A reflux oil control type eccentric tube two-phase separation system

Abstract

The present invention discloses a reflux oil control type eccentric tube two-phase separation system, which includes an eccentric T-shaped casing, a gas flotation drive module, a monitoring reflux structure and an inner tube self-adjustment structure. The eccentric T-shaped casing performs a dynamic separation mode with the downward drainage slit facing downwards, and a gas flotation separation mode with the downward drainage slit facing upwards. The monitoring reflux structure is used to monitor the oil content of the discharged separated water body and separated oil body, analyze the water content, and control the reflux of the separated water body and oil body. The present invention monitors the oil content of the discharged separated water body and separated oil body, analyzes the water content, drives and drives the reflux of the separated water body and separated oil body, and adjusts the direction of the downward drainage slit through the inner tube self-adjustment structure. The internal of the eccentric T-shaped casing is transformed from a dynamic separation mode to a gas flotation separation mode, and the gas flotation effect helps the unqualified sewage to be separated for the second time, and the unqualified sewage is treated to avoid waste.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-water separation, and particularly to a reflux oil-control type eccentric tube two-phase separation system. Background Art

[0002] Industries such as petrochemical industry require oil-water separation. Among them, T-shaped bifurcations are widely used in oil-water separation operations. When two fluids pass through the T-shaped intersection area, the phenomenon of uneven two-phase distribution will inevitably occur. If the degree of uneven distribution increases, the T-shaped joint is used as a two-phase separator. Traditional T-shaped joints often generate unstable liquid fluctuations during the separation process. In addition, if the two-phase operation parameters or the joint structure are not properly treated, the phenomenon of uneven two-phase distribution will occur, resulting in a significant reduction in the separation efficiency.

[0003] The prior art patent application No. 202011285221.X provides an oil-gas separation device based on a T-shaped casing form, including an overflow hole, an upper slit, a lower slit, an upper internal casing, a lower internal casing, an upper external casing, a lower external casing, a floating oil pipe, and a vertical pipe; part of the oil body directly floats to the top of the upper external casing, and the other part sinks into the lower external casing, and then returns to the upper external casing through the vertical pipe, and finally enters the floating oil pipe through the overflow hole, realizing oil-water separation and significantly improving the separation efficiency based on the dynamic separation principle and the shallow pond theory.

[0004] The oil-water separation efficiency of the prior art eccentric T-shaped casing is easily affected by the oil flow rate, water flow rate, mixed flow rate, and oil content. After the oil-water separation, the separation efficiency of the corresponding separation process is detected. If the oil content and water content of the separated oil body and water body do not meet the standards, it is impossible to timely change the corresponding compliance situation by adjusting the corresponding flow rate or others, resulting in a large amount of non-compliant water bodies and oil bodies, causing ineffective separation and waste of resources. Summary of the Invention

[0005] Therefore, the present invention provides a reflux oil-control type eccentric tube two-phase separation system, which effectively solves the problems in the prior art that the corresponding compliance situation cannot be changed in time by adjusting the corresponding flow rate or others, resulting in a large amount of non-compliant water bodies and oil bodies, causing ineffective separation and waste of resources.

[0006] To solve the above technical problems, the present invention specifically provides the following technical solutions: A reflux oil-control type eccentric tube two-phase separation system, comprising:

[0007] An eccentric T-shaped casing is provided at the output end of the sewage drainage and transportation. The eccentric T-shaped casing is used to receive sewage and provide a place for dynamic separation of the sewage, as well as a drainage pipe and an oil drainage pipe for discharging the separated sewage. A lower drainage slit is provided at the lower part inside the eccentric T-shaped casing. The eccentric T-shaped casing conducts a dynamic separation mode with the lower drainage slit facing downwards, and an air flotation separation mode with the lower drainage slit facing upwards.

[0008] An air flotation drive module is provided at the bottom of the eccentric T-shaped casing. The air flotation drive module is internally connected to the lower part of the eccentric T-shaped casing based on the air flotation separation mode and conveys gas into the lower part of the eccentric T-shaped casing to form microbubbles that combine with the oil in the sewage and float upwards.

[0009] A monitoring and reflux structure is provided on the drainage pipe and the oil drainage pipe. The monitoring and reflux structure is used to monitor the oil content of the discharged separated water body and separated oil body, analyze the water content, and drive the corresponding separated water body to flow back into the lower part of the eccentric T-shaped casing and / or drive the corresponding separated oil body to flow back into the upper part of the eccentric T-shaped casing when the water content and / or the oil content do not meet the standards.

[0010] An inner pipe self-adjusting structure is provided on the lower part of the eccentric T-shaped casing. The inner pipe self-adjusting structure is used to drive the rotation of the lower part of the pipeline inside the eccentric T-shaped casing to adjust the direction of the lower drainage slit, and the inner pipe self-adjusting structure can drive the lifting of the lower part of the pipeline inside the eccentric T-shaped casing to cooperate with the air flotation drive module for connection.

