31results about How to "Does not affect the protection function" patented technology

The present invention is anti-locking control method and system for magnetic suspension train, and on the basis of traditional magnetic suspension control device, one anti-locking control device comprising one predicting controller, one logic processing unit, one power tube state detector, etc is set. The predicting controller predicts the dynamic suspension gap on the running magnetic suspension train based on the signal from the displacement sensor of the suspension control device and sends command to the suspension control device according to the prediction result. Normally, the magnet current is real-time regulated for the magnet to keep certain suspension interval to the track; and in case predicted locking risk, the anti-locking control device requires the suspension control device to feed inverse current to the magnet so as to avoid locking the train onto the track.

The invention provides a method for automatically resetting the grounding protection device of a small-current system, which has the function of automatically resetting. The method comprises the following steps: an intelligent controller of a microcomputer judges whether the small-current system is grounded and further judges the grounding phase if the system is grounded; when the system is subjected to a grounding fault, a switching-on instruction is given to a fault-phase circuit breaker, and the fault-phase circuit breaker is rapidly switched on; the fault phase is connected with a grounding grid via a low-impedance current-limiting reactor provided with a secondary coil; then, a system grounding current flowing through the primary coil of the low-impedance current-limiting reactor is detected by a zero-sequence current transformer, and a high-frequency voltage signal generator connected with the secondary coil of the low-impedance current-limiting reactor is put into operation, so a high-frequency voltage and a high-frequency current are injected into the fault phase of the system; the high-frequency impedance of the fault phase of the system can be calculated by the intelligent controller of the microcomputer, so as to obtain the grounding resistance of the faulted return circuit; and the grounding resistance thereof is further compared with that in the normal system to judge whether the grounding fault disappears, if so, an automatic resetting instruction is given, so as to switch off the fault-phase circuit breaker, thereby automatically resetting the device.

The invention relates to an automatic opening and closing device for a small circuit breaker, which includes a base, a cover, a transmission mechanism, a control circuit board installed on the base, and an action connecting rod. The transmission mechanism includes a transmission motor and a reduction gear set. The driving bevel gear arranged at the end of the reduction gear set of the transmission motor, the driven bevel gear meshed with the driving bevel gear, the opening and closing gear which is arranged on the upper part of the driven bevel gear and driven by the driven bevel gear, and the middle part of the opening and closing gear is set There is a transmission link, which passes through the installation base and is connected to the operating handle of the miniature circuit breaker to be controlled. An action lever is vertically arranged at the end of the action link, and the action lever reaches directly to the side of the assembled miniature circuit breaker. In the arc-shaped groove, the small circuit breaker cannot be closed manually when it is in the opening position. The invention has the advantages of simple structure and reliable operation, and is an ideal accessory for long-distance automatic opening and closing of the small circuit breaker.

Provided is a method for extracting an explosion-continuous short circuit signal. The method is characterized by utilizing the features of an instantaneous positive and negative pulse current which is produced at an explosion point during short circuiting, and thus extraction of the explosion point signal is realized; and combining a leakage protector to control short-circuit burning. Therefore, the short-circuit burning, which is caused for the reason that a short-circuit current is not large enough to enable an air short-circuit switch to trip, is performed an automatic circuit-breaking control, and electric fire cases can be reduced; the original leakage protector is combined, so that circuit control is simple and the cost is low; and thus the method is an ingeniously-designed, highly-practical anti-electric fire technical scheme.

The invention provides a protective cover and an isolation switch equipped with the same, and belongs to the technical field of parts of an electric switch apparatus. The protective cover comprises a cover body, a threading port and a first operating port, wherein the cover body is suitable for being mounted on the base of the isolation switch and used for covering at least one contact base which is mounted on the base and used for connecting an inlet wire or an outlet wire; the threading port is formed in the cover body or between the cover body and the base, and used for allowing the inlet wire or the outlet wire to pass through; and the first operating port is formed in the cover body and used for allowing an operating tool to pass through to connect the inlet wire or the outlet wire on the contact base or remove the connection between the inlet wire and the contact base or between the outlet wire and the contact base. The protective cover provided by the invention is mounted on the base of the isolation switch, so that the contact base connected with the inlet wire or the outlet wire can be covered; and the first operating port is formed in the protective cover, the inlet wire or the outlet wire on the contact base can be connected and contacted without detaching the protective cover, so that wire connecting and wire detaching steps of the isolation switch can be simplified.

