CN218913071U - Fracturing pump driven by hydraulic system and working machine - Google Patents
Fracturing pump driven by hydraulic system and working machine Download PDFInfo
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- CN218913071U CN218913071U CN202320108166.XU CN202320108166U CN218913071U CN 218913071 U CN218913071 U CN 218913071U CN 202320108166 U CN202320108166 U CN 202320108166U CN 218913071 U CN218913071 U CN 218913071U
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Abstract
The utility model belongs to the technical field of oil and gas exploitation equipment, and particularly relates to a fracturing pump driven by a hydraulic system and an operation machine, wherein the fracturing pump driven by the hydraulic system comprises: the hydraulic oil cylinder is connected with the fracturing pump, the number of the driving pump is in one-to-one correspondence with that of the hydraulic oil cylinders, and the extending end of a piston rod of the hydraulic oil cylinder is connected with the fracturing pump. The work machine includes a fracturing pump that is driven by a hydraulic system as described above. In order to solve the problems of complex pipelines and high requirement on synchronism of a hydraulic system of the fracturing pump, the utility model adopts a mode of driving a hydraulic cylinder by a single driving pump, simplifies the pipeline design, and meanwhile, the operation machine adopting the fracturing pump has a simple structure.
Description
Technical Field
The utility model belongs to the technical field of oil and gas exploitation equipment, and particularly relates to a fracturing pump driven by a hydraulic system.
The utility model also relates to a working machine applying the fracturing pump driven by the hydraulic system.
Background
In hydrocarbon recovery processes, fracturing trucks are often used to perform operations in order to increase the production of the well. The pump truck for fracturing operation has the working principle that in the process of oil extraction or gas extraction, an oil and gas layer is cracked by pumping hydraulic power, so that the bottom hole flow condition of an oil well is improved, the interlayer flow condition is slowed down, and the yield of the oil well is increased.
The fracturing pump obtains kinetic energy from the diesel engine, converts fracturing fluid with certain viscosity under normal pressure into high-pressure and large-displacement liquid to be discharged, and is used as a medium for extruding an oil layer and supporting cracks.
At present, a hydraulic system is often adopted for driving a fracturing pump, and the whole structure of the existing hydraulic system is complex, and the requirement on the hydraulic system is high, so that the pipeline structure of an operation machine applying the fracturing pump is complex, and the whole layout is influenced.
Disclosure of Invention
In order to simplify the pipeline layout structure of a hydraulic system of a fracturing pump, the utility model provides a fracturing pump driven by the hydraulic system, which comprises the following components: the hydraulic oil fracturing device comprises a driving pump, a hydraulic oil cylinder and a fracturing pump, wherein an oil suction port of the driving pump is communicated with an oil tank, an oil outlet of the driving pump is connected with the hydraulic oil cylinder, the driving pump corresponds to the hydraulic oil cylinder in one-to-one correspondence in number and is used for driving the hydraulic oil cylinder to move, and an extending end of a piston rod of the hydraulic oil cylinder is connected with the fracturing pump.
According to the fracturing pump driven by the hydraulic system, a reversing valve is connected between the driving pump and the hydraulic cylinder.
According to the fracturing pump driven by the hydraulic system, the reversing valve is an electromagnetic reversing valve, the P port of the reversing valve is communicated with the oil outlet of the driving pump, the T port of the reversing valve is communicated with the oil tank, the A port of the reversing valve is communicated with the large cavity of the hydraulic oil cylinder, and the B port of the reversing valve is communicated with the small cavity of the hydraulic oil cylinder.
According to the fracturing pump driven by the hydraulic system, the hydraulic control one-way valve is communicated with a communication oil way between the large cavity of the hydraulic oil cylinder and the opening A of the electromagnetic reversing valve, and the oil outlet of the hydraulic control one-way valve is communicated with the oil tank.
According to the fracturing pump driven by the hydraulic system, the overflow valve is arranged on the oil outlet oil path of the driving pump, and the oil outlet of the overflow valve is communicated with the oil tank.