[0011] Furthermore, the eccentric T-shaped casing includes a first connecting outer pipe, a first connecting inner pipe provided inside the first connecting outer pipe, an oil floating pipe provided on the first connecting outer pipe, and an oil overflow hole provided at the connection between the oil floating pipe and the first connecting outer pipe.

[0012] The first connecting inner pipe is penetrated and provided on the first connecting outer pipe, and the inner top of the first connecting outer pipe is internally connected to the inside of the oil floating pipe through the oil overflow hole.

[0013] An upper drainage gap is provided at the bottom of the first connecting inner pipe inside the first connecting outer pipe, and the inner bottom of the first connecting inner pipe is internally connected to the inside of the first connecting outer pipe through the upper drainage gap.

[0014] The central axis of the first connecting inner pipe is located directly above the central axis of the first connecting outer pipe.

[0015] Further, a second connecting outer tube is provided at the bottom of the first connecting outer tube. A second connecting inner tube is provided inside the second connecting outer tube. At least one separating vertical tube is provided between the second connecting outer tube and the first connecting outer tube and is communicated through the separating vertical tube;

[0016] The central axis of the second connecting outer tube is directly above the central axis of the second connecting inner tube;

[0017] The lower drainage slit is provided at the bottom of the second connecting inner tube. The second connecting inner tube is communicated with the second connecting outer tube through the lower drainage slit.

[0018] Further, the oil drainage pipeline is provided at the end of the first connecting inner tube, and the water drainage pipeline is provided at the top end of the second connecting inner tube.

[0019] Further, the air flotation driving module includes an air delivery pipe embedded at the bottom end of the second connecting outer tube, a transportation pipeline provided at the end of the air delivery pipe, and an air extraction pump provided on the transportation pipeline;

[0020] The upper end of the air delivery pipe is flush with the inner wall bottom of the second connecting outer tube.

[0021] Further, a first installation groove is provided on the inner wall of the air delivery pipe. A first connecting shaft is rotatably provided in the first installation groove. The end of the first connecting shaft is connected to the inside of the first installation groove through a first torsion spring;

[0022] A first circular valve plate is provided on the first connecting shaft. A rubber edge is provided on the side of the first circular valve plate. The side of the rubber edge abuts against the air delivery pipe.

[0023] Further, an air flotation tube is provided at the top of the second connecting inner tube. Air flotation holes are provided on the side wall of the air flotation tube. A second installation groove is provided inside the air flotation tube. A second connecting shaft is rotatably provided in the second installation groove. The end of the second connecting shaft is connected to the inside of the second installation groove through a second torsion spring. A second circular valve plate is provided on the second connecting shaft. The side of the second circular valve plate abuts against the inner wall of the air flotation tube;

[0024] Chute grooves are provided on the inner walls of the air delivery pipe and the air flotation tube. A gear plate is slidably provided in the chute grooves. A sliding protrusion is provided on the side of the gear plate. The sliding protrusion is slidably provided in the chute grooves. A driving cavity is provided on the outer wall of the air delivery pipe. A driving gear is provided in the driving cavity. The side of the driving gear meshes with the gear plate;

[0025] An adjusting motor is provided on the driving gear. The driving gear is connected to the output end of the adjusting motor.

[0026] Further, the monitoring and reflux structure includes an oil content detector arranged on the drainage pipe and the oil drainage pipe, an output pump and a reflux pump arranged on the drainage pipe and the oil drainage pipe;

[0027] The oil content detector is used to measure the oil content in the water bodies in the drainage pipe and the oil drainage pipe. The output pump is used to drive the water body to be transported outwards, and the reflux pump is used to drive the water body to be transported back.

[0028] Further, the inner pipe self-adjusting structure includes a first flange arranged at the end of the second connecting inner pipe, a second flange arranged on the first flange, a transmission shaft arranged on the second flange, and a gear seat arranged on the transmission shaft;

[0029] A bearing seat is arranged outside the transmission shaft. The transmission shaft is rotatably arranged in the bearing seat. A support seat is arranged on the gear seat, and the gear seat is rotatably arranged on the support seat. A lifting cylinder is arranged on the support seat. A connecting gear is arranged on the side of the gear seat, and a driving motor is arranged on the connecting gear.

[0030] Further, a sealing groove seat is sleeved outside the second connecting inner pipe, and an annular groove is arranged in the sealing groove seat;

[0031] A through hole is arranged on the outer wall of the second connecting outer pipe. A connecting groove is arranged in the through hole. Two sealing plates are movably arranged in the connecting groove. The two ends of each sealing plate are respectively connected with the inner wall of the connecting groove through a connecting spring. The second connecting outer pipe is arranged between the sealing plates. A sealing strip is arranged on one side of the sealing plate close to the sealing groove seat, and the sealing strip is clamped into the annular groove.

