81 results about "Sulfur hexafluoride circuit breaker" patented technology

A self-energizing thermal-expansion SF6 arc-extinguishing chamber for circuit breaker is composed of static contact mechanism, dynamic contact mechanism and arc-extinguishing chamber consisting of cylinder, piston and gas chamber. It features that the downstream throat of small-diameter arc-extinguishing nozzle has a structure with dual expanding angles and dual guides, and its gas chamber includes thermal expansion chamber and gas compression chamber. Its advantage is that load current does not affect the on-off operation.

The invention discloses 126-kV cabinet type gas-insulated metal-closed switching equipment and solves the problems that: the 126-kV cabinet type gas-insulated metal-closed switching equipment in the prior art is large in size; final assembly and check are required in a user field; gas tightness is relatively difficult to guarantee; environmental pollution is easy to occur during switching on or off of an electric main loop by using a sulfur hexafluoride breaker; and pressure resistance capacity is relatively lower. The 126-kV cabinet type gas-insulated metal-closed switching equipment is characterized in that: six compartments have a square box shape formed by laser-cutting and laser-welding non-magnetic stainless steel plates which are 4 mm thick; sulfur hexafluoride gas of which the pressure is 0.1 to 0.2 MPa is filled into all compartments; all compartments realize insulating transition connection by using a disk type bus insulating sleeve component of which the diameter is smaller than 300 mm; a vacuum arc-distinguishing chamber polar column is arranged in a vacuum breaker compartment; and double-sheet splicing buses which realize communication of the main loop are arranged in the six compartments. The 126-kV cabinet type gas-insulated metal-closed switching equipment has the advantages of good gas tightness, high mechanical strength, low manufacturing cost and good environmental benefit, solves the insulating problem under the condition of low gas pressure and improves the operating safety of the equipment.

The invention relates to a double acting high voltage sulfur hexafluoride breaker and a double acting transmission device of the double acting high voltage sulfur hexafluoride breaker. The transmission device comprises a driving rack and a silent arc contact rack which are parallel and extend along a moving direction of a moving contact assembly. A first gear in engaged transmission with the two racks simultaneously is arranged between the two racks. The driving rack is fixedly connected onto the moving contact assembly and reciprocates linearly with the moving contact assembly. The driving rack drives the silent arc contact rack to move reversely through the first gear. The silent arc contact rack is fixedly connected onto a silent arc contact and drives the silent arc contact to reciprocate linearly. A driven rack is arranged on one side on the back of the silent arc contact rack. A transmission gear is arranged on the back of the silent arc contact rack. A second gear in engaged transmission with the two racks simultaneously is arranged between the silent arc contact rack and the driven rack. The silent arc contact rack drives the driven rack to move reversely through the second gear. A moving end shielding cover of the moving contact assembly is fixedly connected onto the lower end part of the driven rack and moves with the driven rack.

The invention discloses a working cylinder integrated with a control valve and a high-power hydraulic spring operating mechanism. The high-power hydraulic spring operating mechanism is used for an extra-high voltage and ultra-high voltage sulphur hexafluoride circuit breaker. According to the high-power hydraulic spring operating mechanism, the working cylinder is used as a matrix. The high-power hydraulic spring operating mechanism comprises an energy storage module, a control valve module and an oil tank module. The energy storage module is concentrically sleeved outside the working cylinder and is fixed; the control valve module is coaxially arranged in series inside the bottom of the working cylinder; the oil tank module is fixed on the upper end face of the working cylinder; an oil tank of the oil tank module is communicated with the working cylinder and the control valve by high and low voltage oil circuits and a signal oil circuit; and oil circuits are communicated and closed by the control valve module. Due to the working cylinder and the high-power hydraulic spring operating mechanism, the technical problem that the mode of arranging the control valve outside a conventional high-power hydraulic spring operating mechanism is changed into a mode of integrating the control valve inside the working cylinder is solved, so that the radial sealing with a better sealing effect is adopted to replace the axial sealing.

