Horizontal gas-liquid separator

Abstract

The utility model relates to refrigeration equipment technical field, concretely is horizontal gas -liquid separator technical field, the horizontal gas -liquid separator includes: shell, the shell includes cylinder, wherein, the both ends of cylinder are installed left end cap and right end cap respectively, left end cap and right end cap constitute the pressurized flared mouth shape at the both ends of cylinder, and the eccentric position of left end cap and the eccentric position of right end cap all pass through regenerative tube, and regenerative tube penetrates in the inside of cylinder, simultaneously, the middle position of cylinder upper end is connected with inlet pipe, and the both sides of the middle position of cylinder lower end are symmetrically installed with return gas pipe assembly respectively, return gas pipe assembly includes return gas pipe and return gas elbow, and return gas elbow is U shape, and return gas pipe is installed with oil return hole simultaneously, the horizontal gas -liquid separator not only can further promote the heat exchange efficiency of refrigeration system whole, but also can effectively avoid compressor liquid knock.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically to the field of horizontal gas-liquid separator technology. Background Technology

[0002] In a refrigeration system, a gas-liquid separator is located between the evaporator outlet and the compressor suction port. It uses principles such as gravity settling, centrifugal force, collision, and wire mesh filtration to separate incompletely evaporated liquid refrigerant droplets or oil droplets from the gas flow at the evaporator outlet, causing them to accumulate at the bottom of the separator. Only gaseous refrigerant (and a small amount of lubricating oil) is allowed to enter the compressor. The separated liquid is slowly and controllably returned to the low-pressure side of the system through a small orifice or ejector tube for further evaporation. Regenerators are commonly used devices to improve refrigeration efficiency (COP). They use low-temperature, low-pressure gaseous refrigerant from the evaporator to cool high-temperature, high-pressure liquid refrigerant from the condenser. This increases the subcooling of the cooled high-pressure liquid refrigerant before it enters the throttling device. A greater subcooling means that the liquid refrigerant has a lower dryness when it enters the evaporator after passing through the throttling device, and absorbs a higher proportion of latent heat during the evaporation process, thereby increasing the refrigeration capacity per unit refrigerant flow rate. In related technologies, the gas-liquid separator and the regenerator are two completely independent components in the structural design of the refrigeration system. This discrete design leads to a complex overall refrigeration system structure, requiring additional piping and joints, increasing manufacturing costs and leakage risks. It also results in a large space occupation, as the two independent components require more installation space, which is a significant challenge for space-constrained applications. In addition, there is the issue of pipeline pressure drop loss. Connecting pipelines increase the flow resistance (pressure drop) of the refrigerant. Excessive pressure drop on the low-pressure side directly leads to a decrease in compressor suction pressure, reducing system efficiency. More importantly, the discrete design may result in an inefficient heat transfer path. For example, the regenerator usually needs to be installed before or after the gas-liquid separator, and the refrigerant flow path may not be the most direct and efficient. The low-temperature liquid accumulated inside the gas-liquid separator itself has cooling capacity, but in a discrete design, this cooling capacity is usually not effectively utilized to subcool the high-pressure liquid refrigerant. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a horizontal gas-liquid separator, which achieves cold energy recovery, compact structure and minimized pressure drop while ensuring separation efficiency, thereby improving the reliability and energy efficiency of the system.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A horizontal gas-liquid separator, the horizontal gas-liquid separator comprising: The outer shell includes a cylindrical body, wherein a left end cap and a right end cap are respectively installed at the front and rear ends of the cylindrical body. The left end cap and the right end cap form a pressurized flared shape at the front and rear ends of the cylindrical body. A heat recovery pipe passes through the eccentric position of the left end cap and the eccentric position of the right end cap. The heat recovery pipe runs through the inside of the cylindrical body. Meanwhile, an air inlet pipe is connected at the middle position of the upper end of the cylinder, and air return pipe assemblies are symmetrically installed on both sides at the middle position of the lower end of the cylinder. The return air pipe assembly includes a return air pipe and a return air elbow. The return air elbow is U-shaped, and an oil return hole is installed inside the return air pipe.

