Low-temperature gas-liquid separator

Abstract

The utility model belongs to the technical field of gas-liquid separation, and discloses a low-temperature gas-liquid separator which comprises a separator body, a gas-liquid separation assembly is installed on the surface of the separator body and comprises an inlet pipe, a gas inlet formed in the separator body is communicated with the inlet pipe, and a gas outlet is formed in the separator body. A flow gathering plate is installed at an air inlet formed in the separator body, a demister net is installed at the top end in the separator body, a supporting plate is arranged on the lower surface of the demister net, a separating plate is installed on one side of the supporting plate, and a liquid discharging plate is installed at the bottom end in the separator body. The low-temperature gas-liquid separator has the advantages that the manufacturing cost of the low-temperature gas-liquid separator can be reduced, the internal structure can be simplified, and the situation that the internal structure of the low-temperature gas-liquid separator is complex, and the requirements for economical efficiency, high efficiency and reliability of equipment in the industry are difficult to meet is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of gas-liquid separation technology, specifically a low-temperature gas-liquid separator. Background Technology

[0002] In modern industry, air separation units and LNG (liquefied natural gas) liquefaction units are key facilities for energy conversion and gas processing. Their efficient and stable operation is of great significance to industries such as energy supply and chemical production. Cryogenic gas-liquid separators, as core components of these units, undertake the critical task of separating gas-liquid mixtures, and their performance directly affects the operating efficiency and reliability of the entire system.

[0003] The working principle of cryogenic gas-liquid separators is mainly based on the gravitational difference between gas and liquid. Through a specific internal structure, the gas and liquid phases are effectively separated during the flow process. In practical applications, traditional cryogenic gas-liquid separators generally use ordinary stainless steel cylinders as the main structure and are equipped with complex components such as wire mesh demisters. The high cost and complex structure of traditional cryogenic gas-liquid separators are becoming increasingly prominent, making it difficult to meet the industry's requirements for equipment economy, efficiency and reliability, and failing to reduce the manufacturing cost of cryogenic gas-liquid separators or simplify the internal structure.

[0004] Therefore, a low-temperature gas-liquid separator is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a cryogenic gas-liquid separator, which has the advantages of reducing the manufacturing cost of cryogenic gas-liquid separators, simplifying the internal structure, and avoiding the difficulty in meeting the industry's requirements for equipment economy, efficiency and reliability due to the complex internal structure of cryogenic gas-liquid separators.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature gas-liquid separator, comprising a separator body, wherein a gas-liquid separation component is mounted on the surface of the separator body;

[0007] The gas-liquid separation assembly includes an inlet pipe, an air inlet port inside the separator body connected to the inlet pipe, a flow-gathering plate installed at the air inlet port inside the separator body, a defoaming screen installed at the top inside the separator body, a separation plate installed on one side of the defoaming screen via a support plate on its lower surface, a liquid-draining plate installed at the bottom inside the separator body, a through cavity for liquid drainage inside the liquid-draining plate, a drain pipe connected to the bottom of the separator body, an air outlet pipe connected to the top of the separator body, a liquid chamber for collecting liquid at the bottom of the separator body, the drain pipe connected to this liquid chamber, and a liquid guiding assembly installed inside the separator body.

[0008] Preferably, the surface of the flow-concentrating plate is cut into an inclined structure with an upward tangent.

[0009] Preferably, a filter screen is installed at the air inlet of the flow-concentrating plate.

[0010] Preferably, the separation plate has a positive V-shaped structure.

[0011] Preferably, the surface of the separation plate is provided with separation holes for liquid separation.

[0012] Preferably, the liquid guiding assembly includes a guide plate, the surface of the lower liquid plate is connected to the guide plate, a flow plate is disposed between the guide plate and the flow concentrator, the flow plate is connected to a flow cavity opened inside the lower liquid plate, and a liquid guiding plate is installed on the side surface of the guide plate away from the flow concentrator.

[0013] Preferably, the guide plate is disposed on one side of the bottom of the separation plate.

[0014] Preferably, the surface of the guide plate near the flow-gathering plate has an oblique cut structure, and the tangent direction is upward.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model utilizes the combined use of a flow-gathering plate, a defoaming screen, and a separation plate to fully utilize the space within the separator body. This allows the gas-liquid mixture to undergo multiple separations during its ascent, ensuring separation effectiveness and achieving gas-liquid separation. This effectively improves gas-liquid separation efficiency and avoids the situation where the internal structure of the separator body is too complex, making it difficult to meet the industry's requirements for equipment economy, efficiency, and reliability.

