CN210714968U

CN210714968U - Hydraulic fracturing pump

Info

Publication number: CN210714968U
Application number: CN201921861684.9U
Authority: CN
Inventors: 杨鑫; 郭雁军; 任行
Original assignee: Sany Petroleum Intelligent Equipment Co Ltd
Current assignee: Sany Petroleum Intelligent Equipment Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-09
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a hydraulic fracturing pump, which relates to the field of hydraulic fracturing pumps, and comprises a hydraulic driving component, a gear box and a plug; the hydraulic drive assembly is connected with a first gear in the gear box in a driving mode including the motor installed on the gear box, the hydraulic drive assembly and/or the gear box are/is provided with oil guide holes used for enabling the shaft seal of the motor to be communicated with the outside, the plugs are detachably installed in the oil guide holes, and oil leaking from the shaft seal can be guided to the outside through the oil guide holes. The technical problems that when the motor on the hydraulic fracturing pump leaks oil, the motor shaft seal detection process consumes long time and the manpower and material resources are high in cost are solved.

Description

Hydraulic fracturing pump

Technical Field

The utility model relates to a fluid pressure type fracturing pump field particularly, relates to a fluid pressure type fracturing pump.

Background

The fracturing construction operation is one of the important means for reforming oil and gas reservoirs, and for low-permeability oil and gas wells, the purposes of stable production and yield increase can be achieved by means of the fracturing operation. The fracturing pump is a main device for fracturing construction, and has the functions of injecting high-pressure and large-discharge fracturing fluid into a stratum, fracturing the stratum, and extruding a support material (such as fracturing sand) into a fracture so as to enhance the permeability of the stratum, increase the mobility of oil and gas and improve the recovery ratio of the oil and gas. The existing fracturing pump is generally a hydraulic fracturing pump, a plurality of first gears in the gear box are driven to rotate mainly by a plurality of motors arranged on the outer side of the gear box, the first gears are all meshed with a second gear to drive the second gear to rotate together, the second gear is matched with a crankshaft to drive the crankshaft to rotate, and finally the crankshaft drives a connecting rod and a plunger to do reciprocating linear motion so as to realize fracturing construction.

In the prior art, because the shaft seal of the motor faces the inner cavity of the gear box, after the shaft seal of the motor leaks oil, leaked hydraulic oil can directly flow into the gear box along the rotating shaft and is mixed with lubricating oil in the gear box, and redundant oil can also leak from the lubricating oil box while the lubricating effect between gears in the gear box is influenced. At this time, all the motors need to be detached from the gear box, the quality of shaft seals of the motors is verified by performing an air tightness experiment or other methods, and then the motors are repaired and installed on the gear box, so that the whole process is long in time (about 2-3 days), the cost of manpower and material resources is high, and the normal operation of the hydraulic fracturing pump is also influenced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a fluid pressure type fracturing pump for when alleviating the motor on the fluid pressure type fracturing pump and appearing the bearing seal oil leak, motor bearing seal testing process is long consuming time, technical problem that manpower and materials are with high costs.

The embodiment provides a hydraulic fracturing pump, which comprises a hydraulic driving assembly, a gear box and a plug;

the hydraulic driving assembly comprises a motor arranged in the gear box, the motor is in driving connection with a first gear in the gear box, the hydraulic driving assembly and/or the gear box are/is provided with an oil guide hole used for communicating a shaft seal of the motor with the outside, the plug is detachably arranged in the oil guide hole, and the oil guide hole can guide oil leaked from the shaft seal to the outside.

In an alternative embodiment, the hydraulic drive assembly further comprises a mount to which the motor is mounted, the mount being fixedly mounted to the gearbox.

In an optional embodiment, the mounting seat is installed between the motor and the gear box, the mounting seat is provided with a through hole, the through hole is sleeved on a rotating shaft of the motor, one end of the through hole is communicated with a shaft seal of the motor, the other end of the through hole is communicated with the gear box, and the oil guide hole is arranged in the mounting seat and communicated with the through hole.

In an alternative embodiment, the axis of the oil guide hole extends in the radial direction of the through hole, and the oil guide hole is disposed at one end of the mounting seat close to the shaft seal of the motor.