[0032] The present invention has the following beneficial effects compared with the prior art:

[0033] The present invention monitors the oil content of the discharged separated water body and separated oil body through the monitoring and reflux structure, analyzes the water content, and drives the corresponding separated water body to flow back into the lower part of the eccentric T-shaped sleeve and / or drives the corresponding separated oil body to flow back into the upper part of the eccentric T-shaped sleeve when the corresponding water content and / or oil content do not meet the standards. And the direction of the lower drainage slit is adjusted through the inner pipe self-adjusting structure, so that the eccentric T-shaped sleeve is in communication with the air flotation driving module. The internal dynamic separation mode of the eccentric T-shaped sleeve is converted into an air flotation separation mode. The air flotation effect helps the unqualified sewage to be separated twice, and the unqualified sewage is treated to avoid waste. Description of the Drawings

[0034] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0035] Figure 1 Structural schematic diagram of a reflux oil-control type eccentric tube two-phase separation system provided by an embodiment of the present invention;

[0036] Figure 2 Cross-sectional schematic diagram of the eccentric T-shaped casing in the dynamic separation mode in an embodiment of the present invention;

[0037] Figure 3 Cross-sectional schematic diagram of the upward movement of the second connecting inner tube in the eccentric T-shaped casing in an embodiment of the present invention;

[0038] Figure 4 Cross-sectional diagram of the eccentric T-shaped casing in the air flotation separation mode in an embodiment of the present invention;

[0039] Figure 5 For Figure 2 Enlarged structural schematic diagram of B in

[0040] Figure 6 For Figure 3 Enlarged structural schematic diagram of C in

[0041] Figure 7 For Figure 4 Enlarged structural schematic diagram of D in

[0042] Figure 8 Cross-sectional structural schematic diagram of the gas transmission pipe in an embodiment of the present invention;

[0043] Figure 9 Cross-sectional structural schematic diagram of the air flotation pipe in an embodiment of the present invention;

[0044] Figure 10 Drive structural schematic diagram of the gear seat in an embodiment of the present invention;

[0045] Figure 11 Side structural schematic diagram of the second connecting inner tube in an embodiment of the present invention;

[0046] Figure 12 Structural schematic diagram of the sealing groove seat in an embodiment of the present invention;

[0047] Figure 13 Structural schematic diagram of the sealing plate in an embodiment of the present invention.

[0048] The reference numerals in the figures are respectively represented as follows:

[0049] 1 - Eccentric T-shaped casing; 2 - Air-float drive module; 3 - Monitoring and reflux structure; 4 - Inner tube self-adjustment structure; 5 - Drainage pipe; 6 - Oil drainage pipe; 7 - Lower drainage slit;

[0050] 11 - First connecting outer tube; 12 - First connecting inner tube; 13 - Floating oil pipe; 14 - Oil spill hole; 15 - Upper drainage gap; 16 - Second connecting outer tube; 17 - Separation vertical tube; 18 - Second connecting inner tube;

[0051] 21 - Gas transmission pipe; 22 - Transportation pipe; 23 - Air extraction pump; 24 - First installation groove; 25 - First connecting shaft; 26 - First circular valve plate; 27 - Rubber edge; 28 - Air-float tube; 29 - Air-float hole; 210 - Second installation groove; 211 - Second connecting shaft; 212 - Second torsion spring; 213 - Second circular valve plate; 214 - Chute; 215 - Gear plate; 216 - Sliding protrusion; 217 - Drive cavity; 218 - Drive gear; 219 - Adjustment motor; 220 - First torsion spring;

[0052] 31 - Oil content detector; 32 - Output pump; 33 - Reflux pump;

[0053] 41 - First flange; 42 - Second flange; 43 - Transmission shaft; 44 - Gear seat; 45 - Bearing seat; 46 - Support seat; 47 - Connecting gear; 48 - Drive motor; 49 - Sealing groove seat; 410 - Ring groove; 411 - Through hole; 412 - Connecting groove; 413 - Sealing plate; 414 - Connecting spring; 415 - Sealing strip; 416 - Lifting cylinder. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0055] As Figure 1 shown, the present invention provides a reflux oil control type eccentric tube two-phase separation system, which includes an eccentric T-shaped casing 1, an air-float drive module 2, a monitoring and reflux structure 3, and an inner tube self-adjustment structure 4.

[0056] Among them, the eccentric T-shaped casing 1 is arranged at the output end of the sewage drainage and transportation. The eccentric T-shaped casing 1 is used to receive sewage and provide a place for dynamic separation of the sewage, as well as the drainage pipe 5 and the oil drainage pipe 6 for discharging after separation. A lower drainage slit 7 is arranged at the lower part inside the eccentric T-shaped casing 1. The eccentric T-shaped casing 1 performs a dynamic separation mode with the lower drainage slit 7 facing downwards, and an air flotation separation mode with the lower drainage slit 7 facing upwards.

[0057] The air flotation drive module 2 is arranged at the bottom of the eccentric T-shaped casing 1. The air flotation drive module 2 is internally connected to the lower part of the eccentric T-shaped casing 1 based on the air flotation separation mode and conveys gas into the lower part inside the eccentric T-shaped casing 1 to form microbubbles combined with the oil in the sewage and float upwards.

