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 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.

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.

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 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 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 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 continuous adjustable electronic fuse specially used for photovoltaic combiner boxes, which comprises an electrical fetcher, a DC regulated power supply, a fixed resistance, an adjustable resistance, a Hall current collector, a miniature solid state relay, a current comparison circuit, an amplifier circuit and a drive circuit. The normally closed contacts of the electrical pickup and the relay are connected in series in the transmission line, and the Hall current collector is set on the periphery of the photovoltaic combiner box transmission cable; The power supply provides the DC working power supply for the electronic fuse; the fixed resistance and the adjustable resistance are connected in series to form a voltage divider circuit, and the end connected with the fixed resistance and the adjustable resistance is connected to the inverting input end of the current comparison circuit, and the Hall current collector The output terminal is connected to the non-inverting input terminal of the current comparison circuit, and the output terminal of the current comparison circuit is sequentially connected to the amplifier circuit and the driving circuit, and the driving circuit drives the relay; the rated current of the electronic fuse can also be continuously adjusted to meet the needs of various circuit protections.

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.

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 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.