34results about How to "Does not break continuity" patented technology

The invention discloses a novel assembly method of a hot aerosol coolant and a hot aerosol generating agent, which comprises the following steps: step 1) pre-forming the hot aerosol coolant into small pieces; step 2) making step 1) into small pieces The thermal aerosol coolant in a discrete state is mixed with the thermal aerosol generator, wherein the amount of the thermal aerosol coolant is 5% to 50% of the thermal aerosol generator; step 3) pressing, casting or In bulk, assemble the mixture into cartridges for fire extinguishing equipment. The novel assembly method of the present invention can make the thermal aerosol coolant timely and fully exert the heat-absorbing and cooling effect when the thermal aerosol generating agent undergoes a strong exothermic reaction; at the same time, it does not destroy the continuity of each active component of the thermal aerosol generating agent Therefore, it will not have a great impact on its combustion and injection performance, which ensures the effective, fast and safe release of the hot aerosol generating agent.

This invention discloses a kind of composite materials for electroheating and thermal-overload protection, which comprises 4~7wt% carbon nanotubes and 96~93wt% high-density polyethylene. In this invention, melting blending is adopted and the steps are as follows: carbon nanotube powders and high-density polyethylene particles are weighed according to the ratio above and put into a mould after mixing to homogeneity at a temperature of 140~170 deg. C. The mixture is first preheated at a temperature of 165~180 deg. C for 5~20 minutes and compressed under a pressure of 5~20MPa and 10~30MPa for 5~20 minutes, respectively. It is then demoulded and cooled to room temperature. The composite materials in this invention adopt high-density polyethylene as matrix and carbon nanotubes as additives and have the advantages of lower additive amount compared to carbon black and no damnification to matrix continuity. This kind of materials has good PTC properties which promise both electroheating and thermal-overload protection functions and self-limited temperatures. Besides, this invention also has the advantages of simple technique, easy operation and considerable repeatability and is thus suitable for large-scale industrial production.

The invention relates to a tennis ball collection device for tennis courts, which effectively solves the problem that it is inconvenient to pick up tennis balls near the block and that picking up the ball at the same time will affect training; There is a reel between the side plates, there is a conveyor belt on the reel, and there is a Velcro on the upper surface of the conveyor belt; there is a ball-catching device between the two side plates, and the ball-catching device includes two support rings, which are fixed between the two support rings. The ball receiving bucket is equipped with a rotating shaft in the front and rear directions inside the ball receiving bucket, and there are a plurality of ball dials evenly distributed on the circumference of the rotating shaft; a bottom plate is fixed between the front and rear support rings, and a box is arranged above the bottom plate. The side and the front side are open, and the side wall of the box is provided with through holes; the box can move back and forth left and right; the bottom of the box is equipped with multiple vertical guide rods, which can move up and down and reset downward; The left and right movement of the body can drive a plurality of guide rods to move up and down, and the present invention can pick up balls and clean them without feeling.

The invention discloses a 3D printing forming method of a metal sample containing built-in inclusions, which comprises the following steps: modeling the three-dimensional model of the metal sample and obtaining its layer profile data; using a laser cladding forming method with the help of a high-energy laser beam A molten pool is formed on the metal plate; the powder of the metal sample is used as the base material, which is transported into the molten pool through the powder feeding device and the powder nozzle for melting, and the current layer is printed out, and clad layer by layer to the designated position of the inclusion; The inclusions whose shape and composition are known are fixed at the designated position, and continue to be clad and formed layer by layer to the height required by the metal sample. The invention adopts the laser cladding forming technology, and puts the inclusions with known shapes into the metal matrix during cladding. The method of the present invention can not only prepare metal samples of various complex shapes, but also ensure that the specific position and original shape of the inclusions can be accurately located without destroying the continuity of the metal matrix, which improves the research efficiency of the inclusions in the metal. Precision and accuracy.

The invention belongs to the technical field of forging and relates to a grain refining efficient forging method of high-alloy ultrahigh-strength steel large-scale die-forged parts. The method is used for machining large-scale die-forged parts such as an airplane landing gear and includes the steps of shearing billets, heating, manufacturing billets, heating and die forging. The method has the advantages that the grain refining efficient forging method of the high-alloy ultrahigh-strength steel large-scale die-forged parts is researched for the first time, the forged parts acquire 8-level grains while the production efficiency of the forged parts is 5-8 times of that of conventional forged part production, and noises during production is reduced by more than 30 decibel; the high thermoplasticity of high-alloy high-strength steel is combined with a fast forging machine and a large hydraulic machine, billet manufacturing and die forging heating number deformation amount are reasonably distributed, and the grain refining forging method of the large-scale forged parts is formed.

