WO2021081750A1 - Pompe à piston plongeur à cinq cylindres de support à points multiples - Google Patents

Pompe à piston plongeur à cinq cylindres de support à points multiples Download PDF

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Publication number
WO2021081750A1
WO2021081750A1 PCT/CN2019/113975 CN2019113975W WO2021081750A1 WO 2021081750 A1 WO2021081750 A1 WO 2021081750A1 CN 2019113975 W CN2019113975 W CN 2019113975W WO 2021081750 A1 WO2021081750 A1 WO 2021081750A1
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WO
WIPO (PCT)
Prior art keywords
crosshead
assembly
support
crankcase
power end
Prior art date
Application number
PCT/CN2019/113975
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English (en)
Chinese (zh)
Inventor
崔海萍
崔文平
魏小淞
孙言静
Original Assignee
烟台杰瑞石油装备技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 烟台杰瑞石油装备技术有限公司 filed Critical 烟台杰瑞石油装备技术有限公司
Priority to PCT/CN2019/113975 priority Critical patent/WO2021081750A1/fr
Publication of WO2021081750A1 publication Critical patent/WO2021081750A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical

Definitions

  • the invention relates to the technical field of plunger pumps, in particular to a multi-point supported five-cylinder plunger pump.
  • the pressure and displacement requirements of fracturing operations are constantly increasing. Not only does the operating pressure continue to increase with the increase in the depth of horizontal wells, but also the discharge required for single-stage wells The volume is also getting higher and higher, which makes the scale of fracturing construction larger and larger, and the harsh operating conditions also place higher requirements on the fracturing equipment, especially the plunger pump.
  • the operating pressure generally reaches 80-90MPa or even higher, and the single-stage operating displacement is generally 1800m 3 -2000m 3 or more.
  • the plunger pump must not only be able to meet the high pressure and large displacement Continuous operation must also ensure the quality stability under continuous high-load operation and reduce pump shutdown time and maintenance time.
  • the most widely used fracturing truck on the market is the 2500 fracturing truck, which is equipped with a 2800hp plunger pump.
  • Other commonly used fracturing pumps include 2500hp pump, 3300hp pump, 4000hp pump, etc.
  • Take 2800hp pump as an example due to power limitation In high-pressure operation, the single pump displacement is relatively low.
  • a shale gas well site with a single-stage displacement requirement of 14-16m 3 /min requires close to 20 fracturing trucks to operate at the same time to meet the total fracturing operation.
  • Displacement requirements will occupy a large area of the well site and increase the difficulty of equipment layout in small oil and gas field well sites.
  • conventional plunger pumps are facing increasingly harsh operating conditions and remain high for a long time. Load work, the frequency of problems is also increasing, increasing the cost of maintenance and overhaul.
  • electric drive fracturing operations have emerged. The use of electric motor drive has also solved the problem of limited diesel engine power, and is more suitable for driving high-power plunger pumps.
  • the purpose of the present invention overcomes the shortcomings of the prior art and provides a multi-point supported five-cylinder plunger pump.
  • the crankcase and crosshead box in the power end assembly of the five-cylinder plunger pump adopt an integral welding structure, which makes the structure of the power end assembly stronger, better support stability, and can reduce the vibration of the whole pump.
  • the cylinder spacing of the five-cylinder plunger pump is designed to be 13-14 inches, which increases the bearing area of the connecting rod, crosshead and bearing bush, and provides protection for the high-power output of the five-cylinder plunger pump.
  • the power can reach 7000hp.
  • the high-power five-cylinder plunger pump can effectively solve the problems of narrow shale gas fracturing wellsite area and more fracturing equipment required, reducing the use of equipment and facilitating well site layout.
  • a multi-point supported five-cylinder plunger pump including a power end assembly, a hydraulic end assembly and a reduction box assembly
  • the power end assembly including a crankcase Body, crosshead box body and spacer frame, the crankcase body, crosshead box body and spacer frame are connected in sequence, the hydraulic end assembly is fixed on the spacer frame, and the reduction box assembly is fixed on the crankcase body
  • the bottom of the crankcase body is provided with a crankshaft support body
  • the crankshaft support body is used to support the crankcase body
  • the bottom of the crosshead box body is provided with a crosshead support body
  • the crosshead support body is used to support the crosshead
  • the head box body is provided with a hydraulic support body at the bottom of the spacer
  • the hydraulic support body is used to support the hydraulic end assembly.
  • crankcase body and the crosshead box body are integrally welded to form a power end shell, and the power end shell is connected to the spacer frame.
  • the power end shell includes a vertical plate, a bearing seat, a front end plate, and a rear cover plate.
  • the bottom plate, the support plate and the upper cover plate, the number of the vertical plates is 6, the number of the bearing seats is 6, one vertical plate is connected to a bearing seat, and the 6 vertical plates are arranged in parallel to form a power end cavity,
  • a bottom plate is installed at the bottom of the power end cavity, an upper cover plate is installed on the top of the power end cavity, a front end plate is installed at the front end of the power end cavity, and a front end plate is installed at the rear end of the power end cavity
