110results about How to "Strong breaking ability" patented technology

The present invention provides a hydrocracking catalyst having high activity, high medium oil selectivity, catalyst constitute uses amorphous silica-alumina as a carrier, Y type molecular sieve processed by special modification is an acidity component, the molecular sieve has a high crystallinity and a lower cell parameter, a plenty quadric hole, larger surface, in addition, has a small acid center, even distribution, no strong acid center, 70-80% is moderate intensity acid center, 20-30% is weak acid center, and the molecular sieve also has a strong anti-nitrogen ability and better damaging ability, the hydrocracking catalyst using the molecular sieve has a better hydrocracking activity, and a higher medium oil selectivity, and a strong anti-nitrogen ability at the same time. The invention uses heavy hydrocarbon single stage or single stage serial hydrocracking process generate midbarrel oil product, and has better activity and medium oil selectivity.

The invention relates to a hydrocracking catalyst with high activity and high-medium oil selectivity. According to the hydrocracking catalyst, amorphous silicon aluminum is used as a carrier, and a specially-modified Y-type molecular sieve is used as acid component, the molecular sieve has high degree of crystallization and low cell parameters, rich secondary holes, large surface area, less uniformly-distributed acid sites, no strong acid center, and most of medium-strength acid centers, and also has strong nitrogen-resisting performance and better damage capacity; and the hydrocracking catalyst using the molecular sieve has high hydrocracking activity and high middle oil selectivity, and stronger nitrogen resisting capacity. The catalyst provided by the invention is used in the process of producing an intermediate distillate product by adopting a heavy hydrocarbon single-section or one-section hydrocracking process, and has better activity and middle oil selectivity.

The invention relates to a medium oil type hydrocracking catalyst and its preparing process, wherein the catalyst employs non-shaped silicon aluminium as carrying agent, and the particularity modified type Y molecular sieve is used as the acidic component, the molecular sieve possesses high degree of crystallization, low unit cell parameter, strong nitrogen resistant property and good destroying capability. The hydrocracking catalyst employing the molecular sieve has strong nitrogen resistant capacity.

The invention relates to a hydrocracking catalyst with high activity and oil selectivity, which comprises: amorphous alumina silica as carrier; and special modified Y-shape molecular screen as acid constituent that has high crystallinity, low cell parameter, riched secondary pores, large superficial area, belongs to medium strength acid center, and has strong nitrogen-resistant and ring-splitting capacity. This invention has well activity and stability for middle distillate oil in heavy hydrocarbon single-section hydrocracking technique.

The present invention provides a rubber composition for a breaker, which achieves both good fuel economy and good breaking performance while simultaneously having excellent processability, and a pneumatic tire including a breaker produced using the rubber composition. The present invention relates to a rubber composition for a breaker, including: a rubber component that contains a modified natural rubber, the rubber having a phosphorus content of 200 ppm or less; and carbon black and / or a white filler, wherein the rubber composition contains 5% by mass or more of the modified natural rubber based on 100% by mass of the rubber component.

The invention discloses a circuit breaker which comprises a housing, a contact mechanism, an arc extinction system, an operation mechanism and a magnetic tripping mechanism, wherein the contact mechanism comprises a dynamic contact and a static contact; a dynamic contact point is arranged on the dynamic contact; a static contact point is arranged on the static contact; the arc extinction system comprises an arc extinction system chamber; the arc extinction chamber is provided with an arc extinction grid-plate, an arc isolation plate and an arc striking assembly; the arc striking assembly comprises an upper arc striking plate and a lower arc striking plate; the lower arc striking plate is connected with a bimetallic strip; the bimetallic strip is matched with the dynamic contact in a linkage manner; the operation mechanism comprises a handle, a main bracket, a linkage assembly and a lock catch assembly; the lock catch assembly comprises a lock catch and a jump catch; the magnetic tripping mechanism comprises an iron core, a coil and a magnetic yoke; the arc extinction chamber comprises an arc inlet end and an arc outlet end; the arc outlet end is provided with arc outlet shunting partition regions which are a first arc outlet region and a second arc outlet region respectively; and arc guide outlets communicated with the first arc outlet region and the second arc outlet region are formed in the housing. The circuit breaker has the advantages of good breaking capacity, excellent arc extinction effect, safety and reliability.

