60 results about "Atmospheric pressure" patented technology

The invention relates to a method to separate temperate coal race component based on the extract and the stripping, which belongs to the separating method of the coal race component. Join the component solvent into the coal sample, agitate it and obtain the extract liquid-solid mixture; Carries on the liquid-solid separation to the extract liquid-solid mixture, obtains the extracted liquid and the gathering excess separately; To gathers the excess water used wash, then the vacuum drying, obtains gathers -odd coal; Joins the stripping medicinal preparation in the extracted liquid, the agitation, obtains the stripping liquid-solid mixture and carries on the liquid-solid separation to it, obtains the solid matter and the wet goods; To solid matter water used wash, dry, obtains the refined coal; The wet goods are two laminations: To a lamination takes off resolve A with the atmospheric pressure distillation, carries on the stripping again to the surplus solution, will produce sticks the thick shape solid, carries on the drying process to it, obtains the caking component; Another lamination is mainly resolved B and the stripping medicinal preparation omnium-gatherum. We bench work skill process is simple, the extract and the stripping process is temperate, the resolved recycle, the reaction process is advantageous for the control, can cause the coal petroleum to separate Cheng Cuiyu the coal, the refined coal, the caking group to classify many kinds of unique race components equally in advance likely.

An improved axial gas bearing for a gas-driven NMR MAS sample rotor is disclosed that utilizes inward flow with a low rotational component over a rotor conical end. A conical flow region is formed between the rotor conical end and a conical stator bearing surface such that the included angle defining the stator surface is not less than the included angle defining the rotor conical end. Gas is injected radially inward with a significant axial rearward component from a number of small holes at high velocity from the periphery into the conical flow region. Compared to the radial velocity components, the tangential flow components of the injected gas are small and preferably opposed to the direction of the rotor rotation. The high and accelerating negative radial velocities may result in significant Bernoulli effect, such that the mean axial pressure over the conical rotor end may be less than atmospheric pressure for a given axial clearance, but as the clearance decreases, the hydrostatic effects exceed the Bernoulli effects and the mean axial pressure over the conical rotor end may then exceed atmospheric pressure by a substantial amount. Thus, a self-stabilizing axial bearing is formed with improved stability and stiffness for rotor surface speeds up to at least 80% of the speed of sound. Motive power required to spin the rotor may be provided by a radial-inflow microturbine at the opposite end of the rotor in a way that is readily compatible with automatic sample change.

An improved heating system air pressure sensing port. An example aircraft pitot tube heater uses Positive Temperature Coefficient (PTC) switching thermistors arranged to automatically sense the outside air temperature and heat to a design set point temperature. When a high outside air temperature is experienced, the pitot tube will not turn on. The pitot tube heater only turns on below the design set point and will consumes less current than the standard aircraft pitot tube heaters when operating at very cold temperatures. Virtually no current is drawn when the pitot tube increases past the set point, thus reducing the power drain on the aircraft system. The use of multiple thermistors gives the example pitot tube a level of failure redundancy that is not available in current pitot tube heaters.

The invention discloses a method for fracturing a coal seam by employing high-pressure gas. The method comprises the following steps: (1) tipsily drilling from a lower floor roadway of the coal seam to an upper coal seam; (2) inserting three pipes into a drill hole, and injecting polyurethane which is 20-50cm in thickness into the drill hole; (3) injecting cement mortar into the drill hole from a first grouting pipe, and shutting off a first which is arranged at the rear end of the first grouting pipe until the cement mortar overflows from a second grouting pipe; (4) injecting plugging mucilage glue containing particulate matters into the drill hole by virtue of the second grouting pipe after 12-24 hours; (5) injecting a high-pressure gas of which the pressure is 30-60MPa into the drill hole through a fracturing extraction pipe. According to the method disclosed by the invention, the plugging mucilage glue containing particulate matters is pressed into a pore fracture of a rock section under the effect of air pressure; the high-pressure gas is plugged by virtue of the mucilage glue; the problem of air leakage of the high-pressure gas in the coal seam fracturing process is effectively solved; the gas pressure of the fractured coal seam reaches the cracking pressure of the coal seam.

