Synchronous rotation multiphase oil-gas multiphase pump

Abstract

The utility model discloses a synchronous rotation multiphase oil-gas multiphase pump which comprises a shell, an input pipeline and an output pipeline are arranged on the shell, a rotor is eccentrically arranged in the shell in a penetrating mode, a sliding plate is longitudinally arranged at the upper end of the rotor in a sliding and sealing mode, and the sliding plate penetrates through the shell to be elastically connected with the rotor in an abutting mode. The rotor divides the interior of the shell into a low-pressure cavity and a high-pressure cavity, the low-pressure cavity and the high-pressure cavity communicate with the input pipeline and the output pipeline correspondingly, the position, located on the sliding plate, of the rotor is sleeved with a synchronous rotation sleeve, a plurality of installation cavities are symmetrically and evenly formed in the peripheral sides of the two ends of the synchronous rotation sleeve, and sealing assemblies are installed in the installation cavities. The pump-out pressure and efficiency of the device are increased; the two ends of the sliding plate are fixedly provided with sealing guide blocks corresponding to the sealing assemblies, and the sealing guide blocks are in relative rotation sealing fit with the synchronous rotary sleeve; a gland is arranged at the upper end of the shell, and an adjusting mechanism is arranged on the gland and used for adjusting the fit clearance between the sliding plate and the synchronous rotary sleeve and the fit clearance between the sealing guide block and the synchronous rotary sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of power machinery, in particular to a synchronous rotary multiphase oil-gas mixing and transporting pump. Background Art

[0002] In the prior art, most multiphase oil-gas mixing and transporting devices use an eccentric rotor to dynamically divide the interior of the housing into different cavities to achieve the purpose of regulating the pressure and flow rate at the input and output ends. However, during the rotation of the rotor, it is always in line contact with the inner wall of the housing. As the usage time increases, friction occurs between the rotor and the inner wall of the housing, causing the gap between the two to gradually increase. This may lead to the backflow of the medium in the high-pressure cavity and the inability to precisely regulate the pressure of the output medium. At the same time, when the medium is relatively viscous, the pumping pressure and efficiency of the medium will also be affected.

[0003] Therefore, it is necessary to provide a synchronous rotary multiphase oil-gas mixing and transporting pump to solve the problems mentioned in the above background art. Summary of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: A synchronous rotary multiphase oil-gas mixing and transporting pump, comprising: a housing, an input pipeline and an output pipeline are arranged on the housing, a rotor is eccentrically arranged through the housing, a slide plate is longitudinally and slidably sealed at the upper end of the rotor, the slide plate penetrates through the housing and elastically abuts against the rotor, the slide plate divides the interior of the housing into a low-pressure cavity and a high-pressure cavity, the low-pressure cavity and the high-pressure cavity are respectively communicated with the input pipeline and the output pipeline, a synchronous rotary sleeve is sleeved on the rotor at the position of the slide plate, a plurality of installation cavities are symmetrically and evenly arranged on the outer peripheral sides at both ends of the synchronous rotary sleeve, a sealing component is installed in the installation cavity, and the sealing component elastically abuts against the inner wall of the housing to increase the pumping pressure and efficiency of the synchronous rotary multiphase oil-gas mixing and transporting pump;

[0005] Sealing guide blocks are fixedly arranged at both ends of the slide plate corresponding to the sealing component, and the synchronous rotary sleeve is rotationally and sealingly matched with the sealing guide blocks relatively;

[0006] A gland is arranged at the upper end of the housing, and an adjusting mechanism is arranged on the gland, and the adjusting mechanism is used to adjust the clearance between the slide plate and the sealing guide block and the synchronous rotary sleeve.

[0007] As a preferred technical solution of the utility model, a sliding cavity is longitudinally arranged at the lower end of the slide plate, a partition plate is slidably sealed at the lower end of the sliding cavity, and the upper end of the partition plate is elastically connected with the top of the sliding cavity through a plurality of first springs;

[0008] A limiting ring groove is formed in the middle of the outer side of the synchronous rotating sleeve. The partition plate is inserted into the limiting ring groove and is in relative rotational cooperation with the partition plate. The partition plate is adapted to the specifications of the limiting ring groove.

