CN210757464U

CN210757464U - Well cementation cement truck plunger pump gland dismouting device

Info

Publication number: CN210757464U
Application number: CN201921533991.4U
Authority: CN
Inventors: 董军; 郑永生; 刘德杰; 林建增; 陈泽彬; 唐建忠; 于俊
Original assignee: China National Petroleum Corp; CNPC Xibu Drilling Engineering Co Ltd
Current assignee: China National Petroleum Corp; CNPC Xibu Drilling Engineering Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-16
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a plunger pump pressure lid dismouting technical field is a well cementation cement car plunger pump pressure lid dismouting device, it includes fixed connection board, the pneumatic cylinder, the curved wheel, compression spring, locking lid and ratchet, the right-hand member of pneumatic cylinder is articulated to be installed at the right-hand member of fixed connection board, the left end fixed mounting at fixed connection board has the spacing fixed axle that the fore-and-aft direction was arranged, can follow the lower extreme suit of spacing fixed axle left and right sides at the front and back of spacing fixed axle of pivoted curved wheel, the upper end of curved wheel is together with the telescopic link articulated installation of pneumatic cylinder. The utility model discloses rational in infrastructure, convenient to use promotes the telescopic link through the pneumatic cylinder high pressure, and it is rotatory that the rotatory moment of torsion that forms of curved wheel can easily drive the gland, has the characteristics of making things convenient for well cementation cement truck plunger pump gland dismouting, and the ratchet meshes with the tooth on the curved wheel under the effect of spring simultaneously, has the characteristics that prevent the curved wheel and reverse.

Description

Well cementation cement truck plunger pump gland dismouting device

Technical Field

The utility model relates to an oil equipment instrument technical field is a well cementation cement car plunger pump pressure lid dismouting device.

Background

The well cementation cement truck is the main equipment for operations such as injection of pad fluid, cement injection, replacement of slurry, collision pressure and the like in well cementation construction, the plunger pump is an important component of the well cementation cement truck, and as the construction operation time is long, the pressure is high, and most of the pumped liquid is cement slurry, drilling fluid and other media with higher density, the gland is very difficult to disassemble, and the disassembly difficulty is aggravated if the well cementation cement truck is stopped for a long time and cannot be maintained regularly. At present, the gland can be disassembled only by manpower, and a hammer is used for smashing, so that the method is single and has poor effect. The packing of three plungers is changed, and three operators of the general train set need about 6 hours, and once meeting the extremely difficult gland of dismantling, when can not move power-driven steam welding, then need consume more time and physical power, has greatly increased the intensity of labour who maintains the hydraulic end of plunger pump, and work efficiency is low. Because the hydraulic end is filled with liquid in a sealed vacuum state when working, no puncture and no leakage must be ensured, and the installation of the gland also has extremely high requirements.

Disclosure of Invention

The utility model provides a well cementation cement car plunger pump pressure lid dismouting device has overcome above-mentioned prior art not enough, and it can effectively solve the difficult problem of well cementation cement car plunger pump pressure lid dismouting.

The technical scheme of the utility model is realized through following measure: a device for disassembling and assembling a pressure cover of a plunger pump of a well cementing cement truck comprises a fixed connecting plate, a hydraulic cylinder, a curved wheel, a compression spring, a locking cover and a ratchet wheel, wherein the right end of the hydraulic cylinder is hinged and installed at the right end of the fixed connecting plate, a limit fixing shaft arranged in the front-back direction is fixedly installed at the left end of the fixed connecting plate, the lower end of the curved wheel capable of rotating left and right along the limit fixing shaft is sleeved at the front side and the back side of the limit fixing shaft, the upper end of the curved wheel is hinged and installed with a telescopic rod of the hydraulic cylinder, a left positioning device capable of matching with the shape of a mounting hole of the pressure cover is fixedly installed at the back side of the limit fixing shaft at the back side of the curved wheel, the locking cover is fixedly installed at the front end of the limit fixing shaft at the front side of the curved wheel, the compression spring and the ratchet wheel capable of pushing the ratchet wheel against the curved, and a right positioning device which can be matched with the gland mounting hole in shape is fixedly arranged at the right part of the fixed connecting plate corresponding to the left positioning device.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the left positioning device can comprise a hexagonal rotating shaft, and the hexagonal rotating shaft and the rear end of the limiting fixing shaft are fixedly installed together.

The hexagonal rotating shaft can be provided with a rectangular inner hole, the outer end of the limiting fixed shaft is a cuboid, and the cuboid is sleeved in the rectangular inner hole.

