976 results about "Plunger pump" patented technology

The invention discloses a modularized hydraulic system testing system and method, and relates to the technical field of hydraulic testing, and the method comprises the following steps: S1, collecting outlet pulsating pressure signals of a high-pressure plunger pump and a low-pressure vane pump by adopting a nanosecond-level synchronous time mark system, generating a phase residual error map, and calculating a phase residual error map of the outlet pulsating pressure signals of the high-pressure plunger pump and the low-pressure vane pump; the hidden resonance risk is preliminarily judged through frequency drift and amplitude gradient calculation; and S2, on the basis of the synchronous acquisition base line, carrying out cross spectrum coherence degree calculation and phase difference time sequence analysis on the pulsating pressure sequence, identifying a frequency dislocation anchor point, generating a pump source pulsating interference fingerprint, and determining a time window of recessive resonance. According to the method, real-time identification, dynamic intervention and closed-loop control of recessive resonance in the hydraulic system are realized through nanosecond-level synchronous acquisition, phase conjugate inversion and frequency dislocation traction strategies, energy coupling caused by frequency dislocation is effectively avoided, the operation stability and safety of the system are improved, and the service life of equipment is prolonged.

The utility model relates to the technical field of reciprocating plunger pumps, and provides a plunger pressing sleeve assembly of a reciprocating plunger pump, which comprises a pressing sleeve, one end of the inner wall of the pressing sleeve is provided with a limiting part, and one side of the limiting part is sleeved with a spring and a sealing filler which are tightly attached to the inner wall of the pressing sleeve; through the wave spring, the sealing performance is improved, and the abrasion loss of a sealing material is compensated; the structure is simple, the dismounting efficiency is high, and the maintenance cost and time are reduced; the leakage flow direction is changed, and emulsification of crankcase lubricating oil is avoided; the device is made of a high-strength material, and is good in compression resistance and corrosion resistance.

According to the intelligent plunger pump temperature control method and system based on model predictive control, a thermodynamic model predictive control algorithm is introduced, key parameters such as the oil temperature of a plunger pump body, the water temperature of a water tank and the environment temperature are brought into a unified calculation model, and cooperative closed-loop control over a heating plate, a semiconductor chilling plate and a circulating pump is achieved. By constructing the heat balance equation of the lumped heat capacity system and solving the rolling optimization problem in the limited time domain, the heat load change of the plunger pump can be accurately predicted and adjusted in advance, the oil temperature is always stabilized in the preset target interval, and the temperature control precision is remarkably improved; meanwhile, mutual exclusion constraints of heating and refrigerating power are set, and weights are dynamically adjusted and optimized according to working conditions, so that meaningless consumption of energy is effectively avoided, and the operation cost of equipment is reduced; in addition, according to the control method, preheating, cooling and energy-saving modes can be automatically recognized, so that the plunger pump is rapidly started in the severe cold environment and stably operates in the high-temperature environment.

The invention belongs to the technical field of lifting tools, and particularly discloses a lifting device oil way system, a lifting device, a jack, a pressing machine and a crane. The oil way system of the lifting device comprises a lifting oil cylinder, an oil tank, a first oil inlet way, a second oil inlet way and an oil return pipeline, the first oil inlet path is an oil inlet path of the gear pump assembly; and the second oil inlet path is an oil inlet path of the plunger pump assembly. When the lifting device is in the no-load or low-pressure condition, the gear pump assembly can rapidly pump in much hydraulic oil with small pressure so that the lifting device can rapidly ascend or descend, the defect that in the prior art, the displacement speed of a hydraulic lifting pump is low under the no-load or low-pressure condition is overcome, and the user experience is improved; when the hydraulic lifting pump is in a high-pressure condition, the plunger pump assembly can pump high-pressure hydraulic oil into the lifting oil cylinder so that the lifting oil cylinder can ascend or descend slowly, the lifting device can move slowly, and the normal use requirement of a user is met.