[0009] As a preferred technical solution of the present utility model, the sealing assembly includes:

[0010] An arc plate is rotatably arranged in the installation cavity. One end of the arc plate extends out of the installation cavity and elastically abuts against the inner wall of the housing. The arc plate has the same width as the sealing guide block. The inner arc surface of the arc plate faces the same direction as the rotation direction of the rotor. An expansion rod is arranged between the inner arc surface of the arc plate and the bottom of the installation cavity. Two ends of the expansion rod are respectively hinged to the arc plate and the installation cavity.

[0011] A second spring is sleeved outside the expansion rod. The second spring is elastically supported between the bottom of the installation cavity and the inner arc surface of the arc plate. When the outer arc surface of the arc plate is pressed, the arc plate can completely enter the installation cavity.

[0012] As a preferred technical solution of the present utility model, a liquid outlet groove is formed in the arc plate. The liquid outlet groove is located at one end of the arc plate facing the inner wall of the housing. The liquid outlet groove is uniformly arranged along the extending direction of the arc width of the arc plate.

[0013] As a preferred technical solution of the present utility model, guiding structures are arranged at both ends in the length direction of the sealing guide block and at the contact end between the input pipeline and the sealing assembly.

[0014] As a preferred technical solution of the present utility model, a first flange and a second flange are respectively arranged at both ends of the housing. A sealing end cover is arranged at the outer end of the first flange, and a gasket is arranged at the outer end of the second flange.

[0015] As a preferred technical solution of the present utility model, an elastic coupling is arranged on one side of the input end of the second flange. The elastic coupling is connected to the output shaft of the motor.

[0016] Compared with the prior art, the present utility model provides a synchronous rotating multiphase oil-gas mixed transportation pump, which has the following beneficial effects:

[0017] 1. In the present utility model, by setting the sealing assembly to always ensure line contact with the inner wall of the housing, the transportation efficiency of the medium between the input pipeline and the output pipeline is ensured. By setting the arc plate and the installation cavity, the input amount of the medium in the low-pressure cavity is increased. At the same time, the arc plate passively extrudes the medium flowing through the high-pressure cavity, so that the upper limit of the output pressure of the device is higher, and the transportation effect of viscous media is improved more significantly.

[0018] 2. In the present utility model, by providing an adjustment mechanism, the abutting pressure between the sliding plate and the synchronous rotating sleeve is precisely controlled to ensure the sealing effect.

[0019] 3. In the present utility model, the synchronous rotating multiphase oil-gas mixed transportation pump has dual characteristics of a positive displacement pump and a compressor, and is applicable to working environments with multiphase mixed transportation of media including gas phase, liquid phase, solid phase, etc.; applicable to working environments with high-viscosity liquid transportation; applicable to working environments with high acid-base-salt transportation; applicable to working environments with high pressure differences, and has a wide range of application industries, such as: gas-liquid mixed transportation in medical machinery, oil-gas mixed transportation in oil fields, gas-liquid mixed transportation in gas field water drainage and gas production, gas-liquid mixed transportation of chemical raw materials pumps, gas-liquid mixed transportation in food machinery, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic front sectional view of a synchronous rotating multiphase oil-gas mixed transportation pump;

