Gas-liquid separation device, oil-gas multiphase pump and application method of gas-liquid separation device

Abstract

The invention relates to the technical field of oil exploitation, and provides a gas-liquid separation device, an oil-gas multiphase pump and a gas-liquid separation device application method.The gas-liquid separation device comprises a sleeve, an input pipe, a gas inlet pipe fitting, a flow dividing assembly and an expansion assembly, and the two ends of the sleeve are communicated; one end of each of the input pipe and the air inlet pipe is communicated with the outside, and one end of each of the input pipe and the air inlet pipe is positioned in the sleeve and arranged oppositely; the shunting assembly is arranged between the input pipe and the end part of the air inlet pipe fitting; the expansion assembly is arranged between the flow dividing assembly and the input pipe and used for adjusting the opening degree between the flow dividing assembly and the input pipe. A gas sensor is arranged in the sleeve, or a pressure sensor is arranged in the input pipe. According to the gas-liquid separator, the input pipe and the gas inlet pipe fitting are installed through the sleeve, the flow dividing assembly is arranged, therefore, gas and liquid can be input into the sleeve, flow dividing is conducted under guiding of the flow dividing assembly, gas-liquid separation is completed, and the gas-liquid separator has the advantages of being simple in structure, small in size and convenient to apply.

Description

Technical Field

[0001] The present invention relates to the technical field of oil extraction, and in particular to a gas-liquid separation device, an oil-gas mixed transmission pump and an application method of the gas-liquid separation device. Background Art

[0002] An oil-gas mixed flow pump is a pump specially used to transport crude oil output. According to different structures, the current mixed flow pumps are mainly divided into single-screw pumps, twin-screw pumps and reciprocating oil-gas mixed flow pumps, which can handle crude oil containing gas, water, sand and other substances.

[0003] During the application process, since the pump body is in a high-pressure state, the conveying medium is very easy to overflow; especially for reciprocating oil-gas mixed pumps, when it is in action, the conveyed medium is easy to overflow between the plunger and the sealing packing, mainly gaseous medium and liquid medium; the gaseous medium contains a large amount of hydrogen sulfide, which is a highly toxic gas, and the liquid medium is a mixture of water, oil, etc., as well as lubricating oil for lubrication. Therefore, in order to avoid personal injury and environmental pollution, the spillage needs to be cleaned up in time.

[0004] The invention patent application with the existing application publication number CN111437631A discloses a gas-liquid separation device and a separation method thereof, which relates to the field of petroleum and natural gas exploitation. The gas-liquid separation device comprises: a tank body, a liquid discharge port is arranged at the lower end of the tank body, and an air outlet port is arranged at the upper end of the tank body; a liquid inlet pipe extending into the tank body; an infrared transmitter arranged on the liquid inlet pipe, and the infrared transmitter is used to heat the gas in the gas-liquid mixed liquid flowing through the liquid inlet pipe; a centrifugal mechanism, which comprises: a drive shaft, a centrifugal impeller connected to the drive shaft, and the centrifugal impeller is arranged at the outlet of the liquid inlet pipe; a plasma generator, which is installed on the drive shaft; a liquid guide plate installed in the tank body, the liquid guide plate extends from the side wall of the liquid inlet pipe to the inner side wall of the tank body, and the liquid guide plate is used to receive the gas-liquid mixed liquid ejected from the centrifugal impeller; and a pulse vibrator arranged on the liquid guide plate.

[0005] As mentioned in the above technical solution, a gas-liquid separation device is mentioned, which uses a centrifugal method to achieve gas discharge. This is a common gas-liquid separation method, which usually requires a larger tank to set up a centrifugal mechanism and corresponding auxiliary components. Therefore, it is large in size and suitable for the separation of a large number of working media; but the medium flow overflowing from the sealing component of the oil-gas mixed pump is usually small and changes with the working pressure. The existing gas-liquid separation device is not applicable, so a simpler and more convenient gas-liquid separation device is needed. Summary of the invention

[0006] In view of this, the present invention proposes a gas-liquid separation device, an oil-gas mixed flow pump and a gas-liquid separation device application method which have a simple structure, small size and easy application, so as to solve the problem that the existing gas-liquid separation device is large in size and not suitable for the working conditions of the oil-gas mixed flow pump.

[0007] The technical solution of the present invention is achieved in this way:

[0008] In one aspect, the present invention provides a gas-liquid separation device, comprising a sleeve, an input pipe, an air intake pipe, a flow distribution component and a tightening component, wherein:

[0009] Both ends of the casing are connected;

[0010] The input pipe and the air intake pipe have one end connected to the outside, and one end located in the sleeve and arranged opposite to each other;

[0011] The flow splitter assembly is arranged between the input pipe and the end of the air intake pipe member;

[0012] The expansion assembly is arranged between the flow dividing assembly and the input pipe, and is used to adjust the opening between the flow dividing assembly and the input pipe;

[0013] A gas sensor is arranged in the casing, or a pressure sensor is arranged in the input pipe.

