WO2021035522A1 - Pompe à piston à moteur linéaire - Google Patents

Pompe à piston à moteur linéaire Download PDF

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Publication number
WO2021035522A1
WO2021035522A1 PCT/CN2019/102786 CN2019102786W WO2021035522A1 WO 2021035522 A1 WO2021035522 A1 WO 2021035522A1 CN 2019102786 W CN2019102786 W CN 2019102786W WO 2021035522 A1 WO2021035522 A1 WO 2021035522A1
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WO
WIPO (PCT)
Prior art keywords
plunger
valve box
linear motor
cylinder
hole
Prior art date
Application number
PCT/CN2019/102786
Other languages
English (en)
Chinese (zh)
Inventor
崔海萍
王继鑫
李海龙
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.)
Filing date
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/CN2019/102786 priority Critical patent/WO2021035522A1/fr
Publication of WO2021035522A1 publication Critical patent/WO2021035522A1/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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to the technical field of plunger pumps, in particular to a linear motor plunger pump.
  • Traditional plunger pumps generally convert the rotary motion of the prime mover into linear reciprocating motion of the plunger through a crank connecting rod mechanism, so that the liquid is intermittently sucked into the pump cylinder and discharged out of the pipeline at high pressure to achieve the purpose of conveying liquid.
  • This kind of rotary drive plunger pump has the following problems: the traditional rotary drive plunger pump has many intermediate transmission links, high friction and wear, and low system efficiency; complex structure, difficult manufacturing and processing, high cost, many vulnerable parts, and failure It is difficult to maintain and maintain; the plunger speed varies greatly, the displacement of the plunger pump fluctuates, and the discharge pressure is unstable; limited by the structure of the power end of the traditional crankshaft connecting rod, it is difficult to achieve long stroke, low stroke, and large displacement. High-quantity operation requirements; complex structure, large friction and wear, large pressure fluctuations, resulting in low life of wearing parts, and serious vibration and noise during operation.
  • the purpose of the present invention overcomes the shortcomings of the prior art and provides a linear motor plunger pump, which drives the plunger pump through a linear motor, and controls the movement law of components by controlling the movement law of the linear motor, thereby overcoming the current plunger pump
  • the shortcomings maximize the advantages of the plunger pump.
  • a linear motor plunger pump including a linear motor and a hydraulic end assembly
  • the linear motor is connected to the hydraulic end assembly
  • the hydraulic end assembly includes a plunger , A valve box, an upper valve body and a lower valve body
  • the valve box is provided with a plunger hole, a suction hole and a discharge hole
  • the plunger is arranged in the plunger hole
  • the upper valve body is sealingly mounted on the In the discharge hole
  • the lower valve body is sealed and installed in the suction hole
  • the linear motor drives the plunger to make linear reciprocating motion in the valve box plunger hole
  • the linear motor is a single-acting linear motor.
  • valve box is a single-cylinder combined valve box or a multi-cylinder valve box.
  • the single-cylinder combined valve box includes a two-cylinder combined valve box, a three-cylinder combined valve box, a four-cylinder combined valve box, a five-cylinder combined valve box, a six-cylinder combined valve box, and a seven-cylinder combined valve box.
  • a plunger hole, a suction hole and a discharge hole are opened on each cylinder of the single-cylinder combined valve box, the plunger is arranged in the plunger hole, and the upper valve body is sealed and mounted on the In the discharge hole, the lower valve body is sealed and installed in the suction hole.
  • the multi-cylinder valve box includes a two-cylinder valve box, a three-cylinder valve box, a four-cylinder valve box, a five-cylinder valve box, a six-cylinder valve box, and a seven-cylinder valve box.
  • Each cylinder of the multi-cylinder valve box The upper part is provided with a plunger hole, a suction hole and a discharge hole, the plunger is arranged in the plunger hole, the upper valve body is sealed and installed in the discharge hole, and the lower valve body is sealed and installed with the suction hole.
  • linear motor is directly connected with the plunger of the hydraulic end assembly.
  • the beneficial effects of the present invention are: to solve the problem of the traditional plunger pump, the linear motor can directly convert the electrical energy into the mechanical energy of linear motion, omit the intermediate transmission link, reduce the friction and wear, and the system efficiency is high. , It has the advantages of simple structure, non-contact movement, low noise, convenient maintenance, high reliability, long life, and can meet the operation requirements of long stroke, low stroke and large displacement.
