34 results about "Arc blow" patented technology

The utility model discloses a relay which comprises a contact part and an arc blowing assembly. The contact part comprises two contact assemblies, and each contact assembly comprises two static contacts and a movable contact piece used for making contact with or being separated from the static contacts. The arrangement direction of the two static contacts of the contact assembly is defined as a first direction, the movement direction of the movable contact piece is defined as a second direction, the first direction is perpendicular to the second direction, and the direction perpendicular to the first direction and the second direction is defined as a third direction; the plurality of contact assemblies are arranged along a third direction; the arc blowing assembly comprises four permanent magnets, and the four permanent magnets are located on the two sides of the contact part in the first direction respectively and correspond to the four static contacts in position respectively. Wherein the magnetic poles of the surfaces, facing each other, of the two permanent magnets corresponding to the same contact assembly are opposite, and in the third direction, the magnetic poles of the surfaces, facing the corresponding static contacts, of the two adjacent permanent magnets are opposite.

The invention discloses a primary and secondary fusion ring main unit, and relates to the technical field of ring main units, the primary and secondary fusion ring main unit comprises a ring main unit body, an outer shell is fixedly connected in the ring main unit body, and an inner shell is fixedly connected in the outer shell; a partition plate used for dividing the space between the outer shell and the inner shell into an upper cavity and a lower cavity is fixedly connected between the outer shell and the inner shell, a pressure sensor is installed on the outer portion of the inner shell, and a pressure relief mechanism used for releasing pressure in the inner shell is further included. The conveying mechanism comprises an electric telescopic rod fixedly installed on the inner wall of the outer shell, environment-friendly gas in the lower cavity is conveyed into the inner shell through the conveying mechanism, the concentration of the environment-friendly gas in the inner shell is recovered, the insulation performance of the interior of the inner shell is improved, in addition, the environment-friendly gas can be sprayed into the interior of the inner shell under a certain pressure, and the environment-friendly gas can be sprayed into the inner shell under a certain pressure. And high-speed air flow is formed, strong arc blowing force is generated, arc extinguishing is accelerated, a contact of the load switch and other parts are protected from being ablated by the arc, and expansion of faults is restrained.

The utility model discloses a moving contact, a static contact, a contact structure and a high voltage DC contactor, comprising a moving contact main body, the left end and the right end of the moving contact main body respectively form a moving contact part, and the middle positions of the two moving contact parts corresponding to the front side and the rear side are provided with contact avoiding grooves used for avoiding contact cooperation with the static contact end of the static contact. According to the utility model, the contact avoiding grooves are formed in the middle positions of the corresponding front and rear side edges of the movable contact part, and the static contact end of the static contact can be prevented from being in contact fit with the middle position of the movable contact part by using the contact avoiding grooves, so that the distribution position of electric arcs generated when the movable contact and the static contact are disconnected is changed; the arc generation position is kept away from the middle position where the moving contact and the static contact are in contact fit as much as possible, and therefore more arcs are distributed at the positions closer to the front side magnetic steel and the rear side magnetic steel in a concentrated mode, a stronger magnetic field is utilized to generate the arc blowing effect on the arcs, and the good arc extinguishing effect is guaranteed.

The invention belongs to the field of gas circuit breakers, and discloses a gas switch with an arcing air pressure automatic adjusting function, which comprises a switch body with a switching-on and switching-off direction and a piston rod capable of moving along the switching-on and switching-off direction; one end of the piston rod extends in the opening and closing direction, a piston rod inner cavity is formed in the piston rod, and a piston rod exhaust hole is formed in the side wall of the piston rod; the piston rod inner cavity extends in the extending direction of the piston rod and is open at one end of the piston rod, and a piston rod exhaust hole is formed in the open position. An elastic component is movably inserted into the end part of the piston rod, the elastic moving direction is matched with the opening and closing direction, and one end part of the elastic component corresponds to the inner cavity of the piston rod. Through the elastic assembly arranged on the inner cavity of the piston rod, the exhaust flow can be automatically adjusted according to the air pressure of arc hot gas, so that the air pressure of an arc combustion area is adjusted, the air pressure of arc blowing of the arc extinguish chamber is influenced, and self-adaption of the arc extinguish chamber to breaking current within a certain current range is achieved.

