Electric control system of fracturing truck

Abstract

The invention discloses an electric control system of a fracturing truck. The system comprises a fracturing truck electric control room and a fracturing truck control unit in remote communication connection with the fracturing truck electric control room. The fracturing truck electric control room is connected with a fracturing motor on the fracturing truck frame through a high-voltage cable; the fracturing truck electric control room is used for controlling a fracturing motor according to the fracturing truck displacement adjusting instruction and the fracturing truck set total displacement adjusting instruction so as to realize self-adaptive control of the fracturing truck set; the fracturing truck control unit is used for generating a fracturing truck displacement adjusting instruction and a fracturing truck set total displacement adjusting instruction according to the maximum capacity of the high-voltage power grid of the fracturing truck set in combination with the multi-path power grid load distribution problem and the high-load-rate tripping problem in the fracturing construction process. According to the invention, not only are automatic control and remote operation of the fracturing truck set realized, but also automatic intervention and self-adaptive control of the power grid capacity and the fracturing truck set are realized by combining a multi-path power grid load distribution problem and a high-load-rate tripping problem in the fracturing construction process.

Description

Technical Field

[0001] The invention relates to the field of fracturing unit driving, and in particular to an electronic control system for a fracturing vehicle. Background Art

[0002] Due to the various power supply methods for fracturing trucks and the limitations of some power grids, many fracturing platforms have multiple power supplies, including multiple city power supplies with limited capacity, gas turbine power generation, and other power generation methods. During the construction process, when an unexpected accident causes the fracturing truck to shut down abnormally, some power grids will face the risk of tripping, and there will be problems with the load distribution of multiple power grids and tripping at high load rates. In response to this situation, the existing system requires manual intervention to adjust the load distribution of the fracturing trucks under each power grid inlet line, which will cause a lag in the displacement distribution of the fracturing truck group and increase labor costs. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an electronic control system for a fracturing truck.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A fracturing truck electric control system, comprising an electric control room of the fracturing truck and a control unit of the fracturing truck connected to the electric control room of the fracturing truck via remote communication;

[0006] The fracturing truck electrical control room is connected to the fracturing motor on the fracturing truck frame through a high-voltage cable; the fracturing truck electrical control room is used to obtain the real-time power of the fracturing truck, and control the fracturing motor according to the fracturing truck displacement adjustment command and the total displacement adjustment command of the fracturing truck group, so as to realize the adaptive control of the fracturing truck group;

[0007] The fracturing truck control unit is used to generate fracturing truck displacement adjustment instructions and fracturing truck group total displacement adjustment instructions according to the maximum capacity of the high-voltage power grid of the fracturing truck group and the real-time power of the fracturing truck, combined with the multi-circuit power grid load distribution problem and high load rate tripping problem during the fracturing construction process.

[0008] Furthermore, the electrical control room of the fracturing truck is divided into a transformer room and a frequency converter room; the transformer room is used to place a rectifier transformer; the frequency converter room is used to place a high-voltage frequency converter, a high-voltage switch cabinet, and a communication module that is remotely connected to the control unit of the fracturing truck.

[0009] Furthermore, both the inverter room and the transformer room adopt an improved multi-layer filter structure; the first layer of the multi-layer filter structure is a herringbone louver, the second layer of the multi-layer filter structure is a grid-type metal mesh, and the third layer of the multi-layer filter structure is a primary filter cotton.

[0010] Furthermore, an inverter fan unit is provided at the connection between the upper rear end of the high-voltage inverter in the inverter room and the back frame of the high-voltage inverter, and the air outlet of the inverter fan unit is connected to the air outlet on the wall of the inverter room by a mechanical air duct; the rectifier transformer is separated from the middle by an insulating plate in the transformer room, a transformer fan unit is provided at the top front end of the transformer room, and an insulating air guide tube is provided between the transformer fan unit and the transformer room.

[0011] Furthermore, the rectifier transformer adopts a 36-pulse rectifier transformer, and its secondary side has 6 phase shift groups, and the angle difference of each phase shift group is 10°; the high-voltage inverter adopts a high-voltage nine-level inverter.

