New energy vehicle lubricating system device, control method and fracturing truck

Abstract

The invention discloses a new energy vehicle lubricating system device, a control method and a fracturing truck, the lubricating system device comprises an oil path unit, an execution unit, a power unit, a detection unit, a control unit and a display unit; the oil way unit is used for providing lubricating oil for the power end of the plunger pump; the execution unit is used for providing power, heat dissipation and heating functions for the oil path unit; the power unit is used for providing electric energy for the execution unit; the detection unit is used for detecting the pressure and temperature of the oil path unit; the control unit is used for processing the detection unit and controlling and diagnosing the execution unit and the power unit; the display unit is used for displaying the working state of the lubricating system device. The system achieves the purposes of energy conservation, emission reduction, noise reduction, precise heat management and monitoring of oil temperature, early warning in advance, reduction of the maintenance cost of the pump truck, improvement of the service life of the plunger pump and improvement of the working efficiency of the plunger pump, thereby meeting the requirements of greenness, intelligence and digitization, and providing electrically-driven intelligent service for the fracturing truck.

Description

Technical Field

[0001] The present invention relates to a lubrication system device, a control method and a fracturing truck for a new energy vehicle, and belongs to the technical field of new energy petroleum equipment. Background Art

[0002] Fracturing trucks are specialized equipment used in oil and gas extraction and downhole operations. Currently, their lubrication system primarily uses a gear pump driven by the transmission to continuously lubricate the bearings and gears within the power end of the plunger pump using pressure oil. The gear pump draws lubricating oil from the oil tank through an oil suction filter, pumping it through pipelines to the power end, where it lubricates the rolling bearings and connecting rod sliding bearings via internal lubrication oil passages. If the gear oil temperature is too low, the viscosity is too high, and the fluidity is poor, insufficient lubrication can occur. If the gear oil temperature rises, the viscosity decreases, or the filter becomes clogged, the plunger pump's lubricating oil pressure can drop. This low oil pressure can lead to poor lubrication, dry grinding, and even damage to the plunger pump.

[0003] Existing fracturing trucks use engine-driven transmission shifting to adjust the plunger pump output flow. Transmission shifting doesn't allow for continuous adjustment of the plunger pump flow and can impact wellhead pressure. Furthermore, the transmission is imported, resulting in high costs. The vehicle's cooling system, which includes the engine water radiator, hydraulic oil radiator, and lubricating oil radiator, is integrated into a single, large-diameter fan, creating high noise levels. Each heat dissipation function cannot be individually controlled and precisely managed. The plunger pump lubrication system is powered by the transmission, which in turn is powered by the engine. At low engine speeds, the lubrication system's cooling and heating cycles are slow, and the circulation speed cannot be adjusted based on lubricating oil temperature to achieve rapid cooling or heating. Summary of the Invention

[0004] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a lubrication system device, a control method and a fracturing truck for a new energy vehicle. The present invention adopts a lubrication system solution for a new energy fracturing truck, and the power comes from a battery to achieve energy conservation and emission reduction; multiple low-voltage electronic fans are adopted to reduce noise; the electronic fan speed, motor speed and heater power are adjusted steplessly to achieve precise thermal management and monitoring of the oil temperature, which can provide early warning, reduce the maintenance cost of the pump truck, and increase the service life and working efficiency of the plunger pump, thereby meeting the requirements of green, intelligent and digitalization, and moving fracturing trucks towards electric drive intelligent services.

[0005] Technical solution: To solve the above technical problems, the technical solution adopted by the present invention is:

[0006] In a first aspect, a lubrication system device for a new energy vehicle includes: an oil circuit unit, an execution unit, a power unit, a detection unit, a control unit, and a display unit;

[0007] The oil circuit unit is used to provide lubricating oil to the power end of the plunger pump.

[0008] The execution unit is used to provide power, heat dissipation and heating functions for the oil circuit unit.

[0009] The power unit is used to provide electrical energy to the execution unit.

[0010] The detection unit is used to detect the pressure and temperature of the oil circuit unit.

[0011] The control unit is used for processing the detection unit, and controlling and diagnosing the execution unit and the power unit.

[0012] The display unit is used to display the working status of the lubrication system device.

[0013] Optionally, the oil circuit unit includes an oil tank, an oil pump, a radiator, and a plunger pump power end, and the oil tank, oil pump, radiator, and plunger pump power end are connected in sequence through pipelines to form a loop.

