Adjustable oilfield produced water treatment settling tank

Abstract

The utility model discloses an adjustable oilfield produced water treatment settling tank, and relates to the technical field of oilfield produced water treatment settling tanks. The pre-filtering device comprises a supporting frame, an inner cavity of the supporting frame is movably connected with a tank body, a tank cover is arranged on the top of the tank body, and a pre-filtering assembly is arranged between the tank body and the tank cover. When the device is used, produced water is injected into the water injection sleeve and then flows into the inner cavity of the mounting shell through the water leakage plate at the bottom of the water injection sleeve, large-particle suspended matters are intercepted by the filter screen, and oil substances with larger particle sizes are adsorbed by the lipophilic filter cloth, so that primary purification of the produced water is realized, impurities are effectively removed, and the subsequent settlement load is reduced; when pre-filtered water flows through a flow disturbing structure composed of the flow guide ring and the flow slowing ring, in the process that the water flows to the flow slowing ring along the inclined surface of the flow guide ring, the impact force of the water is obviously weakened, violent disturbance to the water body in the inner cavity of the tank body is avoided, and a stable sedimentation environment is created for produced water.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oilfield produced water treatment settling tank technical field, especially, relate to an adjustable oilfield produced water treatment settling tank. BACKGROUND

[0002] In the oilfield development process, produced water treatment is the important environmental protection and resource recycling link, and the settling tank is one of the special equipment for oil drilling and production, and is the core equipment for produced water treatment, which mainly separates the suspended solid particles, oil droplets and other impurities in the produced water from the water body through the physical sedimentation principle, so as to reduce the load of subsequent treatment process and improve the water quality.

[0003] However, the existing produced water treatment settling tank has the following defects: it does not have a pre-filtering structure, and the large-particle suspended solids and impurities are not preliminarily intercepted after the produced water is directly injected into the tank body, which not only occupies the effective settling space of the tank body, but also easily blocks the subsequent pipeline and equipment, and the impact force of the produced water injected into the settling tank will cause severe disturbance to the water flow in the tank and affect the settling.

[0004] Therefore, we provide an adjustable oilfield produced water treatment settling tank to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing an adjustable oilfield produced water treatment settling tank, which solves the problems of the oilfield produced water treatment settling tank in the prior art, such as not having a pre-filtering structure, being unable to preliminarily pre-filter the oilfield produced water, and not having an adjusting function, and the inclination of the settling tank cannot be adjusted according to the actual working condition, by the cooperation of the pre-filtering assembly and the adjusting assembly.

[0006] To solve the above technical problems, the utility model is realized by the following technical scheme.

[0007] The utility model discloses an adjustable oilfield produced water treatment settling tank, including support frame, the inner chamber movable joint of support frame has the jar body, the top of jar body is provided with the jar cover, be provided with the prefiltering component between jar body and jar cover, the inner wall fixed connection of jar cover has the water injection sleeve, one side of support frame is provided with the adjusting assembly, the prefiltering component includes the installation shell, the installation shell is located between jar body and jar cover, the top of installation shell inner chamber is provided with the filter screen, the bottom of installation shell inner chamber is provided with the oleophilic filter cloth, the inner wall fixed connection of installation shell has the ring, the outside of filter screen and oleophilic filter cloth all are through the card frame and the ring joint, the adjusting assembly includes the mounting bracket, the surface fixed connection of one side of mounting bracket and support frame, the one side fixed connection of mounting bracket inner chamber has the adjusting motor, the output fixed connection of adjusting motor has the main gear, the both sides fixed connection of jar body all have the movable link, one end fixed connection of movable link has the auxiliary gear.

[0008] The utility model further sets up, the inner wall fixed connection of jar body has the flow guide ring, the bottom fixed connection of flow guide ring has the slow flow ring, and the produced water flow after the prefiltering component filters the flow guide ring, and the produced water continues to flow to the slow flow ring along the inclined plane of flow guide ring, and the flow impact force is reduced through the turbulence structure of flow guide ring and slow flow ring, and the produced water in the jar body inner chamber is not influenced by the violent disturbance and settles.

[0009] The utility model further sets up, the top fixed connection of the back of jar body has the connecting frame, the top fixed connection of connecting frame and the surface of jar cover, the surface of connecting frame is connected with the mounting bolt, one end of mounting bolt is connected with the bolt hole of installation shell surface with the thread, and the mounting bolt is twisted to the bolt hole of installation shell surface and is separated, and the movable installation shell is removed, and the filter screen and the oleophilic filter cloth in it are cleaned and maintained.

[0010] The utility model further sets up, the bottom of jar body and the bottom of support frame inner chamber all are fixedly connected with the movable element, and the movable element is fixedly connected with the telescopic link between them, and the telescopic link telescopic swing follows the rotation of jar body, can continue to limit the bottom of jar body, improve the stability of jar body.

