670results about How to "Little resistance loss" patented technology

Reactor internals in a lower reactor comprise a reactor pressure vessel(1), a reactor core provided in the reactor pressure vessel(1), a supporting lower plate(2) of the reactor core fixed to the bottom of the reactor core and a flow distribution device(3) provided with several circular openings. The flow distribution device(3) comprises an upper distribution plate, a middle distribution ring fixedly connected to the bottom of the upper distribution plate along the periphery direction, a lower distribution plate fixedly connected to the bottom of the middle distribution ring along the periphery direction. Several evaginable protruding sections are provided on the top of the upper distribution ring. The evaginable protruding sections of the upper distribution ring are fixedly connected to the supporting lower plate (2) of the reactor core. The reactor internals in a lower reactor have a simple structure, an even flow distribution and a small resistance coefficient, and are easy to replace and repair.

A power transmission for a motor vehicle includes an input, first and second input shafts, a layshaft, drive elements connecting the input shafts to the output and layshaft, couplers, a first clutch for connecting and disconnecting the input and the first input shaft, and a second clutch for connecting and disconnecting the input and the second input shaft. A first torque path driveably connects the first input shaft to the layshaft. A second torque path driveably connects the second input shaft to the layshaft. A third torque path driveably connects the layshaft and output. A bridge torque path driveably connects the first input shaft and the output.

A solar cell module includes a photovoltaic element, a light receiving surface side protective member disposed above a light receiving surface of the photovoltaic element, and a back surface side protective member disposed above a back surface opposite to the light receiving surface side of the photovoltaic element. The photovoltaic element includes an indium oxide layer formed on a surface facing the back surface side protective member and another indium oxide layer formed on a surface facing the light receiving surface side protective member. An arithmetic mean roughness (Ra) on a surface of the indium oxide layer on the back surface of the photovoltaic element is larger than an arithmetic mean roughness (Ra) on the light receiving surface of the photovoltaic element.

The invention relates to a rapid gas hybrid reactor for high temperature cracking and an application thereof. Two types of gases are transported by a concentric bilayer circular tube, one type of the gas is transported by an inner tube, the other type of the gas is transported by a tube annular space between an outer tube and the inner tube, and the two types of the gases can be subject to mutualtemperature regulation in the transportation process, the gases are pre-tempered; and one type of the gas is transported to the inner turbine of a mixing nozzle by the inner tube, the other type of the gas is transported to the annular turbine of the mixing nozzle by the tube annular space between the outer tube and the inner tube, the rotation direction of the turbine blades of the inner turbineand the annular turbine are opposite so as to lead the rotation direction of the two types of the gases to be opposite, thus generating a huge velocity difference to cause large shear force, intensive turbulence, small resistance loss and high hybrid speed, and enabling the two types of the gases to be evenly mixed instantly and then enter in a reaction tube for reaction immediately. The gases are mixed in the mixing nozzle and directly enter the reactor for reaction, thus a mixing section is not required to be additionally arranged.

The invention discloses an energy-saving air-conditioning/hot water triple-supply system, comprising a compressor (1), a hot water heat exchanger (4), an air heat exchanger (6), an air conditioning heat exchanger (10) and other parts; using main components of a heat pump system, the system adopts a structure with three heat exchangers interconnected in a mixed manner and double four-way reversing valves and has four working modes including refrigeration and water heating, water heating, heating and water heating, and defrosting, thus the triple supply of refrigeration, heating and clean hot water can be realized; the system has high heat exchange efficiency and simultaneously enhances energy efficiency ratio of system as well; by adopting the heat pipe exchangers, the system solves the problem that the heat exchanger is liable to leakage so as to pollute water, and overcomes the deficiency of large resistance when a plurality of heat exchangers are connected with each other in series.

