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43results about How to "Avoid accidental impact" patented technology

Method for inspecting current loop of main transformer sleeve by using zero lifting flow

InactiveCN102565617ASolved the problem of missing booster generator setsAvoid accidental impactCurrent/voltage measurementElectrical testingReference vectorSecondary loop
The invention discloses a method for inspecting a current loop of a main transformer sleeve by using zero lifting flow. The method comprises the following steps of: correspondingly connecting an A phase loop, a B phase loop and a C phase loop which are output by a three-phase voltage regulator to an A phase loop, a B phase loop and a C phase loop of a primary three-phase loop on the 110kV side of a main transformer by using a test wire respectively; inspecting a secondary current amplitude value and a phase angle of a sleeve type current transformer on the 110kV side and current of a neutral wire by using voltage UA of a primary A phase loop as a reference vector at an on-site terminal box and a control chamber screen cabinet; and finally, inspecting a secondary current amplitude value and a phase angle of a sleeve on a 220kV side and the current of the neutral wire by using the voltage UA of the primary A phase loop as the reference vector at the on-site terminal box and the control chamber screen cabinet, and analyzing and judging data to judge whether the loops are correct or not. By the method, the polarity, the transformation ratio and the wiring condition of an alternating current loop of the main transformer sleeve can be inspected by the zero lifting flow to find a secondary loop connecting wire which is not connected or is connected by mistake.
Owner:YUNNAN POWER GRID

Cutting torch nozzle follow-up protection mechanism

The invention discloses a cutting torch nozzle follow-up protection mechanism which comprises a cutting torch support, a positioning sleeve, a return spring, a follow-up support composed of a bushing and a semicircular cap, a cap and a support wheel structure. The positioning sleeve is fixed on the cutting torch support, a threaded hole is drilled at the front end of the positioning sleeve, a positioning screw is mounted in the hole, the bushing of the follow-up support sleeves a cutting torch and is inserted into the positioning sleeve, a thread matched with a positioning round nut is tapped at the tail of the bushing of the follow-up support, the return spring sleeves the bushing of the follow-up support, the rear end of the return spring is butted against the end face of the positioning sleeve while the front end of the same is butted against the end face of the semicircular cap of the follow-up support, support wheels are hinged to pin shafts through a stop plate and can rotate freely around the pin shafts, and the support wheels and the caps are connected with the semicircular cap of the follow-up support. The cutting torch nozzle follow-up protection mechanism is simple and compact in structure, distance between the support wheels and a cutting torch nozzle is adjustable, and safety of the cutting torch nozzle is guaranteed to the greatest degree under the condition that complete cutting is ensured.
Owner:YANSHAN UNIV

Alarm device preventing storage battery of vehicle from being stolen and control method thereof

Provided is an alarm device preventing a storage battery of a vehicle from being stolen. The alarm device comprises an electric circuit part and an air circuit part. The electric circuit part comprises the storage battery and a normally open solenoid valve. The positive electrode end of the storage battery is connected with one end of a horn button, the other end of the horn button is connected with the positive electrode end of the normally open solenoid valve, and the negative electrode end of the normally open solenoid valve is connected with the negative electrode end of the storage battery. The air circuit part comprises an air reservoir and an air horn. The air reservoir is communicated with an air inlet of the normally open solenoid valve, and an air outlet of the normally open solenoid valve is communicated with the air horn. The alarm device further comprises a normally closed solenoid valve. The positive electrode end of the normally closed solenoid valve is connected with the positive electrode end of the storage battery, and the negative electrode end of the normally closed solenoid valve is connected with the negative electrode end of the storage battery; an air inlet of the normally closed solenoid valve is communicated with the air reservoir, and an air outlet of the normally closed solenoid valve is communicated with the air horn. The alarm device not only is good in anti-theft effect but also does not affect normal operation of the vehicle.
Owner:DONGFENG COMML VEHICLE CO LTD

Combined type anti-theft system for storage battery, and control method of combined type anti-theft system

The invention discloses a combined type anti-theft system for a storage battery. The anti-theft system comprises an electric circuit part, a gas circuit part, a normally closed electromagnetic valve and a gas cut-off valve, wherein the electric circuit part comprises a storage battery and a normally open electromagnetic valve; the positive pole end of the storage battery is connected with one end of a horn button; the other end of the horn button is connected with the positive pole end of the normally open electromagnetic valve; the negative pole end of the normally open electromagnetic valve is connected with the negative pole end of the storage battery; the gas circuit part comprises a gas storage cylinder and a gas horn; the gas storage cylinder is communicated with the gas inlet of the normally open electromagnetic valve; the exhaust opening of the normally open electromagnetic valve is communicated with the gas horn; the positive pole end of the normally closed electromagnetic valve is connected with the positive pole end of the storage battery; the negative pole end of the normally closed electromagnetic valve is connected with the negative pole end of the storage battery; the gas inlet of the normally closed electromagnetic valve is communicated with the gas storage cylinder; the exhaust opening of the normally closed electromagnetic valve is communicated with one end of the gas cut-off valve; the other end of the gas cut-off valve is communicated with the gas horn. The combined type anti-theft system is good in theft preventing effect, and does not influence the normal running of a vehicle.
Owner:DONGFENG COMML VEHICLE CO LTD

