283results about How to "Reduce the risk of water leakage" patented technology

The invention discloses a construction method for undermining a connected channe between shield sections in a water-rich sand cobble stratum tunnel. The construction method comprises steps of preparing for construction, constructing for a precipitation well, performing grouting reinforcement on stratum around a segment of a connection port of the connected channel, performing pre-measurement line drawing for a segment dismounting part on the segment of the connection port of the connected channel, setting up a temporary steel support at the connected channel, setting up a pipe shed and performing pipe shed grouting reinforcement, cutting the segment dismounting part and monitoring segment deformation and vault crown settlement conditions in real time, beginning to perform earth rock excavation and initial stage support of the connected channel, performing earth rock excavation and initial stage support of a pump house, performing waterproof construction of the connected channel, performing secondary lining for the connected channel and the pump house and second lining back grouting, dismounting the steel support and cleaning the site, and accepting check. The construction method of the invention is applicable to the construction of the water-rich sand cobble stratum connected channel, is reasonable and strict in layout, safe in construction process and multiply guaranteed in construction quality.

The present invention relates to a thyristor converter valve assembly. The thyristor converter valve assembly comprises a carrier on which a left valve unit and a right valve unit are arranged. Each valve unit includes reactor assemblies, resistor radiators and thyristor radiators. The thyristor converter valve assembly further comprises a water cooling system for cooling the reactor assemblies, the resistor radiators and the thyristor radiators. The water cooling system includes a main water in-coming path and a main water returning path which are communicated by a first water branch, a second water branch and a third water branch arranged in parallel. The reactor assemblies and the thyristor radiators of the left valve unit are all connected in series in the first water branch. The reactor assemblies and the thyristor radiators of the right valve unit are all connected in series in the second water branch. The resistor radiators of the left valve unit and the right valve unit are all connected in series in the third water branch. The thyristor converter valve assembly provided by the invention has a water cooling system and is simple in structure.

The invention discloses a non-cured rubber asphalt paint composite waterproof layer. The composite waterproof layer is formed by bonding non-cured rubber asphalt paint and a waterproof coil which is dissolved with the non-cured rubber asphalt paint. The composite waterproof layer gives full play to respective technological advantages of the non-cured rubber asphalt paint and the waterproof coil and a full-interface closed seal structure is formed by bonding the non-cured rubber asphalt paint and the waterproof coil firmly, thus achieving the aims of repairing and sealing cracks of subbases and capillary interstices and effectively preventing water channelling and water leakage between the composite waterproof layer and subbases.

The invention relates to a laying process for waterproof plates in a tunnel. The laying process comprises the following steps that firstly, the base surface of a primary support is treated; secondly,a geotechnical cloth is laid; thirdly, the waterproof plates are laid and fixed, specifically, the waterproof plates are laid, meanwhile, capsule gaskets are knocked across the waterproof plates through a rubber hammer, bonding agents are released after capsules are fractured, then pressing is conducted for five minutes so as to guarantee that the bonding agents form a bonding layer, and the thirdstep is repeated to continue fixing of the next waterproof plate; fourthly, plate width gaps of the waterproof plates are welded ; fifthly, the sealing situations of the gaps of the waterproof platesare checked and treated locally; and sixthly, a secondary lining layer is poured. The laying process for the waterproof plates in the tunnel has the beneficial effects that a hot-melting welding machine is not needed any more during hanging of the waterproof plates; the widths of the waterproof plates can be greatly increased; and connection of the plate width gaps of the waterproof plates can bereduced in the tunnel.

