Abstract: A display substrate and a display device are provided. The display substrate includes: a base substrate and a plurality of sub-pixels distributed in arrays and provided on the base substrate. And the plurality of sub-pixels is divided into a plurality of sub-pixel columns. The display substrate further includes: a plurality of data lines, each of which is coupled to respective sub-pixels at a corresponding sub-pixel column; a plurality of touch electrodes and a plurality of touch signal lines coupled to corresponding touch electrodes.

Abstract: The present disclosure relates to a fracturing system comprising a functional unit, an electricity supply unit and an energy storage unit. The functional unit is configured to perform procedures of fracturing operations. The electricity supply unit is electrically connected with the functional unit and is configured to supply electrical energy to the functional unit. The energy storage unit is respectively electrically connected with the electricity supply unit and the functional unit, and is configured to store electrical energy from the electricity supply unit and supply electrical energy to the functional unit.

Abstract: The present disclosure provides a fracturing system comprising fracturing equipment. The fracturing equipment comprises a power supply platform, a gas turbine engine, one or more rectifiers, and a power system comprising at least one of the following: a generator, an energy storage, and an electricity supplier. At least two of the gas turbine engine, the power system, and the one or more rectifiers are arranged on the power supply platform. A first end of the power system is connected to the gas turbine engine. A second end of the power system is connected to the one or more rectifiers. The power system is configured to output a voltage to the one or more rectifiers directly without passing through a rectifier transformer.

Abstract: An auxiliary optical system is installed on a telescopic sight of a gun, the telescope sight including an eyepiece end, an objective end and a first reticle. The system includes a digital imaging member fixed at the objective end by a first fixing member and partially shielding an objective lens, a display member fixed at the eyepiece end by a second fixing member and electrically connected to the digital imaging member; the digital imaging member configured to perform photosensitive image on environmental images and convert the environmental images into video signals, and generates a second reticle that is adjustable and has the same function as the first reticle, the second reticle and the video signals stacked together to be transmitted to the display member for display. The present disclosure enables the gun to have functions of the digital sight without replacing a conventional telescopic sight.

Abstract: A fracturing apparatus includes: a plunger pump having a hydraulic end and a power end, wherein the power end comprises a power end oil outlet and at least one power end oil inlet that are coupled to each other; a power end lubricating system, including a lubricating oil tank defining an accommodation space, at least one lubrication pump having a lubrication pump oil inlet and a lubrication pump oil outlet that are coupled to each other, and at least one lubrication motor configured to provide power for the at least one lubrication pump; a temperature detector disposed on any one of the oil return pipeline, the power end oil outlet, and the lubricating oil tank; and a control system connected to the temperature detector and the power end lubricating system and configured to control the power end lubricating system.

Abstract: A fracturing device includes a power unit, and the power unit includes a muffling compartment, a turbine engine, and an air intake unit. The air intake unit is communicated with the turbine engine through an intake pipe and configured to provide a combustion-supporting gas to the turbine engine; the air intake unit is at a top of the muffling compartment and the muffling compartment has an accommodation space, the turbine engine is within the accommodation space. A fan is further provided to generate wither positive pressure or negative presser in the muffling compartment to facilitate a cooling of the turbine engine.

Abstract: An electrically-driven fracturing system, which includes a main power generation device, a first auxiliary power generation device, a switch device, and an electrically-driven fracturing device; the switch device includes a low-voltage switch group and a high-voltage switch group; the electrically-driven fracturing device includes a fracturing motor and a fracturing auxiliary device; a rated generation power of the main power generation device is greater than a rated generation power of the first auxiliary power generation device, a rated output voltage of the main power generation device is greater than a rated output voltage of the first auxiliary power generation device, the high-voltage switch group includes an input end and an output end, and the low-voltage switch group includes an input end and an output end, the input end of the high-voltage switch group is connected to the main power generation device, the output end of the high-voltage switch group is connected to the fracturing motor, the input end

Abstract: An electrically-driven pumping system and a driving method thereof. The electrically-driven pumping system includes: a power generation device, at least one energy storage system, a main motor, a pumping device, an auxiliary device, and a first transformer. The first transformer includes an input end, a first output end, and a second output end, the power generation device is connected to the energy storage unit, the input end of the first transformer is connected to the energy storage unit, the first output end of the first transformer is electrically connected to the main motor, and the second output end of the first transformer is electrically connected to the auxiliary device. As such, the electrically-driven pumping system may avoid problems, such as the shutdown of the main motor caused by power failure of the power generation device, and ensure a continuous operation.

Abstract: The present disclosure provides a fracturing device driven by a variable-frequency adjustable-speed integrated machine (VFASIM), including the VFASIM and a plunger pump. The VFASIM includes a driving device for providing a driving force and an inverting device integrally installed on the driving device. The inverting device supplies power to the driving device. The plunger pump is integrally installed together with the VFASIM, the plunger pump is mechanically connected to the driving device of the VFASIM and driven by the driving device. According to the present disclosure, it is possible to achieve an overall layout with a high degree of integration. The present disclosure also provides a well site layout including a plurality of fracturing devices described above.

Abstract: A fracturing device, including a power unit, wherein the power unit comprises a muffling compartment, a turbine engine, an air intake unit, and a starter; the air intake unit is communicated with the turbine engine through an intake pipe, and configured to provide a combustion-supporting gas to the turbine engine; the air intake unit is located at the top of the muffling compartment, the muffling compartment comprises an accommodation space, the turbine engine and the starter are located in the accommodation space, and the starter is configured to start the turbine engine, the starter comprises a first electric motor.

