CN218913073U - Multi-power driving slurry pump for petroleum engineering - Google Patents

Abstract

The utility model discloses a multi-power driving slurry pump for petroleum engineering, which comprises a base, wherein a pump hydraulic end group and a plurality of medium-high speed motors are arranged on the base in an arrayed manner, the telescopic end of the pump hydraulic end group is connected to a crankshaft, the end part of the crankshaft is connected to an output port of a reduction gearbox through a coupling, the reduction gearbox is arranged on the side of the base, and the input end of the reduction gearbox is connected with the plurality of medium-high speed motors; the plurality of medium-high speed motors drive the crankshafts after being decelerated by the reduction gearbox, and then drive the hydraulic ends of the pumps to run; the plurality of middle-high speed motors are mechanically coupled and decelerated through the planetary reduction gearbox to drive the crankshaft of the slurry pump, and then the hydraulic end is driven to run; the planetary gear transmission structure is adopted to replace the traditional medium-low speed motor by utilizing a plurality of medium-high speed motors, and the planetary gear transmission structure has the advantages of large reduction ratio, compact structure, light weight, low acquisition cost, high running efficiency, low transportation cost and easy maintenance.

Description

Multi-power driving slurry pump for petroleum engineering

Technical Field

The utility model relates to the technical field of petroleum engineering equipment, in particular to a multi-power driving slurry pump for petroleum engineering.

Background

At present, 1 or 2 high-power, medium and low-speed motors are generally adopted for the electrically driven slurry pump in the domestic petroleum engineering, the input gear shaft of the slurry pump is driven after the speed is reduced through the belt pulley, then the interior of the slurry pump is reduced through the engagement of the input gear shaft and a large gear ring on a crankshaft, and then the hydraulic end is driven to realize the operation of the slurry pump. The defects of the above configuration are that the electric drive slurry pump has large volume, heavy weight, high cost of the medium-low speed motor, low belt transmission efficiency, inconvenient overall transportation, high cost of spare parts, difficult maintenance, high manufacturing process difficulty of the crankshaft and the like.

Disclosure of Invention

The utility model aims to provide a multi-power driving slurry pump for petroleum engineering, which is characterized in that a plurality of medium-high speed motors are mechanically coupled and decelerated through a planetary reduction gearbox to drive a slurry pump crankshaft and then drive a hydraulic end to run; the planetary gear transmission structure is adopted to replace the traditional medium-low speed motor by utilizing a plurality of medium-high speed motors, and the planetary gear transmission structure has the advantages of large reduction ratio, compact structure, light weight, low acquisition cost, high running efficiency, low transportation cost and easy maintenance.

The utility model adopts the technical scheme that:

the utility model provides a multi-power drive slush pump for petroleum engineering, includes the base, is equipped with pump fluid end group and many medium-high speed motors on the base in order, and pump fluid end group's flexible end is connected to the bent axle, and the tip of bent axle passes through the output port of coupling joint to the reducing gear box, and the reducing gear box is located the avris of base, and the input of reducing gear box connects many medium-high speed motors; the plurality of medium-high speed motors drive the crankshaft after being decelerated by the reduction gearbox, and then drive the pump hydraulic end to run.

When the reduction gearbox adopts one, the reduction gearbox is arranged on one side of the rear part of the base, at least 2 medium-high speed motors are matched and arranged on the plurality of medium-high speed motors, the plurality of medium-high speed motors are arranged on the lower half part of the base, and output shafts of the plurality of medium-high speed motors are connected to the input end of the reduction gearbox through a coupling.

When the reduction gearbox adopts two, two reduction gearboxes are located the left and right sides at base rear portion respectively, and many medium-high speed motors match and are equipped with 4 at least, and many medium-high speed motors locate the lower half of base, and many medium-high speed motors evenly distribute into two sets of, and the output shaft of every group is connected to the input of corresponding reduction gearbox respectively through the shaft coupling.