The invention discloses a photovoltaic module fixing structure for a photovoltaic module and profiled steel sheet integrated roof. The photovoltaic module fixing structure comprises a U-shaped support, a profiled steel sheet, a side locking support, a photovoltaic module and a pressing block, wherein the two sides of the profiled steel sheet are provided with a first side locking part and a secondside locking part which are locked with each other; the profiled steel sheet comprises a first profiled steel sheet body, the first profiled steel sheet body is provided with a main supporting part protruding upwards, and a groove fixedly connected with the U-shaped support is formed in the center of the main supporting part. The U-shaped support is used for being fixed to a roof purline and arranged between the inner walls of the two side walls of the main supporting part and the outer wall of the groove. The side locking support is used for connecting and locking the first side locking parts and the second side locking parts of the adjacent profiled steel sheets; and the photovoltaic module is erected on the adjacent main supporting parts and are pressed and fixed by the pressing blocks. According to the photovoltaic module fixing structure for the photovoltaic module and profiled steel sheet integrated roof, the construction difficulty is reduced, the installation and matching of all parts are ensured, the stability and wind lifting resistance of a photovoltaic roof system are improved, and meanwhile, the water leakage prevention performance is improved.

The invention discloses a thermostatic central gas water heater which comprises a gas water heater body and a hot water circulating pipeline connected on the gas water heater body, wherein the gas water heater body comprises a heat exchanger, a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are connected on the heat exchanger. The thermostatic centralgas water heater is characterized in that a communicating pipe is arranged between the water inlet pipe and the water outlet pipe, and a one-way stop valve is arranged on the communicating pipe; and acirculating pump and a water flow sensor are arranged on a pipeline between the connection point of the communicating pipe and the heat exchanger. During actual working, the thermostatic central gaswater heater controls the flow rate of circulating water by changing the rotation speed of the circulating pump, and further controls whether the gas water heater body is ignited or not, and respectively conducts greater circulation of preheating and short circulation of water mixing. Thus, the thermostatic central gas water heater avoids the poor bathing experience caused by cold and hot water after the central gas water heater without a temperature buffer container is opened at twice. The invention further provides a control method of the thermostatic central gas water heater.

The invention discloses a subway vehicle body and a roof drainage system thereof. The roof drainage system of the subway vehicle body comprises continuous rain eaves, air conditioner mounting platformdrainage structures, end wall drainage structures and a cab end drainage structure. The air conditioner mounting platform drainage structures are respectively mounted at four corners of a sunk air conditioner mounting platform; directions of first water inlets are parallel to the vehicle running direction, heights of first water outlets are lower than those of the first water inlets, and the first water outlets are communicated with the rain eaves. The end wall drainage structures are arranged on the heads, at the end walls, of the rain eaves and have drainage passages from top to bottom. Thecab drainage structure is provided with a drainage passage to drain water in the rain eaves to the vehicle bottom or the front of cab doors. In application of the roof drainage system, inertia forceand dead weight of water during acceleration and deceleration of the vehicle is utilized to guide water into the drainage structure to be drained, and thus drainage effect is thorough. Besides, the drainage pipeline is flushed through inertial force and dead weight of water so that blocking risk of the drainage pipeline due to dust accumulation is reduced.

The invention discloses a dish-washing machine heat air exchanger and water softener integration machine. The machine is installed on a liner, a water inlet passage, a resin cavity and a salt cavity are defined inside the heat air exchanger and water softener integration machine, and the water inlet passage is communicated with the resin cavity; the salt cavity is communicated with the water inletpassage and the resin cavity, the resin cavity is communicated with the liner through a water outlet formed in the heat air exchanger and water softener integration machine, and a salt cavity openingis formed in the salt cavity; the heat air exchanger and water softener integration machine and the liner are connected through the opening of the salt cavity, discharging openings are integrated atthe opening portion of the salt cavity, the liner is communicated with the inside of the heat air exchanger and water softener integration machine through the discharging openings, and the hidden trouble of water leakage of a dish-washing machine is reduced.

