Oil, gas and water treatment apparatus and method of operation thereof

Abstract

The application discloses an oil-gas-water treatment device and a working method thereof. The oil-gas-water treatment device comprises a treatment tank group, a heater and a pressure balance component. The treatment tank group comprises a first treatment tank and a second treatment tank. The first treatment tank comprises a first tank body, a partition and an oil collecting component. The second treatment tank comprises a second tank body, an oil guiding component and a connecting assembly. The connecting assembly comprises a first connecting piece. The pressure balance component comprises a connecting assembly and a leveling assembly. The connecting assembly comprises a connecting piece and a guide part. The connecting piece comprises a connecting main body and an abutting part. The leveling assembly comprises a leveling piece, a floating ball and a linkage. The application separates oil and water based on the density difference of oil and water by using gravity, and transfers oil liquid by using gravity. The oil liquid transferred by gravity is broken and dewatered by heating. The gas generated by heating the oil liquid is used to apply a predetermined pressure on oil and water, and the stability of oil and water is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil-water separation, and particularly relates to an oil-gas-water treatment device and a working method thereof. BACKGROUND

[0002] Since the oil well produced liquid has a high water content, in order to obtain oil with high purity, it is usually necessary to separate and treat the oil well produced liquid by using a treatment device. Generally, the treatment device separates oil and water by using gravity. During treatment, oil and water are introduced into a mixing cavity of the treatment device, and water is deposited at the bottom of the mixing cavity due to gravity. Due to the difference in density between oil and water, the oil layer is kept above the water layer. With the rising of the liquid level, the oil and water are separated and the upper layer of oil enters an oil cavity, and the lower layer of water enters a water cavity. Since the water in the oil liquid exists in the form of free water, emulsified water and dissolved water, gravity separation can only separate the free water. In addition, in this process, in order to meet the actual production needs, oil and water usually continuously flow into the mixing cavity, which will cause the oil and water in the mixing cavity to fluctuate vertically, resulting in a large amount of water being mixed into the oil cavity, so that the oil and water are not completely separated.

[0003] Obviously, the single separation effect is very limited, and it is usually necessary to separate and treat it again. At this time, a pump is usually required to guide the oil liquid in the oil cavity to be discharged, which increases the treatment cost.

[0004] In addition, some treatment devices further treat the oil liquid after gravity separation, such as heating the oil liquid to break the emulsion and remove water, so as to reduce the water content of the oil liquid. Since the oil liquid is heated to break the emulsion and remove water, gas is generated at the same time. In order to control the pressure in the heating cavity of the treatment device within a certain pressure range, a control component and a detection device are usually required to regularly discharge the gas. Obviously, in this process, the gas is an additional product, which does not help the whole treatment process, and also increases the complexity of the equipment and the cost of the equipment. SUMMARY

[0005] An advantage of the present application is to provide an oil-gas-water treatment device and a working method thereof. The present application separates oil and water by using gravity based on the difference in density between oil and water, and transfers the oil liquid by using gravity. In this process, no additional power is required, the operation is convenient, and energy is saved.

[0006] An advantage of the present application is to provide an oil-gas-water treatment device and a working method thereof. The present application separates oil and water by using gravity based on the difference in density between oil and water, and transfers the oil liquid by using gravity. In this process, no additional power is required, the operation is convenient, and energy is saved.

[0007] An advantage of the present application is to provide an oil, gas and water treatment device and a working method thereof. The present application heats oil to break emulsion and produce gas, and automatically balances pressure to enable oil to flow downward under gravity to be transferred, so that oil breaking emulsion and dehydration operation can be continuously carried out.

[0008] To achieve the above at least one advantage of the present application, the present application provides an oil, gas and water treatment device, which comprises:

[0009] A treatment tank group, which comprises:

[0010] A first treatment tank, which comprises a first tank body, a partition and an oil collecting component, the partition and the oil collecting component are both installed in the first tank body and separate the space in the first tank body into a first mixing cavity, a water collecting cavity and a water filtering cavity, the water filtering cavity is between the first mixing cavity and the water collecting cavity, the oil collecting component has an oil filtering part and a water separating part, the water separating part is between the oil filtering part and the partition, the first tank body and the oil filtering part jointly form the first mixing cavity, the first tank body and the partition jointly form the water collecting cavity, the first tank body, the partition and the water separating part jointly form the water filtering cavity, the oil collecting component forms an oil collecting cavity with the first tank body in a manner that the oil filtering part and the water separating part both extend horizontally to the two opposite inner walls of the first tank body, the top end of the partition is spaced apart from the top wall of the first tank body by a predetermined distance to communicate the water collecting cavity with the water filtering cavity, there is a predetermined gap between the bottom wall of the oil collecting component and the bottom wall of the first tank body to communicate the first mixing cavity with the water filtering cavity, the first tank body has a guide inlet, the guide inlet communicates with the first mixing cavity, the guide inlet is used to guide oil, gas and water mixture into the first mixing cavity, the top of the water separating part is spaced apart from the top wall of the first tank body by a predetermined distance, the height of the top end of the oil filtering part and the water separating part is higher than the height of the top end of the partition, the oil in the first mixing cavity is stratified and the oil in the upper layer can overflow the oil filtering part to enter the oil collecting cavity, the water in the first mixing cavity is stratified and the water in the lower layer can enter the water filtering cavity through the gap between the bottom wall of the oil collecting component and the bottom wall of the first tank body and finally overflow the partition to enter the water collecting cavity, the high end part of the first tank body forms a gas guide outlet, the gas guide outlet communicates with any one of the water collecting cavity, the water filtering cavity and the oil collecting cavity, the gas guide outlet is used to discharge the gas in the first tank body, the bottom part of the oil collecting component forms an oil guide outlet which communicates with the oil collecting cavity;

[0011] A second treatment tank, the second treatment tank comprising a second tank body and an oil guiding component, the second tank body having a second mixing cavity, the oil guiding component being mounted to the second tank body and forming an oil guiding cavity and an oil overflowing port with the second tank body, the oil overflowing port being located near a top of the second tank body, the second mixing cavity being communicated with the oil guiding cavity through the oil overflowing port, oil liquid in the second mixing cavity being layered into water and oil, the oil liquid in the upper layer being able to overflow a top of a side wall of the oil guiding component near a side of the second mixing cavity to enter the oil guiding cavity through the oil overflowing port, a bottom of the second tank body forming at least one water outlet, one of the water outlets being communicated with the second mixing cavity, the corresponding water outlet being used to discharge water in the second mixing cavity, the first treatment tank being located on a top of the second treatment tank, the second treatment tank further comprising an interfacing assembly, the interfacing assembly comprising a first interfacing piece, the first interfacing piece having a first interfacing channel, the first interfacing piece being mounted to a bottom of the oil collecting component in a manner that the first interfacing channel corresponds to the oil guiding outlet, the oil guiding outlet being communicated with the second mixing cavity through the first interfacing channel;

[0012] A heater, the heater having at least one heating part, the heater being mounted to the second tank body in a manner that the heating part extends into the second mixing cavity, the heater being able to generate heat to heat oil liquid guided by the first interfacing piece by the heating part to break emulsion and remove water, the heater generating gas while heating oil liquid to break emulsion and remove water;

[0013] A pressure balance member, the pressure balance member comprising:

[0014] A switching assembly, the switching assembly comprising a switching piece, the switching piece comprising:

[0015] A switching body, the switching body having a communication channel, the switching body being mounted to a high end of the second tank body and extending upward to extend into the first tank body, two ports of the communication channel being communicated with an inside of the first tank body and the second mixing cavity respectively, the port of the communication channel communicated with the second mixing cavity being higher than a height of the oil overflowing port, and the port of the communication channel communicated with the inside of the first tank body being higher than a liquid level of oil liquid in the oil collecting cavity, the communication channel being able to communicate the second mixing cavity with the first tank body, gas generated by heating oil liquid in the second mixing cavity being able to be guided into the first tank body through the communication channel;

[0016] An abutting part, the abutting part being arranged on the switching body;

