Spiral-flow type corrugated plate-silk screen type gas-liquid separator

Abstract

The utility model relates to a spiral-flow type corrugated plate-silk screen type gas-liquid separator and a method, and belongs to the technical field of gas-liquid separation. Comprising a gas-liquid inlet, a separator cylinder, a corrugated plate, a baffle, a silk screen separator and a gas outlet, the gas-liquid inlet is formed in the upper end of the separator cylinder, the baffle, the silk screen separator and the upper end of the gas outlet which are sequentially connected from top to bottom are arranged on the lower portion of an inner cavity of the separator cylinder, and the lower end of the gas outlet extends out of the bottom of the separator cylinder. Corrugated plates are arranged on the upper portion of an inner cavity of the separator barrel and evenly arranged in the circumferential direction to form a corrugated plate set, and the middle of the corrugated plate set is higher than the edge. The corrugated plates are reasonable in layout and ingenious in structure, the corrugated plates in the gas-liquid separator are spirally arranged, so that separated liquid drops are timely discharged out of a corrugated plate channel under the action of gravity and inertia force, the pressure drop of airflow can be effectively reduced through the arrangement of the corrugated plates, and therefore the purpose of reducing energy consumption is achieved; and the captured liquid drops can flow to the cylinder wall and converge at the bottom.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas-liquid separators, belong to gas-liquid separation technical field. BACKGROUND

[0002] Gas-liquid separator is a kind of separating device that liquid droplets mixed in gas flow are separated out.Gas-liquid separator is widely used in petroleum, chemical industry, diesel hydrogenation tail gas recovery, natural gas exploitation, storage and transportation and deep processing, flue gas waste heat utilization, wet desulfurization, wet dust removal and fermentation engineering process.Wave-plate separator is widely used in actual industrial production by virtue of its production convenience, high gas-liquid separation efficiency, small floor area and other characteristics.Wave-plate gas-liquid separator is usually composed of multiple wave-plates, and gas flow with liquid droplets is made to flow in the zigzag channel formed by multiple wave-plates.Due to the effect of inertia, the movement direction of liquid droplets is difficult to change with the change of the movement direction of gas flow.Under the effect of inertia, liquid droplets finally deviate from the movement trajectory of gas flow and collide on the wall of wave-plate, and finally form liquid film on wave-plate and are discharged through water collection channel.Silk screen gas-liquid separator is a kind of high-efficiency gas-liquid separating device, mainly used for separating liquid droplets with a diameter greater than 5 μm in gas.When liquid droplets pass through filter layer with gas flow, filter layer silk screen grid hinders the advance of gas flow, so that gas flow changes movement speed and direction infinitely to bypass silk screen, and these changes cause liquid droplets to impact filter layer silk screen, gravity to settle, interception, Brownian diffusion, electrostatic attraction and other effects, so that liquid droplets are separated and collected.

[0003] However, wave-plate gas-liquid separator also has its own disadvantages.When the number of wave-plates reaches a certain degree, gas flow may not reach the wave-plate channel far from the gas inlet, causing redundant structure;and liquid droplets separated from gas flow and captured by wall can only flow out of wave-plate under the action of gravity, and if wave-plate is arranged unreasonably, liquid droplets may not flow out of wave-plate in time and finally separate from liquid film or break under the action of gas flow, resulting in the decrease of separation efficiency;after liquid droplets flow out along the wall, if liquid droplets are accumulated in water collection pool for a long time, liquid droplets may be mixed with gas flow again after evaporation, resulting in the decrease of separation efficiency.

[0004] Therefore, it is urgent to provide a cyclone wave-plate-silk screen gas-liquid separator to solve the above technical problems. SUMMARY

[0005] To solve the above problems, a cyclone wave-plate-silk screen gas-liquid separator is provided, and a brief overview of the utility model is given in the following to provide a basic understanding of some aspects of the utility model.It should be understood that this overview is not an exhaustive overview of the utility model.It is not intended to determine the key or important parts of the utility model, nor to limit the scope of the utility model.

