High pressure degassing surge tank

Abstract

This utility model relates to a high-pressure degassing buffer tank. It solves the technical problems of low degassing efficiency and insufficient microbubble handling capacity in existing systems. It includes a buffer tank body with buffer chambers, an inlet at the lower end of the buffer tank body, and an outlet on one side of the lower end of the buffer tank body. The buffer chamber is connected to both the inlet and outlet. An isolation chamber with an isolation cavity is connected to the upper end of the buffer tank body. The isolation chamber and the buffer chamber are connected by a connecting channel, and one end of the isolation chamber has an exhaust port. A double-sealed exhaust mechanism is provided between the buffer tank body and the isolation chamber. A coalescing structure is provided on the inner side of the upper end of the buffer tank body, and a centrifugal structure is provided on the inner side of the lower end of the buffer tank body, located at the end of the buffer chamber away from the isolation cavity. The advantages are: the coalescing structure actively breaks up micron-sized bubbles in the liquid and induces them to merge into larger, more easily floating bubbles, greatly accelerating the gas-liquid separation process, resulting in more thorough degassing, and effectively removing microbubbles that are difficult to separate using traditional methods.

Description

Technical Field

[0001] This utility model belongs to the technical field of degassing buffer tank equipment, specifically relating to a high-pressure degassing buffer tank. Background Technology

[0002] In large-scale preparative liquid systems, especially high-flow-rate, high-pressure preparative liquid systems, the removal of microbubbles presents technical constraints. Traditional tanks mainly rely on passive settling. For bubbles that are small in size and have low buoyancy, their rising speed is extremely slow, making it difficult to effectively separate them within the limited tank volume and fluid residence time. The residual microbubbles will enter the system with the liquid and continue to cause harm. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a high-pressure degassing buffer tank.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure degassing buffer tank, comprising a buffer tank body with a buffer cavity, an inlet at the lower end of the buffer tank body and an outlet on one side of the lower end of the buffer tank body, the buffer cavity being connected to both the inlet and the outlet, an isolation chamber with an isolation cavity connected to the upper end of the buffer tank body, the isolation chamber and the buffer cavity being connected by a connecting channel, and an exhaust port being provided at the end of the isolation chamber away from the buffer tank body, a double-sealed exhaust mechanism being provided between the buffer tank body and the isolation chamber, a coalescence structure located near the isolation cavity and connected to the inlet on the inner side of the upper end of the buffer tank body, and a centrifugal structure located away from the isolation cavity on the inner side of the lower end of the buffer tank body. The system efficiently generates and refines bubbles through a coalescing structure, utilizes the narrow space of the buffer chamber to create favorable conditions for bubble floating, employs a centrifugal structure to further remove residual bubbles and impurities, and finally safely and automatically discharges the separated gas through a double-sealed exhaust mechanism. The entire system has a compact structure, precise design parameters, a high degree of automation, and excellent safety and degassing efficiency.

[0005] In the aforementioned high-pressure degassing buffer tank, the dual-sealed exhaust mechanism includes a first exhaust assembly and a second exhaust assembly.

[0006] In the aforementioned high-pressure degassing buffer tank, the first exhaust assembly includes a first sensor disposed on the inner side of the buffer chamber near the isolation chamber, and the first sensor is connected to a first switching valve located in the connection channel.

[0007] In the aforementioned high-pressure degassing buffer tank, the second exhaust assembly includes a second sensor disposed within an isolation chamber, which is connected to a second switching valve located within the exhaust port. Through the cooperation of the sensor and the switching valve, automated and precise exhaust control is achieved without manual intervention. It can respond promptly to changes in the gas-liquid interface within the tank. Furthermore, by placing the exhaust function within the isolation chamber and controlling it through the valve, pressure fluctuations within the buffer chamber and direct liquid impact on the exhaust port are effectively prevented, ensuring the stability and reliability of the exhaust process.

[0008] In the aforementioned high-pressure degassing buffer tank, the coalescing structure includes a distributor. A liquid inlet is connected to the inner circumference of the lower end of the distributor, and the liquid inlet is connected to the liquid inlet via an inlet rod. Several circular through-holes are arranged in a hexagonal pattern along the center of the distributor, with the circular through-holes arranged vertically and having a chamfered inlet at the top. A sintered metal sieve plate with several perforations corresponding to the circular through-holes is also provided at the lower end of the distributor. The design of the distributor and the circular through-holes disperses the liquid into fine streams, thereby promoting the precipitation of dissolved liquid in the form of microbubbles. The hexagonal distribution ensures uniform flow, while the sintered metal sieve plate and its perforations trap microbubbles, coalesce them into large bubbles within the pores, and then release them, greatly enhancing the degassing efficiency.

