43results about How to "Not afraid of corrosion" patented technology

The invention discloses a metal PTC electric heating tube component of an air conditioner. A wound PTC heating filament of which two ends are sleeved and fixed with a conductive bar respectively, is placed in the center of a copper-plated iron pipe; a part of the conductive bars at two ends of the wound PTC heating filament is positioned outside the copper-plated iron pipe; magnesium oxide powder as heat conducting and insulating powder is filled in the copper-plated iron pipe; the wound PTC heating filament is tightly pressed in the center of the magnesium oxide powder in the copper-plated iron pipe; an aluminum pipe of a plurality of aluminum radiating fins is sleeved outside an expansion sleeve of the copper-plated iron pipe, namely the copper-plated iron pipe is tightly matched with the aluminum pipe, and the aluminum pipe is tightly matched with the aluminum radiating fins; and pipe orifices at two ends of the copper-plated iron pipe are sealed by silicon rubber and then sleeved into a porcelain head. The metal PTC electric heating tube component has the advantages of reasonable structure and better safety performance and durability. A manufacturing method for the component comprises the following steps: cutting the pipe, grinding the pipe, drilling the pipe, cleaning, winding wires, cleaning, drying, threading, measuring wires, spot welding, filling, stuffing a film, measuring withstood voltage, contracting the pipe, detecting the length of the pipe, middle inspection, peeling, pulling out colloidal particles, cutting a pin, straightening, inversing pipe angles, expanding the pipe, sealing, measuring the withstood voltage, measuring insulation, and measuring resistance.

The present invention relates to a conductive diamond film for electrode and its preparation method. It is mainly applicable to electrochemical analysis and detection. Said film contains 0.3%-5% of boron and 99.5%-99.7% of carbon content, and is prepared by adopting microwave reinforced chemical gas phase deposition process. In the course of preparation using silicon as base, making the silicon base undergo the processes of sand-blasting, cleaning, placing in diamond powder and ethyl alcohol mixed solution, ultrasonic wave treatment, and then placing the above-mentioned material in settling chamber, selecting and using hydrogen and methane mixed gas as reaction gas of carbon source, and selecting and using 1% of trimethyl borate and 99% of hydrogen gas mixed gas as boron-doping gas source, sending microwave whose frequency is greater than 2GH2 into the settling chamber so as to make gas being in settling chamber produce plasma. By controlling flow speed of the above-mentioned gas source and growth time the diamond film with required content and thickness can be obtained. Said diamond film can be directly used as electrode.

The invention relates to a non-contact magnetic transmission absolute angle sensor for a steering system of an automobile, comprising a magnetic cylinder (1), a CPU control unit (7), a magnetic wheel mechanism and Hall sensors, wherein the magnetic wheel mechanism comprises two driven magnetic gears and a driving magnet wheel (5) which is in mesh connection with the driven magnetic gears, and one magnetic steel (1) is installed on the central part of each driven magnetic gear; the driving magnet wheel is fixed on a steering column (8); and one Hall sensor is installed adjacently to each magnetic steel, and the Hall sensors are connected with the CPU control unit by data wires. The invention has the advantages of low requirement on environment, high cost performance, wide range of measurement, insensitivity to error caused by temperature, convenient installation, etc.

The invention discloses a waste heat recovery for condensing type anti-corrosive gas/oil-fired boiler, which can effectively recover the physical heat of boiler flue; not only lots of sensible heat is recovered, but also the latent heat of vaporization discharged by condensation of water vapor. The structure is as follows: a common heat tube heat exchanger body and a solution spraying device are included. The heat tube heat exchanger body is used for transferring the heat from the flue side to the other side by the shock transmission of the heat tube, so as to heat the air or water; the solution sprayed by the sprayer is uniformly distributed in the heat exchange tube on the flue side and on the inner wall of the heat exchanger, so as to remove the corrosion from the weakly acidic solution formed by condensation of water vapor in the flue of the boiler.

The invention discloses a design structure of a lightweight carbon fiber container. The container comprises an upper cover and a base, is formed in an open uncovering mode, and is compact in structureand light in weight. Rainproof, sealing and dustproof functions are achieved. Proper temperature, humidity and mechanical environment is provided in the transportation process. A carbon fiber material is adopted to form a container structure part, the design is reasonable, and the construction is simple and convenient. The carbon fiber has many excellent performances, and has the advantages of high axial strength and modulus, low density, high specific performance, no creep deformation, ultrahigh temperature resistance in a non-oxidation environment, high fatigue resistance, small thermal expansion coefficient, anisotropy and good corrosion resistance. High electric conduction and heat conduction performance, high electromagnetic shielding performance and the like are also realized.