[0011] The utility model further sets up, and the both sides of jar cover are provided with the water injection pipe, and one end of water injection pipe communicates with one side of water injection sleeve, and the design of double water injection pipes can improve the water injection of produced water, and the produced water enters the inner chamber of annular water injection sleeve through the water injection pipe, and the water leakage plate at the bottom of water injection sleeve is in the form of raindrop and flows into the prefiltering component.

[0012] The utility model further sets up, the top of jar body and the bottom of jar cover all are fixedly connected with sealing washer, the side of sealing washer is contacted with the surface of installation shell, sealing washer is separated between installation shell and jar body and jar cover, can greatly improve the sealing property that installation shell installs between jar body and jar cover, avoid the event of seepage.

[0013] The utility model further sets up, the bottom of jar body one side is provided with the drain port, one end of drain port is provided with the mounting disc, and the mounting disc of drain port one end is convenient for connecting with external water connection pipeline, thereby the clear water body that produces after settlement is discharged to subsequent processing flow.

[0014] The utility model further sets up, the front of installation shell is fixedly connected with handle, the surface of handle is provided with antiskid line, and manual hold handle, and installation shell is removed from jar body and jar cover through handle and goes in and removes more labor saving and convenient.

[0015] The utility model has the following beneficial effects.

[0016] 1, the utility model for using, after the produced water is injected into the water injection sleeve, first through the water leakage plate at the bottom of the water injection sleeve and flows into the inner chamber of the installation shell, the large particle suspended solids are intercepted through the filter screen, the oil-absorbing filter cloth adsorbs the large particle oil material, the preliminary purification of the produced water is realized, the impurities are effectively removed and the subsequent settlement load is reduced, when the pre-filtered water flows through the flow guide ring and the slow flow ring, the water flow impact force is significantly weakened in the process of flowing from the flow guide ring inclined surface to the slow flow ring, the water body in the inner chamber of the jar body is avoided to be disturbed violently, and a stable settlement environment is created for the produced water.

[0017] 2, the utility model discloses a transmission system that is composed of a driving motor, a main gear, a secondary gear and a movable rod, which can accurately adjust the inclination of the jar body according to the actual working conditions, so that the jar body and the jar cover can be rotated to the desired angle, and the needs of different produced water treatment scenes can be met, and at the same time, the installation shell is connected to the jar body by means of installation bolts, so that when the filter screen and the oil-absorbing filter cloth in the interior need to be cleaned and maintained, the installation shell can be quickly disassembled by simply screwing the bolts, the maintenance process is greatly simplified, and the labor maintenance cost is reduced. ACCURACY OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use the drawing do simple introduction.

[0019] Figure 1 It is a kind of adjustable oilfield produced water treatment sedimentation tank perspective view.

[0020] Figure 2 It is a kind of adjustable oilfield produced water treatment sedimentation tank cross section schematic view.

[0021] Figure 3Adjustable oilfield produced water treatment settling tank Figure 2 A local enlarged view at A.

[0022] Figure 4 Structure diagram of pre-filtering assembly of adjustable oilfield produced water treatment settling tank.

[0023] Figure 5 Structure diagram of back of adjustable oilfield produced water treatment settling tank.

[0024] In the drawings: 1, support frame; 2, tank body; 3, tank cover; 4, pre-filtering assembly; 5, water injection sleeve; 6, adjusting assembly; 401, mounting shell; 402, filter screen; 403, oleophilic filter cloth; 404, collar; 601, mounting frame; 602, adjusting motor; 603, main gear; 604, movable rod; 605, secondary gear; 7, flow guide ring; 8, slow flow ring; 9, connecting frame; 10, mounting bolt; 11, movable piece; 12, telescopic rod; 13, water injection pipe; 14, drainage port. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described embodiments are only some of the embodiments of the present application, not all.

[0026] Embodiment one

[0027] Please refer to Figures 1-5 The present application is an adjustable oilfield produced water treatment settling tank, which comprises a support frame 1, a tank body 2 movably connected to the inner cavity of the support frame 1, a tank cover 3 arranged on the top of the tank body 2, a pre-filtering assembly 4 arranged between the tank body 2 and the tank cover 3, a water injection sleeve 5 fixedly connected to the inner wall of the tank cover 3, an adjusting assembly 6 arranged on one side of the support frame 1, and a mounting shell 401 of the pre-filtering assembly 4. The mounting shell 401 is located between the tank body 2 and the tank cover 3. A filter screen 402 is arranged on the top of the inner cavity of the mounting shell 401. An oleophilic filter cloth 403 is arranged on the bottom of the inner cavity of the mounting shell 401. A collar 404 is fixedly connected to the inner wall of the mounting shell 401. The outer sides of the filter screen 402 and the oleophilic filter cloth 403 are clamped by a clamping frame and the collar 404. The adjusting assembly 6 comprises a mounting frame 601. One side of the mounting frame 601 is fixedly connected to the surface of the support frame 1. An adjusting motor 602 is fixedly connected to one side of the inner cavity of the mounting frame 601. A main gear 603 is fixedly connected to the output end of the adjusting motor 602. Movable rods 604 are fixedly connected to both sides of the tank body 2. Secondary gears 605 are fixedly connected to one end of the movable rods 604.