[0058] The monitoring and reflux structure 3 is arranged on the drainage pipe 5 and the oil drainage pipe 6. The monitoring and reflux structure 3 is used to monitor the oil content of the discharged separated water body and separated oil body, analyze the water content, and drive the corresponding separated water body to flow back to the lower part inside the eccentric T-shaped casing 1 and / or drive the corresponding separated oil body to flow back to the upper part of the eccentric T-shaped casing 1 when the corresponding water content and / or oil content do not meet the standards.

[0059] The inner pipe self-adjusting structure 4 is arranged on the lower part of the eccentric T-shaped casing 1. The inner pipe self-adjusting structure 4 is used to drive the rotation of the pipeline at the lower part inside the eccentric T-shaped casing 1 to adjust the direction of the lower drainage slit 7, and the inner pipe self-adjusting structure 4 can drive the lifting of the pipeline at the lower part inside the eccentric T-shaped casing 1 to cooperate and communicate with the air flotation drive module 2.

[0060] In the embodiment of the present invention, the monitoring and reflux structure 3 monitors the oil content of the discharged separated water body and separated oil body, analyzes the water content, and drives the corresponding separated water body to flow back to the lower part inside the eccentric T-shaped casing 1 and / or drive the corresponding separated oil body to flow back to the upper part of the eccentric T-shaped casing 1 when the corresponding water content and / or oil content do not meet the standards. And the inner pipe self-adjusting structure 4 adjusts the direction of the lower drainage slit 7, so that the eccentric T-shaped casing 1 cooperates and communicates with the air flotation drive module 2, and the inside of the eccentric T-shaped casing 1 is transformed from the dynamic separation mode to the air flotation separation mode. With the help of air flotation, the unqualified sewage is subjected to secondary separation, and the unqualified sewage is treated to avoid waste.

[0061] In the present invention, the eccentric T-shaped casing 1 is used to receive sewage and provide a place for dynamic separation of the sewage, as well as the drainage pipe 5 and the oil drainage pipe 6 for discharging after separation. The following preferred embodiments are adopted for the eccentric T-shaped casing 1 of the present invention, such as Figure 2 、 Figure 3 and Figure 4As shown in the figure, the eccentric T-shaped casing 1 includes a first connecting outer pipe 11, a first connecting inner pipe 12 arranged inside the first connecting outer pipe 11, an oil floating pipeline 13 arranged on the first connecting outer pipe 11, and an oil spill hole 14 arranged at the connection between the oil floating pipeline 13 and the first connecting outer pipe 11. The first connecting inner pipe 12 penetrates through the first connecting outer pipe 11, and the inner top of the first connecting outer pipe 11 is connected to the inside of the oil floating pipeline 13 through the oil spill hole 14.

[0062] In the above embodiment, the sewage first enters the eccentric T-shaped casing 1 through the first connecting inner pipe 12, and the floating oil can enter the oil floating pipeline 13 through the oil spill hole 14.

[0063] In order to enable the sewage in the first connecting inner pipe 12 to enter the first connecting outer pipe 11, an upper drainage gap 15 is provided at the bottom of the first connecting inner pipe 12 located inside the first connecting outer pipe 11. The inner bottom of the first connecting inner pipe 12 is connected to the inside of the first connecting outer pipe 11 through the upper drainage gap 15, and the central axis of the first connecting inner pipe 12 is located directly above the central axis of the first connecting outer pipe 11.

[0064] In the above embodiment, the gap between the oil spill hole 14 and the first connecting inner pipe 12 is relatively small. Part of the floating oil enters the oil spill hole 14 from the gap, and the water body enters the first connecting outer pipe 11 through the upper drainage gap 15.

[0065] In order to enable the water body to sink further downward on the original basis to be more conducive to water-oil separation, the present invention also makes the following design. A second connecting outer pipe 16 is provided at the bottom of the first connecting outer pipe 11. A second connecting inner pipe 18 is arranged inside the second connecting outer pipe 16. At least one separation vertical pipe 17 is arranged between the second connecting outer pipe 16 and the first connecting outer pipe 11 and is connected through the separation vertical pipe 17; the central axis of the second connecting outer pipe 16 is located directly above the central axis of the second connecting inner pipe 18; a lower drainage slit 7 is provided at the bottom of the second connecting inner pipe 18, and the second connecting inner pipe 18 is connected to the second connecting outer pipe 16 through the lower drainage slit 7.

[0066] In the above embodiment, the water body enters the second connecting outer pipe 16 through the separation vertical pipe 17. The water body at the bottom enters the second connecting inner pipe 18 through the lower drainage slit 7. In addition, an oil drainage pipeline 6 is arranged at the end of the first connecting inner pipe 12, and a drainage pipeline 5 is arranged at the top of the second connecting inner pipe 18. The water body enters the drainage pipeline 5 from the second connecting inner pipe 18 and is discharged.

[0067] In the present invention, the air flotation drive module 2 is internally connected to the lower part of the eccentric T-shaped casing 1 based on the air flotation separation mode and conveys gas into the lower part of the eccentric T-shaped casing 1 to form microbubbles that combine with the oil in the sewage and float upward, as Figure 1As shown in the figure, the air flotation drive module 2 includes an air delivery pipe 21 embedded at the bottom end of the second connecting outer pipe 16, a transportation pipe 22 provided at the end of the air delivery pipe 21, and an air extraction pump 23 provided on the transportation pipe 22; the upper end of the air delivery pipe 21 is flush with the bottom of the inner wall of the second connecting outer pipe 16.