According to the fracturing pump driven by the hydraulic system, the displacement sensor is arranged in the hydraulic oil cylinder and used for monitoring the displacement of the piston rod of the hydraulic oil cylinder.
According to the fracturing pump driven by the hydraulic system, the displacement sensor is arranged at the stroke end of the hydraulic cylinder.
According to the fracturing pump driven by the hydraulic system, the displacement sensor is respectively connected with the reversing valve and the driving pump and is used for transmitting displacement signals to the reversing valve and the driving pump.
According to the fracturing pump driven by the hydraulic system, the hydraulic cylinders comprise a plurality of hydraulic cylinders which are arranged in parallel, and the hydraulic cylinders sequentially act to form a working cycle of the fracturing pump.
The utility model also provides a working machine, which comprises the fracturing pump driven by the hydraulic system.
The utility model has the beneficial effects that:
the fracturing pump driven by the hydraulic system is driven by the hydraulic oil cylinder, has a simple structure, is convenient to operate, adopts a mode of driving a single hydraulic oil cylinder by a single driving pump, and realizes fracturing operation by driving the reciprocating motion of the fracturing pump by the reciprocating motion of the hydraulic oil cylinder. The fracturing pump provided by the utility model adopts an open hydraulic system, so that the overall heat dissipation performance is good, an auxiliary system is not needed, and the structure of a pipeline is further simplified.
The pipeline structure of the operation machinery adopting the fracturing pump driven by the hydraulic system is simple in design and good in overall heat dissipation performance.
Drawings
In order to more clearly illustrate the utility model or the technical solutions in the related art, the drawings used in the description of the embodiments or the related art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydraulic system driven fracturing pump of the present utility model;
FIG. 2 is a diagram of the phase sequence control relationship between hydraulic cylinders in a fracturing pump driven by a hydraulic system provided by the utility model;
fig. 3 is a motion pattern diagram of a hydraulic cylinder in a fracturing pump driven by a hydraulic system.
Reference numerals:
1. driving a pump; 2. a reversing valve; 3. a hydraulic cylinder; 4. a fracturing pump; 5. a hydraulically controlled one-way valve; 6. and an overflow valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "vertical," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The hydraulic system driven fracturing pump and work machine of the present utility model will be described with reference to fig. 1-3.
Fig. 1 is a hydraulic schematic diagram of a fracturing pump driven by a hydraulic system according to the present utility model, and as can be seen from the figure, the hydraulic system of the fracturing pump is an open system, a mode of driving a single hydraulic cylinder 3 by a single driving pump 1 is adopted, and the reciprocating motion of the hydraulic cylinder 3 is realized by a reversing valve 2, so as to drive a fracturing pump 4 to reciprocate, thereby completing the functions of water absorption and water pumping of the fracturing pump 4 and completing fracturing operation. Compared with the existing hydraulic system which adopts the mode that a main oil pump drives two oil cylinders, the two oil cylinders are connected in series, an oil inlet of an electromagnetic reversing valve is provided with an oil supplementing loop, oil return is connected with a main pump oil suction, and an auxiliary system is used for system heat dissipation and main pump oil supplementing, the fracturing pump driven by the hydraulic system has the advantages of simple structure, convenience in operation, low requirement on synchronism, good heat dissipation performance, no auxiliary system is needed to help the system to dissipate heat, and further the complexity of the whole structure is simplified.
As shown in fig. 2, the fracturing pump 4 of the fracturing pump driven by the hydraulic system is driven by a plurality of hydraulic cylinders 3, displacement of each hydraulic cylinder 3 is monitored through a displacement sensor, and meanwhile, the displacement sensor is communicated with the reversing valve 2 and the driving pump 1 to realize phase control among the hydraulic cylinders 3, so that one working cycle of the fracturing pump 4 is formed.
