37results about How to "Improve water pressure resistance" patented technology

The invention relates to a floor anchoring constraint tunnel lining structure, so as to effectively reduce vertical deformation of a base and enhance hydraulic pressure resistance and floating resistance of the lining structure. The floor anchoring constraint tunnel lining structure comprises a primary arch wall bracing structure, a secondary lining structure, a waterproof and drainage system and a central drainage channel, and the waterproof and drainage system is arranged between the primary arch wall bracing structure and the secondary lining structure. The secondary lining structure comprises a secondary arch wall lining and a floor, the floor is located on a base leveling course, and two ends of the floor are solidified with two ends of the secondary arch wall lining. Vertical constraint members are arranged in a base rock and soil layer under the floor transversely in a spaced manner as well as in the route extension direction in a spaced manner, the lower end of each vertical constraint member extends into a stable rock and soil layer, and the upper end of each vertical constrain member penetrates the base leveling course to be fixedly connected with the floor.

The invention discloses special high-temperature resistant waterproof air and moisture permeable resin for coating printing and a preparation method thereof. The resin is prepared by the following steps of: obtaining a prepolymer through a reaction between polyether polyol and diisocyanate; and modifying the prepolymer by use of polyhedral oligomeric silsesquioxane to obtain the resin, wherein the average molecular weight of the resin is 50000-150000g/mol, the viscosity is 60000-100000cps/25 DEG C, and the solid content of the resin is 30-55%. In the polyurethane resin prepared by the method disclosed by the invention, the moisture permeability can reach 7500g/m<2>.24H, and the water pressure resistance is greater than 10000mmH2O; moreover, the polyurethane resin has the processing characteristic of tolerating a temperature of 200-230 DEG C for continuous 30S during coating printing; and the resin has highly-permeable coating and soft and smooth handfeel, and is washable and very suitable for the direct coating and coating printing technology of fabric coating processing.

The invention provides a separated maintainable tunnel lining structure to effectively avoid the phenomenon that a side wall structure is fractured and damaged due to the fact that underground water soars in rain-flood seasons but the discharge capacity is insufficient, improve the hydraulic pressure and floating resistant capacity of the lining structure and reduce the damage risks of underground water in rain-flood seasons to the lining structure, especially a tunnel bottom structure. The separated maintainable tunnel lining structure comprises an arch wall primary supporting structure, a water prevention and discharge system and a lining structure body which are arranged from outside to inside. The lining structure body comprises a secondary arch lining, a side wall frame supporting structure, a filling wall and a tunnel bottom pile-plate structure. The tunnel bottom pile-plate structure comprises a base plate laid on a base confining bed and anchorage piles longitudinally and transversely arranged along a tunnel at intervals. The upper ends of the anchorage piles are fixedly connected with the base plate. The two circumferential ends of the water prevention and discharge system lead to longitudinal drainage ditches formed in the two transverse sides of the base plate.

A waterproof container for accommodating a portable electronic device mainly includes a resilient frame, a first housing, a second housing and a plurality of screw members. The resilient frame, mounted around a circumference of the portable electronic device, has a surface to be combined with the first housing and a bottom surface to be combined with the second housing so that a space for accommodating the portable electronic device is formed. Using a frame structure constituted by an integrally formed waterproof resilient material can effectively work with the use of the anti-collision and circumferential function keys of the portable electronic device to enhance the convenience in use and further to possess the high anti-water-pressure capability, integrate and simplify the manufacturing processes and decrease the cost.

The invention discloses an automatic cleaning system for a video capture window of an underwater monitoring device. The automatic cleaning system comprises a disc-shaped base, a video capture module and a transparent window cover. The outer surface of the window cover is a rotation curved surface which is formed in the manner that a busbar with one end on the center axis rotates around the center axis by a circle. The center axis of the window cover is coaxial with the center axis of the base. A cleaning scraper is arranged on the outer wall of the window cover in a striding manner. The inner edge of the cleaning scraper is attached to the outer surface of the window cover in a matched manner. The cleaning scraper is hinged to the window cover and can rotate around a hinge shaft. The part, between the cleaning scraper and the window cover, of the hinge shaft is coaxial with the center axis of the window cover. The cleaning scraper is driven by external force to rotate around the hinge shaft.