The invention discloses a large-power hydraulic operating mechanism which is used for super-high voltage and ultrahigh voltage sulfur hexafluoride circuit breakers. The large-power hydraulic operating mechanism comprises an energy storage cylinder, a butterfly group module, a work cylinder module, a control valve module and an oil pump tank module, wherein the work cylinder module is coaxially sheathed and fixed in the energy storage cylinder and an energy storage cylinder of the butterfly group module, and the oil pump tank module, the control valve module and the work cylinder module are sequentially and coaxially connected in series into a whole; an oil tank of the oil pump tank module is communicated with a cylinder of the work cylinder module through a high voltage oil circuit, a low voltage oil circuit and a signal oil circuit; a mechanical lock is arranged on the stroke of a piston rod, and the mechanical lock is matched with a connector at the top end of the piston rod through the top end of a crank to realize locking or delocking; and a connecting rod and a rack which are linked are fixed on energy storage flanges of the energy storage cylinder and the butterfly group module, and the other end of the connecting rod is connected with a safety valve outer crank in the control valve module. The hydraulic operating mechanism is changed from a parallel integrated mode into a series integrated mode with firm mechanical connection and good seal effect.

The invention discloses a sulphur hexafluoride breaker having a heating protection device and capable of normally working in the outdoor circumstance having low temperature (below minus 30 DEG C). The breaker is provided with an insulating sealing shell (1) in which an upper insulating pull rod (2), a lower insulating pull rod (3) and an upper contact (4), a lower contact (5) respectively fixed at front ends of the insulating pull rod (2) and the lower insulating pull rod (3) are provided; a temperature sensing element (7) and an electrothermal element (8) are provided below a lateral insulating board (6) which is provided below the lower contact (5); bottom panel of the insulating sealing shell (1) is provided with a temperature sensing element binding post (9) connected with the temperature sensing element (7) and an electrothermal element binding post (10) connected with the electrothermal element (8); the temperature sensing element binding post (9) and the electrothermal element binding post (10) are connected with a temperature control circuit provided outside the insulating sealing shell (1).

The invention discloses an on-line monitoring device of the sulphur hexafluoride circuit breaker for knowing the operating state of the breaker and the rejected region in time, reducing the fault incidence rate, increasing the work efficiency of the breaker and safety, increasing the repair pertinence and reducing the maintenance cost. The monitoring device is provided with a vibration frequency sensor and the vibration frequency sensor is connected with a singlechip microcomputer IC by a signal processing circuit A and a display circuit and an alarm circuit are connected with the singlechip microcomputer IC.

The invention discloses a sulfur hexafluoride breaker mobile overhaul trailer which comprises a trailer, wherein a closed carriage is arranged on a trailer underframe, a cleaning chamber is arranged at the front end in the carriage, an operating room is arranged behind the cleaning chamber, a dress-changing and blowing and showering device is arranged in the cleaning chamber, a lateral door is arranged on one side of the cleaning room, a personal entrance is arranged between the cleaning room and the operating room, a material flow door is arranged behind the operating room, a vehicle-mounted air conditioner is arranged on a top plate of the operating room, a purifier, an air return hole and a lighting lamp are arranged under the top plate of the operating room by using a bracket, two side walls of the operating room are provided with glass windows, and an inspection rack and a hand push type workpiece trolley are arranged on the ground of the operating room. One trailer carriage is used for overhaul operation of a sulfur hexafluoride breaker, thus the sulfur hexafluoride breaker mobile overhaul trailer has the advantages of strong mobility, convenience for overhaul, low cost and practicability.

The embodiment of the invention discloses a failure simulation device of a sulfur hexafluoride circuit breaker. The device comprises a shell, an arc control assembly and a control assembly, wherein the arc control assembly is arranged inside the shell, the control assembly is fixedly connected with the arc control assembly and is connected to the surface of the device after penetrating through the shell, and the shell and the arc control assembly are provided with a high-level glass window which is used for observing the internal structure of the failure simulation device. The switch-on and switch-off states of the circuit breaker can be simulated by operating the control assembly, the assemblies of the shell are connected through bolts, and adjustment or replacement of various components of the failure simulation device can be carried out so as to simulate various failure loading. Besides, signals of the interior of the failure simulation device can be collected in the failure simulation process through an electromagnetic wave sensor arranged on the failure simulation device, and reliable data is provided for failure diagnosis of the interior of the circuit breaker, thereby improving the safe operation of a power grid.

