Self-switching type coalescing separator

Abstract

The utility model discloses a self-switching coalescence separator which comprises a main body structure, a water inlet pipeline and a control system, the main body structure comprises a shell, at least one cavity partition plate is arranged in the shell, the shell is divided into a plurality of working cavities by the cavity partition plates, and each working cavity is provided with a filter element group, a sewage inlet, a water outlet and an oil collecting opening; the water inlet pipeline comprises a main pipeline, the main pipeline is communicated with a plurality of shunting pipelines through at least one shunting structure, and the shunting pipelines are respectively connected with the sewage inlet; the control system comprises a controller, and the controller is electrically connected with an incoming flow detection mechanism arranged on the main pipeline and an inlet electromagnetic valve arranged on the flow dividing structure. The controller makes a judgment according to an electric signal detected and converted by the incoming flow detection mechanism and controls the inlet electromagnetic valve to act, the working cavities matched with the filtering capacity are switched and communicated, the sewage filtering efficiency is high, and the treatment effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum crude oil processing, in particular to a self-switching coalescing separator. Background Art

[0002] The oily wastewater generated during the development of oil fields comes from the associated water produced during the oil and gas production process, the oily wastewater discharged from the process equipment discharge system, and the oily wastewater generated by the cleaning equipment. As the water content of oil in oil fields increases year by year, the amount of associated oil field produced water also increases. The wastewater composition is complex, and the degree of oil emulsification and the difficulty of oil removal will also increase. If these wastewaters are discharged without treatment or treatment that does not meet the standards, it will seriously affect the ecological environment.

[0003] During the oil field recovery process, the role of surfactants is to emulsify and disperse crude oil, stripping it from the pore surface to produce emulsion droplets, which are then carried away by the displacement fluid. The addition of surfactants can reduce the interfacial tension between oil and water, making the oil droplets easier to deform and be driven out of the wellbore, thereby increasing the recovery rate. However, these emulsion droplets will increase the difficulty of treating oily wastewater.

[0004] At present, the main oil removal technologies for oily wastewater include flotation oil removal, coalescence oil removal, membrane treatment, etc. Coalescing oil removal is a high-efficiency liquid / liquid separation technology developed in recent years on the basis of giving full play to the advantages of the interdisciplinary disciplines of materials science and fluid mechanics. Its main principle is to utilize the flow characteristics of the fluid in the coalescence medium and the surface wettability of the material medium to coalesce and grow small dispersed oil droplets and then separate them under the action of gravity. Coalescing oil removal has the advantages of physical methods, no chemical residues, and the separated oil can be recycled.

[0005] During the coalescence treatment of oily wastewater, the fibers on the surface of the coalescing layer material of the filter element will gradually absorb surfactants during use, forming a dense oil film on the outer surface of the coalescing filter element, causing a sudden increase in the pressure drop of the filter element, increased energy consumption, and a significant decrease in oil removal efficiency. Since the existing coalescing filter element does not have a backwashing function, the filter element can only be backwashed manually when it is blocked. Once the pressure drop of the filter element is too large, the entire filter element needs to be replaced. Backwashing and replacement require maintenance, which increases manpower and time costs and reduces operating efficiency. In addition, due to the complex upstream flow conditions on site, changes in flow rate, flow velocity and other conditions will occur. It is difficult for the existing oil-water coalescer to adjust in time to cope with the complex upstream conditions, which seriously affects the filtration efficiency.

[0006] Therefore, how to improve the operating efficiency of the oil-water coalescer while achieving targeted filtration of the upstream flow conditions is a technical problem faced by those skilled in the art. Utility Model Content

[0007] The utility model provides a self-switching coalescing separator to solve the problems in the prior art that the oil-water coalescer needs to be shut down for maintenance when replacing the filter element, resulting in low oil-water separation efficiency and the filter element processing capacity cannot adapt to changes in incoming flow conditions.

[0008] The utility model is realized by adopting the following technical solutions.

