2863 results about "Plunger pump" patented technology

The invention discloses a multi-input model compensation plant protection robot pesticide application control system and control method, and belongs to the technical field of agricultural plant protection. The system comprises an upper computer input system, a lower computer controller and a pesticide application system; the upper computer input system is based on an image processing unit of an AI edge computing platform, performs target identification by using a deep learning model, and extracts key information of target crops or weeds in real time; the lower computer controller receives target information transmitted by the upper computer, adopts a dynamic front adjustment strategy of a spray boom virtual line, and dynamically controls an execution element according to the real-time traveling speed of a vehicle, sensor data of a pesticide application system and key information of target crops or weeds, so that accurate target pesticide spraying is realized; the pesticide applying system comprises a pesticide box, a plunger pump, a flow sensor, a pressure sensor, a switch valve, an electric ball valve, an overflow valve, a PWM proportional electromagnetic valve and a nozzle array. The pesticide applying precision is improved, the pesticide using amount is reduced, and the sustainability of agricultural production is improved.

The invention discloses a measuring system and a calculating method for the friction coefficient of a plunger pump flow distribution pair, and relates to the technical field of fluid machinery and intelligent measurement and control. The system comprises the following components: a multi-dimensional data acquisition module, a data processing and preprocessing module, an intelligent calculation model construction module, a friction coefficient prediction and optimization module and a visualization and report generation module. According to the invention, through the multi-dimensional data acquisition module and the intelligent calculation model construction module, accurate measurement and prediction of the friction coefficient of the plunger pump flow distribution pair are realized, the nonlinear relationship among the parameters is fully considered during design of the intelligent calculation model, and training is carried out through a large amount of experimental data, so that the accuracy and the accuracy of the friction coefficient of the plunger pump flow distribution pair are improved. According to the method, the complex influence mechanism of each parameter on the friction coefficient can be automatically learned and identified, the prediction precision of the friction coefficient is improved, and the generalization ability of the model is remarkably enhanced through wide-coverage operation conditions and design variants, so that the prediction result is more reliable and stable.

The invention discloses a plunger pump fault diagnosis method and device, a medium and equipment. The method comprises the following steps: acquiring a pressure signal and an original vibration signal of the plunger pump; acquiring data in different states; obtaining frequency domain information based on continuous wavelet transform; performing multi-source data fusion; acquiring a global dependency relationship between the input and the output based on an encoder; and the fault of the plunger pump is diagnosed. By introducing a multi-source data fusion method, time domain and frequency domain signals collected by different types of sensors are comprehensively processed, so that information of different data sources is effectively integrated, and the accuracy and comprehensiveness of fault diagnosis are improved; important features in fault signals are automatically recognized and weighted through the Transform model, the extraction precision of fault features is improved, the model can effectively learn the fault features in a few-sample environment by optimizing a network structure and training parameters in the training process, and the diagnosis precision is remarkably improved.

A plunger pump packing assembly includes a header ring, and one or more seals. The plunger pump packing assembly operates as a scal between a static component and a dynamic component (e.g., reciprocating plunger). The header ring has a vented inside portion to prevent trapping pressure on the outer diameter of the header ring or between the header ring and adjacent seals or packing rings. The vents allow trapped pressure to return when the pumped fluid pressure is lower. A radially protruding edge on the outer diameter of the header ring significantly reduces or prevents migration of abrasive media, such as proppant, between the header ring and the static component. In some examples, the header ring does not contact the dynamic component, thus preventing the trapping of abrasive media particles between the header ring and the surface of the dynamic component.