As shown in fig. 3, the motion law of extension and retraction of the hydraulic cylinder 3 in one period is shown, in the figure, T represents the period of motion of the hydraulic cylinder, V1 represents the extension speed of the hydraulic cylinder, V2 represents the retraction speed of the hydraulic cylinder, and the negative sign represents the opposite motion direction of the hydraulic cylinder. The o-a section is the acceleration extension of the hydraulic cylinder 3, the b-c section is the deceleration extension of the hydraulic cylinder 3, the c-d section is the acceleration retraction of the hydraulic cylinder 3, and the d-e section is the deceleration retraction of the hydraulic cylinder 3, so that the hydraulic cylinder 3 slowly extends and rapidly retracts, the working efficiency of the hydraulic cylinder 3 in one period is ensured, the impact on the fracturing pump 4 is reduced, and the service life of the fracturing pump 4 is prolonged.
According to an embodiment of the first aspect of the present utility model, as shown in fig. 1, the method includes: the hydraulic oil cylinder device comprises a driving pump 1, a hydraulic oil cylinder 3 and a fracturing pump 4, wherein an oil suction port of the driving pump 1 is communicated with an oil tank, an oil outlet of the driving pump 1 is connected with the hydraulic oil cylinder 3, the number of the driving pump 1 and the number of the hydraulic oil cylinder 3 are in one-to-one correspondence, the driving pump is used for driving the hydraulic oil cylinder 3 to move, and an extending end of a piston rod of the hydraulic oil cylinder 3 is connected with the fracturing pump 4.
The hydraulic system of the fracturing pump is simple in structure, the number of the driving pumps 1 and the number of the hydraulic cylinders 3 are correspondingly set, and the mode that the single driving pump 1 drives the single hydraulic cylinder 3 is adopted, so that the structural arrangement of a pipeline is simplified, structural redundancy is avoided, and the design cost is reduced. The hydraulic system of the fracturing pump is an open type hydraulic system, is simple in structure and good in heat dissipation, does not need an auxiliary heat dissipation system, and further simplifies the structure of a pipeline.
Through the fracturing pump of this embodiment, the driving pump 1 drives the hydraulic cylinder 3 to make it reciprocate, and then the reciprocating motion of the hydraulic cylinder 3 drives the reciprocating motion of the fracturing pump 4 to make it realize the functions of 'water pumping and water absorbing', so as to complete the fracturing operation.
In one embodiment of the present utility model, a reversing valve 2 is connected between the drive pump 1 and the hydraulic cylinder 3, and the reciprocating motion of the hydraulic cylinder 3 is completed through the reversing valve 2.
In one embodiment of the utility model, the reversing valve 2 is a three-position four-way electromagnetic reversing valve, the port P of which is communicated with the oil outlet of the driving pump 1, the port T of which is communicated with the oil tank, the port A of which is communicated with the large cavity of the hydraulic cylinder 3, and the port B of which is communicated with the small cavity of the hydraulic cylinder 3.
The oil way process for realizing the reciprocating motion of the fracturing pump 4 is as follows: the driving pump 1 absorbs oil from the oil tank through the oil absorption port, the oil outlet of the driving pump 1 is communicated with the P port of the electromagnetic reversing valve, the A port and the B port of the working port of the electromagnetic reversing valve are respectively connected with the large cavity and the small cavity of the hydraulic oil cylinder 3, and the T port of the electromagnetic reversing valve directly returns to the oil tank. The pump 1 is driven to variably adjust the speed of the hydraulic oil cylinder 3, and the electromagnetic reversing valve is powered on and off by the left electromagnet and the right electromagnet to realize the reciprocating motion of the hydraulic oil cylinder 3, so that the reciprocating motion of the fracturing pump 4 is driven.
In one embodiment of the utility model, a hydraulic control one-way valve 5 is communicated with a communication oil way between a large cavity of the hydraulic oil cylinder 3 and an opening A of the electromagnetic directional valve, and an oil outlet of the hydraulic control one-way valve 5 is communicated with an oil tank.
