Gas-liquid separator

Abstract

The utility model discloses a gas-liquid separator in the field of hydrogen energy fuel cells, which comprises a box body, a primary separation cavity, a secondary separation cavity and a water storage chamber are arranged in the box body, and a water outlet valve and a gas outlet are arranged on the box body; the baffle structure is arranged in the first-stage separation cavity and is used for realizing gas-liquid separation; the cyclone structure is arranged in the secondary separation cavity and is used for realizing gas-liquid separation; the first fluid inlet is formed in the box body and communicates with the first-stage separation cavity, and the second fluid inlet is formed in the box body and communicates with the first-stage separation cavity; the gas-liquid separator has the advantages that a baffle structure and a cyclone structure are combined for gas-liquid separation, low-flow mixtures and high-flow mixtures can be efficiently treated, the gas-liquid separation effect is better, and space and resources are saved due to the arrangement of double inlets.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy fuel cells, in particular to a gas-liquid separator. Background Art

[0002] Currently, the commonly used gas-liquid separators are divided into two types: cyclone type and baffle type. The baffle type gas-liquid separator needs to set up multiple baffles to achieve gas-liquid separation, but due to the excessive number of baffles, there will be a problem of excessive pressure drop, which will increase the power consumption of the hydrogen circulation pump, and when it comes to high-flow gas-liquid mixtures, it will cause secondary splashing of the liquid, resulting in poor separation effect. The cyclone type gas-liquid separator mainly uses the centrifugal force principle to separate gas and liquid. When the gas flow rate is too slow and the inertia of the liquid is too small, gas-liquid separation cannot be achieved.

[0003] In addition, the commonly used gas-liquid separators currently have only one inlet, and when integrating multiple stack systems, a joint merge or multiple gas-liquid separators are required, resulting in unnecessary waste of space and resources.

[0004] To this end, we propose a gas-liquid separator. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a gas-liquid separator.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is:

[0007] A gas-liquid separator comprises a casing, wherein a primary separation chamber, a secondary separation chamber and a water storage chamber are arranged in the casing, the secondary separation chamber is connected to the primary separation chamber, the primary separation chamber and the secondary separation chamber are both connected to the water storage chamber, a water outlet valve and an air outlet are arranged on the casing, the water outlet valve is connected to the water storage chamber, and the air outlet is connected to the secondary separation chamber; a baffle structure, wherein the baffle structure is arranged in the primary separation chamber for realizing gas-liquid separation; a cyclone structure, wherein the cyclone structure is arranged in the secondary separation chamber for realizing gas-liquid separation; a first fluid inlet, wherein the first fluid inlet is arranged on the casing and connected to the primary separation chamber, and the height of the first fluid inlet matches the bottom height of the primary separation chamber; and a second fluid inlet, wherein the second fluid inlet is arranged on the casing and connected to the primary separation chamber, and the height of the second fluid inlet matches the height of the first fluid inlet.

[0008] By setting a primary separation chamber and a secondary separation chamber, and setting a baffle structure in the primary separation chamber, and setting a cyclone structure in the secondary separation chamber, the entire device combines the baffle structure and the cyclone structure. The baffle structure can efficiently cope with low flow conditions, and the cyclone structure can cope with high flow conditions. In addition, two fluid inlets are set to allow two gas-liquid mixtures to be introduced at the same time, which is used in a dual-stack fuel cell system to avoid waste of space and resources.

[0009] It is further defined that the box body includes a top cover, a shell in the middle and a base at the bottom; the air outlet is arranged on the top cover, the water storage chamber and the water outlet valve are both arranged on the base, and the first-level separation chamber and the second-level separation chamber are both arranged in the shell; by arranging the box body into three sections, it is more convenient to disassemble, assemble and maintain.

[0010] It is further defined that the baffle structure includes a guide plate, a first baffle and a second baffle; the guide plate is L-shaped, and the opening of the guide plate is arranged relative to the side wall of the shell where the first fluid inlet is located to form a primary separation chamber, and a gap is left between the guide plate and the side wall of the shell to communicate with the water storage chamber, the first baffle is flat, and the first baffle is inclined at the lower part of the primary separation chamber, the second baffle is "へ"-shaped, and the opening of the second baffle is inclined downward at the upper part of the primary separation chamber, the second baffle and the first baffle are staggered, and a gap is provided between the first baffle and the second baffle and the side wall of the primary separation chamber; by arranging the first baffle and the second baffle, and staggering the first baffle and the second baffle, the contact area and contact time with the gas-liquid mixture can be increased, so that the gas-liquid separation effect is better.

