64results about How to "Facilitate project promotion" patented technology

The invention discloses an antenna phase center calibration system based on site insertion loss measurement, which comprises an open site, a reference antenna, an antenna phase center calibration processor, a GPIB (General Purpose Interface Bus) card, a vector network analyzer and an antenna lifting component. When a to-be-measured antenna is subjected to phase center calibration, site insertion loss between the to-be-measured antenna and the reference antenna under the antenna heights is used twice, and an offset of an antenna phase center of the to-be-measured antenna relative to a reference point is acquired by a reflection wave path-reflection coefficient invariant strategy and an antenna phase center mean convergence criterion. The system aims at providing a calibration method for an open site antenna phase center. According to the system and the method, the antenna with the precise and known antenna phase center serves as the reference antenna, so that phase center calibration of the to-be-measured antenna is achieved; a phase center calibration mode depending on the reference antenna facilitates quantity value transmission of an antenna phase center parameter; and quantity value unification of the antenna parameter is achieved.

The invention discloses a variable working condition planetary gearbox sun gear fault diagnosis method based on a multi-attribute convolutional neural network, and belongs to the technical field of mechanical fault diagnosis. The method comprises the steps of firstly acquiring vibration data of a planetary gearbox of a planetary gearbox sun gear under different fault types, different rotation speeds and different loading working conditions, multiple sample points are created from the vibration data, corresponding multi-attribute labels are endowed with, the multi-attribute convolutional neural network is built and trained, during a test, the multiple data sample points are created from the vibration data of the planetary gearbox to be diagnosed, the trained multi-attribute convolutional neural network is utilized to diagnose test sample points, and variable working condition planetary gearbox sun gear fault diagnosis is completed. The variable working condition planetary gearbox sun gear fault diagnosis method based on the multi-attribute convolutional neural network can automatically extract characteristics and is high in accuracy and high in generalization performance, the method is simple and easy to understand, fault diagnosis under variable conditions can be achieved, the rotation speeds can be predicated simultaneously, and the method is simple in engineering popularization.

The invention provides an iron and steel complex comprehensive wastewater treatment device and process. The device comprises a coagulation unit, a biochemical treatment unit, a filter unit and an ozone catalytic oxidation unit. The biochemical treatment unit comprises a nitrification biofilter and a denitrification biofilter. The coagulation unit, the denitrification biofilter, the nitrification biofilter, the filter unit and the ozone catalytic oxidation unit are connected in order; or, the coagulation unit, the ozone catalytic oxidation unit, the denitrification biofilter, the nitrification biofilter and the filter unit are connected in order; or, the coagulation unit, the nitrification biofilter, the denitrification biofilter, the filter unit and the ozone catalytic oxidation unit are connected in order. The device can remove COD and ammonia nitrogen from wastewater synchronously at low cost, has the advantages of high treatment efficiency, good stability, strong impact resistance ability and simple operation, can flexibly selects the connection form of the treatment units according to the water quality condition, can realize the whole course flow by gravity, lowers energy consumption, and is conducive to project promotion.

The invention relates to an anti-interference PID (proportion integration differentiation) controller for an industrial unstable time-lag process and a design method thereof. The controller consists of a set value tracking controller, a disturbance resisting controller, a filter, a controlled process identifying model and three signal mixers. The design method of the anti-interference PID controller for the industrial unstable time-lag process provided by the invention can improve the anti-interference capability of a system to a great extent, and compared with the other design methods, the control system is simple in structure, the controller is standard in form, industrial realization is easy, respective performance is adjusted through one-parameter, the operation is convenient and visual, the controlling effect is stable, and better system performance can be realized. The industrial control system can be widely used for controlling the production process of various enterprises in the industries, such as energy, metallurgy, petrifaction, light industry, medicine and textile manufacturing.

The invention discloses a rotating machinery fault qualitative diagnosis method based on a convolutional neural network, belonging to the technical field of machinery fault diagnosis. The diagnosis method comprises the steps of extracting enough sample points from rotating machinery vibration data, building a convolutional neural network model, training the convolutional neural network model, randomly intercepting multiple sample points in a test, classifying the test sample points by using the trained convolutional neural network, and completing the qualitative diagnosis of a rotating machinery fault. The artificial extraction of features is needed in a traditional fault qualitative diagnosis method, the accuracy is low, the generalization performance is poor, the method is complex and difficult to understand, and the engineering popularization of the method is difficult. According to the rotating machinery fault qualitative diagnosis method based on the convolutional neural network, the features can be automatically extracted, the accuracy is high, the generalization performance is high, the method is simple and is easy to understand, and the engineering popularization of the method is easy.

