13 results about "Sapphire window" patented technology

The invention discloses a sapphire window-based nuclear magnetic resonance device and a coal seam free gas volume correction method, the sapphire window-based nuclear magnetic resonance device comprises a computer, a gas cylinder assembly, a nuclear magnetic bearing platform, a coal sample holder, a stable displacement pump and a laser emitter, the gas cylinder assembly is connected with a left end inlet of the coal sample holder, and the coal sample holder is arranged on the nuclear magnetic bearing platform; a sapphire window is arranged on the coal sample holder, laser emitted by the laser emitter faces the sapphire window to observe a cylindrical coal sample in the coal sample holder, an outlet at the right end of the coal sample holder is connected with a test pipeline, and the coal sample holder is connected with a confining pressure control pipeline. Advanced technologies such as nuclear magnetic resonance and laser scanning are applied to the free gas content simulation experiment of the coal bed gas reservoir, and the tested data are more accurate. The device can also be used for permeability testing, methane adsorption experiments, displacement experiments and the like, test results are used for evaluating distribution characteristics of free gas in geological media such as coal seams and shale, and theoretical data support is provided for energy development in China.

The invention discloses a brazing method for a sapphire-ceramic vacuum arc-extinguishing chamber window and application of the brazing method. The brazing method comprises the steps that an activation layer, a barrier layer and a brazing layer are sequentially deposited on a sapphire brazing face, and a molybdenum-manganese method is used for sintering and chemical nickel plating is carried out on an annular trepanning area of a ceramic shell; the oxygen-free copper metal foil, the kovar alloy metal foil and the nickel metal foil are compounded into a whole, the oxygen-free copper side of the obtained annular composite transition ring is aligned with the sapphire brazing layer, the copper brazing filler metal ring is placed in the middle of the annular composite transition ring, the nickel side of the composite transition ring is aligned with the nickel-plated layer at the opening of the ceramic shell, the copper brazing filler metal ring is placed in the middle of the annular composite transition ring, and the obtained assembly is subjected to vacuum brazing. Two high-strength and high-airtightness brazed joints are formed at a time, and therefore the sapphire window is connected to the ceramic shell in a sealed mode through the composite transition ring. By introducing a multi-layer composite transition layer structure, the thermal stress matching problem is effectively solved, so that a sealing interface with ultrahigh air tightness, high mechanical strength and excellent long-term reliability is realized.

The invention discloses an energetic composite material with a sandwich structure and a preparation method of the energetic composite material. The preparation method comprises the following steps: carrying out at least one coating treatment on an energetic crystal by adopting a lubricating substance to prepare the energetic crystal coated with a plurality of lubricating layers, placing the raw material system for preparing the first flexible polymer in a sapphire window for first curing treatment to form a bottom layer; a raw material system for preparing a second flexible polymer is applied to the surface of the bottom layer and pre-cured, and the energetic crystal is placed in the center of the raw material system for preparing the second flexible polymer and subjected to second curing treatment to form a middle layer; and applying a raw material system for preparing a third flexible polymer to the surface of the middle layer, and carrying out third curing treatment to form a top layer, so as to prepare the energetic composite material with the sandwich structure. The invention provides the preparation method which can be repeatedly prepared, is simple to operate, does not influence the energy density of the energetic crystal and enhances the thermal stability and safety of the energetic crystal, and meanwhile, the method can be combined with various testing means.

In order to observe the development process of the hot spot of the impact powder, a specific target device for observing the luminescence process of the impact energetic powder is provided in the patent, the thickness of the powder sample is selected, the time of the radiation observation window is accurately controlled by combining the change of the thickness of the different sapphire windows, the damage of the corresponding optical fiber head is driven by the damage of the impact sapphire in the patent, the light channel is closed at a specific time point, and finally the effect similar to the shutter of the camera is achieved; the device can be used for accurately observing the development process of the hot spot in the energetic powder, and the implementation effect shows that the device can meet the observation demand of the initiation mechanism of the explosive powder.