[0014] On the basis of the above technical solution, preferably, the flow splitter assembly includes a flow splitter and a first connecting rod, wherein:

[0015] The splitter body is arranged between the input pipe and the air intake pipe, and the end of the splitter body facing the input pipe and the air intake pipe is in a conical structure;

[0016] A plurality of first connecting rods are provided, one end of the first connecting rod is connected to the flow divider, and the other end of the first connecting rod is connected to the inner wall of the sleeve.

[0017] On the basis of the above technical solution, preferably, the flow dividing assembly further includes a flow limiting ring and a heating element, wherein:

[0018] The flow limiting ring is arranged at one end of the flow dividing body facing the air inlet pipe, and the diameter of the flow limiting ring is larger than the pipe diameter of the air inlet pipe;

[0019] One end of the flow limiting ring away from the flow divider is folded inwardly to accommodate the heating element.

[0020] On the basis of the above technical solution, preferably, the expansion assembly includes a ring seat, an air storage ring and an air filling tube, wherein:

[0021] The ring seat abuts against one end of the flow divider toward the input pipe;

[0022] The gas storage ring is arranged on the ring seat, and the gas storage ring abuts against the pipe opening of the input pipe;

[0023] The ring seat is provided with a through hole which is connected with the gas storage ring. One end of the gas charging tube is connected with the ring seat and connected with the through hole, and the other end thereof passes through the sleeve.

[0024] On the basis of the above technical solution, preferably, the expansion assembly further includes a ring sheet, the ring seat is an annular structure, and is provided with a tapered hole and an annular groove, wherein:

[0025] The inner wall of the tapered hole abuts against the distributor, and the end of the distributor extends into the interior of the input pipe;

[0026] The ring groove accommodates the gas storage ring;

[0027] The ring piece is connected to the gas storage ring and supports the flow divider.

[0028] On the basis of the above technical solution, preferably, an overflow member is further included, and the overflow member includes a first guide ring, a second guide ring and a second connecting rod, wherein:

[0029] The first guide ring is in a funnel-shaped structure, the large-diameter end of the first guide ring is connected to the inner wall of the sleeve, and the small-diameter end is in clearance with the intake pipe;

[0030] The second guide ring is in a funnel-shaped structure, the small-diameter end of the second guide ring is connected to the outer wall of the air intake pipe, and the large-diameter end is connected to the inner wall of the sleeve through a second connecting rod;

[0031] The small diameter end of the first guide ring extends into the interior of the second guide ring.

[0032] On the basis of the above technical solution, preferably, the air intake pipe comprises a conduit, a guide shell, a guide plate, an exhaust pipe and an axial flow fan, wherein:

[0033] One end of the catheter is connected to the outside world, and the other end corresponds to the shunt component;

[0034] The guide shell is arranged at the port of the conduit, and the guide shell is provided with an air outlet facing the overflow member;

[0035] The guide plate is connected to the guide shell and corresponds to the air outlet;

[0036] The drain pipe is arranged on a side of the second guide ring away from the first guide ring, and the drain pipe is connected with the guide tube and the sleeve;

[0037] The axial flow fan is arranged in the duct.

[0038] On the basis of the above technical solution, preferably, the casing comprises a plurality of pipe sections, the plurality of pipe sections are detachably connected and interpenetrate each other, wherein:

[0039] The input pipe and the expansion assembly are connected to the same pipe section;

[0040] The flow splitter assembly is connected to a pipe segment;

[0041] The overflow piece is connected to a pipe section;

[0042] The air inlet pipe fitting is connected to a pipe section.

[0043] On the other hand, the present invention provides an oil-gas mixed flow pump, comprising the above-mentioned gas-liquid separation device, wherein the sealing component of the oil-gas mixed flow pump is connected to the input pipe.

[0044] In another aspect, the present invention provides an application method of the above-mentioned gas-liquid separation device, comprising the following steps:

[0045] S1. Install a gas sensor in the casing, or install a pressure sensor in the input pipe.

[0046] S2. Connect the sealing part of the oil-gas mixed pump to the input pipe through the pipeline.

[0047] S3, place the gas-liquid separation device vertically, with the input pipe located on the upper side, connect the top pipe opening of the casing with the gas recovery and processing device, and connect the bottom pipe opening of the casing with the liquid storage tank,

[0048] S4, inflate the air storage ring through the air filling pipe to expand the air storage ring and seal the gap between the input pipe and the diversion component.

[0049] S5. As the oil-gas mixed pump works, the oil-gas medium conveyed under high pressure overflows through the sealing component and enters the input pipe.