[0017] A guiding part, the guiding part forming a through hole in a vertical direction;

[0018] A leveling assembly, the leveling assembly comprising:

[0019] a leveling member having a leveling portion vertically opposite to the abutting portion, the leveling member being arranged to be movable up and down to make the leveling portion abut or separate from the abutting portion to block or open the communication passage, the leveling member being installed in the communication passage in a manner that it always passes through the through hole;

[0020] a floating ball in the oil collection cavity, a bottom surface of the floating ball always being lower than a plane where a lowest point of a port of the communication passage in communication with the first tank body is located;

[0021] a linkage member installed in the communication passage and extending out of the port of the communication passage in communication with the first tank body to connect with the floating ball, an end of the linkage member away from the floating ball being connected with the leveling member, when the floating ball is only subjected to gravity, the leveling portion of the leveling member keeps abutting on the abutting portion to block the communication passage, when the floating ball is subjected to buoyancy, the floating ball transmits a force to the leveling member through the linkage member to make the leveling portion movable to separate from the abutting portion to open the communication passage, a gas pressure in the second mixing cavity can be controlled within a predetermined range by the leveling assembly, so that the gas at a high end portion of the second mixing cavity can apply a predetermined pressure to the oil and water at a low end portion of the second mixing cavity.

[0022] According to an embodiment of the present application, the oil-gas-water treatment device comprises a stratification promoting member, the stratification promoting member comprising a distributor installed in the first mixing cavity and located on a path of the oil and water guided into the first mixing cavity through the guide inlet, the distributor being used to distribute the oil and water guided into the first mixing cavity through the guide inlet.

[0023] According to an embodiment of the present application, the stratification promoting member further comprises a flow stabilizing member installed in the first mixing cavity and separating a space in the first mixing cavity into a first part and a second part, the first tank body and the flow stabilizing member together forming the first part, the flow stabilizing member, the oil filtering portion and the first tank body together forming the second part, the distributor being located in the first part, the guide inlet being in communication with the first part, the flow stabilizing member forming a plurality of communication holes in a direction in which the first part extends to the second part, the first part being in communication with the second part through the communication holes, the flow stabilizing member being used to stabilize the flow of the oil and water guided from the first part to the second part.

[0024] According to an embodiment of the present application, the layering promoting member further comprises at least one set of layering promoting elements, each set of the layering promoting elements is provided with a plurality of layering promoting elements, and the plurality of layering promoting elements of each set is arranged in vertical direction on the second portion and is spaced apart by a predetermined height, the overall height of each set of the layering promoting elements is higher than the liquid level of the oil-water in the second portion, a layering promoting channel is formed between two adjacent layering promoting elements, the layering promoting channel is located in the direction in which the first portion extends to the second portion and is in communication with the second portion, the oil-water flowing through the flow stabilizing element can be divided into multiple streams by the plurality of layering promoting elements of each set and is introduced into the corresponding layering promoting channel, the layering promoting element is designed in a bent manner to form a plurality of convex blocking portions and a plurality of concave blocking portions, the plurality of convex blocking portions and the plurality of concave blocking portions are arranged in a spaced apart manner, and the oil-water flowing in the layering promoting channel changes the flow direction by impacting the convex blocking portions and the concave blocking portions and generates inertial force by flow direction mutation to perform oil-water layering.

[0025] According to an embodiment of the present application, the layering promoting elements are at least two sets, each two sets of the layering promoting elements are connected side by side and respectively extend downwardly and obliquely toward each other on two opposite inner walls of the first tank body to form a converging portion, and the oil-water flowing in the layering promoting channel is converged on the converging portion by the action of its own gravity.

[0026] According to an embodiment of the present application, the oil-gas-water treatment device further comprises at least one set of oil-water separation elements, at least one set of the oil-water separation elements is installed in the second mixing cavity and is located above the heating portion, each set of the oil-water separation elements is provided with a plurality of oil-water separation elements, and the plurality of oil-water separation elements is stacked, the oil-water separation element has a plurality of convex portions and a plurality of concave portions, every four concave portions are formed on the circumferential side of a convex portion, the oil-water separation element forms a liquid passage hole in communication with the second mixing cavity at the convex portion and the concave portion, the liquid passage hole formed in the convex portion is used for the oil liquid after demulsification and dehydration to pass through, the liquid passage hole formed in the concave portion is used for the water droplets in the oil liquid after demulsification and dehydration to flow along the inclined wall of the convex portion to the inclined wall of the concave portion due to surface tension and finally sink to the bottom end of the concave portion to be coalesced, and the liquid passage hole of each set of adjacent two oil-water separation elements is stacked in a staggered manner, and the height at which the oil overflow port is located is higher than the height at which the oil-water separation element in the second mixing cavity is located.

[0027] According to an embodiment of the present application, the oil guiding member is installed in the second tank body and divides the space in the second tank body into the second mixing cavity and a treatment cavity, the low end portion of the oil guiding member forms at least one oil leakage port in communication with the oil guiding cavity, and the oil guiding cavity is in communication with the treatment cavity through the oil leakage port.

[0028] According to an embodiment of the present application, the oil-water separation pieces are arranged in three groups, one group of the oil-water separation pieces is arranged in the second mixing cavity, and the other two groups of the oil-water separation pieces are arranged at a predetermined height difference in the treatment cavity and above the oil leakage port of the oil guiding component.

[0029] According to an embodiment of the present application, the second treatment tank further comprises an oil collecting piece, which is installed at the high end of the treatment cavity, and has a plurality of oil collecting ports, an oil collecting passage and an oil discharging port, the oil collecting ports and the oil discharging port are in communication with the oil collecting passage, and the oil collecting piece collects the oil liquid at the uppermost layer after the secondary coalescence dehydration operation in the treatment cavity with the oil collecting ports upward.

[0030] In order to achieve at least one advantage of the present application, the present application provides a working method of oil-gas-water treatment equipment, comprising the following steps:

[0031] The oil-gas-water mixture enters the first mixing cavity through the guide port, the oil liquid at the upper layer in the first mixing cavity overflows the oil filter part to enter the oil collecting cavity, and the water at the lower layer in the first mixing cavity enters the water filter cavity through the gap between the bottom wall of the oil collecting component and the bottom wall of the first tank body, and finally overflows the separation piece to enter the water collecting cavity;

[0032] The oil liquid in the oil collecting cavity flows into the second mixing cavity under the action of gravity, and the heater operates to heat the oil liquid in the second mixing cavity through the heating part to make it demulsify and dehydrate and generate gas;

[0033] With the rising of the oil level in the oil collecting cavity, the floating ball in the oil collecting cavity is subjected to the action of buoyancy, and drives the leveling piece to move away from the abutting part through the connecting piece, the abutting part is separated from the abutting part to open the communication passage communicating the second mixing cavity and the inside of the first tank body, so that the gas in the second mixing cavity can be introduced into the first tank body through the communication passage;

[0034] With the rising of the oil liquid level in the second mixing cavity, the demulsified and dehydrated oil liquid overflows the top end of the side wall of the oil guiding component close to the second mixing cavity and enters the oil guiding cavity through the oil overflowing port.

[0035] Compared with the prior art, the oil-gas-water treatment equipment of the present application has the following technical effects:

[0036] 1. This invention uses gravity to separate oil and water in the first processing tank based on the density difference between oil and water. By designing the first and second processing tanks to be distributed vertically, gravity is used to transfer the separated oil in the first processing tank to the second processing tank for automatic oil transfer.

[0037] 2. In the second processing tank of the present invention, the oil is heated to demulsify and dehydrate it, so as to separate the oil and water based on gravity, further separate the water in the oil, and improve the purity of the oil.

[0038] 3. In the second processing tank of the present invention, the oil is heated by the heater to demulsify and dehydrate while generating gas. The pressure balancing component selectively introduces gas into the first processing tank to automatically balance the pressure between the first processing tank and the second processing tank, so that the oil can continuously flow down under the action of gravity to transfer, ensuring that the oil demulsification and dehydration operation can be carried out continuously.

