559 results about "Environmental pressure" patented technology

An accumulator for use in deepwater operational and control systems which uses a differential between a high pressure ambient pressure source such as sea water pressure and a low pressure source such as a chamber holding vacuum or atmospheric pressure to provide storage and delivery of hydraulic power for operation of equipment.

A temperature independent pressure sensor for selectively determining pressure is provided. The sensor comprises a resonance sensor circuit, a pressure sensitive component disposed on the sensor circuit, and an electromagnetic field modulator. A temperature independent pressure sensor system comprises a resonance sensor circuit, a pressure sensitive component disposed on the sensor circuit, an electromagnetic field modulator, and a processor that generates a multivariate analysis of sensor response pattern that is based on a change in an environmental pressure of the sensor system. A method of detecting a pressure response pattern in a temperature independent manner is also provided.

The invention discloses a high-altitude and low-pressure characteristic simulation test station of an air compressor in an internal-combustion engine, relating to a characteristic simulation test station of an air compressor in an internal-combustion engine, and comprising an air pipeline system and a lubricating system, wherein the air pipeline system comprises a vacuum pump, a pressure stabilizing box, and an air filter, a flow testing section, an air inlet parameter testing section, a flow stabilizing section and an air compressor sequentially connected with an outlet of the pressure stabilizing box, and an air exhaust parameter testing section, a back pressure regulating valve, a stopping valve and an air exhaust intercooler sequentially connected with an outlet of the air compressor;the lubricating system comprises an oil tank, an oil supplying system and a lubricant intercooler; an outlet of the air exhaust intercooler is connected with the pressure stabilizing box so that an air pipeline of the test station forms a sealed air circulation system; and the oil tank is arranged inside the pressure stabilizing box so as to improve the sealing property of the test station. The test station can simulate the environmental pressure at the altitude of 0-30,000 meters and performs the high-altitude simulation characteristic test of the air compressor in the turbo-charged internal-combustion engine, therefore, the sealing property and simulated altitude of the test station are higher than those of the existing simulation test station of the same type.

The invention discloses a biological carbon organic fertilizer and a preparation method thereof. The biological carbon organic fertilizer comprises, by weight, 32.12%-34.60% of biological carbon, 62.83%-64.12% of organic matter and 2.28%-5.05% of trace elements, and preferably biological carbon produced form flue-cured tobacco stalk. According to the invention, characteristics of the biological carbon prepared from flue-cured tobacco stalk are fully utilized to produce a novel fertilizer with a variety of effects, so as to increase the utilization rate of fertilizer, and improve the absorption and utilization of trace elements by crops. A reasonable and scientific approach for utilization of tobacco stalk is also provided to reduce the environmental pressure of planting area, has good economic benefit, social benefit and ecological benefit, and can enhance the yield and quality of crops.

The invention relates to a premix coating trace elements and a preparation method thereof. The premix coating the trace elements comprises an outer gastric or enteric coating layer and an inner trace element premix slab core, and furthermore, the inner trace element premix slab core comprises the following materials by the mass fraction of 100%: 60%-80% of compound trace elements and 20%-40% of auxiliary materials; the grain diameter of the premix coating the trace elements is 40-80 meshes; and the mass of the gastric or enteric coating layer accounts for 2-10 percent of the total mass of the premix coating the trace elements. The invention can effectively prevent ferrous iron from being oxidized into ferric iron, prevent certain trace elements from being volatilized and prevent iron ions, copper ions, zinc ions, and the like from taking catalytic oxidation effect on fats and vitamins, thereby reducing the loss of the vitamins and the decomposition of the fats, prolonging the quality guarantee period of feeds, changing the palatability of the feeds and enhancing the feed intake. Compared with the prior art, the invention can reduce the addition amount of the trace elements contained in unit feeds by 30-70 percent or more than 30-70 percent, thereby reducing the environmental pressure; and in addition, the premix coating the trace elements is a green feed additive.

The invention relates to a method for recovering and utilizing kiln slag of a zinc hydrometallurgy volatilizing kiln, comprising the following steps: firstly, crushing the kiln slag into particles with the particle diameter of about 0.01 to 2 mm, and carrying out primary selection under the magnetic field intensity of 800 to 1800 oersteds to obtain a first magnetic part and a first non magnetic part of the kiln slag; and secondly, crushing the first magnetic part into 200 meshes with the particle size range of 50 to 60 percent by weight, and carrying out fine selection with the magnetic fieldintensity of 500 to 1090 oersteds to obtain a second magnetic part and a second non magnetic part. By adopting the method, the recovery rate of metal component or carbon component in the kiln slags isobviously enhanced, the kiln slag is efficiently utilized to the maximum, and the environmental pressure is greatly reduced.

