CN110454352B - Linear motor driving type plunger pump - Google Patents
Linear motor driving type plunger pump Download PDFInfo
- Publication number
- CN110454352B CN110454352B CN201910797891.0A CN201910797891A CN110454352B CN 110454352 B CN110454352 B CN 110454352B CN 201910797891 A CN201910797891 A CN 201910797891A CN 110454352 B CN110454352 B CN 110454352B
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- Prior art keywords
- valve box
- plunger
- linear motor
- cylinder
- plunger pump
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- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 230000007547 defect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a linear motor driven plunger pump, which is characterized in that the plunger pump is driven by a linear motor, and the motion rule of a component is controlled by controlling the motion rule of the linear motor, so that the defects of the conventional plunger pump are overcome, and the advantages of the plunger pump are furthest exerted.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to a linear motor driven plunger pump.
Background
The traditional plunger pump generally changes the rotary motion of a prime motor into the linear reciprocating motion of a plunger through a crank-link mechanism, so that liquid is intermittently sucked into a pump cylinder and discharged from a pipeline under high pressure to achieve the purpose of conveying the liquid. The rotary drive type plunger pump has the following problems: the traditional rotary driving plunger pump has more intermediate transmission links, large friction and abrasion and low system efficiency; the structure is complex, the manufacturing and processing difficulty is high, the cost is high, the number of vulnerable parts is large, the probability of failure is high, and the maintenance is inconvenient; the variation amplitude of the plunger speed is large, the fluctuation of the displacement of the plunger pump is large, and the discharge pressure is unstable; the structure of the power end of the traditional crankshaft connecting rod is limited, and the operation requirements of long stroke, low stroke frequency and large displacement are difficult to realize; the structure is complex, the friction and abrasion are large, the pressure fluctuation is large, the service life of the vulnerable part is low, and the vibration noise is serious during operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the linear motor driven plunger pump, wherein the linear motor is used for driving the plunger pump, and the motion rule of the assembly is controlled by controlling the motion rule of the linear motor, so that the defects of the conventional plunger pump are overcome, and the advantages of the plunger pump are furthest exerted.
The aim of the invention is achieved by the following technical measures: the utility model provides a linear electric motor driven plunger pump, includes linear electric motor and fluid end assembly, linear electric motor is connected with the fluid end assembly, and the fluid end assembly includes plunger, valve box, goes up valve body and lower valve body, it has plunger hole, suction port and discharge port to open on the valve box, the plunger is established in the plunger hole, go up valve body sealing mounting in the discharge port, lower valve body sealing mounting in the suction port, linear electric motor driven plunger is the straight line reciprocating motion in valve box plunger downthehole, linear electric motor passes through the connection assembly and is connected with fluid end assembly plunger.
Further, the connection assembly comprises a plunger connecting piece, a supporting rod and a rotor connecting piece, one end of the supporting rod is connected with the plunger connecting piece, the other end of the supporting rod is connected with the rotor connecting piece, the other end of the plunger connecting piece is connected with the plunger, and the other end of the rotor connecting piece is connected with a rotor of the linear motor.
Further, the linear motor is a single-acting linear motor.
Further, the valve box is a single-cylinder combined valve box or a multi-cylinder valve box.
Further, the single-cylinder combined valve box comprises 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, each cylinder of the single-cylinder combined 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 mounted in the discharge hole in a sealing manner, and the lower valve body is mounted in the suction hole in a sealing manner.
Further, the multi-cylinder valve box comprises 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, a plunger hole, a suction hole and a discharge hole are formed in each cylinder of the multi-cylinder valve box, the plunger is arranged in the plunger hole, the upper valve body is mounted in the discharge hole in a sealing mode, and the lower valve body is mounted in the suction hole in a sealing mode.
Compared with the prior art, the invention has the beneficial effects that: the problem of traditional plunger pump is solved, and linear motor can directly convert the electric energy into linear motion's mechanical energy, has saved the intermediate transfer link, and frictional wear reduces, and the system is efficient, has simple structure, contactless motion, noise are low, maintenance convenience, reliability height, longe-lived, can satisfy advantages such as operation requirement of long stroke, low stroke frequency, large discharge capacity.
The invention is described in detail below with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic view of a fluid end assembly of the present invention;
FIG. 2 is a schematic diagram of a single-acting linear motor driven plunger pump according to the present invention;
FIG. 3 is a schematic view showing a combination structure of a five-cylinder combined valve box in embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of a combination of five cylinder valve boxes according to embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of a dual-acting linear motor driven plunger pump of the present invention;
FIG. 6 is a schematic diagram of a combination of five cylinder valve boxes according to embodiment 2 of the present invention;
FIG. 7 is a schematic view showing a combination structure of a five-cylinder combined valve box in embodiment 2 of the present invention;
FIG. 8 is a schematic diagram of a single-acting plunger pump of the present invention driving two fluid end assemblies;
FIG. 9 is a schematic view showing a combination structure of a five-cylinder combined valve box in embodiment 5 of the present invention;
FIG. 10 is a schematic diagram showing a combination of five cylinder valve cases in embodiment 6 of the present invention;
The valve comprises a single-acting linear motor, a plunger, a valve box, a single-cylinder combined valve box, a multi-cylinder valve box, a discharge hole, a suction hole, a plunger connecting piece, a support rod, a plunger connecting piece, a double-acting linear motor, a plunger connecting piece, a support rod and a double-acting linear motor.
