49results about How to "Solve the closing problem" patented technology

The invention discloses a system and a method for realizing a content delivery network (CDN) based on a software defined network (SDN). The method comprises the steps of adding a complete business logic function of the CDN into a SDN application layer; when an application unit receives a CDN application request, transmitting a resource requirement and a business orchestration request to an orchestration unit; performing business orchestration by the orchestration unit according to related information of the SDN, transmitting the reserved application of the required resource to a control unit for acquiring the required resource, and afterwards determining a content distributing / delivery path according to network load balance and router condition; establishing an L2 / L3 forwarding table according to an SDN control surface forwarding related strategy and transmitting the L2 / L3 forwarding table to a data forwarding unit; and performing related operation by the application unit according to a content distributing or media accessing request, and performing data forwarding by the data forwarding unit. The method and the system realize DCN based on the SDN and effectively settle the problems of CDN bearing network closeness, hardware specificity and management complexity. Furthermore the system and the method realize reasonable selection for resources, engines and paths required by the CDN.

The invention discloses a fault sealing evaluation method for extracting a static quality coefficient through well logging, and particularly relates to the field of oil and gas resource geological exploration and development evaluation. The evaluation method comprises the following steps: 1, carrying out spectrum attribute, wavelet attribute and integral attribute analysis on conventional loggingdata passing through a fault zone, and carrying out sensitive attribute parameter optimization at the same time; 2, combining the selected fault zone structure logging attribute parameters with parameters capable of representing the fracture development degree, and constructing fault zone structure division parameters; 3, representing a fault plugging correlation coefficient and a fault zone structure division parameter by using logging information of the research block to obtain a static quality coefficient S extracted by logging; and 4, obtaining a standard for judging the fault sealing performance of the research block based on the S coefficient extracted by the logging attribute. According to the method, the influence of the fault internal structure on the fault sealing performance isconsidered, the influence of the fault sealing performance is solved to a certain extent, and the method has practical significance for well logging evaluation reservoir and oil field development of complex fault block oil and gas fields.

The invention discloses a method and a system for realizing a content delivery network (CDN) based on a software defined network (SDN). The method comprises the steps of respectively adding an application function, a control function and a network entity resource of the CDN into an application layer, a control layer and a data forwarding layer of the SDN; when a CDN application request is received, generating resource requirement and service orchestration information by the application layer of the SDN according to the CDN application request, transmitting a reserving request of the resource required by the CDN application to the SDN control layer so that the SDN control layer allocates the resource required by the CDN application, and generating a data transmission content routing table according to network load balance and a path strategy, furthermore generating an L2 / L3 forwarding table, and transmitting to the data forwarding layer; and when the data forwarding layer of the SDN receives a content dispensing / delivery operation request, performing related operation of the CDN service according to the L2 / L3 forwarding table. According to the method and the system, the system function of the CDN is realized based on the SDN, thereby effectively settling bearing network closure, hardware dedication and management problem in the CDN, and realizing reasonable selection for CDN application network resource, engine and forwarding path.

The invention relates to the core module of a ticket vendor in track traffic and public venue, namely the delivery mechanism of a ticket selling module. The mechanism comprises a first delivery mechanism, a second delivery mechanism and a ticket issuing mechanism which are arranged on a backing board as well as a motor and a synchronous belt which are used for driving the first delivery mechanism, the second delivery mechanism and the ticket issuing mechanism, and the mechanism also comprises a correlation sensor used for controlling the motor and the synchronous belt, wherein the first delivery mechanism and the second delivery mechanism can operate simultaneously or independently and can deliver the ticket to the ticket issuing mechanism. The delivery mechanism of the ticket selling module of the invention is in an open mode with two delivery mechanisms and one ticket issuing mechanism, can be convenient for operation and maintenance, and can greatly improve the ticketing issuing efficiency.

The invention discloses a unidirectional cross-security subzone transformer substation comprehensive measurement and control platform. The platform comprises a security zone 3 and a security zone 1; and the security zone 3 is connected with the security zone 1 through a data forward isolation device. The invention discloses a unidirectional cross-security subzone transformer substation comprehensive measurement and control method. By the method, the intelligent monitoring of substation operation equipment is realized by transmitting data from the security zone 1 to the security zone 3 through the data forward isolation device. The invention provides a unified monitoring platform on the basis of a data unidirectional transmission isolation technology, a substation application protocol matching and analyzing technology, a real-time data response technology, a substation operation equipment intelligent remote control technology and a substation operation equipment intelligent monitoring technology for solving the problems of external network control vulnerability which damages substation equipment non-permissively and intentionally, the closure of substation equipment monitoring data, the staleness of detection data, the oneness of intelligent remote control and the like.