Abstract: The present invention discloses a positive-pressure double-nozzle nasal cavity cleaner featuring double pressure protection, and relates to the technical field of health care. The nasal cavity cleaner consists of a nose washing end, an upper shell, a core module, a control module, a lower shell, a liquid reservoir and a waste reservoir, wherein the nose washing end is rotatably connected to a top portion of the upper shell, and the nose washing end consists of a silicone washing nozzle, a silicone backflow nozzle and a rotary connecting base. The nasal cavity cleaner uses positive pressure and automatic pressure relief structures to obtain safe and constant air pressure, and then presses normal saline into the nasal cavity to clean the nasal cavity, so that pressure in the nasal cavity is small and stable during cleaning, which prevents damage to the nasal cavity and ear canal, thus being safer to use.

Abstract: A plunger pump base and a plunger pump device. The plunger pump base includes a support assembly and an extension assembly. The support assembly includes a top plate, a bottom plate and a support frame, the top plate and the bottom plate are oppositely arranged at an interval, and the support frame is respectively fixed with the top plate and the bottom plate. The extension assembly includes an extension block, a first telescopic mechanism and a second telescopic mechanism. One end of the first telescopic mechanism is rotatably connected to the extension block, the other end of the first telescopic mechanism is rotatably connected to the top plate. One end of the second telescopic mechanism is rotatably connected to the extension block, and the other end of the second telescopic mechanism is rotatably connected to the bottom plate.

Abstract: A liquid-cooling fracturing system includes a fracturing device; a power device connected to the fracturing device through a transmission device and configured to provide power for the fracturing device; a cooling medium storage device configured to store a cooling medium for cooling the power device; and a first heat exchange device, the first heat exchange device using cooling liquid to exchange heat with the cooling medium to cool the cooling medium.

Abstract: A mixing and discharging device, a mixing and discharging system and a fracturing system are provided. The mixing and discharging device comprises a main shell, an impeller structure and a main shaft. The main shell comprises a top cover; the impeller structure is in the main shell; the main shaft is configured to drive the impeller structure to rotate, penetrates through the top cover and extends into the main shell; a bottom end of the main shaft is in the main shell and is fixed on the impeller structure, and the bottom end of the main shaft is separated from the shell.

Abstract: The present invention provides a call processing method and a device. The call processing method includes: receiving, by a customized alerting tone server, a call request sent by a calling terminal, and forwarding the call request to a called terminal; receiving a called terminal ringing message, and playing a customized alerting tone audio stream and a customized alerting tone video stream to the calling terminal; receiving a called terminal message indicating that a called user answers a call, and performing call media resource negotiation and customized alerting tone video resource negotiation with the calling terminal; and stopping playing the customized alerting tone audio stream to the calling terminal, and playing the customized alerting tone video stream to the calling terminal. The customized alerting tone continuous playing solution of the present invention enriches user experience and improves network usage.

Abstract: Disclosed is a portable first-aid anti-asphyxiation device that automatically takes foreign matter from a respiratory airway, relating to medical care supplies. It generates suction force automatically by pressing the trigger button. The device is operated easily. The obstructions in the airway can be eliminated quickly. Since the suction force is controlled by the spring inside the device and the stops on the piston rod, the structure of the device is simple. The device generates the same force each time. The suction force may not be variable due to manual operation. Compared to the devices on the market that requires a person to operate with both hands, the device of the present disclosure is safer, can be operated easily, and can generate stable results.

Abstract: A step-down power supply device includes: a first switch cabinet configured for receiving an alternating current having a first voltage and controlling an on-off switching of a power supply network; a transformer configured for receiving the alternating current from the first switch cabinet, reducing the first voltage of the received alternating current to a second voltage, and outputting the second voltage; a second switch cabinet configured for receiving the second voltage from the transformer, and outputting the second voltage; and a radiator configured for dissipating heat of at least two of the first switch cabinet, the transformer and the second switch cabinet, wherein the first voltage is greater than the second voltage. The present disclosure can reduce the size of the step-down power supply device, while improving the efficiency of heat dissipation.

Abstract: A fracturing device includes a power unit, and the power unit includes a muffling compartment, a turbine engine, and an air intake unit. The air intake unit is communicated with the turbine engine through an intake pipe and configured to provide a combustion-supporting gas to the turbine engine; the air intake unit is at a top of the muffling compartment and the muffling compartment has an accommodation space, the turbine engine is within the accommodation space. A fan is further provided to generate wither positive pressure or negative presser in the muffling compartment to facilitate a cooling of the turbine engine.

Abstract: A fracturing apparatus may include a first plunger pump including a first power end and a first hydraulic end; a prime mover including a first power output shaft; and a first clutch including a first connection portion and a second connection portion. The first power end of the first plunger pump includes a first power input shaft, the first connection portion is coupled to the first power input shaft, the second connection portion is coupled to the first power output shaft of the prime mover.

Abstract: A reconstruction method for DCSK signals is provided. An information bit sequence to be transmitted is acquired, which is processed by serial-to-parallel conversion. A processed information bit sequence is input into a modulator for modulation to obtain a modulated signal matrix. Cross multiplication is performed between the modulated signal matrix and a chaotic signal to obtain an original information-bearing matrix, which is reconstructed according to a predetermined reconstruction matrix to obtain an information-bearing reconstruction matrix. A transmission symbol is generated according to the information-bearing reconstruction matrix and a reference signal matrix in combination with frame structure information of the transmission symbol, and is sent to a receiving end via a wireless network to demodulate a received signal according to a reconstruction matrix. A reconstruction device for DCSK signals is also provided.