[0068] In the above embodiment, the air extraction pump 23 drives the external air to enter the transportation pipe 22, and enters the second connecting outer pipe 16 and the second connecting inner pipe 18 through the air delivery pipe 21.

[0069] In order to control the connection state of the air delivery pipe 21 according to different modes, the present invention also makes the following design, as Figure 8 As shown in the figure, a first installation groove 24 is provided on the inner wall of the air delivery pipe 21, a first connecting shaft 25 is rotatably provided in the first installation groove 24, and the end of the first connecting shaft 25 is connected to the inside of the first installation groove 24 through a first torsion spring 220; a first circular valve plate 26 is provided on the first connecting shaft 25, a rubber edge 27 is provided on the side of the first circular valve plate 26, and the side of the rubber edge 27 abuts against the air delivery pipe 21.

[0070] The first circular valve plate 26 in the above embodiment is rotatable. When the first circular valve plate 26 is in a horizontal state, the inside of the air delivery pipe 21 is in a closed state. When the first circular valve plate 26 is in a vertical or inclined state, the inside of the air delivery pipe 21 is in a connected state. Among them, the first torsion spring 220 makes the first circular valve plate 26 always in a horizontal state, and an external force is required to convert it into an inclined state or a vertical state.

[0071] In order to cooperate with the structure of the air delivery pipe 21 for connection, the second connecting inner pipe 18 of the present invention adopts the following preferred embodiment, as Figure 9 As shown in the figure, an air flotation pipe 28 is provided at the top of the second connecting inner pipe 18, an air flotation hole 29 is provided on the side wall of the air flotation pipe 28, a second installation groove 210 is provided in the air flotation pipe 28, a second connecting shaft 211 is rotatably provided in the second installation groove 210, and the end of the second connecting shaft 211 is connected to the inside of the second installation groove 210 through a second torsion spring 212. A second circular valve plate 213 is provided on the second connecting shaft 211, and the side of the second circular valve plate 213 abuts against the inner wall of the air flotation pipe 28.

[0072] In the above embodiment, the second circular valve plate 213 is rotatable. When the second circular valve plate 213 is in a horizontal state, the inside of the air flotation pipe 28 is in a closed state. When the second circular valve plate 213 is in a vertical or inclined state, the inside of the air flotation pipe 28 is in a connected state. Among them, the second torsion spring 212 makes the second circular valve plate 213 always in a horizontal state, and an external force is required to convert it into an inclined state or a vertical state. Before the air flotation separation mode, it is necessary to dock the air flotation pipe 28 and the air delivery pipe 21 and make both the air flotation pipe 28 and the air delivery pipe 21 in a connected state.

[0073] To achieve the connection state between the air flotation pipe 28 and the gas transmission pipe 21, it is necessary to drive the rotation of the first circular valve plate 26 and the second circular valve plate 213. Therefore, the present invention makes the following design. As Figure 5 , Figure 6 and Figure 7 shown, a chute 214 is provided on the inner walls of the gas transmission pipe 21 and the air flotation pipe 28. A gear plate 215 is slidably arranged in the chute 214. A sliding protrusion 216 is provided on the side of the gear plate 215, and the sliding protrusion 216 is slidably arranged in the chute 214. A driving cavity 217 is provided on the outer wall of the gas transmission pipe 21. A driving gear 218 is arranged in the driving cavity 217, and the side of the driving gear 218 meshes with the gear plate 215; an adjusting motor 219 is provided on the driving gear 218, and the driving gear 218 is connected to the output end of the adjusting motor 219.

[0074] In the above embodiment, the function of the sliding protrusion 216 is mainly to limit the gear plate 215 to slide on the inner wall of the gas transmission pipe 21.

[0075] In the initial state, the gear plate 215 is below the first circular valve plate 26, and both the first circular valve plate 26 and the second circular valve plate 213 are in a horizontal state. The adjusting motor 219 drives the driving gear 218 to rotate. Under the rotation of the driving gear 218, the gear plate 215 gradually moves upward, gradually pushing the first circular valve plate 26 and the second circular valve plate 213 to rotate, making the first circular valve plate 26 and the second circular valve plate 213 tend to be in an inclined state. As Figure 7 shown, at this time, both the air flotation pipe 28 and the gas transmission pipe 21 are in a connected state.

[0076] In the present invention, the monitoring and reflux structure 3 is used to monitor the oil content of the discharged separated water body and separated oil body, analyze the water content, and drive the corresponding separated water body to flow back to the lower part of the eccentric T-shaped sleeve 1 and / or drive the corresponding separated oil body to flow back to the upper part of the eccentric T-shaped sleeve 1 when the corresponding water content and / or oil content do not meet the standards. The monitoring and reflux structure 3 of the present invention adopts the following preferred embodiments. The monitoring and reflux structure 3 includes an oil content measuring instrument 31 arranged on the drainage pipe 5 and the oil discharge pipe 6, and an output pump 32 and a reflux pump 33 arranged on the drainage pipe 5 and the oil discharge pipe 6.

