A gas-liquid separation device, an oil-gas mixed transportation pump, and a method for applying the gas-liquid separation device

Abstract

The present invention relates to the technical field of oil extraction, and provides a gas-liquid separation device, an oil-gas mixed transportation pump and an application method of the gas-liquid separation device, including a casing, an input pipe, an air inlet pipe component, a shunt component and a tensioning component. Among them, both ends of the casing are through; one end of both the input pipe and the air inlet pipe component is communicated with the outside, and one end of both is located inside the casing and is arranged oppositely; the shunt component is arranged between the ends of the input pipe and the air inlet pipe component; the tensioning component is arranged between the shunt component and the input pipe for adjusting the opening degree between the shunt component and the input pipe; a gas sensor is arranged inside the casing, or a pressure sensor is arranged inside the input pipe. By arranging the casing to install the input pipe and the air inlet pipe component and providing a shunt component, the gas-liquid can be input into the casing and shunted under the guidance of the shunt component to complete gas-liquid separation. It has the advantages of simple structure, small volume and convenient application.

Description

Technical Field

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

[0002] An oil-gas mixed transportation pump is a pump specifically used for transporting crude oil output. According to different structures, the current mixed transportation pumps are mainly divided into single-screw pumps, double-screw pumps, and reciprocating oil-gas mixed transportation pumps, which can handle crude oil containing substances such as gas, water, and sand.

[0003] During the application process, since the pump body is in a high-pressure state, the transported medium is extremely likely to overflow; especially for the reciprocating oil-gas mixed transportation pump, when it operates, the transported medium is easily spilled between the plunger and the sealing packing, mainly including gas-phase medium and liquid-phase medium; among them, the gas-phase medium contains a large amount of hydrogen sulfide, which is a highly toxic gas, and the liquid-phase medium is a mixture of water, oil, etc. transported, as well as lubricating oil for lubrication. Therefore, in order to avoid personal injury and environmental pollution, it is necessary to clean the spilled substances in a timely manner.

[0004] The existing invention patent application with the publication number CN111437631A discloses a gas-liquid separation device and its separation method, which relates to the field of oil and gas exploitation. The gas-liquid separation device includes: a tank body, a liquid discharge port is arranged at the lower end of the tank body, and a gas outlet port is arranged at the upper end of the tank body; a liquid inlet pipe extending into the tank body; an infrared emitter arranged on the liquid inlet pipe, and the infrared emitter is used to heat the gas in the gas-liquid mixture flowing through the liquid inlet pipe; a centrifugal mechanism, which includes: 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, and 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 mixture ejected from the centrifugal impeller; a pulse vibrator arranged on the liquid guide plate.

[0005] In the above technical solution, a gas-liquid separation device is mentioned, which uses a centrifugal method to discharge gas. This is a common gas-liquid separation method, and usually requires a relatively large tank to set up a centrifugal mechanism and corresponding auxiliary components, so it has a large volume and is suitable for the separation of a large amount of working media; however, the flow rate of the medium spilled from the sealing components of the oil-gas mixed transportation pump is usually small and changes with the working pressure. The existing gas-liquid separation devices are not applicable, so a more concise and convenient gas-liquid separation device is needed. Summary of the Invention

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

[0007] The technical solution of the present invention is realized as follows:

[0008] On the one hand, the present invention provides a gas-liquid separation device, including a casing, an input pipe, an air inlet pipe fitting, a flow splitting assembly and a tightening assembly. Among them,

[0009] Both ends of the casing are through;

[0010] One end of both the input pipe and the air inlet pipe fitting is communicated with the outside, and one end of both is located inside the casing and is arranged oppositely;

[0011] The flow splitting assembly is arranged between the ends of the input pipe and the air inlet pipe fitting;

[0012] The tightening assembly is arranged between the flow splitting assembly and the input pipe and is used to adjust the opening degree between the flow splitting assembly and the input pipe;

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

[0014] On the basis of the above technical solution, preferably, the flow splitting assembly includes a flow splitter and a first connecting rod. Among them,

[0015] The flow splitter is arranged between the input pipe and the air inlet pipe fitting, and the flow splitter is in a conical structure towards the ends of the input pipe and the air inlet pipe fitting;

[0016] There are multiple first connecting rods. One end of the first connecting rod is connected to the flow splitter, and the other end is connected to the inner wall of the casing.

