Gas collecting tank and compressor unit

Abstract

The utility model relates to the technical field of compressors, in particular to a gas collection tank and a compressor unit, the gas collection tank comprises a tank body and a gas-liquid separation assembly, the tank body is provided with a cavity, a gas inlet pipe and a gas outlet, the gas inlet pipe and the gas outlet communicate with the cavity, and the gas outlet is used for communicating with the gas inlet end of a compressor; the gas-liquid separation assembly is arranged in the gas inlet pipe and used for separating liquid in gas flow entering the gas inlet pipe, the gas collecting tank can make the flow speed of gas entering the gas suction end of the compressor uniform, meanwhile, the gas collecting tank has the gas-liquid separation function, the unit structure is simplified, and cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of compressors, and particularly to a gas collecting tank and a compressor unit. Background Art

[0002] For a parallel screw compressor unit, in order to make the gas flow velocity uniform at the suction end of each compressor, a gas collecting tank is usually provided in front of the suction end of the compressor. The gas first enters the gas collecting tank, and the gas flow velocity decreases from high speed, and the gas collecting tank is filled at a relatively gentle speed, and then conveyed to the suction end of each compressor. During the suction process of the compressor unit, when the suction superheat is low, for example, in the case of a row pipe library or poor heat exchange at the end, the compressor may start with liquid, and a gas-liquid separator needs to be installed to prevent the compressor from starting with liquid. The gas-liquid separator and the gas collecting tank are two independent structures, which makes the unit structure complex and increases the cost. Utility Model Content

[0003] The purpose of this application is to provide a gas collecting tank and a compressor unit. This gas collecting tank can not only make the gas flow velocity uniform at the suction end of the compressor, but also has the function of gas-liquid separation, simplifies the unit structure, and reduces the cost.

[0004] To this end, in the first aspect, an embodiment of this application provides a gas collecting tank, including: a tank body having a cavity, an inlet pipe and an outlet communicating with the cavity, and the outlet is used to communicate with the intake end of the compressor; and a gas-liquid separation component disposed in the inlet pipe for separating the liquid in the airflow entering the inlet pipe.

[0005] In a possible implementation manner, the gas-liquid separation component includes an intake air vane rotatably disposed in the inlet pipe, and the intake air vane rotates under the action of the airflow flowing through the inlet pipe, so that the liquid in the airflow adheres to the surface of the intake air vane.

[0006] In a possible implementation manner, there is a gap between the end of the intake air vane far from the rotation center and the inner wall of the inlet pipe, so that the liquid on the surface of the intake air vane is thrown onto the inner wall of the inlet pipe under the action of centrifugal force.

[0007] In a possible implementation manner, the gap a between the end of the intake air vane far from the rotation center and the inner wall of the inlet pipe satisfies the following relationship: 2 mm < a < 10 mm.

[0008] In a possible implementation manner, the intake air vane is coaxially arranged with the inlet pipe.

[0009] In a possible implementation manner, the end of the inlet pipe communicating with the cavity is inclined towards the bottom of the tank body.

[0010] In a possible implementation manner, there are multiple outlets, and the multiple outlets are respectively used to communicate with the intake ends of multiple compressors.

[0011] In a possible implementation, the tank body further includes an outlet pipe disposed at the air outlet, one end of the outlet pipe extends into the tank body, and the other end is used to communicate with the intake end of the compressor.

[0012] In a possible implementation, the outlet pipe is arranged in the vertical direction.

[0013] In a second aspect, an embodiment of the present application provides a compressor unit, including: a compressor; and the above-mentioned gas collecting tank, and the air outlet of the gas collecting tank communicates with the intake end of the compressor.

