Electrically-driven fracturing equipment and fracturing system

Abstract

The utility model discloses an electric drive fracturing device and a fracturing system. The electric drive fracturing device comprises a bearing base body, a frequency conversion all-in-one machine, a plunger pump and a coupler. The frequency conversion all-in-one machine is arranged on the bearing base body, the frequency conversion all-in-one machine comprises a driving part and a frequency conversion part integrally installed on the driving part, and the frequency conversion part is electrically connected with the driving part; the driving part is provided with a driving shaft; the plunger pump is arranged on the bearing base body; the driving shaft is in transmission connection with a power input shaft of the plunger pump through the coupler. According to the scheme, the problem that the layout difficulty of the fracturing system is large can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas field fracturing, in particular to an electric-driven fracturing device and a fracturing system. Background Art

[0002] As oil and gas development equipment is developing in the direction of "low energy consumption, low noise, and low emissions", traditional fracturing equipment using diesel engines as power sources has largely hindered the development of oil and gas energy. In order to overcome the shortcomings of traditional fracturing equipment, electric-driven fracturing equipment has replaced fracturing equipment using diesel engines as power sources. Electric-driven fracturing equipment has the advantages of small size, light weight, energy saving, and environmental protection.

[0003] In the related art, the electric-driven fracturing equipment includes a driving motor and a plunger pump, wherein the driving shaft of the driving motor is connected to the input shaft of the plunger pump. At this time, the driving motor is used as a power source to drive the plunger pump to pump the fracturing medium.

[0004] However, when the fracturing system is laid out at the well site, the electric-driven fracturing equipment needs to be used in conjunction with the frequency conversion equipment, and the electric-driven fracturing equipment is electrically connected to the power supply equipment through the frequency conversion equipment. At this time, the electric-driven fracturing equipment, the frequency conversion equipment and the power supply equipment need to be connected through a large number of cables. Such a layout occupies a large well site area and also increases the complexity of the layout of the fracturing system at the well site. Therefore, the layout of the fracturing system is difficult. Utility Model Content

[0005] The utility model discloses an electric-driven fracturing device and a fracturing system, so as to solve the problem that the layout of the fracturing system is relatively difficult.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] An electric-driven fracturing device, comprising:

[0008] A bearing substrate;

[0009] A frequency conversion integrated machine, the frequency conversion integrated machine is arranged on the bearing base, the frequency conversion integrated machine comprises a driving part and a frequency conversion part integratedly mounted on the driving part, the frequency conversion part is electrically connected to the driving part; the driving part has a driving shaft;

[0010] A plunger pump, wherein the plunger pump is arranged on the bearing substrate;

[0011] A coupling, through which the drive shaft is drivingly connected to the power input shaft of the plunger pump.

[0012] A fracturing system comprises a power supply device, a high-voltage manifold, a sand mixing device and the above-mentioned electric-driven fracturing device, wherein the power supply device is used to supply power to the electric-driven fracturing device, and the sand mixing device and the high-voltage manifold are connected via the electric-driven fracturing device.

[0013] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0014] The electric-driven fracturing equipment disclosed in the utility model is connected to the driving shaft of the frequency conversion integrated machine through a coupling. In this scheme, the electric-driven fracturing equipment adopts the frequency conversion integrated machine as the power source, and the frequency conversion integrated machine integrates the driving part and the frequency conversion part, so the frequency conversion integrated machine can not only realize the frequency conversion operation, but also output the driving force. When the fracturing system is laid out in the well site, since the electric-driven fracturing equipment disclosed in the present application itself has the frequency conversion function, the electric-driven fracturing equipment can be directly connected to the power supply equipment. Therefore, compared with the electric-driven fracturing equipment in the related art, the electric-driven fracturing equipment disclosed in the present application does not need to be additionally connected to the frequency conversion equipment when the well site is laid out, thereby reducing the occupation of the well site area of ​​the fracturing system when it is laid out. In addition, the number and length of cables connected to the fracturing system are also reduced. Therefore, the electric-driven fracturing equipment disclosed in the present application can effectively reduce the complexity of the layout of the fracturing system in the well site, thereby reducing the difficulty of the layout of the fracturing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A top view of a first electric-driven fracturing device disclosed in an embodiment of the utility model;

