32results about How to "Guaranteed anti-corrosion" patented technology

The invention discloses a backfilling process for a large ultra-deep circulating water pipe, comprising the steps of: (1) constructing a sand bedding layer, wherein the sand bedding layer is 1000-1500 mm in thickness and is made of moderate-coarse sand and coarse sand; (2) covering the pipe by using concrete, wherein the concrete layer is 4000-5500 mm in thickness; and putting a circulating waterpipe on the sand bedding layer; (3) backfilling: paving a stone chip layer on the concrete layer, wherein each backfilling layer is less than or equal to 500 mm in thickness, the compactedness is more than 90%, and the total thickness of the stone chip layer is 3000-4500 mm; paving a macadam layer on the stone chip layer, wherein the maximum grain size of the macadam is not more than 100 mm, eachbackfilling layer is less than or equal to 500 mm in thickness, the compactedness is more than 85%, and the macadam layer is 4000-6000 mm in thickness. By use of the backfilling process, the anticorrosion performance of the large ultra-deep circulating water pipe can be improved so that the pipe can be effectively prevented from corrosion for the service life of 60 years.

The invention relates to a 10 kV stacked heat storage boiler which comprises a vortex heating furnace, a heat accumulating type heat exchanger, a preheating water tank and a separation water tank frombottom to top. The vortex heating furnace, the heat accumulating type heat exchanger, the preheating water tank and the separation water tank realize heat conduction through heating pipes which are fixedly connected with each other; firstly, the vortex heating furnace heats the heating pipes, then heat storage on the heat accumulating type heat exchanger is carried out by the heating pipes, the preheating water tank is mainly used for storing water, and the separation water tank is mainly used for separating high-temperature water and high-temperature steam; high-temperature steam can performhigh-power heat storage on the heat accumulating type heat exchanger; the heat accumulating type heat exchanger can be used for supplying heat during heating; the heat conduction coil pipe structureof the traditional vortex electric boiler is improved into a vertical pipe structure, the heating of the heating pipes in the middle of the axis is realized by utilizing temperature difference and gravity driving, and the heating is more direct; the separation water tank at the top is used for preventing the heating pipes from being overheated and additionally generating high-temperature steam; and compared with the circulating heat pipe structure, the 10 kV stacked heat storage boiler has higher heating efficiency.

The invention discloses a steel frame reinforced type petroleum pipe. A layer of glass fiber reinforced plastic protective shell is arranged on the outer surface of an outer pipe body, a steel ring is arranged in a cavity positioned between the outer pipe body and an inner pipe body, the distance between the outer surface of the steel ring and the inner wall surface of the outer pipe body is equal to that between the inner surface of the steel ring and the outer wall surface of the inner pipe body, and a plurality of trapezoidal steel frames are arranged in a cavity between the steel ring and the outer pipe body as well as a cavity between the steel ring and the inner pipe body uniformly. The steel frame reinforced type petroleum pipe has the advantages that an anticorrosive coating is arranged on the inner surface of the inner pipe body, a glass fiber reinforced plastic protective shell structure is arranged on the outer surface of the outer pipe body, and accordingly heat preservation and insulation performances and corrosion resistance of the inner pipe body and the outer pipe body are guaranteed; the double-layer steel frames are additionally arranged between the outer surface of the inner pipe body and the inner surface of the outer pipe body and combined with the steel ring, so that service lives of the inner and outer pipe bodies are prolonged beneficially, and maintenance cost is lowered greatly.

