Diverting valve group and multiphase flow mixed transportation device

Abstract

The utility model discloses a diverting valve group and multiphase flow mixed transportation device, including first cylinder body, second cylinder body, pump, drive device, transmission mechanism, first cut-off subassembly and second cut-off subassembly, the inlet and outlet of pump are respectively communicated with first cylinder body and second cylinder body, the first cylinder body is equipped with first diverting flow inlet and second diverting flow inlet, and the second cylinder body is equipped with second diverting flow inlet and second diverting flow outlet. The second cylinder body is provided with a first directional flow outlet and a second directional flow outlet, and the driving device drives the first cut-off assembly and the second cut-off assembly to act through the transmission mechanism; when the first cut-off assembly opens the first divergent flow inlet and closes the first divergent flow outlet, the second cut-off assembly closes the second divergent flow inlet and opens the second divergent flow outlet, and when the first cut-off assembly closes the first divergent flow inlet and opens the first divergent flow outlet, the second cut-off assembly closes the second divergent flow inlet and opens the second divergent flow outlet. The second cut-off assembly opens the second divergent flow inlet and closes the second divergent flow outlet. The utility model has the advantages of simple and reliable structure, lower cost and stronger durability.

Description

Technical Field

[0001] This utility model relates to the technical field of media conveying devices, and in particular to a directional valve group and a multiphase flow mixing device. Background Technology

[0002] In oil extraction, the products from oil wells often contain a certain amount of natural gas, water, and solid particles. In order to reduce wellhead back pressure, increase crude oil production, improve the economic benefits of development, and achieve closed-loop transportation of oil and gas, oil and gas mixed transportation technology is being increasingly widely used in oil and gas development.

[0003] Oil and gas blending technology is a new technology that mixes and pressurizes crude oil products for direct transport to a combined station. Compared with traditional oil production processes, it can reduce the need for a gas pipeline and oil-gas separation equipment. For offshore oil fields, it can reduce platform size. Oil and gas blending technology not only makes full use of energy but also improves environmental conditions, resulting in significant economic and social benefits.

[0004] Utility model patent application number CN202023352289.3 discloses a multiphase flow mixing and conveying device and a multiphase flow mixing and conveying application system. It includes a first tank, a second tank, and a reversing mechanism. The reversing mechanism drives the liquid in the first and second tanks to circulate back and forth, causing the first and second tanks to alternately form a vacuum suction chamber and / or a compression discharge chamber, thereby achieving continuous mixing and conveying of liquids, gases, or gas-liquid mixtures. This structure requires four sets of reversing valves, controlled by a PLC, to transport liquid from the first tank to the second tank or vice versa. The reversing mechanism is relatively complex, with a large number of reversing valves, and the energy consumption for driving the valves is high, resulting in high costs. Therefore, it is necessary to improve this structure. Utility Model Content

[0005] The purpose of this utility model is to provide a directional valve assembly, which has the advantages of simple and reliable structure, lower cost and stronger durability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a directional valve assembly, comprising a first cylinder, a second cylinder, a pump, a drive device, a transmission mechanism, a first shut-off assembly, and a second shut-off assembly. The inlet and outlet of the pump are respectively connected to the first cylinder and the second cylinder. The first cylinder is provided with a first directional flow inlet and a second directional flow inlet, and the second cylinder is provided with a first directional flow outlet and a second directional flow outlet. The first shut-off assembly is used to control the opening and closing of the first directional flow inlet and the first directional flow outlet, and the second shut-off assembly is used to control the opening and closing of the second directional flow inlet and the second directional flow outlet. The drive device drives the first shut-off assembly and the second shut-off assembly to operate through the transmission mechanism. When the first shut-off assembly opens the first directional flow inlet and closes the first directional flow outlet, the second shut-off assembly closes the second directional flow inlet and opens the second directional flow outlet. When the first shut-off assembly closes the first directional flow inlet and opens the first directional flow outlet, the second shut-off assembly opens the second directional flow inlet and closes the second directional flow outlet.