The invention relates to an ECU control system of a power surf board, a working method thereof and a power surf board. The ECU control system comprises a control handle, wherein the control handle isprovided with an optical fiber luminous flux switch; the control handle is triggered to enable the optical fiber luminous flux switch to output a digital control signal, and the digital control signalis transmitted to a processor module via optical fibers through an optical coupled isolator; the processor module is suitable for control over work of the ECU control system according to the digitalcontrol signal. According to the ECU control system of the power surf board, the working method thereof and the power surf board, the digital control signal is transmitted through the optical fibers,a common electric wire switch mode is changed thoroughly, it is not needed to be worried about electrical signal loss or short-circuiting caused by water and seawater corrosion; since a PVC optical fiber cable is soft, high in strength and not prone to breaking, the using safety and reliability of the power surf board are improved greatly.

The invention relates to a preparation method of a composite board required by manufacturing industry of desks/chairs and furniture. The method comprises the steps of extrusion and hard compression at constant temperature. The method comprises the following steps: compositely and uniformly stirring and dehydrating PVC (polyvinyl chloride), wood meal, calcium powder and related materials in a high speed machine, sending into an extruding machine, heating to 180-230 DEG C in the extruding machine, carrying out foaming and extrusion, sending into a thermal insulation cabinet, and sending into a hydraulic machine mold, wherein a mold with required shape is arranged in the hydraulic machine, the mold pressure of the hydraulic machine is 300-2400 tons and is determined by the size of the product, and a quick refrigerating plant is arranged in the mold, so that the extruded mixture can be quickly cooled, molded and demolded. The composite board has the characteristics of high toughness, high hardness, worm resistance, corrosion resistance, moisture absorption resistance and no deformation, can be nailed or punched, can not be influenced when being put outdoors for three years, can be reutilized, is free of formaldehyde, can be used in middle and small desks/chairs and household kitchens, and has the advantages low cost, beautiful appearance and high quality.

The production process of viscose filament with nanometer chitin includes the steps of mixing, grinding, filtering, injecting, acid bath treatment, forming, washing and stoving. It features the mixing step to compound chitin solution with chitin, desalted water and assistant; and the injecting step comprising suction filtering the chitin solution and adding the chitin solution into raw spinning liquor with the adding ratio being 20 ml to 1L. The viscose fiber with nanometer chitin of the present invention has tightly combined chitin, and lasting and stable chitin function. The present invention expands the application range of viscose product.

The invention relates to a spiral inner-tube vacuum heat collecting tube suitable for large temperature difference. The spiral inner-tube vacuum heat collecting tube comprises an outer tube, a sealing element, an inner tube and a supporting tube, wherein the sealing element is used for sealing the two end parts of the outer tube and enclosing a vacuum space; the inner tube is arranged inside the outer tube, and two ends of the inner tube penetrate out of the sealing element; two ends of the supporting tube are connected with the sealing element, and the supporting tube is used for supporting the inner tube; and the inner tube comprises a spiral section located in the middle and linear sections located at two ends, wherein the spiral section is wound on the supporting tube, the linear sections penetrate out of the sealing element, and annular bulges for preventing the linear sections from sliding relative to the sealing element are also arranged at positions, penetrating out of the sealing element, on the linear sections. By using the spiral inner-tube vacuum heat collecting tube, a favorable vacuum degree can be kept between the outer tube and the spiral inner tube under the conditions of high temperature and large temperature difference; and the spiral inner-tube vacuum heat collecting tube is low in manufacturing cost, long in working life, high in heat efficiency and capable of greatly promoting the industrialization and large-scale production of solar heat collecting tubes and promoting environment protection.