[0077] In the above embodiment, the oil content measuring instrument 31 is used to measure the oil content of the water body in the drainage pipe 5 and the oil discharge pipe 6. The output pump 32 is used to drive the water body to be transported outward, and the reflux pump 33 is used to drive the water body to flow back and be transported. Among them, the oil content measuring instrument 31 can adopt the BED-1000FZ-3 pipe-section type on-line crude oil water content analyzer. Its water content on-line metering technology can realize on-line metering monitoring of water content, remote data transmission, comprehensive real-time on-line monitoring of water content, and interface with the existing digital platform, and can monitor and record the water content change of crude oil in the pipeline in real time, and perform mode conversion according to the corresponding water content.

[0078] In the present invention, the inner tube self - adjusting structure 4 drives the rotation of the lower part of the pipeline inside the eccentric T - shaped sleeve 1 to adjust the direction of the lower drainage slit 7, and the inner tube self - adjusting structure 4 can drive the lifting of the lower part of the pipeline inside the eccentric T - shaped sleeve 1 to cooperate and communicate with the air - flotation drive module 2. The inner tube self - adjusting structure 4 of the present invention adopts the following preferred embodiments, such as Figure 1 and Figure 10 As shown, the inner tube self - adjusting structure 4 includes a first flange 41 arranged at the end of the second connecting inner tube 18, a second flange 42 arranged on the first flange 41, a transmission shaft 43 arranged on the second flange 42, and a gear seat 44 arranged on the transmission shaft 43. A bearing seat 45 is arranged outside the transmission shaft 43, the transmission shaft 43 is rotatably arranged in the bearing seat 45, a support seat 46 is arranged on the gear seat 44, the gear seat 44 is rotatably arranged on the support seat 46, a lifting cylinder 416 is arranged on the support seat 46, a connecting gear 47 is arranged on the side of the gear seat 44, and a driving motor 48 is arranged on the connecting gear 47.

[0079] In the above - mentioned embodiment, the driving of the driving motor 48 can drive the connecting gear 47 to rotate, thereby driving the gear seat 44 to rotate. The rotation of the gear seat 44 drives the transmission shaft 43 to rotate, and thus drives the second connecting inner tube 18 to rotate through the first flange 41 and the second flange 42 to adjust the direction of the lower drainage slit 7. In this case, some of the oil in the unqualified water body can be discharged into the first connecting outer tube 11 through the lower drainage slit 7 located above.

[0080] In addition, the driving of the lifting cylinder 416 drives the support seat 46 to move upward, thereby driving the second connecting inner tube 18 to move upward. After the second connecting inner tube 18 rotates 180°, it drives the second connecting inner tube 18 to move downward to cooperate and dock with the gas transmission pipe 21 structure, facilitating the air - flotation work.

[0081] In order to ensure the sealing performance at the penetration between the second connecting inner tube 18 and the second connecting outer tube 16, the present invention also makes the following design, such as Figure 11 、 Figure 12 and Figure 13 As shown, a sealing groove seat 49 is sleeved outside the second connecting inner tube 18, and an annular groove 410 is arranged in the sealing groove seat 49; a through - hole 411 is arranged on the outer wall of the second connecting outer tube 16, a connecting groove 412 is arranged in the through - hole 411, two sealing plates 413 are movably arranged in the connecting groove 412, both ends of the sealing plates 413 are respectively connected with the inner wall of the connecting groove 412 through connecting springs 414, the second connecting outer tube 16 is arranged between the sealing plates 413, and a sealing strip 415 is arranged on one side of the sealing plate 413 close to the sealing groove seat 49, and the sealing strip 415 is clamped into the annular groove 416.

[0082] In the above embodiments, under the action of the connecting spring 414, the sealing strip 415 on the sealing plate 413 always abuts against the annular groove 410 in the sealing groove seat 49, and the annular groove 410 is surrounded and sealed by the sealing strips 415 on both sides. Therefore, regardless of the height position of the second connecting inner pipe 18, the connection with the second connecting outer pipe 16 is in a sealed state.

[0083] In summary, the main implementation process of the present invention is as follows:

[0084] Dynamic separation in the initial state: Sewage is injected into the first connecting inner pipe 12. The sewage first enters the eccentric T-shaped sleeve 1 from the first connecting inner pipe 12. The floating oil body can enter the floating oil pipeline 13 through the oil overflow hole 14, and the water body enters the first connecting outer pipe 11 through the upper drainage gap 15. The water body enters the second connecting outer pipe 16 from the separation vertical pipe 17, and the water body at the bottom enters the second connecting inner pipe 18 through the lower drainage slit 7. Under the action of the output pump 32, the water body is discharged from the second connecting inner pipe 18 into the drainage pipeline 5;