[0006] The technical scheme of the utility model discloses

[0007] A cyclone type corrugated plate-silk screen type gas-liquid separator, including gas-liquid inlet, separator cylinder, corrugated plate, baffle, silk screen separator and gas outlet, the upper end of separator cylinder is provided with gas-liquid inlet, the lower part of separator cylinder inner chamber is provided with the baffle, silk screen separator, gas outlet upper end that connect in turn from top to bottom, the lower end of gas outlet stretches out from the bottom of separator cylinder, the upper part of separator cylinder inner chamber is provided with corrugated plate, a plurality of corrugated plates are evenly arranged to form corrugated plate group in the circumference, and the middle part of corrugated plate group is higher than the edge.

[0008] Preferably, it further comprises a central fixing member, the central fixing member is cylindrical, the upper part of the cylindrical is provided with a hemispherical top cover, one end of the corrugated plate is connected with the central fixing member, the other end of the corrugated plate is connected with the inner wall of the cylindrical separator cylinder, the vertical length of the central fixing member is greater than the vertical length of the corrugated plate, and the gas-liquid inlet, the separator cylinder, the central fixing member, the baffle, the silk screen separator and the gas outlet of the cylindrical are coaxially arranged.

[0009] Preferably, the angle between the corrugated plate and the horizontal direction is α=5°-7°, and the angle between the corrugated plate and the central axis is β=20°-30°.

[0010] Preferably, the corrugated plate comprises a first fin, a main plate and a second fin, the main plate is a zigzag corrugated plate, the first fin is arranged at the wave trough of the zigzag corrugated plate and opens upwards, the second fin is arranged at the wave crest of the zigzag corrugated plate and opens upwards, the first fin and the second fin are both L-shaped fold line type plates, a zigzag channel is formed between adjacent corrugated plates, and the opening is parallel to the channel at the corresponding position.

[0011] Preferably, a first gas hole is formed on the upper side of the first wave crest of the front surface of the first wave trough of one main plate, and a second gas hole is formed on the lower side of the first wave trough of the back surface of the other main plate.

[0012] Preferably, the bottom of the cylinder comprises a circular ring type plate and a reducing pipe, the inner side of the circular ring type plate is connected with the bottom of the reducing pipe, the outer side of the circular ring type plate is connected with the bottom end of the cylinder, and the reducing pipe, the circular ring type plate and the cylinder are sequentially connected to form a water collecting pool.

[0013] Preferably, the bottom of the cylinder is a reducing pipe, and the reducing pipe is connected with the bottom end of the separator cylinder to form a water collecting pool.

[0014] Preferably, the reducing pipe arranged at the lower part of the inner chamber of the separator cylinder is a circular pipe that is narrow at the upper part and wide at the lower part, the upper part of the reducing pipe is connected with the middle part of the gas outlet, the upper part of the reducing pipe is coaxially arranged with the gas outlet, the middle part of the inner chamber of the separator cylinder is a separation space, and the upper part of the inner chamber of the separator cylinder is an inlet space.

[0015] Preferably, the wire mesh separator is a circular pipe with a wide upper part and a narrow lower part, the upper and lower ends of the wire mesh separator are respectively provided with a baffle and a gas outlet, the diameter of the baffle is greater than or equal to the diameter of the upper part of the wire mesh separator, the diameter of the baffle is greater than the diameter of the upper part of the reducing pipe, and the diameter of the baffle is less than the diameter of the lower part of the reducing pipe.

[0016] Preferably, the wire mesh separator is a circular pipe with a wide upper part and a narrow lower part, the upper and lower ends of the wire mesh separator are respectively provided with a baffle and a gas outlet, the diameter of the baffle is greater than or equal to the diameter of the upper part of the wire mesh separator, the diameter of the baffle is greater than the diameter of the upper part of the reducing pipe, and the diameter of the baffle is less than the diameter of the lower part of the reducing pipe.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] The corrugated plate is arranged spirally in the gas-liquid separator, liquid droplets separated are discharged from the corrugated plate channel in time under the action of gravity and inertial force, the corrugated plate can effectively reduce the pressure drop of airflow, thereby achieving the purpose of reducing energy consumption, and the separated liquid droplets flow to the cylinder wall and gather at the bottom.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] The sawtooth / line corrugated plate is advantageous in separating gas and liquid droplets with large density difference rapidly by inertia, simple in process and advantageous in cost control. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an internal structure schematic diagram of a cyclone type corrugated plate-wire mesh type gas-liquid separator.

