Liquid supplementing device of energy storage liquid cooling unit

Abstract

A liquid supplementing device of an energy storage liquid cooling unit relates to the technical field of refrigeration equipment, an outlet (101a) of a liquid supplementing box (101) is connected to an inlet of a water pump (103) through a second valve (102), an outlet of the water pump (103) is connected to a first liquid supplementing and discharging connector (106) sequentially through a one-way valve (104) and a first electromagnetic valve (105), and a pressure gauge (107) is installed in front of the first liquid supplementing and discharging connector (106); the second liquid supplementing and discharging connector (108) is connected to an inlet of the water pump (103) through a first valve (109); and the vacuum pump (201) is connected to the first liquid supplementing and discharging connector (106) through the water quality air filter (202) and the second electromagnetic valve (203) in sequence. According to the invention, primary liquid injection or liquid supplementation can be more conveniently carried out on the unit.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a liquid replenishing device for an energy storage liquid cooling unit. Background Art

[0002] With the development of the times, the shipment of energy storage batteries has grown rapidly. The shipment of energy storage batteries continued the strong growth momentum of the previous year. The shipment of energy storage batteries increased throughout the year, and the density of battery packs inside the energy storage cabinet gradually increased, resulting in an increase in the energy density inside the cabinet, and the demand for refrigeration units will also increase significantly. The existing liquid cooling unit refilling process requires continuous exhaust for refilling, and the equipment during the refilling process needs to be constantly replaced. The refilling process is relatively cumbersome and inefficient. Summary of the invention

[0003] The utility model aims to provide a liquid replenishing device for an energy storage liquid cooling unit, which can more conveniently perform initial liquid injection or liquid replenishment on the unit.

[0004] In order to achieve the above objectives, the technical solution adopted by the utility model is: a liquid replenishing device for an energy storage liquid cooling unit, including a liquid replenishing system and a vacuum system, wherein:

[0005] The specific structure of the fluid replenishment system is as follows: the outlet of the fluid replenishment tank is connected to the inlet of the water pump through the second valve, and the outlet of the water pump is connected to the first fluid replenishment and discharge joint through the one-way valve and the first solenoid valve in sequence, and a pressure gauge is installed in front of the first fluid replenishment and discharge joint; the pressure gauge also serves as a hydraulic gauge and a barometer to directly detect the pressure in the pipeline. When the pipeline is full of liquid, the liquid pressure is detected, and when the pipeline is in a vacuum state, the gas pressure is detected.

[0006] The second liquid replenishment and drainage joint is connected to the water pump inlet through the first valve;

[0007] The specific structure of the vacuum system is as follows: the vacuum pump is connected to the first liquid replenishment and drainage joint through a filter and a second electromagnetic valve in sequence.

[0008] The liquid replenishment system is used for the initial liquid replenishment of the liquid-cooled unit and for liquid replenishment during the operation of the liquid-cooled unit.

[0009] The vacuum system is used to evacuate the liquid-cooled unit before the first liquid filling. The filter can effectively prevent the residual liquid in the unit from damaging the vacuum pump during vacuuming.

[0010] Furthermore, the first valve and the second valve are ball valves.

[0011] Further, the recovery port of the liquid replenishment tank is connected to the first liquid replenishment and discharge joint through a pressure relief valve;

[0012] In this way, during the refilling process, when the pressure is too high, it can be automatically released through the pressure relief valve to prevent excessive pressure from damaging the equipment and causing coolant leakage.

[0013] Furthermore, a Y-type filter is installed at the inlet end of the water pump.

[0014] In this way, impurities in the liquid can be filtered out and the long-term normal use of the water pump can be protected.

[0015] Furthermore, a liquid level meter connected to the inner cavity of the liquid replenishment tank is also installed on the outer wall of the liquid replenishment tank.

[0016] In this way, it is convenient for the operator to visually observe the changes in the coolant level in the replenishing tank.

[0017] Furthermore, the number of the filters is two.

[0018] In this way, the residual liquid in the unit can be filtered more thoroughly when vacuuming, and the vacuum pump can be better protected.

[0019] Furthermore, the device also includes a control system, and the specific structure of the control system is: a low liquid level switch is installed in the lower part of the liquid replenishing tank, and the central control module is electrically connected to the low liquid level switch, the first solenoid valve, the second solenoid valve, the water pump, and the vacuum pump.

[0020] The central control module can be built with logic gate separation devices, relays, switches, etc. In addition to receiving the low liquid level switch signal for alarm processing, it also controls the power on and off of the first solenoid valve, the second solenoid valve, the water pump, and the vacuum pump, thereby realizing the opening or closing of the solenoid valve and the starting or stopping of the water pump and the vacuum pump.