  • Figure 1 is a schematic diagram of the structure of the hydraulic end assembly of the present invention
  • FIG. 2 is a schematic diagram of the structure of a plunger pump driven by a single-acting linear motor of the present invention
  • FIG. 3 is a schematic diagram of the combined structure of the five-cylinder combined valve box in the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the combined structure of the five-cylinder valve box in the first embodiment of the present invention.
  • Figure 5 is a schematic diagram of the structure of a plunger pump driven by a double-acting linear motor of the present invention
  • FIG. 6 is a schematic diagram of the combined structure of the five-cylinder valve box in the second embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the combined structure of the five-cylinder combined valve box in the second embodiment of the present invention.
  • Figure 8 is a schematic view of the structure of the single-acting plunger pump driving two hydraulic end assemblies of the present invention
  • FIG. 9 is a schematic diagram of the combined structure of the five-cylinder combined valve box in the fifth embodiment of the present invention.
  • Figure 10 is a schematic diagram of the combined structure of the five-cylinder valve box in the sixth embodiment of the present invention.
  • a linear motor plunger pump includes a linear motor and a hydraulic end assembly.
  • the linear motor is a single-acting linear motor 1 or a double-acting linear motor 9.
  • the end assembly is connected.
  • the hydraulic end assembly includes a plunger 2, a valve box 3, an upper valve body 4 and a lower valve body 5.
  • the valve box 3 is a single-cylinder combined valve box 31 or a multi-cylinder valve box 32.
  • the single-cylinder combined valve box 31 includes a two-cylinder combined valve box, a three-cylinder combined valve box, a four-cylinder combined valve box, a five-cylinder combined valve box, a six-cylinder combined valve box, and a seven-cylinder combined valve. box.
  • the multi-cylinder valve box 32 includes a two-cylinder valve box, a three-cylinder valve box, a four-cylinder valve box, a five-cylinder valve box, a six-cylinder valve box, and a seven-cylinder valve box.
  • Each cylinder of the valve box 3 is provided with a plunger hole 35, a suction hole 34, and a discharge hole 33.
  • the plunger 2 is provided in the plunger hole 35, and the upper valve body 4 is sealed and mounted on the discharge hole.
  • the lower valve body 5 is sealed and installed in the suction hole 34.
  • the linear motor drives the plunger 2 to make a linear reciprocating movement in the plunger hole 35 of the valve box 3, so as to realize the suction and discharge of liquid and realize the pumping operation.
  • the structure is simple and the maintenance is convenient. Compared with the traditional crankshaft and connecting rod crosshead plunger pump, the linear motor drives the plunger pump, eliminating the need for an intermediate conversion mechanism that converts rotary motion to linear motion.
  • the overall structure is greatly simplified and saved The cost, the volume is reduced, and the maintenance of the plunger pump is more convenient.
  • the transmission rigidity is large and it is directly driven, which avoids the hysteresis caused by the elastic deformation, friction and wear and backlash of the intermediate transmission link during starting, shifting and reversing, and greatly improves the transmission rigidity.
  • the stroke length is not limited. It is driven by a linear motor.
  • the plunger stroke can be set according to the needs.
  • the linear motor direct transmission has a fast response speed, high sensitivity, and Good mobility and high accuracy.
  • the mechanical friction of the components is eliminated, the noise during movement is greatly reduced, and the current situation of high noise in existing equipment is improved.
  • Multiple linear motors can be connected in parallel without interfering with each other. When multiple linear motors work, the total thrust is equal to the sum of the thrusts of each motor without interfering with each other. There is no load imbalance when multiple linear motors are used together. The assembly flexibility is large. Meet different working conditions and different installation requirements.
  • connection between the linear motor and the hydraulic end assembly can be roughly divided into the following two types: the mover of the linear motor is directly connected to the plunger 2 in the hydraulic end assembly or the mover of the linear motor is connected to the hydraulic end assembly through the connection assembly. The plunger 2 in the hydraulic end assembly is connected.
