82results about How to "No routine maintenance" patented technology

The invention discloses a liquid piston thermomotor and a boiler using the liquid piston thermomotor. The liquid piston thermomotor comprises a first cylinder, a second cylinder, a heater, a heat regenerator and a cooler. Liquid pistons with the bottoms communicated are arranged in the first cylinder and the second cylinder, the heater, the heat regenerator and the cooler are sequentially connected, the first cylinder is connected with the heater, and the second cylinder is connected with the cooler. The liquid piston thermomotor further comprises a power output pipe. The first end of the power output pipe is provided with a power output port and stretches into the first cylinder or is connected with the bottom of the first cylinder, so that reciprocating power can be output to the external through the second end of the power output pipe. The liquid piston thermomotor and the boiler using the liquid piston thermomotor are low in cost, small in noise and environmentally friendly and save energy.

The invention relates to air coolers, a cooling system comprising the air coolers and a temperature regulating and balancing method for a CT (Computed Tomography) scanning machine. A plurality of negative pressure fans are arranged on the back side of a condenser of each air cooler in an array form; a condensation water tank is also arranged below the condenser; a water pump is arranged in the condensation water tank; a porous spraying pipe is arranged at the upper end of the condenser and is connected with the water pump through a pipeline; the cooling system comprises a CT scanning machine, two parallel air coolers, a receiving controller, a transmitting processor, a bulb tube temperature sensor, a condenser temperature sensor, a detector temperature sensor and a displacement sensor; a cold air outlet of the auxiliary air cooler is connected into the main air cooler through a connector and is connected with a cold air outlet of the main air cooler in parallel; the cold air outlet of the auxiliary air cooler and the cold air outlet of the main air cooler are jointly communicated with an air inlet of a rack through a cold air pipeline. According to the invention, no condensation water is stored in the air coolers, so that the energy efficiency of refrigeration is improved; the cooling system directly refrigerates a CT scanning rack, so that air temperatures of the CT bulb tube and a detector assembly in the scanning rack are reduced.

The invention discloses a liquid piston hot air engine. The liquid piston hot air engine comprises a first air cylinder, a second air cylinder, a heater, a heat regenerator, a cooler and a power output pipe, wherein liquid pistons communicated with the bottoms are arranged inside the first air cylinder and the second air cylinder; the heater, the heat regenerator and the cooler are sequentially connected; the first air cylinder is connected with the heater; the second air cylinder is connected with the cooler; the cooler comprises an air-cooling pipeline exposed in air, a water-cooling pipeline connected with the air-cooling pipeline and a water jacket covering the water-cooling pipeline. The liquid piston hot air engine provided by the invention has the advantages of good cooling effect and stable working property.

The invention belongs to the technical field of musical instruments, and particularly relates to a portable vertical bamboo flute. The portable vertical bamboo flute comprises a flute head, or comprises a flute head and at least one tubular body connected with the flute head. The flue head is in the shape of a cylinder with one open end. A hollow flute head cavity is formed in the flute head. The other end of the flute head is closed and is provided with a mouthpiece which is communicated with the flute head cavity. One end of the flute head is provided with a flute head connecting ring. The outer diameter of the flute head connecting ring is smaller than that of the flute head. The flute head is formed by injection molding. The tubular body is formed by injection molding or extrusion molding. The portable vertical bamboo flute has the advantages of being stable in molding, free of cracks, free of smelliness or mildew, cleaner, more sanitary, better in toughness, higher in strength, detachable, easier to carry, elegant and attractive in appearance, short in processing period, small in manual investment, and low in selling price.

The invention discloses an axial flow magnetic suspension permanent magnet hydro-generator. The axial flow magnetic suspension permanent magnet hydro-generator comprises a volute, a rotor shaft, a left suspension magnetic bearing, a right suspension magnetic bearing, a left limiting assembly, a right limiting assembly, a hydro-generator set, a first flow guiding assembly and a second flow guiding assembly, wherein the volute is provided with a water inlet; the rotor shaft is arranged in the volute and the rotor shaft and the volute are provided with the same axis; the left suspension magnetic bearing and the right suspension magnetic bearing are arranged in the volute and the left suspension magnetic bearing, the right suspension magnetic bearing and the volute are provided with the same axis; the left limiting assembly and the right limiting assembly are arranged at the two ends of the volute correspondingly and used for axially limiting the rotor shaft; the hydro-generator set is arranged on the rotor shaft; the first flow guiding assembly is arranged in the volute and used for guiding entered water to the hydro-generator set; and the second flow guiding assembly is used for guiding water in a cavity out of the two ends of the volute. The two ends of the rotor shaft are arranged in the left suspension magnetic bearing and the right suspension magnetic bearing in a penetrating mode correspondingly and always suspended on the axis of the volute and not eccentric under the radial repulsive force action of the left suspension magnetic bearing and the right suspension magnetic bearing. The two ends of the rotor shaft abut against the left limiting assembly and the right limiting assembly correspondingly. The axial flow magnetic suspension permanent magnet hydro-generator is simple in structure and high in power generating efficiency.