The disclosure discloses an oil circuit system, a lifting device, an electric jack, a press, a crane, and a tire mounting / dismounting and transport apparatus. The oil circuit system comprises a lifting oil cylinder, the tank, the first oil feed line, the second oil feed line, the oil inlet / outlet line, the pressure relief line, the oil return line, the first valve, the second valve; the first oil feed line is the gear pump assembly oil feed line; and the second oil feed line is the plunger pump assembly oil feed line. Under no-load or low-pressure conditions of the lifting device, the gear pump assembly can quickly pump a larger volume of low-pressure hydraulic oil, enabling quick lifting or lowering of the lifting device. Under high-pressure conditions, the plunger pump assembly can quickly pump higher pressure hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

The invention relates to the technical field of fuel nozzle performance testing, in particular to an integrated high-precision fuel flow testing method and detection method.The testing method comprises the steps that a spraying test bed or a nozzle test bed is correspondingly selected based on whether a to-be-tested workpiece tests the spraying angle or not; after the integrated high-precision fuel oil flow testing device is in a reset state, a corresponding motor rotating speed is input to a digital control system based on the calibrated flow of the workpiece to be tested, a plunger pump of a high-pressure oil supply system is started, and oil liquid in an oil tank system is pumped to a corresponding spray test bed or nozzle test bed to run; the actual pressure difference of the workpiece to be measured is collected and transmitted to the digital control system, the actual pressure difference and the target pressure difference are compared, and the actual pressure difference is adjusted; when the preliminarily obtained actual oil flow is larger than a detection threshold value, the actual oil flow corresponding to the current flowmeter is defined as corresponding detection data; and when the preliminarily obtained actual oil flow is smaller than or equal to the detection threshold value, a weighing method is adopted for flow detection.

The invention belongs to the technical field of underwater bionic robots, and particularly relates to a robotic fish deformable tail fin based on hydraulic drive and a working method thereof. According to the robotic fish based on hydraulic driving, a four-cylinder plunger pump is arranged in the fish head to serve as a hydraulic power source, the fish body comprises a large connector, a middle connector and a small connector, the large connector distributes hydraulic oil to a bionic driving unit set of a joint I, left-right bending of the fish body is achieved, meanwhile, the hydraulic oil is conveyed to the middle connector through an oil conveying pipe, and the small connector distributes the hydraulic oil to the joint I; after pressure synchronization is guaranteed through a pressure equalizing annular pipeline in the fishtail, a piston of a joint II is driven to move, the fishtail is designed to be a deformable tail fin, a tail arm is pushed to rotate through the synchronously-moving piston, and then a tail edge pipe is driven to deform and relatively move, so that the fishtail can dynamically change the area, the camber and the shape in the swimming process; therefore, different cruising speed and maneuverability requirements are met. Through the centralized hydraulic system and bionic structure design, active controllable adjustment of the shape of the deformable tail fin is achieved.

The utility model relates to the technical field of plunger pumps, and discloses a hydraulic variable plunger pump cylinder which comprises a plunger pump, a storage bin is fixedly connected to the top of the outer surface of the plunger pump, a supporting plate is slidably connected to the inner surface of the storage bin, and a protection plate is connected to the outer surface of the supporting plate in a contact mode. The outer surface of the protection plate is slidably connected with the inner surface of the storage bin, and a telescopic assembly is arranged on the outer surface of the supporting plate. According to the transmission shaft protection device, the two sets of supporting plates and the two sets of protection plates are arranged, the transmission shaft can be comprehensively protected from the two sides, the top of the outer surface of one set of protection plates is rotationally connected with a connecting piece, and the right side of the outer surface of the connecting piece is fixedly connected with the top of the outer surface of the other set of protection plates through a bolt B; in this way, the two sets of protection plates can be firmly connected together to form a complete protection structure, and the transmission shaft is effectively prevented from being damaged by external factors in the transportation process.