[0021] Figure 2 is Figure 1 the schematic sectional view taken along line a-a in

[0022] Figure 3 is Figure 1 the schematic sectional view taken along line b-b in

[0023] Figure 4 is Figure 3 the enlarged schematic view at position A in

[0024] In the figures: 1. Housing; 2. Rotor; 3. gland; 4. Sliding plate; 5. First flange; 6. Second flange; 7. Gasket; 8. Elastic coupling; 9. Sealing end cover; 10. Input pipeline; 11. Output pipeline; 12. Sealing guide block; 21. Synchronous rotating sleeve; 22. Sealing assembly; 31. Adjusting bolt; 41. Sliding cavity; 42. Partition plate; 43. First spring; 211. Installation cavity; 221. Arc plate; 222. Telescopic rod; 223. Second spring; 224. Liquid outlet groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Please refer to Figures 1-4, the present utility model provides a synchronous rotary multiphase oil-gas mixed transportation pump, which includes a housing 1. An input pipeline 10 and an output pipeline 11 are arranged on the housing 1. A rotor 2 is eccentrically penetrated through the housing 1. A slide plate 4 is longitudinally slidably sealed at the upper end of the rotor 2. The slide plate 4 penetrates through the housing 1 and elastically abuts against the rotor 2. The rotor 2 divides the interior of the housing 1 into a low-pressure chamber and a high-pressure chamber. The low-pressure chamber and the high-pressure chamber are respectively communicated with the input pipeline 10 and the output pipeline 11. A synchronous rotary sleeve 21 is sleeved on the rotor 2 at the position of the slide plate 4. A plurality of installation cavities 211 are symmetrically and uniformly formed on the outer peripheral sides at both ends of the synchronous rotary sleeve 21. A sealing assembly 22 is installed in the installation cavity 211. The sealing assembly 22 elastically abuts against the inner wall of the housing 1 to increase the pumping pressure and efficiency of the synchronous rotary multiphase oil-gas mixed transportation pump;

[0026] Sealing guide blocks 12 are fixedly arranged at both ends of the slide plate 4 corresponding to the sealing assembly 22. The synchronous rotary sleeve 21 is in relative rotational sealing cooperation with the sealing guide blocks 12;

[0027] A gland 3 is arranged at the upper end of the housing 1. An adjusting mechanism is arranged on the gland 3. The adjusting mechanism is used to adjust the clearance between the slide plate 4 and the sealing guide blocks 12 and the synchronous rotary sleeve 21.

[0028] It should be explained that the synchronous rotary multiphase oil-gas mixed transportation pump has the dual characteristics of a positive displacement pump and a compressor, and is suitable for working conditions where the transported medium includes multiphase mixed transportation such as gas phase, liquid phase, and solid phase; it is suitable for working conditions with high-viscosity liquid transportation; it is suitable for working conditions with high acid-base-salt transportation; it is suitable for working conditions with high pressure difference, and is widely used in industries such as medical machinery gas-liquid mixed transportation, oilfield oil-gas mixed transportation, gas field drainage and gas production mixed transportation, chemical raw material gas-liquid mixed transportation pump, food machinery gas-liquid mixed transportation, etc.

[0029] During specific operation, the interior of the housing 1 is divided into a high-pressure chamber and a low-pressure chamber by the eccentric rotor 2. Then, the rotation of the eccentric rotor 2 drives the sealing assembly 22 on the synchronous rotary sleeve 21 to rotate. During this process, the volume inside the housing 1 continuously changes. The volume change trend of the low-pressure chamber is from zero to large, while the change trend of the high-pressure chamber is from large to zero and then to large. The rotation of the rotor 2 and the sealing assembly 22 drives the medium to experience the volume change inside the housing 1 to achieve the adjustment of the output pressure of the medium.

[0030] Among them, by elastically abutting the slide plate 4 against the synchronous rotary sleeve 21, the input pipeline 10 and the output pipeline 11 are sealed off, so that the medium can only flow through the high-pressure chamber and the low-pressure chamber, which is convenient for adjusting the output pressure of the medium.

[0031] Specifically, the adjusting mechanism is an adjusting bolt 31, and the adjusting bolt 31 is screwed and adjusted by a torque wrench to precisely control the abutting pressure between the sliding plate 4 and the synchronous rotating sleeve 21, ensuring the sealing effect and preventing the medium from flowing through this location, which may affect the adjustment accuracy of the medium output pressure by the housing 1.

[0032] Furthermore, as Figure 2 shown, a sliding cavity 41 is longitudinally formed at the lower end of the sliding plate 4, and a partition plate 42 is slidably and sealingly arranged at the lower end of the sliding cavity 41. The upper end of the partition plate 42 is elastically connected to the top of the sliding cavity 41 by a plurality of first springs 43;

[0033] A limiting ring groove is formed in the middle of the outer side of the synchronous rotating sleeve 21, and the partition plate 42 is inserted into the limiting ring groove and is in relative rotational fit with the partition plate 42. The partition plate 42 is adapted to the specifications of the limiting ring groove.