[0021] The low liquid level switch cooperates with the central control module. When the coolant level in the refill tank is low, the low liquid level protection is triggered and an alarm is issued to remind you to add coolant to prevent air from entering the unit.

[0022] The central control module allows operators to conveniently and remotely operate the first solenoid valve, the second solenoid valve, the water pump, and the vacuum pump, thereby improving work efficiency.

[0023] Furthermore, the device also includes a recovery system, and the specific structure of the recovery system is: the recovery port of the liquid replenishment tank is connected to the first liquid replenishment and drainage connector through a third solenoid valve, and the third solenoid valve is electrically connected to the central control module.

[0024] In this way, when the liquid of the liquid cooling unit needs to be recovered, the liquid can be recovered into the liquid replenishing tank through the recovery system, which facilitates the disassembly of the liquid cooling unit.

[0025] The central control module controls the power on and off of the third solenoid valve to open or close the solenoid valve.

[0026] The beneficial effects of the utility model are:

[0027] A refilling device for an energy storage liquid cooling unit is provided, which can facilitate on-site refilling and improve on-site engineering efficiency; its main functions include vacuuming, refilling and cooling liquid recovery, which can be switched freely according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the pipeline system of an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of an electrical connection system of an embodiment of the utility model. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Figure 1-2 It is shown that a specific embodiment of the utility model is a liquid replenishing device for an energy storage liquid cooling unit, including a liquid replenishing system, a vacuum system, a control system, and a recovery system, wherein:

[0032] The specific structure of the liquid replenishment system is as follows: the outlet 101a of the liquid replenishment tank 101 is connected to the inlet of the water pump 103 through the second valve 102, and the outlet of the water pump 103 is connected to the first liquid replenishment and drainage joint 106 through the one-way valve 104 and the first solenoid valve 105 in sequence, and a pressure gauge 107 is installed in front of the first liquid replenishment and drainage joint 106;

[0033] The second liquid replenishment and drainage connector 108 is connected to the inlet of the water pump 103 through the first valve 109;

[0034] The recovery port 101b of the liquid replenishment tank 101 is connected to the first liquid replenishment and discharge joint 106 through the pressure relief valve 110;

[0035] The inlet end of the water pump 103 is also provided with a Y-type filter 111 , which is located after the first valve 109 and the second valve 102 .

[0036] A liquid level meter 112 connected to the inner cavity of the liquid replenishing tank 101 is also installed on the outer wall of the liquid replenishing tank 101 .

[0037] In this embodiment, the first valve 109 and the second valve 102 are ball valves.

[0038] The specific structure of the vacuum system is as follows: the vacuum pump 201 is connected to the first liquid replenishment and drainage connector 106 through the filter 202 and the second solenoid valve 203 in sequence. In this embodiment, there are two filters 202.

[0039] The specific structure of the recovery system is as follows: the recovery port 101 b of the liquid replenishment tank 101 is connected to the first liquid replenishment and drainage connector 106 through the third solenoid valve 401 .

[0040] The specific structure of the control system is as follows: a low liquid level switch 302 is installed at the lower part of the liquid replenishing tank 101, and the central control module 301 is electrically connected to the low liquid level switch 302, the first solenoid valve 105, the second solenoid valve 203, the third solenoid valve 401, the water pump 103, and the vacuum pump 201.

[0041] The method of using this device is:

[0042] 1. First time adding liquid

[0043] 1. Before the first liquid filling of the liquid cooling unit, the first liquid filling and draining joint 106 needs to be connected to the liquid cooling unit through a hose, and the unit is first vacuumized. The central control module 301 issues a corresponding instruction to control the vacuum pump 201 to start, open the second solenoid valve 203, and observe the pressure gauge 107 of the device. When the pressure reaches the predetermined vacuum pressure P1, the central control module 301 controls the vacuum pump 201 to stop, and closes the second solenoid valve 203;

[0044] 2. When the liquid cooling unit is first filled with liquid, the first valve 109 is manually opened, the second valve 102 is closed, and the quick connector of the liquid filling hose is connected to the second liquid filling and discharge connector 108, and the other end is placed in the liquid barrel to be added. The central control module 301 sends a corresponding instruction to control the water pump 103 to start, open the first solenoid valve 105, and add liquid to the unit;

[0045] 3. During the liquid adding process, the pressure gauge 107 of the device needs to be observed. When the predetermined liquid adding pressure P2 is reached, the water pump 103 is controlled to stop by the central control module 301, and the first solenoid valve 105 is closed to stop the liquid adding;

[0046] 4. During the liquid adding process, when the liquid adding pressure is greater than the predetermined safety pressure P3, the pressure relief valve 110 will automatically open to release the pressure. When the pressure after the pressure relief is lower than the safety pressure P3, the pressure relief valve 110 will automatically close.