[0028] Specifically, the water injection pipe 13 is connected with the produced water discharge pipeline, so as to inject the oilfield produced water into the water injection jacket 5. The produced water flows into the inner cavity of the mounting shell 401 through the water leakage plate at the bottom of the water injection jacket 5. The filter screen 402 in the inner cavity of the mounting shell 401 retains the large particle suspended solids in the produced water. The dispersed oil and floating oil with large particle size in the produced water are retained by the oleophilic filter cloth 403. The produced water preliminarily purified through the pre-filter assembly 4 flows to the bottom of the tank body 2 for next step of sedimentation. During the use of the sedimentation tank, when the inclination needs to be adjusted, the drive motor can be started. The output shaft of the drive motor drives the main gear 603 to rotate. The main gear 603 drives the auxiliary gear 605 to rotate. The auxiliary gear 605 drives the movable rod 604 to rotate. The movable rod 604 drives the tank body 2 and the tank cover 3 at the top thereof to rotate to the appropriate inclination.

[0029] Example Two

[0030] Please refer to Figures 1-5 On the basis of example one, the inner wall of the tank body 2 is fixedly connected with a flow guide ring 7. The bottom of the flow guide ring 7 is fixedly connected with a flow slowing ring 8. The top of the back surface of the tank body 2 is fixedly connected with a connecting frame 9. The top of the connecting frame 9 is fixedly connected with the surface of the tank cover 3. The surface of the connecting frame 9 is penetrated by a mounting bolt 10. One end of the mounting bolt 10 is threadedly connected with a bolt hole in the surface of the mounting shell 401. The bottom of the tank body 2 and the bottom of the inner cavity of the supporting frame 1 are both fixedly connected with movable pieces 11. The movable pieces 11 are fixedly connected with an extension rod 12. The two sides of the tank cover 3 are both provided with a water injection pipe 13. One end of the water injection pipe 13 is in communication with one side of the water injection jacket 5. The top of the tank body 2 and the bottom of the tank cover 3 are both fixedly connected with a sealing gasket. One side of the sealing gasket is in contact with the surface of the mounting shell 401. The bottom of one side of the tank body 2 is provided with a water outlet 14. One end of the water outlet 14 is provided with a mounting disc. The front surface of the mounting shell 401 is fixedly connected with a handle. The surface of the handle is provided with anti-slip patterns.

[0031] Specifically: the filtered produced water flows to the flow guide ring 7, and the produced water continues to flow to the slow flow ring 8 along the inclined surface of the flow guide ring 7, the flow guide ring 7 and the slow flow ring 8 form a flow disturbance structure to reduce the impact force of the water flow, and the produced water in the inner cavity of the tank body 2 is not disturbed to affect the sedimentation, the installation bolt 10 is screwed to the end of the bolt hole on the surface of the installation shell 401 to be separated, the installation shell 401 can be moved for disassembly, and the filter screen 402 and the oleophilic filter cloth 403 inside the installation shell 401 can be cleaned and maintained, the telescopic rod 12 can continue to be limited at the bottom of the tank body 2 and improve the stability of the tank body 2, the double water injection pipe 13 can improve the water injection amount of the produced water, the produced water enters the inner cavity of the annular water injection sleeve 5 through the water injection pipe 13, and then flows into the pre-filtering assembly 4 in the form of raindrops through the water leakage plate at the bottom of the water injection sleeve 5, the sealing gasket is arranged between the installation shell 401, the tank body 2 and the tank cover 3, which can greatly improve the sealing performance of the installation shell 401 installed between the tank body 2 and the tank cover 3, and prevent water seepage, the installation disc at one end of the drain port 14 is convenient for connecting with the external water pipeline, so that the clarified water generated after sedimentation is discharged to the subsequent treatment process, and the handle is manually held to move the installation shell 401 in and out of the tank body 2 and the tank cover 3, which is more labor-saving and convenient.