The invention relates to a method and device for monitoring the seepage of an underground diaphragm wall of a foundation ditch of a building. The method comprises the following steps of: (1) constructing a borehole at the center of the foundation ditch, arranging a power supply electrode A at the bottom of the borehole, and arranging another power supply electrode B at a place 7-10 times of the length of the foundation ditch away from the center of the foundation ditch; (2) arranging detection points on the ground surface along the underground diaphragm wall in a manner of surrounding the foundation ditch, and arranging a measuring electrode M and a measuring electrode N at each detection point along the direction vertical to the underground diaphragm wall; (3) marking out planar positions with abnormal formula (shown in a drawing); (4) marking out vertical elevations with the abnormal formula (shown in the drawing); and (5) obtaining positions corresponding to the planar positions with the abnormal formula obtained in the step (3) and the vertical elevations with the abnormal formula obtained in the step (4), thereby obtaining positions in seepage. The invention further relates to a device for monitoring the seepage of the underground diaphragm wall of the foundation ditch of the building. By using the method and device for monitoring the underground diaphragm wall of the foundation ditch of the building, the damage to an underground diaphragm wall body can be avoided, and the operation is very simple and convenient.

A coherent optical time domain reflectometry coded based on a detection frequency comprises a laser (1), a first coupler (2), a frequency coder (3), a radio frequency driver (4), a circulator (5), an optical interface (6), a light filter (7), a second coupler (8), a photoelectric detector (9), an intermediate frequency amplifier (10), a data acquisition module (11), a signal processing module (12), and a display module (13). A laser beam emitted by the laser (1) is frequency-coded by the frequency coder (3) to obtain detection frequency pulsed light and a filled light pulse sequentially complementary to the detection frequency pulsed light. The detection frequency pulsed light and the filled light pulse are different in frequency, and after their backward Rayleigh scattered signals in an optical fiber line are returned, the signals enter the light filter (7) through a third port; a detection optical signal and local oscillation light that are obtained after the filtering are coherent in the second coupler (8), and then the photoelectric detector (9) outputs a coherent intermediate frequency signal; and finally, the intermediate frequency signal is collected and processed to obtain a timing curve reflecting characteristics of the optical fiber line.

The invention provides an interferometric phase filtering method based on a difference chart and compensation filtering. The interferometric phase filtering method comprises the steps of: firstly, extracting principal components of interferometric phases from an input interferometric phase image through frequency domain filtering based on the differential chart, so as to reduce density of interferometric fringes in the residual interferometric phase image and facilitate subsequent processing; and secondly, performing compensation filtering on the residual interferometric phase image, wherein compensation filtering adopts BM3D filtering taking a phase derivative variogram of the residual interferometric phase image as self-adaptive filtering parameters, and can better extract detail components of the interferometric phases. The interferometric phase filtering method comprises frequency domain filtering and space domain filtering, is suitable for processing the interferometric phases containing dense interferometric fringes, and can effectively filter out noise without destroying the continuity of the dense interference fringes.

The invention discloses a novel BT / HA biphase piezoelectric bioceramics bone tissue engineering prosthesis and a preparation method thereof. The method includes: separately preparing BT and HA slurries; designing a communication device to connect two printing barrels; printing piezoelectric bioceramics with a melt extrusion 3D printer (FDM) that can simultaneously print multiple barrels Bone tissue engineering scaffold; the printed scaffold is dried and sintered at high temperature in an air atmosphere to obtain a piezoelectric bioceramic scaffold. The beneficial effects of the present invention are as follows: 1. By using a communication device to connect two barrels containing different slurries, it is ensured that the same fiber extruded by the 3D printer has two continuous phases, which is different from the traditional single barrel. Compared with extrusion printing, a new composite method of two-component materials is created, so that the constructed scaffold has a new structure; 2. The content of HA / BT can be freely adjusted by adjusting the viscosity of the two slurries without destroying Piezoelectric phase continuity.

The invention provides a coaxial radio frequency cable run-through sealing part. The sealing part comprises a circular adhesive pouring cylinder, a cable fixing board, an isolation assembly and cables, wherein more than two cable fixing holes for fixing and sealing cables are formed in the cable fixing board; the cable runs through the cable fixing holes and the adhesive pouring cylinder to enter a sealed container; the outer sheath on one section, in the middle of the adhesive pouring cylinder, of the corresponding cable is peeled off to form an adhesive permeating section; the exterior of the adhesive permeating section is surrounded by the isolation assembly; an adhesive inlet hole is formed in the isolation assembly; one end of the adhesive pouring cylinder is connected with the cable fixing board through a second flange; and the adhesive pouring cylinder is full of liquid sealant for sealing and blocking slot leakage among cables and the internal slot leakage of cable external conductors. According to the coaxial radio frequency cable run-through sealing part, the problem existing in sealing multiple cables led out of the sealed container is solved; meanwhile, the cable inner sealing and cable outer sealing are realized; and therefore, the coaxial radio frequency cable run-through sealing part has the advantages of no extra attenuation in signal transmission, simple structure, and reliable sealing performance.