45results about How to "Reduce the probability of rust" patented technology

The invention discloses heat-resisting and oxidation-resisting stainless iron. The heat-resisting and oxidation-resisting stainless iron includes, by weight, 0.06%-0.08% of C, 0.3%-0.6% of Mn, 18%-22% of Cr, 0.5%-1% of Ti, 0.5%-1% of Mo, 0.3%-0.5% of N, 0.2%-0.4% of Zr, less than 0.03% of P, less than 0.03% of S, and the balance impurities and iron. The heat-resisting and oxidation-resisting stainless iron has the advantages of resisting heat and oxidation.

The invention discloses a lower frame structure of a solar support, which includes a support frame, the support frame includes a bottom plate and side plates installed on both sides of the bottom plate, grooves are arranged on the outer wall of the adjacent side of the bottom plate and the two side plates , the grooves on the bottom plate communicate with the grooves on the two side plates respectively, the bottom plate is provided with a drain pipe, and the bottom plate is provided with a through hole above the drain pipe, and the through hole communicates with the groove on the bottom plate, so A buffer plate is provided on the bottom inner wall of the groove on the bottom plate, and the buffer plate includes two parallel sealing plates, the sealing plates are of C-shaped structure, and the two sealing plates are connected by spring posts, and the spring posts and the two sealing plates There are gaps in between. The invention can timely remove the water in the support frame, reduce the probability of corrosion of the support frame, reduce the impact force of the fixed plate on the support frame, prolong the service life of the support frame, and the distance between the fixed splint and the movable splint can be adjusted , suitable for clamping solar panels of various thicknesses.

The invention discloses an automatic metal separator. The automatic metal separator comprises a metal detecting ring and a metal separator body; a feed port is formed above the metal separator body; adischarge port is formed under the metal separator body; a separation cavity and a feeding cavity are formed in the metal separator body in sequence from top to bottom; a mechanical arm is fixed on the top wall of the separation cavity through bolts and threads; a conveying belt is sleeved in the feeding cavity through a rotating shaft; and a ventilation box is horizontally inserted in middle ofthe conveying belt. Under the condition of not stopping the conveying belt, the position of metal is detected through the metal detecting ring, and such harmful metal impurities as manganese steel lining plates, hammerheads and alloy steel mixed in materials are sorted through the mechanical arm, so that the recycling of the metal is improved, and a roller press and a vertical mill can be protected to reduce the maintenance times so as to save a lot of maintenance costs for companies.

This application relates to a balcony railing embedded part and its pre-embedded construction process. The balcony railing embedded part includes a base block, a connecting rod set on the base block, a movable block sleeved on the connecting rod, and a movable block installed on the upper end of the connecting rod. The upper surface of the base block is provided with an upper internal thread and a lower internal thread, the lower end of the connecting rod is threadedly connected with the lower internal thread, and a sealing assembly is installed on the movable block and the connecting rod; the sealing assembly includes a fixed sleeve on the connecting rod The sealing ring on the top, the annular rubber sheet fixed to the upper surface of the base block and the threaded column fixed to the bottom surface of the base block, the sealing ring is made of water-swellable material. In this application, after the worker tightens the threaded column through the movable block, the movable block cooperates with the base block and fully presses against the annular rubber sheet, so that the gap between the movable block and the base block is fully filled by the annular rubber sheet, reducing the water leakage caused by water. The gap between the movable block and the base block infiltrates, and makes the thread at the lower end of the connecting rod corrode, prolonging the service life of the connecting rod.

The invention discloses a gypsum board line fire protection automatic inspection control system and method. The start time point and pause time point of the negative pressure simulation generator are set, and the fire control controller collects the output of the pressure sensor in real time during the working period of the negative pressure simulation generator. signal; the fire controller regulates the test operation of the water pump by the inspection module according to the output signal of the pressure sensor during the working period of the negative pressure simulation generator, and the fire controller gives an abnormal alarm according to the test operation of the water pump; The output signal outside the working period of the simulation generator regulates and controls the inspection module to operate the water outlet and fire extinguishing operation of the water pump; the fire control controller manually stops the water pump to drive the water outlet mode, and then the regulation inspection module returns to the normal state; the present invention combines the regular inspection work with the water pump drive The water outlet work is integrated, and the regular inspection work does not affect the water pump driving water outlet work.

The invention relates to a finned tube heat exchanger. The finned tube heat exchanger is arranged in refueling water tank of a passive waste heat removal system of a nuclear power station and comprises a C-shaped vertical pipe bundle, a support and anti-vibration strips for fixing a heat exchange pipe bundle, wherein the C-shaped vertical pipe bundle is composed of a plurality of C-shaped heat exchange pipes, and a plurality of anti-vibration strip arrangement regions are arranged in the C-shaped vertical pipe bundle. Cylindrical anti-vibration strips are arranged in the anti-vibration strip arrangement regions. The manufacturing cost and difficulty of the heat exchanger in the passive waste heat removal system of the pressurized water reactor nuclear power station can be reduced, the stress concentration situation of the heat exchanger heat transfer pipes during operation is effectively reduced, the heat transfer pipe bundle constraint and heat transfer pipe corrosion probabilities are reduced, and accordingly the risk that the heat transfer pipe bundle deforms and is invalid is reduced.