The utility model relates to an optical fiber packaging structure of an optical hard mirror, which comprises an outer tube with an inclined surface at the front end, a middle tube arranged in the outer tube and an illumination optical fiber arranged between the outer tube and the middle tube, an optical fiber guiding structural member is arranged in the front end of the outer tube, and a positioning inclined surface is arranged at the front end of the optical fiber guiding structural member. A positioning inclined plane is formed in the outer tube, the positioning inclined plane is flush with the inclined plane at the front end of the outer tube, a mounting through hole is formed in the positioning inclined plane, a sapphire window sheet is arranged in the mounting through hole, a crescent optical fiber light-emitting hole is formed below the mounting through hole, and the illumination optical fiber penetrates through the inner wall of the crescent optical fiber light-emitting hole; the rear end of the optical fiber guiding structural member is provided with an inclined hole communicated with the mounting through hole, and the front end of the middle tube extends into the inclined hole. The optical lens is reasonable in design, the light source emitting direction of the optical lens can be along the main optical axis of the hard lens on the premise of ensuring that the lens body is sealed, and the illumination uniformity of the hard lens is improved.

The invention discloses a self-cleaning online optical probe device, and relates to the technical field of optical detection equipment, the self-cleaning online optical probe device comprises an optical probe and a self-cleaning shell, the optical probe comprises a probe shell, a sapphire window and an optical collimating lens group, one end of the probe shell is provided with the sapphire window, and the other end of the probe shell is provided with the optical collimating lens group; a sapphire window is arranged in the probe shell, an optical collimating lens group is arranged in the probe shell, an optical fiber body is fixedly connected to one end, far away from the sapphire window, of the probe shell, the probe shell is sleeved with the self-cleaning shell, and a cleaning channel is formed in the self-cleaning shell. According to the self-cleaning online optical probe device, through the combination of the nanoscale hydrophobic coating and nitrogen or cleaning solution purging, various pollutants can be efficiently removed, viscous pollutants, fine particles, hard scale, blocky pollutants and the like can be effectively treated, it is ensured that the optical surface of a probe is kept clean for a long time, and the service life of the probe is prolonged. And the accuracy and the stability of measured data are greatly improved.

Disclosed is a hermetically sealed assembly for precompression of a martinsetic metal for use in negative pressure energy transfer systems, and method of making same. The assembly comprising a martinsteic metal disposed between and in contact with flanged sapphire windows, the flanges defining an open area therebetween to accommodate expansion and contraction of the martinsetic metal. Hermetic sealing means include a bellows element, which can comprise a convoluted cross section, at the periphery of the assembly to enable operation over temperature ranges from ambient to cryogenic without loss of integrity or leakage.

Infrared imaging sensors and methods for producing same are provided herein. An example infrared imaging sensor includes a substrate, one or more x-ray absorber layers, and a black intermediate layer disposed between the substrate and the one or more x-ray absorber layers. Example substrates include sapphire disks, sapphire windows, diamond substrates, germanium substrates, and silicon substrates.

The invention provides a pressure-resistant low-roughness oxide three-waveband antireflection film for a sapphire window and a preparation method of the pressure-resistant low-roughness oxide three-waveband antireflection film. The preparation method comprises the following steps: S1, pretreating the sapphire substrate; s2, a low-refractive-index film and a high-refractive-index film are alternately plated through ion beam sputtering, a low-refractive-index target material is silicon oxide doped with aluminum oxide, the doping amount of the aluminum oxide is 1.1 wt%-1.3 wt% of the mass of the target material, and a high-refractive-index target material is tantalum oxide; s3, carrying out heat treatment after film coating; and S4, carrying out ion etching and protection treatment. The pressure-resistant low-roughness oxide three-waveband antireflection film for the sapphire window has good pressure resistance and environmental adaptability, and meanwhile, accurate regulation and control of a spectrum can be realized.