[0014] Optionally, the execution unit includes: a motor, an electronic fan, and a heater. The motor output is connected to the oil pump input via a coupling. The electronic fan is used to dissipate heat for the radiator. The heater is provided on the oil tank or in the pipeline to heat the lubricating oil.

[0015] Optionally, the power unit utilizes a power battery system. The power battery system includes a power battery and a battery controller. The battery controller controls the power battery via a CAN bus low voltage and is electrically connected to the power battery.

[0016] Optionally, the control unit includes a main controller, which controls, monitors and diagnoses the motor controller, heater controller, DCDC converter, battery controller, electronic fan, motor and power battery through the CAN bus low voltage.

[0017] Among them, the motor controller is used to control the start and stop and speed regulation of the motor.

[0018] The heater controller is used to control the start and stop and speed regulation of the heater.

[0019] The DCDC converter is used to convert electrical energy into the operating voltage of the electronic fan.

[0020] The battery controller provides power source control for the motor controller, heater controller and DCDC converter respectively.

[0021] Optionally, the detection unit includes a temperature sensor and a pressure sensor.

[0022] Wherein, the temperature sensor is used to detect the temperature of the lubricating oil in the pipeline.

[0023] The pressure sensor is used to detect the pressure in the suction filter, the pressure of the lubricating oil in the plunger pump, the pressure in the discharge filter and the pipeline pressure.

[0024] In a second aspect, a control method for a lubrication system device for a new energy vehicle specifically includes:

[0025] The collected temperature sensor signal is converted into actual temperature.

[0026] When the actual temperature is higher than the temperature parameter, a high temperature alarm is output.

[0027] When the actual temperature is in the first temperature range, the electronic fan is controlled not to work or to rotate at a low speed.

[0028] When the actual temperature is within the second temperature range, the electronic fan is controlled to operate and the fan speed varies with the temperature.

[0029] When the actual temperature is within the third temperature range, the electronic fan is controlled to operate at the maximum speed.

[0030] Collect and send battery controller information, DCDC converter information, and electronic fan information through the CAN bus.

[0031] The collected and controlled information is sent to the display unit.

[0032] Optionally, also include:

[0033] The collected temperature sensor signal is converted into actual temperature.

[0034] When the actual temperature is in the fourth temperature range, an instruction is sent to the heater controller via the CAN bus to control the heater to stop working.

[0035] When the actual temperature is in the fifth temperature range, an instruction is sent to the heater controller via the CAN bus to control the heater power to work according to the temperature change.

[0036] When the actual temperature is in the sixth temperature range, an instruction is sent to the heater controller via the CAN bus to control the heater to operate at maximum power.

[0037] Collect and send battery controller information, heater controller information, and heater information via the CAN bus.

[0038] The collected and controlled information is sent to the display unit.

[0039] Optionally, also include:

[0040] The collected temperature sensor signal is converted into actual temperature.

[0041] When the actual temperature is in the seventh temperature range, the motor runs according to the set first motor speed parameter.

[0042] When the actual temperature is in the eighth temperature interval, the motor runs according to the set second motor speed parameter.

[0043] The battery controller information, motor controller information, and motor information are collected and sent via the CAN bus.

[0044] The collected and controlled information is sent to the display unit.

[0045] Optionally, also include:

[0046] Collect pressure signals in pipelines and output alarms when signals change.

[0047] The collected pipeline pressure sensor signal is converted into actual pressure.

[0048] When the actual pressure is in the ninth pressure interval, a low pressure alarm is output.

[0049] When the actual pressure is in the tenth pressure interval, a high pressure alarm is output.

[0050] In a third aspect, a fracturing truck includes the lubrication system device and control method according to any one of the first aspect or the second aspect.