  • the back cover is provided with a supporting plate between two adjacent vertical plates arranged in parallel.
  • a crosshead assembly is arranged in the crosshead box, a connecting rod assembly is arranged between the crankcase and the crosshead box, a crankshaft is arranged in the crankcase, and one end of the connecting rod assembly passes through the connecting rod.
  • the bearing bush is connected with the crankshaft, and the other end of the connecting rod assembly is connected with the crosshead assembly through a crosshead bushing.
  • the connecting rod bushing and the crosshead bushing are both steel-backed bushings with alloy plating.
  • the cylinder spacing of the five-cylinder plunger pump is 13-14 inches.
  • the present invention has the following beneficial effects: through the multi-point support design of the crankcase, the crosshead case and the hydraulic end assembly, the support strength of the five-cylinder plunger pump can be improved, and vibration can be reduced. It can better ensure high-load operation and run more smoothly.
  • the crankcase and crosshead box in the power end assembly of the five-cylinder plunger pump adopt an integral welding structure, which makes the structure of the power end assembly stronger, better support stability, and can reduce the vibration of the whole pump.
  • the cylinder spacing of the five-cylinder plunger pump is designed to be 13-14 inches, which increases the bearing area of the connecting rod, crosshead and bearing bush, and provides protection for the high-power output of the five-cylinder plunger pump.
  • the power can reach 7000hp.
  • the high-power five-cylinder plunger pump can effectively solve the problems of narrow shale gas fracturing wellsite area and more fracturing equipment required, reducing the use of equipment and facilitating well site layout.
  • Figure 1 is a schematic diagram of the structure of the five-cylinder plunger pump.
  • Figure 2 is a schematic diagram of the structure of the power end assembly.
  • Figure 3 is a schematic diagram of the structure of the power end housing.
  • Figure 4 is a schematic diagram of the structure of the reduction gearbox assembly.
  • Figure 5 is a cross-sectional view of the planetary gearbox.
  • Figure 6 is a cross-sectional view of a parallel-stage reduction gearbox.
  • Figure 7 is a schematic diagram of the crankshaft structure.
  • Figure 8 is a schematic diagram of the connecting rod assembly and the crosshead assembly connection structure.
  • a five-cylinder plunger pump with an integral power end structure includes a power end assembly 1, a hydraulic end assembly 3, and a reduction box assembly 2.
  • the power end assembly One end of the assembly 1 is connected to the hydraulic end assembly 3, and the other end of the power end assembly 1 is connected to the reduction box assembly 2.
  • the power end assembly 1 includes a crankcase, a crosshead box and a spacer 14
  • the crankcase body and the crosshead box body are integrally welded to form a power end shell 5.
  • the power end shell 5 is connected to the spacer frame 14.
  • the power end shell 5 includes a vertical plate 24, a bearing seat 25, and a front end plate. 28.
  • Six vertical plates 24 are arranged in parallel to form a power end cavity.
  • a bottom plate 26 is installed at the bottom of the power end cavity, and an upper cover 29 is installed on the top of the power end cavity.
  • a front end plate 28 is installed at the front end, a rear cover 23 is installed at the rear end of the power end cavity, and a support plate 27 is provided between two adjacent vertical plates 24 arranged in parallel.
  • the crankcase and crosshead box in the power end assembly 1 of the five-cylinder plunger pump adopt an integral welding structure, which makes the structure of the power end assembly 1 stronger, better support stability, and can effectively reduce the power end shell.
  • the body 5 is deformed under load, which can reduce the vibration of the whole pump and improve the operation stability of the five-cylinder plunger pump.
  • a crankshaft support body 20 is provided at the bottom of the crankcase body, and the crankshaft support body 20 is used to support the crankshaft case body.
  • a crosshead support body 21 is provided at the bottom of the crosshead box body, and the crosshead support body 21 is used to support the crosshead box body.
  • the bottom of the spacer 14 is provided with a hydraulic support 22, and the hydraulic support 22 is used to support the hydraulic end assembly 3.
  • the five-cylinder plunger pump adopts a multi-point support design, which can improve the support strength of the five-cylinder plunger pump, reduce vibration, and better ensure high-load operation and run more smoothly.
  • a crankshaft 6 and a bearing 7 are provided in the crankcase body.
  • the crankshaft 6 is integrally forged with alloy steel.
  • the crankshaft 6 includes six journals and five crankshafts, between two adjacent journals.
  • a crank is set, and the cylinder spacing of the five-cylinder plunger pump is 13-14 inches.
  • Increasing the cylinder spacing design is beneficial to increase the contact area between the crankshaft 6 and the connecting rod bush 8, the crosshead 11 and the slide rail 10, and improve the support strength.
  • the high-power five-cylinder plunger pump can effectively solve the problems of narrow shale gas fracturing wellsite area and more fracturing equipment required, which can reduce the use of equipment and facilitate Well site layout.
  • There are 6 bearings 7 and the 6 bearings 7 are installed on the six journals. At the same time, the outer ring of the bearing 7 is assembled on the 6 bearing seats 25 of the power end housing 5, and the rotary motion can be realized in the bearing