[0014] According to the gas collecting tank and the compressor unit provided by the embodiments of the present application, the gas collecting tank slows down and reduces the speed of the airflow entering through the inlet pipe, and then transports it to the compressor through the air outlet, so that the gas can flow to the compressor evenly. The gas-liquid separation component at the inlet pipe can separate the liquid in the airflow flowing through the inlet pipe, thereby avoiding the situation of liquid-carrying gas entering the compressor. It can not only make the gas flow rate uniform at the intake end of the compressor, but also has the function of gas-liquid separation, simplifies the structure of the unit, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] One or more embodiments are illustrated by way of example in the accompanying drawings, and these exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0018] Figure 1 A schematic structural diagram of a gas collecting tank provided by an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of the internal airflow direction of a gas collecting tank provided by an embodiment of the present application is shown;

[0020] Figure 3 A schematic structural diagram of another angle of a gas collecting tank provided by an embodiment of the present application is shown;

[0021] Figure 4Shows a schematic plan view of a gas-liquid separation component and an intake pipe provided by an embodiment of the present application;

[0022] Figure 5 Shows a schematic plan view of an intake air blade and an intake pipe provided by an embodiment of the present application;

[0023] Figure 6 Shows Figure 5 The enlarged partial structure schematic diagram at location A of;

[0024] Figure 7 Shows another schematic plan view of a gas-liquid separation component and an intake pipe provided by an embodiment of the present application;

[0025] Figure 8 Shows a schematic top view of a gas collecting tank provided by an embodiment of the present application.

[0026] Explanation of reference numerals:

[0027] 1. Tank body; 11. Cavity; 12. Intake pipe; 13. Outlet pipe; 131. Bevel structure;

[0028] 2. Gas-liquid separation component; 21. Intake air blade. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. To simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present application. In addition, the embodiments of the present application may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] For ease of description, relative spatial relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such relative spatial relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will also change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will then be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the relative spatial relationship descriptors used in the text are interpreted accordingly.

[0032] To solve the problems in the prior art, the present application provides a gas collecting tank and a compressor unit. This gas collecting tank can not only make the gas flow rate uniform at the suction end of the compressor, but also has the function of gas-liquid separation, simplifies the unit structure, and reduces costs.

[0033] Figure 1 Shows a schematic structural diagram of a gas collecting tank provided by an embodiment of the present application; Figure 2 Shows a schematic diagram of the air flow direction inside a gas collecting tank provided by an embodiment of the present application; Figure 3 Shows a schematic structural diagram of a gas collecting tank from another angle provided by an embodiment of the present application; Figure 4 Shows a schematic plan view of a gas-liquid separation component and an intake pipe provided by an embodiment of the present application; Figure 5 Shows a schematic plan view of an intake air vane and an intake pipe provided by an embodiment of the present application;

[0034] Figure 6 Shows Figure 5 A partial enlarged structural schematic diagram of the A position; Figure 7 Shows another schematic plan view of a gas-liquid separation component and an intake pipe provided by an embodiment of the present application; Figure 8 Shows a schematic top view of a gas collecting tank provided by an embodiment of the present application.

[0035] As Figures 1-8 Shown, an embodiment of the present application provides a gas collecting tank, including: a tank body 1 and a gas-liquid separation component 2.

[0036] The tank body 1 has a cavity 11, an intake pipe 12 communicating with the cavity 11, and an air outlet for communicating with the intake end of the compressor.

[0037] The gas-liquid separation component 2 is arranged in the intake pipe 12 and is used to separate the liquid in the air flow entering the intake pipe 12.

[0038] In this application, the air flow entering the tank body 1 through the intake pipe 12 is slowed down gently, and then is transported to the compressor through the air outlet, so that the gas can flow to the compressor evenly. The gas-liquid separation component 2 at the intake pipe 12 can separate the liquid in the air flow flowing through the intake pipe 12, thus avoiding the situation that the gas entering the compressor carries liquid. This can not only make the gas flow rate uniform at the suction end of the compressor, but also has the function of gas-liquid separation, simplifies the unit structure and reduces the cost.