The reduction gearbox comprises a gearbox body, wherein a power input area and a reduction output area are arranged in the gearbox body from bottom to top, an input gear shaft group is arranged in the power input area, the power driving end of each input gear shaft in the input gear shaft group extends out of the gearbox body and is connected with an output shaft of a medium-high speed motor through a coupling, the power output wheels of the input gear shafts are meshed and connected with a main power input wheel, the input gear shaft group is distributed around the circumference of the main power input wheel, and the main power input wheel is connected with a secondary power input wheel through a primary bearing shaft; the speed reduction output area in be equipped with main drive output wheel, main drive output wheel meshing connection secondary power input wheel, main drive output wheel passes through the secondary and holds the pivot linkage sun gear, sun gear meshing connection planetary gear subassembly to it is fixed with the box through planetary gear subassembly, planetary gear subassembly's center is fixed with the bent axle butt joint axle, bent axle butt joint axle stretches out outside the box and passes through the shaft coupling and dock with the bent axle tip.

The planetary gear assembly comprises a planetary gear set, a planetary carrier and a planetary gear set external gear ring, the planetary gear set is in meshed connection with a sun gear, the planetary carrier is covered between the planetary gear sets, a crankshaft butt-joint shaft is arranged at the center of the end face of the planetary carrier, peripheral gears of the planetary gear set are in meshed connection with the planetary gear set external gear ring, and the planetary gear set external gear ring is fixed with the inner wall of the box body.

The reduction gearbox further comprises a middle transmission area, the middle transmission area is arranged between the power input area and the reduction output area, a middle bearing shaft and an idler wheel are arranged in the middle transmission area, the primary bearing shaft, the middle bearing shaft and the secondary bearing shaft are arranged in parallel from bottom to top, the idler wheel is arranged on the middle bearing shaft, and the idler wheel is in meshed connection with the secondary power input wheel and the main transmission output wheel.

The utility model has the following advantages:

1) The slurry pump has no traditional input gear shaft and crankshaft big gear ring, the pump body structure is greatly simplified, the volume is small, and the weight is light;

2) The multiple medium-high speed low-power motors are adopted, so that the cost is low, the weight is light, the maintenance is easy, the purchasing cost and the maintenance cost of the driving device of the working machine are reduced, and the maintenance time is shortened.

3) The planetary gear is adopted for transmission, so that the structure is compact, the size is small, the weight is light, the transmission ratio is large, the efficiency is high, the transmission is balanced, and the shock resistance is high;

4) The whole set of electric slurry pump has small size and light weight, does not need to be disassembled and assembled, and is integrally loaded and transported.

5) For the slurry pumps with different specifications, motors with the same type and different numbers are adopted to be matched with the slurry pumps, so that the slurry pump has the advantages of good universality, low motor power and low price, and the cost of spare parts is obviously reduced.

6) When a motor fails, redundancy is achieved with reduced power operation (one off-stream).

Drawings

FIG. 1 is a front view of a first embodiment of the present utility model;

FIG. 2 is a side view of a first embodiment of the utility model;

FIG. 3 is a cross-sectional view of a first embodiment of the utility model;

fig. 4 is a front view of a second embodiment of the present utility model;

FIG. 5 is a side view of a second embodiment of the present utility model;

fig. 6 is a cross-sectional view of a motor distribution according to a second embodiment of the present utility model;

fig. 7 is a schematic diagram of a motor distribution diagram according to a second embodiment of the present utility model.

Base 1, pump fluid end 2, crankshaft 3, multiple medium-high speed motors 4, reduction box 5, input gear shaft 51, main power input wheel 52, primary bearing shaft 53, secondary power input wheel 54, middle bearing shaft 55, idler 56, main transmission output wheel 57, secondary bearing shaft 58, sun gear 59, box 510, crankshaft butt-joint shaft 511, planetary gear set 512, planetary gear carrier 513, planetary gear set external gear ring 514.