The invention belongs to the technical field of concrete outer wall construction, and provides an anti-cracking structure for a joint of a full-concrete outer wall under-window filling wall and a shear wall and a construction method thereof in order to prevent the problem that cracks are generated at the positions such as the under-window wall due to concrete shrinkage. Anti-cracking steel bars and joint pulling plates are arranged in a concrete pouring layer at intervals, wherein the joint pulling plates comprise horizontal structure joint pulling plates and vertical structure joint pulling plates; the horizontal structure joint pulling plates are arranged between floors or beams of all layers and the under-window filling wall; and the vertical structure joint pulling plates are arrangedbetween the shear wall and the under-window filling wall; transverse anti-cracking steel bars are arranged at the joint of the shear wall and the under-window filling wall, and the transverse anti-cracking steel bars penetrate through the vertical structure joint pulling plates to be bound and overlapped with wall body steel bars of the shear wall and the under-window filling wall on the two sides. The anti-cracking structure is convenient to assemble and disassemble, construction joints are avoided, the hidden danger of water leakage of the structure is reduced, and the applicability is improved. The operation is convenient, the construction quality and effect are good, the change of the overall rigidity is avoided, the construction period is shortened, and the structural safety is guaranteed.

The invention relates to a water purifier with a water tank. The water purifier comprises a housing component and the water tank, wherein the water tank is provided with a water inlet hole and a water outlet hole; and the water tank and part of the housing component are integrally formed by injection molding. According to the water purifier with the water tank, the water tank and the housing component are combined into a whole so as to reduce the consumption of material and the risk of water leakage.

The invention discloses a centrifugal pump impeller casting process. The process of conducting pouring according to a mold shell is the core of the centrifugal pump impeller casting process. The mold shell comprises a central hole corresponding to a to-be-cast impeller shaft hole so that the impeller shaft hole cannot be cast out. The centrifugal pump impeller casting process is characterized in that 2-4 axial ribs are evenly arranged along the circumference of the inner wall of the central hole of the mold shell so that a central columnar straight spure and 2-4 diversion inner spures connected into a whole together with the central columnar straight spure can be formed during pouring; and each diversion inner spure is formed by the area between the two corresponding adjacent ribs during pouring. By means of the process, it can be ensured that the shape and size of a shell mold are stable in the precise casting process, and therefore the impeller deformation shrinkage during casting is reduced, the impeller finished product percent of pass is increased, the efficiency of centrifugal pumps is improved, and the service life of the centrifugal pumps is prolonged.

The invention provides a method for detecting a drainage failure of water use equipment and mainly aims to solve defects existing in existing water use equipment which applies a water level switch or a water level sensor to detect drainage failures. The invention provides a detection method, wherein measurement signals of a turbidity sensor can be used to monitor drainage situations when no water level switch or water level sensor exists, so whether a drainage system has failures can be determined. The detection method provided by the invention has the advantages that a drainage detection algorithm is combined and used to motor drainage situations, so the water level switch or water level sensor is not needed, and the cost is reduced; and a new function of detecting a drainage water level, namely the function of detecting whether the drainage has the failures is developed besides a pollution degree detection function and a temperature detection function of the turbidity sensor.

The invention provides a grouting method for tunnel grouting reinforcement. The grouting method comprises the steps that a grouting-stop wall is constructed on a tunnel face; a plurality of grouting holes are drilled in the grouting-stop wall, borehole orifice pipes are correspondingly mounted in the grouting holes, and the multiple grouting holes comprise a plurality of outer ring drilled holes and a plurality of inner ring driller holes, the extending directions of the inner ring driller holes are parallel to the horizontal direction, the extending directions of at least parts of the outer ring drilled holes are inclined to the horizontal direction, and at least parts of the outer ring drilled holes extend to the outer sides of a preset excavation contour; and slurry is injected into thegrouting holes. According to the grouting method, the outer ring drilled holes and the inner ring driller holes can be grouted respectively, grouting blind areas can be avoided, and thus a soil bodyis effectively reinforced.

