CN113738636B

CN113738636B - Fracturing pump hydraulic end assembly

Info

Publication number: CN113738636B
Application number: CN202110999389.5A
Authority: CN
Inventors: 王雅东; 梁峰; 郭娟刚
Original assignee: HUBEI PETROKH MACHINE MANUFACTURING CO LTD
Current assignee: HUBEI PETROKH MACHINE MANUFACTURING CO LTD
Priority date: 2021-08-29
Filing date: 2021-08-29
Publication date: 2022-03-29
Anticipated expiration: 2041-08-29
Also published as: CN113738636A

Abstract

The invention provides a fracturing pump hydraulic end assembly, which comprises a shell and a piston pipe, wherein the piston pipe is fixedly arranged on one side of the shell, a cylindrical conveying chamber is arranged in the shell, an inner rotating seat is movably arranged at the bottom of the cylindrical conveying chamber, the fracturing pump hydraulic end assembly is reasonable in design, an inner rotating seat is arranged in the cylindrical conveying chamber, a plurality of uniformly distributed inclined feeding holes are formed in the inner rotating seat, when a piston moves towards the outside of the piston pipe, fracturing fluid enters from a feeding pipe and jacks up the inner rotating seat, the inclined feeding holes are exposed, the fracturing fluid is sprayed into the cylindrical conveying chamber from the inclined feeding holes, under the action of the spraying thrust of the fracturing fluid, the inner rotating seat rotates in a sealed movable bearing, and simultaneously drives a limiting stirring pipe and a limiting stirring rod to rotate, so that the fracturing fluid is stirred, and solid particles in the fracturing fluid can be effectively prevented from settling and accumulating, the uniformity of the fracturing fluid is improved.

Description

Fracturing pump hydraulic end assembly

Technical Field

The invention belongs to the technical field of oilfield equipment putting, and particularly relates to a fracturing pump hydraulic end assembly.

Background

The hydraulic end assembly refers to the general names of all parts and components of the fracturing pump, which are in contact with a conveying medium, and generally refers to all parts and components included from a piston (plunger) to an inlet flange and an outlet flange, when the hydraulic end assembly of the fracturing pump conveys fracturing fluid, solid particles in the fracturing fluid are likely to be deposited in the hydraulic end assembly, however, the conventional monitoring equipment throwing equipment cannot solve the problems, the fracturing fluid cannot be synchronously stirred in the conveying process, and the uniformity of the fracturing fluid is not favorably improved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a fracturing pump fluid end assembly which is reasonable in design, a plurality of inclined feeding holes are uniformly distributed in an inner rotating seat, when a piston moves towards the outside of a piston tube, fracturing fluid enters from a feeding tube and jacks an inner rotating seat, the inclined feeding holes are exposed, and the fracturing fluid is sprayed into a cylindrical conveying chamber from the inclined feeding holes.

In order to achieve the purpose, the invention is realized by the following technical scheme: a fracturing pump fluid end assembly comprises a shell and a piston tube, wherein the piston tube is fixedly arranged on one side of the shell, a cylindrical conveying chamber is formed in the shell, a sealing movable bearing is movably arranged in the bottom of the cylindrical conveying chamber, an inner rotating seat is fixedly arranged in the sealing movable bearing, a plurality of inclined feeding holes are formed in the edge of the inner rotating seat, a plurality of limiting stirring tubes are fixedly arranged at the top of the inner rotating seat, a reset spring is fixedly connected to the inner side wall of the bottom of each limiting stirring tube, one end of each limiting stirring rod penetrates through the opening end of each limiting stirring tube and is fixedly connected with the reset spring, a discharging tube is fixedly arranged at the position, corresponding to the cylindrical conveying chamber, of the top of the shell, an inner discharging tube is fixedly connected to the bottom of the discharging tube, and a limiting bearing is fixedly sleeved on the inner discharging tube, the other end of the limiting stirring rod is fixedly connected with the outer side of the limiting bearing, a one-way valve is fixedly mounted on the inner discharging pipe, and a feeding pipe is fixedly mounted at the position, corresponding to the cylindrical conveying chamber, of the bottom of the shell.

In a preferred embodiment of the present invention, the piston tube, the discharge tube and the feeding tube are fixedly provided with connecting flanges.

In a preferred embodiment of the present invention, a piston is movably installed in the piston tube, and a piston rod is fixedly connected to one side of the piston.

As a preferred embodiment of the invention, the piston tube and the feed tube are both in communication with a cylindrical delivery chamber.

In a preferred embodiment of the present invention, the number of the piston tube, the discharge tube and the feed tube is 3.