[0009] A self-switching coalescing separator comprises a main structure, a water inlet pipe and a control system;

[0010] The main structure comprises a shell, in which at least one cavity partition is arranged, and the cavity partition divides the shell into a plurality of working chambers, each of which is provided with a filter element group, a sewage inlet, a drain outlet and an oil receiving outlet;

[0011] The water inlet pipeline includes a main pipeline, the main pipeline is connected to a plurality of branch pipelines through at least one branch structure, and the branch pipelines are respectively connected to the sewage inlet;

[0012] The control system comprises a controller, which is electrically connected to an incoming flow detection mechanism arranged on the main pipeline and an inlet electromagnetic valve arranged on the flow diversion structure.

[0013] Furthermore, a backwash water inlet is provided on the working chamber, the backwash water inlet and the sewage inlet are arranged at intervals, and the filter element group is placed between the backwash water inlet and the sewage inlet.

[0014] Furthermore, the oil collection port is arranged between the backwash water inlet and the sewage inlet.

[0015] Furthermore, the drain outlet is connected to a drain pipe, an outlet solenoid valve is provided on the drain pipe, and the outlet solenoid valve is electrically connected to the controller.

[0016] Furthermore, the oil receiving port is connected to a floating oil collector.

[0017] Furthermore, an inner partition is provided in the working chamber, and the inner partition divides the working chamber into an independently sealed filtering chamber and a detection chamber.

[0018] Furthermore, at least one immersion sensor is provided in the detection cavity, and the immersion sensor is electrically connected to the controller.

[0019] Furthermore, at least one filter element holding partition is provided in the working chamber, and a filter element group is provided on the filter element holding partition.

[0020] Furthermore, the filter element clamping partition is provided with a plurality of installation holes at intervals, and the filter element groups are installed in the installation holes.

[0021] The utility model obtains the following beneficial effects.

[0022] 1. The self-switching coalescing separator of the utility model can detect the oily sewage through the incoming flow detection mechanism, and convert it into an electrical signal to transmit to the controller. After receiving the electrical signal, the controller makes a judgment and controls the action of the inlet solenoid valve to switch the working chamber with suitable filtering capacity to achieve high sewage treatment efficiency; and the controller can realize one-button start and stop;

[0023] 2. The working chambers of the self-switching coalescing separator of the utility model are relatively independent and do not interfere with each other. The filter element group in the working chamber in a non-operating state can be replaced without stopping the machine for maintenance. At the same time, a detection chamber for immersion sensors is separated in the working chamber to ensure that the working chamber in the operating state will not leak when the quick-opening blind plate is opened;

[0024] 3. The self-switching coalescing separator of the utility model can effectively flush the surfactant and oil film blocked on the surface of the filter material by connecting the backwash device to the backwash water inlet, thereby restoring the filtering efficiency of the filter element and extending the replacement cycle of the filter element.

[0025] 4. The multiple working chambers of the self-switching coalescing separator of the utility model share one shell, which saves costs and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 It is a side view of the utility model;

[0028] Figure 3 It is a cross-sectional view of the utility model along the CC line;

[0029] Figure 4 It is a schematic diagram of the structure inside the shell of the utility model;

[0030] Figure 5 It is a top view of the housing of the utility model;

[0031] Figure 6 It is a bottom view of the housing of the utility model.

[0032] Wherein: 1. Main structure; 11. Shell; 110. Working chamber; 1101. Filter chamber; 1102. Detection chamber; 111. Sewage inlet; 112. Drain port; 113. Oil receiving port; 114. Quick-opening blind plate; 115. Backwash water inlet; 12. Cavity partition; 13. Filter element group; 131. Filter element; 14. Inner partition; 15. Filter element clamping partition; 151. Mounting hole; 2. Drain pipe; 3. Floating oil collector; 4. Water inlet pipe, 41. Main pipe; 42. Diversion pipe; 43. Diversion structure; 5. Incoming flow detection mechanism; 6. Controller; 7. Inlet solenoid valve; 8. Outlet solenoid valve; 9. Immersion sensor; A. Water inlet end; B. Backwash end; F. Direction of sewage flowing into the filter element group. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0034] like Figure 1-6 As shown, the utility model provides a self-switching coalescing separator, comprising:

[0035] The main structure 1 comprises a shell 11, at least one cavity partition plate 12, and a plurality of filter element groups 13. The at least one cavity partition plate 12 is arranged inside the shell 11 and divides the shell 11 into a plurality of working chambers 110. The plurality of filter element groups 13 are arranged in a one-to-one correspondence in the plurality of working chambers 110. The plurality of working chambers 110 are provided with a sewage inlet 111, a drain port 112, and an oil receiving port 113. The drain port 112 is connected to a drain pipe 2, and the oil receiving port 113 is connected to a floating oil collector 3.