The present application discloses a coaxially integrated servo motor pump with integrated drive control functions, comprising a motor pump housing, a controller housing, and an electrical connector. The motor pump housing is provided with a blind hole, a first cavity for accommodating a plunger pump assembly, and a second cavity for accommodating a servo motor assembly, wherein the plunger pump assembly and the servo motor assembly are connected via a rotating shaft. The controller housing is connected to one end of the motor pump housing, and a drive controller is provided within the controller housing. The blind hole communicates with the second cavity, and the electrical connector is sealed and connected to the blind hole, and the electrical connector is electrically connected to the servo motor assembly and the drive controller. The distribution plate and the sealing assembly are respectively sealed with both ends of the motor pump housing. Cooling is achieved through a cooling oil channel, which connects from one end of the motor pump housing near the plunger pump assembly to the second cavity and then divides into two paths, one path passing through the center of the rotating shaft, and the other path connecting to the first cavity and passing through the distribution plate. The coaxial integration of the drive control functions is achieved, and the cooling effect is good.

The present invention discloses an electronically controlled evaporator and its control method. The electronically controlled evaporator includes: a medicine storage module, a plunger pump system, and a valve seat module; the medicine storage module includes a medicine tank, a medicine lid, and a bent plate; the plunger pump system is composed of a cylinder block, a piston rod, a floating joint, a lead screw, a pump motor, a pipe joint, etc., to realize the suction and pushing of anesthetic liquid; the valve seat module includes a valve seat, an air outlet, a diffusion joint, an air inlet, a lower valve plate of the evaporation core, an upper valve plate of the evaporation core, an evaporation core motor, an evaporation core spring, a ferrule, a switching valve motor, an upper valve plate of the switching valve, a lower valve plate of the switching valve, etc., to realize the on / off of the anesthetic liquid and the volatilization of the anesthetic. The anesthetic output by the plunger pump of the present invention can quickly volatilize and mix with fresh gas when entering the evaporation core, thereby realizing precise control of the anesthetic concentration. At the same time, when it is necessary to close the anesthetic output, the anesthetic liquid outlet can be quickly closed.

The invention discloses a corrosion-resistant radial plunger pump with a self-cleaning function, and relates to the technical field of radial plunger pumps, the corrosion-resistant radial plunger pump comprises a shell of a hollow structure, a vertically-arranged partition plate is fixed to the center of the interior of the shell in the length direction of the partition plate, and the length direction of the partition plate is perpendicular to the length direction of the shell; the partition plate divides the interior of the shell into two cavities, and the drainage plate is rotationally connected to one end, in the length direction of the partition plate, of the partition plate; according to the device, through cooperation of the drainage mechanism, the driving mechanism, the filter screens and other components, when the filter screen on one side is blocked, the filter screens generate displacement under the action of negative pressure suction, then the drainage plate is driven to turn, switching of the flowing direction of liquid flow is achieved, the blocked filter screen can be cleaned, the conveying work cannot be stopped, manual intervention is not needed in the process, and the working efficiency is improved. And shutdown operation is not needed, so that the production interruption time caused by blockage of the filter screen is shortened, the production efficiency is improved, and the maintenance frequency is reduced.

The utility model belongs to the technical field of glue supply, and particularly relates to a high-pressure fluid supply device which comprises a bearing base, first power cylinders are fixedly installed above the left end and the right end of the bearing base respectively, an air control box is fixedly installed on the right side wall of the first power cylinder on the right side, and a pressure plate pump is fixedly installed at the top end of each first power cylinder. A second power air cylinder is fixedly installed in the middle of the bottom end of the pressure plate pump, the output end of the second power air cylinder is fixedly connected with a plunger pump, a glue outlet is formed in the front outer wall of the top of the plunger pump, a pressure plate body is fixedly installed at the bottom of the plunger pump, and an exhaust assembly is installed on the upper front portion of the pressure plate body. The whole plunger pump is made of 304 stainless steel materials, has high strength and good corrosion resistance, the maximum working pressure is 440 bar, and the plunger pump is convenient to meet the operation requirement of high-pressure fluid supply.

