157 results about "Vacuum switch" patented technology

The invention discloses a suspension air supply module helium detection test system and method, and relates to the technical field of automobile part detection, and the system comprises a helium detection airtight cabin which is used for accommodating a suspension air supply module to be detected and forming a closed test environment; the nitrogen pre-detection module is connected with the helium detection airtight cabin and is used for pre-filling nitrogen to detect macroscopic leakage; the helium supply module is connected with the helium detection airtight cabin and used for filling helium with set pressure into the suspension air supply module; the vacuum pump is connected with the helium detection airtight cabin through a vacuum switching valve and is used for vacuumizing the helium detection airtight cabin to a preset vacuum degree; the helium detection mass spectrometer is configured to detect the helium leakage rate in the helium detection airtight cabin; and the helium recovery device is connected with the helium detection airtight cabin and is used for recovering residual helium after the test is completed. According to the scheme, the adaptability limitation of a traditional helium detection technology on a complex non-standard structure can be broken through, and the detection sensitivity and the detection efficiency of tiny leakage are improved.

According to the mechanical direct-current circuit breaker based on the variable inductor and the method, in the circuit breaker, a switch branch comprises a vacuum switch VB and a current sensor which are connected in series; the reverse injection branch is connected in parallel to the two ends of the vacuum switch VB, comprises a pre-charging capacitor, a discharging thyristor, a multi-stage series inductor and a parallel thyristor module, and is selectively connected in series with the multi-stage series inductor according to the detected fault current so as to realize variable inductance; a reverse injection current is formed to realize current zero passage and arc quenching of the VB fracture of the vacuum switch; the energy consumption branch is connected in parallel to two ends of the vacuum switch VB and is used for dissipating residual energy in the loop after the mechanical direct current circuit breaker is switched off; the controller is connected with the current sensor and the thyristors and used for judging the number of inductors needing to be input according to the rise rate and amplitude of fault current and controlling the corresponding thyristors to be switched on, and graded inductor series-in and reverse current injection of the multi-stage series inductors of the variable inductor are achieved.

The invention relates to a switch closing holding device and a vacuum switch. The device comprises a piezoelectric actuator, an energy taking coil arranged on a main loop of the vacuum switch, and a first friction surface and a second friction surface which are arranged in parallel, wherein the input end of the piezoelectric actuator is connected with the output end of the energy taking coil, the output end of the piezoelectric actuator is connected with the first friction surface, and the second friction surface is fixed on an operating mechanism transmission rod of the vacuum switch; the energy taking coil is used for sensing a current signal on the main loop and outputting a corresponding voltage signal to the piezoelectric actuator according to the current signal; the piezoelectric actuator is used for applying a driving force to the first friction surface under the condition that the change amplitude of the detected voltage signal is greater than a preset threshold value; the driving force is used for driving the first friction surface and the second friction surface to generate friction force, so that the vacuum switch is kept in a closed state under a short-circuit fault. The device can ensure that the switch is kept in a closed state during a fault.

The invention relates to a load transfer switch (1) for a load tap changer (2), comprising at least one vacuum interrupter (30), a handling element (50) which is mechanically connected to the vacuum interrupter (30) on a first end (51) and has a roller (53) on a second end (52), a handling body (10) which has a base body (11) and at least one cam (20), wherein the vacuum interrupter (30) is handled via the handling element (50) by the roller (53) being driven over the handling body (10), at least one part (21) of the cam (20) having a higher strength than the base body (11).

The application discloses a kind of vacuum switch contact ablation intelligent evaluation method based on physical information fusion, belong to vacuum circuit breaker technical field.The method of the present application includes: according to the data set of vacuum switch breaking type obtained from vacuum arc experimental data, construct physical information enhanced support vector machine to predict breaking type of working condition;Vacuum arc simulation model is extracted from each working condition Contact surface energy flow density radial distribution data, and is fitted by Gaussian function;Based on the energy flow density radial distribution curve obtained by fitting, a vacuum arc simulation data set is constructed, and a physical information enhanced Gaussian process regression is constructed to predict the energy flow density of the working condition;Combining the heat transfer model to solve the radial distribution of contact surface temperature, further quantitatively evaluate the ablation degree of contact surface, and output the ablation degree level.The present application embeds the physical law of vacuum arc into machine learning model, realizes the breaking type prediction, energy flow density prediction and contact temperature rise calculation and ablation degree calculation and evaluation.