[0032] The working principle of the utility model is as follows: first, the inclination of the settling tank is adjusted according to actual operation requirements, and the specific adjustment method is as follows: the driving motor is started, the output shaft of the driving motor drives the main gear 603 to rotate, the main gear 603 drives the auxiliary gear 605 to rotate, the auxiliary gear 605 drives the movable rod 604 to rotate, and the movable rod 604 drives the tank body 2 and the tank cover 3 at the top of the tank body 2 to rotate to the appropriate inclination, then, the water injection pipe 13 is connected with the produced water discharge pipeline, so that the oilfield produced water is injected into the water injection sleeve 5, the produced water flows into the inner cavity of the installation shell 401 through the water leakage plate at the bottom of the water injection sleeve 5, the filter screen 402 in the inner cavity of the installation shell 401 retains the large particle suspended matter in the produced water, the dispersed oil and the floating oil with large particle size in the produced water are retained by the oleophilic filter cloth 403, the produced water preliminarily purified by the pre-filtering assembly 4 flows to the flow guide ring 7, the produced water continues to flow to the slow flow ring 8 along the inclined surface of the flow guide ring 7, the flow guide ring 7 and the slow flow ring 8 form a flow disturbance structure to reduce the impact force of the water flow, and the produced water in the inner cavity of the tank body 2 is not disturbed to affect the sedimentation, finally, after the produced water sedimentation treatment process is completed, the installation bolt 10 is screwed to the end of the bolt hole on the surface of the installation shell 401 to be separated, so that the installation shell 401 can be moved for disassembly, and the filter screen 402 and the oleophilic filter cloth 403 inside the installation shell 401 can be cleaned and maintained.

[0033] The preferred embodiments disclosed above are only used to help describe the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode described, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the skilled in the art can well understand and utilize the utility model.

Claims

1. An adjustable oilfield produced water treatment settling tank comprising a support frame (1), characterised in that: The inner cavity of the support frame (1) is movably connected with a tank body (2), the top of the tank body (2) is provided with a tank cover (3), a pre-filtering assembly (4) is arranged between the tank body (2) and the tank cover (3), the inner wall of the tank cover (3) is fixedly connected with a water injection sleeve (5), and one side of the support frame (1) is provided with an adjusting assembly (6). The pre-filtering assembly (4) comprises a mounting shell (401), the mounting shell (401) is located between the tank body (2) and the tank cover (3), the top of the inner cavity of the mounting shell (401) is provided with a filter screen (402), the bottom of the inner cavity of the mounting shell (401) is provided with oleophilic filter cloth (403), and the inner wall of the mounting shell (401) is fixedly connected with a clamping ring (404); the outer sides of the filter screen (402) and the oleophilic filter cloth (403) are clamped with the clamping ring (404) through a clamping frame. The adjusting assembly (6) comprises a mounting frame (601), one side of the mounting frame (601) is fixedly connected with the surface of the support frame (1), one side of the inner cavity of the mounting frame (601) is fixedly connected with an adjusting motor (602), the output end of the adjusting motor (602) is fixedly connected with a main gear (603), both sides of the tank body (2) are fixedly connected with movable rods (604), and one end of each movable rod (604) is fixedly connected with a secondary gear (605).

2. An adjustable produced water treatment settling tank according to claim 1, characterized in that: The inner wall of the tank body (2) is fixedly connected with a flow guide ring (7), and the bottom of the flow guide ring (7) is fixedly connected with a flow slowing ring (8).

3. An adjustable produced water treatment settling tank according to claim 1, characterized in that: The top of the back surface of the tank body (2) is fixedly connected with a connecting frame (9), the top of the connecting frame (9) is fixedly connected with the surface of the tank cover (3), the surface of the connecting frame (9) penetrates through and is connected with a mounting bolt (10), and one end of the mounting bolt (10) is threadedly connected with a bolt hole in the surface of the tank cover (3).

4. An adjustable produced water treatment settling tank according to claim 1, characterized in that: The bottom of the tank body (2) and the bottom of the inner cavity of the support frame (1) are fixedly connected with movable pieces (11), and the movable pieces (11) are fixedly connected with an expansion rod (12).

5. An adjustable produced water treatment settling tank according to claim 1, wherein: Both sides of the tank cover (3) are provided with water injection pipes (13), and one end of each water injection pipe (13) is in communication with one side of the water injection sleeve (5).

6. An adjustable produced water treatment settling tank of claim 1, wherein: The top of the tank body (2) and the bottom of the tank cover (3) are fixedly connected with sealing pads, one side of the sealing pad is in contact with the surface of the mounting shell (401).

7. An adjustable produced water treatment settling tank of claim 1, wherein: The bottom of one side of the tank body (2) is provided with a drain port (14), and one end of the drain port (14) is provided with a mounting disc.

8. An adjustable produced water treatment settling tank of claim 1, wherein: The front surface of the mounting shell (401) is fixedly connected with a handle, and the surface of the handle is provided with anti-skid lines.

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