A gas-liquid separator

Abstract

The invention discloses a gas-liquid separator, comprising an outer shell with closed ends, an inner tube, a protective net, a filler, a filter assembly, a liquid inlet pipe and a liquid outlet pipe; the inner tube is located inside the outer shell, the liquid inlet pipe is located at one end of the outer shell, and the liquid inlet pipe penetrates one side wall of the outer shell, and the liquid outlet pipe is located at the other end of the outer shell; the inner tube is connected to a protective net at one end close to the liquid inlet pipe, a baffle is connected to one end between the inner tube and the outer shell close to the liquid outlet pipe, and at least one through hole is opened on the inner wall of the inner tube close to the baffle and located on the opposite side of the liquid outlet pipe; a filler is arranged between the inner tube and the outer shell, and the filler is arranged between the protective net and the baffle; a filter assembly is arranged inside one end of the inner tube close to the liquid outlet pipe, and the filter assembly is connected to the liquid outlet pipe; an air outlet is arranged at one end of the outer shell close to the liquid inlet pipe. The device can perform three-level gas-liquid separation on the solution, increase its gas-liquid separation capacity and the suction capacity of the solution pump in the unit, so that the solution of the unit is better circulated.

Description

Technical Field

[0001] The present invention relates to the technical field related to absorption units, and in particular to a gas-liquid separator. Background Art

[0002] The direct-fired absorption unit is mainly composed of a generator, an absorber, a solution pump, an evaporator, a condenser and a throttling mechanism. A gas-liquid separator is generally connected between the absorber and the solution pump. Its gas-liquid separation ability is crucial to the suction of the solution pump and is used to ensure the circulation of the solution in the entire unit. When the unit is defrosting, a large amount of gas will enter the absorber, resulting in less internal solution in the absorber, making it impossible for the solution pump to pump the solution, resulting in poor suction capacity of the solution pump, which will affect the circulation of the solution in the entire unit. Summary of the invention

[0003] In view of the above shortcomings of the prior art, the present invention provides a gas-liquid separator for solving the problem of poor suction capacity of the solution pump caused by a large amount of gas entering the absorber during defrosting in the prior art.

[0004] In order to solve the above problems, the present invention adopts the following technical scheme: a gas-liquid separator, comprising an outer shell with closed ends, an inner tube, a protective net, a filler, a filter assembly, a liquid inlet pipe and a liquid outlet pipe; the inner tube is located inside the outer shell, the liquid inlet pipe is located at one end of the outer shell, and the liquid inlet pipe penetrates one side wall of the outer shell, and the liquid outlet pipe is located at the other end of the outer shell; the inner tube is connected to the protective net at one end close to the liquid inlet pipe, and the protective net extends to the inner wall of the outer shell on all sides, a baffle is connected to the end close to the liquid outlet pipe between the inner tube and the outer shell, and at least one through hole is opened on the inner wall of the inner tube close to the baffle and located on the opposite side of the liquid outlet pipe; a filler is arranged between the inner tube and the outer shell, and the filler is arranged between the protective net and the baffle; a filter assembly is arranged inside the end of the inner tube close to the liquid outlet pipe, and the filter assembly is connected to the liquid outlet pipe; an air outlet is arranged at one end of the outer shell close to the liquid inlet pipe.

[0005] Optionally, the shell further comprises a first seal and a second seal, the first seal is located at one end of the shell close to the liquid inlet pipe, and the second seal is located at one end of the shell close to the liquid outlet pipe.

[0006] Optionally, a valve is also provided at the air outlet of the shell.

[0007] Optionally, the shortest distance between the through hole and the baffle is 18 mm.

[0008] Optionally, the through hole is circular, arc-shaped or polygonal.

[0009] Optionally, the packing comprises Raschig rings or Pall rings.

[0010] The present invention provides a gas-liquid separator, wherein a filler is arranged between an inner tube and an outer tube, and a through hole is arranged on the tube wall of the inner tube. By using the device, a solution with a high gas content can be subjected to three-stage gas-liquid separation to obtain a solution that is entirely liquid or has a greatly reduced gas content. Without increasing the cost, the gas-liquid separation capacity of the gas-liquid separator is increased, thereby increasing the suction capacity of the solution pump, so that the solution of the unit is better circulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a gas-liquid separator of the present invention.

