CN210599303U - Five-cylinder plunger pump - Google Patents
Five-cylinder plunger pump Download PDFInfo
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- CN210599303U CN210599303U CN201921571823.4U CN201921571823U CN210599303U CN 210599303 U CN210599303 U CN 210599303U CN 201921571823 U CN201921571823 U CN 201921571823U CN 210599303 U CN210599303 U CN 210599303U
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Abstract
The utility model discloses a five jar plunger pumps, including power end assembly, fluid end assembly and reducing gear box assembly, the one end and the fluid end assembly of power end assembly are connected, the other end and the reducing gear box assembly of power end assembly are connected, the reducing gear box assembly includes planet reducing gear box and parallel level reducing gear box, planet reducing gear box and parallel level reducing gear box cooperation are used, and its drive ratio is 60: 1-106: 1. Has the advantages that: the rated input power of the turbine fracturing equipment is increased to 5000-7000hp, the 10-12in stroke can be achieved, the maximum input rotating speed of a reduction gearbox assembly on the plunger pump is increased to 16000rpm from the existing 2100rpm, and the reduction gearbox assembly can be directly connected with a turbine engine, so that the problem that the turbine fracturing equipment is decelerated by two reduction gearboxes is solved, the weight of the whole vehicle is reduced, and the overall dimension of the equipment is reduced.
Description
Technical Field
The utility model relates to a plunger pump technical field, concretely relates to five jar plunger pumps.
Background
Along with the continuous development of ultrahigh pressure, ultra-deep wells and horizontal wells of oil and gas fields, the operation working conditions of the fracturing equipment are more and more severe, and high-pressure and large-displacement operation is required, so that the requirement on a plunger pump is higher and higher, and a single piece of fracturing equipment can output high pressure and large displacement, so that the plunger pump is required to output high power and high pressure; particularly, in unconventional oil and gas operation, namely shale gas operation, the operation working condition is severe, long-time, large-displacement and high-pressure operation is required, and the operation frequency is more and more frequent, so that the requirement on fracturing equipment is higher and higher, and the plunger pump is a core component in the fracturing equipment, so that the requirement on the plunger pump is higher and higher; the turbine fracturing equipment adopts a motor to drive and adopts a turbine engine to provide power, the input power can reach 5600hp, the input rotating speed can reach 16000rpm, the maximum power of a plunger pump in the current market reaches 7000hp, but the highest input rotating speed is about 2100rpm, the structure adopted by the common turbine fracturing equipment depends on the turbine engine to output power, the output end of the turbine engine is connected with a high-speed heavy-load reduction gearbox, and the high-speed heavy-load reduction gearbox mainly reduces the high rotating speed of the turbine engine to about 2100rpm, increases the output torque and achieves the effects of reducing the speed and increasing the torque; the output end of the high-speed heavy-load reduction gearbox is connected with the transmission shaft, and the other end of the transmission shaft is connected with the reduction gearbox on the plunger pump; the reduction box of the plunger pump mainly functions to reduce the input rotating speed from 2100rpm to hundreds of revolutions; the effects of reducing the speed and increasing the torque are also achieved; therefore, two reduction boxes and a transmission shaft are required on the whole turbine fracturing equipment; therefore, the weight and the overall dimension of the whole vehicle are increased, and the layout of the whole vehicle is influenced; therefore, an ultrahigh rotating speed and ultrahigh power plunger pump needs to be developed to be matched with the turbine fracturing equipment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a not enough of prior art is overcome to the purpose, provide a five jar plunger pumps, its rated input power increases to 5000 and supplyes 7000hp, can reach 10-12in strokes, the highest input rotational speed of the reducing gear box assembly on the plunger pump is increased to 16000rpm by current 2100rpm, the speed reduction requirement from turbine engine to between the plunger pump has been satisfied, the reducing gear box can directly link to each other with turbine engine promptly, rely on two reducing gear boxes to slow down with solving current turbine fracturing equipment, thereby reduce the weight of whole car and reduce equipment overall dimension.