The invention discloses a three-dimensional model system of a 220 KVGL314 sulphur hexafluoride circuit breaker, and relates to the technical field of three-dimensional simulation of the sulphur hexafluoride circuit breaker. The three-dimensional model system is assembled by utilizing modeling software, taking a part grade as a unit and adding geometric constraint according to the assembly relation of equipment to finally generate a three-dimensional virtual model of the 220 KVGL314 sulphur hexafluoride circuit breaker; after the three-dimensional virtual model is built, the three-dimensional virtual model is guided into a simulation platform; the simulation platform comprises a model engine, a data engine, a sound engine, a script engine and a logic engine; the model engine guides a model built in the modeling software; then mathematical logic relation and a geometric constraint condition are added to the model by using the logic engine; interactive animation production is carried on a transformer model according to standard transformer disassembly and assembly steps and overhaul process; and a programmer can add sounds and demonstration animations to a simulation system by using the sound engine and the script engine. The three-dimensional model system disclosed by the invention greatly enhances the teaching quality and reduces the loss of practical equipment.

The invention relates to a contact collision buffer device in the field of a high-voltage electrical apparatus and a sulfur hexafluoride breaker using the same. The contact collision buffer device includes a guide seat and a contact guide rod orientedly mounted on the guide seat, and further includes a spring used for providing an elastic reactive force for contact when the contact on the contactguide rod is collided. One end of the contact guide rod is used for mounting a contact, and the other end is connected with a damping structure; and the damping structure comprises a piston cylinder and a piston disposed in the piston cylinder, wherein the contact rod is fixedly connected with the piston, and the piston is provided with damping holes. When the contact collision buffer device is used, the contact is mounted on the contact guide rod, and the action of the guide rod is buffered by the damping structure, so that separation of a moving contact and a static contact can be achieved relatively quickly, and repeated collision between the two contacts is avoided. Compared with the prior art, the impact of contact collision on the breaker is small, and breaker members are not easilydamaged.

The invention provides a sulfur hexafluoride circuit breaker protection device. The device comprises a detection box body, a sulfur hexafluoride gas concentration sensor, a gas pressure sensor, a particulate matter sensor, a data information sampling circuit, a circuit board and a relay, wherein the detection box body is arranged at the bottom of a sulfur hexafluoride gas tank; the sulfur hexafluoride gas concentration sensor, the gas pressure sensor and the particulate matter sensor are embedded in the surface of the detection box body and used for detecting corresponding data in a working environment of a circuit breaker; the data information sampling circuit is embedded in the surface of the detection box body and used for collecting the data; the circuit board is arranged on a side wall of the sulfur hexafluoride gas tank, connected with the data information sampling circuit and used for analyzing, comparing and storing the data and sending out a control signal of switch-on/off ofa block relay under the condition that the circuit breaker is judged to break down through comparison; and the relay located on a valve of the circuit breaker. According to the technical scheme, the health condition of the circuit breaker can be judged according to working environment information of the circuit breaker, so that the circuit breaker is ensured to work efficiently.

The invention discloses a community terminal highly and lowly distributed GIS high pressure sulfur hexafluoride breaker arc extinguish chamber, comprising a three-terminal community box type breaker arc extinguish chamber formed by a breaker shell and three terminals arranged in the interior of the breaker shell; wherein the terminal is composed of a static contact mechanism and a moving contact mechanism which are used in a matching way, a coil out mechanism respectively connected with the static contact mechanism and the moving contact mechanism, an insulating tension rod driving the moving contact mechanism to carry out on and off operations up and down as well as a static contact seat and a moving contact seat which are respectively for installation of the static contact mechanism and the moving contact mechanism; the three terminals are arranged in a form like Chinese character 'PIN', and the three terminals are different in the height of the fracture at the middle part or two of the three are the same. The invention has novel and reasonable structure design and good use effect, can meet the use requirement of electric equipment of high voltage, high capacity, combined type, miniaturization and high reliability, and is especially applicable to 126kV breaking current 40kA small interval GIS self energy type SF6 breaker.