The invention discloses a hydrophilic anti-adherent film. The hydrophilic anti-adherent film is characterized by comprising an anti-adherent layer and a hydrophilic layer, wherein the hydrophilic layer can ensure that water is rapidly and uniformly distributed on the hydrophilic layer; preferably, the hydrophilic layer is prepared from the following raw materials in parts by weight: 60.0-80.0 parts of high-density polyethylene, 5.0-20.0 parts of polyvinyl alcohol or ethylene-acetic acid vinyl ester copolymerization resin and 5.0-25.0 parts of low-density polyethylene. The hydrophilic layer of the anti-adherent film provided by the invention has polarities and a good soaking effect to water; when the hydrophilic layer is in contact with water, the hydrophilic layer can be rapidly soaked and spread to form a layer of water film; and when a high-temperature self-adherent material is in contact with a silicon resin surface of the anti-adherent film, the water film on the back surface can absorb lots of heat to evaporate, thus the temperature of the silicon oil surface is rapidly reduced and does not exceed 100 DEG C all the time, namely the temperature of the anti-adherent layer is substantially reduced, and a 'silicon transfer' phenomena of silicon resin can be effectively avoided, so that initial viscosity of a self-adherent coiled material is not affected.

The invention belongs to the field of shield tunnel shock absorption, and particularly discloses a self-resetting energy dissipation device for shield tunnel shock absorption. The device comprises steel core outer rings, waterproof gaskets, rubber gaskets and shape memory alloy rings, wherein the inner sides of the steel core outer rings are provided with inclination angles, and the outer sides ofthe steel core outer rings are provided with grooves; the waterproof gaskets are fixed in the grooves in the outer sides of the steel core outer rings, and the rubber gaskets attach to the outer sides of the waterproof gaskets and the steel core outer rings; the shape memory alloy rings are installed between the two steel core outer rings, and the surfaces of the shape memory alloy rings attach to the inclination angles at the inner sides of the steel core outer rings; and when external force is applied, the distance between the two steel core outer rings is compressed, the shape memory alloyrings deform due to extrusion of the steel core outer rings, expand outwards and generate restoring force at the same time, so that energy is dissipated, and the structure of the device is enabled toreset. The device has a good buffering effect, can dissipate energy, can also provide the restoring force, and plays a role in self-resetting after an earthquake, and thus the maintenance and replacement cost of a tunnel is reduced.

The invention discloses a dish-washing machine drainage detection method and a dish-washing machine drainage detection device. The dish-washing machine drainage detection method comprises the steps that a dish-washing machine starts to execute a water inlet program, water inlet is started after drainage of execution time t, the situation that a water inlet parameter reaches a preset water level isdetected, the detected water inlet parameter is compared with a preset value, and the drainage fault situation is judged. The method is convenient and reliable, can accurately judge and grasp whetherdrainage of the dish-washing machine is finished or not, and further can accurately judge whether the dish-washing machine has a drainage fault or not.

The invention discloses an intelligent water-saving reverse-osmosis water purifier with a return device and a method for purifying water by using the intelligent water-saving reverse-osmosis water purifier and relates to the field of water purification. The water purifier comprises a water purifier main body; the water purifier main body is internally provided with a first pretreatment filter element, a second pretreatment filter element, a reverse-osmosis filter element, a low-voltage switch, a water inlet solenoid valve, a boosting pump, a first one-way valve, a high-voltage switch and a return pipeline. The method comprises the steps: connecting tap water to a water inlet of the reverse-osmosis water purifier, and starting the water purifier; and enabling water obtained by filtering the tap water by using the first pretreatment filter element and the second pretreatment filter element of the water purifier to enter the reverse-osmosis filter element to carry out purification to prepare pure water, wherein concentrated water produced in a pure water preparation process comprises two parts, one part of concentrated water returns to the boosting pump by the return pipeline, and the other part of concentrated water is directly discharged from a concentrated water discharging hole. By using the intelligent water-saving reverse-osmosis water purifier, not only can the discharge of the concentrated water be controlled to increase the water-saving energy efficiency, but also the risk of water leakage is reduced to the maximum extent, and meanwhile, the water quality and the use condition of the filter elements can be perceptually known by a user.

