58results about How to "Good working performance" patented technology

The invention relates to 3D printing mortar and a preparation method thereof and belongs to the field of building materials. The mortar is mainly composed of 70-90% of compound cement, 5-20% of quartz sand, 0.2-2% of lime, 1-5% of coagulant, 0-3% of water reducing agent, 0-3% of defoaming agent, 0-0.5% of thickener and 0.2-0.8% of fiber. The mortar can be quickly hardened and is good in thixotropy and flowability, initial setting time can be within 2 min at least, the requirement that the 3D printing mortar is quickly dried and hardened can be met, and later strength is high.

The invention belongs to the technical field of building materials, and particularly relates to high-strength concrete mixed with low-temperature rice husk ash, which comprises ordinary Portland cement, low-temperature rice husk ash, slag powder, coal powder ash, broken stones, river sand, water and water reducer. The low-temperature rice husk ash is prepared by burning rice husks at the lower temperature (600 DEG C) and grinding the burned rice husks. The specific surface area of nitrogen adsorption measurement of the high-strength concrete is 55-70m2 / g, and the high-strength concrete has ultrahigh pozzolanic activity. By means of the high-strength concrete, the problem of rice husk processing can be solved, and the production cost of the high-strength concrete can be reduced. The high-strength concrete has the advantages of high workability, high strength, rapidity in strength development, mechanical property, durability and the like by being prepared from the ordinary Portland cement serving as cementing materials, the low-temperature rice husk ash, the slag powder and the coal powder ash serving as admixture, and the broken stones and the river sand serving as aggregate and the high-efficiency water reducer. Reusability of the rice husks is effectively realized by the aid of the high-strength concrete so that energy saving, emission reduction and environmental protection are achieved. Besides, production cost of the high-strength concrete can be reduced, and economic returns are improved.

The invention belongs to inorganic non-metallic building materials, and particularly relates to a synchronous grouting material for shield tunnels and a preparation method of the synchronous grouting material. The synchronous grouting material disclosed by the invention comprises the following components in parts by weight (kg / m<3>): 250-350 parts of a cementing material, 0-60 parts of quick lime, 0-60 parts of periclase, 0-15 parts of phosphates, 1-2.8 parts of a high-efficiency water reducing agent, 0.5-2.6 parts of polymers, 850-1100 parts of shield tailings, and 205-475 parts of water. The synchronous grouting material prepared from the shield tailings is good in early strength, micro-expanding performance, working performance and water dispersion resistance. According to the synchronous grouting material disclosed by the invention, underground tailings brought out in the process of shield construction are reasonably used, thus the impact on the environment is reduced; the synchronous grouting material is simple in ingredients, low in manufacturing cost, easy to produce, and good in workability, and can satisfy the requirements of grouting equipment.

The invention discloses a battery material graphite grinding device, comprising a crushing device and a storage device; the crushing device is provided with a material inlet, a fastener, a first motor, a transporter, a casing, a second motor, a rotating shaft, and a blade , a screen, a vibrator, a grinding net, a third motor, a bump, a rotating shaft, a connecting rod, a pressure wheel and a conveyor belt; At the bottom right of the material inlet; the conveyor is vertically fixed at the center of the left end of the first motor; the second motor is fixed inside the casing; the rotating shaft is vertically fixed below the second motor central position; the raw material graphite of the present invention enters the crushing device from the feed port; the fastener controls the opening and closing of the feed port; the first motor drives the conveyor to make the raw material in the feed port enter the crushing device; the casing The second motor plays a protective role; the second motor drives the rotating shaft to rotate.

The invention provides CA (cement and asphalt) mortar for CRTS II slab ballastless tracks, aiming to ensure the CA mortar to have better working performance and compression and breaking strength. The invention is characterized in that the polycarboxylic acid water reducer with water reduction quantity toward CA mortar cement being 0.13-0.22% is mixed in emulsified asphalt in the emulsifying process and the melamine water reducer with water reduction quantity toward CA mortar cement being 0.21-0.22% is admixed in the process of blending the emulsified asphalt and mortar. The invention has the following beneficial effects: the dispersion degree and fluidity of the mortar have lower losses; the CA mortar has good working performance; and the compression and breaking strength of the CA mortar are effectively improved.