[0047] 2. Fluid Replenishment

[0048] 1. When the unit is short of liquid and needs to be replenished, manually close the first valve 109, open the second valve 102, fill the replenishment tank 101 with coolant in advance, and connect the first replenishment and drainage joint 106 to the liquid cooling unit through the replenishment hose;

[0049] 2. The central control module 301 issues a corresponding instruction to control the water pump 103 to start, open the first solenoid valve 105, and replenish the unit with liquid;

[0050] The pressure gauge 107 of the observation device, when the predetermined liquid filling pressure P2 is reached, the central control module 301 controls the water pump 103 to stop, closes the first solenoid valve 105, and stops the liquid filling;

[0051] 3. When the liquid filling pressure is greater than the predetermined safety pressure P3, the pressure relief valve 110 will automatically open to relieve the pressure. When the pressure after the pressure relief is lower than the safety pressure P3, the pressure relief valve 110 will automatically close.

[0052] 3. Recover coolant

[0053] 1. When the coolant of the liquid cooling unit needs to be recovered, the first liquid replenishment and drainage connector 106 can be connected to the liquid cooling unit through a liquid replenishment hose;

[0054] 2. The central control module 301 issues a corresponding instruction to open the third solenoid valve 401, and the coolant of the liquid cooling unit is recovered into the liquid replenishing tank 101. When the coolant is recovered, the third solenoid valve 401 is closed by the central control module 301. During the implementation, the coolant recovery is achieved by relying on the pressure of the liquid in the pipeline or the slope of the pipeline.

[0055] It should be noted that in actual use, the device can flexibly choose to fill the coolant from the refilling tank 101 or directly from the coolant barrel according to the filling amount of the coolant without being limited to the method described above, that is, when the filling amount is greater than the volume of the refilling tank 101, the quick connector of the refilling hose is connected to the second refilling and draining connector 108, and the other end is placed in the liquid barrel to be added, the first valve 109 is manually opened, the second valve 102 is closed, and the central control module 301 issues a corresponding instruction to control the water pump 103 to start, open the first solenoid valve 105, and directly extract the coolant from the coolant barrel to add liquid to the unit. When the filling amount is less than the volume of the refilling tank 101, the refilling tank 101 can be used for refilling, that is, the first valve 109 is manually closed, the second valve 102 is opened, and the central control module 301 issues a corresponding instruction to control the water pump 103 to start, open the first solenoid valve 105, and extract the coolant from the refilling tank 101 to refill the unit.

Claims

1. A liquid replenishing device for an energy storage liquid cooling unit, characterized in that: It includes a fluid replenishment system and a vacuum system, including: The specific structure of the liquid replenishment system is as follows: the outlet (101a) of the liquid replenishment tank (101) is connected to the inlet of the water pump (103) through the second valve (102), and the outlet of the water pump (103) is connected to the first liquid replenishment and discharge joint (106) through the one-way valve (104) and the first solenoid valve (105) in sequence, and a pressure gauge (107) is installed in front of the first liquid replenishment and discharge joint (106); The second liquid replenishment and drainage connector (108) is connected to the inlet of the water pump (103) through the first valve (109); The specific structure of the vacuum system is as follows: the vacuum pump (201) is connected to the first liquid replenishment and drainage joint (106) through the filter (202) and the second solenoid valve (203) in sequence.

2. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: The first valve (109) and the second valve (102) are ball valves.

3. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: The recovery port (101b) of the liquid replenishment tank (101) is connected to the first liquid replenishment and discharge connector (106) via a pressure relief valve (110).

4. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: A Y-type filter (111) is also installed at the inlet end of the water pump (103).

5. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: A liquid level meter (112) which is in communication with the inner cavity of the liquid replenishing tank (101) is also installed on the outer wall of the liquid replenishing tank (101).

6. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: The number of the filters (202) is two.

7. The liquid replenishing device of the energy storage liquid cooling unit according to claim 1, characterized in that: The invention also includes a control system, wherein the specific structure of the control system is as follows: a low liquid level switch (302) is installed in the lower part of the liquid replenishing tank (101), and the central control module (301) is electrically connected to the low liquid level switch (302), the first solenoid valve (105), the second solenoid valve (203), the water pump (103), and the vacuum pump (201).

8. The liquid replenishing device of the energy storage liquid cooling unit according to claim 7, characterized in that: It also includes a recovery system, the specific structure of which is: the recovery port (101b) of the liquid replenishment tank (101) is connected to the first liquid replenishment and drainage connector (106) through a third solenoid valve (401), and the third solenoid valve (401) is electrically connected to the central control module (301).

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