31results about How to "Reduced residual pressure" patented technology

The invention provides an intelligent identification method of 10kV line short-circuit fault voltage. The method is characterized in that a double-CPU feeder terminal formed by a main CPU and a detecting CPU is built, the residual voltage or instantaneous voltage during a 10kV line short-circuit fault is fast identified through the feeder terminal, a locking condition is provided for feeder terminal fault isolation, intelligent diagnosing can be performed and corresponding fault information can be provided when a 10kV power supply voltage transformer outside the feeder terminal and a related detecting loop fail, and a user can be timely reminded to turn on or turn off complete equipment to guarantee that the equipment is in a good operation state. By the intelligent identification method good in social benefit, local feeder automatic fault isolation and power restoration success rate increasing are benefited.

The invention discloses an SPD backup protection circuit breaker, which is used for SPD backup protection. When an SPD is abnormal, the backup circuit breaker protection device can provide inverse time-lag protection and instantaneous protection, breaks power frequency current, protect the SPD from being damaged or enables the SPD to quickly disconnect from a power supply loop the moment the SPD is damaged, so that the SPD can be subjected to preventive protection, and accidents of fire and the like are prevented. The backup circuit breaker protection device comprises a housing, a handle, upper and lower wiring terminals, an installation card, a tripping mechanism, a moving contact, a static contact and an arc extinguish chamber. The backup circuit breaker protection device also comprisesa discharging gap, a positive temperature coefficient resistor, a bimetal piece and an electromagnetic tripper. The backup circuit breaker protection device can protect the SPD and does not influencethe SPD's protection function for protected equipment.

The invention discloses an SPD backup protection circuit breaker, which is used for the backup protection of the SPD. When the SPD is abnormal, it can provide inverse time protection and instantaneous protection, break the power frequency current, protect the SPD from damage or quickly separate it from the power supply circuit when the SPD is damaged, and provide preventive protection for SPD failure to avoid fire, etc. Disasters happen. The invention includes a shell, a handle, upper and lower terminals, an installation card, a tripping mechanism, a moving contact, a static contact, an arc extinguishing chamber, and also includes a discharge gap, a positive temperature coefficient resistor, a bimetal sheet and an electromagnetic tripping device . The invention can protect the SPD without affecting the function of the SPD to protect the protected equipment.

The present invention is directed to a capsule (1) for containing a food ingredient, suitable for being inserted in a food preparation machine (2), said capsule having a rigid body structure defining a closed compartment wherein said ingredient is mixed with a fluid introduced under pressure by said machine in order to produce a food product, said body walls defining an external volume Vcaps, and an internal compartment volume Vcomp, characterized in that said capsule body structure further comprises at least one portion (14) having a shape, dimensions and / or being made of a material such that it is elastically deformable and that Vcaps and Vcomp can be reversibly reduced by at least 3% by applying an elastic compression along at least one dimension of said capsule at the time said capsule is functionally inserted within said machine, said elastic body wall portion allowing the capsule to flex back to its initial volumes Vcaps and Vcomp after extraction, such that residual pressure within said capsule is reduced.

The invention provides a novel overvoltage absorbing device, and relates to the technical field of overvoltage suppression of an electric power system. The absorber is characterized by comprising nonlinear resistors FR1 and FR2, a high-voltage fuse RD, a capacitor C, and a resistor R. One end of the nonlinear resistor FR2 is used as a port, and the other end is connected with one end of the resistor R, one end of the capacitor C, and one end of the nonlinear resistor FR1. The other end of the resistor R, the other end of the capacitor C, and the other end of the nonlinear resistor FR1 are respectively connected with one end of the high-voltage fuse RD. The other end of the high-voltage fuse RD is used as a port. The absorber has good energy gathering and energy absorbing effects, and can effectively suppress atmosphere overvoltage, switching overvoltage, and relatively large amplitude arc grounding overvoltage, and ferromagnetic resonance overvoltage.

This invention relates to a method for producing insulated lightning protection of transmission and distribution line equipment. The invented method for producing explosion, lightning protection devices of unit combined serial gap voltage-sharing which includes its main body part and fixing sealed sheel. The main body part constitutes at least a set of discharging gap valves in effective discharging large panel porous ventilation type discharging gap valve plate clamping hollow insulation pads connected in series with at least a set of hollow ventilation metal zinc oxide composite stuck with insulated tubes and ventilation holes at the center adhered with ventilation insulating arc shield location disks around its waist, available in the production of lightning protection explosion proof insulators and explosion proof lightning arrestors.

A high-capacity overvoltage absorber relates to the technical field of overvoltage inhibition of the power system. The high-capacity overvoltage absorber comprises non-linear resistors FR1 and FR2, a high-voltage fuse RD, a capacitor C and a resistor R, wherein one end of the non-linear resistor FR2 serves as a port while the other end of the non-linear resistor FR2 is connected with one end of the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1; the other end of the resistor R, the other end of the capacitor C and the other end of the non-linear resistor FR1 are connected with one end of the high-voltage fuse RD; and the other end of the high-voltage fuse RD serves as another port. The high-capacity overvoltage absorber is good in the voltage limiting effect and low in residual voltage value, and has very good energy collecting and absorbing effects.