[0034] Specifically, when the lower end of the sliding plate 4 is worn after long-term operation, the abutting pressure between the sliding plate 4 and the synchronous rotating sleeve 21 can be adjusted through the adjusting mechanism to ensure the adjustment accuracy of the medium output pressure by the housing 1. At the same time, the setting of the limiting ring groove prevents the rotor 2 from moving axially.

[0035] Furthermore, as Figure 3 and 4 shown, the sealing assembly 22 includes:

[0036] An arc plate 221, which is rotatably arranged in the installation cavity 211. One end of the arc plate 221 extends out of the installation cavity 211 and elastically abuts against the inner wall of the housing 1; the arc plate 221 has the same width as the sealing guide block 12. The inner arc surface of the arc plate 221 faces the same direction as the rotation direction of the rotor 2. An expansion rod 222 is arranged between the inner arc surface of the arc plate 221 and the bottom of the installation cavity 211. The two ends of the expansion rod 222 are respectively hinged to the arc plate 221 and the installation cavity 211;

[0037] A second spring 223 is sleeved outside the expansion rod 222. The second spring 223 is elastically supported between the bottom of the installation cavity 211 and the inner arc surface of the arc plate 221. When the outer arc surface of the arc plate 221 is pressed, the arc plate 221 can completely enter the installation cavity 211.

[0038] Furthermore, as Figure 4 shown, a liquid outlet groove 224 is formed on the arc plate 221. The liquid outlet groove 224 is located at one end of the arc plate 221 facing the inner wall of the housing 1, and the liquid outlet groove 224 is uniformly formed along the extending direction of the arc width of the arc plate 221.

[0039] Furthermore, as Figure 2 and3 As shown, guiding structures are provided at both ends of the sealing guiding block 12 in the length direction, and at the contact ends of the input pipe 10 and the sealing assembly 22.

[0040] Specifically, the guiding structure is a chamfer or a fillet.

[0041] It should be explained that when the sealing assembly 22 rotates, under the elastic support of the second spring 223, it can always maintain line contact with the inner wall of the housing 1, ensuring the conveying efficiency of the medium between the input pipe 10 and the output pipe 11. At the same time, the arc plate 221 is guided by the guiding structure to ensure that the arc plate 221 can avoid corresponding structures by compressing the second spring 223 during the rotation process. In addition, the arc plate 221 and the installation cavity 211 can increase the input amount of the medium on the low-pressure chamber side. When the arc plate 221 drives the medium to flow towards the high-pressure chamber, as the volume of the housing 1 becomes smaller, the inner wall of the housing 1 squeezes the arc plate 221, and the medium on the inner arc surface side of the installation cavity 211 and the arc plate 221 is unidirectionally discharged towards the output end of the high-pressure chamber. The pumping pressure of the device has a higher pressure limit compared to conventional equipment, and when applied to viscous media, the conveying efficiency is improved more significantly.

[0042] Furthermore, as Figure 1 shown, a first flange 5 and a second flange 6 are respectively provided at both ends of the housing 1. A sealing end cover 9 is provided at the outer end of the first flange 5, and a gasket 7 is provided at the outer end of the second flange 6.

[0043] Wherein, the rotor 2 is rotatably connected to the housing 1, the first flange 5, and the second flange 6 through a plurality of bearings.

[0044] An elastic coupling 8 is provided on one side of the input end of the second flange 6, and the elastic coupling 8 is connected to the output shaft of the motor.

[0045] During specific implementation, the eccentric rotor is driven to rotate by the motor. The rotor drives the medium in the input pipe to adjust the pressure through the low-pressure chamber - high-pressure chamber, and then discharges it through the output pipe to complete the adjustment of the pumped medium pressure. Among them, the medium is pushed by the sealing assembly always in line contact with the inner wall of the housing, and the medium in front of its rotation direction is squeezed and discharged in cooperation with the inner wall of the housing, so that the upper limit of the output pressure adjustment of the device for the medium is higher and the applicability is stronger.

