Water vapor separation device

Abstract

The utility model discloses a water gas separation device, including jar body and separating piece, and the inside separation cavity of jar body is formed, and the one side of jar body and top are provided with the air inlet pipeline and compressed air outlet pipeline of communication with separation cavity respectively, separating piece is conical structure, and it is set up in separation cavity near the top of air inlet pipeline to divide separation cavity into the air cavity and the settling chamber of arrangement up and down, and the lateral surface of separating piece is provided with the intercommunication mouth for the air cavity and the settling chamber intercommunication, and the separation flow channel is formed between its outside and jar body inner wall surface. The utility model discloses a separating piece of rotating cone structure is arranged in separation cavity, and the strong centrifugal force of compressed air high -speed rotation that enters separation flow channel produces, and liquid water and impurity are effectively separated, and simultaneously, in the rotating process, the fluid and separating piece outside surface violent collision produce the gas mist, and the gas mist enters the air cavity and is discharged through the intercommunication mouth, and reach high -efficient separation effect.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation technology, specifically to a water-gas separation device. Background Technology

[0002] In water-lubricated oilless compressors, poor water-air separation can lead to excessive moisture content in the compressed air, causing problems such as equipment corrosion, product contamination, reduced system efficiency, and microbial growth. Traditional water-air separation devices often employ gravity settling or inertial impaction principles, which suffer from low separation efficiency, large size, and high pressure drop, making it difficult to meet the requirements for efficient and compact separation. Summary of the Invention

[0003] To overcome the above-mentioned defects, this utility model provides a water-gas separation device that achieves efficient gas-liquid separation by optimizing the separation structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is to provide a water-air separation device, comprising:

[0005] The tank body has a separation chamber inside, and an air inlet pipe and a compressed air outlet pipe communicating with the separation chamber are respectively provided on one side and the top of the tank body;

[0006] The separator has a conical structure and is located above the air inlet pipe in the separation chamber to divide the separation chamber into an upper and lower air chamber and a settling chamber. The side of the separator has a connecting port for connecting the air chamber and the settling chamber, and a separation flow channel is formed between its outer side and the inner wall of the tank.

[0007] As a further improvement of this utility model, the air outlet of the air inlet pipe is arranged parallel to the radial direction of the tank and extends into the interior of the tank, while being located at the upper part of the separation flow channel.

[0008] The connecting port is located near the upper end of the separator and on the side opposite to the air outlet of the air inlet pipe.

[0009] As a further improvement of this utility model, the separating component is coaxially arranged with the tank body, and a drain hole is provided at its lower tip.

[0010] A filter unit is provided below the tank near the compressed air outlet pipe. The filter unit includes a filter screen and a mounting plate for installing the filter screen into the tank. Two mounting plates are provided, which are parallel to each other along the axial direction of the tank and spaced apart, and each of them has a number of filter holes.

[0011] As a further improvement of this utility model, the filter screen is woven from stainless steel wire with a thickness of 80-100mm and a compressed air flow rate of 1.0-2.5m / s.

[0012] As a further improvement of this utility model, the tank is provided with a pressure gauge for detecting the pressure value inside the air chamber.

[0013] As a further improvement of this utility model, the tank body is also provided with a drainage pipe and a water outlet pipe communicating with the settling chamber. The water inlet of the drainage pipe is arranged parallel to the axial direction of the tank body and extends to the bottom of the tank body. The water outlet pipe is arranged radially along the tank body below the water outlet of the drainage pipe.

[0014] As a further improvement of this utility model, a level gauge is provided on the tank body for observing the liquid position in the settling chamber.

[0015] As a further improvement of this utility model, the tank body is provided with a float level switch communicating with the settling chamber on the side of the level gauge, and a water inlet communicating with the separation chamber is provided at the upper end of the tank body.

[0016] As a further improvement of this utility model, a sewage pipe is provided at the bottom of the body along its axial direction.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting a rotating cone structure in the separation chamber, the powerful centrifugal force generated by the high-speed rotation of the compressed air entering the separation channel effectively separates liquid water and impurities; at the same time, during the rotation, the fluid collides violently with the outer surface of the separator to generate mist, which enters the air chamber through the connecting port and is discharged, achieving a highly efficient separation effect.

[0019] 2. By combining the filtration unit and the separator in a complementary manner, the overall structure is optimized while achieving efficient water-air separation, giving the separation device significant advantages in terms of small size and low cost. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the present invention along the AA direction;

[0022] Figure 3 This is a schematic cross-sectional view of the present invention along the BB direction;

[0023] Figure 4 This is a schematic cross-sectional view of the present invention along the CC direction;

[0024] Figure 5 This is a schematic diagram showing the position and status of the separator and the air intake pipe of this utility model.