The invention discloses a full-automatic internal circulating gas drying device. A front oil removing filter is respectively connected with a first drying tower and a second drying tower through a first valve and a second valve; the first drying tower and the second drying tower are both filled with moisture absorbents; the first drying tower and the second drying tower are respectively connectedwith a rear dust removing filter through a seventh valve and an eighth valve; the rear dust removing filter is connected with a finished product gas output system; the first drying tower and the second drying tower are also respectively connected with a regeneration gas regulating valve through the seventh valve and the eighth valve; the regeneration gas regulating valve is connected with a pressure blower; the pressure blower is connected with an electric heater; the electric heater is respectively connected with the first drying tower and the second drying tower through a fifth valve and a sixth valve; the first drying tower and the second drying tower are respectively connected with a cooler through a third valve and a fourth valve; the cooler is connected with the inlet of the front oil removing filter or the first valve and the second valve; and the first drying tower and the second drying tower form a circulating operation form that one of the first drying tower and the second drying tower adsorbs and the other one regenerates. The full-automatic internal circulating gas drying device has a reasonable structure and is good in working performance.

The invention provides a channel allocation method and an interaction method in a large-bandwidth orthogonal frequency division multiplexing system. The channel allocation method comprises the following steps that: A, the system bandwidth is divided into a plurality of sub-bandwidths according to basic bandwidths; the size of each sub-bandwidth is equal to that of any basic bandwidth; each sub-bandwidth respectively has a set of synchronous channel SCH, broadcast channel BCH and random access channel RACH; and the basic bandwidth are a plurality of minimal bandwidths among the bandwidths supported by the system or a plurality of minimal bandwidths among terminal bandwidths which are accessed into the system and supported by the system; and B, one or more sub-bandwidth is correspondingly allocated to each terminal according to the terminal bandwidth and is used as an interactive channel of each terminal. The methods are compatible for the access of the terminals with various capabilities. The system can simultaneously ensure good working performance for controlling the channels with low expenses on SCH, BCH and RACH resources. The system has simple dispatch.

The invention relates to an interface agent for a high-speed railway ballastless track polyurethane caulking material and a preparation method thereof. The interface agent comprises the following raw materials in parts by weight: 100 parts of isocyanate prepolymers, 80-120 parts of solvents, 0.1-0.5 part of catalysts, 0.5-2.5 parts of water removal agents and 0.5-2.5 parts of anti-aging agents. The preparation method comprises the following two steps of: (1) slowly dripping polyhydric alcohol to isocyanate at the temperature of (85+ / -5) DEG C, then increasing the temperature to (90+ / -5) DEG C for continuous reaction, when the content of NCO groups is 14%-16%, adding organic silicon coupling agents, and reacting till the content of the NCO groups is 10%-12% so as to obtain a prepolymer; (2) adding the solvents, the catalysts, the water removal agents and the anti-aging agents to the prepolymer, uniformly stirring, and debubbling in vacuum (at vacuum degree less than or equal to -0.09MPa) to obtain the interface agent for the polyurethane caulking material. The interface agent disclosed by the invention has the characteristics of low viscosity, good impregnation property, high toughness, excellent hydrolysis-resistant property and alkali-resistant property, excellent adhesive property with concrete and the polyurethane caulking material, and the like.

The invention discloses a device for improving a current sampling linear range and electric energy measuring accuracy of an electric energy meter. The device comprises a switching switch and a control sampling resistor, wherein the switching switch is in secondary connection with a current transformer of the electric energy meter; the control sampling resistor is in the secondary connection with the current transformer of the electric energy meter and is used for controlling and sampling a secondary side current; the switching switch is connected with an adjustable sampling resistor; resistance of the adjustable sampling resistor is adjusted through change of a switching point of the switching switch; the adjustable sampling resistor is connected with a metering chip through a low-pass filtering circuit; the control sampling resistor is connected with a comparer; the comparer is connected with a microcontroller; one path output of the microcontroller is connected with the metering chip; and the other path output of a microprocessor is connected with the switching switch. The device is reasonable in structure and good in working performance, and capable of improving the current sampling linear range and the electric energy measuring accuracy of the electric energy meter.

The device evenly applying silicon oil to both sides of the band comprises machine frame with working cylinder, soaking compression roller, soaking carrying roller, silicon oil reservation slot, linear guide moving up and down under the working of oil cylinder for the soaking compression roller, with simple structure, fine working performance, simple maintenance.

