134results about How to "Reduce heat up" patented technology

The invention relates to a method of preparing polymer asphalt with one step to modify the asphalt by adopting the polymer as a modifying agent. In a peptizator of 80 to 160 DEG C which account for 5 to 27 percent of the total weight of the raw materials, the polymer modifying agent and 0.1 to 2 percent of stabilizer which account for 2 to 9 percent of the total weight of the raw materials are added, and then is poured into a plastic extruder where the rotating speed is 300 to 800 rotations per second to be extruded; the extruding temperature is controlled to be 130 to 210 DEG C; the extruded polymer is directly and mixingly stirred for 0.5 to 6 hours together with the asphalt which accounts for 62 to 89.9 percent of the total weight of the raw materials, then the polymer modified asphalt is gained, which is provided with good heat preservation function, good low temperature expanding performance, anti-fatigue and anti-tearing function and relatively good weatherproof function. After being mixed with the stones, the mixed materials perform good water stability and high and low temperature stability, which can effectively improve the using performance of the asphalt pavement and prolong the service life.

The invention relates to the field of metal material heat treatment, in particular to hot-work die steel and a heat treatment method thereof. The heat treatment method comprises the following steps of1), heating the die steel at rate of 80-180 DEG C / min to 1100D EG C-1300 DEG C, and carrying out heat preservation for 3-10 minutes; 2), quenching the die steel after heat preservation in a quenchingmedium; and 3), tempering the quenched die steel. According to the method, the obtained hot-work die steel grains are not coarsening, the carbides are more dispersed and distributed, the tempering stability is good, the high temperature strength at the same hardness after processing is greatly improved, the thermal fatigue performance of the die steel is improved, after the heat treatment is performed to the same hardness, the impact toughness of the die steel after the new process is slightly higher than that of the traditional process, the method greatly shortens the heating and heat preservation time in the quenching process, and can achieve the effects of saving time and cost for small-batch and small-sized products.

The invention provides equipment for drying and carbonizing wood integrally. The equipment comprises a pressure adjusting system, a heating and cooling system, a material loading, transporting and pressurizing system and a water drainage system; an exo-box heat conduction oil pipe of the heating and cooling system penetrates through a treatment box and is welded to a wall of the treatment box for being sealed; a water inlet valve of the water drainage system is connected to the treatment box and a water drainage box through connection pipelines; and an outer wall of a hydraulic cylinder of the material loading, transporting and pressurizing system is welded to the treatment box in a sealed mode. The equipment has the advantages that the repeated loading, stacking, heating and cooling steps of the drying and heat treating steps of wood are reduced, so that the processing efficiency is improved, and the energy consumption is lowered; a processing method is flexible and multipurpose and the equipment is multifunctional; the whole drying and carbonizing treatment is carried out on the vacuum and negative pressure conditions, the content of air in the treatment box is small, and the oxygen content is low; carbonized wood making contact with a hot plate can be fast cooled; and the wood can be prevented from being deformed, warped and cracked in the vacuum drying and vacuum carbonizing stages.

The invention discloses an immersion spraying composite fruit-vegetable pre-cooling device. The immersion spraying composite fruit-vegetable pre-cooling device comprises a fruit-vegetable pre-cooling box body, a flexible conveyor belt which is arranged on the fruit-vegetable pre-cooling box body, a conveyor belt supporting seat with adjustable height, a spraying device which is arranged above the flexible conveyor belt, a power device and a refrigerating unit, wherein the flexible conveyor belt is connected with the power device, and the flexible conveyor belt is arranged on the conveyor belt supporting seat. When the watering-type cold water pre-cooling is executed, only the conveyor belt supporting seat needs to be adjusted, so that the flexible conveyor belt is integrally arranged above the water surface in the fruit-vegetable pre-cooling box body, the spraying device above the flexible conveyor belt is powered on, so that the watering-type cold water pre-cooling can be realized; when the immersion-type cold water pre-cooling is needed, only the conveyor belt supporting seat needs to be adjusted, so that the middle part of the conveyor belt descends into water in the fruit-vegetable pre-cooling box body, and the immersion-type cold water pre-cooling is realized. By adopting the immersion spraying composite fruit-vegetable pre-cooling device, different pre-cooling requirements on different fruits and vegetables can be met, the expense for purchasing multiple devices can be reduced, convenience in moving and uniformity in pre-cooling can be realized, and the water loss is low.

