Oil-water separation device for oil exploitation

Abstract

The utility model provides an oil exploitation oil-water separation device which comprises a separation shell, an oil-water separation box and a separation assembly, a feeding pipe and an oil outlet pipe are inserted into the separation shell, the oil-water separation box is arranged in the separation shell, and the feeding pipe and the oil outlet pipe penetrate through the outer wall of the oil-water separation box and extend into the oil-water separation box. Flexible waterproof pieces are arranged at the joints of the feeding pipe and the wall of the oil-water separation box and the joints of the discharging pipe and the wall of the oil-water separation box, and the separation assembly comprises a partition plate and an oil separation plate which are arranged in the oil-water separation box, a layered feeding pipe arranged on the partition plate and an ultrasonic vibrator arranged on the bottom wall of a layered groove; the ultrasonic vibrator is used for driving oil-water mixed liquid in the layering tank to slightly vibrate at high frequency quickly, so that oil and water in the layering tank are separated quickly, oil drops with lower density move upwards quickly, water drops with higher density move downwards quickly, the oil-water mixed liquid is layered in the layering tank, and the oil-water separation speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oil exploitation, in particular to an oil-water separation device for oil exploitation. Background Art

[0002] During the oil extraction process, crude oil is usually pumped out of the ground along with a large amount of water. This requires the use of an oil-water separation device to effectively separate the crude oil and water for subsequent treatment and processing. Due to the different relative densities of oil, gas and water, when the system is in equilibrium, a certain proportion of oil, gas and water will be formed, allowing the oil and water to be separated.

[0003] The device for oil-water separation in petroleum production provided by publication number CN208856952U includes: an oil-water separation tank, an oil-water level gauge, and an air booster pump; the oil-water separation tank is cylindrical; an exhaust pipe is arranged on the upper side of the oil-water separation tank, and the exhaust pipe and the oil-water separation tank are an integrated structure; the oil-water level gauge is arranged on the upper side of the oil-water separation tank, and the oil-water level gauge is fixedly connected to the oil-water separation tank through a flange; the air booster pump is arranged on one side of the oil-water separation tank, and the air booster pump is connected to the oil-water separation tank through a flange.

[0004] However, when the above-mentioned oil-water separation device for oil production is used, the oil-water mixture is input into the oil-water separation tank through the entry pipeline, and the oil with lower density is allowed to form a floating layer on the upper part of the water surface by standing still. It takes a long time for the oil and water to be completely separated, and the efficiency of oil-water separation is low. Summary of the invention

[0005] The purpose of the utility model is to provide an oil-water separation device for petroleum production to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An oil-water separation device for petroleum production, comprising:

[0008] A separation shell, wherein a feed pipe and an oil outlet pipe are inserted into the separation shell;

[0009] An oil-water separation box, the oil-water separation box is arranged in the separation shell, connected to the separation shell by arranging a vibration spring, the feed pipe and the oil outlet pipe pass through the outer wall of the oil-water separation box and extend into the oil-water separation box, and a flexible waterproof sheet for preventing the oil-water separation box from driving the feed pipe and the oil outlet pipe to vibrate is arranged at the connection between the feed pipe and the oil outlet pipe and the side wall of the oil-water separation box; and

[0010] A separation component, the separation component includes a partition plate and an oil separator plate arranged in the oil-water separation box, the partition plate and the oil separator plate divide the oil-water separation box into a buffer tank, a stratification tank and an oil drain tank, the bottom wall of the stratification tank is provided with a drain pipe, the height of the partition plate is higher than the height of the oil separator plate, the partition plate is provided with a stratification feeding pipe, the bottom wall of the stratification tank is provided with an ultrasonic vibrator, the feeding pipe is used to feed the oil-water mixed liquid into the buffer tank, the oil-water mixed liquid decelerated by the buffer tank is fed into the stratification tank in layers through the stratification feeding pipe, the ultrasonic vibrator drives the oil-water mixed liquid in the stratification tank to vibrate, the oil-water mixed liquid in the stratification tank is quickly stratified, water is discharged from the drain pipe, and the oil flows over the oil separator plate into the oil drain tank and is discharged from the oil outlet pipe.