A high-capacity overvoltage absorber relates to the technical field of power system overvoltage suppression. It is characterized in that it includes non-linear resistors FR1, FR2, high voltage fuse RD, capacitor C, and resistor R; one end of the non-linear resistor FR2 is used as a port, and the other end is connected to one end of the resistor R, one end of the capacitor C, and the non-linear resistor FR1 respectively. One end is connected, the other end of the resistor R, the other end of the capacitor C, and the other end of the non-linear resistor FR1 are respectively connected to one end of the high-voltage fuse RD, and the other end of the high-voltage fuse RD is used as the other port. It has a good function of energy gathering and energy absorption, and can effectively suppress atmospheric overvoltage, operating overvoltage, arc grounding overvoltage and ferromagnetic resonance overvoltage with large amplitude.

The invention provides an intelligent identification method of 10kV line short-circuit fault voltage. The method is characterized in that a double-CPU feeder terminal formed by a main CPU and a detecting CPU is built, the residual voltage or instantaneous voltage during a 10kV line short-circuit fault is fast identified through the feeder terminal, a locking condition is provided for feeder terminal fault isolation, intelligent diagnosing can be performed and corresponding fault information can be provided when a 10kV power supply voltage transformer outside the feeder terminal and a related detecting loop fail, and a user can be timely reminded to turn on or turn off complete equipment to guarantee that the equipment is in a good operation state. By the intelligent identification method good in social benefit, local feeder automatic fault isolation and power restoration success rate increasing are benefited.

The invention relates to the technical field of safety belt reactor and particularly relates to an emergency locking type safety belt retractor with a pretensioning function, which comprises a rack device, a power device, a coil spring assembly, a pre-tensioning gear, a U-shaped frame, a belt coiling cylinder, a force limiting rod, a check wheel, a locking claw, a return spring, a belt sensing assembly, a vehicle sensing assembly and a cover. The emergency locking type safety belt retractor is characterized in that shafts at the left end and the right end of the pre-tensioning gear are respectively connected a shaft hole in the coil spring assembly and the left end of the force limiting rod in the belt coiling cylinder; the rack device in linear movement is arranged beside the pre-tensioning gear, one end of the rack device corresponds to the meshing position of the pre-tensioning gear, the rack device is meshed with the pre-tensioning wheel in the running process of the rack device, and the power device is arranged at the other end of the rack device. Compared with the prior art, the emergency locking type safety belt retractor has the advantages that as a clutch assembly is not arranged, the structure is compact, and also the volume of a pre-tensioning mechanism is reduced; and as a clutch is eliminated, the energy loss is reduced, the pre-tensioning time is shortened, and further the pre-tensioning efficiency is improved.

The invention provides a system overvoltage inhibition device and relates to the technical field of electric power system overvoltage absorption. The system overvoltage inhibition device comprises a high-voltage current limiting fuse, a voltage transformer, a high-energy-capacity overvoltage absorber, a high-voltage fuse, an intelligent resonance elimination switch and a microcomputer integration protection apparatus. One end of the high-voltage current limiting fuse and one end of a rapid fuse are respectively connected with a high-voltage isolation switch. The other end of the high-voltage current limiting fuse is connected with one end of the high-energy-capacity overvoltage absorber. The other end of the high-energy-capacity overvoltage absorber is grounded. The other end of the rapid fuse is connected with the voltage transformer. The voltage transformer is further connected with the intelligent resonance elimination switch and the microcomputer integration protection apparatus. The microcomputer integration protection apparatus is further connected with the intelligent resonance elimination switch. The intelligent resonance elimination switch is further grounded. The system overvoltage inhibition device provided by the invention is capable of replacing a voltage transformer cabinet; the detection, metering and protection capabilities and the protected capability of the voltage transformer cabinet is improved; in addition, a system peak overvoltage is inhibited, the residual voltage value is low, and accurate and rapid resonance elimination is realized.

The invention discloses a system overvoltage suppression device and relates to the technical field of power system overvoltage absorption. The system overvoltage suppression device comprises a high-voltage current limiting fuse, a voltage transformer, a high-energy-capacity surge absorber, a high-voltage fuse, an intelligent resonance elimination switch and a microcomputer comprehensive protection device, wherein one end of the high-voltage current limiting fuse and one end of a high-speed fuse are respectively connected to a high-voltage isolator; the other end of the high-voltage current limiting fuse is connected to one end of a high-energy-capacity overvoltage protector; the other end of the high-energy-capacity overvoltage protector is connected to the ground; the other end of the high-speed fuse is connected to the voltage transformer; the voltage transformer is respectively connected to the intelligent resonance elimination switch and the microcomputer comprehensive protection device; the microcomputer comprehensive protection device is connected to the intelligent resonance elimination switch; and the intelligent resonance elimination switch is connected to the ground. The system overvoltage suppression device can replace a voltage transformer cabinet and prefects detection and measurement, protective capability and protected capability of the voltage transformer cabinet, the system peak overvoltage can be suppressed, and the residual voltage value is low and the resonance can be eliminated accurately and quickly.