The utility model relates to the technical field of valve maintenance equipment, in particular to a portable anti-explosion valve cleaning device, which is characterized in that the polarities of the opposite surfaces of two fixed magnetic field sources are the same, and a movable electromagnetic coil is arranged between the two fixed magnetic field sources; the control unit is used for periodically changing the polarity of current supplied to the movable electromagnetic coil and driving the movable electromagnetic coil to reciprocate, the plunger pump is provided with a grease inlet and a grease outlet, the grease outlet is used for being communicated with a valve to be cleaned, and the grease inlet is used for being communicated with a grease body box; according to the utility model, the electromagnetic driving mechanism is adopted to replace the existing manual driving, so that the pumping-out speed and the working efficiency of cleaning fluid or lubricating grease are improved, the maintenance operation time of a single valve is shortened, and operators are liberated from heavy repeated physical labor.

The utility model discloses a fixing device for plunger pump body machining, which comprises a bottom plate, and a plurality of machining stations are arranged on the upper side of the bottom plate; the machining station comprises a base arranged on the bottom plate. The supporting column is arranged in the middle of the upper side of the base, and a connecting column is inserted into the upper end of the supporting column; the mounting block is fixedly arranged at the upper end of the connecting column; the cover plate is detachably arranged right above the connecting column through a bolt; the pressing plates are arranged on the two sides of the supporting column and used for pressing a plunger pump body; the driving device is arranged at one end of the lower side of the pressing plate, and a piston rod of the driving device is connected with the pressing plate. The pump body fixing device can solve the problems that an existing fixing device is fixed through a pressing plate or a bolt, vibration and torque generated in the machining process cannot be effectively handled, and the percent of pass of a pump body is low.

The utility model discloses a film scratching instrument, belongs to the field of detection equipment, and is used for solving the problems of how to improve the conveying stability of a marker solution and the continuity of spraying lines. The film scratching instrument comprises a tandem type double-plunger reciprocating pump, a film scratching head and a liquid conveying pipeline. The tandem type double-plunger reciprocating pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is used for inputting a marker solution, the liquid outlet is used for outputting the marker solution, the film scratching head is provided with a spray head, and the spray head is connected with the liquid outlet through a liquid conveying pipeline and used for spraying the marker solution onto test paper. Due to the fact that the tandem type double-plunger reciprocating pump can provide stable pressure and flow, compared with a traditional manual spraying pump or a single-plunger pump, a marker solution sprayed to test paper through film scratching is more uniform in distribution, the continuity of spraying lines is better, and the stability of spraying quality is improved.

The present invention relates to a rotary tilting plate axial piston pump (1) for pumping liquids, comprising: a head (25); a plurality of cylinders (30) formed in the head (25) in a number greater than two, the plurality of cylinders (30) having axes (C) parallel to each other and arranged radially about a common axis (A) parallel to the axes of the cylinders; a plurality of pistons (75) each piston slidably inserted into a corresponding cylinder (30) of the plurality of cylinders (30) for pumping liquids; and a plurality of delivery pipes (145) formed in the head (25), each of the plurality of delivery pipes (145) extending directly from the corresponding cylinder (30) to a corresponding delivery valve (120) and arranged transversely to the axis (C) of the corresponding cylinder. The head (25) has a first side (61) and a second side (62), the second side (62) being opposite to the first side (61) with respect to an imaginary orthographic plane (S), the imaginary orthographic plane (S) including the common axis (A) and parallel to the axis (C) of the cylinder (30), wherein the plurality of cylinders (30) includes a first arranged cylinder and a second arranged cylinder, the axis (C) of the first arranged cylinder being between the first side (61) and the imaginary orthographic plane (S), and the axis (C) of the second arranged cylinder being between the second side (62) and the imaginary orthographic plane (S). A delivery conduit (145) extending from a cylinder (30) in the first arranged cylinder extends from the respective cylinder (30) toward the first side (61), and a delivery conduit extending from a cylinder in the second arranged cylinder extends from the respective cylinder (30) toward the second side (62).

