Three-phase separator

Abstract

The invention relates to the technical field of three-phase separators, in particular to a three-phase separator which comprises a tank body, an oil-gas fluid inlet pipe is arranged at the top of the tank body, and the end, extending into the tank body, of the oil-gas fluid inlet pipe is connected with an inlet pretreatment device which at least collides with fluid twice. An outlet of the inlet pretreatment device is communicated with the tank body, and a secondary separation mechanism is further arranged in the tank body. The fluid is subjected to at least two times of collision treatment through the inlet pretreatment device, the flow speed of the fluid is greatly reduced, meanwhile, the fluid is preliminarily crushed through collision with the inlet pretreatment device, gas and liquid separation is conducted on the fluid, preliminarily separated gas is greatly increased, and the flow speed of the fluid passing through the inlet pretreatment device is greatly reduced; the impact of fluid on the tank body is greatly reduced, the service life of the tank body is prolonged, and the technical problems that in the prior art, an energy dissipation flow guide device reduces the fluid flow speed and is poor in gas separation effect are solved.

Description

Technical Field

[0001] The invention relates to the technical field of three-phase separators, in particular to a three-phase separator. Background Art

[0002] The three-phase separator is a device that separates oil, gas and water by the principles of gravity separation and collision separation. The upper part of the inner cavity of the three-phase separator is a gas chamber, and the lower part is a liquid chamber. Under the action of gravity, the liquid is stored and the natural gas overflows.

[0003] For example, a Chinese patent with announcement number CN204208341U discloses an oil-gas-water three-phase separator for polymer flooding oil production, which includes a separator medium inlet, an energy dissipation and diversion device, a separator tank, a fixed sample viewing port, a separation filler, a wire mesh mist collector, a sand flushing system, a weir plate, a water level lifting device, etc. The energy dissipation and diversion device is designed to be installed at the internal inlet of the separator to effectively divert the medium and achieve preliminary oil-water separation. The energy dissipation and diversion device is designed to divert on both sides, and 6 to 8 diversion channels are arranged on each side.

[0004] The above-mentioned three-phase separator achieves the purpose of initially reducing the flow rate of the fluid, reducing the impact of the fluid on the tank body of the three-phase separator, and initially separating the gas through the collision between the energy dissipation and flow guiding device and the fluid. However, in actual use, the fluid only collides with the baffle on the energy dissipation and flow guiding device once and then flows out of the energy dissipation and flow guiding device. One collision has a poor deceleration effect on the fluid. At the same time, the number of collisions is only one, and the effect of separating the gas from the fluid due to the collision is not good. In addition, due to the poor deceleration effect, the flow rate of the fluid flowing out of the energy dissipation and flow guiding device is still very large, resulting in a relatively large impact of the fluid flowing out of the energy dissipation and flow guiding device on the tank body of the three-phase separator, affecting the service life of the tank body of the three-phase separator. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a three-phase separator, which solves the technical problem that the energy dissipation and flow guiding device in the prior art has poor effect in reducing the fluid flow rate and separating the gas.

[0006] The technical solution of the present invention is implemented as follows: a three-phase separator includes a tank body, a top of the tank body is provided with an oil and gas fluid inlet pipe, one end of the oil and gas fluid inlet pipe extending into the tank body is connected to an inlet pretreatment device that collides with the fluid at least twice, the outlet of the inlet pretreatment device is connected to the tank body, and a secondary separation mechanism is also provided in the tank body.

[0007] Preferably, the inlet pretreatment device comprises a pretreatment shell, the interior of the pretreatment shell is a cavity, at least two sets of energy dissipation and flow guiding structures are connected in the cavity, and the pretreatment shell is provided with an inlet connected to the oil and gas fluid inlet pipe and a fluid outlet for fluid outflow.

[0008] Preferably, the fluid outlet includes a pretreatment device air outlet arranged at the top of the pretreatment shell and a pretreatment device liquid outlet arranged at the bottom of the pretreatment shell. After the fluid passes through the energy dissipation and diversion structure, the liquid separated from the fluid flows out of the inlet and outlet pretreatment device along the liquid outlet of the pretreatment device, and the gas separated from the fluid flows out of the inlet and outlet pretreatment device along the air outlet of the pretreatment device.