In an alternative embodiment, the number of the oil guide holes on each mounting seat is multiple, and at least one oil guide hole is arranged at the opening of the outer wall of the mounting seat facing downwards.

In an alternative embodiment, the number of the oil guide holes on each mounting seat is two.

In an optional embodiment, the oil guide hole is a threaded hole, and the plug is provided with an external thread matched with the threaded hole.

In an alternative embodiment, the plug comprises a socket head cap.

In an alternative embodiment, there are a plurality of the first gears, and the number of the hydraulic drive assemblies is the same as the number of the first gears and corresponds to one another.

In an alternative embodiment, each of the hydraulic drive assemblies includes two of the mounting seats and two of the motors, the two motors are respectively mounted on the two mounting seats, one end of the gear shaft of the first gear is in driving connection with one of the motors, and the other end of the gear shaft of the first gear is in driving connection with the other motor.

Compared with the prior art, the utility model provides a fluid pressure type fracturing pump's beneficial effect as follows:

the utility model provides a fluid pressure type fracturing pump, including hydraulic drive subassembly, gear box and end cap, wherein, the hydraulic drive subassembly is including installing in the motor in the gear box outside, and the pivot of motor is passed the gear box and is connected with a gear drive, and at this moment, the bearing seal of motor and the inboard first gear intercommunication of gear box, during the oil leak of bearing seal department of motor, the hydraulic oil of leakage can flow to in the gear box. The hydraulic drive assembly and/or the gear box are/is provided with an oil guide hole for communicating the shaft seal of the motor with the outside, and when oil leaks from the shaft seal of the motor, leaked hydraulic oil can flow to the outside through the oil guide hole; when the shaft seal oil leakage of the motor is unknown, the oil guide hole is detachably connected with the plug, and the plug ensures that the shaft seal of the motor and the inner side of the gear box are not communicated with the outside so as to prevent external impurities from entering the gear box.

The hydraulic drive assembly is started, at the moment, a worker only needs to observe whether the oil guide holes corresponding to the motors leak oil or not, if the oil leaks, the oil seal leakage of the motors corresponding to the oil guide holes is represented, the worker only needs to detach the motors, and then the motors are repaired and then installed on the gear box, so that the problem of oil seal leakage of the shafts of the motors can be solved. The shaft seal testing process of above-mentioned motor only needs to detach the end cap and leads the oilhole, then normally start the hydraulic drive subassembly of fluid pressure type force pump can, need not detach all motors from the gear box again, also need not carry out shaft seal gas tightness experiment etc. again respectively, whole process consuming time is very short, only needs a staff can accomplish, and manpower and materials are with low costs, can not influence the normal work of fluid pressure type fracturing pump basically.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic structural view of a hydraulic fracturing pump provided by an embodiment of the present invention when a motor and a mounting seat are assembled;

fig. 2 is a schematic top view of a mounting seat in a hydraulic fracturing pump according to an embodiment of the present invention;

fig. 3 is a left side view structure diagram of the mount pad in the hydraulic fracturing pump that the embodiment of the utility model provides.

Icon: 10-a mounting seat; 20-a motor;

11-oil guide hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The hydraulic fracturing pump provided by the embodiment comprises a hydraulic driving assembly, a gearbox and a plug, wherein the hydraulic driving assembly comprises a motor 20 installed on the outer side of the gearbox, a rotating shaft of the motor 20 penetrates through the gearbox and is in driving connection with a first gear, at the moment, a shaft seal of the motor 20 is communicated with the first gear on the inner side of the gearbox, and when oil leaks from the shaft seal of the motor 20, leaked hydraulic oil can flow into the gearbox. The hydraulic driving assembly is also provided with an oil guide hole 11 for communicating the shaft seal of the motor 20 with the outside, and when oil leaks from the shaft seal of the motor 20, leaked hydraulic oil can flow to the outside through the oil guide hole 11; when the shaft seal of the motor 20 is not known to leak oil, the oil guide hole 11 is detachably connected with a plug, and the plug ensures that the shaft seal of the motor 20 and the inner side of the gear box are not communicated with the outside so as to prevent external impurities from entering the gear box.

