Refrigerant adding method and device for compressor of air-cooled chiller unit

Abstract

The invention relates to the technical field of compressor maintenance, in particular to an air-cooled chiller unit compressor refrigerant adding method and device. The adapter is selected; the compressor and the valve core are connected through the adapter; and a refrigerant adding device is connected through the valve core, and a refrigerant is added into the compressor. According to the air-cooled chiller unit compressor refrigerant adding method and device, the valve core is connected with the standby connector of the compressor through the adapter, then the refrigerant adding equipment adds the refrigerant into the compressor through the valve core, the refrigeration effect of the compressor is ensured, and the compressor can work normally.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor maintenance, and particularly to a method and device for adding refrigerant to a compressor of an air-cooled chiller unit. Background Art

[0002] The inlet and outlet stop valves of the screw compressor of the chiller unit are not equipped with valve cores, only plugged with plugs, and the size of the reserved position for installing the valve core does not match the special pressure detection gauge joint. When the refrigerant of the compressor is missing, the refrigeration capacity of the chiller unit decreases or even stops refrigerating. During the peak cooling period in summer, the power plant's distribution rooms and electronic rooms will cause equipment component failures due to overheating, resulting in unplanned shutdowns of the unit. It will also affect the vacuum of the condenser due to insufficient cooling water source for the vacuum pump, thereby affecting the efficiency and economy of the unit. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned existing method and device for adding refrigerant to a compressor of an air-cooled chiller unit, the present invention is proposed.

[0004] Therefore, one of the purposes of the present invention is to provide a method for adding refrigerant to a compressor of an air-cooled chiller unit, and the purpose is to: during the operation of the unit, supplement the refrigerant to ensure the refrigeration effect.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A method and device for adding refrigerant to a compressor of an air-cooled chiller unit, including,

[0006] By selecting a valve core with internal threads;

[0007] By selecting an adapter;

[0008] By connecting the compressor and the valve core through the adapter; and,

[0009] By connecting the refrigerant adding device through the valve core to add refrigerant into the compressor.

[0010] As a preferred scheme of the method and device for adding refrigerant to a compressor of an air-cooled chiller unit of the present invention, wherein: the valve core is removed from a damaged or spare compressor, and the valve core has a specific internal thread structure to ensure a tight connection with the internal thread of the adapter.

[0011] As a preferred scheme of the method and device for adding refrigerant to a compressor of an air-cooled chiller unit of the present invention, wherein: one end of the adapter is an internal thread for connecting to the compressor, the other end is an external thread for connecting to the valve core, and the adapter has a liquid passing channel inside.

[0012] As a preferred scheme of the method and device for adding refrigerant to a compressor of an air-cooled chiller unit of the present invention, wherein: the connection parts of the adapter with the compressor and the valve core are sealed;

[0013] Its threaded part is sealed by winding PTFE tape, or the connection part is sealed by squeezing the sealing ring.

[0014] As a preferred solution of the refrigerant addition method and device for the compressor of the air-cooled chiller of the present invention, wherein: after the refrigerant replenishment is completed, start the chiller and conduct a full-load operation test. Use a data acquisition system to monitor the operating parameters of the chiller in real time to ensure that after the refrigerant is replenished, the operating state and efficiency of the unit reach the best.

[0015] The beneficial effect of this method: Connect the valve core to the spare interface of the compressor through an adapter, and then the refrigerant addition device adds refrigerant into the compressor through the valve core to ensure the refrigeration effect of the compressor and enable it to work properly.

[0016] Another object of the present invention is to provide a refrigerant addition device for the compressor of an air-cooled chiller, and its purpose is to: replenish refrigerant during the operation of the unit to ensure the refrigeration effect.

[0017] To solve the above technical problems, the present invention provides the following technical solution: A refrigerant addition device for the compressor of an air-cooled chiller includes an adapter, which includes,

[0018] A first connection part and a second connection part, and a liquid passage arranged inside the first connection part and the second connection part;

[0019] The first connection part is connected to the compressor, and the second connection part is connected to the valve core.

[0020] As a preferred solution of the refrigerant addition device for the compressor of the air-cooled chiller of the present invention, wherein: the end of the first connection part is an internal thread, and the end of the second connection part is an external thread;

[0021] The first connection part and the second connection part are fixedly connected.

