Adjustable submersible screw pump

Abstract

The utility model discloses an adjustable submersible screw pump which comprises a driving motor, the bottom wall of the driving motor is fixedly connected with a speed reducer, the bottom wall of the speed reducer is communicated with a first shell, the outer wall of the first shell is fixedly connected with a first fixing plate, and the interior of the first shell is communicated with a second shell in a sliding mode. The outer wall of the second shell is fixedly connected with a second fixing plate, and the outer wall of the second fixing plate is fixedly connected with a connecting block. The length of the device can be adjusted according to needs, the device can flexibly adapt to oil wells of different working conditions, and the limitation that existing equipment is fixed in length is overcome. The adjusting process is stable and orderly, complex tripping operation is not needed, the cost and time are reduced, the oil extraction efficiency can be improved, and the overall benefits of oil field production are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry equipment technical field, concretely is a kind of adjustable submersible screw pump. BACKGROUND

[0002] Submersible screw pump is a kind of equipment for oilfield production, mainly by driving head, sucker rod, screw pump downhole part etc., its working principle is to drive the sucker rod by ground driving head, make the screw in bushing rotate under well, form sealed chamber, the crude oil in wellbore is lifted from well bottom to ground, with simple structure, uniform displacement, can adapt to high viscosity crude oil and other advantages.

[0003] But in practical application, the depth of oil well is different, once submersible screw pump is lowered into oil well, due to its fixed length, when the depth of oil well changes or needs to adapt to different working conditions, it cannot be conveniently length-adjusted like some other equipment, needs to be pulled out to replace the whole pump or to carry out complex downhole operation, this can increase operation cost and time, affect oil production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at: in order to solve the length of existing equipment fixed, when the depth of oil well changes or needs to adapt to different working conditions, the problem of not being able to adjust length.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of adjustable submersible screw pump, including driving motor, the bottom wall of the driving motor is fixedly connected with speed reducer, the bottom wall of the speed reducer is communicated with shell one, the outer wall of the shell one is fixedly connected with fixed plate one, the inside of the shell one is slidably communicated with shell two, the outer wall of the shell two is fixedly connected with fixed plate two, the outer wall of the fixed plate two is fixedly connected with connecting block, the outer wall of the connecting block is fixedly connected with rack, the outer wall of the shell two is fixedly connected with fixed block, one side of the fixed block is fixedly connected with connecting long plate, one end of the connecting long plate is fixedly connected with small motor, the output of the small motor is fixedly connected with gear.

[0006] As a further scheme of the utility model: the bottom wall of the fixed plate one is provided with long rod at four corners, and the bottom wall of the fixed plate one is threadedly connected with one end of the long rod through bolts.

[0007] As a further scheme of the utility model: the number of the connecting block is two and symmetrically distributed on the two sides of fixed plate two, and the number of the rack is two and respectively fixedly connected on the outer wall of the two connecting blocks.

[0008] As a further scheme of the utility model: the outer wall of the long block is rotatably connected with the connecting column through a bearing, and one end of the connecting column is fixedly connected with the outer wall of the gear.

[0009] As a further scheme of the utility model: the outer wall of the long block is rotatably connected with the connecting column through a bearing, and one end of the connecting column is fixedly connected with the outer wall of the gear.

[0010] As a further scheme of the utility model: the number of the small motors is two and they are symmetrically distributed at the two ends of the connecting long plate.

[0011] As a further scheme of the utility model: the gear is meshingly connected with the rack, and the bottom wall of the shell two is fixedly connected with a pump head.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The length can be adjusted as required, different working conditions of oil wells can be flexibly adapted, the limitation of the fixed length of the existing equipment is overcome, the adjustment process is stable and orderly, complex tripping is not needed, cost and time are reduced, oil production efficiency is improved, and the overall benefit of oilfield production is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Fig. 2 It is an exploded view of the drying tank structure in the utility model;

[0016] Fig. 3 It is a perspective view of the standpipe structure in the utility model;

[0017] Fig. 4 It is a perspective view of the rotating sleeve structure in the utility model;

