1007results about How to "Extended replacement cycle" patented technology

The present invention relates to process of catalytic hydration of ethylene epoxide to prepare glycol and aims at solving the problems of available corresponding process. The said process is especially suitable for low water ratio operation, and has the features of very low heat energy consumption and power consumption, high activity, selectivity and stability of catalyst, and low production cost. The said process may be used in industrial production of glycol.

The invention discloses an elevator control method based on face recognition. The elevator control method includes the steps that face image information is collected, and a matched database is established; the elevator control authority of each elevator user is set; and face information of each person entering an elevator is obtained and is matched with the face information in the matched database, and whether the ban on an elevator panel button control module is lifted or the ban is put on the elevator panel button control module is judged according to whether matching succeeds or not. According to the elevator control method, face recognition of elevator persons can be achieved, authority distribution is conducted on the elevator persons typed in the database, the visitor authority of each floor can be set, and the safety grade of a building is improved; and meanwhile, face recognition is adopted, and face recognition is more convenient and faster compared with traditional card reading and fingerprint recognition.

The invention relates to a device and a method for intermittently ventilating and cooling a cable tunnel. The device comprises a temperature acquisition assembly, a fan controller and a fan which are sequentially connected with one another. The method includes that the temperature acquisition assembly measures the temperature of the inside of the cable tunnel and the temperature of an external atmospheric environment in real time and transmits the temperature of the inside of the cable tunnel and the temperature of the external atmospheric environment to the fan controller; and the fan controller intermittently starts or stops the fan according to current temperature conditions to cool the cable tunnel. Compared with the prior art, the device and the method have the advantages of good ventilating and cooling effects, capabilities of saving energy and advantageously prolonging the replacement cycle and the service life of the fan in the tunnel, and the like.

The invention discloses a device for eliminating haze and atmospheric pollutants. Appropriately preheated atmosphere with pollutants flows through a capillary tube array and is introduced into a liquid adsorbent, the pollutants in the atmosphere inside formed bubbles are adsorbed or dissolved by the surface of the liquid inside the bubble, and then atmosphere purification is achieved. The purification is applicable to atmospheric suspended grains of various diameters, and pm2.5 purification can be thoroughly achieved. To enhance the purification effect and the use convenience, the device is provided with function components such as a stirring rod with a bubble cutting steel wire and a spiral belt, and a waste liquid sucking chamber. The device can be separately used and can be also used with other devises in series. The device can be mounted on various carrying tools such as a vehicle, and due to the position change, the haze cleaning places can be changed at appropriate time, and the movement airflow of the carrying tool can be used as the power for eliminating the haze. The device can be used for purifying air at fixed points. When the device is used together with dust cleaning equipment, pm2.5 purification in polluted enterprises can be achieved. With special liquid adsorbent, the device can be used in special purification and professional equipment.

The invention provides a suspension type monorail track and a trolley bus and belongs to the field of communication and transportation. The suspension type monorail track comprises a track beam. A walking cavity is formed in the track beam. The bottom of the walking cavity is a walking face. The side face of the walking cavity is a guide face. A wear-resisting and tackifying layer is arranged on the walking face. A wear-resisting layer is arranged on the guide face. According to the suspension type monorail track and the trolley bus, the structure of additionally arranging the wear-resisting and tackifying layer on the walking face and additionally arranging the wear-resisting layer on the guide face is adopted, in this way, wear-resisting performance of the track beam can be effectively improved, and the period for replacing the track beam is prolonged greatly; moreover, adhesive force between a walking part of a vehicle and the walking face is increased, which is beneficial for enhancing the ability of a track system to adapt to terrain of a large ramp; meanwhile, by means of the wear-resisting and tackifying layer capable of being replaced or laid again, convenience of maintaining the track is improved, cost of maintaining the track is reduced, and the defects in the prior art are effectively overcome.