[0039] 4. In this invention, after heating the oil in the second processing tank with the heater to demulsify and dehydrate the oil, gravity is used to separate the oil and water again to achieve multiple separations of oil and water, thereby further improving the oil-water separation effect.

[0040] 5. The gas generated by heating the oil in the second processing tank of the present invention can apply a predetermined pressure to the oil and water in the second processing tank, increase the stability of the oil and water, and effectively prevent the oil and water from fluctuating greatly, thus ensuring the oil-water separation effect. Attached Figure Description

[0041] Figure 1 A schematic diagram of the structure of the oil, gas and water treatment equipment of the present invention is shown.

[0042] Figure 2 A cross-sectional view of the oil, gas and water treatment equipment of the present invention is shown.

[0043] Figure 3 A perspective view of the oil collection component of the oil, gas and water treatment equipment of the present invention is shown.

[0044] Figure 4 A perspective view of the stratification component structure of the oil, gas and water treatment equipment of the present invention is shown.

[0045] Figure 5 A perspective view of the structure of the oil intake component of the oil, gas and water treatment equipment of the present invention is shown.

[0046] Figure 6 A three-dimensional structural view of the pressure balance component of the oil, gas and water treatment equipment of the present invention is shown.

[0047] Figure 7 A structural perspective view of the pressure balance member of the oil-gas-water treatment device is shown.

[0048] Figure 8 A structural sectional view of the pressure balance member of the oil-gas-water treatment device is shown.

[0049] Figure 9 A partial structural sectional view of the pressure balance member of the oil-gas-water treatment device is shown.

[0050] Figure 10 A structural perspective view of the oil-water separation member of the oil-gas-water treatment device is shown.

[0051] Figure 11 A structural sectional view of the oil-water separation member of the oil-gas-water treatment device is shown.

[0052] Figure 12 A partial structural block diagram of the oil-gas-water treatment device is shown.

[0053] Reference signs:

[0054] Treatment tank group 10; first treatment tank 11; first mixing cavity 1101; first part 11011; second part 11012; water collecting cavity 1102; water filtering cavity 1103; oil collecting cavity 1104; first tank body 111; guide inlet 11101; gas guide outlet 11102; water guide outlet 11103; operation port 11104; partition 112; oil collecting component 113; oil filtering part 1131; water separating part 1132; oil guide outlet 11301; second treatment tank 12; second mixing cavity 1201; treatment cavity 1202; oil guiding cavity 1203; oil overflowing port 1204; second tank body 121; water outlet 12101; oil guiding component 122; oil leaking port 12201; interfacing assembly 123; first interfacing component 1231; first interfacing channel 123101; second interfacing component 1232; second interfacing channel 123201; oil collecting component 124; oil collecting port 12401; oil collecting channel 12402; oil discharging port 12403;

[0055] Layering promoting member 20; distributor 21; flow stabilizing component 22; communication hole 2201; layering promoting component 23; convex blocking part 231; concave blocking part 232; gathering part 233; layering promoting channel 2301;

[0056] Heater 30; heating part 31;

[0057] Pressure balancing member 40; on-off assembly 41; on-off piece 411; on-off body 4111; communication passage 411101; vertical part 41111; horizontal part 41112; abutting part 4112; guiding part 412; through hole 41201; leveling assembly 42; leveling piece 421; leveling part 4211; floating ball 422; linkage 423;

[0058] Oil-water separation piece 50; protruding part 51; recessed part 52; liquid passage hole 501;

[0059] Defogger 60;

[0060] Detection assembly 70; pressure sensor 71; liquid level meter 72; first liquid level sensor 73; second liquid level sensor 74;

[0061] Control valve group 80; first valve 81; second valve 82; third valve 83;

[0062] Controller 90. DETAILED DESCRIPTION

[0063] The following description is provided to enable those skilled in the art to realize the present application. The preferred embodiments in the following description are only examples and other obvious modifications can be made by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0064] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0065] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0066] Reference Figures 1 to 3, the oil-gas-water treatment device according to a preferred embodiment of the present application will be described in detail below. The oil-gas-water treatment device comprises a treatment tank group 10, which comprises a first treatment tank 11, the first treatment tank 11 comprising a first tank body 111, a partition 112 and an oil collecting component 113, the partition 112 and the oil collecting component 113 being both installed in the first tank body 111 and separating the space in the first tank body 111 into a first mixing cavity 1101, a water collecting cavity 1102 and a water filtering cavity 1103, the water filtering cavity 1103 being located between the first mixing cavity 1101 and the water collecting cavity 1102.

[0067] The oil collecting component 113 has an oil filtering part 1131 and a water separating part 1132, the water separating part 1132 being located between the oil filtering part 1131 and the partition 112. The first tank body 111 and the oil filtering part 1131 jointly form the first mixing cavity 1101, the first tank body 111 and the partition 112 jointly form the water collecting cavity 1102, and the first tank body 111, the partition 112 and the water separating part 1132 jointly form the water filtering cavity 1103, the oil collecting component 113 extending horizontally with both the oil filtering part 1131 and the water separating part 1132 towards the two opposite inner walls of the first tank body 111 to form an oil collecting cavity 1104 with the first tank body 111.

[0068] The top end of the partition 112 is spaced apart from the top wall of the first tank body 111 by a predetermined distance to communicate the water collecting cavity 1102 with the water filtering cavity 1103. The bottom wall of the oil collecting component 113 has a predetermined gap with the bottom wall of the first tank body 111 to communicate the first mixing cavity 1101 with the water filtering cavity 1103. The first tank body 111 has a guide inlet 11101, which communicates with the first mixing cavity 1101, the guide inlet 11101 being used to guide the oil-gas-water mixture into the first mixing cavity 1101. The top of the water separating part 1132 is spaced apart from the top wall of the first tank body 111 by a predetermined distance to make the pressure in the first mixing cavity 1101, the water collecting cavity 1102, the water filtering cavity 1103 and the oil collecting cavity 1104 consistent. The top ends of the oil filtering part 1131 and the water separating part 1132 are both higher than the top end of the partition 112 to ensure that the water in the water filtering cavity 1103 can overflow the partition 112 to enter the water collecting cavity 1102 and prevent the water in the water filtering cavity 1103 from overflowing the water separating part 1132 to enter the oil collecting cavity 1104.

[0069] The oil liquid in the first mixing cavity 1101 which is in the upper layer of the oil-water stratification can overflow the oil filter part 1131 and enter the oil collection cavity 1104. The water in the first mixing cavity 1101 which is in the lower layer of the oil-water stratification can enter the water filter cavity 1103 through the gap between the bottom wall of the oil collection part 113 and the bottom wall of the first tank body 111 and finally overflow the partition 112 and enter the water collection cavity 1102, so as to separate the oil and water by gravity based on the density difference between the oil and water and collect the oil liquid and water respectively.

[0070] Preferably, the high end of the oil filter part 1131 is provided in a zigzag shape to intercept as much water as possible when the oil and water fluctuate in the first mixing cavity 1101, so as to reduce the amount of water overflowing the oil filter part 1131 and entering the oil collection cavity 1104.

[0071] The high end of the first tank body 111 forms a gas guide outlet 11102 which is in communication with any one of the water collection cavity 1102, the water filter cavity 1103 and the oil collection cavity 1104. The gas guide outlet 11102 is used to discharge the gas in the first tank body 111, so as to prevent the pressure in the first tank body 111 from being too high and affecting the service life and causing safety hazards.

[0072] With reference to Figure 2 The oil-gas-water treatment device comprises a stratification promoting member 20 which comprises a distributor 21 installed in the first mixing cavity 1101 and located on the path of the oil and water guided to the first mixing cavity 1101 through the guide inlet 11101. The distributor 21 is used to distribute the oil and water flowing through the guide inlet 11101 and guided to the first mixing cavity 1101, so as to reduce the impact force when the oil and water enter the first mixing cavity 1101, increase the stability after the oil and water enter, and facilitate subsequent stratification.