The invention discloses a low-phosphorous environment-friendly composite corrosion and scale inhibitor that is used in a circulating cooling water system. The low-phosphorous environment-friendly composite corrosion and scale inhibitor comprises 2-phosphonic butane- 1,2,4 -tricarboxylic acid, plyaspartic acid or polyepoxysuccinic acid, maleic anhydride-acrylic acid copolymer, acrylic acid-2-acrylamide-2-methyl propanesulfonic acid or acrylic acid-acrylate-sulfonate, acrylic acid-acrylate-phosphonic acid-sulfonate quaternary copolymer, zinc salts (zinc sulfate or zinc chloride) or hydroxy benzotriazole. The invention is particularly suitable for the circulating cooling water system with high concentration multiple, which needs to control the phosphorous content (the total phosphorous content is lower than 0.5mg/l) due to environmental pressure.

The invention relates to a preparation method of nitrile. Compared with the prior art, the preparation method has the characteristics of obvious reduction of the usage amount of ammonia sources, low environmental pressure, low energy consumption, low production cost, high purity and yields of nitrile products, and the like, and can be used for obtaining nitrile with a more complex structure. The invention also relates to a method for preparing corresponding amine with nitrile.

The invention discloses a baking-free water-permeable brick, which comprises the following raw material compositions by weight: 60 to 75 percent of aggregate and 25 to 40 percent of adhesive; the aggregate is scrap of building ceramics, sanitary ceramics and building materials; and the adhesive is quick-setting inorganic adhesive. The invention also discloses a method for manufacturing the baking-free water-permeable brick. The baking-free water-permeable brick utilizes mass waste ceramics and other building scrap as the raw materials, is formed by adopting the quick-setting inorganic adhesive to adhere and solidify, does not need a high-temperature sintering procedure, has short solidifying time and reduces the pollution to the environment and the production cost at the same time. The method effectively recycles the waste resource, greatly reduces the environmental pressure and realizes the recycling of the resource; and the manufactured water-permeable brick has high water permeability and good compression-resistant and wearproof strength.

The invention discloses belite-sulphoaluminate-ferrous aluminate cement which comprises the following components by mass percent: 38-70% of beta-C2S, 27-37% of C4A3S-(refer to the description) and 3-25% of C4AF. The invention further discloses a preparation method of the belite-sulphoaluminate-ferrous aluminate cement. The preparation method comprises the following steps: with industrial waste residue and industrial gypsum as the raw materials, mixing the raw materials with aluminous corrective addition namely bauxite or tailing bauxite, forming, performing hydrothermal reaction, crushing, calcining and grinding to obtain the belite-sulphoaluminate-ferrous aluminate cement. According to the invention, the low-carbon belite-sulphoaluminate-ferrous aluminate cement is prepared at low temperature; in addition, limestone is not used, so that no carbon dioxide is generated to increase the environmental pressure; moreover, the calcining temperature is low, so that the energy consumption is low, and the preparation method is a low-carbon and environment friendly preparation method.

The invention provides a production method for circular modern high-efficiency agriculture. The method comprises the following parts: a substitute technology for substituting the conventional resources, materials and products by developing and using new agricultural resources, materials and products to improve the utilization efficiency of the agricultural resources and reduce the environmental pressure, a decrement technology for achieving the set agricultural production purpose by fewer materials and energy resources, saving the agricultural resources and reducing the pollution from the source, a reutilization technology for prolonging the service cycle of agricultural raw materials or products and reducing the agricultural resource consumption through repeated use, a recycling technology for turning wastes in the production or consumption process into useful resources or products, and a systematization technology for achieving optimum usage of materials, energy, funds and technologies by creating reasonable product combinations, industry combinations and technology combinations.

The invention relates to a host cell and a method for the host cell applied in efficient secretion expression of a recombinant protein, which belongs to the filed of microbiological engineering and fermentation engineering. The invention provides a bacillus licheniformis host cell CBB3008 which is preserved in the China Center for Type Culture Collection with the preserving number of CCTCC NO: M 208236. The invention transforms an expression plasmid of an industrial enzyme which is obtained by a gene cloning technology into the host cell to synthesize an industrial enzyme preparation in the host cell efficiently, and then secretes the synthesized enzyme protein into a culture medium efficiently through a protein secretion system of the host cell, thus the invention can guide efficient secretion production of the industrial enzyme preparation. Therefore, the invention is helpful to reduce the fermentative production cost of the industrial enzyme preparation, simplify the fermentative production process and reduce the environmental pressure of the fermentation industry. A method for host cell screening and genetic improvement of the invention can also be used for other types of host cells, in particular for the breeding of the host cells of bacillus subtilis, bacillus megaterium, bacillus pumilus, bacillus starch solution and the like.