A welding sealing method for preventing crevice corrosion from being generated between an iron anode and a copper alloy flange comprises the annular iron anode and the copper alloy flange, the peripheral surface of the annular iron anode is embedded into a center hole of the copper alloy flange in a matched mode, and the two ends of the annular iron anode and the two ends of the copper alloy flange are flush with each other. The welding sealing method is characterized in that the contact interfaces of the two ends of the annular iron anode and the copper alloy flange are subjected to welding sealing. The welding sealing method has the advantages that the contact faces between the iron anode and the cooper alloy flange are sealed and protected in a welding mode, the phenomenon of water seepage through the contact faces is avoided, the problem of crevice corrosion is solved thoroughly, it is ensured that the iron anode can reach the required and designed service life, and the dissolving property of the iron anode in seawater and the protection function and effect of the iron anode to a seawater pipeline are not affected in the protection validity period.

The invention discloses a side position operation gear for a beaker, which includes a casing, as well as a rotary body, a beaker rotary control shaft, and a rotary body driving mechanism, wherein the rotary body is arranged on the casing in a rotating manner; the rotary body driving mechanism is linked with the rotary body in a rotating and driving manner; the rotary body is in transmission fit with the breaker rotary control shaft through a clutch in a separation and union manner; the outer end of the breaker rotary control shaft penetrates through the casing from the side part of the casing. The side position operation gear has the advantages that under the premise that the normal tripping operation of the breaker is not influenced, the side position control of the breaker is realized, under the signal control of a prepayment carrier wave electric energy meter, the full automatic control of no-fee tripping and renewing switching is realized.

The invention discloses a local agent method of a WEB firewall. First connection is established between a client side and an agent engine of the WEB firewall, second connection is established between the agent engine of the WEB firewall and a server, and the agent engine of the WEB firewall sends quadruple information connected for two times to a protocol stack of the WEB firewall; the protocol stack of the WEB firewall records a request data package which receives the first connection, the agent engine performs rule detection, and, when the request data package is a non-attack package, connection is established between the web engine and a server side, and data package sending is performed; and, after the protocol stack of the WEB firewall determines that the data package transmitted back by the server side is a response data package of the second connection, and the response data package is directly sent to the client side after the response data package is modification check. The local agent method can effectively improve great concurrent access lower agent engine performance, and effectively reduce a load of the gent engine.

The invention discloses a protective net device for a vehicle, which comprises two lower fixing seats, a rotating seat is arranged at the center of the upper surface of the lower fixing seats, and a rotating rod is connected to the inner part of the rotating seat, and the rotating rod The inner surface of the rotating rod is fixedly connected with a baffle plate, the upper surface of the rotating rod is fixedly installed with an arc frame, and the inner center of the arc frame is fixedly connected with a reinforcing beam, and both sides of the reinforcing beam are fixedly installed with glass A cylindrical frame is fixedly connected to the inner center of the reinforcing beam, and a rotating cavity is arranged inside the cylindrical frame, and card seats are fixedly connected to both sides of the upper surface of the arc-shaped frame, and the inside of the card seat A T-shaped chute is provided, and the inside of the T-shaped chute is slidably connected with an upper fixing seat through a T-shaped slider. The automobile electronic anti-robbery net device is not only convenient for installation and use through the connection structure of the upper fixing seat and the lower fixing seat, but also can greatly improve the safety of people in the car.