[0046] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A synchronous rotary multiphase oil-gas mixed pump, comprising a housing (1), the housing (1) being provided with an input pipe (10) and an output pipe (11), the housing (1) being eccentrically penetrated by a rotor (2), the upper end of the rotor (2) being longitudinally slidably sealed with a slide plate (4), the slide plate (4) penetrating the housing (1) and elastically abutting against the rotor (2), the rotor (2) dividing the interior of the housing (1) into a low-pressure chamber and a high-pressure chamber, the low-pressure chamber and the high-pressure chamber being communicated with the input pipe (10) and the output pipe (11) respectively, the rotor (2) being provided with a synchronous rotary sleeve (21) at the slide plate (4), characterized in that: A plurality of installation cavities (211) are symmetrically and evenly formed on the outer circumference of both ends of the synchronous rotary sleeve (21), and a sealing assembly (22) is installed in the installation cavity (211). The sealing assembly (22) elastically abuts against the inner wall of the housing (1) to increase the pumping pressure and efficiency of the synchronous rotary multiphase oil-gas mixed pump; Sealing guide blocks (12) are fixedly provided at both ends of the slide plate (4) corresponding to the sealing assembly (22), and the synchronous rotating sleeve (21) and the sealing guide block (12) are in relative rotation and sealing cooperation; A pressure cover (3) is provided at the upper end of the housing (1), and an adjustment mechanism is provided on the pressure cover (3). The adjustment mechanism is used to adjust the matching clearance between the slide plate (4) and the sealing guide block (12) and the synchronous rotating sleeve (21).

2. A synchronous rotary multiphase oil-gas mixed transport pump according to claim 1, characterized in that: A sliding cavity (41) is longitudinally provided at the lower end of the slide plate (4), a partition plate (42) is slidingly and sealingly provided at the lower end of the sliding cavity (41), and an upper end of the partition plate (42) is elastically connected to the top of the sliding cavity (41) via a plurality of first springs (43); A limiting ring groove is provided in the middle of the outer side of the synchronous rotating sleeve (21), the partition plate (42) is inserted into the limiting ring groove and relatively rotates with the partition plate (42), and the specifications of the partition plate (42) and the limiting ring groove are adapted.

3. The synchronous rotary multiphase oil-gas mixed flow pump according to claim 1, characterized in that: The sealing assembly (22) comprises: an arc plate (221), the arc plate (221) being rotatably disposed in the installation cavity (211), one end of the arc plate (221) extending out of the installation cavity (211) and elastically abutting against the inner wall of the housing (1); the arc plate (221) and the sealing guide block (12) have the same width, the inner arc surface of the arc plate (221) is oriented in the same direction as the rotation direction of the rotor (2), a telescopic rod (222) is disposed between the inner arc surface of the arc plate (221) and the bottom of the installation cavity (211), and two ends of the telescopic rod (222) are respectively hinged to the arc plate (221) and the installation cavity (211); A second spring (223) is sleeved on the outer side of the telescopic rod (222), and the second spring (223) is elastically supported between the bottom of the installation cavity (211) and the inner arc surface of the arc plate (221), and when the outer arc surface of the arc plate (221) is under pressure, the arc plate (221) can completely enter the installation cavity (211).

4. The synchronous rotary multiphase oil-gas mixed flow pump according to claim 3, characterized in that: The arc plate (221) is provided with a liquid outlet groove (224), the liquid outlet groove (224) is located at one end of the arc plate (221) facing the inner wall of the shell (1), and the liquid outlet groove (224) is evenly provided along the extension direction of the arc surface width of the arc plate (221).

5. The synchronous rotary multiphase oil-gas mixed transport pump according to claim 3, characterized in that: Both ends of the sealing guide block (12) in the length direction and the contact end between the input pipe (10) and the sealing assembly (22) are provided with guide structures.

6. The synchronous rotary multiphase oil-gas mixed flow pump according to claim 1, characterized in that: The two ends of the shell (1) are respectively provided with a first flange (5) and a second flange (6); the outer end of the first flange (5) is provided with a sealing end cover (9), and the outer end of the second flange (6) is provided with a gasket (7).

7. The synchronous rotary multiphase oil-gas mixed flow pump according to claim 6, characterized in that: An elastic coupling (8) is provided on one side of the input end of the second flange (6), and the elastic coupling (8) is connected to the output shaft of the motor.

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