The invention relates to the technical field of membrane scale inhibitor performance testing, in particular to a membrane scale inhibitor performance dynamic testing method and system. The operation condition of the same section of membrane element is simulated in the mode that multiple circulation periods are carried out, membrane inlet water is concentrated step by step, the frequency of a high-pressure plunger pump is reduced step by step along with the increase of the number of circulation periods so as to reduce the water inlet flow of a membrane assembly, and the recovery rate of the membrane assembly is synchronously adjusted to a proper set value in each circulation period; by monitoring turbidity data of an online turbidity meter on the membrane concentrated water side, when the turbidity of the concentrated water suddenly and abnormally rises, the scaling phenomenon can be judged to occur, a test end point is reached, and the periodic concentration cycle operation is ended. The technical problems that in the prior art, the actual membrane system operation condition cannot be simulated, the operation condition is greatly different from the actual scaling process, the experiment end point and the evaluation result are easily influenced by ion measurement errors, the operation is complex, the operation intensity is large, the reagent consumption and cost are high, and the test time is long are solved.

The invention relates to the technical field of oil well paraffin removal, in particular to an electric submersible screw pump well anti-paraffin-deposition chemical injection and thermal washing integrated device. Comprising a pesticide injection barrel, a high-pressure plunger pump, a three-way valve and a connecting pipe, the connecting pipe is fixedly connected and communicated with a plurality of butt-joint pipes, annular injection assemblies with the same number as the butt-joint pipes are arranged outside an oil pipe, and the butt-joint pipes are communicated with the corresponding annular injection assemblies respectively. A paraffin remover and hot water are injected at fixed points at different depths of an oil pipe through a plurality of butt joint pipes, so that a paraffin removal medium completely bypasses the electric submersible screw pump, chemical swelling and high-temperature thermal damage of the agent to stator rubber are avoided fundamentally, the service life of the pump is remarkably prolonged, meanwhile, the paraffin remover and the hot water are continuously supplemented at different depths, and the service life of the pump is prolonged. The concentration of the paraffin remover is kept stable, the temperature of hot water is kept, the dissolving strength of the paraffin remover on a paraffin precipitation layer and the melting effect of the hot water on wax are ensured, and the paraffin removal thoroughness and the operation efficiency are greatly improved.

The utility model relates to the technical field of petroleum equipment, in particular to a novel plunger pump valve taking device which comprises a novel plunger pump assembly, the novel plunger pump assembly comprises a valve taking rod, a push rod, a handle pin and an adjusting nut, the push rod is connected with the valve taking rod in a sliding mode and located in the center of the interior of the valve taking rod, and the handle pin penetrates through the valve taking rod to be detachably connected with the push rod. The plunger pump assembly is detachably connected with the valve taking rod and located on one side of the outer surface of the push rod, the adjusting nut is detachably connected with the valve taking rod and located on the outer surface of the valve taking rod, the adjusting nut is arranged below the handle pin, an original structure is modified and replaced with the novel plunger pump assembly, and therefore the problems that an existing valve taking device has certain defects, and a valve body is prone to being damaged are effectively solved.

The utility model provides an automatic lubricating device of a bending machine, which relates to the field of lubricating devices and comprises an oil storage tank and a plunger pump, a main oil pipe is arranged at the output end of the plunger pump, a branching device is connected to the output end of the main oil pipe, a plurality of groups of auxiliary oil pipes are connected to the output end of the branching device, and a self-cleaning structure is further arranged on the main oil pipe. Lubricating oil in the oil storage tank is pumped out through the plunger pump, conveyed into the branching unit through the main oil pipe and then dispersed into the auxiliary oil pipes, the auxiliary oil pipes convey the lubricating oil to all lubricating points of the bending machine, and therefore the automatic lubricating effect is achieved. The problems that existing manual adding is troublesome, inconvenient and prone to omission are solved, compressed air is conveyed into a pipeline through an air pump and an air pipe after equipment shuts down, the pipeline is flushed through the compressed air, impurities in lubricating oil are prevented from being accumulated in the pipeline, cleanliness of an adding structure is guaranteed, the service life of the equipment is prolonged, and practicability is high. The maintenance cost is reduced.