[0009] Preferably, the energy dissipation and flow guiding structure comprises a support rod, the support rod is connected to the pre-treatment shell, and a louver plate for colliding with the fluid is provided on the support rod.

[0010] Preferably, in two adjacent groups of the energy dissipation and flow guiding structures, the spacing between adjacent louvers on the support rod closer to the oil and gas fluid inlet pipe is larger.

[0011] Preferably, on the energy dissipation and flow guide structure closest to the fluid outlet, the louvers are arranged upward along the fluid inflow direction, and the lowest end of the louvers in the energy dissipation and flow guide structure closest to the fluid outlet is connected to the support rod; on the energy dissipation and flow guide structure at other positions, the louvers are arranged downward along the fluid inflow direction, and the lowest end of the louvers in other positions is connected to the support rod.

[0012] Preferably, the inlet pretreatment device is located at the head of the tank body, the fluid outlet of the inlet pretreatment device is arranged perpendicular to the tank body, and the secondary separation mechanism includes a flow stabilizing device arranged inside the tank body, and the flow stabilizing device is located in the middle of the tank body.

[0013] Preferably, the flow stabilizing device divides the tank body into a first separation chamber and a second separation chamber, a demister is provided at the air outlet of the second separation chamber, an oil chamber and a water chamber are provided in the second separation chamber, the oil chamber is provided with an oil inlet connected to the second separation chamber, the oil chamber is also provided with a weir plate, the side wall of the water chamber is connected to the second separation chamber through a water pipe, and a manhole is provided on the tank body.

[0014] Preferably, the tank body is provided with three manholes, one of which is arranged at one end of the tank body close to the oil and gas fluid inlet pipe, and the other two manholes correspond to the oil chamber and the water chamber respectively.

[0015] Preferably, the flow stabilizing device is a separation plate that plays a role in eliminating foam, and the demister is a wire mesh demister.

[0016] The present invention sets an inlet pretreatment device at the inlet of the tank body to reduce the impact of the fluid at least twice. The fluid is subjected to at least two collision treatments through the inlet pretreatment device, which greatly reduces the flow rate of the fluid. At the same time, the fluid uses the collision with the inlet pretreatment device to complete the preliminary crushing of the fluid for gas and liquid separation. The gas initially separated in this application is also greatly increased, and the flow rate of the fluid passing through the inlet pretreatment device is greatly reduced. The impact of the fluid on the tank body of the three-phase separator is greatly reduced, which is beneficial to improving the service life of the tank body of the three-phase separator. Compared with the one deceleration treatment of the fluid in the cited documents, the deceleration effect of the inlet pretreatment device of this application is doubled, and the flow rate is greatly reduced. After the flow rate is greatly reduced, the foam generated by the fluid in the tank body of the three-phase separator is greatly reduced in comparison, and the separation effect of the three-phase separator is effectively improved, which solves the technical problem that the energy dissipation and diversion device in the prior art is not effective in reducing the fluid flow rate and separating gas. In the direction of fluid inflow, the louver plates on the energy dissipation and flow guiding structure closest to the fluid outlet are arranged upwards, and the energy dissipation and flow guiding structure arranged in this way is conducive to the separated liquid and gas flowing out along the liquid outlet and the gas outlet of the pretreatment device respectively, while the louver plates of the energy dissipation and flow guiding structure at other positions are arranged downwards, and this arrangement facilitates the continuous collision between the louver plates and the fluid, thereby improving the collision effect between the louver plates and the fluid. A flow stabilizing device and a demister are arranged in the tank body of the present invention, and the flow stabilizing device plays the role of eliminating foam, and the demister is arranged to prevent the discharge of liquid droplets entrained by gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the present invention.

[0019] Figure 2 It is a side view of the present invention.

[0020] Figure 3 It is a schematic diagram of the oil chamber and the water chamber of the present invention.

[0021] Figure 4 It is a top view of the inlet pretreatment device of the present invention.

[0022] Figure 5 It is a cross-sectional view of the inlet pretreatment device of the present invention.

