Vertical liquid storage tank with heat regeneration and gas-liquid separation functions

Abstract

The utility model belongs to the technical field of liquid storage devices, and provides a vertical liquid storage tank with heat regeneration and gas-liquid separation functions, which comprises an inner cylinder, a heat medium inlet pipe group arranged at the top end of the inner cylinder, a heat medium outlet pipe group arranged at the bottom end of the inner cylinder and an outer cylinder sleeved on the outer side of the inner cylinder. A cold medium cavity is formed between the outer barrel and the inner barrel, a cold medium inlet pipe set and a cold medium outlet pipe set are arranged at the top end of the outer barrel, an oil return pipe set is arranged at the bottom end of the outer barrel, a partition plate parallel to the length direction of the inner barrel is arranged in the cold medium cavity, and the two side edges of the partition plate are connected to the inner barrel and the outer barrel respectively. The vertical liquid storage tank has the liquid storage function, the gas-liquid separation function and the heat regeneration function, and the problems that an existing liquid storage tank, an existing gas-liquid separator and an existing heat regenerator only have a single function, and a refrigerating system unit is complex in arrangement due to the fact that a plurality of components are arranged are solved.

Description

Technical Field

[0001] The utility model belongs to the field of liquid storage devices, and in particular relates to a vertical liquid storage tank with heat recovery and gas-liquid separation functions. Background Art

[0002] In the refrigeration system, a liquid storage tank is usually set between the condenser and the expansion valve to store the high-pressure refrigerant liquid discharged from the condenser, which plays the role of supplying and regulating the liquid supply of the system. Sometimes a gas-liquid separator or regenerator is also set between the evaporator and the compressor inlet. The gas-liquid separator can prevent a large amount of liquid from entering the compressor and causing compressor liquid hammer. The regenerator can increase the compressor suction temperature to reduce harmful overheating and improve the working conditions of the compressor.

[0003] At present, the liquid storage tank, gas-liquid separator and heat regenerator all have only a single function. The large number of components makes the layout of the refrigeration system unit more complicated, and at the same time, the heat of the liquid refrigerant is not fully utilized, and the refrigeration system efficiency is low. Utility Model Content

[0004] In view of the above problems, the utility model provides a vertical liquid storage tank with heat recovery and gas-liquid separation functions, aiming to solve the problem that the current liquid storage tank, gas-liquid separator and heat regenerator only have a single function and more components make the layout of the refrigeration system unit complicated.

[0005] The utility model adopts the following technical solutions:

[0006] The vertical liquid storage tank with heat recovery and gas-liquid separation functions comprises an inner cylinder, a hot medium inlet pipe group is arranged at the top end of the inner cylinder, a hot medium outlet pipe group is arranged at the bottom end of the inner cylinder, an outer cylinder is sleeved on the outer side of the inner cylinder, a cold medium cavity is formed between the outer cylinder and the inner cylinder, a cold medium inlet pipe group and a cold medium outlet pipe group are arranged at the top end of the outer cylinder, an oil return pipe group is arranged at the bottom end of the outer cylinder, a partition plate parallel to the length direction of the inner cylinder is arranged in the cold medium cavity, two sides of the partition plate are respectively connected to the inner cylinder and the outer cylinder, one end of the partition plate extends to the top end of the outer cylinder, and the other end of the partition plate is kept at a certain distance from the bottom end of the outer cylinder.

[0007] Furthermore, a plurality of fins are evenly spaced around the inner tube in the cold medium cavity, and the fins are arranged along the length direction of the inner tube and one side edge thereof is connected to the inner tube.

[0008] Furthermore, the inner cylinder includes an inner cylinder body, and the two ends of the inner cylinder body are respectively sealed with an inner cylinder upper head and an inner cylinder lower head, the hot medium inlet pipe group is connected to the inner cylinder upper head, and the hot medium outlet pipe group is connected to the inner cylinder lower head, and the outer cylinder includes an outer cylinder body, and the outer cylinder body is sleeved on the inner cylinder body, and the two ends of the outer cylinder body are respectively sealed with an outer cylinder upper sealing ring and an outer cylinder lower sealing ring, and the inner sides of the outer cylinder inner sealing ring and the outer cylinder lower sealing ring are also sealed and connected to the inner cylinder, the cold medium inlet pipe group and the cold medium outlet pipe group are connected to the outer cylinder, and the return oil pipe group is connected to the inner cylinder lower head.

[0009] Furthermore, a fixing plate is arranged below the outer cylinder, and a plurality of vertically arranged supporting legs are arranged between the fixing plate and the outer cylinder, and two ends of the supporting legs are respectively fixedly connected to the lower sealing ring of the outer cylinder body and the fixing plate.