[0005] Preferably, the upper outer side of the cylinder is also provided with a safety valve interface and an exhaust valve interface.

[0006] Preferably, the lower outer end of the cylinder is also provided with a drain outlet.

[0007] Preferably, two supports are symmetrically distributed at the lower end of the outer side of the cylinder, and the cross-section of the supports is equilateral triangle.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The horizontal gas-liquid separator allows the low-temperature gas-liquid mixed refrigerant inside the shell to exchange heat with the high-temperature liquid refrigerant in the heat recovery tube. This causes the low-temperature gaseous refrigerant inside the shell to absorb heat and become superheated low-temperature gaseous refrigerant, while the high-temperature liquid refrigerant in the heat recovery tube cools down and becomes supercooled high-temperature liquid refrigerant, thus forming a cycle that includes refrigerant supercooling and superheating processes. This not only further improves the overall heat exchange efficiency of the refrigeration system, but also effectively prevents compressor liquid slugging. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of a horizontal gas-liquid separator according to the present invention.

[0011] Figure 2 This is a front view of a horizontal gas-liquid separator according to the present invention.

[0012] Figure 3 This is a side view of a horizontal gas-liquid separator according to the present invention.

[0013] In the diagram: 1-outer shell, 1-1-left end cap, 1-2-cylinder body, 1-3-right end cap, 2-safety valve interface, 3-exhaust valve interface, 4-inlet pipe, 5-heat recovery pipe, 6-drain outlet, 7-support, 8-return pipe assembly, 8-1-return pipe, 8-2-oil return hole, 8-3-return elbow. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a technical solution: A horizontal gas-liquid separator, the horizontal gas-liquid separator comprising: The outer shell 1 includes a cylindrical body 1-2, wherein a left end cap 1-1 and a right end cap 1-3 are respectively installed at the front and rear ends of the cylindrical body 1-2. The left end cap 1-1 and the right end cap 1-3 form a pressure-boosting flared shape at the front and rear ends of the cylindrical body 1-2. The heat recovery pipe 5 passes through the eccentric position of the left end cap 1-1 and the eccentric position of the right end cap 1-3. The heat recovery pipe 5 passes through the interior of the cylindrical body 1-2. Meanwhile, an air inlet pipe 4 is connected at the middle position of the upper end of the cylinder 1-2, and return air pipe assemblies 8 are symmetrically installed on both sides at the middle position of the lower end of the cylinder 1-2. The set air return pipe assembly 8 includes an air return pipe 8-1 and an air return elbow 8-3. The air return elbow 8-3 is U-shaped, and an oil return hole 8-2 is installed inside the air return pipe 8-1. In an embodiment of this utility model, when the horizontal gas-liquid separator is used, the inlet pipe 4, located at the middle of the upper end of the cylinder 1-2, is connected to the evaporator outlet of the refrigeration system. The low-temperature gas-liquid mixed refrigerant discharged from the evaporator outlet enters the interior of the cylinder 1-2 through the inlet pipe 4. After entering the interior of the cylinder 1-2, the low-temperature gas-liquid mixed refrigerant achieves gas-liquid separation through gravity settling. At this time, the high-temperature liquid refrigerant enters through the heat recovery pipe 5 from the left end cap 1-1, penetrates the cylinder 1-2, and flows out from the right end cap 1-3. During this process, the low-temperature gas-liquid mixed refrigerant inside the outer shell 1 exchanges heat with the high-temperature liquid refrigerant in the heat recovery pipe 5, causing the low-temperature gaseous refrigerant inside the outer shell 1 to absorb heat and become superheated low-temperature gaseous refrigerant, while the high-temperature liquid refrigerant in the heat recovery pipe 5 cools down and becomes supercooled high-temperature liquid refrigerant, forming a cycle containing refrigerant supercooling and superheating processes. After the liquid refrigerant completes its circulation, it is drawn into the return pipe 8-1 in the return pipe assembly 8 and flows out through the return pipe elbow 8-3. The return pipe 8-1 is provided with an oil return hole 8-2. The setting of the oil return hole 8-2 helps to recover the lubricating oil in the refrigerant and