The present application relates to aluminum sheet metal hot welding technical field, specifically disclose a kind of aluminum sheet metal hot welding system and welding method, comprising: welding rod, one end fixedly installed with the welding torch outside gap, the other end fixedly installed with arc-shaped piece, and arc-shaped piece is coupled with transmission shaft, limiting column, equidistantly arranged in weld two sides, and one-side limiting column end and aluminum plate side wall keep adhering.This application can be self-adapted by equidistant distribution limiting column the arc shape of aluminum plate outer wall, and utilize guide rod to provide circumferential driving power to arc-shaped piece, make welding rod with molten pool as center and carry out sector movement, make welding torch self-adjustment and the included angle of weld, realize using physical components directly transfer curved surface information, meet tungsten electrode and the weld after the change of curved surface keeps angle constant, greatly weaken arc blow, argon covering abnormality and other problems, guarantee weld quality.

The present aspect relates to a high direct voltage switch comprising: a first pair (5) of contacts (6, 7); a second pair (8) of contacts (9, 10); an arc blow coil (2) configured to exert a magnetic field (B) on an arc formed between the first pair of contacts (6, 7), the switch (1) being characterized in that the blow coil (2) is electrically connected in parallel to the second pair (8) of contacts (9, 10).

A method of using a tungsten inert gas (TIG) welding flux for super duplex stainless steel (SDSS) is used to solve the problems of low weld depth / width ratio, low corrosion resistance, and arc blow existing in the conventional TIG welding flux for duplex stainless steel. The TIG welding flux for SDSS includes 20-30 wt % of silicon dioxide (SiO2), 20-25 wt % of titanium dioxide (TiO2), 15-20 wt % of vanadium dioxide (VO2), 10-15 wt % of molybdenum trioxide (MoO3), 10-15 wt % of zirconium diboride (ZrB2), 5-10 wt % of aluminum nitride (AlN), 5-10 wt % of manganese carbonate (MnCO3) and 5-10 wt % of nickel carbonate (NiCO3).

The utility model discloses an electromagnetic relay, which comprises a contact assembly and an arc extinguishing permanent magnet arranged on the outer side of the contact assembly. The contact assembly comprises two reeds, one reed is a static reed and is provided with a static contact, the other reed is a movable reed and is provided with a movable contact, and the static contact is matched with the movable contact; at least one reed is provided with an insulated arc-isolating member, and the arc-isolating member isolates an electric arc generated by breaking of the contact assembly from the reed where the arc-isolating member is located in the arc blowing direction of the arc extinguishing permanent magnet. According to the utility model, the arc extinguishing requirement can be met on the basis of miniaturization and microminiaturization of a relay product, so that the product quality is improved, and the service life of the product is prolonged. According to the utility model, the arc-isolating member made of a proper material can be selected according to the magnitude of the load current, so that the arc-isolating effect of the arc-isolating member is matched with the magnitude of the load, and the arc-isolating member can still effectively isolate the arc when the load is relatively large.

