CN112503153A - Device and method for realizing reciprocating motion of fracturing pump through rotation of lead screw nut - Google Patents
Device and method for realizing reciprocating motion of fracturing pump through rotation of lead screw nut Download PDFInfo
- Publication number
- CN112503153A CN112503153A CN202011279169.7A CN202011279169A CN112503153A CN 112503153 A CN112503153 A CN 112503153A CN 202011279169 A CN202011279169 A CN 202011279169A CN 112503153 A CN112503153 A CN 112503153A
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- Prior art keywords
- lead screw
- nut
- gear
- brake
- screw nut
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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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
- 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
Abstract
The invention discloses a device and a method for realizing reciprocating motion of a fracturing pump through rotation of a screw nut. The invention has the beneficial effects that: by reducing the moment of inertia in commutation, the commutation impact is smaller in the case of driving a constant rotational speed.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a device and a method for realizing reciprocating motion of a fracturing pump through rotation of a feed screw nut.
Background
The fracturing pump is a machine for conveying fluid or pressurizing fluid, which transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, in the petroleum drilling and production equipment, the fracturing pump belongs to a more important class of equipment, most of the fracturing pumps used in current oil fields are single-acting reciprocating fracturing pumps, the power transmission mode of the fracturing pump in this form is as follows: the motor is driven by a chain or a belt to transmit power to the transmission shaft, then a gear of the transmission shaft is meshed with a large gear ring on the crankshaft to drive the crankshaft to rotate, the power loss is large, the structure is slightly complex, and equal phase angle difference exists among cranks, so that large vibration exists in the running process of the fracturing pump.
The following two common ways of reciprocating a common ball screw are used:
1. do positive and negative raceway on the lead screw, and then control lead screw or lead screw nut's positive and negative rotation to reach ball reciprocating motion's purpose, the shortcoming of this kind of mode lies in: due to the existence of the positive and negative roller paths, the thrust is reduced, and meanwhile, if the lead screw or the nut always keeps constant-speed rotation, the two ends of the roller paths can bear very large impact, so that the service life of the ball screw is greatly reduced.
2. The positive and negative rotation of the driving motor is directly controlled, the motor drives the lead screw (or the lead screw nut) directly through a rotation transmission device, and therefore the purpose of reciprocating motion of the ball screw is achieved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and a method for realizing reciprocating motion of a fracturing pump through rotation of a feed screw nut.
The purpose of the invention is realized by the following technical scheme: the device comprises a brake B, a gear C, a screw nut B, a motor and a screw B, wherein the gear C is connected with a power output end of the motor, the gear C is meshed with the gear B, the screw nut B is sleeved on the screw B, the gear B is sleeved on the screw nut B, and the brake B is matched with the screw nut B.
Preferably, still include gear A, lead screw A, screw-nut A and brake A, gear A cover is on screw-nut A, screw-nut A suit is on screw-nut A, brake A and screw-nut A cooperation, gear A and gear B meshing, screw-nut A and screw-nut B rotate simultaneously, and direction of rotation is opposite, and under the irrotational condition of screw-nut, screw-nut can be simultaneously to a direction linear motion, and gear A and gear B guarantee that screw-nut rotational speed is unanimous.
Preferably, the brake A and the screw nut A are coaxially mounted, and the brake B and the screw nut B are coaxially mounted.
Preferably, the brake A and the screw nut A are mounted in a different shaft mode, the brake B and the screw nut B are mounted in a different shaft mode, and the brake A and the brake B are respectively meshed with gears on the screw nut A and the screw nut B through gears.
A method for realizing reciprocating motion of a fracturing pump through rotation of a feed screw nut comprises the following steps:
s, closing a brake B, not rotating a screw rod nut B, and pushing the screw rod B to advance by the rotation of the screw rod B;
s, the brake B is loosened, the motor does not operate and can be driven reversely by the gear C, the lead screw nut B can rotate along with the lead screw B, so that the linear direction of the lead screw nut B is decelerated, and when the rotating speed of the lead screw nut B is the same as that of the lead screw B, the lead screw nut B does not move in the linear direction;
and S, the brake B is loosened, the motor drives the gear C to rotate, the gear C drives the gear B to rotate, the rotation direction of the screw rod nut B is consistent with the rotation direction of the coaxial screw rod B, when the rotation speed of the screw rod nut B is higher than that of the screw rod B, the screw rod nut B moves linearly in the reverse direction, and the linear motion of the screw rod nut B drives the piston of the fracturing pump to move linearly in a reciprocating mode.
Preferably, the reciprocating component is a piston or plunger.
The invention has the following advantages: by reducing the moment of inertia in commutation, the commutation impact is smaller in the case of driving a constant rotational speed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram I of the structure of the present invention;
in the figure, 1-brake A, 2-gear A, 3-screw nut A, 4-gear B, 5-gear C, 6-motor, 7-screw nut B, 8-brake B, 9-screw A, 10-screw B.