  • the crankshaft 6 is provided with a spline 38, the reduction box assembly 2 is connected to the power end housing 5 by bolts, and the reduction box assembly 2 is provided with an external spline, and the external spline is connected to the spline 38 Connected for power output, the installation angle of the reduction box assembly 2 can be adjusted according to the input requirements.
  • the reduction box assembly 2 is provided with a driving flange 4, and the driving flange 4 is connected with an external power source to realize power input.
  • the crosshead box body is provided with a crosshead assembly, a connecting rod assembly is arranged between the crankcase body and the crosshead box body, a crankshaft 6 is arranged in the crankcase body, and one end of the connecting rod assembly passes through the connecting rod bearing bush 8 Connected to the crankshaft 6, the other end of the connecting rod assembly is connected to the crosshead assembly through the crosshead bearing 12 to realize reciprocating swing, and the other end of the crosshead assembly is connected to the pull rod 13.
  • the tie rod 13 has a hollow structure.
  • the connecting rod bearing 8 and the crosshead bearing 12 are both steel-backed bearings with alloy plating. The width to diameter ratio is large, and the support strength is high.
  • Slide rails 10 are fixed on the support plate 27 in the power end housing 5, there are two slide rails 10, and the two slide rails 10 form a semicircular space.
  • the crosshead 11 is installed in the semicircular space to achieve reciprocation. Straight line movement.
  • the crosshead always has a split structure design, including the crosshead gland 41 and the crosshead 11.
  • the crosshead gland 41 and the crosshead 11 are connected to facilitate the assembly and disassembly of the connecting rod assembly.
  • the connecting rod assembly includes a connecting rod cover 39 and a connecting rod body 9.
  • the connecting rod cover 39 and the connecting rod body 9 are made of integral forging and then cut with high strength.
  • the connecting rod cover 39 and the connecting rod body 9 are connected by bolts. Specifically, one end of the connecting rod body 9 is connected to the crank through the connecting rod cover 39, the connecting rod bolt 40 and the connecting rod bearing bush 8, and the other end of the connecting rod body 9 is connected to the crosshead through the crosshead gland 41 and the crosshead bearing bush 12 11Connect.
  • the upper and lower ends of the crosshead 11 are respectively fixed with guide plates 42 by screws 43.
  • the guide plates 42 are made of copper alloy and directly contact the slide rail 10 for relative movement.
  • crankshaft 6, the connecting rod body 9, and the crosshead 11 are all designed with a lubricating oil circuit for lubricating the bearing 7, the connecting rod bushing 8, and the crosshead bushing 12.
  • the hydraulic end assembly 3 includes a valve box 19, a plunger 18, a clamp 17, etc.
  • the hydraulic end assembly 3 connects the plunger 18 and the tie rod 13 together through the clamp 17, and uses a long screw 15 and a nut 16 to connect the plunger 18 and the tie rod 13 together. It is fixed on the spacer frame 14, and the long screw 15 is connected to the power end housing 5 through threads.
  • the stroke of the five-cylinder plunger pump with the integral power end structure is 11 inches.
  • the long-stroke design is very suitable for the current shale gas fracturing zipper operation requirements, reducing the number of wellsite equipment and improving operation efficiency and economy.
  • the reduction gearbox assembly 2 includes a planetary-stage reduction gearbox 31 and a parallel-stage reduction gearbox 30.
  • One end of the planetary-stage reduction gearbox 31 is connected to the power end assembly 1, and the other end of the planetary-stage reduction gearbox 31 is connected to the parallel-stage reduction gearbox.
  • the gearbox 30 is connected, and the two-stage deceleration of the gearbox assembly 2 is realized through the planetary gearbox 31 and the parallel-stage gearbox 30, and the reduction ratio is 8:1-15:1.
  • the parallel-stage reduction gearbox 30 includes a large gear 36 and a small gear 37 to perform one-stage reduction; the planetary-stage reduction gearbox 31 is composed of an inner ring gear 32, four planet gears 33, a sun gear 34, and a planet carrier 35 to form a planetary gear mechanism. Two-stage deceleration.
  • the sun gear 34 is located at the center of the planetary gear mechanism, meshes with the planet gear 33 and is coaxial with the large gear 36 of the parallel-stage reduction box 30.
  • the driving flange 4 is connected with an external power source to drive the input shaft to rotate, and is transmitted to the large gear 36 through the pinion 37 to achieve a one-stage reduction, and is transmitted to the sun gear 34 through the large gear 36, and the sun gear 34 drives the planet carrier 35 through the planet gear 33
  • the two-stage deceleration is realized, and the power is finally transmitted to the crankshaft 6 through the spline 38.
  • a large transmission ratio can be obtained through the two-stage speed change, which effectively reduces the input torque and reduces the stroke frequency of the pump.
  • the external power or speed drives the gearbox assembly 2 to rotate through the drive flange 4, and the power and torque are transmitted to the crankshaft 6 through the spline 38 through the secondary speed change.
  • the crankshaft 6 and the bearing 7 rotate in the power end housing 5 , Driving the connecting rod body 9, the crosshead 11, and the tie rod 13 to move, transforming the rotary motion of the crankshaft 6 into the reciprocating linear motion of the tie rod 13.
  • the tie rod 13 drives the plunger 18 through the clamp 17 to reciprocate in the valve box 19, thereby Realize the suction of low-pressure liquid and discharge of high-pressure liquid, and realize the pumping of liquid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

