4 results about "Long gap" patented technology

The invention discloses a furnace end capable of exciting high-energy plasma through long-distance discharge and an electric flame stove. The furnace end comprises an upper shell, a lower shell, a plurality of plasma combustors, a magnetron and a furnace end fan, wherein the upper shell and the lower shell define a furnace end cavity. According to the microwave-driven gas ionization device, the breakdown working voltage between the anode needle and the cathode tube which are arranged at a long interval is reduced by microwave-driven gas ionization, and the problem of circuit instability is avoided; the magnetron stops working immediately after electrode arc striking succeeds, a special power supply and a cooling system can be omitted, and the failure rate is reduced; the two electrodes are arranged at a long interval, so that the number of times of electron collision is increased by several times, and compared with the prior art, the plasma density is improved, the efficiency is greatly improved, and the electric quantity is saved; the magnetron is directly installed between the upper shell and the lower shell of an existing metal structure of the burner, microwave leakage is effectively prevented, the magnetron does not need to be additionally provided with a shielding piece, the stability of the electric flame stove is effectively improved, and the limited space of the electric flame stove is effectively utilized.

The utility model discloses a constructional engineering structure gap grouting device, and relates to the technical field of constructional gap grouting, the constructional engineering structure gap grouting device comprises a grouting cylinder, the grouting cylinder is internally provided with a first sliding groove, the first sliding groove is internally provided with a sliding convex block in a sliding mode, one end of the grouting cylinder is fixedly provided with a rubber ring, and the other end of the grouting cylinder is provided with a second sliding groove. The grouting device comprises a grouting barrel, a roller is arranged on the outer wall of the grouting barrel, a grout outlet head is connected to one end of the grouting barrel in a clamped mode, two fixing bases are fixedly installed on the outer wall of the grouting barrel, and rotating plates are rotatably installed on one sides of the two fixing bases. A limiting block is inserted into a rotating plate to limit the rotating plate, a worker only needs to align one end of a slurry outlet head to a gap to enable a roller to make contact with the ground for supporting, and when long gap filling is carried out, auxiliary movement is carried out on the roller, so that the situation that the hand shakes due to the fact that the device is held by hand for a long time is avoided.

The invention discloses a three-dimensional dynamic reconstruction method for a long-gap discharge channel, and the method comprises the steps: collecting a multi-view synchronous image sequence of a discharge process through at least two cameras which are disposed on the same plane and are synchronously triggered, carrying out the graying, binaryzation and time correction processing of a synchronous image group at each time point, and carrying out the calculation of the multi-view synchronous image sequence. Obtaining a binarized image with time alignment; performing visual angle correction on the image, and extracting discharge channel edge points line by line in the corrected image to form an edge point set; then, constructing an overdetermined equation set by utilizing the edge point set based on epipolar constraint, and solving through singular value decomposition to obtain a three-dimensional space coordinate set; and finally, generating a three-dimensional static model of a single time point by calculating central points and radiuses of sections with different heights, and combining the static models of continuous time points in sequence to finally reconstruct a three-dimensional dynamic model of the discharge channel. According to the method, high-precision and high-efficiency three-dimensional dynamic reduction of the transient evolution process of the discharge channel is realized.