87results about "Explosion operated switches" patented technology

A shorting switch (2) includes a vacuum switch (4) having fixed and movable contact assemblies (8, 10) and a driven member (26). A spring cover tube (38) and bushing (36) mount the driven member (26) for linear movement along a path substantially parallel to a longitudinal axis of the movable contact assembly (10). The driven member (26) moves the movable contact assembly (10) between open and closed circuit positions. A compression spring (40) has a compressed state and a released state, which moves the driven member (26) and movable contact assembly (10) to the closed circuit position. A release bolt (32) has an opening (68) therein and is coupled to the driven member (26) to normally maintain the compression spring (40) in the compressed state. A charge (60) is disposed in the opening of the release bolt (32) and is actuated to fracture the release bolt and release the compression spring (40) to the released state. First and second terminals (16, 22) are respectively electrically interconnected with the fixed and movable contact assemblies (8, 10).

A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end. A capacitor engages and extends between the first and second terminals in the internal chamber. A sparkgap is electrically parallel the capacitor between the first and second terminals. A cartridge with an explosive charge is positioned in the internal chamber, and the cartridge is electrically parallel the capacitor and electrically in series with the sparkgap.

A door-use feed protector and a circuit assembly arranging structure using the same is provided. The door-use feed protector includes a protector body to accommodate a circuit assembly in a curved state in a door and a circuit assembly holding portion provided on an outer wall of the protector body so as to hold a portion of the circuit assembly outside the protector body. The circuit assembly holding portion may be an auxiliary protector. The auxiliary protector has at least a pair of holding walls facing each other. The holding wall is provided with a resilient holding piece or an engagable cover for preventing the circuit assembly from protruding. The circuit assembly is introduced in the protector body of the door-use feed protector, and a portion of the circuit assembly led out of the protector body is held by the circuit assembly holding portion and is arranged toward an auxiliary in the door.

A thermal overload mechanism for providing protection to tip and ring conductors in a telecommunications system in the event of a power cross occurrence of telephone lines with power lines. The thermal overload mechanism includes a clip having front and rear spring members dimensioned for seating about a spacer element. The spacer element includes one or more recesses defined therein for accommodating securement of solid state devices. The recesses formed in the spacer elements contain a breachable membrane or wall which is breakable in the event the membrane temperature exceeds a predetermined temperature such as a temperature occurring in the event of a power cross situation. A contact configured for seating within the recess between the membrane and solid state device is provided for maintaining electrical contact with the tip and ring wires. During a power cross situation, high current causes the temperature of the solid state devices increase, thereby causing a breach of the membrane and providing a direct grounding path for the tip and ring wires through the rear spring and common ground.

An appliance assembly includes an appliance and a thermal assembly. The thermal assembly includes a housing attached to the appliance, a temperature sensing device carried by the housing and electrically coupled with the appliance, and a thermal fuse carried by the housing and electrically coupled with the appliance, the thermal assembly being a modular assembly and thereby configured for being, as a single unit, attached to and detached from the appliance.

A structure for installing a lightning arrester between the cross arm mounted to the upper end of an electric pole and a power line is disclosed. A dead end clamp, the lightning arrester and an insulation reinforcing insulator are connected in series, an end of the insulation reinforcing insulator is connected to the cross arm by a shackle, a disconnector is connected to the voltage outlet portion of the lightning arrester, a grounding wire for diverting abnormal voltage to the ground is connected to the disconnector, and an insulation cover surrounds the dead end clamp and the voltage inlet portion of the lightning arrester.

The invention relates to a current limiting fuse used during short circuit fault of a power grid, in particular to an arc striking type mixing current limiting fuse for overcoming the defects of low current limiting capability or high cost, large size, and the like of the traditional fuse. The arc striking type mixing current limiting fuse comprises a rapid fuse. The arc striking type mixing current limiting fuse is characterized by also comprising a high-speed current-carrying isolator and an arc striking device for striking the high-speed current-carrying isolator. The rapid fuse is connected in series with the arc striking device after connected in parallel with the high-speed current-carrying isolator. On one hand, the invention is used for comprehensively optimizing and designing thearc striking device, the high-speed current-carrying isolator and the rapid fuse, can maintain lower power consumption at kiloampere grade rated current, be rapidly cut off in short-circuit current and transfer the current to a branch circuit of the rapid fuse; and on the other hand, compared with an electronic control type mixing current limiting fuse, the scheme not only improves reliability but also greatly reduces the size and the cost by directly utilizing the heat effect of the short-circuit current as fault judging data and the striking condition.

Method for identifying one or more fracture clusters in an area of interest. In one implementation, the method may include determining a first inclination of each fracture cluster using borehole data. The first inclination refers to a first average angle with respect to horizontal. The method may further include extracting a first set of fracture clusters from seismic data using a filter based on the first inclination and a strike azimuth of each fracture cluster.

