15results about How to "Accelerate off" patented technology

The utility model discloses a double-side-wall insulated gate sheet, a non-polar arc extinguishing structure and a direct-current circuit breaker, and belongs to the technical field of low-voltage electric appliances. The double-side-wall insulated gate piece comprises a side wall insulated gate piece set, the side wall insulated gate piece set is composed of a plurality of insulated gate pieces, the insulated gate pieces are arranged to be perpendicular to an arc isolation wall in the direct-current circuit breaker, and the insulated gate pieces are arranged in an extending mode in the arc movement direction. The technical problems that arc extinguishing of an insulated gate sheet of a direct-current arc only depends on the action of a magnetic field and an airflow field of the arc, the lengthening and cooling action of the insulated gate sheet on the arc is limited, and an external magnetic field has directivity and cannot meet the requirement of non-polar direct-current arc breaking are solved.

The utility model relates to a high-voltage plastic shell isolation switch. The high-voltage plastic shell isolation switch comprises a contact assembly and an arc extinguishing assembly. The contact assembly comprises a fixed contact and a moving contact, the fixed contact is fixedly arranged, the moving contact can be movably arranged relative to the fixed contact, and the moving contact and the fixed contact are electrically connected when being in contact; the arc extinguishing assembly comprises an arc extinguishing shell and gas generating parts, an arc extinguishing space is arranged in the arc extinguishing shell, the moving path of the moving contact is located in the arc extinguishing space, the two gas generating parts are located in the arc extinguishing space and arranged at intervals, the static contact and the moving contact are located between the two gas generating parts, and the spacing distance between the two gas generating parts is 8-12 mm. According to the scheme, when the moving contact and the static contact are disconnected, the exhaust speed is increased, airflow is equally divided, arc extinguishing is efficient, and then zero flashover is achieved.

The utility model discloses a novel ashtray which comprises a bottom plate, and a shell is rotationally installed on the bottom plate. The upper end of the shell is of an open structure and covers the shell through a cover plate. A guide part is further arranged at the bottom of the cover plate, a discharging port is further formed in the guide part, and the discharging port is blocked through an arranged plug so as to be sealed. In conclusion, the guiding part on the cover plate is used for guiding the cigarette butts to enter the shell, then the shell is used for containing the cigarette butts, after the cigarette butts enter the shell, the plug is used for blocking the discharging opening, the interior of the shell can be sealed, and on one hand, the cigarette butts are prompted to be extinguished rapidly; secondly, other cigarette butts are prevented from being ignited by the cigarette butts; and 3, smoke generated by the cigarette butts is prevented from flying indoors. Due to the fact that the shell can rotate on the bottom plate, the ashtray can be used as a desktop ornament while serving as an ashtray, and meanwhile the device can be played by lifting the lifting rod. On the basis, the ashtray has a novel structure, and can be used for playing and decorating a table top.

The invention discloses a circuit breaker arc extinguish chamber shielding case structure easy to dissipate heat, and belongs to the technical field of high-voltage switch equipment, the circuit breaker arc extinguish chamber shielding case structure easy to dissipate heat comprises a static contact end and a shielding case structure, the shielding case structure comprises a connecting end, a shielding case and a heat exchange cooling structure, the connecting end is assembled at the rear end of the static contact end, and the shielding case is assembled in the connecting end; the shielding case structure of the arc extinguish chamber of the circuit breaker is designed, high-temperature airflow is divided through the conical protrusions, and then the high-temperature airflow spirally flows between the guide cylinder and the shielding case under the action of the heat exchange cooling structure, so that the shielding case structure of the arc extinguish chamber of the circuit breaker is formed. According to the shielding case structure, the flowing distance of high-temperature airflow in the shielding case is lengthened, the high-temperature airflow sufficiently exchanges heat with a medium in the heat exchange cooling structure, efficient cooling is carried out, the temperature of the airflow finally flowing out of the shielding case structure is greatly reduced, and damage to the pipe wall of the circuit breaker is avoided.

The application discloses a novel active fireproof distribution box in the technical field of distribution boxes, which comprises a box body, and circular shafts are fixedly installed at the back of both sides of the inner cavity of the box body. The high-pressure cavity, electromagnetic valve, circular air bag and first thorn needle are arranged. When a fire breaks out inside the box body, dense smoke will be continuously generated inside the box body. At this time, the two smoke sensors can sense the generation of the dense smoke and send a signal to the controller. The controller will control the electromagnetic valve to open. At this time, the high-pressure gas in the high-pressure cavity can enter the inside of the bottom cavity. Under the action of the air pressure, the moving plate can drive the first thorn needle to move downward. Finally, the bottom end of the first thorn needle can puncture the circular air bag, so that the circular air bag is burst open. At this time, the dry powder in the circular air bag can be scattered downward, so that the effect of extinguishing the fire source inside the box body can be achieved, and the active fireproof purpose is effectively achieved.