The invention discloses a nose mask, and relates to the field of hygienic products. The nose mask comprises a main body part, a filter assembly and a fixing assembly; the main body part is provided with first air-inlet-outlet openings which are matched with the nose, and further provided with a second air-inlet-outlet opening which is in communication with the first air-inlet-outlet openings; thefilter assembly is installed on the second air-inlet-outlet opening; and the fixing assembly is connected with the main body part and used for fixing the main body part to the face. The nose mask provided by the embodiment only covers the nose part, is comfortable to wear and has good air permeability; the material consumption is greatly reduced, the production cost is reduced, and the requirements of emergent large hygienic events on protective products can be met more easily; meanwhile, the pollution to the environment and the subsequent recycling and destroying cost are also reduced; in addition, due to the fact that the face is less shielded, the face recognition can normally play a role, the efficient management and control over crowded areas such as airports and stations are facilitated after an emergency hygiene event occurs, and social security stability is also facilitated to be kept.

The invention discloses a wind turbine generator multimode adaptive control method and device, and a computer storage medium. The wind turbine generator multimode adaptive control method comprises thesteps: S1, a digital prototype model of a wind turbine generator is built; S2, operating state data of the controlled wind turbine generator are collected in real time; S3, the collected operating state data are input into the digital prototype model to be compared, whether the controlled wind turbine generator is in a normal operating state or not is judged, and if not, the step S4 is shifted tobe executed; and S4, the control mode is determined according to a comparing result to control the controlled wind turbine generator to be adjusted to be in the normal operating state. The wind turbine generator multimode adaptive control device comprises a prototype model building module, a data collecting module, a state judgment module and a multimode adaptive control module. Multimode adaptive control over the wind turbine generator can be achieved, operating reliable stability of the wind turbine generator is improved, and the advantages of simple realizing method, low cost, high controlefficiency and precision and the like are achieved.

The invention relates to a curtain wall unit and a curtain wall. The curtain wall unit comprises a unit body, a connecting device and an unmanned aerial vehicle detection countering device. The unit body comprises a panel and a mounting component which are connected with each other; the panel and the mounting component form an accommodating space; the panel is made from a material which can be penetrated by electromagnetic wave; the connecting device is fixedly connected with the mounting component; and the unmanned aerial vehicle detection countering device is arranged inside the accommodating space and is connected with the mounting component. The curtain wall unit and the curtain wall provided by the invention have the functions of a curtain wall and also have the functions of detectingand countering an unmanned aerial vehicle, so the functions of the curtain wall unit and the curtain wall are no longer simplex.

The invention relates to the technical field of guardrails, in particular to a damping type safety guardrail easy and convenient to disassemble and assemble, which comprises a base and a guardrail body mounted on the base, the guardrail body comprises a guardrail right column, a frame and a guardrail left column, and the guardrail left column and the guardrail right column are mounted on the left side and the right side of the frame respectively. The guardrail is divided into the guardrail left column, the guardrail right column, the connecting block and the base which are detachably mounted, mounting and dismounting are easy and convenient, the guardrail damaged in the using process is also extremely convenient to replace, meanwhile, the protection function of the guardrail is not affected, and the stability of the guardrail can also be improved; meanwhile, second sliding grooves are formed in the sides, close to the frame, of the right guardrail column and the left guardrail column correspondingly, the left side and the right side of the frame are slidably installed in the two second sliding grooves correspondingly, the frame is connected with the second sliding grooves through buffer springs, and when the frame is stressed, the buffer springs deform and absorb collision force, so that damage caused by the frame to people and objects is reduced; and people and objects are protected.

The invention discloses a multi-mode control protection method and device for a transmission chain of a wind turbine generator. The method comprises the steps: S1, obtaining operation data of a target wind turbine generator, and recognizing the designated frequencies of the transmission chain according to the operation data, and taking the designated frequencies as key monitoring frequencies; and S2, controlling the target wind turbine generator to operate according to a plurality of preset control modes, monitoring the state of the transmission chain in the operation process of the target wind turbine generator, judging whether a specified operation index exceeds a normal range at the key monitoring frequency or not, and if yes, carrying out control to switch in the multiple preset control modes so as to adjust the corresponding operation index. The device comprises a frequency identification module and a multi-mode control module. The multi-mode control protection method and device have the advantages of being simple in implementation method, low in cost, capable of achieving multi-mode automatic control protection of the transmission chain of the wind turbine generator, high in protection control precision, good in protection performance, high in response speed and the like.