The invention provides an environmental-friendly shield tail seal grease and a preparation method thereof. The environmental-friendly shield tail seal grease is prepared from combining the following raw materials in parts by weight: 20 to 35 parts of base oil composition, 6 to 15 parts of viscosity index modifier, 30 to 55 parts of waterproof sealing material, 2 to 5 parts of lubricating agent, and 5 to 25 parts of complex fiber, wherein the base oil composition is prepared from mixing isooctyl alcohol modified colleseed oil and soybean oil or biodiesel according to the mass ratio being 1 to 4:1; the complex fiber is prepared from mixing a mineral fiber and a plant fiber according to the mass ratio being 1 to 4.5:1. The base oil composition is prepared from mixing the isooctyl alcohol modified colleseed oil and the soybean oil or the biodiesel, has excellent abrasion resistance and oxidation resistance, and no harm on soil and underground water, can be degraded within a short term in the underground environment, and solves the problem that a shield tail seal grease has severe pollution on the underground environment during the shield process on the basis of ensuring a better sealing performance.

The invention relates to a partitioned waterproof system for a water-enriching section of a tunnel, which belongs to the waterproof field of tunnels and aims to improve the waterproof performance of the water-enriching section and avoid the seepage of the water-enriching section. The system comprises a water stopping rubber mat which is circumferentially sealed along the tunnel and is arranged ata settlement joint, and the water stopping rubber mat is located between an initial support and a waterproof layer; one side of the water stopping rubber mat along the middle line is longitudinally overlapped to a conventional lining section along the tunnel while the other side of the water stopping rubber mat is longitudinally overlapped to the water enriching section along the tunnel. Accordingto the system provided by the invention, a seepage gap between the waterproof layer and the initial support is partitioned at the settlement joint by arranging the water stopping rubber mat to blockwater seeping into the seepage gap between the waterproof layer and the initial support in the water-enriching section, so that water seeping into the seepage gap is prevented from flowing into the conventional lining section along the seepage gap.

The invention provides a connecting structure and a connecting method for an expansion joint water-stop belt of a hydraulic concrete member. The connecting structure comprises a protection layer and a sealing filling layer, wherein an expansion joint at the broken part of the water-stop belt is filled with the sealing filling layer; the protection layer coats the sealing filling layer and the outer side of the end of the broken part of the water-stop belt, and is combined with the end. A seam on the broken part is preferably enclosed by the sealing filling layer, so that the protection layer can be supported as required. The protection layer can be molded directly by coating a flexible film material on site in order to be tightly combined with the end of the water-stop belt. An activating agent and a bonding agent are preferably coated between the protection layer and the water-stop belt. The connection problem at the broken part of the expansion joint water-stop belt of the hydraulic concrete member can be solved. Compared with the process of replacing the water-stop belt by chiseling in the conventional way, the connecting method is simple and feasible; moreover, the water-stop belt has perfect performance after being connected.

The invention discloses a waterproof shell of a waterproof power supply, the waterproof power supply and a manufacturing method of the waterproof power supply. The waterproof shell comprises a shell,a cover, a sealing plate, two connection terminals and two output terminals, wherein the cover is matched onto an opening end of the shell, the sealing plate is arranged in the opening end of the shell, the two connection terminals are arranged on an inner surface of the cover and are isolated with each other, the two output terminals are arranged on an outer surface of the cover and are isolatedwith each other, the two output terminals are respectively connected with the two connection terminals, two output holes are formed in the sealing plate, a protruding first isolation wall and a firstprotruding wall are arranged on an inner surface of the cover, a protruding second isolation wall and a second protruding wall are arranged on the sealing plate, the second isolation wall is matched with the first isolation wall, the second protruding wall is matched with the first protruding wall, and the two connection terminals are insulated and isolated. By arranging the sealing plate in the waterproof shell, secondary sealing of a battery pack is achieved; and by arranging the isolation walls and the protruding walls on the sealing plate and the cover, isolation between a positive terminal and a negative terminal of the waterproof power supply is achieved.

