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239results about How to "Simple operation and maintenance" patented technology

Coked and petrochemical wastewater treatment process having deep biochemical treatment and physicochemical treatment

The invention discloses a process method for treating coking wastewater and petrochemical wastewater with advanced biochemical and physic-chemical treatment. The method comprises a step of pretreatment, a step of conventional biological treatment, a step of advanced biochemical treatment and a step of materialized treatment, wherein, the step of pretreatment comprises adjustment, oil removal and floatation; the step of conventional biological treatment consists of an anaerobic-anoxybiotic-aerobic activated sludge process, an anoxybiotic-aerobic bio-film activated sludge process or an anoxybiotic-aerobic bio-film process which are performed in sequence; the step of advanced biochemical treatment adopts a filtering stage and a back purging stage which are performed alternately and repeatedly in a biological aerated filter, and the switching of the two stages are executed by an automatic control system; the step of materialized treatment adjusts pH of water treated in the biological aerated filter to be subacidity, adds Fe<2+> salt and H2O2 into the water and stirs to react in an advanced chemical oxidation pond, and then performs an operation mode of neutralization and precipitation. Therefore, final effluent organic substances can be reduced to a lower level, which can completely fulfill the first-grade national effluent standard, and can achieve recycle-water quality through increasing the dosage for the advanced chemical oxidation pond. The wastewater treatment process has simple operation and maintenance, and both BAF and ACO adopt automatic control.
Owner:北京嘉瑞环保股份有限公司

Garbage compression leachate comprehensive waste water treatment device and technological method

The invention provides a garbage compression leachate comprehensive waste water treatment device and technological method. The device comprises a grille, a waste water storage tank, an ultrasonic Electro-Fenton reactor, an intermediate water storage tank, an ultrasonic vibration film reactor and a vortex vibration film filtration system, wherein the grille, the waste water storage tank, the ultrasonic Electro-Fenton reactor, the intermediate water storage tank, the ultrasonic vibration film reactor and the vortex vibration film filtration system are sequentially connected. The device further comprises a sludge dewatering drying pool which is connected with a vortex energy-saving heat pump flash evaporator of the vortex vibration film filtration system and provided with a circuit connected with the ultrasonic vibration film reactor. Waste water sequentially flows through the grille, the waste water storage tank, the ultrasonic Electro-Fenton reactor, the intermediate water storage tank, the ultrasonic vibration film reactor and the vortex vibration film filtration system for redox reactions and filtration. The device is high in operability, high in regeneration cycle use rate and low in operation cost.
Owner:樊利华

Water quality in-situ pre-treatment method in water source region

The invention relates to a water quality in-situ pre-treatment method in a water source region. According to the method provided by the invention, a water channel is arranged according to a terrain of the water source region by taking a water fetching opening of a water supply plant as an end point, a photocatalytic purification region, a combined ecological floating bed purification region and an aquatic plant purification region are separately arranged along the water channel, and in-situ pretreatment is carried out on an inflow of the water supply plant in the water channel. The water channel is enclosed by isolating barriers, and a block for intercepting garbage and floating plants is arranged at the water inlet end of the water channel. The three purification regions can be combined in adaptation to local conditions. Compared to the prior art, the method provided by the invention effectively couples four in-situ water quality purification technologies: photocatalysis, ecological floating bed, ecological contact oxidation filler and plant repair. The method is simple in structural design, low in material cost, small in interference by construction and operation on the outside world, simple to maintain and manage, free of additional added chemical agents and safe and free of secondary pollution and can be used for effectively improving the inflow water quality of the water supply plant, so that the main water quality indexes are enhanced by at least one grade.
Owner:TONGJI UNIV

Method, device and system for creating bidirectional multicast distribution trees on basis of interior gateway protocol

