68results about How to "Meet the need for protection" patented technology

The invention discloses a power distribution network high voltage line single-phase line-breaking fault identification system and method based on electric energy metering device. The power distribution network high voltage line single-phase line-breaking fault identification method comprises steps of using voltage phasor data of a two-phase line which is two-element electric energy metering device which performs high-voltage supply high-voltage metering to realize an identification function on a single-phase line-breaking fault of a 10kV power distribution line, using three-phase phase voltage phasor data measured by a high-voltage supply and low-voltage metering three-phase four-line system electric energy metering device to realize an identification function on the 10kV power distribution line single-phase line-breaking fault. In the power distribution network high voltage line single-phase line-breaking fault identification method and the application, massive electric energy metering devices having functions of single-phase line-breaking fault identification are installed, the electric energy metering devices upload the voltage phasor data and the single-phase line-breaking determination result to a remote main station for analysis, and a single-phase line-breaking fault interval of the 10kV power distribution network can be positioned according to a relative relation of installation positions.

The invention provides a jet combustion device and method for super-critical water oxidization of organic matter. The device comprises an inner sleeve and an outer sleeve which are arranged together in a coaxial sleeving manner; a coaxial jet combustor extending into the reactor inner sleeve is coaxially installed at the top of the reactor inner sleeve; the coaxial jet combustor is of a three-layer coaxial sleeve structure, an auxiliary heat source access channel is located on the innermost layer, an oxidant access annular channel is located on the middle layer, and a waste liquid access annular channel is located on the outermost layer; and a process water jacket region, a super-critical water oxidization region and a subcritical water region capable of dissolving inorganic salt are formed in a reactor.

The invention discloses a system and method for realizing the security storage and the access control of data. The system comprises an application server, a storage security gateway, a security strategy server and a backend storage system, wherein the storage security gateway is additionally arranged between the application server and the backend storage system so as to realize the partition, the isolation and the access control of data security domains. The storage security gateway and a storage virtualization gateway can synergistically work, and data can be stored in the manner of the security domains on an actual physical medium by utilizing a virtualization technique. When a data access request arrives at the storage virtualization gateway, the storage virtualization gateway can invoke the functions of the storage security gateway so as to realize the isolation and the access control of the data security domains. Because all data requests for access to the backend storage system can be processed by the storage security gateway, security control is guaranteed to be performed on the single path of data without being bypassed. In addition, security control is realized at the bottom layer of data access, so that attack means to data by upper application layers can be effectively avoided.

The method discloses a method and device for reinforcing a dynamic link library (DLL) file of an installation package. The method includes the steps that the DLL file of the installation package is encrypted, and the encrypted DLL file is obtained; a decryption program corresponding to the encrypted DLL file is generated; the encrypted DLL file and the decryption program are packaged in the installation package. According to the technical scheme, the DLL file is reinforced through the decryption program independent of the DLL file, cracking of the DLL file is difficult to achieve through a reverse analysis method, therefore, the DLL file is effectively protected, and the requirements of a developer for protecting the DLL file are met.

The embodiment of the invention provides an application program access method and device. The method comprises the steps that in a preset statistical period, statistical analysis is performed on the number of times of conformation of an access response message to a preset condition; the access response message is returned by an accessed object according to an access request message sent by an application program; when the number of times of conformation of the access response message to the preset condition is greater than a preset threshold, a shutdown state is triggered; and in the shutdownstate, when the application program sends the access request message, an anomaly is sent out, and the access request message is forbidden to be sent to the accessed object. Through the embodiment, a fusing protection mechanism can be provided when the application program accesses various accessed objects, and the demand of protecting the application program is met.

Concrete surface protection material consists of a component A and a component B. The component A comprises poly-aspartate, inorganic nano material, a silane coupler and a reactive diluent. The component B comprises a curative agent. The material overcomes the concrete defects of bad mechanical property, poor capacity of bearing temperature variation, wetting and drying alternation, and freezing and thawing cycle, vulnerability to damage, etc. The concrete surface protection material is easy in construction and convenient in secondary repair with super ageing resistance and excellent mechanical property. The material can not only meet the need of concrete surface protection, but also serve as a metal corrosion prevention material. The invention also discloses a preparation method for the concrete surface protection material.

Disclosed is a microgrid integrated relay protection method suitable for grid-connected operation and isolated island operation. When a circuit has a fault under different operation modes of a microgrid, a fault section can be cut off accurately, according to a provided setting method and different relative positions of a micro power source and a protection device, different distance setting methods are adopted, adaptivity is achieved, and the problems of protection failures, maloperation and the like caused by distributed power source output currents are solved. In addition, the method only needs to be slightly modified in a general microcomputer protection program, no additional circuit or device needs to be mounted, cost is low, and great significance in the safety of the microgrid is achieved.