The invention relates to a double-power-source automatic change-over switch comprising a controller, a change-over device, a contact system, and micro switches. The change-over device comprises a mechanism frame, a motor, a gear reversing assembly, and a change-over assembly. The change-over assembly comprises a transmission disc and two transmission arms. The two transmission arms are each equipped with an energy storage mechanism. A first transmission component and a second transmission component are respectively fixed to the upper end faces of the two transmission arms. The upper ends of the first transmission component and the second transmission component are correspondingly installed on a first moving contact support and a second moving contact support of the contact system. The two transmission arms are respectively arranged at the two sides of the transmission disc. The transmission disc includes two rotating plates and two shifting rods. The two transmission arms are each provided with clamping grooves corresponding to the shifting rods. The shifting rods can slide in the corresponding clamping grooves when rotating along with the transmission disc, and the two shifting rods can drive the corresponding transmission arms to rotate. The double-power-source automatic change-over switch of the invention has the advantages of small size, strong breaking capacity, and stable and reliable performance.

The microwave process of extracting apple polyphenol from apple residue includes soaking crushed apple residue in alcohol solution, extraction, vacuum concentrating and other steps. Apple residue soaked inside alcohol solution is extracted in a microwave equipment of power 100-1000 W to obtain apple polyphenol, and the extracted product may be concentrated liquid or powder for different use. The process utilizes the waste to produce apple polyphenol and reduces environmental pollution. The process has the advantages of short production period, simple operation, low power consumption and high polyphenol yield.

A permanent magnetic contactor and its control device are used in starting switch control devices and engines and switching on and off the master circuit. A permanent magnetic steel is set between two static cores to form a U-like bulk, two iron cores connected in series and in a same polarity, a tower spring supports the framework of the packet, the top of the tower spring is connected with a dynamic core. The output over voltage protection part of said control device is connected with the rectification part, output of which is connected with a low-voltage judgment part the output of which is connected with a shut off executing part and the output of which is connected with the wire packet.

An engine bracket including: an attachment portion provided in a fixing location adapted to be fixed to at least one of the vehicle body and power unit; a bolt hole being formed in the attachment portion so that the attachment portion is fixed to the vehicle body or power unit by a fixing bolt inserted into the bolt hole; and at lease one breaking groove formed at an area located spaced away from the bolt hole so as to extend away from the bolt hole and toward an outer peripheral edge of the attachment portion on at least one of opposite surfaces of the attachment portion in a direction in which the fixing bolt is inserted.

The invention relates to a device (1) for protecting an electric installation against overvoltage comprising at least one protection component (10) provided with means for connecting to said electric installation, means for disconnecting the protection component (10) therefrom which are movable from a closed position to an open position, thereby forming an interstitial space (11) between the disconnecting and connecting means in such a way that an electric arc is formed therein. The inventive device is characterised in that it is provided with means (50) which approaches said electric arc from at least two different directions in order to reduce the cross-section thereof. Said invention is used for protecting against overvoltage.

The invention relates to a quartz sand fuse. The quartz sand fuse comprises an insulation pipe, a first end cover, a second end cover, a first wiring terminal, a second wiring terminal and a fuse body, wherein a cavity is formed in the insulation pipe and axially passes through the insulation pipe, the first end cover is fixedly connected with one end of the insulation pipe, the second end cover is fixedly connected with the other end of the insulation pipe, the first wiring terminal is fixedly connected with the first end cover, the second wiring terminal is fixedly connected with the second end cover, the fuse body is arranged in the cavity, the first wiring terminal and the second wiring terminal are separately and electrically connected with the fuse body, the interior of the insulation pipe is filled with a quartz sand composition, the quartz sand composition wraps the fuse body, and at least one through hole is formed in the pipe wall of the insulation pipe and is communicated with the cavity. The quartz sand fuse has the advantages of high breaking capability, high explosion prevention performance, good stability and high reliability.

The invention relates to an electric meter box, in particular to a power purchase type intelligent electric meter box. The electric meter box comprises a power supply device, an electric meter, a breaker and a terminal, wherein the power supply device is arranged in the box body; the power supply device is connected with the electric meter and the breaker through a current inductor. The electric meter box is characterized in that a signal booster is arranged in an electric meter box body; an indicating part and an interacting platform are arranged on the outer side of an inner door of the box body; a high-receiving sensitivity antenna is arranged outside the box body through a universal joint; the breaker and the terminal are connected with the indicating part; the breaker, the electric meter, the interaction platform and the signal booster are connected with a current-using management terminal; the signal booster is connected with the high-receiving sensitivity antenna; the breaker, the current-using management terminal and the indicating part form an alarming-tripping circuit. The electric meter box has the advantages that equipment is advanced, layout is reasonable, the electric meter box can prevent electric shock, on-site switching on / off is realized, signal boosting is realized, and the function of an interaction platform is realized.