Detailed Description
As shown in fig. 1 to 10, a linear motor driven plunger pump comprises a linear motor and a hydraulic end assembly, wherein the linear motor is a single-acting linear motor 1 or a double-acting linear motor 9, the linear motor is connected with the hydraulic end assembly, the hydraulic end assembly comprises a plunger 2, a valve box 3, an upper valve body 4 and a lower valve body 5, and 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 comprises 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 housing 3 is provided with a plunger hole 35, a suction hole 34 and a discharge hole 33, the plunger 2 is arranged in the plunger hole 35, the upper valve body 4 is sealed and mounted in the discharge hole 33, and the lower valve body 5 is sealed and mounted in the suction hole 34. The linear motor drives the plunger 2 to do linear reciprocating motion in the plunger hole 35 of the valve box 3, thereby realizing the suction and discharge of liquid and pumping operation. The structure is simple, the maintenance is convenient, compared with the traditional crankshaft and connecting rod cross head plunger pump, the linear motor drives the plunger pump, the intermediate conversion mechanism for converting rotary motion into linear motion is omitted, the whole structure is greatly simplified, the cost is saved, the volume is reduced, and the maintenance of the plunger pump is more convenient. The transmission rigidity is high, the direct driving is realized, the hysteresis phenomenon caused by elastic deformation, friction abrasion and reverse clearance of an intermediate transmission link during starting, speed changing and reversing is avoided, and the transmission rigidity is greatly improved; the stroke length is not limited, the linear motor is utilized for driving, the plunger stroke can be set according to the requirement, the long stroke, the large displacement, the low sprint and the high pressure of the reciprocating pump can be realized, and the service lives of a valve box, a plunger, a valve and a sealing element of the reciprocating pump are greatly prolonged; the efficiency is high, the response is fast, the influence of inertia and resistance of the intermediate transmission mechanism is avoided because of no intermediate transmission link, the energy loss during mechanical friction is eliminated, the transmission efficiency is improved, the direct transmission reaction speed of the linear motor is fast, the sensitivity is high, the follow-up performance is good, and the accuracy is high; the mechanical friction of the components is eliminated, the noise is greatly reduced during the movement, and the current situation that the working noise of the existing equipment is large is improved; the linear motor can be connected in parallel, the total thrust is equal to the sum of the thrust of all the motors when the linear motors work, the linear motors do not interfere with each other, the problems of unbalanced load and the like when the linear motors are used together are solved, the assembly flexibility is high, and different working conditions and different installation requirements can be met.
The connection mode of the linear motor and the hydraulic end assembly can be generally divided into the following two modes: the rotor of the linear motor is directly connected with the plunger 2 in the hydraulic end assembly or the rotor of the linear motor is connected with the plunger 2 in the hydraulic end assembly through the connecting assembly.
The connecting assembly comprises a plunger connecting piece 6, a supporting rod 7 and a rotor connecting piece 8, one end of the supporting rod 7 is connected with the plunger connecting piece 6, the other end of the supporting rod 7 is connected with the rotor connecting piece 8, the other end of the plunger connecting piece 6 is connected with the plunger 2, and the other end of the rotor connecting piece 8 is connected with 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 driving plunger pump implementation columns.
Example 1
The linear motor driving type plunger pump comprises a single-acting linear motor 1, plungers 2, a multi-cylinder valve box 32, an upper valve body 4 and a lower valve body 5, wherein the movers of the single-acting linear motor 1 are directly connected with the plungers 2, the movers of each linear motor independently drive one plunger 2, 2-7 linear motors can be adopted for combination in the embodiment, and the number of valve boxes 3 of the multi-cylinder valve box 32 is the same as that of the linear motors.
Example 2
The linear motor driven plunger pump comprises single-acting linear motors 1, plungers 2, single-cylinder combined valve boxes 31, upper valve bodies 4 and lower valve bodies 5, wherein the linear motors are directly connected with the plungers 2, each linear motor is independently driven by a rotor of each linear motor, 2-7 single-acting linear motors 1 can be combined according to requirements, and the number of valve boxes 3 of the single-cylinder combined valve boxes 31 is the same as that of the single-acting linear motors 1.