[0012] Furthermore, the bottoms of the rectifier transformer, the high-voltage frequency converter and the high-voltage switch cabinet are all provided with shock-absorbing dampers consisting of shock-absorbing cylinders and shock-absorbing pads.

[0013] Furthermore, one end of the high-voltage cable is connected to the high-voltage connector at the rear of the fracturing vehicle, and the other end of the high-voltage cable is connected to the high-voltage switch cabinet with a cold shrink cable connector. The high-voltage switch cabinet, the rectifier transformer, and the high-voltage inverter are connected in sequence through the high-voltage cable, and the high-voltage inverter is connected to the fracturing motor on the fracturing vehicle frame.

[0014] Furthermore, the fracturing truck control unit includes a calculation module, a first judgment module, a second judgment module, a fault judgment module, and an adjustment instruction generation module;

[0015] The calculation module is used to calculate the high-voltage power grid adjustment coefficient according to the maximum capacity of the high-voltage power grid of the fracturing vehicle group and generate a first judgment instruction, calculate the displacement of the fracturing vehicle in the stable displacement increase stage according to the first judgment correct instruction, calculate the actual displacement of each fracturing vehicle when the set pump group displacement is reached according to the second judgment correct instruction and the high-voltage power grid adjustment coefficient, calculate the displacement of the fracturing vehicle after allocating the lost displacement according to the fault instruction and the actual displacement of each fracturing vehicle when the set pump group displacement is reached, and calculate the displacement of the fracturing vehicle after allocating the maximum displacement difference according to the real-time power of the fracturing vehicle and the maximum capacity of the high-voltage power grid of the fracturing vehicle group;

[0016] The first judgment module is used to judge whether the displacement of the fracturing vehicle group is less than the low displacement threshold according to the first judgment instruction; if so, a first judgment correct instruction is generated, otherwise a second judgment instruction is generated;

[0017] The second judgment module is used to judge whether the set vehicle group displacement is greater than the total displacement of the stable displacement increase stage according to the second judgment instruction; if so, a second judgment correct instruction is generated, otherwise, a first judgment instruction is generated;

[0018] The fault judgment module is used to judge whether the fracturing vehicle has a fault; if so, a fault instruction is generated, otherwise no fault instruction is generated;

[0019] The adjustment instruction generating module is used to generate the displacement adjustment instruction of the fracturing truck and the total displacement adjustment instruction of the fracturing truck group according to the displacement of the fracturing truck in the stable displacement increase stage, the displacement of the fracturing truck after allocating the loss displacement and the displacement of the fracturing truck after allocating the maximum displacement difference.

[0020] The present invention has the following beneficial effects:

[0021] (1) The present invention provides a fracturing vehicle control room and a fracturing vehicle control unit that is remotely connected to the fracturing vehicle control room; the fracturing vehicle control room is connected to the fracturing motor on the fracturing vehicle frame through a high-voltage cable; the fracturing vehicle control room is used to obtain the real-time power of the fracturing vehicle, and control the fracturing motor according to the fracturing vehicle displacement adjustment instruction and the total displacement adjustment instruction of the fracturing vehicle group, so as to achieve adaptive control of the fracturing vehicle group; the fracturing vehicle control unit is used to generate the fracturing vehicle displacement adjustment instruction and the total displacement adjustment instruction of the fracturing vehicle group according to the maximum capacity of the high-voltage power grid of the fracturing vehicle group and the real-time power of the fracturing vehicle, in the fracturing construction process, in combination with the multi-circuit power grid load distribution problem and the high load rate tripping problem; not only the automatic control and remote operation of the fracturing vehicle group are achieved, but also the automatic intervention and the adaptive control of the power grid capacity and the fracturing vehicle group are achieved in combination with the multi-circuit power grid load distribution problem and the high load rate tripping problem during the fracturing construction process;

[0022] (2) The present invention solves the technical problem of reducing sand and dust and improving water repellency while using a forced air cooling structure to dissipate heat by adopting an improved multi-layer filter structure in both the inverter room and the transformer room;

[0023] (3) The present invention adopts the design of fan unit and air duct in the inverter room and transformer room to replace the original air conditioning heat dissipation method, which can reduce the overall energy consumption of the heat dissipation system;