[0051] Beneficial effects: The present invention provides a new energy vehicle lubrication system device, control method and fracturing vehicle, including an oil circuit unit, an execution unit, a power supply unit, a detection unit, a control unit and a display unit; the oil circuit unit mainly includes components such as a fuel tank, an oil pump, a radiator, and a plunger pump power end, and the components are connected by pipelines; the execution unit includes a motor, an electronic fan and a heater; the motor is mechanically connected to the oil pump, the heater is installed on the fuel tank or in the pipeline, and the electronic fan is installed on the radiator; the power supply of the heater, motor and electronic fan is respectively supplied to the heater controller, motor controller and DCDC converter for conversion and output power supply through a power battery, that is, a power supply unit; a temperature sensor is installed in the fuel tank or pipeline, and the temperature sensor is electrically connected to the controller; the low-voltage bus of the power battery, heater controller, motor controller and DCDC converter is electrically connected to the vehicle controller bus; the main controller is configured to compare the detected oil temperature data with the oil temperature parameter range set therein and then control the power supply to provide power, adjust the motor speed, or the electronic fan speed, or the heater operation. The present invention is beneficial to the precise thermal management and monitoring of the oil temperature in the lubrication system of a fracturing truck, can provide early warning, reduce the maintenance cost of the fracturing truck, increase the service life and working efficiency of the plunger pump, and at the same time reduce noise.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] 1. The oil temperature of the lubrication system realizes precise thermal management and fault diagnosis, provides early warning, and improves the reliability and safety of the thermal management system.

[0054] 2. Improve the service life and working efficiency of the plunger pump and reduce the maintenance cost of the pump truck.

[0055] 3. Reduce noise.

[0056] 4. Meet the requirements of greening, intelligence and digitalization to achieve energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the overall architecture of a lubrication system device for a new energy vehicle of the present invention.

[0058] Figure 2 It is a detailed schematic diagram of a lubrication system device for a new energy vehicle of the present invention. DETAILED DESCRIPTION

[0059] The following is a clear and complete description of the technical solutions in the examples of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0060] The present invention will be further described below with reference to specific embodiments.

[0061] Example 1:

[0062] This embodiment introduces a new energy vehicle lubrication system device, such as Figure 1 As shown, it includes: an oil circuit unit, an execution unit, a power unit, a detection unit, a control unit and a display unit;

[0063] The oil circuit unit is used to provide lubricating oil to the power end of the plunger pump.

[0064] The execution unit is used to provide power, heat dissipation and heating functions for the oil circuit unit.

[0065] The power unit is used to provide electrical energy to the execution unit.

[0066] The detection unit is used to detect the pressure and temperature of the oil circuit unit.

[0067] The control unit is used for processing the detection unit, and controlling and diagnosing the execution unit and the power unit.

[0068] The display unit is used to display the working status of the lubrication system device.

[0069] like Figure 2As shown, further, in one embodiment, the oil circuit unit includes an oil tank, an oil pump, a radiator, and a plunger pump power end, and the oil tank, oil pump, radiator, and plunger pump power end are connected in sequence through pipelines to form a loop.

[0070] Furthermore, in one embodiment, the oil pump is a gear pump.

[0071] Furthermore, in one embodiment, the execution unit includes: a motor, an electronic fan, and a heater. The motor output is connected to the oil pump input via a coupling. The electronic fan is used to dissipate heat from a radiator. The heater is disposed on the oil tank or in a pipeline to heat the lubricating oil.

[0072] Furthermore, in one embodiment, the motor is a variable frequency asynchronous motor or a permanent magnet motor, and the motor speed is adjustable.

[0073] Furthermore, in one embodiment, the electronic fan is a low-voltage electronic fan, which has an adjustable speed and low noise.

[0074] Furthermore, in one embodiment, the power unit, including but not limited to a power battery system and / or a generator system, is used to provide electrical energy to the motor.

[0075] Furthermore, in one embodiment, the power battery system includes a power battery and a battery controller, wherein the battery controller controls the power battery via a CAN bus low voltage and is electrically connected to the power battery.

[0076] Furthermore, in one embodiment, the generator system includes a generator and a generator controller, wherein the generator controller controls the generator via a CAN bus low voltage and is electrically connected to the generator.

[0077] Furthermore, in one embodiment, the control unit includes a main controller, which controls, monitors and diagnoses the motor controller, heater controller, DCDC converter, power battery system and / or generator system as well as the electronic fan, motor and power battery through the CAN bus low voltage.

[0078] Among them, the motor controller is used to control the start and stop and speed regulation of the motor.

[0079] The heater controller is used to control the start and stop and speed regulation of the heater.

[0080] The DCDC converter is used to convert electrical energy into the operating voltage of the electronic fan.

[0081] The power battery system provides power source control for the motor controller, heater controller and DCDC converter respectively.