[0025] Referring to the accompanying drawings, the following explanations are provided:

[0026] 1. Tank body; 10. Separation chamber; 101. Air chamber; 102. Settling chamber; 11. Air inlet pipe; 12. Compressed air outlet pipe; 2. Separation component; 20. Side; 201. Outer side; 21. Connecting port; 22. Separation flow channel; 23. Drain hole; 3. Filter unit; 30. Filter screen; 31. Mounting plate; 311. Filter holes; 4. Pressure gauge; 5. Drain pipe; 50. Water inlet; 51. Water outlet; 6. Water outlet pipe; 7. Level gauge; 80. Float level switch; 81. Water inlet; 9. Sewage pipe. Detailed Implementation

[0027] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] See Figure 1 The water-gas separation device provided by this utility model is installed after the exhaust pipe of the compressor main unit and is mainly used for gas-liquid separation to provide dry and pure compressed air for subsequent equipment or processes. Furthermore, water-gas separation devices are divided into medium-pressure and low-pressure types according to their applications. The low-pressure water-gas separation device is typically designed with a pressure not exceeding 1.6 MPa and mainly uses oil-free water-lubricated compressors for water-gas separation, ensuring a separation efficiency of over 99%. The medium-pressure water-gas separation device typically operates in a pressure range of 1.0-10 MPa and is suitable for gas-liquid separation under high-temperature and high-pressure environments.

[0029] Continue reading Figures 1 to 5 The water-air separation device provided in this embodiment includes a tank 1 and a separator 2 disposed inside the tank 1 for water-air separation. Specifically, a cylindrical separation chamber 10 is formed inside the tank 1. An air inlet pipe 11 and a compressed air outlet pipe 12, which communicate with the separation chamber 10, are respectively provided on one side and the top of the tank 1. The outlet of the air inlet pipe 11 is arranged radially parallel to the tank 1 and extends into the interior of the tank 1 for supplying air into the separation chamber 10. The compressed air outlet pipe 12 is axially arranged at the center of the top of the tank 1 for discharging the separated compressed air.

[0030] The separator 2 is a rotating conical structure coaxially arranged within the separation chamber 10, with a taper of 120°. The separator 2 divides the separation chamber 10 into an upper and lower air chamber 101 and a settling chamber 102. A connecting port 21 is provided on the side 20 of the separator 2 to connect the air chamber 101 and the settling chamber 102. Simultaneously, a separation flow channel 22 is formed between the outer side 201 of the separator 2 and the inner wall of the tank 1. The outlet of the air inlet pipe 11 is positioned within the separation flow channel 22. The connecting port 21 is located near the upper end of the separator 2 and away from the outlet of the air inlet pipe 11 to prevent air input from the air inlet pipe 11 from entering the air chamber 101 and affecting the separation effect.

[0031] Furthermore, the conical design of the separation channel 22 causes it to gradually narrow from bottom to top, and the air inlet of the air inlet pipe 11 is located at the top of the separation channel 22. When compressed air rushes into the separation channel 22 at a high speed of 15-28 m / s through the air inlet pipe 11, it rotates at high speed at the top of the separation channel 22 and its downward speed is relatively reduced. During this process, liquid water and impurities are thrown towards the inner wall of the tank 1 due to centrifugal force, and at the same time, they collide with the outer surface 201 of the separator 2 to generate mist. At this time, since the speed of the air gradually decreases at the bottom of the separation channel, the liquid water and impurities can slide down the inner wall of the tank 1 and the outer surface 201 of the separator 2 to the bottom of the tank by their own gravity, while the mist enters the air chamber 101 through the connecting port 21 near the top of the separation channel 22 and is finally discharged from the compressed air outlet pipe 12, thus achieving efficient water-air separation.

[0032] Furthermore, after the compressed air passes through the separation channel 22 for centrifugal separation, there may still be a very small amount of water vapor or tiny impurities remaining. To further improve the dryness and cleanliness of the compressed air, in this embodiment, a filter unit 3 is installed inside the tank 1 below the compressed air outlet pipe 12 to further filter the compressed air that is about to be discharged. At the same time, a drain hole 23 is opened at the lower tip of the separator 2. This drain hole 23 is used to guide the liquid water produced by the filter unit 3 into the settling chamber 102.

[0033] The filter unit 3 includes a filter screen 30 and mounting plates 31 for installing the filter screen 30 inside the tank body 1. Two mounting plates 31 are configured, parallel to each other along the axial direction of the tank body 1 and spaced apart, each with several filter holes 311. The filter screen 30 is woven from stainless steel wire and has a thickness of 80–100 mm. During the filtration process, compressed air passes through the filter screen at a flow rate of 1.0–2.5 m / s, preferably 2.0 m / s. This effectively prevents high-speed airflow from damaging the filter screen, extending its service life, and also prevents clogging at low speeds, ensuring the stability and continuity of the filtration process.

