CN112302814B - Fracturing truck and control method thereof - Google Patents
Fracturing truck and control method thereof Download PDFInfo
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- CN112302814B CN112302814B CN202011199951.8A CN202011199951A CN112302814B CN 112302814 B CN112302814 B CN 112302814B CN 202011199951 A CN202011199951 A CN 202011199951A CN 112302814 B CN112302814 B CN 112302814B
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- 230000001276 controlling effect Effects 0.000 abstract description 19
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000009125 negative feedback regulation Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000003795 chemical substances by application Substances 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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Abstract
The invention provides a fracturing truck and a control method thereof, which relate to the technical field of engineering machinery and comprise the following steps: the controller is electrically connected with the engine, the first rotating speed sensor and the second rotating speed sensor respectively; the engine is in transmission connection with the motor, the motor is in transmission connection with the displacement pump, and the controller is used for controlling the rotating speed of the engine of the fracturing truck according to the rotating speed information of the displacement pump and the rotating speed information of the motor so as to adjust the displacement of the fracturing truck. Because there are two information channels according to which the controller acquires the rotation speed of the engine, after one of the two information channels is in fault, the controller can still acquire corresponding rotation speed information through the other rotation speed sensor, thereby normally controlling the displacement of the displacement pump, further improving the stability of the whole negative feedback regulation mechanism, ensuring that the displacement of the whole fracturing truck can be normally and accurately regulated even if one of the sensors is in fault during the work, ensuring the normal operation of the fracturing truck and improving the stability of the fracturing truck.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a fracturing truck and a control method thereof.
Background
With the rapid development of economy and the acceleration of infrastructure construction, engineering machinery plays an indispensable role therein. The engineering machine is a large machine capable of remarkably shortening the construction period, and the fracturing truck is one of the large machines, and is a special vehicle capable of injecting high-pressure and large-discharge fracturing fluid into a well, fracturing a stratum and squeezing a propping agent into a fracture. The method is mainly used for various fracturing operations of oil, gas and water wells, and can also be used for operations such as hydraulic sand blasting, coal mine high-pressure hydraulic coal mining, ship high-pressure hydraulic rust removal and the like. The equipment can perform stand-alone and on-line operation. The fracturing unit mainly comprises a vehicle carrying chassis, a vehicle platform engine, a vehicle platform transmission box, a fracturing pump, a manifold system, a lubricating system, a circuit system, a gas circuit system, a hydraulic system and the like.
The conventional fracturing truck usually needs to control the displacement of a large pump during operation, and the control mode generally adopts the displacement control through the rotating speed of an engine, the number of plungers of the large pump, the stroke, the diameter of the plungers and the gear of a transmission case. The control mode is single, and the machine can only be stopped when in failure, and cannot continuously work.
Disclosure of Invention
The invention aims to provide a fracturing truck and a control method thereof to solve the problem that the conventional fracturing truck has single control on the displacement of a large pump, aiming at overcoming the defects in the prior art.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in one aspect of the embodiments of the present invention, a fracturing truck is provided, including: the device comprises a vehicle body, an engine, a motor, a displacement pump, a first rotating speed sensor, a second rotating speed sensor and a controller, wherein the engine, the motor, the displacement pump, the first rotating speed sensor, the second rotating speed sensor and the controller are arranged on the vehicle body; the controller is electrically connected with the engine, the first rotating speed sensor and the second rotating speed sensor respectively; the motor is in transmission connection with the motor, the motor is in transmission connection with the displacement pump, the first rotation speed sensor is arranged on the displacement pump and used for collecting rotation speed information of the displacement pump of the fracturing truck, and the second rotation speed sensor is arranged on the motor and used for collecting rotation speed information of the motor of the fracturing truck; the controller is used for controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor so as to adjust the displacement of the fracturing truck.
Optionally, the fracturing truck further comprises an alarm electrically connected with the controller, and the alarm is used for giving an alarm when the numerical value of the rotation speed information of the displacement pump and/or the rotation speed information of the motor is zero.
Optionally, the alarm is a buzzer.
Optionally, the displacement pump includes a pump body and a code wheel disposed on the pump body, and the first rotational speed sensor is disposed on the code wheel.
Optionally, the fracturing truck further comprises a variable pump, and the engine is in transmission connection with the motor through the variable pump.
Optionally, the motor is a hydraulic motor.
On the other hand, the embodiment of the invention also provides a fracturing truck control method, which is applied to any one of the fracturing trucks, and the method comprises the following steps: acquiring rotation speed information of a displacement pump of the fracturing truck and rotation speed information of a motor of the fracturing truck; and controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor.