The present invention provides a heat management system for controlling the temperature inside of an electronics cabinet. A first heat exchanger is provided that includes a cold plate that is thermally interconnected with the electronic systems and components in the cabinet. A channel is defined in the cold plate that supports a tube having an entrance opening, an exit opening, and is arranged in thermal communication with the electronic systems so as to form a passageway for a liquid coolant fluid to travel through the channel. A second heat exchanger is provided that includes a condenser arranged in fluid flow communication with the entrance opening and the exit opening of the channel and a plurality of fans arranged in confronting relation to the condenser. A third heat exchanger is provided that includes two stacks of substantially parallel plates arranged in two-plate assemblies. Each two-plate assembly has a closed end and an open end such that a closed end of one two-plate assembly is sandwiched between an open end of two adjacent two-plate assemblies. Two fans are provided, one fan arranged so as to blow air onto a portion of the electronics and another fan arranged so as to draw heated air away from the electronics and blow the heated air into the open ends of the two-plate assemblies and the other fan arranged to circulate air from outside the cabinet through the third heat exchanger. The present invention effectively controls the heat distribution of electronic equipment and assembly inside the electronics cabinet.

The invention discloses modified rubber particle impact-resistant abrasion-resistant ultrahigh-toughness concrete, which is prepared from the following main raw materials: cement, fly ash micro-beads,silica fume, machine-made sand, modified rubber particles, hybrid fibers, an interface enhancer, a composite expanding agent, a shrinkage-reducing viscosity-reducing water reducing agent and water. According to the invention, the modified rubber particle impact-resistant abrasion-resistant ultrahigh-toughness concrete has advantages of excellent impact toughness, excellent corrosion resistance, good volume stability and high interface bonding strength of new and old concrete, can be widely applied to the field of construction, repair and reinforcement of hydraulic structures such as bridge piers and the like, can improve the bearing capacity and the service life of hydraulic structures such as the piers and the like, reduce the maintenance cost, achieve effective utilization of wastes andsolve the problems of shortage of quartz sand and river sand resources and the like in China, and has important economic and environmental benefits.

The invention provides a high-efficiency lithium battery material iron removal device, which includes a crushing cylinder and a conical collecting cylinder; the crushing cylinder is provided with a feeding port, a connecting column, a cover plate, a wheel column, a motor, a funnel bottom plate, and a ring mouth, material removal rod, transition box, screen, draw frame and feet; the feed inlet is set at the upper end of the crushing cylinder; there are two connecting columns, which are respectively vertically arranged on the left and right sides of the edge of the feed inlet ; The receiving cone is provided with rollers, electromagnetic boards, dust-proof boxes, drawer boxes, cross bars, rotating rods and scrapers; the receiving cone is docked at the lower end of the transition box and the two are connected; The feed port of the present invention is convenient for workers to put in battery materials; the cover plate is used to prevent the materials from splashing out during the process of crushing battery materials and accidentally injuring workers; the side wall of the wheel column interacts with the inner wall of the crushing cylinder during the rotation process, and the grinding crushed materials; the bottom plate of the funnel facilitates the collection of falling battery materials to the middle of the bottom of the wheel post for crushing.

The invention provides a garden fruit picking device convenient to operate and telescope and belongs to garden equipment. The garden fruit picking device comprises a thin rod and a thick rod and is characterized in that a handle is fixedly connected to the lower end of the thin rod; a first rotary shaft is horizontally fixedly connected to the right bottom end of the thin rod; a rotary disk is fixedly connected to the right end of the first rotary shaft; a rocker is horizontally fixedly connected to the upper end of the right side of the rotary disk; a first fixed pulley is arranged at the bottom end of the inner cavity of the thin rod; the thick rod sleeves the upper end of the thin rod; two slide grooves are symmetrically vertically arranged in two sides of the inner cavity of the thickrod, and two sides of the upper end of the thin rod are clamped into the slide grooves; a screw is horizontally arranged on the lower portion of the left side of the thick rod; a friction block is fixedly connected to the right end of the screw inside the thick rod; a rotary block is fixedly connected to the left end of the screw; a vertical rod is vertically fixedly connected to the center of theupper end of the thick rod. The garden fruit picking device has the advantages that the thin rod can be conveniently operated through the handle; a user holds the rocker to rotate the rotary disk soas to drive the first rotary shaft to rotate; fruits can be conveniently stored in a net bag; a fixed blade is immobilized; a movable blade rotates around a second rotary shaft.