[0034] This is achievable. The filter holes 311 on the two mounting plates 31 employ a cross-flow structure, meaning their positions are staggered. This forces the airflow to change direction multiple times as it passes through the filter, increasing the probability of inertial collisions between tiny droplets and the filter. This method further improves the efficiency of water vapor interception and enhances the effectiveness of water vapor separation.

[0035] Furthermore, the tank 1 is equipped with a pressure gauge 4 for detecting the pressure value inside the air chamber 101 and for conveniently detecting the internal pressure value of the system when the compressor is unloaded. The installation of pressure gauge 4 enables real-time monitoring of the pressure inside the tank, providing a strong guarantee for the stable and efficient operation of the entire compressed air system, allowing operators to keep abreast of the system dynamics and take corresponding measures to ensure that the system is always in good working condition.

[0036] Furthermore, the tank body 1 is also equipped with a drainage pipe 5 and a water outlet pipe 6 that are connected to the settling chamber 102.

[0037] During operation, the compressor requires circulating lubricating water to remove impurities and heat from the system. To ensure the cleanliness of the water system and its cooling efficiency, the lubricating water in the tank needs to be replaced regularly. Generally, the water-lubricated compressor needs to be drained every 200 to 300 hours of operation. The inlet 50 of the drain pipe 5 is parallel to the axial direction of the tank 1 and extends to the bottom of the tank 1 to ensure that the lubricating water deposited at the bottom of the tank is fully drawn out and discharged. The outlet pipe 6 is arranged radially below the outlet 51 of the drain pipe 5 along the tank 1. The outlet pipe 6 provides lubricating water to the compressor system.

[0038] Furthermore, a level gauge 7 is installed on the upper part of the tank 1 to observe the liquid level in the settling chamber 102. Specifically, a transparent window is opened in the tank, and the level gauge 7 is located within this window to facilitate observation of the liquid level within the tank. The main function of the level gauge is to precisely control the amount of water added during the initial testing of the compressor, when treated lubricating water needs to be added to the water-air separation device. This is achieved by the operator observing the liquid level displayed on the level gauge 7 in real time, ensuring that the added lubricating water reaches the level required for compressor operation.

[0039] Furthermore, based on the difference in application, the tank 1 of the water-air separator (low pressure) is equipped with a float level switch 80 connected to the settling chamber 102 next to the level gauge 7, and a water inlet 81 connected to the separation chamber 10 is provided at the upper end of the tank 1. The float level switch 80 is a conventional linkage-type float level switch, whose working principle is based on Archimedes' principle of buoyancy. When the liquid level in the settling chamber 102 changes, the float moves up and down with the rise and fall of the liquid level. Since the float is connected to the contact switch via a linkage, the movement of the float drives the linkage, thereby actuating the contact switch. This design allows the float level switch 80 to monitor the liquid level in the tank in real time. In actual operation, when the liquid level in the settling chamber 102 drops to the low water level, the float falls, triggering the contact switch via the linkage and sending a water replenishment signal. At this time, the water replenishment system connected to the water inlet 81 is started, and the treated lubricating water is injected into the separation chamber 10 through the water inlet 81.

[0040] Furthermore, the difference between a water-air separation device (medium pressure) and a water-air separator (low pressure) lies in the following: the float level switch is a non-contact magnetic float level gauge. The magnetic float level gauge transmits signals through magnetic field coupling, with no physical contact between the float and the indicator, avoiding damage to the indicator caused by medium pressure and extending the equipment's lifespan. Specifically, the float's average density is less than the density of the measured liquid, and it contains an internal permanent magnet. When the liquid level changes, the permanent magnet inside the float moves with the liquid level, generating a strong magnetic field. When the magnetic field approaches a small magnetic column at the corresponding height on the display panel, it overcomes the rotational resistance of the small magnetic column through magnetic force, causing it to rotate 180 degrees around its pivot. One side of the small magnetic column is red, and the other is white. Initially, the white side faces outwards. When the float's magnetic field attracts the small magnetic column and flips it over, the red side faces outwards. As the liquid level rises, all the small magnetic columns turn red sequentially; as the liquid level falls, the float's magnetic field moves downwards, and the small magnetic columns reset and flip back to their white side. Finally, the red-white boundary line on the display panel indicates the current liquid level height.