La présente invention concerne une pompe à piston plongeur à cinq cylindres de support à points multiples comprenant un ensemble extrémité de puissance (1), un ensemble extrémité hydraulique (3) et un ensemble réducteur (2). L'ensemble extrémité de puissance comprend un corps de carter de vilebrequin, un corps de boîtier de bossage de piston et un cadre d'espacement (14) ; le corps de carter de vilebrequin, le corps de boîtier de bossage de piston et le cadre d'espacement sont raccordés les uns à la suite des autres ; l'ensemble extrémité hydraulique est fixé au cadre d'espacement ; l'ensemble réducteur est fixé au corps de carter de vilebrequin ; un corps de support de vilebrequin (20) est disposé au fond du corps de carter de vilebrequin, le corps de support de vilebrequin étant utilisé pour supporter le corps de carter de vilebrequin ; un corps de support de bossage de piston (21) est agencé au fond du corps de boîtier de bossage de piston, le corps de support de bossage de piston étant utilisé pour supporter le corps de boîtier de bossage de piston ; et un corps de support hydraulique (22) est disposé au fond du cadre d'espacement, le corps de support hydraulique étant utilisé pour supporter l'ensemble extrémité hydraulique. Au moyen de la conception de support à points multiples du corps de carter de vilebrequin, du corps de boîtier de bossage de piston et de l'ensemble extrémité hydraulique, la résistance de support de la pompe à piston plongeur peut être améliorée, la vibration est réduite, un fonctionnement à charge élevée est mieux garanti, et le fonctionnement est plus stable.
PCT/CN2019/113975 2019-10-29 2019-10-29 Pompe à piston plongeur à cinq cylindres de support à points multiples WO2021081750A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/113975 WO2021081750A1 (fr) 2019-10-29 2019-10-29 Pompe à piston plongeur à cinq cylindres de support à points multiples