[0010] The beneficial effects of the utility model are:

[0011] 1. The inner cylinder in this vertical liquid storage tank has the function of storing liquid, which is used to store heat medium (high-pressure and high-temperature liquid refrigerant) and supply liquid refrigerant to the evaporator according to the needs of the refrigeration system.

[0012] 2. The cold medium (low-pressure and low-temperature gaseous refrigerant) flows in the cold medium cavity between the outer cylinder and the inner cylinder in this vertical liquid storage tank. The cold medium flows from the top to the bottom in the cold medium cavity, and then flows to the top. A small amount of liquid droplets carried in the gaseous refrigerant are intercepted, which plays a role in gas-liquid separation, avoiding returning to the compressor suction port and causing compressor failure. At the same time, the compressor lubricating oil carried in the gaseous refrigerant is intercepted and gathered at the sealing ring under the outer cylinder. It can flow out through the return oil pipe and flow back to the compressor through the pipeline system, avoiding compressor failure due to lack of oil.

[0013] 3. The cold medium in the vertical liquid storage tank exchanges heat with the hot medium through the fins and the inner cylinder wall, which can reduce the temperature of the hot medium and increase the temperature of the cold medium, thereby increasing the efficiency of the entire refrigeration system.

[0014] 4. This vertical liquid storage tank has the functions of liquid storage, gas-liquid separation, and heat recovery, and its small size is more conducive to the overall layout of the refrigeration unit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a vertical liquid storage tank provided by the utility model.

[0016] Figure 2 It is a partial structural schematic diagram of a vertical liquid storage tank provided by the utility model.

[0017] Figure 3 This is the main view of the vertical liquid storage tank provided by the utility model DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0020] For the convenience of explanation, only the parts related to the embodiment of the present utility model are shown.

[0021] Combination Figure 1-3 As shown, Figure 3 The black arrow indicates the flow direction of the cold medium, and the white arrow indicates the flow direction of the hot medium. The vertical liquid storage tank with heat recovery and gas-liquid separation functions includes an inner cylinder, which includes an inner cylinder body 3. The two ends of the inner cylinder body are respectively sealed with an inner cylinder body upper head 2 and an inner cylinder body lower head 4. A hot medium inlet pipe group 1 is arranged on the inner cylinder upper head, and a hot medium outlet pipe group 5 is arranged on the inner cylinder lower head. The outer cylinder is sleeved on the outer side of the inner cylinder, and a cold medium cavity is formed between the outer cylinder and the inner cylinder. The outer cylinder includes an outer cylinder body 8, which is sleeved on the inner cylinder, and the two ends of the outer cylinder are respectively sealed with an outer cylinder upper sealing ring 6 And the lower sealing ring 10 of the outer cylinder, the inner sealing ring of the outer cylinder and the inner side edges of the lower sealing ring of the outer cylinder are also sealed and connected to the inner cylinder, the inner sealing ring of the outer cylinder is provided with a cold medium inlet pipe group 7 and a cold medium outlet pipe group 9, the lower sealing ring of the outer cylinder is provided with an oil return pipe group 11, and a partition plate 12 parallel to the length direction of the inner cylinder is provided in the cold medium cavity, and the two side edges of the partition plate are respectively connected to the inner cylinder and the outer cylinder, one end of the partition plate extends to the top end of the outer cylinder, and the other end of the partition plate leaves a certain distance from the bottom end of the outer cylinder, so as to facilitate the communication between the hot medium inlet pipe group and the hot medium outlet pipe group connected to the outer cylinder.

[0022] The inner cylinder is used to supply and store liquid refrigerant with higher temperature and pressure. The partition plate divides the cold medium cavity. The gaseous refrigerant with lower temperature and pressure enters the top of the cold medium cavity from the cold medium inlet pipe group, then flows to the bottom of the cold medium cavity, then flows to the top of the cold medium cavity, and finally is discharged through the cold medium outlet pipe group. A small amount of liquid droplets carried in the gaseous refrigerant are intercepted, which plays a role in gas-liquid separation, avoiding returning to the compressor suction port and causing compressor failure. At the same time, the compressor lubricating oil carried in the gaseous refrigerant is intercepted and gathered at the sealing ring under the outer cylinder, which can flow out through the return oil pipe and return to the compressor through the pipeline system to avoid compressor failure due to lack of oil. The cold medium and the hot medium exchange heat through the inner cylinder wall, which can reduce the temperature of the hot medium and increase the temperature of the cold medium, thereby increasing the efficiency of the entire refrigeration system.