The application relates to a medium-voltage air-charge cabinet control panel and a control method for dynamically displaying the working state of a bus, wherein the control panel is provided with an LED lamp strip for displaying the working state of the bus; the LED lamp strip for displaying the working state of the bus comprises three lamp strip bands; the three lamp strips are respectively displayed as yellow, green and red; three sensors are arranged in the control cabinet for each phase of the bus; the sensors for each phase comprise an upper inlet bushing sensor, a vacuum switch tube lower port sensor and a lower outlet wire bus bushing end sensor; secondary voltage signals are sensed by the sensors, are led out from the cabinet body through an aviation plug, and three sensors are arranged for each phase; the sensors are connected with the lamp strips; each sensor controls a section of the lamp strip. The medium-voltage air-charge cabinet control panel and the control method can faster find problems, more accurately display fault positions, timely eliminate faults, are safe and reliable, and guarantee safe operation of equipment.

The invention relates to a high-voltage circuit breaker (1), comprising a vacuum switching tube (7) which is electrically connected to two high-voltage terminals and which is designed to establish an electrical connection in accordance with a mechanical switching actuation (8), for which purpose the vacuum switching tube (7) has a switching contact (10) which is movably arranged in a tube housing (9), characterized by a closing spring (15) which is arranged in the tube housing (9) and which is arranged in the tube housing (9), the invention relates to a switching device (1) comprising a switching contact (10), a closing spring (13) configured to transmit a mechanical switching operation (8) to the switching contact (10), a contact hold-down spring (13) configured to maintain a closing state of the switching contact (10), the closing state being occupied by the switching contact (10) after the switching operation (8) is transmitted to the switching contact (10), a spring energy store (26) configured to store the mechanical switching operation (8) on the switching contact (10), the spring energy store (26) is designed to be at least partially tensioned immediately before the switching contact (10) enters the closed state, and wherein the spring energy store (26) is designed to at least partially transmit the stored tensioning energy to the contact pressure spring (13) when the switching contact (10) enters the closed state. The invention also relates to a high-voltage power switching device (2) and a method.

The utility model relates to a bus socket and a normal pressure switch cabinet, an isolation switch device in a cabinet body is arranged above a vacuum switch unit, the bus socket comprises an insulator and a central conductor, the insulator is provided with a plugging port and a second end portion, the central conductor comprises a plugging conductive rod correspondingly arranged in the plugging port, and the second end portion is provided with a second end portion. The plug-in conducting rod is connected with an electric connecting piece, the electric connecting piece is provided with an electric connecting portion corresponding to the second end portion, the insulator comprises a plug-in seat portion with a plug-in port formed in one end, a 7-shaped connecting lever is integrally formed on one transverse side of the plug-in seat portion and comprises a lateral protruding portion protruding on the transverse side wall of the plug-in seat portion, and the plug-in seat portion is provided with a plug-in port formed in the other end of the plug-in seat portion. The end part of the longitudinal handle part forms a second end part, the longitudinal handle part extends along the direction opposite to the direction of the plugging port, the second end part on the longitudinal handle part is longer than the end part of the plugging seat part, and the longitudinal handle part of the bus socket extends to an electric connection end at the top of the disconnecting switch device and is electrically connected with the electric connection end. The bus socket is reasonable in structural design and convenient to install and use.