[0036] The water inlet pipe 4 comprises a main pipe 41, a plurality of branch pipes 42, and at least one branch structure 43. The main pipe 41 is connected to the plurality of branch pipes 42 through the at least one branch structure 43. The plurality of branch pipes 42 are respectively connected to the sewage inlet 111.

[0037] An inflow detection mechanism 5, which is connected to the main pipeline 41 and is used to obtain parameters of the oily wastewater in the main pipeline 41;

[0038] A controller 6, the controller 6 is electrically connected to the incoming flow detection mechanism 5;

[0039] The inlet solenoid valve 7 is electrically connected to the controller 6, and the inlet solenoid valve 7 is arranged on the diversion structure 43;

[0040] The outlet solenoid valve 8 is electrically connected to the controller 6 , and the outlet solenoid valve 8 is arranged on the drainage pipe 2 ; the controller 6 can at least control the action of the inlet solenoid valve 7 based on the signal detected by the incoming flow detection mechanism 5 .

[0041] The self-switching coalescing separator of the utility model can realize one-key start and stop through the controller 6; and the self-switching coalescing separator of the utility model can detect the situation of oily wastewater through the incoming flow detection mechanism 5, and convert it into an electrical signal and transmit it to the controller 6. After receiving the electrical signal, the controller 6 makes a judgment and controls the action of the inlet solenoid valve 7 to switch the working chamber 110 with adapted filtering capacity to connect, and the sewage treatment efficiency is high; at the same time, the working chambers 110 of the self-switching coalescing separator of the utility model are relatively independent and do not interfere with each other. The filter element group 13 in the working chamber 110 in the non-operating state can be replaced without stopping the machine for maintenance; in addition, the multiple working chambers of the self-switching coalescing separator of the utility model share a shell, which saves costs and is convenient for assembly.

[0042] Specifically, Figures 1 to 6 As shown, the self-switching coalescing separator includes a main structure 1, a drainage pipe 2, a floating oil collector 3, a water inlet pipe 4, a flow detection mechanism 5, a controller 6, an inlet solenoid valve 7, and an outlet solenoid valve 8, wherein the main structure 1 has a shell 11, at least one cavity partition 12, and a plurality of filter element groups 13, the shell 11 is a cavity with quick-opening blind plates 114 sealed on both sides, at least one cavity partition 12 is arranged inside the shell 11 and divides the shell 11 into a plurality of working chambers 110, and a plurality of filter element groups 13 are arranged in a one-to-one correspondence in the plurality of working chambers 110, that is, a filter element group 13 is arranged in each working chamber 110, and a sewage inlet 111, a drainage outlet 112 and an oil collecting outlet 113 are opened on the plurality of working chambers 110, the sewage inlet 111 is connected to the water inlet pipe 4, the drainage outlet 112 is connected to the drainage pipe 2, and the collecting The oil port 113 is connected to a floating oil collector 3. In the present embodiment, a cavity partition 12 is provided in the shell 11. The cavity partition 12 is sealed and connected to the shell 11 and divides the shell 11 into two working chambers 110. To prevent floating oil from gathering on the cavity partition 12 and causing inconvenience in collecting oil, the cavity partition 12 is arranged along the gravity direction, that is, the plate thickness direction of the cavity partition 12 is perpendicular to the gravity direction. The filter element group 13 has a plurality of filter elements 131. The filter element 131 adopts a large-flow filter element, a demulsification specialized filter element, etc. The filter elements 131 in the two working chambers 110 can be set to be the same or different. A sewage inlet 111 and an oil collecting port 113 are spaced apart at the upper portion of the working chamber 110. To quickly empty the accumulated liquid in the working chamber 110, a plurality of drain outlets 112 are spaced apart at the lower portion of the working chamber 110, and a plurality of drain outlets 112 are connected to a drainage pipe 2.