[0024] (4) The present invention can achieve magnetic circuit shielding and electric shielding by adopting a 36-pulse rectifier transformer and a high-voltage nine-level inverter, effectively suppressing harmonic currents, eliminating the harm of harmonics to the power grid and communication modules, and reducing the no-load loss and load loss of the rectifier transformer;

[0025] (5) The present invention provides a shock-absorbing damper having a shock-absorbing cylinder and a shock-absorbing pad, and the shock-absorbing cylinder and the shock-absorbing pad absorb the energy generated by external vibration, thereby achieving the purpose of shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of an electronic control system for a fracturing truck;

[0027] Figure 2 This is a structural diagram of the electric control room of the fracturing truck;

[0028] Figure 3 This is a schematic diagram of the heat dissipation device structure in the inverter room;

[0029] Figure 4 This is a schematic diagram of the structure of the indoor heat dissipation device of the transformer;

[0030] Figure 5 It is a schematic diagram of the connection relationship between the rectifier transformer and the high-voltage inverter;

[0031] Figure 6 It is a schematic diagram of the structure of the shock absorbing damper;

[0032] Among them: 1. Car skid; 2. Fracturing vehicle control room; 3. Inverter fan unit; 4. Air outlet of inverter fan unit; 5. Air outlet on the wall of inverter room; 6. Mechanical air duct; 7. Insulation board; 8. Transformer fan unit; 9. Insulation air guide tube; 10. Shock-absorbing cylinder; 11. Shock-absorbing pad; 12. 36-pulse rectifier transformer; 13. High-voltage nine-level inverter. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0034] like Figure 1 As shown, a fracturing truck electronic control system includes a fracturing truck electronic control room and a fracturing truck control unit remotely connected to the fracturing truck electronic control room.

[0035] In an optional embodiment of the present invention, the fracturing truck control room is connected to the fracturing motor on the fracturing truck frame through a high-voltage cable; the fracturing truck control room is used to obtain the real-time power of the fracturing truck, and control the fracturing motor according to the fracturing truck displacement adjustment instruction and the fracturing truck group total displacement adjustment instruction, so as to realize the adaptive control of the fracturing truck group. The fracturing truck control room performs the fracturing truck displacement adjustment operation according to the fracturing truck displacement adjustment instruction; the fracturing truck control room performs the operation of reducing the total displacement of the fracturing truck group according to the fracturing truck group total displacement adjustment instruction.

[0036] like Figure 2 As shown, the electric control room 2 of the fracturing truck is arranged at the front end of the skid 1. The electric control room of the fracturing truck is made of all-aluminum alloy material, which effectively reduces the total weight of the room and is conducive to the realization of the vehicle-mounted structure.

[0037] The electrical control room of the fracturing truck is divided into a transformer room and a frequency converter room; the transformer room is used to place the rectifier transformer; the frequency converter room is used to place the high-voltage frequency converter, high-voltage switchgear and the communication module that is remotely connected to the control unit of the fracturing truck.

[0038] Both the inverter room and the transformer room adopt an improved multi-layer filter structure; the first layer of the multi-layer filter structure is a herringbone louver, the second layer of the multi-layer filter structure is a grid-type metal mesh, and the third layer of the multi-layer filter structure is a primary filter cotton.

[0039] Specifically, the first layer of the multi-layer filter structure is a herringbone louver, which can greatly increase the water repellency compared to the traditional S-shaped louver without affecting the wind speed. The second layer of the multi-layer filter structure is a mesh-type metal mesh, which is used for preliminary sand filtering and water repellency. The third layer of the multi-layer filter structure uses primary filter cotton for filtering sand and water. Each layer of the multi-layer filter structure is an independent mechanism, and the present invention can replace one of the layers according to usage requirements. The three-layer structure of the multi-layer filter structure has an overall frame, which is fixed by a mechanical limit lock. The improved multi-layer filter structure is connected to the inverter room and the transformer room by bolts.