The invention discloses a method for first continuously annealing nonferrous metal wires in an on-line mode and then hard drawing the nonferrous metal wires. The method comprises the following steps of wire putting, on-line continuous middle annealing, drawing processing and wire arraying and collecting step. The invention has the advantages of putting forward a fire-new annealing process route and filling up the blank of the tinily drawing on-line continuous middle annealing process. Compared with the prior on-line continuous finished product heavy current annealing process used in the cable industry, the method can simplify the structure of equipment, reduce cooling water flow, install heat insulation facilities and leave out two process steps of external connection of protective gas and dryness of compressed air. Meanwhile, because non-contact annealing is adopted, the annealing quality is ensured. The device is easy to operate and maintain, has low manufacturing and use cost and can be applied to the whole cable industry, especially small and medium-sized enterprises. The on-line continuous middle annealing method is a novel basic processing technology capable of saving energy and water, improving quality and lowering cost in the cable industry.

The invention discloses a method and device for reinforcing a resource file of an installation package. The method includes the steps of extracting the resource file of the installation package, encrypting the extracted resource file, replacing an original resource file in the installation package with the encrypted resource file, and generating a resource decrypting program to be inserted in the installation package. The technical scheme is only aimed at the resource file in the installation package, other files in the installation file are not influenced, the resource file can be effectively protected, the resource file in the installation package can hardly be decrypted even when the installation package is unpackaged, and the requirement of a developer for protecting the resource file is met.

This invention relates to method for judging saturation of current transformation based on difference value of difference current. Said method comprises steps of: sampling phase current according preset sampling rate, storing said sampling results in storage zone, processing said results, calculating difference value of the phase difference current, comparing said calculated difference value with preset valve valve. If said difference value is greater than valve value with an amount, current transformation is judged, if not, there must be fault in the zone. This invention has advantages of: decreased calculation for judging saturation of current transformation, high safety for bus bar protection.

The invention discloses a packing box, which includes a box body and at least two cushioning devices that are symmetrically arranged in the box body. Each cushioning device includes a bottom plate, two short side lateral plates, one partition board, one concave structure and a fittings box structure. The short side lateral plate corresponds to the short side of the bottom plate and is vertically connected with the bottom plate. The partition board divides the cushioning device into a first rectangular and a second rectangular. The concave structure forms a holding space sinking to the inside of the first rectangular on the surface of the first rectangular to hold a first article. The fittings box structure is on the second rectangular and can be optionally opened or closed to hold a second article in the second rectangular.

The invention provides desulfurization and defogging equipment, which comprises a waste gas desulfurization structure and a waste gas defogging structure, wherein the waste gas desulfurization structure comprises a desulfurization shell; at least one desulfurization component is arranged in the desulfurization shell; the desulfurization component comprises a high-pressure water pipe and a screen cloth component arranged by facing the high-pressure water pipe; the high-pressure water pipe injects current to knock the screen cloth component to generate a water curtain and sprays; the waste gas defogging structure comprises a defogging shell and at least one defogging component arranged in the defogging shell; the front side of the defogging component is arranged by facing a waste gas airflowdirection; the waste gas is desulfurized and purified by the waste gas desulfurization structure to enter the defogging shell, and the temperature and the water mist of the waste gas are absorbed bythe defogging component to realize the cooling and the defogging of the waste gas. The invention provides the desulfurization and defogging equipment, and a traditional spray type waste gas processingstructure is optimized to improve the desulfurization and defogging effect of the waste gas processing structure.

The invention discloses a degradable and environment-friendly anti-seepage film for an oil field and a preparation method of the degradable and environment-friendly anti-seepage film. The degradable and environment-friendly anti-seepage film is prepared from the components by weight as follows: polylactic acid, poly (butyleneadipate-co-terephthalate), plant fibers, glycerin or epoxidized soybean oil and inorganic filler. The preparation method comprises specific preparation steps as follows: weighing the polylactic acid, poly (butyleneadipate-co-terephthalate), the plant fibers, glycerin or the epoxidized soybean oil and the inorganic filler; adding the raw materials to a high-speed mixer for uniform mixing; adding the mixture to a hopper of a twin-screw extruder, and obtaining modified resin after brace granulating; placing the modified resin in a drying machine for full drying, and putting the dried modified resin in a cast sheet machine to obtain the degradable, environment-friendly and anti-seepage film for the oil field. The film can be completely biodegraded in the nature after used, degradation products meet EN13432 standards for compostable and are non-toxic and harmless to soil, and the technical standard for environment requirements is high. The preparation method is simple in process, easy to control and suitable for industrial mass production.