Detailed Description

As shown in fig. 1, the utility model comprises a base 1, a plurality of medium-high speed motors 4, a reduction gearbox 5, a crankshaft 3 and a pump hydraulic end 2, wherein the plurality of medium-high speed motors 4, the reduction gearbox 5, the crankshaft 3 and the pump hydraulic end 2 are arranged on the base 1, are integrally connected and fixed with the base 1, and are integrally installed into a pry.

The utility model arranges the pump fluid end 2 group and the plurality of medium-high speed motors 4 on the base 1, wherein the plurality of medium-high speed motors 4 adopt the low-power medium-high speed motors 4 (such as the rail-level high-speed permanent magnet synchronous motor 4) as power sources, and has high efficiency, high annual output, convenient purchase and replacement and low cost. Therefore, the input shaft, the gear pair and the crankshaft gear ring of the existing slurry pump are replaced and removed, the structural design of the slurry pump is simplified, and the volume and the weight of the pump body are greatly reduced. The high-power motor can be produced in China at present, but the total demand of each type for one year is only calculated by thousands, the high price is realized due to small yield, and when faults occur, the component allocation speed is low and the maintenance cost is high; on the other hand, the existing slurry pump adopts a structure that the input gear shaft 51 is meshed with a large gear ring on a crankshaft, the crankshaft is complex in process and high in maintenance difficulty, and meanwhile, the slurry pump is large in size and heavy in weight.

Secondly, connecting the telescopic ends of the pump hydraulic end 2 groups to a crankshaft 3, wherein the crankshaft 3 is provided with an eccentric wheel, and directly driving the slurry pump hydraulic end 2 to work through a telescopic connecting rod; the end part of the crankshaft 3 is connected to an output port of a reduction gearbox 5 through a coupler (the connecting structure type can be a coupler, a spline shaft or an expansion sleeve connection), the reduction gearbox 5 is arranged on the side of the base 1, and the input end of the reduction gearbox 5 is connected with a plurality of medium-high speed motors 4; the plurality of medium-high speed motors 4 drive the crankshaft 3 after being decelerated by the reduction gearbox 5, and then drive the pump fluid end 2 to run.

When the reduction gearbox 5 adopts one, the reduction gearbox 5 is arranged on one side of the lower part of the base 1, at least 2 middle-high speed motors 4 are matched and arranged, when the plurality of middle-high speed motors 4 are provided with 2-5 motors, each motor is circumferentially distributed along the main power input wheel 52, the plurality of middle-high speed motors 4 are arranged on the rear half part of the base 1, and the output shafts of the plurality of middle-high speed motors 4 are connected to the input end of the reduction gearbox 5 through a coupling (the connecting structure type can be a coupling, a spline shaft or an expansion sleeve).

When two reduction boxes 5 are adopted, the two reduction boxes 5 are respectively arranged on the left side and the right side of the rear part of the base 1, at least 4 middle-high speed motors 4 are matched and arranged, when 2-5 middle-high speed motors 4 of each group are arranged, each motor is distributed along the circumference of the main power input wheel 52, the middle-high speed motors 4 of the plurality are evenly distributed into two groups, and the output shafts of each group are respectively connected to the input ends of the corresponding reduction boxes 5 through couplings (the connection structure type can be the coupling, spline shafts or expansion sleeves).

The reduction gearbox 5 comprises a box body 510, wherein a power input area A, a middle transmission area B and a reduction output area C are arranged in the box body 510 from bottom to top, an input gear shaft 51 group is arranged in the power input area A, the power driving end of each input gear shaft 51 in the input gear shaft 51 group extends out of the box body 510 and is connected with an output shaft of a medium-high speed motor 4 through a coupler, the power output wheels of the input gear shafts 51 are meshed and connected with a main power input wheel 52, the input gear shaft 51 group is circumferentially distributed around the main power input wheel 52 and realizes mechanical coupling transmission through gear meshing, and the main power input wheel 52 is connected with a secondary power input wheel 54 through a primary bearing shaft 53.

