78results about How to "Reduce safety hazards" patented technology

A method for casing job by using a top drive drilling unit is applied to the petrol cementing technique field, and is characterized in that a casing elevator is used for lifting a single casing which is buckled with a casing string oppositely; a top-driven casing device is driven to tightly clamp the single casing; the top drive drilling unit is driven to revolve, which allows the single casing to be connected with the casing string; an air slips of a drill stand is loosed, which allows a top-driven flying ring and the casing elevator to support the single casing and the casing string; the single casing and the casing string are lowered; the air slips of the drill stand is used for fixing the single casing; slurry is poured to the interior cavities of the single casing and the casing string through a chief axis hydrophthalmia of the top drive drilling unit and a central spindle hydrophthalmia of the top-driven casing device; and finally, all the casing strings are lowered to the well bottom. The method has the advantages of reducing working equipments, simplifying working process, being capable of revolving casing string and cycling slurry timely according to the actual needs, increasing the automatic degree of the casing job, and improving the production efficiency and safety.

The invention discloses a tissue culture and rapid propagation method of nobile-type dendrobium seedlings. The method comprises the following steps of: (1) selection and disinfection of an explant; (2) induction culture of protocorm; (3) proliferation and differentiation of protocorm; (4) strong seedling and rooting culture; (5) transplanting of test-tube plantlets. According to the method, tissue culture and rapid propagation of the nobile-type dendrobium seedlings are carried out by the method provided by the invention, the culture procedure is simple, the explant is free of pollution, the propagation coefficient is large, the production cost is low, the seedlings are high in quality, and the defects of low propagation coefficient and the like in the prior art are overcome.

The invention discloses a manufacturing method of a grade-A2 fireproof aluminum composite plate. The grade-A2 fireproof aluminum composite plate is manufactured from 83kg-93kg of calcium carbonate, 130kg-142kg of silicon micro-powder, 87kg-97kg of quartz sand, 10kg-15kg of pearlite, 7kg-12kg of polypropylene staple fiber, 40kg-50kg of silicon dioxide, 58kg-67kg of aluminium hydroxide, 12kg-27kg of zinc molybdate and 135kg-145kg of acrylic based emulsion. The method comprises the following steps of: 1, preparing materials; 2, discharging and pasting non-woven fabrics; 3, roasting, stripping the non-woven fabrics and rolling; 4, cooling, grinding, gluing and roasting; and 5, adhering, cooling and shearing. By adopting the manufacturing method of the fireproof aluminum composite plate, liquid materials are roasted into a solid state to form the core materials through roasting for eight times by an oven and rolling by a rolling mill, and the core materials and the aluminum plate are difficult to delaminate under the high-temperature condition, and the fireproof intensity is improved.

The invention discloses a double-cooling radiation test system and method. The double-cooling radiation test system is formed by a main cooling system, a water sleeve cooling system, a secondary cooling system, and matched purification and water supplementary systems. The main cooling system is a high-temperature high-pressure circuit and can be operated independently; the water sleeve cooling system belongs to a low-temperature low-pressure circuit and can be operated independently; the main cooling system and the water sleeve cooling system can be operated in parallel at the same time. The main cooling system and the water sleeve cooling system carry out independent cooling cycle flowing, heat generated in a pressure pipe is carried out by main cooling water, and heat generated outside the pressure pipe is discharged out by water sleeve cooling water. Otherwise, the main cooling system is static or microflows, and heat inside and outside the pressure pipe is carried away through thecircular flow of the water sleeve cooling system. The double-cooling radiation test system and the method provided by the invention are applied to a nuclear material and fuel element in-pile steady-state irradiation test, a power transient test, a fuel damage test, an in-pile water chemical corrosion test, isotopic irradiation production and the like.