The invention discloses a network-sampling-based proportional braking coefficient variable digital transformer protection device, which is characterized by comprising a network sampling module, a logic operation main CPU (computer processing unit) module and a GOOSE tripping transmission module, wherein the network sampling module is used for receiving sampling data from a combination unit, marking a timestamp on the sampling data, and receiving a synchronization signal from a synchronization signal source device; the logic operation main CPU module is connected with the network sampling module, and is used for protection operation and adjustment over a proportional braking coefficient; and the GOOSE tripping transmission module is connected with the logic operation main CPU module, and is used for transmitting a tripping message. The protection device can realize network sampling and change the proportional braking coefficient for the differential protection of a transformer according to time of arrival, so that the requirements of a power system user on protection over a digital transformer under an intelligent transformer substation and digital transformer substation network sampling condition can be met.

The invention discloses a preparation process of a drilling fluid based on control of addition of a rigid blocking agent. The preparation process comprises the following steps: (a) preparing sodium bentonite for later use; (b) adding a tackifier PAC-HV and completely dissolving the tackifier; (c) adding a filtrate reducer SMP-2; (d) adding KCl and NaCl; (e) adding a deformation blocking agent FT-1 and 1.8-2.0% of rigid blocking agent CaCO3; (f) adding SPNH and PSC-1; (g) adding TRH-2 and acting the TRH-2 adequately; and (h) heating the system to obtain the product. According to the preparation process provided by the invention, not only can high temperature resistant high-density drilling fluid be prepared successfully, but also the preparation process is simple and easy to operate by controlling the addition of the rigid blocking agent in the preparation process. The preparation cost of the drilling fluid is lowered, and the drilling fluid system prepared is high in plastic viscosity and stability, so that the demands for drilling engineering and reservoir protection are satisfied.

The invention discloses a construction method for in-situ cold regeneration of a highway cement stabilized macadam base, and belongs to the technical field of highway construction. The method comprises the following steps: S1, marking out a macadam spreading area boundary line by using white lime, loading macadam into a macadam spreading vehicle, and spreading the macadam onto an original road byusing the macadam spreading vehicle; and S2, manually spreading cement on the original road, and carrying out slicking treatment. According to the invention, optimized auxiliary material addition canbe determined through sampling, a better regeneration effect is achieved, excessive or insufficient auxiliary materials are avoided, the use performance and comfort of a road are guaranteed, meanwhile, in the construction process, milled old materials are directly utilized on site, the cost is saved, a construction period is short, and an exploitation amount of new materials is greatly reduced through utilization of the old materials; and the problems of transportation and stacking of old materials do not exist, and the requirement for environmental protection is fundamentally met.

The invention discloses a device and a method for sodium thiocarbonate containing sewage treatment and resource recovery. The device for sewage treatment and resource recovery comprises a sewage collection and reaction unit, a sewage treatment and circulation unit, CS2 recovery unit and a sulfur recovery unit, wherein the sewage collection and reaction unit is respectively connected with the sewage treatment and circulation unit and the CS2 recovery unit; and the CS2 recovery unit is connected with the sulfur recovery unit which is connected with the sewage treatment and circulation unit. Thedevice for sewage treatment and resource recovery provided by the invention can meet the demands of environmental protection, recovers resources, realizes cyclic utilization of the resources, reducesthe cost of production, and meets the needs of an enterprise for management and development.

The invention relates to an in-situ chemical oxidation remediation method for soil contaminated by benzene series. The method comprises the following steps: injecting a soil remediation agent, carrying out ex-situ treatment after extraction and conducting periodic monitoring. After the injected soil remediation agent is in full contact with pollutants adsorbed on soil particles in a contaminated soil layer under the action of underground water runoff, permeation and hydraulic gradient, the pollutants are degraded into low-molecular simple organic matters by utilizing relatively high oxidation-reduction potential of the soil remediation agent, so the in-situ chemical oxidation remediation method for the soil contaminated by benzene series is realized.

