98results about How to "Fast blocking" patented technology

In the electromagnetic switching device, it is possible to miniaturize and have low costs, have quiet operation noise, and also quickly extinguish the arc. The electromagnetic switching device has an electromagnetic actuator with a movable iron core, a pair of fixed terminals that respectively have a fixed contact point, a movable contact that has movable contact points on the right and left ends, a shaft, and an enclosing component that holds the movable contact points and the fixed contact points. The pair of movable contact points respectively contact with and detach from the pair of fixed contact points, and the pair of fixed contact points respectively conduct each other and are insulated again through the shaft by moving the movable iron core along the axis using the electric magnetic actuator. A quasi-hermetically sealed space, which is the extinguishing space, is formed by the enclosing component and a first yoke. A potting compound is charged, into the space between a body and the quasi hermitically sealed space.

The invention relates to a high-dehydration hardenable plugging sealing agent which comprises the following components by mass percent: 35-50% of solidifying material, 25-35% of composite sealing agent, 5-15% of high-dehydration material, 5-10% of elastic expending material and 10-15% of fiber material, wherein the composite sealing agent is formed by mixing granular husk, mica and cotton seed hull in a mass ratio of 5:2:1; the solidifying material is formed by mixing gypsum, cement, blast furnace slag and sodium phosphate in a mass ratio of 1:1:0.5:0.1; the high-dehydration material is kieselguhr or coal ash; the elastic expending material is formed by mixing coated water-sucking rubber and coated water-sucking resin in a mass ratio of 1:1; and the fiber material is polyacrylonitrile fiber of 9-11mm. The sealing agent integrates with high dehydration, delay expanding, plugging solidification and physical overlap joint; and the formed sealing layer is not easy to destroy in the subsequent drilling process, thereby effectively improving the sealing efficiency.

This method includes: (1) The Garbage short message and color message server supervises the number and its content of the notes sending volume exceeding standard (ES) in a unit time. (2) BOSS obtains the file and content of the ES number; (3) compares the number with the White Name List (WNL) and judges whether the number is within WNL. (4) If it is, the flow is concluded. (5) If it is not, the number and content are presented to the operator interface for manually judgment. (7) If it is not, the flow is concluded. (8) If it is, a halting note function instruction is sent to HLR against this number. At the same time, the related data are stored into the User Service Database for staff explanation when complaint rises.

The invention provides a permanent magnet linear motor type electromagnetic catapult for an unmanned aerial vehicle. The permanent magnet linear motor type electromagnetic catapult comprises a catapulting rack, an unmanned aerial vehicle supporting and catapulting platform, a power supply system, a brake system and a control system. The permanent magnet linear motor type electromagnetic catapult is characterized in that the catapulting rack can be carried on transport equipment and is provided with linear slide rails, the unmanned aerial vehicle supporting and catapulting platform is supported on the linear slide rails of the catapulting rack through the two sides of the unmanned aerial vehicle supporting and catapulting platform, the catapulting rack is provided with the brake system, the unmanned aerial vehicle is carried on the unmanned aerial vehicle supporting and catapulting platform which can be driven by a catapulting motor to accelerate along the linear slide rails, the catapulting motor is a permanent magnetic linear motor, and when the unmanned aerial vehicle reaches the speed needed for taking-off, the unmanned aerial vehicle supporting and catapulting platform is braked under the damping effect of the brake system, and the unmanned aerial vehicle flies out inertially. The permanent magnet linear motor type electromagnetic catapult overcomes the problems that in the prior art, an unmanned aerial vehicle is poor in maneuverability, low in reliability, poor in concealment and low in efficiency during catapulting.

The utility model discloses a linkage processing method of the safety information in the network which comprises a plurality of linkage units and linkage processing devices, and is characterized in that the safety information is obtained from the linkage units and comprises an alarm parameter; an attack source device is positioned according to the alarm parameter and a linkage strategy corresponding to the alarm parameter is searched; the linkage strategy controls safely the attack source device by the corresponding linkage units. The utility model can be flexibly combined with the journaling system, the network management system, the authenticating system. The network equipment, can rapidly locate the attacker by the authenticating system and then send the safe strategy disposition to the network equipment, and can rapidly stop and control the oriented source.