The invention relates to a preparation method of a metal corrosion inhibitor. Fatty acid and polyamine are used as initiative raw materials in the method, and the novel metal corrosion inhibitor is synthesized by amidation, quaternization and substitution reaction. The corrosion inhibition rate of the metal corrosion inhibitor prepared by the method is more than 99 percent, the corrosion inhibitor is easily biodegraded, the pH value of the corrosion inhibitor is 6 to 8 and close to neutrality, and the corrosion inhibitor is convenient to transport and use.

The invention discloses a vertical vacuum sputtering coating production line. The vertical vacuum sputtering coating production line comprises a transmission assembly line and a coating assembly line, wherein the coating assembly line is connected with the transmission assembly line. The transmission assembly line comprises a rail, at least one transmission trolley and at least one substrate carrying device. The transmission trolley runs on the rail and transmits the substrate carrying device. The coating assembly line comprises an inlet cavity, an inlet transition cavity, an inlet buffer cavity, a coating cavity, an outlet buffer cavity, an outlet transition cavity and an outlet cavity. Compared with the prior art, the transmission assembly line and the coating assembly line are connected end to end to form an annular assembly line, so that the occupied area is saved; intelligent control is adopted for substrate transmission in the whole coating production line, so that manpower and material resources are saved, and production efficiency is improved; all cavities in the coating assembly line are replaced or added according to requirements of products, so that the whole coating production line meets the requirements of various coating processes; andthe service life is prolonged, resources are saved, and therefore the vertical vacuum sputtering coating production line has quite wide application prospects.

The invention belongs to the technical field of air conditioner control and provides a fresh air system and an air change control method and device thereof. An outdoor air quality index is obtained by detecting the dust concentration and odor concentration of outdoor air, and whether the outdoor air quality is good is judged. Meanwhile, an elastic parameter is obtained according to a detected indoor carbon dioxide concentration and a preset carbon dioxide concentration, and whether indoor air meets air change execution conditions is judged according to the elastic parameter. When the outdoor air quality is very good and the indoor air does not meet the air change execution conditions, on-off control over the air change function of the fresh air system is conducted or the air change speed of the fresh air system is controlled according to the obtained outdoor air quality index and the elastic parameter. Accordingly, the air change function of the fresh air system can be regulated and controlled. In this way, the air change function is not performed in a whole course when the fresh air system operates. The service life or replacement cycle of a dust removal component and an odor removal component is prolonged. Furthermore, the maintenance cost of the fresh air system is lowered.

The invention discloses a dynamic balance correcting method for a fan, which can be used for shortening the correcting time. The method comprises the following steps of: firstly, determining an imbalance point of the fan and measuring the radial vibration offset delta caused by imbalance of the fan by using a vibration measurer; secondly, computing allowed imbalance degree and allowed residual imbalance amount of the fan, wherein the allowed imbalance degree eper of the fan is equal to (G*1000)/(n/10), and the allowed residual imbalance amount m of the fan is equal to (eper*M)/(r*2); thirdly,computing the imbalance amount of the fan, wherein the imbalance amount m'' of the fan is equal to (m/0.13)*delta; and lastly, balancing. After the method is adopted for correcting the dynamic balance of the fan, the correcting time can be shortened greatly, the fan restores running within a very short period of time, normal performance of production is ensured, a large quantity of manpower and material resources are saved simultaneously, and the production running cost is lowered. The method is suitable to be popularized and applied in the fan repair field.

The invention relates to an olefinic carbon compound nanometer soft metal wear-resistant self-repairing material with surface modification, and a preparation method thereof. A nanometer olefinic carbon material with wear-resistant performance and a nanometer metal material with an abrasion repairing function are subjected to in-situ composite preparation with a sol-gel method, so that the materialhas dual functions of abrasion resistance and reduction and abrasion self-repairing, and the advantage complementation mechanism of the synergetic effect and the performance of different types of nanometer materials is performed. The olefinic carbon compound nanometer soft metal wear-resistant self-repairing material prepared with the preparation method can be used for realizing the breakthroughof 'exponential increase of wearing resistance under extreme pressure', 'zero abrasion of metal friction' under an extreme pressure situation is broken through, true super lubrication under the extreme pressure situation is realized, traditional sulfur-phosphorus-containing liquid lubrication performance and application technologies are subjected to revolutionary changes due to the occurrence of olefinic carbon compound wear-resistant energy-saving materials, the material does not contain caustic organic sulfur and phosphorus compound, wear-resistant performance is improved, and wear reductionenergy saving performance is also improved.