[0050] S6. As the pressure in the input pipe increases, the gas storage ring is compressed, and the overflowed oil and gas medium enters the casing, wherein the liquid phase medium flows downward through the diversion component and enters the liquid storage tank, and the gas phase medium flows upward and enters the gas recovery and processing device;

[0051] When the gas sensor in the casing detects toxic gas, or the pressure sensor in the input pipe detects abnormal pressure changes, it means that the sealing effect of the sealing component of the oil-gas mixed transmission pump is poor or the sealing fails, and the air intake pipe is activated to input gas, improve gas flowability, and promote the discharge of overflowed gas;

[0052] When the sealing component of the oil-gas mixed transmission pump fails, the internal gas of the gas storage ring is emptied through the inflation pipe, and the opening between the diversion component and the input pipe is kept at the maximum to speed up the processing of the overflowed gas and liquid.

[0053] The gas-liquid separation device of the present invention has the following beneficial effects compared with the prior art:

[0054] (1) The inlet pipe and the air inlet pipe are installed by setting a casing, and a flow diversion component is provided, so that the gas and liquid can be input into the casing, and the flow is diverted under the guidance of the flow diversion component to complete the gas-liquid separation. It has the advantages of simple structure, small volume, good flow diversion effect and convenient application;

[0055] (2) An expansion assembly is also provided between the input pipe and the flow distribution assembly, which can adjust the gap opening to adapt to the gas-liquid processing of different flow rates; at the same time, the expansion assembly can cooperate with the gas sensor and the pressure sensor to realize the gas-liquid overflow detection, thereby coordinating the action of the intake pipe, which not only facilitates the discharge of gas, but also helps the staff to understand the working conditions in time, and is suitable for the treatment of liquid overflow from the oil-gas mixed transmission pump;

[0056] (3) The flow diversion component diverts the liquid through the diverter body, and the heating element is helpful to promote the precipitation of gas. When the air intake pipe fails, it can only rely on the heating element for heating. In this way, when the hot air flow rises, a negative pressure is naturally formed at the inlet of the air intake pipe, thereby ensuring the discharge of gas. At the same time, the flow diversion component is provided with a limiting flow ring, which can protect the heating element from contacting the liquid to ensure application safety.

[0057] (4) In the expansion assembly, the gas storage ring is inflated and deflated by the gas pipe, so that the opening between the shunt assembly and the input pipe can be adjusted to achieve adaptive adjustment; and the gas storage ring is elastic. When the pressure in the input pipe is too high, it can either enable the pressure sensor to complete the detection or be compressed to allow the gas and liquid to overflow. At this time, it can be detected by the gas detection device, and the application effect is excellent;

[0058] (5) The overflow member is provided with a funnel-shaped first guide ring and a second guide ring, which reduces the cross-section of the gas-liquid downward flow, and helps to prevent the gas from being discharged through the liquid outlet. At the same time, the small diameter end of the first guide ring extends into the interior of the second guide ring. When liquid accumulates in the second guide ring, the small diameter end of the first guide ring can be immersed, thereby achieving a self-sealing effect.

[0059] (6) The casing is composed of multiple pipe sections, and the inlet pipe, expansion assembly, diversion assembly and overflow parts are connected to the single pipe section according to the application layout, which forms a modular structure, facilitates the disassembly, maintenance and replacement of each part, and improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1 is a three-dimensional diagram of the gas-liquid separation device of the present invention;

[0062] Figure 2 It is a front view of the gas-liquid separation device of the present invention;

[0063] Figure 3 A top view of the gas-liquid separation device of the present invention;

[0064] Figure 4 For the present invention Figure 3 Sectional view along the AA direction;

[0065] Figure 5 For the present invention Figure 4 A magnified view of the structure at point A;

[0066] Figure 6 A three-dimensional diagram of the explosion structure of the gas-liquid separation device of the present invention;

[0067] Figure 7 A cross-sectional view of the explosion structure of the gas-liquid separation device of the present invention;

[0068] Figure 8 A cross-sectional view of a disassembled expansion assembly of a gas-liquid separation device of the present invention;

[0069] Fig. 9 It is a cross-sectional view of the split flow assembly of the gas-liquid separation device of the present invention;

[0070] Fig.10 is a cross-sectional view of an overflow member of the gas-liquid separation device of the present invention;

[0071] In the figure: 1, sleeve; 11, pipe section; 2, input pipe; 3, air inlet pipe; 31, duct; 32, guide shell; 33, guide plate; 34, exhaust pipe; 35, axial flow fan; 301, air outlet; 4, diverter assembly; 41, diverter body; 42, first connecting rod; 43, flow limiting ring; 44, heating element; 5, expansion assembly; 51, ring seat; 52, air storage ring; 53, charging pipe; 54, ring sheet; 501, through hole; 502, tapered hole; 503, ring groove; 6, overflow member; 61, first guide ring; 62, second guide ring; 63, second connecting rod. DETAILED DESCRIPTION

[0072] The following will be combined with 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.

[0073] like Figure 1 to Figure 10 As shown, the gas-liquid separation device of the present invention comprises a sleeve 1, an input pipe 2, an air intake pipe 3, a flow distribution component 4, an expansion component 5 and an overflow component 6.