The invention provides an E6011 type cellulose welding rod and a preparation method thereof. The welding rod comprises a core wire and a coating, and the surface of the core wire is coated with the coating in a pressed mode; the coating is prepared from, by weight, 10-15 parts of potassium titanate, 10-15 parts of rutile, 18-21 parts of microcrystalline cellulose, 3-5 parts of manganese metal, 5-10 parts of fused magnesite, 9-12 parts of iron sand, 30-35 parts of iron powder, 5-8 parts of CMC-Ca and 0.5-1 part of rare earth ferrosilicon. According to the coating, a titanium type slag system is adopted, and a composite blowing force system is constructed to stabilize electric arcs and enhance electric arc blowing force, so that welding spatter and smoke dust are reduced; the slag alkalinity is adjusted by introducing alkaline oxide and CMC-Ca, so that the liquidity of molten iron during vertical downward welding is effectively controlled, and the process adaptability and the production convenience are both considered; and the high-proportion iron powder is added to improve the deposition efficiency, sleeve carbonization is inhibited through the synergistic effect of the magnesia and the iron sand, and the re-arc striking performance of the welding rod is improved. Splashing and smoke dust amount in the welding process can be remarkably reduced, and the comprehensive welding performance is excellent.

The utility model discloses a normally closed relay, which comprises a contact assembly, at least one side of the contact assembly is provided with an arc extinguish chamber, the contact assembly comprises a movable reed and a static reed which are matched with each other, the movable reed is provided with a movable contact, and the static reed is provided with a static contact; the movable reed comprises a main body part and a head part provided with the movable contact, a bending part is arranged between the main body part and the head part, so that the head part is close to the static reed and is positioned on one side, far away from the main body part, of the static reed, and the movable contact is in normally closed fit with the static contact; and an arc channel leading to the arc extinguish chamber is formed between the head part and the bending part. The arrangement of the bending part can make an arc channel on an arc blow-out path, so that the arc can quickly pass through the arc channel to reach the arc extinguish chamber, and the effect of quick arc extinguish is achieved. Therefore, the normally closed contact and the arc extinguishing function can be realized at the same time without enlarging the volume of the product.

The utility model discloses an arc extinguishing mechanism of a circuit breaker, which comprises a circuit breaker mounting seat, the upper surface of the circuit breaker mounting seat is fixedly connected with three groups of closing mechanisms, and arc blowing mechanisms are arranged in the closing mechanisms; the switching-on mechanism comprises a base, an input pole fixed on the rear side of the upper surface of the base and an output pole fixed on the front side of the upper surface of the base, a switching-on knife switch is hinged to the top end of the output pole, and a contact is connected to the top end of the input pole; the arc blowing mechanism comprises a gas box and a gas conveying assembly fixed to the upper surface of the gas box. According to the technical scheme, mixed gas of sulfur hexafluoride and nitrogen is adopted for arc extinguishing, the sulfur hexafluoride gas has strong electronegativity, so that free electrons in electric arcs are efficiently adsorbed, the nitrogen serves as buffer gas, the decomposition temperature of the sulfur hexafluoride is reduced, the thermal stability is improved, and the balance of arc extinguishing efficiency and environmental protection performance is achieved; the problem of arc reignition easily occurring in traditional air arc extinguishing in an outdoor humid environment is solved.

The invention provides an arc extinguishing structure, a change-over switch and electric equipment, and relates to the technical field of low-voltage electric appliances. The arc extinguishing structure comprises a shell, a mounting seat and a duct; the mounting seat is rotatably arranged on the shell, and the mounting seat is used for mounting the moving contact; the duct is arranged on one side of the mounting seat, the duct is provided with an air outlet, the air outlet is used for facing the moving contact, and the duct is used for synchronously rotating along with the mounting seat, so that airflow flows to the moving contact through the air outlet. According to the utility model, the duct and the mounting seat rotate synchronously, the air flow is blown to the moving contact through the air outlet, and the blown air flow not only can cool the moving contact, but also can generate an arc blowing effect, so that the arc extinguishing performance is improved, the ablation phenomenon of the moving contact and the static contact is avoided, and the service life of the moving contact and the static contact is prolonged.