prevent its loss. By designing the return pipe elbow 8-3 into a U-shape, a liquid level difference can be created in the return pipe elbow 8-3, forming a liquid seal inside the return pipe elbow 8-3, which prevents the refrigerant from flowing back through 8- under certain conditions. Please see Figure 1 and Figure 2 In one embodiment of this utility model, a safety valve interface 2 and an exhaust valve interface 3 are respectively provided on the upper outer side of the cylinder 1-2; the safety valve interface 2 and the exhaust valve interface 3 located on the upper outer side of the cylinder 1-2 work together to ensure that when the internal pressure of 1- is abnormal during operation, the pressure can be released in time to ensure the safe operation of the entire 1-. Please see Figure 1 and Figure 2 In one embodiment of the present invention, a drain port 6 is provided at the lower outer end of the cylinder 1-2. The drain port 6 located at the lower outer end of the cylinder 1-2 is used to discharge dirt and accumulated liquid inside the cylinder 1-2, thereby maintaining the cleanliness and efficient operation of the entire 1-equipment. In addition, two supports 7 are symmetrically distributed at the front and rear of the lower outer side of the cylinder 1-2. The cross-section of the supports 7 is equilateral triangle. By setting two triangular supports 7, the stability of the entire horizontal gas-liquid separator during placement or operation can be improved. The workflow of this embodiment is as follows: The low-temperature gas-liquid mixed refrigerant discharged from the evaporator outlet enters the interior of cylinder 1-2 through the inlet pipe 4. After entering the interior of cylinder 1-2, the low-temperature gas-liquid mixed refrigerant achieves gas-liquid separation through gravity settling. At this time, the high-temperature liquid refrigerant enters through the heat recovery pipe 5 from the left end cap 1-1, passes through cylinder 1-2, and flows out from the right end cap 1-3. During this process, the low-temperature gas-liquid mixed refrigerant inside the outer shell 1 exchanges heat with the high-temperature liquid refrigerant in the heat recovery pipe 5, causing the low-temperature gaseous refrigerant inside the outer shell 1 to absorb heat and become superheated low-temperature gaseous refrigerant, while the high-temperature liquid refrigerant in the heat recovery pipe 5 cools down and becomes supercooled high-temperature liquid refrigerant, forming a cycle containing refrigerant supercooling and superheating processes. After the liquid refrigerant completes its circulation, it is drawn into the return pipe 8-1 in the return pipe assembly 8 and flows out through the return pipe elbow 8-3. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal gas-liquid separator, characterized in that... include: The outer shell (1) includes a cylindrical body (1-2), wherein a left end cap (1-1) and a right end cap (1-3) are respectively installed at the front and rear ends of the cylindrical body (1-2). The left end cap (1-1) and the right end cap (1-3) form a pressurized flared shape at the front and rear ends of the cylindrical body (1-2). The heat recovery pipe (5) passes through the eccentric position of the left end cap (1-1) and the eccentric position of the right end cap (1-3). The heat recovery pipe (5) runs through the inside of the cylindrical body (1-2). Meanwhile, an air inlet pipe (4) is connected at the middle position of the upper end of the cylinder (1-2), and air return pipe assemblies (8) are symmetrically installed on both sides at the middle position of the lower end of the cylinder (1-2); the air return pipe assembly (8) includes an air return pipe (8-1) and an air return elbow (8-3), the air return elbow (8-3) is U-shaped, and an oil return hole (8-2) is installed inside the air return pipe (8-1).

2. A horizontal gas-liquid separator according to claim 1, characterized in that: The upper outer side of the cylinder (1-2) is also provided with a safety valve interface (2) and an exhaust valve interface (3).

3. A horizontal gas-liquid separator according to claim 1, characterized in that: The lower outer side of the cylinder (1-2) is also provided with a drain outlet (6).

4. A horizontal gas-liquid separator according to claim 1, characterized in that: Two supports (7) are symmetrically distributed at the front and rear of the lower outer side of the cylinder (1-2), and the cross section of the supports (7) is an equilateral triangle.

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