Wet type compressed air storage buffer tank with gas-liquid separation function

Abstract

The utility model provides a wet-type compressed air storage buffer tank with gas-liquid separation, which comprises a tank body, a first liquid outlet is arranged at the bottom end of the tank body, an air inlet pipe and an exhaust pipe are arranged at the top of the side wall of the tank body, the air inlet pipe is tightly connected with the tank body and extends to the middle lower part in the tank body, the outlet of the air inlet pipe is vertically downward, and the exhaust pipe is tightly connected with the tank body. The middle part of the inner wall of the tank body is provided with a circle of air inducing plates which are obliquely arranged upwards and form a liquid storage space with a certain included angle with the inner wall of the tank body, and the middle part of the outer side wall of the tank body is provided with a second liquid outlet communicated with the liquid storage space; a foam supplementing net located below the exhaust pipe is arranged at the bottom of the inner wall of the tank body, and the first liquid outlet is located below the foam supplementing net. According to the embodiment of the invention, the air storage buffer function is achieved, oil and condensed water in compressed air can be separated step by step, the separation efficiency is improved, meanwhile, the pressure loss is not increased, and the condensed water and the oil in the compressed air discharged by the air machine are effectively treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor technology field, concretely is a kind of wet type compressed air storage buffer tank with gas-liquid separation. BACKGROUND

[0002] Compressed air, as the important power energy in modern industry next to electric energy, is widely used in chemical industry, textile, ship and many other industrial production fields due to its characteristics of clean, non-polluting, safe and easy to transport, and is an indispensable important part in industrial production process. At the same time, the compressed air supply system composed of air compressor, air storage tank, filter and post-processing cold dryer or suction dryer also consumes 9.5% to 10% of the total power consumption of the country. Under the background of increasingly prominent energy and environmental problems and national double carbon strategy, energy saving reform of compressed air system is imperative.

[0003] At present, oil-injected twin-screw air compressor is the air compressor model with the highest market share, which contains air suction filter, compressor host, oil separation bucket, oil cooler and compressed air cooler (after-cooler) in the air compressor. The oil-gas mixture discharged by the compressor is separated by the oil separation bucket, the separated oil is cooled by the oil cooler and then returned to the compressor, and the compressed air is cooled by the cooler and then enters a gas storage buffer tank. Then, it is processed by pre-filter, dryer and post-filter respectively and then enters another gas storage buffer tank, and then is supplied to the user side through the pipe network. Because air contains a certain amount of moisture, i.e. moisture content, the dew point temperature of compressed air increases, and the moisture in the air will condense when the compressed air is cooled, so the air flowing out of the air cooler of the air compressor will carry condensed water. Therefore, the first gas storage buffer tank is usually called "wet tank", and the air dried by cold drying or suction drying does not carry liquid droplets, so the gas storage buffer tank connected with the user side is called "dry tank". The two gas storage buffer tanks mainly play the role of stabilizing pressure to reduce pressure fluctuation caused by gas change.

[0004] In the prior art, the wet tank and the dry tank have no structural difference, and only the bottom of the wet tank is provided with a liquid discharge valve. The gas storage buffer tank does not have a gas-liquid separation function, so part of the condensed water will enter the dryer for post-processing along with the compressed air, or be discharged in the cold dryer along with the further condensed water, or be absorbed by the adsorbent in the adsorption dryer. No matter which post-processing dryer is used, this part of the condensed water will increase the energy consumption of the post-processing system, or affect the quality of the final compressed air. Taking the most commonly used refrigeration dryer as an example, water has a high specific heat capacity, and the unseparated water entering the evaporator of the cold dryer will absorb a large amount of cold energy and be discharged from the system, resulting in an increase in the energy consumption of the cold dryer or an increase in the dew point of the compressed air at the outlet of the cold dryer. In addition to the condensed water, the oil in the oil bucket that is not completely separated will also enter the post-processing equipment. If a cold dryer is used, the heat transfer performance of the heat exchanger will be greatly reduced, and if it enters the adsorption dryer, the adsorption performance of the adsorbent will be damaged. With the continuous accumulation of oil, the energy consumption of the compressed air supply system will be continuously increased, and it will also become an important hidden danger to damage the stability of the system.

