Liquid injection and recovery tool for water chilling unit

Abstract

The utility model provides a liquid injection and recovery tool for a water chilling unit, which comprises a support frame, the support frame comprises a first installation space and a second installation space, a liquid storage unit is arranged in the first installation space, and a liquid injection pipeline is arranged in the second installation space; a first liquid suction end of the liquid injection pipeline is a free end and is selectively connected with a circulating pipeline of the liquid supply unit or the water chilling unit, and a second liquid suction end of the liquid injection pipeline is connected with the liquid storage unit; the liquid outlet end of the liquid injection pipeline is selectively connected with a circulating pipeline or a recycling unit of the water chilling unit, and the recycling unit is used for recycling a heat exchange working medium of the water chilling unit. The liquid storage unit is arranged, heat exchange working media in the water chilling unit can be supplemented at any time, when the first liquid suction end is communicated with the circulating pipeline of the water chilling unit, the liquid storage unit can be used for recycling redundant heat exchange working media in the water chilling unit, and waste of the heat exchange working media is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chillers, and in particular relates to a liquid injection and recovery tool for chillers. Background Art

[0002] In a chiller that uses water or other refrigerants as the heat exchange medium, after the unit has been running for a period of time, the circulating heat exchange medium may sometimes decrease due to evaporation or leakage in the circulation pipeline, thereby reducing the cooling capacity of the system and failing to meet the heat dissipation requirements of the energy storage system. Therefore, the heat exchange medium in the chiller needs to be replenished in time through the injection system.

[0003] The existing liquid injection system needs to use a barrel pump to extract the barreled heat exchange medium into an external container, and then use a liquid pump to pressurize the heat exchange medium in the external container and inject it into the circulation pipeline of the chiller. The liquid replenishment process is relatively cumbersome, and due to the large volume and mass of the barreled heat exchange medium, it is inconvenient to carry, and the flexibility of liquid replenishment is limited. On the other hand, the existing technology cannot recycle the excess heat exchange medium in the chiller. In addition to causing waste, heat exchange mediums such as ethylene glycol will also cause environmental pollution.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a liquid injection and recovery tooling for a chiller, which can not only replenish the heat exchange medium in the chiller at any time through a liquid storage unit, but also recycle the heat exchange medium in the chiller to avoid waste.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A liquid injection and recovery tool for a chiller, comprising a support frame, the support frame comprising a first installation space and a second installation space, a liquid storage unit is arranged in the first installation space, and a liquid injection pipeline is arranged in the second installation space;

[0008] The first liquid suction end of the liquid injection pipeline is a free end, which is selectively connected to the liquid supply unit or the circulation pipeline of the chiller, and the second liquid suction end of the liquid injection pipeline is connected to the liquid storage unit;

[0009] The liquid outlet end of the liquid injection pipeline is selectively connected to the circulation pipeline of the chiller or the recovery unit, and the recovery unit is used to recover the heat exchange medium of the chiller.

[0010] Furthermore, a plurality of first cross beams are arranged in the middle of the support frame, the first cross beams are arranged between two vertical frames of the support frame, and a second cross beam is arranged between two parallel first cross beams;

[0011] The first crossbeam and the second crossbeam form a first supporting layer for setting up a liquid storage unit. The first supporting layer divides the inner space of the support frame into a first installation space and a second installation space distributed up and down. The liquid storage unit is set at a corner of the first installation space.

[0012] Furthermore, an auxiliary support member is provided at the connection between the first crossbeam and the second crossbeam. The auxiliary support member is a triangular prism structure, any side wall of which is fixed on the first crossbeam, and an adjacent side wall is fixed on the second crossbeam.

[0013] Furthermore, a liquid level meter is arranged at any side wall of the liquid storage unit arranged adjacent to the vertical frame of the support frame, and the liquid level meter is arranged parallel to the vertical frame.

[0014] Furthermore, the injection pipeline includes a filter, an injection pump and a pressure regulating injection valve arranged in series;

[0015] The pressure regulating injection valve is arranged between the liquid outlet end of the injection pipeline and the injection pump, and the filter is arranged on the other side of the injection pump.

[0016] Furthermore, a third crossbeam is provided at the bottom of the support frame, and the third crossbeam is provided between two cross frames provided in parallel with the support frame to form a second support layer for providing the injection pump;

[0017] The injection pump and the liquid storage unit are arranged adjacent to or spaced apart in a horizontal direction.

