D branch is connected to the inlet of the heat exchanger 14 through the solenoid valve three 13, the outlet of the heat exchanger 14 is connected to the liquid storage tank 1 through a pipeline, and the electromagnetic bypass regulating valve 15 is connected to the heat exchanger 14 in parallel.

[0020] The pipeline between the stop valve 2 5 and the fine filter 6 has two bypasses A and B, wherein the bypass A is connected to the inlet of the stop valve 4 17, the outlet of the stop valve 4 17 is connected to the inlet of the deionization device 18 through a pipeline, the outlet of the deionization device 18 is connected to the inlet of the ball valve 2 19 through a pipeline, and the outlet of the ball valve 2 19 is connected to the inside of the liquid storage tank 1 through a pipeline; the bypass B is connected to the inlet of the ball valve 3 20, and the outlet of the ball valve 3 20 is connected to the inside of the liquid storage tank 1 through a pipeline.

[0021] In this embodiment, the photoelectric liquid level sensor 28, the temperature sensor 29, and the pressure sensor 30 are installed on the liquid storage tank 1, respectively used to detect the liquid level, temperature, and pressure of the liquid storage tank 1. The electric heating device 27 is installed in the liquid storage tank 1, and is used to heat the coolant in the liquid storage tank 1. The automatic exhaust valve 26 is installed on the top of the liquid storage tank 1 for exhausting. The drain valve 23 is installed at the bottom of the liquid storage tank 1 for draining.

[0022] In this embodiment, the outlet of the air pump 22 is connected to the inlet of the solenoid valve four 21 through a pipeline, and the outlet of the solenoid valve four 21 is connected to the pipeline between the outlet of the solenoid valve one 7 and the inlet of the ball valve one 8 through a pipeline bypass, and the air pump 22 assists the liquid storage tank 1 in draining liquid.

[0023] In this embodiment, the pressure sensor 24 is installed in the pipeline between the outlet of the ball valve 8 and the inlet of the load 9 to detect the pressure of the coolant entering the load 9. The flow sensor 25 is installed in the outlet manifold of the stop valve 3 10 to detect the flow of the coolant flowing out of the outlet of the stop valve 3 10.

[0024] The working process of the liquid cooling system in this embodiment is described as follows: When the ambient temperature is 10℃~55℃, the flow direction of the coolant is: liquid storage tank 1→stop valve 1 2→primary filter 3→water pump 4→stop valve 2 5→fine filter 6→solenoid valve 1 7→ball valve 1 8→load 9→stop valve 3 10→solenoid valve 2 11→plate heat exchanger 12→liquid storage tank 1. The coolant flowing out of the load 9 exchanges heat with the refrigerant passing through the second set of flow channels of the plate heat exchanger 11 through the first set of flow channels of the plate heat exchanger 11, enters the liquid storage tank 1, is filtered through the primary filter 3, is pressurized by the water pump 4, enters the fine filter 6, and is sent to the load to complete the cycle.

[0025] When the ambient temperature is (-40℃~10℃), the flow direction of the coolant is: liquid storage tank 1→stop valve 1 2→primary filter 3→water pump 4→stop valve 2 5→fine filter 6→solenoid valve 1 7→ball valve 1 8→load 9→stop valve 3 10→solenoid valve 3 13→heat exchanger 14→liquid storage tank 1. The coolant from load 9 enters liquid storage tank 1 through heat exchanger 14, is filtered by primary filter 3, is pressurized by water pump 4, enters fine filter 6, and is sent to load to complete the cycle. The condensing fan 16 of heat exchanger 14 forces the ambient air to take away the heat of the coolant. The heat exchanger 14 is bypassed with an electromagnetic bypass regulating valve 15 to facilitate the bypass of the coolant to control the supply temperature and accuracy at low temperatures.

[0026] When the liquid cooling system is working, in addition to completing the above-mentioned liquid cooling system workflow, when the liquid supply flow and pressure need to be adjusted, since the load liquid supply flow and pressure change as needed, this requires that the liquid supply flow and pressure of the liquid cooling system can be adjusted at any time. The pipeline between the stop valve 25 and the fine filter 6 is divided into two paths A and B and the ball valve 18 is used for control. The ball valve 18, the ball valve 219, and the ball valve 320 are used as the regulating devices for the cooling liquid bypass volume to achieve the liquid supply flow (flow sensor 25 flow feedback display) and liquid supply pressure (pressure sensor 124 pressure feedback display) regulation. In addition, when adjusting, first open the stop valve 417 to adjust the bypass volume of the ball valve 219. If the set pressure and flow are not reached at this time, then adjust the bypass volume of the ball valve 320 and the ball valve 18 in turn until the flow and pressure requirements are met. In this way, the cooling liquid can also circulate through the deionization device 18 to ensure the water quality requirements of the liquid supply of the liquid cooling system.

[0027] The liquid cooling system generally uses a manual drain valve to drain the liquid, and the liquid remaining in the pipeline cannot be completely drained. This embodiment adopts a C-way between the outlet of the solenoid valve 7 and the inlet of the ball valve 8. The C-way is connected to the solenoid valve 21 and the air pump 22 in sequence through the pipeline. When draining, the drain valve 23 is opened, the solenoid valve 21 and the air pump 22 are turned on, and the solenoid valve 7 is closed. The liquid is discharged through the outlet pipeline of the connected drain valve 23. This method can conveniently and effectively discharge the coolant.