Detailed Description
To further clarify the technical measures and effects of the present invention adopted to achieve the intended advantages of the present invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments of the present invention. In the following description, different "one embodiment" or "an embodiment" may not necessarily refer to the same embodiment, and furthermore, particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments:
as shown in figure 1, the device and the method for realizing reciprocating motion of the fracturing pump through rotation of the lead screw nut comprise a brake B8, a gear B4, a gear C5, a lead screw nut B7, a motor 6 and a lead screw B10, wherein the gear C5 is connected with a power output end of the motor 6, the gear C5 is meshed with the gear B4, the lead screw nut B7 is sleeved on a lead screw B10, the gear B4 is sleeved on a lead screw nut B7, and the brake B8 is matched with a lead screw nut B7.
As an optional implementation mode, the brake device further comprises a gear A2, a lead screw A9, a lead screw nut A3 and a brake A1, wherein the gear A2 is sleeved on the lead screw nut A3, the lead screw nut A3 is sleeved on the lead screw A9, the brake A1 is matched with the lead screw nut A3, the gear A2 is meshed with the gear B4, the lead screw A9 and the lead screw B10 rotate simultaneously, the rotation directions are opposite, when the lead screw nut does not rotate, the lead screw nut can do linear motion to one direction at the same time, and the gear A2 and the gear B4 guarantee that the rotation speeds of the lead screw nut are consistent.
In an alternative embodiment, the brake A1 is coaxially mounted with the lead screw nut A3, and the brake B8 is coaxially mounted with the lead screw nut B7.
In an alternative embodiment, the brake a1 is not mounted coaxially with the lead screw nut A3, the brake B8 is mounted coaxially with the lead screw nut B7, and the brake a1 and the brake B8 are respectively engaged with gears on the lead screw nut A3 and the lead screw nut B7 through gears.
In an alternative embodiment, the reciprocating element is a piston or plunger.
Specific example 1:
as shown in fig. 1:
s1, a brake B8 is closed, the lead screw nut B7 does not rotate, and the lead screw B10 is pushed to advance by rotation of the lead screw B10;
s2 and a brake B8 are loosened, the motor 6 does not operate and can be driven reversely by a gear C5, the lead screw nut B7 can rotate along with the lead screw B10 to enable the lead screw nut B7 to decelerate in the linear direction, and when the rotating speed of the lead screw nut B7 is the same as that of the lead screw B10, the lead screw nut B7 does not move in the linear direction;
s3 and a brake B8 are loosened, the motor 6 drives the gear C5 to rotate, the gear C drives the gear B to rotate, the rotation direction of the lead screw nut B7 is consistent with the rotation direction of the coaxial lead screw B10, when the rotating speed of the lead screw nut B7 is higher than that of the lead screw B10, the lead screw nut B7 moves linearly in the reverse direction, and the linear motion of the lead screw nut B7 drives the piston of the fracturing pump to move linearly in a reciprocating mode.
As an alternative embodiment, during the opening and closing of brake A1 and brake B8, the brakes are opened when moving in a forward direction and closed when moving in a reverse direction.
Specific example 2:
as shown in fig. 2:
s1, a brake A1 and a brake B8 are closed, the lead screw nut A3 and the lead screw nut B7 do not rotate, and the lead screw is pushed to advance by the rotation of the lead screw A9 and the lead screw B7;
s2, a brake A1 and a brake B8 are loosened, if the motor 6 does not operate and can be driven reversely by the gear C5, under the ideal condition, the lead screw nut can rotate along with the lead screw until the rotating speed is the same as that of the lead screw, so that the linear direction of the lead screw nut is decelerated, and when the rotating speed of the lead screw nut is the same as that of the lead screw, the lead screw nut does not move in the linear direction;
s3, a brake A1 and a brake B8 are loosened, the motor 6 drives the gear C5 to rotate, then drives the gear A2 and the gear B4 to rotate, the rotation direction of the screw rod nut is consistent with the rotation direction of a coaxial screw rod, when the rotation speed of the screw rod nut is higher than that of the screw rod, the screw rod nut moves in a reverse linear mode, and the linear motion of the screw rod nut drives a piston of the fracturing pump to move in a linear reciprocating mode.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification as long as they are protected by patent laws within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a device that realizes fracturing pump reciprocating motion through screw-nut is rotatory which characterized in that: including brake B (8), gear B (4), gear C (5), screw-nut B (7), motor (6) and lead screw B (10), gear C (5) are connected with the power take off of motor (6), gear C (5) and gear B (4) meshing, screw-nut B (7) suit is on lead screw B (10), gear B (4) cover is on screw-nut B (7), brake B (8) and screw-nut B (7) cooperation.