The invention discloses amorphous high-entropy solder alloy for brazing tantalum Ta1 and 1Cr18Ni9 stainless steel and a preparation method thereof. The amorphous high-entropy solder alloy is preparedfrom the following components in mole percentage: 7.0-9.0% of Cr, 5.0-8.0% of Si, 5.0-7.0% of Fe, 6.0-8.0% of Zr, 2.0-3.0% of Ta, 2.5-4.5% of B and the rest Ni. The preparation method comprises the steps: respectively melting and preparing Ni40Cr10Ta and Zr20Cr20Ta intermediate alloy by a vacuum arc furnace, then putting the two kinds of intermediate alloy and the rest of Ni, Fe, Si, B, etc in a crucible; melting and preparing master solder alloy in the vacuum arc furnace; conducting rapidly quenched solidification for master alloy melt, and thus obtaining amorphous high-entropy solder alloy foil. The melting point of the amorphous high-entropy solder alloy is between 980-1050, the brazing temperature is lower than the grain coarsening temperature of steel, and the performance of a brazingjoint is high. The solder alloy has good flexibility and is conveniently processed and assembled. During welding, the wettability of the solder alloy with tantalum and steel is good, and the corrosion resistance of a brazing seam is good. The mechanical property of the joint is good.

The invention belongs to the field of electric power control and particularly relates to a probability model establishing and value solving method of a dispersed modulation strategy of an air conditioner load group. When power vacancy occurs in an electric power system, and the frequency is continuously decreased, a load dispersed control strategy for linearly changing the set temperature of the air conditioners is applied to the air conditioners according to the size of frequency deviation. When the frequency is decreased to the lowest value, the set temperature of the air conditioner will not return back along with the reducing of the frequency deviation, and is kept unchanged at the delta T. When the control time reaches delta tc, the control is finished, and each air conditioner adjust own operation states according to a self-discipline controlled basic mechanism. According to the invention, the dispersed self-discipline control of the air conditioner load cluster response frequency is controlled in a control initial stage; power requirements on the air conditioner cluster response frequency are reduced, power vacancy of the system is filled and amplitude of the frequency reduction is reduced; through the self-discipline control after the control is finished and the air conditioner power returning based on period dividing method, power oscillation and secondary impact can be eliminated, so additional damage to operation of the system can be avoided.

The invention discloses a mixture for cement-stabilized bases, and particularly relates to an anti-cracking mixture for cement-stabilized bases of roads in alpine high-altitude regions, which consists of the following components in percentage by weight: 75 to 85 percent of aggregate, 5 to 10 percent of natural sand, 3 to 6 percent of cement, 5 to 10 percent of anhydrous sodium sulphate and 1.5 to 4 percent of aluminum sulfate; and the aggregate is characterized in that the aggregate crushing value is not greater than 28 percent, the flat and elongated particle content is not higher than 15 percent, and the plasticity index of the aggregate less than 0.6mm is less than 4 percent. The mixture for cement-stabilized bases which is disclosed by the invention is designed according to the alpine high-altitude characteristics, the average temperature shrinkage coefficient and the average dry shrinkage coefficient are effectively decreased, moreover, the requirement on the compressive strength, splitting strength and fatigue properties of the mixture can be met, the mixture can help to prevent the problem of the cracking of cement-stabilized bases in alpine high-altitude regions, the effect of reducing the number of reflection cracks of pavements in alpine high-altitude regions is remarkable, and the mixture is applicable to the construction of road bases in the Tibetan plateau region of China.

The invention discloses a method for calculating mechanical parameters of landslide sliding surfaces based on field direct shear tests, and relates to field direct shear test techniques in the field of mechanics. The present invention mainly comprises the following steps: 1. carry out the on-the-spot direct shear test of relevant landslide sliding surface under natural condition or saturated condition, draw the relationship curve of shear stress and deformation; 2. obtain a hyperstatic equation group; 3. establish about An objective function based on the least square criterion of cohesion and internal friction angle; ④Introduce the particle swarm optimization algorithm into the objective function, and the obtained cohesion and internal friction angle values ​​are the mechanical parameter values ​​of the sliding surface. The invention can not only effectively reduce the influence of abnormal values ​​in the test, improve the speed and accuracy of determining landslide mechanical parameters, but also has a simple principle and calculation method, which is beneficial to engineering promotion; it is suitable for highways, railways, mines, reservoir areas, etc. Solving landslide parameters in many projects and related fields.