The invention relates to a water purification pipe automatically sterilizing water flow. The water purification pipe comprises a pipe body and a water flow generator and is characterized in that the water flow generator is fixed on the pipe body; generator impellers are installed in the pipe body; and ultraviolet lamps are fixed on the inner wall of the pipe body and are electrically connected with the water flow generator. The water purification pipe can be installed on a water pipe, and the generator generates power by utilizing the water flow in the water pipe to supply power to the ultraviolet lamps to emit light so as to have ultraviolet light sterilization effect, thus having the effect of treatment while use. The water purification pipe has the following beneficial effects: the water purification pipe has simple structure, reasonable design and the function of sterilization while use and can be installed on the water pipe; after the water valve is opened, the water flow voluntarily starts the generator to work to provide continuous power to the ultraviolet light emitting diode (LED) to work so that the ultraviolet LED is unnecessary to be externally connected with the power supply; and the water purification pipe is suitable for any water pipe.

The invention concerns a rail crossing device (1) designed for crossing a first rail (5) embedded in a road surface (4) with a guide rail (21), embedded in the road surface (4). It comprises at least one extensible portion (32) provided in the guide rail (21) and at least one manoeuvring means (33). This manoeuvring means (33) is designed to extend and contract the extensible portion (32) in a lengthwise direction, defining a contracted position in which one end (28) of the guide rail (21) is separated from the first rail (5) to allow a vehicle or any other movable device to travel along this rail, and an extended position in which said end (28) of the guide rail (21) is moved towards the first rail (5) in order to guide a vehicle onto the guide rail (21).

The invention provides a cooling device for a variable propeller cabinet and a wind power generation unit. The cooling device for the variable propeller cabinet comprises a heat collection device and a condenser, wherein the heat collection device is arranged at the heating part of the variable propeller cabinet and is communicated with the condenser through a pipeline to form a loop; and a cooling medium is arranged in the loop, vaporizes through absorbing heat in the heat collection device, is liquefied through releasing the heat in the condenser and carries out circulation movement in the loop. According to the technical scheme provided by the invention, the problem about over temperature of the variable propeller cabinet is effectively solved, so that the wind power generation unit cannot shut down due to over temperature of the variable propeller cabinet, and the availability and the whole machine income of the wind power generation unit are increased; and the whole body of the variable propeller cabinet is ensured to be at lower temperature, so that a good working environment is provided for an electric element in a cabinet body, the reliability of the electric element is improved, and the service life of the electric element is prolonged. The cooling device has a simple structure, is convenient in installation and has higher reliability and longer service life.

The invention discloses house ventilation equipment with an effect of filtering pollutants. The house ventilation equipment comprises a structural bracket and a photovoltaic module arranged at the top of the structural bracket; the structural bracket is composed of a plurality of main skeletons arranged side by side and brackets connected between the main skeletons; rain shields are arranged above the main skeletons; circular arc outer casings are symmetrically arranged at both sides of the structural bracket; symmetrical air outlets are formed at both sides between the rain shields and the outer casings at both sides; center-pivoted valve plates and electrical push rods are arranged at the air outlets on the structural bracket; and pollutant filters are symmetrically arranged at the air outlets at both sides. The house ventilation equipment has the advantages of light structural dead weight, good ventilation effect, low local resistance, convenience for installation, simplicity for operation, good lighting effect, rain and snow prevention, no energy consumption, pollutant filtration, sterilization and the like.

The invention discloses a roof ventilation device capable of automatically purifying air. The roof ventilation device comprises an integrated frame and a photovoltaic component arranged on the top of the integrated frame, wherein the integrated framework is composed of multiple main frameworks arranged side by side and brackets among the multiple main frameworks; a rain baffle is arranged above the main frameworks; the bracket below the rain baffles is provided with a motor; two sides of the integrated frame are symmetrically provided with external arc-shaped protective plates; symmetrical vent holes are formed in positions at the lower sides of spaces between the rain baffle and the external protective plates on two sides; the parts, at the vent holes of the main frameworks are provided with valve plates; the parts, at the vent holes of the brackets below the valve plates are symmetrically provided with air purifiers; one end of each valve plate is articulated with the corresponding main framework, and the other end of each valve plate is connected with the motor which is connected with the photovoltaic component capable of supplying power to the motor. The roof ventilation device has the advantages of light structure self weight, good ventilation effect, local resistance, convenience in installation, simplicity in operation, good in daylighting effect, rain resistance and snow resistance, no energy consumption, air purification capability, less pollution and the like.