The invention relates to an explosion-proof, waterproof and breathable valve, which comprises a valve body, a cover body, a waterproof and breathable film, and an elastic dome. A sliding ring assembly is set in the chamber, and a pressure relief hole is arranged on the side wall of the valve body or the cover body. , a waterproof rubber ring is fixed on the end face of the sliding ring assembly. The waterproof and gas-permeable membrane of the present invention will not be punctured, and the waterproof and gas-permeable membrane returns to a normal state after the excessive internal pressure is released. At the same time, since the dome is used as the elastic part for the position restoration of the internal components, the sensitivity and smoothness of the waterproof and breathable membrane, the main ring, the pressure ring and the inner ring in the process of moving outwards under the pressure of the internal pressure of the equipment are improved, ensuring The inside of the device and the pressure relief hole can be accurately connected to realize the release of pressure, which is safer and more reliable. The entire valve can be designed to be thinner and smaller, and it is more convenient to apply to equipment with limited installation space and high installation requirements.

The invention relates to the technical field of train sewage disposal, especially to a train and a train water supply system. According to the train water supply system, a water tank is moved from thecar bottom to the car top and is arranged above a urinal and a washing facility, the water tank supplies water to the urinal and the washing facility through gravity, and the leakage risk and damagecaused by leakage are lowered; overall layout of the water tank, the urinal and the washing facility is compact, energy consumption is less, pipe arrangement is short, and recondition and maintenanceare convenient; a sewage box, the urinal, a transit box and the washing facility on the car are arranged in the car, the layout structure is compact, and pipe connection is simple; the sewage box is of a vertical structure and can be placed on a bottom frame of a car body, the side of the sewage box is mounted on the side wall of the car body, stable mounting is achieved, the vertical structure makes full use of the height space of a carriage, the horizontal space of the sewage box is reduced, and carriage utilization is improved; and relative to a lifting box body under the car, the sewage box structure arranged in the car is high in safety coefficient, less in energy consumption, convenient to maintain, and saving in space under the car, and the sewage box structure is suitable for carswith the small space under the car, such as double-deck car.

The invention discloses night luminous house ventilation equipment which comprises a structure bracket and a photovoltaic component arranged at the top of the structure bracket, wherein the structure bracket is composed of multiple main skeletons arranged in parallel and brackets connected between the main skeletons; a luminous rain baffle is arranged above the structure bracket; arc outer casings are symmetrically arranged on the two sides of the structure bracket; symmetric air outlets are formed between the rain baffle and the outer casings on the two sides; a middle suspending valve plate and an electric push rod are arranged at the air outlets on the structure bracket; one end of the middle suspending valve plate is articulated with the structure bracket while the other end is connected with the electric push rod; and the electric push rod drives the middle suspending valve plate to control the opening/closing of the air outlets. The equipment disclosed by the invention has the advantages of light structure weight, good ventilation effect, low local resistance, convenience in mounting, simplicity in operation, good lighting effect, resistance to rain and snow, no energy consumption, conversion of luminous energy stored at daytime into electric energy, illumination at night and the like.

The invention discloses an underground mould bag pile supporting method. The method includes the following steps that (1), pore-forming is conducted by using a drilling machine to form a mold bag hole, an injection pipe is arranged in the mold bag hole, a grouting outlet hole is formed in the injection pipe, the injection pipe is internally provided with a separator, a mold bag is arranged in themiddle rear section of the injection pipe, at least one grouting outlet hole formed in the injection pipe communicates with the mold bag, a draining pipe is arranged between the rear section of the mold bag and the outer wall of the injection pipe, and the front section of the injection pipe includes a segmented mold bag; (2), first grouting equipment is firstly used for injecting first grout intothe injection pipe to make the mold bag be saturated, then second grouting equipment is used for injecting second grout into the injection pipe, and the second grout flows out of the injection pipe from a front grouting outlet hole; and (3), grouting is conducted on the mold bag hole alternately, and grouting is conducted on a mold bag pile I firstly, and then grouting is conducted on a mold bagpile II after a mold bag I expands fully and achieves certain strength until a mold bag pile supporting wall structure is formed. The underground mould bag pile supporting method has the advantages ofbeing good in stress condition, capable of stopping water, capable of effectively controlling excavation subsidence and the like.