[0017] Figure 2 This is a front view of the first electric-driven fracturing device disclosed in an embodiment of the utility model;

[0018] Figure 3 A top view of a second electric-driven fracturing device disclosed in an embodiment of the utility model;

[0019] Figure 4 This is a front view of a third electric-driven fracturing device disclosed in an embodiment of the utility model;

[0020] Figure 5 A top view of a third electric-driven fracturing device disclosed in an embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the fracturing system disclosed in the embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 100-electrically driven fracturing equipment, 110-bearing matrix, 120-frequency conversion integrated machine, 121-driving unit, 122-frequency conversion unit, 130-plunger pump, 141-first coupling, 142-second coupling, 150-transmission shaft, 160-heat dissipation device, 170-lubricating device, 171-circulating oil pump, 172-driving source, 173-lubricating oil tank, 180-control cabinet, 210-power supply device, 220-power distribution device, 300-high-pressure manifold, 400-sand mixing equipment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The technical solutions disclosed in various embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, an embodiment of the utility model discloses an electric-driven fracturing device 100 , and the disclosed electric-driven fracturing device 100 includes a bearing base 110 , a frequency conversion integrated machine 120 , a plunger pump 130 and a coupling.

[0027] The support base 110 is used to provide a mounting base for other components of the electric-driven fracturing device 100. When the electric-driven fracturing device 100 is an electric-driven fracturing skid, the support base 110 may be a skid base. When the driven fracturing device is an electric-driven fracturing vehicle, the support base 110 may be a vehicle body. Therefore, the structure of the support base 110 is different according to the type of the electric-driven fracturing device 100.

[0028] The frequency converter 120 is disposed on the carrier substrate 110, and includes a drive unit 121 and a frequency converter 122 integrally mounted on the drive unit 121. The frequency converter 122 is electrically connected to the drive unit 121. The drive unit 121 has a drive shaft, which is used to output power of the frequency converter.

[0029] In a specific solution, the frequency conversion unit 122 includes at least a rectifier inverter, and the driving unit 121 is an electric motor. The rectifier inverter is electrically connected to the electric motor through a cable. Usually, when the rectifier inverter performs frequency conversion on the alternating current from the power supply equipment, the alternating current is first converted into direct current, and this operation is rectification. Then the direct current is converted into alternating current with variable frequency, and this operation is inversion, and finally the inverted alternating current is supplied to the electric motor. At this time, the rectifier inverter can perform frequency conversion and voltage regulation operations. The specific principle and structure of the rectifier inverter recorded in this application are well-known technologies and will not be elaborated in this article.

[0030] The frequency conversion unit 122 disclosed in this application can be a three-level frequency conversion, a five-level frequency conversion, a seven-level frequency conversion or a cascade frequency conversion structure. Of course, the frequency conversion unit 122 can also be other structures, which are not limited herein. The frequency conversion unit 122 in this application can be flexibly selected according to specific working conditions, which is not limited herein. In addition, the specific principle and structure of the frequency conversion integrated machine 120 are well-known technologies and are not limited herein.

[0031] The plunger pump 130 is one of the core components of the electric-driven fracturing equipment 100. The drive shaft of the frequency converter 120 is connected to the power input shaft of the plunger pump 130 through a coupling to drive the plunger to reciprocate in the cylinder, so that the working volume in the cylinder increases and decreases alternately to transport the fracturing medium. Optionally, the coupling can be an elastic coupling, a diaphragm coupling or a chain coupling. Of course, the coupling can also be other couplings, which are not limited herein.

[0032] Specifically, the plunger pump 130 has a power end and a hydraulic end, the power end is used to input driving force, and the hydraulic end is used to output driving force. Therefore, the power input shaft mentioned above is the power end component of the plunger pump 130. At this time, the frequency conversion integrated machine 120 inputs the driving force to the crankshaft of the plunger pump 130, and the crankshaft drives the plunger to move. The power input shaft in this article can be the input shaft of the reduction box connected to the power end of the plunger pump 130, or it can be the crankshaft of the plunger pump 130, which is not limited in this article. The specific structure of the plunger pump 130 is a well-known technology and will not be described in detail in this article.