The invention discloses an oil supply control system of a hydraulic pump station, and relates to the technical field of hydraulic systems. The oil supply control system of the hydraulic pump station comprises an oil tank; the oil inlet end of the oil supply pump communicates with the oil tank, and the oil outlet end of the oil supply pump is connected to the oil suction end of the variable plunger pump through an oil supply path; a heat exchanger and a filter are sequentially arranged in the oil supply path and used for conducting temperature adjustment and particle filtration on oil. The oil supply path is connected with a bypass pipeline in parallel, the bypass pipeline is communicated with the oil tank through a one-way valve, the opening pressure of the one-way valve is smaller than 2 bar, and the one-way valve is used for guaranteeing the positive pressure of the oil suction end of the variable pump. The oil outlet end of the variable displacement piston pump is connected to an external hydraulic system and is provided with a high-pressure filter; the detection device is arranged in the oil supply path and used for collecting oil temperature and / or pressure signals; and the control module is connected with the detection device and the execution components and is configured to control the start and stop states of the oil supply pump, the variable displacement piston pump and the heat exchanger according to the comparison result of the detection result and a preset threshold value.

The invention relates to the technical field of rock / soil mass seepage-stress coupling, and discloses a rock-soil mass seepage-stress coupling visualization device and a test method thereof. The rock-soil body seepage-stress coupling visualization device integrates a seepage pressure system controlled by a high-precision plunger pump, a confining pressure and back pressure control system, a loading and measuring device and a visualization observation system composed of a PIV particle image measuring instrument and a three-dimensional XTDIC full-field strain measuring system, and an experiment platform with comprehensive and accurate functions is formed. The device not only can accurately control and measure the seepage pressure, but also can carry out permeability research on the rock / soil body in various stress states, and directly observes and records the seepage field and the structural evolution process in the rock / soil body through an intuitive visual means. The device not only improves the experiment efficiency, but also greatly enhances the intuition and accuracy of research, and provides powerful support for deeply understanding the microscopic and macroscopic behaviors of the rock / soil body under the seepage-stress coupling action.

A packing assembly to be disposed within a stuffing box defined by a fluid end of a body of a reciprocating plunger pump includes an elastomeric component and a wear component. The elastomeric component has an at least partially tapered inner diameter and an outer diameter and, in use, engages the stuffing box on the outer diameter and is axially compressed within the stuffing box. The wear component sealably engaging the elastomeric component across the at least partially tapered inner diameter and dynamically contacts the plunger to form a dynamic seal.

The utility model discloses a high-precision valveless plunger pump capable of freely adjusting flow, which is characterized in that the volume of the whole pump is reduced through an adapter, the movement accuracy of a piston rod of a pump body is ensured, the flow precision of the pump body is greatly improved, the angle of a piston cylinder body is adjusted to adjust the flow, and the flow requirements of various places are met. A motor body of the motor is fixed to one side plate of the supporting plate, the adjusting plate is arranged on the other side plate of the supporting plate, a plunger pump cylinder body is fixedly arranged on the upper side of the adjusting plate, an adjusting long hole is formed in the connecting position of the supporting plate and the adjusting plate, and the adjusting plate and the supporting plate are fixed through an adjusting bolt penetrating through the adjusting long hole. Two ends of the steering gear are respectively connected with a power output shaft of the motor and a plunger pump piston rod, and the plunger pump cylinder body and the plunger pump piston rod are made of ceramics; the plunger pump can be widely applied to the field of plunger pumps.

The invention relates to the technical field of plunger pumps, and discloses a valve body and a plunger pump, two valve bodies and two valve seat bodies are included, one sides of the bottom ends of the two valve bodies are each provided with a first leather sheath, the other sides of the bottom ends of the two valve bodies are each provided with a second leather sheath, and the left end and the right end of one side of each second leather sheath are each provided with an insertion groove; one end of the inserting block is fixedly connected to one side of the first leather sheath, an air bag is fixedly connected to the inner side wall of the inserting groove, and the bottom end of the air bag communicates with a pipeline. According to the valve body, the first leather sheath and the second leather sheath are placed on the outer side of the valve body, the inserting block enters the inserting groove, air is injected into the air bag so that the air bag can expand, and the gap between the inserting groove and the inserting block can be sealed; when the air bag is filled with air, the second spring can pull the sealing ball to move downwards and be tightly attached to the opening in the top of the base, the pipeline is plugged, and therefore a worker can conveniently fix the leather sheath to the outer side of the valve body.