The invention discloses a steel wood indoor door which comprises a magnetic attraction plate on a wall and a steel plate door body. The magnetic attraction plate is arranged in a room and is in contact with the steel wood indoor door. The steel plate door body is plated with chrome or aluminum, and the surface of the steel plate door body is coated with an inflaming retarding coating and an anti-fingerprint coating. The steel plate door body is internally provided with a sandwich structure with two layers of inflaming retarding boards clamping a layer of grid-shaped steel frame. A first plate body, namely an iron plate, is welded to the side, facing the wall, of the door body. The first plate body is connected with a second plate body through a first hinge, the long edge, not connected with the first hinge, of the second plate body is connected with a third plate body through a second hinge, and magnets are installed on the side, facing the wall, of the second plate body and the side, facing the wall, of the third plate body respectively. According to the steel wood indoor door, due to the fact that the surface is coated with the inflaming retarding coating and the anti-fingerprint coating, meanwhile, the door body is filled with materials, a foldable shoe rack is installed based on the magnetic attraction principle, the high fireproof performance and physical strength are achieved, cleaning is easy, and the space utilization rate is high.

The invention provides a wide-angle concentrated photovoltaic power generating system with wavelength selectivity and a method thereof. Direct light, refracted light and scattered light are fully collected by a curved microlens array and a funnel-shaped light cone at a wide angle, both the refracted light and the scattered light are collimated into light which is perpendicularly incident at a photovoltaic battery, and a rotating mechanism for tracking the sun is saved. A wavelength selecting layer is adopted for selecting wavelengths of the light. The light in a wavelength range causing the photovoltaic battery to warm and radiate heat is filtered, only light in the wavelength range with high response sensitivity to the photovoltaic battery is reserved, and the heat radiation requirement of the photovoltaic battery under concentrated conditions is lowered. The whole system realizes a wide-angle and all-around concentrated photovoltaic function with the characteristics of no sun tracking, no pitch-angle adjustment and optimal wavelength selectivity, and the photovoltaic power generation cost is obviously lowered to that of a common energy level.

The invention relates to the technical field of iron and steel smelting, and particularly discloses a smelting method of ultra-low carbon steel. The smelting method comprises the following process steps that a, desulfurization pretreatment is carried out on molten iron, and then converter smelting is carried out; b, argon blowing stirring is carried out on molten steel tapped from a converter, andLF refining is carried out after argon blowing stirring is finished; and c, the molten steel refined by an LF enters an RH furnace to be refined. According to the method, the LF-RH duplex process isadopted, so that the smelting time of the ultra-low carbon steel is shortened, the tapping temperature of the converter is effectively reduced, the erosion of a furnace lining can be reduced, the operation of an RH oxygen lance can be reduced, the service frequency of the oxygen lance can be reduced, the service life of the oxygen lance can be prolonged, and the production cost can be reduced.

The invention relates to the field of metallurgy and discloses a method for preparing titanium carbide slag. The method is characterized by comprising the following step: under the existence of a preheated carbonaceous reducing agent, performing heating and carbonizing reduction on hot high Ti-bearing slag in an electric-arc furnace in turn, wherein the preheated carbonaceous reducing agent is added twice in a temperature rise period and a carbonizing reduction period, the temperature of the preheated carbonaceous reducing agent is 400-1000 DEG C, the temperature is increased to 1400-1700 DEG C in the temperature rise period, and the final temperature in the carbonizing reduction period is at 1500-1800 DEG C. The method for preparing titanium carbide slag, provided by the invention, has the advantages of low energy consumption, high heating efficiency, short reaction time, low production cost, and the like.