The invention relates to a shape memory alloy reinforced wood structure beam column bolt joint. Wood components are rectangular, and the length direction of the wood components is the wood grain texture direction; a reinforcing part of a first wood component is located at an end, and a reinforcing part of a second wood component is located at an abdomen position. The reinforcing parts are formed through the following operation: at least one steel filling plate groove parallel to the length direction is formed in the middle of each wood components in the thickness direction, a plurality of boltholes are pre-drilled in the corresponding positions of the wood components and steel filling plates in the thickness direction, the steel filling plates are inserted into the steel filling plate grooves, and all bolts are inserted into the corresponding bolt holes; a plurality of bar holes are pre-drilled in the wood components in the height direction of the sections, the positions of the bar holes do not interfere with the bolt holes, and all memory alloy bars are inserted into the corresponding bar holes; and the first wood component and the second wood component are vertically connected through the respective reinforcing parts. According to the invention, the wood cross grain splitting damage of a bolt joint area is effectively prevented, the development of unrecoverable deformation in the wood cross grain direction of the joint area can be remarkably reduced, and the self-resetting performance of the joint is improved.

The invention relates to a method for preparing polyferric chloride by using wastewater produced in pickling of steel with hydrochloric acid. The method comprises the following steps: pretreating hydrochloric acid pickling wastewater, and quantitatively feeding the filtered hydrochloric acid pickling wastewater into a reaction kettle; adding a phosphate buffer in batches, wherein 0.03 to 0.04 tonof the phosphate buffer is added for per ton of the concentrated hydrochloric acid pickling wastewater; carrying out sufficient stirring to completely dissolve the phosphate buffer; and adding an oxidizing agent under the conditions of stirring and constant-temperature heating for an oxidative polymerization reaction, wherein the concentration of the oxidizing agent is 120-150 mg / L, 0.7 to 1.1 kg / h of the oxidizing agent is added for per ton of the concentrated hydrochloric acid pickling wastewater, the rotating speed of an agitator in a reaction vessel is 200 to 400 rpm, a reaction temperature is 40 to 60 DEG C, and after sufficient reaction for 14 to 26 h, the polyferric chloride is obtained. The method has the following advantages: process flow is simple; only one reaction kettle is needed in a core production procedure; and the oxidative polymerization reaction is implemented in the reaction kettle.

The invention provides a device and method for measuring hulking coefficient, and measuring method of water absorption. The hulking coefficient measuring device comprises a first container, a second container connected with the first container, a pressurizing component arranged in the first container, and a power component for driving the pressurizing component to act on the first container and to adjust the pressure of the first container and the second container. The device and the method for measuring hulking coefficient has the following advantages: simple principle, simple calculation, easy operation, fast measurement, low cost, convenience for engineering application, combination with the engineering practice, effective reduction of cost, improvement of the production efficiency and safety; and the device and the method provide reliable data for roadway supporting and underground mining and has great practical value and social economic benefit.

The invention discloses a regulation method for high-dryness dehydration of sludge. The method comprises the following steps: sludge in a sludge digestion tank is conveyed to a sludge regulation pool through the gravity action or by a conveying pump, then a ferric chloride solution and quick lime are added into the regulation pool by virtue of a chemicals feeding pump, a mixer is used for mixing through sensing the liquid level, and sludge is fed into a plate and frame filter press from the regulation pool after the regulation is over. The method is a regulation method, based on which sludge and conditioners are mixed uniformly and the sludge mechanical dehydration performance is remarkably improved.

The invention discloses a steel-rubber concrete combined bridge beam slab, which comprises an upper prefabricated slab and a lower I-shaped steel girder, the upper prefabricated slab is prepared by mixing concrete and rubber powder, and the upper prefabricated slab There is an inwardly sunken longitudinal rib-shaped groove at the bottom; a threaded steel plate is welded on the top of the lower I-shaped steel beam, and the longitudinal rib-shaped groove fits with the threaded steel plate, and the Rubber concrete grout is poured into the space between the above-mentioned longitudinal rib-shaped groove and the threaded steel plate. The invention not only does not need to provide shear connectors, effectively avoids the fatigue fracture of the connector itself, but also has a series of advantages such as fast and convenient construction, tight connection between concrete slab and steel beam, and reasonable section setting.