The invention discloses a method for preparing chloride metallocene polypropylene by an acid-phase emulsion melting process. The method comprises the processes of emulsifying, chlorinating and neutralizing all units, wherein in the chlorination process, initiation reaction can be carried out by photo-initiation and thermal initiation through the adding of an initiator. The chlorination reaction of metallocene polypropylene is carried out in a hydrochloric acid medium, the reaction is similar to homogenizing reaction and has the properties of free radical reaction, and the metallocene polypropylene is dispersed and suspended in the acid-phase medium under the action of a dispersant, an emulsifier, agitating and shearing. As the disappearance of metallocene polypropylene crystal is caused by chlorination reaction, and the polarity of metallocene polypropylene macromolecules is increased by the introduction of chloride atoms at the same time, CmPP (Chloride Metallocene Polypropylene) prepared by the invention is easily dissolved in organic solvents, such as methylbenzene and xylene, and polypropylene chloride becomes a soluble material.

The invention relates to a Parallogram-YOLOv4-based thermal power plant rain outlet pollutant identification method. The method comprises the following steps: 1) installing a high-definition camera at a thermal power plant rain outlet for real-time monitoring, acquiring real-time image information from the on-site high-definition camera, cutting an image, acquiring a to-be-monitored position image of a water area, and storing the to-be-monitored position image in a management system server; 2) transmitting the image to an early warning system server through a communication protocol, storing an original image in the early warning system server, and preprocessing the image after related path image information is stored in a database of the early warning system server; (3) carrying out, by the early warning system server, identification and detection on the pre-processed image by adopting a Parallogram-YOLOv4 algorithm; and 4) storing identification result information in a local database and uploading the identification result information to a monitoring server for real-time display. Compared with the prior art, the method has the advantages of high detection accuracy, high detection speed and the like.

The invention discloses a continuously adjustable electronic fuse special for a photovoltaic combiner box. The continuously adjustable electronic fuse comprises an electricity taking device, a direct-current stabilized power supply, a fixed resistor, an adjustor resistor, a Hall current collector, a micro solid-state relay, a current comparison circuit, an amplification circuit and a drive circuit; a normally-closed contact of the electricity taking device and a normally-closed contact of the relay are connected to a power transmission line in series, and the Hall current collector is arranged at the periphery of a power transmission line of the photovoltaic combiner box in a sleeving mode; the output end of the electricity taking device is connected with the input end of the direct-current stabilized power supply, and the direct-current stabilized power supply supplies a direct-current working power supply to the electronic fuse; the fixed resistor and the adjustable resistor are connected in series to form a voltage division circuit, the end, connected with the adjustable resistor, of the fixed resistor is connected with the inverted input end of the current comparison circuit, the output end of the Hall current collector is connected with the in-phase input end of the current comparison circuit, the output end of the current comparison circuit is connected with the amplification circuit and the drive circuit sequentially, and the drive circuit drives the relay; the rated current of the electronic fuse can be continuously adjusted to meet the requirements of various circuit protection.

The invention discloses a process for preparing a drilling fluid based on controlling dosage of a viscosity reducer. The process comprises the following steps of: (a) preparing sodium bentonite for future use; (b) adding a tackifier PAC-HV and completely dissolving the tackifier PAC-HV; (c) adding a filtrate reducer SMP-2; (d) adding KCl and NaCl; (e) adding a deformation blocking agent FT-1 and a rigidity blocking agent CaCO3; (f) adding 2-4% of viscosity reducer PSC-1; (g) adding TRH-2 so that TRH-2 acts thoroughly; and (h) heating the system and then adding a weighing agent, thereby obtaining the product. The process is capable of successfully preparing the drilling fluid having high temperature resistance and high density by controlling the dosage of the viscosity reducer PSC-1 in the preparation process, and is simple in preparation procedure and easy to operate; the preparation cost of the drilling fluid is reduced, and the prepared drilling fluid system is excellent in performance, thus the requirements for drilling project and reservoir protection are met.

A method for designing a load shade of geostationary orbit large-aperture optical imaging satellite includes such steps as: analyzing whether that key part of the load is illuminate or not and analyzing the shielding effect under different incident angles of sunlight by treating the limited characteristic points of the edge of the shade and the inner shade of the load, and calculating the shadingeffect under different incident angles of sunlight. 2, establishing a satellite yaw angle optimization algorithm to obtain an optimal yaw angle; 3, according to that optimal yaw offset angle, the total width of the sunshade being minimized by a three-plate bending design, the requirements of solar protection of satellite load and envelope size of the whole satellite are finally met, and the totalmass of the sunshade is ensure to be minimized at the same time.

This invention relates to method for judging saturation of current transformation based on difference value of difference current. Said method comprises steps of: sampling phase current according preset sampling rate, storing said sampling results in storage zone, processing said results, calculating difference value of the phase difference current, comparing said calculated difference value with preset valve valve. If said difference value is greater than valve value with an amount, current transformation is judged, if not, there must be fault in the zone. This invention has advantages of: decreased calculation for judging saturation of current transformation, high safety for bus bar protection.