Optionally, the controlling the rotation speed of the engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor comprises: judging whether the numerical value of the rotating speed information of the displacement pump is less than or equal to zero or not; and if the value of the rotating speed information of the displacement pump is less than or equal to zero, controlling the rotating speed of the engine according to the rotating speed information of the motor.
Optionally, the controlling the rotation speed of the engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor comprises: judging whether the value of the rotating speed information of the motor is less than or equal to zero or not; and if the value of the rotating speed information of the motor is less than or equal to zero, controlling the rotating speed of the engine according to the rotating speed information of the displacement pump.
The beneficial effects of the invention include:
the invention provides a fracturing truck, comprising: the device comprises a vehicle body, an engine, a motor, a displacement pump, a first rotating speed sensor, a second rotating speed sensor and a controller, wherein the engine, the motor, the displacement pump, the first rotating speed sensor, the second rotating speed sensor and the controller are arranged on the vehicle body; the controller is electrically connected with the engine, the first rotating speed sensor and the second rotating speed sensor respectively; the motor is in transmission connection with the motor, the motor is in transmission connection with the displacement pump, the first rotating speed sensor is arranged on the displacement pump and used for collecting rotating speed information of the displacement pump of the fracturing truck, and the second rotating speed sensor is arranged on the motor and used for collecting rotating speed information of the motor of the fracturing truck; the controller is used for controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor so as to adjust the displacement of the fracturing truck. Because the controller acquires two information channels for controlling the rotating speed of the engine, namely the first rotating speed sensor and the second rotating speed sensor, after one of the two sensors fails, the controller can still acquire corresponding rotating speed information through the other rotating speed sensor, thereby normally controlling the discharge capacity of the discharge capacity pump, further improving the stability of the whole negative feedback regulation mechanism, ensuring that the discharge capacity can still be normally and accurately regulated even if one of the sensors fails during the working of the whole fracturing truck, ensuring the normal operation of the fracturing truck and improving the stability of the fracturing truck.
The invention also provides a fracturing truck control method, which comprises the steps of obtaining the rotating speed information of a displacement pump of the fracturing truck and the rotating speed information of a motor of the fracturing truck; and controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor. When the displacement control is realized, two displacement channels are obtained, namely a first rotating speed sensor and a second rotating speed sensor, so that when one of the two rotating speed sensors fails, the other rotating speed sensor can still be used for reliable data acquisition.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments 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 those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a fracturing truck according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a fracturing truck according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a fracturing truck control method according to an embodiment of the present invention;
fig. 4 is a second schematic flow chart of a fracturing truck control method according to an embodiment of the present invention;
fig. 5 is a third schematic flow chart of a fracturing truck control method according to an embodiment of the present invention;
fig. 6 is a fourth schematic flow chart of a fracturing truck control method according to an embodiment of the present invention.
Icon: 100-an engine; 200-a motor; a 300-displacement pump; 400-a controller; 500-a first rotational speed sensor; 600-a second rotational speed sensor; 700-variable pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The fracturing truck is a special vehicle for injecting high-pressure and large-discharge fracturing fluid into a well, fracturing a stratum and extruding a propping agent into a fracture. The method is mainly used for various fracturing operations of oil, gas and water wells, and can also be used for operations such as hydraulic sand blasting, coal mine high-pressure hydraulic coal mining, ship high-pressure hydraulic rust removal and the like. The equipment can perform stand-alone and on-line operation.
In one aspect of the embodiments of the present invention, referring to fig. 1, there is provided a fracturing truck including: a vehicle body, and an engine 100, a motor 200, a displacement pump 300, a first rotation speed sensor 500, a second rotation speed sensor 600, and a controller 400 provided on the vehicle body; controller 400 is electrically connected to engine 100, first rotation speed sensor 500, and second rotation speed sensor 600, respectively; the engine 100 is in transmission connection with the motor 200, the motor 200 is in transmission connection with the displacement pump 300, the first rotation speed sensor 500 is arranged on the displacement pump 300 and used for collecting rotation speed information of the displacement pump 300 of the fracturing truck, and the second rotation speed sensor 600 is arranged on the motor 200 and used for collecting rotation speed information of the motor 200 of the fracturing truck; the controller 400 is used to control the rotation speed of the motor 100 of the fracturing truck to adjust the displacement of the fracturing truck according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200.