The right positioning device can comprise a fixed screw hole sleeve, a hexagonal fixing shaft and a limiting nut which are fixed at the right part of the fixed connecting plate, the front part of the hexagonal fixing shaft is fixedly arranged in the fixed screw hole sleeve through threads, and the limiting nut which can lock the hexagonal fixing shaft on the fixed screw hole sleeve is sleeved on the hexagonal fixing shaft.

The front end of the limiting fixed shaft at the front side of the crank wheel can be fixedly provided with a locking cover through a screw.

The right end of the hydraulic cylinder can be hinged to the right end of the fixed connecting plate through the connecting pin, and the upper end of the curved wheel is hinged to the telescopic rod of the hydraulic cylinder through the connecting pin.

The utility model discloses rational in infrastructure, convenient to use promotes the telescopic link through the pneumatic cylinder high pressure, and it is rotatory that the rotatory moment of torsion that forms of curved wheel can easily drive the gland, has the characteristics of making things convenient for well cementation cement truck plunger pump gland dismouting, and the ratchet meshes with the tooth on the curved wheel under the effect of spring simultaneously, has the characteristics that prevent the curved wheel and reverse.

Drawings

Fig. 1 is a schematic bottom view of the preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of the preferred embodiment of the present invention.

Fig. 3 is a schematic view of the operation structure of the preferred embodiment of the present invention.

The codes in the figures are respectively: the hydraulic cylinder is characterized in that the hydraulic cylinder is a fixed connecting plate 1, the hydraulic cylinder is a hydraulic cylinder 2, the crank wheel 3, the compression spring 4, the locking cover 5, the ratchet wheel 6, the limiting fixing shaft 7, the telescopic rod 8, the tooth 9, the ratchet 10, the hexagonal rotating shaft 11, the fixing screw hole sleeve 12, the hexagonal fixing shaft 13, the limiting nut 14, the screw 15, the connecting pin 16, the liquid inlet hole I17 and the liquid inlet hole II 18 are connected through the connecting pin.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of the upper, lower, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The technical scheme of the utility model is realized through following measure:

the invention will be further described with reference to the following examples and drawings:

as shown in attached figures 1 to 3, the device for disassembling and assembling the pressure cover of the well cementing cement truck plunger pump comprises a fixed connecting plate 1, a hydraulic cylinder 2, a curved wheel 3, a compression spring 4, a locking cover 5 and a ratchet 6, wherein the right end of the hydraulic cylinder 2 is hinged and installed at the right end of the fixed connecting plate 1, a limiting fixed shaft 7 arranged in the front-back direction is fixedly installed at the left end of the fixed connecting plate 1, the lower end of the curved wheel 3 capable of rotating left and right along the limiting fixed shaft 7 is sleeved at the front and back sides of the limiting fixed shaft 7, the upper end of the curved wheel 3 is hinged and installed with a telescopic rod 8 of the hydraulic cylinder 2, a left positioning device capable of matching with the shape of a pressure cover installation hole is fixedly installed at the back side of the limiting fixed shaft 7 at the back side of the curved wheel 3, the locking cover 5 is fixedly installed at the front end of the limiting fixed shaft 7 at the front side of the curved wheel 3, the compression spring 4 and, the front side surface of the curved wheel 3 is provided with teeth 9, the ratchets 10 of the ratchet wheel 6 are meshed with the teeth 9 on the front side surface of the curved wheel 3, and the right part of the fixed connecting plate 1 corresponding to the left positioning device is fixedly provided with a right positioning device which can be matched with the shape of the gland mounting hole. In use, hydraulic pressure gets into from feed liquor hole two 18, promote telescopic link 8 in the pneumatic cylinder 2, telescopic link 8 stretches out slowly, make and the 3 anticlockwise rotations of curved wheel through 16 hinged joint of connecting pin with

telescopic link

8, 3 anticlockwise rotations of curved wheel form moment, thereby drive the ratchet 6 rotation with 3 meshing of curved wheel through the moment of torsion, further drive the spacing fixed axle 7 rotation of being connected with 6 four directions of ratchet, drive hexagonal rotation axis 11 at last and rotate, thereby transmit power for the interior hexagonal hole of gland through the rotation of hexagonal rotation axis 11.

The dismounting device for the pump head cover of the plunger pump of the well cementation cement truck can be further optimized or/and improved according to actual requirements:

as shown in fig. 1 to 3, the left positioning device comprises a hexagonal rotating shaft 11, and the hexagonal rotating shaft 11 is fixedly installed with the rear end of the limiting fixed shaft 7. Such an arrangement provides better positioning.

