15results about How to "Increase breaking speed" patented technology

The invention provides a power converter, a relay and an optical storage system, and belongs to the technical field of circuits. In the scheme provided by the invention, the relay comprises the first electromagnet and the second electromagnet, and the armature is arranged between the first electromagnet and the second electromagnet. Based on the design, when the relay is controlled to be disconnected, the controller can control the driving circuit to supply power to the second electromagnet and cut off the power of the first electromagnet. Therefore, the attraction force generated by the second electromagnet can accelerate the movement of the armature, so that the movable contact and the static contact can be quickly disconnected. According to the scheme, the breaking speed of the relay can be increased without increasing the elastic force of the reverse spring (or the reset reed), so that the pull-in voltage and the operation power consumption of the relay can be effectively prevented from being increased, and the complexity of thermal design of the relay is prevented from being increased.

The utility model relates to the technical field of fuses, in particular to an active double-breaking fuse. The utility model discloses an active double-breaking fuse, which comprises a two-terminal electrode, a main loop, an auxiliary loop, a first controlled breaking mechanism and a second controlled breaking mechanism, the main loop and the auxiliary loop are arranged in parallel between the two-terminal electrode, a first melt is arranged in the main loop, a second melt is arranged in the auxiliary loop, and the second controlled breaking mechanism is arranged in the auxiliary loop. And the first controlled on-off mechanism and the second controlled on-off mechanism are used for receiving the excitation signal to act so as to respectively cut off the main loop and the auxiliary loop. According to the utility model, cut-off protection from low current to high current can be realized, the protection range is wide, the breaking speed is fast, the protection efficiency is high, and the reliability is high.

The present application belongs to the field of pharmaceutical preparation technology, and specifically discloses a lanthanum polystyrene sulfonate tablet and a preparation method thereof. Lanthanum polystyrene sulfonate tablet coating and powder, the powder comprising the following raw materials in parts by weight: 30-50 parts of lanthanum polystyrene sulfonate micropowder, 10-20 parts of filler, 15-25 parts of microcrystalline cellulose, 8-15 parts of hydroxypropyl methylcellulose, 0.1-0.6 parts of flavoring agent, 0.3-0.8 parts of lubricant and 0.5-0.9 parts of vitamin C. The lanthanum polystyrene sulfonate tablets prepared in this application can be dispersed in the oral cavity, and patients with chronic renal failure who have no chewing ability can swallow directly or take it with water, which is convenient for patients to take, so that the lanthanum polystyrene sulfonate micropowder can exert its medicinal effect.

A contact mechanism and a switch electrical appliance, the contact mechanism includes a Y-shaped moving contact, and a static contact composed of a first static contact and a second static contact; the moving contact includes two moving contact contact arms and a moving contact connecting arm, the first static contact is a U-shaped structure capable of reversing the current, including a first static contact plate for cooperating with the moving contact, and a first static connecting plate connected to the first static contact plate; the two moving contact contact arms respectively cooperate with the first static contact plate and the second static contact of the first static contact, so that when closed, the direction of the current flowing through the first static contact plate is opposite to the direction of the current flowing through a moving contact contact arm cooperating with the first static contact plate, and the direction of the current flowing through the second static contact is opposite to the direction of the current flowing through another moving contact contact arm cooperating with the second static contact, the double breakpoint structure improves the breaking capacity, and accelerates the breaking speed by means of the mutual repulsion between the moving and static contacts, the switch electrical appliance includes the contact mechanism of the present invention.

This invention discloses a novel liquid nitrogen switch with adjustable opening distance, comprising a housing, and further comprising: a permanent magnet operating mechanism on the outside of the housing sidewall; a main shaft rotatably connected to the permanent magnet operating mechanism; a trip spring arm fixedly connected to the main shaft; a trip spring connected at one end to the trip spring arm; a vertically arranged channel steel; a positioning block fixed to the side of the channel steel; an insulating pull rod fixedly connected to the main shaft; two protrusions opposite each other at the lower end of the insulating pull rod; two annular vertical plates on the moving contact rod, with the protrusions abutting between the two annular vertical plates; a copper-tungsten alloy electrode disposed at the front end of the moving contact rod; and a stationary conductive element disposed opposite to the copper-tungsten alloy electrode. This invention uses a permanent magnet operating mechanism as the operating mechanism, and limits the range of motion of the main shaft by changing the size of the positioning block to achieve an adjustable switch opening distance. A high-pressure glass observation window is also provided to meet the need for observing the liquid nitrogen arc in experiments.