The invention belongs to the arcology field, in particular relating to a building natural respiration ecological purification method and a building which adopts the method. The method comprises the following steps: firstly, an ecological compartment is established; the ecological compartment is an independent compartment and provided with a system with ecological purification function inwards; secondly, exchange of air in the ecological compartment and air in building units of the building is realized through pipelines and channels. The ecological building comprises a building body (1) and the ecological compartment (2), wherein, a plant soil pool (3) is arranged inside the ecological compartment (2); chambers of the ecological compartment are communicated with the building units of the building body (1) through ventilation channels; the ecological compartment (2) is arranged on the lower part of the building body (1); lighting glass (4) and a rainwater collection channel (5) are arranged on the top of the ecological compartment (2); and a water storage tank (6) and a plant water pool (7) are also arranged inside the ecological compartment (2) and communicated with each other.

The invention belongs to the technical field of utilization of biomass, and discloses a front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for a coal-fired boiler. Biomass ultra-high-speed self-balancing gasifying equipment is used for gasifying biomass, and after being cooled and pressurized, fuel gas is delivered into a hearth of the coal-fired boiler and then is combusted. A fuel gas cooling medium is steam which is extracted from a medium-pressure section in a turbine and the temperature of the steam is 400 DEG C, after heat is exchanged between the steam and the fuel gas, secondary heat exchange between the steam and air is implemented, and high-temperature air is produced and supplied for a gasifier. A biomass gasifying coupling large coal-fired power generation system is realized, biomass power generation parameters and efficiency are improved by a high-capacity and high-parameter turbine power generation system, the problem that an existing biomass direct-fired technology is small in power generation scale and low in efficiency is solved, the front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for the coal-fired boiler are suitable for high-alkalinity and high-moisture biomass, and the utilization range of biomass is expanded.

The invention belongs to the technical field of a multi-agent system, and particularly relates to a workshop scheduling agent group for intelligent manufacturing, so as to solve the problems that the existing multi-agent system has a single structure, and the distributive advantages of the multiple agents can not be played. Thus, the workshop scheduling agent group comprises a main agent, a branch agent and a basic agent, wherein the main agent is configured to receive production plan information and receiving data uploaded by the branch agent to monitor the production process of the workshop in real time; the branch agent is configured to receive a production task issued by the main agent and receiving real-time production information data uploaded by the basic agent; and the basic agent is configured to receive and execute a task instruction sent by the branch agent. In the technical scheme of the invention, through distributing the production task to different roles in the agent group, the production task is completed through mutual cooperation and match among agents, the production efficiency is improved, and the manpower cost is reduced.

The invention discloses multifunctional hydraulic support equipment used for a fully-mechanized top coal caving face underground coal mine. The equipment consists of two groups of hydraulic supports and a pushing jack, wherein the two groups of hydraulic supports are arranged forwards and backwards and are of same structures, and the pushing jack is connected with the two groups of hydraulic supports; each group of hydraulic supports comprises two bases, four vertical posts, two top beams and a link mechanism respectively hinged with the corresponding base and the top beam; each group of hydraulic supports further comprises an overturning and telescoping mechanism and a bottom beam adjusting and telescoping mechanism, wherein the overturning and telescoping mechanisms are arranged at one sides of the top beams and are used for adjusting the supporting distances of the top beams according to the width of the fully-mechanized top coal caving face, and the bottom beam adjusting and telescoping mechanisms are arranged at one sides of the bases and are used for adjusting the distances between the bases and other supports. The equipment provided by the invention is simple in structure and convenient to use, 'one support having three functions' can be realized, the research and development expenditure and research and development time can be saved, the production cost can be reduced, and the proper adjustment can be carried out according to the change of the distance between face supports or the width of a roadway, therefore the universal support on the face and the roadway can be realized.