The invention discloses a smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint and a preparation method thereof. The wear-resistant paint comprises an inorganic nano resin and a mixed solvent, wherein the inorganic nano resin is prepared from the following components in percentage by weight: 30-90% of silicon dioxide, 10-70% of silane, 0.1-10% of pH value regulator and 0.01-1% of accelerator HMT (hexamethylenetetramine); and the mixed solvent is prepared from high-temperature-resistant environment-friendly pigment, filler, ethanol and water. The preparation method comprises the following steps: mixing the nano silicon dioxide dispersion with different particle sizes, adding the pH regulator and mixed silanes, carrying out thermostatic reaction, adding the metered accelerator HMT, and keeping the temperature to react, thereby obtaining the inorganic nano resin; and mixing the prepared inorganic nano resin and the mixed solvent, dispersing with a high-speed dispersion machine at high speed, and grinding to obtain the smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint. The smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint is smokeless, smellless and environment-friendly, does not discolor, has high wear resistance, and has favorable functions of corrosion resistance and rust prevention.

The invention provides a climate adaptability transparent water storage enclosing structure for a low-energy-consumption building and an operation method and relates to the technical field of building energy saving and building enclosing structures. According to the transparent water storage enclosing structure for the low-energy-consumption building, the problems that as for an current building with a plurality of transparent enclosing structures, the comfort in summer and winter is poor, and energy consumption is high are solved. The transparent water storage enclosing structure for the low-energy-consumption building comprises transparent water storage modules, supporting connecting frames of the transparent water storage modules, an adjustable shading device, a water system pipeline, an outer layer transparent enclosing structure and an automatic control system, wherein the adjustable shading device and the water system pipeline are arranged on the outdoor sides, and the outer layer transparent enclosing structure and the automatic control system can be additionally arranged. The climate adaptability transparent water storage enclosing structure is mainly characterized in that the transparent water storage modules are used for water filling, and thus the thermal inertia and thermal storage property of the enclosing structure are strengthened; a flow resisting layer is used for restraining convection to enhance the thermotechnical efficiency of the transparent water storage modules; meanwhile, relying on simple adjustment of the adjustable shading device in summer and winter, when stored water is overheated in summer, the water is discharged and heat is dissipated, and in the extreme low temperature in winter, the water is discharged to form an air layer for heat preservation; and through reusing of returned water generated by gravity self-flowing and natural daylighting, the indoor thermal comfort is kept, and building energy consumption is reduced.

Embodiments described herein provide optical systems in which phosphors are used to down-convert light. In general, optical systems can include a light guide configured to propagate light from an entrance face to a distal end along a propagation axis using total internal reflection. A phosphor layer can be disposed orthogonal to the entrance surface of the light guide.

The invention discloses a bus duct insulation connection structure with a heat dissipation function. The bus duct insulation connection structure comprises a shell, wherein wiring heads are fixedly arranged on the two sides of the outer surface of the shell respectively; a mounting base is welded at the bottom of an inner cavity of the shell; a bus duct body is fixedly arranged at the top of the mounting base; a condenser is arranged on one side of the bus duct body; a connecting flange is fixedly arranged at an air outlet in one side of the condenser; one end of the connecting flange is fixedly connected with a cold air output pipe, and one end of the cold air output pipe is fixedly connected with a connecting sleeve; a coiled pipe is fixedly connected to the air outlet in one end of theconnecting sleeve; and the inner side of the coiled pipe is in contact with the outer surface of an insulating sleeve. According to the bus duct insulation connecting structure with the heat dissipation function, the condenser is arranged, so that cold air can be generated, and cold air enters the shell through the coiled pipe, the temperature in the shell can be further reduced, and a good working environment is provided for the bus duct body, so that the service life of the internal power part is prolonged.