[0043] Among them, the water inlet pipe 4 has a main pipe 41, multiple branch pipes 42, and at least one branch structure 43. The main pipe 41 is connected to the multiple branch pipes 42 through at least one branch structure 43. Each branch pipe 42 is respectively connected to the sewage inlet 111. In this embodiment, the water inlet pipe 4 has a main pipe 41, two branch pipes 42, and a branch structure 43. The branch structure 43 connects the main pipe 41 and the two branch pipes 42.

[0044] Among them, the incoming flow detection mechanism 5 is connected to the main pipeline 41, and is used to obtain the parameters of the oily wastewater in the main pipeline 41. In this embodiment, the incoming flow detection mechanism 5 has at least one online detection sensor (not shown in the figure), and the online detection sensor is one or more of an online flow sensor, an online oil content sensor, an online potential sensor, etc.

[0045] Among them, the controller 6 is electrically connected to the incoming flow detection mechanism 5; the inlet solenoid valve 7 is electrically connected to the controller 6, and the inlet solenoid valve 7 is arranged on the diversion structure 43; the outlet solenoid valve 8 is electrically connected to the controller 6, and the outlet solenoid valve 8 is arranged on the drainage pipe 2; the immersion sensor 9 is electrically connected to the controller 6.

[0046] Among them, the controller 6 can at least control the inlet solenoid valve 7 to open, close, switch, etc. based on the signal detected by the incoming flow detection mechanism 5.

[0047] Preferably, the controller 6 uses Mitsubishi FX3U 16MR ES A 128MT PLC programmable controller, and the immersion sensor 9 uses the RS-SJ-N01R01-N01-R01-2 water immersion sensor of Kenda Renke. Specifically, the PLC programmable controller is responsible for receiving the output signals from each sensor (such as the flow signal of the online flow sensor exemplified in the flow detection mechanism 5, the oil content signal of the online oil sensor, etc.) through the signal input pin of the incoming flow detection mechanism 5, and at the same time transmits electrical signals to the inlet and outlet solenoid valves through the signal output pins to control the on-off and opening of the inlet and outlet solenoid valves. In addition, the PLC controller should also be able to connect to a computer through an interface such as RS-422, and realize real-time monitoring and control of relevant parameters through control software.

[0048] Furthermore, along the direction F in which the sewage flows into the filter element group 13 , the upstream end of the filter element group 13 is the water inlet end A, and the downstream end of the filter element group 13 is the backwash end B.

[0049] In this embodiment, the water inlet end A and the backwash end B of the filter element group 13 are respectively arranged at the two ends of the filter element group 13, and the sewage flow path and the backwash water flow path are opposite, so the filtering effect and the backwash effect are good.

[0050] Specifically, Figure 3As shown, along the direction F in which sewage flows into the filter element group 13 , the upstream end of the filter element group 13 is the water inlet end A close to the sewage inlet 111 , and the downstream end of the filter element group 13 is the backwash end B close to the backwash water inlet 115 .

[0051] According to an embodiment of the present invention, a backwash water inlet 115 is provided on the working chamber 110 , and the backwash water inlet 115 is spaced apart from the sewage inlet 111 .

[0052] In this embodiment, by connecting a backwash device to the backwash water inlet 115 , the surfactant and oil film clogging the surface of the filter material can be effectively flushed, the filtering efficiency of the filter element 131 can be restored, and the replacement cycle of the filter element 131 can be extended.

[0053] Specifically, Figure 3 and Figure 5 As shown, a backwash water inlet 115 is provided on the working chamber 110 , and the backwash water inlet 115 is spaced apart from the sewage inlet 111 . In this embodiment, the backwash water inlet 115 is provided at the upper portion of the working chamber 110 .

[0054] Furthermore, a backwash water inlet 115 is provided on the working chamber 110 , and the backwash water inlet 115 is arranged at the backwash end of the filter element group 13 .

[0055] In this embodiment, the backwash water flow path can completely cover the filter element group 13 , thereby achieving complete cleaning of the filter element group 13 .

[0056] Specifically, Figure 3 As shown, the working chamber 110 is provided with a backwash water inlet 115 which is arranged at the backwash end B of the filter element group 13 .

[0057] According to one embodiment of the present utility model, the oil receiving port 113 is disposed between the water inlet end A and the backwash end B of the filter element group 13 .

[0058] In this embodiment, the floating oil collector 3 connected to the oil receiving port 113 can quickly collect more floating oil gathered above the filter element group 13 due to the buoyancy.