A novel linear motion plane grinding device comprises an inserting rod, a cardan joint, a bevel gear II, a lead screw sliding table, a sliding table back plate, a bevel gear I, a linear guide rail, ashaft II, a sliding block, a motor plate, a cylinder gear II, a cylinder gear I, a motor II, a motor I, a bend shaft, a fixing vertical plate, a shaft IV, a fixing transverse plate, a chuck, a workpiece disc, a grinding disc, a coupler I, a shaft I, a bull eye wheel, a shaft III and a coupler II. Through a mechanical structure, one motor is used for driving the workpiece disc to achieve irrationalnumber self-rotation, meanwhile, the other motor drives the workpiece disc to do the variable range linear motion, the workpiece disc achieves the self-rotation movement and the linear movement in the grinding process, the grinding track line is not closed, and the distribution range of the track line on the grinding disc is enlarged. By means of the novel linear motion plane grinding device, thegrinding precision and efficiency are improved.

The invention relates to a self-locking nut closing device. The self-locking nut closing device comprises a die holder. The front end, facing a self-locking nut, of the die holder is movably providedwith a closing die assembly in the front and back direction. The closing die assembly comprises at least two clamping dies which are evenly distributed in the circumferential direction. The opposite inner sides of the front ends of the clamping dies are provided with closing die cavities for containing the self-locking nut. The closing device further comprises a drive mechanism used for driving the closing die assembly to do reciprocating motion. Conical surface cooperating structures are arranged between the die holder and the clamping dies and are used for guiding the clamping dies to extrude and get close to each other when the closing die assembly moves backwards so that the clamping dies can carry out extruding and closing operation on the self-lock nut in the closing die cavity. Theself-lock nut closing device is mainly used for carrying out secondary closing on a nut fixed to a related component, and the nut does not need to be dismounted from the related component. The self-locking nut closing device is simple in structural design, convenient to operate and capable of effectively solving the closing problem of the fixed nut.

The invention discloses a novel arc swinging plane grinding device. The novel arc swinging plane grinding device comprises a motor bracket, a motor I, a rigid coupling, a lower arc-shaped guide rail,a cylindrical gear I, a cylindrical gear II, a bullseye eye wheel, a shaft I, a gear fixing frame, a lower swing arm, an upper swing arm, an upper arc-shaped guide rail, a fixed vertical plate, a motor plate, a bending shaft, a bevel gear II, a motor II, a plum coupler, a shaft II, a cylindrical gear III, a cylindrical gear IV, a shaft III, a shaft IV, a bevel gear I, a universal joint, a fixed cross plate, a shaft V, a chuck, an inserting rod and a workpiece disc. The workpiece disc is driven by the mechanical mechanism and one motor to form an irrational number of autorotation, and at the same time, the other motor drives the workpiece disc to do swing movement with variable swing angle, so that the workpiece disc can realize the rotation and swing in the grinding process, so that a grinding track line is not closed, and the distribution range of the track line in the grinding disc is enlarged. According to the novel arc swinging plane grinding device, and the precision and the efficiency of the plane grinding are improved.

The invention relates to a cervical vertebra intervertebral disc prosthesis which comprises an upper prosthesis plate and a lower prosthesis plate. The upper prosthesis plate and the lower prosthesis plate are matched. Arc-shaped protrusions are arranged on the upper surface of the upper prosthesis plate and the lower surface of the lower prosthesis plate, the front portion of the assembled cervical vertebra intervertebral disc prosthesis is defined as the front end, the rear portion of the assembled cervical vertebra intervertebral disc prosthesis is defined as the rear end, and hemispheric protrusions are arranged on the front ends and the rear ends of the arc-shaped protrusions respectively. The arc-shaped protrusions are additionally arranged on the spherical protrusions of the upper plate and the lower plate so that the cervical vertebra intervertebral disc prosthesis can be in close contact with a vertebral endplate and slide forwards with a long distance, and the problem that the front portion is closed after the prosthesis is implanted is solved.

The invention discloses a chute safeguard device and aims to solve the problems that over-simplicity of a traditional treatment method of a discarded chute causes great potential hazards to production safety and a traditional closure wall for closing access roads, having no waterproof function, contaminates the chute. The chute safeguard device comprises an upper cover plate, a lower cover plate and a balloon; the balloon is disposed below the upper cover plate and surrounds the circumference of the lower cover plate. The balloon is disposed below the upper cover plate and surrounds the outer side of the lower cover plate. The underground mine operational safety condition is greatly improved, and the chute safeguard device has the advantages that contact tightness is good, water resistance is good, universality is good, mounting is time saving and labor saving, and the device is reusable.