The invention provides an intelligent bearing based on a Hall displacement sensor, belongs to the technical field of bearings and aims at solving the problem that the accuracy of bearing signals of an existing intelligent bearing is affected due to the fact that interference signals of peripheral structural parts are involved.The intelligent bearing mainly consists of a mandrel, a bearing end cap, a rolling bearing, a bearing seat, a side-hung measuring ferrule and four Hall probes, wherein the side-hung measuring ferrule, the rolling bearing and the bearing end cap are sequentially and coaxially arranged on the bearing seat from inside to outside, the four Hall probes are evenly distributed on a circular ring of the side-hung measuring ferrule and located at the internal middle position of the circular ring, and the rolling bearing and the side-hung measuring ferrule are arranged on an outer ring of the mandrel.The intelligent bearing integrates non-contact vibration measurement with an intelligent bearing technology, obtains a relative displacement signal of the bearing, isolates the interference signals from the peripheral structural parts of the bearing and improves the signal quality, and engineering application popularization of the intelligent bearing can be easier to achieve compared with existing embedded intelligent bearings.

The invention discloses a high-heat-conductivity ground temperature energy heat exchange tunnel system. The system comprises a tunnel second lining located on the upper portion and a tunnel inverted arch located on the lower portion, wherein the tunnel second lining and the tunnel inverted arch cooperate with each other. A patch type prefabricated geotechnical cloth bag heat exchange layer is paved on the upper surface of the tunnel inverted arch and comprises a geotechnical cloth bag, a heat exchange pipe and high-heat-conductivity filler, wherein the heat exchange pipe and the high-heat-conductivity filler are located in the geotechnical cloth bag. A lower waterproof layer is paved on the patch type prefabricated geotechnical cloth bag heat exchange layer. A phase change energy storage layer is arranged on the lower waterproof layer in a filling manner. A spread-out face is formed on the upper surface of the phase change energy storage layer. An upper waterproof layer is paved on theupper portion of the spread-out face. A heat insulation layer is arranged on the upper waterproof layer. A pavement layer located in the middle and a water pipe trench located on the side are arranged on the upper portion of the heat insulation layer. A water supply pipe and a water return pipe are arranged in the water pipe trench. The water supply pipe communicates with a water inlet of the heat exchange pipe, and the water return pipe communicates with a water outlet of the heat exchange pipe. The system has the advantages of being simple in operation, high in engineering applicability andlow in heat storage heat response.

The invention discloses a high- entropy alloy welding wire for welding a titanium-steel composite board. The high-entropy alloy welding wire consists of the following components by atomic percent: 8 to 12 percent of Ti, 15 to 18 percent of Fe, 30 to 33 percent of Be, 20 to 24 percent of Ni, 20 to 24 percent of Cu, and the total percentage is 100 percent. The invention also disclosese a method for welding the titanium-steel composite board by utilizing the high-entropy alloy welding wire. The high-entropy alloy welding wire has excellent strength, flexibility and corrosion resistance, an embrittlement intermetallic compound is unlikely to form, a welding structural steel base layer of the titanium and steel composite board with high performance is easy to obtain, a composite layer stripping procedure for the composite board is not needed, and the preweld treatment is greatly simplified; and the welding of a steel base layer and a titanium composite layer of the titanium-steel composite board can be completed in one step by adopting TIG weld. No crack exists in a weld seam transitional area; and the tensile strength of the welding head is high.

The invention discloses an anti-cracking low-heat-transfer enhanced vertical blocking barrier material as well as a preparation method and application thereof. The enhanced vertical barrier wall material is composed of in-situ soil, polymer modified bentonite and an additive. The polymer is selected from polyanionic cellulose or xanthan gum. The additive comprises the following main components: acementing material (granulated blast furnace slag and fly ash), an alkali activator (active magnesium oxide and cement) and a reinforcing agent (basalt fiber and biochar). Compared with a traditionalbarrier material, the enhanced vertical barrier wall material has the following characteristics that: the enhanced vertical barrier wall material has a stronger adsorption characteristic on heavy metal-organic matter combined pollution soluble substances; the adsorption capacity of the enhanced vertical barrier wall material is improved by 10-30%; the water-retaining property of the enhanced vertical barrier wall material is improved by 10-20%; the permeability coefficient of the enhanced vertical barrier wall material can still be kept smaller than 1*10 <-9> m / s under the action of a combinedpollution solution; the enhanced vertical barrier wall material has low heat transfer performance; and the enhanced vertical barrier wall material is suitable for being combined with other repair technologies.