The invention relates to a rapid plugging device of a dewatering well with a deep foundation, which comprises a plugging sleeve, a plugging cover base, a plugging cover, an external water stopping ring, an inner water stopping ring and a water stopping plate, wherein the plugging cover base is a ring base connected and vertically fixed with the lower part of the inner wall of the plugging sleeve, more than three bolts are welded on the circumference in equal parts of plugging cover base, the plugging cover is provided with bolt holes relative to the bolts of the plugging cover base, the inner and external water stopping rings are vertically fixed and connected to the inner and outer walls of the plugging sleeve, the water stopping plate and the inner water stopping ring are connected through welding or flange. The device has simple structure, low process cost, convenient use and wide adaptability, and uses unified construction method to replace each plugging process, has rapid plugging, low cost, no construction risk and dangers, avoids the limitless underground water pumping, and protects the environment.

The invention provides a construction structure for plugging water and sand gushing from a foundation pit base. The construction structure comprises a steel sleeve, a concrete cover plate, a groutingreinforcing layer placed below the concrete cover, a concrete bottom plate and a concrete backfill layer of the bottom plate; the concrete construction method specifically comprises the following steps that the steel sleeve is installed with a water and sand gushing point as the circle center, and the bottom of the steel sleeve extends to the position 1m below the foundation pit base; waterstop ring plates are installed on the middle part and the upper part of the steel sleeve; high-grade early-strength concrete is poured into the steel sleeve to form the concrete cover plate, and after the final setting of the concrete, and grouting reinforcement of a disturbed soil layer is carried out within the range of the depth range of 1.0 m below the bottom of the cover plate within the scope of the cover plate of the concrete cover plate in the periphery of the steel sleeve; then a drain valve in the side wall of the steel sleeve is opened, and a sleeve opening of the steel sleeve is plugged through a sealing flange steel cover plate; and finally, the drain valve in the side wall of the steel sleeve is closed, and grouting into the steel sleeve is carried out for plugging the water gushingthrough a grouting pipe reserved in the steel cover plate. According to the construction structure and method for plugging the water and sand gushing from the foundation pit base, the plugging speedis high, the effect is good, the cost is low, and the control effect of a water gushing range is remarkable.

A device to control an electron beam for the generation of x-ray radiation, has an electron emitter to generate an electron beam, to which emitter an emitter voltage can be applied, a diaphragm, at least two control elements associated with the diaphragm to affect the electron beam, and switching arrangement with which at least two different electrical voltages can be applied to the at least two control elements. The same electrical voltage is applied to each of the at least two control elements. Upon switching the voltage, an electrical circuit that delays the setting of the respective voltage at the one control element is associated with the connection line of the one control element with the switching arrangement to switch over the voltage. The invention moreover concerns an operating method for the device and an x-ray tube provided with the device.

The invention relates to an impervious blocking agent, and belongs to the technical field of oilfield drilling. The impervious blocking agent comprises the following components in percentage by weight: 40-80% of superfine calcium carbonate, 20-60% of fiber material, 0-10% of vegetable glue and 0-10% of diluter. With the adoption of the impervious blocking agent, the filter loss of drilling fluid can be reduced, the pore space of an oil layer is blocked, an oil gas layer is protected, and the sealing quality of a micro-crack oil layer and high-permeability oil layer well cementation is improved.

The invention discloses an MMC topology with DC short circuit fault current blocking ability, which relates to the technical field of modular multi-level converter. The topology consists of a new upper arm module, a reactance and absorption branch of the bridge arm, and a new lower arm module. The new modules of the upper and lower bridge arms in each phase are composed of n new submodules connected in series. Each new submodule outputs 0 or Uc voltages. The switches of the new submodules are all full-control devices IGBT, and the switches of the bridge arm reactance and absorption branch arebidirectional thyristors. In the event of a DC short circuit fault, the back-voltage control strategy is adopted to control the turn-on and turn-off of the third switch transistor in each new type sub-module, fast and effective blocking of AC system feed current is realized. At the same time, the bridge arm reactance and the absorption circuit absorbs the residual energy of the bridge arm reactorand the DC side current limiting reactor, and remarkably reduces the voltage stress of the DC side current limiting reactor and the bridge arm reactor, thus avoiding the overvoltage damage of the bridge arm reactor and the DC side current limiting reactor, and ensuring the safe operation of the device of the converter station.