The embodiment of the invention discloses a vehicle and road synergetic lane state release device and system. The lane state release device comprises a positioning module and a radio frequency communication module, and is placed on a target lane and used for marking a closed part of the target lane; and the radio frequency communication module is connected with the positioning module and used forobtaining position information of the lane state release device from the positioning module, and sending a V2X message to vehicle-mounted terminals of vehicles, about to travel to the closed part of the target lane, on the target lane, wherein the V2X message contains the position information of the lane state release device. The vehicle and road synergetic lane state release device and system have the following advantage that the problem that in the prior art, the cone barrel laying mode is adopted, and consequently drivers cannot be informed of lane closure in advance is solved.

The invention provides an assembly type external corner installing structure of a skirting line. The assembly type external corner installing structure of the skirting line comprises an external corner clamping piece and an external corner blocking board. The external corner clamping piece is an L-shaped board body, the external corner clamping piece is fixedly connected to a wall external corner,two opposite side boards of the external corner clamping piece are provided with two clamping grooves, the cross sections of the first clamping grooves are triangular, clamping parts are arranged onthe end face of the skirting line, and the clamping parts are clamped into the first clamping grooves; the external corner blocking board is an L-shaped board body, a clamping hook body is arranged onthe inner side face of the external corner blocking board, and the clamping hook body is clamped into a second clamping groove formed in the external corner clamping piece. The invention further provides an assembly type external corner installing method of the skirting line. Compared with the prior art, the assembly type external corner installing structure is easier to install, cutting and opposite joint processing by workers are not needed, meanwhile, splicing joints are tidy, and the impression and quality of the external corner of the skirting line can be effectively improved.

The invention discloses a flame-retardant activated carbon composite sheet which comprises a metal layer, two bonding layers and two activated carbon layers, the metal layer is composed of an aluminum sheet, the bonding layers are composed of a bonding agent, and the corresponding bonding layers are correspondingly located on the upper surface and the lower surface of the metal layer; each activated carbon layer is adhered to and fully covers the corresponding upper surface and lower surface of the metal layer through the corresponding adhesive layer; one surface of the activated carbon layer is exposed to the outside; and flame-retardant particles are distributed in the bonding layer. The adsorption efficiency is greatly improved. The problem that traditional honeycomb activated carbon is easy to damage is avoided. And the risk that activated carbon is on fire under the high-temperature condition can be effectively prevented. The honeycomb activated carbon sheet can be made into planar and corrugated sheets, and a honeycomb-like structure can be formed through cross stacking of the two sheets to replace a traditional honeycomb activated carbon product. The device is wide in application range, low in cost and convenient to install and maintain.

The invention relates to the technical field of building decoration, in particular to a multifunctional edge closing line. The multifunctional edge closing line comprises a clamping piece, a panel connected with the clamping piece, a leveling assembly connected with the clamping piece and a wall body and a leveling keel connected with a leveling screw rod, wherein the leveling assembly comprises the leveling screw rod connected with the wall body. The clamping piece comprises a bottom edge connected with the leveling screw rod and side edges clamped with the leveling keel, the side edges comprise an upper edge plate away from the panel and a lower edge plate connected with the panel, the lower edge plate is provided with a sliding rail, and the sliding rail is connected with a hook lock. The sliding rail is arranged on the lower side plate of the clamping piece, so that the closing problem of a wall top veneer is solved; meanwhile, a picture frame can be hung; and secondly, synchronousleveling of the sliding rail and the clamping piece can be achieved through the leveling assembly, secondary installation operation is not needed, and the construction process is simplified.

The invention provides a mounting structure of an arc-shaped external-corner adapter of an assembly type skirting line. The mounting structure involves a wall surface, the skirting line and the arc-shaped adapter, wherein the arc-shaped adapter comprises an arc-shaped external-corner clamping plate and an arc-shaped external-corner cover plate, one surface of the arc-shaped external-corner clamping plate is fixedly connected to an external corner of the wall surface, two first clamping grooves are formed in the other surface of the arc-shaped external-corner clamping plate, the cross section of each first clamping groove is triangular, at least one second clamping groove is formed in each of the two sides of the arc-shaped external-corner clamping plate, two clamping hooks are arranged onthe arc-shaped external-corner cover plate and clamped into the first clamping grooves, at least one third clamping groove is formed in each of the two sides of the arc-shaped external-corner cover plate, a first protruding part and a second protruding part are arranged on the skirting line, the first protruding part is clamped into the second clamping grooves, and the second protruding part is clamped into the third clamping grooves. A mounting method of the arc-shaped external-corner adapter of the assembly type skirting line is provided. The structure is easy to install, manual cutting andseam aligning treatment is not needed, and potential safety hazards can be avoided.