[0005] Therefore, it is necessary to provide a wet compressed air storage buffer tank with gas-liquid separation, which not only has a gas storage buffer function, but also can separate oil and condensed water in the compressed air step by step, improve separation efficiency, and does not increase pressure loss. Content of the utility model

[0006] In view of the deficiencies of the prior art, the utility model provides a wet compressed air storage buffer tank, which not only has a gas storage buffer function, but also can separate oil and condensed water in the compressed air step by step, improve separation efficiency, and does not increase pressure loss, effectively handles the condensed water and oil in the compressed air discharged from the air compressor, reduces the energy consumption of the post-processing part of the compressed air supply system, guarantees the quality of the compressed air, saves electric energy and electricity cost, and brings tangible economic benefits to enterprises.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] The application provides a wet compressed air storage buffer tank with gas-liquid separation, which comprises a tank body, wherein the bottom end of the tank body is provided with a first liquid discharge port, the top of the lateral wall of the tank body is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is tightly connected with the tank body and extends to the middle and lower part of the tank body, the outlet of the air inlet pipe is vertically downward, the air outlet pipe is tightly connected with the tank body and extends into the tank body, the inlet of the air outlet pipe is vertically upward, the middle part of the inner wall of the tank body is provided with a row of air guide plates which are upwardly inclined and form a liquid storage space with the inner wall of the tank body at a certain angle, the middle part of the lateral wall of the tank body is provided with a second liquid discharge port which is communicated with the liquid storage space, the bottom of the inner wall of the tank body is provided with a mist eliminator which is located below the outlet of the air inlet pipe, and the first liquid discharge port is located below the mist eliminator.

[0009] Further, the vertical distance between the outlet of the air inlet pipe and the upper surface of the mist eliminator is not less than 1.2 times the pipe diameter of the air inlet pipe.

[0010] Further, the angle between the air guide plate and the inner wall of the tank body is not more than 45 degrees, and the distance between the top of the air guide plate and the inner wall of the tank body is not more than 1 / 3 of the inner diameter of the tank body.

[0011] Further, the inlet of the air inlet pipe is horizontally arranged or the inlet of the air inlet pipe is arranged directly above the top of the tank body.

[0012] Further, the mist eliminator is a plastic part with certain structural strength or a stainless steel part with anti-rust function.

[0013] According to the wet compressed air storage buffer tank with gas-liquid separation, the bottom end of the tank body is provided with a first liquid discharge port, the top of the lateral wall of the tank body is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is tightly connected with the tank body and extends to the middle and lower part of the tank body, the outlet of the air inlet pipe is vertically downward, the air outlet pipe is tightly connected with the tank body and extends into the tank body, the inlet of the air outlet pipe is vertically upward, the middle part of the inner wall of the tank body is provided with a row of air guide plates which are upwardly inclined and form a liquid storage space with the inner wall of the tank body at a certain angle, the middle part of the lateral wall of the tank body is provided with a second liquid discharge port which is communicated with the liquid storage space, the bottom of the inner wall of the tank body is provided with a mist eliminator which is located below the air outlet pipe, and the first liquid discharge port is located below the mist eliminator. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the present application, the drawings used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 is the overall schematic view of the wet compressed air storage buffer tank with gas-liquid separation provided by an embodiment of the present application;

[0016] Figure 2 is the side view of the wet compressed air storage buffer tank with gas-liquid separation provided by an embodiment of the present application;

[0017] Figure 3 is the sectional view of the wet compressed air storage buffer tank with gas-liquid separation provided by an embodiment of the present application;

[0018] Figure 4 is another sectional view of the wet compressed air storage buffer tank with gas-liquid separation provided by an embodiment of the present application;