[0011] Preferably, the top wall of the oil-water separation box is provided with an exhaust pipe for discharging the vibrated gas out of the oil-water separation box.

[0012] Preferably, the oil-water separation box is provided with a filter cover for filtering dirt in the oil-water mixed liquid discharged from the feed pipe and for buffering the oil-water mixed liquid.

[0013] Preferably, the separation shell is provided with a drain pipe for discharging gas and liquid in the separation shell, and the drain pipe is provided with a valve for opening or closing the drain pipe.

[0014] Preferably, a switch assembly is provided in the drain pipe, and the switch assembly includes a connecting plate arranged on the outer wall of the oil-water separation box and covering the drain pipe, a plug inserted in the drain pipe, and a telescopic rod arranged on the connecting plate and connected to the plug.

[0015] Preferably, the telescopic rod is used to drive the plug to extend out of the drain pipe to drain the water in the stratification groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model comprises a separation shell, an oil-water separation box and a separation component. The separation shell is provided with a feed pipe and an oil outlet pipe, and the oil-water separation box is arranged in the separation shell. The feed pipe and the oil outlet pipe pass through the outer wall of the oil-water separation box and extend into the oil-water separation box. Flexible waterproof sheets are arranged at the connection points between the feed pipe and the outlet pipe and the wall of the oil-water separation box respectively. The separation component comprises a partition plate and an oil partition plate arranged in the oil-water separation box, a stratified feeding pipe arranged on the partition plate and an ultrasonic vibrator arranged on the bottom wall of the stratification groove. The ultrasonic vibrator is used to drive the oil-water mixed liquid in the stratification groove to vibrate rapidly and at a high frequency, so that the oil and water in the stratification groove are separated rapidly, the oil droplets with lower density move upward rapidly, and the water droplets with higher density move downward rapidly, so that the oil-water mixed liquid is stratified in the stratification groove, and the oil-water separation speed is accelerated. Through the arrangement of the stratified feeding pipe, the oil-water mixed liquid enters the stratification groove through the stratified feeding pipe and is divided into multiple layers and slowly flows into the stratification groove, so as to avoid the oil-water mixed liquid directly hitting the stratification groove and interfering with the stratified oil and water, thereby improving the oil-water separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the oil-water separation box of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sewage pipe of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the layered feeding pipe of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of area A.

[0024] In the figure: 1. separation shell; 2. oil-water separation box; 3. feed pipe; 4. oil outlet pipe; 5. flexible waterproof sheet; 6. buffer tank; 7. stratification tank; 8. oil drain tank; 9. vibration spring; 10. exhaust pipe; 11. ultrasonic vibrator; 12. sewage pipe; 13. partition plate; 14. filter cover; 15. plug; 16. drain pipe; 17. telescopic rod; 18. connecting plate; 19. valve; 20. stratified feeding pipe; 21. oil separation plate; 110. oil layer; 120. water layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 6 , the utility model provides a technical solution:

[0027] An oil-water separation device for petroleum production, comprising:

[0028] The separation shell 1 is a closed hollow box, on which a feed pipe 3 and an oil outlet pipe 4 are inserted. The feed pipe 3 is fixedly connected to the side wall of the separation shell 1 by welding or the like, and the oil outlet pipe 4 is fixedly connected to the side wall of the separation shell 1 by welding or the like.