The invention discloses a door pocket capable of being cut and clamped and provided with a fixing step. The door pocket comprises a pocket board, a first line and a second line, wherein the first line comprises plug pins, the pocket board comprises a front pocket board and a back pocket board which are formed integrally, and the fixing step is formed at the connecting position of the front pocket board and the back pocket board. The front pocket board is 6mm-15mm higher than the back pocket board and comprises a surface layer, a plurality of first connecting ribs and a bottom layer, wherein the surface layer is connected with the bottom layer through the plurality of first connecting ribs, the inner surface of the surface layer is parallel to the inner surface of the bottom layer so as to enable a plurality of line inserting grooves to be formed between the surface layer and the bottom layer, the plug pins of the first line are plugged into the line inserting grooves, and the back pocket board is connected with the second line. The door pocket capable of being cut and clamped and provided with the fixing step can meet the requirement for different sizes through unidirectional cutting, the rest portion after cutting is provided with the fixing step and can be combined with the lines to form a complete set, and meanwhile the cut portion can be further combined with the lines and utilized.

The invention relates to a self-locking nut closing device. The self-locking nut closing device comprises a die holder. The front end, facing a self-locking nut, of the die holder is movably providedwith a closing die assembly in the front and back direction. The closing die assembly comprises at least two clamping dies which are evenly distributed in the circumferential direction. The opposite inner sides of the front ends of the clamping dies are provided with closing die cavities for containing the self-locking nut. The closing device further comprises a drive mechanism used for driving the closing die assembly to do reciprocating motion. Conical surface cooperating structures are arranged between the die holder and the clamping dies and are used for guiding the clamping dies to extrude and get close to each other when the closing die assembly moves backwards so that the clamping dies can carry out extruding and closing operation on the self-lock nut in the closing die cavity. Theself-lock nut closing device is mainly used for carrying out secondary closing on a nut fixed to a related component, and the nut does not need to be dismounted from the related component. The self-locking nut closing device is simple in structural design, convenient to operate and capable of effectively solving the closing problem of the fixed nut.

The invention discloses a fishbone needle type cathode line for a wet type electric precipitator. The fishbone needle type cathode line comprises a cathode rod. The cathode rod is sleeved with a plurality of stainless steel rings. Each stainless steel ring is fixedly connected with N fishbone needles. The included angle between every two adjacent fishbone needles is 360 degrees / N, wherein N is a positive integer. The N fishbone needles on the adjacent stainless steel rings are arranged in a staggered manner. The discharge sharp end of each fishbone needle is in a ball shape. The novel fishbone needle type cathode line for the wet type electric precipitator is simple in structure, convenient to install, high in dust removing efficiency and capable of being adjusted in good time according to actual situations. The cathode line has the beneficial effects that the discharge inception voltage is low, the voltage current characteristic is good, and the adaptability to the smoke change is high, and the dust and mist removing efficiency is guaranteed.

The invention discloses an automatic assembling device for a flexible sealing ring and belongs to the technical field of sealing ring assembly. The automatic assembling device comprises a sealing ring assembling mechanism. The sealing ring assembling mechanism comprises an assembling lifting sliding table, a downward pressing assembly and an assembling rotating motor used for driving the downward pressing assembly to rotate and adjust, the assembling rotating motor is arranged on the assembling lifting sliding table, the downward pressing assembly comprises a pressing bracket and a downward pressing roller, the downward pressing roller is rotationally arranged on the pressing bracket, the pressing bracket is connected with an output shaft of the assembling rotating motor, the downward pressing roller is driven by the assembling lifting sliding table to press the sealing ring downwards, and the sealing ring assembling mechanism is driven to move along a shape track of the sealing ring, so that the whole sealing ring is pressed into a mounting groove or a contour route. Compared with the prior art, by using the automatic assembling device, the assembling stability and consistency of the sealing ring are improved while the assembling efficiency is improved and the operation intensity is weakened, so that the airtight effect of a product is improved, the universality is high, and the automatic assembling device can adapt to sealing rings of different types, different sizes and different shapes.