The invention discloses a negative pressure pneumatic type automatic sampler for a water sample in a medium-deep layer. The negative pressure pneumatic type automatic sampler comprises a sampling water storage chamber, a balance weight device and a gas-liquid tank, wherein a sampling hole is formed in the upper part of the sampling water storage chamber, a gas-liquid piston cylinder is arranged below the sampling hole, a liquid storage cavity of the gas-liquid piston cylinder is connected with the gas-liquid tank through a pipeline, an environmental pressure control valve is arranged on the pipeline, a balancing weight of the balance weight device is fixed on a balancing weight frame through a balancing weight fixed releasing control valve, the balancing weight fixed releasing control valve is connected with the gas-liquid tank through a water returning pipeline, a water returning control valve is arranged on the water returning pipeline, and a pressure trigger button matched with a water returning control valve is arranged at the bottom of the liquid storage cavity. The negative pressure pneumatic type automatic sampler submerges in water under the action of gravity of the balancing weight, so that the water sample in the medium-deep layer with the depth of below 10-30m is automatically acquired, the balancing weight is discarded, a device automatically returns and the acquired sample is brought out due to the adoption of an underwater negative pressure pneumatic technology.

The invention discloses a method for treating tail gas generated in chlorination reaction by using thionyl chloride. The existing traditional tail gas treatment method is costly due to a large amount of alkali consumption, and the pressure on environmental protection is high due to the final generation of a large amount of waste water containing heteroions. In the present invention, by controlling the amount of water, the hydrogen chloride in the tail gas is subjected to two-stage absorption with water, and the concentrated hydrochloric acid with a hydrogen chloride content close to saturation and a small amount of sulfur dioxide is obtained through the first-stage absorption; the second-stage absorption: after the first-stage absorption, the The exhaust gas is subjected to the second-stage absorption, and the added water is not discharged to obtain dilute hydrochloric acid containing a small amount of hydrogen chloride and a small amount of sulfur dioxide. The dilute hydrochloric acid is used as the raw material water for the first-stage absorption; after the above-mentioned secondary absorption treatment, it is then treated with alkali or alkali The third level of water absorption is used to absorb sulfur dioxide in the tail gas to obtain a relatively pure aqueous solution of sodium sulfite. The invention has high treatment efficiency, complete tail gas absorption, and reduces the pressure on environmental protection.

The invention discloses a preparation method of sulfoaluminate Belite cement. The preparation method comprises the following steps: taking industrial waste residues and industrial gypsum as raw materials, taking bauxite or bauxite tailings as a corrective material, adding water for grinding after mixing, molding, carrying out hydrothermal reaction, and then, smashing, calcining and grinding, so as to obtain sulfoaluminate Belite cement, wherein the main components of the sulfoaluminate Belite cement are C4A3S<-> and beta-C2S. According to the invention, the sintering temperature of the sulfoaluminate Belite cement is reduced through the hydrothermal reaction performed in advance, the energy consumption is reduced, the performance of the sulfoaluminate Belite cement is improved through a proper ratio and a proper technology, and the fact that the low-carbon sulfoaluminate Belite cement is prepared under low temperature; besides, limestone is not used, the generation of carbon dioxide is avoided, the environmental pressure is increased, and the energy consumption is low due to low calcination temperature; therefore, the preparation method of the sulfoaluminate Belite cement is low-carbon and environment-friendly.

The invention provides high-strength lightweight aggregate concrete. The concrete comprises the following raw materials in parts by weight: 350 to 550 parts of cementing material, 450 to 600 parts oflightweight fine aggregate, 500 to 650 parts of lightweight coarse aggregate, 5 to 7 parts of an additive, and 150 to 170 parts of water. The lightweight fine aggregate comprises 60 to 80 percent of fine aggregate ceramsite in mass percent, and 20 to 40 percent of active construction waste powder in mass percent; the lightweight coarse aggregate comprises the following components in mass percent:50 to 75 percent of coarse aggregate ceramsite, 10 to 30 percent of stone gangue, 10 to 20 percent of ceramic waste residue, and 3 to 8 percent of expanded graphite. The concrete reasonably utilizes the stone gangue, construction waste, urban sludge and ceramic waste residue into a gel material and aggregate, not only improves the mechanical strength and stability of the concrete, but also provides a novel approach for the reuse of solid waste, and is beneficial to energy saving and environmental pressure relieving.