[0023] Combination Figure 2As shown, as a preferred structure, a plurality of fins 13 are evenly spaced around the inner tube in the cold medium cavity, and the fins are arranged along the length direction of the inner tube and one side of the fins is connected to the inner tube. The fins are evenly arranged in the cold medium cavity to increase the heat exchange area between the cold medium and the hot medium, thereby improving the heat exchange efficiency.

[0024] Combination Figure 1 As shown, as a preferred structure, a fixing plate 15 is arranged below the outer cylinder, and a plurality of vertically arranged supporting legs 14 are arranged between the fixing plate and the outer cylinder, and the two ends of the supporting legs are respectively fixed to the sealing ring under the outer cylinder and the fixing plate. The supporting legs and the fixing plate constitute a supporting body, which is used to support and fix the entire device.

[0025] In summary: the utility model provides a vertical liquid storage tank with heat recovery and gas-liquid separation functions. The inner cylinder in the vertical liquid storage tank has the function of storing liquid, which is used to store heat medium (high-pressure and high-temperature liquid refrigerant), and supply liquid refrigerant to the evaporator according to the needs of the refrigeration system; the cold medium (low-pressure and low-temperature gaseous refrigerant) flows in the cold medium cavity between the outer cylinder and the inner cylinder in the vertical liquid storage tank, and the cold medium flows from the top to the bottom in the cold medium cavity, and then flows to the top. A small amount of liquid droplets carried in the gaseous refrigerant are intercepted, which plays a role in gas-liquid separation and avoids returning to the compression The compressor suction port is blocked, causing compressor failure. At the same time, the compressor lubricating oil carried by the gaseous refrigerant is intercepted and gathered at the sealing ring below the outer cylinder. It can flow out through the oil return pipe and return to the compressor through the pipeline system, avoiding compressor failure due to lack of oil. The cold medium in the vertical liquid storage tank exchanges heat with the hot medium through the fins and the inner cylinder wall, which can reduce the temperature of the hot medium and increase the temperature of the cold medium, thereby increasing the efficiency of the entire refrigeration system. The vertical liquid storage tank has the functions of liquid storage, gas-liquid separation, and heat recovery at the same time, and is small in size, which is more conducive to the overall layout of the refrigeration unit system.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the present utility model.

Claims

1. A vertical liquid storage tank with heat recovery and gas-liquid separation functions, characterized in that: It comprises an inner cylinder, a hot medium inlet pipe group is arranged at the top end of the inner cylinder, a hot medium outlet pipe group is arranged at the bottom end of the inner cylinder, an outer cylinder is sleeved on the outer side of the inner cylinder, a cold medium cavity is formed between the outer cylinder and the inner cylinder, a cold medium inlet pipe group and a cold medium outlet pipe group are arranged at the top end of the outer cylinder, an oil return pipe group is arranged at the bottom end of the outer cylinder, a partition plate parallel to the length direction of the inner cylinder is arranged in the cold medium cavity, two sides of the partition plate are respectively connected to the inner cylinder and the outer cylinder, one end of the partition plate extends to the top end of the outer cylinder, and the other end of the partition plate leaves a certain distance from the bottom end of the outer cylinder.

2. The vertical liquid storage tank with heat recovery and gas-liquid separation functions according to claim 1 is characterized in that: A plurality of fins are evenly spaced around the inner cylinder in the cold medium cavity. The fins are arranged along the length direction of the inner cylinder and one side edge thereof is connected to the inner cylinder.

3. The vertical liquid storage tank with heat recovery and gas-liquid separation functions according to claim 1 or 2, characterized in that: The inner cylinder comprises an inner cylinder body, and the two ends of the inner cylinder body are respectively sealed with an inner cylinder upper head and an inner cylinder lower head, the hot medium inlet pipe group is connected to the inner cylinder upper head, and the hot medium outlet pipe group is connected to the inner cylinder lower head, the outer cylinder comprises an outer cylinder body, the outer cylinder body is sleeved on the inner cylinder body, and the two ends of the outer cylinder body are respectively sealed with an outer cylinder upper sealing ring and an outer cylinder lower sealing ring, and the inner sides of the outer cylinder inner sealing ring and the outer cylinder lower sealing ring are also sealed and connected to the inner cylinder, the cold medium inlet pipe group and the cold medium outlet pipe group are connected to the outer cylinder body, and the oil return pipe group is connected to the inner cylinder lower head.

4. The vertical liquid storage tank with heat recovery and gas-liquid separation functions according to claim 3 is characterized in that: A fixing plate is arranged below the outer cylinder, and a plurality of vertically arranged supporting legs are arranged between the fixing plate and the outer cylinder. The two ends of the supporting legs are respectively fixedly connected to the lower sealing ring of the outer cylinder body and the fixing plate.

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