Reciprocating compressor inlet gas-liquid separation structure

Abstract

The utility model discloses a gas-liquid separation structure at an inlet of a reciprocating compressor, which relates to the technical field of air intake of the reciprocating compressor and comprises a separation shell, a gas inlet pipe and an exhaust pipe, the liquid storage shell is detachably connected to the lower side of the separation shell; the large end of the inverted cone cylinder is connected to the inner side of the lower part of the separation shell, and the lower part of the inverted cone cylinder extends into the liquid storage shell; the upper end of the liquid hopper is connected to the inner side of the upper part of the liquid storage shell and forms an annular gap with the outer side of the lower part of the inverted cone; a through hole is formed in the upper part of the side wall of the liquid hopper and corresponds to the middle part of the inverted conical cylinder; through the inverted cone cylinder and the liquid hopper with the gap, falling and storage of liquid are not affected, the liquid is prevented from being completely discharged during liquid discharging, liquid sealing is achieved, external air is isolated, potential safety hazards caused by mixing of internal gas and external gas are avoided, shutdown for liquid discharging is not needed, and normal and continuous work of the reciprocating compressor is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to reciprocating compressor intake technology field especially relates to reciprocating compressor entrance gas liquid separation structure. BACKGROUND

[0002] In the reciprocating compressor, gas liquid separation is a vital link. Because liquid into the compressor cylinder can cause many serious problems. For example, liquid can cause the lubrication condition between the piston and the cylinder to deteriorate, increase the friction, accelerate the wear of parts; It can also cause liquid hammer phenomenon, when the incompressible characteristics of liquid are manifested in the compression chamber of the compressor, a huge impact force is generated, which can cause serious damage to the valve, piston, connecting rod and other parts of the compressor, and even can cause the compressor failure, shorten its service life.

[0003] It is a common practice to set a gas-liquid separator on the compressor intake pipeline. Because gas can produce condensate due to temperature changes during pipeline transportation, the nature of the gas itself, etc. For example, the utility model patent of a reciprocating compressor inlet gas-liquid separation device with the publication number CN209261766U. The gas-liquid separator generally works by using the principles of gravity settling, centrifugal force separation, etc. For example, by enlarging the diameter of the pipeline to reduce the flow rate of the gas, using gravity to let the liquid settle at the bottom of the separator, and then periodically discharging through the liquid discharge port. The liquid discharge needs to be discharged through the liquid discharge valve by opening it regularly. The safest way before opening the valve to discharge liquid is to stop the reciprocating compressor first, because the stored liquid falls quickly and is discharged. If the reciprocating compressor is in working condition, external air will be introduced from the liquid discharge port and mixed with the gas-liquid separator intake gas, which has great safety hazards. UTILITY MODEL CONTENT

[0004] The utility model discloses a reciprocating compressor inlet gas-liquid separation structure.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The reciprocating compressor inlet gas-liquid separation structure comprises:

[0007] The separation shell is connected with the air inlet pipe and the air outlet pipe at the upper part;

[0008] The liquid storage shell is detachably connected to the lower side of the separation shell;

[0009] The inverted cone cylinder is connected to the inner side of the lower part of the separation shell, and the lower part extends into the liquid storage shell;

[0010] The liquid bucket is connected to the inner side of the upper part of the liquid storage shell, and forms an annular gap with the outer side of the lower part of the inverted cone cylinder;

[0011] The upper part of the liquid hopper side wall is provided with a through hole corresponding to the middle part of the inverted cone cylinder.

[0012] Further, the separation shell is a cylindrical shell with an opening at the lower side; the liquid storage shell is a cylindrical shell with an opening at the upper side; the separation shell and the liquid storage shell are connected through flanges.

[0013] Further, the liquid storage shell is connected with a liquid discharge pipe at the lower side, and a valve is installed on the liquid discharge pipe.

[0014] Further, the through hole is provided with a plurality of same heights and is circumferentially distributed.

[0015] Further, the liquid storage shell is connected with an L-shaped air guide pipe at one side of the upper part.

[0016] Further, the air discharge pipe is connected to the middle part of the upper side of the separation shell, and the air discharge pipe is connected to the inlet of the reciprocating compressor.

[0017] Further, the separation shell is provided with a flow guide cylinder at the lower side of the middle part of the upper wall, and the air discharge pipe corresponds to the center of the flow guide cylinder.

[0018] Further, the flow guide cylinder is provided with a cyclone plate.

[0019] Further, the liquid hopper is connected with a stand at the center of the lower wall, and the cyclone plate is provided with a plurality of layers and is connected to the upper end of the stand.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The utility model discloses a reciprocating compressor with a gap inverted cone cylinder and liquid hopper, which does not affect the liquid storage, avoids the liquid from being discharged completely, realizes liquid sealing isolation of external air, avoids the safety hidden trouble caused by the mixture of internal and external air, does not need to stop machine and discharge liquid, and guarantees the normal continuous work of the reciprocating compressor. DRAWINGS

[0022] Fig. 1 It is the internal structure schematic diagram of the utility model.