The invention belongs to the technical field of utilization of biomass, and discloses a front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for a coal-fired boiler. Biomass ultra-high-speed self-balancing gasifying equipment is used for gasifying biomass, and after being cooled and pressurized, fuel gas is delivered into a hearth of the coal-fired boiler and then is combusted. A fuel gas cooling medium is steam which is extracted from a medium-pressure section in a turbine and the temperature of the steam is 400 DEG C, after heat is exchanged between the steam and the fuel gas, secondary heat exchange between the steam and air is implemented, and high-temperature air is produced and supplied for a gasifier. A biomass gasifying coupling large coal-fired power generation system is realized, biomass power generation parameters and efficiency are improved by a high-capacity and high-parameter turbine power generation system, the problem that an existing biomass direct-fired technology is small in power generation scale and low in efficiency is solved, the front biomass ultra-high-speed self-balancing gasifying co-combustion device and method for the coal-fired boiler are suitable for high-alkalinity and high-moisture biomass, and the utilization range of biomass is expanded.

The invention relates to a degradable phase-change composite fiber and a preparation method thereof. The degradable phase-change composite fiber adopts polyethylene glycol as a phase change material and uses spinning grade polylactic acid as a sea material; the phase-change material sealing agent adopted by the prepared degradable phase-change composite fiber comprises terephthalic acid and ethylene glycol; the preparation method comprises the steps of preparing the sealing agent, mixing the sealing agent and the polyethylene glycol to obtain suspension liquid, and carrying out fused composite spinning on the suspension liquid and the polylactic acid. Terephthalic acid and ethylene glycol, which are used as the sealing agent, are mixed with the phase change material to form uniform suspension liquid, the suspension liquid is sprayed out through a spinneret orifice, the uniformly-dispersed sealing agent is solidified in a physical manner and uniformly seals the phase change material to form a large capsule of the phase change material uniformly distributed longitudinally along fibers, and therefore, the sealing problem of the phase change material in the phase-change composite fiber is solved, and unsealed phase change material cannot be brought into the using link.

This application discloses a method and system for realizing CDN based on SDN, including: respectively adding CDN application functions, control functions and network entity resources at the application layer, control layer and data forwarding layer of SDN; including: receiving a CDN application application When , the SDN application layer generates resource requirements and business orchestration information according to the CDN application application, so as to send the reservation application for the resources required by the CDN application to the SDN control layer, so that the SDN control layer can allocate the resources required by the CDN application, combined with network load balancing and The path policy generates the content routing table for data transmission, and then generates the L2 / L3 forwarding table, which is sent to the SDN data forwarding layer; when the SDN data forwarding layer receives the content distribution / delivery operation request, it executes the CDN business according to the L2 / L3 forwarding table related operations. The present invention realizes the system function of CDN based on SDN, effectively solves the complex problems of closed bearer network, exclusive hardware, and management faced by CDN, and realizes reasonable selection of CDN application network resources, engines, and forwarding paths.

The invention provides a method for stabilizing the flow pulsation of a gear pump driven by a non-circular gear at variable speed and the gear pump, and belongs to the field of fluid transmission. Aiming at solving the problem that the flow pulsation of an existing gear pump is large, the invention provides the gear pump capable of greatly reducing the flow pulsation of the gear pump. The low-pulsation gear pump comprises a motor, a gear pump and a gear box, wherein the gear pump mainly comprises a pair of involute circular gears; the gear box mainly comprises a pair of non-circular gears and a pair of reduction gears; an input shaft of the gear box is connected with the motor through a coupler; and an output shaft of the gear box is connected with a driving shaft of the gear pump through a coupler. According to the low-pulsation gear pump provided by the invention, on the premise that an existing gear pump structure is not changed, the flow pulsation of the gear pump is effectively restrained through variable-speed driving of the two-stage gear box containing the non-circular gears, and the low-pulsation gear pump has the advantages of being small in pulsation, low in cost, high in reliability, simple in structure, convenient to maintain and the like.

The invention discloses a honeycomb core for an active cooling structure as well as a preparation method and an application of the honeycomb core. The preparation method comprises the steps of cutting of foil, preparation of a laminated and laid prefabricated body, preparation of a cured prefabricated body, preparation of a drilled prefabricated body, unfolding of the drilled prefabricated body and the like. The holes are drilled in the side wall of the honeycomb core material, mutual communication between cells of the closed honeycomb core is achieved, the honeycomb core material is applied to an active cooling structure, flowing of a cooling medium in the honeycomb core can be achieved, and the rapid cooling effect is achieved. The preparation method disclosed by the invention is simple in process, the problem that honeycomb core grids are closed is solved while the bearing capacity of the honeycomb structure is exerted, and the honeycomb core which can be used for an active cooling bearing structure is obtained.