A three-phase separator

Abstract

The utility model relates to three -phase separator technical field especially is three -phase separator, including jar body, the both sides of jar body top wall are provided with feed inlet and gas outlet respectively, and the rear end of jar body bottom wall is provided with oil outlet and water outlet respectively, jar body bottom wall sets up the cross groove, the cross groove top sets up the angle board, and the opposite two side walls of angle board set up a plurality of sand holes, and jar body bottom sets up the sand trap, and the front end of sand trap bottom wall sets up the sand accumulation funnel, and the rear side wall of sand trap sets up the water pump, and the water pump is used for to the sand trap flush, makes the sandstone temporary in the sand accumulation funnel, the device saves time and labour to clear sand, saves water resources.

Description

Technical Field

[0001] This utility model relates to the field of three-phase separator technology, and in particular to a three-phase separator. Background Technology

[0002] In the process of oil extraction, it is necessary to separate the three phases of oil, gas and water in crude oil. The commonly used equipment is the horizontal three-phase separator, which uses the principle that the oil, gas and water in crude oil have different densities to allow them to settle naturally in the three-phase separator to achieve the effect of three-phase separation.

[0003] Crude oil contains not only oil, gas, and water, but also a certain amount of sand and gravel. Under the influence of gravity, the sand and gravel will settle at the bottom of the three-phase separator tank. As the three-phase separator operates for a longer period of time, the sand layer becomes thicker and thicker, not only encroaching on the liquid space in the three-phase separator, but also blocking part of the flow channel of the coalescing plate, which seriously affects the oil-water separation effect. Generally, the bottom of the three-phase separator tank is equipped with a sand discharge port. After the three-phase separator has been working for a period of time, the feeding needs to be stopped and the tank needs to be flushed with a high-pressure nozzle. However, due to the thick sand layer, long deposition time, and large sand layer area, the sand flushing requires a lot of time, water, and energy. The excessively long sand cleaning time affects normal production and makes the separation efficiency of the three-phase separator low.

[0004] Therefore, this application provides a three-phase separator to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a three-phase separator that solves the problems of time-consuming and labor-intensive sand removal, as well as the large amount of water and energy consumed by existing three-phase separators.

[0006] To solve the above-mentioned technical problems, this utility model provides a three-phase separator, including a tank body. The top wall of the tank body is provided with a feed inlet and an air outlet on both sides, and the bottom wall of the tank body is provided with an oil outlet and a water outlet at the rear end. The bottom wall of the tank body is provided with a horizontal groove, and an angle plate is provided above the horizontal groove. Several sand inlet holes are provided on the opposite side walls of the angle plate. A sand settling box is provided at the bottom of the tank body. A sand accumulation funnel is provided at the front end of the bottom wall of the sand settling box. A water pump is provided on the rear side wall of the sand settling box. The water pump is used to flush the sand settling box and temporarily store the sand in the sand accumulation funnel.

[0007] A further improvement of this utility model is that two coalescing plates and an oil-water separation weir plate are arranged sequentially from front to back inside the tank, so that the inner cavity of the tank is divided into an oil-water mixing zone, an oil-water separation zone, a water chamber, and an oil chamber.

[0008] A further improvement of this utility model is that a transverse groove is provided on the bottom wall of the tank, the width of the transverse groove is 10~20cm, and the length of the transverse groove extends from the middle of the oil-water mixing zone through the oil-water separation zone to the water chamber.

[0009] A further improvement of the present invention is that a corner plate is provided directly above the transverse groove, the corner plate completely covers the transverse groove, and several semi-circular sand inlet holes are provided on the opposite side walls of the corner plate.

[0010] A further improvement of this utility model is that the sedimentation box is a U-shaped box, the length of which is slightly greater than the length of the transverse groove, and the width of which is greater than the width of the transverse groove, for receiving settled sand and gravel.

[0011] A further improvement of this utility model is that a water pump is installed on the rear side wall of the sedimentation box, the inlet pipe of the water pump extends into the water chamber, and the outlet pipe of the water pump extends into the sedimentation box.

[0012] A further improvement to the technical solution of this utility model is that a sand-cleaning switch is provided at the lower end of the sand accumulation funnel.

[0013] A further improvement of the present invention is that the coalescing plate is composed of several layers of corrugated plates stacked in the form of crests to troughs, and the corrugated plate material is carbon fiber reinforced polymer composite material.

[0014] A further improvement of this utility model is that a triangular notch is provided at the edge of the coalescing plate, and the triangular notch is adapted to the through corner plate.