This application relates to the field of rotary piston pump technology, specifically to a rotary piston pump volume adjustment device, a piston pump, and a piston pump injection system. The volume adjustment device includes a frame, a fixed sleeve, a rotating shaft base, and a drive assembly. The fixed sleeve has a connecting structure for engaging with the rotary piston pump head. The rotating shaft base is mounted in a sliding groove on the fixed sleeve. The drive assembly drives the rotating shaft base to reciprocate. In this application, the drive assembly drives the rotating shaft base to reciprocate, causing the fixed sleeve and the pump head on the fixed sleeve to swing back and forth relative to the frame and pump body, thereby changing the tilt angle of the pump head relative to the pump body. This precise mechanical transmission method can accurately control the swing angle of the pump head, thus achieving precise adjustment of the rotary piston pump volume.

The utility model relates to the technical field of plunger pumps, in particular to a novel water-cooled plunger pump which comprises a motor assembly and a water pump assembly, the motor assembly comprises a shell, an installation cavity is formed in the shell, a driving motor and a reciprocating assembly are arranged in the installation cavity, and the output end of the driving motor is in transmission connection with the reciprocating assembly. The water pump assembly comprises a pump body, a compression cavity is formed in the pump body, a piston is movably arranged in the compression cavity and is in transmission connection with the reciprocating assembly, and the water outlet end of the compression cavity is communicated with a water outlet pipe. The water inlet pipe is communicated between the water inlet end of the compression cavity and the water outlet end of the water cooling channel, when cold water flows through the water cooling channel, heat dissipated by the driving motor in the mounting cavity can be absorbed, so that the motor is cooled, finally, the cold water can be discharged to the water inlet pipe from the water outlet end of the water cooling channel, and the shell is compact in structure, small in size and capable of being conveniently carried by a user.

1. The name of the design product: pump head shell assembly. 2. The use of the design product: the design product is used for the pump head shell of plunger pump. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combination state figure 1.

The utility model provides a wear-resistant high-sealing plunger pump, which relates to the technical field of plunger pumps and comprises a base, a pump sleeve is fixedly mounted on the upper surface of the base, two vertical rods are fixedly mounted on two sides of the upper surface of the base, a top plate is fixedly mounted at the upper ends of the vertical rods, and an air cylinder is fixedly mounted at the upper end of the top plate. The output end of the air cylinder penetrates through the top plate and is fixedly provided with a connecting plate. A worker controls the air cylinder to drive the connecting plate and the plunger to move, so that the plunger slides along the pump sleeve in a sealed mode, the plunger pump operates, when the plunger pump operates, the worker pours cooling liquid into the first connecting hole, the cooling liquid can enter the second connecting hole through the first connecting hole, and the cooling liquid can enter the second connecting hole through the second connecting hole. Therefore, the plunger moving along the pump sleeve in a sealed mode is cooled, and the situation that the abrasion degree is suddenly reduced due to softening of the plunger is avoided.

The present application relates to the technical field of plunger pump, in particular to a variable stroke double cavity plunger pump, which comprises a shell and a driving motor, two delivery pipes are arranged in the shell, two groups of crankshaft assemblies are arranged on the output shaft of the driving motor, the shell is connected with the corresponding delivery pipe through the crankshaft assembly, and a first one-way valve and a second one-way valve are symmetrically arranged in the delivery pipe along the axis of the crankshaft assembly; the one-way valve comprises a reset assembly, a sealing assembly and a clamping assembly arranged in sequence from top to bottom, the sealing of the sealing assembly is realized by the elastic extension of the reset assembly and the adhesion of the clamping assembly; the sealing assembly on the first one-way valve is provided with a first negative pressure assembly, the sealing assembly on the second one-way valve is provided with a second negative pressure assembly, and the first negative pressure assembly and the second negative pressure assembly are oppositely arranged; by arranging the negative pressure disc and the connecting pipe, the stress area of the sealing ball under the negative pressure condition is increased, the opening speed is accelerated, and the fluid passing efficiency is improved.