The invention relates to a filter, which comprises a filter shell, wherein the upper part of the filter shell is provided with an air inlet pipe, and the lower part of the filter shell is provided with a blow-off pipe. The filter is characterized in that a filter core is arranged inside the filter shell and comprises an upper supporting plate and a lower supporting plate; a foldable annular filter screen is arranged between the upper supporting plate and the lower supporting plate; an air outlet pipe is arranged on the lower supporting plate; an air outlet end of the air outlet pipe is extended out of the filter shell; the foldable filter screen is arranged between the upper supporting plate and the lower supporting plate; and a filter layer of the filter screen is telescopic. When the filter layer is compressed by the upper supporting plate under pressure, the pore diameter of the filter layer is reduced and the density is increased, so that the filtration precision can be improved. Under the condition of reverse blowing from the air outlet pipe, the air pressure drives the upper supporting plate to restore to the original state; the filter screen is stretched; the filter layer of the filter screen is loosened; and the density of the filter layer is reduced, so that air can easily remove dust on the outer surface of the filter screen, thereby the filter is convenient to use.

As previous processing of measurement in which gas to be measured containing, as gas components, carbon dioxide ¹³CO₂ and carbon dioxide ¹²CO₂, is introduced into a cell, and in which the intensities of transmitted lights having wavelengths suitable for measurement of the respective gas components, are measured and then data-processed to measure the concentrations of the gas components, the air having a predetermined volume Va is sucked by a gas injection device 21, a gas exhaust valve V6 of a cell 11 is closed and the air stored in the gas injection device 21 is transferred to the cell 11 filled with the air at an atmospheric pressure, thereby to pressurize the cell inside. The pressure thus pressurized is measured as P. The cell volume Vc is subtracted from the product obtained by multiplying the sum. V0 of the volume Va and Vc the cell volume Vc, by the ratio P0/P in which P0 is the target pressure of the gas to be measured at which a calibration curve has been prepared for an isotope gas analysis and measurement, thus determining the one-time gas injection amount of the gas injection device 21. Thus, measured concentration variations based on changes in atmospheric pressure can be corrected.

The invention relates to a method for preparing the cathode material used in a ferrous phosphate lithium battery by adopting low-valent oxyacid of phosphorus; the technical proposal is as follows: lithium salt, ferrous salt, phosphate, and hypophosphorous acid or hypophosphite are blended according to the mol ratio that Li: Fe: PO4<3->: H3PO2 or AH2PO2 or E(H2PO2)2 is equal to x: y (1-z): k. Carbon-containing compound or carbon powder and wet milling liquid are added, ball milling is carried out for 3-12 hours, and the mixture is dried in atmospheric pressure or vacuum at 48-100 DEG C. The dried powder is prepared into the lithium iron phosphate containing controllable Fe2P by two-stage sintering process or temperature programmed two-stage sintering process. When the molecular formula of hypophosphite, one ingredient of the reaction composite, is AH2PO2 or E(H2PO2)2, A is Li<+>, Na <+>, K<+>, Ag<+> or NH<+>, E is Ca<2+>, Sr<2+>, Ba <2+>, Ga <2+>, Ge<2+>, Sn<2+>, Sc<2+>, Mn<2+>, Fe<2+>, Co<2+>, Ni<2+>, Cu<2+>, Zn<2+> or Mo<2+>. The method of the invention has low cost of raw materials, broad source of raw materials, simple preparation and short time consumed; the prepared materials have even composition, excellent discharge performance and good discharge cycling performance in heavy current.