[0011] It is further defined that the cyclone structure includes a trumpet-shaped air cylinder and a plurality of guide vanes arranged on the outer circumference of the air cylinder, the plurality of guide vanes are arranged at an angle to form a spiral shape, the top of the air cylinder is connected to the top cover, and the cyclone structure is located at the top of the secondary separation chamber; the cyclone structure is arranged in such a way that the gas-liquid mixture separated by the primary separation chamber enters the secondary separation chamber from the guide vanes of the cyclone structure, and the inclined guide vanes form a cyclone structure to separate the gas-liquid mixture, and the liquid flows down along the outer wall of the air cylinder, and the gas first enters the secondary separation chamber and then rises and flows out of the air cylinder to be discharged at the outlet. The air cylinder is arranged in such a way that the gas flow area can be increased, the effect of radial velocity can be reduced, and thus the amount of droplets entering the outlet can be reduced.

[0012] It is further specified that a heating component is provided in the water outlet valve for heating the water outlet valve, and a liquid level gauge is also provided on the base, and the sensing probe of the liquid level gauge is vertically arranged in the water storage chamber; by arranging a heating component in the water outlet valve to heat it, it can avoid the water outlet valve from freezing at low temperatures and affecting the discharge of water separated by gas and liquid, and the liquid level gauge can monitor the water storage depth in the water storage chamber to facilitate reminding personnel to drain water in time.

[0013] It is further defined that a pressure sensor is provided on the top cover for monitoring the pressure of the air outlet.

[0014] It is further defined that a nitrogen exhaust valve is also provided on the shell, the nitrogen exhaust valve is located below the air outlet, and the nitrogen exhaust valve is connected to the water storage chamber; a nitrogen exhaust valve is provided to exhaust excess air in the shell, thereby ensuring the hydrogen concentration on the anode side and preventing the efficiency of the fuel cell system from decreasing.

[0015] It is further defined that a water dividing plate is provided at the bottom of the secondary separation chamber, and the water dividing plate includes a frustum in the middle, a plurality of water dividing blades arranged on the circumference of the frustum, and a connecting ring connecting the plurality of water dividing blades; when the water dividing plate is arranged in this way, a gas-liquid mixture generates a high-speed cyclone through the guide vane, and due to the action of centrifugal force, the gas-liquid mixture rotating at a high speed in the secondary separation chamber throws water droplets therein to the inner wall of the secondary separation chamber, and after the water droplets condense on the inner wall of the secondary separation chamber, they flow into the water storage chamber through the gap between adjacent water dividing blades under the action of gravity, and the water dividing blades can play a role in gas-liquid separation.

[0016] It is further defined that baffle holes are provided on the left and right sides of the first baffle and the second baffle; the baffle holes are provided on the left and right sides of the first baffle and the second baffle to reduce the resistance of the gas-liquid mixture passing therethrough, thereby ensuring the gas pressure at the outlet.

[0017] It is further defined that it also includes a cylindrical component, which is arranged between the guide plate and the side wall of the shell to form a secondary separation chamber, and the water diversion plate is fixedly connected to the bottom of the cylindrical component through a connecting ring; the arrangement of the secondary separation chamber facilitates the installation of the water diversion plate.

[0018] The beneficial effects of the utility model are as follows: the baffle structure and the cyclone structure are combined to perform gas-liquid separation, which can efficiently deal with low-flow mixtures and high-flow mixtures, with better gas-liquid separation effects, and the dual-inlet setting saves space and resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the utility model from the right rear perspective;

[0021] Figure 3 It is an exploded view of the utility model from the right rear perspective;

[0022] Figure 4 for Figure 1 Sectional view in the AA direction;

[0023] Figure 5 for Figure 1 Cross-sectional view in the BB direction;

[0024] Figure 6 It is a three-dimensional schematic diagram of the cyclone structure;

[0025] Figure 7 It is a three-dimensional schematic diagram of the water distribution plate.

