CN217501885U - Novel hydraulic drive drilling pump - Google Patents

Abstract

The utility model discloses a novel hydraulic drive drilling pump belongs to well drilling technical field, include: a pump housing; a drive unit provided outside the pump housing; a hydraulic pump disposed outside the pump housing and connected to the drive unit; the transmission oil cylinder is communicated with a reversing valve of the hydraulic pump and is connected with a piston rod group; and the piston inside the piston cylinder is connected with the piston rod group. The utility model discloses the novel hydraulic drive drilling pump of example, simple structure, operate steadily, be convenient for installation, transportation and maintenance.

Description

Novel hydraulic drive drilling pump

Technical Field

The utility model relates to a drilling technical field especially relates to novel hydraulic drive drilling pump.

Background

In the drilling industry, a drilling pump mainly plays roles in cooling a drill bit, pumping high-pressure well fluid, removing rock debris at the bottom of a well, treating complex conditions under the well, controlling pressure and the like, and the performance of the drilling pump directly influences the drilling speed and the drilling cost. With the development of the petroleum industry, the drilling depth is continuously deepened, and the defects of the traditional drilling pump become bottlenecks which restrict the development of drilling equipment. The major problems with current bore pumps include: (1) the stroke is short, the stroke frequency is high, the stroke and the stroke frequency are inconvenient to adjust, the drilling pump works in an unsuitable stroke frequency range, and the working efficiency is low; (2) the device is provided with an air bag, a filling pump and the like, so that the structure is heavy and complex, the disassembly and the transportation are inconvenient, the maintenance cost is high, and the maintenance cost is high; (3) the output pressure is unstable.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model aims to provide a novel hydraulic drive drilling pump which has simple structure, operates stably and is convenient to install, transport and maintain.

The utility model provides a technical scheme that its technical problem adopted does:

there is provided a novel hydraulically driven borehole pump comprising: a pump housing; a drive unit provided outside the pump housing; a hydraulic pump disposed outside the pump housing and connected to the drive unit; the transmission oil cylinder is communicated with a reversing valve of the hydraulic pump and is connected with a piston rod group; and the piston inside the piston cylinder is connected with the piston rod group.

Furthermore, the transmission oil cylinder is connected with an energy accumulator.

Furthermore, the piston rod group comprises a piston rod of the transmission oil cylinder and a piston rod of the piston cylinder.

Furthermore, the driving part is a variable-frequency explosion-proof motor.

Further, the driving part is a belt pulley set of the diesel engine.

Further, the hydraulic pump is a variable displacement hydraulic pump.

Furthermore, the device also comprises a base for bearing the driving part, the hydraulic pump, the pump shell and the energy accumulator.

Further, the hydraulic pump is provided with one or more.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the novel hydraulic drive drilling pump disclosed by the example of the utility model has the advantages that the stroke is long, the stroke frequency is low, in order to increase the volumetric efficiency of the pump and reduce the running speed of the piston, the stroke frequency can be reduced by increasing the stroke, namely, the stroke and the cylinder diameter can be increased by increasing the lengths of the transmission oil cylinder and the piston cylinder, and the stroke frequency is also reduced; the driving part can be intelligently controlled to realize the inorganic regulation of the reciprocating motion of the piston, and the stroke and the frequency of stroke can be correspondingly regulated according to production requirements;

2. the novel hydraulic drive drilling pump disclosed by the example of the utility model has stable output displacement and pressure, the piston almost moves at a constant speed when reciprocating, the output pressure only slightly changes when the piston moves to a dead point, and the stroke frequency is constant speed under the transmission of hydraulic oil, so that the output displacement and the pressure of the novel drilling pump are stable;

3. the novel hydraulic drive drilling pump has the advantages that the piston does uniform linear reciprocating motion during working, so that the overall vibration is reduced, the impact load of ground equipment, a wellhead device and a pipe column is reduced, the cavitation and water hammer effect of a medium in the piston cylinder on the piston cylinder is also prevented, the abrasion of the piston cylinder and the piston is also reduced, the service life and the reliability of a pump valve, the piston cylinder, a valve seat and a sealing element of the valve seat are prolonged, the maintenance workload is reduced, the maintenance intensity is reduced, and the working efficiency is improved;