The purpose of the utility model is achieved through the following technical measures: the five-cylinder plunger pump comprises a power end assembly, a hydraulic end assembly and a reduction gearbox assembly, wherein one end of the power end assembly is connected with the hydraulic end assembly, the other end of the power end assembly is connected with the reduction gearbox assembly, the reduction gearbox assembly comprises a planetary reduction gearbox and a parallel reduction gearbox, the planetary reduction gearbox and the parallel reduction gearbox are matched for use, and the transmission ratio of the planetary reduction gearbox to the parallel reduction gearbox is 60: 1-106: 1.
Furthermore, the number of the planetary reduction boxes is 2, and the planetary reduction boxes comprise a first planetary reduction box and a second planetary reduction box, one end of the first planetary reduction box is connected with the power end assembly, the other end of the first planetary reduction box is connected with the parallel reduction box, and the other end of the parallel reduction box is connected with the second planetary reduction box.
Furthermore, the planetary reduction box comprises a sun gear, four planetary gears and a gear ring, the four planetary gears are arranged in a planetary gear mechanism, the sun gear is positioned in the center of the planetary gear mechanism, the planetary gears, the adjacent sun gear and the adjacent gear ring are in a constant meshing state, the parallel reduction box comprises a small gear and a big gear, the small gear is coaxial with the sun gear in the first planetary reduction box, and the big gear is coaxial with the sun gear of the second planetary reduction box.
Furthermore, the other end of the power end assembly is connected with the reduction gearbox assembly through a spline or a flexible coupling.
Furthermore, the input angle of the reduction gearbox assembly can be adjusted according to the input requirement.
Further, power end assembly includes crankcase, cross head box and spacer, the one end and the crankcase of cross head box are connected, the other end and the spacer of cross head box are connected, and hydraulic end assembly establishes in spacer one end, passes spacer, cross head box in proper order through the bolt and is connected with the crankcase, and the reducing gear box assembly passes through the bolt and is connected with the crankcase, bent axle in the crankcase adopts alloy steel forging to form, including six journals and five cranks, establishes a crank throw between two adjacent journals, the rotation center distance of crank throw and bent axle is 120 to 160 mm.
Further, be equipped with cross head mechanism in the crosshead box, be equipped with link mechanism in crankcase and crosshead box, link mechanism one end is connected with the bent axle, and the link mechanism other end is connected with cross head mechanism, and link mechanism includes connecting rod cap, connecting rod axle bush and connecting rod body, and the connecting rod cap passes through bolted connection with the connecting rod body, and the connecting rod axle bush is located the cylindrical space that connecting rod cap and connecting rod body coupling formed, and connecting rod axle bush both sides are flange structure, and broadside structure width is than big.
Compared with the prior art, the beneficial effects of the utility model are that: through changing the drive ratio of reducing gear box assembly to promote the highest input rotational speed (reach 16000rpm), will have between turbine engine and the pump through the connected mode of 2 reducing gear boxes and a transmission shaft, shorten to turbine engine and can directly be connected with the reducing gear box assembly on the pump, can also satisfy its speed reduction requirement, make whole fracturing equipment structure simplify, length has shortened, the transportation has made things convenient for, investment cost has reduced, the maintenance has made things convenient for. By optimizing the distance between the crank throw and the rotation center of the crankshaft, the maximum power of the plunger pump is improved, and the current 5000-7000hp is achieved. The two sides of the connecting rod bearing bush are of the flanging structures, the width-diameter ratio of the flanging structures is large, high bearing capacity can be achieved, and the positioning effect is good. The input angle of the reduction gearbox can be adjusted according to input requirements, multi-angle adjustment can be met, and the reduction gearbox is suitable for various installation requirements.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural view of a five-cylinder plunger pump.
FIG. 2 is a schematic structural view of the reduction gearbox assembly.
FIG. 3 is a schematic diagram of a power end assembly.
Fig. 4 is a cross-sectional view of a five-cylinder plunger pump.
FIG. 5 is a sectional view of the reduction gearbox assembly in the directions B-B and D-D (planetary reduction gearbox).
FIG. 6 is a cross-sectional view of the reduction gearbox assembly in the direction C-C (parallel stage reduction gearbox).