When oil leakage occurs at the lubricating oil tank and the shaft seal of the motor 20 is judged to be oil leakage, the plugs on all the motors 20 are detached from the oil guide holes 11, then the hydraulic driving assembly is started, at the moment, a worker only needs to observe whether oil leaks from the oil guide holes 11 corresponding to all the motors 20, if oil leaks, the oil leakage of the shaft seal of the motor 20 corresponding to the oil guide hole 11 is represented, the worker only needs to detach the motor 20, and then the motor 20 is repaired and then installed on the gear box, so that the problem of oil leakage of the shaft seal of the motor 20 can be solved. Above-mentioned motor 20's bearing seal testing process only needs to detach the end cap and leads oilhole 11, then normally start the hydraulic drive subassembly of fluid pressure type force pump can, need not detach all motor 20 gear boxes again, also need not carry out bearing seal gas tightness experiment etc. again respectively, whole process consuming time is very short, only needs a staff can accomplish, and manpower and materials are with low costs, can not influence the normal work of fluid pressure type fracturing pump basically.

It should be noted that, in this embodiment, the oil guiding hole 11 may be disposed in the gear box, or the oil guiding hole 11 may be disposed in both the gear box and the hydraulic driving assembly, as long as the oil leaked from the shaft seal of the motor 20 passes through the oil guiding hole 11 and can be guided to the outside by the oil guiding hole 11 before entering the gear box. In addition, in the present embodiment, the motor 20 is installed in the gear box and has its axis extending in the horizontal direction in the normal operation state. Finally, every first gear all rotates through its gear shaft and installs in the gear box, and is concrete, the equal interference fit in both ends of gear shaft has the bearing, the gear box is corresponding to be equipped with two shaft holes of axis collineation, the outer lane of two bearings respectively with corresponding shaft hole interference fit, in addition, motor 20's the terminal processing of pivot has the spline, the tip of gear shaft is equipped with the splined hole with spline fit, motor 20 installs behind the gear box, the spline of its pivot is pegged graft with the splined hole on the gear shaft and is cooperated, in order to realize that motor 20 is connected with the drive of gear shaft.

Specifically, the present embodiment also provides the following detailed description of the specific structure of the hydraulic fracturing pump.

Referring to fig. 1-3, in the present embodiment, the hydraulic drive assembly further includes a mounting base 10, the motor 20 is mounted on the mounting base 10, and the mounting base 10 is fixedly mounted on the gearbox.

Preferably, the motor 20 is detachably mounted on the mounting seat 10, the mounting seat 10 is detachably mounted on the gear box, and the mounting seat 10 ensures that the hydraulic driving assembly presses against the outer side of the gear box and seals the outer opening of the shaft hole, so that hydraulic oil leaked from the shaft seal of the motor 20 can only enter the gear box or flow to the outside through the oil guide hole 11. This setting has guaranteed that fluid pressure type fracturing pump is at the during operation, under the circumstances that leads oilhole 11 by the end cap shutoff, motor 20's bearing seal also can not flow to the external world even the oil leak, has guaranteed the clean and tidy of hydraulic drive subassembly with the gear box junction, also the oil leak back appears in motor 20's bearing seal department, and the staff is more convenient for observe and leads oilhole 11 and obviously have hydraulic oil to spill.

It should be noted that the motor 20 and the mounting base 10 may also be non-detachably connected, such as by welding or directly integrally formed, that is, the motor 20 itself includes a connecting flange capable of being mounted on the gear box, and in this case, the oil guide hole 11 is preferably disposed on the connecting flange.

In this embodiment, the mounting seat 10 is installed between the motor 20 and the gear box, the mounting seat 10 is provided with a through hole, the through hole is sleeved on the rotating shaft of the motor 20, one end of the through hole is communicated with the shaft seal of the motor 20, the other end of the through hole is communicated with the shaft hole, and the oil guide hole 11 is arranged on the mounting seat 10 and is communicated with the through hole.