The invention discloses a coal mine underground self-suction abrasive jet flow drill bit which can utilize the combination of abrasive jet flow guiding smash and mechanical smash to increase the drilling speed during the coal mine underground drilling operation. The self-suction abrasive jet flow drill bit comprises an abrasive jet flow nozzle, a self-suction device and a main smashing structure, wherein the self-suction device comprises a cavity, a filter screen, a support ring positioned inside the cavity and an inlet nozzle positioned at the rear end of the cavity. According to the invention, coal debris generated in the drilling process can be sifted by the filter screen, then enters the inside of the cavity of the self-suction device, and is fully mixed with a water jet flow to form an abrasive jet flow, the abrasive jet flow is jetted from the abrasive jet flow nozzle to perform guiding smash on coal and rock mass; the main smashing structure of the drill bit comprises three cutting pieces and three main smashing teeth, and a finished drill-hole can be formed under the mechanical smash action of the main smashing structure. The invention further relates to a method for utilizing the drill bit to drill in an underground coal mine. The drill bit has high drilling speed and little abrasion, and can be widely applied to coal mine underground drilling operation.

The invention discloses a plenum chamber capable of achieving balanced ventilation, comprising a chamber body, wherein an air inlet hole is formed in the lateral wall of the chamber body, a pore plate and a clapboard are arranged in the chamber body, a plurality of orifices are formed in the pore plate, the pore plate and the clapboard divide the internal space of the chamber body into three areas, including an air inlet area, a first turbulence area and a second turbulence area; the air inlet hole is formed in the lateral wall of the air inlet area, a vertical air outlet hole is formed in the lateral wall of the first turbulence area, a horizontal air outlet hole is formed in the lateral wall of the second turbulence area; and air enters the air inlet area via the air inlet hole, respectively enters the first turbulence area and the second turbulence are via the pore plate and are respectively sent out from the vertical air outlet hole and the horizontal air outlet hole. According to the invention, wall-attached jetting uniformity in the horizontal direction and the vertical direction can be improved, the capability of outlet airflow in mixing with indoor pollution (hot air) is weakened, and air sending jetting distance is increased, and blowing feeling of sending airflow to persons is reduced.

The invention discloses an oil smoke filtering device. The oil smoke filtering device comprise at least two vertically arranged filtering channels; the filtering channels are arranged in parallel along the transverse direction; each filtering channel is composed of adjacent vertically arranged separating plates, and possesses at least on zigzag part, so that at least one filtering channel is a zigzag channel; and oil smoke blocking parts are transversely arranged in the filtering channels. Advantages are that: filtering channel area and contact area with oil smoke of the zigzag channels are relatively large, and fluidity of grease obtained via filtering is high; resistance loss of the transverse oil smoke blocking parts arranged in the filtering channels is small, collision filtering effect on particles with different size is excellent, oil smoke separation and filtering effect can be improved effectively without obvious increasing of windage resistance, and excellent oil smoke separation efficiency is obtained via combination with the zigzag channels; the oil smoke filtering device is simple in the whole structure, is convenient for maintenance, and is suitable for oil smoke filtering of a plurality of smoke exhaust ventilators.

The invention discloses an extrusion expansion device for removing fibers in materials in the feed processing device field, which comprises an extrusion cavity, wherein a screw is arranged in the extruding cavity, an outlet end of the extrusion cavity is provided with a die plate frame, the die plate frame is provided with a discharge die plate, the discharge die plate is provided with a plurality of die holes which run through the discharge die plate, the die holes are communicated with the extrusion cavity, and a blade is arranged outside the discharge die plate; a fiber hooking die plate is arranged in a channel between the discharge die plate and the extrusion cavity and is provided with a plurality of fiber hooking holes, and one side, which faces toward the extrusion cavity, of each of the fiber hooking holes is provided with an inner chamfer angle. When the device works, the fiber hooking die plate can hook the fibers to ensure that the fiber amount of a material passing through the fiber hooking die plate is reduced, material particles formed after the material passes through the fiber hooking die plate and is cut by the blade have smooth and beautiful surfaces, the blade is difficult to hook the fibers, and the abrasion of the blade can be reduced. The device is particularly suitable to be used for the expansion processing of aquatic feed with large fiber amount.