The invention provides a plunger assembly lubricated by a working medium and a radial plunger pump, and belongs to the field of plunger pumps. The plunger assembly lubricated by the working medium comprises a pump body and a plunger, a plunger hole allowing the plunger to reciprocate and a pumping channel with the middle communicated with the plunger hole are formed in the pump body, the pump body is provided with a columnar structure, a guide sleeve is arranged on the columnar structure in a sleeving mode, and a liquid inlet channel allowing the working medium to flow into the guide sleeve from the outside in a one-way mode is formed in the pump body. And the end wall of the guide sleeve is provided with a lubricating through hole through which a working medium in an inner cavity of the guide sleeve flows to the outer surface of the end wall and provides lubrication during working. The radial plunger pump lubricated by the working medium comprises the plunger assembly lubricated by the working medium. According to the radial plunger pump, a new pump structure is designed in the plunger assembly, the pump structure can pump a working medium to a part needing to be lubricated, and the working medium is used for providing lubrication for the working process of the radial plunger pump.

The present application relates to the field of engineering machinery, and discloses a hydraulic walking system, a control method of the hydraulic walking system and a hydrostatic loader, the system comprising: a plunger pump, a front axle motor, a rear axle motor and a shunt collector valve; the plunger pump is used for forward movement or reverse movement based on hydraulic oil; the shunt collector valve is connected with the plunger pump and is used for adjusting the flow direction of the hydraulic oil, so that the hydraulic oil flows into the front axle motor and the rear axle motor in parallel or in series; the front axle motor and the rear axle motor are connected with the shunt collector valve and are used for converting the hydraulic energy of the hydraulic oil into mechanical energy. The present application can realize the forward and reverse rotation of the hydraulic walking and the series and parallel connection of the motor, flexibly adjust the flow direction of the hydraulic oil, thereby providing different walking speeds and tractive forces, so that the small hydrostatic loader can normally operate under different working conditions.

The invention relates to the technical field of phosphorus chemical industry solid waste resource utilization, and particularly discloses a liquid triisopropanolamine feeding device for phosphorus slag micro powder dry grinding production, which comprises a liquid storage assembly, a metering conveying mechanism, a preheating mixing mechanism, a dry grinding machine butt joint assembly and an intelligent regulation and control module. The liquid storage assembly stores materials under the protection of nitrogen and at a constant temperature; the metering conveying mechanism achieves constant-temperature and accurate metering conveying of materials through a variable-frequency plunger pump, an electromagnetic flowmeter and a pipeline with a heat preservation heat tracing function. The preheating mixing mechanism atomizes liquid triisopropanolamine through an atomizing nozzle, and the liquid triisopropanolamine and phosphorus slag raw materials are forcibly mixed to be uniform in a heating cavity through a stirring assembly. The dry mill butt-joint assembly realizes sealed conveying of the mixed materials to the dry mill; and the intelligent regulation and control module is connected with and cooperatively controls each component. The problems of large metering error, high volatilization loss, non-uniform mixing and easy blockage in the prior art are solved, and the phosphorus slag grinding efficiency, the product quality and the system operation continuity are remarkably improved.

The invention discloses a stirring loss testing device for a rotating assembly in a high-speed plunger pump, and relates to the technical field of hydraulic elements, a simulation pump and a driving motor are installed on an inclinable platform through a connecting piece, a torque sensor is assembled on a cylinder body shaft of the simulation pump, and the simulation pump and the driving motor are in transmission connection through a coupler. The oil storage module and the stirring loss test module are isolated through the double-lip framework oil seal with the spring, and interference of a flow distribution pair is stripped; the inner wall of a plunger hole is pushed through a push rod in a cylinder hole of a cylinder body shaft, a traditional mode that a plunger is in direct contact with the cylinder hole is replaced, an oil way in the cylinder hole of the cylinder body shaft is adopted for oil injection lubrication, and measurement interference of a plunger pair is effectively removed; oil is injected to a spherical hinge joint by means of an oil path in the push rod, and the piston shoe pair is always soaked in the oil to realize sufficient lubrication by matching with the oil collection function of the inclinable platform and the swash plate with the oil storage tank, so that the measurement interference of the piston shoe pair is removed.

