Permanent magnet composite plunger multiphase multiphase pump

Abstract

The invention discloses a permanent magnet composite plunger multiphase multiphase multiphase pump, and relates to the technical field of ground conveying, the permanent magnet composite plunger multiphase multiphase multiphase pump comprises an outer shell, a liquid inlet and outlet module and at least one group of action modules, the action modules are arranged in the outer shell, and a circle of circulation channel is formed between the periphery of each action module and the inner wall of the outer shell; a liquid inlet and a liquid outlet are formed in the two opposite side walls of the outer shell correspondingly and communicate with the circulation channel, the two ends of the action module can communicate with the circulation channel, the liquid inlet and outlet module is located in the circulation channel, and when the action module acts, the liquid inlet and outlet module is connected with the liquid inlet and outlet module. And the produced liquid can enter the circulation channel through the liquid inlet, and the produced liquid in the circulation channel reaches the liquid outlet through different positions of the liquid inlet and outlet module and is discharged. Environment-friendly and safe conveying can be achieved, and long-term reliable operation is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of ground transportation, and particularly to a permanent magnet composite plunger multiphase mixed transportation pump. Background Art

[0002] In the oil production well area of an oilfield, the produced fluids from each wellhead are first transported along the oil pipeline to the large tanks in the tank farm, and then transported from the tank farm to the downstream refinery. However, the above transportation method has the following problems: (1) For the large tanks in the tank farm, they are generally atmospheric tanks with a breather valve structure at the top. As the oil and gas mixture transported from each wellhead enters the tank, a large amount of oil mist will emerge from the tank top, thus polluting the environment and posing a safety hazard at the same time; (2) The large tanks in the tank farm occupy a large area and have high management costs.

[0003] Currently, the closed gathering and transportation method is mostly adopted in the oil production well area of an oilfield. Various ground transportation pumps are the key parts providing transportation power. However, several commonly used transportation pumps all have certain defects. For example: (1) Taking the screw pump as an example, its structure is complex, the replacement and repair of vulnerable parts are difficult, and the production downtime is long; (2) Taking the centrifugal pump as an example, its pump efficiency is relatively low. If there is a large amount of gas in the incoming fluid, it is very easy to cause the transportation to be interrupted. This situation is called slug flow, and this pump has poor adaptability to slug flow.

[0004] Based on this, there is an urgent need to design a produced fluid transportation device that can solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a permanent magnet composite plunger multiphase mixed transportation pump to solve the problems existing in the above prior art, achieve environmentally friendly and safe transportation, and ensure long-term reliable operation.

[0006] To achieve the above purpose, the present invention provides the following solutions: The present invention provides a permanent magnet composite plunger multiphase mixed transportation pump, including an outer shell, an inlet and outlet module, and at least one set of action modules. The action modules are arranged inside the outer shell, and a circular flow channel is formed between the outer periphery of the action modules and the inner wall of the outer shell. The outer shell is respectively provided with an incoming fluid port and a drainage port on two opposite side walls, and both the incoming fluid port and the drainage port are communicated with the flow channel. Both ends of the action modules can be communicated with the flow channel. The inlet and outlet module is located in the flow channel. When the action modules act, it can enable the produced fluid to enter the flow channel through the incoming fluid port, and enable the produced fluid in the flow channel to reach the drainage port through different positions of the inlet and outlet module and be discharged.

[0007] In one embodiment, the liquid inlet and outlet module includes a first liquid inlet valve, a second liquid inlet valve, a first liquid outlet valve, and a second liquid outlet valve that are all blocked in the flow channel. The first liquid inlet valve and the first liquid outlet valve are arranged close to the first side wall of the outer housing. The second liquid inlet valve and the second liquid outlet valve are arranged close to the second side wall of the outer housing. The first side wall and the second side wall are arranged opposite to each other. The side wall where the liquid inlet and the liquid discharge port are located is perpendicular to the first side wall. The first liquid inlet valve and the second liquid inlet valve are arranged close to the liquid inlet. The first liquid outlet valve and the second liquid outlet valve are arranged close to the liquid discharge port. When the action module acts, it can drive the first liquid inlet valve and the second liquid outlet valve to open, and the second liquid inlet valve and the first liquid outlet valve to close, or drive the second liquid inlet valve and the first liquid outlet valve to open, and the first liquid inlet valve and the second liquid outlet valve to close.