The invention discloses a laser paint removing method for a polyimide coating enameled wire. The laser paint removing method is characterized by comprising the following steps: a, surface pretreatment: adjusting a focusing of a first laser beam on a paint layer of the enameled wire until the diameter of a light spot is minimum, and scanning the path in a non-cross manner until the whole paint layer is rough, invisible and smooth; b, heating to remove paint, adjusting a second laser beam to focus on a paint layer of the enameled wire until the diameter of a light spot covers the paint layer inthe width direction, and scanning the whole paint layer for multiple times in the length direction of the enameled wire until the paint layer falls off; and c, performing surface treatment again to remove residual paint, adjusting a third laser beam to focus on a paint layer of the enameled wire until the diameter of a light spot is minimum in an inert gas environment, and performing multi-time path cross scanning until the natural color of the copper substrate of the whole enameled wire is completely exposed. The required laser power is reduced compared with that of a single laser wavelengthand a single processing step, and the laser power requirement for reducing the wavelength is advantageous for reducing the production cost and reducing the energy consumption.

The invention relates to a water-based fireproof coating suitable for railway vehicle chassis and a preparation method thereof, and belongs to the field of water-based fireproof coating. The water-based fireproof coating disclosed by the invention is prepared from the following substances in parts by mass: 20-30 parts of a film-forming substance, 40-60 parts of an intumescent flame-retardant system, 5-8 parts of titanium dioxide, 2-4 parts of nano magnesium aluminum hydroxide, 1-2 parts of organic bentonite, 1-3 parts of expandable graphite, 9-17 parts of deionized water, 0.8-1.3 parts of a film-forming aid, 0.2-0.5 part of a dispersing agent and 0.2-0.5 part of a defoaming agent; the intumescent flame-retardant system is prepared from melamine phosphate, dipentaerythritol and melamine, and the mass part ratio of the melamine phosphate to the dipentaerythritol to the melamine is 1.8-2.3: 0.8-1.2: 0.8-1.2. The water-based fireproof coating can met structure fire-resistant requirement of the chassis of the railway vehicles; no volatilization of harmful substances such as organic solvents is caused in the construction and drying processes; the occupational health and safety of constructors are guaranteed; equipment can be flexibly selected for use according to different scenes; investment of special equipment is reduced; and production cost is reduced.

The invention relates to a hydraulic cylinder, in particular to a self-relieving hydraulic cylinder and a steel bar bending machine. The self-relieving hydraulic cylinder comprises a cylinder barrel and a piston, wherein the internal portion of the piston is provided with a hollow structure, the hollow structure is provided with a left inward convex edge and a right inward convex edge, the internal portion of the hollow structure is further provided with a left conical block and a right conical block, grooves for retaining a spring are formed between the left conical block and the right conical block, and the spring is connected with the left conical block and the right conical block; the back surface of the right conical block is fixedly connected with an ejector rod and the right end of the ejector rod exceeds the right side of the piston; a connecting rod is installed on the left conical block. The steel bar bending machine comprises a bending machine body, wherein the bending machine body is provided with a hydraulic cylinder which is said hydraulic cylinder. The self-relieving hydraulic cylinder has the advantages that the temperature of hydraulic fluid can be prevented from rising, the normal use is guaranteed and the phenomenon of cylinder expansion does not occur, and the operating speed can be further improved; the steel bar bending machine has the advantages that the temperature rise of the hydraulic cylinder is reduced and the service life is guaranteed.

The invention provides a quartz crucible for founding lanthanide series optical glass; the quartz crucible comprises a quartz crucible and a fire-resistant material base arranged at the bottom part of the quartz crucible. The invention further provides a method for founding lanthanide series optical glass slag clinker. Through improving the crucible structure as well as changing the heating technology and the founding technology, the heating and founding time is greatly shortened without affecting the quality of products, the production efficiency is improved, the corrode to the quartz crucible during the founding process is reduced and the energy cost is reduced.