[0040] like Figure 3 As shown, a frequency converter fan unit 3 is provided at the connection between the upper rear end of the high-voltage frequency converter in the frequency converter room and the back frame of the high-voltage frequency converter, and the air outlet 4 of the frequency converter fan unit is connected to the air outlet 5 on the wall of the frequency converter room by a mechanical air duct 6. Figure 4 As shown, an insulating plate 7 is used in the transformer room to separate the rectifier transformer from the middle, a transformer fan unit 8 is arranged at the top of the front end of the transformer room, and an insulating air guide tube 9 is arranged between the transformer fan unit and the transformer room.

[0041] Specifically, the inverter room and transformer room use the design of fan units and air ducts to replace the original air conditioning heat dissipation method, which can reduce the overall energy consumption of the heat dissipation system. In addition, the front walls of the inverter room and transformer room are equipped with air inlet louvers and filters to accelerate the heat dissipation process.

[0042] like Figure 5 As shown, the rectifier transformer adopts a 36-pulse rectifier transformer 12, and its secondary side has 6 phase shift groups, and the angle difference of each phase shift group is 10°; the high-voltage inverter adopts a high-voltage nine-level inverter 13.

[0043] Specifically, the phase shift angles of each phase shift group are +25°, +15°, +5°, -5°, -15° and -25°. The present invention can achieve magnetic circuit shielding and electric shielding by adopting a 36-pulse rectifier transformer and a high-voltage nine-level inverter, effectively suppressing harmonic current, eliminating the harm of harmonics to the power grid and communication module, and reducing the no-load loss and load loss of the rectifier transformer.

[0044] The bottom of the rectifier transformer, high-voltage frequency converter, and high-voltage switch cabinet are all provided with a shock-absorbing damper including a shock-absorbing cylinder 10 and a shock-absorbing pad 11. Figure 6 shown.

[0045] Specifically, the present invention provides a shock-absorbing damper with a shock-absorbing cylinder and a shock-absorbing pad, and the shock-absorbing cylinder and the shock-absorbing pad absorb the energy generated by external vibration, thereby achieving the purpose of shock absorption. The shock-absorbing damper in the present invention is selected and installed in combination with the operating conditions and equipment weight of the electric fracturing vehicle, which is expressed as:

[0046] m*k / n=p

[0047] Where: m is the weight of the electronic control equipment, k is the operating weight coefficient, n is the number of shock absorbers, and p is the load of a single shock absorber.

[0048] One end of the high-voltage cable is connected to the high-voltage connector at the rear of the fracturing vehicle, and the other end of the high-voltage cable is connected to the high-voltage switch cabinet with a cold shrink cable connector. The high-voltage switch cabinet, rectifier transformer, and high-voltage inverter are connected in sequence through the high-voltage cable, and the high-voltage inverter is connected to the fracturing motor on the fracturing vehicle frame.

[0049] Specifically, the fracturing motor is connected to the electric fracturing pump.

[0050] In an optional embodiment of the present invention, the fracturing truck control unit is used to generate a fracturing truck displacement adjustment instruction and a fracturing truck group total displacement adjustment instruction according to the maximum capacity of the high-voltage power grid of the fracturing truck group and the real-time power of the fracturing truck, combined with the multi-circuit power grid load distribution problem and the high load rate tripping problem during the fracturing construction process.

[0051] The fracturing truck control unit includes a calculation module, a first judgment module, a second judgment module, a fault judgment module, and an adjustment instruction generation module.

[0052] The calculation module is used to calculate the high-voltage power grid regulation coefficient according to the maximum capacity of the high-voltage power grid of the fracturing vehicle group and generate a first judgment instruction, calculate the displacement of the fracturing vehicle in the stable displacement increase stage according to the first judgment correct instruction, calculate the actual displacement of each fracturing vehicle when the set pump group displacement is reached according to the second judgment correct instruction and the high-voltage power grid regulation coefficient, calculate the displacement of the fracturing vehicle after allocating the lost displacement according to the fault instruction and the actual displacement of each fracturing vehicle when the set pump group displacement is reached, and calculate the displacement of the fracturing vehicle after allocating the maximum displacement difference according to the real-time power of the fracturing vehicle and the maximum capacity of the high-voltage power grid of the fracturing vehicle group.

