8results about How to "Increase breaking speed" patented technology

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.

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.

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 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.