The invention relates to a powder concentrator integrating the functions of scattering, drying and grading into a whole, which mainly comprises a drying area casing, a scattering area casing, a raw material splitting tube, a splitting device, a volute body, a grading rotor, a main shaft and a main bearing bracket. The powder concentrator is characterized in that the drying area casing is in a V-shaped structure, one side of the drying area casing is joined with the volute body, the upper part of the other side of the drying area casing is connected with the scattering area casing which is slantways arranged, and the upper part of the scattering area casing is connected with the raw material splitting tube in which the splitting device is arranged. An eccentric position in the volute body is vertically provided with the grading rotor which is in a conical structure, and a cantilever of the main shaft of the grading rotor is supported on a bearing pedestal on the main bearing bracket. The invention has the advantages of good material adaptability, strong drying and scattering capabilities, high powder concentration efficiency, low pressure loss of a system, small maintenance quantity of equipment, compact and reasonable structure, large adaptability to materials and the like.

A small-scaled breaker used in overcurrent protection and short-circuit protection includes a contact system, an arch extinguishing system, an operation mechanism, a free tripping mechanism, an overcurrent protection system and a short-circuit protection system, etc. An operation handle can actuates the operation mechanism to drive a moving contact in hinge connection to move towards a fixed contact for making circuit. In overcurrent or short circuit fault, the overcurrent protection system or the short-circuit protection system drives the free tripping mechanism to trip, with the circuit disconnected; the operation mechanism lever has an opening, which can be connected with a switchable neutral pole by a shaft, in order to realize simultaneous action of two poles. The upper end of the moving contact can realize the quick make of the moving contact by cooperating with a limiting component. A plurality of single pole small-scaled breakers can be integrated in connection by the handle, the free tripping mechanism and etc, to form the multi-pole small-scaled breaker.

Structure of arc-resistant piece includes an arc-resistant piece with high breaking capacity. Being in use for cutting off electric arc generated when vacuum switch is turned to off, at least one part with small diversion closure value is embedded on upper surface of the arc-resistant piece. The invention also is related to a vacuum switch contactor includes body case, conductive part, conductive bottom, magnetic generation assembly, and the said structure of arc-resistant piece. Perforated notch is setup inside the magnetic generation assembly from up to down. Being inserted to the notch, conductive part with two ends contacts to the conductive bottom and structure of arc-resistant piece respectively. Conductivity of the magnetic generation assembly is lower than conductivities of other parts. Melting point of the body case is higher than melting points of other parts. Features are: high capability of anti fusion welding, high breaking capacity, and low diversion closure value.

The invention provides a circuit breaker. Upon switching on, a wrench is placed at a first position, and a secondary moving contact compresses a first elastic element, and the secondary moving contact and the secondary static contact are in contact, and at the same time, a primary moving contact and a primary static contact are kept disconnected; the wrench is placed at a second position, and the secondary moving contact further compresses the first elastic element, and the secondary moving contact and the secondary static contact are kept connected, and at the same time the primary moving contact and the primary static contact are in contact. A second terminal is connected to a current-carrying plate, and the primary moving contact and the secondary moving contact are connected to the current-carrying plate through a lead. The contact of the circuit breaker takes up small space, has low product cost, low contact electric worn, can interrupt short circuit operation of more than 50 kA on a micro-circuit breaker, which is extremely convenient for applications to special scenarios.

The invention relates to a method for producing an electrical contact material, particularly relates to a method for producing a high-energy rare earth powder alloy electrical contact material. According to the technical scheme provided by the invention, the method for producing a high-energy rare earth powder alloy electrical contact material is characterized by comprising the following steps of: firstly, completely mixing and stirring alumina powder, silver powder, lanthanum powder, graphite powder, molybdenum powder, yttrium powder, boron powder and nickel copper powder; secondly, using anoil press to squeeze and mold the powder, and then sintering the squeezed and molded object into a vacuum high-temperature furnace and then cooling; thirdly, burning the molded object in a high-temperature furnace, then taking out and squeezing the burnt object into a panel shape by using a die on the oil press, and then cooling with cold water, and finally using a machine tool to punch the cooled object into a contact. The invention overcomes disadvantages of the prior art and provides the method for producing an environment-friendly high-energy rare earth powder alloy electrical contact material with low silver content, impact resistance, corrosion resistance, antioxidation, low resistance and good electrical conductivity.

The invention provides a contact of a vacuum arc extinguishing chamber. The contact comprises a first contact and a second contact. The first contact is connected with a first conducting rod, and the second contact is connected with a second conducting rod. An arc ignition contact is arranged on and protrudes out of an end surface of the first contact. The arc ignition contact is connected inside the first conducting rod by a spring. An auxiliary contact is arranged on an end surface of the second contact and is used to cooperate with the arc ignition contact to generate an arc. The invention provides the contact reducing the breakdown field strength, controlling the arcing point, improving the interrupting capability of the vacuum arc extinguishing chamber, and having a low cost.