The utility model relates to the field of power equipment, and particularly discloses an arc extinguishing mechanism of a load switch, the arc extinguishing mechanism comprises a cylinder and a control rod, the cylinder comprises an upper cover and a base, the control rod penetrates through the base, the outer wall of the control rod is connected with a moving contact, the inner side wall of the base is connected with a grounding piece, and the grounding piece is connected with the upper cover. Static contacts are fixedly connected in the upper cover and the base, a partition plate is arranged between every two adjacent static contacts, a fixing plate is connected to the side wall of the partition plate in the upper cover, the fixing plate is perpendicular to the partition plate, and an arc chute is arranged on the side, close to the static contacts, of the fixing plate. And the side wall of the cylinder body is provided with an air inlet hole for the insulation gas to enter. The arc extinguishing mechanism of the load switch has the effect of accelerating arc extinguishing.

The invention discloses an arc extinguishing mechanism and a circuit breaker, the arc extinguishing mechanism comprises a moving contact, a static contact and two permanent magnet groups, one end of the static contact is provided with a static contact, the moving contact can rotate relative to the static contact to realize contact or separation with the static contact, the number of the permanent magnet groups is two, the two permanent magnet groups are respectively arranged on two opposite sides of the static contact, at least two permanent magnets are arranged in each permanent magnet group, the polarities of the two adjacent permanent magnets in each permanent magnet group towards one end of the static contact are different, the polarities of the two opposite permanent magnets in the two permanent magnet groups towards one end of the static contact are different, and the polarities of the two permanent magnets in each permanent magnet group towards one end of the static contact are different. The connecting line of the two permanent magnets which are oppositely arranged in the two permanent magnet groups intersects with a plane formed by the moving trajectory of the moving contact; according to the arc extinguishing mechanism, at least two magnetic fields with opposite directions are formed between the static contact and the moving contact, so that an arc track between the static contact and the moving contact is lengthened to the greatest extent, and the breaking capacity of the circuit breaker in a limited space is improved.

This utility model relates to an air outlet structure for a miniature circuit breaker. By setting a first air outlet and a second air outlet on the housing, a multi-channel arc-extinguishing path is formed. During the operation of the circuit breaker, the electric arc and heat generated inside can be quickly dissipated through these two air outlets, preventing the airflow from interfering with each other within the arc-extinguishing assembly. This effectively reduces the residence time of the electric arc inside the circuit breaker. The first air guide wall between the arc-extinguishing assembly and the first air outlet, and the second air guide wall between the arc-extinguishing assembly and the second air outlet, play a role in precisely guiding the airflow. When an electric arc is generated, the air guide wall can guide the airflow in an orderly and uniform manner to the arc-extinguishing assembly, forming a stable and suitable airflow field around the arc-extinguishing grid. This airflow field helps to quickly remove the heat and plasma generated by the electric arc, accelerate the arc extinguishing process, improve the arc extinguishing efficiency, reduce the erosion of the internal components of the circuit breaker by the electric arc, and enhance the breaking capacity and reliability of the circuit breaker.

A rapid breaking high-voltage vacuum circuit breaker disclosed by the present invention comprises an operation box body and vacuum arc-extinguishing chambers installed at the left side and the right side of the top of the operation box body, movable conductive blocks are arranged in the vacuum arc-extinguishing chambers, and movable conductive plates are arranged at the positions, corresponding to the conductive blocks, in the operation box body. A servo motor is installed on the back face of the inner wall of the operation box body, a rotating protruding block is installed on the surface of an output shaft of the servo motor, the rotating protruding block is driven by the servo motor to rotate, a conductive block can move downwards to achieve breaking, and an air blower is installed on the right side of the inner wall of the operation box body. According to the invention, the servo motor drives the rotating convex block to rotate, so that the moving plate can drive the conductive plate to move downwards through the movable plate, and the conductive plate drives the conductive block to be separated from the conductive contact through the conductive rod, so that the breaking effect can be quickly realized, and the electric arc can be quickly extinguished; and moreover, the switching-on or switching-off operation can be quickly realized without manual operation, and the safety is improved at the same time.

The application discloses an electrical protection device for a low-voltage circuit, comprising a protection shell, a double-contact assembly, a contact seat assembly, an arc blowing assembly and an arc extinguisher, in order to solve the technical problem that the general electrical protection device in the prior art has slow arc extinguishing speed, limited breaking capacity, and the contact is easy to be ablated and damaged when frequently breaking the arc, and lacks a mechanism for preventing misoperation after fault tripping, resulting in insufficient safety, the application designs the above-mentioned electrical protection device for a low-voltage circuit, the double-contact assembly is used for realizing isolation protection of the arc and the main contact, the arc blowing assembly and the arc extinguisher are used for accelerating the movement and extinguishing of the arc in a cooperative manner, and the self-locking mechanism is used for preventing misoperation after fault, so that the breaking performance and operation safety of the device are improved, and the stable operation of the low-voltage circuit system is ensured.