[0008] In one embodiment, the first liquid inlet valve, the second liquid inlet valve, the first liquid outlet valve, and the second liquid outlet valve all include a valve seat and a valve ball. The valve seat is installed in the flow channel, and the outer wall of the valve seat can fit with the inner wall of the flow channel. A blocking hole is formed in the middle of the valve seat. There is a gap between the outer circumference of the valve ball and the inner wall of the flow channel. The valve ball is located on the side of the valve seat close to the liquid discharge port, and the valve ball can contact one side of the valve seat and block the blocking hole. The valve ball can also be pushed by the produced liquid to separate from the valve seat and open the blocking hole.

[0009] In one embodiment, the first liquid inlet valve and the second liquid inlet valve are symmetrically arranged, and the first liquid outlet valve and the second liquid outlet valve are symmetrically arranged.

[0010] In one embodiment, the action module includes a piston mover and a pump barrel stator. The pump barrel stator is located on the outer periphery of the piston mover, and the piston mover can reciprocate in the pump barrel stator. The outer wall of the piston mover can seal the inner wall of the pump barrel stator. One end of the piston mover communicates between the first liquid inlet valve and the second liquid inlet valve, and the other end of the piston mover communicates between the first liquid outlet valve and the second liquid outlet valve. When the piston mover moves in the pump barrel stator towards the direction close to the second side wall, the first liquid inlet valve and the second liquid outlet valve open, and the second liquid inlet valve and the first liquid outlet valve close. When the piston mover moves in the pump barrel stator towards the direction close to the first side wall, the second liquid inlet valve and the first liquid outlet valve open, and the first liquid inlet valve and the second liquid outlet valve close.

[0011] In one embodiment, the piston mover is made of a permanent magnetic material, and a three-phase electromagnetic coil is provided at the pump barrel stator.

[0012] In one embodiment, sealing elements are provided at both ends of the piston mover, and the sealing elements are in interference fit with the inner wall of the pump barrel stator.

[0013] In one embodiment, the sealing element is a sealing washer.

[0014] In one embodiment, there are multiple action modules, and the multiple action modules are arranged in sequence along the direction perpendicular to the first side wall. One end of each action module communicates between the first liquid inlet valve and the second liquid inlet valve, and the other end of each action module communicates between the first liquid outlet valve and the second liquid outlet valve.

[0015] In one embodiment, a liquid inlet pipeline is connected to the liquid inlet, and a liquid discharge pipeline is connected to the liquid discharge port.

[0016] The present invention has achieved the following technical effects compared with the prior art: The permanent magnet composite plunger multiphase mixing and transportation pump provided by the present invention includes a housing, a liquid inlet and outlet module, and at least one group of action modules. The action modules are arranged in the housing, and a circulation channel is formed between the outer periphery of the action modules and the inner wall of the housing. The produced liquid is used for circulation in the circulation channel. The housing is provided with a liquid inlet and a liquid discharge port on opposite side walls respectively, and both the liquid inlet and the liquid discharge port are communicated with the circulation channel. Therefore, the produced liquid can enter the circulation channel through the liquid inlet and then be discharged through the liquid discharge port to realize the pumping of the produced liquid. Both ends of the action module can communicate with the circulation channel, and the liquid inlet and outlet module is located in the circulation channel. Therefore, the action of the action module can act on the produced liquid in the circulation channel, and the produced liquid acts on the liquid inlet and outlet module to realize the pumping of the produced liquid. When the action module acts, the produced liquid can enter the circulation channel through the liquid inlet, and the produced liquid in the circulation channel can reach the liquid discharge port through different positions of the liquid inlet and outlet module and be discharged, realizing the pumping of the produced liquid. The overall structure is simple and occupies a small area. At the same time, through the above design, the circulation of the produced liquid is completed in the circulation channel, and no tank needs to be set up. Therefore, a large amount of oil mist can be effectively avoided when the oil-gas mixture enters, environmental pollution is reduced, and safety is improved. Description of the Drawings

[0017] 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 use in the embodiments. Obviously, the drawings in the following description 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.