[0018] Furthermore, the injection pipeline is also provided with an exhaust valve, one end of which is connected to the injection pump, and the other end of which extends upward into the first installation space and is connected to the liquid outlet end of the injection pipeline via the pressure regulating injection valve;

[0019] A first fixing member is disposed at any side wall of the first installation space, and the first fixing member is provided with a first positioning hole for fixing the liquid outlet end of the liquid injection pipeline.

[0020] Furthermore, a second fixing member is provided at any side wall of the second installation space, and the second fixing member is provided with a second positioning hole for fixing the first liquid suction end of the liquid injection pipeline.

[0021] Furthermore, a storage unit is arranged on the top of the first installation space, the storage unit is arranged adjacent to the liquid storage unit, and the opening of the storage unit faces upward.

[0022] Furthermore, a plurality of universal wheels for displacement are arranged at the bottom of the support frame.

[0023] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0024] 1. The utility model is provided with a liquid storage unit, which can replenish the heat exchange working fluid in the chiller at any time, reducing the steps of carrying barreled heat exchange working fluid, improving the flexibility of liquid injection, and when the first liquid suction end is connected with the circulation pipeline of the chiller, the liquid injection and recovery tool for the chiller of the utility model can also be used to recover excess heat exchange working fluid in the chiller, which can avoid the waste of heat exchange working fluid and the pollution of the environment by heat exchange working fluids such as ethylene glycol.

[0025] 2. In the utility model, the injection pump and the liquid storage unit are arranged adjacently or at intervals in the horizontal direction, which can ensure the stability of the liquid injection and recovery tooling for the chiller of the utility model and avoid the occurrence of instability and rollover.

[0026] 3. The bottom of the support frame of the utility model is also provided with universal wheels for displacement, so that the working path of the liquid injection and recovery tooling for the chiller of the utility model can be extended, and the coverage area is increased accordingly.

[0027] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0029] Figure 1 It is a side view of the liquid injection and recovery tooling for the chiller of the utility model;

[0030] Figure 2 It is a side view of another angle of the liquid injection and recovery tooling for the chiller of the utility model;

[0031] Figure 3 It is a rear view of the liquid injection and recovery tooling for the chiller of the utility model.

[0032] Description of the main components in the figure: 1. Support frame; 101. Horizontal frame; 102. Vertical frame; 2. First installation space; 3. Second installation space; 4. Liquid storage unit; 401. Liquid level meter; 5. Liquid injection pipeline; 501. First liquid suction end; 502. Liquid outlet end; 503. Filter; 504. Liquid injection pump; 505. Exhaust valve; 506. Pressure regulating liquid injection valve; 6. First crossbeam; 7. Second crossbeam; 8. Third crossbeam; 9. Universal wheel; 10. Storage unit; 11. Handle; 12. Auxiliary support member; 13. First fixing member; 14. Second fixing member.

[0033] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] When the chiller of the energy storage system in the prior art needs to be supplemented with heat exchange medium, due to the large volume and mass of the barreled heat exchange medium, a forklift or other means of transportation is required to first move the barrel of heat exchange medium to the vicinity of the chiller before the liquid injection process can be carried out. The liquid injection process includes two steps: extracting the barreled heat exchange medium into an external container and pressurizing the heat exchange medium in the external container to supplement the chiller. On the other hand, the existing liquid injection system is also unable to recycle the heat exchange medium in the chiller. In addition to wasting the heat exchange medium, heat exchange mediums such as ethylene glycol will also pollute the environment.

[0038] In view of this, if Figure 1-3 As shown, the utility model provides a liquid injection and recovery tooling for a chiller, comprising a support frame 1, the support frame 1 comprising a first installation space 2 and a second installation space 3, wherein a liquid storage unit 4 is arranged in the first installation space 2, and a liquid injection pipeline 5 is arranged in the second installation space 3.

[0039] In the utility model, the first liquid suction end 501 of the liquid injection pipeline 5 is a free end, which is selectively connected to a liquid supply unit such as a heat exchange medium barrel or a circulation pipeline of a chiller. The second liquid suction end of the liquid injection pipeline 5 is connected to a liquid storage unit 4. The liquid storage unit 4 can temporarily provide heat exchange medium when the liquid supply unit is far away from the chiller or the heat exchange medium required by the chiller is less, thereby ensuring the flexibility of the liquid injection and recovery tooling for the chiller of the utility model.