The invention relates to a material for an aluminum electrolysis crust-breaking hammer, which is characterized by comprising the following components in percentage by weight: 0.5%-3.0% of carbon, 3.5%-10.0% of manganese, 0.5%-1.0% of silicon, less than 0.05% of phosphorus, less than 0.05% of sulphur, 5.0%-20.0% of chromium, less than 0.05% of Ni and the balance of ferrum. The material for the aluminum electrolysis crust-breaking hammer is an iron alloy material and is prepared by using a lost foam casting or sand casting process. In the invention, The manganese content in the material for the crust-breaking hammer is increased and the chromium content is optimized, thereby the material effectively improves the strength and wear resistance of the aluminum electrolysis crust-breaking hammer, prolongs the service life of the hammer, extends the replacement period, reduces the production cost and effectively relieves the labor intensity.

A seawater desalination system which can solve a problem of wear of a sliding member and can suppress mixing of concentrated seawater and seawater by making an energy exchange chamber no-piston configuration is provided.

In a seawater desalination system for producing fresh water from seawater by passing the seawater pressurized by a pump through a reverse-osmosis membrane-separation apparatus (4) to separate the seawater into fresh water and concentrated seawater, an energy exchange chamber (20) for utilizing pressure energy of the concentrated seawater discharged from the reverse-osmosis membrane-separation apparatus (3) as energy for pressurizing part of the seawater is provided. The energy exchange chamber includes a concentrated seawater port (P1) for introducing and discharging the concentrated seawater, a seawater port (P2) for introducing and discharging the seawater, and a plurality of partitioned fluid passages (R) provided in the chamber to allow the concentrated seawater port (P1) and the seawater port (P2) to communicate with each other.

The invention discloses a nano long-acting liquid coolant. The nano long-acting liquid coolant comprises the following components of a base liquid which is composed of diatomic alcohol and a diluent, metal nanoparticles with a particle size of 3-100nm or carbon nano tube particles with a tube diameter of 8-100nm and length of 100-600nm, a dispersing agent, a corrosion inhibition additive, a pH regulator and a fluorescence colorant. The nano long-acting liquid disclosed by the invention is high in heat conductivity coefficient, good in heat transfer performance, good in liquidity and low in cost.

A thermal cycle management system for a vehicle fuel cell includes a stack cooling circuit, a cabin heating circuit, and a controller; the stack cooling circuit includes a first water pump, a deionization and filter assembly, a stack, and a cabin heat exchanger. The first water pump is arranged on a main loop of the stack cooling loop and used for providing circulating power for the galvanic pilecooling loop; the deionization and filter assembly is connected in series behind the first water pump and is used for removing ions and impurities in the cooling liquid; the stack is connected in series behind the deionization and filter assembly and is used for generating electric energy; the cabin heat exchanger is connected in series behind the stack and used for exchanging a part of heat generated by the stack to the cabin heating loop. According to the thermal cycle management system of the vehicle fuel cell, an integrated scheme of integrating the ion exchanger and the cooling liquid filter is adopted, the system performance is guaranteed, and the number of parts is reduced.

The invention discloses a dust blowing device for a selective catalytic reduction (SCR) denitration reactor. The dust blowing device comprises an air compressor, a buffer tank, a solenoid valve and jet pipe network unit module which are communicated in sequence; the jet pipe network unit module is positioned on catalyst units positioned in the SCR denitration reactor and jet pipes in the jet pipe network unit module are in one-to-one correspondence with the catalyst units. In the dust blowing device, a dust blowing air source is provided for the jet pipe network unit module by utilizing the air compressor; compressed air is stored and released by utilizing the buffer tank; the opening and the closing of the buffer tank is controlled by utilizing the solenoid valve; the jet pipes which are in the jet pipe network unit module and are in one-to-one correspondence with the catalyst units blow away dust in a manner of being dead against catalysts. The dry compressed air serves as a dust blowing medium, so that the normal work of the catalyst in a dry state is guaranteed. The dust blowing device has no vibration, no high temperature, no dead angle or no gathered dust residue, and has a large coverage surface when the gathered dust is cleaned by the compressed air; the service life of the catalysts is prolonged; the replacement cycle of the catalysts is prolonged; the denitration efficiency is effectively improved; an energy resource is saved.