[0074] like Figure 1~Figure 5 As shown, both ends of the sleeve 1 are connected; one end of the input pipe 2 and the air intake pipe 3 are connected to the outside, and one end of each is located in the sleeve 1 and is arranged opposite to each other; the flow splitter component 4 is arranged between the ends of the input pipe 2 and the air intake pipe 3;

[0075] As in the above structure, one end of the input pipe 2 connected to the outside is used for inputting the gas-liquid mixed medium, and then the gas-liquid medium will fall onto the diversion component 4, wherein the liquid flows downward and flows out through the lower port of the sleeve 1 and enters the liquid storage tank for collection, while the gas overflows upward and is processed by the gas recovery and processing device;

[0076] At the same time, the air inlet pipe 3 can be used to input gas, thereby driving the gas entering the sleeve 1 through the input pipe 2 to be quickly discharged, thereby improving the gas discharge effect;

[0077] Adaptively, in some cases, the air intake pipe 3 inputs air; in some cases, the air intake pipe 3 inputs inert gas to play a protective role.

[0078] The expansion assembly 5 is arranged between the flow dividing assembly 4 and the input pipe 2, and is used to adjust the opening between the flow dividing assembly 4 and the input pipe 2; a gas sensor is arranged in the casing 1, or a pressure sensor is arranged in the input pipe 2;

[0079] As in the above structure, the expansion assembly 5 is used to adjust the gap between the flow dividing assembly 4 and the input pipe 2, so as to achieve the effect of adjusting the opening; after the expansion assembly 5 completely closes the gap between the flow dividing assembly 4 and the input pipe 2, the gas and liquid will overflow into the casing 1 only when the pressure inside the input pipe 2 is too high, and at this time, the air inlet pipe 3 can input gas, thereby realizing intermittent action, reducing power consumption, and adapting to the pressure change working condition of the oil-gas mixed transmission pump;

[0080] When working, two detection sensors are provided and three forms of detection can be performed;

[0081] First, a gas sensor is arranged in the sleeve 1. When the pressure in the input pipe 2 is too high, the expansion component 5 will be compressed. At this time, the gas and liquid will overflow through the gap between the expansion component 5 and the input pipe 2, enter the sleeve 1 and be detected by the gas sensor. At this time, the air intake pipe 3 can work. Specifically, the gas sensor can be a hydrogen sulfide sensor, which can be adaptively selected according to the different gases contained in the transport medium.

[0082] Secondly, a pressure sensor is provided in the input pipe 2, so that when the pressure in the input pipe 2 is too high, the gas-liquid compression expansion component 5 can be allowed to achieve passive discharge, and the sealing effect of the expansion component 5 can be adjusted to increase the opening to achieve active discharge of gas and liquid. This is particularly suitable for situations where a large amount of gas and liquid enters the input pipe 2. At this time, the air intake pipe fitting 3 can perform coordinated actions; especially when the working pressure of the oil-gas mixed transmission pump changes, resulting in a change in the overflow medium flow rate, the air intake pipe fitting 3 and the expansion component 5 can coordinate actions to meet the working conditions.

[0083] Thirdly, a gas sensor is arranged in the casing 1 and a pressure sensor is arranged in the input pipe 2, and the two cooperate to perform detection work.

[0084] The gas-liquid separation device of this structure is not only simple in structure and occupies a small space, but also can be adaptively adjusted according to the working conditions of the oil-gas mixed transportation pump, and has good adaptability to the working conditions of the oil-gas mixed transportation pump.

[0085] like Figure 6 , Figure 7 and Fig. 9 As shown, the flow dividing assembly 4 includes a flow dividing body 41 and a first connecting rod 42, wherein the flow dividing body 41 is arranged between the input pipe 2 and the air inlet pipe 3, and the end of the flow dividing body 41 facing the input pipe 2 and the air inlet pipe 3 is in a conical structure; a plurality of first connecting rods 42 are provided, one end of the first connecting rod 42 is connected to the flow dividing body 41, and the other end is connected to the inner wall of the sleeve 1;

[0086] As shown in the above structure, the flow dividing assembly 4 includes a flow dividing body 41, and the flow dividing body 41 is configured as a structure with two conical ends, which is shaped like two cones butted together. In this way, after the gas-liquid mixed medium enters the sleeve 1 through the input pipe 2, the top of the flow dividing body 41 can be divided and diffused, which is conducive to guiding the liquid to flow downward, and at the same time, the liquid avoids the pipe opening of the air inlet pipe 3; the bottom end of the flow dividing body 41 can guide the airflow input by the air inlet pipe 3, so as to fully drain the gas overflowing from the input pipe 2 into the sleeve 1, thereby improving the discharge effect;

[0087] The first connecting rod 42 is used to connect the flow divider 41 with the sleeve 1, and the gap between the first connecting rods 42 and the first connecting rods 42 is used for the circulation of liquid.