[0007] By adopting the above technical solution, the drive device drives the first and second cutting components to move through the transmission mechanism, thereby realizing the opening and closing control of two outlets and two inlets, thus changing the fluid flow direction. Compared with the existing technology that uses four sets of reversing valves for control, this solution has the advantages of simpler and more reliable structure, lower cost and stronger durability.

[0008] The present invention is further configured such that the first cutting-off assembly includes a first valve stem, and the second cutting-off assembly includes a second valve stem. Both ends of the first valve stem and both ends of the second valve stem extend into the first cylinder and the second cylinder, respectively. The first cylinder is provided with a first inlet valve seat and a second inlet valve seat at positions corresponding to the inner ends of the first and second branch flow inlets, respectively. The second cylinder is provided with a first outlet valve seat and a second outlet valve seat at positions corresponding to the inner ends of the first and second branch flow outlets, respectively. Both ends of the first valve stem are provided with a first inlet valve core and a first outlet valve core for cooperating with the first inlet valve seat and the first outlet valve seat, respectively. Both ends of the second valve stem are provided with a second inlet valve core and a second outlet valve core for cooperating with the second inlet valve seat and the second outlet valve seat, respectively.

[0009] By adopting the above technical solution, the drive device controls the transmission mechanism to drive the two valve stems to move simultaneously, so that the two valve cores on the two valve stems respectively abut or separate from the corresponding valve seats, thereby realizing the switching of fluid flow direction. The cut-off component structure is very simple, which is conducive to the initial assembly and subsequent maintenance operations.

[0010] The present invention is further configured such that the transmission mechanism includes a crankshaft, a transmission housing is provided between the first cylinder block and the second cylinder block, the crankshaft is rotatably mounted on the transmission housing, and a first cam and a second cam are respectively provided on the crankshaft at positions corresponding to the inside of the transmission housing, the first cam and the second cam have opposite directions of protrusion, and the first cam and the second cam on the crankshaft are respectively connected to the first valve stem and the second valve stem for transmission.

[0011] By adopting the above technical solution, the transmission mechanism composed of a crankshaft and two cams can drive the first valve stem and the second valve stem to move in opposite directions, thereby realizing the opening and closing of the corresponding inlet and outlet, and thus realizing the switching of fluid flow direction.

[0012] The present invention is further configured such that the driving device is a motor, a rotary cylinder, or a rotary hydraulic cylinder.

[0013] By adopting the above technical solutions, appropriate drive devices can be selected according to working conditions and design requirements, providing a wider range of choices.

[0014] The present invention is further configured such that the number of the first cutting component and the second cutting component are each at least one set, the number of the first branch flow inlet and the second branch flow inlet are equivalent to the number of the first cutting component, and the number of the first branch flow outlet and the second branch flow outlet are equivalent to the number of the second cutting component.

[0015] By adopting the above technical solution, fluid transfer and flow direction switching between two or more tanks can be realized.

[0016] This utility model also provides a multiphase flow mixing device, including the above-mentioned diverting valve group, and two tanks. One tank is connected to the first diverting flow inlet and the second diverting flow outlet through two pipelines respectively, and the other tank is connected to the second diverting flow inlet and the first diverting flow outlet through two pipelines respectively.

[0017] By adopting the above technical solution, the multiphase flow mixing device uses this directional valve group to switch the direction of fluid transport. The structure is simpler and more reliable, which can effectively reduce costs and make it more durable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Example 1 when the fluid enters from the second branch flow inlet and exits from the first branch flow outlet;

[0019] Figure 2 This is a schematic diagram of the structure of Example 1 when the fluid enters from the first branch flow inlet and exits from the second branch flow outlet;

[0020] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0021] In the picture:

[0022] 1. First cylinder block; 2. Second cylinder block; 3. Pump; 5. Transmission mechanism; 6. First cut-off assembly; 7. Second cut-off assembly; 8. First branch flow inlet; 9. Second branch flow inlet; 10. First branch flow outlet; 11. Second branch flow outlet; 12. First valve stem; 13. Second valve stem; 14. First inlet valve seat; 15. Second inlet valve seat; 16. First outlet valve seat; 17. Second outlet valve seat; 18. First inlet valve core; 19. First outlet valve core; 20. Second inlet valve core; 21. Second outlet valve core; 22. Crankshaft; 23. Transmission housing; 24. First cam; 25. Second cam; 26. Tank. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: As shown in the attached document Figure 1 and attached Figure 2The illustrated directional valve assembly includes a first cylinder 1, a second cylinder 2, a pump 3, a drive unit, a transmission mechanism 5, a first shut-off assembly 6, and a second shut-off assembly 7. The inlet and outlet of the pump 3 are respectively connected to the first cylinder 1 and the second cylinder 2. The first cylinder 1 and the second cylinder 2 have enclosed internal cavities. The first cylinder 1 is provided with a first directional flow inlet 8 and a second directional flow inlet 9, and the second cylinder 2 is provided with a first directional flow outlet 10 and a second directional flow outlet 11. The first shut-off assembly 6 is used to control the opening and closing of the first directional flow inlet 8 and the first directional flow outlet 10. The second cutting-off assembly 7 controls the opening and closing of the second diverting flow inlet 9 and the second diverting flow outlet 11. The driving device drives the first cutting-off assembly 6 and the second cutting-off assembly 7 through the transmission mechanism 5. When the first cutting-off assembly 6 opens the first diverting flow inlet 8 and closes the first diverting flow outlet 10, the second cutting-off assembly 7 closes the second diverting flow inlet 9 and opens the second diverting flow outlet 11. Conversely, when the first cutting-off assembly 6 closes the first diverting flow inlet 8 and opens the first diverting flow outlet 10, the second cutting-off assembly 7 opens the second diverting flow inlet 9 and closes the second diverting flow outlet 11. By driving the first cutting-off assembly 6 and the second cutting-off assembly 7 through the transmission mechanism 5, the driving device can achieve the opening and closing control of two outlets and two inlets, thereby changing the fluid flow direction. Compared with the existing technology that uses four sets of reversing valves for control, this solution has the advantages of simpler and more reliable structure, lower cost, and greater durability.

[0025] As attached Figure 1 and attached Figure 2As shown, the first cutting-off assembly 6 includes a first valve stem 12, and the second cutting-off assembly 7 includes a second valve stem 13. Both ends of the first valve stem 12 and both ends of the second valve stem 13 extend into the first cylinder 1 and the second cylinder 2, respectively. Corresponding through holes are provided on both the first cylinder 1 and the second cylinder 2 for the first valve stem 12 and the second valve stem 13 to extend into. The first cylinder 1 is provided with a first inlet valve seat 14 and a second inlet valve seat 15 at positions corresponding to the inner ends of the first branch flow inlet 8 and the second branch flow inlet 9, respectively. The second cylinder 2 is provided with positions corresponding to the first branch flow outlet 10 and the second branch flow outlet. The inner ends of valve stem 11 are respectively provided with a first outlet valve seat 16 and a second outlet valve seat 17. The two ends of the first valve stem 12 are respectively provided with a first inlet valve core 18 and a first outlet valve core 19 for cooperating with the first inlet valve seat 14 and the first outlet valve seat 16. The two ends of the second valve stem 13 are respectively provided with a second inlet valve core 20 and a second outlet valve core 21 for cooperating with the second inlet valve seat 15 and the second outlet valve seat 17. The sealing surfaces of all valve seats and valve cores are conical, resulting in better sealing and reduced leakage when each valve core abuts against its corresponding valve seat. The drive device controls the transmission mechanism 5 to simultaneously drive the two valve stems, causing the two corresponding valve cores on each valve stem to abut or separate from their respective valve seats, thereby switching the fluid flow direction. The cut-off assembly structure is very simple, facilitating initial assembly and subsequent maintenance.