[0017] On the basis of the above technical solution, preferably, the flow splitting assembly further includes a flow limiting ring and a heating element. Among them,

[0018] The flow limiting ring is arranged at one end of the flow splitter towards the air inlet pipe fitting, and the diameter of the flow limiting ring is larger than the pipe diameter of the air inlet pipe fitting;

[0019] One end of the flow limiting ring away from the flow splitter is turned inwards to accommodate the heating element.

[0020] On the basis of the above technical solution, preferably, the tightening assembly includes a ring seat, a gas storage ring and a charging pipe. Among them,

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

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

[0023] The ring seat is provided with a through hole communicating with the air storage ring. One end of the charging pipe is connected to the ring seat and is in communication with the through hole, and the other end penetrates through the sleeve.

[0024] On the basis of the above technical solution, preferably, the expansion assembly further includes a ring plate. The ring seat is of an annular structure and is provided with a tapered hole and a ring groove. Among them,

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

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

[0027] The ring plate is connected to the air storage ring and abuts against the fluid distributor.

[0028] On the basis of the above technical solution, preferably, it further includes an overflow member. The overflow member includes a first guide ring, a second guide ring and a second connecting rod. Among them,

[0029] The first guide ring is of 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 fit with the air inlet pipe member;

[0030] The second guide ring is of a funnel-shaped structure. The small-diameter end of the second guide ring is connected to the outer wall of the air inlet pipe member, and the large-diameter end is connected to the inner wall of the sleeve through the 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 inlet pipe member includes a conduit, a flow guide shell, a flow guide plate, an exhaust pipe and an axial flow fan. Among them,

[0033] One end of the conduit communicates with the outside, and the other end corresponds to the flow splitting assembly;

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

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

[0036] The exhaust pipe is arranged on the side of the second guide ring away from the first guide ring, and the exhaust pipe is communicated with the conduit and the sleeve;

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

[0038] On the basis of the above technical solution, preferably, the sleeve includes multiple pipe segments. The multiple pipe segments are detachably connected and communicate with each other. Among them,

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

[0040] The flow splitting assembly is connected to one pipe segment;

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

[0042] The intake pipe part is connected to a pipe section.

[0043] On the other hand, the present invention provides an oil-gas mixed transportation pump, including the above-mentioned gas-liquid separation device, and the sealing component of the oil-gas mixed transportation pump is communicated with the input pipe.

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

[0045] S1. A gas sensor is arranged in the casing, or a pressure sensor is arranged in the input pipe.

[0046] S2. The sealing component of the oil-gas mixed transportation pump is communicated with the input pipe through a pipeline.

[0047] S3. The gas-liquid separation device is placed vertically, with the input pipe on the upper side. The top pipe orifice of the casing is communicated with the gas recovery and treatment device, and the bottom pipe orifice of the casing is communicated with the liquid storage tank.

[0048] S4. Inflate the gas storage ring through an inflation pipe to make the gas storage ring expand and seal the gap between the input pipe and the shunt component.

[0049] S5. As the oil-gas mixed transportation pump operates, when the transported oil-gas medium overflows under high pressure through the sealing component, it enters the input pipe.

[0050] S6. As the pressure in the input pipe increases, the gas storage ring compresses, and the overflowed oil-gas medium enters the casing. Among them, the liquid-phase medium flows downward through the shunt component and enters the liquid storage tank, and the gas-phase medium flows upward and enters the gas recovery and treatment device.

[0051] Wherein, when the gas sensor in the casing detects toxic gas, or the pressure sensor arranged in the input pipe detects abnormal pressure change, it indicates that the sealing effect of the sealing component of the oil-gas mixed transportation pump is poor or the seal fails, and the intake pipe part acts to input gas to improve gas fluidity and promote the discharge of the overflowed gas.

[0052] Wherein, when the sealing component of the oil-gas mixed transportation pump fails, the internal gas of the gas storage ring is emptied through the inflation pipe to keep the maximum opening degree between the shunt component and the input pipe, so as to accelerate the treatment of the overflowed gas-liquid.