The invention discloses resourceful treatment system and treatment method of aluminum ashes, and aims at solving the technical problems that the aluminum ashes in the prior art are low in recovery rate, complicated in process, and easy to pollute environment. The system comprises an aluminum ash separation unit, a burdening unit, a molding unit and a baking unit. The method comprises the following steps: adding hot aluminum ashes to a hot aluminum ash separator; separating out metallic aluminum and low-aluminum ashes; evenly mixing and stirring the obtained low-aluminum ashes and a binder according to the mass ratio of 10:1 to 10:2; pressing the mixed materials into an anode steel claw protection ring blank and demolding; sintering and sizing the obtained anode steel claw protection ring blank and then obtaining an anode steel claw protection ring. By adopting the resourceful treatment system and treatment method, integrated treatment of the aluminum ashes can be achieved, the treating processes of the aluminum ashes are simplified, the resourceful treatment system and treatment method are simple and convenient to operate, energy-saving and environmentally friendly, waste emission can be greatly reduced, regeneration and cyclic utilization of resources are fully achieved, and the problem of innocent treatment of the aluminum ashes is solved.

The invention belongs to the polyester spinning field and relates to an 8-shaped hollow polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. A spinning melt contains saturated fatty acid metal salt and modified polyester, wherein the mass ratio of saturated fatty acid metal salt to modified polyester is (0.0005-0.002) to 1; saturated fatty acid metal salt is fatty acid metal salt, the carbon atomic number is 12-22, the melting point is 100-180 DEG C, and the kinetic viscosity is less than or equal to 1Pa.s; a molecular chain of modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a rigid structure chain segment, and the molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02-0.05) to 1; and the die swell ratio of the spinning melt is 1.23-1.33, and the after-filtration pressure during the spinning is 85-125kg/cm<2>. The prepared 8-shaped hollow polyester fiber FDY has relatively high degree of hollowness and relatively good shape-preserving effect.

The present invention relates to a spinning head for synthetic fibers, an oiling device, a spinning device and a manufacturing method thereof. The spinning head (1) comprises a single row of spinning holes (2). The filaments discharged from the spinning hole (2) of the spinneret (1) avoid twisting and are wound up to the take-up roll (12) by means of an oiling device (8) and guide devices (9, 10). In the spinning head (20), a groove (24) may be formed to extend in a radial direction and have its center located in the spinning hole (23). A molten polymer filtered by the filter medium (22) can enter the spinning hole (23) through the slot (24). The oiling device (31) may include an oiling device (8) and a guide element (9), and the cooperation of the two elements prevents incomplete oiling.

The invention relates to a pouring material for a cement kiln tertiary air duct. The pouring material comprises aggregate and a matrix material according to a weight ratio of 2-8: 1-3. The aggregate has particle sizes of 1-10mm and the matrix material has the particle sizes of 0.1-0.5mm. The aggregate comprises, by weight, 28-50 parts of fused magnesia, 25-45 parts of modified white alundum, 5-15 parts of zirconium mullite and 8-20 parts of magnesium aluminate spinel. The matrix material comprises magnesia powder, silicon oxide fine powder, mullite powder, alumina fine powder and andalusite. The pouring material utilizes appropriate aggregate and the matrix material and has wear resistance and corrosion resistance, a uniform degree of expansion and good thermal shock stability. Through use of a fiber additive, pouring material integrality is improved, and pouring material flexural performances and anti-erosion performances are improved. The cement kiln tertiary air duct has the advantages of long service life, long replacement period, small production cost and high production efficiency under bad conditions.

