V-shaped natural cooling air-cooled screw unit waterway system structure

Abstract

The utility model relates to the technical field of air conditioner accessories, in particular to a V-shaped natural cooling air-cooled screw unit waterway system structure which comprises an air-cooled screw unit and a natural cooling water system arranged below the air-cooled screw unit. The air-cooled screw unit is composed of a plurality of V-shaped condenser modules, and the V-shaped condenser modules are sequentially arranged side by side. A plurality of natural cooling coils are arranged on the outer side of each V-shaped condenser module, and a plurality of fluorine system coils are arranged on the inner side of each V-shaped condenser module; the natural cooling water system comprises a shell-and-tube heat exchanger, and a water inlet main pipe and a water return main pipe which are arranged above the shell-and-tube heat exchanger, and the water inlet main pipe and the water return main pipe are arranged in a same-stroke manner; a water inlet pipe, an electric three-way valve and a tee joint are arranged on the water inlet pipeline. The V-shaped condenser module has the advantages of being small and exquisite in structure, flexible to assemble, convenient to hoist and the like, natural cooling can be achieved through the natural cooling water system, and the cooling effect is good.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning accessories technology, and in particular to a water circuit system structure for a V-type natural cooling air-cooled screw compressor unit. Background Technology

[0002] Currently, most air-cooled screw chiller units manufactured by major air conditioning manufacturers feature an inverted M-shaped condenser structure, especially those with natural cooling coils, which almost exclusively use this design. Its main advantages are twofold: firstly, it benefits from the superior tooling technology and the excellent performance of large-scale hoisting equipment in China; secondly, the inverted M-shaped condenser has only four blades, simplifying piping connections, particularly for air-cooled screw chillers with natural cooling, significantly simplifying water system piping design. However, for some export-oriented companies, air conditioning units need to be loaded into containers, and large inverted M-shaped condenser air-cooled screw chillers often exceed the required height, hindering container loading and transportation.

[0003] Therefore, this application requires the design of a V-type natural cooling air-cooled screw turbine water system structure to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a V-type natural cooling air-cooled screw compressor water system structure. It adopts a V-type condenser module, which has the advantages of compact structure, flexible assembly, and convenient hoisting. Furthermore, the use of a natural cooling water system enables natural cooling with good cooling effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A V-type natural cooling air-cooled screw turbine water system structure includes an air-cooled screw turbine and a natural cooling water system located below the air-cooled screw turbine;

[0007] The air-cooled screw chiller unit consists of multiple V-type condenser modules, which are arranged side by side in sequence. Each V-type condenser module has multiple natural cooling coils on its outer side and multiple refrigerant system coils on its inner side.

[0008] The natural cooling water system includes a shell-and-tube heat exchanger, and an inlet main pipe and a return main pipe located above the shell-and-tube heat exchanger. The inlet main pipe and the return main pipe are arranged in the same direction. The shell-and-tube heat exchanger is provided with an inlet pipe, and the inlet pipe is provided with an inlet pipe, an electric three-way valve, and a tee. The inlet pipe, the electric three-way valve, and the tee are arranged sequentially on the inlet pipe of the shell-and-tube heat exchanger in the direction of water inflow.

[0009] The main inlet pipe is connected to the electric three-way valve on the inlet pipe via an inlet connecting pipe, and the main return pipe is connected to the three-way valve on the inlet pipe via a return connecting pipe.

[0010] The shell-and-tube heat exchanger is also provided with a water outlet pipe at one end.

[0011] By adopting the above technical solution, a V-type condenser module is used as the unit. The V-type condenser module is simple and flexible to assemble, with fewer restrictions. It does not require large hoisting equipment or specialized tooling techniques. Once the V-type condenser module is in place, only the inlet and outlet pipes need to be connected. There are no high-risk or heavy-duty operations, greatly improving the safety and flexibility of worker operations. Furthermore, the assembly of the V-type condenser module and the installation of the water system at the bottom of the unit do not interfere with each other, allowing for flexible progress control and significantly saving procedures and time.

[0012] Meanwhile, the inlet and return mains of the natural cooling water system are designed as a single unit with the shell-and-tube heat exchanger. These mains are placed side-by-side above the inlet and outlet pipes of the shell-and-tube heat exchanger, cleverly utilizing the gap between them to reduce the overall height. An electric three-way valve and a tee are designed on the inlet pipe of the shell-and-tube heat exchanger, solving the entire system layout of the natural cooling piping with the height of a single pipe diameter. All pipes in the water system are connected by flanges, improving the airtightness and strength of the water circuit. Furthermore, the entire water system is arranged in a parallel flow pattern, ensuring uniform water distribution.