The object of the present invention is to provide a sealer gun in which even an operator having no expert skill can easily conduct application by optionally setting the bead width, and keep the application uniform from the initial stage to the final stage. In the sealer gun, the needle valve is moved backward by predetermined strokes by operating the trigger, and a sealer is spouted from the gap between the valve seat and the needle valve. In this instance, with the adjusting knob of the notch portion provided in the base portion of the gun body, the position-adjusting member is moved back and forth, and the moving-backward stroke of the needle valve is controlled. The tapered portion 8b is formed at the tip of the needle valve, and the orifice member is provided in the sealer passage in the downstream of the valve seat so as to absorb the pulsating pressure variation of the sealer.

A holding device for medical instruments, with a bracket on which at least one medical instrument can be affixed and with at least one joint to position the bracket and / or the medical instrument, so that the at least one joint is configured as a ball and socket joint that is provided with at least one bearing shell and a pivot ball and that can be converted between a position that releases the joint and one that blocks the joint. To provide a holding device for medical instruments that is simple to operate, makes possible a rapid blocking and releasing of the at least one joint, and in addition ensures that unintentional release of the blocking is excluded to the greatest extent possible, it is proposed with the invention that the bearing shell should be of rigid configuration and the pivot ball should be capable of being affixed in the bearing shell by clamping by at least one blocking element.

A device for altering the airflow pattern from a ceiling vent diffuser by obstructing openings in a region of the diffuser. The device comprises a flexible member that is secured to a diffuser vane by a hook member and two tabs. The hook member has two or more engagement regions which enable it to engage vanes on different manufacturer's diffusers. The first end of the hook member is either pivotally secured to the flexible member or is engaged in an adjustment mechanism thereon. The adjustment mechanism allows the second end of the hook to be situated in different positions relative to an interior edge of the flexible member so as to accommodate different diffusers. An extension detachably engages the flexible member to increase the size thereof to accommodate larger diffusers.

The invention relates to a DC power distribution network multi-function fault current controller and a control method. The multi-function fault current controller is formed by a series convertor loop(1) and a parallel convertor loop (2). The series convertor loop (1) is formed by an NPC full-bridge circuit, an LCL filter, a DC capacitor and a DC bleeder resistor. The parallel convertor loop (2) is formed by an NPC three-level DAB circuit. Under a stable state, the fault current controller can compensate circuit voltage surge, sag and pulsation; and under a fault state, the fault current controller can provide current-limiting inductance and backward voltage, thereby comprehensively realizing multiple functions of voltage regulation of a DC power distribution network and current limiting and blocking of the fault current, and improving use efficiency of the fault current controller.

A device for altering the airflow pattern from a ceiling vent diffuser. The device comprises a flexible member that is secured to a diffuser vane by a spring-biased hook and one or more tabs. A release button on the outer surface of the device is depressed to pivot the hook out of engagement with the vane. The device is complementary shaped to a region of the diffuser. When installed, the device blocks the openings in that region and substantially prevents air from flowing out of the openings. One or more devices may be installed in selected regions to block airflow from those selected regions. A plurality of devices may be utilized to completely prevent airflow from the diffuser.

The invention relates to a rapid plugging agent. The rapid plugging agent is mainly composed of hemihydrate gypsum, magnetized six barium ferrite, cement, a promoter, a plasticizer, a curing agent, etc. The rapid plugging agent has characteristics of rapid plugging speed, high activity, good plugging property and chemical stability, good rheological performance and uniform compressive strength ratio.

The invention provides a ceramic microsphere, a diaphragm containing the ceramic microsphere and a lithium ion battery containing the diaphragm. Different from a conventional diaphragm of a lithium ion battery, the diaphragm disclosed by the invention is mainly characterized in that two high-safety coated microspheres, namely conductive microspheres and ceramic microspheres, of thermosensitive blocking lithium ions and thermosensitive conduction electrons are prepared by adopting a polymer coating method, and the two high-safety coated microspheres are applied to the diaphragm of the lithium ion battery. The diaphragm of the lithium ion battery has two functions, namely a thermosensitive lithium ion blocking function and a thermosensitive conduction function, and the safety performance ofthe lithium ion battery can be effectively improved.