[0026] The symbols of the components are as follows:

[0027] A first fluid inlet 1, a second fluid inlet 2, a primary separation chamber 3, a secondary separation chamber 4, a water storage chamber 5, a water outlet valve 6, an air outlet 7, a top cover 8, a shell 9, a base 10, a liquid level gauge 11, a pressure sensor 12, a nitrogen exhaust valve 13, a guide plate 14, a first baffle 15, a second baffle 16, a baffle hole 17, a cylindrical member 18, a vent 19, a guide plate 20, a truncated cone 21, a water-dividing blade 22, a connecting ring 23, and a sealing ring 24. DETAILED DESCRIPTION

[0028] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0029] Example:

[0030] like Figure 1-Figure 7 As shown, a gas-liquid separator comprises a casing, a baffle structure, a cyclone structure, a first fluid inlet 1, a second fluid inlet 2, a primary separation chamber 3, a secondary separation chamber 4, a water storage chamber 5, a water outlet valve 6 and an air outlet 7. The casing comprises a top cover 8 at the top, a shell 9 in the middle and a base 10 at the bottom. A sealing ring 24 is provided between the top cover 8 and the shell 9, and between the shell 9 and the base 10. The air outlet 7 is provided on the top cover 8, the water storage chamber 5 and the water outlet valve 6 are both provided on the base 10, the primary separation chamber 3 and the secondary separation chamber 4 are both provided in the shell 9; the primary separation chamber 3 and the secondary separation chamber 4 are both connected to the water storage chamber 5, the water outlet valve 6 is connected to the water storage chamber 5, a heating component is provided in the water outlet valve 6 for heating the water outlet valve 6, and a liquid level meter is also provided at the bottom of the base 10. 11, the induction probe of the liquid level meter 11 extends vertically into the water storage chamber 5; the air outlet 7 is connected to the secondary separation chamber 4, and a pressure sensor 12 is provided on the top cover 8 for monitoring the pressure of the air outlet 7. A nitrogen exhaust valve 13 is also provided on the shell 9, and the nitrogen exhaust valve 13 is located below the air outlet 7, and the nitrogen exhaust valve 13 is connected to the water storage chamber 5; the baffle structure is provided in the primary separation chamber 3 for achieving gas-liquid separation; the cyclone structure is provided in the secondary separation chamber 4 for achieving gas-liquid separation; the first fluid inlet 1 is provided on the shell 9 and connected to the primary separation chamber 3, and the height of the first fluid inlet 1 matches the bottom height of the primary separation chamber 3; the second fluid inlet 2 is provided on the shell 9 and connected to the primary separation chamber 3, and the height of the second fluid inlet 2 matches the height of the first fluid inlet 1;

[0031] The baffle structure includes a guide plate 14, a first baffle 15 and a second baffle 16; the guide plate 14 is L-shaped, and the opening of the guide plate 14 is arranged relative to the side wall of the shell 9 where the first fluid inlet 1 is located to form a primary separation chamber 3. A notch is left between the guide plate 14 and the side wall of the shell 9 to communicate with the water storage chamber 5. The first baffle 15 is flat and is tilted at the lower part of the primary separation chamber 3. The second baffle 16 is "へ"-shaped, and the opening of the second baffle 16 is tilted downward and arranged at the upper part of the primary separation chamber 3. The second baffle 16 and the first baffle 15 are staggered, and the front and rear sides of the first baffle 15 and the second baffle 16 are spaced from the side wall of the primary separation chamber 3. The left and right sides of the first baffle 15 and the second baffle 16 are both provided with baffle holes 17;

[0032] It also includes a cylindrical component 18, which is arranged between the guide plate 14 and the side wall of the shell 9 to form a secondary separation chamber 4. The cyclone structure includes a trumpet-shaped air cylinder 19 and a plurality of guide vanes 20 arranged on the outer periphery of the air cylinder 19. The plurality of guide vanes 20 are all inclined to form a spiral shape, and the top of the air cylinder 19 is threadedly connected to the top cover 8; a water diversion plate is provided at the bottom of the secondary separation chamber 4, and the water diversion plate includes a central cone 21, a plurality of water diversion blades 22 arranged on the circumference of the cone 21, and a connecting ring 23 connecting the plurality of water diversion blades 22; the water diversion plate is fixedly connected to the bottom of the cylindrical component 18 by welding the connecting ring 23.