[0039] In the related art, when the suction superheat of the compressor unit is relatively low, the entering gas will carry refrigerant, and the refrigerant directly entering the compressor with the gas will cause the compressor to carry liquid. The existing method is to set up a special gas-liquid separator to separate the liquid in the air flow. The gas collecting tank and the gas-liquid separator are arranged independently of each other, with a complex structure, occupying a large space and increasing the cost.

[0040] In the embodiment of this application, by arranging the gas-liquid separation component 2 on the intake pipe 12 of the tank body 1, it can be ensured that the air flow entering the tank body 1 will pass through the gas-liquid separation component 2, thereby ensuring the full separation of the liquid in the air flow, and there is no need to set up a separate gas-liquid separator, thus improving the space utilization rate and reducing the cost.

[0041] Such as Figure 7 shown, optionally, the gas-liquid separation component 2 can be a filter screen. The filter screen is perpendicular to the extension direction of the intake pipe 12. When the air flow flowing through the intake pipe 12 passes through the filter screen, the liquid in the air flow is captured by the filter screen, thereby realizing the separation of gas and liquid. Specifically, the number of filter screens can be multiple, and the multiple filter screens are arranged at intervals along the extension direction of the intake pipe 12 to further improve the separation effect of the liquid in the air flow through the multiple filter screens.

[0042] In a specific embodiment, the gas-liquid separation component 2 includes an intake air blade 21 rotatably arranged in the intake pipe 12. The intake air blade 21 rotates under the action of the air flow flowing through the intake pipe 12, so that the liquid in the air flow adheres to the surface of the intake air blade 21.

[0043] In this application, by arranging an intake air blade 21 in the intake pipe 12, when the air flow passes through the intake air blade 21, it drives the intake air blade 21 to rotate. The rapidly rotating intake air blade 21 forms a structure similar to a baffle. When there is liquid in the air flow, the liquid will contact and adhere to the rotating intake air blade 21, thereby realizing the separation of the liquid in the air flow. It can reduce the resistance to the air flow, ensure the smooth entry of the air flow into the tank body 1, the structure is simpler, there is no need to set a dedicated driving force, and it can realize gas-liquid separation without affecting the normal entry of the air flow into the tank body 1.

[0044] In this application, there is one intake pipe 12 arranged, as Figure 8 shown. In order to further improve the gas-liquid separation effect of the air flow, multiple intake pipes 12 can also be arranged. The multiple intake pipes 12 are arranged at intervals along the extending direction of the tank body 1. An intake air blade 21 is arranged in each intake pipe 12, which can evenly divide the air flow speed entering the tank body 1. By reducing the speed, the effective contact time and effective contact area between the intake air blade 21 and the air flow are further increased, so as to still ensure the gas-liquid separation effect of the air flow when the air flow speed is relatively fast. At the same time, by arranging multiple intake pipes 12 arranged at intervals, the gas can enter the tank body 1 from different positions, which is beneficial to the uniform distribution of the air flow in the tank body 1, so as to evenly transport the gas to the compressor.

[0045] In another alternative embodiment, the gas-liquid separation component 2 includes an intake air blade 21 and a filter screen arranged at intervals. The air flow first contacts the filter screen, and the liquid in the air flow is preliminarily separated through the filter screen. Then the air flow passes through the intake air blade 21, and the liquid in the air flow is separated again through the intake air blade 21, thereby improving the separation effect of the liquid in the air flow. It is also possible that the air flow first passes through the intake air blade 21, the liquid in the air flow is preliminarily separated through the intake air blade 21, and then the air flow passes through the filter screen, and the liquid in the air flow is further separated through the filter screen, thereby improving the separation effect of the liquid in the air flow. Specifically, the number of the intake air blade 21 and the filter screen can be selected according to the air flow speed to ensure the separation effect of the liquid in the air flow under the condition of the minimum wind resistance.

[0046] As Figure 5 shown, in some embodiments, there is a gap between the end of the intake air blade 21 far from the rotation center and the inner wall of the intake pipe 12, so that the liquid on the surface of the intake air blade 21 is thrown onto the inner wall of the intake pipe 12 under the action of centrifugal force.