The invention discloses a packing box, which includes a box body and at least two cushioning devices that are symmetrically arranged in the box body. Each cushioning device includes a bottom plate, two long side lateral plates, two short side plates and at least two holding structures. The bottom takes the shape of a rectangle, the two long side lateral plates are respectively vertically connected with the two long sides of the bottom plate and the two short side lateral plates are respectively vertically connected with the two short sides of the bottom plate. The holding structure is arranged in an area formed by the bottom plate, the long side lateral plates and the short side lateral plates, each storage structure has a recess, and the recesses are connected with each other and form a holding space. In addition, the plates of the cushioning device are also exposed.

The present invention relates to steel structure, mechanical driving, PLC application and other technology, and is especially one intelligent interlocked underground car park system comprising car bearing plates in independent structure, one hydraulic lift for lifting car in a car bearing plate, one car transporting conveyer for shifting car transversely to the lift or the parking site, and one intelligent control system with PLC. The present invention has the advantages of high area utilizing rate, low cost, fast car access, etc.

The invention relates to the technical field of recycling of waste lubricating oil, and particularly discloses a treatment process of regenerated lubricating oil. The treatment process of the regenerated lubricating oil comprises the steps of filtering, settling, refining, blending and the like. The treatment process of the regenerated lubricating oil can be used for recycling the waste lubricating oil, and has the advantages of no pollution to the environment and good treatment effect.

The invention provides a semiconductor packaging structure and a manufacturing method thereof. The semiconductor packaging structure comprises a first stacking structure and a second stacking structure which are stacked, the first stacked structure comprises a first dielectric layer, a first power chip, a first conductive connecting element, a first conductive column and a first patterned conductive layer; the second stacked structure comprises a second dielectric layer, a second power chip, a second conductive connecting element, a second conductive column, a second patterned conductive layer and a third patterned conductive layer; a first power wafer and a second power wafer are stacked up and down so as to provide a semiconductor packaging structure in which the first power wafer and the second power wafer can be directly and electrically connected through a circuit structure and related defects of a lead frame can be eliminated. In addition, the invention also provides a manufacturing method of the semiconductor packaging structure.

The invention discloses a high-voltage low-voltage preassembling type transformer substation ice-block-falling-resistant top cover structure. The high-voltage low-voltage preassembling type transformer substation ice-block-falling-resistant top cover structure comprises a frame, a cover plate and top covers, the cover plate is arranged on the frame, the top covers are arranged above the cover plate, a plurality of inversed-U-type plates are arranged on the cover plate, the upper end faces of the inversed-U-type plates and the top covers are respectively provided with mutually-corresponding connecting holes to enable the top covers to be capable of being installed and fixed on the inversed-U-type plates in a threaded connection mode, when ice blocks fall off, the top covers on the outer layer are smashed firstly, therefore, the cover plate on the lower layer is protected, the situation that the top covers are damaged by the ice blocks so that equipment is directly exposed in the outdoor environment is avoided, and the design protection requirement is met. The cover plate is of an eave type structure, the two sets of top covers cover two slopes of the cover plate respectively, the cover plate of the eave-type structure and the top covers are reasonable in structural layout, the structural strength is high, when the top covers are damaged, the top covers can be directly disassembled and replaced through threaded connection, and the top covers are rapid and convenient to maintain. Furthermore, a plurality of strengthening plates are arranged at the bottoms of the top covers, and the structural strength of the top covers is further strengthened.

The invention relates to a multifunctional and multidimensional canal system scientific research test system for a laboratory, and belongs to the technical fields of special canal measuring structures, canal system irrigation scheduling optimization, ecological canal design, lining canal roughness coefficient, canal flow velocity distribution law, pipe and canal joint work and the like. The systemcomprises a water pump unit, a fixed steel frame, a water stabilizing and supplying tank, a main canal, a return tank, a secondary canal, a water storage tank, a branch canal, a pressure measuring pipe row, a return pipe, a water supply pipe, a water stabilizing plate, a canal system hydraulic structure, a pressure measuring hole, a specific drop plate, a rectangular weir, a branch canal water collecting pool, a current meter, a water level measuring cylinder device and a data acquisition terminal. The device has the advantages of integrated work, multi-dimensional adjusting and control, simultaneous conducting of multiple studies and the like, and the scientific research contents which can be carried out comprises 1, specially arrangement of a channel water measuring structure, 2, irrigation scheduling optimization of a channel system, 3, ecological channel design, 4, coefficient of roughness of a lining channel, 5, distribution law of channel flow velocity, and 6, pipe-channel jointwork.