[0041] Furthermore, the drain pipe 9, axially arranged at the bottom of tank 1, is crucial for ensuring the stable operation of the water-air separation device. In winter, when the ambient temperature is below zero, moisture accumulates inside the water-air separation device. The expansion of frozen water can damage the device structure and affect system operation. The drain pipe 9 empties the accumulated water, preventing this problem. During long downtime, the water quality inside the device deteriorates. If residual moisture is not drained before startup, it can cause corrosion and wear on compressor components. The drain pipe 9 empties the water before startup, and then clean lubricating water is added through the water inlet, ensuring stable operation of the device.

[0042] It should be noted that in this embodiment, the control of the actions of each component is achieved using an existing PLC control system. As a conventional technology in this field, the PLC control system has mature application models and a wide user base; its working principles and operating procedures are well-known to industry professionals. Therefore, it will not be described in detail here.

[0043] The separation process of the water-gas separation device provided in this embodiment is as follows:

[0044] The water-air mixture is injected at high speed into the separation channel 22 from the inlet pipe 11. Upon entry, it rotates at high speed along the outer surface 201 of the separator 2. During this high-speed rotation, the fluid is subjected to mechanical centrifugal force, achieving initial separation. Simultaneously, the fluids collide violently with each other and with the separator 2. This series of actions effectively reduces the flow velocity of the water-air mixture, causing the originally fine water vapor particles to collide and aggregate, forming larger water droplets. Due to the significant weight of the water droplets, most of them naturally settle to the bottom of the tank 1 under the influence of gravity, completing the initial water-air separation.

[0045] The water-air mixture, after centrifugal and impact separation, then enters the filtration unit for further fine separation. The filtration unit intercepts the trace amounts of water vapor remaining in the compressed air, which then condenses back into water droplets. These water droplets, under the influence of gravity, settle to the bottom of the tank 1 through the drain hole 23 of the separator.

[0046] Finally, after the above multi-stage separation process, the compressed air, which is almost free of moisture, flows out through the compressed air outlet pipe 12, providing dry and pure compressed air for subsequent equipment or processes.

[0047] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A water-gas separation device, characterized in that, include: The tank (1) has a separation chamber (10) inside it. An air inlet pipe (11) and a compressed air outlet pipe (12) communicating with the separation chamber (10) are respectively provided on one side and the top of the tank (1). The separator (2) has a conical structure and is located above the air inlet pipe (11) in the separation chamber (10) to divide the separation chamber (10) into an upper and lower air chamber (101) and a settling chamber (102). The side (20) of the separator (2) has a connecting port (21) for connecting the air chamber (101) and the settling chamber (102), and a separation flow channel (22) is formed between its outer side (201) and the inner wall of the tank (1).

2. The water-gas separation device according to claim 1, characterized in that: The air outlet of the air inlet pipe (11) is arranged in parallel to the radial direction of the tank (1) and extends into the interior of the tank (1), while being located at the upper part of the separation channel (22). The connecting port (21) is located near the upper end of the separator (2) and away from the outlet side of the air inlet pipe (11).

3. The water-gas separation device according to claim 1, characterized in that: The separator (2) is coaxially arranged with the tank (1), and a drain hole (23) is opened at its lower tip. The tank (1) is provided with a filter unit (3) below the compressed air outlet pipe (12). The filter unit (3) includes a filter screen (30) and a mounting plate (31) for installing the filter screen (30) inside the tank (1). There are two mounting plates (31), which are parallel to each other along the axial direction of the tank (1) and spaced apart, and each of them has a number of filter holes (311).

4. The water-gas separation device according to claim 3, characterized in that: The filter screen (30) is woven from stainless steel wire with a thickness of 80-100mm and a compressed air flow rate of 1.0-2.5m / s.

5. The water-gas separation device according to claim 1, characterized in that: The tank (1) is equipped with a pressure gauge (4) for detecting the pressure value inside the air chamber (101).

6. The water-gas separation device according to claim 1, characterized in that: The tank (1) is also provided with a drainage pipe (5) and a water outlet pipe (6) connected to the settling chamber (102). The inlet (50) of the drainage pipe (5) is arranged parallel to the axial direction of the tank (1) and extends to the bottom of the tank (1). The water outlet pipe (6) is arranged radially along the tank (1) below the outlet (51) of the drainage pipe (5).

7. The water-gas separation device according to claim 1, characterized in that: The tank (1) is equipped with a level gauge (7) for observing the liquid position in the settling chamber (102).

8. The water-gas separation device according to claim 7, characterized in that: The tank (1) is provided with a float level switch (80) connected to the settling chamber (102) on the side of the level gauge (7), and a water inlet (81) connected to the separation chamber (10) is provided at the upper end of the tank (1).

9. The water-gas separation device according to claim 1, characterized in that: The bottom of the body (1) is provided with a sewage pipe (9) along its axial direction.

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