[0019] Figure 5 is the structural schematic view of the wet compressed air storage buffer tank with gas-liquid separation provided by an embodiment of the present application applied to a compressed air supply system. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1 to 5The wet compressed air storage buffer tank with gas-liquid separation in the embodiment comprises a tank body 100, a first liquid discharge port 107 is arranged at the bottom end of the tank body 100, an air inlet pipe 101 and an air outlet pipe 102 are arranged at the top of the side wall of the tank body 100, the air inlet pipe 101 and the air outlet pipe 102 can be arranged on the opposite sides of the top of the side wall of the tank body 100, the air inlet pipe 101 penetrates the side wall of the tank body 100, the air inlet pipe 101 is tightly connected with the tank body 100 and extends to the middle and lower part of the tank body 100, the outlet of the air inlet pipe 101 is vertically downward, the air outlet pipe 102 penetrates the side wall of the tank body 100, the air outlet pipe 102 is tightly connected with the tank body 100 and extends into the tank body 100, the inlet of the air outlet pipe 102 is vertically upward, a wind guide plate 104 is arranged on the middle part of the inner wall of the tank body 100, the wind guide plate 104 is arranged on the air inlet pipe 101 and is inclined upward and forms a certain angle with the inner wall of the tank body 100, that is, the outlet of the air inlet pipe 101 extends into the wind guide plate 104, a second liquid discharge port 105 is arranged on the middle part of the outer wall of the tank body 100 and is communicated with the liquid storage space 103, a mist filter 106 is arranged on the bottom of the inner wall of the tank body 100 and is below the outlet of the air inlet pipe 101, the outlet of the air inlet pipe 101 is vertically arranged relative to the mist filter 106, the mist filter 106 is a gas-liquid filter, and the first liquid discharge port 107 is below the mist filter 106. The embodiment not only has the air storage and buffer function, but also can separate the oil and condensed water in the compressed air step by step, improve the separation efficiency, and does not increase the pressure loss, effectively removes the condensed water and oil in the compressed air discharged by the air compressor, reduces the energy consumption of the compressed air supply system, guarantees the quality of the compressed air, saves the electric energy and the cost, and brings the actual economic benefits to the enterprise.

[0022] The specific process of the wet compressed air storage buffer tank with gas-liquid separation provided in the embodiment for step-by-step separation of oil and condensed water in compressed air is as follows: first separation: the air discharged from the air inlet of the air inlet pipe 101 blows to the mist pad 106, and then flows upwards again, and large-diameter oil droplets and water droplets are separated by relying on gravity and the function of the mist pad 106, and the large-diameter oil droplets and water droplets are discharged from the tank body 100 through the first liquid discharge port 107; second separation: when passing through the air guide plate 104, the deflected air flows upwards by the flow guiding effect of the lower surface of the air guide plate 104, small-diameter oil and water are gathered on the surface of the air guide plate 104, flow to the bottom by gravity, or are brought into the upper part, and are gathered along the upper surface in the liquid storage space 103 formed by the air guide plate 104 and the inner wall of the tank body 100, and the small-diameter oil and water gathered in the liquid storage space 103 are discharged from the tank body 100 through the second liquid discharge port 105; third separation: the rising air blows to the top surface of the tank body 100, and then bends into the inlet of the air discharge pipe 102, the inner wall of the tank body 100 can provide a third condensation opportunity for small-diameter oil and water, and the condensed oil and water are also gathered in the liquid storage space 103 formed by the air guide plate 104 and the inner wall of the tank body 100, and are discharged from the tank body 100 through the second liquid discharge port 105.

[0023] Preferably, in the embodiment, the vertical distance from the outlet of the air inlet pipe 101 to the upper surface of the mist pad 106 is not less than 1.2 times the pipe diameter of the air inlet pipe 101, so that when the air discharged from the air inlet of the air inlet pipe 101 blows to the mist pad 106, the air can flow upwards again better, relying on gravity and the function of the mist pad 106, so as to realize the separation of large-diameter oil droplets and water droplets. Herein, the embodiment is not limited to this provision only.

[0024] Preferably, in the embodiment, the included angle between the air guide plate 104 and the inner wall of the tank body 100 is not greater than 45°, and the distance from the top of the air guide plate 104 to the inner wall of the tank body 100 is not greater than 1 / 3 of the inner diameter of the tank body 100,

[0025] Thus, it is more conducive for the deflected air to flow upwards by the flow guiding effect of the lower surface of the air guide plate 104, and the small-diameter oil and water are gathered on the surface of the air guide plate 104, flow to the bottom by gravity, or are brought into the upper part, and are gathered along the upper surface in the liquid storage space 103 formed by the air guide plate 104 and the inner wall of the tank body 100. Herein, the embodiment is not limited to this provision only.

[0026] In the embodiment, the inlet of the air inlet pipe 101 is arranged right above the top of the tank body 100, at this time, the air inlet pipe 101 is straight pipe, the air inlet pipe 101 is arranged vertically relative to the mist eliminator 106, the inlet of the air inlet pipe 101 is arranged right above the top of the tank body 100, and the outlet of the air inlet pipe 101 is arranged vertically downward, in this case, the air discharged from the inlet of the air inlet pipe 101 is also blown to the mist eliminator 106, the air is bent upward again, and the separation of the large-diameter oil droplets and water droplets is realized by the gravity and the function of the mist eliminator 106, and the large-diameter oil droplets and water droplets are also discharged from the tank body 100 through the first liquid discharge port 107.