4. the novel hydraulic drive drilling pump of the example of the utility model can realize stepless speed regulation and stable operation, can obtain larger thrust when running at low speed, has accurate and reliable transmission, and is easy to realize remote control and overload protection;

5. the utility model discloses the novel hydraulic drive drilling pump of example, parts such as piston rod group and piston cylinder have better lubricity, have reduced wearing and tearing, have prolonged the life of piston and piston cylinder, have practiced thrift the cost simultaneously, have realized standardization, serialization and universalization assembly.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a side view of the present invention.

In the figure: 1-replaceable driving part, 2-variable hydraulic pump, 3-reversing valve, 4-transmission oil cylinder, 5-energy accumulator, 6-piston rod group, 7-piston, 8-piston cylinder, 9-machine base and 10-pump shell.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 3, the present embodiment provides a novel hydraulic drive borehole pump, which includes a base 9, a driving portion and a pump housing 10, wherein the pump housing 10 is located on the base 9, and the driving portion is located at one end of the base 9 and outside the pump housing 10.

A hydraulic pump is arranged outside the pump shell 10, one end of the hydraulic pump is connected with the driving part, the other end of the hydraulic pump is connected with a reversing valve 3, the reversing valve 3 is connected with a transmission oil cylinder 4, the transmission oil cylinder 4 is connected with a piston rod group 6, and the piston rod group 6 is connected with a piston 7 in a piston cylinder. And one end of the rod cavity of the transmission oil cylinder 4 is connected with an energy accumulator 5. Specifically, the driving part is a replaceable driving part 1, and the hydraulic pump is a variable displacement hydraulic pump 2. The transmission oil cylinder 4, the piston rod group 6 and the piston cylinder 8 are all positioned in the pump shell 10. The replaceable driving part 1 drives the variable hydraulic pump 2 to pump high-pressure hydraulic oil, the high-pressure hydraulic oil enters the transmission oil cylinders 4 through the reversing valve 3 in sequence, the high-pressure hydraulic oil in the transmission oil cylinders 4 drives the piston rod group 6 to move, and the piston rod group 6 pushes and pulls the piston 7 to reciprocate so as to pump out a medium in the piston cylinder 8. In order to increase the volumetric efficiency of the pump and reduce the running speed of the piston 7, the stroke frequency can be reduced by increasing the stroke, namely the stroke and the cylinder diameter can be increased by increasing the lengths of the transmission oil cylinder 4 and the piston cylinder 8, and the stroke frequency is also reduced. In addition, because piston 7 is at the uniform velocity motion almost when reciprocating motion, only there is weak change at piston 7 output pressure when moving to the dead point, in addition piston 7 is under the transmission of hydraulic oil, and the number of strokes is at the uniform velocity, consequently, the utility model discloses the discharge capacity and the pressure of drilling pump output are all steady, and it is big to have solved the mechanical drive drilling pump existing pulse now, need assemble the discharge air package and be used for offsetting the big problem of pulse. When the piston works, the piston does uniform linear reciprocating motion, so that the overall vibration is reduced, the impact load of ground equipment, a wellhead device and a pipe column is reduced, the cavitation and water hammer effect of a medium in the piston cylinder 8 on the piston cylinder 8 is also prevented, the abrasion of the piston cylinder 8 and the piston 7 is also reduced, the service life and the reliability of a pump valve, the piston 7, the piston cylinder 8, a valve seat and a sealing element thereof are prolonged, the maintenance workload is reduced, the maintenance strength is reduced, and the working efficiency is improved.