The invention discloses an energy storage motor control circuit of a self-energy type sulfur hexafluoride circuit breaker. The energy storage motor control circuit comprises a motor power supply circuit and a motor energy storage control circuit; the motor power supply circuit has an energy storage air switch and a normally open contact of an energy storage alternating current contactor; the motor energy storage control circuit comprises an alternating current circuit and a direct current circuit, wherein the alternating current circuit is connected with the motor power supply circuit in series; the direct current circuit has a control power supply air switch, an energy storage travel switch, and a control coil of an energy storage middle relay and a control coil of an energy storage time relay which are connected in parallel; the energy storage motor control circuit also comprises an alternating current relay, wherein the control coil of the alternating current relay is connected with the motor power supply circuit in series; and the normally open contact of the alternating current relay is connected with the control coil of the energy storage time relay in the direct current circuit in series. By adoption of the energy storage motor control circuit, when the alternating current is recovered, the motor control circuit can start energy storage as normal.

The invention provides a grey target theory-based sulfur hexafluoride circuit breaker state assessment method, which comprises the following steps of b, acquiring an approaching degree by virtue of grey target transformation; c, performing state grading on the state of a circuit breaker; d, determining a state grade of the circuit breaker according to a numerical value of the approaching degree. According to the grey target theory-based sulfur hexafluoride circuit breaker state assessment method, an improved weight grey target theory is adopted for assessing the state of the circuit breaker, and a least deviation weighting method is adopted for determining a weight of a state index of the circuit breaker, so that a calculation result is more reasonable, the shortcomings of single subjective and objective weighting methods are overcome, the accuracy of an assessment result is ensured, an overhauling strategy is more reasonable and targeted, and the running stability and the power supply reliability of a power system are ensured.

The invention relates to a sulfur hexafluoride circuit breaker, in particular to a sulfur hexafluoride circuit breaker porcelain bottle and a manufacturing process thereof. The bottle is obtained by blending and firing hydromica clay, kaolin, feldspar, bonding clay and artificial mullite, wherein concrete components and mixture ratios are: 3.8 to 4.2 percent of K2O and Na2O, 70 to 72 percent of SiO2, 23 to 25 percent of Al2O3, less than 1.0 percent of Fe2O3, and less than 0.1 percent of TiO2. The process comprises a concrete course as follows: proportioning materials; ball-milling the materials; discharging pulp; performing sieving; refining clay; molding clay; drying clay; glazing blanks; firing the blanks; and taking the obtained products out from a kiln. The invention has the advantages that the products of the invention all meet national standard GB772-2005 and product pattern requirements, have mechanical properties completely meeting requirements, are large in margin and free from the phenomenon that porcelain bushings crack during assembly, and are fundamentally improved in air tightness.

The invention discloses a sulfur hexafluoride breaker inflation universal connector which is mainly composed of a kit body, an air pipe, a pressure gage and valves. The air pipe is fixed on a bottom plate of the kit body and provided with a plurality of air holes communicated with one another, the air holes are formed outside the kit body, the valves are mounted on the air pipe and close to the air holes respectively, and the pressure gage is fixed in the bottom plate of the kit body and communicated with the air pipe. The sulfur hexafluoride breaker inflation universal connector has the advantages that air hoses with different calibers are clamped in one tool kit in a centralized mode, and through cooperation with the air pipe with the air holes, the universal connector meets the requirements of air holes of different manufacturer devices. The universal connector is simple in structure, low in manufacturing cost, convenient to use, and capable of meeting the requirements of air connection of air holes with different diameters.

The invention relates to a processing method of a sulfur hexafluoride breaker gas adsorbent. Chemical reagents react with harmful gas substances comprising the of sulfur hexafluoride gas adsorbent and the like, so the harmful gas substances are converted into nontoxic inorganic salts, thereby a leftover problem after traditional gas adsorbent processing is solved; and the adopted reagents are common chemical reagents, so the processing cost of the harmful gas substances is saved, thereby the processing method has very large practicality and popularization values.