[0022] Figure 2 It is a structure schematic diagram of a corrugated plate.

[0023] Figure 3 It is a structure diagram of a second gas hole.

[0024] Figure 4 It is a structure diagram of a corrugated plate group.

[0025] Figure 5 It is an installation schematic diagram of a corrugated plate.

[0026] Figure 6 is a front view of a cyclone type corrugated plate-silk screen type gas-liquid separator.

[0027] In the figure: 1 - blowdown, 2 - manhole, 3 - gas-liquid inlet, 4 - inlet space pressure measuring hole, 5 - upper liquid level gauge port, 6 - lower liquid level gauge port, 7 - separator cylinder, 8 - center fixing part, 9 - corrugated plate, 10 - baffle, 11 - silk screen separator, 12 - separation space pressure measuring hole, 13 - sump, 14 - gas outlet, 15 - overflow port, 71 - circular ring type plate, 72 - reducing pipe, 91 - first fin, 92 - main plate, 93 - second fin. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will describe the utility model through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and not to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0029] Specific embodiment one: combined Figures 1-6 In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will describe the utility model through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and not to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0030] It also includes a center fixing part 8, the center fixing part 8 is a cylinder, the upper part of the cylinder has a hemispherical top cover, which is beneficial to the uniform dispersion of gas-liquid and prevents liquid droplets from accumulating, one end of the corrugated plate 9 is connected with the center fixing part 8, the other end of the corrugated plate 9 is connected with the inner wall of the cylindrical separator cylinder 7, the vertical length of the center fixing part 8 is greater than the vertical length of the corrugated plate 9, the gas-liquid inlet 3, the separator cylinder 7, the center fixing part 8, the baffle 10, the silk screen separator 11 and the gas outlet 14 are coaxially arranged.

[0031] The angle between the corrugated plate 9 and the horizontal direction is alpha=5-7 degrees, the angle between the corrugated plate 9 and the center axis is beta=20-30 degrees, the optimal parameters are alpha=5 degrees and beta=20 degrees, the corrugated plate group with the middle part being high and the edges and the bottom being low is formed, and the inclined arrangement is favorable for increasing the collision wall surface and improving the utilization rate of each corrugated plate 9, so that the number of the corrugated plates used is reduced; in order to make the liquid drops discharged from the corrugated plate channel in time after being captured, the corrugated plates in the gas-liquid separator are spirally arranged, the separated liquid drops are discharged from the corrugated plate channel under the action of gravity and inertial force in time, the gas is bent at the wall surface of the separator cylinder 7, and the separation efficiency can be further improved; through calculation, it is found that when the airflow direction and the blade (corrugated plate) direction form a certain angle, the separation efficiency can be ensured, the pressure drop of the airflow can be effectively reduced, and the purpose of reducing energy consumption is achieved, each wave node forms an angle of 5 degrees with the horizontal direction, and the connection position of the wave node and the center cylinder is higher than the connection position of the wave node and the cylinder, so that the captured liquid drops flow to the cylinder wall and converge at the bottom;

[0032] The corrugated plate 9 comprises a first fin 91, a main plate 92 and a second fin 93, the main plate 92 is a zigzag corrugated plate, the second fin 93 is arranged at the wave crest of the zigzag corrugated plate and opens upwards, the first fin 91 is arranged at the wave trough of the zigzag corrugated plate and opens upwards, the first fin 91 and the second fin 93 are both L-shaped fold line type plates, the adjacent corrugated plates 9 form a zigzag channel, the openings are parallel to the corresponding channels, the zigzag / fold line type corrugated plate 9 is adopted, which is favorable for separating the gas and the liquid drops with large density difference by using inertia, the process is simple, and the cost is favorable to control;