[0088] like Fig. 9 As shown, the flow dividing assembly 4 further includes a flow limiting ring 43 and a heating element 44, wherein the flow limiting ring 43 is arranged at one end of the flow dividing body 41 facing the air inlet pipe 3, and the diameter of the flow limiting ring 43 is larger than the pipe diameter of the air inlet pipe 3; the end of the flow limiting ring 43 away from the flow dividing body 41 is folded inward to accommodate the heating element 44;

[0089] As in the above structure, the flow limiting ring 43 is used to guide the liquid flowing down the outer wall of the flow divider 41. The diameter of the flow limiting ring 43 is larger than the diameter of the air intake pipe 3, so as to prevent the liquid from entering the air intake pipe 3.

[0090] At the same time, the end of the flow limiting ring 43 is arranged to be folded inwards, which is conducive to the natural dripping of the liquid and convenient for installing the heating element 44;

[0091] The heating element 44 can heat the gas inputted from the flow divider 41 and the air inlet pipe 3, so as to increase the temperature of the liquid falling on the flow divider 41, thereby promoting the gas precipitation and improving the gas-liquid separation effect; at the same time, the gas temperature is increased to accelerate the rising and discharge of the gas;

[0092] In some embodiments, if the air inlet pipe 3 fails to supply air, the heating element 44 is used to heat the inside of the sleeve 1, so that when the hot air flow rises, a negative pressure is naturally formed at the inlet of the air inlet pipe 3, thereby ensuring the discharge of gas;

[0093] In this case, the heating temperature needs to be precisely controlled to avoid explosion of dangerous gases. To improve safety, inert gas can be introduced through the air intake pipe 3 as a flow channel to increase the explosion threshold.

[0094] like Figure 7 and Figure 8 As shown, the expansion assembly 5 includes a ring seat 51, an air storage ring 52 and an air filling tube 53, wherein the ring seat 51 abuts against one end of the flow divider 41 toward the input tube 2; the air storage ring 52 is arranged on the ring seat 51, and the air storage ring 52 abuts against the pipe opening of the input tube 2;

[0095] As in the above structure, the ring seat 51 is used for the installation of the expansion assembly 5. During assembly, the ring seat 51 fits the manifold 41 and relies on the manifold 41 for support. The gas storage ring 52 is arranged on the manifold 41 and is made of rubber material. The size of the gap between the inlet pipe 2 and the manifold 41 is regulated by the inflation expansion method.

[0096] In this way, when the pressure inside the input pipe 2 increases, the gas storage ring 52 will be pressurized and compressed, and then the gas-liquid mixed medium will overflow into the casing 1 for separation;

[0097] Furthermore, the ring seat 51 is provided with a through hole 501 communicating with the gas storage ring 52, one end of the gas charging tube 53 is connected to the ring seat 51 and communicates with the through hole 501, and the other end thereof passes through the sleeve 1;

[0098] As in the above structure, the inflation tube 53 is used for inflating and deflating the air storage ring 52 , and one end thereof passes through the sleeve 1 for convenient connection to the air pump, so that the air pump can inflate and deflate air through the inflation tube 53 , and the air flow circulates through the through hole 501 .

[0099] Specifically, when the expansion assembly 5 is prepared, the gas storage ring 52 is prepared as a sealed body with gas filled inside, and is fixed to the ring seat 51 by pasting, and then a through hole 501 is drilled on the ring seat 51, and the gas storage ring 52 is drilled synchronously to connect the gas storage ring 52, which can ensure good sealing after the gas filling pipe 53 is assembled;

[0100] Specifically, the inflation tube 53 penetrates through the sleeve 1 and extends to one end of the outside, is connected in series with a pressure gauge and a switch valve, and then is connected to an air pump, so as to facilitate the control of the air storage volume of the air storage ring 52.

[0101] like Figure 8 As shown, the expansion assembly 5 also includes a ring piece 54, and the ring seat 51 is annular and has a tapered hole 502 and an annular groove 503, wherein the inner wall of the tapered hole 502 abuts against the distributor 41, and the end of the distributor 41 extends into the interior of the input pipe 2; the annular groove 503 accommodates the gas storage ring 52; the ring piece 54 is connected to the gas storage ring 52 and abuts against the distributor 41;

[0102] As in the above structure, the ring seat 51 is set as a circular ring structure, and is provided with a tapered hole 502 to facilitate the tapered surface of the flow divider 41. The annular groove 503 is used to accommodate the gas storage ring 52, ensuring the fitting area between the gas storage ring 52 and the ring seat 51, so that the combined structure is stable;

[0103] Furthermore, a ring sheet 54 is provided on the gas storage ring 52 to abut against the conical surface of the flow divider 41, thereby improving the sealing performance;

[0104] A sealing gasket is disposed on the surface of the tapered hole 502, so that when the flow divider 41 abuts against the ring seat 51, the ring sheet 54 can be used to improve the sealing effect;

[0105] The end of the flow divider 41 extends into the interior of the input pipe 2, so that the gas and liquid can be better guided, which can also reduce the length of the separation device and make it miniaturized to improve the convenience of application.