The invention provides a circuit breaker with a current-limiting reactor LR switching function. The circuit breaker comprises a mechanical switch K1, a first thyristor D1, a current-limiting reactor LR, a coupling inductor LO and a power supply VDD, the positive electrode of the mechanical switch K1 is respectively connected with the current limiting reactor LR, the first thyristor D1 and the power supply VDD; the negative electrode of the mechanical switch K1 is respectively connected with the current limiting reactor LR, the first thyristor D1 and the vacuum switch K2 through the primary side of the coupling inductor LO; the negative electrode of the vacuum switch K2 is connected with the negative electrode of the power supply VDD through the load R. When the circuit breaker is in rated operation, current only passes through the mechanical switch and the vacuum switch, so that the system loss is reduced, and the energy transmission efficiency of the circuit breaker is improved; in a fault state, the current limiting reactor is put into use, so that the effect of limiting the rising rate of the fault current of the system can be achieved, and favorable guarantee is provided for fault removal of the circuit breaker; and the speed of transferring the fault transient current from the mechanical switch to the current limiting reactor is improved.

The utility model relates to a shielding device for a vacuum switch and the vacuum switch with the shielding device. The shielding device comprises a pair of shielding plates, each shielding plate comprises a main body part which is of a straight plate structure extending in the vertical direction and is arranged opposite to the transmission device in the transverse direction; a pair of connecting parts which are respectively arranged at two longitudinal ends of the main body part adjacent to the vertical end side of the arc extinguishing device, and each connecting part is configured to extend away from the main body part in the vertical direction and extend towards the other shielding plate in the transverse direction; the first arc-shaped extension parts are arranged on the two longitudinal sides of the main body part and the vertical end side far away from the arc extinguishing device; the pair of second arc-shaped extension parts are respectively arranged on the transverse end sides, back on to the other shielding plate, of the connecting parts and the vertical end sides, far away from the main body part, of the connecting parts; the curvature radius of the first arc-shaped extending part ranges from 8 mm to 20 mm, and the pair of second arc-shaped extending parts continuously extend from the two longitudinal sides of the first arc-shaped extending part respectively and are in smooth transition connection with the first arc-shaped extending part.

The utility model provides a self-locking mechanism for a high-voltage vacuum switch. According to the self-locking mechanism for the high-voltage vacuum switch, a high-voltage vacuum switch body is installed at the top of a buffering bottom frame, a brake shaft is installed on one side of the high-voltage vacuum switch body through a brake head, a soft sleeve is arranged at the position, close to the other end, of the outer surface of the brake shaft, and a fixing ring is installed on the outer surface of the brake shaft; mounting bolts are fixedly connected to the top and the bottom of the fixing ring, clamping rings are mounted at the positions, close to one sides, of the outer surfaces of the mounting bolts, mounting openings are formed in the tops and the bottoms of the clamping rings, and fixing discs are fixedly connected to the opposite faces of the interiors of the mounting openings; the other end of each fixing disc is provided with a connecting bolt through a reset spring. According to the self-locking mechanism for the high-voltage vacuum switch provided by the utility model, bidirectional self-locking of the brake shaft on the high-voltage vacuum switch body can be realized through the structure, and the safety of the high-voltage vacuum switch body after opening and closing can be improved.

The invention discloses a mechanochemical planetary high-energy machine for powder grinding, a planetary grinding blade assembly performs multidirectional high-speed rotation in a tank body to form efficient mechanochemical acting force, the powder grinding efficiency is remarkably improved, and in the grinding process, the powder can be ground by adjusting the rotating speed of a driving motor, controlling the atmosphere environment through an air inlet / outlet system and the like. Precise control over material granularity, uniformity and chemical modification is achieved, so that the product quality is improved, the feeding and discharging mechanism integrates a plurality of modules such as a material mixing fan, a feeding assembly, a material returning assembly, a discharging assembly and a mixed material returning assembly, automatic feeding, grinding, separating, material returning, discharging and storing processes are achieved, and the production efficiency is improved. And intelligent control components such as the vacuum switching valve, the feeding rotary valve, the discharging intelligent control air door and the separation intelligent control air door are arranged, so that the whole technological process can be accurately controlled, manual intervention is reduced, and the production continuity and stability are improved.