[0085] Among them, in addition to being discharged from the floating oil pipeline 13, the oil body is also discharged from the first connecting inner pipe 18 into the oil drainage pipeline 6 under the action of the output pump 32;

[0086] Monitoring the water content and oil content of the discharged water body and oil body: The oil content measuring instrument 31 measures the oil content of the water body in the drainage pipeline 5 and the oil drainage pipeline 6 and analyzes it. When the oil content in the oil drainage pipeline 6 does not meet the standard, the upper part of the reflux pump 33 drives the oil body to reflux, and after being placed in the eccentric T-shaped sleeve for a period of time, it is discharged and inspected again;

[0087] When the water content in the drainage pipeline 5 does not meet the standard, the lower part of the reflux pump 33 drives the water body to reflux. After all the water bodies have refluxed, the lifting cylinder 416 drives the support seat 46 to move upward, thereby driving the second connecting inner pipe 18 to move upward by a certain height. Then the driving motor 48 drives the second connecting inner pipe 18 to rotate 180°. The lower drainage slit 7 changes from facing downward to facing upward, and then the lifting cylinder 416 drives the second connecting inner pipe 18 to move downward to cooperate and dock with the gas transmission pipe 21;

[0088] The adjustment motor 219 drives the drive gear 218 to rotate, and the gear plate 215 gradually moves upward, gradually pushing the first circular valve plate 26 and the second circular valve plate 213 to rotate, so that the first circular valve plate 26 and the second circular valve plate 213 tend to be in an inclined state. At this time, the air floatation pipe 28 and the gas transmission pipe 21 are both in a connected state. The air extraction pump 23 drives the external air to enter the transportation pipe 22, and enters the second connecting inner pipe 18 through the gas transmission pipe 21, and enters the second connecting outer pipe 16 through the air floatation hole 29. Under the action of air floatation, the oil in the second connecting inner pipe 18 and the second connecting outer pipe 16 accelerates into the first connecting outer pipe 11, realizing accelerated separation in the air floatation separation mode.

[0089] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A reflux oil-control type eccentric tube two-phase separation system, characterized in that, Comprising: An eccentric T-shaped casing (1), arranged at the output end of sewage drainage and transportation. The eccentric T-shaped casing (1) is used to receive sewage and provide a place for dynamic separation and drainage pipes (5) and oil drainage pipes (6) for discharging after separation. A lower drainage slit (7) is arranged at the lower part inside the eccentric T-shaped casing (1). The eccentric T-shaped casing (1) performs a dynamic separation mode with the lower drainage slit (7) facing downwards and a flotation separation mode with the lower drainage slit (7) facing upwards; A flotation drive module (2), arranged at the bottom of the eccentric T-shaped casing (1). The flotation drive module (2) is internally connected to the lower part of the eccentric T-shaped casing (1) based on the flotation separation mode and conveys gas into the lower part inside the eccentric T-shaped casing (1) to form microbubbles that combine with the oil in the sewage and float upwards; A monitoring and reflux structure (3), arranged on the drainage pipe (5) and the oil drainage pipe (6). The monitoring and reflux structure (3) is used to monitor the oil content of the discharged separated water body and separated oil body, analyze the water content, and drive the corresponding separated water body to flow back to the lower part inside the eccentric T-shaped casing (1) and / or drive the corresponding separated oil body to flow back to the upper part of the eccentric T-shaped casing (1) when the water content and / or the oil content do not meet the standards; An inner pipe self-adjusting structure (4), arranged on the lower part of the eccentric T-shaped casing (1). The inner pipe self-adjusting structure (4) is used to drive the rotation of the pipe at the lower part inside the eccentric T-shaped casing (1) to adjust the direction of the lower drainage slit (7), and the inner pipe self-adjusting structure (4) can drive the lifting of the pipe at the lower part inside the eccentric T-shaped casing (1) to cooperate with the flotation drive module (2) for internal connection; 2. The reflux oil control type eccentric tube two-phase separation system according to claim 1, wherein The eccentric T-shaped casing (1) includes a first connecting outer pipe (11), a first connecting inner pipe (12) arranged inside the first connecting outer pipe (11), an oil floating pipe (13) arranged on the first connecting outer pipe (11), and an oil overflow hole (14) arranged at the connection between the oil floating pipe (13) and the first connecting outer pipe (11); The first connecting inner pipe (12) penetrates through and is arranged on the first connecting outer pipe (11), and the inner top of the first connecting outer pipe (11) is internally connected to the inside of the oil floating pipe (13) through the oil overflow hole (14); An upper drainage gap (15) is arranged at the bottom of the first connecting inner pipe (12) inside the first connecting outer pipe (11), and the inner bottom of the first connecting inner pipe (12) is internally connected to the inside of the first connecting outer pipe (11) through the upper drainage gap (15); The central axis of the first connecting inner pipe (12) is located directly above the central axis of the first connecting outer pipe (11).