Illustratively, as shown in fig. 1, the fracturing truck includes a truck body, an engine 100, a motor 200, a displacement pump 300, a first speed sensor 500, a second speed sensor 600 and a controller 400, wherein the engine 100, the motor 200, the displacement pump 300, the first speed sensor 500, the second speed sensor 600 and the controller 400 may be respectively disposed at different positions on the truck body, and the specific positions may be appropriately set according to actual requirements. Engine 100 may be drivingly connected to motor 200, and motor 200 may be drivingly connected to displacement pump 300 to effect starting by engine 100, driving motor 200 to operate, and thereby driving displacement pump 300 to operate. In order to realize the control of the displacement of the fracturing truck, a first rotation speed sensor 500 may be correspondingly arranged on the displacement pump 300, and simultaneously, a second rotation speed sensor 600 may also be arranged on the motor 200, the first rotation speed sensor 500 and the second rotation speed sensor 600 are respectively electrically connected with the controller 400, and simultaneously, the controller 400 is electrically connected with the engine 100, and the rotation speed information of the corresponding displacement pump 300 and the corresponding motor 200 is acquired through the first rotation speed sensor 500 and the second rotation speed sensor 600, so that the rotation speed information is used as a basis for the controller 400 to adjust the rotation speed of the engine 100, thereby realizing the precise control of the displacement pump 300 and forming negative feedback regulation. Because there are two information channels for acquiring the rotation speed of the engine 100 from the controller 400, namely the first rotation speed sensor 500 and the second rotation speed sensor 600, after one of the two information channels fails, the controller 400 can still acquire corresponding rotation speed information through the other rotation speed sensor, thereby normally controlling the displacement of the displacement pump 300, further improving the stability of the whole negative feedback regulation mechanism, ensuring that the displacement of the whole fracturing truck can be normally and accurately regulated even if one of the sensors fails during the operation of the fracturing truck, ensuring the normal operation of the fracturing truck, and improving the stability of the fracturing truck.
The adjustment mode may be that after the first rotation speed sensor 500 and the second rotation speed sensor 600 acquire the current displacement pump 300 rotation speed information and/or the motor 200 rotation speed information of the fracturing truck, the controller 400 acquires and converts the current displacement into the current displacement of the fracturing truck, and then determines whether the current displacement is within a preset displacement range, if so, the rotation speed of the engine 100 is not adjusted, and if the current displacement is greater than the preset displacement, the controller 400 adjusts the rotation speed of the engine 100 to be low according to an absolute value of a difference value between the current displacement and the preset displacement and a conversion or corresponding relationship between the absolute value and the rotation speed of the engine 100, so as to reduce the displacement of the fracturing truck and enable the displacement to meet the preset displacement range. If the displacement is smaller than the preset displacement, the controller 400 increases the rotation speed of the engine 100 according to the absolute value of the difference between the current displacement and the preset displacement and the conversion or corresponding relationship between the absolute value and the rotation speed of the engine 100, so as to increase the displacement of the fracturing truck and enable the fracturing truck to meet the preset displacement range (the same below).
In another embodiment, the first rotation speed sensor 500 and the second rotation speed sensor 600 may also acquire information at the same time, and the controller 400 receives the rotation speed information acquired by the two at the same time and converts the information through corresponding programs, so as to obtain a more accurate adjustment amount, so as to achieve more accurate control of the displacement.
Optionally, the fracturing truck further comprises an alarm, which is electrically connected to the controller 400 and is used for alarming when the value of the rotation speed information of the displacement pump 300 and/or the rotation speed information of the motor 200 is zero.
In an example, for the further improvement of the working stability of the fracturing truck, an alarm may be correspondingly arranged, when one or both of the first rotation speed sensor 500 and the second rotation speed sensor 600 fails, the alarm may be triggered to act, so as to prompt an operator of a state corresponding to a closed-loop mechanism, so that the operator can control or adjust the fracturing truck correspondingly, and further improve the working stability.
Optionally, the alarm is a buzzer, that is, the alarm is reminded by using a sound mode, and in other embodiments, the alarm may be given by using a light, a signal or the like.
Alternatively, the displacement pump 300 includes a pump body and an encoder disc disposed on the pump body, and the first rotational speed sensor 500 is disposed on the encoder disc. So that first speed sensor 500 can acquire the speed of displacement pump 300 more accurately, which is beneficial to improve the accuracy of subsequent controller 400 in adjusting the speed of engine 100.
Optionally, as shown in fig. 2, the fracturing truck further includes a variable pump 700, and the engine 100 is in transmission connection with the motor 200 through the variable pump 700.
Optionally, the motor 200 is a hydraulic motor 200. The hydraulic motor 200 may be a variable displacement motor 200 or the like.
On the other hand, the embodiment of the invention also provides a fracturing truck control method, which is applied to any one of the fracturing trucks, and the method comprises the following steps: acquiring the rotating speed information of a displacement pump 300 of the fracturing truck and the rotating speed information of a motor 200 of the fracturing truck; the rotation speed of the engine 100 of the fracturing truck is controlled according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200.