[0009] In the aforementioned high-pressure degassing buffer tank, the centrifugal structure includes a centrifugal fan located at the lower end of the buffer chamber and on the outer circumferential side of the inlet rod. The centrifugal fan is positioned above the outlet, and a liquid flow channel exists between the outer circumferential side of the centrifugal fan and the inner wall of the buffer tank. The centrifugal force generated by the rotation of the centrifugal fan throws residual, unfloated microbubbles and solid impurities in the liquid toward the tank wall, separating them from the main liquid. Simultaneously, the centrifugal fan speed is adjustable, maintaining a centrifugal force of 800-1200g within the buffer chamber to accelerate bubble separation.

[0010] In the aforementioned high-pressure degassing buffer tank, the diameter of the buffer chamber is equal to the diameter of the isolation chamber, and the height of the buffer chamber is greater than the height of the isolation chamber. The design of the buffer chamber height ensures sufficient liquid residence time and gas separation space.

[0011] In the aforementioned high-pressure degassing buffer tank, the diameter of the buffer tank is 20 cm, the height of the buffer tank is 70 cm, and the volume of the buffer tank is 21 L. The volume of the buffer tank needs to ensure that the mobile phase remains in the buffer tank for at least 2 minutes to achieve bubble removal.

[0012] In the aforementioned high-pressure degassing buffer tank, the distributor has a diameter of 15cm, the circular through hole has a diameter of 0.5mm, and the circular through hole has a depth of 0.5mm.

[0013] In the aforementioned high-pressure degassing buffer tank, the chamfer angle of the inlet chamfer is 90°, and the aperture of the sieve holes is 20-100μm.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. The device adopts a coalescing structure, which actively breaks up micron-sized bubbles in the liquid and induces them to merge into larger bubbles that are easier to float. This greatly accelerates the gas-liquid separation process, degassing is more thorough, and it can effectively remove tiny bubbles that are difficult to separate using traditional methods.

[0015] 2. The device adopts a dual-sealed exhaust mechanism. The first switch valve is controlled by the first sensor, and the second switch valve is controlled by the second sensor to release the gas in the isolation chamber, ensuring the stability and safety of gas emission.

[0016] 3. The centrifugal structure at the bottom of the device prevents the formation of the outlet vortex, thus avoiding the risk of separated gas being re-entrained into the output liquid. This ensures that the liquid flowing out of the outlet is pure, and the output quality is stable and reliable.

[0017] 4. The buffer chamber of this device is much taller than the isolation chamber, providing sufficient effective volume for gas-liquid separation. At the same time, the isolation chamber only serves as a gas collection and exhaust channel, resulting in a compact structure and efficient space utilization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the aggregated structure in this utility model.

[0020] Figure 3 This is a schematic diagram of the distributor in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the metal sintered sieve plate in this utility model.

[0022] In the figure: Buffer tank 1, Buffer chamber 11, Liquid inlet 12, Liquid outlet 13, Isolation chamber 2, Isolation chamber 21, Exhaust port 22, Connecting channel 3, Double-sealed exhaust mechanism 4, First sensor 41, First switching valve 42, Second sensor 43, Second switching valve 44, Aggregating structure 5, Distributor 51, Liquid inlet 52, Liquid inlet rod 53, Circular through hole 54, Inlet chamfered part 55, Metal sintered sieve plate 56, Sieve hole 57, Centrifugal structure 6, Centrifugal fan 61. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1-4 As shown, a high-pressure degassing buffer tank includes a buffer tank body 1 with a buffer cavity 11. A liquid inlet 12 is provided at the lower end of the buffer tank body 1, and a liquid outlet 13 is provided on one side of the lower end of the buffer tank body 1. The buffer cavity 11 is connected to both the liquid inlet 12 and the liquid outlet 13. An isolation chamber 2 with an isolation cavity 21 is connected to the upper end of the buffer tank body 1. The isolation cavity 21 and the buffer cavity 11 are connected by a connecting channel 3. An exhaust port 22 is provided at the end of the isolation chamber 2 away from the buffer tank body 1. A double-sealed exhaust mechanism 4 is provided between the buffer tank body 1 and the isolation chamber 2. A coalescing structure 5 is provided on the inner side of the upper end of the buffer tank body 1, located at the end of the buffer cavity 11 near the isolation cavity 21 and connected to the liquid inlet 12. A centrifugal structure 6 is provided on the inner side of the lower end of the buffer tank body 1, located at the end of the buffer cavity 11 away from the isolation cavity 21. The system efficiently generates and refines bubbles through the aggregation structure 5, creates favorable conditions for bubble floating by utilizing the slender space of the buffer chamber 11, further removes residual bubbles and impurities by the centrifugal structure 6, and finally safely and automatically discharges the separated gas through the double-sealed exhaust mechanism 4. The entire system has a compact structure, precise design parameters, high degree of automation, and excellent safety and degassing efficiency.