[0053] Specifically, during the large-scale fracturing construction process, the fracturing vehicle group includes fracturing vehicles No. 1 to No. 12, and three high-voltage power grids are set to provide power for the fracturing vehicle group system. The maximum capacity values ​​of the three incoming high-voltage power grids are determined as P1, P2, and P3, that is, the total capacity of fracturing vehicles No. 1 to No. 4 is P1, the total capacity of fracturing vehicles No. 5 to No. 8 is P2, and the total capacity of fracturing vehicles No. 9 to No. 12 is P3. In the calculation module, the high-voltage power grid adjustment coefficient is calculated according to the maximum capacity of the high-voltage power grid of the fracturing vehicle group, which is expressed as:

[0054] a=P1 / P0,

[0055] b=P2 / P0,

[0056] c=P3 / P0,

[0057] P0=Min(P1,P2,P3)

[0058] Among them: a is the regulation coefficient of the first high-voltage power grid, P1 is the maximum capacity of the first high-voltage power grid, P0 is, is the regulation capacity, b is the regulation coefficient of the second high-voltage power grid, P2 is the maximum capacity of the second high-voltage power grid, c is the regulation coefficient of the third high-voltage power grid, P3 is the maximum capacity of the third high-voltage power grid, and Min is the minimum value symbol.

[0059] The calculation module calculates the displacement of the fracturing truck in the initial displacement stage and the stable displacement increase stage. The displacement of the 12 fracturing trucks is Vs1 / 3 on average. The total displacement in the stable displacement increase stage is 4Vs1, where Vs1 is the displacement of the No. 1 to No. 3 fracturing truck groups.

[0060] The calculation module calculates the actual displacement of each fracturing truck when the set pump group displacement is reached, expressed as:

[0061] V1=V2=V3=V4=a*Vs2 / 3 / 4,

[0062] V5=V6=V7=V8=b*Vs2 / 3 / 4,

[0063] V9=V10=V11=V12=c*Vs2 / 3 / 4

[0064] Among them: V1, V2, V3, V4 are the actual displacements of No. 1, No. 2, No. 3, No. 4 fracturing trucks respectively, Vs2 is the set vehicle group displacement, V5, V6, V7, V8 are the actual displacements of No. 5, No. 6, No. 7, No. 8 fracturing trucks respectively, V9, V10, V11, V12 are the actual displacements of No. 9, No. 10, No. 11, No. 12 fracturing trucks respectively.

[0065] The calculation module calculates the displacement of the fracturing truck after allocating the loss displacement, which is expressed as:

[0066] Vd1'=nVd1=a*Vs2 / 3 / 4,

[0067] Vd2'=nVd2=b*Vs2 / 3 / 4,

[0068] Vd3'=nVd3=c*Vs2 / 3 / 4,

[0069] V1'=V2'=V3'=V4'=a*Vd1' / (12-n),

[0070] V5'=V6'=V7'=V8'=b*Vd2' / (12-n),

[0071] V9'=V10'=V11'=V12'=c*Vd3' / (12-n)

[0072] Wherein: Vd1' is the loss displacement of n faulty fracturing trucks in the first fracturing truck group, n is the number of faulty fracturing trucks, Vd1 is the loss displacement of a single faulty fracturing truck in the first fracturing truck group, Vd2' is the loss displacement of n faulty fracturing trucks in the second fracturing truck group, Vd2 is the loss displacement of a single faulty fracturing truck in the second fracturing truck group, Vd3' is the loss displacement of n faulty fracturing trucks in the third fracturing truck group, Vd3 is the loss displacement of a single faulty fracturing truck in the third fracturing truck group, and V1'-V12' are the displacements of fracturing trucks No. 1 to No. 12 after the loss displacements are respectively allocated.

[0073] The calculation module calculates the displacement of the fracturing truck after allocating the maximum displacement difference according to the real-time power of the fracturing truck and the maximum capacity of the high-voltage power grid of the fracturing truck group. The specific process is: determine the maximum displacement that the fracturing truck can provide according to the real-time power of the fracturing truck and the maximum capacity of the high-voltage power grid of the fracturing truck group, subtract the maximum displacement that the fracturing truck group can provide from the displacement of the fracturing truck after the fracturing truck group allocates the lost displacement, obtain the maximum displacement difference of the fracturing truck group, and calculate the displacement of the fracturing truck after allocating the maximum displacement difference according to the maximum displacement difference of the fracturing truck group and in the manner of calculating the displacement of the fracturing truck after allocating the lost displacement.