The invention provides a home outdoor energy-saving massage chair, and belongs to household equipment. The home outdoor energy-saving massage chair comprises a chair body, wherein the upper end of thechair body is horizontally provided with a sun shield plate, a solar panel covers the upper end of the sun shield plate, the left side of a placement plate is fixedly connected to a first rotation shaft, the first rotation shaft is fixedly connected to a movement rod, the center position of the right end of the movement rod is fixedly connected to a snapping block, a thick rod is connected to theupper end of the movement rod in a sleeved manner, the left side and the right side of the chair body are symmetrically provided with two armrests, the center position of the right end of the armreston the right side is fixedly connected to a cup placing position, a storage battery is arranged above the inner-right portion of the chair body, the lower end of the storage battery is horizontally provided with a horizontal rod, and the right end of the horizontal rod is fixedly connected to a treadling plate. According to the present invention, the solar energy can be converted into the electric energy by the solar panel; the lighting lamp is used for lighting at night; the placement plate is used for placing articles; the movement rod rotates around the first rotation shaft; the thick rodrotates around the movement rod; and the vertical rod and the horizontal rod rotate around the second rotation shaft.

The invention provides a primary-secondary ejector and relates to a fluid mixing element for fluids. A central ejector of the primary-secondary ejector is coaxially arranged in an annular ejector; outlets of the central ejector and the annular ejector are communicated with a main mixing chamber and a main mixing tube; one part of a main fluid is ejected from the top of the central ejector to an inlet of a central mixing tube through a central nozzle, is utilized to inject a secondary fluid entering into a central mixing chamber from an inlet in a side position on the upper part of the annular ejector into the central mixing tube and is mixed with the secondary fluid; the other part of the main fluid is ejected from the top of the annular ejector to the inlet of an annular mixing tube through an annular nozzle, is utilized to inject the secondary fluid entering into an annular mixing chamber from the inlet in the side position on the upper part of the annular ejector into the annular mixing tube and is mixed with the secondary fluid; and an ejected fluid at the outlet of the central mixing tube in the main mixing chamber is utilized to inject the surrounding ejected fluid at the outlet of the annular mixing tube into the main mixing tube and is mixed for the third time, thereby finishing the mixed fluid conveying in a way that the high-pressure main fluid pumps the low-pressure secondary fluid. The primary-secondary ejector is short in axial size and high in pumping and ejecting efficiency.

A method of preparing components of railroad engineering machine-made sand pump concrete is disclosed. The novel method of preparing the railroad engineering machine-made sand pump concrete is provided from the point of view of an optimal equivalent fine-grain volume. The railroad engineering machine-made sand pump concrete with good comprehensive performances can be prepared by the method no matter how raw material variety, grades and producing factories change, thus avoiding a practical problem that a mixing ratio needs repeated testing and repeated verification when raw materials change in engineering, making up disadvantages of preparing methods at present, and creating a railroad engineering machine-made sand pump concrete preparing technique which is more scientific, more reasonable and stabler.

A force measuring system for exercise equipment provided for using in an exercise equipment, the system includes a measured body, a force sensor, a circuit board; a Wheatstone bridge, a data transmission module and a power module disposed on the circuit board; and a receiving device. The power module provides a working power supply. The measured body is connected to the exercise equipment. The force sensor is disposed on the measured body, and the resistance value thereof changes along with a deformation amount of the measured body. The Wheatstone bridge is electrically connected to the force sensor to output a measurement signal. The data transmission module transmits a force taken information to the receiving device, wherein the force taken information is obtained according to the measurement signal.

The invention discloses a pressure wireless dynamic monitoring device for an artificial trachea cuff. A pressure sensor transmits pressure information to an analog-to-digital converter, the analog-to-digital converter is connected with a microprocessor, the microprocessor is connected with a bedside node wireless communication module, the bedside node wireless communication module is communicated with a network coordinator via a wireless network router, the network coordinator is connected with a nurse station computer, the bedside node wireless communication module takes charge of coordinating wireless communication of the network router and transmits the trachea pressure information and bedside number information data to the nurse station monitoring computer, and the network coordinator further has functions of a gateway. On the one hand, the pressure wireless dynamic monitoring device is communicated with bedside nodes via the network router, and on the other hand, the pressure wireless dynamic monitoring device is connected with the nurse station computer, carries out commands of the computer and responds correspondingly. The pressure wireless dynamic monitoring device is reasonable in structure and fine in work performance.