[0029] The oil-water separation box 2 is arranged in the separation shell 1, one end of the vibration spring 9 is connected to the inner wall of the separation shell 1, the vibration spring 9 is fixedly connected to the inner wall of the separation shell 1 by welding or the like, and the other end is connected to the outer wall of the oil-water separation box 2, the vibration spring 9 is fixedly connected to the outer wall of the oil-water separation box 2 by welding or the like, and an anti-corrosion paint surface is sprayed on the vibration spring 9. Through the setting of the high-strength vibration spring 9, the oil-water separation box 2 can vibrate slightly to buffer the vibration generated by the ultrasonic vibrator 11. The feed pipe 3 passes through the side wall of the oil-water separation box 2 and extends into the oil-water separation box 2. The connection point between the feed pipe 3 and the oil-water separation box 2 is located at A flexible waterproof sheet 5 is provided at the top end of the side wall and at the connection point. The flexible waterproof sheet 5 is fixedly connected to the feed pipe 3 by gluing or the like. The other end of the flexible waterproof sheet 5 is provided on the side wall of the oil-water separation box 2. The flexible waterproof sheet 5 is fixedly connected to the side wall of the oil-water separation box 2 by gluing or the like. The flexible waterproof sheet 5 can be made of nylon cloth with EVA coating. The width of the vertical section of the flexible waterproof sheet 5 is greater than the distance from the side wall of the oil-water separation box 2 to the feed pipe 3, leaving redundancy for the flexible waterproof sheet 5 to move with the oil-water separation box 2 to prevent the oil-water separation box 2 from colliding with the feed pipe 3, causing damage to the feed pipe 3 or causing the feed pipe 3 to vibrate. The feed pipe 3 is used to deliver the oil-water mixed liquid The oil outlet pipe 4 passes through the side wall of the oil-water separation box 2 and extends into the oil-water separation box 2. The connection point between the oil outlet pipe 4 and the oil-water separation box 2 is located at the side wall opposite to the connection point between the feed pipe 3 and the oil-water separation box 2, and the connection point between the oil outlet pipe 4 and the oil-water separation box 2 is set at the bottom of the side wall. A flexible waterproof sheet 5 is provided at the connection point between the oil outlet pipe 4 and the oil-water separation box 2. The flexible waterproof sheet 5 is fixedly connected to the oil outlet pipe 4 by gluing or the like, and the other end is fixedly connected to the side wall of the oil-water separation box 2 by gluing or the like. The flexible waterproof sheet 5 is used to prevent the oil-water separation box 2 from hitting the oil outlet pipe 4 to cause damage to the oil outlet pipe 4 and prevent the liquid in the oil-water separation box 2 from leaking out. The waterproof sheet 5 can be provided with multiple layers to improve the effect of preventing liquid from penetrating. The oil outlet pipe 4 is used to send the separated oil out of the oil-water separation box 2. A filter cover 14 is provided in the oil-water separation box 2. The filter cover 14 covers the connection point between the feed pipe 3 and the oil-water separation box 2. The filter cover 14 is fixedly connected to the oil-water separation box 2 by setting bolts, etc. The filter cover 14 is used to filter the dirt in the oil-water mixed liquid discharged from the feed pipe 3 and to buffer the oil-water mixed liquid so that the oil-water mixed liquid slowly falls into the oil-water separation box 2, avoiding the oil-water mixed liquid from quickly flowing into the oil-water separation box 2 to violently disturb the oil-water mixed liquid in the oil-water separation box 2, making it difficult to quickly separate the oil-water mixed liquid.