[0022] As a preferred solution of the refrigerant addition device for the compressor of the air-cooled chiller of the present invention, wherein: both ends of the first connection part are internal threads, and both ends of the second connection part are internal threads;

[0023] The first connection part and the second connection part are threadedly connected.

[0024] As a preferred solution of the refrigerant addition device for the compressor of the air-cooled chiller of the present invention, wherein: a sealing ring is sleeved at the end of the first connection part.

[0025] As a preferred solution of the refrigerant adding device for the compressor of the air-cooled chiller of the present invention, wherein: a rotating part is arranged between the first connecting part and the second connecting part;

[0026] Both ends of the rotating part are rotatably clamped with the first connecting part and the second connecting part respectively.

[0027] The beneficial effects of the present invention: The first connecting part and the second connecting part are respectively connected to the compressor and the valve core, connecting the valve core and the compressor. Then, the refrigerant adding device adds refrigerant into the compressor through the valve core to ensure the refrigeration effect of the compressor and enable it to work normally. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the overall structure of the refrigerant adding device for the compressor of the air-cooled chiller of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the first connecting part of the refrigerant adding device for the compressor of the air-cooled chiller of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the rotating part of the refrigerant adding device for the compressor of the air-cooled chiller of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the rotating part of the refrigerant adding device for the compressor of the air-cooled chiller of the present invention. Detailed Embodiments

[0033] To make the above objects, features and advantages of the present invention more obvious and understandable, the detailed embodiments of the present invention will be described in detail below with reference to the drawings of the specification.

[0034] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] Second, the "one embodiment" or "embodiment" referred to herein means a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0036] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0037] Embodiment 1, referring to Figure 1 , which is the first embodiment of the present invention, provides a method for adding refrigerant to the compressor of an air-cooled chiller. This method includes:

[0038] S1. Select a valve core with an internal thread;

[0039] Remove a valve core with a specific internal thread structure from a damaged or spare compressor. Carefully check the internal thread of the valve core to ensure that its size and structure match the adapter M used in the subsequent steps.

[0040] Ensure that the internal thread of the valve core can be tightly connected to the internal thread of the adapter M to prevent refrigerant leakage.

[0041] S2. Select the adapter M;

[0042] Select a suitable adapter M according to the size of the position reserved for installing the valve core on the compressor and the size of the valve core. The adapter M should have a threaded structure at both ends, with an internal thread at one end for connecting to the compressor and an external thread at the other end for connecting to the valve core, and have a liquid passage N inside to ensure the smooth flow of refrigerant.

[0043] S3. Connect the compressor and the valve core through the adapter M; and,

[0044] First, connect the internal thread end of the adapter M to the position reserved for installing the valve core on the compressor, and use a torque wrench to tighten it to ensure a tight connection. Then connect the external thread end of the valve core to the external thread end of the adapter M, and also use a torque wrench to tighten it. During the connection process, PTFE tape can be wound around the thread or a sealing ring 101 can be used to ensure the tightness of the connection part; ensure that the connection between the adapter M and the compressor and the valve core is tight, without leakage, and the refrigerant can smoothly enter the compressor through the connection point.

[0045] Among them, wrap the joint tape around the connection threads of the adapter M with the compressor and the valve core, ensuring that the thickness of the joint tape is appropriate and evenly covers the thread surface. Use a torque wrench to tighten it according to the specified torque; through the elastic sealing performance of the joint tape, prevent refrigerant leakage.

[0046] Or install a sealing ring 101 at the connection part of the adapter M with the compressor and the valve core, ensuring that the size and material of the sealing ring 101 meet the requirements. By tightening the threads, make the sealing ring 101 deform appropriately at the connection part to ensure the sealing effect; through the deformation of the sealing ring 101, ensure the sealing performance of the connection part and prevent refrigerant leakage.

[0047] S4. Connect the refrigerant adding device through the valve core and add refrigerant into the compressor.

[0048] Among them, connect the connecting pipe of the refrigerant adding device with the valve core to ensure a tight connection. Start the refrigerant adding device, monitor the pressure and flow rate of the refrigerant, and supplement an appropriate amount of refrigerant into the compressor. During the supplement process, use a pressure gauge and a temperature sensor to monitor the refrigerant supplement situation in real time to ensure that the supplement amount is appropriate and avoid overfilling or underfilling; ensure that the refrigerant can enter the compressor through the valve core and the adapter M to complete the refrigerant supplement and ensure the normal operation of the water chiller.