[0017] 2. This utility model, through the combined use of guide plate, flow plate and liquid guide plate, enables the inlet gas-liquid mixture to be guided and the separated liquid to be effectively guided to the liquid chamber at the bottom of the separator body, avoiding disorderly flow or residue of liquid in the separator body and ensuring smooth discharge of liquid. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the separator body of this utility model;

[0020] Figure 3 This is a schematic diagram of the diversion flow trajectory structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the flow-concentrating plate and filter screen of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the guide plate and liquid guiding plate of this utility model;

[0023] Figure 6 This is a schematic diagram of the separation plate structure of this utility model.

[0024] In the diagram: 1. Separator body; 2. Gas-liquid separation assembly; 21. Inlet pipe; 22. Condensing plate; 23. Defoaming screen; 24. Support plate; 25. Separation plate; 26. Liquid drain plate; 27. Drain pipe; 28. Gas outlet pipe; 29. ​​Filter screen; 3. Liquid guiding assembly; 31. Guide plate; 32. Liquid flow plate; 33. Liquid guiding plate. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 6 As shown, this utility model provides a low-temperature gas-liquid separator, including a separator body 1, and a gas-liquid separation component 2 is installed on the surface of the separator body 1.

[0027] The gas-liquid separation component 2 includes an inlet pipe 21. An air inlet 21 is connected to the inlet port inside the separator body 1. A flow-gathering plate 22 is installed at the air inlet hole inside the separator body 1. A defoaming screen 23 is installed at the top inside the separator body 1. The defoaming screen 23 is supported by a support plate 24 on its lower surface, and a separation plate 25 is installed on one side of the support plate 24. A liquid drain plate 26 is installed at the bottom inside the separator body 1. The liquid drain plate 26 has a cavity for liquid drainage. A drain pipe 27 connects to the bottom of the separator body 1, and a drain pipe 27 connects to the top of the separator body 1. There is an air outlet pipe 28, and a liquid chamber for collecting liquid is opened at the bottom of the separator body 1. The drain pipe 27 is connected to this liquid chamber. The liquid guiding component 3 is installed inside the separator body 1. Through the cooperation of the flow gathering plate 22, the foam breaking screen 23 and the separation plate 25, the space inside the separator body 1 is fully utilized, so that the gas-liquid mixture undergoes multiple separations during the rising process, ensuring the separation effect and realizing the separation of gas and liquid. This effectively improves the gas-liquid separation efficiency and avoids the fact that the internal structure of the separator body 1 is relatively complex, which makes it difficult to meet the industry's requirements for equipment economy, efficiency and reliability.

[0028] It should be noted that the lower liquid plate 26 has a hollow structure and is used for the lower liquid treatment after separation.

[0029] Specifically, the surface of the flow-concentrating plate 22 is cut into an upward tangential bevel structure, which can guide the gas-liquid mixture.

[0030] like Figures 1 to 6 As shown, a filter screen 29 is installed at the air inlet of the flow concentrator 22, which can filter the incoming gas-liquid mixture and remove impurities.

[0031] Furthermore, the separation plate 25 has a positive V-shaped structure, which enables the liquid to be collected and processed, making it convenient to collect the liquid.

[0032] like Figures 1 to 6 As shown, the surface of the separation plate 25 is provided with separation holes for liquid separation, thereby improving the separation effect of gas-liquid mixture.

[0033] It is worth noting that the liquid guiding assembly 3 includes a guide plate 31, the surface of the lower liquid plate 26 is connected to the guide plate 31, a flow plate 32 is provided between the guide plate 31 and the flow concentrator 22, the flow plate 32 is connected to the flow cavity opened inside the lower liquid plate 26, and a liquid guiding plate 33 is installed on the side surface of the guide plate 31 away from the flow concentrator 22. Through the cooperative use of the guide plate 31, the flow plate 32 and the flow plate 33, the incoming gas-liquid mixture can be guided, and the separated liquid can be effectively guided to the liquid cavity at the bottom of the separator body 1, avoiding disorderly flow or residue of liquid in the separator body 1, and ensuring smooth discharge of liquid.

[0034] like Figures 1 to 6 As shown, the guide plate 31 is disposed on one side of the bottom of the separation plate 25, so as to guide the liquid dripping from the separation plate 25.

[0035] It is worth emphasizing that the surface of the guide plate 31 near the flow-concentrating plate 22 has an oblique cut structure with the tangent direction upward, which can guide the gas vertically and the liquid downward.