[0047] In this application, by setting a gap between the intake air blade 21 and the inner wall of the intake pipe 12, it can not only ensure that the rotating intake air blade 21 can fully cover the entire intake pipe 12 to separate the liquid in the air flow passing through the intake pipe 12, but also utilize the centrifugal force during rotation to throw the liquid attached to the surface of the intake air blade onto the inner wall of the intake pipe 12. The liquid converges on the pipe wall of the intake pipe 12 and flows into the tank body 1 under the action of its own gravity and wind force.

[0048] Specifically, the intake pipe 12 is a circular pipe, and the gas-liquid separation component 2 further includes a bracket disposed in the intake pipe 12. The intake air blade 21 is rotatably disposed on the bracket. The intake air blade 21 is disposed adjacent to the cavity 11 in the intake pipe 12, which is convenient for the installation and fixation of the intake air blade 21 on the one hand and for the separated liquid to flow into the tank body 1 on the other hand.

[0049] Furthermore, the gap a between the end of the intake air blade 21 far from the rotation center and the inner wall of the intake pipe 12 satisfies the following relationship: 2 mm < a < 10 mm.

[0050] In this application, by setting the gap a between the intake air blade 21 and the inner wall of the intake pipe 12 between 2 mm and 10 mm, it can ensure that the intake air blade 21 fully covers the intake pipe 12, and the liquid thrown out from the intake air blade 21 can impact on the inner wall of the intake pipe 12 and then flow along the inner wall of the intake pipe 12 to the bottom of the intake pipe 12 and enter the tank body 1 with the wind force. It can prevent some air flows from directly entering the tank body 1 through the gap due to the excessive gap between the intake air blade 21 and the inner wall of the intake pipe 12, and can ensure that the intake air blade 21 can rotate normally under the action of the air flow. Even when there is a large amount of liquid in the air flow, forming a liquid flow at the bottom of the intake pipe 12, it can also ensure that there is a gap between the intake air blade 21 and the liquid flow, without affecting the normal rotation of the intake air blade 21 and without bringing up the liquid flow at the bottom of the intake pipe 12 to mix the liquid into the air flow again.

[0051] In some embodiments, the intake air blade 21 and the intake pipe 12 are coaxially arranged.

[0052] In this application, by coaxially arranging the intake air blade 21 and the intake pipe 12, the gap between the distal end of the intake air blade 21 and the inner wall of the intake pipe 12 remains unchanged during rotation, so that the air flow can uniformly enter the tank body 1 through the intake air blade 21, avoiding the situation that the air flow distribution in the intake pipe 12 is uneven and affecting the gas-liquid separation effect.

[0053] Specifically, the number of the intake air blades 21 is more than 3. By arranging a plurality of intake air blades 21, a structure similar to a baffle can be formed during rotation, thereby increasing the contact area with the air flow, enabling the liquid in the air flow to be fully captured by the intake air blades 21, and realizing gas-liquid separation.

[0054] In a preferred embodiment, the number of intake air blades 21 is four.

[0055] In some embodiments, one end of the intake pipe 12 communicating with the cavity 11 is inclined towards the bottom of the tank body 1.

[0056] In this application, by inclining one end of the intake pipe 12 communicating with the cavity 11 towards the bottom of the tank body 1, it is convenient for the liquid in the intake pipe 12 to flow into the tank body 1 in time, avoiding liquid accumulation in the intake pipe 12 and affecting the air flow transportation.

[0057] Optionally, the intake pipe 12 can also be horizontally arranged, relying on the wind force in the intake pipe 12 to blow the gas in the intake pipe 12, so that the liquid enters the tank body 1.

