42results about How to "Head height" patented technology

The invention relates to a low temperature air supply air conditioner device for naval vessels and a control method thereof. The low temperature air supply air conditioner device comprises an air conditioner, a fresh and return air mixing box which is provided with a primary return air port and a fresh air port, and a PLC control system. The primary return air port is provided with a primary return air valve and a first temperature and humidity sensor; the fresh air is provided with a fresh air valve; the air conditioner is provided wit a secondary return air port; the secondary return air port is provided with a secondary return air valve and a second temperature and humidity sensor; an exhaust box of the air conditioner is provided with a third temperature and humidity sensor; and the first return air valve, the second return air valve, the first temperature and humidity sensor, the second temperature and humidity sensor, the third temperature and humidity sensor and the fresh air valve are all connected with the PLC control system. In the invention, the shell of the air conditioner is provided with a primary air port, the secondary return air port and the fresh air port; a plurality of temperature and humidity sensors are matched with a plurality of air valves to ensure the low temperature air supplying and the temperature control accuracy, exactly control the water supply temperature and effectively control air supply condensation. The device is simple and compact in structure, high in service accuracy of low temperature air, and high in safety. The device is fit for naval vessels and submarines and the like.

The invention provides a cold plate performance test device which is characterized by comprising a thermometer (4), a pressure meter (5), a flowmeter (6), a filter (7), a heat radiator (8), a flow valve (10), a water pump (11), a water tank (13) and a cold plate (1) which are sequentially connected together in series through a pipeline, wherein a fan (9) is fixed together with the heat radiator (8) through a bracket; an electric heater (12) is arranged on the side wall of the water tank (13) in a threaded connection manner; a heating resistance module (2) and a wall temperature sensor (3) are fixed on the surface of the cold plate (1) through bolts; and a control unit (14) is connected with the heating resistance module (2), the wall temperature sensor (3), the thermometer (4), the pressure meter (5), the flowmeter (6), the fan (9), the water pump (11) and the electric heater (12) through a conductive wire, so that a control part of the device is formed. The cold plate performance test device disclosed by the invention has the advantages of wide measurement range, small measurement error and high measurement precision.

The invention relates to a method for recovering nylon from a nylon-containing material by contacting the nylon-containing material with an alkanol-containing solvent at elevated temperature and at a pressure higher than the equilibrium pressure of the alkanol-containing solvent at the elevated temperature, thereby dissolving the nylon in the alkanol-containing solvent, removing the alkanol-containing solvent containing dissolved nylon from any undissolved solids, and decreasing the temperature of the alkanol-containing solvent containing dissolved nylon to precipitate the dissolved nylon.

A hydroelectric system comprising a support member, a rotational torque converter, a drive member being disposed at one end of a support arm, a water driven mechanism in rotational communication with the drive member, wherein the support arm can be pivotally adjusted by a retraction mechanism are disclosed. A spillway deflector comprising a spillway deflector wedge, a deflector anchor, and a flat portion extending between the deflector anchor and the deflector wedge are disclosed.

A system and method that controls the evacuation of fluid from a sea vessel and configured to prevent turning off the bilge pump during periods of water sloshing. The invention provides a control unit that is adaptable to any size vessel or bilge pump based on a learned experience gained by sensory information.

A system and method that controls the evacuation of fluid from a sea vessel and configured to prevent turning off the bilge pump during periods of water sloshing. The invention provides a control unit that is adaptable to any size vessel or bilge pump based on a learned experience gained by sensory information.

The invention relates to a runner device and mold filling method of a centrifugal casting thin-wall cartridge receiver casting. The runner device comprises a disc-shaped transverse runner, a straightrunner vertically adheres to the transverse runner, and an annular inner runner and an annular outer runner further adhere to the transverse runner; the inner runner and the outer runner surround thearea beyond the straight runner; and the inner runner and the outer runner are connected through a plurality of lap joint runners. The mold filling method comprises the steps that after the runner device is prepared, molten metal is poured through the straight runner, the inner runner and the outer runner, so that the molten metal reaches the joint of the inner runner and the transverse runner atthe same time and is gathered. By means of the technical scheme, the cross section area of the lap joint runners is limited, so that the pressure head flowing through the molten metal is increased, and a foundation is laid for enabling the molten metal to reach the junction of the inner runner and the transverse runner at the same time and to be gathered, the purpose of avoiding cold separation defects of the casting is achieved, welding repairing and repairing processes for the casting in the later period are avoided, the casting technology is simplified, and the product quality is improved.