The invention discloses a grinding and driving mechanism of an inner grinder of a large-diameter cast iron pipe production line. The mechanism is provided with a grinding rod shaft bracket connected to a connecting seat of the inner grinder, and a grinding rod shaft is arranged on the front part of the grinding rod shaft bracket extending into a cast iron pipe through a bearing block, wherein the axis of the grinding rod shaft is longitudinally parallel to the grinding rod shaft bracket; and a driving motor is fixed on the grinding rod shaft bracket and connected with the grinding rod shaft through a belt transmission mechanism. The adoption of the technical scheme simplifies the structure of the inner grinder, decreases the length of the grinding rod shaft and reduces the number of supporting bearing blocks of the grinding rod shaft; in addition, the weight of the equipment mechanism is lightened, and under the condition that the power of a grinding electromotor keeps unchanged, the grinding time is reduced, and the replacement period of the grinding rod shaft is prolonged, thereby reducing the inventory of spare parts, greatly improving the production efficiency and reducing the production cost.

The invention provides an on-line roll grinding method for a carbon jacket hearth roll. According to the invention, for great accretion, temperature of each furnace segment is set to be 20 to 25 DEG C higher than normal temperature, a transitional coil which has been used less than 4 times and has a thickness of 0.5 to 0.7 mm is put in a furnace, tension in the furnace is eliminated, the roll is allowed to revolve for 8 to 12 min in a manner of combined inching after revolution for 4 to 5 min, then heating is carried out so as to control furnace temperature, and the above mentioned procedures are repeated for 3 cycles; for fine accretion, temperature of each furnace segment is set to be 10 to 15 DEG C higher than normal temperature, a transitional coil which has been used less than 4 times and has a thickness of 0.35 to 0.5 mm is put in a furnace, tension in the furnace is eliminated, and the roll is allowed to revolve for 1 to 3 min. According to the invention, accretion in the carbon jacket hearth roll can be rapidly removed; for the fine accretion, it is guaranteed that no accretion occurs any longer within 16 h after removal of the fine accretion; for the great accretion, it is guaranteed that no accretion occurs any longer within 30 h after removal of the great accretion; and therefore, an operating rate of a unit and rolling yield of products are greatly improved, and production cost and energy consumption are reduced.

The invention discloses a dry process scale continuous production process of quartz sand, which comprises the process steps of quartz ore breaking and crushing, product grading, packaging and transportation, dust pollution treatment and the like. In the process step of the quartz ore breaking, a two-grade screening type breaker is adopted, and a cleaning dewatering screen and a broken stone drying tower are arranged between two grades of screening and breaking; in the process step of quartz ore crushing, a single-stage HK type sand making machine is adopted, and single-group production or multi-group parallel production can be performed from the HK type sand making machine to the finished product delivery after screening and grading. In the process step of product grading, the mode combining air classification and sieve classification is adopted, namely the process step of single-stage air classification, single-stage drum screen classification and two-stage rotation movable screeningmachine classification is adopted, wherein the air classification adopts negative pressure classification to realize comprehensive functions of separation and dust removal. In the process step of packaging and transportation, a production process in which a plurality of machine sets are connected in parallel is adopted, and the same product is collected and conveyed to a finished product storage bin by the same conveyor to realize the integration of packaging and shipping.

The invention discloses a preparation method for bainite, martensite and austenite complex-phase corrosion-resistant steel. The preparation method is characterized in that a few multi-alloy elements are added to mutually restrain, i.e., a structure range is obtained by widening an upper bainite structure, a thermal treatment way adopts quick-cooling from austenite to a BS point, upper and lower bainite strcutures are obtained by adopting slow-cooling temperature-varying at a medium temperature, and a martensite residual-austenite structure is obtained at equal temperature within a low-temperature range. The whole process is used for continuously producing to obtain wear-resisting steel which consists of upper and lower bainites, martensite and austenite, and the wear-resisting steel resistimpact and cutting abrasion under various environments as well as corrosion. The production process simplifies the process of controlling cooling speed, and facilitates the preparation method for thebainite, martensite and austenite complex-phase corrosion-resistant steel which is simple in large-scale control, is good in quality and is high in wear resistance.