The invention relates to an automated gear case fault diagnosis method based on a neural network and a characteristic frequency band. Gear fault diagnosis comprises: S1, collecting a vibration acceleration signal of a sample gear case, and constructing a signal library; S2, performing Fourier transformation on the vibration acceleration signal to obtain a corresponding amplitude spectrum; S3, extracting several groups of frequency band samples from the amplitude spectrum, marking a gear status label of each sample, and building a gear fault frequency band library; S4, training a gear fault diagnosis neural network by using the gear fault frequency band library; S5, extracting an amplitude spectrum characteristic frequency band of a gear in a to-be-diagnosed gear case; and S6, inputting theamplitude spectrum characteristic frequency band to the gear fault diagnosis neural network to diagnose a fault probability of the gear. According to the method, an amplitude spectrum of a gear casevibration signal on a characteristic frequency band is used as a characteristic signal to separately estimate a fault status of a gear, so that a current fault can be efficiently and automatically diagnosed, persons of ordinary skill are guided to repair and maintain the gear case in time, and working efficiency is obviously improved.

The invention provides a wood pin half-tenon joint reinforced by self-tapping screws. The wood pin half-tenon joint reinforced by the self-tapping screws comprises a first wood member with a mortise opening and a second wood member with a tenon; a group of rift grain self-tapping screws are arranged in the axial direction of the tenon on the second wood member in the rift grain direction in a drilling mode, and a group of cross grain self-tapping screws are arranged at the positions, in the cross grain direction, perpendicular to the axial direction of the tenon in a drilling mode; a group ofcross grain self-tapping screws are arranged at the positions, located on the two sides of the mortise opening in the cross grain direction, on the first wood member in a drilling mode; and a corresponding pre-drilling hole is perpendicularly formed in the corresponding position of the tenon and the mortise opening, and a wood pin is inserted into the pre-drilling hole. The wood pin half-tenon joint reinforced by the self-tapping screws has enough initial rigidity, flexural bearing capacity and deformation capacity, prevents the tenon from being broken and damaged and wood cross grain from being split off and damaged, and the stress capacity of the joint is improved.

The invention relates to a high temperature and high pressure on-site treating device for medical solid wastes, which comprises a high temperature and high pressure reactor, a steam generator, and a complete machine power source which are all connected with a system control cabinet. The steam generator is communicated with the high temperature and high pressure reactor, the high temperature and high pressure reactor is connected with a vacuum-pumping system and an exhaust and clarification system, and the vacuum-pumping system and the exhaust and clarification system are both connected with the system control cabinet to realize the vacuum pumping, exhaust and clarification inside the high temperature and high pressure reactor. The invention adopts a physical method for treatment, so toxicand harmful substances, such as acid gases, heavy metal, Dioxin, fly ash, and the like, cannot be generated. The high temperature and high pressure on-site treating device for medical solid wastes has the advantages of small floor area of the treating site, easiness in operation, safety, and low device cost, and is easy to popularize.

The invention discloses a wheeled robot data-driven iterative learning control method under DOS attacks. The wheeled robot data-driven iterative learning control method comprises three steps of constructing a bottom layer data model, designing a kinematics controller and setting an event triggering mechanism. On the premise of ensuring the expected stability performance, the updating times of the controller are reduced, and bandwidth resources are saved; meanwhile, the controller is designed only by using I / O measurement data generated by the dynamical model without depending on specific parameters of the dynamical model, so that the difficulty in the aspect of model decoupling is reduced, and the method is suitable for WMR systems with different types of mechanical structures and is more beneficial to practical engineering popularization; in addition, the method can introduce an iteration domain to get rid of the constraint of an early convergence process under the condition of considering network malicious DOS attacks and introducing an event triggering mechanism, and achieves complete trajectory tracking of the wheeled mobile robot in the whole time domain, thereby greatly improving the stability and reliability of the operation of the wheeled robot.