The invention relates to a high temperature melt discharge pipe and a smelting furnace with the same. A tubular structure like a submerged bend is processed through high temperature resistant materials, a medium-frequency power supply coil winds on the outer wall of the submerged bend, and one end of the submerged bend is communicated with a discharge port arranged at the bottom of the smelting furnace. Melt deposited at the position of the submerged bend is cooled and solidified and blocks a discharge channel of the smelting furnace during smelting, and after smelting is finished, the medium-frequency power supply coil located on the outer side of the submerged bend is electrified, the condensed materials at the position of the submerged bend is subjected to heating and melting, accordingly melt in the smelting furnace is discharged through the high temperature melt discharge pipe, melt and the inner wall of the furnace do not contact with the air, and further potential safety hazards are reduced.

A ballast circuit for a discharge lamp capable of protecting the circuit when the lamp reaches its end of life with a cost effective circuit arrangement. The circuit includes a DC voltage sensing network for sensing a DC voltage which appears as a consequence of the lamp reaching its end of life. Upon the sensed DC voltage exceeding a threshold, a control is made to limit or stop supplying an output power to the lamp for protecting the ballast circuit from an otherwise generating excessive current. The sensing network is composed of a DC sensing capacitor and a resistor which are connected in circuit outside of a resonant circuit responsible for generating a high frequency voltage to operate the lamp. Thus, the DC sensing capacitor can be kept free from the high voltage generated by the resonant circuit and be of less cost for reducing a manufacturing cost.

The invention relates to a tissue culture and bud induction method for peonies, which is characterized in that the method comprises the following steps: a. peony plants are processed with bactericide, and filled with substrate, kept wet with plastic foil and refrigerated; b. when dormancy of peonies is about to be relieved, outer leaves of bulbils are removed, and the peonies are disinfected and washed by sterile water; c. the bulbils are peeled in an aseptic environment, 2-4 small leaves at basal part of the bulbils in buds and tips of upper leaves in buds are cut off, and the remainder parts are inoculated in solid substrate to be cultured; d. after inoculation the explants are placed in an environment with culture temperature in the range from 23 to 27 DEG C and with certain illumination to be cultured to form aseptic buds. The invention is characterized by easy disinfection, little pollution of mixed bacterium, and a rapid speed to obtain peony aseptic buds.

The invention belongs to the technical field of electrical control and relates to an intelligent operation and maintenance platform system for a subway station. The intelligent operation and maintenance platform system comprises monitoring objects, a monitoring device, a control center and an execution device. The monitoring objects comprise roller shutter doors, escalators and red flashing lamps,wherein the roller shutter doors and the escalators are internally provided with execution mechanisms respectively. The monitoring device monitors the monitoring objects and transmits monitoring information to the control center. The control center performs data processing and sends an instruction to the execution device. The execution device controls the working states of the monitoring objectsaccording to the instruction. According to the intelligent operation and maintenance platform system for the subway station of the invention, the roller shutter doors, the escalators and the red flashing lamps at a plurality of positions are remotely controlled in a centralized manner through an industrial personal computer; automatic control or manual remote control is realized; and the executionmechanisms of the roller shutter doors and the escalators (mechanical movement parts) can be monitored in real time, so that preventive repair is realized.

The invention discloses an insufficient voltage activating device for a lithium battery and relates to the technical field of lithium battery charging equipment. The insufficient voltage activating device comprises a lithium battery charging management IC (integrated circuit) and an activating circuit, wherein the activating circuit comprises an MCU (micro control unit) and a current-limiting float charging circuit, wherein a control output pin I/O of the MCU is connected with the enabled pin EN of the lithium battery charging management IC, and a third analog quantity input pin AD3 of the MCU is connected with the lithium battery and used for detecting the voltage of the lithium battery; one end of the current-limiting float charging circuit is connected with a power Vin, the other end of the current-limiting float charging circuit is connected with the lithium battery, and a current control end used for controlling the magnitude of current outputted by the current-limiting float charging circuit is connected with an analog quantity output pin DA of the MCU. The insufficient voltage activating device solves the technical problem in the prior art that a lithium battery is inconvenient to activate in the insufficient voltage state. The insufficient voltage activating device can activate the lithium battery in the insufficient voltage state, has high safety and reliability, facilitates prolonging the service life of the lithium battery, and is low in price.