[0040] The liquid outlet end 502 of the liquid injection pipeline 5 is connected to the circulation pipeline of the chiller or to the recovery unit, and the recovery unit is used to recover the heat exchange medium of the chiller.

[0041] When the first liquid suction end 501 is connected to a liquid supply unit such as a heat exchange medium barrel, the second liquid suction end is in a closed state, and the liquid outlet end 502 of the injection pipeline 5 is correspondingly connected to the circulation pipeline of the chiller. The heat exchange medium in the liquid supply unit enters the chiller through the first liquid suction end 501 and the liquid outlet end 502 of the injection pipeline 5 in turn.

[0042] When the first liquid suction end 501 is closed and the second liquid suction end is opened, the liquid outlet end 502 of the injection pipeline 5 is connected to the circulation pipeline of the chiller. At this time, the heat exchange medium in the chiller is replenished through the liquid storage unit 4.

[0043] When the first liquid suction end 501 is connected to the circulation pipeline of the chiller, the second liquid suction end is in a closed state. At this time, the liquid outlet end 502 of the injection pipeline 5 is connected to the recovery unit, and the heat exchange medium in the chiller is recovered into the recovery unit through the first liquid suction end 501 and the liquid outlet end 502 of the injection pipeline 5.

[0044] Furthermore, the recovery unit can be directly configured as the liquid storage unit 4 , so that the heat exchange medium in the liquid storage unit 4 can be replenished while the heat exchange medium in the chiller is recovered and utilized.

[0045] Furthermore, in the present invention, a plurality of universal wheels 9 for displacement are also provided at the bottom of the support frame 1, so that the working path of the present invention can be extended and the coverage area is increased accordingly.

[0046] Preferably, a plurality of handles 11 may be provided on the top of the support frame 1 to facilitate the operation of the liquid injection and recovery tool for the chiller of the utility model.

[0047] In one embodiment of the present invention, the support frame 1 includes a plurality of horizontal frames 101 and a plurality of vertical frames 102, wherein the plurality of horizontal frames 101 are interconnected to form two independent closed figures, and the plurality of vertical frames 102 are used to connect two independent closed figures distributed up and down.

[0048] A plurality of first cross beams 6 are arranged in the middle of the support frame 1 . The first cross beam 6 is arranged between two vertical frames 102 of the support frame 1 . A second cross beam 7 is arranged between two parallel first cross beams 6 .

[0049] The first cross beam 6 and the second cross beam 7 form a first support layer for setting the liquid storage unit 4. The first support layer divides the internal space of the support frame 1 into a first installation space 2 and a second installation space 3 distributed up and down. The liquid storage unit 4 can be set on the first cross beam 6 and the second cross beam 7 through an L-shaped fixing piece.

[0050] Preferably, in order to facilitate the staff to open the liquid storage unit 4 and also to prevent the heat exchange medium in the liquid storage unit 4 from accidentally spilling out, the input end of the liquid storage unit 4 in this embodiment is arranged at the top thereof.

[0051] Furthermore, in order to increase the utilization of space, the liquid storage unit 4 in this embodiment is arranged at a corner of the first installation space 2 .

[0052] Correspondingly, the space between the horizontal frame 101 at the top of the support frame 1 spaced apart from the liquid storage unit 4 and the liquid storage unit 4 can be used to set up a storage unit 10. The storage unit 10 can be used to store connecting pipes and other commonly used equipment for staff. To facilitate the staff to access relevant tools, the opening of the storage unit 10 faces upward.

[0053] Furthermore, in addition to the storage unit 10 , the space between the horizontal frame 101 on the other side of the top of the support frame 1 spaced apart from the liquid storage unit 4 and the liquid storage unit 4 is covered by the support member, and the support member extends to the horizontal frame 101 adjacent to the horizontal frame 101 .

[0054] At this time, the support member can connect the two parallel horizontal frames 101, which on the one hand increases the structural stability of the support frame 1, and on the other hand, the storage unit 10 can also be set at the top of the first installation space 2 through the support member and the horizontal frame 101 parallel thereto. As the height of the storage unit 10 increases, it is also more convenient for the staff to take tools.