The invention relates to a robustness design optimization method of a gas compressor blade based on data driving, which adopts a mean camber line superposition thickness distribution mode to construct the blade, and uses an NURBS curve to parameterize the mean camber line of the blade. A four-point three-order data-driven non-embedded polynomial chaos method is used for carrying out uncertainty quantization on sparse sampling data, and four blade configuration modes are obtained. Sampling a blade design space by using a Latin hypercube method, and training a Gaussian process regression model by using a sampling set in each blade configuration mode; and respectively obtaining a GPR agent model at each blade configuration mode. After training is finished, a multi-target optimization algorithm NSGA II is adopted, and optimization search is carried out with the statistical mean value and the standard deviation of the blade total pressure loss coefficient as targets; therefore, the robust compressor blade with better performance and greatly reduced sensitivity to input uncertainty is obtained.

The invention relates to an orthogonal glued wood board reinforced by a nanocomposite and a manufacture method thereof. The orthogonal glued wood board reinforced by the nanocomposite comprises firstboards, second boards and structure glue layers, wherein each first board is formed by performing soaking treatment on a wood through a nanocomposite solution and using ultrasonic waves for uniformlydispersing the nanocomposite into the microstructure of the wood, the first boards and the second boards are alternately overlapped and bonded through the structure glue layers, the top layer and thebottom layer are two layers of the second boards, and grain directions of each first board and each second board are perpendicular to each other. The orthogonal glued wood board reinforced by the nanocomposite fully uses a connection function of the nanocomposite on the microstructure of the wood, significantly improves roll shearing intensity and cross grain tensile strength of the wood, is simple in structure, convenient to construct and convenient to popularize to engineering, substantially improves bending strength and shearing resistance of a wood floor, and is beneficial to popularization of a wood building.

The invention especially relates to a method for removing insoluble quinoline particles on the surfaces of carbon microspheres, belonging to the technical field of coking. The method comprises the following steps: 1) subjecting pretreated carbon microspheres to size grading by using a grading system, and retaining the carbon microspheres with particle sizes in a range of 5 and 25 [mu]m; 2) puttingthe graded carbon microspheres into a muffle furnace, performing nitrogen displacement, and then carrying out heating to 150-180 DEG C at a heating rate of 10-15 DEG C / min; 3) introducing air into the muffle furnace, carrying out heating to350-380 DEG C at a heating rate of 5-8 DEG C / min so as to realize oxidation of carboxyl groups of terminal carbon chains in the insoluble quinoline particles,maintaining the temperature for 2 to 3.5 h, and then carrying out cooling to room temperature at a rate of 15 to 30 DEG C / min by injecting air or inert gas; and 4) grading the treated carbon microspheres by using a cyclone grader, wherein the recovery range of the cyclone grader is set to be 5 to 25 [mu]m, and the insoluble quinoline particles having lower particle sizes are discharged through a dust removal system. The method effectively improves the specific electric capacity and the initial charge and discharge efficiency of the carbon microspheres, and can be realized by using a heating furnace alone, which is beneficial for industrial promotion.

The invention discloses a phase change energy pile, a ground source heat pump heat exchange system and a manufacturing method. The phase change energy pile comprises a pile body, a reinforcing cage, aheat exchange tube, concrete and a plurality of steel balls, wherein the reinforcing cage, the heat exchange tube, the concrete and the plurality of steel balls are arranged in the pile body, the heat exchange tube is fixed to the inner side of the reinforcing cage, the concrete is filled in gaps among the pile body, the reinforcing cage and the heat exchange tube, the steel balls are uniformly distributed in the concrete, phase change materials are arranged in the steel balls in a sealing mode, and a heat exchange carrier is arranged in the heat exchange tube. According to the phase change energy pile, the ground source heat pump heat exchange system and the manufacturing method, in the heat exchange tube heat carrying fluid circulation process, more energy is absorbed by and stored in the phase change materials, and meanwhile the thermal conductivity of the pile body is improved by the steel balls, so that the heat exchange efficiency of the phase change energy pile is greatly improved, the temperature change inside the pile body is uniform, the temperature difference stress is reduced, and the service life of the phase change energy pile is prolonged; and steel ball packages are adopted as coarse aggregate for pile body pouring, so that the leakage of the phase change materials can be prevented, the rigidity of the pile body can be meanwhile ensured, and the bearing capacity requirement is met.