[0058] In another alternative embodiment, a diversion groove is arranged along the extending direction at the bottom of the inner wall of the intake pipe 12. One end of the diversion groove communicates with the cavity, so that the liquid flowing into the diversion groove can flow into the tank body 1, and the other end is designed to be closed. The intake air blades 21 are located between the two ends of the diversion groove, facilitating the liquid thrown out by the intake air blades 21 to flow into the diversion groove. Specifically, the cross-section of the diversion groove is arc-shaped and smoothly transitions with the inner surface of the intake pipe 12, facilitating the liquid in the intake pipe 12 to flow into the diversion groove.

[0059] In some embodiments, there are multiple air outlets, and the multiple air outlets are respectively used to communicate with the intake ends of multiple compressors.

[0060] In this application, by providing multiple air outlets, and the multiple air outlets are respectively connected to the intake ends of multiple compressors, the gas with a stable reduced speed in the tank body 1 can flow evenly to each compressor, ensuring that the gas flow rate entering each compressor is uniform and stable, thereby ensuring the stability of the compressor operation.

[0061] In some embodiments, the tank body 1 further includes an outlet pipe 13 arranged at the air outlet. One end of the outlet pipe 13 extends into the tank body 1, and the other end is used to communicate with the intake end of the compressor.

[0062] In this application, by providing the outlet pipe 13 at the air outlet, the gas in the tank body 1 is connected to the intake end of the compressor through the outlet pipe 13, and the end of the outlet pipe 13 extends into the tank body 1, so that a small amount of liquid that is not separated at the intake air blades 21 will not be directly discharged after entering the tank body 1, but will fall to the bottom of the tank body 1 under its own gravity and converge with the liquid entering the tank body 1 from the intake pipe 12. If the gas in the tank body 1 wants to be discharged through the outlet pipe 13, it needs to enter the outlet pipe 13 from the bottom of the outlet pipe 13, avoiding the situation that the gas entering the tank body 1 is directly discharged from the air outlet and the unseparated liquid in the gas enters the compressor, which can further improve the gas-liquid separation effect.

[0063] In some embodiments, the air outlet pipe 13 is arranged in the vertical direction.

[0064] As Figure 2 shown, in the present application, by arranging the air outlet pipe 13 in the vertical direction, the air flow direction entering the tank body 1 is not in the vertical direction. Therefore, the air flow needs to reduce its speed and be evenly distributed before entering the air outlet pipe 13, that is, the air flow needs to circulate in the tank body 1 for several circles and stabilize before entering the air outlet pipe 13 under the action of the pressure difference. During the process of the air flow circulating in the tank body 1, it contacts the inner wall of the tank body 1 and the outer wall of the air outlet pipe 13, realizing the secondary separation of gas and liquid. Moreover, the gas entering the air outlet pipe 13 contacts the inner wall of the air outlet pipe 13, and the liquid in the air flow will also adhere to the inner wall of the air outlet pipe 13 and flow back into the tank body 1 under its own gravity.

[0065] As Figures 1-3 shown, specifically, a bevel structure 131 is provided at the bottom of the air outlet pipe 13. Through the bevel structure 131, it is convenient for the liquid converged in the air outlet pipe 13 to form water droplets and drip into the tank body 1 from the lowest part of the bevel structure 131, playing a role in draining the liquid in the air outlet pipe 13 and avoiding the situation that the liquid drips from multiple places and affects the entry of gas into the air outlet pipe 13.

[0066] Specifically, the bevel structure 131 at the bottom of the air outlet pipe 13 is arranged facing away from the air inlet pipe 12, which can further avoid the situation that the gas entering the tank body 1 from the air inlet pipe 12 directly enters the air outlet pipe 13, thereby further separating gas and liquid from the gas entering the tank body 1.

[0067] In another alternative embodiment, the air outlet pipe 13 can also be designed at an angle with the vertical direction. The above angle is an acute angle, and only the air outlet needs to be arranged at the top of the tank body to facilitate the liquid in the air outlet pipe 13 to return to the tank body 1 under its own gravity.