[0033] A first gas hole 921 is formed on the upside of the first wave trough of the front surface of one main plate 92, a second gas hole 922 is formed on the downside of the first wave trough of the back surface of the adjacent other main plate 92, the first gas hole 921 and the second gas hole 922 are alternately arranged, and the first gas hole 921 and the second gas hole 922 are both through holes; through calculation, it is found that the particles will gather at the first wave node of the corrugated plate and form a liquid film, the generation of the liquid film will reduce the separation efficiency of the corrugated plate, therefore, the holes are formed on the upper and lower plates of the first wave node, the liquid film will flow to the back surface of the corrugated plate under the action of the gas phase, so that the thickness of the liquid film is reduced and the separation efficiency is improved, the zigzag / fold line type corrugated plate 9 is suitable for large flow and high flow speed, and the accumulation and blockage problem caused by flow disorder is solved;

[0034] The bottom of the cylinder 7 comprises a circular ring type plate 71 and a reducing pipe 72, the inside of the circular ring type plate 71 is connected with the bottom of the reducing pipe 72, the outside of the circular ring type plate 71 is connected with the bottom end of the cylinder 7, and the reducing pipe 72, the circular ring type plate 71 and the cylinder 7 are sequentially connected to form a water collecting pool 13;

[0035] Or the bottom of the barrel 7 is a variable diameter pipe 72, which is connected with the bottom end of the separator barrel 7 to form a sump 13;

[0036] The variable diameter pipe 72 arranged in the lower part of the inner cavity of the separator barrel 7 is a circular pipe with narrow upper part and wide lower part, the upper part of the variable diameter pipe 72 is connected with the middle part of the gas outlet 14, and the upper part of the variable diameter pipe 72 is coaxially arranged with the gas outlet 14, the middle part of the inner cavity of the separator barrel 7 (between the corrugated plate and the baffle) is a separation space, the upper part of the inner cavity of the separator barrel 7 (between the corrugated plate and the gas-liquid inlet) is an inlet space, and the design of the variable diameter pipe 72 is beneficial to the attachment and confluence of liquid droplets;

[0037] The wire mesh separator 11 is a variable diameter pipe type circular pipe with wide upper part and narrow lower part, the upper and lower ends of the wire mesh separator 11 are respectively provided with a baffle 10 and a gas outlet 14, the diameter of the baffle 10 is greater than or equal to the diameter of the upper part of the wire mesh separator 11, the diameter of the baffle 10 is greater than the diameter of the upper part of the variable diameter pipe 72, and the diameter of the baffle 10 is less than the diameter of the lower part of the variable diameter pipe 72; the wire mesh separator 11 is arranged around the gas flow outlet, so that the separation efficiency is further improved;

[0038] It also includes a blowdown port 1, a manhole 2, an inlet space pressure measuring hole 4, an upper liquid level meter port 5, a lower liquid level meter port 6, a separation space pressure measuring hole 12 and an overflow port 15, the bottom end of the separator barrel 7 is provided with the blowdown port 1, a blowdown valve is arranged at the blowdown port 1, the lower part of the separator barrel 7 is sequentially provided from top to bottom with the overflow port 15, the upper liquid level meter port 5 and the lower liquid level meter port 6, an overflow valve is arranged at the overflow port 15, liquid level meters are arranged at the upper liquid level meter port 5 and the lower liquid level meter port 6, the blowdown port 1, the overflow port 15, the upper liquid level meter port 5 and the lower liquid level meter port 6 are all in communication with the sump 13, the middle part of the separator barrel 7 is provided with the manhole 2 and the separation space pressure measuring hole 12, the separation space pressure measuring hole 12 is in communication with the separation space, the upper part of the separator barrel 7 is provided with the inlet space pressure measuring hole 4, the inlet space pressure measuring hole 4 is in communication with the inlet space, and pressure sensors are arranged at the separation space pressure measuring hole 12 and the inlet space pressure measuring hole 4; the liquid level meter upper hole 5 is used for installing a liquid level meter to detect the liquid level height and prevent the liquid level height from being too high to affect the separation efficiency of the equipment;