[0026] As attached Figure 1 and attached Figure 2 As shown, the transmission mechanism 5 includes a crankshaft 22. A transmission housing 23 is provided between the first cylinder block 1 and the second cylinder block 2. The crankshaft 22 is rotatably mounted on the transmission housing 23. The transmission housing 23 has a shaft hole adapted to the crankshaft 22, allowing a bearing to be installed within the shaft hole to cooperate with the crankshaft 22 and reduce friction. A first cam 24 and a second cam 25 are respectively located on the crankshaft 22 at positions corresponding to the interior of the transmission housing 23. The first cam 24 and the second cam 25 have opposite protrusions, and the first cam 24 and the second cam 25 on the crankshaft 22 are respectively connected to the first valve stem 12 and the second valve stem 13. The transmission mechanism 5, composed of the crankshaft 22 and the two cams, can drive the first valve stem 12 and the second valve stem 13 to move in opposite directions, thereby opening and closing the corresponding inlet and outlet, and thus switching the fluid flow direction.

[0027] The transmission between the first cam 24 on the crankshaft 22 and the first valve stem 12 can be achieved by setting a connecting rod, with both ends of the connecting rod hinged to the first cam 24 and the first valve stem 12 respectively, similar to the principle of the crankshaft 22 driving the piston rod in the prior art, to realize the transmission between the first cam 24 and the first valve stem 12; alternatively, a guide rod can be set, with a guide hole through the middle of the first valve stem 12, and the guide rod can slide vertically through the guide hole. One end of the guide rod is rotatably connected to the protruding end of the first cam 24. When the first cam 24 rotates, it drives the guide rod to translate, so that the guide rod pushes the first valve stem 12 to move. The transmission between the second cam 25 and the second valve stem 13 is the same.

[0028] The drive device can be an electric motor, a rotary cylinder, or a rotary hydraulic cylinder. The appropriate drive device can be selected based on the working conditions and design requirements, offering a wider range of choices.

[0029] Furthermore, the number of the first cutting-off assembly 6 and the second cutting-off assembly 7 is at least one set, the number of the first diverting flow inlet 8 and the second diverting flow inlet 9 is equivalent to the number of the first cutting-off assembly 6, and the number of the first diverting flow outlet 10 and the second diverting flow outlet 11 is equivalent to the number of the second cutting-off assembly 7. This design can realize fluid transfer and flow direction switching between two tanks 26 or more tanks 26.

[0030] Example 2: As shown in the attached document Figure 3 The multiphase flow mixing device shown includes the directional valve assembly from Embodiment 1 and two tanks 26. One tank 26 is connected to the first directional flow inlet 8 and the second directional flow outlet 11 via two pipelines, and the other tank 26 is connected to the second directional flow inlet 9 and the first directional flow outlet 10 via two pipelines. This multiphase flow mixing device uses the directional valve assembly to switch the fluid transport direction, resulting in a simpler and more reliable structure, effectively reducing costs and increasing durability.

[0031] In addition, the aforementioned drive device can be a servo motor, the motor shaft of which is connected to the crankshaft 22 via a coupling. The aforementioned pump 3 can be a centrifugal pump 3. Both the servo motor and the centrifugal pump 3 are electrically connected to the PLC controller via wires, and the PLC controller controls the operation of the servo motor and the centrifugal pump 3.

[0032] Working principle: The PLC controller controls the servo motor and centrifugal pump 3. When the servo motor drives the crankshaft 22 to rotate, the first cam 24 and the second cam 25 on the crankshaft 22 respectively drive the first valve stem 12 and the second valve stem 13 to move. The first valve stem 12 and the second valve stem 13 move in opposite directions until the first outlet valve core 19 on the first valve stem 12 presses against the first outlet valve seat 16, while the first inlet valve core 18 on the second valve stem 13 presses against the second inlet valve seat 15. At this time, the fluid enters from the first branch flow inlet 8 and exits from the second branch flow outlet 11. When it is necessary to switch the fluid flow direction, the PLC controller only needs to control the crankshaft 22 to reverse. At this time, the first valve stem 12 and the second valve stem 13 also reverse until the first inlet valve core 18 on the first valve stem 12 presses against the first inlet valve seat 14, while the second outlet valve core 21 on the second valve stem 13 presses against the second outlet valve seat 17. At this time, the fluid enters from the second branch flow inlet 9 and exits from the first branch flow outlet 10. This achieves the switching of fluid flow direction.