Fig. 7 is a schematic view of a connection structure of the link mechanism and the crosshead mechanism.
Fig. 8 is a schematic view of a crankshaft structure.
The hydraulic power end assembly comprises a power end assembly 1, a hydraulic end assembly 2, a reduction gearbox assembly 3, a crankcase body 4, a crosshead box body 5, a spacing frame 6, a crankshaft 7, a journal 8, a crank 9, a cylindrical roller shaft 10, a valve box 11, a plunger 12, a bearing seat 13, a front end plate 14, a cover plate 15, a support leg 16, a slide rail 17, a tie rod screw 18, a connecting rod cover 19, a connecting rod bearing bush 20, a connecting rod body 21, a crosshead 22, a crosshead 23, a crosshead 24, a crosshead connecting screw 25, a crosshead guide plate 26, a guide plate bolt 27, a tie rod 28, a first planetary reduction gearbox 29, a parallel reduction gearbox 30, a second planetary reduction gearbox 31, a big gear 32, a small gear 33, a planetary gear 34, a gear ring 35 and a sun gear 36.
Detailed Description
As shown in fig. 1 to 8, a five-cylinder plunger pump comprises a power end assembly 1, a hydraulic end assembly 2 and a reduction gearbox assembly 3, wherein one end of the power end assembly 1 is connected with the hydraulic end assembly 2, the other end of the power end assembly 1 is connected with the reduction gearbox assembly 3, the reduction gearbox assembly 3 comprises a planetary reduction gearbox 29 and a parallel reduction gearbox 30, the planetary reduction gearbox 29 and the parallel reduction gearbox 30 are used in a matching manner, and the transmission ratio is 60: 1-106: 1. Through changing the drive ratio of reducing gear box assembly 3 to promote the highest input rotational speed (reach 16000rpm), will have between turbine engine and the pump through the connected mode of 2 reducing gear boxes and a transmission shaft, shorten to turbine engine and can directly be connected with reducing gear box assembly 3 on the pump, can also satisfy its speed reduction requirement, make whole fracturing equipment structure simplify, the length has shortened, the transportation has made things convenient for, investment cost has reduced, easy maintenance.
The number of the planetary reduction boxes is 2, each planetary reduction box comprises a first planetary reduction box 29 and a second planetary reduction box 31, one end of each first planetary reduction box 29 is connected with the crankshaft 7 of the power end assembly, the other end of each first planetary reduction box 29 is connected with the parallel stage reduction box 30, the other end of each parallel stage reduction box 30 is connected with the second planetary reduction box 31, and the other end of each second planetary reduction box 31 is connected with a transmission shaft of the turbine engine. In operation, the kinetic energy transmitted by the transmission shaft of the turbine engine is decelerated for the first time by the second planetary reduction gearbox 31, decelerated for the second time by the parallel reduction gearbox 30 and decelerated for the third time by the first planetary reduction gearbox 29.
The planetary reduction box comprises a sun gear 36, four planetary gears 34 and a gear ring 35, the four planetary gears 34 form a planetary gear mechanism, the sun gear 36 is positioned in the center of the planetary gear mechanism, the planetary gears 34, the adjacent sun gear 36 and the adjacent gear ring 35 are in a constant meshing state, the planetary reduction box adopts four planetary gears 34 which are uniformly distributed to simultaneously transmit motion and power, the centrifugal inertia force generated by the revolution of the four planetary gears 34 and the radial component force of the reaction force between tooth profiles are balanced and offset, the stress of a main shaft is reduced, and the high-power transmission is realized. The parallel reduction gearbox 30 comprises a pinion 33 and a gearwheel 32, the pinion 33 is coaxial with a sun gear 36 in the first planetary reduction gearbox 29, and the gearwheel 32 is coaxial with a sun gear 36 of the second planetary reduction gearbox 31. The reduction is achieved by the transmission of the pinion gear 33 to the bull gear 32 within the parallel stage reduction gearbox 30.
The other end of the power end assembly 1 is connected with the reduction gearbox assembly 3 through a spline or a flexible coupling.