[0028] In this embodiment, a photoelectric liquid level sensor 28 is used to realize a low liquid level alarm in the solution tank, a pressure sensor 30 is used to sense the pressure and realize liquid level display through control, and a temperature sensor 29 is used to sense the temperature and realize temperature display through control.

[0029] In this embodiment, the electric heating device 27 is placed in the liquid storage tank 1 to achieve preheating of the heat exchange system.

[0030] In this embodiment, a stop valve 2 is installed at the front end of the primary filter 3, and a stop valve 2 5 is installed at the outlet end of the water pump 4 to facilitate the maintenance and replacement of the primary filter 3 and the water pump 4; a stop valve 4 17 and a ball valve 2 19 are installed at both ends of the deionization device 18 to facilitate the maintenance and replacement of the core of the ionization device 18; a stop valve 2 5 and a solenoid valve 7 are installed at both ends of the fine filter 6 to facilitate the maintenance and replacement of the filter element.

[0031] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The embodiments described in the present invention are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction, and such combinations should also be regarded as the contents disclosed in the present disclosure as long as they do not violate the concept of the present invention. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0032] The present invention is not limited to the specific details of the above-mentioned embodiments. Within the technical concept of the present invention and without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by technical personnel in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A liquid cooling system with wide temperature, adjustable flow rate and pressure and convenient drainage, characterized by: The invention comprises a liquid storage tank (1), a water pump (4), a plate heat exchanger (12), and a heat exchanger (14) equipped with a fan (16), wherein the plate heat exchanger (12) has two sets of flow channels; wherein the outlet of the liquid storage tank (1) is connected to the inlet of a first stop valve (2) through a pipeline, the outlet of the first stop valve (2) is connected to the inlet of a primary filter (3) through a pipeline, the outlet of the primary filter (3) is connected to the inlet of the water pump (4) through a pipeline, the outlet of the water pump (4) is connected to the inlet of a second stop valve (5) through a pipeline, and the outlet of the second stop valve (5) is connected to the inlet of a fine filter (6) through a pipeline; The pipeline between the stop valve 2 (5) and the fine filter (6) has two bypasses, A and B, wherein the bypass A is connected to the inlet of a stop valve 4 (17), the outlet of the stop valve 4 (17) is connected to the inlet of a ball valve 2 (19) through a pipeline, and the outlet of the ball valve 2 (19) is connected to the inside of the liquid storage tank (1) through a pipeline; the bypass B is connected to the inlet of a ball valve 3 (20), and the outlet of the ball valve 3 (20) is connected to the inside of the liquid storage tank (1) through a pipeline; The outlet of the fine filter (6) is connected to the inlet of a solenoid valve (7) through a pipeline, the outlet of the solenoid valve (7) is connected to the inlet of a ball valve (8) through a pipeline, the outlet of the ball valve (8) is connected to the inlet of a load (9) through a pipeline, and the outlet of the load (9) is connected to the inlet of a stop valve (10) through a pipeline; The outlet main pipe of the stop valve three (10) is connected to two branch lines C and D, wherein the C branch line is connected to the inlet of the first group of flow channels of the plate heat exchanger (12) through the solenoid valve two (11), the outlet of the first group of flow channels of the plate heat exchanger (12) is connected to the inside of the liquid storage tank (1) through a pipeline, and the second group of flow channels of the plate heat exchanger (12) is used for refrigerant output from an external refrigerant source to pass through; the D branch line is connected to the inlet of the heat exchanger (14) through the solenoid valve three (13), the outlet of the heat exchanger (14) is connected to the inside of the liquid storage tank (1) through a pipeline, and the heat exchanger (14) is connected in parallel with an electromagnetic bypass regulating valve (15).

2. The liquid cooling system with wide temperature, adjustable flow rate and pressure and convenient liquid discharge according to claim 1 is characterized in that: The outlet of the fourth stop valve (17) and the inlet of the second ball valve (19) are connected by a pipeline to a deionization device (18).

3. The liquid cooling system with wide temperature, adjustable flow rate and pressure and convenient liquid discharge according to claim 1 is characterized in that: An electric heating device (27) is installed in the liquid storage tank (1).

4. The liquid cooling system with wide temperature range, adjustable flow rate and pressure and convenient liquid discharge according to claim 1 is characterized in that: It also includes an air pump (22) and a solenoid valve (21). A drain valve (23) is installed at the bottom of the liquid storage tank (1) for draining liquid. The outlet of the air pump (22) is connected to the inlet of the solenoid valve (21) through a pipeline. The outlet of the solenoid valve (21) is connected to the pipeline between the outlet of the solenoid valve (7) and the inlet of the ball valve (8) through a pipeline bypass. The air pump (22) assists the liquid storage tank (1) in draining liquid.

5. The liquid cooling system with wide temperature, adjustable flow rate and pressure and convenient liquid discharge according to claim 1 is characterized in that: A pressure sensor 1 (24) is installed in the pipeline between the ball valve 1 (8) and the load (9).

6. The liquid cooling system with wide temperature range, adjustable flow rate and pressure and convenient liquid discharge according to claim 1 is characterized in that: The outlet main pipe of the stop valve three (10) is installed with a flow sensor (25).

7. The liquid cooling system with wide temperature range, adjustable flow rate and pressure and convenient liquid discharge according to claim 1, characterized in that: The liquid storage tank (1) is equipped with a photoelectric liquid level sensor (28), a temperature sensor (29), and a second pressure sensor (30).

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