197results about How to "Avoid major security incidents" patented technology

This invention relates to a full range self-controllable hydraulic pressure lift-up device package and lift-up method; wherein, the device comprises hydraulic pressure system and autonomous system; said hydraulic pressure system includes hydraulic pressure station and hydraulic pressure hydro-cylinder which sets lift-up bracket on the top; said station is connected with hydro-cylinder through lift-up oil line and drop one separately; said autonomous system comprises industrial controlling computer, displacement scale transducer, speed-sensitive switch valve and output control housing; said method comprises following steps: a)starting up the device; b)setting the lift-up height of object; c) balancing the lift-up height of individual hydraulic pressure hydro-cylinder to lift up the object to the setting position in-phase. The invention is suitable to fix and construct oilcan with individual specification.

The invention discloses an identification method of an insulation defect type of a gas-insulated switchgear, which comprises the following steps that 1, a partial discharge ultrahigh frequency signal of the gas-insulated switchgear is collected; 2, filtering and noise reduction are performed on the partial discharge ultrahigh frequency signal; 3, an envelope of the partial discharge ultrahigh frequency signal is obtained; 4, five characteristic values including a pulse peak Vtop, a trough Vv1 which early appears after the pulse peak, a peak Vp1 which early appears after the pulse peak, a trough Vv2 which appears later after the pulse peak and a peak Vp2 which appears later after the pulse peak are extracted from the envelope; 5, the five characteristic values are formed to construct a characteristic aggregate, and three characteristics with the highest degree of differentiation are taken from the characteristic aggregate to construct a three-dimensional characteristic space; 6, sample data of the partial discharge signal which corresponds to a typical partial discharge type are adopted to train a sample space training classifier; and 7, the trained sample space training classifier is used for classifying and identifying the partial discharge type which is mapped to the three-dimensional characteristic space.

The invention relates to a device for sliding, braking and locking of steel wire rope in a friction drive hoist, which is suitable for the brake of the steel wire rope after the steel wire rope slides during the operation of the friction drive hoist, the brake of container drop caused by lack of brake force, or rope locking in the replacement of the steel wire rope. The device comprises a brake cylinder, a back push plate connected with the brake cylinder, a wedge-shaped brake block for rope locking, a roller chain which can ensure the up and down movement of the wedge-shaped brake block, a spacer pin which can limit and guide the wedge-shaped brake block, a restoring spring for the automatic resetting of the wedge-shaped brake block, a side pulling plate for guiding the brake device and a rope locking stop block for rope locking. When the machine can not be stopped due to rope sliding and lack of the brake force, a control system sends out brake signals, and the brake cylinder is controlled by a hydraulic system, thus leading a lifting steel wire rope which moves downwards of the brake device to be enclasped and braked; when the rope needs to be locked, a cylinder rod of the brake cylinder retracts to brake the steel wire rope, thus achieving the function of rope blocking. The device of the invention has simple structure, convenient operation and wide practicability.

The invention discloses a box body of a railway vehicle traveling gearbox. The box body comprises an upper box body and a lower box body, wherein the upper and lower box bodies are fixedly connected to form the box body; an input shaft bearing pedestal and an axle bearing pedestal are arranged in the box body; the axle bearing pedestal is of a split structure, one half is located on the upper box body and the other half is located on the lower box body; the combination surface between the upper and lower box bodies is inclined; a plurality of reinforcement ribs are distributed on the surfaces of the upper and lower box bodies; the reinforcement ribs extend outwards from the periphery of the axle bearing pedestal; the input shaft bearing pedestal is integrally located on the upper box body; the end of the combination surface between the upper and lower box bodies close to the input shaft bearing pedestal is lower than the end close to the axle bearing pedestal; the included angle between the combination surface and the horizontal direction is ranged in 25-35 degrees; a torsion bar connection boss is arranged at the lower part of the end of the upper box body close to the input shaft bearing pedestal; and a safety support is arranged at the upper part of the end of the upper box body close to the input shaft bearing pedestal. The box body of the railway vehicle traveling gearbox is simple and reasonable in structure, safe, reliable and capable of satisfying the high-speed traveling requirement.