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

[0054] (1) By setting up a sleeve to install the input pipe and the air inlet pipe component, and a shunt component is provided. In this way, gas-liquid can be input into the sleeve and shunted under the guidance of the shunt component to complete gas-liquid separation. It has the advantages of simple structure, small volume, good shunt effect and convenient application.

[0055] (2) A tightening component is also arranged between the input pipe and the shunt component. It can adjust the gap opening to adapt to the treatment of gas-liquid with different flow rates. At the same time, the tightening component can cooperate with the gas sensor and the pressure sensor to detect gas-liquid overflow, so as to coordinate the action of the air inlet pipe component. This 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 overflow liquid of oil-gas mixed transportation pumps.

[0056] (3) The shunt component shunts the liquid through the shunt body, which is conducive to promoting the precipitation of gas in cooperation with the heating component. And when the air inlet pipe component fails, it can rely only on the heating component for heating. In this way, when the hot air flow rises, a negative pressure is naturally formed at the inlet of the air inlet pipe component, thus ensuring the discharge of gas. At the same time, the shunt component is provided with a current-limiting ring, which can protect the heating component from contacting the liquid to ensure application safety.

[0057] (4) In the tightening component, the air storage ring is inflated and deflated by the air charging pipe. In this way, the opening between the shunt component and the input pipe can be adjusted to achieve adaptive adjustment. And the air storage ring is elastic. When the pressure in the input pipe is too high, on the one hand, it can enable the pressure sensor to complete the detection, and on the other hand, it can be compressed to make the gas-liquid overflow. At this time, it can be detected by the gas detection device, and the application effect is excellent.

[0058] (5) The overflow part is provided with a funnel-shaped first guide ring and a second guide ring, which reduces the cross-section of the downward flow of gas-liquid and is conducive to avoiding the output of gas through the liquid outlet end. At the same time, the small-diameter end of the first guide ring extends into the inside of the second guide ring. When the liquid accumulates in the second guide ring, it can immerse the small-diameter end of the first guide ring, so as to achieve a self-sealing effect.

[0059] (6) The sleeve is composed of multiple pipe sections, and the input pipe, the tightening component, the shunt component and the overflow part are connected to a single pipe section according to the application layout, which forms a modular structure, is conducive to the disassembly, repair and replacement of each part, and improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0061] Figure 1 Isometric view of the gas-liquid separation device of the present invention;

[0062] Figure 2 Front view of the gas-liquid separation device of the present invention;

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

[0064] Figure 4 Of the present invention Figure 3 Sectional view taken along line A-A in;

[0065] Figure 5 Of the present invention Figure 4 Enlarged view of the structure at point A in;

[0066] Figure 6 Isometric view of the exploded structure of the gas-liquid separation device of the present invention;

[0067] Figure 7 Sectional view of the exploded structure of the gas-liquid separation device of the present invention;

[0068] Figure 8 Sectional view of the split expansion component of the gas-liquid separation device of the present invention;

[0069] Figure 9 Sectional view of the split flow diversion component of the gas-liquid separation device of the present invention;

[0070] Figure 10 Sectional view of the overflow part of the gas-liquid separation device of the present invention;

[0071] In the figure: 1, sleeve; 11, pipe section; 2, input pipe; 3, intake pipe component; 31, conduit; 32, diversion shell; 33, diversion plate; 34, drain pipe; 35, axial flow fan; 301, air outlet; 4, flow diversion component; 41, flow splitter; 42, first connecting rod; 43, current limiting ring; 44, heating element; 5, expansion component; 51, ring seat; 52, gas storage ring; 53, charging pipe; 54, ring plate; 501, through hole; 502, tapered hole; 503, ring groove; 6, overflow part; 61, first diversion ring; 62, second diversion ring; 63, second connecting rod. Detailed implementation manners

[0072] Next, in combination with the implementation manners of the present invention, the technical solutions in the implementation manners of the present invention will be clearly and completely described. Obviously, the described implementation manners are only a part of the implementation manners of the present invention, rather than all of the implementation manners. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0073] AsFigures 1 to 10 As shown, the gas-liquid separation device of the present invention includes a casing 1, an input pipe 2, an air inlet pipe component 3, a shunt component 4, a tightening component 5, and an overflow component 6.