[0018] Figure 1 It is a schematic structural diagram of the permanent magnet composite plunger multiphase mixing and transportation pump in the present invention when it includes one action module; Figure 2Schematic diagram of the structure of the permanent magnet composite plunger multiphase mixed transportation pump in the present invention when it includes multiple action modules; In the figure: 1 - outer casing, 2 - liquid inlet, 3 - liquid outlet, 4 - piston mover, 5 - pump barrel stator, 6 - first liquid inlet valve, 7 - first liquid outlet valve, 8 - second liquid inlet valve, 9 - second liquid outlet valve. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] The purpose of the present invention is to provide a permanent magnet composite plunger multiphase mixed transportation pump to solve the problems existing in the prior art, realize environmentally friendly and safe transportation, and ensure long-term reliable operation.

[0021] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0022] As Figure 1 - Figure 2 shown, this embodiment provides a permanent magnet composite plunger multiphase mixed transportation pump, including an outer casing 1, an inlet and outlet liquid module, and at least one set of action modules. The action modules are arranged inside the outer casing 1, and a circulation channel is formed between the outer periphery of the action modules and the inner wall of the outer casing 1. The produced liquid is used to circulate in the circulation channel. The outer casing 1 is respectively provided with a liquid inlet 2 and a liquid outlet 3 on two opposite side walls, and both the liquid inlet 2 and the liquid outlet 3 are communicated with the circulation channel. Furthermore, the produced liquid can enter the circulation channel through the liquid inlet 2 and then be discharged through the liquid outlet 3 to realize the pumping of the produced liquid. Both ends of the action module can be communicated with the circulation channel, and the inlet and outlet liquid module is located in the circulation channel. Therefore, when the action module acts, it can act on the produced liquid in the circulation channel, and through the produced liquid acting on the inlet and outlet liquid module, the pumping of the produced liquid is realized. When the action module acts, the produced liquid can enter the circulation channel through the liquid inlet 2, and the produced liquid in the circulation channel can reach the liquid outlet 3 and be discharged through different positions of the inlet and outlet liquid module, realizing the pumping of the produced liquid. The overall structure is simple and occupies a small area. At the same time, through the above design, the circulation of the produced liquid is completed entirely in the circulation channel, and there is no need to set up a tank body. Therefore, it can effectively avoid a large amount of oil mist from emerging when the oil and gas mixture enters, reduce environmental pollution, and improve safety.

[0023] Specifically, the liquid inlet and outlet module includes a first liquid inlet valve 6, a second liquid inlet valve 8, a first liquid outlet valve 7, and a second liquid outlet valve 9, all of which are blocked in the flow channel. By opening and closing the first liquid inlet valve 6, the second liquid inlet valve 8, the first liquid outlet valve 7, and the second liquid outlet valve 9, the flow of the produced liquid is realized or not. The first liquid inlet valve 6 and the first liquid outlet valve 7 are arranged close to the first side wall of the outer housing 1, and the second liquid inlet valve 8 and the second liquid outlet valve 9 are arranged close to the second side wall of the outer housing 1, and the first side wall and the second side wall are arranged opposite to each other. The side wall where the liquid inlet 2 and the drain port 3 are located is perpendicular to the first side wall. The first liquid inlet valve 6 and the second liquid inlet valve 8 are arranged close to the liquid inlet 2, and the first liquid outlet valve 7 and the second liquid outlet valve 9 are arranged close to the drain port 3. Thus, after the produced liquid enters the communication channel through the liquid inlet 2, it can reach the first liquid inlet valve 6 and the second liquid inlet valve 8 in two paths respectively, and the produced liquid discharged through the first liquid outlet valve 7 and the second liquid outlet valve 9 can be discharged through the drain port 3. When the action module acts, it can drive the first liquid inlet valve 6 and the second liquid outlet valve 9 to open, and the second liquid inlet valve 8 and the first liquid outlet valve 7 to close. At this time, the produced liquid entering from the liquid inlet 2 can enter the area between the first liquid inlet valve 6 and the first liquid outlet valve 7 through the first liquid inlet valve 6, and the produced liquid located between the second liquid inlet valve 8 and the second liquid outlet valve 9 can be discharged through the drain port 3, or drive the second liquid inlet valve 8 and the first liquid outlet valve 7 to open, and the first liquid inlet valve 6 and the second liquid outlet valve 9 to close. At this time, the produced liquid entering from the liquid inlet 2 can enter the area between the second liquid inlet valve 8 and the second liquid outlet valve 9 through the second liquid inlet valve 8, and the produced liquid located between the first liquid inlet valve 6 and the first liquid outlet valve 7 can be discharged through the drain port 3, realizing that no matter how the action module acts, there is always the pumping in and pumping out of the produced liquid, and improving the pumping efficiency of the produced liquid.