An evaporative pattern casting process includes forming a mold by burying a pattern made of resin foam in casting sand, pouring molten metal into the mold, and evaporating the pattern with the molten metal and thereby casting a product. In the evaporative pattern casting process, casting time during founding is set according to a modulus (pattern volume÷pattern surface area) of the pattern. Accordingly, the casting time in the evaporative pattern casting process is accurately set with high precision.

A turbo generator (1), including a stator and a rotor (2), has a rotating bell type exciter (3) connected to one end of the rotor (2) and the exciter (3) being equipped with at least one cooler (7). An axial duct (11) with a guide (12) is provided between a cylindrical housing (13) and the outer circumference of the bell type exciter (3). Thus, drawbacks of the prior art are mitigated and the efficiency of the bell type exciter is increased by recovering the dynamic energy of the cooling fluid flow.

The invention relates to an ice nano-grade indentation sample bench and a related experiment method. The ice nano-grade indentation sample bench belongs to the technical field of micro-scale mechanical performance testing. An accommodation bench I (1) used for accommodating a cooling material is arranged on the bench body of the sample bench. A layer is insulation material (2) is arranged in the accommodation tank I (1). An elevation bench (4) is arranged in the accommodation tank I (1). An accommodation tank II (2) used for accommodating an ice material is arranged on the elevation bench (4). An insulation layer is arranged between an indenter head indenting part and a chucking part. The chucking part matches a fixture of a nano-indenter head. According to the invention, the temperature of the material to be tested is controlled by using the cooling material. The entire experiment has the advantages of simple material preparation, low cost, and easy realization, such that the entire experiment process is optimized.

The invention discloses a centrifugal casting process for a minor-caliber ultra-thin-wall microalloy furnace tube. The tapping temperature and the casting temperature of the casting molten steel, the temperature of a mould cylinder and the like are strictly controlled, so that the cast minor-caliber ultra-thin-wall microalloy furnace tube meets the design requirements and increases the yield thereof greatly. The centrifugal casting process can further reduce the wall thickness and the tube diameter of the furnace tube and reduce the manufacturing cost of the furnace tube, wherein the minimum wall thickness is 5 mm and the minimum tube diameter is 50 mm. The outer surface of the mould cylinder is divided into three segments for carrying out temperature control, so that on one hand, the drying speed of the coating is increased, the exhaust amount of the coating is reduced and the exhaust speed of the coating in the mould cylinder can be increased, and on the other hand, the temperature difference between the cast segment and the tail segment of the mould cylinder is reduced, thus the stress and deformation of the furnace tube during the casting cooling are reduced.

The invention provides a centrifugal fan device of a large-discharge-capacity oilless air compressor of a rail transit and a mounting method thereof. The centrifugal fan device comprises a volute and an impeller arranged in the volute, wherein the impeller comprises a front annular disc, a rear annular disc and multiple blades uniformly arranged at the outer periphery between the front annular disc and the rear annular disc; the center hole of the rear annular disc is provided with a fan flange used for connecting the impeller with a motor shaft; a tensioning sleeve is arranged between the fan flange and the motor shaft; the included angle between a tangent line of an outside spur line of the blade and the tangent line in a peripheral direction is less than 13 degrees. The centrifugal fan device is capable of shortening the axial size of installation space needed for a cooling fan, realizing an integrated design of an air supply device in the rail transit, greatly enhancing the compact type of the air supply device, supplying sufficient cooling air amount to the oilless air compressor in the rail transit by use of a limited space and completely meeting the cooling requirement of the oilless air compressor.

The invention discloses an air purification integrated device of an air conditioner. The air purification integrated device comprises an air purification device fixedly connected to the indoor air conditioner. The device mainly comprises two small draught fans and air purification filter elements. The indoor air conditioner mainly serves as a temperature control device, the temperature control device is arranged in the indoor air conditioner, and the temperature control device comprises a circulating pipe, a pipeline route, a small compressor and the like. A compression solution is contained in the circulating pipe. When the air purification device automatically runs, the draught fans rotate to drive air to enter the purification device from a purification device air opening, and in the period, the air passes through the specially-made air purification filter elements, the air is filtered and purified after passing through the filter elements. The purified air continuously enters thetemperature control device downwards. The purified air makes contact with a backflow pipe of the temperature control device, and the air is heated or cooled and then blown to indoor space. The deviceis simple in structure and convenient to mount. The indoor air is purified, the purified air enters the temperature control device, and meanwhile the service life of the air conditioner is also prolonged.