[0013] Preferably, the main water inlet pipe is provided with multiple water inlet branch pipes, and the multiple water inlet branch pipes are configured one-to-one with the water inlets of multiple natural cooling coils; each water inlet branch pipe is connected to the water inlet of the natural cooling coil through a copper pipe and is equipped with a shock-absorbing pipe.

[0014] Preferably, the main return water pipe is provided with multiple return water branch pipes, and the multiple return water branch pipes are configured one-to-one with the outlets of multiple natural cooling coils. Each return water branch pipe is connected to the outlet of the natural cooling coil through a copper pipe and is equipped with a shock-absorbing pipe.

[0015] By adopting the above technical solution: the upper part of the main inlet and return water pipes is designed and welded with a number of inlet and return water branch pipes corresponding to the natural cooling coil, to correspond to the inlet and outlet of the natural cooling coil. The water inlet of the natural cooling coil is at the bottom. Among them, the use of vibration damping pipes is simple to connect and can effectively reduce the vibration of the water system during circulation.

[0016] Preferably, the bottom of the water inlet connecting pipe is provided with a first drain outlet.

[0017] Preferably, the bottom of the return water connection pipe is provided with a second drain outlet.

[0018] Preferably, each V-type condenser module has a third drain outlet at the manifold of its natural cooling coil.

[0019] By adopting the above technical solution: the first and second drain outlets used here prevent water accumulation in the unit's water circuit; in addition, a third drain outlet is also provided at the lowest point of the manifold of the natural cooling coil of each V-type condenser module to prevent water accumulation in the coil; thus avoiding the problem of water circuit freezing and cracking caused by water in the system under extreme cold conditions.

[0020] This utility model has the following beneficial effects:

[0021] 1. The V-shaped condenser module used in this utility model has the advantages of compact structure, flexible assembly, and convenient hoisting. Its installation is convenient and meets the packing height requirements, greatly improving the safety and flexibility of worker operation. Moreover, the assembly of the V-shaped condenser module and the installation of the water system at the bottom of the unit do not interfere with each other, and the progress control is flexible, greatly saving processes and time.

[0022] 2. The natural cooling water system of this utility model has a simple structure, convenient pipe connection, can achieve natural cooling, and has a good cooling effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0025] Figure 3 This is a schematic diagram of the natural cooling water system in this utility model.

[0026] In the diagram: 1. V-type condenser module, 2. Natural cooling coil, 2-1. Water inlet, 2-2. Water outlet, 3. Refrigerant system coil, 4. Shell and tube heat exchanger, 5. Main water inlet pipe, 6. Main water return pipe, 7. Water inlet pipe, 8. Water inlet pipe, 9. Electric three-way valve, 10. Three-way valve, 11. Water inlet connection pipe, 12. Water return connection pipe, 13. Water outlet pipe, 14. Water inlet branch pipe, 15. Water return branch pipe, 16. First drain outlet, 17. Second drain outlet, 18. Third drain outlet. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-3 A V-type natural cooling air-cooled screw turbine water system structure includes an air-cooled screw turbine and a natural cooling water system located below the air-cooled screw turbine.

[0029] The air-cooled screw chiller unit consists of multiple V-type condenser modules 1, which are arranged side by side in sequence. Each V-type condenser module 1 has multiple natural cooling coils 2 on its outer side and multiple refrigerant system coils 3 on its inner side.

[0030] The natural cooling water system includes a shell-and-tube heat exchanger 4, and an inlet main pipe 5 and a return main pipe 6 located above the shell-and-tube heat exchanger 4. The inlet main pipe 5 and the return main pipe 6 are arranged in the same direction. The shell-and-tube heat exchanger 4 is provided with an inlet pipe 7, and the inlet pipe 7 is provided with an inlet pipe 8, an electric three-way valve 9, and a three-way valve 10. The inlet pipe 8, the electric three-way valve 9, and the three-way valve 10 are arranged sequentially on the inlet pipe 7 of the shell-and-tube heat exchanger 4 in the direction of water inflow.