[0033] By setting a primary separation chamber 3 and a secondary separation chamber 4, and setting a baffle structure in the primary separation chamber 3, and setting a cyclone structure in the secondary separation chamber 4, the entire device combines the baffle structure and the cyclone structure, the baffle structure can efficiently cope with low flow conditions, the cyclone structure can cope with high flow conditions, and two fluid inlets are set to allow two gas-liquid mixtures to be introduced at the same time, which is used for a dual-stack fuel cell system to avoid waste of space and resources; by setting the box body into three sections, it is more convenient to disassemble and maintain; by setting the first baffle 15 and the second baffle 15, the baffle structure can be effectively handled by the cyclone structure, and the cyclone structure can be effectively handled by the cyclone structure, and the baffle ... The plate 16, and the first baffle plate 15 and the second baffle plate 16 are staggered to increase the contact area and contact time with the gas-liquid mixture, so that the gas-liquid separation effect is better; the cyclone structure is set in this way so that the gas-liquid mixture separated by the first separation chamber 3 enters the second separation chamber 4 from the guide vane 20 of the cyclone structure, and the inclined guide vane 20 forms a cyclone structure to separate the gas-liquid mixture, and the liquid flows down along the outer wall of the ventilation cylinder 19, and the gas first enters the second separation chamber 4 and then rises from the ventilation cylinder 19 to the outlet 7 for discharge. The cylinder 19 can increase the gas flow area and reduce the effect of radial velocity, thereby reducing the amount of droplets entering the gas outlet 7; by arranging a heating component in the water outlet valve 6 to heat it, it can be avoided that the water outlet valve 6 freezes at low temperatures and affects the discharge of water separated by gas and liquid; the liquid level meter 11 can monitor the water storage depth in the water storage chamber 5 to remind personnel to drain water in time; a nitrogen exhaust valve 13 can be set to discharge excess air in the shell 9 to ensure the hydrogen concentration on the anode side and prevent the efficiency of the fuel cell system from decreasing; in this way, the water distribution plate is set, and the gas-liquid mixture generates a high-speed cyclone through the guide plate 20 Due to the centrifugal force, the gas-liquid mixture rotating at high speed in the secondary separation chamber 4 throws the water droplets therein to the inner wall of the secondary separation chamber 4. After the water droplets condense on the inner wall of the secondary separation chamber 4, they flow into the water storage chamber 5 through the gap between adjacent water-dividing blades 22 under the action of gravity. The water-dividing blades 22 can play a role in gas-liquid separation; baffle holes 17 are provided on the left and right sides of the first baffle plate 15 and the second baffle plate 16 to reduce the resistance of the gas-liquid mixture when passing through, thereby ensuring the gas pressure of the gas outlet 7; the secondary separation chamber 4 is arranged in this way to facilitate the installation of the water-dividing plate.

[0034] When in use, the gas-liquid mixture is introduced into the primary separation chamber 3 from the first fluid inlet 1 and the second fluid inlet 2, and the gas-liquid mixture is separated by the obstruction of the first baffle 15 and the second baffle 16. Liquid water condenses on the lower surfaces of the first baffle 15 and the second baffle 16 to form droplets, which are dripped downward onto the guide plate 14 by gravity and flow into the water storage chamber 5 along the gap between the guide plate 14 and the side wall of the shell 9 for storage. The gas-liquid mixture continues to rise, passes through the obstruction of the inner wall of the top cover 8, and then enters the guide plate 20 of the cyclone structure downward to form a cyclone and enter the secondary separation chamber 4. The liquid water thrown out due to centrifugal force condenses into droplets on the inner wall of the cylindrical component 18, and flows into the water storage chamber 5 for storage along the inner wall of the cylindrical component 18 through the gap between adjacent water-dividing blades 22. The hydrogen separated in the secondary separation chamber 4 is discharged from the air outlet 7 from the vent 19 of the cyclone structure from bottom to top.