[0074] As Figures 1 to 5 shown, both ends of the casing 1 are through; one end of each of the input pipe 2 and the air inlet pipe component 3 is communicated with the outside, and one end of each is located inside the casing 1 and is arranged oppositely; the shunt component 4 is arranged between the ends of the input pipe 2 and the air inlet pipe component 3;

[0075] In the above structure, the end of the input pipe 2 communicated with the outside is used for inputting the gas-liquid mixed medium. Subsequently, the gas-liquid medium will fall onto the shunt component 4. Among them, the liquid flows downward and flows out through the lower port of the casing 1 and enters the liquid storage tank for collection, while the gas overflows upward and is processed by the gas recovery processing device;

[0076] At the same time, the air inlet pipe component 3 can input gas, so as to drive the gas in the input pipe 2 entering the casing 1 to be discharged quickly, improving the gas discharge effect;

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

[0078] Among them, the tightening component 5 is arranged between the shunt component 4 and the input pipe 2 and is used for adjusting the opening degree between the shunt component 4 and the input pipe 2; a gas sensor is arranged inside the casing 1, or a pressure sensor is arranged inside the input pipe 2;

[0079] In the above structure, the tightening component 5 is used to adjust the gap size between the shunt component 4 and the input pipe 2, achieving the effect of opening degree adjustment; after the tightening component 5 completely closes the gap between the shunt component 4 and the input pipe 2, only when the internal pressure of the input pipe 2 is too high, the gas-liquid will overflow into the casing 1. At this time, the air inlet pipe component 3 can input gas, thereby realizing intermittent operation to reduce power consumption and adapt to the pressure change working conditions of the oil-gas mixed transportation pump;

[0080] During operation, two detection sensors are provided and three forms of detection can be carried out;

[0081] First, a gas sensor is arranged inside the casing 1. In this way, when the pressure in the input pipe 2 is too high, it will compress the tightening component 5. At this time, the gas-liquid will overflow through the gap between the tightening component 5 and the input pipe 2 and enter the casing 1 to be detected by the gas sensor. At this time, the air inlet pipe component 3 can work; specifically, the gas sensor can adopt a hydrogen sulfide sensor and can be adaptively selected according to the gas contained in the transported medium;

[0082] Second, a pressure sensor is provided in the input pipe 2. In this way, when the pressure in the input pipe 2 is too high, the gas-liquid compression and expansion component 5 can be made to achieve passive discharge, and the sealing effect of the expansion component 5 can also be adjusted to increase the opening degree to achieve active discharge of gas and liquid. This is especially applicable when there is a large amount of gas and liquid entering the input pipe 2. At this time, the intake pipe component 3 can perform coordinated actions; especially when the working pressure of the oil-gas mixed transportation pump changes, resulting in a change in the overflow medium flow rate, the intake pipe component 3 and the expansion component 5 can perform coordinated actions to conform to the working conditions.

[0083] Third, a gas sensor is provided in the casing 1 and a pressure sensor is provided in the input pipe 2 at the same time, and the two coordinate to perform detection work.

[0084] The gas-liquid separation device with this structure not only has a simple structure and small occupied 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] Such as Figure 6 、 Figure 7 and Figure 9 As shown, the flow splitting component 4 includes a flow splitter 41 and a first connecting rod 42. Among them, the flow splitter 41 is arranged between the input pipe 2 and the intake pipe component 3, and the ends of the flow splitter 41 facing the input pipe 2 and the intake pipe component 3 are 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 splitter 41, and the other end is connected to the inner wall of the casing 1;

[0086] In the above structure, the flow splitting component 4 includes a flow splitter 41, and the flow splitter 41 is configured to have a structure with both ends being conical, similar to the docking of two cones. In this way, after the gas-liquid mixed medium enters the casing 1 through the input pipe 2, the top of the flow splitter 41 can perform flow splitting and diffusion, which is beneficial to guiding the liquid to flow downward, and at the same time enables the liquid to avoid the nozzle of the intake pipe component 3; at the bottom end of the flow splitter 41, the airflow input by the intake pipe component 3 can be guided, so as to fully drain the gas overflowing from the input pipe 2 into the casing 1 and improve the discharge effect;

[0087] Among them, the first connecting rod 42 is used to connect the flow splitter 41 with the casing 1, and the gap between the first connecting rods 42 is used for the flow of liquid.

