42results about How to "Strong on-site practicability" patented technology

The invention discloses a dismounting method, a mounting method and a dismounting and mounting device for hydroelectric gate wheel shaft sleeves. The dismounting and mounting device comprises a supporting base, two supporting rods, a crossbeam, a jack, a pushing cylinder and a plurality of spacer plates. The dismounting method mainly utilizes the dismounting and mounting device, and comprises thesteps that the dismounting and mounting device is first placed at an even position, a wheel, the used shaft sleeve of which needs to be dismounted, is then placed on the supporting base, the pushing cylinder is vertically put upon the used shaft sleeve of the wheel, the plurality of spacer plates are then placed upon the pushing cylinder, the jack is mounted on the spacer plates, and finally, pressure is applied by the jack to press the used shaft sleeve out of the wheel. The mounting method also mainly utilizes the dismounting and mounting device, and comprises the steps that the dismountingand mounting device is first placed at an even position, a wheel into which a new shaft sleeve needs to be mounted is then placed on the supporting base, the new shaft sleeve is placed on a shaft holeof the wheel, the plurality of spacer plates are then placed upon the new shaft sleeve, the jack is mounted on the spacer plates, and finally, pressure is applied by the jack to press the new shaft sleeve into the wheel.

The invention provides a stay wire bending device and a use method thereof. The stay wire bending device is characterized by comprising a first bracket and a second bracket; and the first bracket is hinged to the second bracket, the first bracket is rotatably connected with a first rotating wheel, the second bracket is rotatably connected with a second rotating wheel, and an interval is formed between the first rotating wheel and the second rotating wheel. By means of the stay wire bending device, construction time can be saved, time and labor are saved, the fabrication cost is low, field practicability is high, and the stay wire bending device is easy to operate, high in safety coefficient and good in application effect.

The invention relates to a shielding suit complete-set device for measuring step voltage and contact voltage. The shielding suit complete-set device comprises a shielding suit; the shielding suit includes a right foot insulating boot part, a left foot insulating boot part and a glove part; an inter-electrode voltage measuring module (2) is fixed on the shielding suit; the inter-electrode voltage measuring module (2) is provided with three signal input ports and a signal output port; and the three signal input ports are a first signal input port, a second signal input port and a third signal input port. The device can be applied to the step voltage and contact voltage signal measurement in power system ground grid comprehensive evaluation and measurement. The device has high integration degree, can accurately measure all step voltage and contact voltage in a grounding power grid region under a grounding power grid comprehensive evaluation test condition or direct current ground loop grounding operation mode.

The invention discloses a locating and falling preventing device for a moving smoke cover of a rotary furnace. The locating and falling preventing device is composed of multiple connecting units for connecting the moving smoke cover of the rotary furnace with a smoke cover fixing beam. Each connecting unit comprises a fixed part and a moving part. The tops of the fixed parts are installed on the smoke cover fixing beam through a girder fixing base. The bottoms of the moving parts are installed around the moving smoke cover through a smoke cover fixing base. The fixed parts and the moving partsare installed in a guiding manner through sliding pairs. The smoke cover fixing base is provided with chains for hoisting. The chains for hoisting are connected with a hoisting device arranged on thesmoke cover fixing beam. The device further has double falling preventing functions on the basis of guiding, the function of a set square and a guide groove is utilized, guiding is more stable, the falling preventing function can also be achieved, and the chains in a moving casing pipe and a fixed casing pipe can have a secondary falling preventing function. After the device is installed on the moving smoke cover, the fault rate is reduced obviously, and meanwhile the service life of the moving smoke cover is prolonged.

The invention discloses a three-phase inconsistency protection test box for a circuit breaker body, which relates to the field of power system relay protection acceptance and regular inspection work. The box includes three liquid crystal display timers, and the display part is embedded in a panel for external display. Each liquid crystal The display timer includes a pair of power contacts, a pair of start-up contacts and a pair of stop-watch contacts. There are three pairs of start-up jacks and three pairs of stop-watch jacks on the panel, and each pair of start-up jacks is connected to a pair of Open meter contact, each pair of stop meter jacks is connected to a pair of stop meter contacts; there are four jacks THG, THA, THB, THC and three buttons STA, STB, STC on the panel, inside the THG jack It is connected to the same end of the three buttons, and the three jacks of THA, THB, and THC are respectively connected to the other end corresponding to the three button switches of STA, STB, and STC; the panel is also equipped with a power switch and a grounding jack for the test box shell. AC 220V power supply is adopted. The invention improves the efficiency of regular inspection of protection, shortens the maintenance time during power outages, and enhances the operation reliability of the power grid.