Claims

1. A gas-liquid separator, It is characterized in that include: A box body, wherein a primary separation chamber (3), a secondary separation chamber (4) and a water storage chamber (5) are provided in the box body, the secondary separation chamber (4) is in communication with the primary separation chamber (3), the primary separation chamber (3) and the secondary separation chamber (4) are both in communication with the water storage chamber (5), and the box body is provided with a water outlet valve (6) and an air outlet (7), the water outlet valve (6) is in communication with the water storage chamber (5), and the air outlet (7) is in communication with the secondary separation chamber (4); a baffle structure, the baffle structure being arranged in the primary separation chamber (3) and being used for achieving gas-liquid separation; A cyclone structure, the cyclone structure being arranged in the secondary separation chamber (4) for achieving gas-liquid separation; A first fluid inlet (1), the first fluid inlet (1) is arranged on the box body and communicates with the primary separation chamber (3), and the height of the first fluid inlet (1) matches the bottom height of the primary separation chamber (3); A second fluid inlet (2), wherein the second fluid inlet (2) is disposed on the housing and communicates with the primary separation chamber (3), and the height of the second fluid inlet (2) matches the height of the first fluid inlet (1).

2. The gas-liquid separator according to claim 1, It is characterized in that The box body comprises a top cover (8) at the top, a shell (9) in the middle and a base (10) at the bottom; The air outlet (7) is arranged on the top cover (8), the water storage chamber (5) and the water outlet valve (6) are both arranged on the base (10), and the primary separation chamber (3) and the secondary separation chamber (4) are both arranged in the shell (9).

3. The gas-liquid separator according to claim 2, It is characterized in that The baffle structure comprises a guide plate (14), a first baffle (15) and a second baffle (16); The guide plate (14) is L-shaped, and the opening of the guide plate (14) is arranged relative to the side wall of the shell (9) where the first fluid inlet (1) is located to form the primary separation chamber (3). A notch is left between the guide plate (14) and the side wall of the shell (9) to communicate with the water storage chamber (5). The first baffle plate (15) is flat and is arranged obliquely at the lower part of the primary separation chamber (3). The second baffle plate (16) is "へ"-shaped and is arranged obliquely downward at the upper part of the primary separation chamber (3). The second baffle plate (16) and the first baffle plate (15) are staggered, and the front and rear sides of the first baffle plate (15) and the second baffle plate (16) are spaced from the side wall of the primary separation chamber (3).

4. The gas-liquid separator according to claim 2, It is characterized in that The cyclone structure comprises a trumpet-shaped ventilation cylinder (19) and a plurality of guide vanes (20) arranged on the outer periphery of the ventilation cylinder (19), wherein the plurality of guide vanes (20) are arranged obliquely to form a spiral shape, the top of the ventilation cylinder (19) is connected to the top cover (8), and the cyclone structure is located at the top of the secondary separation chamber (4).

5. The gas-liquid separator according to claim 2, It is characterized in that The water outlet valve (6) is provided with a heating component for heating the water outlet valve (6), and the base (10) is also provided with a liquid level meter (11), and the sensing probe of the liquid level meter (11) is vertically arranged in the water storage chamber (5).

6. The gas-liquid separator according to claim 2, It is characterized in that The top cover (8) is provided with a pressure sensor (12) for monitoring the pressure of the air outlet (7).

7. The gas-liquid separator according to claim 2, It is characterized in that The housing (9) is also provided with a nitrogen exhaust valve (13), the nitrogen exhaust valve (13) is located below the gas outlet (7), and the nitrogen exhaust valve (13) is in communication with the water storage chamber (5).

8. The gas-liquid separator according to claim 3, It is characterized in that A water dividing plate is provided at the bottom of the secondary separation chamber (4), and the water dividing plate comprises a truncated cone (21) in the middle, a plurality of water dividing blades (22) arranged around the circumference of the truncated cone (21), and a connecting ring (23) connecting the plurality of water dividing blades (22).

9. The gas-liquid separator according to claim 3, It is characterized in that Baffle holes (17) are provided on the left and right sides of the first baffle (15) and the second baffle (16).

10. The gas-liquid separator according to claim 8, It is characterized in that It also includes a cylindrical component (18), which is arranged between the guide plate (14) and the side wall of the shell (9) to form the secondary separation chamber (4), and the water divider plate is fixedly connected to the bottom of the cylindrical component (18) through the connecting ring (23).

Images