[0088] Such as Figure 9 As shown, the flow splitting component 4 further includes a flow limiting ring 43 and a heating element 44. Among them, the flow limiting ring 43 is arranged at one end of the flow splitter 41 facing the intake pipe component 3, and the diameter of the flow limiting ring 43 is larger than the pipe diameter of the intake pipe component 3; one end of the flow limiting ring 43 away from the flow splitter 41 is folded inward to accommodate the heating element 44;

[0089] In the above structure, the flow-limiting ring 43 is used to guide the liquid flowing down the outer wall of the fluid splitter 41. The diameter of the flow-limiting ring 43 is larger than the pipe diameter of the intake pipe fitting 3, thereby preventing the liquid from entering the intake pipe fitting 3;

[0090] Meanwhile, the end of the flow-limiting ring 43 is set to be folded inward, which is conducive to the natural dripping of the liquid and facilitates the installation of the heating element 44;

[0091] Among them, the heating element 44 can heat the gas input by the fluid splitter 41 and the intake pipe fitting 3, so as to increase the temperature of the liquid falling on the fluid splitter 41, thereby promoting gas precipitation and improving the gas-liquid separation effect; at the same time, it increases the gas temperature and speeds up the upward discharge of the gas;

[0092] In some embodiments, if the intake pipe fitting 3 fails to supply air, the heating element 44 is relied on to heat the inside of the sleeve 1. In this way, when the hot air flow rises, a negative pressure is naturally formed at the entrance of the intake pipe fitting 3, thereby ensuring the discharge of the gas;

[0093] In such a situation, it is necessary to precisely control the heating temperature to avoid the deflagration problem of dangerous gases; to improve safety, inert gas can be sent through the intake pipe fitting 3 as a flow channel to increase the deflagration threshold.

[0094] As Figure 7 and Figure 8 shown, the expansion assembly 5 includes a ring seat 51, a gas storage ring 52 and a charging pipe 53. Among them, the ring seat 51 abuts against one end of the fluid splitter 41 facing 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 orifice of the input pipe 2;

[0095] In the above structure, the ring seat 51 is used for the installation and use of the expansion assembly 5. During assembly, the ring seat 51 fits the fluid splitter 41 and relies on the fluid splitter 41 for support. The gas storage ring 52 is arranged on the fluid splitter 41 and is made of rubber material. By relying on the inflation and expansion method, the size of the gap between the pipe orifice of the input pipe 2 and the fluid splitter 41 is regulated;

[0096] In this way, when the internal pressure of the input pipe 2 increases, the gas storage ring 52 will be pressurized and then compressed. After that, the gas-liquid mixed medium overflows into the sleeve 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 charging pipe 53 is connected to the ring seat 51 and is in communication with the through hole 501, and the other end penetrates through the sleeve 1;

[0098] In the above structure, the charging pipe 53 is used for the inflation and deflation of the gas storage ring 52. One end of it penetrates through the sleeve 1, which is convenient for connecting an air pump. In this way, the air pump can perform inflation and deflation through the charging pipe 53, and the air flow circulates through the through hole 501.

[0099] Specifically, when preparing the expansion assembly 5, the air storage ring 52 is prepared into a sealed body filled with air inside, and is adhesively fixed to the ring seat 51. Subsequently, a through hole 501 is drilled in the ring seat 51, and the air storage ring 52 is synchronously drilled through to communicate with the air storage ring 52. After the air charging pipe 53 is assembled, good sealing performance can be ensured;

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

[0101] As Figure 8 shown, the expansion assembly 5 further includes a ring piece 54. The ring seat 51 has an annular structure and is provided with a tapered hole 502 and a ring groove 503. Among them, the inner wall of the tapered hole 502 abuts against the fluid distributor 41, and the end of the fluid distributor 41 extends into the inside of the input pipe 2; the ring groove 503 accommodates the air storage ring 52; the ring piece 54 is connected to the air storage ring 52 and abuts against the fluid distributor 41;