  • the connecting assembly includes a plunger connector 6, a support rod 7 and a mover connector 8.
  • One end of the support rod 7 is connected to the plunger connector 6, and the other end of the support rod 7 is connected to the mover connector. 8 is connected, the other end of the plunger connector 6 is connected to the plunger 2, and the other end of the mover connector 8 is connected to the linear motor.
  • the single-acting linear motor 1, the double-acting linear motor 9, the single-cylinder combined valve box 31 and the multi-cylinder valve box 32 are combined to form different linear motor plunger pump implementations.
  • the linear motor plunger pump includes a single-acting linear motor 1, a plunger 2, a multi-cylinder valve box 32, an upper valve body 4, and a lower valve body 5.
  • the mover of the single-acting linear motor 1 is directly connected to the plunger 2.
  • the mover of each linear motor drives a plunger 2 individually.
  • 2-7 linear motors can be used in combination.
  • the number of valve boxes 3 cylinders of the multi-cylinder valve box 32 is the same as the number of linear motors.
  • the linear motor plunger pump includes a single-acting linear motor 1, a plunger 2, a single-cylinder combined valve box 31, an upper valve body 4, and a lower valve body 5.
  • the linear motor is directly connected to the plunger 2, and each linear motor is directly connected to the plunger 2.
  • the mover of the motor drives a plunger 2 individually.
  • 2-7 single-acting linear motors 1 can be combined according to requirements.
  • the single-cylinder combined valve box 31 has 3 valve boxes and 1 single-acting linear motor. The numbers are the same.
  • the linear motor plunger pump includes a double-acting linear motor 9, a plunger 2, a single-cylinder combined valve box 31, an upper valve body 4, and a lower valve body 5.
  • the left and right ends of the mover of the double-acting linear motor 9 are directly connected respectively
  • One plunger 2 each double-acting linear motor 9 alternately drives the plunger 2 on the left and right sides.
  • 1-4 double-acting linear motors 9 can be used for combination according to requirements.
  • the single-cylinder combined valve box 31 is the valve box The number of 3 is twice the number of 9 double-acting linear motors.
  • the linear motor plunger pump includes a double-acting linear motor 9, a plunger 2, a multi-cylinder valve box 32, an upper valve body 4, and a lower valve body 5.
  • the left and right ends of the mover of the double-acting linear motor 9 are respectively directly connected to a column Plug 2, each double-acting linear motor 9 alternately drives the plunger 2 on the left and right sides.
  • This embodiment can be combined with 1-4 double-acting linear motors 9 according to the needs.
  • the number of valve boxes of the multi-cylinder valve box 32 is double Two times the number of 9 linear motors acting.
  • the linear motor plunger pump includes a single-acting linear motor 1, a plunger 2, a multi-cylinder valve box 32, an upper valve body 4, and a lower valve body 5.
  • the mover of the single-acting linear motor 1 is connected to a hydraulic end through a connection assembly
  • the plunger 2 in the assembly is connected.
  • the plunger connector 6 in the connecting assembly is connected to a plunger 2 on the left and right sides.
  • the mover connector 8 in the connecting assembly moves with the single-acting linear motor 1
  • the sub-connection is driven by the reciprocating motion of the single-acting linear motor 1 to drive the connection assembly to move left and right, and then the plunger 2 on the left and right sides can be alternately driven.
  • This embodiment can be combined with 1-7 single-acting linear motors 1 according to the needs, multi-cylinder
  • the number of valve boxes in the valve box 32 is twice the number of single-acting linear motors.
  • the linear motor plunger pump includes a single-acting linear motor 1, a plunger 2, a single-cylinder combined valve box 31, an upper valve body 4, and a lower valve body 5.
  • the plunger 2 in the end assembly is connected, the plunger connecting piece 6 in the connecting assembly is connected to a plunger 2 on the left and right sides, and the mover connecting piece 8 in the connecting assembly is connected to the single-acting linear motor 1
  • the mover is connected.
  • the single-acting linear motor 1 drives the connection assembly to move left and right through the reciprocating motion, so as to alternately drive the plunger 2 on the left and right sides.
  • This embodiment can be combined with 1-7 single-acting linear motors 1 according to requirements.
  • the number of 3 valve boxes of the cylinder combined valve box 31 is twice the number of 9 double-acting linear motors.
  • the linear motors include but are not limited to: DC linear motors, AC linear motors, linear asynchronous motors, linear synchronous motors, linear stepping motors.