The utility model relates to the technical field of vacuum switches, in particular to a heat dissipation type solid-sealed polar pole which comprises a vacuum arc-extinguishing chamber, an upper outgoing line, an insulating pull rod, a lower outgoing line electrically connected with a moving contact of the vacuum arc-extinguishing chamber through flexible connection, a resin shell and a heat dissipation mechanism used for cooling the vacuum arc-extinguishing chamber. The heat dissipation mechanism comprises an inner heat conduction ring arranged on the outer wall of the vacuum arc-extinguishing chamber in a sleeving mode, an outer heat conduction ring arranged on the outer wall of the resin shell in a sleeving mode, a plurality of heat conduction rods evenly distributed outside the vacuum arc-extinguishing chamber in the circumferential direction, a plurality of heat dissipation fins evenly distributed outside the resin shell in the circumferential direction and an insulating cylinder covering the heat dissipation fins in an annular mode, and the inner ends of the heat conduction rods are connected with the inner heat conduction ring. The outer end of the heat conduction rod penetrates through the resin shell to be connected with the outer heat conduction ring, the insulating cylinder is a conical cylinder with two open ends, one vertical edge of the cooling fin is connected with the outer wall of the resin shell, and the other vertical edge of the cooling fin is connected with the inner wall of the insulating cylinder. According to the scheme, the cooling rate of the vacuum arc-extinguishing chamber can be accelerated, and the service life of the solid-sealed polar pole is effectively prolonged.

The utility model discloses a 31.5 kA short-time withstand current vacuum switch tube for increasing creepage distance along a surface, which comprises a vacuum switch tube main body, the vacuum switch tube main body is composed of a ceramic shell, a movable conducting rod, a static conducting rod, a movable end sealing cover, a static end sealing cover, a corrugated pipe, a shielding cover, a movable contact and a static contact, the ceramic shell is of a cylindrical structure, the length of the ceramic shell is 130 + / -0.2 mm, and the width of the corrugated pipe is larger than that of the movable end sealing cover. The outer side face of the porcelain shell is of a corrugated structure, the corrugated structure is provided with wave crests and wave troughs, the diameter of the wave crests is 92 mm, the diameter of the wave troughs is 83 mm, and the creepage distance, formed by the wave crests and the wave troughs, of the outer side face of the porcelain shell is 244 mm. According to the utility model, through the arrangement of the overall structure, the creepage distance is increased, so that the vacuum switch tube can be used in an environment with an altitude of 1000 meters or below, the application range of the vacuum switch tube is expanded, and the stability of the vacuum switch tube is improved.

The utility model discloses a circuit breaker switch for a 24kV circuit breaker switch cabinet, which comprises a vacuum switch and an isolating switch, the vacuum switch comprises a vacuum arc-extinguishing chamber, the isolating switch comprises an isolating switch static contact, the isolating switch static contact is lapped at the static end of the vacuum arc-extinguishing chamber through a connecting device, the connecting device comprises a pressing rod and a contact support, and the pressing rod is in lap joint with the contact support. The compression bar is in threaded connection with the contact support, the compression bar is movably connected with the contact support, and the static contact and the static end of the disconnecting switch are kept in a lap joint state and the fixed height of the vacuum arc-extinguishing chamber is adjusted through the movement of the compression bar, so that the height of the compression bar can be adjusted in the vertical direction, and the fixed height of the vacuum arc-extinguishing chamber is further adjusted; the pressure of the moving contact at the moving end of the three-phase vacuum arc-extinguishing chamber and the wear compensation over-travel of the moving contact are adjusted, so that the lapping effectiveness of the contact within the allowable wear extent range of the contact is ensured.