[0102] In the above structure, the ring seat 51 is set to have an annular structure, and is provided with a tapered hole 502 to facilitate fitting the tapered surface of the fluid distributor 41. The ring groove 503 opened thereon is used to accommodate the air storage ring 52, ensuring the fitting area between the air storage ring 52 and the ring seat 51 and making its combined structure stable;

[0103] Furthermore, a ring piece 54 is provided on the air storage ring 52 to abut against the tapered surface of the fluid distributor 41, thereby improving the sealing performance;

[0104] Among them, a sealing gasket is provided on the surface of the tapered hole 502. In this way, when the fluid distributor 41 abuts against the ring seat 51, it cooperates with the ring piece 54 to improve the sealing effect;

[0105] Among them, the end of the fluid distributor 41 extends into the inside of the input pipe 2. In this way, better diversion of gas and liquid can be achieved, which can also reduce the length of this separation device, make its volume smaller, and improve the application convenience.

[0106] As Figure 6 、 Figure 7 and Figure 10 shown, the overflow member 6 includes a first guide ring 61, a second guide ring 62 and a second connecting rod 63. Among them, the first guide ring 61 has 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 in clearance fit with the intake pipe member 3; the second guide ring 62 has 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 inside of the second guide ring 62;

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

[0108] When the liquid is guided by the flow divider 41 and flows downward, it will first fall onto the first diversion ring 61 and gather towards the center, and then flow onto the second diversion ring 62. As the liquid increases, the liquid level in the second diversion ring 62 increases, and the liquid will overflow through the gaps between the second connecting rods 63, and then be discharged through the lower port of the casing 1;

[0109] The second diversion ring 62 is arranged in a funnel-shaped structure, and the small-diameter end of the first diversion ring 61 extends into the interior of the second diversion ring 62. When the liquid accumulates in the second diversion ring 62, the small-diameter end of the first diversion ring 61 can be immersed, so as to achieve a self-sealing effect, which can significantly reduce the discharge of liquid volatile gas;

[0110] When the machine stops, the intake pipe component 3 can quickly empty the internal gas of this gas-liquid separation device, which is beneficial to ensuring the safety of maintenance personnel;

[0111] This structure is also beneficial to reducing the cross-section of the gas-liquid flowing downward, so as to prevent the gas from being output through the liquid outlet at the lower part of the casing 1.

[0112] Such as Figure 5 and Figure 6 As shown, the intake pipe component 3 includes a conduit 31, a diversion shell 32, a diversion plate 33, an exhaust pipe 34 and an axial flow fan 35. Among them, one end of the conduit 31 is communicated with the outside, and the other end corresponds to the diversion assembly 4; the diversion shell 32 is sleeved at the port of the conduit 31, and the diversion shell 32 is provided with an air outlet 301 facing the overflow member 6; the diversion plate 33 is connected to the diversion shell 32 and corresponds to the air outlet 301;

[0113] In the above structure, the conduit 31 is used for air flow input, and the diversion shell 32 is used for guiding the air flow. When the air flow is input through the conduit 31, the air flow will be discharged downward through the air outlet 301 of the diversion shell 32, so as to prevent the liquid from falling into the conduit 31;

[0114] At the same time, since the liquid is sealed below the casing 1 through the first diversion ring 61 and the second diversion ring 62, the gas will flow upward to drive the gas input through the input pipe 2 to enter the gas-liquid recovery and treatment device upward;

[0115] Furthermore, the diversion shell 32 is connected with a diversion plate 33, which can divert the air flow to prevent the impact on the liquid accumulated in the second diversion ring 62, resulting in the downward input of the gas, so as to ensure a good gas-liquid separation effect;

[0116] Among them, the exhaust pipe 34 is arranged on the side of the second diversion ring 62 away from the first diversion ring 61, and the exhaust pipe 34 is communicated with the conduit 31 and the casing 1; the axial flow fan 35 is arranged in the conduit 31;

[0117] In the above structure, in order to ensure a small and compact volume, an axial flow fan 35 is provided for the input of air flow. The axial flow fan 35 is located inside the conduit 31, which can avoid occupying space and has a good suction effect.