[0106] like Figure 6 , Figure 7 and Fig.10 As shown, the overflow member 6 includes a first guide ring 61, a second guide ring 62 and a second connecting rod 63, wherein the first guide ring 61 is a funnel-shaped structure, the large diameter end of the first guide ring 61 is connected to the inner wall of the sleeve 1, and the small diameter end is gap-matched with the intake pipe member 3; the second guide ring 62 is a funnel-shaped structure, the small diameter end of the second guide ring 62 is connected to the outer wall of the intake pipe member 3, and the large diameter end is connected to the inner wall of the sleeve 1 through the second connecting rod 63; the small diameter end of the first guide ring 61 extends into the interior of the second guide ring 62;

[0107] As in the above structure, the first guide ring 61 is configured in a funnel shape, so as to facilitate the downward flow of liquid;

[0108] When the liquid flows downward under the guidance of the flow divider 41, it first falls on the first guide ring 61 and gathers toward the center, and then flows to the second guide ring 62. As the liquid increases, the liquid level in the second guide ring 62 increases, and the liquid overflows through the gap between the second connecting rods 63, and then is discharged through the lower port of the sleeve 1.

[0109] The second guide ring 62 is configured as a funnel-shaped structure, and the small-diameter end of the first guide ring 61 extends into the interior of the second guide ring 62. When liquid accumulates in the second guide ring 62, the small-diameter end of the first guide ring 61 can be submerged, thereby achieving a self-sealing effect and significantly reducing the discharge of volatile gas from the liquid.

[0110] When the machine is shut down, the air inlet pipe 3 can quickly drain the internal gas of the gas-liquid separation device, which is beneficial to ensure the safety of maintenance personnel;

[0111] This structure is also beneficial to reducing the cross-section of the downward flow of gas and liquid, so as to avoid the gas being discharged through the lower liquid outlet end of the sleeve 1.

[0112] like Figure 5 and Figure 6 As shown, the air inlet pipe 3 includes a conduit 31, a guide shell 32, a guide plate 33, an exhaust pipe 34 and an axial flow fan 35, wherein one end of the conduit 31 is connected to the outside, and the other end corresponds to the flow splitter component 4; the guide shell 32 is sleeved at the port of the conduit 31, and the guide shell 32 is provided with an air outlet 301 toward the overflow member 6; the guide plate 33 is connected to the guide shell 32 and corresponds to the air outlet 301;

[0113] As in the above structure, the conduit 31 is used for inputting airflow, and the guide shell 32 is used for guiding the airflow. When the conduit 31 inputs airflow, the airflow will be discharged downward through the air outlet 301 of the guide shell 32, thereby preventing liquid from falling into the conduit 31;

[0114] At the same time, since the first guide ring 61 and the second guide ring 62 realize liquid sealing at the bottom of the sleeve 1, the gas will flow upward to drive the gas input from the input pipe 2 upward into the gas-liquid recovery and processing device;

[0115] Furthermore, the guide shell 32 is connected with a guide plate 33, which can guide the airflow to avoid impacting the liquid accumulated in the second guide ring 62, causing the gas to be input downward, thereby ensuring a good gas-liquid separation effect;

[0116] The exhaust pipe 34 is arranged on the side of the second guide ring 62 away from the first guide ring 61, and the exhaust pipe 34 is connected with the conduit 31 and the sleeve 1; the axial flow fan 35 is arranged in the conduit 31;

[0117] As in the above structure, in order to ensure a compact size, an axial flow fan 35 is provided for inputting airflow, and the axial flow fan 35 is located in the duct 31, which can avoid space occupation and has a good suction effect;

[0118] The exhaust pipe 34 is connected to the conduit 31 and the sleeve 1 at the same time. When in use, the lower port of the sleeve 1 is connected to the liquid storage tank, and the liquid storage tank is provided with an air inlet. Thus, when the axial flow fan 35 is working, one end of the conduit 31 connected to the outside world will take in air, and the other end of the conduit 31 will take in air through the air inlet of the liquid storage tank. This airflow flows through the liquid storage tank and the space of the sleeve 1 below the overflow member 6 to achieve the suction and exhaust of volatile gases, thereby improving the recovery and treatment effect of toxic gases.

[0119] At this time, the suction force should be well controlled to prevent the liquid in the second guide ring 62 from flowing out due to wind pressure;

[0120] Specifically, one end of the conduit 31 communicating with the outside and the free end of the exhaust pipe 34 are both provided with switch valves to facilitate the control of the suction and exhaust conditions.