The invention provides an environment simulation test case and an environment simulation method. The environment simulation test case comprises a case body forming a work cavity inside, a heat exchanging device communicated with the work cavity via an air inlet and an air outlet to change the temperature of the work cavity, a vacuum generation device communicated with the work cavity via a pumping port to reduce air pressure of the work cavity, an ozone generation device communicated with the work cavity via an ozone outlet to provide ozone air to the work cavity, and a sample installation bench and a ultraviolet radiation lamp set both disposed in the work cavity, wherein samples can be placed on the sample installation bench; and the ultraviolet radiation lamp set can illuminate the sample. The environment simulation test can meet demands for reliability test for near space aerocrafts indoor.

The invention discloses a self-locking pressure signal feedback device which comprises a valve body, a valve cover, a piston, a microswitch and a channel, wherein the piston is provided with a lower piston body and an upper piston body; the valve body is internally provided with a baffle part defining the moving range of the lower piston body; the top of the upper piston body is provided with an exposed section protruding out of the valve cover; a wide-mouth groove internally provided with a ball is formed in the side part of the upper piston body, is perpendicular to the moving direction of the upper piston body and is provided an inclined wall facilitating vertical rolling of the ball; one side of the ball is arranged in the wide-mouth groove, and one side, outside the wide-mouth groove, of the ball is connected with the microswitch through an elastic part; the ball is pushed out of the wide-mouth groove by the upper piston body and outwards extrudes the elastic part when the piston is located at the topmost part; the ball moves into the wide-mouth groove under the counter force of the elastic part when the piston is located at the bottommost part. The device is compact in integral structure and convenient and rapid to install, has a self-locking function, can be reset only by man power after being started and is safe and reliable in operation, and system debugging does not need air pressure starting and can be carried out manually.

A resist removing device 1 functions to remove a resist from a substrate while preventing occurrence of popping phenomenon and at the same time attains reduction in cost of energy for the resist removing and has a simplified constitution. The resist removing device 1 is equipped with a chamber 2 for containing therein a substrate 16 (for example, a substrate having a high-doze ion implanted resist), and with a pressure below the atmospheric pressure, the chamber 2 is fed with ozone gas, unsaturated hydrocarbons and water vapor. The ozone gas may be an ultra-high concentrated ozone gas that is produced by subjecting an ozone containing gas to a liquefaction-separation with the aid of a vapor pressure difference and then vaporizing the liquefied ozone. For cleaning the substrate 16 thus treated, it is preferable to use ultra-pure water. The chamber 2 is equipped with a susceptor 15 for holding the substrate 16. The susceptor 15 is heated to a temperature of 100° C. or below. An example of the means of heating the susceptor is a light source that emits infra-red rays.

The invention relates to the technical field of drinking water purification, in particular to a multi-purpose purifying water filter applicable to military use, family use, and use for individual, unit and field. The water filter comprises a primary purifying water filtration device (A), a special purifying water filtration device (B), an advanced purifying water filtration device (C), a three-way valve (D), a manual or electric pneumatic storage tank water supply device (E), a municipal pipeline water supply device (F) and a manual or electric water pump water supply device (G). The water filter has the advantages that the multi-purpose purifying water filter with excellent effect of purification and filtration and convenience for use of military, family, unit, individual and field is provided. The multi-purpose purifying water filter has simple structural design of products, is convenient and practical and is low in cost, and can achieve the aims of outputting sanitary clean water and kitchen water, directly drinking water on the same purifying water filter respectively, and back flushing a filter element.

A characterization method for the solubility of ionic liquid is applied under atmospheric pressure for testing the function among ionic liquid and gas/gas molecules of volatile organic solvent, which is characterized by comprising: using an object ionic liquid as the sensitive film coat material of a resonator induction zone of a mass sensitive piezoelectric crystal detector; coating an ionic liquid film on the surface of the resonator induction zone; detecting the frequency change of the detector before and after acting with researched gas molecules to represent the function between the researched ionic liquid and the gas. The ionic liquid characterization method can obtain the solubility of ionic liquid in gas/volatile organics, and thermodynamic parameters as enthalpy, entropy, free energy change and the like in dissolution; and can research the function approach between ionic liquid and gas molecules. The measurement method is simple, fast and reliable, which can accelerate the development and application of ionic liquid.