[0025] like Figure 1 As shown, the dual-sealed exhaust mechanism 4 includes a first exhaust assembly and a second exhaust assembly.

[0026] The first exhaust assembly includes a first sensor 41 disposed on the inner side of the buffer chamber 11 near the isolation chamber 21, and the first sensor 41 is connected to a first switching valve 42 located in the connection channel 3.

[0027] Specifically, the second exhaust assembly includes a second sensor 43 disposed within the isolation chamber 21, which is connected to a second switching valve 44 located within the exhaust port 22. Through the cooperation of the sensor and the switching valve, automated and precise exhaust control is achieved without manual intervention. It can respond promptly to changes in the gas-liquid interface within the tank. Furthermore, by placing the exhaust function within the isolation chamber 21 and controlling it through the valve, pressure fluctuations within the buffer chamber 11 and direct liquid impact on the exhaust port 22 are effectively prevented, ensuring the stability and reliability of the exhaust process.

[0028] Combination Figures 1-4As shown, the aggregation structure 5 includes a distributor 51. A liquid inlet 52 is connected to the inner circumference of the lower end of the distributor 51. The liquid inlet 52 is connected to the liquid inlet 12 via a liquid inlet rod 53. Several circular through holes 54 are arranged in a hexagonal pattern along the center of the distributor 51, with the circular through holes 54 arranged vertically and having a chamfered inlet 55 at the top. A sintered metal sieve plate 56, corresponding to the circular through holes 54 and having several sieve holes 57, is located at the lower end of the distributor 51. The design of the distributor 51 and the circular through holes 54 disperses the liquid into fine streams, thereby promoting the precipitation of dissolved liquid in the form of microbubbles. The hexagonal distribution ensures uniform flow. Simultaneously, the sintered metal sieve plate 56 and its sieve holes 57 trap microbubbles, aggregate them in the pores to form large bubbles, and then release them, greatly enhancing the degassing efficiency.

[0029] like Figure 1 As shown, the centrifugal structure 6 includes a centrifugal fan 61 located at the lower end of the buffer chamber 11 and on the outer side of the inlet rod 53. The centrifugal fan 61 is located above the outlet 13, and there is a liquid flow channel between the outer side of the centrifugal fan 61 and the inner wall of the buffer tank 1. The centrifugal force generated by the rotation of the centrifugal fan 61 can throw residual, unfloated microbubbles and solid impurities in the liquid toward the tank wall, separating them from the main liquid. At the same time, the speed of the centrifugal fan 61 is adjustable, maintaining a centrifugal force of 800-1200g in the buffer chamber 11 to accelerate bubble separation.

[0030] The diameter of the buffer chamber 11 is equal to the diameter of the isolation chamber 21, and the height of the buffer chamber 11 is greater than the height of the isolation chamber 21. The design of the height of the buffer chamber 11 ensures sufficient liquid residence time and gas separation space.

[0031] Specifically, the buffer tank 1 has a diameter of 20 cm, a height of 70 cm, and a volume of 21 L. The volume of the buffer tank 1 needs to ensure that the mobile phase remains in the buffer tank 1 for at least 2 minutes to allow for bubble removal.

[0032] like Figure 3 As shown, the diameter of the distributor 51 is 15cm, the diameter of the circular through hole 54 is 0.5mm, and the depth of the circular through hole 54 is 0.5mm.

[0033] Combination Figure 2 and Figure 4 As shown, the chamfer angle of the inlet chamfer 55 is 90°, and the aperture of the sieve 57 is 20-100μm.