The invention discloses a ceramic protective sleeve. The ceramic protective sleeve comprises a ceramic sleeve cylinder and two plugs. The plugs are of round table structures made of rubber, a boring hole is formed in the inner end face of each plug, and ceramic cylinder bodies are embedded in the boring holes; the end faces, located at entrances of the boring holes, of the ceramic cylinder bodies are flush with the inner end faces of the plugs; stripe-like protrusions are arranged on the outer wall of the plugs, slope openings are formed in the two ends of the inner wall of the ceramic sleeve cylinder and are matched with the plugs, and the slope openings and the ceramic sleeve cylinder are of integral structures. According to the ceramic protective sleeve, a sticking mode is not required to be used, an ignition electrode is plugged into the ceramic protective sleeve, the two ends are plugged with the plugs, so that the ignition electrode is blocked and fixed by the inner end surfaces of the plugs, the periphery of the ignition electrode makes contact with an insulated and high-temperature resistant ceramic, so that rapid and reliable installation is realized, and protective function of the ceramic protective sleeve is not affected.

The invention provides a method for interplanting glycyrrhiza under afforestation in a protection forest. The method comprises the following steps: 1) digging planting holes: selecting the protectionforest with the canopy density which is not greater than 0.5 and digging the planting holes under the afforestation in the protection forest; 2) selecting seedlings: selecting glycyrrhiza germchits which have no diseases and insect pests, the seedling root length of 20cm to 35cm and the ground diameter of the seedlings of 0.4cm to 0.8cm; 3) planting: putting the glycyrrhiza germchits into the planting holes and backfilling and compacting by utilizing sandy soil. According to the method provided by the invention, the glycyrrhiza is interplanted under the afforestation in the protection forest and the coverage rate of vegetation under the afforestation is improved; the ecological protection function of the protection forest is enhanced.

The invention discloses an integrated control system of a piston variable pump, which is combined with the piston variable pump. The piston variable pump comprises an oblique plate, wherein the oblique plate is installed in the piston variable pump, and the displacement of the piston variable pump is determined according to the oblique angle of the oblique plate. The integrated control system of the piston variable pump comprises a big connecting rod, a small connecting rod, a lower variable cylinder, an upper variable cylinder, an integrated control assembly and a control oil way, wherein thebig connecting rod and the small connecting rod are respectively connected to both ends of the oblique plate, the big connecting rod is used as a piston of the lower variable cylinder and is connected with the lower variable cylinder, and the small connecting rod is used as a piston of the upper variable cylinder and is connected with the upper variable cylinder; high-pressure oil of an oil outlet or control oil of an external control port of the piston pump are usually introduced to the upper variable cylinder; the integrated control assembly is connected with the oil outlet of the piston pump by virtue of an oil way, and the integrated control assembly is connected with the small connecting rod; and the lower variable cylinder is connected with the integrated control assembly by virtueof the control oil way.

The invention relates to an intelligent body protection device and a protection method thereof. Due to the adoption of the intelligent body protection device and the method thereof, the reliability and the rapidness of the tripping operation are improved. The intelligent body protection device comprises a CPU (central processing unit) and a relay. One path of non-electricity protection signal outputs a tripping signal TZ by utilizing the relay; the other path of non-electricity protection signal is sent to the CPU and the CPU sends a signal record XH; the CPU is also additionally provided with two paths of inputs; one path of input is a DGA (Dissolved Gas Analysis) control word determined by a user; the other path of input is DGA information; the DGA information comprises early warning information sent out by a DGA unit and information of various component gases dissolved in transformer oil; the DGA information is sent out by a GOOSE (Generic Object Oriented Substation Event)/MMS (Multimedia Messaging Service) form; after the DGA information is judged by the CPU, a tripping signal TZ1 and a signal record XH1 are output; and the tripping signals TZ and TZ1 are connected in parallel to a tripping circuit and are both used for realizing tripping of a transformer. In the scheme, DGA (Dissolved Gas Analysis) on-line monitoring information is introduced to improve the reliability and the rapidness of protection of a transformer body and the intelligent body protection device and the protection method thereof are convenient to analyze the condition of the body protection operation later.