The invention discloses a protective agent for a bridge with a steel structure, a preparation method thereof and application thereof. The protective agent comprises the following components: an organic / inorganic composite fluorosilicone styrene polymer, lithium silicate, sodium molybdate, benzotriazole, nanometer titanium dioxide, sodium gluconate, ethanolamine, absolute ethanol and distilled water. Corrosion inhibiting ingredients contained in the protective agent can be attached to the metal surface of the bridge with the steel structure, so that a compact protective film is formed on the metal surface due to a passivating reaction for corrosion inhibition and corrosion prevention; a low-surface energy fluorosilicone styrene polymer component contained in the protective agent can be cured to form a film for playing the hydrophobic and protective roles; a nanometer component can improve the performance of ultraviolet aging resistance of a film layer, improve the performance of the polymer and provide the excellent self-cleaning performance and the like for the cured film; and hydroxyl generated by hydrolyzing siloxane groups can perform a condensation reaction with hydroxyl on the surface of the bridge with the steel structure to generate a chemical bond so as to improve adhesive power between the film layer and a matrix material and improve interface bonding. The protective agent is high in stability, non-toxic, environment-friendly, multiple in functions and easy to construct, can be widely used for the protection of the structural engineering of various bridges with the steel structures, and is favorable for improving the service life of the bridge with the steel structure.

The invention discloses a hydraulic plate valve which comprises a valve body; a protective sleeve is in threaded connection to the top of the valve body in a penetrating manner; the top end of the protective sleeve extends to the outer part of the valve body; a rotary table is connected to the top end of the protective sleeve; a valve rod is rotationally connected to the bottom end of the rotary table, penetrates through the protective sleeve and extends into the valve body; a valve plate is connected to the valve rod; two symmetric sliding blocks are connected to the bottom end of the circumferential side wall of the protective sleeve; two symmetric chutes are arranged on the inner wall of the valve body and are connected with the sliding blocks in a sliding manner respectively; symmetricconnection rings are connected to the two sides of the valve body in the penetrating manner respectively; and one end, far away from the valve body, of each connection ring is provided with an opening. The hydraulic plate valve has a novel structure; the device can perform protection on the valve rod on the valve body, avoids from being directly contacted with water in air and rainwater, lowers the corrosion probability, prolongs the service life of the valve body; and in addition, the valve body is conveniently connected with a water pipe and can avoid the water pipe falling phenomenon fromoccurring at the same time, and the hydraulic plate valve is suitable for popularization.

The invention belongs to the technical field of power saving modification of power plant air compressors, and specifically relates to a power saving modification method for a power plant oil-injected screw type air compressor station. To solve the problem that an existing power plant oil-injected screw type air compressor adopts gas products to conduct adsorbent regeneration, a combined type drying method adopting a post-refrigerant dryer and a no-heating or gentle-heating structure is modified to a gas product recycling and zero-release drying technology. The power saving modification method comprises the following steps that air consumption and a dew point of the before-modification air compressor station are measured firstly, and consumed energy charge of the before-modification air compressor station is calculated; then after a modification scheme is established, consumed energy charge of the air compressor station is calculated; and finally, after an energy saving analysis is conducted, air-consumption and an air supply dew point of a after-modification air compressor station are measured. According to the power saving modification method for the power plant oil-injected screw type air compressor station, gas product consumption of the air compressor can be reduced, electricity consumption in operation of the air compressor can be reduced, high-quality gas is provided for instrumentation valves, an ash handling system and miscellaneous gas systems, power plant shutdown production accidents caused by unstable running of the air compressor are reduced, the safety of the power plant and economic operation are ensured.

The invention discloses a steering gear of a cable member. The steering gear comprises an ear plate, a bent cylinder integrated with the ear plate, a connecting rod ear plate buckled at one end of the ear plate, a hot-cast infill and a branch pipe group that are fixed in the bent cylinder, stranded wires penetrating the branch pipe group, a damping cushion block fixed at the outlet of the bent cylinder, waterproof covers fastened at the two ends of the bent cylinder, stayed cable Haver pipe sleeve heads buckled on the waterproof covers, stayed cable Haver pipes connected with the stayed cable Haver pipe sleeve heads, cable bands arranged on the inner sides of the waterproof covers and used for fixing the stranded wires, fastening bolts penetrating the waterproof covers and being in threaded connection with the bent cylinder, and water stop rings fixed between the outer side of the circumference at the outlet of the bent cylinder and the waterproof covers. The steering gear has the characteristics of being simple in structure, convenient to replace, excellent in force bearing performance, high in structural reliability, strength and elastic modulus and good in ductility and durability.

The invention discloses a lock protection device. The protection device comprises a fixing plate and a protection cover, wherein the protection cover is in rotary connection with the fixing plate through a rotary shaft, the top of the protection cover is a circular-arc face, and sector-shaped faces are arranged on two sides of the protection cover.