Specifically, it is preferable that the axes of the through hole, the axis of the shaft hole on the gear box, and the axis of the motor 20 are all collinear, one end of the through hole on the mounting base 10 is butted with the shaft hole, the other end is butted with the shaft seal of the motor 20, and the hydraulic oil leaked from the shaft seal can only be guided to the bearing and the first gear in the shaft hole through the through hole. And through setting up oil guide hole 11 in mount pad 10 and communicating with the through-hole, when hydraulic oil flowed to the one end that is located the shaft hole from the one end that the through-hole is located the bearing seal, can pass through oil guide hole 11 opening on the through-hole inner wall at first, and then guided the external world by oil guide hole 11, basically can not have hydraulic oil to flow to in the gear box again.

Through leading oilhole 11 to set up on mount pad 10, the transformation processing is convenient, need not change the original size and the structure of motor 20 and gear box again, has guaranteed the original performance of motor 20 and gear box.

In this embodiment, the axis of the oil guide hole 11 extends along the radial direction of the through hole, and at this time, the length of the oil guide hole 11 is the shortest, so that the hydraulic oil can flow to the outside more quickly after entering the oil guide hole 11, and a worker can more quickly confirm whether the shaft seal of the motor 20 leaks oil; and then the oil guide hole 11 is arranged at one end of the mounting seat 10 close to the shaft seal of the motor 20, so that the time for the hydraulic oil to flow from the shaft seal to the opening of the oil guide hole 11 on the inner wall of the through hole is also shortened, and the detection efficiency of workers is further improved.

In this embodiment, there are a plurality of oil guide holes 11 in each mounting seat 10, and at least one oil guide hole 11 is disposed at the opening of the outer wall of the mounting seat 10 facing downward.

Specifically, the positions of the first gears in the gear box are different (the positions are uniformly distributed around the circumference of the second gears), and according to actual conditions (such as the size of the space of the gear box near the shaft hole), the inclination angles of different mounting bases 10 fixed on the gear box are different, at the moment, an oil guide hole 11 is always arranged downwards at the opening of the outer wall of the mounting base 10, and when whether oil leakage occurs in the shaft seal of the motor 20 needs to be detected, only a plug on the oil guide hole 11 needs to be detached.

The present embodiment preferably provides a plurality of oil guide holes 11 evenly distributed around the circumferential direction of the through hole.

Referring to fig. 2, in the present embodiment, there are two oil guide holes 11 in each mounting seat 10.

Specifically, it is preferable that the mounting seat 10 has only two mounting states, when the mounting seat 10 is in one of the mounting states, one of the oil guide holes 11 is disposed vertically downward at the opening of the outer wall of the mounting seat 10, and when the mounting seat 10 is in the other mounting state, the other oil guide hole 11 is disposed vertically downward at the opening of the outer wall of the mounting seat 10. The mounting seat 10 can switch two mounting states at regular time during subsequent use, and avoids the situation that the oil guide hole 11 is blocked due to the fact that hydraulic oil is accumulated in the same oil guide hole 11 for a long time.

In this embodiment, the oil guiding hole 11 is a threaded hole, the plug is provided with an external thread matched with the threaded hole, and the plug is in threaded connection with the oil guiding hole 11, so that when the hydraulic fracturing pump works, the plug basically cannot automatically leave the oil guiding hole 11 due to vibration, and the plug effectively ensures that the plug blocks the oil guiding hole 11.

In addition, this embodiment preferably sets up oil guide hole 11 and includes the first shaft section and the second shaft section that the diameter is different, and wherein, the first shaft section is close to the through-hole setting and the diameter is less than the diameter of second shaft section, and at this moment, the through-hole only is equipped with the internal thread in second shaft section department, and the end supports on the ladder face between first shaft section and second shaft section behind end cap and the through-hole threaded connection, has avoided the end of end cap to stretch into the through-hole and has taken place the possibility of interfering with the pivot of motor 20.

In this embodiment, the plug is preferably an inner hexagon bolt, the outer side of the mounting seat 10 is further provided with a countersunk hole for hiding a nut of the inner hexagon bolt, and after the inner hexagon bolt is in threaded connection with the oil guide hole 11, the nut is just hidden in the countersunk hole, so that the inner hexagon bolt is prevented from falling off from the oil guide hole 11 due to frequent external touch.