Novel noise reduction box and control method thereof

PendingCN111599334AIsolate the transmission of vibrationAvoid passing noise directlyInstrument housingSound producing devicesEngineeringStructural engineering
The invention discloses a novel noise reduction box and a control method thereof. The novel noise reduction box comprises a box body main body, a box body support, an equipment mounting frame, a telescopic device mounting frame and a telescopic device; the equipment mounting frame is movably arranged above a bottom plate of the box body main body, and the equipment mounting frame penetrates through a through hole in a clearance manner and is arranged towards the ground; the telescopic device mounting frame is arranged below the bottom plate; the telescopic device is arranged between the telescopic device mounting frame and the bottom plate; in the first state, the box body support is supported on the ground, and a gap is formed between the equipment mounting frame and the bottom plate; inthe second state, the telescopic device jacks up the box body main body, the box body support leaves the ground, and a limiting structure is clamped on the bottom plate or a support limiting hole so as to fix the equipment mounting frame. Through the structures of the equipment mounting frame, the telescopic device, the telescopic device, the telescopic device mounting frame and the like, the vibration equipment in the box body main body is separated from the box body main body, so that the vibration of the box body main body is reduced, and the purposes of facilitating transportation and reducing vibration and noise of the whole equipment are fulfilled.
Owner:上海咨盛压缩机有限公司

Improved anti-collision device used in hoisting process of large-scale multi-corner-angle cantilever truss

PendingCN113401797AAvoid accidental impacts on stone curtain wallsNovel structureNon-rotating vibration suppressionBuilding material handlingWall plateCantilever
According to an improved anti-collision device used in the hoisting process of a large multi-corner-angle cantilever truss, 5-15 rollers are movably connected in series in a U-shaped groove of a front groove plate, and the periphery of each roller is wrapped with a rubber sleeve; the rollers and the rubber sleeve are combined to form a runner wheel mechanism; 16 guide cylinders are fastened on the back face of the front groove plate in a welded mode, a rubber block is arranged in each guide cylinder, the 16 guide cylinders are arranged in four rows and four columns to form a cylinder matrix, 16 guide rods are fastened on the front side face of a rear wall plate in a welded mode, the 16 guide rods are also arranged in four rows and four columns to form a rod matrix, and the cylinder matrix can correspond to the rod matrix; each guide cylinder can correspondingly sleeve one guide rod so as to form a guide mechanism; the periphery of each guide mechanism is sleeved with a telescopic spring; and the front groove plate and the rear wall plate are connected through a spring square matrix and combined to form the telescopic anti-collision mechanism. The anti-collision device has the advantages of being novel in structure, ideal in anti-collision effect and high in practicability.
Owner:FUJIAN MINNAN CONSTR ENG +1

Anti-hydrogen packaging bag, manufacturing method thereof and combined package

The invention relates to the technical field of packaging materials, in particular to an anti-hydrogen packaging bag, a manufacturing method thereof and combined package. The anti-hydrogen packaging bag comprises a polyethylene glycol terephthalate layer, an aluminum film layer, a nylon layer and a polyethylene layer which are arranged from outside to inside. The manufacturing method for the anti-hydrogen packaging bag comprises the following steps of: preparing raw materials, wherein the raw materials are polyethylene glycol terephthalate sheets with thicknesses of 10-15 microns, aluminum film sheets with thicknesses of 6-10 microns, nylon sheets with thicknesses of 15-20 microns, and polyethylene sheets with thicknesses of 100-120 microns; performing dry-type compounding, wherein the polyethylene glycol terephthalate sheets, the aluminum film sheets and the nylon sheets are separately bonded by a bonding agent through a dry-type compounding method; and performing hot-melt compounding, wherein the nylon sheets and the polyethylene sheets are bonded through a hot-melt compounding method. According to the anti-hydrogen packaging bag, the manufacturing method thereof and the combinedpackage disclosed by the invention, mouthfeel, flavor, a quality guarantee period and a hydrogen permeation rate smaller than or equal to 2 cm<3>/(m<2>24h.0.1MPa) of hydrogen-containing food are guaranteed.
Owner:韩城维康水科技有限公司

Automatic instrument device

The invention relates to the technical field of automatic instruments, and discloses an automatic instrument device which comprises a liquid level meter, a flange and a blow-down valve, the flange islocated at the bottom of the liquid level meter, the blow-down valve is located at the lower end of the flange, connecting plates are fixedly arranged on the two sides of the upper end of the liquid level meter, and U-shaped plates are fixedly arranged at the other ends of the two connecting plates. U-shaped protection plates are arranged on the two sides of the liquid level meter and located below the two U-shaped plates, the U-shaped protection plates are arranged on the outer side of the liquid level meter in a wrapping mode, vertical plates are fixedly arranged on the front sides of the two U-shaped protection plates, connecting blocks are fixedly arranged at the bottoms of the two vertical plates, connecting mechanisms are arranged in the two connecting blocks, and elastic return mechanisms are arranged in the two U-shaped plates. Damping mechanisms are arranged on the sides, away from the liquid level meters, in the two U-shaped protection plates. According to the automatic instrument device, the liquid level meter can be effectively wrapped and protected.
Owner:西安安迈工业自动化技术有限公司
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