[0074] The calculation module constructs a conditional model based on the real-time power of the fracturing truck and the maximum capacity of the high-voltage power grid of the fracturing truck group to determine the maximum displacement that the fracturing truck can provide. The conditional model is expressed as:

[0075] Ps1+Ps2+Ps3+Ps4≤95%P1

[0076] Ps5+Ps6+Ps7+Ps8≤95%P2

[0077] Ps9+Ps10+Ps11+Ps12≤95%P3

[0078] Among them: Ps1-Ps12 are the real-time power of fracturing trucks No. 1 to No. 12 respectively.

[0079] The calculation module can determine the maximum displacement Vmax that a single fracturing truck can provide based on the relationship between pressure, displacement and power using the above conditional model.

[0080] The first judgment module is used to judge whether the displacement of the fracturing vehicle group is less than the low displacement threshold according to the first judgment instruction; if so, a first judgment correct instruction is generated, otherwise a second judgment instruction is generated.

[0081] Specifically, the first judgment module sets a low displacement threshold value VL according to the fracturing process, and generates a first correct judgment instruction when the displacement Vs1 of the fracturing vehicle group is less than the low displacement threshold value VL, otherwise, generates a second judgment instruction.

[0082] The second judgment module is used to judge whether the set vehicle group displacement is greater than the total displacement in the stable displacement increase stage according to the second judgment instruction; if so, a second judgment correct instruction is generated, otherwise a first judgment instruction is generated.

[0083] Specifically, the second judgment module judges whether the set vehicle group displacement Vs2 is greater than the total displacement 4Vs1 in the stable displacement increase stage; if so, a second judgment correct instruction is generated, otherwise a first judgment instruction is generated.

[0084] The fault judgment module is used to judge whether there is a fault in the fracturing vehicle; if so, a fault instruction is generated, otherwise no fault instruction is generated.

[0085] The adjustment instruction generating module is used to generate the displacement adjustment instruction of the fracturing truck and the total displacement adjustment instruction of the fracturing truck group according to the displacement of the fracturing truck in the stable displacement increase stage, the displacement of the fracturing truck after allocating the loss displacement and the displacement of the fracturing truck after allocating the maximum displacement difference.

[0086] Specifically, the adjustment instruction generating module generates corresponding displacement adjustment instructions for the fracturing truck according to the displacement of the fracturing truck in the stable displacement increase stage, the displacement of the fracturing truck after allocating the loss displacement, and the displacement of the fracturing truck after allocating the maximum displacement difference; the adjustment instruction generating module determines whether the displacement of the fracturing truck after allocating the maximum displacement difference is greater than the maximum displacement of the fracturing truck; if so, a total displacement adjustment instruction for the fracturing truck group is generated, otherwise, no total displacement adjustment instruction for the fracturing truck group is generated.

[0087] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0088] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0089] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0090] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0091] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. An electronic control system for a fracturing truck, characterized in that: It includes an electric control room of a fracturing vehicle and a control unit of the fracturing vehicle connected to the electric control room of the fracturing vehicle by remote communication; The fracturing truck electrical control room is connected to the fracturing motor on the fracturing truck frame through a high-voltage cable; the fracturing truck electrical control room is used to obtain the real-time power of the fracturing truck, and control the fracturing motor according to the fracturing truck displacement adjustment command and the total displacement adjustment command of the fracturing truck group, so as to realize the adaptive control of the fracturing truck group; The fracturing truck control unit is used to generate fracturing truck displacement adjustment instructions and fracturing truck group total displacement adjustment instructions according to the maximum capacity of the high-voltage power grid of the fracturing truck group and the real-time power of the fracturing truck, combined with the multi-circuit power grid load distribution problem and high load rate tripping problem during the fracturing construction process.