[0030] The separation component includes a partition plate 13, an oil separation plate 21, a stratified feeding pipe 20 and an ultrasonic vibrator 11. The oil-water separation box 2 is provided with a partition plate 13 and an oil separation plate 21. The partition plate 13 is fixedly connected to the inner wall of the oil-water separation box 2 by welding or the like. The oil separation plate 21 is fixedly connected to the inner wall of the oil-water separation box 2 by welding or the like. The height of the partition plate 13 is greater than the height of the oil separation plate 21, so that the oil-water mixed liquid entering the stratification tank 7 will not flow back to the buffer tank 6. The partition plate 13 and the oil separation plate 21 separate the oil-water separation box 2 is divided into a buffer tank 6, a stratification tank 7 and an oil drain tank 8, a feed pipe 3 is inserted on the side wall of the buffer tank 6, an oil outlet pipe 4 is inserted on the side wall of the oil drain tank 8, a stratification feeding pipe 20 is arranged on the partition plate 13, and the stratification feeding pipe 20 is fixedly connected to the top wall of the partition plate 13 by welding or the like, a plurality of stratification feeding pipes 20 are arranged, and are evenly laid on the top wall of the partition plate 13, so that the oil-water mixed liquid overflowing the partition plate 13 will flow into the stratification feeding pipe 20, and a plurality of outlets are arranged on the stratification feeding pipe 20, so that the oil-water mixed liquid flowing into the stratification feeding pipe 20 The oil-water mixture flows slowly into the stratification tank 7 through multiple outlets to prevent the oil-water mixture from directly hitting the stratification tank 7. The ultrasonic vibrator 11 is arranged on the bottom wall of the stratification tank 7. The ultrasonic vibrator 11 is fixedly connected to the bottom wall of the stratification tank 7 by setting bolts or the like. The ultrasonic vibrator 11 can use the ultrasonic vibration box with the order number DSZH of Wuxi Dingshi Electronic Technology Co., Ltd. When the feed pipe 3 feeds the oil-water mixture into the buffer tank 6, the oil-water mixture in the buffer tank 6 overflows the partition plate 13 and flows into the stratification feeding pipe 20. The multiple outlets on the stratified feeding pipe 20 slowly discharge the oil-liquid separation tube into the stratification tank 7, and start the ultrasonic vibrator 11. The ultrasonic vibrator 11 can drive the oil-water mixed liquid in the stratification tank 7 to vibrate rapidly and at high frequency, so that the oil and water in the stratification tank 7 are quickly separated, and the oil droplets with lower density move up quickly, and the water droplets with larger density move down quickly, so that the oil-water mixed liquid is stratified in the stratification tank 7, and the upper layer of oil fills the partition plate 13 and falls into the oil drain tank 8, and is discharged from the oil-water separation box 2 through the oil outlet pipe 4, and the lower layer of water is discharged into the separation shell 1 through the drain pipe 16.

[0031] The bottom wall of the stratified groove 7 is provided with a drain pipe 16, which is fixedly connected to the bottom wall of the stratified groove 7 by welding or the like. A switch assembly is provided in the drain pipe 16, and the switch assembly includes a connecting plate 18, a plug 15 and a telescopic rod 17. The switch assembly can also be set as an electric valve. The connecting plate 18 is fixedly connected to the oil-water separation box 2 by setting a connecting column and bolts or the like. The telescopic rod 17 is set on the connecting plate 18 and is fixedly connected to the connecting plate 18 by setting bolts or the like. The telescopic rod 17 can be CDH1SERIE 3X of Bosch Rexroth. KONFIG hydraulic cylinder, the plug 15 is arranged in the drain pipe 16 and connected to the connecting rod, the plug 15 is fixedly connected by setting screws, etc., so that when the telescopic rod 17 is extended, the plug 15 can be driven to leave the drain pipe 16 to discharge the water in the stratification tank 7, and when the telescopic rod 17 is shortened, the plug 15 is driven to enter the drain pipe 16 to stop discharging the water in the stratification tank 7. The top wall of the oil-water separation box 2 is provided with an exhaust pipe 10, and the exhaust pipe 10 is fixedly connected to the top wall of the oil-water separation box 2 by welding, etc. When the ultrasonic vibrator 11 drives the oil-water separation box 2 to vibrate, the gas in the oil-water mixed liquid is also discharged. After vibration, the exhaust pipe 10 discharges the vibrated gas out of the oil-water separation box 2. The separation shell 1 is provided with a drain pipe 12 for discharging the gas and liquid in the separation shell 1. The drain pipe 12 is provided with a valve 19 for opening or closing the drain pipe 12. Because the separation shell 1 receives the water discharged from the stratification tank 7, and because there is a small amount of oil in the water, it is stratified in the separation shell 1. After the water is discharged through the drain pipe 12 by opening the valve 19, the oil in the separation shell 1 is recovered. Tempered glass can be provided on the side walls of the separation shell 1 and the oil-water separation box 2 to observe the oil-water separation situation in the oil-water separation box 2.