[0018] In the drawing: 1, driving motor; 2, speed reducer; 3, shell one; 4, fixed plate one; 5, long rod; 6, bolt; 7, shell two; 8, fixed block; 9, connecting long plate; 10, small motor; 11, gear; 12, connecting column; 13, long block; 14, fixed plate two; 15, connecting block; 16, rack; 17, pump head. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0021] With reference to Figs. 1 to 4 In the embodiments of the present application, an adjustable submersible screw pump comprises a driving motor 1, a reducer 2 fixedly connected to the bottom wall of the driving motor 1, an outer shell one 3 communicated with the bottom wall of the reducer 2, a fixed plate one 4 fixedly connected to the outer wall of the outer shell one 3, an outer shell two 7 slidably communicated in the inner part of the outer shell one 3, the driving motor 1 provides power, the reducer 2 reduces the power and increases the torque, adapts to subsequent work, the outer shell one 3 cooperates with the outer shell two 7 to realize the length adjustment of the pump body, the fixed plate one 4 and the fixed plate two 14 are used for fixing and connecting parts, the long rod 5 plays a guiding and stabilizing role, and ensures the smooth and orderly adjustment process.

[0022] The outer wall of the shell two 7 is fixedly connected with a fixed plate two 14, the outer wall of the fixed plate two 14 is fixedly connected with a connecting block 15, the outer wall of the connecting block 15 is fixedly connected with a rack 16, the outer wall of the shell two 7 is fixedly connected with a fixed block 8, one side of the fixed block 8 is fixedly connected with a connecting long plate 9, one end of the connecting long plate 9 is fixedly connected with a small motor 10, the fixed plate two 14, the connecting block 15 and the rack 16 constitute a transmission connection structure, the power of the small motor 10 is converted into linear motion, the small motor 10 is connected with the fixed block 8 through the connecting long plate 9, the fixed block 8 is fixed on the shell two 7, when the small motor 10 operates, the gear 11 is driven to engage with the rack 16, the sliding of the shell two 7 relative to the shell one 3 is realized, so that the length of the pump body is adjusted.

[0023] The output end of the small motor 10 is fixedly connected with a gear 11, the bottom wall of the fixed plate one 4 is provided with a long rod 5 at four corners, the bottom wall of the fixed plate one 4 is threadedly connected with one end of the long rod 5 through a bolt 6, the number of the connecting block 15 is two and is symmetrically distributed on the two sides of the fixed plate two 14, the number of the rack 16 is two and is fixedly connected with the outer wall of the two connecting blocks 15 respectively, the gear 11 of the output end of the small motor 10 engages with the rack 16, the rotary motion of the motor is converted into linear motion, the length adjustment of the pump body is realized, the fixed plate one 4 is connected with the long rod 5 through the bolt 6, the long rod 5 plays a guiding and stabilizing role, the two symmetric connecting blocks 15 and the rack 16 make the stress of adjustment more uniform, and the stable and reliable adjustment process is ensured.

[0024] The outer wall of the shell two 7 is fixedly connected with a long block 13, the outer wall of the long block 13 is rotatably connected with a connecting column 12 through a bearing, one end of the connecting column 12 is fixedly connected with the outer wall of the gear 11, the shell two 7 is fixedly connected in the middle of the fixed plate two 14, the four corners of the fixed plate two 14 are slidably connected with the outer wall of the long rod 5, the long block 13 and the connecting column 12 constitute a rotary connection structure, the gear 11 is connected with the shell two 7, so that the power of the small motor 10 can be effectively transmitted to drive the shell two 7 to move, the fixed plate two 14 is slidably connected with the long rod 5, so that the shell two 7 can stably slide along the long rod 5 when the length is adjusted, and the stability of the overall structure is maintained.

[0025] The number of the small motor 10 is two and is symmetrically distributed on the two ends of the connecting long plate 9, the gear 11 is connected with the rack 16 in engagement, the bottom wall of the shell two 7 is fixedly connected with a pump head 17, the two symmetrically distributed small motors 10 make the power more balanced, the gear 11 cooperates with the rack 16 to realize length adjustment, and the pump head 17 performs crude oil extraction work after the adjustment is completed.