The invention provides a method for producing a detonator explosive ignition head. The method comprises the following processes of: 1, upwards fixedly placing an ignition head explosive cavity on an operating table; 2, adjusting an explosive injection cartridge or the operating table so that the cartridge is positioned right above a cavity shell and aims at an ignition bridge wire; 3, adjusting an explosive injection head or the operating table so that the explosive injection head descends to the explosive cavity; and 4, starting an extrusion device to extrude an ignition agent, and injecting the agent into the explosive cavity so that the agent fully wraps the ignition bridge wire; and finally, extracting the explosive injection head to complete the production. The invention also provides an explosive ignition device for implementing the method, which comprises the operating table, the explosive injection cartridge, the explosive injection head, the extrusion device and an explosion-proof device for isolating a person and the operating table. A fixer on the operating table fixes the ignition head on the operating table, the extrusion device can hermetically connected with the explosive injection cartridge through an air pipe, and the explosive injection cartridge is hermetically connected with the explosive injection head. According to the technical scheme, automatic production of the explosive ignition head can be realized.

The invention relates to a system and method for intelligently and flexibly scheduling data center resources. The system comprises an operation and maintenance monitoring module, a data analysis module, a flexible scheduling module and a strategy maintenance module, wherein the operation and maintenance monitoring module is used for collecting performance and log data and generating a corresponding alarm event according to the category and operation condition of an application program; the data analysis module is used for obtaining the alarm event, judging whether to carry out flexible scaling according to a preset flexible scheduling strategy, and if so, sending a first flexible scaling instruction to the flexible scheduling module; and the flexible scheduling module is used for responding to the first flexible scaling instruction to judge whether a data center resource pool satisfies flexible scaling requirements, if so, sending a second flexible scaling instruction to the data center resource pool and recording a flexible scaling event of the data center resource pool. Compared with the prior art, the system provided by the invention can carry out flexible expansion and contraction according to service demands, thereby improving the stability of a data center.

The invention discloses an adjustable eccentric chuck. The adjustable eccentric chuck comprises a transition disc fixed to a lathe spindle connecting disc. A chuck body is connected to the upper portion of a sliding block seat through screws. A dovetail guide rail on the lower portion of the sliding block seat is matched with a dovetail groove. T-shaped ends of each pair of locking bolts are located in a first T-shaped groove and a second T-shaped groove correspondingly. The connecting ends of the locking bolts are fixedly connected to connecting holes of the sliding block seat correspondingly. An eccentric distance adjusting mechanism comprises a nut seat and a screw rod linearly moving on the nut seat. A gap adjusting mechanism is arranged in the position, where the dovetail guide rail and the dovetail groove are matched, of one side of the dovetail guide rail. Rail grooves which are evenly and annularly distributed are formed in the chuck body, clamping jaws are arranged on the rail grooves, and movement of the clamping jaws is controlled by clamping jaw adjusting holes in the chuck body. A measurement support is fixed to the center of one side of the sliding block seat, measurement studs are arranged on the two sides of the measurement support correspondingly, and a pair of measurement stop blocks is fixed to the transition disc and opposite to the measurement support. According to the adjustable eccentric chuck, time and labor are saved, and high precision and high quality also can be achieved by a common lathe for machining eccentric parts.

The present invention discloses a wire cable rupture protection system which comprises the following components: a safety rod device which is used for lifting synchronously with the suspending beam of a clamper, a locking mechanism which is used for locking and unloosening, a control device used for controlling the locking and unloosing, and a sensing device which is used for providing a wire cable rupture signal to the control device. The lifting safety rod device is always in the locking range of the locking mechanism. The locking mechanism is positioned on a stationary worktable (13). The sensing device monitors the condition of wire cable rupture, and when the wire cable is ruptured, the sensing device transmits the rupture signal to the control device; a reset device (12) operates and the locking mechanism locks the safety rod device so that the heavy object does not fall off and a protection effect is provided. The wire cable rupture protection system of the invention is especially suitable for the problem of wire cable rupture occurred on the travelling crane with small height and has the functions of protecting the wire cable and prolonging the service lifetime of the wire cable. Furthermore the wire cable rupture protection system can be used in various dangerous working conditions and the serious accident is prevented.

The invention relates to a fabrication method of antistatic dedusting filter cloth. The fabrication method comprises the following steps: 1. treating acrylic fiber with a copper salt to form modified acrylic fiber treated by the copper salt; 2. mixing the modified acrylic fiber with polyester staple fiber to form mixed fiber; 3. making a textile assistant; 4. spraying the textile assistant into the mixed fiber before the mixed fiber is opened and enters a hopper; and 5. transferring the mixed fiber with the textile assistant into the hopper to be made into the dedusting filter cloth according to basic production procedures of non-woven fabric. In the fabrication method, firstly the modified acrylic fiber treated by the copper salt is mixed with the polyester staple fiber, then the textile assistant composed of an antioxidant and a stabilizer is sprayed, and finally the dedusting filter cloth is made. The fabrication method has the advantages that the modified acrylic fiber is integrally mixed with the polyester staple fiber, and the textile assistant is sprayed into the mixed fiber, thus avoiding volatilization of the copper salt in the dedusting filter cloth, reaching good antistatic effect of the dedusting filter cloth and ensuring safety production.