The present invention relates to the technical field of plunger pumps, and in particular, to a plunger assembly and a plunger pump. The plunger assembly comprises a cylinder unit, a plunger unit and a slipper unit. The plunger unit is slidably inserted in the cylinder unit; a plunger cavity is formed between the end of the plunger rod of the plunger unit away from the plunger ball head and the cylinder unit; a weight reduction cavity in the plunger rod passes through to the end of the plunger rod away from the plunger ball head; a partition in the weight reduction cavity divides the weight reduction cavity into a buffer cavity and a connecting cavity; the connecting cavity is connected to the plunger cavity; the oil through hole in the plunger ball head is connected to the connecting cavity; a first shock-absorbing hole formed at one end of the partition near the plunger cavity is respectively connected to the buffer cavity and the plunger cavity; a second shock-absorbing hole at one end of the partition near the plunger ball head is respectively connected to the buffer cavity and the oil through hole; the slipper unit is spherically hinged with the plunger ball head; one end of the oil through hole passes through to the surface where the plunger ball head and the slipper unit fit. In this way, the problem of how to reduce pressure pulsation in the plunger assembly is solved.

A plunger for reducing pressure pulsation of an axial plunger pump comprises a plunger body, and an overflowing channel is formed in the plunger body. At least two limiting devices are sequentially arranged in the overflowing channel in the oil flowing direction, a pulsation reducing device is slidably connected between the two limiting devices, and the pulsation reducing device comprises at least two flow guiding pieces, a first elastic piece and a filtering piece; the flow guide part comprises a fixed second flow guide plate and a first flow guide plate capable of swinging along with flowing of the oil liquid, so that the flow guide part can buffer the oil liquid at different flow speeds. In the oil liquid flowing process, the pulsation reducing device moves in the oil liquid flowing direction, pulsation energy of oil liquid in the moving process is weakened by a combined structure of the filtering piece and the flow guiding piece, and after the pulsation reducing device moves to one side to abut against one limiting device, the first elastic piece continues to be stressed and deforms; and then the first elastic piece further absorbs the residual pulsation energy through the recovery effect of the compressed first elastic piece.

Disclosed is a fracture plugging simulation experimental device and an experimental method thereof. The device comprises a simulated wellbore, a simulated formation, a simulated fracture, a plurality of pressure sensors and vales, a mixing barrel, a liquid injection port and a pressurization port, a liquid collection tank, a plugging fluid storage tank, a heating device, etc. The method comprises: loading the simulated formation with the simulated fracture in the simulated wellbore, closing the second valve and turning on the mixing device, injecting a lost circulation material into the mixing barrel, closing the liquid injection port and turning on the heating device and pressurizing, stopping pressurizing and opening the second valve to establish a plugging process, turning on the plunger pump to continue pressurizing, and collecting a fluid pressure change of the simulated fracture in the plugging process; and calculating a pressure-bearing capacity of plugged fracture.

A pumping system, comprising: a pump fluid end comprising a plurality of pump chambers, each pump chamber comprising a bore having a reciprocatable plunger disposed therein, a suction valve, and a discharge valve; a prime mover mechanically coupled to the fluid end [by a drivetrain] and configured to reciprocate the plungers; and a controller communicatively coupled to the prime mover, the fluid end, or both and configured to alert a user re a pump malfunction, initiate corrective action of the pump malfunction, or both in response to: (a) an indication of torque reversal during operation of the pumping system, (b) an indication of negative flow rate from the pump during operation of the pumping system, (c) an indication of leakage of (i) a single discharge valve in a 3-plunger pump or (ii) discharge valves associated with two plungers in adjacent firing order, or (d) any combination of (a)-(c).

The invention discloses a high-temperature supercritical carbon dioxide steady-state jet flow experiment device and method, and the device comprises a liquid storage tank, a liquid booster pump, a plunger pump, a first mass flow meter, a second mass flow meter, a heating section, a first electric control valve, a first-stage cooler, a second-stage condenser, a back pressure valve, and a main loop system composed of related pipe fittings and equipment. The gas supply system consists of a carbon dioxide gas cylinder group, a gas storage tank, a gas booster pump and related pipe fittings and equipment; and the jet experiment section consists of a spray pipe, a second electric control valve, an electric stop valve and related pipe fittings and equipment. The invention further provides an experimental method of the device. According to the invention, the steady-state jet flow experiment research of supercritical carbon dioxide under the high-temperature condition can be realized.