In a preferred embodiment of the present invention, the one-way valve is a one-way discharge inner discharge pipe.

The invention has the beneficial effects that: the invention discloses a fracturing pump hydraulic end assembly which comprises a shell, a piston pipe, a sealing movable bearing, an inner rotating seat, an inclined feeding hole, a limiting stirring pipe, a reset spring, a limiting stirring rod, a discharging pipe, an inner discharging pipe, a limiting bearing, a one-way valve, a feeding pipe, a piston rod, a connecting flange and a cylindrical conveying chamber.

1. The slope feed port of a plurality of evenly distributed has been seted up on the interior rotation seat of this fracturing pump fluid end assembly, when the piston moved outside the piston tube, fracturing fluid got into and with interior rotation seat jack-up from the inlet pipe, the slope feed port exposes, fracturing fluid sprays from the slope feed port and gets into in the cylindrical delivery room, at this in-process, under the effect of fracturing fluid ejection thrust, interior rotation seat is at sealed loose bearing internal rotation, and drive spacing agitator pipe and spacing puddler rotation simultaneously, thereby stir fracturing fluid, can prevent effectively that the solid particle in the fracturing fluid from subsiding and gathering, improve the degree of consistency of fracturing fluid.

2. The spacing stirring pipe and the spacing puddler cooperation of this fracturing pump fluid end assembly can carry on spacingly to the interior seat that rotates, makes interior seat and sealed loose bearing remove with fixed orbit at cylindrical transport chamber, prevents that interior seat from rotating the in-process skew of removing, guarantees the removal that interior seat and sealed loose bearing can be smooth and easy.

3. The spacing bearing has been installed on the interior discharging pipe of this fracturing pump fluid end assembly, the top and the spacing bearing fixed connection of spacing puddler to make spacing puddler and spacing agitator pipe all have stable connection, when the stirring, make spacing puddler and spacing agitator pipe more stable, improve the stability of stirring.

Drawings

FIG. 1 is a schematic diagram of a hydraulic end assembly of a fracturing pump;

FIG. 2 is a schematic cross-sectional view of a fracturing pump fluid end assembly;

FIG. 3 is a schematic cross-sectional view of an inner rotating base of a fracturing pump fluid end assembly;

in the figure: 1. a housing; 2. a piston tube; 3. sealing the movable bearing; 4. an inner rotating seat; 5. inclining the feeding hole; 6. limiting the stirring pipe; 7. a return spring; 8. a limiting stirring rod; 9. a discharge pipe; 10. an inner discharge pipe; 11. a limit bearing; 12. a one-way valve; 13. a feed pipe; 14. a piston; 15. a piston rod; 16. a connecting flange; 17. a cylindrical delivery chamber.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: a fracturing pump hydraulic end assembly comprises a shell 1 and a piston tube 2, wherein the piston tube 2 is fixedly arranged on one side of the shell 1, a cylindrical conveying chamber 17 is formed in the shell 1, a sealed movable bearing 3 is movably arranged in the bottom of the cylindrical conveying chamber 17, an inner rotating seat 4 is fixedly arranged in the sealed movable bearing 3, a plurality of inclined feeding holes 5 are formed in the edge of the inner rotating seat 4, a plurality of limiting stirring tubes 6 are fixedly arranged at the top of the inner rotating seat 4, a reset spring 7 is fixedly connected to the inner side wall of the bottom of each limiting stirring tube 6, one end of each limiting stirring rod 8 penetrates through the opening end of each limiting stirring tube 6 and is fixedly connected with the reset spring 7, a discharge tube 9 is fixedly arranged at the position corresponding to the cylindrical conveying chamber 17 at the top of the shell 1, and an inner discharge tube 10 is fixedly connected to the bottom of the discharge tube 9, the fixed cover is equipped with spacing bearing 11 on the interior discharging pipe 10, the outside side fixed connection of the other end of spacing puddler 8 and spacing bearing 11, fixed mounting has check valve 12 on the interior discharging pipe 10, the bottom of shell 1 and the corresponding position department fixed mounting of cylindrical transport chamber 17 have a inlet pipe 13.

In a preferred embodiment of the present invention, the piston tube 2, the discharge tube 9 and the feeding tube 13 are fixedly provided with connecting flanges 16.

In a preferred embodiment of the present invention, a piston 14 is movably installed in the piston tube 2, and a piston rod 15 is fixedly connected to one side of the piston 14.

As a preferred embodiment of the invention, the piston tube 2 and the feed tube 13 are both in communication with a cylindrical delivery chamber 17.