[0055] Specifically, the two side walls of the storage unit 10 are inverted L-shaped structures, and the storage unit 10 can be hung on the top of the first installation space 2 by setting the upper wall of the inverted L-shaped side wall on the support member and the horizontal frame 101 parallel thereto.

[0056] In order to further increase the stability of the support frame 1 , in addition to the support member provided on the top thereof, an auxiliary support member 12 may also be provided at the connection between the first cross beam 6 and the second cross beam 7 .

[0057] The auxiliary support member 12 is preferably a triangular prism structure, with any side wall thereof being fixed to the first crossbeam 6 , and the adjacent side wall being fixed to the second crossbeam 7 .

[0058] When the first crossbeam 6 and the second crossbeam 7 are arranged perpendicular to each other, the auxiliary support member 12 is correspondingly arranged as a right-angled triangular prism structure, and the side wall where any right-angle side is located is arranged on the first crossbeam 6, and the side wall where the other right-angle side is located is arranged on the second crossbeam 7.

[0059] Furthermore, in addition to the connection between the first crossbeam 6 and the second crossbeam 7, the connection between the first crossbeam 6 and the vertical frame 102 of the support frame 1, and the connection between the vertical frame 102 of the support frame 1 and the cross frame 101 can also be provided with auxiliary support members 12 to further increase the stability of the support frame 1.

[0060] In another embodiment of the utility model, when the liquid storage unit 4 is arranged at the corner of the first installation space 2, a liquid level meter 401 is also provided at any side wall of the liquid storage unit 4 adjacent to the vertical frame 102 of the support frame 1, so that the staff can monitor the height of the heat exchange medium in the liquid storage unit 4 in real time, thereby realizing quantitative control of the injection amount during the injection process. When the recovery unit is set as the liquid storage unit 4, overflow of the heat exchange medium in the liquid storage unit 4 can also be avoided.

[0061] Specifically, in this embodiment, the bottom of the liquid level gauge 401 is connected to the bottom of the liquid storage unit 4, so that the height of the heat exchange medium in the liquid storage unit 4 and the liquid level gauge 401 remains consistent.

[0062] On the other hand, in order to prevent the heat exchange medium in the liquid level gauge 401 from spilling out or the heat exchange medium from being contaminated by external dust during the movement of the liquid injection and recovery tooling for the chiller, the top of the liquid level gauge 401 in this embodiment is also connected to the liquid storage unit 4.

[0063] The liquid injection pipeline 5 in the utility model includes a filter 503, a liquid injection pump 504 and a pressure-regulating liquid injection valve 506 arranged in series, wherein the liquid injection pump 504 is used to absorb the heat exchange medium and pump it into the chiller or the recovery unit, and the pressure-regulating liquid injection valve 506 is used to adjust the pressure of the heat exchange medium to the actual pressure required by the chiller.

[0064] In order to prevent other components from affecting the pressure of the heat exchange medium in the injection pipeline 5, the pressure-regulating injection valve 506 in the utility model is arranged between the liquid outlet end 502 of the injection pipeline 5 and the injection pump 504, and the filter 503 is arranged on the other side of the injection pump 504. When the heat exchange medium is sucked into the injection pipeline 5 through the first suction end 501 or the second suction end under the action of the injection pump 504, the impurities therein are first filtered by the filter 503 to prevent these impurities from damaging the injection pump 504.

[0065] Furthermore, considering that the filter 503 needs to be cleaned frequently, in order to avoid the waste caused by the outflow of residual heat exchange medium in the injection pipeline 5 during the cleaning process of the filter 503, in the utility model, a first switch valve is arranged between the pressure regulating injection pump 504 and the filter 503 to control the on-off of the main line of the injection pipeline 5, and a second switch valve and a third switch valve are respectively arranged at the first branch where the first suction end 501 is located and the second branch where the second suction end is located, so as to control the on-off of the first branch and the second branch respectively.

[0066] When the filter 503 needs to be removed from the injection pipeline 5, the first switch valve, the second switch valve and the third switch valve are all closed. At this time, the main line, the first branch and the second branch of the injection pipeline 5 are all disconnected, and the heat exchange medium accumulated therein will not flow out too much, avoiding waste. At the same time, it can also prevent heat exchange mediums such as ethylene glycol from polluting the environment.