Abstract

L'invention concerne une pompe à piston à moteur linéaire, comprenant un moteur linéaire (1) et un ensemble d'extrémité de fluide. Le moteur linéaire (1) est relié à l'ensemble d'extrémité de fluide ; le moteur linéaire (1) est un moteur linéaire à simple action ou double action ; l'ensemble d'extrémité de fluide comprend un piston (2), une boîte de soupape (3), un corps supérieur de soupape (4), et un corps inférieur de soupape (5) ; un trou de piston (35), un trou d'aspiration (34), et un trou d'évacuation (33) sont formés sur la boîte de soupape (3) ; le piston (2) est agencé dans le trou de piston (35) ; le corps supérieur de soupape (4) est monté de manière étanche dans le trou d'évacuation (33) ; le corps inférieur de soupape (5) est monté de manière étanche dans le trou d'aspiration (34) ; le moteur linéaire (1) entraîne le piston (2) pour que celui-ci effectue un mouvement de va-et-vient linéaire dans le trou de piston (35) de la boîte de soupape (3), réalisant ainsi l'aspiration et l'évacuation d'un liquide, et réalisant une opération de pompage. Cette pompe à piston à moteur linéaire possède une structure simple et est pratique à entretenir.
PCT/CN2019/102786 2019-08-27 2019-08-27 Pompe à piston à moteur linéaire WO2021035522A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/102786 WO2021035522A1 (fr) 2019-08-27 2019-08-27 Pompe à piston à moteur linéaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/102786 WO2021035522A1 (fr) 2019-08-27 2019-08-27 Pompe à piston à moteur linéaire

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PCT/CN2019/102786 WO2021035522A1 (fr) 2019-08-27 2019-08-27 Pompe à piston à moteur linéaire

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202040039U (zh) * 2011-04-29 2011-11-16 天津市鹏晟机电设备有限公司 单作用液压驱动往复式柱塞泵
CN102305203A (zh) * 2011-08-16 2012-01-04 北京工业大学 直线电机驱动柱塞泵
JP2016155050A (ja) * 2015-02-23 2016-09-01 株式会社松岡機械製作所 間欠塗工装置
CN106286197A (zh) * 2016-11-09 2017-01-04 北京工业大学 一种多运动单元直线电机驱动式柱塞泵

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202040039U (zh) * 2011-04-29 2011-11-16 天津市鹏晟机电设备有限公司 单作用液压驱动往复式柱塞泵
CN102305203A (zh) * 2011-08-16 2012-01-04 北京工业大学 直线电机驱动柱塞泵
JP2016155050A (ja) * 2015-02-23 2016-09-01 株式会社松岡機械製作所 間欠塗工装置
CN106286197A (zh) * 2016-11-09 2017-01-04 北京工业大学 一种多运动单元直线电机驱动式柱塞泵

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