[0082] Furthermore, in one embodiment, the detection unit includes a temperature sensor and a pressure sensor.

[0083] Wherein, the temperature sensor is used to detect the temperature of the lubricating oil in the pipeline.

[0084] The pressure sensor is used to detect the pressure in the suction filter, the pressure of the lubricating oil in the plunger pump, the pressure in the discharge filter and the pipeline pressure.

[0085] The display unit includes a display, which is used to receive data information sent by the main controller. The display displays the dynamic working picture, data information and alarm information of the lubrication system device.

[0086] The lubrication system device for new energy vehicles of the present invention adopts a DC low-pressure fan with low noise; it adopts battery power to save energy and reduce emissions; in the past, the lubrication system controlled cooling simultaneously with the water radiator and hydraulic oil radiator, but now it is independently controlled, the lubrication system is highly integrated, the heating and heat dissipation lubrication system is precisely controlled and the efficiency is improved, and the control is more accurate and intelligent.

[0087] Example 2:

[0088] This embodiment introduces a control method for a lubrication system device for a new energy vehicle, which specifically includes: a main controller, preset temperature interval 1, temperature interval 2, temperature interval 3 and temperature parameters.

[0089] The main controller collects the temperature sensor signal and converts it into actual temperature.

[0090] Main controller, actual temperature is higher than temperature parameter, outputs high temperature alarm.

[0091] The main controller, when the actual temperature is in temperature range 1, controls the electronic fan to not work or to operate at a low speed.

[0092] The main controller, when the actual temperature is in temperature range 2, controls the electronic fan to work and the fan speed changes with the temperature.

[0093] The main controller controls the electronic fan to operate at the maximum speed when the actual temperature is in temperature range 3. The main controller collects and sends battery controller information, DCDC converter information, and electronic fan information via the CAN bus.

[0094] The main controller collects and controls the information and sends it to the display unit.

[0095] For example, temperature range 1: <40°C; temperature range 2: ≥40°C and <60°C; temperature range 3 ≥60°C; temperature parameter 80°C.

[0096] Furthermore, an embodiment further includes:

[0097] Main controller: Preset temperature range 4, temperature range 5, temperature range 6.

[0098] The main controller collects the temperature sensor signal and converts it into actual temperature.

[0099] The main controller, when the actual temperature is in temperature range 4, sends a command to the heater controller via the CAN bus to control the heater to stop working.

[0100] The main controller, when the actual temperature is in temperature range 5, sends instructions to the heater controller via the CAN bus to control the heater power to work according to the temperature change.

[0101] The main controller, when the actual temperature is in temperature range 6, sends instructions to the heater controller via the CAN bus to control the heater to operate at maximum power.

[0102] The main controller collects and sends battery controller information, heater controller information, and heater information through the CAN bus.

[0103] The main controller collects and controls the information sent to the display unit.

[0104] For example, temperature range 4: ≥20°C; temperature range 5: ≥0°C and <20°C; temperature range 6: <0°C.

[0105] Furthermore, an embodiment further includes:

[0106] Main control, preset temperature range 7, temperature range 8, motor speed parameter 1, motor speed parameter 2.

[0107] The main controller collects the temperature sensor signal and converts it into actual temperature.

[0108] Main controller, actual temperature is in temperature range 7, the motor runs at set speed parameter 1;

[0109] Main controller, actual temperature is in temperature range 8, the motor runs at set speed parameter 2;

[0110] The main controller collects and sends battery controller information, motor controller information, and motor information through the CAN bus.

[0111] The main controller collects and controls the information sent to the display unit.

[0112] Example: Temperature range 7: <20°C; Temperature range 8: ≥20°C,

[0113] Furthermore, an embodiment further includes:

[0114] The main controller collects the pressure signal in the pipeline and outputs an alarm when the signal changes.

[0115] Main controller: collects pipeline pressure sensor signals and converts them into actual pressure;

[0116] Main controller: preset pressure interval 9, pressure interval 10;

[0117] The main controller, when the actual pressure is in pressure range 9, outputs a low pressure alarm, for example, ≤1.5bar;

[0118] The main controller, when the actual pressure is in the pressure range 10, outputs a high pressure alarm, for example: ≥6bar;

[0119] Example 3:

[0120] This embodiment introduces a fracturing truck, including the lubrication system device and control method of any one of Embodiment 1 or Embodiment 2.