[0121] like Figure 6 and Figure 7 As shown, the sleeve 1 includes multiple pipe sections 11, which are detachably connected and interpenetrating, wherein the input pipe 2 and the expansion assembly 5 are connected to the same pipe section 11; the flow splitter assembly 4 is connected to a pipe section 11; the overflow member 6 is connected to a pipe section 11; and the air intake pipe member 3 is connected to a pipe section 11;

[0122] As shown in the above structure, the casing 1 is composed of multiple pipe sections 11, and the input pipe 2, the expansion assembly 5, the diversion assembly 4 and the overflow member 6 are connected to the single pipe section 11 according to the application layout, which forms a modular structure, is conducive to the disassembly, maintenance and replacement of each part, and improves the convenience of maintenance.

[0123] The oil-gas mixed delivery pump of the present invention comprises the above-mentioned gas-liquid separation device, and the sealing component of the oil-gas mixed delivery pump is connected to the input pipe 2;

[0124] In specific applications, the connection between the plunger and the sealing packing of the oil-gas mixed pump is sealed by the shell and connected to the input pipe 2 through a pipeline. In this way, when the pressure is too high and the medium leaks, the gas and liquid can enter the input pipe 2, and the separation operation can be performed subsequently.

[0125] The application method of the gas-liquid separation device of the present invention comprises the following steps:

[0126] S1. A gas sensor is installed in the casing 1, or a pressure sensor is installed in the input pipe 2.

[0127] S2, connect the sealing component of the oil-gas mixed pump to the input pipe 2 through the pipeline,

[0128] S3, place the gas-liquid separation device vertically, with the input pipe 2 located on the upper side, connect the top pipe opening of the casing 1 to the gas recovery and processing device, and connect the bottom pipe opening of the casing 1 to the liquid storage tank,

[0129] S4, inflate the gas storage ring 52 through the gas filling pipe 53 to expand the gas storage ring 52 and seal the gap between the input pipe 2 and the flow dividing assembly 4,

[0130] S5. As the oil-gas mixed pump works, the oil-gas medium conveyed under high pressure overflows through the sealing component and enters the input pipe 2.

[0131] S6. As the pressure in the input pipe 2 increases, the gas storage ring 52 is compressed, and the overflowed oil and gas medium enters the casing 1, wherein the liquid phase medium flows downward through the diverter assembly 4 and enters the liquid storage tank, and the gas phase medium flows upward and enters the gas recovery and processing device;

[0132] When the gas sensor in the casing 1 detects toxic gas, or the pressure sensor in the input pipe 2 detects abnormal pressure changes, it means that the sealing effect of the sealing component of the oil-gas mixed transmission pump is poor or the sealing fails, and the air intake pipe 3 is activated to input gas, improve gas flowability, and promote the discharge of overflowed gas;

[0133] When the sealing component of the oil-gas mixed transmission pump fails, the internal gas of the gas storage ring 52 is emptied through the inflation pipe 53, and the opening between the flow dividing component 4 and the input pipe 2 is kept at the maximum to speed up the processing of the overflowed gas and liquid.

[0134] 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 principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-liquid separation device, characterized in that: It comprises a sleeve (1), an inlet pipe (2), an air intake pipe (3), a flow splitter assembly (4) and a tightening assembly (5), wherein: The two ends of the sleeve (1) are connected; The input pipe (2) and the air intake pipe (3) each have one end connected to the outside, and each have one end located inside the sleeve (1) and are arranged opposite to each other; The flow splitter assembly (4) is arranged between the input pipe (2) and the end of the air intake pipe (3); The expansion assembly (5) is arranged between the flow dividing assembly (4) and the input pipe (2) and is used to adjust the opening between the flow dividing assembly (4) and the input pipe (2); A gas sensor is arranged in the sleeve (1), or a pressure sensor is arranged in the input pipe (2).

2. The gas-liquid separation device according to claim 1, characterized in that: The flow splitter assembly (4) comprises a flow splitter (41) and a first connecting rod (42), wherein: The flow divider (41) is arranged between the input pipe (2) and the air intake pipe member (3), and the end of the flow divider (41) facing the input pipe (2) and the air intake pipe member (3) is in a conical structure; A plurality of first connecting rods (42) are provided, one end of each of the first connecting rods (42) being connected to the flow divider (41), and the other end of each of the first connecting rods (42) being connected to the inner wall of the sleeve (1).

3. The gas-liquid separation device according to claim 2, characterized in that: The flow dividing assembly (4) further comprises a flow limiting ring (43) and a heating element (44), wherein: The flow limiting ring (43) is arranged at one end of the flow dividing body (41) facing the air intake pipe (3), and the diameter of the flow limiting ring (43) is larger than the diameter of the air intake pipe (3); One end of the flow limiting ring (43) away from the flow divider (41) is folded inwards to accommodate the heating element (44).