[0059] Specifically, Figure 3 As shown, the oil receiving port 113 is arranged between the water inlet end A and the backwash end B of the filter element group 13. In this embodiment, along the direction F in which the sewage flows into the filter element group 13, the upper part of the working chamber 110 is sequentially provided with a sewage inlet 111, an oil receiving port 113, and a backwash water inlet 115.

[0060] According to one embodiment of the present invention, an inner partition 14 is provided in the working chamber 110 , and the inner partition 14 divides the working chamber 110 into an independently sealed filtering chamber 1101 and a detection chamber 1102 .

[0061] In this embodiment, the filter chamber 1101 and the detection chamber 1102 do not interfere with each other. When the filter chamber 1101 is in operation, the quick-open blind plate on one side of the detection chamber 1102 can be opened to replace the filter element group 13 in the filter chamber 1101 in the non-operating state.

[0062] Specifically, Figure 3 and Figure 4 As shown, an inner partition plate 14 sealed and connected to the working chamber 110 is disposed in the working chamber 110 , and the inner partition plate 14 divides the working chamber 110 into an independently sealed filtering chamber 1101 and a detection chamber 1102 .

[0063] According to one embodiment of the present utility model, Figure 2 As shown, at least one immersion sensor 9 is disposed in the detection cavity 1102 , and at least one immersion sensor 9 is disposed at the bottom of the detection cavity 1102 .

[0064] In this embodiment, when water leaks into the detection chamber 1102 from the filter chamber 1101 in operation, the immersion sensor 9 can detect and alarm in time to avoid leakage when the quick-opening blind plate on one side of the detection chamber 1102 is opened.

[0065] Specifically, Figure 2 As shown, at least one immersion sensor 9 is disposed in the detection cavity 1102 , and at least one immersion sensor 9 is disposed at the bottom of the detection cavity 1102 . In this embodiment, an immersion sensor 9 with a probe close to the inner partition 14 is disposed at the bottom of the detection cavity 1102 .

[0066] According to one embodiment of the utility model, at least one filter element holding partition 15 is provided in the filter cavity 1101 , at least one filter element holding partition 15 is sealingly connected to the inner wall of the filter cavity 1101 , and at least one filter element holding partition 15 is provided with a filter element group 13 .

[0067] In this embodiment, the filter element clamping partition 15 can effectively keep the position of the filter element group 13 unchanged, and the filter element clamping partition 15 is sealed and connected to the inner wall of the filter cavity 1101, so that all sewage flows into the filter element 131 for filtration, and the sewage treatment effect is good.

[0068] Specifically, Figures 2 to 4 As shown, at least one filter element clamping partition 15 sealingly connected to the inner wall of the filter cavity 1101 is provided in the filter cavity 1101, and a filter element group 13 is installed on the filter element clamping partition 15. In this embodiment, two filter element clamping partitions 15 are provided in the filter cavity 1101.

[0069] According to one embodiment of the utility model, a plurality of mounting holes 151 are spaced apart on the filter element clamping partition 15 , the number of the mounting holes 151 is consistent with the number of the filter elements 131 of the filter element group 13 , and the inner diameter of the mounting hole 151 is adapted to the outer diameter of the filter element 131 of the filter element group 13 .

[0070] In this embodiment, according to the condition of the filter element 131 in the filter element group 13 , a mounting hole 151 is adaptively opened on the filter element clamping partition 15 to facilitate the disassembly, assembly and replacement of the filter element 131 .

[0071] Specifically, Figure 2 and Figure 4 As shown, the filter element holding partition 15 is provided with a plurality of mounting holes 151 spaced apart from each other, the number of which is the same as the number of filter elements 131 in the filter cavity 1101 where the filter element holding partition 15 is located, and the inner diameter of the mounting hole 151 is adapted to the outer diameter of the filter element 131 .

[0072] According to an embodiment of the present utility model, the filter element clamping baffles 15 are two pieces, and along the direction F in which sewage flows into the filter element group 13, the two filter element clamping baffles 15 are arranged in parallel and at intervals.

[0073] In this embodiment, the two filter element clamping partitions 15 arranged in parallel and at intervals can effectively maintain the smoothness of the filter element group 13 .