[0067] When the first liquid suction end 501 is connected to a liquid supply unit such as a heat exchange medium barrel, the third switch valve is in a closed state, and the second branch where the second liquid suction end is located is disconnected to prevent the heat exchange medium in the liquid storage unit 4 from flowing out. The liquid outlet end 502 of the injection pipeline 5 is connected to the circulation pipeline of the chiller. At this time, under the action of the injection pump 504, the heat exchange medium in the liquid supply unit such as the heat exchange medium barrel is replenished into the chiller.

[0068] When the second switch valve is closed, in order to prevent the heat exchange medium from overflowing from the first suction end 501, the first branch where the first suction end 501 is located is disconnected. At this time, the first switch valve and the third switch valve are opened, that is, the main line and the second main line of the injection pipeline 5 remain in a conductive state, and the heat exchange medium in the liquid storage unit 4 is pumped into the chiller under the action of the injection pump 504.

[0069] When the first liquid suction end 501 is connected to the chiller and the liquid outlet end 502 of the injection pipeline 5 is connected to the recovery unit, the first switch valve and the second switch valve are in the open state, and the third switch valve is in the closed state, that is, the main line and the first branch of the injection pipeline 5 are connected, and the second branch is closed. At this time, the heat exchange medium of the chiller is recovered to the recovery unit under the action of the injection pump 504.

[0070] If the recovery unit is directly set as the liquid storage unit 4 of the tooling, the heat exchange working fluid in the liquid storage unit 4 can be replenished while recycling the heat exchange working fluid in the chiller. At this time, the height of the heat exchange working fluid in the liquid storage unit 4 can be monitored in real time by the liquid level meter 401. When the height of the heat exchange working fluid is high, the recovery speed of the heat exchange working fluid can be reduced by controlling the power of the injection pump 504 to avoid overflow of the heat exchange working fluid in the liquid storage unit 4.

[0071] Furthermore, in the utility model, a pressure gauge is also provided between the pressure-regulating injection valve 506 and the liquid outlet 502 of the injection pipeline 5 to detect whether the pressure of the heat exchange medium in the injection pipeline 5 reaches the pressure required by the chiller to avoid damaging the chiller.

[0072] On the other hand, when the pressure of the heat exchange medium does not reach the pressure required by the chiller, the staff can also promptly determine that there is a fault at the pressure regulating injection valve 506 and perform timely maintenance on it.

[0073] In one embodiment of the present invention, a third cross beam 8 is disposed at the bottom of the support frame 1 , and the third cross beam 8 is disposed between two parallel cross frames 101 of the support frame 1 to form a second support layer for arranging the injection pump 504 .

[0074] Furthermore, considering that both the liquid storage unit 4 and the injection pump 504 are heavy, if the two are arranged on the same side, the structural stability of the liquid injection and recovery tooling for the chiller may be poor, or even there is a risk of tipping over. Therefore, in this embodiment, the injection pump 504 and the liquid storage unit 4 are arranged adjacent to or spaced apart in the horizontal direction, that is, the two are balanced with each other in the horizontal direction to ensure the stability of the liquid injection and recovery tooling for the chiller in this embodiment.

[0075] Furthermore, in this embodiment, an exhaust valve 505 is also provided on the injection pipeline 5, one end of the exhaust valve 505 is connected to the injection pump 504, and the other end extends upward into the first installation space 2, and is connected to the liquid outlet end 502 of the injection pipeline 5 through the pressure regulating injection valve 506.

[0076] Correspondingly, a first fixing member 13 is provided at any side wall of the first installation space 2 , and the first fixing member 13 is provided with a first positioning hole for fixing the liquid outlet end 502 of the liquid injection pipeline 5 .

[0077] Due to the provision of the exhaust valve 505, the height of the liquid outlet 502 of the liquid injection pipeline 5 is increased, making it easier for the staff to operate the liquid outlet 502. On the other hand, if the liquid outlet 502 needs to be connected to the liquid storage unit 4 of the tooling to recover the heat exchange medium, as the height of the liquid outlet 502 increases, the distance between it and the input end of the liquid storage unit 4 decreases accordingly, and the required pipeline between the liquid outlet 502 and the input end of the liquid storage unit 4 is shorter, which reduces the recovery cost of the heat exchange medium to a certain extent.