The application relates to the technical field of circuit breakers, and discloses a residual current protection circuit breaker which comprises a shell, movable contacts and static contacts arranged in the shell, and a tripping mechanism arranged in the shell, the tripping mechanism comprising an electromagnetic tripping coil and a transmission assembly, the movable contacts and the static contacts are arranged in multiple groups, the movable contacts comprise connecting portions and conductive portions arranged at the two ends of the connecting portions, the connecting portions are rotationally arranged in the shell, the conductive portions are used for electrically connecting with the static contacts, one static contact is arranged at the two ends of each movable contact, a rotating column is arranged on each connecting portion, a connecting rod is commonly arranged on the rotating columns, a driving arm is rotationally arranged on the connecting rod, and the transmission assembly can drive the driving arm to rotate. The force transmission path is shorter and more direct, mechanical loss is small, the response speed of the tripping mechanism and the synchronization precision of action are effectively improved, and the breaking speed of the circuit breaker is accelerated.

The application relates to the technical field of low-voltage electrical apparatus, in particular to a circuit breaker, which comprises a protective shell, an arc extinguishing assembly, a moving contact for connecting an anode and a static contact for connecting a cathode; an arc extinguishing chamber is formed in the protective shell, the arc extinguishing chamber is divided into a first region and a second region; the first region is close to a tripping position of the moving contact, and the second region is close to the static contact; the arc extinguishing assembly comprises a first group of arc extinguishing fins arranged in the first region and a second group of arc extinguishing fins arranged in the second region; the number of the first group of arc extinguishing fins is less than that of the second group of arc extinguishing fins; when in the tripping position, an electric arc at the moving contact is transferred to the first group of arc extinguishing fins. The application optimizes the structure of the first group of arc extinguishing fins by improving the transfer efficiency of the electric arc on the moving contact, thereby effectively enhancing the utilization rate of the arc extinguishing fins.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an arc extinguishing system and a switching device. The arc extinguishing system is used for eliminating electric arcs generated when a moving contact and a static contact in the switching device are disconnected, and comprises an arc extinguishing chamber and an arc striking chamber communicated with the arc extinguishing chamber, a permanent magnet is arranged on one side, close to the moving contact, of the arc striking chamber in the first direction, and arc blowing plates are arranged on the two opposite sides of the permanent magnet in the second direction; the two blow-out plates and the permanent magnet form a first magnetic field, and the first magnetic field is used for quickly transferring the arc into the arc extinguish chamber; the two arc blowing plates, the permanent magnet and the moving contact form a second magnetic field, and the second magnetic field is used for attracting the moving contact, so that the moving contact is far away from the static contact. Wherein the first direction is the moving direction of the moving contact, and the second direction is perpendicular to the first direction. The arc extinguishing system can drive the arc to rapidly move into the arc extinguishing chamber through the external magnetic field for arc extinguishing, can improve the rapid breaking capacity between the moving contact and the static contact, reduces the risk of arc breakdown and reignition, and is good in arc extinguishing effect.

This utility model discloses a moving spring component and a relay. The moving spring component includes a conductive bridge plate and multiple moving spring components. Each moving spring component includes a moving spring sheet and a moving contact. The multiple moving spring components are arranged sequentially along the length of the bridge plate, and the moving spring sheets of each moving spring component are respectively connected to the bridge plate. The moving spring sheets of each moving spring component are forked to form multiple elastic support pieces arranged side by side along the length of the bridge plate, and each elastic support piece is provided with the moving contact. Each moving spring component of this utility model can realize a multi-contact parallel design. Since multiple elastic support pieces are formed from the same moving spring sheet, not only is the installation process simplified, but the flatness is also effectively guaranteed, thereby significantly improving the synchronization of multi-contact operation.

This invention provides a lightweight circuit breaker operating mechanism, relating to the field of circuit breaker technology. The lightweight circuit breaker operating mechanism includes a circuit breaker housing, inside which a circuit-breaking mechanism is disposed. The circuit-breaking mechanism includes a rotating shaft rotatably disposed inside the circuit breaker housing, a rotating plate fixedly connected to the outer side of the rotating shaft, a first connecting rod hinged to one side of the rotating plate, and a handle push rod hinged to one side of the first connecting rod. The rotating shaft is fixedly connected inside the circuit breaker housing, the handle push rod is rotatably connected to the rotating shaft, an armature is fixedly disposed on the inner side of the handle push rod, and a permanent magnet is fixedly disposed on the outer side of the circuit breaker housing. A spring is disposed on the outer side of the rotating shaft, with one end of the spring fixedly connected to the rotating shaft. In this invention, while the moving contact gains power and separates from the outer side of the stationary contact, the stationary contact can undergo a small range of displacement. Furthermore, the tension generated when the spring contracts can accelerate the movement of the moving and stationary contacts, thereby improving the circuit breaker's breaking speed.