The invention discloses a vacuum switch for a flexible direct current system and a closing method, and relates to the technical field of vacuum switches. The static end assembly is arranged at one end of the insulating shell and comprises a static conducting rod, a static contact connected to the inner end of the static conducting rod and a static end cover connected with the insulating shell in a sealing manner; the moving end assembly is arranged at the other end of the insulating shell and comprises a moving conductive rod, a moving contact connected to the inner end of the moving conductive rod and a moving end cover connected with the insulating shell in a sealing manner; the sealing element is arranged between the movable conducting rod and the movable end cover; wherein one of the static contact and the moving contact is of a conical structure, and the other one of the static contact and the moving contact is of a conical nest structure matched with the conical structure. According to the vacuum switch, the problems of huge size, insufficient action speed and low closing reliability caused by huge electric repulsive force when a traditional vacuum switch closes extra-large short-circuit current of a flexible direct current system can be solved.

The application relates to a method and device for determining the breaking capacity of a vacuum switch device. The method comprises: obtaining critical current data of the vacuum switch device at each time when executing a simulation opening command; obtaining estimated current data of a target circuit to be cut off by the vacuum switch device; determining a target separation time range corresponding to the vacuum switch device; determining an adjustment strategy for adjusting the estimated current data according to the difference between the short-circuit current of the target circuit at each separation time within the target separation time range and the critical current data at the corresponding separation time; adjusting the estimated current data according to the adjustment strategy, and continuing the determination step of the adjustment strategy until the adjustment amount in the adjustment strategy is less than a preset adjustment amount, and determining the breaking capacity of the vacuum switch device according to the estimated current data when the adjustment amount is less than the preset adjustment amount. The method can improve the evaluation accuracy of the breaking capacity of the vacuum switch device.

The invention relates to a vacuum switch (1). The vacuum switch (1) comprises a vacuum switching tube (3) with a tube housing (5) and two contact elements (7, 9) projecting into the tube housing (5), of which a first contact element (7) is movable relative to the tube housing (5) and the second contact element (9) between a first switching position, in which the first contact element (7) is in contact with the second contact element (9), and a second switching position, in which the first contact element (7) is separated from the second contact element (9). Furthermore, the vacuum switch (1) comprises a braking unit (11) configured to brake the movement of the first contact element (7) from the first switching position to the second switching position, and which is arranged near the tube housing (5).

The invention relates to a method for calibrating a pressure measurement, comprising the steps of: providing at least one vacuum switching tube (1); applying an electric field (23) and a magnetic field (24) to the interior (26) of the vacuum switching tube at a plurality of different pressures (p x ) of the vacuum in the interior space, such that a gas discharge is generated in the interior space, wherein a plurality of gas discharges are generated at each of the pressures, wherein the electric field in the interior space has an orientation different from the magnetic field; Determine for each of the gas discharges a delay (Δt) which is the time interval between a time zero (t0) and a generation time (t1), wherein the time zero is the first time in time at which the electric field and the magnetic field are present, wherein the gas discharge is generated at the generation time; Determine for each a distribution (fp x) the delays at each of the pressures; determining a confidence interval (C x ) the distribution at each of the pressures, with a lower limit (uG) for each x ) and an upper limit (oG x ); Determining an upper calibration function (oF) where an upper pressure of the vacuum is determined based on the upper limits from the respective delays (Δt), the majority of gas discharges for each of the pressures px.

The utility model discloses a thermostable vacuum switch tube contact structure, which relates to the technical field of vacuum switch tube contact structures, and comprises a vacuum tube, a sealing sleeve is arranged on the vacuum tube, a static contact and a moving contact are arranged in the vacuum tube, iron core assemblies are arranged on the static contact and the moving contact, one end of the static contact is provided with a static end conducting rod, and the other end of the static end conducting rod is provided with an iron core assembly. One end of the moving contact is provided with a moving conductive rod, and the moving conductive rod is provided with an elastic sheet. According to the utility model, through the arrangement of the elastic sheet, the elastic sheet instantly generates deformation and changes from downward bending to upward bending, so that the moving contact and the static contact are rapidly driven to be separated through the spherical surface, arc generation caused by insufficient contact and separation speed of the moving contact and the static contact is avoided, and the working safety of the contact structure is guaranteed; through the mutual cooperation of the longitudinal groove, the magnet and the arc striking groove, the electric arc is led out through the arc striking groove and enters the longitudinal groove after being generated at the center of the contact, thereby preventing the electric arc from gathering, achieving the rapid arc extinguishing, and improving the breaking capacity.