[0031] The main inlet pipe 5 is connected to the electric three-way valve 9 on the inlet pipe 7 via the inlet connecting pipe 11, and the main return pipe 6 is connected to the three-way valve 10 on the inlet pipe 7 via the return connecting pipe 12.

[0032] One end of the shell-and-tube heat exchanger 4 is also provided with a water outlet pipe 13.

[0033] In this embodiment, a V-type condenser module 1 is used as the unit. The V-type condenser module 1 is simple and flexible to assemble, with fewer restrictions. It does not require large hoisting equipment or specialized tooling techniques. Once the V-type condenser module is in place, only the inlet and outlet pipes need to be connected. There are no high-risk or heavy-duty operations, greatly improving the safety and flexibility of worker operations. Furthermore, the assembly of the V-type condenser module and the installation of the water system at the bottom of the unit do not interfere with each other, allowing for flexible progress control and significantly saving procedures and time.

[0034] Meanwhile, the inlet and return mains of the natural cooling water system are designed as a single unit with the shell-and-tube heat exchanger 4. The inlet and return mains 5 are arranged side-by-side above the inlet and outlet pipes of the shell-and-tube heat exchanger 4, cleverly utilizing the gap between the inlet and outlet pipes to reduce the overall height. An electric three-way valve 9 and a three-way valve 10 are designed on the inlet pipe 7 of the shell-and-tube heat exchanger 4, solving the entire system layout of the natural cooling pipeline with the height of a single water pipe diameter. All pipes in the water system are connected by flanges, improving the airtightness and strength of the water circuit. Furthermore, the entire water system is arranged in a parallel flow pattern, ensuring uniform water distribution.

[0035] In practical applications, the natural cooling water system can be assembled independently externally and then installed as a whole at the bottom of the air-cooled screw chiller unit, avoiding the difficulty of installation in the limited space inside the unit. Meanwhile, the natural cooling water system is characterized by its inlet connection pipe 11 and return connection pipe 12. The design of these two pipes fully considers the internal layout of the air-cooled screw chiller unit, cleverly utilizing the extra space inside the unit while naturally connecting the water system together. This results in a natural and rational structure for the water system, and the parallel pipe design optimizes the problem of uneven water resistance.

[0036] Reference Figure 1 , Figure 3 Specifically, the main water inlet pipe 5 is provided with multiple water inlet branch pipes 14, and the multiple water inlet branch pipes 14 are configured one-to-one with the water inlets 2-1 of the multiple natural cooling coils 2; each water inlet branch pipe 14 is connected to the water inlet 2-1 of the natural cooling coil 2 through a copper pipe and is equipped with a shock-absorbing pipe.

[0037] Reference Figure 1 , Figure 3 Specifically, the main return water pipe 6 is provided with multiple return water branch pipes 15, and the multiple return water branch pipes 15 are configured one-to-one with the outlets 2-2 of the multiple natural cooling coils 2. Each return water branch pipe 15 is connected to the outlet 2-2 of the natural cooling coil 2 through a copper pipe and is equipped with a shock-absorbing pipe.

[0038] In this embodiment, the upper part of the main inlet pipe 5 and the main return pipe 6 is designed with welded inlet branch pipes 14 and return branch pipes 15 corresponding to the number of natural cooling coils 2, to correspond to the inlet and outlet of the natural cooling coils. The water inlets of the natural cooling coils 2 are all at the bottom. The use of vibration damping pipes simplifies the connection and effectively reduces vibration during water circulation.

[0039] Reference Figure 1 Specifically, the bottom of the water inlet connection pipe 11 is provided with a first drain outlet 16.

[0040] Reference Figure 1 Specifically, the bottom of the return water connection pipe 12 is provided with a second drain outlet 17.

[0041] Reference Figure 1 Specifically, each V-type condenser module 1 has a third drain outlet 18 at the manifold of the natural cooling coil 2.

[0042] In this embodiment, the first drain outlet 16 and the second drain outlet 17 are used to prevent water accumulation in the unit's water circuit. In addition, a third drain outlet 18 is also provided at the lowest point of the manifold of the natural cooling coil 2 of each V-type condenser module to prevent water accumulation in the coil. This avoids the problem of water circuit freezing and cracking caused by water in the system under extreme cold conditions.

[0043] The working principle of the natural cooling water system in this invention is as follows:

[0044] When the air-cooled screw chiller starts the compressor cooling mode, the electric three-way valve 9 does not switch the natural cooling water circuit. High-temperature water enters from the inlet pipe 8 and flows directly through the inlet pipe 7 into the shell and tube heat exchanger 4 for cooling. Low-temperature water flows out from the outlet pipe 13 of the shell and tube heat exchanger 4.