The invention discloses a water-based super-thin steel structure fire-retardant coating. The water-based super-thin steel structure fire-retardant coating is characterized by being prepared from, by weight, 25-30% of ammonium polyphosphate, 6-10% of melamine, 8-11% of pentaerythritol, 7-9% of titanium dioxide, 5-6% of zinc borate, 2-3% of talcum powder, 20-22% of acrylic resin and the balance water. By the adoption of the water-based super-thin steel structure fire-retardant coating, the fire endurance of a steel structure can be improved, a coating film which is 2 mm thick can resist fire for 2 h, construction is convenient, and cost is low.

The invention discloses an air energy low-temperature liquefied gas pump-free filling system. The filling system mainly includes a gas dispenser (1), a transfer tank (2), a supercharger (3), a temperature increasing gasifier (4), a high pressure and low temperature storage tank (5), a vent pipe (6), an EAG gasifier (7), a low pressure and low temperature storage tank (8), a low saturation heat exchanger (9) and the like. A gas cylinder is filled with gas from a low temperature liquefied gas station, a pump is not needed, and the low pressure and low temperature storage tank (8) storing low temperature liquified gas is no needed to be pressurized; with the pressure provided by the high pressure and low temperature storage tank (5), the temperature difference between the low temperature liquefied gas and air can be used for absorbing air energy; low temperature liquified gas or high-pressure gas is additionally filled to the high-pressure gas cylinder, and the temperature and the pressure of a low temperature liquid stored in the low pressure and low temperature storage tank (8) are almost not increased due to gas filling. The energy consumption is reduced, the construction cost, useand maintenance cost of the gas filling station system device are also reduced, and the operation is safer and more reliable.

The invention discloses an air energy low-temperature liquefied gas non-pump filling system. According to the non-pump filling system, when gas is added into a gas cylinder from a low-temperature liquefied gas station, no pump is required, and pressurization of low-temperature liquefied gas storage equipment is not required, either. The temperature difference of low-temperature liquefied gas and air can be used for absorbing air energy, the low-temperature liquefied gas or high-pressure gas is filled into a high-pressure gas cylinder, and the temperature and pressure of low-temperature liquid inside the low-temperature liquefied gas storage equipment are scarcely increased due to gas addition. Energy consumption is reduced, and the building cost and the using and maintaining cost of gas station system equipment are also reduced, and therefore operation is safer and more reliable.

The invention discloses a novel transformer chip heat radiator, and belongs to the technical field of heat radiator devices. The novel transformer chip heat radiator comprises a transformer body, a plurality of vertical main heat dissipating pieces distributed uniformly are welded to the side wall of the transformer body, and a plurality of heat dissipating scale bodies are welded to the verticalmain heat dissipating pieces; a plurality of washing flow guiding holes distributed uniformly are formed in the heat dissipating scale bodies and located at the ends close to the vertical main heat dissipating pieces, and thermal insulating layers are fixedly connected to the upper surfaces of the heat dissipating scale bodies and coated with reflective layers; the radiator can improve the heat dissipating point height of the transformer to increase oil flow falling, it can be easily ensured that oil flow is smooth, and heat transferring and heat dissipating are quick, through the vertical main heat dissipating pieces of bending structures and the heat dissipating scale bodies, the heat dissipating effect can be greatly improved, when sunniness is powerful, temperature rising which is caused by sunlight and occurs on the transformer body can be greatly reduced, and the transformer cannot be easily destroyed due to high temperature.

The invention discloses a method for extracting collagen protein from tuna skin via enzymolysis assisted by impulse ultrasound, which belongs to the technical field of natural protein extraction. Themethod comprises the following steps: firstly, the tuna skin is treated for defatting and removing miscellaneous proteins; secondly, an impulse ultrasound assistance method is adopted for speeding upthe extraction process in which pepsin is adopted for the enzymolysis of the collagen protein; and finally, the tuna skin collagen protein with a I type spiral structure is obtained by centrifugation,purification and drying after the enzymolysis assisted by the impulse ultrasound is finished. By adopting the enzymolysis assisted by the impulse ultrasound for speeding up the extraction process ofthe collagen protein and finally obtaining the tuna skin collagen protein with the I type spiral structure, the invention has the advantages that the operation process is simple and easy, the extraction rate of the tuna skin collagen protein is greatly improved, and the energy consumption is lower.