[0049] Further, after the refrigerant supplement is completed, start the water chiller and conduct a full-load operation test. Use a data acquisition system to monitor the operation parameters of the water chiller in real time to ensure that after the refrigerant is supplemented, the operation status and efficiency of the unit reach the best.

[0050] Example 2, referring to Figure 1 and Figure 2 , this is the second embodiment of the present invention, which provides a refrigerant adding device for the compressor of an air-cooled water chiller. This device includes an adapter M, which includes a first connection part 100 and a second connection part 200, and a liquid passing channel N arranged inside the first connection part 100 and the second connection part 200.

[0051] The first connection part 100 is connected to the compressor, and the second connection part 200 is connected to the valve core.

[0052] Among them, the end of the first connection part 100 is an internal thread, and the end of the second connection part 200 is an external thread.

[0053] The first connection part 100 and the second connection part 200 are fixedly connected, integrally formed and fixed between the first connection part 100 and the second connection part 200, or fixed by welding.

[0054] During use, the internal thread of the first connecting part 100 is connected to the reserved part of the compressor, and the external thread of the second connecting part 200 is threadedly connected to the internal thread of the valve core. The liquid passing channel N of the first connecting part 100 and the second connecting part 200 connects the valve core and the compressor. Start the refrigerant adding device, monitor the pressure and flow rate of the refrigerant, and supplement an appropriate amount of refrigerant into the compressor. During the supplement process, use a pressure gauge and a temperature sensor to monitor the refrigerant supplement situation in real time to ensure that the supplement amount is appropriate and avoid overage or shortage; ensure that the refrigerant can enter the compressor through the valve core and the adapter M to complete the refrigerant supplement and ensure the normal operation of the water chiller.

[0055] Alternatively, both ends of the first connecting part 100 are internal threads, and both ends of the second connecting part 200 are external threads. One end of the first connecting part 100 is connected to the compressor, and one end of the second connecting part 200 is connected to the valve core. At the same time, the first connecting part 100 and the second connecting part 200 are connected by threads. The second connecting part 200 is sleeved outside the first connecting part 100 and is connected and fixed by threads, so that the liquid passing channel N of the first connecting part 100 and the second connecting part 200 connects the valve core and the compressor, and the refrigerant adding device can be started to add refrigerant.

[0056] Furthermore, a sealing ring 101 is sleeved on the end of the first connecting part 100. When threadedly connected to the first connecting part 100, its internal thread will enter the internal part of the external thread of the connecting device, and the external device can contact the sealing ring 101, thereby completing extrusion sealing, so that the connecting part will not leak and ensure that there is no leakage during the refrigerant supplement process;

[0057] Specifically, a sealing ring 101 is provided between the first connecting part 100 and the compressor. When the first connecting part 100 and the second connecting part 200 are threadedly connected, there is a sealing ring 101 between them, and a sealing ring 101 is also provided at the internal thread of the valve core. When the valve core is connected to the second connecting part 200, it is sealed by extruding the sealing ring 101.

[0058] The using process is as follows: Connect the compressor and the valve core through the first connecting part 100 and the second connecting part 200, and then start the refrigerant adding device, monitor the pressure and flow rate of the refrigerant, and supplement an appropriate amount of refrigerant from the valve core into the compressor to complete the refrigerant supplement and ensure the normal operation of the water chiller.

[0059] Example 3, referring to Figure 3 and Figure 4 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that a rotating part 300 is provided between the first connecting part 100 and the second connecting part 200;

[0060] Both ends of the rotating part 300 are rotatably clamped to the first connecting part 100 and the second connecting part 200 respectively. The rotating part 300 can rotate relative to the first connecting part 100 and the second connecting part 200. When the first connecting part 100 rotates, it will not drive the rotating part 300 and the second connecting part 200 to rotate. At the same time, when the second connecting part 200 rotates, it will not drive the rotating part 300 and the first connecting part 100 to rotate. And a liquid passing channel N is also provided inside the rotating part 300. The first connecting part 100, the second connecting part 200 and the rotating part 300 are provided with the liquid passing channel N. When the first connecting part 100 and the second connecting part 200 are respectively connected to the compressor and the valve core, the refrigerant can enter the compressor through the liquid passing channel N.