The intermediate transmission area B is arranged between the power input area A and the speed reduction output area C, an intermediate bearing shaft 55 and an idler pulley 56 are arranged in the intermediate transmission area B, a primary bearing shaft 53, the intermediate bearing shaft 55 and a secondary bearing shaft 58 are arranged in parallel from bottom to top, idler pulleys 56 are arranged on the intermediate bearing shaft 55, and the idler pulleys 56 are in meshed connection with the secondary power input wheel 54 and the main transmission output wheel 57.

The speed reduction output area C is internally provided with a main transmission output wheel 57, the main transmission output wheel 57 is in meshed connection with a secondary power input wheel 54, the main transmission output wheel 57 is in linkage with a sun wheel 59 through a secondary bearing shaft 58, the sun wheel 59 is in meshed connection with a planetary gear assembly and is fixed with a box 510 through the planetary gear assembly, the center of the planetary gear assembly is fixed with a crankshaft butt joint shaft 511, and the crankshaft butt joint shaft 511 extends out of the box 510 to be in butt joint with the end part of a crankshaft 3 through a coupling.

The planetary gear assembly comprises a planetary gear set 512, a planetary gear carrier 513 and a planetary gear set external gear ring 514, the planetary gear set 512 is meshed with a sun gear 59, the sun gear 59 is used as a driving wheel of the planetary gear set to rotate, the planetary gear carrier 513 is covered between the planetary gear sets 512, a crankshaft butt-joint shaft 511 is arranged in the center of the end face of the planetary gear carrier 513, the planetary gear carrier 513 is used as the crankshaft butt-joint shaft 511 to be connected with a mud pump crankshaft 3, peripheral gears of the planetary gear set 512 are meshed with the planetary gear set external gear ring 514, the planetary gear set external gear ring 514 is fixed with the inner wall of the box 510, and the planetary gear set external gear ring 514 is used as a machine member for fixing and supporting the planetary gear set 512.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model adopts a plurality of low-power medium-high speed motors 4 as power sources, which are respectively connected with the power driving end of each input gear shaft 51 in the input gear shaft 51 group of the reduction gearbox 5, and the plurality of input gear shafts 51 are mechanically coupled through the main power input wheel 52 to realize one-time reduction; the secondary power input wheel 54 drives the main transmission output wheel 57 through gear engagement to realize secondary deceleration; the main transmission output wheel 57 and the sun wheel 59 operate, and the planetary gear set 512 and the outer gear ring drive the planetary wheel carrier 513 to operate, so that third speed reduction is realized; the planet carrier 513 is connected as an output shaft to the mud pump crankshaft, which in turn drives the mud pump fluid end 2 into operation. The device can realize the mechanical coupling driving of a plurality of medium-high speed motors 4, realize a larger reduction ratio and provide the required rotating speed and torque for the slurry pump, and meet the working condition requirements of petroleum engineering.

Example 1

As shown in fig. 1, 2 and 3, when one reduction gearbox 5 is adopted in the device, the reduction gearbox 5 is arranged on the right side of the rear part of the base 1, at least 3 middle-high speed motors 4 are matched and arranged, and all motors are distributed along the circumference of the main power input wheel 52; the 3 middle high-speed motors 4 are arranged at the rear half part of the base 1, the output shafts of the 3 middle high-speed motors 4 are connected to the input end of the reduction gearbox 5 through a coupler (the connecting structure type can be a coupler, a spline shaft or an expansion sleeve), and the output shafts of the 3 middle high-speed motors 4 are circumferentially distributed around the main power input wheel 52 and realize mechanical coupling transmission through gear engagement. In addition, the intermediate transmission area B is not provided in the reduction gearbox 5 of the present embodiment. Thereby reducing the overall weight and volume of the reduction gearbox 5 so that the space is compressed and more compact.

