43results about How to "To achieve the purpose of safe operation" patented technology

The invention discloses a metering terminal box capable of effectively solving problems of wire off and wire breaking in wiring and ensuring safe operation of an electric power circuit. The metering terminal box comprises a box body, a box cover, conducting strips and a locking mechanism. The interior of the box body is partitioned into a plurality of wiring cavities through longitudinal partition plates, a boss is arranged in the middle of each wiring cavity, a left side face and a right side face of the front portion and a left side face and a right side face of the rear portion of each wiring cavity are respectively and correspondingly provided with a hinged seat, and wiring holes respectively corresponding to the wiring cavities are formed in the front side wall and the rear side wall of the box body; a sleeve hole adaptive to the boss is formed in the middle of each conducting strip, and the conducting strips are correspondingly arranged at bottoms of the wiring cavities one by one; the locking mechanism comprises gate valves, springs and baffles, each gate valve comprises a pressing handle, a valve block and a hinged shaft, and the gate valves are mounted on the front portion and the rear portion of each wiring cavity of the box body; the springs are arranged the pressing handle of each gate valve and the boss in an embedded mode; and pressing handle holes respectively corresponding to the pressing handles of the gate valves are formed in the front portion and the rear portion of each baffle, and middles of the baffles are mounted on the bosses through screws.

The invention belongs to the field of safety of coal mine downhole gas extraction and drilling construction, and particularly relates to a gas-slag separation and recovering system for drilling construction, which comprises a drill and a water-spraying dust prevention system, wherein a drill stem kit of the drill is provided with a three-way hole packer; the three-way hole packer is connected with a connection pipe; the connection pipe is connected with a transmission pipeline through a three-way pipe; the connection pipe is provided with a throttling valve which is used for controlling the flow of drill cuttings to prevent the transmission pipeline from being blocked by the excessive drill cuttings; one end of the transmission pipeline is connected with a blower, and the other end of the transmission pipeline is connected with a closed space; the other end of the closed space is connected with a negative-pressure drainage pipe connected to a ground gas extraction system; and the closed space is provided with the water-spraying dust prevention system and a slag removal door which are used for separating the drill cuttings. The recovering system provided by the invention can safely and efficiently separate the drill cuttings and gas in the drilling process of the drill in coal mine downhole gas extraction and drilling construction.

The invention provides a super capacitor energy storage lazy arm for wave compensation busbar side energy management, and belongs to the technical field of ocean operation. The super capacitor energystorage lazy arm for wave compensation busbar side energy management comprises a workbench. The workbench is provided with a supporting arm and a grabbing disc. A support column is fixed to the workbench. A fixing frame is fixed to the workbench. A steel wire rope is fixed between the fixing frame and the support column. The support column is rotationally provided with a first rotation arm and a second rotation arm which are fixed to one end of the supporting arm. A first overturning arm, a second overturning arm, a third overturning arm and a fourth overturning arm are hinged to the grabbingdisc in the circumferential direction at equal intervals. The supporting arm is provided with a super capacitor energy storage device. The super capacitor energy storage lazy arm can more effectivelyconduct wave compensation on lazy arm adjustment, and accordingly, offshore operation stability and safety are guaranteed.

The invention discloses a visual deceleration control system and method for a reciprocating cableway passenger car. It solves the problems that the running deceleration control system of the current cableway bus is easily damaged, difficult to maintain, high operating cost, and the entire control process does not have visibility. etc. advantages, its structure is: it includes cable and the passenger car that is connected with cable, is provided with at least one color camera device that cooperates with passenger car on the cableway station, and this color camera device is connected with computer by image acquisition card, and computer uses software The processed image information is connected to the deceleration actuator through the I / O of the data acquisition card, and the computer uses software to set a pair of detection lines on the template image, which correspond to the position of the deceleration point of the bus on the cable.

The invention discloses a piece of cable supporting pincers for secondary cable operation. The cable supporting pincers comprise a cable supporting pincer body, a hinge joint head, a pair of handles and a cable supporting buckle, wherein the cable supporting pincer body comprises a pair of pincer shoulders hinged to the hinge joint head and a pair of pincer arms corresponding to the pincer shoulders in a one-to-one mode, the bottom ends of the two pincer shoulders are fixedly connected with the corresponding handles respectively, the top ends of the two pincer shoulders are respectively provided with a groove, the two top ends of the two pincer arms are bent and extend to form two arc-shaped grooves, two convex edges matched with the corresponding grooves of the two pincer arms protrude out of the bottom ends of the two pincer arms which are hinged to the corresponding pincer shoulders through the convex edges and the grooves, one end of the cable supporting buckle is hinged to one pincer shoulder, and the other end of the cable supporting buckle is buckled onto the other pincer shoulder. The cable supporting pincers are wide in application range, easy to operate, safe, reliable and convenient to carry, and the cable supporting angle and the cable supporting range of the cable supporting pincers can be adjusted according to needs.

The invention discloses a method for estimating the tracking state of a wide area measurement system (WAMS), which relates to the technical field of electric power system operation, and aims to solve the technical problems in the measurement of the WAMS. The method comprises the following flows: 1) establishing a related data area; 2) acquiring node branch model information for each node; 3) acquiring branch WAMS change information; 4) partitioning network subareas; 5) establishing a decision tree for each subarea; 6) selecting nodes and the attributes of the decision trees; 7) acquiring a plurality of sample data to train the decision trees so as to obtain the attribute values of the decision trees; 8) using part of samples to train and verify the obtained decision trees to acquire the optimal decision tree; 9) saving the decision tree of each subarea into the data area; and 10) repeating the steps from 2) to 9) to regenerate the decision trees if the node branch model has changes. The method estimating the tracking state of the WAMS has the characteristics of satisfying the real-time requirements of the system and satisfying the requirements on limited resources.