The power end assembly 1 adopts a sectional type structural design, the sectional type design enables the overall structure of the power end assembly 1 to be compact, the processing and the manufacturing to be easier, the assembly and the later maintenance of the whole pump to be more convenient, and the processing cost is also reduced. The power end assembly 1 comprises a crankshaft box body 4, a crosshead box body 5 and a spacing frame 6, one end of the crosshead box body 5 is connected with the crankshaft box body 4, the other end of the crosshead box body 5 is connected with the spacing frame 6, a hydraulic end assembly 2 is arranged at one end of the spacing frame 6 and sequentially penetrates through the spacing frame 6 and the crosshead box body 5 through bolts to be connected with the crankshaft box body 4, a reduction gearbox assembly 3 is connected with the crankshaft box body 4 through bolts, a crankshaft 7 in the crankshaft box body 4 is forged by alloy steel and comprises six shaft necks 8 and five crank throws 9, and a crank throw 9 is arranged between every two adjacent shaft necks 8, namely a five-cylinder structural design is adopted, the output displacement of a plunger pump is increased by adopting the five-cylinder structural design, and meanwhile compared with a three-cylinder pump, the five-cylinder pump is stable and free of vibration in operation, the vibration of the whole; the distance between the crank throw 9 and the rotation center of the crankshaft 7 is 120-160 mm. Through further research on the distance between the crank throw 9 and the rotation center of the crankshaft 7, the maximum power of the plunger pump is improved to reach the current 5000 + 7000hp, the plunger pump can output higher pressure, namely technical support is provided for long stroke, and the stroke of the plunger pump can reach 10-12 in. The operation requirement of large discharge capacity can be realized, the stroke frequency of the pump is reduced, and the service life of each part is prolonged.
The hydraulic end assembly 2 comprises a valve box 11 and a plunger 12, wherein the plunger 12 is arranged in the valve box 11, the crankcase body 4 is formed by welding steel plates, six bearing blocks 13, a front end plate 14, a cover plate 15, supporting legs 16 and the like are combined and then welded together, and the bearing blocks 13 and the front end plate 14 are subjected to finish machining after welding. The crosshead box body 5 is formed by welding steel plates, a circular arc-shaped slide rail 17 is fixed on the crosshead box body 5, and the circular arc-shaped slide rail 17 is forged by alloy steel; the spacing frame 6 is provided with an arch-shaped support column, so that the support strength is improved; through holes are reserved on the crosshead box body 5 and the spacing frame 6, and the hydraulic end valve box 11 sequentially penetrates through the spacing frame 6 and the crosshead box body 5 through bolts to be connected with the crankshaft box body 4. A cylindrical roller shaft 10 is arranged on the journal 8, and the outer ring of the cylindrical roller shaft 10 is arranged on a bearing seat 13.
Be equipped with cross head mechanism in the cross head box 5, be equipped with link mechanism in crankcase 4 and cross head box 5, link mechanism one end is connected with bent axle 7, the link mechanism other end is connected with cross head mechanism, link mechanism includes connecting rod cover 19, connecting rod axle bush 20 and connecting rod body 21, connecting rod cover 19 passes through bolted connection with connecting rod body 21, connecting rod axle bush 20 is located connecting rod cover 19 and is connected the cylindrical space that forms with connecting rod body 21, connecting rod axle bush 20 both sides are flange structure, broadside structure width ratio is big, can realize higher bearing capacity, and positioning effect is good. The crosshead mechanism comprises a crosshead 22, a crosshead gland 23, a crosshead connecting screw 24, a crosshead guide plate 25 and a guide plate bolt 26, the crosshead 22 and the crosshead gland 23 are forged by alloy steel, one end of the connecting rod mechanism is connected with the crank 9, and the other end of the connecting rod mechanism is connected with the crosshead 22 through the crosshead gland 23 and the crosshead connecting screw 24; a crosshead guide plate 25 is fixed on the crosshead 22 through a guide plate bolt 26, the crosshead guide plate 25 is arc-shaped, and the surface of the crosshead guide plate 25 is provided with an oil groove; the crosshead 22 is connected to the plunger 12 of the fluid end assembly 2 by a tie rod 27 and a clip 28, and further, the crosshead 22 is connected to the tie rod 27 by a tie rod screw 18.