[0039] The gas flow containing liquid droplets enters the device from the gas-liquid inlet 3. When the gas flow passes through the tortuous channel formed between the corrugated plates 9, the movement direction of the liquid droplets is difficult to change with the change of the movement direction of the gas flow due to the effect of inertia. The slope β causes the gas to become a cyclone through the corrugated plates 9, and the liquid droplets are separated from the movement track of the gas flow and collide on the wall surface of the corrugated plates 9 including the main plate and the fin wall surface under the action of centrifugal force, and are collected on the wall surface of the inner cavity of the separator cylinder 7 along the slope α of the first fin 91 and the second fin 93 of the corrugated plate 9. The arrangement of the slope α not only solves the problem of water accumulation of the fin from top to bottom when the gas-liquid separation is performed, but also makes the separated gas-liquid no longer mixed again due to convection, greatly improving the separation efficiency. Under the action of gravity, the water droplets are collected in the water collecting pool 13 along the wall surface of the separator cylinder 7 through the baffle 10, and finally discharged from the separator through the drain outlet 1. In the process of falling of the water droplets, the surface tension causes the water droplets to closely adhere to the wall surface, forming a stable contact interface, so that the water droplets no longer mix with the gas flow. At the same time, the water droplets on the wall surface are acted on by the gravity and the gas flow formed by the downward dry gas, which accelerates the falling speed of the water droplets and improves the separation efficiency. The dry gas enters the middle part of the separator cylinder 7 after being filtered through the corrugated plate 9, passes through the narrow gap between the baffle 10 and the separator cylinder 7, so that the gas flow velocity is enhanced, and the liquid droplets on the wire mesh separator 11 are impacted, so that they are quickly separated from the wire mesh separator 11. At the same time, the design of the wire mesh separator 11 also prevents the accumulation of liquid droplets, which is beneficial to the flow of liquid droplets into the water collecting pool 13 under the action of gravity. The gas is filtered through the wire mesh separator 11, and finally the dry gas subjected to twice liquid droplet separation treatment is obtained through the gas outlet 14. The baffle 10 not only divides the inner part of the separator cylinder 7 into a separation space and a water collecting pool 13, prevents the collected liquid droplets in the water collecting pool 13 from evaporating and then entering the dry gas passage 7 to affect the separation efficiency, but also changes the gas flow direction. At the same time, the baffle 10 is additionally arranged at the upper end of the gas outlet 14 to prevent the liquid droplets from affecting the separation efficiency.

[0040] The separation efficiency of the liquid droplets is calculated by the ratio of the mass of the liquid droplets at the inlet and the outlet. The specific formula is as follows:

[0041]

[0042] In the formula, η is the separation efficiency of the separator, %; m e is the mass flow rate of the liquid droplets at the inlet; m l is the mass flow rate of the liquid droplets at the outlet; w i η i is the separation efficiency of the liquid droplets with a certain diameter.

[0043] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, the technical solutions can be arranged and combined, and a person skilled in the art can exhaust all possibilities according to the mathematical knowledge of arrangement and combination, so the technical solutions after arrangement and combination will not be described one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the utility model.

[0044] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cyclone corrugated plate-scrim gas-liquid separator characterized by: The gas-liquid separator comprises a gas-liquid inlet (3), a separator cylinder (7), corrugated plates (9), baffles (10), a wire mesh separator (11) and a gas outlet (14), the upper end of the separator cylinder (7) is provided with the gas-liquid inlet (3), the lower part of the inner cavity of the separator cylinder (7) is provided with the baffles (10), the wire mesh separator (11) and the upper end of the gas outlet (14) which are sequentially connected from top to bottom, the lower end of the gas outlet (14) extends from the bottom of the separator cylinder (7), the upper part of the inner cavity of the separator cylinder (7) is provided with the corrugated plates (9), a plurality of the corrugated plates (9) are uniformly arranged in the circumferential direction to form a corrugated plate group, and the middle part of the corrugated plate group is higher than the edge.

2. A cyclone-ripple plate-silk screen gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator further comprises a central fixing member (8), the central fixing member (8) is in a cylindrical shape, the upper part of the cylindrical shape has a hemispherical top cover, one end of the corrugated plate (9) is connected with the central fixing member (8), the other end of the corrugated plate (9) is connected with the inner wall of the cylindrical separator cylinder (7), and the gas-liquid inlet (3), the separator cylinder (7), the central fixing member (8), the baffle (10) in the form of a circular plate, the wire mesh separator (11) and the gas outlet (14) in the form of a circular pipe are coaxially arranged.