[0033] In the embodiment disclosed in the present application, the electric-driven fracturing equipment 100 adopts a frequency conversion integrated machine 120 as a power source, and the frequency conversion integrated machine 120 integrates the driving part 121 and the frequency conversion part 122, so that the frequency conversion integrated machine 120 can not only realize the frequency conversion operation, but also output the driving force. When the fracturing system is laid out in the well site, since the electric-driven fracturing equipment 100 disclosed in the present application itself has a frequency conversion function, the electric-driven fracturing equipment 100 can be directly connected to the power supply equipment. Therefore, compared with the electric-driven fracturing equipment 100 in the related art, the electric-driven fracturing equipment 100 disclosed in the present application does not need to be additionally connected to the frequency conversion equipment when the well site is laid out, thereby reducing the occupation of the well site area of ​​the fracturing system during the layout. In addition, the number and length of cables connected to the fracturing system are also reduced. Therefore, the electric-driven fracturing equipment 100 disclosed in the present application can effectively reduce the complexity of the layout of the fracturing system in the well site, thereby reducing the difficulty of the layout of the fracturing system.

[0034] In addition, the present application adopts the frequency conversion all-in-one machine 120 as the power source, which can integrate the frequency conversion unit 122 on the driving unit 121, thereby shortening the cable length between the frequency conversion unit 122 and the driving unit 121. At the same time, the cable between the frequency conversion unit 122 and the driving unit 121 can be enclosed in the shell of the frequency conversion unit 122 and the driving unit 121, thereby improving the connection reliability of the cable and reducing the wear of the cable.

[0035] In addition, in the electric-driven fracturing equipment 100 disclosed in the present application, the driving shaft is connected to the power input shaft of the plunger pump 130 through a coupling. Since the coupling allows axial, radial or angular deviations to transmit torque, the coupling can allow deviations between the power input shaft and the driving shaft, thereby reducing the difficulty of assembling the frequency converter 120 and the plunger pump 130. At the same time, it also reduces the rigidity requirements for the bearing base 110 and the influence of the vibration of the plunger pump 130 on the frequency converter 120, thereby improving the reliability of the electric-driven fracturing equipment 100.

[0036] In the frequency conversion integrated machine 120 disclosed in the present application, the driving unit 121 may have a first housing, and the first housing here can serve as a mounting base for the driving unit 121. The frequency conversion unit 122 may have a second housing, and the second housing here can serve as a mounting base for the frequency conversion unit 122. The second housing may be integrated and mounted on the first housing. Alternatively, in another optional embodiment, the frequency conversion integrated machine 120 may further include an installation base shell, and the installation base shell may provide an installation space for the driving unit 121 and the frequency conversion unit 122, and the installation base may be connected to the bearing base 110.

[0037] In another optional embodiment, the electric-driven fracturing device 100 further includes a transmission shaft 150, and the number of couplings may be at least two, including a first coupling 141 and a second coupling 142, respectively. The first end of the transmission shaft 150 may be transmission-connected to the drive shaft through the first coupling 141. The second end of the transmission shaft 150 may be transmission-connected to the power input shaft through the second coupling 142.

[0038] In this solution, the power input shaft and the drive shaft are connected through the transmission shaft 150, the first coupling 141 and the second coupling 142. At this time, the transmission shaft 150, the first coupling 141 and the second coupling 142 can further reduce the difficulty of assembling the frequency conversion integrated machine 120 and the plunger pump 130. At the same time, the transmission shaft 150 can increase the distance between the frequency conversion integrated machine 120 and the plunger pump 130, thereby avoiding the risk of interference between the frequency conversion integrated machine 120 and the plunger pump 130, thereby further improving the reliability of the electric drive fracturing equipment 100.