In a preferred embodiment of the present invention, the number of the piston pipes 2, the discharge pipes 9 and the feeding pipes 13 is 3.

In a preferred embodiment of the invention, the one-way valve 12 is a one-way tapping inner tapping pipe 10.

As a preferred embodiment of the invention, when in use, the equipment is installed on a fracturing pump, a plurality of inclined feeding holes 5 which are uniformly distributed are formed in an inner rotary seat 4, when a piston 14 moves towards the outside of a piston tube 15, fracturing fluid enters from a feeding tube 13 and jacks up the inner rotary seat 4, the inclined feeding holes 5 are exposed, a limiting stirring rod 8 is pressed into a part of the limiting stirring tube 6 and compresses a return spring 7, and the fracturing fluid is sprayed into a cylindrical conveying chamber 17 from the inclined feeding holes 5, in the process, under the action of the spraying thrust of the fracturing fluid, the inner rotary seat 4 rotates in a sealing movable bearing 3 and simultaneously drives the limiting stirring tube 6 and the limiting stirring rod 8 to rotate, so that the fracturing fluid is stirred, solid particles in the fracturing fluid can be effectively prevented from settling and accumulating, the uniformity of the fracturing fluid is improved, when the piston 14 moves reversely, under the action of the elastic force of the reset spring 7, the limit stirring pipe 6 and the limit stirring rod 8 downwards push the seal movable bearing 3 and the inner rotating seat 4, the seal movable bearing 3 and the inner rotating seat 4 seal the feeding pipe 13, the fracturing fluid in the cylindrical conveying chamber 17 is discharged through the inner discharging pipe 10 and the discharging pipe 9, the limit stirring pipe 6 and the limit stirring rod 8 are matched to limit the inner rotating seat 4, so that the inner rotating seat 4 and the seal movable bearing 3 move in the cylindrical conveying chamber 17 in a fixed track, the inner rotating seat 4 is prevented from deflecting in the moving process, the smooth movement of the inner rotating seat 4 and the seal movable bearing 3 is ensured, the limit bearing 11 is installed on the inner discharging pipe 10, the top of the limit stirring rod 8 is fixedly connected with the limit bearing 11, the limit stirring rod 8 and the limit stirring pipe 6 are stably connected, and the limit stirring rod 8 and the limit stirring pipe 6 are more stable during stirring, the stirring stability is improved.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fracturing pump fluid end assembly, includes shell (1) and piston tube (2), its characterized in that, piston tube (2) fixed mounting is in one side of shell (1), cylindrical transport chamber (17) have been seted up in shell (1), movable mounting has sealed loose bearing (3) in the bottom of cylindrical transport chamber (17), fixed mounting has interior rotation seat (4) in sealed loose bearing (3), the edge of interior rotation seat (4) has seted up a plurality of slope feed port (5), the top fixed mounting of interior rotation seat (4) has a plurality of spacing agitator tube (6), fixedly connected with reset spring (7) on the inside wall of spacing agitator tube (6) bottom, the open end of spacing agitator tube (6) is passed to the one end of spacing agitator bar (8) and with reset spring (7) fixed connection, the utility model discloses a material conveying device, including shell (1), discharging pipe (9) are arranged to the top of shell (1) and the position department fixed mounting that cylindrical transport chamber (17) correspond, discharging pipe (10) in the bottom fixedly connected with of row material pipe (9), interior discharging pipe (10) are gone up fixed cover and are equipped with spacing bearing (11), the other end of spacing puddler (8) and the outside side fixed connection of spacing bearing (11), fixed mounting has check valve (12) on interior discharging pipe (10), the bottom of shell (1) and the position department fixed mounting that cylindrical transport chamber (17) correspond have inlet pipe (13).

2. The fracturing pump fluid end assembly of claim 1, wherein: and the piston pipe (2), the discharge pipe (9) and the feeding pipe (13) are fixedly provided with connecting flanges (16).

3. The fracturing pump fluid end assembly of claim 1, wherein: a piston (14) is movably mounted in the piston pipe (2), and a piston rod (15) is fixedly connected to one side of the piston (14).

4. The fracturing pump fluid end assembly of claim 1, wherein: the piston pipe (2) and the feeding pipe (13) are communicated with a cylindrical conveying chamber (17).

5. The fracturing pump fluid end assembly of claim 1, wherein: the number of the piston pipes (2), the number of the discharging pipes (9) and the number of the feeding pipes (13) are all 3.

6. The fracturing pump fluid end assembly of claim 1, wherein: the one-way valve (12) is a one-way discharge inner discharge pipe (10).