[0015] A further improvement of this utility model is that an inlet distributor is installed below the feed inlet inside the tank, and the outlet is connected to the gas collection hood inside the tank.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects: 1. This utility model provides a three-phase separator, in which a sedimentation box is provided at the bottom of the tank to receive the sand and gravel that naturally settle in the tank, reducing the adverse effects of the sand and gravel on the tank. A water pump is provided at the rear end of the sedimentation box to draw clean water from the water chamber to rinse the sedimentation box. During the operation of the three-phase separator, the water pump works continuously to keep the water flow in the sedimentation box. The settled sand and gravel flow into the sand accumulation funnel with the water flow. After the three-phase separator has been working for a period of time, only the sand accumulation funnel needs to be cleaned, which improves the sand cleaning efficiency.

[0017] 2. The present invention provides a three-phase separator, wherein a horizontal groove is provided at the bottom of the tank, and a corner plate is covered on the horizontal groove. Sand inlet holes are opened on the opposite side walls of the corner plate, so that the sand and gravel that sinks down can pass through the sand inlet holes and the horizontal groove and finally fall into the sand settling box. The corner plate separates the liquid in the tank from the water flow in the sand settling box. The water flow direction in the sand settling box is opposite to the liquid flow direction in the tank and remains relatively stable.

[0018] 3. The three-phase separator provided by this utility model has a sand accumulation funnel with a cylindrical structure that is larger at the top and smaller at the bottom. A sand cleaning switch is provided at the bottom of the sand accumulation funnel. During cleaning, simply open the sand cleaning switch, and the sand and gravel will be automatically discharged under the action of gravity. Finally, only the residual sand and gravel at the front end of the tank needs to be rinsed and discharged. In addition, the water filtered from the water chamber pumped by the water pump realizes the recycling of water resources and saves water resources. Compared with the traditional sand cleaning method, the sand cleaning time is shortened and the labor intensity is reduced. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a three-phase separator. Figure 2 for Figure 1 Cross-sectional plan view; Figure 3 for Figure 1 Cross-sectional perspective view; Figure 4 This is a top view of the bottom wall of the tank; Figure 5 This is a schematic diagram of the corner plate. Figure 6 This is a schematic diagram of the corrugated plate structure.

[0021] Reference numerals: 1. Tank body; 2. Sand settling box; 3. Sand accumulation funnel; 31. Sand cleaning switch; 4. Water pump; 41. Water inlet pipe; 42. Drain pipe; 5. Feed inlet; 6. Water outlet; 7. Oil outlet; 8. Gas outlet; 9. Coalescing plate; 91. Corrugated plate; 92. Triangular notch; 10. Inlet distributor; 11. Oil-water separation weir plate; 12. Gas collection hood; 13. Horizontal trough; 14. Angle plate; 15. Sand inlet hole; 20. Oil-water mixing zone; 30. Oil-water separation zone; 40. Water chamber; 50. Oil chamber. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will be further explained below with reference to specific embodiments.

[0026] like Figures 1-6 As shown, this embodiment provides a three-phase separator, including a tank 1. A feed inlet 5 and an air outlet 8 are respectively provided on both sides of the top wall of the tank 1. An oil outlet 7 and a water outlet 6 are respectively provided at the rear end of the bottom wall of the tank 1. A transverse groove 13 is provided on the bottom wall of the tank 1, and an angle plate 14 is provided above the transverse groove 13. Several sand inlet holes 15 are provided on the opposite side walls of the angle plate 14. A sand settling box 2 is provided at the bottom of the tank 1. A sand accumulation funnel 3 is provided at the front end of the bottom wall of the sand settling box 2. A water pump 4 is provided on the rear side wall of the sand settling box 2. The water pump 4 is used to flush the sand settling box 2, so that the sand is temporarily stored in the sand accumulation funnel 3. Specifically, the transverse groove 13 is formed on the bottom wall of the tank 1, and the transverse groove 13 is long... The flow path extends from the oil-water mixing zone 20 to the water chamber 40. A sand settling box 2 is installed below the transverse groove 13 on the outer side of the bottom wall of the tank body 1. An angle plate 14 is installed above the transverse groove 13. Sand inlet holes 15 are provided on the two opposite side walls of the angle plate 14. The angle plate 14 divides the inner cavity of the tank body 1 and the sand settling box 2 into two relatively independent spaces. The drain pipe 42 of the water pump 4 extends to the rear end of the sand settling box 2. The water pump 4 continuously draws clean water from the water chamber 40 and washes the sand and gravel from the rear end of the sand settling box 2, so that the continuously falling sand and gravel enter the sand accumulation funnel 3, thereby reducing the adverse effects of sand and gravel on the tank body 1. The sand and gravel collected in the sand accumulation funnel 3 are better concentrated for cleaning.