[0023] Fig. 2 It is the structure schematic diagram of the utility model.

[0024] Fig. 3 It is the external structure schematic diagram of the utility model.

[0025] In the drawing: 1, separation shell, 2, liquid storage shell, 3, air inlet pipe, 4, air discharge pipe, 5, inverted cone cylinder, 6, liquid hopper, 7, through hole, 8, liquid discharge pipe, 9, valve, 10, flow guide cylinder, 11, cyclone plate, 12, stand, 13, air guide pipe. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described examples are only a part of the examples of the utility model, but not all the examples. The components of the utility model embodiments described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] In the description of the utility model, unless explicitly defined and limited, the terms "mounting", "connection" and "connection" that may appear should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the description of the utility model, it should be noted that, unless explicitly defined and limited, the term "provided with" that may appear should be understood broadly, for example, the object of "provided with" can be part of the body, or it can be arranged separately from the body and connected to the body, and the connection can be detachable or non-detachable. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] The utility model will be further described in detail below in combination with examples.

[0030] The specific embodiments of the reciprocating compressor inlet gas-liquid separation structure provided by the utility model are as follows:

[0031] Please refer to Figs. 1-3 , the reciprocating compressor inlet gas-liquid separation structure comprises a separation shell 1, a liquid storage shell 2, an inverted cone 5 and a liquid bucket 6.

[0032] The liquid storage shell 2 is detachably connected to the lower side of the separation shell 1; specifically, the separation shell 1 is a cylindrical shell with an opening on the lower side; the liquid storage shell 2 is a cylindrical shell with an opening on the upper side; the separation shell 1 and the liquid storage shell 2 are detachably connected through flanges and bolts.

[0033] The separation shell 1 is connected with an air inlet pipe 3 and an exhaust pipe 4 on the upper part; the air inlet pipe 3 is horizontally arranged and communicates with the inside of the separation shell 1 in the tangential direction of the separation shell 1; the exhaust pipe 4 is vertically arranged and connected to the middle part of the upper side of the separation shell 1, and the exhaust pipe 4 is connected with the inlet of the reciprocating compressor. The outer side of the end part of the air inlet pipe 3 and the exhaust pipe 4 is provided with external threads for connecting with external air pipes.

[0034] The lower side of the middle part of the upper wall of the separation shell 1 is provided with a flow guide cylinder 10, and the exhaust pipe 4 corresponds to the center of the flow guide cylinder 10; the inner diameter of the exhaust pipe 4 is smaller than the inner diameter of the flow guide cylinder 10; the vertical span of the flow guide cylinder 10 corresponds to the upper middle part of the separation shell 1.

[0035] The gas of the external air pipe is introduced into the separation shell 1 from the air inlet pipe 3, the gas flow rate is reduced by the way of expanding the inner diameter of the pipeline, and the liquid is settled downward under the action of gravity; the gas enters between the separation shell 1 and the flow guide cylinder 10 in a tangent direction, spirally moves downward, and the centrifugal force generated by the spiral downward movement of the gas makes the liquid adhere to the inner wall of the separation shell 1 and fall; then the gas enters the flow guide cylinder 10 from the lower end of the flow guide cylinder 10 and then moves upward to the exhaust pipe 4, and enters the reciprocating compressor inlet through the exhaust pipe 4.

[0036] The liquid falls into the liquid storage shell 2, and the lower side of the liquid storage shell 2 is connected with a liquid discharge pipe 8, and the valve 9 is installed on the liquid discharge pipe 8; opening the valve 9 can discharge the liquid.

[0037] In order to avoid that the external air enters the separation shell 1 and mixes with the gas introduced by the air inlet pipe 3 when discharging the liquid, in the embodiment, the large end of the inverted cone cylinder 5 is sealingly connected to the inner side of the lower part of the separation shell 1, and the lower part of the inverted cone cylinder 5 extends into the liquid storage shell 2; the upper end of the liquid bucket 6 is sealingly connected to the inner side of the upper part of the liquid storage shell 2, and the liquid bucket 6 and the lower part of the inverted cone cylinder 5 form a conical annular gap; the lower side of the inverted cone cylinder 5 has an opening and a gap with the lower wall of the liquid bucket 6, and the lower side of the liquid bucket 6 is closed; in this way, the liquid falling in the separation shell 1 is first gathered through the inverted cone cylinder 5 and collected in the liquid bucket 6.

[0038] The upper part of the side wall of the liquid bucket 6 is provided with a through hole 7 corresponding to the middle part of the inverted cone cylinder 5; the through hole 7 is provided with a plurality of through holes with the same height and is circumferentially distributed. The liquid in the liquid bucket 6 rises with the accumulation of the liquid level, and fills in the annular gap between the inverted cone cylinder 5 and the liquid bucket 6; when the liquid level rises to the through hole 7, it overflows through the through hole 7 and falls into the liquid storage shell 2 for storage.