An embodiment of the invention discloses a method, a device and a system for creating bidirectional multicast distribution trees on the basis of an interior gateway protocol, and relates to the technical field of communication. The technical scheme includes that the method comprises receiving a root address of at least one first node and a multicast group range supported by the first node; generating shortest paths from each first node, which is used as a source node, to other nodes according to the corresponding root address and a shortest path tree algorithm, and creating flooding trees according to the shortest paths; determining flooding trees corresponding to various three-layer multicast groups according to three-layer multicast group information and the multicast group ranges supported by the first nodes when the three-layer multicast group information is received, and generating the bidirectional multicast distribution trees for the flooding trees corresponding to the various three-layer multicast groups according to the three-layer multicast group information. The root addresses of the first nodes are transmitted by the first nodes by means of flooding. The three-layer multicast group information is transmitted by edge nodes by means of flooding. The method, the device and the system have the advantage that the problem of complexity in operation and maintenance due to the fact that a PIM (protocol independent multicast) routing protocol and a unicast routing protocol which is an IGP (interior gateway protocol) need to be simultaneously operated and maintained in multipoint-to-multipoint multicast scenes can be solved.
Owner:HUAWEI TECH CO LTD

Oil-free compressor used in locomotive

The invention belongs to the technical field of air compressors, relates to an oil-free compressor used in a locomotive, in particular to an eccentric block-connecting rod reciprocating piston total oil-free lubricated compressor. The oil-free compressor comprises a motor, cylinders, a piston connecting rod assembly, an air valve assembly, cooling fan and the like, wherein, two cylinders are symmetrically arranged above and below a motor shaft, and can also be arranged at the left and the right of the motor shaft, and the two cylinders are coaxial. Connecting rods are sheathed on the motor shaft by a radial ball bearing and an eccentric block, small top end of each connecting rod is provided with two needle roller bearings with an one-side sealed structure, and a crank-connecting rod mechanism drives a piston to realize reciprocating motion in the cylinders. An air inlet valve, a valve plate and an air outlet valve are arranged between the cylinders and cylinder caps, and the valve plate is of a flat-sheet structure, and is provided with an inlet flow channel and an outlet flow channel. The cylinder caps are provided with air inlet chambers and air outlet chambers. The oil-free compressor has the advantages of oil saving, environmental protection, and simple operation and maintenance.
Owner:HEFEI GENERAL MACHINERY RES INST

Equipment operation and maintenance method and apparatus thereof

The invention, which relates to the communication field, discloses an equipment operation and maintenance method and an apparatus thereof. Because it is difficult for operation and maintenance personnel to contact with the communication equipment to be operated and maintained, the operation and maintenance is performed very inconveniently. By using the method and the apparatus of the invention, the above problem can be solved. The method provided in the invention comprises the following steps that: communication equipment receives an operation and maintenance request message sent by a user terminal, verifies validity of the user terminal according to the operation and maintenance request message and determines whether the user terminal possesses an operation and maintenance authority; after the user terminal is determined to possess the operation and maintenance authority, wireless network connection is established between the equipment and the user terminal so that the equipment can acquire an operation and maintenance command sent by the user terminal through the wireless network and execute an operation and maintenance operation. The method and the apparatus are suitable for the communication field and can be used to perform the operation and maintenance to the communication equipment.
Owner:HUAWEI TECH CO LTD

System and method for power line inspection

The invention provides a system and a method for power line inspection. The system comprises a laser radar system mounted on an unmanned aerial vehicle. Real point cloud data is obtained and processedby the laser radar system mounted on unmanned aerial vehicle so as to provide a data foundation for power line monitoring personnel. The system further comprises a three-dimensional measurement and analysis module. The three-dimensional measurement and analysis module is used for realizing distance measurement and area measurement of any point on the line; measuring coordinate and elevation of each point of the power line, spatial distance between any two points and elevation of any point directly and accurately; and measuring interphase distance of power lines accurately, so as to provide aprecise scale for the manufacturing and mounting of spacer. According to the system and the method for power line inspection, the invention has the advantages that the high-precision laser point cloudand the high-resolution digital image can be rapidly acquired, the operation mode and technical advantages that are not possessed by the traditional mapping approaches are brought to whether the design selecting of the trend of the to-be-built line or the dangerous point inspection of the existing line, line asset management and various professional analysis.
Owner:SHANGHAI HUACE NAVIGATION TECH