Firstly, the high-speed motor 4 in 3 sets is started, power is transmitted to each input gear shaft 51 correspondingly connected through an output shaft, the input gear shafts 51 are integrally formed by adopting an integrated design, the processing is convenient, the installation is convenient, each input gear shaft 51 concentrates scattered power on the main power input wheel 52 to finish the first speed reduction, meanwhile, due to the effect of the primary bearing shaft 53, the primary bearing shaft 53 is used for bearing and supporting the weight of a plurality of wheels on the one hand, on the other hand, the wheels fixed on the primary bearing shaft 53 achieve the aim of synchronous operation, so that the synchronous energy transmission between the main power input wheel 52 and the secondary power input wheel 54 is finished, and then the secondary power input wheel 54 transmits the energy to the main transmission output wheel 57 to finish the second speed reduction. Similarly, due to the secondary bearing shaft 58, the primary drive output wheel 57 transfers energy to the sun gear 59, whereupon the sun gear 59 in turn transfers energy to the planetary gear set 512, completing a third deceleration. The planetary gear set 512 ultimately transmits the retarded energy to the crankshaft 3 through the crankshaft docking shaft 511, ultimately causing it to drive the pump fluid end 2 set.

Example two

As shown in fig. 4, 5 and 6, when two reduction boxes 5 are adopted, the reduction boxes 5 are arranged at the left side and the right side of the lower part of the base 1, at least 8 middle and high speed motors 4 are arranged in a matching way, each 4 sets are in a group, each group is correspondingly connected with one reduction box 5, and the high speed motors 4 in the 4 sets are distributed in an equilateral square shape; the 8 middle high-speed motors 4 are arranged at the lower half part of the base 1, the output shafts of the 4 middle high-speed motors 4 are connected to the input end of one reduction gearbox 5 through a coupler (the connecting structure type can be a coupler, a spline shaft or an expansion sleeve), the output shafts of the 4 middle high-speed motors 4 are circumferentially distributed around the main power input wheel 52, as shown in fig. 6 and 7, the distribution of the motors is not required to be symmetrical, only the space position installation on the base is met, and the mechanical coupling transmission is realized through gear engagement. In addition, an intermediate transmission area B is provided in the reduction gearbox 5 of the present embodiment. Thereby increasing the overall internal accommodation space of the reduction gearbox 5, increasing the space, and facilitating the installation of more motors.

Firstly, the high-speed motor 4 in each group of 4 sets is started, power is transmitted to each input gear shaft 51 of the corresponding connected reduction gearbox 5 through an output shaft, the input gear shafts 51 are integrally formed by adopting an integrated design, the processing is convenient, the installation is convenient, each input gear shaft 51 concentrates scattered power on the main power input wheel 52 again to finish the first speed reduction, meanwhile, due to the effect of the primary bearing shaft 53, the primary bearing shaft 53 is used for bearing and supporting the weight of a plurality of wheels on the one hand, on the other hand, the wheels fixed on the primary bearing shaft 53 achieve the purpose of synchronous operation, so that the synchronous energy transmission is finished between the main power input wheel 52 and the secondary power input wheel 54, then, the secondary power input wheel 54 transmits the energy to the idler wheel 56 in the middle transmission area B, and after the idler wheel 56 is meshed and connected with the main transmission output wheel 57, the energy is transmitted to the main transmission output wheel 57 to finish the second speed reduction. Similarly, due to the secondary bearing shaft 58, the primary drive output wheel 57 transfers energy to the sun gear 59, whereupon the sun gear 59 in turn transfers energy to the planetary gear set 512, completing a third deceleration. The planetary gear set 512 ultimately transmits the retarded energy to the crankshaft 3 through the crankshaft docking shaft 511, ultimately causing it to drive the pump fluid end 2 set.