[0039] The liquid between the inverted cone cylinder 5 and the liquid bucket 6 separates the gas of the separation shell 1 and the liquid storage shell 2, realizes gas separation and isolation, avoids the mixing of the gas in the separation shell 1 and the air in the liquid storage shell 2, and further avoids the introduction of external air into the reciprocating compressor.

[0040] The upper part of the liquid storage shell 2 is connected with an L-shaped air guide pipe 13 on one side, the lower end of the air guide pipe 13 communicates with the inside of the liquid storage shell 2, which is convenient for air to enter and exit, adapts to the change of the liquid amount and air amount in the liquid storage shell 2, and ensures that the liquid storage shell 2 can normally store liquid and exhaust air.

[0041] The air guide pipe 13 is not lower than the through hole; the air guide pipe 13 is a transparent pipe, when the liquid 7 reaches the air guide pipe 13, the liquid in the liquid storage shell 2 is discharged. The valve 9 is opened, the liquid in the liquid storage shell 2 falls from the liquid discharge pipe 8, and is quickly discharged in whole, but the liquid in the liquid cup 6 under the through hole 7 cannot be discharged, the liquid is left in the liquid cup 6 to separate and seal the separation shell 1 and the liquid storage shell 2, therefore, the external air cannot enter the separation shell 1, and the reciprocating compressor does not need to be closed during the liquid discharge. After the liquid is discharged, the valve 9 is closed.

[0042] The flow guide cylinder 10 has a cyclone plate 11, and the liquid cup 6 is connected with a stand 12 on the upper side of the center of the lower wall; the cyclone plate 11 is provided with several layers and is connected with the upper end of the stand 12. The outer edge of the cyclone plate 11 has a small gap with the inner wall of the flow guide cylinder 10; the cyclone plate 11 makes the gas rising in the flow guide cylinder 10 tilt and centrifugally rotate, and further promotes the gas-liquid separation. The cyclone plate 11 can pass through the lower opening of the inverted cone cylinder 5, when the flange bolts are removed, the liquid storage shell 2 is lowered, the cyclone plate 11 is lowered with the stand 12 and the liquid cup 6, and can be separated from the separation shell 1 and the flow guide cylinder 10.

[0043] Finally, it needs to be explained that the above only for the preferred embodiments of the present application, and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for the person skilled in the art, the technical solution recorded in the foregoing embodiments can be modified without paying creative labor, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A reciprocating compressor inlet gas-liquid separation structure, characterized in that, The utility model relates to a kind of air separation device, including: Separation shell (1), upper portion is connected with air inlet pipe (3) and exhaust pipe (4); Liquid storage shell (2) is detachably connected to the lower side of the separation shell (1); Inverted cone (5), large end is connected to the inner side of the lower portion of the separation shell (1), and the lower portion extends into the liquid storage shell (2); Liquid bucket (6), upper end is connected to the inner side of the upper portion of the liquid storage shell (2), and annular gap is formed with the lower portion of the inverted cone (5) outside; The upper portion of the side wall of the liquid bucket (6) is provided with through hole (7), and the through hole (7) corresponds to the middle portion of the inverted cone (5).

2. The reciprocating compressor inlet gas-liquid separation structure according to claim 1, characterized by, The separation shell (1) is a cylindrical shell with an opening on the lower side; the liquid storage shell (2) is a cylindrical shell with an opening on the upper side; the separation shell (1) and the liquid storage shell (2) are connected by flange.

3. The reciprocating compressor inlet gas-liquid separation structure according to claim 1 or 2, characterized by, The lower side of the liquid storage shell (2) is connected with liquid discharge pipe (8), and valve (9) is installed on the liquid discharge pipe (8).

4. The reciprocating compressor inlet gas-liquid separation structure according to claim 1, characterized by, The through hole (7) is provided with several same heights and is circumferentially distributed.

5. The reciprocating compressor inlet gas-liquid separation structure according to claim 1, characterized by, The upper portion of one side of the liquid storage shell (2) is connected with L-shaped air guide pipe (13).

6. The reciprocating compressor inlet gas-liquid separation structure of claim 1, wherein The exhaust pipe (4) is connected to the middle portion of the upper side of the separation shell (1), and the exhaust pipe (4) is connected with the inlet of reciprocating compressor.

7. The reciprocating compressor inlet gas-liquid separation structure according to claim 6, characterized by, The upper wall of the separation shell (1) is provided with flow guide cylinder (10) on the lower side of the middle portion, and the exhaust pipe (4) corresponds to the center of the flow guide cylinder (10).

8. The reciprocating compressor inlet gas-liquid separation structure according to claim 7, characterized by, The flow guide cylinder (10) has cyclone plate (11) inside.

9. The reciprocating compressor inlet gas-liquid separation structure according to claim 8, characterized by, The lower wall of the liquid bucket (6) is connected with stand (12) on the upper side of the center, and the cyclone plate (11) is provided with several layers and is connected to the upper end of the stand (12).

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