[0023] In the figure, 1 is a tank body, 2 is an oil and gas fluid inlet pipe, 3 is an inlet pretreatment device, 31 is a pretreatment shell, 32 is a louver, 34 is a support rod, 35 is a fluid inlet pipe, 36 is an air outlet of the pretreatment device, 37 is a liquid outlet of the pretreatment device, 4 is a flange, 5 is a flow stabilizing device, 6 is a mist eliminator, 7 is an oil chamber, 8 is a manhole, 9 is a sand and sewage outlet, 10 is a water chamber, 11 is an oil outlet, 12 is a water outlet, 13 is a water guide pipe, 14 is an oil inlet, and 15 is a weir plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1, as Figure 1 and Figure 2 As shown, a three-phase separator comprises a tank body 1, wherein an oil and gas fluid inlet pipe 2 is provided on the top of the tank body 1, and one end of the oil and gas fluid inlet pipe 2 extending into the tank body 1 is connected to an inlet pretreatment device 3 which collides with the fluid at least twice, and an outlet of the inlet pretreatment device 3 is connected to the tank body 1, and a secondary separation mechanism is also provided in the tank body 1. The present invention sets an inlet pretreatment device at the inlet of the tank 1 body to reduce the collision of the fluid at least twice. The fluid is subjected to at least two collision treatments through the inlet pretreatment device, which greatly reduces the flow rate of the fluid. At the same time, the fluid uses the collision with the inlet pretreatment device to complete the preliminary crushing of the fluid to separate the gas and liquid. The gas initially separated in this application is also greatly increased, the flow rate of the fluid passing through the inlet pretreatment device is greatly reduced, and the impact of the fluid on the tank body 1 is greatly reduced, which is beneficial to improving the service life of the tank body 1. Compared with the one-time deceleration treatment of the fluid in the cited documents, the deceleration effect of the inlet pretreatment device of the present application is doubled, the flow rate is greatly reduced, and after the flow rate is greatly reduced, the foam generated by the fluid in the tank body 1 is greatly reduced in comparison, and the separation effect of the three-phase separator is effectively improved, solving the technical problem that the energy dissipation and diversion device in the prior art is not effective in reducing the fluid flow rate and separating the gas.

[0026] When Example 1 is implemented, the fluid pressure value flowing into the three-phase separator is generally close to 9 MPa. The high-pressure fluid flows into the inlet pretreatment device 3 through the oil and gas fluid inlet pipe 2. After at least two collisions in the inlet pretreatment device 3, the fluid flow rate is reduced. At the same time, the fluid is initially crushed by the collision with the inlet pretreatment device 3 to separate the gas and liquid. The liquid flows into the lower part of the tank body 1 along the liquid outlet of the inlet pretreatment device 3, and the gas reaches the upper part of the tank body 1 along the gas outlet of the inlet pretreatment device 3. The gas and liquid are further filtered and separated by the secondary separation mechanism in the tank body 1.

[0027] Embodiment 2, on the basis of embodiment 1, as Figure 1 , Figure 4 and Figure 5 As shown, the inlet pre-treatment device 3 includes a pre-treatment shell 31, the interior of the pre-treatment shell 31 is a cavity, at least two groups of energy dissipation and flow guiding structures are connected to the cavity, and the pre-treatment shell 31 is provided with an inlet connected to the oil and gas fluid inlet pipe 2 and a fluid outlet for the fluid to flow out. The fluid enters the inlet pre-treatment device 3 from the oil and gas fluid inlet pipe 2, and after collision and deceleration by at least two groups of energy dissipation and flow guiding structures, the fluid flows into the tank body 1 along the fluid outlet.