The invention relates to a method for recycling waste residue in manganese industry production. The method comprises the specific following steps: (1) pre-processing filter residue; (2) adding acid and leaching; (3) carrying out filtering and solid-liquid separation on ore slurry; (4) recovering hematite powder; (5) recovering manganese carbonate concentrate; and (6) preparing a nitrogen-phosphorus compound fertilizer base material. By the method, hematite powder, manganese carbonate concentrate and the nitrogen-phosphorus compound fertilizer base material can be recovered from leached press-filtered residue, the process is simple and is easy to achieve industrialization and meanwhile, the content of the heavy metal ingredients is in completely in conformity with national associated standards, treated wastewater and waste residue are free of harmful ingredients such as heavy metals, the environmental pressure is alleviated and the method has great promotional values.

The present invention relates to optical fiber pressure sensors. In one embodiment, liquid pressure of an environment may be measured based on capillary action occurring within an optical fiber having one or more hollow columns within. In another embodiment, the change in environmental pressure may be measured based on light diffracted from an optical fiber having optical grating. In either embodiment, the pressure sensor is manufactured from a single optical fiber.

The invention discloses an overhanging oil needle bumper used for a large aerobus landing gear. The main structure of the overhanging oil needle bumper comprises an upper actuation cylinder, a lower actuation cylinder, a low pressure air chamber, a high pressure air chamber, a compression damping chamber, an oil needle, a damping platform, a damping hole and an inflation hole; the top end of the upper actuation cylinder is connected with the oil needle by screw thread, namely, the oil needle overhangs in the upper actuation cylinder; the internal bottom of the lower actuation cylinder is provided with the low pressure air chamber and the high pressure air chamber which are separated from each other by a movable piston; the lower part of the lower actuation cylinder is provided with the inflation hole, by which two inflation pipelines are led out and respectively connected with the high pressure air chamber and the lower pressure air chamber; the two pipelines are internally provided with two check valves respectively, so as to control the inflation operation. The overhanging oil needle bumper can simplify the arrangement of the inflation hole and lead the inflation to the high pressure air chamber and the lower pressure air chamber to be more convenient. As the dual air chambers are arranged at the lower part of the bumper at the same time, the reaction force generated by the bumper has progressive characteristic when the bumper bears the environmental pressure. Furthermore, the overhanging oil needle bumper has faster pressure transmission and more remarkable damping effect compared with the traditional dual air chamber structures.

The invention discloses a blood-pressure noninvasive measuring device based on micro-bubble ultrasound contrast agents and a measuring method thereof. The measuring device comprises an ultrasonic probe, a transmitting module, a receiving module, a pressure-measuring position selecting module, a band-pass filter, a spectrum analyzer, a sub-harmonic optimal transmitting frequency calculating module, and a blood-pressure calculating and displaying module. The measuring method comprises the steps of: 1) infusing the micro-bubble ultrasound contrast agent solution into blood through veins and monitoring the track thereof by utilizing the diagnosis ultrasound, 2) collecting a sound scattered signal from the contrast agent when the contrast agent reaches the pressure-measuring position, 3) screening and performing spectrum analysis on the collected sound scattered signal so as to acquire the sub-harmonic optimal transmitting frequency, and 4) acquiring an environmental pressure according to a relational expression between the sub-harmonic optimal transmitting frequency and the environmental pressure. The invention can provide a more precise blood-pressure noninvasive measuring result with higher repeatability and reliability.

The invention relates to an industrial synthesis method of tris(butoxyethyl)phosphate (TBEP) and a device thereof. Specifically, the method consists of: in the presence of a water absorbent and a catalyst, reacting ethylene glycol monobutyl ether with phosphorus oxychloride to generate a TBEP crude product, letting the TBEP crude product enter a washing tower to conduct multistage countercurrent extraction washing, then bringing the crude product into a stratification pot to conduct standing stratification, removing a saponification and aqueous layer from an upper material layer, then subjecting the obtained material layer to a distillation kettle, carrying out reduced pressure water vapor dealcoholization, introducing water vapor to the kettle bottom, conducting water vapor distillation for 0.9-1.2h, removing residual ethylene glycol monobutyl ether, and then carrying out reduced pressure dehydration and filtering to obtain a TBEP finished product. The product obtained by the method has low sodium ion content, and the tris(butoxyethyl)phosphate purity is high, the method reduces the probability of tris(butoxyethyl)phosphate degradation or loss, improves the yield, also reduces the environmental pressure, and can lower the content of sodium ions in the product without harsh distillation conditions, thereby greatly reducing the production cost, improving product quality, and increasing the economic benefits of enterprises.