The invention belongs to the technical field of plunger sealing of high-pressure plunger pumps, and particularly relates to a high-pressure plunger pump plunger assembly self-compensation type abrasion-resistant sealing structure which comprises a high-pressure plunger pump body and an oil suction and outlet tank, the right end of the high-pressure plunger pump body is connected with the oil suction and outlet tank, and a fixing assembly is detachably installed at the right end of the interior of the high-pressure plunger pump body. And the right end of the fixing assembly communicates with the left end of the inner wall of the oil suction and outlet tank, a first sealing structure is detachably installed at the right end of the interior of the fixing assembly, and the high-pressure plunger pump main body is used for driving the first sealing structure to conduct fine opening and closing operation. The friction coefficient of the sealing structure is reduced, and the friction heat conductivity coefficient of the plunger assembly is reduced, so that the wear resistance of the sealing structure is improved, material aging caused by temperature rise is prevented, multiple times of self-compensation can be conducted on a wear gap, and then the durability of the sealing structure is greatly improved.

The invention discloses a gear and gear ring transmission high-speed and high-pressure axial connecting rod plunger device, which relates to the technical field of hydraulic transmission and control, and comprises a cylinder body rotatably arranged in a shell accommodating cavity, a transmission shaft in transmission connection with the cylinder body, a gear ring connected with the cylinder body, a crowned tooth return plate obliquely arranged and driven by the gear ring, and a plunger slidably arranged in a cylinder body hole, the sliding shoe friction mechanism is arranged in the containing cavity, the sliding shoe is attached to the wear-resisting lining plate, the sliding shoe is connected with the plunger through a connecting rod, the flow distribution friction mechanism is arranged in the containing cavity, the floating lining plate is connected with the cylinder body through a floating sleeve, and the flow distribution plate is connected with the rear end cover. By adopting gear and gear ring transmission, lateral force borne by a plunger in an axial plunger pump or a motor can be eliminated, and the risk that a plunger ball head portion loses efficacy is avoided. During working, the gear ring and the cylinder body rotate synchronously, and the crowned tooth return plate rotates synchronously under the action of the gear ring, so that the stress states of the sliding shoes and the plungers are greatly improved, the reliability of the structure is improved, and the service life of the structure is prolonged.

The invention provides an ultrahigh-pressure vertical plunger pump. The ultrahigh-pressure vertical plunger pump comprises a plunger pump base, a plunger pump body and a plunger pump cover. A transmission structure is arranged on the inner side of the plunger pump base, a receding hole communicated with an inner cavity of the plunger pump base is formed in the upper end of the plunger pump base, and the output end of the transmission structure extends into the receding hole. A water inlet hole is formed in the side wall of the plunger pump body, a high-pressure cylinder is arranged on the inner side of the plunger pump body, a water passing hole is formed in the side wall of the upper end of the high-pressure cylinder, a sealing bush is arranged in the high-pressure cylinder, a plunger shaft is slidably arranged on the inner side of the sealing bush, and the lower end of the plunger shaft is connected with the power output end of the transmission structure. An annular lubricating gap is formed between the sealing bush and the plunger shaft; a drainage channel is arranged on the inner side of the plunger pump cover, and a one-way valve structure is arranged at the joint of a water inlet of the drainage channel and an inner cavity in the upper end of the high-pressure cylinder. Compared with a sealing ring, the sealing bush has higher strength and higher wear resistance, and is not easy to wear in the use process.