The invention discloses a safe-to-operate lubricating and resistance-reducing method for a bulk emulsion explosive conveying pipeline, which comprises the following steps: S1, a lubricating and resistance-reducing device is arranged at the feeding end of the bulk emulsion explosive conveying pipeline, the lubricating and resistance-reducing device comprises an inner ring and an outer ring which are coaxially arranged, and a sealing gap is formed between the inner ring and the outer ring; the surface of the inner ring is provided with a flow dividing groove extending in the axial direction. S2, sensitizing agents are pressurized and injected into the sealing gaps through a high-pressure plunger pump, and the sensitizing agents are evenly distributed through the flow dividing grooves and form a continuous lubricating film on the inner wall of the conveying pipeline; and S3, the emulsion matrix is conveyed to an inner ring channel of the lubricating and resistance reducing device, the emulsion matrix flows along the surface of the lubricating film, and layered conveying of the emulsion matrix and the sensitizer is achieved. The device has the advantages of being remarkable in resistance reduction effect, high in intrinsic safety performance, high in adaptability, stable in blasting quality, high in intelligent degree and the like.

The invention relates to the technical field of intelligent fire rescue, and discloses a small self-sensing intelligent special vehicle and a control method.The small self-sensing intelligent special vehicle is characterized in that a plurality of supporting foot devices are connected to the outer side face of a lower bottom plate, a gearbox is connected to the terminal of the top of the lower bottom plate, plunger pumps are connected to the output ends of the gearbox, and the number of the plunger pumps corresponds to that of the supporting foot devices; the top of the upper top plate is connected with a recognition device, and a spraying device corresponding to the fire extinguishing agent storage box is arranged at the front end of the top of the upper top plate; one side of the top end of the middle plate is connected with a fire extinguishing agent storage box, and the middle end of the top face of the middle plate is connected with a steering assembly. According to the device, the change of a fire source can be recognized in time in a complex environment, and accurate and effective fire extinguishing measures are taken. According to the device, a brand new thought and method are brought to forest fire fighting, the fire source checking and extinguishing efficiency is improved, secondary reburning of the fire is avoided, and the overall safety and emergency response capacity of fire fighting operation are improved.

The utility model provides a plunger lubricating device of a reciprocating plunger pump. The plunger lubricating device comprises a lubricating oil storage and supply module, a flow control module, a lubricating oil distribution module, a working condition monitoring module and a remote monitoring module, the lubricating oil storage and supply module is composed of a lubricating oil tank, the lubricating oil tank is made of high-strength corrosion-resistant materials so as to meet the lubricating requirement for long-time continuous work, the top of the lubricating oil storage and supply module is provided with a well-sealed oil injection port so that workers can supplement lubricating oil at regular intervals, and a filter screen is further installed at the oil injection port so that the lubricating oil can be conveniently and rapidly supplied. Impurities can be effectively filtered out and prevented from entering the lubricating oil tank to pollute lubricating oil, an oil outlet pipeline is arranged at the bottom of the lubricating oil tank, and the lubricating oil tank is communicated with the flow control module through the pipeline. According to the utility model, plunger wear or equipment failure caused by insufficient lubricating oil can be avoided, and continuous and stable operation of the lubricating device is ensured.

The utility model discloses a one-way valve for a plunger pump, and relates to the technical field of one-way valves, the one-way valve for the plunger pump comprises a valve body, the inside of one end of the valve body is in threaded connection with an adjusting ring, and a pull rod is arranged inside the adjusting ring; the end, away from the adjusting ring, of the pull rod is connected with a valve element. The adjusting ring is arranged in a T shape, the protruding end of the adjusting ring is sleeved with a spring, and the spring is further sleeved with the outer side of the pull rod. The other end of the pull rod is in threaded connection with the valve core; a through hole is formed in the valve core; and one side of the valve body is in threaded connection with an oil outlet nozzle. According to the utility model, when the pre-tightening force of the spring needs to be increased, only the force application part needs to be rotated, the adjusting ring rotates along with the force application part, and the protruding part of the adjusting ring extrudes the spring to increase the compression amount of the spring, so that the opening pressure of the valve core is improved, the valve core can still work stably in a high-pressure environment, leakage is effectively prevented, and the reliability and durability of a system are further enhanced.