When the hydraulic oil cylinder 3 is retracted, due to the difference of the areas of the large cavity and the small cavity, the flow flowing into and out of the hydraulic oil cylinder 3 has deviation, at the moment, the hydraulic control one-way valve 5 is opened, a part of flow can be directly returned to the oil tank, the requirement on the flow capacity of the electromagnetic reversing valve is reduced, the impact of the flow on the electromagnetic reversing valve is reduced, and the service life of the electromagnetic reversing valve is prolonged.
In one embodiment of the utility model, the oil outlet of the drive pump 1 is provided with an overflow valve 6, and the oil outlet of the overflow valve 6 is communicated with the oil tank.
By arranging the overflow valve 6, the pressure of the hydraulic system is convenient to adjust, and the constant pressure overflow and the safety protection function are achieved on the hydraulic system. When the pressure of the hydraulic system is increased, the flow demand is reduced, and at the moment, the overflow valve 6 is opened, so that the redundant flow overflows back to the oil tank, and the inlet pressure of the overflow valve 6, namely the outlet pressure of the driving pump 1 is ensured to be constant; when the load exceeds a specified limit, overflow is opened, overload protection is performed, and the pressure of the system is not increased any more.
In one embodiment of the utility model, a displacement sensor is arranged inside the hydraulic cylinder 3 and is used for monitoring the displacement of a piston rod of the hydraulic cylinder 3 in real time so as to avoid over-travel.
In one embodiment of the utility model, the displacement sensor is arranged at the end of the stroke of the hydraulic ram 3.
In addition, the position of the displacement sensor may be provided on the piston rod of the hydraulic cylinder 3 in addition to the stroke end of the hydraulic cylinder 3, so long as the displacement of the piston rod of the hydraulic cylinder 3 can be monitored, and the overstroke can be avoided, and therefore, the present utility model is not limited to the single one.
In one embodiment of the utility model, displacement sensors are connected to the reversing valve 2 and the drive pump 1, respectively, for transmitting displacement signals to the reversing valve 2 and the drive pump 1.
When the piston rod of the hydraulic cylinder 3 moves to the end of the stroke, the displacement sensor transmits the monitored displacement signal to the reversing valve 2, so that the reversing valve 2 reverses and the reciprocating motion of the hydraulic cylinder 3 is completed.
In one embodiment of the present utility model, as shown in fig. 2, the hydraulic cylinder 3 includes a plurality of hydraulic cylinders 3 arranged in parallel, and the plurality of hydraulic cylinders 3 sequentially operate to form one working cycle of the fracturing pump 4. The number of the driving pumps 1, the reversing valves 2 and the hydraulic cylinders 3 can be adapted according to the parameters of the main truck of the fracturing truck. The displacement sensor monitors the displacement of the piston rod of each hydraulic cylinder 3, and meanwhile, the displacement sensor is communicated with the reversing valve 2 and the driving pump 1, so that the phase control among the hydraulic cylinders 3 is realized.
The fracturing pump driven by the hydraulic system has a simple structure, an open type hydraulic system is adopted, the heat dissipation performance is good, the single hydraulic cylinder 3 is driven by the single driving pump 1, the pipeline arrangement is simplified, the reciprocating motion of the hydraulic cylinder 3 is completed, the reciprocating motion of the fracturing pump 4 is further realized, and the fracturing work is completed. The hydraulic oil cylinder control device is provided with a plurality of hydraulic oil cylinders 3, and the displacement signals of the monitored hydraulic oil cylinders 3 are transmitted to the reversing valve 2 and the driving pump 1 through the displacement sensor, and phase differences are established among different hydraulic oil cylinders 3 through communication, so that phase sequence control among different hydraulic oil cylinders 3 is more flexible, further displacement fluctuation of the fracturing pump 4 is reduced, the displacement of the driving pump 1 is reduced in a deceleration section of the hydraulic oil cylinders 3, impact of flow on a hydraulic system is reduced, and the service life of the system is prolonged. Furthermore, the design and application system of the hydraulic ram 3 is mature, so that the total cost is reduced.