An absorbing device with energy gathering and energy absorbing functions relates to the technical field of power system overvoltage suppression. It is characterized in that it includes non-linear resistors FR1, FR2, high voltage fuse RD, capacitor C, and resistor R; one end of the non-linear resistor FR2 is used as a port, and the other end is connected to one end of the resistor R, one end of the capacitor C, and the non-linear resistor FR1 respectively. One end is connected, the other end of the resistor R, the other end of the capacitor C, and the other end of the non-linear resistor FR1 are respectively connected to one end of the high-voltage fuse RD, and the other end of the high-voltage fuse RD is used as the other port. It has a good function of energy gathering and energy absorption, and can effectively suppress atmospheric overvoltage, operating overvoltage, arc grounding overvoltage and ferromagnetic resonance overvoltage with large amplitude.

The invention discloses a high-capacity over-voltage absorber, and relates to technical field of over-voltage suppression of power systems. The high-capacity over-voltage absorber comprises a non-linear resistor FR1, a non-linear resistor FR2, a high-voltage fuse RD, a capacitor C and a resistor R, wherein one end of the non-linear resistor FR2 is taken as a port, and the other end of the non-linear resistor FR2 is connected with one end of the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1 respectively; the other end of the resistor R, the other end of the capacitor C and the other end of the non-linear resistor FR1 are connected with one end of the high-voltage fuse RD respectively; and the other end of the high-voltage fuse RD is taken as another port. The high-capacity over-voltage absorber has a good voltage limiting effect, a low residual voltage value and very good energy-gathering and energy-absorbing functions.

The invention provides a high-energy-capacity overvoltage absorber which relates to the technical field of electric power system overvoltage inhibition. The high-energy-capacity overvoltage absorber comprises non-linear resistors FR1 and FR2, a high-voltage fuse RD, a capacitor C and a resistor R. One end of the non-linear resistor FR2 serves as a port, and the other end is connected with one endof the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1. The other end of the resistor R, the other end of the capacitor C and the other end of the non-linear resistors FR1 are respectively connected with one end of the high-voltage fuse RD. The other end of the high-voltage fuse RD serves as another port. The high-energy-capacity overvoltage absorber is good in voltage limiting effect, low in residual voltage value and good in energy gathering and energy absorbing.

The invention discloses an overvoltage suppressing device, which comprises a voltage transformer, a high-capacity overvoltage protector, a high-voltage fuse, an intelligent harmonic elimination switch, and a microcomputer comprehensive protection device; one end of the high-capacity overvoltage protector, and a fast fuse One end is connected to a high-voltage isolation switch, the other end of the high-capacity overvoltage protector is grounded, and the other end of the fast fuse is connected to a voltage transformer. Switch, intelligent harmonic elimination switch grounding; high-capacity overvoltage protector includes base, capacitor, compensation capacitor, voltage regulator, photoelectric switch and high-voltage current-limiting fuse; the capacitor is installed on the base, between the capacitor and the inside of the base Set up the detector, connect the compensation capacitor to the capacitor, connect the lightning protection module to the signal transmitter, install a voltage regulator on one side of the base, install a photoelectric switch on one side of the voltage regulator, and install a high-voltage current-limiting fuse on the other side of the base device.

The invention relates to a protective device of direct current power supple for communication equipment and belongs to the technical field of direct current power supply. The protective device comprises a lightning strike protection module, an over / under-voltage protection module, a wave filtering module and a DC-DC power supply module, wherein the lightning strike protection module comprises a primary protection unit, a display unit, a secondary protection unit and a protective tube FU2; the wave filtering module comprises a low-frequency wave filtering unit, a high-low frequency decoupling unit and a high-frequency wave filtering unit. In the invention, a comprehensive protection method based on the cooperation of the three modules, i.e., a reasonable design between two stages of lightning protection in which the first stage of lightning protection is used for aerial drainage and the second stage of lightning protection is used for clamping, is adopted to drain amplified lightning stroke current and to ensure a lower residual voltage value; the over / under-voltage protection of the control of a power supply management module on the power supply module is adopted to prevent the influence from input voltage jumping; meanwhile; the wave filtering mode combining the low-frequency filtered wave and the high-frequency filtered wave is adopted to effectively solve the problems of protection from lightning stoke damage in the direct current power supply for the communication equipment and high-low frequency interference.