A switch module having a surge absorber is disclosed. In one embodiment according, the switch module includes a casing having an input terminal, an output terminal and an auxiliary terminal, a switch unit installed in the casing for connecting or disconnecting the input terminal to the output terminal, and a surge absorber installed in the casing and between the output terminal and the auxiliary terminal. Therefore, the switch module is capable of absorbing a voltage spike from the input terminal and thus shielding the circuitry of the switch module from damage.

The invention discloses an explosion switch based on multi-side energy collecting jet flow. The switch belongs to a normally-closed one-time switch and comprises an exploder, an access device and a protection device. A conductor is cut through the energy collecting jet flow, the explosive energy utilization rate is increased, the disconnection time is shortened, meanwhile, a method combining the axial energy collecting jet flow and the circumferential energy collecting jet flow is adopted, the two ends of the disconnected conductor are spaced by a long distance, and the danger that the disconnected switch is broken down again under the high voltage condition can be effectively avoided. In addition, the conductor is not subjected to any weakening treatment, so that the conductor is excellent in mechanical performance and can be suitable for various adverse working conditions.

An appliance assembly includes an appliance and an appliance member. The appliance includes a wall defining a plurality of holes. The appliance member is carried by the appliance. The appliance member includes a housing which includes a snap-fit arrangement coupled with the appliance. The snap-fit arrangement includes a first plurality of ears and a second plurality of ears, the first and second plurality of ears snap-fittingly engaging the plurality of holes.

A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end. A capacitor engages and extends between the first and second terminals in the internal chamber. A sparkgap is electrically parallel the capacitor between the first and second terminals. A cartridge with an explosive charge is positioned in the internal chamber, and the cartridge is electrically parallel the capacitor and electrically in series with the sparkgap.

A current isolation contactor includes a first contact, a second contact movable between an engaged position with the first contact and a disengaged position away from the first contact, and a cam being movable between a biased position wherein the second contact is in the engaged position with the first contact and an unbiased position wherein the second contact is able to move to the disengaged position away from the first contact. A retaining pin retains the cam in the biased position. A drive system is operatively associated with retaining pin to move the retaining pin, allowing the cam to rotate to the unbiased position such that the second contact is moved to the disengaged position.

The invention discloses a new type explosion breaker. The insulating barrel is installed on the underpan and on the barrel there is a upper disc with a hole in the center. There is a hole in the center of the underpan. The lower conducting ring is set around the hole. The lower conducting ring is set along the inner edge of the insulating barrel. There are a upper and a lower contactor between the upper and the lower conducting ring. Between two contactors is a insulating block in which sets detonator. The water-cooling ring is on the upper conducting ring. The bush presses on the water-cooling ring. The bush and the upper disc are connected. The structure is novel; the rated drop-out current is strong; the drop-out speed is fast; the drop-out reliability is nice. The new type explosion breaker is not only applied in the nuclear fusion device as the reserved switch, but in the electric system it has broad application prospect as the protective switch.

The invention refers to a solenoid with a coil which can be current-fed, the resulting magnetic field moving an armature. The armature acts, if necessary, on an actuator. Furthermore, the solenoid has at least one pyrotechnic actuation for the armature or the actuator.

The invention discloses a protective device for high-voltage power equipment. The existing protective tubes for power equipment can not meet the requirement of the high-voltage power equipment for overcurrent protection, so the power equipment such as transformers, generators and the like is damaged from time to time. The protective device comprises an insulating spacer bar arranged between left and right power supply buses, wherein metal leads are connected between the two ends of the insulating spacer bar; at least one end of the two ends of the insulating spacer bar is provided with a disconnector which can flick the metal leads in the presence of fault current; one end of the disconnectors is connected with the insulating spacer bar via fixing devices and the other end of the disconnectors is connected with the metal leads; and an insulating support bar for preventing the metal leads from being flicked down and grounded is fixedly connected with the lower parts of the metal leads. The protective device has the following beneficial effects: the disconnectors are used for flicking the metal leads when the power supply circuits have fault current, and the leads droop under the actions of impact wave and gravity and break away from the circuits, thus achieving the aims of absolute arc extinction and fault stop, realizing overcurrent protection of the power equipment and filling in the gap in the field of overcurrent protection of the high-voltage power equipment.

A pyrotechnic circuit breaker comprising: - a casing (1) with at least one cutoff chamber (7, 7'), - at least one electric conductor (2), - at least one punch (4) arranged to cut said at least one electric conductor (2), - at least one pyrotechnic actuator, - an insert (31) overmoulded over said at least one electric conductor (2), characterised in that the casing (1) comprises a first casing portion and a second casing portion, with at least one sealing means between the insert (31) and one of the first casing portion and / or second casing portion in order to seal said at least one cutoff chamber (7, 7').