According to the second aspect of the present utility model, the present utility model further provides a working machine, including the hydraulic system-driven fracturing pump described in the above embodiment, which may be applied to a working machine adapted to a fracturing truck, a fracturing device, or the like, and the type of the working machine is not limited, so long as the working machine can apply the hydraulic system-driven fracturing pump described in the present utility model, and other structures on the working machine except the fracturing pump adopt conventional devices in the art, so that details will not be repeated herein.
By adopting the fracturing pump driven by the hydraulic system, the whole structure of the working machine is simplified, the structure of the working machine is simpler, and the production cost of the working machine is reduced.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A fracturing pump driven by a hydraulic system, comprising: the hydraulic oil fracturing device comprises a driving pump (1), a hydraulic oil cylinder (3) and a fracturing pump (4), wherein an oil suction port and an oil tank of the driving pump (1) are communicated, an oil outlet of the driving pump (1) is connected with the hydraulic oil cylinder (3), the driving pump (1) corresponds to the number of the hydraulic oil cylinders (3) one by one and is used for driving the hydraulic oil cylinders (3) to move, and an extending end of a piston rod of the hydraulic oil cylinder (3) is connected with the fracturing pump (4).
2. The fracturing pump driven by a hydraulic system according to claim 1, characterized in that a reversing valve (2) is connected between the driving pump (1) and the hydraulic cylinder (3).
3. The fracturing pump driven by a hydraulic system according to claim 2, characterized in that said reversing valve (2) is an electromagnetic reversing valve, the P port of which communicates with the oil outlet of said driving pump (1), the T port of which communicates with the oil tank, the a port of which communicates with the large chamber of said hydraulic cylinder (3), and the B port of which communicates with the small chamber of said hydraulic cylinder (3).
4. A fracturing pump driven by a hydraulic system according to claim 3, wherein a hydraulic control one-way valve (5) is communicated with a communication oil way between a large cavity of the hydraulic oil cylinder (3) and an opening A of the electromagnetic directional valve, and an oil outlet of the hydraulic control one-way valve (5) is communicated with an oil tank.
5. The fracturing pump driven by a hydraulic system according to claim 1, characterized in that an overflow valve (6) is arranged on an oil outlet oil path of the driving pump (1), and an oil outlet of the overflow valve (6) is communicated with an oil tank.
6. A fracturing pump driven by a hydraulic system according to claim 2, characterized in that a displacement sensor is arranged inside the hydraulic cylinder (3) for monitoring the displacement of the piston rod of the hydraulic cylinder (3).
7. The hydraulic system driven fracturing pump according to claim 6, characterized in that said displacement sensor is arranged at the end of travel of said hydraulic cylinder (3).
8. The fracturing pump driven by a hydraulic system according to claim 6, characterized in that said displacement sensor is connected to said reversing valve (2) and to said driving pump (1), respectively, for transmitting displacement signals to said reversing valve (2) and to said driving pump (1).
9. A fracturing pump driven by a hydraulic system according to any of claims 1-8, characterized in that said hydraulic cylinder (3) comprises a plurality of said hydraulic cylinders (3) arranged in parallel, acting in sequence, forming a working cycle of said fracturing pump (4).
10. A work machine, comprising:
a fracturing pump driven by a hydraulic system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320108166.XU CN218913071U (en) | 2023-02-03 | 2023-02-03 | Fracturing pump driven by hydraulic system and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320108166.XU CN218913071U (en) | 2023-02-03 | 2023-02-03 | Fracturing pump driven by hydraulic system and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913071U true CN218913071U (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320108166.XU Active CN218913071U (en) | 2023-02-03 | 2023-02-03 | Fracturing pump driven by hydraulic system and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913071U (en) |
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2023
- 2023-02-03 CN CN202320108166.XU patent/CN218913071U/en active Active
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