[0024] The first liquid inlet valve 6, the second liquid inlet valve 8, the first liquid outlet valve 7, and the second liquid outlet valve 9 all include a valve seat and a valve ball. Through the setting of the valve seat and the valve ball, the structure is simple, the cost is low, and it is also convenient to replace. The valve seat is installed in the flow channel, and the outer wall of the valve seat can fit with the inner wall of the flow channel. A blocking hole is opened in the middle of the valve seat, so that the produced liquid cannot pass through the outer periphery of the valve seat, ensuring that the produced liquid can only pass through the blocking hole and act on the valve ball. There is a gap between the outer periphery of the valve ball and the inner wall of the flow channel to avoid affecting the passage of the produced liquid. The valve ball is located on the side of the valve seat close to the drain port 3, and the valve ball can contact one side of the valve seat and block the blocking hole. At this time, the produced liquid cannot pass through the blocking hole. The valve ball can also be pushed by the produced liquid to disengage from the valve seat and open the blocking hole, and the produced liquid can pass through the blocking hole to realize the pumping of the produced liquid. After the pumping is completed, the valve ball can also reset under the action of gravity to contact the valve seat and block the blocking hole.

[0025] The first liquid inlet valve 6 and the second liquid inlet valve 8 are symmetrically arranged, and the first liquid outlet valve 7 and the second liquid outlet valve 9 are symmetrically arranged, so that the first liquid inlet valve 6, the second liquid inlet valve 8, the first liquid outlet valve 7 and the second liquid outlet valve 9 are respectively located at the four corners of a rectangle.

[0026] As a specific embodiment, as Figure 1 shown, there is one action module, and the action module includes a piston mover 4 and a pump barrel stator 5. The pump barrel stator 5 is located on the outer periphery of the piston mover 4, and the piston mover 4 can reciprocate within the pump barrel stator 5. The outer wall of the piston mover 4 can seal the inner wall of the pump barrel stator 5. Thus, through the cooperation of the piston mover 4 and the piston stator, the pressure change at both ends of the piston stator is realized. One end of the piston mover 4 communicates between the first liquid inlet valve 6 and the second liquid inlet valve 8, and the other end of the piston mover 4 communicates between the first liquid outlet valve 7 and the second liquid outlet valve 9. When the piston mover 4 moves in the pump barrel stator 5 towards the direction close to the second side wall, the pressure on the side of the piston mover 4 close to the first side wall decreases. Thus, the valve ball of the first liquid outlet valve 7 tightly adheres to the valve seat, while the produced liquid pushes open the valve ball of the first liquid inlet valve 6, opening the blocking hole of the first liquid inlet valve 6, and the produced liquid can enter the area between the first liquid inlet valve 6 and the first liquid outlet valve 7. At the same time, the pressure on the side of the piston mover 4 close to the second side wall increases. Thus, the valve ball of the second liquid inlet valve 8 tightly adheres to the valve seat, while the produced liquid between the second liquid inlet valve 8 and the second liquid outlet valve 9 pushes open the valve ball of the second liquid outlet valve 9, opening the blocking hole of the second liquid outlet valve 9, and the produced liquid between the second liquid inlet valve 8 and the second liquid outlet valve 9 is discharged through the second liquid outlet valve 9. Conversely, when the piston mover 4 moves in the pump barrel stator 5 towards the direction close to the first side wall, the pressure on the side of the piston mover 4 close to the second side wall decreases. Thus, the valve ball of the second liquid outlet valve 9 tightly adheres to the valve seat, while the produced liquid pushes open the valve ball of the second liquid inlet valve 8, opening the blocking hole of the second liquid inlet valve 8, and the produced liquid can enter the area between the second liquid inlet valve 8 and the second liquid outlet valve 9. At the same time, the pressure on the side of the piston mover 4 close to the first side wall increases. Thus, the valve ball of the first liquid inlet valve 6 tightly adheres to the valve seat, while the produced liquid between the first liquid inlet valve 6 and the first liquid outlet valve 7 pushes open the valve ball of the first liquid outlet valve 7, opening the blocking hole of the first liquid outlet valve 7, and the produced liquid between the first liquid inlet valve 6 and the first liquid outlet valve 7 is discharged through the first liquid outlet valve 7.