The invention discloses a selective protection circuit breaker. A main circuit consists of a first wire connection device, a first bimetallic strip, a main contact, an electromagnetic system and a second wire connection device which are connected in series; a branch circuit consists of an auxiliary contact, a current-limiting resistor and a second bimetallic strip which are connected in series; and two ends of the branch circuit are connected in parallel to two sides of a main contact device. An operating mechanism is arranged on the middle upper part of a shell; an auxiliary contact device is arranged on the lower left part of the operating mechanism; the main contact device is arranged on the middle lower part of the shell; the electromagnetic system is arranged on the upper right part of the shell; the first and second bimetallic strips are arranged on the left part of the shell; and the current-limiting resistor is arranged on the upper left part of the shell. The selective protection circuit breaker also comprises a first clapboard and a second clapboard for dividing the shell into a layer A space and a layer B space in the thickness direction; first and second arc extinguishchambers are formed respectively in the layer A space; and the first and second bimetallic strips and an electromagnetic push rod of the electromagnetic system are arranged in the layer B space. The circuit breaker has the advantages of reasonable and compact structural layout, convenient assembly and debugging, high braking capacity and high reliability.

The invention provides a breaker provided with an arc extinguishing mechanism with magnetic blowing and air-blowing functions, and mainly aims at solving the problems of poor breaking capacity and poor arc extinguishing effect due to the fact that the arc extinguishing mechanism of the breaker only has the magnetic blowing function or the air-blowing function. The breaker is characterized by also comprising a magnetic blowing device (4) and a gas production plate (5), wherein the magnetic blowing device (4) and the gas production plate (5) are correspondingly arranged between a static contact (22) and an arc extinguish chamber (3) and are used for guiding an electric arc generated when a moving contact (21) is separated from the static contact (22) to the arc extinguish chamber (3). According to the breaker provided with the arc extinguishing mechanism with the magnetic blowing and air-blowing functions provided by the invention, a magnetic blowing mechanism and the gas production plate are also arranged between the static contact and the arc extinguish chamber; and the electric arc generated when the moving contact is separated from the static contact is guided to the arc extinguish chamber, so that the arc extinguishing efficiency is improved; and the breaking capacity is relatively high.

An arc extinguishing system of a DC contactor comprises two static contacts (1, 1'), a moving contact (2) and at least two permanent magnets; the two static contacts (1, 1') are connected to or disconnected from the two ends of the moving contact (1) to realize ON / OFF of the contactor; and the system is characterized in that the two permanent magnets are installed in a connecting line of the two static contacts (1, 1') and positioned between the two static contacts (1, 1'). The whole arc extinguishing system is small in size, high in disconnecting capability, simple in structure, convenient toassembly, and capable of non-polarity rapid arc extinguishing.

The invention provides a small-sized circuit breaker, comprising a shell, a double-gold sheet, a lock buckle, an arc extinguish chamber, a wiring column, a movable contact, a movable contact bracket and a shaft passing through the movable contact bracket, wherein the double-gold sheet comprises a double-gold sheet fixed end and a double-gold sheet movable end; the small-sized circuit breaker is further provided with a separation plate which is located between the double-gold sheet and an arc striking sheet; the separation plate corresponds to the shell to form a cavity ,and the double-gold sheet is arranged in the cavity. According to the small-sized circuit breaker, the double-gold sheet is not affected by the heating of other elements; in addition, an magnetic field generated by electric arcs on the double-gold sheet is separated from the magnetic field generated by the electric arcs of the arc striking sheet and the magnetic fields do not interfere with each other, so that the arc-striking effect of the arc striking sheet is good, and the breaking performance of the circuit breaker is good.

The invention discloses a rotor device of a hydrapulper. Main contents include that a driving pulley is arranged on an output shaft of a driving motor, a driven pulley is arranged on a rotor through key joint, and a belt is arranged on the driving pulley and the driven pulley. The lower end of the rotor is arranged in a bearing pedestal through a lower bearing group, and the upper end of the rotoris arranged in the bearing pedestal through an upper bearing group. A lower transparent cover is arranged on a bottom surface of the bearing pedestal, and the lower transparent cover is abutted against the lower bearing group. The top end of the bearing pedestal is positioned in a mounting hole on the bottom surface of a machine base. Blades are arranged on the rotor. A connecting shaft is arranged on the top end of the rotor. A slurry receiving plate is arranged on the connecting shaft. A sleeve is arranged on the connecting shaft. The sleeve is arranged in a mounting hole on the machine base through a mounting base. The rotor device is advantaged by good crushing ability, short repulping time, and convenient operation maintenance, and the device just has a dissociation function on a sizing agent and does not has a cut-off effect. The device improves repulping effect of the rotor, and reduces power consumption of equipment.