The invention discloses a digital hydraulic pump controlled by a high-speed switch valve bridge. The digital hydraulic pump comprises a motor, a swash plate type axial plunger pump, a variable adjusting unit, a pressure compensation unit, a closed-loop control unit, an unloading unit and a filter. The motor is connected with the swash plate type variable displacement piston pump; the variable adjusting unit is connected with the swash plate type variable plunger pump; the pressure compensation unit is connected with the variable adjusting unit to carry out differential pressure compensation on the variable adjusting unit; the closed-loop control unit is connected with the variable adjusting unit and controls the output flow of the variable adjusting unit according to a feedback signal; the high-speed switch valve is subjected to pressure difference compensation through the pressure difference compensator, so that the flow of the high-speed switch valve is not affected by load changes any more, and output pressure fluctuation of the swash plate type variable displacement piston pump is reduced; a high-speed switch valve bridge serves as a pilot level, and digital accurate control over the output pressure of the hydraulic pump is achieved through a closed-loop control unit; the high-speed switch valves are connected in parallel, multi-stage flow output and differential flow control are achieved, and the control precision and the response speed of the digital hydraulic pump are improved.

The invention relates to the technical field of injection molding machine hydraulic control, in particular to an injection molding machine hydraulic pump control system and a control method thereof, and aims to solve the problems of high energy consumption, high cost or poor temperature control of a traditional hydraulic scheme. The system comprises a hydraulic oil tank, a driving unit and an oil way control module. The driving unit comprises a driving motor, and a fixed displacement pump and a plurality of swash plate type variable displacement piston pumps which are driven by the driving motor, and swash plates of the variable displacement pumps can be switched between negative and positive angles so as to adjust the displacement or actively suck oil; the oil way control module is provided with a flow collecting valve set capable of switching flow collecting / independent states of oil outlet ways of the constant displacement pump and the variable displacement pump, the integrated cooling unit forms an independent cooling filtering loop, the temperature and pressure adjusting assembly is combined with a temperature sensor to control temperature and adjust pressure, and the pressure limiting protection valve set is connected with the constant displacement pump and the variable displacement pump. And the pressure limiting protection valve is matched with a pressure sensor to realize overpressure protection. According to the invention, cost and energy saving are both considered, precise temperature control and pressure protection are realized, and system stability and plastic part forming precision are improved.

The invention relates to a plunger pump system, a control method and a filter press. The plunger pump system comprises an oil storage container, an oil pump device, a plunger device and a hydraulic device. The hydraulic device comprises two hydraulic assemblies, each hydraulic assembly comprises an oil cylinder and a piston, the piston divides the oil cylinder into a rod cavity and a rodless cavity, and the rod cavities of the two hydraulic assemblies or the rodless cavities of the two hydraulic assemblies are communicated with each other. The oil pump device and the hydraulic device are connected through an oil supply pipeline, a liquid flow reversing device and a one-way valve are connected to the oil supply pipeline, the flow direction of hydraulic oil in two branch pipelines of the oil supply pipeline is controlled by the liquid flow reversing device to be periodically switched, and the flow directions of the hydraulic oil in the branch pipelines are opposite at the same moment. One end of the electric control overflow device is connected between an oil pump device and a one-way valve, the other end of the electric control overflow device is connected with an oil storage container, and the electric control overflow device is controlled to conduct an oil outlet of the oil pump device and the oil storage container during reversing of the liquid flow reversing device and discharge impact of hydraulic oil reversing on the plunger pump system.

The utility model discloses a constant power controller with pressure control for a high-pressure plunger pump, which comprises a shell, a variable piston is arranged in the shell, a return spring connected with the shell is arranged at the small end of the variable piston, a shifting block rotationally connected with the shell is arranged on the radial side of the variable piston, and a power control valve is arranged on one side of the shifting block. A variable supporting column extending towards the shifting block is arranged on the variable piston in the radial direction, a guide hole is formed in the end face of the variable supporting column, the bottom face of the guide hole is communicated with the small end of the variable piston, a variable plunger is arranged in the guide hole and comprises a plunger body and a sliding shoe, the plunger body is in sliding connection with the variable supporting column, and one side of the sliding shoe is in spherical hinge joint with the plunger body. And the other side of the sliding shoe is in surface contact with the shifting block. The utility model has the advantages of longer service life and higher constant power control precision.