The embodiment of the invention discloses a control method and device, a terminal and a storage medium. The method comprises the following steps: obtaining a video call instruction; obtaining environment temperature according to the video call instruction; and if the environment temperature exceeds a temperature threshold, executing a video call stop operation. The technical scheme provided by theembodiment of the invention is applied to a wearable smart terminal; when the temperature is too high, the video call is stopped so as to reduce temperature rise; high temperature of the terminal caused by use of the video call can be avoided in case of high environment temperature; furthermore, the terminal is avoided from irreversible loss or a user is avoided from low temperature burn.

The invention discloses a preparing experiment platform for modifying asphalt through rubber powder. The preparing experiment platform comprises a controller, an oil tank used for storing the asphalt, a reaction kettle, a temperature rise kettle, a mother liquor tank, and a packing auger used for conveying the rubber powder into the reaction kettle. Pipelines are arranged between the oil tank and the reaction kettle, between the reaction kettle and the temperature rise kettle, and between the temperature rise kettle and the mother liquor tank to carry out material exchanging. Multi-tank type design is adopted, pumps and the pipelines are utilized for interaction among all the tanks, and realizing efficiency and experiment safety are effectively ensured; the temperature rise tank is utilized for directly preserving reaction temperature of the asphalt to be proper, the temperature rise process in the reaction kettle is reduced, experiment reaction time is shortened, the reaction kettle and the mother liquor tank cooperate for use, the rubber powder doping ratio can be increased, and especially when experiments are carried out, the small amount of rubber powder can be doped many times according to the stirring speed and the reaction temperature.

The invention relates to a heater of the tubular electric element pipe of a carbon product and the heater adopts the tubular electric heating element of the carbon product as heat energy. The heater of the invention comprises a body provided with a plurality of vertically-arranged radiating fins and is characterized in that at least one tubular electric heating element of the carbon product passes through and is arranged in the body; the electric heating pipe of the carbon product is fixed on a framework. Therefore, the heater of the invention has the advantages of: 1. reasonable design, novel structure and high mechanical strength; 2.high heating efficiency, good working stability, safety and reliability and rapid heating and cooling; 3. low manufacturing cost, long service life, no power attenuation for long-term use and constant temperature during the operation. 4. energy saving and good effect of environmental protection.

The invention relates to the field of sea-island filaments, and particularly discloses a high-flame-retardant superfine sea-island filament and a preparation method thereof. The high-flame-retardant superfine sea-island filament comprises a sea-island filament inner layer and a sea-island filament outer layer wrapping the sea-island filament inner layer, and the sea-island filament outer layer is made of flame-retardant fibers; the sea-island filament inner layer comprises the following raw materials in parts by weight: a PET solution and a COPET solution; the PET solution is prepared from the following raw materials in parts by weight: 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of an antistatic agent, 1-3 parts of a dispersing agent and 1-3 parts of an antibacterial agent; the COPET solution is prepared from 30 to 40 parts of COPET; the flame-retardant fiber is prepared from the following raw materials in parts by weight: 3 to 5 parts of polyacrylate, 10 to 15 parts of zirconium dioxide fiber, 3 to 5 parts of nano titanium dioxide, 3 to 8 parts of aluminum hydroxide and 2 to 3 parts of red phosphorus; the prepared sea-island filament has the advantage of high flame retardance.

A vacuum oven capable of heating fast comprises a working box body (2) mounted in an oven main body (1) and a heating device (3) arranged outside the working box body (2) and used for replenishing heat for heat dissipation on the outer wall of the working box body (2); the working box body (2) is a high-vacuum resistant and high-pressure resistant working box body. The vacuum oven capable of heating fast has the advantages of short heating time and high utilization ratio of the box body.