[0036] Among them, the structure of the separator body 1 is existing technology and is not the main technical point of this patent, so it will not be described in detail. Its working principle is a well-known technology, and the appropriate model should be selected according to actual use.

[0037] Working principle and process: The gas-liquid mixture enters the separator body 1 through the inlet pipe 21. Since the surface of the flow-concentrating plate 22 is cut with an upward tangential line to form a "sloping structure", when the gas-liquid mixture enters the flow-concentrating plate 22, the gas flows into the air inlet along the slope. The filter screen 29 installed at the air inlet of the flow-concentrating plate 22 can filter out any impurities that may exist in the gas-liquid mixture, ensuring the smooth progress of the subsequent separation process. After the gas-liquid mixture is initially separated by the flow-concentrating plate 22, it continues to flow upward. Since the guide plate 31 has a "sloping tangential structure" and the tangential line is upward, the gas-liquid mixture flows upward along the guide plate 31. The gas-liquid mixture impacts the guide plate 31 at this time, and since the weight of the liquid is greater than that of the gas, the liquid slides down the slope of the guide plate 31. The liquid then flows into the liquid cavity opened at the bottom of the separator body 1 along the liquid flow plate 32 and the lower liquid plate 26, thus performing the initial gas-liquid separation process.

[0038] When the gas-liquid mixture flows upward along the guide plate 31, it comes into contact with the separation plate 25 mounted on the surface of the support plate 24. The separation plate 25 has a "V" shaped structure and separation holes for liquid separation. When the gas-liquid mixture flows through the separation plate 25, the gas continues to flow upward through the separation holes, while the liquid gathers on the "V" shaped separation plate 25 and flows down its surface. The liquid drips down the separation plate 25 onto the surface of the liquid guide plate 33, allowing the liquid to flow down the liquid guide plate 33 through the lower liquid plate 26 into the liquid cavity at the bottom of the separator body 1. This helps guide the liquid flow and ensures that the liquid can flow smoothly into the liquid cavity.

[0039] At this time, the gas continues to flow upward along the separation plate 25 and reaches the defoaming screen 23 at the top of the separator body 1. The defoaming screen 23 can further break and separate the fine liquid droplets carried in the gas, so that the gas and liquid are separated more fully. Then the gas enters the outlet pipe 28 upward, realizing the separation treatment of the gas.

[0040] The dripping liquid enters the liquid chamber at the bottom of the separator body 1, and then flows out through the drain pipe 27, thereby achieving liquid separation.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 low-temperature gas-liquid separator, comprising a separator body, characterized in that: A gas-liquid separation assembly is installed on the surface of the separator body; The gas-liquid separation assembly includes an inlet pipe, an air inlet port inside the separator body connected to the inlet pipe, a flow-gathering plate installed at the air inlet port inside the separator body, a defoaming screen installed at the top inside the separator body, a separation plate installed on one side of the defoaming screen via a support plate on its lower surface, a liquid-draining plate installed at the bottom inside the separator body, a through cavity for liquid drainage inside the liquid-draining plate, a drain pipe connected to the bottom of the separator body, an air outlet pipe connected to the top of the separator body, a liquid chamber for collecting liquid at the bottom of the separator body, the drain pipe connected to this liquid chamber, and a liquid guiding assembly installed inside the separator body.

2. The low-temperature gas-liquid separator according to claim 1, characterized in that: The surface of the flow-gathering plate is cut into a beveled structure with an upward tangent.

3. A low-temperature gas-liquid separator according to claim 1, characterized in that: A filter screen is installed at the air inlet of the flow-concentrating plate.

4. A low-temperature gas-liquid separator according to claim 1, characterized in that: The separation plate has a positive V-shaped structure.

5. A low-temperature gas-liquid separator according to claim 1, characterized in that: The surface of the separation plate is provided with separation holes for liquid separation.

6. A low-temperature gas-liquid separator according to claim 1, characterized in that: The liquid guiding assembly includes a guide plate, the surface of the lower liquid plate is connected to the guide plate, a flow plate is disposed between the guide plate and the flow concentrator, the flow plate is connected to a flow cavity opened inside the lower liquid plate, and a liquid guiding plate is installed on the side surface of the guide plate away from the flow concentrator.

7. A low-temperature gas-liquid separator according to claim 6, characterized in that: The guide plate is disposed on one side of the bottom of the separation plate.

8. A low-temperature gas-liquid separator according to claim 6, characterized in that: The guide plate has a beveled surface on the side near the flow-gathering plate, with the tangent pointing upwards.

Images