[0039] In another optional embodiment, the electric-driven fracturing device 100 may further include a heat sink 160, which may be used to dissipate heat for the electric-driven fracturing device 100, and the heat sink 160 may be located between the frequency conversion integrated machine 120 and the plunger pump 130, and the heat sink 160 is located on the side of the transmission shaft 150 away from the bearing substrate 110. In this case, the transmission shaft 150 is located above the bearing substrate 110, and the heat sink 160 is located above the transmission shaft 150. The heat sink 160 in the present application can be used to dissipate heat for the frequency conversion integrated machine 120 and other devices of the electric-driven fracturing device 100.

[0040] In this solution, the heat sink 160 is located above the transmission shaft 150, so that the hot air can flow in an upward or obliquely upward direction along the electric-driven fracturing equipment 100, thereby avoiding the influence of heat on surrounding devices. In addition, the heat sink 160 is located above the transmission shaft 150. At this time, the heat sink 160 is avoided from occupying the installation area of ​​the supporting base 110, thereby reducing the length and width dimensions of the supporting base 110.

[0041] Optionally, the heat sink 160 may include a plurality of heat sinks with different functions and types, and the components required to dissipate heat for each heat sink may be different. For example, a water-cooled heat sink may be used for the heat dissipation in the electric-driven fracturing equipment 100, and an air-cooled heat sink may be used for the frequency conversion all-in-one machine 120. The heat sink 160 in this application may be specifically selected based on actual disclosure, and this document does not limit it. As long as the heat sink 160 is located above the drive shaft 150, and the heat sink 160 is located between the frequency conversion all-in-one machine 120 and the plunger pump 130, the structure belongs to the scope to be protected by this application.

[0042] Furthermore, the heat sink 160 may also include a detector, the heat sink and the detector are electrically connected, and the detector is used to detect the heat dissipation parameters of the heat sink. The heat sink here is used to achieve the heat dissipation function, and the heat sink can be water-cooled or air-cooled. The detector can be used to detect the heat dissipation parameters of the heat sink. Therefore, the heat sink 160 in this solution can obtain the heat dissipation parameters of the heat sink 160 in real time through the detector, so as to more accurately control the heat dissipation of the electric-driven fracturing equipment 100.

[0043] Optionally, the detector can be flexibly set according to the specific structure of the heat sink. For example, when the heat sink is an air-cooled heat sink, the detector can be a sensor for monitoring the air volume or wind speed. When the heat sink is a liquid-cooled heat sink, the detector can be a sensor for monitoring the flow rate or flow of the coolant. Of course, the detector can also be other types of sensors, such as temperature sensors, etc. The specific type of the detector is not limited herein.

[0044] In a specific embodiment, Figure 1 As shown, the heat sink 160 may be an air-cooled heat sink, and the heat sink may include a motor, a heat sink fan, and a mounting seat, the motor and the fan are mounted on the mounting seat, and the mounting seat is fixed on the bearing base 110. The mounting seat is located above the transmission shaft 150. Of course, the heat sink 160 is not limited to the structure described herein, and may also be other structures, which are not limited herein.

[0045] In another optional embodiment, the frequency conversion integrated machine 120 may further include a sensor component, which may be used to monitor data parameters of the frequency conversion unit 122 and the drive unit 121. The data parameters here may include one or more parameters such as vibration, temperature, and humidity. Therefore, the corresponding sensor components may include but are not limited to vibration, temperature, and humidity sensors.

[0046] In this solution, the sensor component monitors the temperature, humidity, vibration frequency or amplitude and other parameters of the drive unit 121 or the frequency conversion unit 122, which can reflect the motion state of the frequency conversion integrated machine 120, so that an alarm can be issued on the control interface of the fracturing system. According to different vibration, temperature and humidity levels, it is prompted to reduce power or shut down to ensure the safe operation of the fracturing system.

[0047] In another optional embodiment, the frequency conversion unit 122 may also have a transformer. In this case, the frequency conversion unit 122 can perform better voltage conversion and speed regulation, thereby further improving the performance of the frequency conversion integrated machine 120. In a specific solution, the frequency conversion unit 122 may include a rectifier inverter and a transformer. The specific installation structure and principle of the rectifier inverter and the transformer are well-known technologies, so they are not described in detail herein.