The invention relates to a material hoister for constructional engineering. The material hoister for constructional engineering relates to the technical field of constructional engineering equipment, and comprises a rack, a top beam, a first driving wheel, a second driving wheel, a steel wire rope, a first hanging basket, a positive and reverse rotation motor and a second hanging basket, wherein the top beam is arranged on the top part of the rack through fixed bolts; the first driving wheel and the second driving wheel are sequentially embedded in the top beam; the second driving wheel is connected with a rotary shaft of the positive and reverse rotation motor; the positive and reverse rotation motor is arranged on the top beam through fixed bolts; one end of the steel wire rope is connected with the first hanging basket; the other end of the steel wire rope respectively penetrates through the first driving wheel and the second driving wheel so as to be connected with the second hanging basket. The material hoister for constructional engineering is simple in structure, reasonable in design and convenient to be operated, and the collision during the hoisting process can be effectively avoided, so the potential safety hazard is eliminated, and the working efficiency can also be improved, and the working progress is accelerated.

The invention discloses a special vacuum cleaner for cleanness of electric equipment. The special vacuum cleaner comprises a body, wherein a filter net cover clamping buckle, an insulated handle and a dust collecting barrel dismounting button are mounted on the front surface wall of the body from top to bottom sequentially, the rear surface wall of the body is connected with a power cord, a suction nozzle releasing button is fixed on the front surface wall of a detachable suction nozzle, a dust collecting barrel is arranged in the body, an outer filter and an inner filter net are placed in the dust collecting barrel, an inner air inlet assembly is fixed below the inside of the dust collecting barrel, an air suction motor is connected to the upper surface wall of the air suction fan, the air suction motor and the body are fixedly connected through hollowed-out motor support frames, and an HEPA (high efficiency particulate air filter) filtering net is mounted above the air suction motor and fixedly connected with the body through an HEPA filter net cover. Three filtering layers are arranged inside, sucked electrical equipment dust can be more thoroughly isolated, and meanwhile, the electric equipment can be more easily cleaned by means of a brush.

The invention discloses a coin liner of a bus money box and particularly relates to a bus money-box coin liner with a built-in cover board. The bus money-box coin liner comprises a shell 1, the cover board 2, a guide rail slot 3, a control circuit board 4, a motor assembly 5 and a gear module 6. The bus money-box coin liner has the advantages that 1, the cover board is arranged inside the coin liner and is controlled by an internal transmission mechanism, so that when a worker wants to take the coin liner, the cover board does not need to be inserted manually from the outside and after a box door is opened, the internal transmission mechanism closes the cover board, and similarly, when coins are taken at a casher center and after the box door is unlocked, the internal transmission mechanism opens the cover board and the cover board does not need to be operated by an external force, as a result, the operation process is reduced, the operation link is simplified and workload of the worker is reduced; and 2, the cover board is arranged inside the coin liner and a motor is matched with the transmission mechanism, so that the worker has no chance to contact the cover board at all, and the potential safety hazard link is reduced, safety performance of the product is greatly improved and safety guarantee is provided for casher management of bus companies.

The invention discloses an H-shaped steel producing process. The H-shaped steel producing process includes the following steps of assembling, welding, slag shoveling, polishing and grinding, conveyingand shape righting. The H-shaped steel producing process is easy to operate and high in automation degree and has few potential safety hazard points.

An automatic-lightening vehicular graphic display system based on an LED screen comprises a function selection module, a control module, an LED display screen control card, the LED screen, an automobile support, a control box and a photosensitive sensor, the control box is arranged in the automobile, the function selection module and the control module are arranged in the control box, the automobile support is fixed outside the automobile, the LED screen is arranged on the automobile support, and the LED screen is provided with the display screen control card capable of automatically adjusting luminance of the LED screen, and the photosensitive sensor is arranged outside the automobile. The function selection module transmits key input signals to the control module according to users' input; the control module processes the key input signals so as to enable the LED screen to transmit graphic display signals. The photosensitive sensor transmits light strength feedback signals to the control module according to the sensed light strength outside of the automobile. The control module transmits luminance adjustment signals to the LED display screen control card according to the light strength feedback signals, and the LED display screen control card can adjust luminance of the LED screen according to the luminance adjustment signals.