The input angle of the reduction gearbox assembly 3 can be adjusted according to the input requirement. Can satisfy multi-angle adjustment, adapt to multiple installation demand.
The reduction gearbox assembly 3 drives the crankshaft 7 to rotate, the crankshaft 7 rotates in a bearing supported by the bearing seat 13, the crankshaft 7 drives the connecting rod body 21, the connecting rod body 21 drives the crosshead 22, the crosshead 22 reciprocates in the arc-shaped slide rail 17 of the crosshead box body 5, and the crosshead 22 drives the plunger 12 to reciprocate in the valve box 11 of the hydraulic end assembly 2 through the pull rod 27, so that liquid is sucked and discharged.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A five-cylinder plunger pump is characterized in that: the hydraulic power transmission device comprises a power end assembly, a hydraulic end assembly and a reduction gearbox assembly, wherein one end of the power end assembly is connected with the hydraulic end assembly, the other end of the power end assembly is connected with the reduction gearbox assembly, the reduction gearbox assembly comprises a planetary reduction gearbox and a parallel reduction gearbox, the planetary reduction gearbox and the parallel reduction gearbox are matched for use, and the transmission ratio of the planetary reduction gearbox and the parallel reduction gearbox is 60: 1-106: 1.
2. The five-cylinder plunger pump of claim 1, wherein: the planetary reduction box has 2, including first planetary reduction box and second planetary reduction box, and the one end of first planetary reduction box is connected with power end assembly, and the other end of first planetary reduction box is connected with parallel level reduction box, and the other end of parallel level reduction box is connected with second planetary reduction box.
3. The five-cylinder plunger pump of claim 2, wherein: the planetary reduction gearbox comprises a sun gear, four planetary gears and a gear ring, the four planetary gears are arranged in a planetary gear mechanism, the sun gear is located in the center of the planetary gear mechanism, the planetary gears and the adjacent sun gear and the gear ring are in a constant meshing state, the parallel reduction gearbox comprises a small gear and a large gear, the small gear is coaxial with the sun gear in the first planetary reduction gearbox, and the large gear is coaxial with the sun gear of the second planetary reduction gearbox.
4. The five-cylinder plunger pump of claim 1, wherein: the input angle of the reduction gearbox assembly can be adjusted according to input requirements.
5. The five-cylinder plunger pump of claim 1, wherein: the other end of the power end assembly is connected with the reduction gearbox assembly through a spline or a flexible coupling.
6. The five-cylinder plunger pump of claim 1, wherein: the power end assembly includes crankcase, cross head box and space stop, the one end and the crankcase of cross head box are connected, the other end and the space stop of cross head box are connected, and hydraulic end assembly establishes in space stop one end, passes space stop, cross head box in proper order through the bolt and is connected with the crankcase, and the reducing gear box assembly passes through the bolt and is connected with the crankcase, bent axle in the crankcase adopts alloy steel forging to form, including six journals and five cranks, establishes a crank throw between two adjacent journals, the rotation center distance of crank throw and bent axle is 120 to 160 mm.
7. The five-cylinder plunger pump of claim 6, wherein: the improved crosshead mechanism is characterized in that a crosshead mechanism is arranged in the crosshead box body, a connecting rod mechanism is arranged in the crankcase body and the crosshead box body, one end of the connecting rod mechanism is connected with a crankshaft, the other end of the connecting rod mechanism is connected with the crosshead mechanism, the connecting rod mechanism comprises a connecting rod cover, a connecting rod bearing bush and a connecting rod body, the connecting rod cover is connected with the connecting rod body through a bolt, the connecting rod bearing bush is located in a cylindrical space formed by connecting the connecting rod cover and the connecting rod body, two sides of the connecting rod bearing bush are of.
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| CN201921571823.4U CN210599303U (en) | 2019-09-20 | 2019-09-20 | Five-cylinder plunger pump |
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| CN201921571823.4U CN210599303U (en) | 2019-09-20 | 2019-09-20 | Five-cylinder plunger pump |
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