52results about How to "Meet site needs" patented technology

The invention relates to the field of mine dynamic disaster monitoring pre-warning, and aims to provide an identifying and pre-warning method of a mine disaster multi-parameter local danger zone. Theposition and the danger level of the local danger zone can be accurately identified, a mine can be guided in a targeted mode for disaster prevention, and the site requirements for all mines can be met. The pre-warning method comprises the steps that 1, spatial positioning is conducted on mine disaster monitoring points; 2, initial risk indexes I<single point initialization> (I<single point initialization> is larger than or equal to zero and smaller than or equal to one) of all the monitoring points are obtained; 3, conditions of other monitoring points around all the monitoring points are retrieved; 4, the initial risk indexes of the monitoring points are corrected; and 5, the position and the risk level of the local danger zone are obtained. According to the identifying pre-warning methodof the mine disaster multi-parameter local danger zone, the problem that the mine can not be guided in a targeted mode for disaster prevention due to the fact that the position and the risk level ofthe local danger zone can not be identified accurately through an existing pre-warning method is solved.

The preparation equipment comprises a bottom plate, a stirring tank is fixedly connected to the side position of the top end of the bottom plate, a discharging pipe is fixedly connected to the bottom end of the stirring tank, and a vibration stirring mechanism is fixedly connected to the position, corresponding to one side of the stirring tank, of the top end of the bottom plate; the vibration stirring mechanism comprises a fixed plate, a rotating rod, a rotating block, a shaking plate, a rotating shaft, a rotating motor, a sliding plate and a limiting plate, the structure is scientific and reasonable, the use is safe and convenient, the vibration stirring mechanism is arranged, the rotating motor drives the rotating shaft to rotate, the rotating shaft drives a gear to rotate, and the gear and a tooth bulge are matched through the arrangement of the gear and a sector gear; and an incomplete gear mechanism is formed, the moving frame is driven to slide repeatedly, the shaking plate is pushed through cooperation of the rotating plate, the shaking plate rotates and swings along the rotating rod, concrete in the mold is stirred, and the uniformity of the concrete in the mold is improved.

The invention relates to a segmented fracturing device in the field of petroleum machinery, in particular to a segmented fracturing sliding sleeve switch device. Including upper joint, upper connecting sleeve, central tube, upper fixing sleeve, spring, upper inner sliding sleeve, upper sliding support, connecting rod, sliding sleeve switch claw, pin, lower sliding support, lower fixing sleeve, lower inner sliding sleeve , the lower connecting sleeve and the lower joint; the upper end of the upper joint is connected to the oil pipe, the lower end of the upper joint is threadedly connected with the upper end of the upper connecting sleeve, the lower end of the upper connecting sleeve is threaded with the upper end of the upper fixing sleeve, and the right end of the upper fixing sleeve is arranged to slide support. The principle of the invention is to store and release the elastic potential energy of the spring under the action of high-pressure liquid to realize the radial extension and contraction of the sliding sleeve switch claw, and complete the opening and closing of the fracturing sliding sleeve. Beneficial effects: the present invention has the advantages of simple structure, convenient operation, stable and reliable operation, and effectively meets the on-site requirements of multi-stage sliding sleeve open-hole staged fracturing of horizontal wells in various working conditions, and realizes full fracturing development of reservoirs.

The invention discloses a method for preparing ladle routes for transportation equipment considering the constraints of production equipment dispatching plans. The minimum and the minimum transport time are performance indicators; the weight of the ladle on the path is greater than the weight of the ladle full of molten steel, the transportable time of the crown on the path is within the range specified in the furnace plan, the maximum speed of the crane and the furnace plan. The available path length range and the temperature drop of molten steel transported in the path do not exceed the specified temperature range of the furnace process as constraints; the path of ladle transportation is used as the decision variable, and a mathematical model of the problem is constructed; a ladle path heuristic based on multiple priorities is designed Formula preparation method; on the basis of determining the plant layout and furnace schedule, determine the ladle route priority according to the importance of performance indicators and sort the available routes, and decide the ladle transportation route.

A construction method of a combined formwork. The combined formwork is used to first pop up the position lines of the wall body, the door opening, and the window opening on the floor, and then set up columns respectively, take a plurality of panels, connect with the columns, and use connecting beams to connect them. Between the adjacent columns, form a whole, then process the panel corresponding to the door opening and the panel corresponding to the window opening, and use the first wooden board, the second wooden board, and the third wooden board to block, so as to obtain the door opening forming mold and the window opening forming mold, and finally , pouring concrete, removing the formwork after forming, and obtaining the wall. The invention can save a large amount of construction period, thereby reducing the construction cost, and can flexibly adjust the formwork according to the construction site to meet the site requirements of the construction unit.

The invention relates to a station control box interface splitter, which comprises a 485 protocol processor A, a 485 protocol processor B, a splitter CPU, a relay, an operational amplifier and a switching circuit. The splitter CPU is connected with the 485 protocol processor A, the 485 protocol processor B, the relay and the switching circuit respectively; a 485 serial data port is formed on the splitter CPU; a 485 serial data port I is formed on the 485 protocol processor A; a 485 serial data port II is formed on the 485 protocol processor B; an S1 pin of the relay is connected with an output interface of an MIC audio signal, an A pin of the relay is connected with an input interface I of the MIC audio signal and a B pin of the relay is connected with an input interface II of the MIC audio signal; an AF audio signal input interface, an AF audio output interface I and an AF audio output interface II are formed on the operational amplifier; and the switching circuit is provided with a DC 13.8V power input interface, a power output interface I and a power output interface II. The station control box interface splitter has the advantages of expanding a station control box interface, increasing the number of external station control boxes, making a plurality of attendants share the same radio station, reducing the system cost and meeting the on-site demand.

The invention discloses a method for sequentially recording events in a distributed control system, and belongs to the technical field of distributed control systems. According to the method, an internal clock of the distributed control system is synchronized by a satellite clock of a global positioning system, phenomena that events recorded by a sequence of event recording system are omitted, and the sequence of event occurrence time recorded by the sequence of event recording system is disordered and the like are eliminated, relative time errors of the events of the sequence of event recording system are reduced, the capacity of the sequence of event recording system and real-time of acquiring and processing the events of the sequence of event recording system are improved, the accuracy of analyzing accidents by the distributed control system is further improved, and the field requirement of the distributed control system is met.