[0028] Embodiment 3, on the basis of embodiment 2, as Figure 4 and Figure 5 As shown, the fluid outlet includes a pre-treatment device gas outlet 36 arranged at the top of the pre-treatment shell 31 and a pre-treatment device liquid outlet 37 arranged at the bottom of the pre-treatment shell 31. After the fluid passes through the energy dissipation and diversion structure, the liquid separated from the fluid flows out of the inlet pre-treatment device 3 along the pre-treatment device liquid outlet 37, and the gas separated from the fluid flows out of the inlet pre-treatment device 3 along the pre-treatment device gas outlet 36. The fluid enters the inlet pre-treatment device 3 from the oil and gas fluid inlet pipe 2, and after collision and deceleration by at least two sets of energy dissipation and diversion structures, the gas separated from the fluid flows out along the pre-treatment device gas outlet 36, and the liquid separated from the fluid flows out along the pre-treatment device liquid outlet 37, wherein the pre-treatment device gas outlet 36 is arranged above the pre-treatment shell 31, and the pre-treatment device liquid outlet 37 is arranged below the pre-treatment shell 31, so that the natural gas rises and separates under the action of gravity, and the oil-water mixture falls from the pre-treatment device liquid outlet 37 into the tank body 1.

[0029] Embodiment 4, on the basis of embodiment 3, as Figure 4 and Figure 5As shown, the energy dissipation and flow guiding structure includes a support rod 34, which is connected to the pre-processing shell 31, and a louver plate 32 for bearing the impact of the fluid is provided on the support rod 34. The setting of the support rod 34 facilitates the fixed installation of the louver plate 32 in the pre-processing shell 31, and the louver plate 32 initially decelerates the fluid and collides with the fluid through the louver plate 32, and initially separates the three phases of oil, gas and water, which is beneficial to the subsequent separation work of the three-phase separator.

[0030] Embodiment 5, on the basis of embodiment 4, as Figure 4 and Figure 5 As shown, in the two adjacent groups of the energy dissipation and flow guiding structures, the spacing between the adjacent louvers 32 on the support rod 34 closer to the oil and gas fluid inlet pipe 2 is larger. That is, the louvers 32 arranged on the support rod 34 closer to the oil and gas fluid inlet pipe 2 are more sparse, which avoids the situation that the louvers 32 close to the oil and gas fluid inlet pipe 2 are densely arranged, resulting in excessive obstruction to the fluid, which is not conducive to the passage of the fluid, and when densely arranged, the impact surface of the energy dissipation and flow guiding structure is too large, which easily causes the support rod 34 or the louver 32 to break. Along the inflow direction of the fluid, the arrangement of the louver 32 gradually changes from sparse to dense.

[0031] Embodiment 6, on the basis of embodiment 5, as Figure 4 and Figure 5 As shown, on the energy dissipation and flow guiding structure closest to the fluid outlet, the louver plates 32 are arranged upward along the fluid inflow direction, and the lowest end of the louver plates 32 of the energy dissipation and flow guiding structure closest to the fluid outlet is connected to the support rod 34; on the energy dissipation and flow guiding structure at other positions, the louver plates 32 are arranged downward along the fluid inflow direction, and the lowest ends of the louver plates 32 at other positions are connected to the support rod 34. In the fluid inflow direction, the louver plates 32 on the energy dissipation and flow guiding structure closest to the fluid outlet are arranged upward, and the energy dissipation and flow guiding structure arranged in this way is conducive to the separated liquid and gas flowing out along the pre-treatment device liquid outlet 37 and the pre-treatment device gas outlet 36 respectively, while the louver plates 32 of the energy dissipation and flow guiding structure at other positions are arranged downward, and this arrangement facilitates the continuous collision between the louver plates 32 and the fluid, thereby improving the collision effect between the louver plates 32 and the fluid.

[0032] Embodiment 7, on the basis of any one of Embodiments 1 to 6, as Figure 4 and Figure 5As shown, the inlet pretreatment device 3 is located at the head of the tank body 1, and the fluid outlet of the inlet pretreatment device 3 is arranged vertically with the tank body 1. The secondary separation mechanism includes a flow stabilizing device 5 arranged inside the tank body 1, and the flow stabilizing device 5 is located in the middle of the tank body 1. The fluid outlet of the inlet pretreatment device 3 is arranged vertically with the tank body 1, and the inlet pretreatment device 3 and the flow stabilizing device 5 are respectively located at the head and the middle of the tank body 1, which ensures that the liquid flows out along the pretreatment device outlet 37 and falls into the tank body 1 without impacting the flow stabilizing device 5, because although the liquid flowing out of the pretreatment device outlet 37 is decelerated, its flow rate is still not small. Once the liquid flowing out of the pretreatment device outlet 37 impacts the flow stabilizing device 5, it may affect the flow stabilizing device 5 to perform secondary separation on the liquid, or even impact and damage the flow stabilizing device 5. The setting position of the inlet pretreatment device 3 of the present application avoids the situation where the liquid flowing out of the inlet pretreatment device 3 impacts the flow stabilizing device 5, thereby improving the service life of the three-phase separator.