3. A cyclone-ripple plate-silk screen gas-liquid separator according to claim 2, characterized in that: The angle between the corrugated plate (9) and the horizontal direction is α=5°-7°, and the angle between the corrugated plate (9) and the central axis is β=20°-30°.

4. A cyclone-ripple plate-silk screen gas-liquid separator according to claim 3, characterized in that: The corrugated plate (9) comprises first fins (91), a main plate (92) and second fins (93), the main plate (92) is a zigzag corrugated plate, the second fins (93) are arranged at the wave crests of the zigzag corrugated plate, the first fins (91) are arranged at the wave troughs of the zigzag corrugated plate, and the first fins (91) and the second fins (93) are both in the form of L-shaped folded lines.

5. A cyclone-ripple plate-gauze gas-liquid separator according to claim 4, characterized in that: The front surface of the first wave node of one main plate (92) is processed with a first gas hole (921), and the back surface of the first wave node of another adjacent main plate (92) is processed with a second gas hole (922).

6. A cyclone-ripple plate-gauze gas-liquid separator according to claim 5, characterized in that: The bottom of the cylinder (7) comprises a circular ring plate (71) and a reducing pipe (72), the inner side of the circular ring plate (71) is connected with the bottom of the reducing pipe (72), the outer side of the circular ring plate (71) is connected with the bottom end of the cylinder (7), and the reducing pipe (72), the circular ring plate (71) and the cylinder (7) are sequentially connected to form a water collecting pool (13).

7. A cyclone- corrugated plate- wire mesh gas-liquid separator according to claim 5, characterized in that: The bottom of the cylinder (7) is a reducing pipe (72), the reducing pipe (72) is connected with the bottom end of the separator cylinder (7) to form a water collecting pool (13).

8. A cyclone-ripple plate-silk screen gas-liquid separator according to claim 6 or 7, characterized in that: The reducing pipe (72) arranged in the lower part of the inner cavity of the separator cylinder (7) is a circular pipe which is narrow at the upper part and wide at the lower part, the upper part of the reducing pipe (72) is connected with the middle part of the gas outlet (14), and the upper part of the reducing pipe (72) is coaxially arranged with the gas outlet (14).

9. A cyclone-ripple plate-gauze gas-liquid separator according to claim 8, characterized in that: The wire mesh separator (11) is a circular pipe which is wide at the upper part and narrow at the lower part, the upper end and the lower end of the wire mesh separator (11) are respectively provided with the baffle (10) and the gas outlet (14), the diameter of the baffle (10) is greater than or equal to the diameter of the upper part of the wire mesh separator (11), the diameter of the baffle (10) is greater than the diameter of the upper part of the reducing pipe (72), and the diameter of the baffle (10) is smaller than the diameter of the lower part of the reducing pipe (72).

10. A cyclone- corrugated plate - wire mesh gas-liquid separator according to claim 9, characterized in that: The separator cylinder (7) further comprises a sewage outlet (1), a manhole (2), an inlet space pressure measuring hole (4), an upper liquid level gauge port (5), a lower liquid level gauge port (6), a separation space pressure measuring hole (12) and an overflow port (15). The bottom end of the separator cylinder (7) is provided with a sewage outlet (1), a sewage outlet (1) is provided with a sewage valve, and the lower part of the separator cylinder (7) is provided with an overflow port (15), an upper liquid level gauge port (5), and a lower liquid level gauge port (6) in sequence from top to bottom. The overflow port (15) is provided with an overflow valve, an upper liquid level gauge port (5), a lower liquid level gauge port ( 6) are provided with liquid level gauges, the sewage outlet (1), the overflow outlet (15), the upper liquid level gauge outlet (5), and the lower liquid level gauge outlet (6) are all connected to the water collection tank (13), a manhole (2) and a separation space pressure measuring hole (12) are provided in the middle of the separator cylinder (7), and the separation space pressure measuring hole (12) is connected to the separation space, an inlet space pressure measuring hole (4) is provided on the upper part of the separator cylinder (7), and the inlet space pressure measuring hole (4) is connected to the inlet space, and pressure sensors are provided at the separation space pressure measuring hole (12) and the inlet space pressure measuring hole (4).

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