The invention discloses a method for improving the performance of a superplastic formed component material. The method comprises the following steps of 1, installing two random electrodes in a formingmold, connecting the two random electrodes to a pulsed power supply to form a conductive path in the area, between the two random electrodes, of a superplastic formed component; 2, putting a plate blank of the superplastic formed component into the forming mold, and starting heating; conducting heat preservation for 10-30 min when the temperature reaches the superplastic forming temperature of the material; turning on an air inlet valve, and introducing argon at the pressure speed of 0.03-0.05 MPa/min; conducting pressure maintaining for 10-30 min to complete superplastic forming when the airpressure reaches the forming pressure intensity; and 3, turning on the pulsed power supply at the voltage of 0-150 V, the frequency of 100-800 Hz and the duration time of 20-60 s. By means of the technical scheme, the hollowing-out size and area can be effectively reduced, and the performance of the component is improved.

An electrostatically atomizing device has a housing and an electrostatically atomizing unit accommodated within the housing. The electrostatically atomizing unit includes an atomizing barrel and an emitter electrode disposed within the atomizing barrel and is configured to atomize water supplied to the emitter electrode at a tip of the emitter electrode and generate mist of charged minute water particles. Formed within the housing is an air pressure chamber which surrounds the atomizing barrel. The atomizing barrel is formed in its peripheral wall with a plurality of air inlets which are arranged circumferentially around the atomizing barrel to introduce pressurized air from the air pressure chamber for carrying the mist on the pressurized air introduced into the atomizing barrel from the plural air inlets and discharging the mist outwardly of the housing.

Production of SiALONC by silicon oil containing hydrogen and Al powder and its production are disclosed. The SiALONC ceramic consists of silicon oil containing hydrogen 18-55wt%, amino compound 43-70wt%, Al powder 2-22wt%. The production is carried out by: 1) mixing silicon oil containing hydrogen 18-55wt%, amino compound 43-70wt% with Al powder 2-22wt%, agitating under 0-100deg.C for 8-12hrs, and reacting to form Si-Al-O-N-C organic polymer; 2) inducing nitrogen with 0.5-1atmos into organic polymer in heat pressure sintering furnace, pressurizing 15-20Mpa, or inducing nitrogen with 0.5-1atmos into atmospheric pressure furnace under sintering temperature 1600-1750deg.C, keeping temperature for 1-2hrs, and sintering Si-Al-O-N-C ceramic. It achieves low cost and high strength.

The invention relates to the technical field of spacecraft deorbiting, and discloses a spacecraft deorbiting electrodynamic tether, comprising an electrodynamic tether and a charging and degassing device, wherein the electrodynamic tether comprises a conductive wire and an elastic layer sleeved outside the conductive wire, and the charging and degassing device is connected with the electrodynamictether for charging and degassing into the elastic layer. The invention provides a spacecraft deorbiting electrodynamic tether, the elastic layer sleeved outside the conductive wire is inflated by aninflating/deflating device, so that the elastic layer becomes an air column with an internal air pressure and a certain stretching tension, thus, the electrodynamic rope becomes a rod with certain bending and torsional stiffness in space, which improves the stability of the electrodynamic rope in space, avoids the problem that the effective length of the rope decreases due to the backward folding,does not need to consider the disturbance of the axis direction of the rope, and makes the state control of the electrodynamic rope relatively simple. In addition, it is convenient to model, which makes the electrodynamic tether more convenient and concise in theoretical analysis and model operation.

An engine unit includes a valve driving mechanism in which a cam having its cam profile axially varying continuously is slid along the axis of the cam shaft to control continuously a lift characteristic of an intake valve to be steplessly variable. In the control device of the engine, when the engine is, determined to be in a idling state by an idling-state determining unit, a target cam position is obtained according to a target valve lift amount calculated based on the cooling water temperature by a target cam position calculated unit, and the target cam position is corrected according to atmospheric pressure, an engine oil temperature, an ATF temperature, and an intake temperature, so that an engine rotation will be stabilized in the idling state.