[0061] The rotating part 300 includes a mounting ring 301 in the middle and fixing rings 302 at both ends. A protruding limiting ring 303 is provided on the fixing ring 302, and a rubber layer is provided on the outside of the limiting ring 303.

[0062] The first connecting part 100 and the second connecting part 200 are provided with annular slots for the fixing ring 302 and the limiting ring 303 to be inserted, and the rubber layer on the outside of the limiting ring 303 is rotationally sealed with the contact parts of the first connecting part 100 and the second connecting part 200.

[0063] When installing the first connecting part 100 and the second connecting part 200, they can rotate independently and will not affect each other. That is, during installation, the first connecting part 100 and the second connecting part 200 can be installed and disassembled at will without affecting the refrigerant transportation pipeline connected to the valve core.

[0064] The remaining structure is the same as that of Embodiment 2.

[0065] The using process is as follows: Connect the compressor and the valve core through the first connecting part 100 and the second connecting part 200. Then, start the refrigerant adding device, monitor the pressure and flow rate of the refrigerant, and supplement an appropriate amount of refrigerant from the valve core into the compressor to complete the refrigerant supplement and ensure the normal operation of the chiller.

[0066] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be altered or re-ordered according to alternative embodiments. In the claims, any clause of "means plus function" is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Accordingly, the present invention is not limited to a particular embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0067] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently considered best mode of carrying out the present invention, or those features that are not relevant to the implementation of the present invention).

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A method for adding refrigerant to the compressor of an air-cooled chiller, characterized in that: Including, By selecting a valve core with internal threads; By selecting an adapter (M); Connecting the compressor to the valve core through the adapter (M); and, Connecting a refrigerant adding device through the valve core to add refrigerant into the compressor.

2. The refrigerant addition method for the compressor of the air-cooled chiller according to claim 1, wherein: The valve core is removed from a damaged or spare compressor. The valve core has a specific internal thread structure that can ensure a tight connection with the internal threads of the adapter (M).

3. The refrigerant addition method for the compressor of the air-cooled chiller according to claim 2, characterized in that: One end of the adapter (M) has internal threads for connecting to the compressor, and the other end has external threads for connecting to the valve core. And there is a liquid passage (N) inside the adapter (M).

4. The refrigerant addition method for the compressor of the air-cooled chiller according to claim 3, characterized in that: The connection parts of the adapter (M) with the compressor and the valve core are sealed; Its threaded part is sealed by winding PTFE tape, or the connection part is sealed by squeezing a sealing ring (101).

5. The refrigerant addition method for the compressor of an air-cooled chiller according to any one of claims 1-4, characterized in that: After the refrigerant replenishment is completed, start the chiller and conduct a full-load operation test. Use a data acquisition system to monitor the operating parameters of the chiller in real time to ensure that after the refrigerant is replenished, the operating state and efficiency of the unit reach the best.

6. An air-cooled chiller compressor refrigerant adding device, characterized in that: Including the adapter (M) described in any one of claims 1-5, which includes, A first connection part (100) and a second connection part (200), and a liquid passage (N) provided inside the first connection part (100) and the second connection part (200); The first connection part (100) is connected to the compressor, and the second connection part (200) is connected to the valve core.

7. The refrigerant adding device for the compressor of the air-cooled chiller according to claim 6, characterized in that: The end of the first connection part (100) is internal threads, and the end of the second connection part (200) is external threads; The first connection part (100) and the second connection part (200) are fixedly connected.

8. The refrigerant adding device for the compressor of the air-cooled chiller according to claim 7, characterized in that: Both ends of the first connection part (100) are internal threads, and both ends of the second connection part (200) are internal threads; The first connection part (100) and the second connection part (200) are threadedly connected.

9. The refrigerant adding device for the compressor of the air-cooled chiller according to claim 8, characterized in that: A sealing ring (101) is sleeved on the end of the first connection part (100).

10. The refrigerant adding device for the compressor of the air-cooled chiller according to claim 6, characterized in that: A rotating part (300) is provided between the first connection part (100) and the second connection part (200); Both ends of the rotating part (300) are rotationally clamped to the first connection part (100) and the second connection part (200) respectively.

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