Applications Claiming Priority (1)

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PCT/CN2019/113975 WO2021081750A1 (fr) 2019-10-29 2019-10-29 Pompe à piston plongeur à cinq cylindres de support à points multiples

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0849647A (ja) * 1994-08-08 1996-02-20 Niigata Uoshinton Kk 竪型プランジャーポンプ
CN104675652A (zh) * 2015-02-25 2015-06-03 大连汇博泵业有限公司 一种高效节能往复泵
CN105545622A (zh) * 2016-02-26 2016-05-04 中石化石油工程机械有限公司第四机械厂 一种大功率长冲程五缸柱塞泵
CN106481540A (zh) * 2016-12-07 2017-03-08 宁波合力机泵股份有限公司 一种柱塞泵动力端
CN106593848A (zh) * 2016-12-07 2017-04-26 宁波合力机泵股份有限公司 一种柱塞泵动力端
CN107076139A (zh) * 2014-07-25 2017-08-18 S.P.M.流量控制股份有限公司 用于往复泵的动力端框架组件
CN109869294A (zh) * 2019-04-19 2019-06-11 烟台杰瑞石油装备技术有限公司 一种超大功率五缸柱塞泵

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0849647A (ja) * 1994-08-08 1996-02-20 Niigata Uoshinton Kk 竪型プランジャーポンプ
CN107076139A (zh) * 2014-07-25 2017-08-18 S.P.M.流量控制股份有限公司 用于往复泵的动力端框架组件
CN104675652A (zh) * 2015-02-25 2015-06-03 大连汇博泵业有限公司 一种高效节能往复泵
CN105545622A (zh) * 2016-02-26 2016-05-04 中石化石油工程机械有限公司第四机械厂 一种大功率长冲程五缸柱塞泵
CN106481540A (zh) * 2016-12-07 2017-03-08 宁波合力机泵股份有限公司 一种柱塞泵动力端
CN106593848A (zh) * 2016-12-07 2017-04-26 宁波合力机泵股份有限公司 一种柱塞泵动力端
CN109869294A (zh) * 2019-04-19 2019-06-11 烟台杰瑞石油装备技术有限公司 一种超大功率五缸柱塞泵

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