High temperature sliding wear and thermal contact fatigue testing machine for material

The invention is a tester for high temperature sliding abrasion and thermal contact fatigue material, belonging to the technical field of material processing and friction and abrasion testing, comprising friction auxiliary, pressure regulator, heater, and lubricating device, where the friction auxiliary comprises speed reducing motor, variable frequency speed regulating motor, supporting seat, shaft coupler, distribution gear box, universal connection shaft, machine frame, top friction auxiliary system, bottom friction auxiliary system, and friction piece, where the top friction auxiliary system comprises rotating shaft, bearing base, pressure plate, and top friction piece, the bottom friction auxiliary system comprises right and left rotating shafts, clamping chuck, bottom friction piece and bearing base, the pressure regulator comprises two groups of lift hydraulic cylinders, hydraulic pump, pressure sensing instrument and displaying instrument, the heater comprises induction heating coil, and water cooled system, the lubricating device comprises nozzle, and oil feeding system, the hydraulic system comprises electromagnetic switched electromagnet, and electric contact relay. The advantages of the invention lie in that: the equipment is simple in structure, the number of parts is small, the efficiency is high and the cost is low and it is applied to scientific research and production field simulation.
Owner:UNIV OF SCI & TECH BEIJING

Ceramic catalytic filter element for flue gas purification and flue gas desulfurization and denitrification integrated dust removal method

The invention relates to a ceramic catalytic filter element for flue gas purification and a flue gas desulfurization and denitrification integrated dust removal method. The ceramic catalytic filter element is prepared from the following steps that a microporous alumina ceramic filter tube with a pore diameter of 40-80 microns is taken as a matrix; the matrix is immersed in a mixed sol made of zincacetate, and after the matrix is impregnated under a negative pressure, the matrix is roasted to obtain a modified matrix modified by zinc oxide; an equal volume impregnation method is adopted, and the modified matrix is impregnated with an mixed oxalic acid solution containing ammonium metavanadate and ammonium metatungstate, so that total loading mass of V2O5 and WO3 in pores of the matrix reaches 4.0%-6.0% to obtain an active matrix; the active matrix is immersed in a mixed sol made of Al2O3-SiO2-TiO2, the active matrix is dried and roasted after the active matrix is taken out, and a densefilm with a thickness of 0.2-0.6 millimeter and a pore diameter of 1-10 microns is formed on the outer surface of the active matrix to obtain the ceramic catalytic filter element. A denitrification catalyst of the ceramic catalytic filter element has the advantages of being strong in load, high in denitrification efficiency, long in service life and applicable to popularizing and using.
Owner:济南玉泉生物发电有限公司

Method and device for changing ozone addition sequence in microbubble ozone-coagulation-air floatation process

The invention discloses a method for changing an ozone addition sequence in a microbubble ozone-coagulation-air floatation process. The method comprises the following steps of changing the ozone addition sequence in a system pipeline switching way according to water quality characteristics of raw water, namely switching ozone addition before coagulation and ozone addition after coagulation; when the raw water contains abundant non-humus substances, performing ozone addition before coagulation, and when the raw water contains abundant humus substances, performing ozone addition after coagulation. The invention also provides a device for changing the ozone addition sequence in the microbubble ozone-coagulation-air floatation process. The ozone addition sequence is changed by switching two paths of branch pipes on a return pipe, namely ozone addition before coagulation and ozone addition after coagulation are switched. According to the method and the device, sewage is efficiently and deeply treated by virtue of microbubble ozone oxidation, coagulation and air floatation separation, and the ozone addition sequence can be changed according to different water quality characteristics of the raw water, so that the sewage is pertinently deeply treated, and the removal of organisms and suspended matters is ensured.
Owner:SHAANXI URSTAR ENVIRONMENTAL SCI & TECH