As shown in attached figures 1 to 3, a rectangular inner hole is formed in the hexagonal rotating shaft 11, the outer end of the limiting fixing shaft 7 is a cuboid, and the cuboid is sleeved in the rectangular inner hole. The cuboid suit with 7 outer ends of spacing fixed axle is in the inside of the rectangle hole that is equipped with on hexagonal rotation axis 11, and the edges and corners joint of cuboid is in the edges and corners department of rectangle hole, conveniently fixes the end at spacing fixed axle 7 with hexagonal rotation axis 11, the transmission moment of torsion of being convenient for.

As shown in fig. 1 to 3, the right positioning device includes a fixing threaded sleeve 12 fixed on the right portion of the fixing connection plate 1, a hexagonal fixing shaft 13 and a stop nut 14, the front portion of the hexagonal fixing shaft 13 is fixedly installed in the fixing threaded sleeve 12 through threads, and the stop nut 14 capable of locking the hexagonal fixing shaft 13 on the fixing threaded sleeve 12 is sleeved on the hexagonal fixing shaft 13. The lower end of the hexagonal fixing shaft 13 is fixedly arranged in the fixed threaded hole sleeve 12 through threads, the hexagonal fixing shaft 13 is fixed, when the hexagonal fixing shaft is used, the front of the hexagonal fixing shaft 13 is placed in an inner hexagonal hole in front of a plunger pump cover, and the limiting nut 14 is screwed to limit the hexagonal fixing shaft 13, so that the effects of positioning and torque transmission can be better achieved.

As shown in fig. 1 to 3, the front end of the limiting fixed shaft 7 at the front side of the crank wheel 3 is fixedly provided with a locking cover 5 through a screw 15. The locking cover 5 is installed through a screw, the compression spring 4 and the ratchet 6 are locked by the locking cover 5, the compression spring 4 is kept in an extruded state, the ratchet 10 of the ratchet 6 is meshed with the teeth 9 of the curved wheel 3, after the dismounting device finishes dismounting, the compression spring 4 is stretched by unscrewing the locking cover 5, the compression spring 4 does not lock the ratchet 6, the ratchet 10 of the ratchet 6 is not meshed with the teeth 9 of the curved wheel 3, and the curved wheel 3 is restored to an initial state by rotating the curved wheel 3 clockwise.

As shown in fig. 1 to 3, for the convenience of installation and disassembly, the right end of the hydraulic cylinder 2 is hinged to the right end of the fixed connecting plate 1 through a connecting pin 16, and the upper end of the curved wheel 3 is hinged to the telescopic rod 8 of the hydraulic cylinder 2 through the connecting pin 16. In order to facilitate the detachment of the hydraulic cylinder 2 from the curved wheel 3 and the fixed connection plate 1, the hydraulic cylinder 2 is connected with the curved wheel 3 and the fixed connection plate 1 through a connection pin 16.

As shown in fig. 1 to 3, a first liquid inlet hole 17 and a second liquid inlet hole 18 are sequentially formed from left to right above the hydraulic cylinder 2. The hydraulic pipeline of the hydraulic wrench is respectively connected with the first liquid inlet hole 17 and the second liquid inlet hole 18, when the plunger pump gland is disassembled, the control handle starts to be pressed, hydraulic pressure enters from the second liquid inlet hole 18 to push the telescopic rod 8, and the hydraulic wrench has the characteristic that the telescopic rod 8 drives the curved wheel 3 to rotate anticlockwise to form torque conveniently.

The working process of the utility model is as follows: before the plunger pump gland is disassembled, a hydraulic pipeline of a hydraulic wrench is respectively connected with a first liquid inlet hole 17 and a second liquid inlet hole 18, the front of the hexagonal fixing shaft 13 is arranged in an inner hexagonal hole on the right gland, the hexagonal fixing shaft 13 is fixed by rotating the limit nut 14, the angle of the limit fixing shaft 7 is adjusted to the front of the hexagonal rotating shaft 11 and is arranged in an inner hexagonal hole on the left gland, and the installation is completed.