The utility model discloses a relay which comprises a contact part and an arc blowing assembly. The contact part comprises a plurality of contact assemblies, and each contact assembly comprises a static contact and a movable contact piece which are arranged in the first direction. The moving direction of the moving contact is a second direction, and the plurality of contact assemblies are arranged along a third direction. The arc blowing assembly comprises four first permanent magnets, and the four first permanent magnets are located on the two sides of the contact part in the third direction respectively and correspond to the positions of four static contacts on the outermost side of the contact part in the third direction respectively. And along the third direction, the magnetic poles of the mutually facing surfaces of the two corresponding first permanent magnets are opposite, and the magnetic poles of the two first permanent magnets on the same side of the contact part facing the surfaces of the respective corresponding static contacts are opposite.

The present disclosure provides a relay, comprising a contact portion and an arc blowing assembly. The contact portion comprises two contact assemblies; each contact assembly comprises two stationary contacts and a movable contact piece for contacting or separating from the stationary contacts; the arrangement direction of the two stationary contacts of the contact assembly is defined as a first direction, the movement direction of the movable contact piece is defined as a second direction, the first direction is perpendicular to the second direction, and the direction perpendicular to both the first direction and the second direction is defined as a third direction; the plurality of contact assemblies are arranged in the third direction; and the arc blowing assembly comprises four permanent magnets; the four permanent magnets are respectively located on two sides of the contact portion in the first direction, and respectively correspond to the positions of the four stationary contacts; and the magnetic poles of the surfaces of two permanent magnets corresponding to the same contact assembly that face each other are opposite, and in the third direction, the magnetic poles of the surfaces of two adjacent permanent magnets that face respective corresponding stationary contacts are opposite.

The invention relates to the technical field of aluminum sheet metal hot welding, and particularly discloses an aluminum sheet metal hot welding system and welding method.The aluminum sheet metal hot welding system comprises a welding rod, a welding gun located outside a notch is fixedly installed at one end of the welding rod, an arc-shaped piece is fixedly installed at the other end of the welding rod, and the arc-shaped piece is in coupling transmission with a rotating shaft and limiting columns which are arranged on the two sides of a welding seam at equal intervals; and the end part of the single-side limiting column is attached to the side wall of the aluminum plate. The limiting columns distributed at equal intervals can be automatically matched with the arc shape of the outer wall of an aluminum plate, the guide rod is used for providing circumferential driving power for the arc-shaped piece, the welding rod is made to move in a fan shape with a molten pool as the circle center, the included angle between the welding gun and a welding seam is automatically adjusted, and curved surface information is directly transmitted through physical components; the welding seam after tungsten electrode and curved surface change is kept at a constant angle, the problems of arc blowing, abnormal argon coverage and the like are greatly reduced, and the quality of the welding seam is guaranteed.

The utility model provides a lightning arrester connected in series with air-blast arc extinguishing gaps, which comprises a zinc oxide body, a middle gap is arranged on the zinc oxide body, and a closed-loop electrode is arranged on the middle gap; the middle gap is connected with an air-blast arc extinguishing assembly, the air-blast arc extinguishing assembly is connected with a threaded electrode, and the threaded electrode is connected with a high-voltage line; the air-blowing arc extinguishing assembly comprises a connecting column, a threaded electrode is connected to the connecting column, and a middle gap is connected below the connecting column; a plurality of compression pipelines are installed in the connecting column, the compression pipelines are connected end to end and installed in the connecting column in an inclined mode, arc blowing openings are formed in the positions, corresponding to the end-to-end connection positions of the compression pipelines, of the outer wall of the connecting column, and the arc blowing openings communicate with the compression pipelines; and an arc striking table is arranged in the compression pipeline. According to the lightning arrester provided by the utility model, airflow is generated at the arc blowing port through the air-blowing arc extinguishing assembly and acts on an electric arc outside the arc blowing port, and the electric arc outside the arc blowing port is gradually lengthened under the action of the airflow, so that the effect of extinguishing the electric arc is achieved, and stable operation of an electric power system is ensured.