It should be noted that the hydraulic oil leaked from the shaft seal of the motor 20 basically has no large pressure, and usually flows slowly in the through hole, so when the oil guide hole 11 is closed by the plug, the hydraulic oil does not cause large pressure to the plug, and therefore the plug can also be an elastic plug or a wooden plug, which is in interference fit with the oil guide hole 11, and can also complete the plugging of the oil guide hole 11.

In this embodiment, there are a plurality of first gears, and the number of the hydraulic drive assemblies is the same as the number of the first gears and corresponds to one another.

Preferably, the number of the hydraulic driving assemblies and the number of the first gears are six, the six hydraulic driving assemblies are identical in structure and respectively comprise a motor 20 in driving connection with the corresponding first gear and a mounting seat 10 provided with an oil guide hole 11, and the six first gears drive the second gear to rotate together, so that the power requirement of the hydraulic fracturing pump is met.

In this embodiment, each hydraulic driving assembly includes two mounting seats 10 and two motors 20, the two motors 20 are respectively mounted on the two mounting seats 10, one end of the gear shaft of the first gear is in driving connection with one motor 20, and the other end of the gear shaft of the first gear is in driving connection with the other motor 20.

That is, the two motors 20 drive a first gear to rotate together, so that the torque between the first gear and the second gear is increased, and the power requirement of the hydraulic fracturing pump is further ensured.

It should be noted that, in the case of conflict, the features in the embodiments of the present invention may be combined with each other.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic fracturing pump is characterized by comprising a hydraulic driving component, a gear box and a plug;

the hydraulic drive assembly comprises a motor (20) installed on the gear box, the motor (20) is in drive connection with a first gear in the gear box, the hydraulic drive assembly and/or the gear box are/is provided with an oil guide hole (11) used for enabling a shaft seal of the motor (20) to be communicated with the outside, the plug is detachably installed on the oil guide hole (11), and oil leaking from the shaft seal can be guided to the outside through the oil guide hole (11).

2. The hydraulic fracturing pump of claim 1, wherein the hydraulic drive assembly further comprises a mount (10), the motor (20) being mounted to the mount (10), the mount (10) being fixedly mounted to the gearbox.

3. The hydraulic fracturing pump of claim 2, wherein the mounting seat (10) is installed between the motor (20) and the gearbox, the mounting seat (10) is provided with a through hole, the through hole is sleeved on a rotating shaft of the motor (20), one end of the through hole is communicated with a shaft seal of the motor (20), the other end of the through hole is communicated with the gearbox, and the oil guide hole (11) is arranged in the mounting seat (10) and is communicated with the through hole.

4. The hydraulic fracturing pump of claim 3, wherein the axis of the oil guide hole (11) extends in the radial direction of the through hole, and the oil guide hole (11) is arranged at one end of the mounting seat (10) close to the shaft seal of the motor (20).

5. The hydraulic fracturing pump according to claim 4, wherein the number of the oil guide holes (11) on each mounting seat (10) is multiple, and at least one oil guide hole (11) is arranged at the opening of the outer wall of the mounting seat (10) and faces downwards.

6. The hydraulic fracturing pump according to claim 5, characterized in that the number of oil guide holes (11) on each of the mounting seats (10) is two.

7. The hydraulic fracturing pump according to any one of claims 1 to 6, wherein the oil guide hole (11) is a threaded hole and the plug is provided with an external thread matching the threaded hole.

8. The hydraulic fracturing pump of claim 7, wherein the bulkhead comprises a socket head cap bolt.

9. The hydraulic fracturing pump of any one of claims 2 to 6, wherein there are a plurality of the first gears, and the number of the hydraulic drive assemblies is the same as the number of the first gears and corresponds to one.

10. The hydraulic fracturing pump of claim 9, wherein each of the hydraulic drive assemblies comprises two of the mounts (10) and two of the motors (20), the two motors (20) being mounted to the two mounts (10), respectively, one end of the gear shaft of the first gear being in driving connection with one of the motors (20) and the other end being in driving connection with the other motor (20).