[0045] When the air-cooled screw chiller starts in natural cooling mode, the high-temperature water to be cooled enters from the inlet pipe 8, and is switched to the inlet connecting pipe 11 by the electric three-way valve 8. From the inlet connecting pipe 11 to the main inlet pipe 5, the high-temperature water to be cooled enters each V-shaped natural cooling coil 2 from the inlet branch pipe 14 on the main inlet pipe 5. After being cooled by forced air convection by the fan, the high-temperature water becomes low-temperature water. The low-temperature water flows out from the natural cooling coil 2, passes through the return branch pipe 15 and collects into the return main pipe 6, and then enters the three-way 10 of the shell and tube heat exchanger 4 through the return connecting pipe 12. After passing through the shell and tube heat exchanger 4, the low-temperature water flows out from the outlet pipe 13 of the shell and tube heat exchanger 4.

[0046] In summary, the V-shaped condenser module adopted in this invention has advantages such as compact structure, flexible assembly, and convenient hoisting. Its installation is convenient while simultaneously meeting the packing height requirements, greatly improving the safety and flexibility of worker operation. Furthermore, the assembly of the V-shaped condenser module and the installation of the water system at the bottom of the unit do not interfere with each other, allowing for flexible progress control and significantly saving procedures and time.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A V-type naturally cooled air-cooled screw compressor unit water circuit system structure, characterized in that, This includes air-cooled screw chillers and a natural cooling water system located below the air-cooled screw chillers; The air-cooled screw chiller unit is composed of multiple V-type condenser modules (1), which are arranged side by side in sequence; each V-type condenser module (1) has multiple natural cooling coils (2) on its outer side and multiple refrigerant system coils (3) on its inner side. The natural cooling water system includes a shell-and-tube heat exchanger (4), and an inlet main pipe (5) and a return main pipe (6) located above the shell-and-tube heat exchanger (4). The inlet main pipe (5) and the return main pipe (6) are arranged in the same direction. The shell-and-tube heat exchanger (4) is provided with an inlet pipe (7). The inlet pipe (7) is provided with an inlet pipe (8), an electric three-way valve (9), and a tee (10). The inlet pipe (8), the electric three-way valve (9), and the tee (10) are arranged sequentially on the inlet pipe (7) of the shell-and-tube heat exchanger (4) in the direction of water inflow. The main inlet pipe (5) is connected to the electric three-way valve (9) on the inlet pipe (7) through the inlet connecting pipe (11), and the main return pipe (6) is connected to the three-way valve (10) on the inlet pipe (7) through the return connecting pipe (12); The shell-and-tube heat exchanger (4) is also provided with a water outlet pipe (13) at one end.

2. The water circuit system structure of a V-type natural cooling air-cooled screw turbine unit according to claim 1, characterized in that, The main water inlet pipe (5) is provided with multiple water inlet branch pipes (14), and the multiple water inlet branch pipes (14) are set one-to-one with the water inlets (2-1) of multiple natural cooling coils (2); each water inlet branch pipe (14) is connected to the water inlet (2-1) of the natural cooling coil (2) through a copper pipe and is equipped with a shock-absorbing pipe.

3. The water system structure of a V-type naturally cooled air-cooled screw turbine unit according to claim 1, characterized in that, The main return water pipe (6) is provided with multiple return water branch pipes (15), and the multiple return water branch pipes (15) are corresponding to the outlets (2-2) of multiple natural cooling coils (2). Each return water branch pipe (15) is connected to the outlet (2-2) of the natural cooling coil (2) through a copper pipe and is equipped with a shock-absorbing pipe.

4. The water circuit system structure of a V-type natural cooling air-cooled screw turbine unit according to claim 1, characterized in that, The bottom of the water inlet connection pipe (11) is provided with a first drain outlet (16).

5. The water system structure of a V-type naturally cooled air-cooled screw compressor unit according to claim 1, characterized in that, The bottom of the return water connection pipe (12) is provided with a second drain outlet (17).

6. The water circuit system structure of a V-type natural cooling air-cooled screw turbine unit according to claim 1, characterized in that, Each V-type condenser module (1) has a third drain outlet (18) at the manifold of the natural cooling coil (2).

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