The invention relates to a multifunctional, smart and fashionable down garment. The multifunctional, smart and fashionable down garment comprises a garment body, wherein a wearable GPS alarming device is arranged on the garment body and connected with a mobile phone APP; the wearable GPS alarming device comprises an alarm, a multifunctional button, a loudspeaker and a microphone are arranged on the front side of the alarm, a smart GPS alarming chip electroplate is mounted on the back surface of the alarm through a waterproof adhesive bottom plate, and a charging socket is arranged on the alarm. Graphene fabric is arranged at shoulder parts and/or waist part of the garment body and spliced with lining of the garment body. The multifunctional down garment is formed by combining advantages of the wearable GPS alarming device and the graphene fabric and adopting small and exquisite functional structure design.

The invention discloses special equipment for internal space construction of a cylinder and a dome, and belongs to the field of buildings and industrial construction. The special equipment comprises ahandrail, a boom, a cantilever crane, a working platform, an amplitude change device, a climbing device, a tower and a revolving device; the cantilever crane is mounted on the working platform or theboom; the handrail and the working platform are mounted on the boom; the boom is mounted on the tower; the amplitude change device is mounted between the boom and the tower; the climbing device is mounted between the boom and the tower; and the revolving device is mounted on the tower. The special equipment can be used for construction of internal space of cylinder and dome buildings or equipment; and constructors or equipment can reach all construction points in the internal space of the cylinder and the dome for construction, so that needed engineering mechanical equipment in the construction operation is reduced, operators are reduced, the construction cost can be effectively reduced, the construction process is improved, the construction efficiency is improved, potential safety hazardfactors are reduced, and the construction safety is improved.

The invention discloses a pitaya gene HuAAE3 and application thereof in regulating and controlling high temperature stress resistance of plants, the nucleotide sequence of the pitaya gene HuAAE3 is shown as SEQ ID NO.1 or is a sequence completely complementarily paired with the SEQ ID NO.1, and the coded amino acid sequence of the pitaya gene HuAAE3 is shown as SEQ ID NO.2. The invention further discloses a preparation method of the pitaya gene HuAAE3. Research finds that the oxalyl-coenzyme A synthetase AAE3 of the plant expressed by the dragon fruit HuAAE3 gene participates in heat stress response, which is of great significance to comprehensive understanding of biological functions of the oxalyl-coenzyme A synthetase AAE3 in the plant. Meanwhile, the HuAAE3 gene is over-expressed by the inventor through a transgenosis method, and along with the increase of the expression quantity of the HuAAE3 gene, the resistance of arabidopsis thaliana to high temperature is improved. Therefore, the dragon fruit HuAAE3 gene and the corresponding protein can be applied to genetic engineering genetic breeding of crops, high-temperature-resistant crop varieties are cultivated, safety hazards caused by high temperature to food crops are reduced, and the dragon fruit HuAAE3 gene and the corresponding protein have important reference significance for related research on high-temperature tolerance of other crops.

The invention provides a hydraulic shock-absorbing tire, comprising: an outer tire and an inner rim, the outer tire is covered and fixed on the inner rim, the inner side of the outer tire is provided with an anti-shift groove, and both sides of the outer tire are provided with screw holes; The rim is provided with a hydraulic pump, an oil delivery pipe, and a fixing ring from the inside to the outside. There are screw holes on the fixing ring. There are hydraulic rods on both sides of the inner rim. The hydraulic pump is connected to the oil delivery pipe. On the fixing ring, the bottom of the hydraulic rod is fixed on the oil delivery pipe, the top of the hydraulic rod and the top of the hydraulic rod on the other side of the inner rim are fixed on the anti-shift plate, and the oil delivery pipe connects the hydraulic cylinder of each hydraulic rod and the hydraulic pump together, the present invention It can effectively prevent tire bursting, reduce various safety hazards, no need to repair tires, no need to inflate, not afraid of puncture pressure, tire breakage can still drive, it can drive under bad road conditions, open flames, etc., strong and durable, reduce manufacturing Cost, prolong service life, good shock absorption effect.