[0118] Among them, the drain pipe 34 is connected to both the conduit 31 and the sleeve 1 at the same time. During application, 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. In this way, when the axial flow fan 35 is working, on the one hand, it intakes air through one end of the conduit 31 communicating with the outside, and on the other hand, it intakes air through the air inlet of the liquid storage tank. This air flow flows through the liquid storage tank and the space below the overflow member 6 of the sleeve 1 to achieve the suction and evacuation of the volatile gas, improving the recovery and treatment effect of the toxic gas.

[0119] At this time, the suction force should be well controlled to avoid the situation where the liquid in the second guide ring 62 flows out due to the wind pressure.

[0120] Specifically, a switch valve is provided at one end of the conduit 31 communicating with the outside and at the free end of the drain pipe 34 to facilitate the control of the suction and discharge conditions.

[0121] Such as Figure 6 and Figure 7 As shown, the sleeve 1 includes multiple pipe sections 11. The multiple pipe sections 11 are detachably connected and communicate with each other. Among them, the input pipe 2 and the expansion assembly 5 are connected to the same pipe section 11; the flow splitting assembly 4 is connected to one pipe section 11; the overflow member 6 is connected to one pipe section 11; the air inlet pipe member 3 is connected to one pipe section 11.

[0122] In the above structure, the sleeve 1 is composed of multiple pipe sections 11, and the input pipe 2, the expansion assembly 5, the flow splitting assembly 4, and the overflow member 6 are connected to a single pipe section 11 according to the application layout. This forms a modular structure, which is beneficial to the disassembly, maintenance, and replacement of each part, improving the convenience of maintenance.

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

[0124] During specific application, the connection between the plunger and the packing gland of the oil-gas mixed transportation pump is sealed by the housing 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-liquid can enter the input pipe 2, and subsequent separation operations can be carried out.

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

[0126] S1. A gas sensor is set in the sleeve 1 or a pressure sensor is set in the input pipe 2.

[0127] S2. The sealing component of the oil-gas mixed transportation pump is connected to the input pipe 2 through a pipeline.

[0128] S3. Vertically place the gas-liquid separation device with the input pipe 2 on the upper side. Connect the top pipe orifice of the sleeve 1 to the gas recovery and treatment device, and connect the bottom pipe orifice of the sleeve 1 to the liquid storage tank.

[0129] S4. Inflate the gas storage ring 52 through the gas charging pipe 53 to expand the gas storage ring 52 and seal the gap between the input pipe 2 and the flow splitting assembly 4.

[0130] S5. As the oil-gas mixed transportation pump operates, when the transported oil-gas medium overflows under high pressure through the sealing component, it enters the input pipe 2.

[0131] S6. As the pressure in the input pipe 2 increases, the gas storage ring 52 compresses, and the overflowed oil-gas medium enters the sleeve 1. Among them, the liquid phase medium flows downward through the flow splitting assembly 4 and enters the liquid storage tank, while the gas phase medium flows upward and enters the gas recovery and treatment device.

[0132] Among them, when the gas sensor in the sleeve 1 detects toxic gas, or the pressure sensor set in the input pipe 2 detects abnormal pressure changes, it indicates that the sealing effect of the sealing component of the oil-gas mixed transportation pump is poor or the seal fails, and the intake pipe component 3 acts to input gas to improve gas flow and promote the discharge of the overflowed gas.

[0133] Among them, when the sealing component of the oil-gas mixed transportation pump fails, the internal gas of the gas storage ring 52 is emptied through the gas charging pipe 53 to keep the maximum opening between the flow splitting assembly 4 and the input pipe 2 to accelerate the treatment of the overflowed gas-liquid.