[0033] Embodiment 8, based on embodiment 7, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the secondary separation mechanism includes a flow stabilizing device 5 arranged inside the tank body 1, the flow stabilizing device 5 divides the tank body 1 into a first separation chamber and a second separation chamber, a demister 6 is arranged at the gas outlet of the second separation chamber, an oil chamber 7 and a water chamber 10 are arranged in the second separation chamber, the oil chamber 7 is provided with an oil inlet 14 communicating with the second separation chamber, the oil chamber 7 is also provided with a weir plate 15, the side wall of the water chamber 10 is communicated with the second separation chamber through a water guide pipe, and a manhole 8 is arranged on the tank body 1. The initially separated fluid reaches the first separation chamber through the gas outlet 36 of the pretreatment device, and after further screening and separation by the flow stabilizing device 5, the gas escapes and rises, the liquid passes through the flow stabilizing device 5, and the gas and liquid both enter the second separation chamber, the gas passes through the demister 6 and flows out of the three-phase separator, and the liquid is separated into oil and water layers after two separations, the oil layer is at the top, and the water layer is at the bottom, the oil passes over the weir plate 15, enters the oil chamber 7 along the oil inlet 14 for storage, and the water enters the water chamber 10 along the water guide pipe.

[0034] Embodiment 9, based on embodiment 8, as Figure 1 and Figure 2As shown, the tank body 1 is provided with three manholes 8, one of which is arranged at one end of the tank body 1 near the oil and gas fluid inlet pipe 2, and the other two manholes 8 correspond to the oil chamber 7 and the water chamber 10 respectively. The oil chamber 7 and the water chamber 10 are provided with manholes 8 respectively, which is convenient for direct maintenance of the oil chamber 7 and the water chamber 10, thereby improving the convenience of maintenance. The oil chamber 7 is provided with an oil outlet 11, and the water chamber 10 is provided with a water outlet 12. The tank body 1 is provided with a sand discharge and sewage outlet 9, and the sand discharge and sewage outlet 9, the water chamber 10, the oil outlet 11 and the water outlet 12 are respectively connected to corresponding pipelines, and the pipelines are provided with a liquid level meter, a tuning fork liquid level switch, an electric ball valve and an electric liquid level regulating valve for emergency shutdown. The arrangement of the sand discharge and sewage outlet 9, the water chamber 10, the oil outlet 11 and the water outlet 12 facilitates the discharge of the substances separated from the fluid by the three-phase separator from the tank body 1, thereby ensuring the orderly progress of the entire separation work. The setting of liquid level meter, tuning fork liquid level switch, electric ball valve with emergency shutdown and electric liquid level regulating valve facilitates the controllable operation of separation. The electric ball valve model is Q941F-900LB, and the liquid level meter is a magnetic liquid level meter, and the model of the magnetic liquid level meter is UHZ-125402A.

[0035] Embodiment 10, based on embodiment 9, as Figure 1 and Figure 2 As shown, the flow stabilizing device 5 is a separation plate that eliminates foam. The separation plate adopts a 250Y corrugated plate with fillers inside. The demister 6 is a wire mesh demister. When the gas-liquid mixed fluid that has not been separated cleanly rushes from the separator inlet enters the separation plate, the droplets in the gas collide with the plate of this device and are further crushed and separated. Moreover, since the flow rate between the separation plates is increased, the high-speed liquid flow collides with the plate wall, and a more thorough separation is obtained. The separated droplets gather on the separation plate and sink down into the liquid along the plate wall of the coalescing plate. At the same time, a layer of gas bubbles that have not escaped from the oil at the oil-gas interface will also collide with the plate wall of the separation plate and break when passing through the separation plate due to the increase in flow rate. The gas will then escape and rise from the foam. Therefore, the device can remove foam from the oil and remove gas from the foam. The demister 6 is set to prevent the gas from entraining droplets and discharging. The reason for choosing a wire mesh demister is that it is composed of a metal mesh filler, an arch plate and blades. The metal mesh filler is cylindrical and is wound with stainless steel wire braid. The droplets collide with the metal mesh and coalesce and settle downward, thereby eliminating the discharge of gas-entrained droplets.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-phase separator, comprising a tank (1), characterized in that: An oil and gas fluid inlet pipe (2) is provided at the top of the tank body (1); one end of the oil and gas fluid inlet pipe (2) extending into the tank body (1) is connected to an inlet pre-treatment device (3) that collides with the fluid at least twice; the outlet of the inlet pre-treatment device (3) is connected to the tank body (1); and a secondary separation mechanism is also provided in the tank body (1).