The utility model discloses a kind of high-purity membrane box absolute pressure vacuum switches, it is related to high-purity technical field, including lower connector, the middle part of lower connector is provided with vertical through-hole, vertical through-hole is fixed with flow guide pipe inside, the upper end of flow guide pipe is fixed with membrane box assembly, the inner chamber of flow guide pipe and membrane box assembly is communicated, the upper end of lower connector is threadedly connected with upper connector, the upper end of lower connector inside is threadedly connected with switch fixing sleeve, the surface of switch fixing sleeve is threadedly connected with limiting nut, the lower end in switch fixing sleeve inside is fixed with microswitch by switch fixed pin, the upper end of microswitch and membrane box assembly is inlaid, the upper end of upper connector is fixed with serial port connector by two hexagonal fixed screws, can accurately monitor tiny absolute pressure change, and can avoid damage under instantaneous overvoltage or impact condition.

This utility model discloses a high-voltage-resistant vacuum switch tube, comprising a metal outer tube, a ceramic inner tube, and a ring. The outer wall of the ceramic inner tube is fitted with the metal outer tube, and the two ends of the ceramic inner tube are fitted with rings. The switch tube body is disposed inside the ceramic inner tube, and the two ends of the switch tube body extend to the outside of the rings and are fixedly connected to contacts. The lower surface of the ring has a protrusion that extends into the metal outer tube. Heat-conducting ring blocks are fixedly connected at equal intervals to the inner wall of the metal outer tube. The vacuum environment between the metal outer tube and the ceramic inner tube improves the overall voltage resistance level and effectively blocks the discharge path under high voltage. At the same time, the elastic metal sheet is inclined to increase the contact area with the ceramic inner tube. During operation, the elastic metal sheet can continuously remove the heat generated by the resistance and arc of the switch tube body, avoiding heat accumulation and temperature exceeding the limit, ensuring that the switch tube body operates stably within a suitable temperature range, and improving the overall reliability of the switch tube.

The invention discloses a multi-break vacuum switch device for a circuit breaker, which relates to the field of circuit breakers and comprises a transmission and support structure, a through-flow break structure and an arc extinguishing break structure. The transmission and support structure comprises a moving end contact seat, a static end contact seat, a pull rod, a spring cylinder, a spring, a nut, a solenoid, a screw rod, an insulation connecting rod, a moving end support seat and a static end support seat. The through-flow fracture structure comprises a moving end external moving contact, a moving end external static contact, a static end external static contact and a static end external moving contact which are arranged in pairs; the arc extinguishing fracture structure comprises a vacuum cavity formed by a moving end cover plate, a porcelain shell, an internal main shielding cover and a static end cover plate, and an internal moving contact and an internal static contact which are located in the vacuum cavity. During closing operation, the arc extinguishing fracture is closed firstly, and then the through-flow fracture is closed; during opening operation, the through-current fracture is separated firstly, and then the arc extinguishing fracture is separated.

The application relates to a linkage device of an explosion-proof high-voltage vacuum switch with a built-in locking mechanism, which comprises an explosion-proof cabinet and a circuit breaker core, the explosion-proof cabinet is internally provided with a static contact, the circuit breaker core is slidably arranged in the explosion-proof cabinet, the circuit breaker core is provided with a moving contact opposite to the static contact, the linkage device comprises a driving rod, a main rod, a sliding rod and a rotating disc, the explosion-proof cabinet is provided with a door cabinet plate for opening the explosion-proof cabinet and a fixed plate adjacent to the door cabinet plate, the main rod and the sliding rod are arranged in the explosion-proof cabinet and are parallel to the door cabinet plate, the driving rod is arranged on the explosion-proof cabinet and is perpendicular to the door cabinet plate, the driving rod drives the main rod to rotate, the driving rod has a switch output end for driving the circuit breaker core to slide and forming the contact between the static contact and the moving contact, the rotating disc is arranged on the main rod and synchronously rotates with the main rod, the sliding rod is arranged in parallel with the main rod and abuts against the rotating disc, the rotating disc is provided with a protrusion and forms the sliding of the sliding rod, and the other side of the sliding rod relative to the rotating disc is provided with a cabinet door locking end, the cabinet door locking end forms the fixation between the door cabinet plate and the fixed plate.