The invention relates to the technical field of heat dissipation of colony houses for livestock, in particular to a fan used for animal husbandry and a production method of the fan. The fan comprises a fan body and a support, a power source is connected with an electric control box and a motor, the support consists of a rotating system, a power system and an electric control system, a reducer with an oblique gear and a turbine is arranged on a motor shaft of the rotating system, a transmission shaft and the electric control box are disposed on the reducer, a plurality of rotating shafts are disposed on the transmission shaft, couplers are equidistantly disposed on the transmission shaft on the left sides and the right sides of the rotating shafts, a bearing is arranged in an inner cavity of each rotating shaft, the bearings are connected with plane bearings, a gear is disposed outside each rotating shaft, the gears drive the turbine, a fan angle adjusting support is disposed on the lower portions of the plane bearings of the rotating shafts and provided with a fan shell, the fan shell is a square hollow frame structure made of plastics in a rotational moulding forming manner, and a circular inner cavity which rotates along blades of the fan is arranged in the middle of the square frame structure. The fan is durable, reduces cost and is safe and reliable.

The invention discloses a self-floating collision prevention device based on composite materials; and the device coasts a stand column of a marine structure, and floats up and down along with a water level. The device is characterized by forming a ring body by multiple connected collision prevention units; the cross sections of the collision prevention units are fan rings, and the longitudinal sections are ellipses; and the collision prevention units are formed by glass fiber resins, corrugated sandwich steel plates, polyurethane elastomers, inner-layer steel plates and polyurethane foam multilayer composite materials from edge to internal in sequence, wherein an internal space formed by the inner-layer steel plates is filled with polyurethane foams. The self-floating collision prevention device is stable in water property, resistant in corrosion, excellent in impact resistance, and green and environment-friendly.

The invention discloses a guide ceramic valve rod for a filling valve, and relates to the technical field of filling valves. The ceramic valve rod comprises a stainless steel valve element and a ceramic coating arranged on the outer side of the stainless steel valve element, wherein the ceramic valve rod and a valve sleeve are sealed in a matched guide mode. According to the guide ceramic valve rod, the ceramic coating is arranged on the outer side of the stainless steel valve element, so that the stainless steel valve element has high temperature resistance and corrosion resistance; and the ceramic valve rod and the valve sleeve are sealed in the matched guide mode, and a guide belt and a sealing ring are cancelled, so that the problems that the guide between the valve rod and the valve sleeve is not flexible and a spring cannot reset due to the aging of the sealing ring are solved.

The invention discloses a stirring device, a reaction container and an analytical instrument. The stirring device comprises a supporting pipe, a transmission shaft, a first oil seal, a second oil seal, a first bearing and a second bearing; the transmission shaft penetrates through the supporting pipe, and the two ends of the transmission shaft extend out of the supporting pipe by a certain length; the first bearing and the first oil seal are mounted at one end in the supporting pipe, and the second bearing and the second oil seal are mounted at the other end; and the first bearing and the second bearing support the transmission shaft, and the first oil seal and the second oil seal seal the transmission shaft. The stirring device can be installed on the reaction container in various modes, leakage points are transferred, all structural accessories of the stirring device are hidden in the supporting pipe, the supporting pipe is connected with an instrument container in a non-movable rigid connection mode, the installation mode is firm and reliable, movement is avoided, and therefore, leakage caused by aging of accessories after long-time work does not exist.

The invention provides a setting method of a Hall linear stroke indicator. The Hall linear stroke indicator comprises a Hall element and a conditioning circuit connected with the Hall element; the conditioning circuit comprises a temperature compensation constant current source circuit which is input into a magnetoelectricity conversion circuit, namely the Hall element, the Hall element output is output via a signal adjustment and amplification circuit; the Hall element converts a magnetic signal into an electric signal, and the electric signal is output after being adjusted and amplified by virtue of an operational amplifier; and magnetic steel is arranged and enters a working region of the Hall linear stroke indicator, and the Hall element senses a magnetic field and outputs a voltage signal. When the magnetic steel displaces along the axis of the Hall linear stroke indicator, voltage output by the Hall element is in linear variation along with a gradually strengthened magnetic field strength sensed by the Hall element, and the stroke of the magnetic steel can be judged through conversion.

The invention discloses a cultivation method of wasp cordyceps sphecocephala, and relates to the technical field of wasp breeding. The cultivation method comprises the following steps: pouring cement and reinforcing steel bars into a medium beehive for later use; in autumn every year, scalding worker wasps to death with boiled water for standby application; paving a foam box with clean fine yellow mud, compacting the yellow mud, inserting the yellow mud into a plurality of small holes by using a small stick, putting the worker wasps into the small holes with the heads facing upwards, then covering the surface with the clean fine yellow mud and then putting the foam box into the beehive; taking out the foam box from the beehive and putting the foam box in an outdoor environment to absorb rainwater and sunlight after each worker wasp begins to grow cordyceps sphecocephala in the next year; and after autumn, cleaning and drying the worker hasps and the cordyceps sphecocephala growing on the worker hasps in the sun for later use. Compared with the prior art, the cordyceps sphecocephala cultivated in the constant-temperature and constant-humidity environment of the bee box has the advantages of being uniform in growth vigor, high in medicinal component and the like.