For example, as shown in fig. 3, when displacement control is performed on the fracturing truck, it may be performed by:
s010: information on the rotational speed of the displacement pump 300 of the fracturing truck and information on the rotational speed of the motor 200 of the fracturing truck are obtained.
The rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200 may be obtained by sequentially starting the operation according to a preset priority order and conditions, for example, according to a priority sensor failure, and then starting a second priority sensor to take over the operation, so as to ensure that a channel for collecting the rotation speed information is not affected. Of course, two speed sensors can work simultaneously so as to realize more accurate displacement control, and in the mode, when one speed sensor fails, the channel for acquiring the speed information can still be normally operated.
S020: the rotation speed of the engine 100 of the fracturing truck is controlled according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200.
After the controller 400 acquires the rotation speed information of the first rotation speed sensor 500 and/or the second rotation speed sensor 600, the rotation speed of the engine 100 may be adjusted according to a preset program, so that the motor 200 is driven by the engine 100, and the displacement pump 300 is driven by the motor 200 to control the displacement of the fracturing truck. When the displacement control is realized, two channels of the obtained displacement are provided, namely the first rotation speed sensor 500 and the second rotation speed sensor 600, so that when one of the two channels is in failure, the other channel can still be used for reliable data acquisition.
Optionally, the controlling the rotation speed of the engine 100 of the fracturing truck according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200 comprises: determining whether the value of the rotational speed information of the displacement pump 300 is less than or equal to zero; if the value of the rotational speed information of the displacement pump 300 is less than or equal to zero, the rotational speed of the engine 100 is controlled according to the rotational speed information of the motor 200.
For example, as shown in fig. 4, in the step of controlling the rotation speed of the engine 100 of the fracturing truck by the controller 400 according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200, the following manners may be included:
s021: it is determined whether the value of the rotational speed information of displacement pump 300 is less than or equal to zero.
S022: if the value of the rotational speed information of the displacement pump 300 is less than or equal to zero, the rotational speed of the engine 100 is controlled according to the rotational speed information of the motor 200.
The logic for starting the sensor is set to be that the first rotation speed sensor 500 is prior to the second rotation speed sensor 600, that is, the controller 400 firstly acquires the rotation speed information of the displacement pump 300 acquired by the first rotation speed sensor 500, and determines whether the value of the rotation speed information of the displacement pump 300 is less than or equal to zero, if the value is greater than zero, the rotation speed information of the displacement pump 300 is proved to be normal, and the rotation speed information of the displacement pump 300 acquired by the first rotation speed sensor 500 can be used as the basis for controlling the rotation speed of the engine 100. If the rotation speed information is less than or equal to zero, the rotation speed information of the displacement pump 300 is proved to be abnormal, and therefore, the first rotation speed sensor 500 is determined to be in fault, at this time, the controller 400 switches the rotation speed information acquisition channel, acquires the rotation speed information of the motor 200 acquired by the second rotation speed sensor 600, and adjusts the rotation speed of the engine 100 according to the rotation speed information of the motor 200. It should be noted that after the controller 400 switches from the rotation speed information acquisition mode of the displacement pump 300 to the rotation speed information acquisition mode of the motor 200, compensation or correction may be performed according to the rotation speed difference between the displacement pump 300 and the motor 200, so that the compensated or corrected value can accurately feed back the displacement information of the current displacement pump 300.
Optionally, the controlling the rotation speed of the engine 100 of the fracturing truck according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200 comprises: judging whether the value of the rotation speed information of the motor 200 is less than or equal to zero; if the value of the rotational speed information of the motor 200 is less than or equal to zero, the rotational speed of the engine 100 is controlled according to the rotational speed information of the displacement pump 300.
For example, as shown in fig. 5, in the step of controlling the rotation speed of the engine 100 of the fracturing truck by the controller 400 according to the rotation speed information of the displacement pump 300 and the rotation speed information of the motor 200, the following manners may be further included:
s023: it is determined whether the value of the rotational speed information of the motor 200 is less than or equal to zero.
S024: if the value of the rotational speed information of the motor 200 is less than or equal to zero, the rotational speed of the engine 100 is controlled according to the rotational speed information of the displacement pump 300.