[0048] In another optional embodiment, the transformer can be used to transform and output a 380V voltage. The 380V voltage here can meet the working requirements of low-voltage electrical devices. At this time, the frequency conversion integrated machine 120 in the present application can not only provide power for the plunger pump 130, but also provide voltage for other electrical devices of the electric-driven fracturing equipment 100. For example, the transformer can be used to transform and output a 380V voltage that can be provided to the motor of the heat dissipation device 160 or the motor of the lubricating oil device below. Of course, all low-voltage electrical devices on the electric-driven fracturing equipment 100 can be used, and this article does not limit it.

[0049] In another optional embodiment, the electric-driven fracturing equipment 100 may further include a lubricating device 170, which is used to provide a lubricating medium for the plunger pump 130. The lubricating medium here may be lubricating oil or grease. The lubricating device 170 is disposed on the bearing base 110, and the lubricating device 170 may include a circulating oil pump 171, a driving source 172, and a lubricating oil tank 173. The oil inlet of the lubricating oil tank 173 may be connected to the lubricating oil outlet of the plunger pump 130, and the oil outlet of the lubricating oil may be connected to the lubricating oil inlet of the plunger pump 130 through the circulating oil pump 171, and the circulating oil pump 171 is connected to the driving source 172. The lubricating device 170 may provide lubricating oil or grease for the gears, bearings, and hydraulic end of the power end of the plunger pump 130.

[0050] Specifically, the driving source 172 may be a motor, and the driving source 172 provides power for the circulating oil pump 171 , so that the lubricating medium circulates between the lubricating oil tank 173 and the plunger pump 130 .

[0051] In this solution, the lubrication device 170 is integrated on the supporting substrate 110, thereby further improving the integration of the electric-driven fracturing equipment 100 and further compressing the layout area of ​​the fracturing system.

[0052] In another optional embodiment, the electric-driven fracturing device 100 may further include a control cabinet 180, which may be disposed on the carrier substrate 110, and the control cabinet 180 may be controlled and connected to the frequency conversion integrated machine 120. In this solution, the control cabinet 180 is integrated on the carrier substrate 110, thereby further improving the integration of the electric-driven fracturing device 100 and further compressing the layout area of ​​the fracturing system.

[0053] In the above embodiment, the control cabinet 180 can control the frequency conversion integrated machine 120, and can also control other electrical devices on the electric-driven fracturing equipment 100. In a specific solution, the control cabinet 180 can be integrated with a high-voltage switch cabinet and an auxiliary transformer. The auxiliary transformer in the control cabinet 180 can adjust the voltage of the power transmitted from the power supply device, and then increase it to other electrical devices in the electric-driven fracturing equipment 100. Of course, the auxiliary transformer in the control cabinet 180 can adjust the voltage of the power transmitted from the power supply device and then provide it to the frequency conversion integrated machine 120. Of course, this article only discloses a structure of the control cabinet 180, and does not limit the structure of the control cabinet 180. The specific structure of the control cabinet 180 is a well-known technology and is not limited herein.

[0054] In the embodiments disclosed in the present application, there are many ways to set up the control cabinet 180 and the frequency conversion integrated machine 120. For example, Figure 1 and 2 As shown, the frequency conversion unit 122 and the control cabinet 180 are located on opposite sides of the driving unit 121. Figure 3 As shown, the driving part 121 is divided into two parts, one of which is located at both sides of the driving part 121. The control cabinet 180 is located at one end of the driving part 121 away from the plunger pump 130. Figure 3 As can be seen from the figure, the control cabinet 180 is located at one end of the supporting base 110. Figure 4 and Figure 5 As shown, the control cabinet 180 is located on one side of the driving part 121, and the frequency conversion part 122 is located above the driving part 121. Of course, the control cabinet 180 and the frequency conversion integrated machine 120 can also be other structures, which are not limited herein.

[0055] Based on the electric-driven fracturing device 100 of any of the above embodiments of the present application, the embodiments of the present application further disclose a fracturing system, and the disclosed fracturing system has the electric-driven fracturing device 100 of any of the above embodiments.

