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953results about How to "Extended path" patented technology

Road tunnel intercommunication type longitudinal ventilation mode

The invention discloses a road tunnel intercommunication type longitudinal ventilation mode. The road tunnel intercommunication type longitudinal ventilation mode is characterized in that: an underground fan room and a connection ventilation duct are arranged at an appropriate position between two adjacent tunnels; the underground fan rooms are used for installing ventilation fans; the connection ventilation ducts are used for connecting the air flow of two tunnels; the automobile tail gas, which is generated in sections from the underground fan rooms to outlets, of pure uphill tunnels or uphill-major tunnels (uphill tunnels for short) is diluted by using cleaner air in pure downhill tunnels or downhill-major tunnels (downhill tunnels for short); and the polluted air, which is generated in sections from inlets to the underground fan rooms, of the uphill tunnels is discharged through the outlets of the downhill tunnels. By adoption of the road tunnel intercommunication type longitudinal ventilation mode, ventilation equipment can be reduced, ventilation shafts, inclined shafts or electrostatic dust removal stations are eliminated, and ventilation power consumption in daily operation is low, so that civil engineering cost and operation cost are reduced.
Owner:SHANGHAI TONGYAN CIVIL ENGINEERING TECHNOLOGY CORP LTD

Heterogeneous gate tunneling transistor and forming method thereof

The invention provides a structure of a heterogeneous gate tunneling transistor of an under-gate process and a forming method of the heterogeneous gate tunneling transistor. The heterogeneous gate tunneling transistor comprises a substrate, a channel region, a source region, a drain region and a gate stack, wherein the channel region is formed in the substrate; the source region and the drain region are arranged on the two sides of the channel region; the doping types of the source region and the drain region are reverse; the gate stack is formed on the channel region and comprises a gate dielectric layer, a first gate electrode, a second gate electrode, a first vacuum side wall and a second vacuum side wall; the first gate electrode and the second gate electrode are formed on the gate dielectric layer and have different work functions; and the first vacuum side wall and the second vacuum side wall are formed on the two sides of the first gate electrode and the second gate electrode. Since the vacuum side wall from the gate to the drain region is introduced, the control of the gate over the drain region is weakened, and the gate-drain capacitance is reduced; a certain distance which can be accurately controlled exists between the gate stack and the drain region of a device, so that a tunneling potential barrier path is increased, and a double-pole window is expanded; and the energy band distribution of the channel region is modulated by a work function structure of the transverse heterogeneous gate, so that the sub-threshold slope of a transistor is obviously reduced, the driving current is increased and the performance of the device is enhanced.
Owner:TSINGHUA UNIV

Waste gas purifying device applicable to incinerator

The invention discloses a waste gas purifying device applicable to an incinerator. The waste gas purifying device comprises an incinerator waste gas purifying device body, and a waste gas inlet pipe communicated with the exhaust port of an incinerator body, wherein the tail end of the waste gas inlet pipe is communicated with a dust catcher; an upper dust removal baffle and a lower dust removal baffle are arranged in the dust catcher; the upper dust removal baffle and the lower dust removal baffle are arranged at intervals; the tail end of the dust catcher is communicated with a waste gas exhaust pipe; the tail end of the waste gas exhaust pipe is communicated with an exhaust chimney; a left supporting plate and a right supporting plate which are longitudinally staggered are arranged on the inner side wall of the exhaust chimney; a flue gas pre-spray heat sink is arranged on the left supporting plate; a flue gas pre-spray desulfurizer is arranged on the right supporting plate; a waste gas purifying tank is formed at the bottom of the exhaust chimney; a deslagging door is arranged at the bottom of the dust catcher; a pressure release valve is arranged at the top of the dust catcher. The waste gas purifying device can filter poisonous gas, heavy metal and dust produced during the combustion of fire coal, effectively solves the problem of waste gas pollution, and avoids the risk of explosion caused by overlarge air pressure inside the device.
Owner:广州拉斯卡工程技术有限公司
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