4. The gas-liquid separation device according to claim 2 or 3, characterized in that: The expansion assembly (5) comprises a ring seat (51), an air storage ring (52) and an air filling tube (53), wherein: The ring seat (51) abuts against one end of the flow divider (41) that faces the input pipe (2); The gas storage ring (52) is arranged on the ring seat (51), and the gas storage ring (52) abuts against the pipe opening of the input pipe (2); The ring seat (51) is provided with a through hole (501) connected to the gas storage ring (52); one end of the gas charging tube (53) is connected to the ring seat (51) and interpenetrates with the through hole (501); the other end of the gas charging tube (53) passes through the sleeve (1).

5. The gas-liquid separation device according to claim 4, characterized in that: The expansion assembly (5) further comprises a ring sheet (54), the ring seat (51) is in the form of a circular ring and is provided with a tapered hole (502) and a ring groove (503), wherein: The inner wall of the tapered hole (502) abuts against the flow divider (41), and the end of the flow divider (41) extends into the interior of the input pipe (2); The annular groove (503) accommodates the gas storage ring (52); The ring sheet (54) is connected to the gas storage ring (52) and abuts against the flow divider (41).

6. The gas-liquid separation device according to any one of claims 1, 2, 3 and 5, characterized in that: It also includes an overflow member (6), the overflow member (6) including a first guide ring (61), a second guide ring (62) and a second connecting rod (63), wherein: The first guide ring (61) is a funnel-shaped structure, the large-diameter end of the first guide ring (61) is connected to the inner wall of the sleeve (1), and the small-diameter end is clearance-matched with the air intake pipe (3); The second guide ring (62) is a funnel-shaped structure, the small-diameter end of the second guide ring (62) is connected to the outer wall of the air intake pipe (3), and the large-diameter end is connected to the inner wall of the sleeve (1) via the second connecting rod (63); The small diameter end of the first guide ring (61) extends into the interior of the second guide ring (62).

7. The gas-liquid separation device according to claim 6, characterized in that: The air intake pipe (3) comprises a conduit (31), a guide shell (32), a guide plate (33), an exhaust pipe (34) and an axial flow fan (35), wherein: One end of the conduit (31) is in communication with the outside, and the other end corresponds to the flow diversion component (4); The flow guide shell (32) is sleeved on the port of the conduit (31), and the flow guide shell (32) is provided with an air outlet (301) facing the overflow member (6); The guide plate (33) is connected to the guide shell (32) and corresponds to the air outlet (301); The drain pipe (34) is arranged on a side of the second guide ring (62) away from the first guide ring (61), and the drain pipe (34) is connected to the guide tube (31) and the sleeve (1); The axial flow fan (35) is arranged in the duct (31).

8. The gas-liquid separation device according to claim 6, characterized in that: The casing (1) comprises a plurality of pipe sections (11), wherein the plurality of pipe sections (11) are detachably connected and interpenetrate each other, wherein: The input pipe (2) and the expansion assembly (5) are connected to the same pipe section (11); The flow splitting component (4) is connected to one of the pipe sections (11); The overflow member (6) is connected to one of the pipe sections (11); The air intake pipe (3) is connected to one of the pipe sections (11).

9. An oil-gas mixed transport pump, characterized in that: It comprises the gas-liquid separation device as claimed in any one of claims 1 to 8, wherein the sealing component of the oil-gas mixed transmission pump is connected to the input pipe (2).

10. An application method of the gas-liquid separation device according to claim 4 or 5, characterized in that: The following steps are involved: S1. A gas sensor is arranged in the casing (1), or a pressure sensor is arranged in the input pipe (2). S2, connecting the sealing component of the oil-gas mixed pump to the input pipe (2) through a pipeline, S3, placing the gas-liquid separation device vertically, with the input pipe (2) located at the upper side, connecting the top pipe opening of the casing (1) to the gas recovery and processing device, and connecting the bottom pipe opening of the casing (1) to the liquid storage tank, S4, inflating the gas storage ring (52) through the gas filling pipe (53) so as to expand the gas storage ring (52) and seal the gap between the input pipe (2) and the flow dividing assembly (4); S5. As the oil-gas mixed pump works, the oil-gas medium conveyed under high pressure overflows through the sealing component and enters the input pipe (2). S6. As the pressure in the input pipe (2) increases, the gas storage ring (52) is compressed, and the overflowed oil and gas medium enters the casing (1), wherein the liquid phase medium flows downward through the diverter assembly (4) and enters the liquid storage tank, and the gas phase medium flows upward and enters the gas recovery and processing device; When the gas sensor in the casing (1) detects toxic gas, or when the pressure sensor in the input pipe (2) detects an abnormal pressure change, it indicates that the sealing effect of the sealing component of the oil-gas mixed transmission pump is poor or the sealing fails, and the air intake pipe (3) is activated to input gas, improve gas flowability, and promote the discharge of overflowed gas; When the sealing component of the oil-gas mixed transmission pump fails, the internal gas of the gas storage ring (52) is evacuated through the gas filling pipe (53), and the opening between the flow distribution component (4) and the input pipe (2) is kept at the maximum, so as to speed up the processing of the overflowed gas and liquid.

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