The invention discloses a device and a method for measuring deformation of hydrate in a supergravity autoclave based on image features. A kettle cover is arranged at the top of the high-pressure kettle, the high-pressure kettle is arranged in a supergravity environment, a hydrate simulation reservoir and high-pressure water are arranged in the high-pressure kettle, a square metal sheet is arranged on the hydrate simulation reservoir, a base is covered with a hemispherical tempered glass cover and fixed to the bottom surface of the kettle cover, and a high-speed camera, an annular LED lamp tube and an air pressure sensor are arranged in the hemispherical tempered glass cover; the experimental device is separated from a high-pressure water body by using the hemispherical tempered glass cover, and the number of pixels occupied by the square metal sheet in the view of a picture is calculated to calculate the distance between the square metal sheet and the high-speed camera, so that the hydrate simulation reservoir surface deformation is obtained. The device is simple, convenient and rapid to operate, reliable and accurate in test result and capable of working in low-temperature, high-pressure and high-gravity field environments, the deformation problem of the hydrate reservoir surface is measured and calculated, and a scientific basis is provided for researching and exploiting the surface deformation problem caused by natural gas hydrates in seabed reservoirs.

The invention relates to a dynamic phase modulation device used in a terahertz waveband, and particularly relates to a terahertz dynamic phase modulator based on a microstructure. The terahertz dynamic phase modulator is dynamic and continuously adjustable in phase, and belongs to the technical field of electromagnetic functional devices. According to the invention, the microstructure provided with an HEMT is combined with a microstrip line, and a feed metal block of the microstructure is used for inputting a modulation signal, so that the carrier concentration of the HEMT (High Electron Mobility Transistor) is changed to realize the on-off of the microstructure, and the phase modulation of terahertz waves is realized. According to the invention, the insertion loss is lower than 1.87dB while accurate small-phase dynamic modulation is realized, good working performance is ensured while the phase is dynamically modulated, and the modulation speed is high; the structure is simple, the processing technology is mature, and the manufacturing is convenient; and secondly, the phase modulator is convenient to use, can work in a normal-temperature and normal-pressure environment, and has good application potential and prospect.

The invention provides an error correction control system for a sludge plunger pump and a working method thereof. The system comprises a first oil cylinder, a second oil cylinder, a third oil cylinderand a main sludge discharge port, each oil cylinder is provided with a ceramic plunger pump, each oil cylinder is provided with a power source by a hydraulic system, and the control system comprisesthe hydraulic system, a PLC, a man-machine interaction interface, a plurality of displacement sensors and a plurality of pressure transmitters, wherein the man-machine interaction interface, the displacement sensors and the pressure transmitters are in communication connection with the PLC. The error correction control system is obtained by overcoming the defects of similar sludge treatment systems such as an existing urban sludge treatment system, by additionally arranging the hydraulic control system on the basis of an existing mechanical sludge plunger pump, equipment repair and maintenanceare quite convenient, and a whole machine has excellent working performance and a long service life and can stably work for a long time in the environment where sludge is used as a working medium.

The invention discloses an air conditioner and a control method of the air conditioner. The air conditioner comprises a controller, a compressor, an outdoor unit shell, an air outlet grille and a driving device. The controller controls the air conditioner to run, and the controller comprises a control switch; the compressor is connected with the controller; an air outlet is formed in the outdoor unit shell; the air outlet grille is arranged on the air outlet; the driving device is arranged to be used for driving the air outlet grille so as to open and close the air outlet and is connected with the controller; and after the control switch is triggered, the driving device drives the air outlet grille so as to open the air outlet before the compressor runs, and after the control switch is turned off, the driving device drives the air outlet grille so as to close the air outlet after the compressor is shut down. According to the air conditioner, before the compressor runs, the air outlet is opened, and after the compressor is shut down, the air outlet is closed; an external foreign body is prevented from entering the interior of the air conditioner, and the air conditioner is prevented from being damaged; and meanwhile, when the air conditioner runs, normal air outlet is achieved, and the running state is not affected.

The present invention provides a domestic photovoltaic power generation system device. The device comprises a generation device and a conversion device. The generation device is provided with a fixed flat plate, connection blocks, a solar panel, an extendable stick, a fixed bolt, a fixed block, a reflector, a hold down groove and a rotating plate. The fixed flat plate is arranged on a roof; there are four connection blocks which are respectively arranged at four distal corners of the fixed flat plate; the conversion device is provided with a wall body, an inverter, a lead, a fixed transverse slat and output holes; the inverter is embedded in the wall body; the lead is connected with the solar panel and the inverter; there are many output holes which are uniformly distributed at the lower side of the front end face of the inverter; the fixed flat plate is configured to fix the generation device on the roof; the connection blocks are convenient for users to use blots to fasten the fixed flat plate on the roof; and the solar panel rotates according to the angle of the surface of the roof to reach the longest illumination time so as to convert more solar energy to electric energy and facilitate home use.