[0074] Specifically, Figure 3 and Figure 4 As shown, two filter element clamping partitions 15 are provided in the filter cavity 1101. Along the direction F in which the sewage flows into the filter element group 13, the two filter element clamping partitions 15 are arranged in parallel and spaced apart, that is, along the direction F in which the sewage flows into the filter element group 13, the projections of the two filter element clamping partitions 15 completely overlap.

[0075] The working conditions of the self-switching coalescing separator of the utility model during use are as follows:

[0076] After the incoming flow detection mechanism 5 detects and identifies the oily wastewater in the water inlet pipe 4, the condition of the oily wastewater, such as flow parameters, is converted into an electrical signal and transmitted to the controller 6. The controller 6 receives the electrical signal and makes a judgment after data processing, and then controls the inlet solenoid valve 7 to operate, connect the water inlet pipe 4 with the diversion pipe 42 on the working chamber 110 that can cope with the flow condition, and guide the water flow into the filter chamber 1101 of the working chamber 110 for filtration. The flow path of the oily wastewater in the filter chamber 1101 is as follows: Figure 3As shown by the small solid arrow in the figure, the outlet solenoid valve 8 is then opened to discharge the filtered sewage from the drain port 112 through the drain pipe 2 out of the filter chamber 1101; when the filtering capacity of the filter element group 13 in the filter chamber 1101 decreases, a backwashing device can be connected to the backwashing water inlet 115 to backwash the filter element group 13 to clean the impurities attached to the filter material surface in the oily sewage and restore the filtering performance of the filter element group 13. The flow path of the backwashing water in the filter chamber 1101 is shown in FIG. Figure 3 As indicated by the large hollow arrow in the figure.

[0077] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A self-switching coalescing separator, characterized in that: It comprises a main structure (1), a water inlet pipe (4) and a control system; The main structure (1) comprises a shell (11), at least one cavity partition (12) is provided in the shell (11), the cavity partition (12) divides the shell (11) into a plurality of working chambers (110), each working chamber (110) is provided with a filter element group (13), a sewage inlet (111), a drainage outlet (112) and an oil collection outlet (113); The water inlet pipeline (4) comprises a main pipeline (41), the main pipeline (41) is connected to a plurality of branch pipelines (42) via at least one branch structure (43), and the branch pipelines (42) are respectively connected to the sewage inlet (111); The control system comprises a controller (6), and the controller (6) is electrically connected to an incoming flow detection mechanism (5) arranged on the main pipeline (41) and an inlet solenoid valve (7) arranged on the flow diversion structure (43).

2. A self-switching coalescing separator according to claim 1, characterized in that: The working chamber (110) is provided with a backwash water inlet (115), the backwash water inlet (115) and the sewage inlet (111) are arranged at intervals, and the filter element group (13) is arranged between the backwash water inlet (115) and the sewage inlet (111).

3. A self-switching coalescing separator according to claim 2, characterized in that: The oil receiving port (113) is arranged between the backwash water inlet (115) and the sewage inlet (111).

4. A self-switching coalescing separator according to claim 1, characterized in that: The drainage outlet (112) is connected to a drainage pipe (2), an outlet solenoid valve (8) is provided on the drainage pipe (2), and the outlet solenoid valve (8) is electrically connected to the controller (6).

5. A self-switching coalescing separator according to claim 1, characterized in that: The oil receiving port (113) is connected to a floating oil collector (3).

6. A self-switching coalescing separator according to claim 1, characterized in that: An inner partition (14) is provided in the working chamber (110), and the inner partition (14) divides the working chamber (110) into an independently sealed filtering chamber (1101) and a detection chamber (1102).

7. A self-switching coalescing separator according to claim 6, characterized in that: At least one immersion sensor (9) is provided in the detection cavity (1102), and the immersion sensor (9) is electrically connected to the controller (6).

8. The self-switching coalescing separator according to claim 1, characterized in that: At least one filter element holding partition (15) is provided in the working chamber (110), and a filter element group (13) is provided on the filter element holding partition (15).

9. A self-switching coalescing separator according to claim 8, characterized in that: A plurality of installation holes (151) are provided at intervals on the filter element clamping partition (15), and a filter element group (13) is installed in the installation hole (151).

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