Example 3
The linear motor driven plunger pump comprises double-acting linear motors 9, plungers 2, a single-cylinder combined valve box 31, an upper valve body 4 and a lower valve body 5, wherein the left end and the right end of a rotor of each double-acting linear motor 9 are respectively and directly connected with one plunger 2, each double-acting linear motor 9 alternately drives the plungers 2 on the left side and the right side, 1-4 double-acting linear motors 9 can be adopted for combination according to requirements, and the number of valve boxes 3 of the single-cylinder combined valve box 31 is twice the number of the double-acting linear motors 9.
Example 4
The linear motor driven plunger pump comprises double-acting linear motors 9, plungers 2, multi-cylinder valve boxes 32, an upper valve body 4 and a lower valve body 5, wherein the left end and the right end of a rotor of each double-acting linear motor 9 are respectively and directly connected with one plunger 2, each double-acting linear motor 9 alternately drives the plungers 2 on the left side and the right side, 1-4 double-acting linear motors 9 can be adopted for combination according to requirements, and the number of valve boxes 3 of each multi-cylinder valve box 32 is twice the number of the double-acting linear motors 9.
Example 5
The linear motor driving type plunger pump comprises a single-acting linear motor 1, plungers 2, a multi-cylinder valve box 32, an upper valve body 4 and a lower valve body 5, wherein the rotor of the single-acting linear motor 1 is connected with the plungers 2 in a hydraulic end assembly through a connecting assembly, the left side and the right side of a plunger connecting piece 6 in the connecting assembly are respectively connected with one plunger 2, a rotor connecting piece 8 in the connecting assembly is connected with the rotor of the single-acting linear motor 1, the connecting assembly is driven to move left and right through the reciprocating motion of the single-acting linear motor 1, the plungers 2 on the left side and the right side are driven alternately, 1-7 single-acting linear motors 1 can be adopted for combination according to requirements, and the number of the valve boxes 3 of the multi-cylinder valve box 32 is twice the number of the single-acting linear motor 1.
EXAMPLE 6
The linear motor driving type plunger pump comprises a single-acting linear motor 1, plungers 2, a single-cylinder combined valve box 31, an upper valve body 4 and a lower valve body 5, wherein the single-acting linear motor 1 rotor is connected with the plungers 2 in the hydraulic end assembly through a connecting assembly, the left side and the right side of a plunger connecting piece 6 in the connecting assembly are respectively connected with one plunger 2, a rotor connecting piece 8 in the connecting assembly is connected with the single-acting linear motor 1 rotor, the connecting assembly is driven to move left and right through the reciprocating motion of the single-acting linear motor 1, the plungers 2 on the left side and the right side are driven alternately, 1-7 single-acting linear motors 1 can be adopted for combination according to requirements, and the number of the valve boxes 3 of the single-cylinder combined valve box 31 is twice the number of double-acting linear motors 9.
The linear motor includes, but is not limited to: direct current linear motor, alternating current linear motor, linear asynchronous motor, linear synchronous motor, linear stepping motor.
It will be appreciated by persons skilled in the art that the overall technology of the invention is not limited by the foregoing embodiments, and that the above embodiments and descriptions are merely illustrative of the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A linear motor driven plunger pump is characterized in that: the hydraulic end assembly comprises a plunger, a valve box, an upper valve body and a lower valve body, wherein 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 hermetically arranged in the discharge hole, the lower valve body is hermetically arranged in the suction hole, the plunger is driven by the linear motor to do linear reciprocating motion in the valve box plunger hole, and the linear motor is connected with the hydraulic end assembly plunger through the connecting assembly; the connecting assembly comprises a plunger connecting piece, a supporting rod and a rotor connecting piece, one end of the supporting rod is connected with the plunger connecting piece, the other end of the supporting rod is connected with the rotor connecting piece, the other end of the plunger connecting piece is connected with the plunger, and the other end of the rotor connecting piece is connected with a rotor of the linear motor; the left side and the right side of the plunger connecting piece in the connecting assembly are respectively connected with a plunger; the linear motor is a single-action linear motor.
2. The linear motor driven plunger pump according to claim 1, wherein: the valve box is a single-cylinder combined valve box or a multi-cylinder valve box.
3. The linear motor driven plunger pump according to claim 2, wherein: the single-cylinder combined valve box comprises 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.
4. A linear motor driven plunger pump as set forth in claim 3, wherein: the multi-cylinder valve box comprises 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910797891.0A CN110454352B (en) | 2019-08-27 | 2019-08-27 | Linear motor driving type plunger pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910797891.0A CN110454352B (en) | 2019-08-27 | 2019-08-27 | Linear motor driving type plunger pump |
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| CN110454352A CN110454352A (en) | 2019-11-15 |
| CN110454352B true CN110454352B (en) | 2024-07-09 |
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| CN212003481U (en) * | 2019-08-27 | 2020-11-24 | 烟台杰瑞石油装备技术有限公司 | Linear motor drive type plunger pump |
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