[0034] The principle of this embodiment is as follows: The liquid flows into the inlet section 52 of the agglomeration structure 5 through the inlet rod 53, and finally enters the distributor 51. The distributor 51 enhances bubble agglomeration through two structures: first, the circumferentially outer circular through-hole 54 guides the liquid to disperse evenly; second, the metal sintered sieve plate 56 below the circular through-hole 54 further cuts and disturbs the liquid, causing tiny bubbles to collide and merge into larger bubbles. The liquid flows through the centrifugal fan 61 located at the lower end of the buffer chamber 11, causing the liquid to rotate and generate centrifugal force. The denser liquid is thrown against the inner wall of the buffer tank 1 under the action of centrifugal force and flows along the liquid flow channel to the outlet 13 for discharge. The less dense gas gathers towards the center and moves upward under the influence of buoyancy, gradually entering the upper region of the buffer chamber 11. When the first sensor 41 at the top of the buffer chamber 11 does not detect liquid, the first switch valve 42 in the connecting channel 3 is opened. At this time, the second switch valve 44 in the exhaust port 22 is closed, and the gas enters the isolation chamber 21 from the buffer chamber 11. When the first sensor 41 at the top of the buffer chamber 11 detects liquid and the second sensor 43 in the isolation chamber 21 detects gas, the first switch valve 42 is closed and the second switch valve 44 is opened, releasing the gas in the isolation chamber 21 into the atmosphere.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as buffer tank 1, buffer chamber 11, inlet 12, outlet 13, isolation chamber 2, isolation cavity 21, exhaust port 22, connecting channel 3, double-sealed exhaust mechanism 4, first sensor 41, first switching valve 42, second sensor 43, second switching valve 44, aggregation structure 5, distributor 51, inlet section 52, inlet rod 53, circular through hole 54, inlet chamfered section 55, sintered metal sieve plate 56, sieve hole 57, centrifugal structure 6, and centrifugal fan 61, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A high-pressure degassing buffer tank, comprising a buffer tank body (1) having buffer chambers (11), an inlet (12) at the lower end of the buffer tank body (1) and an outlet (13) on one side of the lower end of the buffer tank body (1), wherein the buffer chamber (11) is connected to both the inlet (12) and the outlet (13), characterized in that, The upper end of the buffer tank (1) is connected to an isolation chamber (2) with an isolation cavity (21). The isolation cavity (21) and the buffer cavity (11) are connected by a connecting channel (3). The isolation chamber (2) is provided with an exhaust port (22) at the end away from the buffer tank (1). A double-sealed exhaust mechanism (4) is provided between the buffer tank (1) and the isolation chamber (2). The inner side of the upper end of the buffer tank (1) is provided with a coalescence structure (5) located at the end of the buffer cavity (11) near the isolation cavity (21) and connected to the liquid inlet (12). The inner side of the lower end of the buffer tank (1) is provided with a centrifugal structure (6) located at the end of the buffer cavity (11) away from the isolation cavity (21).

2. The high-pressure degassing buffer tank according to claim 1, characterized in that, The dual-sealed exhaust mechanism (4) includes a first exhaust assembly and a second exhaust assembly.

3. A high-pressure degassing buffer tank according to claim 2, characterized in that, The first exhaust assembly includes a first sensor (41) disposed on the inner side of the buffer chamber (11) near the isolation chamber (21), and the first sensor (41) is connected to a first switching valve (42) located in the connection channel (3).

4. A high-pressure degassing buffer tank according to claim 2, characterized in that, The second exhaust assembly includes a second sensor (43) disposed in the isolation chamber (21), and the second sensor (43) is connected to a second switching valve (44) located in the exhaust port (22).

5. A high-pressure degassing buffer tank according to claim 1, 2, 3, or 4, characterized in that, The aggregation structure (5) includes a distributor (51), and a liquid inlet (52) is connected to the lower circumferential inner side of the distributor (51). The liquid inlet (52) is connected to the liquid inlet (12) through the liquid inlet rod (53). The lower circumferential outer side of the distributor (51) is provided with a number of circular through holes (54) arranged in a hexagonal pattern along the center of the distributor (51). The circular through holes (54) are arranged vertically and have an inlet chamfer (55) at the upper end. The lower end of the distributor (51) is provided with a metal sintered sieve plate (56) corresponding to the circular through holes (54) and having a number of sieve holes (57).

6. A high-pressure degassing buffer tank according to claim 5, characterized in that, The centrifugal structure (6) includes a centrifugal fan (61) located at the lower end of the buffer chamber (11) and on the outer side of the inlet rod (53). The centrifugal fan (61) is located above the outlet (13), and there is a liquid flow channel between the outer side of the centrifugal fan (61) and the inner wall of the buffer tank (1).

7. A high-pressure degassing buffer tank according to claim 1, characterized in that, The diameter of the buffer cavity (11) is equal to the diameter of the isolation cavity (21), and the height of the buffer cavity (11) is greater than the height of the isolation cavity (21).

8. A high-pressure degassing buffer tank according to claim 1, characterized in that, The buffer tank (1) has a diameter of 20cm, a height of 70cm, and a volume of 21L.

9. A high-pressure degassing buffer tank according to claim 5, characterized in that, The distributor (51) has a diameter of 15cm, the circular through hole (54) has a diameter of 0.5mm, and the circular through hole (54) has a depth of 0.5mm.

10. A high-pressure degassing buffer tank according to claim 5, characterized in that, The chamfer angle of the inlet chamfer (55) is 90°, and the aperture of the sieve (57) is 20-100μm.

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