The invention discloses a topological structure for operation of a short circuit impact generator. The topological structure comprises the short circuit impact generator, a current uniformizing and limiting device, a first switch, a second switch, a load electrical appliance and connection busbars, wherein the short circuit impact generator, the current uniformizing and limiting device, the first switch, the second switch and the load electrical appliance are sequentially connected through the connection busbars to form a loop, or the short circuit impact generator, the first switch, the current uniformizing and limiting device, the second switch and the load electrical appliance are sequentially connected through the connection busbars to form a loop. Two or three parallel vacuum arc extinguish chambers are connected with the current uniformizing and limiting device which has functions of current uniformizing and limiting, on and off current of each vacuum arc extinguish chamber is lowered, and an original high-capacity sulfur hexafluoride circuit breaker which is high in manufacturing cost, large in size and different in frequent on and off is replaced by two or three parallel vacuum arc extinguish chambers which are lower in manufacturing cost.

The invention relates to a sulfur hexafluoride circuit breaker and an electromagnetic operating mechanism thereof. The sulfur hexafluoride circuit breaker comprises a permanent magnet column which isarranged vertically and a permanent magnet connected on the permanent magnet column in a sliding way. A magnetic force reducing locking device is connected on the permanent magnet column. The internalpart of the magnetic force reducing locking device is provided with a sliding groove. A compression spring is fixedly connected on the internal wall of the sliding groove. One end of the compressionspring is fixedly connected with a locking rod. The external surface of the locking rod is provided with a limiting groove. The internal part of the magnetic force reducing locking device is providedwith a locking groove. According to the sulfur hexafluoride circuit breaker and the electromagnetic operating mechanism thereof, the magnetic induction intensity B decreases during the slow degaussingof the permanent magnet and the magnetorheological fluid inside the magnetorheological fluid locking body liquefies so as to unlock the locking rod. The locking rod is ejected because of the action of the compression spring and then the pushing rod is locked and the closing mechanism is unable to work so that arc harm caused by insufficient pushing force can be avoided the safety protection capability of the equipment can be improved.

The invention relates to a sulfur hexafluoride breaker intelligent dived-shut brake operation mechanism. The sulfur hexafluoride breaker intelligent divide-shut brake operation mechanism is used on an actuator of a power transmission and transformation system high voltage and high power switch or other divide-shut brake switches driven by a direct 220 V motor, and belongs to a central part of the high power switch actuator. The current sulfur hexafluoride breaker divide-shut brake operation mechanism used for power transmission system is still a traditional product, and is formed by a plurality of relays and complicated interlock circuits of the relays. A temperature switch is used for detecting over-current, and a time relay is used for measuring instruction execution timeouts to protect the current sulfur hexafluoride breaker divide-shut brake operation mechanism. The composition of the current sulfur hexafluoride breaker divide-shut brake operation mechanism has the disadvantages of being complex in composition, large in volume, short in service life, and high in cost; a relay arc-pulling phenomenon exists. The sulfur hexafluoride breaker intelligent dived-shut brake operation mechanism replaces a secondary relay control circuit by a single-chip microcomputer software and hardware, and a direct current (DC) 5V electronic circuit, uses a high power electronic element to replace an electromagnetic relay. A switching power supply and a photoelectric coupling isolation technique enable the sulfur hexafluoride breaker intelligent dived-shut brake operation mechanism to have functions of intelligent judgment and control, so that the shortcomings of traditional products are overcome.

The invention discloses a rainproof device of a sulfur hexafluoride density relay. The rainproof device comprises a rain hood, a rear cover clamped to the rain hood, a first containing groove and a second containing groove, wherein the first containing groove is formed in the rain hood and used for containing a connecting wire between a sulfur hexafluoride circuit breaker and the sulfur hexafluoride density relay, and the second containing groove is formed in the rear cover and used for containing the connecting wire between the sulfur hexafluoride circuit breaker and the sulfur hexafluoride density relay. The rainproof device of the density relay is compact in structure, convenient to mount, good in rainproof performance, simple in structure, low in cost and suitable for being used in the sulfur hexafluoride circuit breaker.