Claims

1. A split flow valve block, characterized by: The application relates to a pump, which comprises a first cylinder (1), a second cylinder (2), a pump (3), a driving device, a transmission mechanism (5), a first cut-off assembly (6) and a second cut-off assembly (7), the inlet and outlet of the pump (3) are communicated with the first cylinder (1) and the second cylinder (2) respectively, the first cylinder (1) is provided with a first split-flow inlet (8) and a second split-flow inlet (9), the second cylinder (2) is provided with a first split-flow outlet (10) and a second split-flow outlet (11), the first cut-off assembly (6) is used for controlling the on-off of the first split-flow inlet (8) and the first split-flow outlet (10), the second cut-off assembly (7) is used for controlling the on-off of the second split-flow inlet (9) and the second split-flow outlet (11), the driving device drives the first cut-off assembly (6) and the second cut-off assembly (7) to act through the transmission mechanism (5), when the first cut-off assembly (6) opens the first split-flow inlet (8) and closes the first split-flow outlet (10), the second cut-off assembly (7) closes the second split-flow inlet (9) and opens the second split-flow outlet (11), when the first cut-off assembly (6) closes the first split-flow inlet (8) and opens the first split-flow outlet (10), the second cut-off assembly (7) opens the second split-flow inlet (9) and closes the second split-flow outlet (11).

2. The diverter valve pack of claim 1, wherein: The first cut-off assembly (6) comprises a first valve rod (12), the second cut-off assembly (7) comprises a second valve rod (13), the two ends of the first valve rod (12) and the two ends of the second valve rod (13) respectively extend into the first cylinder (1) and the second cylinder (2), the first cylinder (1) is provided with a first inlet valve seat (14) and a second inlet valve seat (15) at positions corresponding to the inner ends of the first split-flow inlet (8) and the second split-flow inlet (9) respectively, the second cylinder (2) is provided with a first outlet valve seat (16) and a second outlet valve seat (17) at positions corresponding to the inner ends of the first split-flow outlet (10) and the second split-flow outlet (11) respectively, the two ends of the first valve rod (12) are respectively provided with a first inlet valve core (18) and a first outlet valve core (19) used for matching the first inlet valve seat (14) and the first outlet valve seat (16), the two ends of the second valve rod (13) are respectively provided with a second inlet valve core (20) and a second outlet valve core (21) used for matching the second inlet valve seat (15) and the second outlet valve seat (17).

3. The diverter valve pack of claim 2, wherein: The transmission mechanism (5) comprises a crankshaft (22), a transmission box (23) is arranged between the first cylinder (1) and the second cylinder (2), the crankshaft (22) is rotatably arranged on the transmission box (23), the crankshaft (22) is provided with a first cam (24) and a second cam (25) at positions corresponding to the inside of the transmission box (23) respectively, the first cam (24) and the second cam (25) are oppositely protruded, and the first cam (24) and the second cam (25) on the crankshaft (22) are respectively in transmission connection with the first valve rod (12) and the second valve rod (13).

4. The diverter valve pack of claim 1, wherein: The driving device is an electric motor or a rotary cylinder or a rotary oil cylinder.

5. The diverter valve pack of claim 1, wherein: The number of the first cutting assembly (6) and the second cutting assembly (7) is at least one set, the number of the first flow inlet (8) and the second flow inlet (9) is equivalent to the number of the first cutting assembly (6), and the number of the first flow outlet (10) and the second flow outlet (11) is equivalent to the number of the second cutting assembly (7).

6. A multiphase flow mixing device characterized by: The flow dividing valve group comprises two tanks (26), one of which is connected to the first flow inlet (8) and the second flow outlet (11) through two pipelines, and the other of which is connected to the second flow inlet (9) and the first flow outlet (10) through two pipelines.

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