[0027] like Figures 3-5As shown, in this embodiment, two coalescing plates 9 and an oil-water separation weir plate 11 are arranged sequentially from front to back inside the tank 1, dividing the inner cavity of the tank 1 into an oil-water mixing zone 20, an oil-water separation zone 30, a water chamber 40, and an oil chamber 50; a transverse groove 13 is provided on the bottom wall of the tank 1, the width of the transverse groove 13 is 10~20cm, and the length of the transverse groove 13 extends from the middle of the oil-water mixing zone 20 through the oil-water separation zone 30 to the water chamber 40; a corner plate 14 is provided directly above the transverse groove 13, the corner plate 14 completely covers the transverse groove 13, and several semi-circular sand inlet holes 15 are provided on the opposite side walls of the corner plate 14; specifically, the transverse groove 13 is opened on the bottom wall of the tank 1, making the tank 1 The inner cavity is connected to the settling box 2, which facilitates the discharge of sand and gravel from the tank 1 to the settling box 2. The front end of the transverse groove 13 starts from the middle of the oil-water mixing zone 20 to avoid the crude oil entering from the feed inlet 5 having a large impact on the transverse groove 13, which would cause more crude oil to enter the settling box 2. An angle plate 14 is set above the transverse groove 13. The angle plate 14 can reduce the impact of the liquid in the tank 1 on the water flow in the settling box 2, so that the water flow direction in the settling box 2 is opposite to the liquid flow direction in the tank 1 and can maintain relative stability. Sand inlet holes 15 are opened on both sides of the angle plate 14, so that the sand and gravel that sinks in the inner cavity of the tank 1 can fall into the settling box 2 after passing through the sand inlet holes 15 and the transverse groove 13.

[0028] like Figure 2 As shown, in this embodiment, the sedimentation box (2) is a U-shaped box. The length of the sedimentation box (2) is slightly greater than the length of the transverse groove (13), and the width of the sedimentation box (2) is greater than the width of the transverse groove (13), which is used to receive the settled sand and gravel. A water pump (4) is installed on the rear side wall of the sedimentation box (2). The inlet pipe (41) of the water pump (4) extends into the water chamber (40), and the drain pipe (42) of the water pump (4) extends into the sedimentation box (2). A sand cleaning switch (31) is installed at the lower end of the sand accumulation funnel (3). Specifically, a sand accumulation funnel is installed at the front end of the bottom wall of the sedimentation box (2). The hopper 3, the sand settling box 2 and the sand accumulation funnel 3 are connected. A water pump (4) is installed on the rear side wall of the sand settling box (2) to draw clean water from the water chamber 40 to the rear end of the sand settling box 2, so that a water flow opposite to the liquid flow direction of the tank 1 is formed in the sand settling box 2, continuously flushing the settled sand and gravel into the sand accumulation funnel 3. When cleaning the sand, just open the sand cleaning switch 31, and the sand and gravel will slide down and be discharged naturally under the action of gravity. Finally, just rinse the oil-water mixing zone 20 to complete the sand cleaning operation, saving water resources, shortening the sand cleaning time and greatly reducing the labor intensity.

[0029] like Figure 1 , Figure 6As shown, in this embodiment, the coalescing plate 9 is composed of several layers of corrugated plates 91 stacked in a peak-to-trough manner. The corrugated plates 91 are made of carbon fiber reinforced polymer composite material. The edges of the coalescing plate 9 are provided with triangular notches 92, which are adapted to the through-angle plates 14. An inlet diverter 10 is provided below the feed inlet 5 inside the tank 1, and the air outlet 8 is connected to the gas collecting hood 12 inside the tank 1. Specifically, coalescing plates 9 are provided at 1 / 3 and 2 / 3 of the tank 1, respectively. The functions and principles of the coalescing plates 9, gas collecting hood 12 and inlet diverter 10 inside the tank 1 are the same as those in the traditional horizontal three-phase separator, and will not be repeated here. The coalescing plate 9 is composed of three layers of corrugated plates 91 stacked in a peak-to-trough manner. The corrugated plates 91 are made of carbon fiber reinforced polymer composite material. Compared with traditional stainless steel, the composite material corrugated plates 91 are more corrosion-resistant, deformation-resistant, and have a longer service life, thereby improving the working time of the three-phase separator.