2. The three-phase separator according to claim 1, characterized in that: The inlet pre-treatment device (3) comprises a pre-treatment shell (31), the interior of the pre-treatment shell (31) is a cavity, at least two groups of energy dissipation and flow guiding structures are connected in the cavity, and the pre-treatment shell (31) is provided with an inlet connected to the oil and gas fluid inlet pipe (2) and a fluid outlet for fluid to flow out.

3. The three-phase separator according to claim 2, characterized in that: The fluid outlet comprises a pretreatment device gas outlet (36) arranged at the top of the pretreatment shell (31) and a pretreatment device liquid outlet (37) arranged at the bottom of the pretreatment shell (31); after the fluid passes through the energy dissipation and flow guiding structure, the liquid separated from the fluid flows out of the inlet pretreatment device (3) along the pretreatment device liquid outlet (37), and the gas separated from the fluid flows out of the inlet pretreatment device (3) along the pretreatment device gas outlet (36).

4. The three-phase separator according to claim 3, characterized in that: The energy dissipation and flow guiding structure comprises a support rod (34), the support rod (34) being connected to the pre-treatment shell (31), and a louver plate (32) for colliding with the fluid is provided on the support rod (34).

5. The three-phase separator according to claim 4, characterized in that: In two adjacent groups of the energy dissipation and flow guiding structures, the spacing between adjacent louver plates (32) on the support rod (34) closer to the oil and gas fluid inlet pipe (2) is larger.

6. The three-phase separator according to claim 5, characterized in that: On the energy dissipation and flow guiding structure closest to the fluid outlet, the louver plates (32) are arranged upward along the fluid inflow direction, and the lowest end of the louver plates (32) on the energy dissipation and flow guiding structure closest to the fluid outlet is connected to the support rod (34); on the energy dissipation and flow guiding structures at other positions, the louver plates (32) are arranged downward along the fluid inflow direction, and the lowest ends of the louver plates (32) at other positions are connected to the support rod (34).

7. The three-phase separator according to any one of claims 1 to 6, characterized in that: The inlet pretreatment device (3) is located at the head of the tank body (1), and the fluid outlet of the inlet pretreatment device (3) is arranged perpendicular to the tank body (1). The secondary separation mechanism comprises a flow stabilizing device (5) arranged inside the tank body (1), and the flow stabilizing device (5) is located in the middle of the tank body (1).

8. The three-phase separator according to claim 7, characterized in that: The flow stabilizing device (5) divides the tank body (1) into a first separation chamber and a second separation chamber, a demister (6) is provided at the air outlet of the second separation chamber, an oil chamber (7) and a water chamber (10) are provided in the second separation chamber, an oil inlet (14) communicating with the second separation chamber is provided on the oil chamber (7), a weir plate (15) is also provided on the oil chamber (7), a side wall of the water chamber (10) is communicated with the second separation chamber via a water conduit, and a manhole (8) is provided on the tank body (1).

9. The three-phase separator according to claim 8, characterized in that: The tank body (1) is provided with three manholes (8), one of which is arranged at one end of the tank body (1) close to the oil and gas fluid inlet pipe (2), and the other two manholes (8) correspond to the oil chamber (7) and the water chamber (10), respectively.

10. The three-phase separator according to claim 9, characterized in that: The flow stabilizing device (5) is a separation plate that plays a role in eliminating foam, and the demister (6) is a wire mesh demister.

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