The logic of sensor start is set to be that the second rotation speed sensor 600 has priority over the first rotation speed sensor 500, that is, the controller 400 first acquires the rotation speed information of the motor 200 acquired by the second rotation speed sensor 600, and determines whether the value of the rotation speed information of the motor 200 is less than or equal to zero, if the value is greater than zero, the rotation speed information of the motor 200 is proved to be normal, and the rotation speed information of the motor 200 acquired by the second rotation speed sensor 600 can be used as the basis for controlling the rotation speed of the engine 100. If the rotation speed information is less than or equal to zero, the rotation speed information of the motor 200 is proved to be abnormal, and therefore, the second rotation speed sensor 600 is determined to be in fault, at this time, the controller 400 switches the rotation speed information acquisition channel, acquires the rotation speed information of the displacement pump 300 acquired by the first rotation speed sensor 500, and adjusts the rotation speed of the engine 100 according to the rotation speed information of the displacement pump 300. It should also be noted that after the controller 400 switches from the rotational speed information acquisition mode of the motor 200 to the rotational speed information acquisition mode of the displacement pump 300, compensation or correction may be performed according to the rotational speed difference between the displacement pump 300 and the motor 200, so that the compensated or corrected value can accurately feed back the displacement information of the current displacement pump 300.
In another embodiment, as shown in fig. 6, the above two embodiments may be combined, that is, the controller 400 first performs the rotation speed sensor setting of priority before the control, that is, executes S030, and the controller 400 first selects whether the first rotation speed sensor 500 is activated in preference to the second rotation speed sensor 600 (mode one) or whether the second rotation speed sensor 600 is activated in preference to the first rotation speed sensor 500 (mode two). If the selection is mode one, S021 and S022 are executed correspondingly. If mode two is selected, then S023 and S024 are executed correspondingly.
In another embodiment, when the rotation speed information collected by the first rotation speed sensor 500 and the second rotation speed sensor 600 is less than or equal to zero, the fracturing truck enters the displacement open-loop control mode.
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 (9)
1. A fracturing truck, comprising: the device comprises a vehicle body, and an engine, a motor, a displacement pump, a first rotating speed sensor, a second rotating speed sensor and a controller which are arranged on the vehicle body; the controller is electrically connected with the engine, the first rotating speed sensor and the second rotating speed sensor respectively; the engine is in transmission connection with the motor, the motor is in transmission connection with the displacement pump, the first rotation speed sensor is arranged on the displacement pump and used for collecting rotation speed information of the displacement pump of the fracturing truck, and the second rotation speed sensor is arranged on the motor and used for collecting rotation speed information of the motor of the fracturing truck; the controller is used for controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor so as to adjust the displacement of the fracturing truck.
2. The fracturing truck of claim 1, further comprising an alarm electrically connected to the controller for alarming when the value of the rotational speed information of the displacement pump and/or the rotational speed information of the motor is zero.
3. The fracturing truck of claim 2, wherein the alarm is a buzzer.
4. The fracturing truck of claim 1, wherein the displacement pump comprises a pump body and an encoder disc disposed on the pump body, the first rotational speed sensor being disposed on the encoder disc.
5. The fracturing truck of claim 1, further comprising a variable displacement pump, said engine being drivingly connected to said motor through said variable displacement pump.
6. The fracturing truck of claim 1, wherein the motor is a hydraulic motor.
7. A fracturing truck control method applied to the fracturing truck of any one of claims 1 to 6, the method comprising:
acquiring rotation speed information of a displacement pump of the fracturing truck and rotation speed information of a motor of the fracturing truck;
and controlling the rotation speed of an engine of the fracturing truck according to the rotation speed information of the displacement pump and the rotation speed information of the motor.
8. The fracturing truck control method of claim 7, wherein said controlling a speed of an engine of the fracturing truck as a function of speed information of the displacement pump and speed information of a motor comprises:
judging whether the numerical value of the rotating speed information of the displacement pump is less than or equal to zero or not;
and if the value of the rotating speed information of the displacement pump is less than or equal to zero, controlling the rotating speed of the engine according to the rotating speed information of the motor.
9. The fracturing truck control method of claim 7, wherein said controlling a speed of an engine of the fracturing truck as a function of the rotational speed information of the displacement pump and the rotational speed information of the motor comprises:
judging whether the value of the rotating speed information of the motor is less than or equal to zero or not;
and if the value of the rotating speed information of the motor is less than or equal to zero, controlling the rotating speed of the engine according to the rotating speed information of the displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199951.8A CN112302814B (en) | 2020-10-30 | 2020-10-30 | Fracturing truck and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199951.8A CN112302814B (en) | 2020-10-30 | 2020-10-30 | Fracturing truck and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112302814A CN112302814A (en) | 2021-02-02 |
| CN112302814B true CN112302814B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011199951.8A Active CN112302814B (en) | 2020-10-30 | 2020-10-30 | Fracturing truck and control method thereof |
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