[0026] The utility model discloses a working principle: when adjusting submersible screw pump work, drive motor 1 starts, and its power transmission is to speed reducer 2, and speed reducer 2 carries out deceleration and increases the twist to the power to adapt subsequent work demand, when needing to adjust the length of pump, small -size motor 10 starts to work, and the output of small -size motor 10 drives gear 11 to rotate, because gear 11 is engaged with rack 16 and connects, and rack 16 is fixed on connecting block 15, and connecting block 15 is connected with fixed plate no. 2 14, and fixed plate no. 2 14 is fixed on shell no. 2 7, therefore, the rotation of gear 11 will drive rack 16 to carry out linear motion, and then make shell no. 2 7 along shell no. 1 3 slide, long rod 5 plays the guiding effect on one side, guarantees the stability of fixed plate no. 2 14 in the moving process, on the other hand, fixed plate no. 1 4 is connected with long rod 5 one end through bolt 6 and is connected with the thread, and fixed plate no. 2 14 is slidably connected with the outer wall of long rod 5 at four corners, so that the whole adjustment process is stable and orderly, after adjusting, the power that drive motor 1 is passed through speed reducer 2 transmission, through a series of connecting structures drive pump head 17 to run, to realize the function of submersible screw pump extraction of crude oil, meet the demand of pump length under different working conditions, improve oil production efficiency.

[0027] The above-mentioned is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model does not limit to this, any skilled person in the art in the technical range disclosed by the utility model according to the technical scheme and utility model concept of the utility model is equivalent to replace or change, should cover in the protection scope of the utility model.

Claims

1. An adjustable ESP screw pump comprising a drive motor (1), characterized in that: The bottom wall of the driving motor (1) is fixedly connected with a speed reducer (2), the bottom wall of the speed reducer (2) is communicated with a shell one (3), the outer wall of the shell one (3) is fixedly connected with a fixed plate one (4), the inside of the shell one (3) is slidably communicated with a shell two (7), the outer wall of the shell two (7) is fixedly connected with a fixed plate two (14), the outer wall of the fixed plate two (14) is fixedly connected with a connecting block (15), the outer wall of the connecting block (15) is fixedly connected with a rack (16), the outer wall of the shell two (7) is fixedly connected with a fixed block (8), one side of the fixed block (8) is fixedly connected with a connecting long plate (9), one end of the connecting long plate (9) is fixedly connected with a small motor (10), the output end of the small motor (10) is fixedly connected with a gear (11).

2. An adjustable ESP progressing cavity pump as defined in claim 1, wherein: The bottom wall of the fixed plate one (4) is provided with a long rod (5) at four corners, and the bottom wall of the fixed plate one (4) is threadedly connected with one end of the long rod (5) through bolts (6).

3. An adjustable ESP progressing cavity pump as defined in claim 1, wherein: The connecting block (15) is two in number and symmetrically distributed on both sides of the fixed plate two (14), and the rack (16) is two in number and fixedly connected to the outer wall of the two connecting blocks (15) respectively.

4. An adjustable ESP progressing cavity pump as defined in claim 1, wherein: The outer wall of the shell two (7) is fixedly connected with a long block (13), the outer wall of the long block (13) is rotatably connected with a connecting column (12) through a bearing, and one end of the connecting column (12) is fixedly connected with the outer wall of the gear (11).

5. An adjustable ESP progressing cavity pump as defined in claim 2, wherein: The shell two (7) is fixedly connected to the middle of the fixed plate two (14), and the four corners of the fixed plate two (14) are slidably connected with the outer wall of the long rod (5).

6. An adjustable ESP progressing cavity pump as defined in claim 5, wherein: The small motor (10) is two in number and symmetrically distributed on both ends of the connecting long plate (9).

7. An adjustable ESP progressing cavity pump as defined in claim 1, wherein: The gear (11) is meshingly connected with the rack (16), and the bottom wall of the shell two (7) is fixedly connected with a pump head (17).

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