The utility model adopts a plurality of low-power and medium-high-speed motors 4 (such as a rail-level high-speed permanent magnet synchronous motor 4, high efficiency) as a power input source, so that the annual output is large, the purchase and the replacement are convenient, and the cost is low; the input shaft, the gear pair and the crankshaft gear ring of the existing slurry pump are removed, so that the structural design of the slurry pump is simplified, and the volume and the weight of the pump body are greatly reduced; the parallel gears and the planetary gears are adopted for multistage transmission, the reduction ratio is large, the transmission efficiency is high, the structure is compact, the weight is light, and the condition that the medium-high speed motor 4 drives to meet the working condition of a slurry pump can be realized; when a certain motor 4 fails, redundancy is realized under the condition of reduced power operation (one of the motors is stopped); the whole set of slurry pump is more than 30% lighter than the existing electrically-driven slurry pump, has small volume and can realize the whole loading and transportation. The utility model solves the problem which is always needed to be solved in the field, and has obvious economic benefit and social benefit.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.

Claims (4)

1. A multi-power driving slurry pump for petroleum engineering is characterized in that: the device comprises a base, wherein a pump hydraulic end group and a plurality of medium-high speed motors are arranged on the base, the telescopic end of the pump hydraulic end group is connected to a crankshaft, the end part of the crankshaft is connected to an output port of a reduction gearbox through a coupling, the reduction gearbox is arranged on the side of the base, and the input end of the reduction gearbox is connected with the plurality of medium-high speed motors; the plurality of medium-high speed motors drive the crankshafts after being decelerated by the reduction gearbox, and then drive the hydraulic ends of the pumps to run; when one reduction gearbox is adopted, the reduction gearbox is arranged on one side of the rear part of the base, at least 2 middle and high speed motors are arranged in a matched mode, the middle and high speed motors are arranged on the lower half part of the base, and output shafts of the middle and high speed motors are connected to the input end of the reduction gearbox through a coupling; when the reduction gearbox adopts two, two reduction gearboxes are located the left and right sides at base rear portion respectively, and many medium-high speed motors match and are equipped with 4 at least, and many medium-high speed motors locate the lower half of base, and many medium-high speed motors evenly distribute into two sets of, and the output shaft of every group is connected to the input of corresponding reduction gearbox respectively through the shaft coupling.

2. The multi-power driven slurry pump for petroleum engineering according to claim 1, wherein: the reduction gearbox comprises a gearbox body, wherein a power input area and a reduction output area are arranged in the gearbox body from bottom to top, an input gear shaft group is arranged in the power input area, the power driving end of each input gear shaft in the input gear shaft group extends out of the gearbox body and is connected with an output shaft of a medium-high speed motor through a coupling, the power output wheels of the input gear shafts are meshed and connected with a main power input wheel, the input gear shaft group is distributed around the circumference of the main power input wheel, and the main power input wheel is connected with a secondary power input wheel through a primary bearing shaft; the speed reduction output area in be equipped with main drive output wheel, main drive output wheel meshing connection secondary power input wheel, main drive output wheel passes through the secondary and holds the pivot linkage sun gear, sun gear meshing connection planetary gear subassembly to it is fixed with the box through planetary gear subassembly, planetary gear subassembly's center is fixed with the bent axle butt joint axle, bent axle butt joint axle stretches out outside the box and passes through the shaft coupling and dock with the bent axle tip.

3. The multi-power driven slurry pump for petroleum engineering according to claim 2, wherein: the planetary gear assembly comprises a planetary gear set, a planetary carrier and a planetary gear set external gear ring, the planetary gear set is in meshed connection with a sun gear, the planetary carrier is covered between the planetary gear sets, a crankshaft butt-joint shaft is arranged at the center of the end face of the planetary carrier, peripheral gears of the planetary gear set are in meshed connection with the planetary gear set external gear ring, and the planetary gear set external gear ring is fixed with the inner wall of the box body.

4. A multi-power driven mud pump for petroleum engineering according to claim 3, wherein: the reduction gearbox further comprises a middle transmission area, the middle transmission area is arranged between the power input area and the reduction output area, a middle bearing shaft and an idler wheel are arranged in the middle transmission area, the primary bearing shaft, the middle bearing shaft and the secondary bearing shaft are arranged in parallel from bottom to top, the idler wheel is arranged on the middle bearing shaft, and the idler wheel is in meshed connection with the secondary power input wheel and the main transmission output wheel.

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