[0073] With reference to Figure 2The layering-promoting member 20 further comprises a flow stabilizer 22 installed in the first mixing chamber 1101 and separating the space in the first mixing chamber 1101 into a first part 11011 and a second part 11012, the first tank body 111 and the flow stabilizer 22 jointly forming the first part 11011, and the flow stabilizer 22, the oil filter part 1131 and the first tank body 111 jointly forming the second part 11012. The distributor 21 is located in the first part 11011, and the inlet 11101 communicates with the first part 11011. The flow stabilizer 22 forms a plurality of communication holes 2201 in the direction extending from the first part 11011 to the second part 11012, and the first part 11011 communicates with the second part 11012 through the communication holes 2201. The flow stabilizer 22 is used to stabilize the oil-water flow from the first part 11011 to the second part 11012, so as to integrate the oil-water flow in the first part 11011 from turbulent flow state to laminar flow state and guide it to the second part 11012, improve the stability of the oil-water flow introduced into the second part 11012, reduce the fluctuation of the oil-water in the vertical direction, and facilitate subsequent layering.

[0074] Preferably, the flow stabilizer 22 is implemented as a polytetrafluoroethylene plate.

[0075] As preferred, the thickness of the flow stabilizer 22 is 100-150 mm, and the inner diameter of the communication hole 2201 is 8-10 mm.

[0076] Reference Figure 2 and Figure 4 The layering-promoting member 20 further comprises at least one set of layering-promoting members 23, each set of the layering-promoting members 23 is provided with a plurality of layering-promoting members 23, and the plurality of layering-promoting members 23 in each set are arranged in the vertical direction in the second part 11012 and are spaced apart by a predetermined height, and the overall height of each set of the layering-promoting members 23 is higher than the liquid level of the oil-water in the second part 11012. Adjacent two layering-promoting members 23 form a layering-promoting channel 2301, which is located in the direction extending from the first part 11011 to the second part 11012 and communicates with the second part 11012. The oil-water flowing through the flow stabilizer 22 can be divided into multiple streams by the plurality of layering-promoting members 23 in each set and introduced into the corresponding layering-promoting channels 2301. The layering-promoting members 23 are designed to be bent to form a plurality of convex blocking parts 231 and a plurality of concave blocking parts 232, and the plurality of convex blocking parts 231 and the plurality of concave blocking parts 232 are arranged in a spaced apart manner. The oil-water flowing in the layering-promoting channel 2301 changes the flow direction by impacting the convex blocking parts 231 and the concave blocking parts 232 and generates inertial force through flow direction mutation to perform oil-water layering.

[0077] Specifically, in the process of oil and water flowing in the stratification promoting channel 2301 constantly changing the flow direction due to the bending design of the stratification promoting member 23, oil and water constantly impact the convex blocking part 231 and the concave blocking part 232 of the stratification promoting member 23. Since the density of oil is less than that of water, the inertial force of water is greater than that of oil when the flow direction changes. In this process, water with greater inertial force tends to the edge of the stratification promoting channel 2301, and oil with smaller inertial force tends to the center of the stratification promoting channel 2301, so as to accelerate the convergence of oil layer, the convergence of water layer and the stratification of oil and water by using the action of inertial force.

[0078] It is worth mentioning that the stratification promoting member 23 has at least two groups, and each two groups of the stratification promoting member 23 are connected side by side and respectively extend downwardly and obliquely to the two opposite inner walls of the first tank body 111 to form a converging part 233. Oil and water flowing in the stratification promoting channel 2301 converge in the converging part 233 under the action of their own gravity, so that the oil layer and the water layer in each stratification promoting channel 2301 can converge respectively, laying the foundation for subsequent oil and water stratification.

[0079] Preferably, each group of the stratification promoting member 23 is inclined at an angle of 15-20 degrees with the plane where the high end part is located.

[0080] It is worth mentioning that the stratification promoting member 23 is spaced apart from the oil collecting member 113 by a predetermined distance, so that the converged oil layer and the converged water layer after flowing through each stratification promoting channel 2301 can converge in the part of the second part 11012 located between the stratification promoting member 23 and the oil collecting member 113, respectively, to promote oil and water stratification.

[0081] Preferably, the stratification promoting member 23 is provided with four groups, and each two groups of the stratification promoting member 23 form a pair, and two pairs of the stratification promoting member 23 are spaced apart by a predetermined distance. After oil and water are introduced into the part of the second part 11012 located between the two pairs of the stratification promoting member 23 after being treated by a pair of the stratification promoting member 23, the converged oil layer and the converged water layer after flowing through each stratification promoting channel 2301 can converge in the part, respectively. The converged oil layer and the converged water layer are guided to another pair of the stratification promoting member 23, at this time, the content of oil in the oil and water introduced into the stratification promoting channel 2301 located at the low end part is lower than that of water, and the content of oil in the oil and water introduced into the stratification promoting channel 2301 located at the high end part is higher than that of water, so as to stratify oil and water again by using the action of inertial force, and improve the effect of oil and water stratification.

[0082] Reference Figure 2 and Figure 5The processing tank group 10 further comprises a second processing tank 12, which comprises a second tank body 121 having a second mixing cavity 1201 and an oil guiding component 122 installed on the second tank body 121 and forming an oil guiding cavity 1203 and an oil overflowing port 1204 in communication with the oil guiding cavity 1203, the oil overflowing port 1204 being located near the top of the second tank body 121. The second mixing cavity 1201 is in communication with the oil guiding cavity 1203 through the oil overflowing port 1204, and the oil liquid in the upper layer of the second mixing cavity 1201 can overflow the top of the side wall of the oil guiding component 122 near the side of the second mixing cavity 1201 to enter the oil guiding cavity 1203 through the oil overflowing port 1204.

[0083] Preferably, the high end of the side wall of the oil guiding component 122 near the side of the second mixing cavity 1201 is designed in a zigzag shape to intercept as much water as possible when the water and oil in the second mixing cavity 1201 fluctuate, thereby reducing the amount of water introduced into the oil guiding cavity 1203 through the oil overflowing port 1204.

[0084] With reference to Figure 2 The first processing tank 11 is located on the top of the second processing tank 12. The second processing tank 12 further comprises an interfacing assembly 123, which comprises a first interfacing piece 1231 having a first interfacing channel 123101. The bottom of the oil collecting component 113 forms an oil guiding outlet 11301 in communication with the oil collecting cavity 1104, and the first interfacing piece 1231 is installed on the bottom of the oil collecting component 113 in a manner that the first interfacing channel 123101 corresponds to the oil guiding outlet 11301, and the oil guiding outlet 11301 is in communication with the second mixing cavity 1201 through the first interfacing channel 123101, so that the oil liquid in the oil collecting cavity 1104 can flow into the second mixing cavity 1201 under the action of gravity.

[0085] The interfacing assembly 123 further comprises a second interfacing piece 1232 having a second interfacing channel 123201. The bottom of the first tank body 111 has a water guiding outlet 11103, and the second interfacing piece 1232 is installed on the bottom of the first tank body 111 in a manner that the second interfacing channel 123201 corresponds to the water guiding outlet 11103, and the water guiding outlet 11103 is in communication with the second mixing cavity 1201 through the second interfacing channel 123201, so that the water in the water collecting cavity 1102 can flow into the second mixing cavity 1201 under the action of gravity.

[0086] It is worth mentioning that the water separated by gravity based on the density difference between oil and water still contains a small amount of oil, and the water in the water collecting cavity 1102 is introduced into the second mixing cavity 1201 and stays for a predetermined time, and oil-water separation is performed again by gravity to separate the oil as much as possible and improve the recovery rate of the oil.

[0087] Preferably, the radial length of the first interface 1231 near the first end of the oil collecting component 113 is smaller than the radial length of the first interface 1231 near the second tank body 121, so as to reduce the flow rate of the oil in the oil collecting cavity 1104 introduced into the second mixing cavity 1201, reduce the impact disturbance, and avoid the mixing of the water introduced into the second mixing cavity 1201 by the water collecting cavity 1102 and the oil introduced into the second mixing cavity 1201 by the oil collecting cavity 1104 as much as possible, so as to prevent the oil-water separation effect from being affected.