3. A reflux oil-control type eccentric tube two-phase separation system according to claim 2, characterized in that A second connecting outer pipe (16) is provided at the bottom of the first connecting outer pipe (11). A second connecting inner pipe (18) is provided inside the second connecting outer pipe (16). At least one separating vertical pipe (17) is provided between the second connecting outer pipe (16) and the first connecting outer pipe (11) and is communicated through the separating vertical pipe (17). The central axis of the second connecting outer pipe (16) is located directly above the central axis of the second connecting inner pipe (18). The lower drainage slit (7) is provided at the bottom of the second connecting inner pipe (18). The second connecting inner pipe (18) is communicated with the second connecting outer pipe (16) through the lower drainage slit (7).

4. The reflux oil control type eccentric tube two-phase separation system according to claim 3, characterized in that, The oil drainage pipe (6) is provided at the end of the first connecting inner pipe (12). The drainage pipe (5) is provided at the top end of the second connecting inner pipe (18).

5. The two-phase separation system of a reflux oil-control eccentric tube according to claim 4, wherein, The air flotation driving module (2) includes an air delivery pipe (21) embedded at the bottom end of the second connecting outer pipe (16), a transportation pipe (22) provided at the end of the air delivery pipe (21), and an air extraction pump (23) provided on the transportation pipe (22). The upper end of the air delivery pipe (21) is flush with the bottom inner wall of the second connecting outer pipe (16).

6. The two-phase separation system of a reflux oil-control eccentric tube according to claim 5, characterized in that, A first installation groove (24) is provided on the inner wall of the air delivery pipe (21). A first connecting shaft (25) is rotatably provided in the first installation groove (24). The end of the first connecting shaft (25) is connected to the inside of the first installation groove (24) through a first torsion spring (220). A first circular valve plate (26) is provided on the first connecting shaft (25). A rubber edge (27) is provided on the side of the first circular valve plate (26). The side of the rubber edge (27) abuts against the air delivery pipe (21).

7. A reflux oil control type eccentric tube two-phase separation system according to claim 6, characterized in that An air flotation pipe (28) is provided at the top of the second connecting inner pipe (18). Air flotation holes (29) are provided on the side wall of the air flotation pipe (28). A second installation groove (210) is provided inside the air flotation pipe (28). A second connecting shaft (211) is rotatably provided in the second installation groove (210). The end of the second connecting shaft (211) is connected to the inside of the second installation groove (210) through a second torsion spring (212). A second circular valve plate (213) is provided on the second connecting shaft (211). The side of the second circular valve plate (213) abuts against the inner wall of the air flotation pipe (28). Chute grooves (214) are provided on the inner walls of the air delivery pipe (21) and the air flotation pipe (28). A gear plate (215) is slidably provided in the chute grooves (214). A sliding protrusion (216) is provided on the side of the gear plate (215). The sliding protrusion (216) is slidably provided in the chute grooves (214). A driving cavity (217) is provided on the outer wall of the air delivery pipe (21). A driving gear (218) is provided in the driving cavity (217). The side of the driving gear (218) meshes with the gear plate (215). An adjustment motor (219) is provided on the drive gear (218), and the drive gear (218) is connected to the output end of the adjustment motor (219).

8. A reflux oil control type eccentric tube two-phase separation system according to claim 7, characterized in that, The monitored reflux structure (3) includes an oil content detector (31) provided on the drain pipe (5) and the oil drain pipe (6), an output pump (32) and a reflux pump (33) provided on the drain pipe (5) and the oil drain pipe (6); The oil content detector (31) is used to measure the oil content in the water bodies in the drain pipe (5) and the oil drain pipe (6), the output pump (32) is used to drive the water bodies to be transported outwards, and the reflux pump (33) is used to drive the water bodies to be transported back.

9. The reflux oil control type eccentric tube two-phase separation system according to claim 8, characterized in that, The inner pipe self-adjustment structure (4) includes a first flange (41) provided at the end of the second connecting inner pipe (18), a second flange (42) provided on the first flange (41), a transmission shaft (43) provided on the second flange (42), and a gear seat (44) provided on the transmission shaft (43); A bearing seat (45) is provided outside the transmission shaft (43), the transmission shaft (43) is rotatably arranged in the bearing seat (45), a support seat (46) is provided on the gear seat (44), the gear seat (44) is rotatably arranged on the support seat (46), a lifting cylinder (416) is provided on the support seat (46), a connecting gear (47) is provided on the side of the gear seat (44), and a drive motor (48) is provided on the connecting gear (47).

10. A reflux oil-control eccentric tube two-phase separation system according to claim 9, characterized in that, A sealing groove seat (49) is sleeved outside the second connecting inner pipe (18), and an annular groove (410) is provided in the sealing groove seat (49); A through hole (411) is provided on the outer wall of the second connecting outer pipe (16), a connecting groove (412) is provided in the through hole (411), two sealing plates (413) are movably arranged in the connecting groove (412), both ends of the sealing plate (413) are respectively connected to the inner wall of the connecting groove (412) through connecting springs (414), the second connecting inner pipe (18) is arranged between the sealing plates (413), a sealing strip (415) is provided on one side of the sealing plate (413) close to the sealing groove seat (49), and the sealing strip (415) is clamped into the annular groove (410).

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