[0027] In this embodiment, through the above design of the structure of the action module, the reciprocating movement of the piston mover 4 is used to realize the opening and closing of each liquid inlet valve and each liquid outlet valve. At the same time, the piston mover 4 can move to both ends of the pump barrel stator 5 within the pump barrel stator 5, facilitating the discharge of gas, ensuring the vacuum degree inside the outer housing 1 during pumping, improving the adaptability to slug flow, and enabling the permanent magnet composite plunger multiphase mixing pump to operate reliably for a long time.

[0028] The piston mover 4 is made of a permanent magnet material, and three-phase electromagnetic coils are provided at the pump barrel stator 5. Then, a linear motor is formed through the cooperation of the piston mover 4 and the pump barrel stator 5, so that the permanent magnet composite plunger multiphase mixing pump in this embodiment can not only realize the pumping of the produced fluid, but also act as a driving motor to provide power for itself, and the overall structure is compact.

[0029] Sealing elements are provided at both ends of the piston mover 4, and the sealing elements are in interference fit with the inner wall of the pump barrel stator 5, thereby reducing the leakage amount between the outer wall of the piston mover 4 and the inner wall of the pump barrel stator 5.

[0030] The sealing element is a sealing washer, a metal elastic sealing ring, etc. Those skilled in the art can select a suitable sealing element according to actual needs, as long as it can seal between the outer wall of the piston mover 4 and the inner wall of the pump barrel stator 5.

[0031] A liquid inlet pipeline is connected to the liquid inlet 2, and a liquid discharge pipeline is connected to the liquid discharge port 3.

[0032] As another specific embodiment, as Figure 2 shown, the action modules are set to be multiple, and the multiple action modules are arranged in sequence along the direction perpendicular to the first side wall. One end of each action module is connected to the pipeline to be confluent and communicated between the first inlet valve 6 and the second inlet valve 8, and the other end of each action module is connected to the pipeline to be confluent and communicated between the first outlet valve 7 and the second outlet valve 9. Then, through the synchronous action of the multiple action modules, the pumping efficiency is improved.

[0033] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A permanent magnet composite plunger multiphase mixed pump, characterized in that: It includes an outer shell, an inlet and outlet liquid module and at least one group of action modules, wherein the action module is arranged in the outer shell, and a circle of circulation channel is formed between the outer periphery of the action module and the inner wall of the outer shell, the outer shell is provided with a liquid inlet and a liquid discharge port on two opposite side walls, respectively, and the liquid inlet and the liquid discharge port are both connected with the circulation channel, and both ends of the action module can be connected with the circulation channel, the inlet and outlet liquid module is located in the circulation channel, and when the action module is actuated, the produced liquid can enter the circulation channel through the inlet liquid port, and the produced liquid in the circulation channel can reach the liquid discharge port through different positions of the inlet and outlet liquid module and be discharged.