[0030] This utility model provides a working principle of a three-phase separator: After the liquid enters the tank 1 through the inlet 5, the inlet distributor 10 achieves preliminary gas-liquid separation by changing the direction and speed of the liquid flow. The separated gas is discharged through the outlet 8 via the gas collection hood 12. After the liquid enters the oil-water mixing zone 20, some sand and gravel naturally settle to the bottom wall of the tank 1 under gravity, and enter the settling box 2 through the sand inlet holes 15 and the transverse groove 13 on both sides of the corner plate 14. As the liquid continues to flow forward, some sand and gravel enter the oil-water separation zone 30 with the liquid flow, where they settle to the bottom wall of the tank 1, and then enter the settling box 2 through the sand inlet holes 15 and the transverse groove 13. A small amount of sand and gravel settles and flows into the settling box 2 after flowing to the water chamber 40 with the liquid. In box 2, the liquid is separated into oil and water through two layers of coalescing plates 9. Finally, in water chamber 40, the lower layer is water and the upper layer is oil. The water pump 4 on the side wall of the sedimentation box 2 continuously pumps the clear water from the lower layer of the water chamber to the rear end of the sedimentation box 2, so that the water flow in the sedimentation box 2 forms a back-to-forward water flow, which continuously flushes the settled sand and gravel into the sand accumulation funnel 3. Finally, the upper oil layer flows to the oil chamber 50 through the oil-water separation weir plate 11 and is discharged through the oil outlet 7. The lower layer of water in water chamber 40 is discharged through the water outlet 6. After the three-phase separator has been working for a period of time, the feeding is stopped and the sand cleaning switch 31 is opened. The sand and gravel are discharged naturally downward under the action of gravity. Finally, only the oil-water mixing zone 20 needs to be rinsed to complete the sand cleaning.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A three-phase separator, characterized in that, The tank includes a tank body (1), with a feed inlet (5) and an air outlet (8) on both sides of the top wall of the tank body (1), and an oil outlet (7) and a water outlet (6) on the rear end of the bottom wall of the tank body (1); a horizontal groove (13) is provided on the bottom wall of the tank body (1), and a corner plate (14) is provided above the horizontal groove (13). Several sand inlet holes (15) are provided on the opposite side walls of the corner plate (14). A sand settling box (2) is provided at the bottom of the tank body (1), and a sand accumulation funnel (3) is provided at the front end of the bottom wall of the sand settling box (2). A water pump (4) is provided on the rear side wall of the sand settling box (2). The water pump (4) is used to flush the sand settling box (2) so that the sand is temporarily stored in the sand accumulation funnel (3). Two coalescing plates (9) and an oil-water separation weir plate (11) are arranged sequentially from front to back inside the tank (1), so that the inner cavity of the tank (1) is divided into an oil-water mixing zone (20), an oil-water separation zone (30), a water chamber (40), and an oil chamber (50); the coalescing plate (9) is composed of several layers of corrugated plates (91) stacked in the form of crest to trough, and the corrugated plate (91) is made of carbon fiber reinforced polymer composite material; the edge of the coalescing plate (9) is provided with a triangular notch (92), which is adapted to the through corner plate (14).

2. A three-phase separator according to claim 1, characterized in that, The bottom wall of the tank (1) is provided with a transverse groove (13). The width of the transverse groove (13) is 10~20cm. The length of the transverse groove (13) extends from the middle of the oil-water mixing zone (20) through the oil-water separation zone (30) to the water chamber (40).

3. A three-phase separator according to claim 2, characterized in that, An angle plate (14) is set directly above the transverse groove (13), and the angle plate (14) completely covers the transverse groove (13). Several semi-circular sand inlet holes (15) are set on the opposite side walls of the angle plate (14).

4. A three-phase separator according to claim 1, characterized in that, The settling box (2) is a U-shaped box. The length of the settling box (2) is slightly greater than the length of the transverse groove (13), and the width of the settling box (2) is greater than the width of the transverse groove (13). It is used to receive the settled sand and gravel.

5. A three-phase separator according to claim 4, characterized in that, A water pump (4) is installed on the rear side wall of the sedimentation box (2). The inlet pipe (41) of the water pump (4) extends into the water chamber (40), and the drain pipe (42) of the water pump (4) extends into the sedimentation box (2).

6. A three-phase separator according to claim 1, characterized in that, A sand-cleaning switch (31) is installed at the lower end of the sand-accumulating funnel (3).

7. A three-phase separator according to claim 1, characterized in that, An inlet distributor (10) is installed below the feed inlet (5) inside the tank (1), and the outlet (8) is connected to the gas collection hood (12) inside the tank (1).

Images