[0088] Reference Figure 2 The oil-gas-water treatment equipment further comprises a heater 30, the heater 30 has at least one heating part 31, and the heater 30 is installed on the second tank body 121 in a manner that the heating part 31 extends into the second mixing cavity 1201. The heater 30 can generate heat to heat the oil introduced by the first interface 1231 by the heating part 31 to break the emulsion and remove water, so as to further reduce the water content of the oil, and the light components in the oil are volatilized by heat, thereby increasing the stability of the remaining oil.

[0089] The bottom of the second tank body 121 forms at least one water outlet 12101, one of the water outlets 12101 communicates with the second mixing cavity 1201, and the corresponding water outlet 12101 is used to discharge the water in the second mixing cavity 1201.

[0090] Preferably, the second interface 1232 extends into the second mixing cavity 1201, the bottom end of the second interface 1232 is lower than the height of the heating part 31, and the height of the heating part 31 is higher than the liquid level of the water in the second mixing cavity 1201, so as to avoid the water introduced into the second mixing cavity 1201 by the second interface 1232 from contacting the heating part 31 and taking away a large amount of heat of the heating part 31 when the heating part 31 generates heat, thereby reducing the utilization rate of the heat generated by the heating part 31.

[0091] Preferably, the height of the bottom end of the first interface 1231 is higher than the liquid level of the water in the second mixing cavity 1201, so as to prevent the oil introduced into the second mixing cavity 1201 by the first interface 1231 from rushing into the water in the second mixing cavity 1201 and affecting the oil-water separation effect.

[0092] As preferred, the first phase connector 1231 extends into the second mixing cavity 1201, and the bottom end of the first phase connector 1231 is above the heating part 31. In this way, at the initial stage of the oil liquid being introduced into the second mixing cavity 1201 by the first phase connector 1231, the oil liquid is poured on the surface of the heating part 31; at the later stage of the oil liquid being introduced into the second mixing cavity 1201 by the first phase connector 1231, the oil liquid submerges the heating part 31, so as to make full use of the heat of the heater 30, and improve the utilization rate of the heater 30.

[0093] Reference Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 It is worth mentioning that the heater 30 generates gas while heating the oil liquid to break emulsion and remove water. The oil gas and water treatment equipment further comprises a pressure balance member 40, which comprises a connecting assembly 41, the connecting assembly 41 comprises a connecting piece 411, the connecting piece 411 comprises a connecting body 4111, the connecting body 4111 has a communication channel 411101, the connecting body 4111 is installed at the high end of the second tank body 121 and extends upward to extend into the first tank body 111, the two ports of the communication channel 411101 are respectively communicated with the inside of the second mixing cavity 1201 and the first tank body 111, and the port of the communication channel 411101 communicated with the second mixing cavity 1201 is higher than the height of the oil overflow port 1204, and the port of the communication channel 411101 communicated with the inside of the first tank body 111 is higher than the liquid level of the oil liquid in the oil collecting cavity 1104. The communication channel 411101 can communicate the second mixing cavity 1201 with the first tank body 111, and the gas generated by the oil liquid in the second mixing cavity 1201 being heated can be introduced into the first tank body 111 through the communication channel 411101, so as to avoid the situation that the oil liquid in the oil collecting cavity 1104 cannot flow to the second mixing cavity 1201 smoothly due to the increase of the pressure in the second mixing cavity 1201.

[0094] Reference Figures 7 to 9The on-off member 411 further comprises an abutting portion 4112 arranged on the on-off body 4111. The pressure balance member 40 further comprises a leveling assembly 42 comprising a leveling member 421 having a leveling portion 4211 vertically opposite to the abutting portion 4112. The leveling member 421 is arranged to be movable up and down so as to abut or separate the leveling portion 4211 from the abutting portion 4112 to block or open the communication passage 411101, thereby controlling the gas in the second mixing cavity 1201 to flow into the first tank body 111.

[0095] The on-off assembly 41 further comprises a guide portion 412 having a through hole 41201 vertically formed therein. The leveling member 421 is installed on the communication passage 411101 in a manner that the leveling portion 4211 always passes through the through hole 41201. The through hole 41201 is used to define the moving direction of the leveling member 421, so as to prevent the leveling member 421 from shaking and failing to effectively abut against the abutting portion 4112 to block the communication passage 411101 when the leveling portion 4211 approaches the abutting portion 4112.

[0096] The leveling assembly 42 further comprises a float ball 422 arranged in the oil collecting cavity 1104 and a linkage member 423 installed in the communication passage 411101 and extending out of the port of the communication passage 411101 to be connected with the float ball 422. The bottom surface of the float ball 422 is always lower than the plane where the lowest point of the port of the communication passage 411101 is located. The end of the linkage member 423 away from the float ball 422 is connected with the leveling member 421.

[0097] When the floating ball 422 is only subjected to gravity, the leveling part 4211 of the leveling member 421 keeps abutting against the abutting part 4112 to block the communication passage 411101; when the floating ball 422 is subjected to buoyancy, the floating ball 422 transmits the acting force to the leveling member 421 through the linkage member 423 to enable the leveling part 4211 to move to separate from the abutting part 4112 to open the communication passage 411101, at this time, the gas in the second mixing cavity 1201 can be guided to the first tank body 111 through the communication passage 411101 to balance the pressure, and the gas pressure in the second mixing cavity 1201 can be controlled by the leveling assembly 42 within a predetermined range, so that the gas at the high end of the second mixing cavity 1201 can apply a predetermined pressure to the oil and water at the low end of the second mixing cavity 1201, to increase the stability of the oil layer and the water layer, to prevent the oil and water from being mixed due to large fluctuations, to affect the effect of layering.

[0098] In an embodiment, the linkage member 423 is movably installed in the communication passage 411101, and the leveling member 421 is kept above the abutting part 4112. When the floating ball 422 is only subjected to gravity, the leveling assembly 42 is subjected to gravity as a whole to block the communication passage 411101 with the leveling part 4211 sitting above the abutting part 4112; when the floating ball 422 is subjected to buoyancy, the leveling assembly 42 moves upward as a whole to make the leveling part 4211 move upward to separate from the abutting part 4112, to open the communication passage 411101.

[0099] In a preferred embodiment, the size of the through hole 41201 is larger than the size of the portion of the leveling member 421 inserted into the through hole 41201, and the leveling member 421 inserted into the through hole 41201 can move a predetermined distance in the radial direction of the through hole 41201. The connection body 4111 includes a vertical portion 41111 and a horizontal portion 41112, the vertical portion 41111 is formed by extending downward from one end of the horizontal portion 41112, and the vertical portion 41111 and the horizontal portion 41112 jointly form the communication passage 411101. The abutting portion 4112 and the guide portion 412 are both arranged on the vertical portion 41111, the leveling member 421 is installed in the communication passage 411101 formed by the vertical portion 41111, and the leveling portion 4211 is located below the abutting portion 4112. The vertical portion 41111 is installed on the high end of the second tank body 121 and extends into the first tank body 111, and the port of the communication passage 411101 formed by the vertical portion 41111 is higher than the height of the oil overflow port 1204 and communicates with the second mixing chamber 1201. The horizontal portion 41112 is arranged in the first tank body 111, and the port of the communication passage 411101 formed by the horizontal portion 41112 is higher than the liquid level of the oil in the oil collection chamber 1104 and communicates with the oil collection chamber 1104. The communication passage 411101 can communicate the second mixing chamber 1201 with the oil collection chamber 1104. The connecting member 423 is pivotally installed in the communication passage 411101 formed by the horizontal portion 41112, the leveling member 421 extends upward in the communication passage 411101 formed by the vertical portion 41111 to pivotally connect with the connecting member 423, and one end of the connecting member 423 away from the leveling member 421 extends out of the port of the communication passage 411101 formed by the horizontal portion 41112 and connects with the float ball 422.