[0121] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lubrication system device for a new energy vehicle, characterized by: include: Oil circuit unit, execution unit, power unit, detection unit, control unit and display unit; The oil circuit unit is used to provide lubricating oil to the power end of the plunger pump; The execution unit is used to provide power, heat dissipation and heating functions for the oil circuit unit; The power unit is used to provide electrical energy to the execution unit; The detection unit is used to detect the pressure and temperature of the oil circuit unit; The control unit is used for processing the detection unit, and controlling and diagnosing the execution unit and the power unit; The display unit is used to display the working status of the lubrication system device.

2. A new energy vehicle lubrication system device according to claim 1, characterized in that: The execution unit includes: a motor, an electronic fan, and a heater; the motor output end is connected to the oil pump input end through a coupling, the electronic fan is used to dissipate heat for the radiator, and the heater is arranged on the oil tank or in the pipeline to heat the lubricating oil.

3. The lubrication system device for new energy vehicles according to claim 1, characterized in that: The power unit adopts a power battery system; the power battery system includes a power battery and a battery controller; wherein the battery controller controls the power battery through a CAN bus low voltage and is electrically connected to the power battery.

4. The lubrication system device for new energy vehicles according to claim 1, characterized in that: The control unit includes a main controller, which controls, monitors and diagnoses the motor controller, heater controller, DCDC converter, battery controller, electronic fan, motor and power battery through the CAN bus low voltage; Among them, the motor controller is used to control the start and stop and speed regulation of the motor; The heater controller is used to control the start and stop and speed regulation of the heater; The DCDC converter is used to convert electrical energy into the operating voltage of the electronic fan; The battery controller provides power source control for the motor controller, heater controller and DCDC converter respectively.

5. The lubrication system device for new energy vehicles according to claim 1, characterized in that: The detection unit includes a temperature sensor and a pressure sensor; Wherein, the temperature sensor is used to detect the temperature of the lubricating oil in the pipeline; The pressure sensor is used to detect the pressure in the suction filter, the pressure of the lubricating oil in the plunger pump, the pressure in the discharge filter and the pipeline pressure.

6. A control method for a lubrication system device for a new energy vehicle according to any one of claims 1 to 5, characterized in that: Specifically include: Collect temperature sensor signals and convert them into actual temperature; When the actual temperature is higher than the temperature parameter, a high temperature alarm is output; When the actual temperature is in the first temperature range, the electronic fan is controlled not to work or to rotate at a low speed; When the actual temperature is in the second temperature range, the electronic fan is controlled to operate and the fan speed varies with the temperature; When the actual temperature is within the third temperature range, the electronic fan is controlled to operate at the maximum speed; Collect and send battery controller information, DCDC converter information, and electronic fan information through the CAN bus; The collected and controlled information is sent to the display unit.

7. The control method according to claim 6, characterized in that: Also includes: Collect temperature sensor signals and convert them into actual temperature; When the actual temperature is in the fourth temperature range, a command is sent to the heater controller via the CAN bus to control the heater to stop working; When the actual temperature is in the fifth temperature range, a command is sent to the heater controller via the CAN bus to control the heater power to work according to the temperature change; When the actual temperature is in the sixth temperature range, a command is sent to the heater controller via the CAN bus to control the heater to operate at maximum power; Collect and send battery controller information, heater controller information, and heater information via the CAN bus; The collected and controlled information is sent to the display unit.

8. The control method according to claim 7, wherein: Also includes: Collect temperature sensor signals and convert them into actual temperature; When the actual temperature is in the seventh temperature range, the motor runs according to the set first motor speed parameter; When the actual temperature is in the eighth temperature range, the motor runs according to the set second motor speed parameter; Collect and send battery controller information, motor controller information, and motor information through the CAN bus; The collected and controlled information is sent to the display unit.

9. The control method according to claim 6, characterized in that: Also includes: Collect pressure signals in pipelines and output alarms when signals change; Collect pipeline pressure sensor signals and convert them into actual pressure; When the actual pressure is in the ninth pressure range, a low pressure alarm is output; When the actual pressure is in the tenth pressure interval, a high pressure alarm is output.

10. A fracturing truck, characterized by: A control method comprising a new energy vehicle lubrication system device according to any one of claims 1 to 5 and / or a new energy vehicle lubrication system device according to any one of claims 6 to 9.

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