[0012] Illustration Description:

[0013] 1. Valve 2. First head

[0014] 3. Shell 4. Protective net

[0015] 5. Inner tube 6. Filler

[0016] 7. Filter assembly 8. Baffle

[0017] 9. Second head 10. Through hole

[0018] 11. Liquid inlet pipe 12. Liquid outlet pipe DETAILED DESCRIPTION

[0019] The technical solutions of specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention rather than to limit the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside" and "outside" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the description of the present invention, it should be noted that “plurality” refers to two or more.

[0023] like Figure 1 As shown, an embodiment of the present invention provides a gas-liquid separator, including an outer shell 3 with closed ends, an inner tube 5, a protective net 4, a filler 6, a filter assembly 7, a liquid inlet pipe 11 and a liquid outlet pipe 12; the inner tube 5 is located inside the outer shell 3, the liquid inlet pipe 11 is located at one end of the outer shell 3, and the liquid inlet pipe 11 passes through one side wall of the outer shell 3, and the liquid outlet pipe 12 is located at the other end of the outer shell 3; the inner tube 5 is connected to the protective net 4 at one end close to the liquid inlet pipe 11, and the protective net 4 extends around the inner wall of the outer shell 3, and the inner tube 5 and the outer shell 3 are connected to the end close to the liquid outlet pipe 12. At least one through hole 10 is provided on the inner wall of the inner tube 5 close to the baffle 8 and located on the opposite side of the liquid outlet pipe 12; a filler 6 is arranged between the inner tube 5 and the outer shell 3, and the filler 6 is located between the protective net 4 and the baffle 8; the filter assembly 7 is arranged inside the end of the inner tube 5 close to the liquid outlet pipe 12, and the filter assembly 7 is connected to the liquid outlet pipe 12; the outer shell 3 is provided with an air outlet at one end close to the liquid inlet pipe 11. Although Figure 1 The gas-liquid separator is shown as being horizontally placed, but it is clear to those skilled in the art that when it is used, it should be in a vertical state with the liquid outlet pipe 12 located at the bottom.

[0024] Furthermore, the housing 3 further comprises a first end cap 2 and a second end cap 9. The first end cap 2 is located at one end of the housing 3 close to the liquid inlet pipe 11, and the second end cap 9 is located at one end of the housing 3 close to the liquid outlet pipe 12. The first end cap 2 and the second end cap 9 make the housing 3 in a sealed state. A valve 1 is also provided at the gas outlet of the housing 3 for discharging the gas separated from the gas and liquid. In this embodiment, the valve 1 is an angle valve.

[0025] Further, the baffle 8 is fixed between the outer shell 3 and the inner tube 5 by welding. At least one through hole 10 is provided on the tube wall of the inner tube 5 near the baffle 8 and located on the opposite side of the liquid outlet pipe 12. In this embodiment, the through holes 10 are 30. The through holes 10 can be circular, arc-shaped, polygonal, etc. In this embodiment, the through holes 10 are circular, and the diameter of the through holes 10 is 4-6 mm. Optionally, the diameter of the through holes 10 is 5 mm. In this embodiment, when there are multiple through holes 10, the through holes 10 can be evenly distributed on the tube wall of the inner tube 5, the through holes 10 can be set to surround the tube wall of the inner tube 5, and the through holes 10 can be set to multiple in the direction perpendicular to the protective net 4. The shape, number, diameter and distribution of the through holes 10 on the tube wall of the inner tube 5 can be changed according to actual needs, and are not specifically limited in this embodiment. Changes in the shape, diameter, number and distribution of the through holes 10 made on the above-described content also belong to the scope of protection of the present invention.

[0026] Furthermore, the protective net 4 is fixed on the inner tube 5. The protective net 4 can be fixed on the inner tube 5 by welding or by bolts. The protective net 4 can include a steel plate mesh with a diamond-shaped mesh, and the mesh size is 3mm×3mm.

[0027] Furthermore, the packing 6 includes Raschig rings or Pall rings, which mainly provide sufficient contact surface between the gas and liquid phases to improve the separation effect of the gas and liquid phases. Generally speaking, the Raschig rings and Pall rings are made of metal, plastic or ceramic, and the Raschig rings or Pall rings can be filled between the inner tube 5 and the outer shell 3 in a regular manner or in a random manner.