The invention discloses an automatic descaling control system of an electric heating steam generator, which includes a PLC controller, wherein the PLC controller is connected with a switch device for controlling the starting / stopping of the PLC controller; one output stage of the PLC controller is connected with a power supply relay for controlling the steam generator to operate; another output stage of the PLC controller is connected with a detergent control valve for controlling the feeding amount of the detergent into the steam generator; and another output stage of the PLC controller is connected with a blowdown electromagnetic valve for controlling the blowdown of the steam generator. The automatic descaling control system has reasonable structure and excellent working performance, and can realize automatic descaling.

The invention discloses a graphite crushing and demagnetization device for battery materials, comprising a crushing device and a demagnetization device; the crushing device is provided with a material inlet, a fastener, a motor, a rotating shaft, a blade, a controller, a transparent block, a bottom plate, Thick plate, thin plate, feeder and feeding pipe; the feed port is fixed at the upper left position of the crushing device; the fastener is fixed at the position directly below the feed port; the motor is fixed at the The right side of the crushing device; the rotating shaft is fixed vertically at the left center of the motor; several blades are evenly fixed on the rotating shaft; the controller is fixed on the left side of the rotating shaft, outside the crushing device; The raw material of the present invention enters the crushing device from the feed port; the motor drives the rotating shaft to rotate; the rotating shaft drives the blade to crush the raw graphite; the user observes the internal conditions of the crushing device through the transparent block; Inside the panel, the thin panels extend to close the bottom panel and retract to open the bottom panel.

The invention discloses a substation weeding robot, comprising an ultrasonic sensor, a signal conditioning module, a control device, a memory module, a cart, a cutter and a recycling device. The ultrasonic sensor is connected with the control device through the signal conditioning module; the memory module, the cutter and the recycling device are connected to the control device; the control deviceis connected with the cart. The position of the cart is adjusted according to weeding completion degree stored in the memory module; weed height is detected through the ultrasonic sensor; the weed height is compared with a set action value through the control device; if weeds are too tall, the cutter is controlled through the control device to cut the weeds, and the weeds are collected to the recycling device. The substation weeding robot has good operating performance.

The invention discloses an ammonia flue gas mixing apparatus used in a stern exhaust gas processing system. The apparatus comprises an evaporator connected to an ammonia storing tank. The evaporator is connected to an ammonia gas buffering tank. The ammonia gas buffering tank communicates with a demister arranged between a flue gas outlet of a desulphurization apparatus and a gas-gas heat exchanger. The demister is connected to a cold end inlet of the gas-gas heat exchanger through a pipeline. The cold end inlet of the gas-gas heat exchanger is connected to an SCR denitrification apparatus, wherein non-uniform coefficient Cvucata of flue gas velocity on a first layer catalyst inlet interface in the SCR denitrification apparatus is smaller than 15%, the ammonia-nitrogen ratio non-uniform coefficient Cvrcata is smaller than 5%, the temperature difference is smaller than +-10K, and the temperature difference at the catalyst inlet interface in front of the SCR denitrification apparatus inlet is smaller than +-1K. The apparatus provided by the invention is characterized in reasonable structure, good working performance and low pollution.

The invention discloses high-fluidity neutron-radiation-resistant concrete and a preparation method thereof. The concrete comprises mixing water, a cementing material, serpentine fine aggregate, serpentine coarse aggregate and a polycarboxylate-type water reducer, and the cementing material is prepared from cement, metakaolin and coal ash microbeads; the mass of the above components is as follows:the the mass of the mixing water is 188-210 parts, the mass of the cement is 425-475 parts, the mass of the metakaolin is 25 parts, the mass of the coal ash microbeads is 50 parts, the mass of the serpentine fine aggregate is 6-70 parts, the mass of the serpentine coarse aggregate is 930-960 parts, and the mass of the polycarboxylate-type water reducer is 1.0-1.2% of that of the cementing material. The hydrogen content of the crystal water in the finished concrete is not less than 1.4% of the mass of the dried concrete, the strength is not less than 30 MPa, and the slump is greater than 200 mm. The high-fluidity neutron-radiation-resistant concrete has the characteristics of high crystal water content, good concrete working performance and convenience in construction, and the concrete prepared by the invention has high practicability and can be popularized and applied to nuclear radiation shielding construction on a large scale.