[0078] In addition to the first fixing member 13 , in this embodiment, a second fixing member 14 is further provided at any side wall of the second installation space 3 , and the second fixing member 14 is provided with a second positioning hole for fixing the first liquid suction end 501 of the liquid injection pipeline 5 .

[0079] The second positioning hole is preferably opened on the upper part of the second fixing member 14. On the one hand, it shortens the distance between the first liquid suction end 501 and the opening of the liquid supply unit such as the heat exchange medium barrel, reducing the cost of the pipeline used for connection. On the other hand, as the height of the second positioning hole increases, it is also more convenient for the staff to operate.

[0080] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A liquid injection and recovery tool for a chiller, characterized in that: The supporting frame includes a first installation space and a second installation space, wherein a liquid storage unit is arranged in the first installation space, and a liquid injection pipeline is arranged in the second installation space; The first liquid suction end of the liquid injection pipeline is a free end, which is selectively connected to the liquid supply unit or the circulation pipeline of the chiller, and the second liquid suction end of the liquid injection pipeline is connected to the liquid storage unit; The liquid outlet end of the liquid injection pipeline is selectively connected to the circulation pipeline of the chiller or the recovery unit, and the recovery unit is used to recover the heat exchange medium of the chiller.

2. A liquid injection and recovery tool for a chiller according to claim 1, characterized in that: A plurality of first cross beams are arranged in the middle of the support frame, wherein the first cross beams are arranged between two vertical frames of the support frame, and a second cross beam is arranged between two parallel first cross beams; The first crossbeam and the second crossbeam form a first supporting layer for setting up a liquid storage unit. The first supporting layer divides the inner space of the support frame into a first installation space and a second installation space distributed up and down. The liquid storage unit is set at a corner of the first installation space.

3. A liquid injection and recovery tool for a chiller according to claim 2, characterized in that: An auxiliary support member is provided at the connection between the first crossbeam and the second crossbeam. The auxiliary support member is a triangular prism structure, any side wall of which is fixed on the first crossbeam, and the adjacent side wall is fixed on the second crossbeam.

4. The liquid injection and recovery tool for a chiller according to claim 2, characterized in that: A liquid level meter is arranged at any side wall of the liquid storage unit arranged adjacent to the vertical frame of the support frame, and the liquid level meter is arranged parallel to the vertical frame.

5. The liquid injection and recovery tool for a chiller according to claim 2, characterized in that: The injection pipeline includes a filter, an injection pump and a pressure regulating injection valve arranged in series; The pressure regulating injection valve is arranged between the liquid outlet end of the injection pipeline and the injection pump, and the filter is arranged on the other side of the injection pump.

6. The liquid injection and recovery tool for a chiller according to claim 5, characterized in that: A third crossbeam is also provided at the bottom of the support frame, and the third crossbeam is provided between two cross frames provided in parallel with the support frame to form a second support layer for providing the injection pump; The injection pump and the liquid storage unit are arranged adjacent to or spaced apart in a horizontal direction.

7. The liquid injection and recovery tool for a chiller according to claim 6, characterized in that: The injection pipeline is also provided with an exhaust valve, one end of which is connected to the injection pump, and the other end of which extends upward into the first installation space and is connected to the liquid outlet end of the injection pipeline via the pressure regulating injection valve; A first fixing member is disposed at any side wall of the first installation space, and the first fixing member is provided with a first positioning hole for fixing the liquid outlet end of the liquid injection pipeline.

8. The liquid injection and recovery tool for a chiller according to claim 1, characterized in that: A second fixing member is disposed at any side wall of the second installation space, and the second fixing member is provided with a second positioning hole for fixing the first liquid suction end of the liquid injection pipeline.

9. The liquid injection and recovery tool for a chiller according to claim 2, characterized in that: A storage unit is arranged on the top of the first installation space. The storage unit is arranged adjacent to the liquid storage unit, and an opening of the storage unit faces upward.

10. A liquid injection and recovery tool for a chiller according to any one of claims 1 to 9, characterized in that: A plurality of universal wheels for displacement are arranged at the bottom of the support frame.

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