The invention discloses a miniature fuse, which consists of two wiring terminals, a substrate, a melt and an arc-extinguishing glass layer, wherein the melt is positioned on the surface of a ceramic sheet; the two wiring terminals are respectively electrically connected with the two ends of the melt; the arc-extinguishing glass layer, which covers the surface of the melt, is an arc-extinguishing glass sheet which consists of borosilicate lead glass; a plurality of micro-nano holes are formed on the surface of the arc-extinguishing glass sheet, which is contact with the melt; the melt is formed by electric conductive paste containing spherical or approximately-spherical metal particles through screen printing; the metal particles are 80 to 100 nm in diameter; hollow areas are arranged in the central areas in the metal particles; the micro-nano holes are 20 to 500 nm in diameter; the intervals between adjacent micro-nano holes are one to five times of the hole diameters of the micro-nano holes; and the hole depths of the micro-nano holes are one to 10 times of the hole diameters. The miniature fuse disclosed by the invention can effectively avoid the phenomenon of arc discharge and provides high insulation impedance.

This invention relates to a magnet driven low pressure air switch with manual braking, in which, a leading-in terminal is connected with a static contactor, the static contactor and a moving contactor are set in an arc suppressing chamber, a primary wire is connected with the moving contactor and a leading-out terminal, the frame of the moving contactor is connected with the extension end of a moving iron core of the magnet unit by a connection bar, the magnet unit and the moving contactor frame are fixed on a localizing frame, a connection terminal of a magnet unit is connected with a control circuit, the other end of a spanner extending out of the shell of a dissociating end is fixed on the frame, which is used in on-line protection control, automatic test of electric faults and remote close and automatic braking in the distribution system.

The invention discloses a cadmium-oxygen-silver multicomponent electrical contact material and a preparation method thereof. The material comprises the following components by weight percent: one of 5-12% of CdO, 1-5% of ZnO or 1-5% of SnO2 and the balance Ag. The invention adopts multicomponent reinforcement in the raw material and combines the advantages of all the reinforced phases so as to ensure that the material not only maintains the advantages of Ag-CdO such as good fusion welding resistance, strong breaking ability, low temperature rise and the like, but also has lower dosage of toxic cadmium, better electric arc burning loss resistance property and obvious silver-saving effect, and can replace cadmium-oxygen-silver to be used in the high power relay so as to reduce the environmental pollution caused by the production and application processes of the cadmium-oxygen-silver contact.

The invention provides a permanent magnet vacuum arbitrary phase-change switch which is composed of a switch pedestal (1), an A permanent magnet operating mechanism (2), a B permanent magnet operating mechanism (3), an A vacuum arc-extinguishing chamber (4), a B vacuum arc-extinguishing chamber (5), a C vacuum arc-extinguishing chamber (6), a D vacuum arc-extinguishing chamber (7), an A crank arm (8), a B crank arm (9) and an intelligent controller (10). Advantages of the permanent magnet vacuum arbitrary phase-change switch are that the permanent magnet vacuum arbitrary phase-change switch is maintenance-free, high in insulating property, high in voltage withstanding, small in size, high in breaking capacity, high in on-off current, long in the service life and safe and reliable. The permanent magnet mechanisms are maintained without power consumption so as to be energy-saving and environment-friendly. All the vacuum arc-extinguishing chambers are affected by the crank arm movement structure and a conductive bar commonly so that mechanical interlocking is formed, and single-phase output is safe and reliable. The control system is intelligent and easy to install.

The invention discloses a switching device with lever ratio, comprising a shell, a rocker arm, a rotating shaft, a contact support, a moving contact bridge and a fixed contact, wherein the rocker arm is rotatably arranged on the rotating shaft; one end of the rocker arm is a driving end and the other end of the rocker arm is a driven end; the contact support is in contact connection with the driven end of the rocker arm driving the contact support to move; the side of the contact support, which is close to the fixed contact, is provided with the moving contact bridge; and the lever ratio of the distance b between the driven end of the rocker arm and the center of the rotating shaft and the distance a between the driving end of the rocker arm and the center of the rotating shaft is more than 1. The switching device has the beneficial effects of strong breaking capability, long service life, simple structure, low cost and convenience in installation.