The invention discloses an outdoor high-voltage vacuum switch, which comprises a wire inlet side voltage transformer pre-embedded in a left insulator and a pluggable wire outlet side voltage transformer mounted on a right insulator, an isolating switch chamber is arranged in the right insulator, an observation window is arranged below the isolating switch chamber, and the observation window is connected with the left insulator and the right insulator. The inner wall of the isolation switch chamber is provided with a thin-wall area, the outer side of the isolation switch chamber is provided with a pressure relief port, and the outer side of the left insulator is provided with a resonance elimination resistor or a zero sequence voltage transformer. An external voltage transformer and an external electricity taking transformer are omitted, and the purposes of simple structure, low cost and small size are achieved.

The invention relates to a short-stroke quick transmission mechanism for a dual-power change-over switch, which comprises a switch casing for a loop device of a standby power supply, a transmission bearing used for disconnecting a normal power supply and connecting the normal power supply to the standby power supply is arranged in the switch casing, and a T-shaped clasping arm is rotatably connected to the outer side of the transmission bearing. A vacuum switch tube is arranged in the switch machine shell, a compensation mechanism is arranged between the vacuum switch tube and the T-shaped clapping arm and comprises a positioning pin, a threaded groove is formed in the outer side of the positioning pin, a pressing piece is arranged at the top of the positioning pin in a sleeving mode, and the compensation mechanism further comprises a boss. Movable conducting rods are arranged at the front end of the boss and the front end of the vacuum switch tube, outer spherical shells are fixedly connected to the ends of the movable conducting rods, inner spherical shells are rotationally connected to the inner sides of the outer spherical shells, and an inner threaded tube is rotationally connected between the two inner spherical shells. The butt joint dislocation problem caused by insufficient machining precision and assembly errors is effectively solved, it is guaranteed that the transmission process of the T-shaped clapper arm is stable and not blocked, and the transmission stability is enhanced.

The utility model discloses a vacuum switch tube positioning welding assembly die, which relates to the technical field of assembly dies and comprises a supporting bottom plate, an upper supporting plate is fixedly connected onto the supporting bottom plate, the top of the upper supporting plate is connected with the fixed end of a first telescopic rod, and the telescopic end of the first telescopic rod is connected with a lifting plate. The lower part of the lifting plate is in threaded connection with an upper auxiliary mounting block; the side face of the supporting bottom plate is connected with the fixed end of a second telescopic rod, the telescopic end of the second telescopic rod is connected with a centering clamping assembly, two symmetrical clamping arms are arranged above the centering clamping assembly, and clamping jaws are further fixedly connected to the clamping arms. By arranging the centering clamping assembly, the two symmetrical clamping arms are pulled by the centering clamping assembly to synchronously slide towards the middle, so that the vacuum switch tube is centered.

The invention relates to a vacuum switching tube (1) and a vacuum switch (40) having a vacuum switching tube (1). The vacuum switching tube (1) comprises a tubular housing (3), a contact element (7) and a bellows (9). The contact element (7) protrudes through a housing opening (13) of the tubular housing (3) into a tube volume (11) surrounded by the tubular housing (3) and is movable relative to the tubular housing (3) along a longitudinal axis (15) of the contact element (7). The bellows (9) has a first end (21), which is fixedly connected to the contact element (7), and a second end (23), which is fixedly connected to the tubular housing (3) and surrounds the housing opening (13). In this case, the bellows (9) is embodied in a multi-layer manner.