The invention discloses an explosive type DC circuit breaker based on an electromagnetic pulse, which comprises a pulse magnet, a main contact and a support ring of the main contact. By exerting pulse current to the pulse magnet to create a relatively strong magnetic field and induct a vortex on the surface of the main contact. The vortex and the pulse magnetic field interact with each other to generate an electromagnetic pulsing force along the radial outward direction to swiftly pull off the V section on the main contact. The circuit breaker abandons the traditional schemes like the dynamite explosion or the electrical explosion made by mixing aluminum wire and water to generate gases as the driving force to blast off the circuit breaker, and resorts to a new scheme by applying the electromagnetic pulse, thereby overcomes the deficiencies of the old explosive type DC circuit breaker which poses strict requirements to the components. Also the requirements of the power supply and the power control device for the pulse current generation are much lower, but at the same time the circuit breaker is able to open the main circuit of a higher voltage and current capacity.

A pyrotechnic circuit breaker comprising: a casing (1) with at least one cutoff chamber (7, 7'), at least one electric conductor (2), at least one punch (4) arranged to cut said at least one electric conductor (2), at least one pyrotechnic actuator, an insert (31) overmoulded over said at least one electric conductor (2), characterized in that the casing (1) comprises a first casing portion and a second casing portion, with at least one sealing means between the insert (31) and one of the first casing portion and / or second casing portion in order to seal said at least one cutoff chamber (7, 7').

An external driving type quick switch structure comprises an upper shell, a lower shell and a conductive plate arranged between the upper shell and the lower shell. An electronic ignition device and apiston are sequentially arranged in the accommodating cavity of the upper shell from top to bottom, and an accommodating cavity is formed in the lower shell below the piston and the conductive plate;the switch structure is characterized in that the conductive plate is recessed towards the accommodating cavity of the lower shell, and a flat-bottomed notch is formed in the accommodating cavity; abreaking notch and a bending notch are formed in the flat bottom of the notch at intervals, and the lower end of the piston is located above the breaking notch. The accommodating cavities in the uppershell and the lower shell meet the requirement that the piston can move into the lower shell from the upper shell. The conductive plate is broken at the breaking notch and falls down along the side wall of a cushion block by taking the bending notch as a rotating shaft, so that a main circuit is disconnected. Impact energy is absorbed through an energy absorption structure arranged between the piston and the cushion block.

A door-use feed protector and a circuit assembly arranging structure using the same is provided. The door-use feed protector includes a protector body to accommodate a circuit assembly in a curved state in a door and a circuit assembly holding portion provided on an outer wall of the protector body so as to hold a portion of the circuit assembly outside the protector body. The circuit assembly holding portion may be an auxiliary protector. The auxiliary protector has at least a pair of holding walls facing each other. The holding wall is provided with a resilient holding piece or an engagable cover for preventing the circuit assembly from protruding. The circuit assembly is introduced in the protector body of the door-use feed protector, and a portion of the circuit assembly led out of the protector body is held by the circuit assembly holding portion and is arranged toward an auxiliary in the door.

The invention discloses an explosion switch based on an annular shaped charge jet. The explosion switch belongs to an explosion type normally-closed switch and is a disposable switch. The explosion switch mainly comprises an insulated cylindrical housing, two metal circular pipes and a shaped charge bag. According to the explosion switch disclosed by the invention, by adopting a shaped charge structure, the explosion energy is utilized fully, and the usage amount of an explosive is effectively reduced; because the explosive has the characteristics of strong power energy and fast power speed, the switch has the advantage of fast disconnection speed; and meanwhile, through reasonable structural design, the switch has the characteristic of far two-end distance after being disconnected, thereby particularly being applicable to some large circuits and high-power circuits; and in addition, the explosion switch further has the advantages of simple structure, high reliability and cheap price, etc.

A high-response-speed fuse comprises an upper cover and a lower housing. A conductive board is arranged between the upper cover and the lower housing. An insulating arc extinguishing diaphragm is arranged between the conductive board and the upper cover. The upper cover is internally provided with a chamber. The chamber is internally provided with a gas generating device. The lower surface of theconductive board at a position relative to one side of the lower opening of the chamber is provided with a breaking groove. A front arc extinguishing gate plate and a back arc extinguishing gate plateare separately arranged at the front part and the back part in the lower housing. An accommodating chamber for falling after breaking of the conductive board is formed between the front arc extinguishing gate plate and the back arc extinguishing gate plate. The lower surface of the conductive board in two ends of the upper opening of the accommodating chamber is provided with a breaking groove which extends across the width of the current conducting plate. A buffering chamber is arranged among the front arc extinguishing gate plate, the back arc extinguishing gate plate and the bottom plate of the lower housing. The back arc extinguishing gate plate is communicated with outside through a gas outlet which is arranged on the lower housing. According to the high-response-speed fuse, the conductive board is broken through a gas impact force for realizing a circuit switching-off purpose. Furthermore the high-response-speed has advantages of high response speed and high safety performance.