2. The electronic control system of the fracturing truck according to claim 1, characterized in that: The electrical control room of the fracturing truck is divided into a transformer room and a frequency converter room; the transformer room is used to place the rectifier transformer; the frequency converter room is used to place the high-voltage frequency converter, high-voltage switchgear and the communication module that is remotely connected to the control unit of the fracturing truck.

3. The electronic control system of the fracturing truck according to claim 2, characterized in that: Both the inverter room and the transformer room adopt an improved multi-layer filter structure; the first layer of the multi-layer filter structure is a herringbone louver, the second layer of the multi-layer filter structure is a grid-type metal mesh, and the third layer of the multi-layer filter structure is a primary filter cotton.

4. The electronic control system of the fracturing truck according to claim 2, characterized in that: An inverter fan unit is arranged at the connection between the upper rear end of the high-voltage inverter in the inverter room and the back frame of the high-voltage inverter. The air outlet of the inverter fan unit is connected to the air outlet on the wall of the inverter room by a mechanical air duct. The rectifier transformer is separated from the middle by an insulating plate in the transformer room, a transformer fan unit is arranged at the top of the front end of the transformer room, and an insulating air guide tube is arranged between the transformer fan unit and the transformer room.

5. The electronic control system of the fracturing truck according to claim 2, characterized in that: The rectifier transformer adopts a 36-pulse rectifier transformer, and its secondary side has 6 phase shift groups, and the angle difference of each phase shift group is 10°; the high-voltage inverter adopts a high-voltage nine-level inverter.

6. The electronic control system of the fracturing truck according to claim 2, characterized in that: The bottom of the rectifier transformer, high-voltage frequency converter and high-voltage switch cabinet are all equipped with a shock-absorbing damper consisting of a shock-absorbing cylinder and a shock-absorbing pad.

7. The electronic control system of the fracturing truck according to claim 2, characterized in that: One end of the high-voltage cable is connected to the high-voltage connector at the rear of the fracturing vehicle, and the other end of the high-voltage cable is connected to the high-voltage switch cabinet with a cold shrink cable connector. The high-voltage switch cabinet, rectifier transformer, and high-voltage inverter are connected in sequence through the high-voltage cable, and the high-voltage inverter is connected to the fracturing motor on the fracturing vehicle frame.

8. The electronic control system of the fracturing truck according to claim 1, characterized in that: The fracturing truck control unit includes a calculation module, a first judgment module, a second judgment module, a fault judgment module, and an adjustment instruction generation module; The calculation module is used to calculate the high-voltage power grid adjustment coefficient according to the maximum capacity of the high-voltage power grid of the fracturing vehicle group and generate a first judgment instruction, calculate the displacement of the fracturing vehicle in the stable displacement increase stage according to the first judgment correct instruction, calculate the actual displacement of each fracturing vehicle when the set pump group displacement is reached according to the second judgment correct instruction and the high-voltage power grid adjustment coefficient, calculate the displacement of the fracturing vehicle after allocating the lost displacement according to the fault instruction and the actual displacement of each fracturing vehicle when the set pump group displacement is reached, and calculate the displacement of the fracturing vehicle after allocating the maximum displacement difference according to the real-time power of the fracturing vehicle and the maximum capacity of the high-voltage power grid of the fracturing vehicle group; The first judgment module is used to judge whether the displacement of the fracturing vehicle group is less than the low displacement threshold according to the first judgment instruction; if so, a first judgment correct instruction is generated, otherwise a second judgment instruction is generated; The second judgment module is used to judge whether the set vehicle group displacement is greater than the total displacement of the stable displacement increase stage according to the second judgment instruction; if so, a second judgment correct instruction is generated, otherwise, a first judgment instruction is generated; The fault judgment module is used to judge whether the fracturing vehicle has a fault; if so, a fault instruction is generated, otherwise no fault instruction is generated; The adjustment instruction generating module is used to generate the displacement adjustment instruction of the fracturing truck and the total displacement adjustment instruction of the fracturing truck group according to the displacement of the fracturing truck in the stable displacement increase stage, the displacement of the fracturing truck after allocating the loss displacement and the displacement of the fracturing truck after allocating the maximum displacement difference.

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