This application provides a method for the synergistic smelting and separation of vanadium-titanium ore using hydrogen plasma and biomass char, relating to the metallurgical field. The method includes: adding vanadium-titanium ore DRI into a closed smelting furnace to form an initial material layer at the furnace bottom; lowering a hollow graphite electrode with an axial central channel to the arc-starting position, introducing a working gas containing hydrogen and igniting the arc to form a slag-iron molten pool containing an upper layer of high-titanium slag and a lower layer of primary pig iron; using the working gas as a carrier gas to inject biomass char powder into the slag-iron molten pool; the metallic vanadium generated by the smelting reaction migrates in situ and accumulates in the molten iron, while the generated CO gas escapes from the molten pool, achieving unidirectional irreversible deep reduction of vanadium; after the smelting reaction reaches its endpoint, the high-titanium slag and vanadium-containing molten iron are separated. The method provided in this application ensures stable plasma arc blowing and the purity of vanadium-containing molten iron, reducing dependence on fossil resources while achieving the separation and utilization of vanadium-titanium ore resources.

The application discloses a relay, comprising a contact part and an arc blowing assembly. The contact part comprises two contact assemblies, each of which comprises two static contacts and a moving contact for contacting or separating the static contacts; the arrangement direction of the two static contacts of the contact assembly is defined as a first direction, the moving direction of the moving contact is defined as a second direction, the first direction is perpendicular to the second direction, and a direction perpendicular to both the first direction and the second direction is defined as a third direction; a plurality of contact assemblies are arranged along the third direction; the arc blowing assembly comprises four permanent magnets, each of which is located at two sides of the contact part along the first direction and corresponds to the position of a static contact; wherein the magnetic poles of the mutually facing surfaces of the two permanent magnets corresponding to the same contact assembly are opposite, and in the third direction, the magnetic poles of the two adjacent permanent magnets facing one side of the corresponding static contact are opposite.

The utility model relates to the technical field of circuit breakers, in particular to an arc extinguishing cover with an arc blowing function, which comprises plastic shells on two sides, the plastic shells are fixedly connected, a plurality of arc extinguishing grid sheets are arranged at the top of the plastic shells, first grooves are formed in the inner sides of the lower parts of the plastic shells, second grooves are formed in the outer sides of the lower parts of the plastic shells, and arc blowing magnetic steel is arranged in the second grooves. The arc-blowing magnetic steels on the plastic shells on the two sides are respectively N and S poles and are symmetrically arranged, protective porcelain plates are bonded in the first grooves, a contactor contact is arranged between the protective porcelain plates on the two sides, electric arcs generated in the breaking process of the contactor contact are blown to the direction of the arc-extinguishing grid sheets by magnetic field force generated by the arc-blowing magnetic steels, and the electric arcs are blocked by the arc-extinguishing grid sheets after being far away from the contactor contact. Therefore, the contactor contact is further protected, the use reliability of the arc extinguishing chamber product is improved, and the maintenance frequency of the contactor contact is reduced.

The utility model discloses an AC-DC dual-purpose bridge type arc blowing device for a contactor. The AC-DC dual-purpose bridge type arc blowing device comprises an arc blowing coil structure, an arc extinguishing grid assembly, a main contact assembly, a polarity plate and a contact plate. The arc blowing coil structure comprises a coil, a wire nose, an iron core and the like. The arc chute assembly comprises a positioning plate, a model plate, an arc striking strip and a pressing sheet; the main contact assembly comprises a static contact and a moving contact. According to the principle, in the breaking process of a main contact of the contactor, an electric arc is firstly generated between a contact point of a moving contact and a contact point of a static contact, the electric arc moves upwards along with the moving contact, and the electric arc is transferred along with movement of the moving contact; at the moment, the moving path of the current is static contact-wire nose-coil-contact plate-lower arc strike strip, a magnetic field generated when the current passes through the coil is bound by a magnetic conductive plate and an iron core and is applied between arcs, and the arcs are transferred to an arc extinguish chamber to be extinguished through the acting force of the magnetic field.