The invention relates to a faucet, in particular to the faucet filled with an anti-impact high-dense elastomer material and a preparation method of the faucet. The faucet comprises an acrylonitrile butadiene styrene (ABS) plastic shell and mating parts, wherein the mating parts comprise a valve core, a handle, a water outlet net, a seal ring, a fastening screw and the like. The method comprises the following steps of: combining and connecting water channels of the faucet according to a waterway requirement of the faucet; putting the water channels into a mould of a shell of the faucet and fixing the water channels; fusing a high-dense elastomer which is mixed with an inorganic filling material by an extruder, an injection moulding machine, a kneading machine and an open mill, and filling the high-dense elastomer into the mould of the shell of the faucet; cooling the high-dense elastomer in the mould until the high-dense elastomer is formed, taking the high-dense elastomer out of the mould, and carrying out injection moulding on the high-dense elastomer to form a plastic shell of the faucet; and carrying out surface treatment on the shell, installing the filled faucet into the plastic shell of the faucet, and assembling the prepared faucet mating parts which are produced by the conventional process and comprise the valve core, the handle, the water outlet net, the seal ring, the fastening screw and the like into the faucet filled with the anti-impact high-dense elastomer material according to the conventional assembling mode.

The invention discloses a sound production device which comprises a vibration system and a magnetic circuit system. The vibration system comprises a vibrating diaphragm and a voice coil which are connected together. The magnetic circuit system comprises a central magnet and side magnets arranged on the outer side of the central magnet. A central magnetic conductive plate is arranged on the centralmagnet, and side magnetic conductive plates are correspondingly arranged on the side magnets, wherein the vibrating diaphragm comprises a middle part, an edge part arranged around the middle part anda reinforcing part arranged in the middle part; in the height direction of the sounding device, the side magnetic conductive plate is correspondingly located below the vibrating diaphragm, the reinforcing part is provided with an extending part extending towards the side part, and the extending part crosses the inner side edge of the side magnetic conductive plate. The technical scheme has the advantage of high water pressure resistance, and the waterproof reliability of the acoustic device is improved.

The invention provides high-water-pressure washable polyurethane primer resin for a textile coating and a preparation method of the primer resin, and the primer resin is prepared from the following components: adipic acid and neopentyl glycol copolymerized dihydric alcohol, polycarbonate dihydric alcohol, 1, 4-butanediol, trimethylolpropane, toluene diisocyanate, 4, 4-diphenylmethane diisocyanate and ethylene glycol. The side chain methyl of the neopentyl glycol has good water repellency, so that the water pressure resistance of the product can be greatly improved, the hydrolysis resistance of the product is improved by combining the polycarbonate polyol, the water pressure before washing and the water pressure after washing of the product can be improved, and the product is also suitable for cloth with high denier (such as 600D oxford cloth and the like). The high-water-pressure washable polyurethane primer resin can be used for meeting the use requirements of the product under outdoor environment conditions, the adhesive force of the primer resin to the base material can be improved, the problem that the product prepared by coating the high-water-pressure washable polyurethane primer resin is easy to absorb water and swell is relieved, and the adhesive force of the polyester polyol is good, so that the water pressure after washing is greatly helped and improved.

A valve assembly is disclosed. The valve assembly is installed between an inlet pipe and an outlet pipe through which a fluid is transferred, the valve assembly including: a valve body in which an inlet portion which is connected to the inlet pipe and through which the fluid is introduced, a space portion in which the fluid supplied to an inside of the valve body through the inlet portion stays, and an outlet portion which is connected to the outlet pipe and through which the fluid of the space portion is discharged to the outside are formed; and an opening and closing unit configured to open or close a path of the fluid by moving in a state of being in close contact with an inner surface of the valve body, wherein the valve body is formed of a pipe of a steel or stainless-steel material.

The invention discloses a high pressure-resistant vibrating wire strain gauge comprising a cable joint, a cable, left and right flanges, a protection shell arranged between the left and right flanges, and a measuring device, a right fixed end, a partition joint, a steel wire and a steel wire protection tube which are arranged inside the protection shell. The steel wire is stretched and drawn in the steel wire protection tube, and is fixed to the left flange and the right fixed end. The measuring device is fixed to the steel wire protection tube by an injection mold. The measuring device, the steel wire, the steel wire protection tube, the left flange and the right fixed end form an integrated string core sensitive component. The integrated string core sensitive component is disposed inside the protection shell and completely isolated from the outside to ensure reliable resistance to water pressure. The partition joint is disposed in a cavity between the right fixed end and the right flange to play an isolation role. The water pressure resistance of the high pressure-resistant vibrating wire strain gauge of the invention is improved greatly, and the value measurement stability is improved significantly.