An arc extinguish chamber structure of a switch belongs to the technical field of low-voltage apparatuses. The arc extinguish chamber comprises a pair of side plates, a plurality of grid pieces arranged between the pair of side plates and a pair of gas generating pieces, the grid pieces are arranged at intervals, and the pair of gas generating pieces are respectively located at the lower edges of the grid pieces. The arc extinguish chamber is characterized in that a partition plate piece is further arranged on the inner side of each side plate and comprises a plate part and a gas generating part extending from the plate part to the grid pieces; and the gas generating part is embedded into a gap between the adjacent grid sheets. The device has the advantages that the gas generating part extending towards the grid plate is arranged on the partition plate piece, so that on one hand, insulating gas is generated to accelerate arc extinguishing; and on the other hand, airflow in the arc extinguish chamber can be ensured to push the arc to be in the middle position, and the arc is prevented from transversely moving to the edge of the grid plate.

The invention relates to the field of communication cables, and in particular to a fire-resistant communication cable for a radiation-resistant nuclear power plant and a preparation method thereof, which are used to solve the problem of poor radiation resistance and fire resistance of existing communication cables. In the preparation method, a fire-resistant radiation-proofing agent is firstly prepared in the process of preparing the fire-resistant communication cable for a radiation-resistant nuclear power plant, and the fire-resistant radiation-proofing agent is added to the cable protective jacket to give it good radiation resistance and fire resistance, which can greatly reduce the potential threat to the communication cable caused by a large amount of radioactive substances generated during the operation of the nuclear power plant, can inhibit the rapid spread of flames on the communication cable, reduce the probability of fire in the nuclear power plant, and avoid huge hidden dangers to personnel health and property safety.

The present invention relates to the technical field of ring network cabinets, and discloses an arc extinguishing device for a ring network cabinet, wherein the arc extinguishing device comprises a mounting seat, a plurality of arc extinguishing grids and an adjusting member; the plurality of arc extinguishing grids are mounted in the mounting seat to form a plurality of connected arc extinguishing chambers, the arc extinguishing grids are magnetic conductors, the arc extinguishing grids have a flat section and a corrugated section, the flat section is arranged on the arc entry side of the arc extinguishing chamber, and a plurality of groups of flame retardant strips are symmetrically arranged on the flat section on opposite sides of the inner wall of the arc extinguishing chamber, so as to form a plurality of arc entry channels on the flat section and connected to the corrugated section, so that when a short arc flows through the corrugated section from the arc entry channel, the trough of the corrugated section lengthens the short arc, and the crest of the corrugated section shortens the short arc, so that the short arc continuously reduces the electric field strength in the arc when it is alternately lengthened, so as to enhance the recombination and diffusion of ions and accelerate the extinction of the short arc. The arc extinguishing device of the present invention has a simple structure and is easy to operate, and can effectively ensure the arc extinguishing effect and improve safety by designing a two-stage arc extinguishing structure.

The invention discloses an arc extinguishing control circuit device, which comprises a first shell, a second shell, a first arc extinguishing mechanism, a second arc extinguishing mechanism, a first binding post and a second binding post, and the multi-stage arc extinguishing mechanism of the device can effectively improve the reliability and efficiency of arc extinguishing. A coil, a spring and an iron block in the first arc extinguishing mechanism form an electromagnetic system, and a magnetic field generated by the coil can quickly act on the iron block, so that a contact plate is driven to act through a connecting rod, the current is quickly cut off, and the arc forming time can be effectively shortened. A first guide piece and a second guide piece in the second arc extinguishing mechanism guide the arc to an arc extinguishing strip, the arc extinguishing strip can segment the arc in a physical mode, arc energy is reduced, and arc extinguishing is further accelerated. The design of the air holes in the side face of the second shell facilitates heat dissipation in the device, equipment damage caused by high temperature is prevented, and the whole device is designed in a modular mode, so that the device is compact in structure and convenient to install and maintain.

The utility model relates to the technical field of low-voltage electric appliances, in particular to an arc extinguish chamber and a circuit breaker. The arc extinguish chamber is used for the circuit breaker, and the circuit breaker comprises a moving contact and a static contact. The arc extinguish chamber comprises a grid plate group, a movable run-on plate and a magnetism increasing piece; the movable contact is provided with a movable end used for being in contact with or separated from the static contact, the movable end tab comprises a fixed part and an extension part which are connected, the fixed part is arranged at the top of the grid piece group, and the extension part extends from the grid piece group to the movable end of the movable contact in a separated state; the magnetism increasing piece is arranged on the extending path of the extending part. By arranging the magnetism increasing piece on the extension path of the extension part, the magnetic blow-out force of the movable arc root moving towards the interior of the arc extinguish chamber can be improved, so that the arc can enter the arc extinguish chamber more easily, and the arc extinguish capacity of the arc extinguish chamber is improved. The magnetism increasing piece is arranged on the side, close to the moving contact, of the grid piece set, and the arc cutting effect of the grid piece set can be improved.