A pumping system includes an electric fracturing device and multiple power supply systems. The electric fracturing device includes a plunger pump, a main motor for driving the plunger pump, and at least one auxiliary electric device. The multiple power supply systems include at least one main power supply and at least one auxiliary power supply. The main power supply supplies electric power to the main motor, and the auxiliary power supply supplies electric power to the at least one auxiliary electric device.

A pure electric mining dump truck hydraulic system comprises a hydraulic steering system and a hydraulic lifting system, and the hydraulic steering system comprises a steering plunger pump, an energy accumulator, a multi-way valve assembly, a steering valve, a two-way unloading valve, a steering cylinder and an electromagnetic reversing valve; the lifting system comprises a gear pump, an overflow valve, a lifting valve, an oil suction filter, a lifting control handle, a pilot valve block, a bounce valve, a lifting cylinder and a lifting hydraulic oil tank. And the steering plunger pump and the lifting plunger pump are driven by a double-shaft extension motor. A single motor can drive the two hydraulic systems to operate stably, space is saved, meanwhile, jamming and preparation time of the two systems during operation and switching are shortened, energy is saved, and efficiency is improved.

The present invention may disclose a turbine fracturing equipment, including a transporter, a turbine engine, a reduction gearbox, a transmission mechanism and a plunger pump, wherein an output end of the turbine engine may be connected to one end of the reduction gearbox, the other end of the reduction gearbox may be connected to the plunger pump through a transmission mechanism; the transporter may be used to support the turbine engine, the reduction gearbox, the transmission mechanism and the plunger pump; the transporter may include a chassis provided with a transport section, a bearing section and a lapping section which may be connected in sequence; while the turbine fracturing equipment may be in a working state, the bearing section can contact with the ground, while the turbine fracturing equipment may be in a transport state, the bearing section may not contact with the ground.

The present disclosure relates to a crosshead box and a plunger pump. The crosshead box is a substantially rectangular box formed by an integral forming manufacturing process. The crosshead box is provided with a plurality of crosshead inner cavities, and the plurality of crosshead inner cavities are arranged in the transverse direction of the crosshead box. The crosshead box is further provided with a plurality of gas discharging cavities, and each gas discharging cavity penetrates through the crosshead box in the longitudinal direction of the crosshead box and is communicated with the corresponding crosshead inner cavity. The plunger pump is provided with the crosshead box. According to the crosshead box and the plunger pump of the present disclosure, the service life is greatly prolonged by means of integral forming, and the gas pressure in the box can be kept balanced all the time during operation, thereby improving the operation stability of the device, and thus further prolonging the service life.

The invention discloses a novel energy-saving efficient hydraulic system of a rail unloading device. The novel energy-saving efficient hydraulic system comprises a hydraulic oil tank, a plunger pump set, a conveyor, a winch, a cooling mechanism and a radiator. The conveyor comprises bottom supporting wheels, conveying pressing wheels are arranged over the bottom supporting wheels, each conveying pressing wheel is provided with a pair of rail pressing oil cylinders, and the conveying pressing wheels are pressed on the steel rails through the rail pressing oil cylinders for conveying; the liquid inlet end of the plunger pump set is communicated with the hydraulic oil tank through a pipeline, the liquid outlet end of the plunger pump set is communicated with the motor liquid supply subsystem and the cylinder body liquid supply subsystem, the liquid outlet end of the winch motor is communicated with the liquid inlet end of the cooling mechanism through a liquid return pipeline, and the liquid outlet ends of the two conveying motors are communicated with the liquid inlet end of the cooling mechanism through the liquid return pipeline. The liquid outlet end of each rail pressing oil cylinder communicates with the liquid inlet end of the cooling mechanism through a liquid return pipeline, the liquid outlet end of the cooling mechanism communicates with the liquid inlet end of the radiator, the liquid outlet end of the radiator communicates with the hydraulic oil tank, the rail pressing oil cylinders, the rail conveying machine and the winch can be driven, and high efficiency and energy saving are achieved.