The invention provides a method for selecting a modularized power supply scheme. By modularizing the two-way supply and demand standards, summarizing and classifying them, performing step-by-step matching, and then summarizing and fine-tuning, the power supply scheme that meets customer requirements is finally formulated efficiently and conveniently. The depth of the power supply scheme designed by the method of the present invention is improved, which is convenient for customers to design and construct, ensures high quality and high standards of customer engineering, and can ensure the safety and strength of the power grid after being connected to the power grid; it not only ensures the important elements and requirements of the scheme Nothing is missing, and it also provides the best reference for the design.

The invention provides an oil extraction and slag removal method and system for a vertical tar-ammonia water separating process. The system comprises a mechanical slag scrapping tank, a tar-ammonia water separating tank used for receiving a mixture of tar, ammonia water and small-granule tar slag obtained in primary separation, a tar slag pump used for extracting the small-granule tar slag and the tar at the bottom of the tar-ammonia water separating tank, a secondary slag removal apparatus used for receiving the small-granule tar slag and the tar extracted from the bottom of the tar-ammonia water separating tank through the tar slag pump and carrying out secondary separation on the small-granule tar slag and the tar, a tar slag bucket used for receiving large granule tar slag obtained in primary separation and small-granule tar slag obtained in secondary separation and a tar intermediate tank used for receiving tar discharged from the secondary slag removal apparatus and having undergone secondary separation. The system has the advantages of convenience in extraction of the tar, good tar slag removal effects and capacity of thorough discharge of the small-granule tar slag from the system, so blockage of the system is avoided and production of the system is continuous and stable.

The invention discloses a modular power supply scheme automatic-generation method based on the AR technology and the VR technology, and belongs to the technical field of power distribution. The method comprises the steps of integrating the basic databases of a power grid, acquiring the architecture diagram and the openable capacity of the power grid, and ensuring the availability of a power supply point; subjecting a power supply scheme to modular refinement and typesetting, and setting the parameters of options in each type and calibrating the parameters so as to form system point selection parameters; importing the architecture diagram and the openable capacity data of the power grid into a program, and compiling the power supply scheme and a support drawing in cooperation with the system point selection parameters; and displaying the power supply scheme and the support drawing in the 3D form based on a virtual reality module. The related system of the above method comprises an inputting module, a checking and reminding module, a drawing editing module and a virtual reality module, wherein the above modules are sequentially connected. The method is high in efficiency, formal in manufacture, strong in scheme depth property and good in interactivity. Based on the method, construction problems can be found out more quickly and more conveniently. Therefore, the requirements of users in rapid power transmission can be met.

The invention relates to the technical field of multistage fracturing of oil fields, in particular to a sectioned fracturing method adopting coiled tubing dragging sand-blasting perforation and annulus sand-filling. The sectioned fracturing method comprises the steps of first, well dredging and second, tool connecting. According to the sectioned fracturing method adopting coiled tubing dragging sand-blasting perforation and annulus sand-filling, perforation and fracturing integration is achieved through a one-trip pipe column; and interlayer packing is carried out through a sand-filling mode of induction-type sand plugging, and accordingly, a sand-blasting perforation dragging sectioned fracturing technique in a small casing is achieved, namely, coiled tubing dragging for sectioned fracturing of the pipe column and annulus sand-filling for achieving the sectioned fracturing technique can be conducted in a phi 101.6 mm small-size tail tube in a 5.5-inch casing sidetrack drilling horizontal well through the coiled tubing dragging sand-blasting perforation and annulus sand-filling sectioned fracturing method. According to the method, packing operation can be completed without a packer, therefore, by adopting the method, the cost of the packer is saved, and accordingly the construction cost is reduced.