[0100] Specifically, when the float ball 422 is only subjected to the action of gravity, the connecting member 423 applies an upward force to the leveling member 421 through the action of gravity of the float ball 422 to abut the leveling portion 4211 against the abutting portion 4112 to block the communication passage 411101; when the float ball 422 is subjected to the action of buoyancy, the float ball 422 transmits a downward force to the leveling member 421 through the connecting member 423 to move the leveling portion 4211 downward to separate from the abutting portion 4112 to open the communication passage 411101.

[0101] Preferably, the float ball 422 is detachably mounted to the linkage 423. The top end of the first tank body 111 forms an operation port 11104, which is in communication with any one of the first mixing cavity 1101, the water collecting cavity 1102, the water filtering cavity 1103 and the oil collecting cavity 1104, and is located near the top of the oil collecting cavity 1104. The operation port 11104 is used for an operator to reach into the oil collecting cavity 1104 from outside the first tank body 111 to detach or mount the float ball 422.

[0102] It is worth mentioning that the leveling portion 4211 is shaped and sized to fit the bottom wall of the abutting portion 4112 and is designed according to an equal percentage type flow curve to achieve accurate regulation of the flow of gas.

[0103] Referring to Figure 2 , Figure 10 and Figure 11 , the oil, gas and water treatment device further comprises at least one set of oil-water separation pieces 50, wherein at least one set of the oil-water separation pieces 50 is mounted to the second mixing cavity 1201 and located above the heating portion 31. Each set of the oil-water separation pieces 50 is provided with a plurality of oil-water separation pieces 50 stacked together. The oil-water separation piece 50 has a plurality of protruding portions 51 and a plurality of recessed portions 52, and every four recessed portions 52 are formed on the circumferential side of a protruding portion 51. The oil-water separation piece 50 is formed with a liquid passage hole 501 at the protruding portion 51 and the recessed portion 52, which is in communication with the second mixing cavity 1201. The liquid passage hole 501 formed in the protruding portion 51 is used for the oil after demulsification and dehydration to pass through, and the liquid passage hole 501 formed in the recessed portion 52 is used for the water droplets in the oil after demulsification and dehydration to flow along the inclined wall of the protruding portion 51 to the inclined wall of the recessed portion 52 due to surface tension and finally sink to the bottom end of the recessed portion 52 to be coalesced, and then flow to the low end of the second mixing cavity 1201. Every two adjacent oil-water separation pieces 50 in each set are stacked with the liquid passage holes 501 staggered, so that the oil introduced into the space between the oil-water separation pieces 50 at the top of one oil-water separation piece 50 has horizontal movement, increasing the residence time of the oil to coalesce the water in the oil as much as possible. The height of the oil overflow port 1204 is higher than the height of the oil-water separation piece 50 in the second mixing cavity 1201, so that the oil liquid that has not completed the coalescence and dehydration operation can not enter the oil guiding cavity 1203 through the oil overflow port 1204.

[0104] The oil guiding component 122 is installed in the second tank body 121 and divides the space in the second tank body 121 into the second mixing cavity 1201 and the processing cavity 1202. The lower end of the oil guiding component 122 forms at least one oil leakage opening 12201 which communicates with the oil guiding cavity 1203, and the oil guiding cavity 1203 communicates with the processing cavity 1202 through the oil leakage opening 12201.

[0105] Preferably, the oil guiding component 122 extends in the direction in which the lower end of the processing cavity 1202 extends towards the processing cavity 1202 along the second mixing cavity 1201. The oil leakage openings 12201 are provided in plurality, the plurality of oil leakage openings 12201 cover the bottom wall of the part of the oil guiding component 122 which extends into the processing cavity 1202, and the oil leakage openings 12201 are arranged downwardly, so that the oil in the oil guiding cavity 1203 can be uniformly and quickly guided into the processing cavity 1202 under the action of its own gravity.

[0106] Preferably, the oil-water separation piece 50 is provided in three groups, one group of the oil-water separation piece 50 is arranged in the second mixing cavity 1201, and the other two groups of the oil-water separation piece 50 are arranged in the processing cavity 1202 with a predetermined height difference and above the oil leakage openings 12201 of the oil guiding component 122. In this way, based on the oil-water separation piece 50 located in the second mixing cavity 1201, the oil liquid is coalesced and dewatered, and the two groups of oil-water separation piece 50 located in the processing cavity 1202 further coalesce and dewater the oil liquid which has completed the first coalescence and dewatering operation, so as to improve the purity of the oil.

[0107] Preferably, the oil-water separation piece 50 arranged in the processing cavity 1202 has more number of the protruding portions 51 and the recessed portions 52 than the oil-water separation piece 50 arranged in the second mixing cavity 1201, so as to improve the coalescence and dewatering effect.

[0108] Reference Figure 2 The second processing tank 12 further comprises an oil collecting piece 124 which is installed at the upper end of the processing cavity 1202, the oil collecting piece 124 has a plurality of oil collecting openings 12401, an oil collecting passage 12402 and an oil discharge opening 12403, and the oil collecting openings 12401 and the oil discharge opening 12403 both communicate with the oil collecting passage 12402. The oil collecting piece 124 collects the oil liquid which is located at the uppermost layer after the second coalescence and dewatering operation in the processing cavity 1202 in a manner that the oil collecting openings 12401 face upwards, so as to ensure that the purity of the oil liquid collected by the oil collecting piece 124 is high. The oil discharge opening 12403 is used to guide the oil liquid passing through the oil collecting openings 12401 out.

[0109] Preferably, the water outlet 12101 is provided with two, one of which is in communication with the second mixing cavity 1201, and the other is in communication with the treatment cavity 1202. The water outlet 12101 in communication with the treatment cavity 1202 is used to discharge water that is coalesced by the two groups of oil-water separation pieces 50 and sinks to the lower end of the treatment cavity 1202 under gravity.

[0110] It is worth mentioning that the oil-gas-water treatment equipment is arranged according to the oil well area, and the water discharged from the water outlet 12101 can be reinjected in place, reducing the transportation burden.

[0111] Reference Figure 2 It is worth mentioning that most of the oil and water mixed in the gas of the first tank body 111 can be separated by gravity, and part of the oil and water cannot be separated by gravity. The oil-gas-water treatment equipment further comprises a demister 60, which is arranged in the first tank body 111 and located on the flow path of the gas in the first tank body 111 that is guided to the gas guide outlet 11102. The demister 60 can capture oil and water mixed in the gas before the gas in the first tank body 111 is discharged.

[0112] Reference Figure 2 and Figure 12 The oil-gas-water treatment equipment further comprises a detection assembly 70, a control valve group 80 and a controller 90. The detection assembly 70 comprises a pressure sensor 71 mounted on the first tank body 111, which is used to detect the pressure in the first tank body 111, and is communicatively connected to the controller 90. The control valve group 80 comprises a first valve 81 in communication with the gas guide outlet 11102 through a pipeline, which is controllably connected to the controller 90. The controller 90 can control the opening of the first valve 81 according to the feedback of the pressure sensor 71, so as to control the discharge flow of the gas in the first tank body 111, and control the pressure in the first tank body 111 within a predetermined range.

[0113] The detection assembly 70 further comprises a liquid level meter 72 mounted on the outer wall of the first tank body 111 forming the water collecting cavity 1102, which is used to display the water level in the water collecting cavity 1102.

[0114] The detection assembly 70 comprises two first liquid level sensors 73, which are respectively installed in the second mixing cavity 1201 and the processing cavity 1202, and are used to detect the liquid level of water in the second mixing cavity 1201 and the processing cavity 1202. The first liquid level sensors 73 are communicatively connected to the controller 90. The control valve group 80 comprises two second valves 82, which are controllably connected to the controller 90, and are in communication with the water outlet 12101 of the second tank 121 through pipelines. The controller 90 can control the operation of the second valves 82 according to the feedback of the first liquid level sensors 73, so as to control the discharge of water in the second mixing cavity 1201 and the processing cavity 1202.