When the plunger pump gland is disassembled, the manual high-pressure pump reversing valve is locked, the control handle starts to pressurize, hydraulic pressure enters from the liquid inlet hole II 18 to push the telescopic rod 8, the telescopic rod 8 drives the curved wheel 3 to rotate anticlockwise to form torque, so that the ratchet wheel 6 meshed with the curved wheel 3 is driven to rotate through the torque, the limiting fixed shaft 7 connected with the ratchet wheel 6 in four directions is further driven to rotate, the hexagonal rotating shaft 11 is finally driven to rotate, force is transmitted to the hexagonal hole in the gland through the rotation of the hexagonal rotating shaft 11, the spring 4 is always kept in an extruded state in the process, the ratchet wheel 6 is supported, the ratchet 10 on the ratchet wheel 6 is always meshed with the teeth 9 on the curved wheel 3 to prevent the curved wheel 3 from reversing, the reading value of the pressure gauge gradually rises along with the continuous pressurizing of the control handle, the telescopic rod 8 in the hydraulic cylinder 2 slowly extends out to drive the gland to rotate anticlockwise, when pneumatic cylinder 2 drove 8 anticlockwise rotations of telescopic link, certain contained angle is formed in telescopic link 8 and the place of curved pulley 3 hinged joint, when the contained angle rotated for 36 (figure 3 state), the end was suppressed, open the switching-over valve pressure release, take off the instrument, can lift off the surplus of gland with special spanner and detain, through unscrewing locking lid 5, pull ratchet 6 to the outside, make ratchet 10 of ratchet 6 and the tooth 9 of curved pulley 3 no longer mesh, then clockwise rotation curved pulley 3 can resume instrument initial state.

The rotating direction of the installation gland is opposite to that of the disassembly gland, and the principle is the same.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. A device for disassembling and assembling a pressure cover of a plunger pump of a well cementation cement truck is characterized by comprising a fixed connecting plate, a hydraulic cylinder, a curved wheel, a compression spring, a locking cover and a ratchet wheel, wherein the right end of the hydraulic cylinder is hinged and installed at the right end of the fixed connecting plate, a limiting fixed shaft arranged in the front-back direction is fixedly installed at the left end of the fixed connecting plate, the lower end of the curved wheel capable of rotating left and right along the limiting fixed shaft is sleeved at the front side and the back side of the limiting fixed shaft, the upper end of the curved wheel is hinged and installed with a telescopic rod of the hydraulic cylinder, a left positioning device capable of matching with the shape of a pressure cover installation hole is fixedly installed at the back side of the limiting fixed shaft at the back side of the curved wheel, the locking cover is fixedly installed at the front end of the limiting fixed shaft at the front side of the curved wheel, the compression spring and the, the ratchet of the ratchet wheel is meshed with the teeth on the front side surface of the curved wheel, and a right positioning device which can be matched with the shape of the gland mounting hole is fixedly arranged on the right part of the fixed connecting plate corresponding to the left positioning device.

2. A well cementation cement truck plunger pump gland dismounting device according to claim 1, characterized in that the left positioning device comprises a hexagonal rotating shaft which is fixedly installed together with the rear end of the limiting fixed shaft.

3. A well cementation cement truck plunger pump gland dismounting device according to claim 2, characterized in that the hexagonal rotating shaft is provided with a rectangular inner hole, the outer end of the limiting fixed shaft is a cuboid, and the cuboid is sleeved in the rectangular inner hole.

4. A well cementation cement truck plunger pump gland dismounting device according to claim 1, 2 or 3 characterized in that the right positioning device comprises a fixed screw hole sleeve fixed on the right part of the fixed connection plate, a hexagonal fixed shaft and a limit nut, the front part of the hexagonal fixed shaft is fixedly installed in the fixed screw hole sleeve through screw threads, and the hexagonal fixed shaft is sleeved with the limit nut capable of locking the hexagonal fixed shaft on the fixed screw hole sleeve.

5. A well cementation cement truck plunger pump gland dismounting device according to claim 1 or 2 or 3, characterized in that the front end of the limiting fixed shaft at the front side of the curved wheel is fixedly provided with a locking cover through a screw.

6. A well cementation cement truck plunger pump gland dismounting device according to claim 4, characterized in that the front end of the limiting fixed shaft at the front side of the curved wheel is fixedly provided with a locking cover through a screw.

7. A well cementation cement truck plunger pump gland dismounting device according to claim 1 or 2 or 3 or 6, characterized in that the right end of the hydraulic cylinder is hinged at the right end of the fixed connection plate through a connection pin, and the upper end of the curved wheel is hinged together with the telescopic rod of the hydraulic cylinder through a connection pin.

8. A well cementation cement truck plunger pump gland dismounting device according to claim 4, characterized in that the right end of the hydraulic cylinder is hinged at the right end of the fixed connection plate through a connecting pin, and the upper end of the curved wheel is hinged together with the telescopic rod of the hydraulic cylinder through the connecting pin.

9. A well cementation cement truck plunger pump gland dismounting device according to claim 5, characterized in that the right end of the hydraulic cylinder is hinged at the right end of the fixed connection plate through a connection pin, and the upper end of the curved wheel is hinged together with the telescopic rod of the hydraulic cylinder through a connection pin.