53results about How to "Less material investment" patented technology

The invention relates to the technical field of heat treatment, in particular to a continuous temperature gradient heat treatment device and method for a rod-shaped material. A furnace body of the continuous temperature gradient heat treatment device includes an upper heating zone and a lower heating zone, independent temperature control is performed by using an upper heating power source and a lower heating power source correspondingly, the upper heating zone and the lower heating zone are both closed heating zones, closed heat insulation boards can prevent heat loss, the precise control overthe temperature of the upper heating zone and the lower heating zone is ensured, and therefore the precise control over the temperature gradient of a rod-shaped material standard sample section is realized. The continuous temperature gradient heat treatment device includes vacuuming equipment to allow the rod-shaped material to conduct heat transfer under vacuum to avoid heat convection; an annular radiation screen is arranged between the upper heating zone and the lower heating zone, and the lateral heat dissipation of the standard sample section is suppressed, and the heat transfer can transfer in the longitudinal direction; the rod-shaped material does not in contact with the ring-shaped radiation screen, and heat conduction is avoided; and three aspects work together to enable the rod-shaped material to transfer heat in one dimension in the axial direction, and it is ensured that the surface and center temperature of the rod-shaped material are consistent.

The invention relates to an experimental device for supersaturated total dissolved gas of the downstream water body of discharging water of a dam. The device comprises a water column, valves, a flowmeter, an air compressor, a manometer, a total dissolved gas tester and a stirrer. A first valve and the flowmeter are respectively connected with the bottom of the water column by a pipeline, the outlet of the air compressor is communicated with the flowmeter by a second valve through one end of a three-way pipe, and is communicated with the atmosphere by a third valve through the other end of thethree-way pipe; the scale position on the wall of the water column is connected with a latex pipe which is connected with the manometer; the total dissolved gas tester and the stirrer are independent, and the total dissolved gas tester is placed into the water column when measuring. The device of the invention can measure and control main physical parameters which influence the generation and release of supersaturated total dissolved gas such as water body pressure, aerification quantity, water depth and turbulent strength, so as to carry out quantitative analysis to the total dissolved gas, and therefore the device of the invention has important promoting effects for the protection of river aquatic ecological environment and the establishment of ecology friendly hydraulic engineering.

The invention relates to an experimental device for generating over-saturated general dissolved gas by high-speed jetting air doping, comprising a water column, a flowmeter, an air compressor, a general dissolved gas tester, a first valve, a second valve, a third valve, a water pump, a water flow nozzle and a gas nozzle, wherein the air compressor is connected with the flowmeter connected with the gas nozzle through the second valve, and the gas nozzle is arranged in the water column; one end of the water pump is connected with the bottom of the water column, the other end of the water pump is connected with the water flow nozzle through the first valve, and the water flow nozzle is arranged in the water column; the third valve is installed at the bottom of the water column; and the general dissolved gas tester is inserted to the water column when testing. The experimental device can realize the control on the measurement of main physical conditions affecting the generation of the over-saturated general dissolved gas, such as the jetting flow speed of a water body, air-doped amount, pressure, water depth and the like, thereby achieving the purpose of quantitatively researching theair-doped jetting flow of the over-saturated general dissolved gas; and the experimental device has the important promoting function on protecting the aquatic ecosystem of rivers and establishing environmental-friendly hydraulic engineering.

The invention belongs to construction and assembling equipment for hydraulic brackets of mines, and particularly relates to a hydraulic travelling crane and an underground hydraulic bracket assembling system applying the same. The hydraulic travelling crane comprises a fixed bracket, a sliding bracket and a hoisting unit, wherein the sliding bracket is arranged on the fixed bracket in a sliding way; the hoisting unit is arranged on the sliding bracket and comprises a sling, a movable pulley and a fixed pulley; the movable pulley is arranged in a reciprocating way; the fixed pulley is fixedly arranged or fixedly arranged in an adjustable manner relative to the sliding bracket; the upper end of the sling is fixedly connected with the sliding bracket; the sling bypasses the movable pulley and the fixed pulley in an S shape; and the lower end of the sling is used for connecting a to-be-hoisted component. The equipment can improve the work efficiency, save salary and material cost, increase the economic benefit, simplify the construction procedure, improve the construction efficiency, accelerate the construction progress and greatly improve the construction safety.

The invention relates to a method for connecting AlON ceramics by using AlON powder as a raw material, belonging to the field of transparent ceramic material preparation. A method for connecting AlON ceramics using AlON powder as a raw material. The mixed powder of the intermediate layer is evenly arranged between the AlON ceramic blocks and then sintered to realize the connection between the AlON ceramic blocks. The mixed powder is made of AlON powder Composed of sintering aid powder, the sintering conditions are: under the unidirectional pressure of 0.01MPa perpendicular to the plane to be connected, the temperature is raised to the holding temperature at a heating rate of 30°C / min, and then the holding temperature is the temperature for preparing the to-be-connected The sintering temperature of the AlON ceramic block is ±30° C., and the holding time is not longer than the sintering holding time for preparing the AlON ceramic block to be connected. The connecting piece obtained by using the method of the invention has high strength and light transmittance. The method is simple to operate and easy to realize industrial scale-up production.

The present invention relates to closure engineering technology and is especially method of preventing cut-off materail from being washed away. Steel reinforced concrete framework and concrete tetrahedron connected together with steel cable are hoisted, conveyed and unloaded into water before banquette repeatedly to form stable underwater banquette. The concrete tetrahedron with large weight and the framework with high stability make the connected structure incapable of being washed away, and many connected structure can form stable underwater banquette and prevent cut-off banquette from collapsing.