The invention relates to a flue gas recirculating system for low-nitrogen combustion and slag-bonding prevention of a W-flame boiler. The flue gas recycling system comprises a boiler smoke exhaustingopening, a cyclone dust collector and a recirculating flue gas distributor, the boiler smoke exhausting opening communicates with a gas inlet of the cyclone dust collector, the cyclone dust collectoris connected with a recirculating fan through a boiler smoke pipeline, the recirculating fan is connected with the recirculating flue gas distributor, the recirculating flue gas distributor comprisesan inner annular channel and an outer annular channel, the inner annular channel is formed in the outer annular channel, a plurality of hydrocyclones are arranged on the outer annular channel, and anelectric regulating valve is arranged on the inner annular channel. High-temperature flue gas of the system is taken from the lower part of an economizer at the tail of the boiler, the temperature is10 DEG C-20 DEG C higher than the temperature of hot primary air and hot secondary air at an outlet of an air preheater, the flue gas is introduced into an under-arch area of a hearth of the boiler, the amount of the flue gas in the boiler can be increased, the main steam temperature and the reheat steam temperature are increased, the NOx generation amount is controlled, slag-bonding of a water-cooling wall of the under-arch area of the boiler is prevented, and the flue gas recirculating rate is controlled at 10%-20%.

The invention relates to an efficient axial centrifugal fan. The efficient axial centrifugal fan comprises an upper sealing ring, a lower sealing ring, an air inlet duct, an impeller, a front-end oilfilling pipe, a motor, a rear-end oil filling pipe, an air cylinder, a connecting box and a ground lead. An impeller of the fan is of a backward type centrifugal impeller structure. A blade is of a straight plate blade profile structure. A front wheel disc, a rear wheel disc and a wheel core are connected through self-plugging rivets, the impeller flatness and end jump of the fan are better by theadoption of a riveting manner, and the impeller is more attractive in appearance; and a pneumatic structure is more optimized, the weight of the fan is reduced on the premise of guaranteeing the pneumatic performance and the structure performance of the fan, and the process is simple. The excellent pneumatic structure of the impeller and the pneumatic structure of the air cylinder are optimally matched so that the efficiency of the fan can be improved greatly. A guide vane of the fan is in a front end inclined form, the non-uniform airflow velocity gradient can be well treated, the vibrationproblem is solved, and the welding strength of the fan is improved; and lubricating grease is regularly added to a motor bearing by the adoption of the oil pipes for both the front portion and the rear portion of the motor, the lubricating effect of the bearing is guaranteed, the reliability of the fan is improved, and the service life of the fan is prolonged.

In general, the present invention relates to methods and apparatuses that achieve high gas flow rates through the use of an electrostatic pump. According to some aspects, the present invention relates to additional, auxiliary electrodes that generate increased ion current at lower voltages, which leads to greater pumping power than a corona wind discharge. According to further aspects, the invention provides for a directional emission of the ions. This eliminates the back flow of ions and improves the electro-fluid power conversion efficiency and pumping performance. According to yet further aspects, the invention enables the electrodes to be fabricated directly on a dielectric substrate, making the system mechanically rugged and easily fabricated.

The invention belongs to the field of dust removal and denitration, and particularly relates to dust removal and denitration equipment and a method for transforming the same. The dust removal and denitration equipment comprises a high-temperature dust remover, an ammonia spray system and an SCR (selective catalytic reduction) reactor. An outlet of the high-temperature dust remover is connected with an inlet of the SCR reactor, and the ammonia spray system is arranged at the front of the high-temperature dust remover or is arranged between the high-temperature dust remover and the SCR reactor.The dust removal and denitration equipment and the method for transforming the dust removal and denitration equipment have the advantages that the problems of vulnerability to abrasion, poisoning andblocking of SCR catalysts in high-concentration dust environments can be solved, the problems of abrasion of waste heat boilers and dust accumulation of pipe walls can be solved, the denitration efficiency can be improved, land occupation of the dust removal and denitration equipment can be economized, the heat exchange efficiency can be greatly improved, and the service lives of boilers can be greatly prolonged.