Device for testing power frequency follow current intercepting capability of lightning protection device

The invention discloses a device for testing the power frequency follow current intercepting capability of a lightning protection device. The device comprises a power frequency oscillation circuit, a high-voltage impact circuit, a mechanical linkage device, a sampling resistor and a voltage distributing device. The power frequency oscillation circuit comprises a power frequency inductor, a first sphere gap and a power frequency capacitor, wherein the power frequency inductor, the first sphere gap and the power frequency capacitor are sequentially connected. The high-voltage impact circuit comprises a waveform adjustor, a second sphere gap and an impact capacitor, wherein the waveform adjustor, the second sphere gap and the impact capacitor are sequentially connected. The power frequency inductor, the high-voltage impact circuit and the voltage distributing device of the power frequency oscillation circuit are connected with two connecting-in ends respectively in parallel, and one connecting-in end is further connected with the sampling resistor in series. The mechanical linkage device is further connected with the first sphere gap and the second sphere gap, the connecting-in ends are used for being connected with the lightning protection device to be tested. The mechanical linkage device is used for controlling the discharging moment of the power frequency oscillation circuit and the discharging moment of the high-voltage impact circuit by adjusting the distance between the first sphere gap and the second sphere gap and controlling the discharging moment of the high-voltage impact circuit at the set phase moment of the power frequency oscillation circuit. According to the scheme, the test success rate can be improved.
Owner:GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD

Full-automatic online cantilever wrapping machine

The invention discloses a full-automatic online cantilever wrapping machine which comprises a roller conveyor, a climbing mechanism, a rack, a rocker arm driving device, a membrane frame lifting device, a coping mechanism, a film membrane frame device, a pearl cotton membrane frame device, an automatic film twining and breaking mechanism and an automatic pearl cotton twining and breaking mechanism, wherein the climbing mechanism is arranged under the roller conveyor, and the rocker arm driving device is arranged at the upper part of the rack; the rocker arm driving device is arranged on one side of the rocker arm driving device, and the film membrane frame device and the pearl cotton membrane frame device are respectively arranged on the membrane frame lifting device; and the coping mechanism is arranged on a rotary disk of the rocker arm driving device. The full-automatic online cantilever wrapping machine is combined with electrical automation control through a specially-made wrapping machine wrapping machine structurally and realizes automatic packaging of a packaging film and pearl cotton, and the number of layers of a wrapping film and the number of layers of a stretch film can be set according to accurate actual demand. The full-automatic online cantilever wrapping machine has a reasonable structure, improves the operational performance of equipment, shortens the time delayed due to equipment instability, and improves the production efficiency.
Owner:DALIAN JIALIN EQUIP MFG

Safety state expression method and system based on access relation

InactiveCN107395461AImprove security attributesImprove usabilityData switching networksSecure state
The embodiment of the invention discloses a safety state expression method and system based on access relations. The safety state expression method and system are applied to improvement of security attributes of access nodes and access relations, so that the straightening availability of the access relations is improved, and the operation and maintenance are simplified. The embodiment of the method comprises the steps that all access relations are collected; the access nodes in the access relations are determined; the security attributes of the access nodes are determined, and the security attributes of the access nodes are expressed through first characteristics; the security attributes of the access relations are determined, and the security attributes of the access relations are expressed through second characteristics; through lines and arrows, the access nodes are connected, the visual access relations are formed, the lines express the access relations, and the arrows express access directions. The embodiment of the invention further provides the safety state expression system based on the access relations. The system is applied to improvement of the security attributes of the access nodes and the access relations, so that the straightening availability of the access relations is improved, and the operation and maintenance are simplified.
Owner:SANGFOR TECH INC