The application discloses a kind of composite swing process methods of automatic welding of vertical joint of storage tank, storage medium and purposes, belong to the field of welding automation process technology.The method is aimed at 3000m 3 The vertical butt weld welding in the construction of the following thin-wall storage tank flip method is abandoned the traditional simple left-right swing mode, and a composite swing trajectory of "trapezoidal stay-edge back-pull-quick bridge" is used.In a swing cycle, the welding gun stays at the edge of the groove and performs a vertical upward back-pull action, using arc blowing force to offset the effect of gravity;When passing through the center area of the weld, a quick bridge mode is used to reduce heat input;At the same time, the swing parameters and welding current are cooperatively controlled and the gap is self-adaptively adjusted.The application effectively solves the problem of CO2 welding vertical joint molten pool downflow and poor forming, significantly improves the weld quality and process stability, and does not need to change the existing hardware equipment, with low upgrade cost.

The invention relates to a relay. At least one of the outer side part of a first contact part and the outer side part of a second contact part is provided with a first avoiding part for avoiding each other. When the first contact part and the second contact part are separated from each other or are in contact with each other so that an electric arc is generated at the contact unit, a magnetic field formed by the first permanent magnet can play a traction role on the electric arc, and arc blowing and arc discharge effects are achieved. The electric arc moves along the contact surface of the contact unit, when the electric arc moves to the first avoiding part, the first avoiding part can play a role in separating, lengthening and blocking the electric arc, and the arcing time is shortened. Besides, the first avoiding part is arranged according to the magnetic blow-out path, so that the positions of the first contact part and the second contact part are relatively controllable, meanwhile, the contact area is relatively small, the position of an arcing point is more controlled, and the arc isolation effect is obvious. Besides, the defects that the inner cavity is ablated by an electric arc and the relay explodes and the like can be effectively avoided, the product performance can still be ensured even under the condition of high load, and the failure probability of the product can be reduced.

The invention belongs to the field of circuit breakers, and discloses a blowing arc extinguishing tank circuit breaker and a method, the blowing arc extinguishing tank circuit breaker comprises a shell, a moving contact assembly and a static contact assembly which are connected with an operating mechanism, and an enhanced air chamber is formed by the inner wall of a moving contact and the end face, close to a static arc contact, of a moving arc contact and is communicated with a blowing cavity. And the enhanced arc blowing unit pushes the moving arc contact to move towards the static arc contact during opening so as to reduce the volume of the enhanced air chamber, so that the air pressure is increased, and air blowing and arc extinguishing are realized. In the opening process, the operating mechanism drives the cylinder body and the moving contact assembly to move, so that the air blowing cavity is rapidly shrunk, high-pressure air is generated in the air blowing cavity, and air blowing and arc extinguishing are carried out through the enhanced air chamber; when the arc is extinguished, the high-pressure gas in the gas blowing cavity flows out through the gap between the contact pull rod and the piston, so that the pressure of the gas blowing cavity is reduced, the problem of resistance caused by an over-small gas blowing port in the traditional design is avoided, the motion resistance of the moving contact can be remarkably reduced, the burden of an operating mechanism is reduced, and the switching-on and switching-off speed and the overall reliability of the circuit breaker are improved.

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.

The invention relates to the technical field of circuit breakers, in particular to a plug-in circuit breaker and a control system.The plug-in circuit breaker comprises a protective shell and a tripping mechanism installed in the protective shell, a moving contact piece is arranged in the tripping mechanism, a static contact is arranged in the protective shell, and the moving contact piece is driven to move through the tripping mechanism; therefore, the moving contact piece and the static contact are in contact conduction or separated disconnection, so that the state switching of the circuit breaker is realized. According to the plug-in circuit breaker, the positive pressure gas can be generated when the circuit breaker trips out, the positive pressure gas is blown out through the gas spraying hole in the moving contact piece, arc blowing guiding is conducted on an electric arc between the moving contact piece and the static contact, the electric arc enters the arc extinguish chamber more efficiently and stably, high temperature of the arc extinguish chamber can be discharged easily, and the service life of the product is prolonged.