[0134] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas-liquid separation device for an oil-gas mixed transport pump, characterized in that: It includes a sleeve, an input pipe, an air intake pipe, a flow distribution component, a tightening component and an overflow component, wherein: The two ends of the sleeve are connected; The input pipe and the air intake pipe each have one end connected to the outside, and each have one end located in the sleeve and are arranged opposite to each other; The flow splitter assembly is arranged between the input pipe and the end of the intake pipe; the flow splitter assembly includes a flow splitter and a first connecting rod, wherein the flow splitter is arranged between the input pipe and the intake pipe, and the flow splitter is in a conical structure toward the input pipe and the end of the intake pipe; a plurality of first connecting rods are provided, one end of the first connecting rod is connected to the flow splitter, and the other end is connected to the inner wall of the sleeve; the flow splitter assembly also includes a flow limiting ring and a heating element, wherein the flow limiting ring is arranged at one end of the flow splitter toward the intake pipe, and the diameter of the flow limiting ring is larger than the diameter of the intake pipe; the end of the flow limiting ring away from the flow splitter is folded inward to accommodate the heating element; The expansion assembly is arranged between the diverter assembly and the input pipe, and is used for adjusting the opening between the diverter assembly and the input pipe; the expansion assembly comprises a ring seat, an air storage ring and an air charging pipe, wherein the ring seat abuts one end of the diverter body toward the input pipe; the air storage ring is an elastic member, the air storage ring is arranged on the ring seat, and the air storage ring abuts the pipe mouth of the input pipe; the ring seat is provided with a through hole connected to the air storage ring, one end of the air charging pipe is connected to the ring seat and penetrates the through hole, and the other end passes through the sleeve; the expansion assembly also comprises a ring sheet, the ring seat is a circular ring structure, and is provided with a tapered hole and an annular groove, wherein the inner wall of the tapered hole abuts the diverter body, and the end of the diverter body extends into the interior of the input pipe; the annular groove accommodates the air storage ring; the ring sheet is connected to the air storage ring and abuts the diverter body; The overflow member comprises a first guide ring, a second guide ring and a second connecting rod, wherein the first guide ring is 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 gap-matched with the intake pipe; the second guide ring is a funnel-shaped structure, the small-diameter end of the second guide ring is connected to the outer wall of the intake pipe, and the large-diameter end is connected to the inner wall of the sleeve through the second connecting rod; the small-diameter end of the first guide ring extends into the interior of the second guide ring; A gas sensor is arranged in the sleeve, or a pressure sensor is arranged in the input pipe.

2. The gas-liquid separation device for an oil-gas mixed transport pump according to claim 1, characterized in that: The air intake pipe comprises a conduit, a guide shell, a guide plate, an exhaust pipe and an axial flow fan, wherein: One end of the conduit is in communication with the outside, and the other end corresponds to the flow diversion component; The guide shell is sleeved at the port of the conduit, and the guide shell is provided with an air outlet facing the overflow member; The guide plate is connected to the guide shell and corresponds to the air outlet; 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 conduit and the sleeve; The axial flow fan is arranged in the duct.

3. The gas-liquid separation device for an oil-gas mixed transport pump according to claim 1, characterized in that: The sleeve comprises a plurality of pipe sections, which are detachably connected and interpenetrate each other, wherein: The input pipe and the expansion assembly are connected to the same pipe section; The flow splitter assembly is connected to one of the pipe sections; The overflow member is connected to one of the pipe sections; The air inlet pipe member is connected to one of the pipe sections.

4. An oil-gas mixed transport pump, characterized in that: It comprises a gas-liquid separation device for an oil-gas mixed flow pump as described in any one of claims 1 to 3, wherein the sealing component of the oil-gas mixed flow pump is connected to the input pipe.

5. An application method of the gas-liquid separation device for an oil-gas mixed transport pump according to claim 1, characterized in that: The following steps are involved: S1. A gas sensor is arranged in the casing, or a pressure sensor is arranged in the input pipe. S2, connect the sealing component of the oil-gas mixed pump to the input pipe through a pipeline, S3, the gas-liquid separation device is placed vertically, the input pipe is located on the upper side, the top pipe opening of the casing is connected to the gas recovery and processing device, and the bottom pipe opening of the casing is connected to the liquid storage tank, S4, inflating the gas storage ring through the gas filling pipe to expand the gas storage ring and seal the gap between the input pipe and the flow dividing assembly, 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. 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; When the gas sensor in the casing detects toxic gas, or the pressure sensor in the input pipe detects 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 is actuated 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 is emptied through the inflation pipe, and the opening between the diverter component and the input pipe is kept at the maximum to speed up the processing of the overflowed gas and liquid.

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