A rotary water distributor of a microbial filter bed comprises a water inlet pipe and a rotary sleeve; the upper end of the water inlet pipe is closed, and at least one rotational flow water outlet hole is formed in the pipe wall of the upper portion of the water inlet pipe around the central axis in an annular array mode; an annular storage tank is arranged on the lower portion of the water inlet pipe, mercury is contained in the annular storage tank, and the lower end of the rotating sleeve is inserted into the annular storage tank and located below the liquid level of the mercury; the upper end of the rotating sleeve is closed, and at least three cavity separating plates are fixedly arranged on the inner sleeve wall of the rotating sleeve around the central axis in an annular array; and at least two water distribution pipes are connected and arranged on the outer sleeve wall of the rotating sleeve around the central axis in an annular array. Tangential water columns are sprayed outwards through the rotational flow water outlet holes in the water inlet pipe, the water columns impact on the cavity partition plate, so the rotary sleeve can be pushed to rotate, the water distribution pipe is driven to rotate, and a circular water distribution range is formed.

The invention discloses a method for realizing waterproof, anti-disassembly and anti-replacement of a safety case. The method realizes the functions of waterproof, anti-disassembly and anti-replacement (internal PCB) performances. The case is designed into a case base and a case cover plate, and the base and the cover plate are both realized in an injection molding manner (for example, the injection molding material is nylon 66 plus 30% of glass fiber). Four corners of the base and the cover plate are respectively provided with a through hole (for example, the cover plate and the base are fixed by adopting an M8 316 stainless steel column, and the base and the cover plate are fixed by spin riveting), the upper parts of four edges of the base are provided with glue filling grooves, and the cover plate is provided with clamping grooves at positions corresponding to the glue filling grooves; the method is suitable for environments with strict requirements on safety, and in the environments, the power consumption of equipment is not high, but the reliability requirement is very high. By adopting the customized safe case, the problems of water prevention, disassembly prevention and replacement prevention (internal PCB) can be well solved.

The invention discloses an anti-pollution CTD (conductivity, temperature and depth) conductivity probe; two circular magnet ring coils are coaxially arranged, an anti-corrosion voltage withstand insulating shell is arranged outside, and the axial center is provided with a sea water passage; the two magnet ring coils include an exciting magnet ring and an output magnet ring; a core of each of the exciting magnet ring and the output magnet ring is a nanocrystal core; a shaft is a flow guide tube having good resistance to sea water corrosion and stable physiochemical properties. The anti-pollution CTD conductivity probe employing inductive conductivity measurement is solid and reliable and is resistant to corrosion, free of polarization and long in service life.

The invention discloses an anti-corrosion anti-dry-grinding shaft seal. The shaft seal is mounted on a centrifugal pump main shaft. The shaft seal comprises a sealing box assembly and a mechanical seal. The mechanical seal comprises a static ring and a moving ring. The anti-corrosion anti-dry-grinding shaft seal is characterized in that the sealing box assembly is fixedly connected with a pump shell, the moving ring is fixed to a main shaft, and the moving ring is located in a pump cavity and is in contact with conveying material liquid; the sealing box assembly comprises a sealing box, a sealing box pressing rear cover and a static ring pushing elastic ring arranged in the sealing box, wherein the sealing box pressing rear cover and the sealing box are arranged in a split or integrally manner; the two ends of the static ring pushing elastic ring are compressed between the sealing box pressing rear cover and the static ring, the static ring pushing elastic ring is in an elastic pressing state, a static ring friction pair is in contact sealing with a moving ring friction pair, and a rigid partition is fixedly connected to the sealing end surface of the sealing box and the pump shell; and the peripheral surface of an inner hole of the rigid partition is in contact sealing with the outer peripheral surface of the static ring, and a liquid storage cavity is defined by the outer peripheral surface of the static ring pushing elastic ring, the sealing box pressing rear cover, the rigid partition and the static ring.