A direct current contactor capable of executing large current breaking for multiple times comprises a shell, a driving system, a contact system, an electronic ignition assembly and a telescopic action execution assembly. The action execution assembly is arranged in the shell corresponding to the movable contact plate; the electronic ignition assembly is arranged at the top of the shell corresponding to the action execution assembly; the electronic ignition assembly comprises an electronic ignition tube shell and at least two electronic ignition tubes, and an exhaust channel communicated with the exterior of the shell is formed in the shell wall of the electronic ignition tube shell. The action execution assembly is in sealing contact with the inner wall of the electronic ignition tube shell, and when the contact system is normally switched on and switched off, one end of the action execution assembly located in the electronic ignition tube shell seals the exhaust channel; in a normal working state, the action execution assembly and the electronic ignition assembly do not act, and the driving system drives the contact plate to move, so that the contact system performs normal opening and closing. Through the multiple independent electronic ignition tubes and the exhaust channels, multiple times of large-current breaking are achieved, and the breaking capacity and the utilization rate of the contactor are improved.

This utility model relates to a frame circuit breaker, which includes: an insulating housing comprising an arc-extinguishing chamber and an operating housing mounted to the outside of a side plate of the arc-extinguishing chamber to form an installation cavity with the arc-extinguishing chamber; a vacuum arc-extinguishing component arranged vertically inside the arc-extinguishing chamber; and an actuating mechanism movably mounted to the side plate of the arc-extinguishing chamber within the installation cavity, wherein the actuating mechanism includes a vertically extending transmission portion and an output link that is linked to the lower end of the transmission portion and extends from the installation cavity through the side plate of the arc-extinguishing chamber into the arc-extinguishing chamber and is linked to the lower end of the vacuum arc-extinguishing component, so that the transmission portion can control the vacuum arc-extinguishing component to close via the output link in response to an external closing action.

A switch assembly comprises a shell, a static contact, a movable contact knife assembly and a rotating shaft, the static contact is arranged at two ends of the shell in a central symmetry mode, the movable contact knife assembly rotates relative to the shell to form an arc-shaped rotating path b matched with the static contact for opening and closing, the movable contact knife assembly comprises the rotating shaft, the rotating shaft is fixedly provided with a movable contact knife, and the movable contact knife has a central axis L1. The rotating shaft is also provided with first magnetic members, the first magnetic members are arranged at the two sides of the moving contact knife, and the magnetic field direction of the first magnetic members is perpendicular to the central axis L1. The magnetic assembly is arranged on the outer side of the arc-shaped rotating path b and provided with a central axis L2, arc extinction is faster during breaking through cooperation of the magnetic assembly and the first magnetic piece, and meanwhile the switching-on reliability and the breaking speed are improved by means of changes of a magnetic field.

The present application discloses a full-bridge negative pressure hybrid DC circuit breaker and a control method thereof, which relate to the field of power electronics technology. The full-bridge negative pressure hybrid DC circuit breaker comprises a flow branch and a disconnecting branch; wherein the flow branch comprises at least one fast mechanical switch connected in series; the disconnecting branch comprises an active full-bridge negative pressure device and a solid-state power electronic switch connected in series with each other; the active full-bridge negative pressure device is used to transfer current from the flow branch to the disconnecting branch; the solid-state power electronic switch is used for current breaking and energy dissipation. Compared with the prior art, the present application can improve the overall integration, reliability and maintainability of the circuit breaker through modularized and redundant active full-bridge negative pressure sub-modules.

The invention discloses a polymer biological blocking remover and application thereof, and belongs to chemicals for oil fields. The polymer biological blocking remover is prepared from the following components in parts by weight: 0.1-5 parts of an organic acid coupling agent, 1-20 parts of a biocatalyst, 0.5-5 parts of an inducer, 0.01-5 parts of a bioactive aid and 65-98.39 parts of water. The gel breaker can rapidly degrade HPAM and related gel in a low-temperature environment of 50 DEG C or below, is high in gel breaking speed and small in dosage, and is suitable for oilfield sewage treatment and oily sludge treatment; the blocking remover does not contain dangerous components such as a strong oxidant and chlorobenzene, so that potential safety hazards such as fire, explosion, corrosion and highly toxic gas possibly caused by an oxidized blocking remover are avoided, and the blocking remover is safer and more environment-friendly; polymers are directly degraded through chemical action, and water-insoluble by-products are not generated like an oxidized blocking remover, so that secondary blocking of a stratum is effectively prevented; the product is good in stability, easy to store and transport, simple in field operation, simple in construction and suitable for large-scale application; the device is wider in applicable temperature range, lower in cost, higher in economic benefit and more beneficial to popularization and application.