The invention relates to a corrosion inhibitor film coating pipe cleaning device for a high-sulfur-containing moisture gathering and transportation pipeline. The pipe cleaning device mainly comprises a corrosion inhibitor storage and spray coating cavity, a chemical reagent storage and release cavity and circular corrosion inhibitor film coating brushes. The multiple functions of corrosion inhibitor atomization first-stage spray coating, circular brush rotating second-stage film coating, removal of solid impurities at the front end of the pipe cleaning device and the like are integrated, all-dimensional multi-angle corrosion inhibitor film coating of the inner wall of the pipe is achieved, and the film coating quality is improved. The corrosion inhibitor storage and spray coating cavity is designed, the high-pressure natural gas drives a piston to move, corrosion inhibitor in the cavity is extruded, is sprayed out of small holes in a mist mode and then adheres to the inner wall of the pipe, and therefore the first-stage corrosion inhibitor film coating is achieved. The circular corrosion inhibitor film coating brushes are designed, the high-pressure natural gas drives the circular brushes to rotate, and therefore the corrosion inhibitor which is deposited in the pipe can be uniformly dispersed on the inner wall of the pipeline, and the corrosion inhibitor second-stage film coating is achieved. The chemical reagent storage and release cavity is designed, the solid impurities at the front end of the pipe cleaning device are dissolved by a chemical reagent, and therefore the situation that the pipe cleaning ball collection operation is safe and stable is guaranteed.

The invention discloses a construction method for multiple anti-corrosion protection of a steel cylinder revetment structure in the sea. The auxiliary grid is connected as a whole at sea; fill each steel cylinder and steel auxiliary grid with medium-coarse sand to a certain distance from the steel cylinder and the upper edge of the steel auxiliary grid; pour capping concrete above the medium-coarse sand, Pouring sulfur mortar; pouring concrete on the coating of the steel cylinder and the outer wall of the steel auxiliary cell on the sea side above the design low water level and below the roof elevation; welding sacrificial anode blocks on the steel cylinder and the outer wall of the steel auxiliary cell on the sea side; The reference electrode, welding cathode welding spot and zero welding spot are respectively installed on the upper part of the steel cylinder on each land side and the outer wall of the steel auxiliary grid, and the lead wires of the reference electrode, zero welding spot and cathode welding spot are connected to the anode Well built-in pre-packaged anode body connections. Adopting the method can effectively play the long-term anticorrosion effect of the steel structure in the sea.

The invention discloses a liquid metal battery anti-corrosion sealing structure and an assembly method thereof, comprising a liquid metal battery sealing electrode, a cover plate with a liquid sealing wall and a liquid sealing bowl holder; the liquid metal battery sealing electrode includes an electrode core , the electrode core is provided with an upper transition piece and a lower transition piece, and an insulating piece is arranged between the upper transition piece and the lower transition piece; Fluid connection; the cover plate with liquid seal wall is set on the upper transition piece, and the liquid seal wall extends downwards in the upper groove of the liquid seal bowl holder; the liquid seal bowl holder and the cover plate with liquid seal wall are filled with heat-cured Liquid salt. This structure solves the technical problems of anti-corrosion and sealing of the liquid metal battery working at room temperature and high temperature for a long time, optimizes the space utilization of the battery, and reduces the cost of battery preparation.

The invention discloses a production method of a bright stainless steel pot. The production method comprises the steps that firstly, material selecting and cogging are conducted, and a stainless steel billet material with the thickness being 0.5-1.0 mm is obtained; secondly, stretching oil is smeared on the stainless steel billet material, the stainless steel billet material is covered with a PE protective film and then placed into a first stretching mould to be stabilized and positioned, and a first-time material pressing machine is started to conduct first-time stretching; thirdly, a stainless steel semi-finished product is taken, the PE protective film on the surface of the stainless steel semi-finished product is removed, the stretching oil on the surface is wiped out, and the stainless steel semi-finished product is sent into a hearth of a bright annealing furnace with the temperature being 1000 DEG C-1150 DEG C, and the heat preservation time is 18-25 minutes; and fourthly, the stainless steel semi-finished product is coated with stretching oil and placed in a second stretching mould, frame erecting and positioning are conducted, a layer of tensile film is sealed, and a second-time material pressing machine is started to conduct second-time stretching. According to the production method of the bright stainless steel pot, the tensile depth of the stainless steel pot is deepened, and the bright effect and the anticorrosion property of the surface of the stainless steel pot are effectively guaranteed.