The invention discloses an active safety protection system for a power battery pack of an electric automobile. All cells are connected in series to form a cell set, a positive electrode of the cell set is connected with a total positive output end through a positive electrode outgoing wire, a normally-closed relay and a fuse, the normally-closed relay and the fuse are arranged on the positive electrode outgoing wire, and a negative electrode of the cell set is connected with a total negative output end through a negative electrode outgoing wire. The control end of the high-voltage normally-closed relay is connected with a battery management slave control unit, a shunt is arranged on the negative electrode outgoing wire, and the shunt is used for acquiring currents output by the cell set and outputting the currents to the battery management slave control unit. According to the protection system, output of the power battery pack can be intelligently switched off in unforeseen circumstances, the situation that personal safety is endangered due to high voltage is avoided, and especially the problem about safety of the power battery pack when the vehicle suffers from wading, collisions and other accidents can be effectively solved. By means of the system, through multiple safety protection functions, it is fully guaranteed that power batteries can be safe and reliable whether running in vehicle loading or under the offline centralized charging condition, and major safety accidents are completely eradicated.

The invention discloses a universal shaft fault detection method. The universal shaft fault detection method comprises steps that a vibration acceleration signal and/or an impact signal and/or a temperature signal of a universal shaft in the travel process of a train are obtained; characteristic extraction is performed according to the obtained vibration acceleration signal and/or the impact signal and/or the temperature signal to obtain a characteristic value of the corresponding signal; characteristic comparison is performed according to the characteristic value to determine whether the characteristic value exceeds a preset threshold; if the characteristic value exceeds the preset threshold, that the universal shaft has a fault is determined. The invention further discloses a universal shaft fault detection device. The universal shaft fault detection method is advantaged in that monitoring problems of the universal shaft can be effectively solved, and major safety accidents caused byfailure of the universal shaft are avoided.

The invention discloses a cleaning device for a columnar supporting part of an above water drilling platform. The cleaning device comprises two clamping units, wherein each clamping unit comprises a traveling cylinder and a track ring, the track rings are fixed to the lower end surfaces of the traveling cylinders, flanges are arranged on the inner circumferential walls of the track rings in the circumferential directions of the track rings, outer tooth belts are installed on the upper end surfaces of the flanges, semicircular inner rings are further arranged below the traveling cylinders, inner tooth belts are arranged on the upper surfaces of the inner rings, and supporting seats are arranged below the track rings; and rotating motors are arranged on the supporting seats, the output endsof the rotating motors extend upwards after penetrating through gaps between the flanges and the inner rings, rotating gears are installed at the tail ends of the extension sections of the output endsof the rotating motors, the rotating gears are correspondingly matched with the outer tooth belts and the inner tooth belts, and cleaning assemblies are arranged on the lower surfaces of the supporting seats. Aiming at the defects in the prior art, the cleaning device can regularly clean attachments of the supporting part immersed in seawater, the damage probability of the supporting part is reduced, and the service life of the drilling platform is further improved.

The invention discloses an underwater hose safe disengaging device. A male connector and a female connector are reliably connected in a clamping mode and a linear driving unit is adopted to drive a clamping device to achieve a function of automatic disengaging of the underwater male connector and the female connector, and major safety accidents are prevented from happening when emergency disengaging is needed under an abnormal condition. A hydraulic lock is arranged on an oil liquid control loop, and the male connector and the female connector can be effectively ensured to be stably and reliably connected in a clamped mode when a hydraulic system has no power. In addition, a parallel control loop provided with the hydraulic lock is arranged on the oil liquid control loop, and the hydrauliclock on the parallel loop is opened through pressurization of a manual pump under the condition that the system loses power so that separation of the male connector and the female connector is achieved.