A signal line is drawn from a generally middle point of the antenna coil, and a capacitance-variable capacitors are connected at both sides of the antenna coil. This structure realizes a circuit in which a series resonance circuit composed of an antenna coil and a capacitor and an another series resonance circuit composed of an another antenna coil and an another capacitor are connected in parallel to each other across the generally middle point of the antenna coil to which the signal line is connected. Through the control of the resonance frequencies of the series resonance circuits, the parallel resonance frequency of the whole antenna is tuned to a desired frequency, and the resonance characteristic in which the impedance is matched to a specific value, e.g., 50 Ω, can be achieved.

The invention discloses an energy-saving control device and method for a closed cooling circulation system. The energy-saving control device comprises a controller, frequency converters, water supply pipe temperature sensors, a water return pipe temperature sensor, an outdoor air temperature and humidity sensor, a water supply pipe pressure sensor, a water return pipe pressure sensor and water pump flowmeters, wherein the frequency converters, the water supply pipe temperature sensors, the water return pipe temperature sensor, the outdoor air temperature and humidity sensor, the water supply pipe pressure sensor, the water return pipe pressure sensor and the water pump flowmeters are connected with the controller. The energy-saving control method includes the steps that (1), the flow of cooling water pumps is adjusted and maintained through PID; (2), the operation number of the cooling water pumps is dynamically adjusted; (3), a cooling water supply temperature setting value is dynamically adjusted, and the rotating speed of a closed type cooling tower fan is controlled. Information of operation parameters of the closed cooling circulation system is collected dynamically, the temperature of the cooling water can be controlled stably, the heat dissipating capacity of heat exchange equipment at the tail end is stable, and energy consumption of the closed cooling circulation system is effectively reduced.

The invention discloses a flowing boiling micro-miniature heat exchanger, which comprises a heat exchanger casing, a heat exchange structure passage, an inlet passage and an outlet passage, wherein the heat exchange structure passage is arranged in the heat exchanger casing; and the inlet passage and the outlet passage are arranged at the two ends of the heat exchange structure passage. The flowing boiling micro-miniature heat exchanger is characterized in that the inlet passage consists of a condensing medium input opening, a flow storage pool and an inlet flow division passage; the flow storage pool is connected between the condensing medium input opening and the inlet flow division passage; the outlet passage consists of a condensing medium output opening and an outlet flow division passage; a micro rib column group and support columns are arranged in the heat exchange structure passage; the micro rib column group consists of micro rib columns; the cross section dimension of the micro rib columns conforms to the fractal Brownian motion features; the micro rib columns are in planar distribution; the height of the micro rib columns meets the normal distribution; and the support columns are distributed in the center of the micro rib column group in an array mode. The flowing boiling micro-miniature heat exchanger has the advantages that the heat transfer efficiency is high; the flowing resistance loss is small; the surface temperature of the heat exchanger is uniform; the work is stable; and the service life is long.

Provided is a demister for a desulfurization tower. The demister is characterized by comprising a supporting ring, a supporting shaft located in the middle of the supporting ring, and a plurality of blades which are distributed around the supporting shaft and fixed between the supporting ring and the supporting shaft. Each blade comprises two blade units connected together and a hook blade body bent towards the lower portion of the outer side, the sections of the blade units are in an upwards-protruding arc shape, and each hook blade body is connected below one of the two blade units of each blade. The blades are inclined upwards from the blade units connected with the hook blade bodies to the other blade units. Compared with the prior art, the demister has the advantages that large-particle solids and small-particle solids can be removed at the same time, meanwhile, resistance losses can be reduced, the number of flushing devices can be reduced, the demisting effect of the desulfurization tower can be improved, and the investment cost and running cost of the desulfurization tower are reduced.