The utility model relates to a moving contact combination structure of a contactor, which comprises a shell, a moving contact is arranged in the shell, the moving contact comprises a moving contact and a current-conducting plate integrally formed with the moving contact, a reinforcing plate is arranged on the current-conducting plate, and the reinforcing plate is of an outer cover type structure and covers the current-conducting plate. According to the utility model, the outer cover type reinforcing plate is arranged on the current-conducting plate, so that the overall structural strength of the moving contact is remarkably enhanced, the moving contact is particularly suitable for large-current application occasions, and the problem that the traditional current-conducting plate is easy to deform and damage under strong current is effectively solved, thereby improving the reliability and the service life of the contactor, and simultaneously improving the service life of the contactor. Due to the existence of the reinforcing plate, the distribution of an electromagnetic field around the moving contact is optimized, so that the arc blowing and extinguishing effects of the electromagnetic field can be better exerted, the erosion of the arc to the contact is greatly reduced, and the service life of the contactor is further prolonged.

The invention discloses a cylindrical arc blowing lightning protection device with a lightning monitoring system, and relates to the technical field of electric power, the cylindrical arc blowing lightning protection device comprises a mounting part, one end of an insulator is fixedly connected with the mounting part, the other end of the insulator is fixedly provided with a first conductive string head, and a clamp assembly is electrically connected with the first conductive string head through a power line. The multi-chamber main body is fixedly mounted at the bottom of one side of the mounting part, a second conductive string head is fixedly mounted at one end of the multi-chamber main body, the monitoring mechanism is mounted between the insulator and the multi-chamber main body, and an analysis and judgment method for monitoring the working state of the multi-chamber main body is arranged on the monitoring mechanism. The insulator, the multi-chamber main body and the monitoring mechanism are used cooperatively, the second detection assembly can detect the working state of the multi-chamber main body to judge whether a lightning stroke phenomenon exists or not, and the first detection assembly can balance the weight of the mounting shell acting on the multi-chamber main body and can also detect the lightning stroke phenomenon of the multi-chamber main body. And the position of the multi-chamber main body can be detected.

The utility model relates to a relay, and the outer side part of a first contact part is provided with a first protruding part which protrudes in the direction away from the central axis of a movable contact spring, and the first protruding part is in contact fit with a second contact part. Or, the outer side part of the second contact part is provided with a second protruding part protruding towards the direction far away from the central axis of the movable reed, and the second protruding part is in contact fit with the first contact part. When the first contact part and the second contact part are separated from each other or are in contact with each other to generate an electric arc, a magnetic field formed by the first permanent magnet can play a traction role on the electric arc, so that the electric arc generated by the first protruding part or the second protruding part can quickly enter surrounding air, and after the electric arc is blown out, the external magnetic field is stronger; compared with the prior art, arc blowing, arc discharge, arc isolation and arc breaking are easier to realize, good arc breaking and rapid arc extinguishing effects are achieved, the arcing time can be shortened, the defects that an inner cavity is ablated by an electric arc and a relay explodes and the like can be effectively avoided, and the product performance can still be ensured even under the condition of high load.

An arc extinguishing system of a circuit breaker comprises an arc extinguishing chamber; the static contact assembly is arranged at the lower end of the arc extinguish chamber, the static contact assembly comprises a static contact, the static contact is composed of a front end U-shaped part 210 and a tail connecting part, the upper end face of the front end U-shaped part is provided with a static contact point, the tail connecting part is provided with an arc striking angle, and the arc striking angle is arranged towards the static contact point. Through the technical scheme of increasing magnetic field arc striking, arc extinguishing grid sheet equidistant arc striking, air blowing arc blowing and the like, the arc can quickly move to the arc extinguishing device, and the arc extinguishing effect is improved.