[0068] In a specific embodiment, the length of the air outlet pipe 13 located in the cavity 11 is greater than or equal to the radius of the cavity, so as to facilitate the air flow rotating in the cavity to enter the air outlet pipe 13. The length of the air outlet pipe 13 located in the cavity 11 is less than three-quarters of the radius of the cavity 11, which can effectively prevent the liquid at the bottom of the cavity 11 from submerging the bottom of the air outlet pipe 13.

[0069] A drain pipe (not shown) is provided at the bottom of the tank body 1 in the present application, and the liquid at the bottom of the tank body 1 can be discharged through the drain pipe to avoid the accumulation of liquid in the tank body 1.

[0070] The gas collecting tank slows down and moderates the airflow entering through the air inlet pipe 12, and then conveys it to the compressor through the air outlet, enabling the gas to flow evenly towards the compressor. The gas-liquid separation component 2 at the air inlet pipe 12 can separate the liquid in the airflow flowing through the air inlet pipe 12, thus avoiding the situation of liquid-carrying gas entering the compressor. This not only makes the gas flow rate uniform at the suction end of the compressor, but also has the function of gas-liquid separation, simplifies the unit structure, and reduces costs.

[0071] An embodiment of the present application provides a compressor unit, including: a compressor; and the above-mentioned gas collecting tank, where the air outlet of the gas collecting tank is communicated with the air inlet end of the compressor.

[0072] In the present application, multiple compressors can be provided to form a parallel screw compressor unit. By using the gas collecting tank in the present application, the uniform distribution of the airflow and the function of gas-liquid separation can be solved simultaneously, making the structure of the unit simpler, effectively improving the space utilization rate of the unit, and reducing costs.

[0073] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be restrictive. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used in the text may also include the plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or their combinations. The method steps, processes, and operations described in the text are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0074] Although the terms first, second, third, etc. may be used in the text to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms do not imply an order or sequence when used in the text. Therefore, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0075] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A gas collecting tank, characterized in that, Comprising: A tank body (1) having a cavity (11), an intake pipe (12) communicating with the cavity (11), and an air outlet for communicating with the intake end of a compressor; And A gas-liquid separation assembly (2) disposed in the intake pipe (12) for separating liquid in the air flow entering the intake pipe (12).

2. The air collecting tank according to claim 1, characterized in that, The gas-liquid separation assembly (2) includes an intake air vane (21) rotatably disposed in the intake pipe (12), and the intake air vane (21) rotates under the action of the air flow flowing through the intake pipe (12) so that the liquid in the air flow adheres to the surface of the intake air vane (21).

3. The air collecting tank according to claim 2, characterized in that, A gap is left between one end of the intake air vane (21) away from the rotation center and the inner wall of the intake pipe (12) so that the liquid on the surface of the intake air vane (21) is thrown onto the inner wall of the intake pipe (12) under the action of centrifugal force.

4. The gas collecting tank according to claim 3, characterized in that, The gap a between one end of the intake air vane (21) away from the rotation center and the inner wall of the intake pipe (12) satisfies the following relationship: 2mm < a < 10mm.

5. The gas collecting tank according to claim 2, characterized in that, The intake air vane (21) is coaxially arranged with the intake pipe (12).

6. The gas collecting tank according to claim 2, wherein, The end of the intake pipe (12) communicating with the cavity (11) is inclined towards the bottom of the tank body (1).

7. The gas collecting tank according to claim 1, wherein, There are a plurality of air outlets, and the plurality of air outlets are respectively used for communicating with the intake ends of a plurality of compressors.

8. The gas collecting tank according to claim 1, characterized in that, The tank body (1) further includes an outlet pipe (13) disposed at the air outlet, one end of the outlet pipe (13) extends into the tank body (1), and the other end is used for communicating with the intake end of the compressor.

9. The air collecting tank according to claim 8, wherein, The outlet pipe (13) is arranged in the vertical direction.

10. A compressor unit, characterized in that, Comprising: A compressor; And The gas collecting tank according to any one of claims 1-9, wherein the air outlet of the gas collecting tank communicates with the intake end of the compressor.

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