The invention relates to a fault current controller of a DC power distribution network. The fault current controller comprises a filtering loop, a series converter loop and a parallel converter loop,wherein the filtering loop comprises an LCL filter, the series converter loop comprises a full-bridge circuit, and the parallel converter loop comprises a DC / DC circuit. Under a steady-state condition, the fault current controller can be used for compensating temporary rising and temporary reduction of a voltage of a circuit and pulse; and under a fault condition, the fault current controller canbe used for providing current-limiting inductance and a reverse voltage, voltage adjustment of the DC power distribution network is comprehensively achieved, various functions of fault current limiting and blocking is achieved, and the application efficiency of the fault current controller is improved.

The invention discloses a method for closing the bottom of a steel boxed cofferdam and gaps among river beds. The method comprises the following steps: a, the steel boxed cofferdam is assembled on a shore side; b, retaining beams are mounted in areas needing to be closed and keep a certain distance from the outer wall of the cofferdam, and connecting plates are mounted between the retaining walls and the outer wall of the cofferdam; c, a plurality of movable inserting plates are mounted between the retaining beams and the outer wall of the cofferdam and hung on the outer wall of the cofferdam by using steel wire ropes, and adjacent movably inserting plates are clung to each other; d, the cofferdam is moved to designed positions of the river beds; and e, the steel wire ropes for hanging the movable inserting plates are untied, the movable inserting plates are lowered, and then the bottom of the cofferdam and the gaps among the river beds are closed. The method has the advantages that the plugging effect is good, the ability of adapting to water flow is strong, the plugging speed is high, the operation is convenient and the safety is high, and has not need to be operated by a diver through diving into the water bottom.

The invention discloses an inflatable and extensible water retaining device for underground first-aid repair. The inflatable and extensible water retaining device comprises a water retaining plate A,a water retaining plate B, a housing water retaining plate, a pneumatic extensible cavity, a water retaining bag and a well opening support, wherein plate A movable sliding rails are arranged at the upper portion and the lower portion of the water retaining plate A, rubber pads are arranged on the outer sides of the plate A movable sliding rails, symmetrical-side lock catches are arranged in the rubber pads, the upper and lower plate A movable sliding rails of the water retaining plate A respectively act in slideways in the plate B, plate B movable sliding rails are arranged at the upper portion and the lower portion of the water retaining plate B, and the plate B movable sliding rails arranged at the upper portion and the lower portion of the water retaining plate B respectively act in slideways in the housing. The problem can be effectively solved that water flow in a pipeline cannot be effectively discharged out and is blocked during damaged pipeline maintaining operation, the device can be repeatedly utilized, the device is put into a well when water flow in the well needs to be blocked, inflation is performed through an air delivery pipe to make the device stretch, passing water can be quickly blocked, then water draining is performed by using a water pump, and the risk existing in a limited operation space if workers go down to the well can be effectively prevented.

The invention discloses a fast HTTP redirection method. The method comprises the following steps: step one, a terminal sends a first message of TCP three-way handshake to a server; step two, the server responds a second message of the TCP three-way handshake to the terminal, and a switch mirrors the message to an admission control server; step three, the admission control server sends a HTTP redirection message to the terminal when receiving the message mirrored in the step two; step four, the terminal receives the second message of the TCP three-way handshake responded by the server, and sends a third message of the TCP three-way handshake to the server; step five, the terminal receives the HTTP redirection message sent by the step three, and stores the same in the TCP cache; step six: the terminal sends a HTTP request to the server and waits the HTTP response; step seven, the terminal takes out the HTTP redirection message received in the step five, and then executes the HTTP redirection. By use of the fast HTTP redirection method disclosed by the invention, the defect that the existing HTTP redirection method is invalid under a specific condition is effectively solved, and the fast blocking is realized.

The invention relates to a water channel structure and a gas water heater water supply system with the water channel structure. The water channel structure comprises a pipeline body, a check valve assembly and a drive assembly, wherein the inner portion of the pipeline body is divided into a hot water pipeline, a cold water pipeline and an intermediate pipeline communicating with the hot water pipeline and the cold water pipeline, the hot water pipeline is provided with a hot water inlet and a hot water outlet which communicate with fluid, the cold water pipeline is provided with a cold waterinlet and a cold water outlet which communicate with the fluid, the check valve assembly comprises a plug which is movably arranged in the intermediate pipeline and can only allow water in the hot water channel to flow into the cold water pipeline in one direction, the drive assembly is arranged in the cold water pipeline and connected with the plug, in the state that the cold water outlet is opened, the drive assembly drives the plug to block the hot water pipeline and the cold water pipeline, so that it is avoided that the water heater is started by accident.