[0056] The fracturing system disclosed in the present application also includes a power supply device, a high-pressure manifold 300 and a sand mixing device 400. Figure 6 As shown, the power supply device is used to supply power to the electric-driven fracturing device 100, and the sand mixing device 400 and the high-pressure manifold 300 are connected through the electric-driven fracturing device 100. At this time, the sand mixing device 400 transports the fracturing medium to the electric-driven fracturing device 100 through the low-pressure manifold, and the fracturing medium is transported to the high-pressure manifold 300 through the electric-driven fracturing device 100, and the fracturing medium enters the wellhead through the high-pressure manifold 300.

[0057] When the fracturing system disclosed in the present application is laid out in the well site, since the electric-driven fracturing device 100 itself has a frequency conversion function, the electric-driven fracturing device 100 can be directly connected to the power supply device. Therefore, there is no need to connect additional frequency conversion equipment when laying out the well site, thereby reducing the occupation of the well site area by the fracturing system during layout. In addition, the number and length of cables connected to the fracturing system are also reduced. Therefore, the complexity of the layout of the fracturing system in the well site can be effectively reduced, thereby reducing the difficulty of the layout of the fracturing system.

[0058] The power supply device in the above embodiment may be a power supply network, the power supply voltage of which is mainly 10KV / 50Hz. The power supply network may be directly connected to the frequency conversion integrated machine 120 .

[0059] In another optional embodiment, the power supply equipment may include a power supply device 210 and a power distribution device 220, and the power supply device 210 may be connected to the power distribution device 220. Here, the power supply device 210 may be a power supply network, and the power distribution device 220 may be a switch station, an integrated transformer station, and a combination structure of a switch station and a transformer station. The number of electric-driven fracturing equipment 100 may be multiple, and the power distribution device 220 is electrically connected to multiple electric-driven fracturing equipment 100. In this solution, by setting the power distribution device 220, the power supply equipment can be connected to multiple electric-driven fracturing equipment 100 at the same time, thereby further optimizing the layout of the fracturing system.

[0060] In one solution, the power distribution device 220 can be a switch station, which includes at least a high-voltage switch cabinet and a low-voltage switch cabinet. The access voltage of the high-voltage switch cabinet is greater than or equal to 10kV, and the access voltage of the low-voltage switch cabinet is less than or equal to 10kV. The incoming line voltage of the 35kV high-voltage switch cabinet is converted to 10kV and transmitted to multiple low-voltage switch cabinets. One low-voltage switch cabinet can be connected to at least one electric-driven fracturing device 100. For example, the switch station has a 35kV high-voltage incoming line and four 10kV or 13.8kV outgoing lines.

[0061] In another solution, a transformer structure is provided inside the switchgear station to transform 10kV (the voltage after the main transformer transforms above) into 380V, 400V, 600V or 690V, so as to provide low-voltage power supply to the electric-driven fracturing equipment 100 and meet the power demand of the motors of the lubrication, heat dissipation and other devices.

[0062] Alternatively, in another solution, the ionization distribution device may be an integrated substation, which may contain a high-voltage transformer and a switch cabinet or a switchgear (including a switch cabinet but not a high-voltage transformer). The control parameters and status parameter information of the integrated substation may be transmitted to the instrumentation equipment of the fracturing system, and the instrumentation equipment may remotely control the opening and closing of the switchgear and the on-load voltage regulation of the transformer. The voltage of the transformer may be reduced at low load to save energy; the voltage of the transformer may be increased at high load to ensure the stable operation of the power system.

[0063] The specific structure of the above-mentioned integrated substation and switchgear is a known technology and is not limited herein.

[0064] The above-mentioned power distribution device 220 can also monitor the total power consumption and the actual power consumption of each electric-driven fracturing equipment 100, and transmit the relevant information to the instrument equipment to realize the statistics of power consumption on site. The instrument equipment adjusts the on-load voltage regulation of the switch and transformer of the power distribution device 220 according to the load power of the electric-driven fracturing equipment 100 to ensure the normal operation of the power supply system. The instrument equipment communicates with the electric-driven fracturing equipment 100 and the power distribution device 220 by wired or wireless means, such as Ethernet, RS485, RS232, WIFI, 4G, 5G, etc. When an emergency shutdown is required, the electric-driven fracturing device is first remotely controlled by the instrument equipment to reduce the speed and shut down. When a single electric-driven fracturing equipment 100 needs to be powered off urgently, the switch cabinet corresponding to the power distribution device 220 can be remotely powered off by controlling the instrument.