Electrode bio-membrane reactor capable of synchronously removing nitrate and hexavalent chromium

The invention discloses an electrode bio-membrane reactor capable of synchronously removing nitrate and hexavalent chromium in water. The electrode bio-membrane reactor comprises a cylindrical reactor body; the bottom of a cylindrical water collector is arranged in an internal fixed block; small holes are formed in the wall of the lower part of the cylindrical water collector; the bottom of a cathode material ring is arranged between the internal fixed block and a middle fixed block; the bottom of an anode material ring is arranged between an external fixed block and the inner surface of the reactor; a water bath jacket is arranged on the outer part of the cylindrical reactor body; a circular plate is arranged on the upper part between the water bath jacket 1 and the cylindrical reactor body; the upper end of the water bath jacket is connected with a cover body in a sealing manner; biological carriers are arranged in the small holes in the surface of the cylindrical water collector movably; and biological carriers are arranged between the cathode material ring and the anode material ring. The reactor can promote the contact between pollutants and microorganisms. The cost is low, and secondary pollution is reduced. The electrode bio-membrane reactor has a simple structure, is convenient to operate and easy to run and maintain. The electrode bio-membrane reactor can synchronously and efficiently remove composite pollution nitrate and hexavalent chromium.
Owner:TIANJIN UNIV

Dynamic monitoring, dredging and drainage guiding method for back water pressure and flow rate of tunnel lining

The invention discloses a dynamic monitoring, dredging and drainage guiding method for the back water pressure and flow rate of a tunnel lining. The dynamic monitoring, dredging and drainage guiding method for the back water pressure and flow rate of the tunnel lining comprises the following steps that seeping water on the back of the lining is guided by a plurality of guide pipes of an annular drainage pipe to enter a main drainage pipe, then enters a longitudinal drainage pipe through the main drainage pipe and is discharged out of a tunnel through the longitudinal drainage pipe; and when the interior of the longitudinal drainage pipe is blocked, a flow rate sensor and a pressure sensor send out an abnormal signal, and then acting force is applied to rotors in a dredging structure to enable the rotors to move in the longitudinal drainage pipe in a fixed direction so as to push sewage in the longitudinal drainage pipe to a sewage discharging structure, so that the longitudinal drainage pipe is dredged. Water pressure and flow rate monitoring systems are distributed in the length direction of the longitudinal drainage pipe and corresponds to the rotors in position, so that regionalmonitoring and dredging of the tunnel are realized, a silted section can be accurately positioned and dredged in time, and operation maintenance of the tunnel can be realized more easily.
Owner:SHANDONG TRAFFIC PLANNING DESIGN INST

Method for recycling naproxen resolution solvent, resolving agent and by-product by overgravitational field

The invention discloses a method for recycling naproxen resolution solvent, resolving agent and by-product by the overgravitational field. A solution containing a resolution solvent, a resolving agent such as N-n-octylglucamine, and by-product such as L-naproxen and L-naproxen N-n-octylglucamine salt after the separation of D- naproxen N-n-octylglucamine salt is firstly added in a overgravitational revolving bed for recycling resolution solvent, then the residual solution is diluted by water, the pH value is adjusted to 7 to 12, the resolving agent is recycled, the mother liquor is concentrated, the alkali C is added, the D,L- naproxen salt is obtained by the racemization reaction. The method adopts the overgravitational revolving bed to recycle the resolution solvent, the process is simple, the whole process is safe, steady and reliable, the operation and the maintenance are simple, the runing cost is greatly reduced, at the same time the production efficiency is improved; the obtained methanol is uniform, the recovery rate of the resolving agent and the D,L- naproxen salt is high, the obtained resolution solvent, resolving agent and D,L- naproxen salt can be directly reused, thus being resource-saving and having obvious environment benefit and social benefit.
Owner:ZHEJIANG CHARIOTEER PHARMA
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