This invention discloses a lightweight, portable, and temperature-adjustable laser-heated high-temperature blackbody furnace, comprising: a furnace body with a quartz window and a sapphire window; a graphite sheet disposed within the furnace body cavity, its surface having micron-sized pores with a depth less than the sheet thickness to improve emissivity; and a laser source disposed outside the furnace body, used to directly heat the graphite sheet through the quartz window. By adjusting the laser power, the graphite sheet can be stabilized at any set temperature within the range of 1000-2500 K, and energy is radiated outward through the sapphire window. This invention employs direct laser heating combined with the micron-sized pore structure on the graphite sheet surface, achieving high and stable surface emissivity without the need for a coating. Through the combined design of a graphite ring, a graphite rod support, and a multi-layered thermal insulation structure, heat conduction loss from the radiator is effectively suppressed, ensuring that the furnace shell remains below 100°C even at the highest operating temperature, achieving a portable design that eliminates the need for a water-cooling system.

The utility model discloses a kind of diamond anvil cell press cavity with visual online pressure marking superhigh pressure inflation equipment, including shell, the inside middle position of shell is provided with baffle, the inside below of shell is provided with inner frame, the inside of shell is provided with superhigh pressure operating assembly and superhigh pressure inflation assembly;Superhigh pressure operating assembly includes superhigh pressure container, superhigh pressure container includes shell, the front end of shell is provided with front end sealing mouth, the inside of shell is provided with diamond pressure cavity placement area, the rear end of shell is provided with flange sapphire window sealing area for optical measurement and imaging observation, superhigh pressure operating assembly further includes the pressure calibration and imaging system ruby pressure marking system for diamond pressure cavity in superhigh pressure container;By adopting electrical equipment combination, complete remote operation function, make user operation more safe;Visual cavity design is used, cooperate optical path imaging acquisition system, realize customer visual pressure marking function.

The utility model relates to a kind of optical hard tube endoscopes of high temperature and high pressure resistance, including mirror body, optical assembly, stainless steel inner tube is equipped between mirror body and optical assembly, stainless steel middle tube, the rear end outside of optical assembly is equipped with eyepiece cavity sleeve, sapphire fixed steering head is equipped between the front end of stainless steel middle tube and optical assembly, sapphire window piece is equipped in the front end inside of sapphire fixed steering head, sapphire window piece, sapphire fixed steering head and optical assembly between filling full glue form first thick glue layer;The rear end of eyepiece cavity sleeve is equipped with sapphire exit window piece, sapphire exit window piece, eyepiece cavity sleeve and optical assembly between filling full glue form second thick glue layer.In the front and rear ends of hard tube endoscope, the scheme of filling full glue is used, and compared with mainstream sapphire metal brazing process, the process difficulty and cost greatly decline, and the use cost is greatly reduced;Meanwhile, the sealing cavity filled with glue has certain buffering property.

The utility model discloses a single chamber high temperature fuel cell in situ raman spectrum testing arrangement, including pool body, sample platform, electrode piece, binding post, sapphire window piece and pool cover, be provided with test cavity in the pool body, and the sample platform detachable setting is in test cavity, is provided with battery storage groove on the sample platform, and the electrode piece is electrically connected with battery and binding post respectively, still be provided with the heating base of being located sample platform bottom in the pool body, be provided with the heating cavity of heating assembly entry on the heating base, still be provided with the air inlet and the gas outlet of with test cavity intercommunication on the pool body, the gas outlet is connected negative pressure equipment. The device can carry out in situ raman spectrum test in the reaction process of high temperature hydrogen / oxygen fuel cell, compared with the prior art device can only carry out test in the first and last stage, and the device can more complete and comprehensive realization battery reaction monitoring. Meanwhile, the whole device structure is compact, and the device size is compressed to meet the conventional raman spectrum test height requirement.