[0028] The working process and working principle of the present invention are as follows:

[0029] When the above-mentioned gas-liquid separator is used, first, the ammonia solution enters from the liquid inlet pipe 11, and the solution with less or no gas directly enters the filter mesh assembly 7 of the inner tube 5 through the mesh on the protective mesh 4 on the inner tube 5. After the solution is filtered by the filter mesh assembly 7, it is directly pumped out from the liquid outlet pipe 12 by the solution pump in the unit. The other part of the ammonia solution with more gas content uses the centrifugal force of the solution quickly impacting the outer shell 3 to perform the first-stage gas-liquid separation, remove a small amount of gas, and the gas is directly discharged from the gas outlet on the outer shell 3. Then, the ammonia solution after the first-stage gas-liquid separation is vibrated by the filler 6 to perform the second-stage gas-liquid separation. The solution separated by the filler 6 enters the inner tube 5 through the multiple through holes 10 on the wall of the inner tube 5. After entering the inner tube 5, the solution impacts the wall of the inner tube 5 to perform the third-stage gas-liquid separation. The gas can be discharged through the mesh on the protective mesh 4 on the inner tube 5. Then, the gas is directly discharged through the gas outlet on the outer shell 3. The solution after the third-stage gas-liquid separation is filtered by the filter mesh assembly 7 and discharged from the liquid outlet pipe 12, which is directly pumped out by the solution pump in the unit. Through the above three-stage gas-liquid separation, the solution pumped by the solution pump is entirely liquid or the gas content is greatly reduced, creating better working conditions for the solution pump suction, improving the solution pump's suction capacity, and allowing the unit's solution to circulate better.

[0030] The principle of the first-stage gas-liquid separation and the third-stage gas-liquid separation: The first-stage gas-liquid separation and the third-stage gas-liquid separation are both centrifugal separations. Due to the different densities of gas and liquid, when the gas and liquid mix and impact the outer shell or inner tube, a rotational flow will occur. The centrifugal force of the liquid is greater than the centrifugal force of the gas. Therefore, the liquid tends to be centrifugally separated. The liquid adheres to the outer shell or the wall of the inner tube and is gathered together due to gravity.

[0031] Second-stage gas-liquid separation: The second-stage gas-liquid separation belongs to packing separation. Due to the different densities of gas and liquid, when the gas and liquid are mixed and flow together, if they encounter packing, the gas will bend away, while the liquid continues to have a forward speed due to inertia. The forward-flowing liquid adheres to the surface of the packing and gathers together downward due to gravity.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A gas-liquid separator, characterized in that: The invention comprises an outer shell with closed ends, an inner tube, a protective net, a filler, a filter assembly, a liquid inlet pipe and a liquid outlet pipe; the inner tube is located inside the outer shell, the liquid inlet pipe is located at one end of the outer shell, and the liquid inlet pipe passes through one side wall of the outer shell, and the liquid outlet pipe is located at the other end of the outer shell; the inner tube is connected to the protective net at one end close to the liquid inlet pipe, and the protective net extends around the inner wall of the outer shell, a baffle is connected to one end close to the liquid outlet pipe between the inner tube and the outer shell, and at least one through hole is provided on the inner wall of the inner tube close to the baffle and located on the opposite side of the liquid outlet pipe; the filler is arranged between the inner tube and the outer shell, and the filler is located between the protective net and the baffle; the filter assembly is arranged inside the inner tube at one end close to the liquid outlet pipe, and the filter assembly is connected to the liquid outlet pipe; an air outlet is arranged at one end of the outer shell close to the liquid inlet pipe.

2. A gas-liquid separator according to claim 1, characterized in that: The shell further comprises a first seal and a second seal. The first seal is located at one end of the shell close to the liquid inlet pipe, and the second seal is located at one end of the shell close to the liquid outlet pipe.

3. A gas-liquid separator according to claim 1, characterized in that: A valve is also provided at the air outlet of the shell.

4. A gas-liquid separator according to claim 1, characterized in that: The shortest distance between the through hole and the baffle is 18 mm.

5. A gas-liquid separator according to claim 1, characterized in that: The through hole is circular, arc-shaped or polygonal.

6. A gas-liquid separator according to claim 1, characterized in that: The packing includes Raschig rings or Pall rings.

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