[0032] Working principle: When in use, the feed pipe 3 feeds the oil-water mixed liquid into the buffer tank 6, and the oil-water mixed liquid in the buffer tank 6 overflows the partition plate 13 and flows into the stratified feeding pipe 20, and the oil-liquid separation pipe is slowly discharged into the stratification tank 7 through multiple outlets on the stratified feeding pipe 20, and the ultrasonic vibrator 11 is started. The ultrasonic vibrator 11 can drive the oil-water mixed liquid in the stratification tank 7 to vibrate rapidly and at high frequency, so that the oil and water in the stratification tank 7 are quickly separated, and the oil-water mixed liquid is stratified in the stratification tank 7 into an upper oil layer 110 and a lower water layer 120, so that the upper oil overflows the oil separation plate 21 and falls into the oil drain tank 8, and is discharged from the oil-water separation box 2 through the oil outlet pipe 4, and the lower water is discharged into the separation shell 1 through the drain pipe 16. The discharged water will have a small amount of oil, so that after it is stratified in the separation shell 1, the water is discharged through the drain pipe 12 by opening the valve 19, and the oil in the separation shell 1 is recovered.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-water separation device for petroleum production, characterized in that: include: A separation shell, wherein a feed pipe and an oil outlet pipe are inserted into the separation shell; An oil-water separation box, the oil-water separation box is arranged in the separation shell, connected to the separation shell by arranging a vibration spring, the feed pipe and the oil outlet pipe pass through the outer wall of the oil-water separation box and extend into the oil-water separation box, and a flexible waterproof sheet for preventing the oil-water separation box from driving the feed pipe and the oil outlet pipe to vibrate is arranged at the connection between the feed pipe and the oil outlet pipe and the side wall of the oil-water separation box; as well as A separation component, the separation component includes a partition plate and an oil separator plate arranged in the oil-water separation box, the partition plate and the oil separator plate divide the oil-water separation box into a buffer tank, a stratification tank and an oil drain tank, the bottom wall of the stratification tank is provided with a drain pipe, the height of the partition plate is higher than the height of the oil separator plate, the partition plate is provided with a stratification feeding pipe, the bottom wall of the stratification tank is provided with an ultrasonic vibrator, the feeding pipe is used to feed the oil-water mixed liquid into the buffer tank, the oil-water mixed liquid decelerated by the buffer tank is fed into the stratification tank in layers through the stratification feeding pipe, the ultrasonic vibrator drives the oil-water mixed liquid in the stratification tank to vibrate, the oil-water mixed liquid in the stratification tank is quickly stratified, water is discharged from the drain pipe, and the oil flows over the oil separator plate into the oil drain tank and is discharged from the oil outlet pipe.

2. The oil-water separation device for petroleum production according to claim 1, characterized in that: The top wall of the oil-water separation box is provided with an exhaust pipe for discharging the vibrated gas out of the oil-water separation box.

3. The oil-water separation device for petroleum production according to claim 1, characterized in that: The oil-water separation box is provided with a filter cover for filtering dirt in the oil-water mixed liquid discharged from the feed pipe and for buffering the oil-water mixed liquid.

4. The oil-water separation device for petroleum production according to claim 1, characterized in that: The separation shell is provided with a drain pipe for discharging gas and liquid in the separation shell, and the drain pipe is provided with a valve for opening or closing the drain pipe.

5. The oil-water separation device for petroleum production according to claim 1, characterized in that: A switch assembly is arranged in the drain pipe, and the switch assembly includes a connecting plate arranged on the outer wall of the oil-water separation box and covering the drain pipe, a plug inserted in the drain pipe, and a telescopic rod arranged on the connecting plate and connected to the plug.

6. The oil-water separation device for petroleum production according to claim 5, characterized in that: The telescopic rod is used to drive the plug to extend out of the drain pipe to drain the water in the stratification groove.

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