The invention discloses a method for preparing resistant starch by adopting ultrasonic-assisted amylase, and belongs to the technical field of preparation of resistant starch. The preparation method comprises the following steps: (1) cleaning and finishing sagittaria sagittifolia; (2) performing ultrasonic extraction on sagittaria sagittifolia starch; (3) preparing the resistant starch; and (4) performing enzymolysis under an ultrasonic field, and performing freeze-drying to obtain the sagittaria sagittifolia resistant starch. According to the invention, movement of solvent molecules is accelerated through cavitation action and mechanical vibration action of ultrasonic waves, and the extraction rate of target products is improved. Beneficial effects are as the follows: (1) a multi-frequency ultrasonic mode is utilized, so that temperature rise of a reaction system is reduced, and energy is saved more; and the method is simple and feasible in operation process, can greatly improve the extraction rate of sagittaria sagittifolia starch, has low energy consumption, and overcomes the defect that a large amount of alkali liquor is used in a traditional sagittaria sagittifolia starch extraction process; and (2) ultrasonic wave can be used to accelerate an enzymolysis reaction, increase the yield of reaction products, reduce the using amount of enzyme, shorten the reaction time and improve the yield of the sagittaria sagittifolia resistant starch.

The invention relates to a phase-change concrete quasi-rectangular pipe gallery structure. The phase-change concrete quasi-rectangular pipe gallery structure comprises a plurality of quasi-rectangularsegment rings (quasi-rectangular pipe gallery sections) which are sequentially connected in the longitudinal direction, an upper half partition wall, a lower half partition wall, a cast-in-place transverse partition plate, connecting bolts and a joint waterproof structure; the quasi-rectangular segment rings are connected through longitudinal connecting bolts, and all segments in the quasi-rectangular segment rings are connected through segment circumferential connecting bolts; the middles of the quasi-rectangular segment rings are connected with the upper half partition wall and the lower half partition wall through embedded steel bars correspondingly; the upper half partition wall is connected with the lower half partition wall through partition wall connecting bolts; and the cast-in-place transverse partition plate is constructed in a cast-in-place mode and located between the partition walls and the segments. The quasi-rectangular comprehensive pipe gallery has the beneficial effects that compared with a traditional circular comprehensive pipe gallery, space structure dividing of the quasi-rectangular structure is easier, the space utilization rate is increased, laying, maintaining and repairing of various pipelines are facilitated, and the maintaining cost is reduced.

The invention relates to an LED pulsed light hair removal instrument. The LED pulsed light hair removal instrument comprises an LED light source module, a sensor module, an interaction module and a pulse control module, wherein the LED light source module is used for generating pulsed light, and light parameters of the pulsed light are obtained through calculation based on thermal relaxation of multiple cells of hair follicles and peripheral tissues of the hair follicles; the sensor module is used for acquiring working data; the interaction module is used for receiving a control command; and the pulse control module is used for controlling the LED light source module to work according to the working data and the control command. The hair removal instrument is small in size, stable in workand good in treatment effect.

The invention relates to the field of bridge construction, in particular to a construction method of an inverted-Y-shaped upper tower column closed section. A bridge tower is of a reinforced concretestructure, comprises two lower tower columns, two lower crossbeams, two middle tower columns, an upper crossbeam and an upper tower column, and is divided into 24 sections from bottom to top, whereinthe lower tower columns are arranged at the 1-4# sections, the middle tower columns are arranged at the 5-15# sections, the upper tower column is arranged at the 17-24# sections, the lower crossbeamsare arranged at the 4# section, and the upper crossbeam is arranged at the 16-17# sections and connected with the upper ends of the two closed middle tower columns. The bridge tower is constructed from bottom to top, a rolling over construction process and a hydraulic formwork creeping construction process are reasonably and organically combined for construction aiming at the reality, the construction period is shortened, the overall strength of the bridge tower is improved, the mechanization degree is high, construction is safe, wind resistance is high, the concrete appearance quality is significantly improved, and a construction site is civilized and clean; and during engineering, a concrete body is high in strength, and few in surface defect, and has good performance of resisting external erosion and temperature difference change, durability and anti-cracking performance are excellent, and the long-term engineering quality is guaranteed.