[0065] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0066] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An electric-driven fracturing device, characterized in that: include: A supporting substrate (110); A frequency conversion all-in-one machine (120), the frequency conversion all-in-one machine (120) being arranged on the carrying base (110), the frequency conversion all-in-one machine (120) comprising a driving part (121) and a frequency conversion part (122) integrally mounted on the driving part (121), the frequency conversion part (122) being electrically connected to the driving part (121); the driving part (121) having a driving shaft; A plunger pump (130), wherein the plunger pump (130) is disposed on the supporting substrate (110); A coupling, through which the drive shaft is drivingly connected to the power input shaft of the plunger pump (130).

2. The electric-driven fracturing equipment according to claim 1, characterized in that: The electric-driven fracturing equipment (100) further comprises a transmission shaft (150), the number of the couplings being at least two, respectively comprising a first coupling (141) and a second coupling (142), the first end of the transmission shaft (150) being transmission-connected to the drive shaft via the first coupling (141), and the second end of the transmission shaft (150) being transmission-connected to the power input shaft via the second coupling (142).

3. The electric-driven fracturing equipment according to claim 2, characterized in that: The electric-driven fracturing equipment (100) further comprises a heat dissipation device (160), wherein the heat dissipation device (160) is used to dissipate heat for the electric-driven fracturing equipment (100), the heat dissipation device (160) is located between the frequency conversion integrated machine (120) and the plunger pump (130), and the heat dissipation device (160) is located on a side of the transmission shaft (150) that is away from the bearing base (110).

4. The electric-driven fracturing equipment according to claim 3, characterized in that: The heat dissipation device (160) comprises a heat dissipation device and a detector, the heat dissipation device and the detector are electrically connected, and the detector is used to detect heat dissipation parameters of the heat dissipation device.

5. The electric-driven fracturing equipment according to claim 1, characterized in that: The frequency conversion integrated machine (120) further comprises a sensor component, wherein the sensor component is used to monitor the operating parameters of the frequency conversion unit (122) and the driving unit (121).

6. The electric-driven fracturing equipment according to claim 1, characterized in that: The frequency conversion unit (122) has a transformer, and the transformer is used for voltage conversion and output of 380V voltage.

7. The electric-driven fracturing equipment according to claim 1, characterized in that: The electric-driven fracturing equipment (100) further comprises a lubricating device (170), wherein the lubricating device (170) is used to provide a lubricating medium for the plunger pump (130), and the lubricating device (170) is arranged on the bearing base (110), and the lubricating device (170) comprises a circulating oil pump (171), a driving source (172) and a lubricating oil tank (173), wherein the oil inlet of the lubricating oil tank (173) is connected to the lubricating oil outlet of the plunger pump (130), and the oil outlet of the lubricating oil tank (173) is connected to the lubricating oil inlet of the plunger pump (130) through the circulating oil pump (171), and the circulating oil pump (171) is connected to the driving source (172).

8. The electric-driven fracturing equipment according to claim 1, characterized in that: The electric-driven fracturing equipment (100) further comprises a control cabinet (180), wherein the control cabinet (180) is arranged on the supporting base (110), and the control cabinet (180) is control-connected to the frequency conversion integrated machine (120).

9. A fracturing system, characterized in that: The invention comprises a power supply device, a high-voltage pipe manifold (300), a sand mixing device (400), and an electric-driven fracturing device (100) according to any one of claims 1 to 8, wherein the power supply device is used to supply power to the electric-driven fracturing device (100), and the sand mixing device (400) and the high-voltage pipe manifold (300) are connected to each other via the electric-driven fracturing device (100).

10. The fracturing system according to claim 9, characterized in that: The power supply equipment comprises a power supply device (210) and a power distribution device (220), the power supply device (210) is connected to the power distribution device (220), there are multiple electric-driven fracturing devices (100), and the power distribution device (220) is electrically connected to the multiple electric-driven fracturing devices (100).

Images