An automatic detecting system for an opening amount of a civil air defense door comprises the components of an optical path layout module which is used for acquiring a video image of a door leaf and aframe of the civil air defense door; a data acquisition module which is used for receiving a video image that is acquired by the optical path layout module; an image data server which is used for storing real-time video image information of the door leaf and the frame of the civil air defense door; an intelligent analyzing module which converts the information of the real-time video image of thedoor leaf and the frame of the civil air defense door stored in the image data server, performs analytical calculation, determines an angle opening amount abnormity which are formed by the door leaf and the frame of the civil air defense door in the pixel coordinate, and converts the angle opening amount abnormity to a true opening amount abnormity in a physical coordinate; a display terminal which is used for displaying the determined opening amount abnormity of the civil air defense door; and an electrical master control box which is electrically connected with an optical path layout module,the data acquisition module, the image data server, the intelligent analyzing module and the display terminal. The automatic detecting system realizes checking for the opening amount change conditionof the civil air defense door according to the requirement at any time.

The invention relates to an autonomous charging safety control system and method for a robot. The autonomous charging safety control device comprises a charging management machine, a charging core control panel, a Hall sensor, a wireless AP, a charger, a charging pile and a state indicating signal lamp. According to the autonomous charging safety control system and method for the robot, it is guaranteed that under the non-charging state of the outdoor motion robot, a charging contact is not electrified, and sparks are avoided when the robot and the charging pile are connected in a butting mode; before the robot starts to be charged, short circuit detection is conducted on the charting contact of the robot, and serious safety accidents caused by a short circuit fault are avoided; and when the robot starts to be charged, a charging current output by the charger is detected through the charging core control panel, and whether the robot and the charging pile are accurately connected in thebutting mode or not is judged timely, so that the abnormal situation that the robot fails in being charged is avoided, a closed-loop feedback signal for precise charging positioning is provided for the robot, the motion autonomous property of the robot is strengthened, the cruising ability of the robot with the full battery electricity quantity is improved, and the service life of the battery ofthe robot is prolonged indirectly.

The invention discloses a liquid ammonia safety protection control method. During DCS normal control, when a liquid ammonia safety protection control system is in an automatic state, a liquid ammoniagas alarm gives an alarm when detecting that the liquid ammonia concentration reaches the set alarm high limit values E and F; when the liquid ammonia concentration reaches the set alarm high-high limit values G and H or when the liquid ammonia pressure reaches the set alarm high limit values I and J, an alarm is given; and when the liquid ammonia concentration reaches the set alarm high-high limit values M and N, exhaust fan interlocking, spraying system interlocking, induced air emergency interlocking, liquid ammonia pressure tank interlocking and axial flow fan matched interlocking are started. Any above operation can be manual operation. When the indoor temperature is high, a spraying system can be manually started for manual cooling; when a DCS is abnormal or the whole system is in apower losing state, the liquid ammonia safety protection control system can start a spraying emergency system; and during abnormality, the spraying emergency system can be manually executed in a one-key manner. According to the above control method, liquid ammonia storage, safety protection and emergency control operation are facilitated, and the control method is suitable for liquid ammonia safety

The invention discloses a hydraulic information automation and safety control system and relates to the technical field of automatic information control. The system comprises a server, a total router, a management computer, an industrial switch, an electro-mechanical device LCU unit and a hydraulic information LCU unit. The hydraulic information control system collects the hydraulic related information through multiple approaches. In this way, workers can timely grasp the related information, then analyze problems and control related equipment in the more targeted manner based on the feedback information. The information is stored in a server for the standby purpose at the same time. During the occurrence of a fault or a dangerous case, an alarm sending module timely responds to the fault or the dangerous case, and then feeds the information back to administrators over the telephone, via a short message or in the network manner. Therefore, the timely adjustment and control is conducted, so that the occurrence of heavy security incidents is avoided. The equipment and the modules of the system are mostly connected together via an optical fiber network, so that the system is fast in signal transmission speed, convenient in operation, and high in automation level and informationization level. Meanwhile, the management efficiency is improved.

The invention discloses an automatic control system for water conservancy, which comprises a power supply system, a server, a general router, a management computer, an industrial switch, an electromechanical device LCU unit and a water conservancy information LCU unit. The water conservancy information control system acquires information related to water conservancy in multiple means. A worker can timely master the related information, analyze problems according to feedback information, and carry out targeted control on related equipment, and the information can also be stored to a server for back up. When fault or a dangerous condition happens, an alarm giving module can respond timely, the information is fed back to a management person in a telephone, short message or network mode, adjustment and control are carried out timely, and serious safety accidents can be avoided. Optical fiber network connection is adopted mainly between various devices and modules, the signal transmission speed is quick, the operation is convenient and quick, the automation degree and the informatization degree are high, and the management efficiency is improved.