The invention discloses a vortex combined SCR static mixer, comprising a tip body, a plurality of arc flow deflectors with an axis where the tip body is located as a center axis, and a plurality of baffle plates uniformly distributed, with the axis as a center axis, on the lower ends of the flow deflectors, wherein the baffle plates allows flue gas to gather at an ammonia gas nozzle; the arc flow deflectors allow flue gas and ammonia gas to generate transverse speed and to spirally flow upward; and gas flow located at a central area and not directly influenced by the arc flow deflectors staggerly flows relative to peripheral gas flow after bumping onto the tip body, so flue gas and ammonia gas are mixed. The vortex combined SCR static mixer provided by the invention is beneficial for promoting diffusion of ammonia gas, greatly improves mixing effect, enhances the mol ratio uniformity of ammonia and nitrogen and exerts good effect on optimization and synergism of a SCR denitration system.

The invention provides a single-tower dual-cycle wet flue gas desulfurization tower and a tube groove type liquid collection device, and belongs to the technical field of flue gas desulfurization. The desulfurization tower comprises a tower body, the bottom of the tower body is provided with a flue gas inlet, the top of the tower body is provided with a flue gas outlet, an upper spray layer and a lower spray layer are arranged on the portion, between the flue gas inlet and the flue gas outlet, inside the tower body, and the tube groove type liquid collection device is installed between the upper spray layer and the lower spray layer and separates slurry of the upper spray layer from slurry of the lower spray layer; the tube groove type liquid collection device comprises multiple liquid collection tube grooves which are formed for multiple layers in the longitudinal direction, the two adjacent layers of the liquid collection tube grooves are arranged in a staggered mode, the liquid collection tube grooves are arranged in an inclined mode, and the lower ends of the liquid collection tube grooves are communicated with a diversion groove. According to the single-tower dual-cycle wet flue gas desulfurization tower and the tube groove type liquid collection device, the flow field is uniformly distributed, the resistance loss of the structural design is small, and the contact effect between the gas and liquid is good. Therefore, the slurry of the upper spray layer can be collected, the system resistance can be reduced, and the desulphurization efficiency is improved.

The invention relates to a differential pressure air speed detection and control device, which comprises an air-conveying de-dusting branch pipe, an electric (pneumatic) adjustment butterfly valve, a cut tobacco collecting box of a cigarette making machine, a cut tobacco conveying pipeline and a differential pressure flowmeter, and is characterized by also comprising a split type orifice flowmeter arranged on the air-conveying de-dusting branch pipe, wherein the differential pressure flowmeter is a split type venturi flowmeter and is arranged on the cut tobacco conveying pipeline, and the speed measuring pipe diameter of the venturi flowmeter gradually becomes small and then gradually becomes large. The invention eliminates the phenomena of cut tobacco retention, adhesion and blockage, is more suitable for detection of cut tobacco material flow in the cut tobacco conveying pipeline, and can maintain long-term operation of high-precision detection to ensure the effective operating ratio and reliability of a system.

The invention discloses a blade tip coupled cooling experiment system for turbine blades of a gas turbine. The blade tip coupled cooling experiment system comprises a high temperature main flow channel, a U-shaped cooling channel, an experimental test section and a data acquisition and analysis system, wherein the high temperature main flow channel comprises a temperature control box, and a main flow gas pump, a main flow gas flow stabilization tank, a main flow gas heater and a main flow three-way electromagnetic valve which are sequentially connected; the U-shaped cooling channel comprises acold flow outlet vacuum pump, and a cold flow inlet gas pump, a cooling gas flow stabilization tank, a cooling gas heater and a cold flow inlet three-way electromagnetic valve which are sequentiallyconnected; the experimental test section comprises a U-shaped cooling channel, a high-temperature main flow channel and a blade tip plate with a through hole in the center, and an embedded plate is embedded in the through hole; the data acquisition and analysis system comprises a cooling channel infrared thermal imager, a main flow channel infrared thermal imager, a CCD camera, and a data acquisition and analysis computer connected with the cooling channel infrared thermal imager, the main flow channel infrared thermal imager and the CCD camera; and an outlet of the main flow three-way electromagnetic valve is communicated to an inlet of the high temperature main flow channel, and an outlet of the cold flow inlet three-way electromagnetic valve is communicated to an inlet of the U-shaped cooling channel.