4results about How to "Save cost" patented technology

The application provides a cross-clock domain time information correction method and a distributed system thereof. The method comprises the following steps: a sub-node sends a digital signal carrying its own clock and data information to a master node, and then the master node recovers the sub-node clock and data; the master node is configured with a sub-node clock counter and a master node clock counter; the master node samples one clock by using the other clock, and when the lag time between the two clocks reaches a single period of the clock with a higher frequency, the sub-node clock counter is adjusted to keep the two clock counters consistent; and the time stamp of the data of the sub-node in the master node clock domain is obtained through the sub-node clock counter and the master node clock. The application has a simple structure, saves the calculation cost, and has high time measurement precision.

This invention discloses a single-pass submerged arc welding method for high-penetration fillet welds, comprising: cleaning the area to be welded before welding without beveling; rotating the submerged arc welding jig to a first predetermined angle with the horizontal plane, and placing the workpiece panel on the jig to achieve a near-ship-shaped welding position; adjusting the submerged arc welding torch vertically downwards, first aligning the submerged arc welding wire with the right-angle vertex of the T-shaped fillet weld, and then setting the wire offset to a second predetermined range; setting the submerged arc welding process parameters, and using single-pass submerged arc welding to weld the T-shaped fillet weld. This invention solves the welding problems of insufficient and unstable penetration depth in T-shaped fillet submerged arc welds without beveling, and can obtain reliable high-penetration welds; the submerged arc weld has a uniform and aesthetically pleasing appearance, eliminates the beveling process and associated costs, and significantly improves welding efficiency. This invention can be widely applied to the welding and fabrication of steel bridge components such as steel plate beam I-beams and steel tower medium-thick plate rib units.

The application provides a bridge railing bridge ascending and descending safety lifting tool, which comprises a mounting frame, a pulley seat and a lifting assembly; the mounting frame is erected above a bridge, the bottom corners of the mounting frame are provided with connecting pieces, a plurality of connecting pieces are connected with rails above the bridge respectively; the pulley seat is installed at the edge of the bridge, and a first fixed pulley is arranged on the pulley seat; the lifting assembly comprises a first lifting rope and a winch driving piece; the winch driving piece is installed at the top of the mounting frame, the winch driving piece is connected with the top end of the lifting rope, the winch axis is parallel to the horizontal direction, and the bottom end of the first lifting rope is connected with the railing by passing through the first fixed pulley. The bridge railing bridge ascending and descending safety lifting tool provided by the application has the advantages that the mounting frame is installed on the bridge, occupies less space, the railing can ascend and descend the bridge by using the bridge, the use space is saved, the tool is not affected by the environment below the bridge, has high applicability, and the work efficiency is improved.

The utility model provides a denitration VOC (volatile organic compound) integrated device which comprises a combustion chamber and a plurality of heat storage chambers communicated with the combustion chamber, an air inlet branch pipe, an exhaust branch pipe and a purging branch pipe are arranged at the bottom of the heat storage chamber; a low-nitrogen combustor is arranged at the top of the combustion chamber; a first-stage heat accumulator, a reducing agent spraying opening, an SCR device and a second-stage heat accumulator are sequentially arranged in the heat accumulation chamber from top to bottom; scavenging valves are arranged on the air inlet branch pipe and the exhaust branch pipe; according to the integrated RTO device disclosed by the utility model, denitration VOC is integrated into the integrated RTO device, so that the occupied area is saved; mutual abrasion between the catalyst and the heat storage bricks is avoided; the overall service life of equipment is prolonged; the low-nitrogen combustor reduces NOX generation from the source, the catalyst load of the SCR module is reduced, the catalyst activity attenuation rate is slowed down, the ammonia escape rate is effectively reduced, and secondary pollution is avoided.