The invention discloses a sealing assembly adopting non-contact mechanical sealing and used for preventing lubricating oil leakage. The sealing assembly comprises a sealing graphite static ring and a dynamic sealing ring. A wavy spring acting the pretension force effect is arranged on the rear end face of the sealing graphite static ring, and fluid dynamic pressure grooves are additionally formed in the working end face of the dynamic sealing ring in a surrounding and evenly distributed mode. Half of the working end face on the outer side of the sealing graphite static ring is attached to a sealing dam of the dynamic sealing ring, and half of the working end face on the inner side of the sealing graphite static ring is attached to the excircle sides of the fluid dynamic pressure grooves and the sealing dam. The sealing assembly is compact in structure and easy to install and does not need to be daily maintained; under the normal working condition, no contact abrasion between the dynamic ring and the static ring exists, a large amount of heat due to friction cannot occur, thus, the service life is long, and the sealing assembly is particularly applicable to high-speed rotary sealing; and if the device is well operated, the zero-abrasion-and-zero-leakage effect can be achieved.

The invention relates to a superconducting pipe measurement and control vibration device. The technical problem that an existing superconducting pipe is low in heat exchange efficiency is solved. The superconducting pipe measurement and control vibration device comprises a superconducting pipe body with the two closed ends. A connecting conducting pipe is arranged in the superconducting pipe body and extends in the axial direction of the superconducting pipe body. The upper end of the connecting conducting pipe extends out of the superconducting pipe body. A heat conduction working medium outlet is formed in the upper end of the superconducting pipe body. A first heat exchanger is arranged at one end of the superconducting pipe body, and a second heat exchanger is arranged at the other end of the superconducting pipe body. A vibration flow guide mechanism is arranged between the connecting conducting pipe and the heat conduction working medium outlet. An expansion and shrinkage air bag is arranged on the superconducting pipe body. The superconducting pipe measurement and control vibration device has the advantages that free heat transfer between two ends can be achieved according to needs; good heat conductivity of nanoparticles in heat conduction media is kept during periodic motion, and the service life of the heat conduction media is prolonged; and the cold and head transmission distance is greatly prolonged, ultra-long-distance heat transmission is achieved, daily maintenance is not needed, and the device has wide application prospects in the aspects of industrial heat exchange and energy saving and cold and heat application in buildings.

The invention discloses a pile board basic method of an ultra high voltage electric power pylon used on soft foundation, which comprises the following seven steps: first, constructing tree root pile; second, digging foundation ditch; third, chipping the tree root pile and then building inverted cone; fourth, constructing a base plate; fifth, constructing a base pillar; sixth, backfilling the foundation ditch; and seventh, installing a tower frame; the tree root pile is connected with the base plate through the inverted cone, the base plate is connected with the base pillar, and the top of the base pillar is provided with a stone bolt which is connected with the tower frame. The method has the advantages of convenient construction, simple operation, stable and firm foundation, reliable bearing capacity, small uneven settlement and low cost. The method provides a stable and reliable foundation model for an ultra high voltage electric power pylon built on soft foundation with relativelythick soft soil horizon but hard shell horizon with certain thickness, which has the advantages of effectively utilizing the bearing potential of the hard shell horizon, reducing the excavated volumeof earthwork, lowering the construction cost and construction difficulty, and needing no daily maintenance work.

The invention discloses a method for installing a pre-discharge lightening rod. The method is characterized by including the following steps: a. assembling every part of a pre-discharge lightening rod, securing the pre-discharge lightening rod as a whole to a pedestal by tightening with bolts or welding; b. upon installing the pre-discharge lightening rod, conducting reliable welding or thermit welding on the pre-discharge lightening rod and a downlead; c. installing a ground resistance test case below the pre-discharge lightening rod, providing a lightening counter inside the ground resistance test box; d. fusing a ground rod of the pre-discharge lightening rod with a ground wire with a fire clay powder; and e. after the installation of the pre-discharge lightening rod, applying an anti-rust paint on the connecting place of every part of the pre-discharge lightening rod or the metal surfaces of every part, and conducting anti-rust processing. According to the invention, the method is advantaged over traditional lightening rod and thunder-protection systems by increased protection radius, and by providing more protection, having high safety, and strong protection for factor devices and workers.

The invention belongs to the technical field of soil heat balance test equipment, and particularly relates to a vertical temperature distribution test and underground water level measurement device for a ground source rock soil layer. The device solves the technical problems that the existing measurement device cannot detect the temperature and the water level in real time and the like. The device comprises a U-shaped pipe body, a temperature detection cavity, a water level detection cavity and a separation structure, wherein a soil temperature detection mechanism is arranged inside one side of the U-shaped pipe body, a soil water level detection mechanism is arranged inside the other side of the U-shaped pipe body, and both the soil temperature detection mechanism and the soil water level detection mechanism are connected with a display module. The device has the advantages that the changes of soil temperature and water level are displayed dynamically in real time via a digital temperature sensor and a water level monitoring device, and a data system for comprehensive analysis is formed, so that auxiliary reference data is provided for customers and environmental monitoring departments; and the device has the advantages of accuracy in measurement, large data recording information quantity, long acquisition time and the like.