The invention discloses a cofferdam construction method combining film bag sand filling with a steel sheet pile. The cofferdam construction method comprises the steps of measurement and alignment, film bag positioning and laying, layer-by-layer film bag sand filling, muddy water discharging to enable a film bag sand cofferdam to precipitate, blow filling of closed sand between two layers of film bag sand, water pumping and drainage in a cofferdam foundation pit, steel sheet pile anti-seepage core wall construction and the like. According to the construction method, the film bag sand filling is combined with the steel sheet pile anti-seepage full-section cofferdam, the upper portion of the cofferdam is piled up with the film bag wrapped with sand soil, the lower portion of the cofferdam is anti-seepage through the steel sheet piles, the whole cofferdam becomes a whole, so that the cofferdam is high in integrity, good in self stability, high in adaptability to foundation, high in water pressure resistance and good in anti-seepage effect. The problem that the construction cofferdam is constructed under complex underwater geological conditions can be basically and effectively solved, the overall stability of a cofferdam structure is improved, and the cofferdam construction method has the advantages of being simple in process, fast in construction progress, low in cost and the like and has wide application prospects in the field of cofferdam construction of water conservancy projects.

The invention relates to the technical field of plumbing equipment, and provides an environment-friendly split type faucet. The environment-friendly split type faucet comprises a three-way shell, a plastic inner valve core pipe, a handheld switch, a valve and a water outlet pipe, and further comprises a first connecting part, a second connecting part, a ball ring and a sleeve. The first connectingpart sleeves the valve, and the lower end of the first connecting part is detachably connected with a mounting seat of a plastic inner valve core pipe valve core. One end of the second connecting parts partially penetrates through a water outlet of the plastic inner valve core pipe and rotatably connected with the water outlet of the plastic inner valve core pipe in a sealed mode, and a notchingaccommodating the ball ring is formed between a second ring boss of the second connecting part and the end port of the water outlet of the plastic inner valve core pipe, and the ball ring sleeves thenotching located between the second ring boss of the second connecting part and the end port of the water outlet of the plastic inner valve core pipe. The environment-friendly split type faucet solvesthe problems of high cost, complex structure and inconvenient assembly of an existing environment-friendly faucet.

The invention discloses a hydraulic gate for dam flood prevention. The hydraulic gate comprises a gate body and a door frame, the gate body is slidably connected into the door frame, hollow plates are fixedly connected to the left side and the right side of the door frame, and vertical plates are fixedly connected to the upper ends of the hollow plates. A hydraulic cylinder on a fluted disc stretches out and draws back to drive the gate body to slide up and down in the door frame, so that stable gate opening and closing are achieved; a transmission mechanism is arranged, a third gear is driven to rotate through a second motor arranged on a transverse plate, the fluted disc is rotatably connected with the transverse plate, rotation of the third gear is in linkage with rotation of the fluted disc, the upper end of the gate body is rotationally connected with a hanging rod, when the gate body is pushed upwards by the hydraulic cylinder, the fluted disc rotates by 90 degrees, and the top plate at the upper end of the hydraulic cylinder connected with the hanging rod can enter a containing groove in a pressing column; and the containing groove serves as a second protection project of the top plate, so that the situation that equipment is damaged greatly after the hydraulic cylinder is out of control can be avoided.

The invention discloses a viscous-elastic material transverse partition plate partition underwater sound absorption structure. A plurality of wall plates are vertically arranged on a bottom plate at intervals, a plurality of transverse partition plates are horizontally arranged on one side of each wall plate, a cell is formed between every two adjacent wall plates, and a viscous-elastic material is arranged in each cell. According to the structure, more adjustable parameters including structural parameters and material parameters are provided in the design aspect, corresponding adjustment canbe conducted according to the actual working condition requirements, the structure is simple, and manufacturing is easy.