2. The permanent magnet composite plunger multiphase mixed flow pump according to claim 1 is characterized in that: The liquid inlet and outlet module includes a first liquid inlet valve, a second liquid inlet valve, a first liquid outlet valve and a second liquid outlet valve, all of which are blocked in the circulation channel. The first liquid inlet valve and the first liquid outlet valve are arranged close to the first side wall of the outer shell, the second liquid inlet valve and the second liquid outlet valve are arranged close to the second side wall of the outer shell, and the first side wall and the second side wall are arranged opposite to each other. The side wall where the liquid inlet and the liquid outlet are located is perpendicular to the first side wall. The first liquid inlet valve and the second liquid inlet valve are arranged close to the liquid inlet, and the first liquid outlet valve and the second liquid outlet valve are arranged close to the liquid outlet. When the action module is actuated, it can drive the first liquid inlet valve and the second liquid outlet valve to open, and the second liquid inlet valve and the first liquid outlet valve to close, or drive the second liquid inlet valve and the first liquid outlet valve to open, and the first liquid inlet valve and the second liquid outlet valve to close.

3. The permanent magnet composite plunger multiphase mixed flow pump according to claim 2 is characterized in that: The first liquid inlet valve, the second liquid inlet valve, the first liquid outlet valve and the second liquid outlet valve all include a valve seat and a valve ball. The valve seat is installed in the circulation channel, and the outer wall of the valve seat can fit with the inner wall of the circulation channel. A sealing hole is opened in the middle of the valve seat. There is a gap between the outer periphery of the valve ball and the inner wall of the circulation channel. The valve ball is located on the side of the valve seat close to the discharge port, and the valve ball can contact one side of the valve seat and seal the sealing hole. The valve ball can also detach from the valve seat under the push of the produced fluid and open the sealing hole.

4. The permanent magnet composite plunger multiphase mixed flow pump according to claim 2 is characterized in that: The first liquid inlet valve and the second liquid inlet valve are symmetrically arranged, and the first liquid outlet valve and the second liquid outlet valve are symmetrically arranged.

5. The permanent magnetic composite plunger multiphase mixed flow pump according to claim 2 is characterized in that: The action module includes a piston mover and a pump barrel stator, the pump barrel stator is located at the outer periphery of the piston mover, and the piston mover can reciprocate in the pump barrel stator, the outer wall of the piston mover can seal the inner wall of the pump barrel stator, and one end of the piston mover is connected between the first liquid inlet valve and the second liquid inlet valve, and the other end of the piston mover is connected between the first liquid outlet valve and the second liquid outlet valve, and when the piston mover moves in the pump barrel stator toward the second side wall, the first liquid inlet valve and the second liquid outlet valve are opened, and the second liquid inlet valve and the first liquid outlet valve are closed, and when the piston mover moves in the pump barrel stator toward the first side wall, the second liquid inlet valve and the first liquid outlet valve are opened, and the first liquid inlet valve and the second liquid outlet valve are closed.

6. The permanent magnet composite plunger multiphase mixed flow pump according to claim 5 is characterized in that: The piston mover is made of permanent magnetic material, and a three-phase electromagnetic coil is arranged at the stator of the pump barrel.

7. The permanent magnet composite plunger multiphase mixed flow pump according to claim 5 is characterized in that: Sealing elements are provided at both ends of the piston mover, and the sealing elements are interference fit with the inner wall of the pump barrel stator.

8. The permanent magnet composite plunger multiphase mixed flow pump according to claim 7 is characterized in that: The sealing element is a sealing gasket.

9. The permanent magnet composite plunger multiphase mixed flow pump according to claim 2, characterized in that: There are multiple action modules, and the multiple action modules are arranged in sequence along a direction perpendicular to the first side wall, and one end of each action module is connected between the first liquid inlet valve and the second liquid inlet valve, and the other end of each action module is connected between the first liquid outlet valve and the second liquid outlet valve.

10. The permanent magnet composite plunger multiphase mixed flow pump according to claim 1, characterized in that: The liquid inlet is connected to a liquid inlet pipeline, and the liquid discharge outlet is connected to a liquid discharge pipeline.

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