[0115] It is worth mentioning that the controller 90 can control the liquid level of water in the second mixing cavity 1201 and the processing cavity 1202 by controlling the two second valves 82, so as to increase the liquid level of oil by water, so as to ensure that the oil in the second mixing cavity 1201 can be fully heated by the heating part 31, and facilitate the oil in the second mixing cavity 1201 to pass through the oil overflow port 1204, and facilitate the oil collecting part 124 to collect the oil on the uppermost layer in the processing cavity 1202.

[0116] The detection assembly 70 further comprises a second liquid level sensor 74, which is installed in the oil guiding cavity 1203 and is used to detect the liquid level of oil in the oil guiding cavity 1203. The second liquid level sensor 74 is communicatively connected to the controller 90. The control valve group 80 further comprises a third valve 83, which is controllably connected to the controller 90 and is in communication with the oil outlet 12403 of the oil collecting part 124 through a pipeline. The controller 90 can control the opening degree of the third valve 83 according to the feedback of the second liquid level sensor 74, so as to increase the amount of oil discharged through the oil collecting part 124 by increasing the opening degree of the third valve 83 when the liquid level in the oil guiding cavity 1203 rises, and ensure that the oil collecting part 124 can always collect the oil on the uppermost layer in the processing cavity 1202.

[0117] The working method of the oil-gas-water treatment equipment is provided, which comprises the following steps:

[0118] The oil-gas-water mixture enters the first mixing cavity 1101 through the guide inlet 11101, and the oil in the first mixing cavity 1101 is stratified with the water, and the oil in the upper layer flows over the oil filter part 1131 into the oil collection cavity 1104, and the water in the lower layer flows into the water filter cavity 1103 through the gap between the bottom wall of the oil collection part 113 and the bottom wall of the first tank body 111, and finally flows over the partition 112 into the water collection cavity 1102, to realize preliminary separation based on the density difference between oil and water and by using gravity;

[0119] The oil in the oil collection cavity 1104 flows into the second mixing cavity 1201 under the action of gravity, and the heater 30 operates to heat the oil in the second mixing cavity 1201 through the heating part 31 to cause the oil to be demulsified and dewatered and to generate gas, so as to further reduce the water content of the oil, and the gas at the high end of the second mixing cavity 1201 applies pressure to the oil and water at the low end of the second mixing cavity 1201 to keep it stable;

[0120] As the oil level in the oil collection cavity 1104 rises, the float ball 422 in the oil collection cavity 1104 is subjected to buoyancy, and the leveling part 421 is driven by the connecting part 423 to move away from the abutting part 4112, and the abutting part 4112 is separated from the abutting part 4112 to open the communication passage 411101 that communicates the second mixing cavity 1201 and the inside of the first tank body 111, so that the gas in the second mixing cavity 1201 can be introduced into the first tank body 111 through the communication passage 411101 to balance the pressure, avoiding the oil in the oil collection cavity 1104 being unable to be discharged under the action of gravity due to excessive pressure in the second mixing cavity 1201;

[0121] As the oil level in the second mixing cavity 1201 rises, the demulsified and dewatered oil flows over the oil guide part 122 near the top of the side wall on the side of the second mixing cavity 1201 and enters the oil guide cavity 1203 through the oil overflow port 1204, to further separate the oil and water.

[0122] Preferably, the working method of the oil-gas-water treatment equipment further comprises the following steps:

[0123] The oil-gas-water mixture entering through the guide inlet 11101 is rectified by the distributor 21 and the flow stabilizer 22 in sequence to reduce the impact when flowing into the first mixing cavity 1101.

[0124] Preferably, the working method of the oil-gas-water treatment equipment further comprises the following steps:

[0125] The oil-water mixture flowing through the flow stabilizer 22 is divided into several streams by the multiple layering promoters 23 in each group and introduced into the corresponding layering channels 2301, and the flow direction is changed constantly in the layering channels 2301 by impacting the convex stop 231 and the concave stop 232, and the inertial force generated by the sudden change of flow direction is used to separate the oil and water.

[0126] Preferably, the working method of the oil-gas-water treatment device further comprises the following steps:

[0127] The oil liquid in the second mixing chamber 1201 after demulsification and dehydration is coalesced and dehydrated by at least one group of oil-water separation elements 50 in the second mixing chamber 1201 to further reduce the water content of the oil liquid.

[0128] Preferably, the working method of the oil-gas-water treatment device further comprises the following steps:

[0129] The oil liquid in the oil guiding chamber 1203 enters the treatment chamber 1202 through the oil leakage port 12201, and the oil liquid passes through two groups of oil-water separation elements 50 in sequence to be coalesced and dehydrated again to improve the purity of the oil.

[0130] Preferably, the working method of the oil-gas-water treatment device further comprises the following steps:

[0131] The oil collecting element 124 collects the oil liquid located in the uppermost layer in the treatment chamber 1202 after the secondary coalescence and dehydration operation in the oil collecting port 12401.

[0132] Those skilled in the art should understand that the embodiments of the application described above and shown in the drawings are only examples and do not limit the application. The advantages of the application have been fully and effectively achieved. The functions and structural principles of the application have been demonstrated and described in the embodiments, and the embodiments of the application can be modified or changed in any way without departing from the principles.

Claims

1. An oil, gas and water treatment equipment, characterized in that, The oil, gas and water treatment equipment includes: The processing tank assembly includes: A first processing tank includes a first tank body, a separator, and an oil collecting component. The separator and the oil collecting component are both installed within the first tank body, dividing the space within the first tank body into a first mixing chamber, a water collecting chamber, and a water filtering chamber. The water filtering chamber is located between the first mixing chamber and the water collecting chamber. The oil collecting component has an oil filtering section and a water-separating section, with the water-separating section located between the oil filtering section and the separator. The first tank body and the oil filtering section together form the first mixing chamber. The first tank body and the separator together form the water collecting chamber. The first tank body, the separator, and the water-separating section together form the water filtering chamber. The oil collecting component extends horizontally towards two opposite inner walls of the first tank body to form an oil collecting chamber with the first tank body. The top end of the separator is spaced a predetermined distance from the top wall of the first tank body to connect the water collecting chamber and the water filtering chamber. A pre-formed space exists between the bottom wall of the oil collecting component and the bottom wall of the first tank body. A fixed gap is provided to connect the first mixing chamber and the water filtration chamber. The first tank has an inlet port that is connected to the first mixing chamber. The inlet port is used to introduce an oil-gas-water mixture into the first mixing chamber. The top of the water-separating part is spaced a predetermined distance from the top wall of the first tank. The tops of the oil filtration part and the water-separating part are both higher than the top of the separator. In the first mixing chamber, the oil in the upper layer can overflow the oil filtration part and enter the oil collecting chamber. In the first mixing chamber, the water in the lower layer can enter the water filtration chamber through the gap between the bottom wall of the oil collecting component and the bottom wall of the first tank and eventually overflow the separator and enter the water collecting chamber. The high end of the first tank forms a gas outlet that is connected to any one of the water collecting chamber, the water filtration chamber, and the oil collecting chamber. The gas outlet is used to discharge gas from the first tank. The bottom of the oil collecting component forms an oil outlet that is connected to the oil collecting chamber. The second processing tank includes a second tank body and an oil-drawing component. The second tank body has a second mixing chamber. The oil-drawing component is installed on the second tank body and forms an oil-drawing chamber and an oil-draining port communicating with the oil-drawing chamber. The oil-draining port is located near the top of the second tank body. The second mixing chamber communicates with the oil-drawing chamber through the oil-draining port. In the second mixing chamber, oil and water are separated, and the upper layer of oil can overflow the top of the side wall of the oil-drawing component near the second mixing chamber to enter the oil-drawing chamber through the oil-draining port. At least one water outlet is formed at the bottom of the second tank body, one of which communicates with the second mixing chamber. The corresponding water outlet is used to discharge water from the second mixing chamber. The first processing tank is located at the top of the second processing tank. The second processing tank also includes a connecting assembly. The connecting assembly includes a first connecting member with a first connecting channel. The first connecting member is installed at the bottom of the oil collecting component in such a way that the first connecting channel corresponds to the oil outlet. The oil outlet communicates with the second mixing chamber through the first connecting channel. A heater having at least one heating element is mounted in the second tank such that the heating element extends into the second mixing chamber. The heater is operational and can generate heat to heat the oil discharged from the first contact member by the heating element to demulsify and dehydrate it. The heater generates gas while heating the oil to demulsify and dehydrate it. Pressure balancing component, the pressure balancing component comprising: The connection component includes a connection element, the connection element comprising: The connecting body has a connecting channel. The connecting body is installed on the high end of the second tank and extends upward to enter the first tank. The two ports of the connecting channel are respectively connected to the second mixing chamber and the interior of the first tank. The port of the connecting channel connected to the second mixing chamber is higher than the height of the oil overflow port, and the port of the connecting channel connected to the interior of the first tank is higher than the liquid level of the oil in the oil collecting chamber. The connecting channel can connect the second mixing chamber and the first tank. The gas generated by heating the oil in the second mixing chamber can be introduced into the first tank through the connecting channel. An abutting portion is disposed on the connecting body; The guide portion has a through hole formed in the vertical direction; Leveling component, the leveling component comprising: A leveling component, the leveling component having a leveling part, the leveling part and the abutting part being vertically opposite each other, the leveling component being configured to move up and down to abut or separate the leveling part from the abutting part to block or open the communicating channel, the leveling component being installed in the communicating channel in a manner that always maintains penetration through the through hole; A float is located in the oil collecting chamber, and the bottom surface of the float is always lower than the plane of the lowest point of the port connecting the connecting channel and the first tank body. A linkage is installed within the communication channel and extends through a port communicating with the first tank to connect with the float. The end of the linkage away from the float is connected to the leveling component. When the float is only subjected to gravity, the leveling portion of the leveling component remains in contact with the contact portion to block the communication channel. When the float is subjected to buoyancy, the float transmits a force to the leveling component through the linkage, enabling the leveling portion to move and separate from the contact portion to open the communication channel. The gas pressure in the second mixing chamber can be controlled within a predetermined range by the leveling component, so that the gas located at the high end of the second mixing chamber can apply a predetermined pressure to the oil and water located at the low end of the second mixing chamber.