[0027] Preferably, in the embodiment, the mist eliminator 106 is a plastic part with a certain structural strength or a stainless steel with a rust-proof function.

[0028] It should be noted that, as shown in Figure 5 The wet compressed air storage buffer tank with gas-liquid separation provided in the embodiment can be installed in a compressed air supply system, the compressed air supply system comprising: an air compressor 200 located on one side of the wet compressed air storage buffer tank 100 and connected with the air outlet pipe 102, a pre-filter 300 located on the other side of the wet compressed air storage buffer tank 100 and connected with the air inlet pipe 101, a cold dryer 400 located on the side of the pre-filter 300 away from the wet compressed air storage buffer tank 100, a post-filter 500 located on the side of the cold dryer 400 away from the pre-filter 300, and a dry storage tank 600 located on the side of the pre-filter 300 away from the setting filter 600, the dry storage tank 600 being used for air supply, wherein the automatic or manual liquid discharge device 108 is installed on the first liquid discharge port 107 and the second liquid discharge port 105, respectively, so that the influence of the oil and condensed water in the air discharged from the air compressor on the post-processing device can be effectively overcome.

[0029] According to the wet compressed air storage buffer tank with gas-liquid separation of the above-mentioned embodiment of the utility model, including a tank body, the tank body bottom is equipped with a first liquid discharge port, the tank body side wall top is equipped with air inlet pipe and exhaust pipe, air inlet pipe is closely connected with tank body, and extends to the middle and lower part in tank body, and its outlet is vertically downward, exhaust pipe is closely connected with the tank body, and extends into the tank body, and its inlet is vertically upward, the middle part of tank body inner wall is equipped with a ring of air deflector which is upwardly inclined and is formed with a certain angle with the tank body inner wall, the middle part of tank body outer wall is equipped with a second liquid discharge port which is communicated with the liquid storage space, the bottom of tank body inner wall is equipped with a mousse net which is below the exhaust pipe, and the first liquid discharge port is below the mousse net. The embodiment not only has the air storage buffer function, but also can separate the oil and condensate water in the compressed air step by step, improve the separation efficiency, and does not increase the pressure loss, effectively handle the condensate water and oil in the compressed air discharged by the air machine, reduce the energy consumption of the compressed air supply system processing part, ensure the quality of the compressed air, save the electric energy and the electricity cost, and bring the practical economic benefits to the enterprise.

[0030] It should be noted that, in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0031] Although embodiments of the utility model have been shown and described, it is to be understood that the scope of the utility model is not limited to these embodiments. Changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the utility model as defined by the following claims and their equivalents.

Claims

1. A wet compressed air storage surge tank with gas-liquid separation, characterized in that, The application relates to a liquid tank, which comprises a tank body, a first liquid outlet arranged at the bottom end of the tank body, an air inlet pipe and an air outlet pipe arranged at the top of the side wall of the tank body, the air inlet pipe being tightly connected with the tank body and extending to the middle and lower part of the tank body, the outlet of the air inlet pipe being vertically downward, the air outlet pipe being tightly connected with the tank body and extending into the tank body, the inlet of the air outlet pipe being vertically upward, a wind guide plate being arranged at the middle part of the inner wall of the tank body, the wind guide plate being upwardly inclined and forming a liquid storage space with the inner wall of the tank body at a certain angle, a second liquid outlet being arranged at the middle part of the outer side wall of the tank body and being communicated with the liquid storage space, a mist supplementing net being arranged at the bottom of the inner wall of the tank body and being located below the outlet of the air inlet pipe, and the first liquid outlet being located below the mist supplementing net.

2. A wet compressed air storage buffer tank with gas-liquid separation according to claim 1, characterized in that, The vertical distance between the outlet of the air inlet pipe and the upper surface of the mist supplementing net is not less than 1.2 times the diameter of the air inlet pipe.

3. A wet compressed air storage buffer tank with gas-liquid separation according to claim 1, characterized in that, The angle between the wind guide plate and the inner wall of the tank body is not more than 45 DEG, and the distance between the top of the wind guide plate and the inner wall of the tank body is not more than 1 / 3 of the inner diameter of the tank body.

4. The wet compressed air storage buffer tank with gas-liquid separation according to claim 1, characterized in that, The inlet of the air inlet pipe is arranged directly above the top of the tank body.

5. The wet compressed air storage buffer tank with gas-liquid separation according to claim 1, characterized in that, The mist supplementing net is a plastic part with certain structural strength or a stainless steel part with rust-proof function.

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