2. The device for realizing the reciprocating motion of the fracturing pump through the rotation of the feed screw nut as claimed in claim 1, wherein: still include gear A, lead screw A, screw-nut A and brake A, gear A (2) cover is on screw-nut A (3), screw-nut A (3) suit is on lead screw A (9), brake A (1) and screw-nut A (3) cooperation, gear A (2) and gear B (4) meshing.
3. The device for realizing the reciprocating motion of the fracturing pump through the rotation of the feed screw nut is characterized in that: the brake A (1) and the screw nut A (3) are coaxially arranged, and the brake B (8) and the screw nut B (7) are coaxially arranged.
4. The device for realizing the reciprocating motion of the fracturing pump through the rotation of the feed screw nut as claimed in claim 1, wherein: brake A (1) and lead screw nut A (3) different shaft installation, brake B (8) and lead screw nut B (7) different shaft installation, brake A (1) and brake B (8) respectively through the gear respectively with the lead screw nut A (3) with lead screw nut B (7) on the gear mesh mutually.
5. The device for realizing the reciprocating motion of the fracturing pump through the rotation of the feed screw nut as claimed in claim 1, wherein: the number of the gears A (2) and the gears B (4) can be multiple.
6. A method for realizing reciprocating motion of a fracturing pump through rotation of a feed screw nut is characterized in that: the method comprises the following steps:
s1, closing a brake B (8), keeping a lead screw nut B (7) against rotating, and pushing a lead screw B (10) to advance by the rotation of the lead screw B (10);
s2, a brake B (8) is loosened, the motor (6) does not operate and can be driven reversely by the gear C (5), the lead screw nut B (7) can rotate along with the lead screw B (10) to reduce the linear direction of the lead screw nut B (7), and when the rotating speed of the lead screw nut B (7) is the same as that of the lead screw B (10), the lead screw nut B (7) does not move in the linear direction;
s3 and a brake B (8) are loosened, a motor (6) drives a gear C (5) to rotate, the gear C drives the gear B to rotate, a lead screw nut B (7) turns to the direction consistent with the rotating direction of a coaxial lead screw B (10), when the rotating speed of the lead screw nut B (7) is higher than that of the lead screw B (10), the lead screw nut B (7) moves in a reverse linear mode, and the linear motion of the lead screw nut B (7) drives a reciprocating motion assembly of the fracturing pump to move in a linear reciprocating mode.
7. The method for achieving reciprocating motion of the fracturing pump through rotation of the feed screw nut as claimed in claim 6, wherein: the reciprocating component is a piston or a plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279169.7A CN112503153A (en) | 2020-11-16 | 2020-11-16 | Device and method for realizing reciprocating motion of fracturing pump through rotation of lead screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279169.7A CN112503153A (en) | 2020-11-16 | 2020-11-16 | Device and method for realizing reciprocating motion of fracturing pump through rotation of lead screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112503153A true CN112503153A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011279169.7A Pending CN112503153A (en) | 2020-11-16 | 2020-11-16 | Device and method for realizing reciprocating motion of fracturing pump through rotation of lead screw nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112503153A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1557964A (en) * | 1976-05-28 | 1979-12-19 | Cotton Ltd W | Flat bed or straight bar knitting machines having lead screw control |
| CN1061267A (en) * | 1991-11-22 | 1992-05-20 | 浙江大学 | Positive and negative rotation hold concurrently reciprocating device and stirrer |
| CN102518770A (en) * | 2011-09-16 | 2012-06-27 | 田雷 | Variable-radius continuously variable transmission |
| CN110645274A (en) * | 2019-09-29 | 2020-01-03 | 天津津航计算技术研究所 | Gear-driven gapless high-rigidity linear actuator |
| CN214999210U (en) * | 2020-11-16 | 2021-12-03 | 四川宏华电气有限责任公司 | Device for realizing reciprocating motion of fracturing pump through rotation of screw rod nut |
-
2020
- 2020-11-16 CN CN202011279169.7A patent/CN112503153A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1557964A (en) * | 1976-05-28 | 1979-12-19 | Cotton Ltd W | Flat bed or straight bar knitting machines having lead screw control |
| CN1061267A (en) * | 1991-11-22 | 1992-05-20 | 浙江大学 | Positive and negative rotation hold concurrently reciprocating device and stirrer |
| CN102518770A (en) * | 2011-09-16 | 2012-06-27 | 田雷 | Variable-radius continuously variable transmission |
| CN110645274A (en) * | 2019-09-29 | 2020-01-03 | 天津津航计算技术研究所 | Gear-driven gapless high-rigidity linear actuator |
| CN214999210U (en) * | 2020-11-16 | 2021-12-03 | 四川宏华电气有限责任公司 | Device for realizing reciprocating motion of fracturing pump through rotation of screw rod nut |
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