2. The oil, gas and water treatment equipment according to claim 1, characterized in that, The connection assembly further includes a second connection member having a second connection channel. The bottom of the first tank has a water outlet. The second connection member is installed on the bottom of the first tank in such a way that the second connection channel corresponds to the water outlet. The water outlet is connected to the second mixing chamber through the second connection channel.

3. The oil, gas and water treatment equipment according to claim 1, characterized in that, The oil, gas and water treatment equipment includes a stratification promoting component, which includes a distributor. The distributor is installed in the first mixing chamber and is located on the path of oil and water leading to the first mixing chamber through the inlet. The distributor is used to distribute the oil and water flowing through the inlet and leading to the first mixing chamber.

4. The oil, gas and water treatment equipment according to claim 3, characterized in that, The stratification component further includes a flow stabilizer, which is installed in the first mixing chamber and divides the space within the first mixing chamber into a first part and a second part. The first tank and the flow stabilizer together form the first part, and the flow stabilizer, the oil filter, and the first tank together form the second part. The distributor is located in the first part, and the inlet communicates with the first part. The flow stabilizer forms a plurality of connecting holes in the direction extending from the first part to the second part. The first part communicates with the second part through the connecting holes. The flow stabilizer is used to rectify the oil and water flow that is directed from the first part to the second part.

5. The oil, gas and water treatment equipment according to claim 4, characterized in that, The stratification promoting component further includes at least one set of stratification promoting elements, each set of stratification promoting elements is provided with multiple elements, and the multiple stratification promoting elements in each set are arranged vertically in the second part and spaced at predetermined heights. The overall height of each set of stratification promoting elements is higher than the liquid level of oil and water in the second part. A stratification promoting channel is formed between two adjacent stratification promoting elements. The stratification promoting channel is located in the direction extending from the first part to the second part and is connected to the second part. The oil and water flowing through the flow stabilizer can be diverted by the multiple stratification promoting elements in each set to form multiple streams and be introduced into the corresponding stratification promoting channel. The stratification promoting elements have a bent design to form multiple convex parts and multiple concave parts. The multiple convex parts and multiple concave parts are spaced apart. The oil and water flowing in the stratification promoting channel change the flow direction by impacting the convex parts and concave parts, and the inertial force generated by the sudden change in flow direction is used to perform oil and water stratification.

6. The oil, gas and water treatment equipment according to any one of claims 1 to 5, characterized in that, The oil-gas-water treatment equipment further includes at least one set of oil-water separators, wherein at least one set of oil-water separators is installed in the second mixing chamber and located above the heating section. Each set of oil-water separators has multiple oil-water separators stacked together. Each oil-water separator has multiple protrusions and multiple recesses. Every four recesses are formed around one of the protrusions. Each oil-water separator has a liquid passage hole at both the protrusion and the recess that communicates with the second mixing chamber. The liquid passage hole formed at the protrusion is used to allow the demulsified and dehydrated oil to pass through. The liquid passage hole formed at the recess is used to allow water droplets in the demulsified and dehydrated oil that flow along the inclined wall of the protrusion to the inclined wall of the recess due to surface tension and eventually sink to the bottom of the recess to flow to the lower end of the second mixing chamber. Each set of two adjacent oil-water separators are stacked with the liquid passage holes staggered. The height of the oil overflow port is higher than the height of the oil-water separators in the second mixing chamber.

7. The oil, gas and water treatment equipment according to claim 6, characterized in that, The oil-leading component is installed in the second tank and divides the space inside the second tank into the second mixing chamber and the processing chamber. The lower end of the oil-leading component forms at least one oil leak port that communicates with the oil-leading chamber. The oil-leading chamber communicates with the processing chamber through the oil leak port.

8. The oil, gas and water treatment equipment according to claim 7, characterized in that, The oil-water separator is provided in three sets. One set of the oil-water separator is provided in the second mixing chamber, and the other two sets of the oil-water separator are provided at intervals with a predetermined height difference in the processing chamber and are located above the oil leakage port of the oil-leading component.

9. The oil, gas and water treatment equipment according to claim 8, characterized in that, The second processing tank also includes an oil-gathering component, which is installed at the high end of the processing chamber. The oil-gathering component has multiple oil-gathering ports, oil-gathering channels, and oil-draining ports. The oil-gathering ports and the oil-draining ports are all connected to the oil-gathering channels. The oil-gathering component collects the oil liquid at the top layer in the processing chamber after the secondary coalescence and dehydration operation has been completed, with the oil-gathering ports facing upwards.

10. A method for operating an oil, gas and water treatment device, applicable to the oil, gas and water treatment device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: An oil-gas-water mixture enters the first mixing chamber through the inlet. In the first mixing chamber, the oil and water are separated into layers, and the oil on the upper layer overflows the oil filter and enters the oil collecting chamber. In the first mixing chamber, the water on the lower layer is separated into layers, and it enters the water filtering chamber through the gap between the bottom wall of the oil collecting component and the bottom wall of the first tank body, and finally overflows the separator and enters the water collecting chamber. The oil in the oil collecting chamber flows into the second mixing chamber under the action of gravity. The heater operates to heat the oil in the second mixing chamber through the heating part to demulsify and dehydrate it and generate gas. As the oil level in the oil collecting chamber rises, the float located in the oil collecting chamber is subjected to buoyancy. Through the linkage, the leveling part moves away from the abutment part, and the leveling part separates from the abutment part to open the communication channel connecting the second mixing chamber and the interior of the first tank, so that the gas in the second mixing chamber can be introduced into the first tank through the communication channel. As the oil level in the second mixing chamber rises, the demulsified and dehydrated oil overflows the top of the side wall of the oil inlet component near the second mixing chamber and enters the oil inlet chamber through the overflow port.

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