The invention relates to a yawing mechanism for a wind driven generator, a yawing control system adopting the yawing mechanism and a control method of the yawing mechanism, wherein the yawing mechanism of the wind driven generator comprises a pedestal and a four-point-contact ball bearing, wherein the pedestal is connected with a generator assembly, and three bulged lateral plates are arranged onthe outer lateral wall of the pedestal; a pretightening-pressure regulating device is fixed below each lateral plate; the other end of a yawing motor is fixed to a speed reducer, and the output shaftof the speed reducer is connected with a friction wheel; and the bottom end surface of the pedestal is fixed to the inner ring of the four-point-contact ball bearing, the outer ring of the four-point-contact ball bearing is connected with the top of a tower frame, and the friction wheel contacts the outer ring of the four-point-contact ball bearing. Compared with the prior art, relative to the common gear driving form of the yawing mechanism, because a friction-wheel driving form is adopted, the invention has the advantages of simple structural shape and convenient processing and has the characteristics of steady working process and small impact.

The invention discloses a novel oil delivery insulating pipe comprising an outer pipe and an inner pipe. The inner pipe is disposed in the center of an inner cavity of the outer pipe, while an anticorrosion layer is arranged on the inner surface of the inner pipe and a glass wool insulating layer structure is arranged on the outer surface of the inner pipe. Four cambered outer projections are evenly arranged on the outer wall of the outer pipe, and the outer periphery of each outer protrusion is wrapped with an aluminum foil reflecting layer. The inner pipe and the outer pipe are fixedly connected through stainless steel fastening tapes, and the outer end of each stainless steel fastening tape is fixed on the inner wall of the outer pipe. The novel oil delivery insulating pipe has the advantages that insulating performance and corrosion resistance of the inner pipe can be ensured; the aluminum foil reflecting layer in a projection form is arranged on the outer side of the outer pipe, the service life of the outer pipe can be prolonged, and maintenance cost is reduced greatly.

The invention discloses a fabricated secondary lining structure of a bored tunnel and a construction method of the fabricated secondary lining structure. The fabricated secondary lining structure of the bored tunnel comprises a plurality of circles of splicing structures sequentially arranged in the extending direction of the tunnel. Each circle of splicing structure comprises a plurality of splicing blocks. The adjacent splicing blocks in the same circle of splicing structure are connected through a plurality of connecting devices arranged on the edges of the splicing blocks in the circumferential direction. The adjacent splicing blocks in the different circles of splicing structures are connected through connecting devices arranged on the edges of the splicing blocks in the extending direction of the tunnel. According to the fabricated secondary lining structure of the bored tunnel and the construction method of the fabricated secondary lining structure, working conditions can be improved, labor can be saved, and a large number of temporary materials can be saved. Standardization, mechanization and industrialization of the secondary structure of the bored tunnel are achieved, and the construction efficiency and industrialization level of the secondary lining structure are improved.

The invention relates to the technical field of fresh corn processing, and particularly discloses corn fresh-keeping equipment which comprises a material distributing hopper, a material distributing plate, a material guiding plate, a conveying belt, a baffle assembly, a conveying roller way, a first fan, a second fan, a beard stripping device with a first beard stripping disc and a second beard stripping disc, a spraying device and an ultraviolet device. The invention further discloses a corn fresh-keeping method implemented by using the corn fresh-keeping device. By arranging the first fan, impurities on the periphery of corn can be blown away, corn stigma on the surface of the corn can be further stripped and the impurities can be further brushed away through the stigma stripping device, and the production efficiency is improved; ultraviolet sterilization can be carried out on the outer surface of the corn through the ultraviolet device, so that the sterile packaging condition is ensured; an antioxidant can be uniformly sprayed on the outer surface of the corn through the spraying device, and the antioxidant can be moderately blow-dried through the second fan, so that uniform corrosion prevention can be realized, and the dosage of the antioxidant can be ensured not to exceed the standard.