Specifically, the replaceable driving part 1 is a variable frequency explosion-proof motor or a diesel engine pulley group, and is used for driving the variable hydraulic pump 2, and the driving part can be selected and installed as required. The replaceable driving part 1 can be intelligently controlled to realize stepless adjustment of the reciprocating motion of the piston 7, the stroke and the frequency of stroke can be correspondingly adjusted according to production requirements, the stepless speed regulation realizes accurate and reliable transmission, remote control and overload protection are realized, in addition, parts such as the piston rod group 6, the piston cylinder 8 and the like have better lubricating property, the abrasion is reduced, the service lives of the piston 7 and the piston cylinder 8 are prolonged, the cost is saved, and the standardized, serialized and generalized assembly is realized.

One end of a rodless cavity of the transmission oil cylinder 4 is connected with the reversing valve 3, and hydraulic oil is pumped into the rodless cavity in the transmission oil cylinder 4 through the variable hydraulic pump 2 and the reversing valve 3 to push the piston rod group 6 to move.

One end of the rod cavity of the transmission oil cylinder 4 is connected with the energy accumulator 5, hydraulic oil enters the rod cavity of the transmission oil cylinder 4 from the energy accumulator 5 to push the piston rod group 6 back, and return motion of the piston rod group 6 is achieved.

The piston rod group 6 comprises a piston rod of the transmission oil cylinder 4 and a piston rod of the piston cylinder 8, and penetrates through the transmission oil cylinder 4 and the piston cylinder 8. The piston 7 reciprocates in the piston cylinder 8 to pump out a medium in the piston cylinder 8.

The hydraulic pump can be provided with one or more, correspondingly, the pump shell 10, the reversing valve 3, the transmission oil cylinder 4, the piston rod group 6 and the piston cylinder 8 are also provided with one or more, and in the embodiment, the hydraulic pump can be provided with corresponding quantity according to the requirement. The slurry pump can be combined into a multi-cylinder slurry pump by a plurality of pumps, for example, a six-cylinder pump can be assembled by two three-cylinder pumps, and the combined volume and displacement are larger, thereby meeting the requirements of working conditions of deep well drilling and offshore drilling.

The utility model discloses a novel hydraulic drive drilling pump, a structure is simple, it is convenient to use, and it utilizes the high-pressure oil that variable hydraulic pump 2 was beated out to get into in transmission cylinder 4 through switching-over valve 3 in order in the use, in transmission cylinder 4 drives piston 7 in every piston cylinder 8 respectively through piston rod group 6 and carries out uniform velocity reciprocating motion, can effectually sparingly make and use cost, convenient maintenance simultaneously, the cost of maintenance that reduces, in addition, the stability in use is strong, better practicality and suitability have, the fine needs that satisfy deep well drilling and offshore drilling operating mode of ability.

It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (8)

1. Novel hydraulic drive bore hole pump, its characterized in that includes:

a pump housing (10);

a drive unit (1) provided outside the pump housing (10);

a hydraulic pump (2) which is disposed outside the pump housing (10) and is connected to the drive unit (1);

the transmission oil cylinder (4) is communicated with the reversing valve (3) of the hydraulic pump (2) and is connected with a piston rod group (6);

and the piston (7) in the piston cylinder (8) is connected with the piston rod group (6).

2. The new hydraulically driven borehole pump according to claim 1, characterized in that an energy accumulator (5) is connected to the transmission cylinder (4).

3. The new hydraulically driven borehole pump according to claim 1, characterized in that the piston rod group (6) comprises the piston rod of the transmission cylinder (4) and the piston rod of the piston cylinder (8).

4. The new hydraulic drive drill pump according to claim 1, characterized in that the drive (1) is a variable frequency explosion-proof motor.

5. The new hydraulically driven borehole pump according to claim 1, characterized in that the drive (1) is a diesel pulley set.

6. The new hydraulically driven borehole pump according to claim 1, characterized in that the hydraulic pump (2) is a variable displacement hydraulic pump.

7. The new hydraulically driven borehole pump according to any of claims 1 to 6, characterized in that it further comprises a frame (9) carrying the drive section (1), the hydraulic pump (2), the pump housing (10) and the energy storage (5).

8. Novel hydraulically driven borehole pump according to claim 7, characterized in that the hydraulic pump (2) is provided with one or more.

Images