35results about How to "Shorten pressurization time" patented technology

The invention provides a supercritical fluid foaming polyolefin material and a preparing method thereof. The supercritical fluid foaming polyolefin material is prepared through the following steps that a polyolefin sheet is prepared, and the melting point of the polyolefin sheet is Tm; radiation crosslinking is carried out on the polyolefin sheet; the crosslinked polyolefin sheet is put into a pressure container for high-pressure nitrogen impregnation, and the impregnation temperature T1 is equal to Tm+(30-120) DEG C; low-temperature heating foaming is carried out, and the foaming temperature T3 is equal to Tm+(20-50) DEG C, and is smaller than T1. By the adoption of the technical scheme, the requirement for material crystallinity is avoided, the time of reaching a dissolution saturation state of gas is greatly shortened, efficiency is improved, and the foaming material which is fine and uniform in bubble, low in density, high in mechanical strength and regular in shape can be obtained.

The present invention discloses a modular method for manufacturing circuit boards, which is a method of manufacturing multilayer printed circuit boards with blind and buried vias structure by using basic components as the assembly units. The method comprises the steps of producing electric circuits on the surface of a copper clad laminate by photolithographic and etching methods, pressing a dry film dielectric onto the surface of the laminate by the dry film lamination method after the electric circuit layer is formed, drilling a via and plugging a plastic conductive material into the via to obtain a basic component. When a multilayer printed circuit board having the blind and buried via structure is manufactured, the basic component serves as an assembling unit to stack with other circuit board having blind via and single-sided or double-sided electric circuits according to the multilayer circuit board mode to perform a heating and pressurization procedure and form a multilayer circuit board with blind and buried via structure. Such arrangement not only saves the time for aligning layers, pressing and blind via filled plating of the prior-art technology, but also enhances the yield rate and reduces the failure cost.

The invention relates to discloses self control gas liquid dual purpose leak-detector. It includes air source, pressure adjusting unit, differential pressure test unit, control unit connected with the pressure adjusting unit set adjusting valve and differential pressure test unit includes differential pressure transducer, filter, pressure protective valve, prove, and standard parts. The probe is gas liquid dual purpose detecting device. The leak detector of the invention can be used to detect gas or liquid leakage to realize one machine has dual purpose.

The invention discloses a method for extracting chestnut flower volatile substances by using a supercritical CO2 fluid. The method comprises the following steps of: picking fresh chestnut flowers at a full-bloom stage; drying at a low temperature; smashing; storing at a low temperature; adding into an extraction kettle; connecting a CO2 supercritical extracting instrument; adjusting the pressure and temperature of the extraction kettle; extracting in a static state; turning static extraction into dynamic extraction; simultaneously, raising the pressure and the temperature of the extraction kettle; and collecting an extract in a dynamic extracting process, wherein an extract product is a yellow-green oily substance. In the method, volatile substances in chestnut flowers are extracted by using a supercritical CO2 fluid extracting technology, and extracting conditions are changed alternatively through a programmed temperature raising and programmed pressure raising method for extracting and collecting chestnut flower volatile substances. In the method, chestnut flowers are taken as a raw material; the extraction method has the characteristics of rapidness, easiness, convenience, environment friendliness, high efficiency and the like; and the extracted chestnut flower volatile substances can be applied to plant protection, medical and functional foods.

The invention discloses a device and a method for simulating a test of pore water pressure of an asphalt pavement. The device comprises at least two pressure containers, wherein a binder is filled between the bottom part of an asphalt concrete specimen in each pressure container and an opening annular part of an opening container; the side wall of each specimen is coated with a sealing part; a first pressure sensor is arranged at the side wall of each pressure container and is used for testing the external water pressure of the corresponding specimen; a second pressure sensor is arranged at the side wall of each opening container and is used for testing the bottom water pressure of the corresponding specimen; the opening containers are communicated by a pipeline which penetrates through the side walls of the pressure containers. The method has the advantages that by adopting a control process meeting different wheel load functions and characteristics, the specimens in the pressure containers are successively and respectively loaded, the internal and external water pressures of each specimen are effectively sealed and isolated, and the external water pressure and pore water pressure during loading are monitored in real time. The device has the advantages that the directional flowing of pore water is realized, and a dynamic response rule of the pore water pressure of asphalt concrete under the action of dynamically-changed external water pressure can be tested.

The invention provides a porcelain insulator detection method and a porcelain insulator detection circuit, and the porcelain insulator detection method comprises the steps: S101, respectively transmitting an impact voltage to a normal porcelain insulator and a to-be-detected porcelain insulator through an impact voltage generator, and obtaining voltage change waveform data through a measurement loop; S102: according to the obtained voltage sequence and time sequence, obtaining the charge quantity of the normal porcelain insulator, the first equivalent charge quantity and the second equivalentcharge quantity of the to-be-detected porcelain insulator; and S103, judging whether the to-be-detected porcelain insulator is a deteriorated porcelain insulator or not according to whether the secondequivalent charge quantity is smaller than the product of the first equivalent charge quantity and a preset threshold value or not. The impulse voltage generator sends impulse voltage to the porcelain insulator, the short-time high voltage of the impulse voltage is used for breaking through internal defects of a porcelain part of the porcelain insulator and exposing internal insulation, the problem of missing detection of a deteriorated porcelain insulator is avoided, the pressurization time is short, the power is low, the energy consumption is low, and miniaturization and large-batch detection of detection equipment are facilitated.

The invention relates to a nanofluid-based electro-hydraulic breakdown and infrared thermal radiation coordinated punching device and method, the device comprises a drill rod, a movable hole packer, an electro-hydraulic breakdown assembly and an infrared radiation heating assembly, the punching device is installed at a planned punching position, the hole packer is used for sealing a hole, and theelectro-hydraulic breakdown assembly and the infrared radiation heating assembly are installed at the same time. Then a liquid injection pump station is used for injecting nanofluid into the liquid injection cavity, then a high-voltage electric pulse generator supplies power to the positive and negative electrode plates to trigger the electro-hydraulic effect to conduct punching, and finally an infrared heater is started to crack the coal body through thermal stress. The high-pressure electro-hydraulic punching technology and the infrared thermal radiation heating technology are combined by adopting the nanofluid which is an energy transport working medium with high heat transfer performance, the advantages that electro-hydraulic breakdown is convenient and easy to precisely control can beexerted, the coal body can be rapidly heated and cracked by utilizing infrared radiation heating, and the purposes of coal seam permeability improvement and crack development are efficiently achieved. The method is simple, reliable in performance and convenient to maintain, and has a wide engineering application prospect.

The invention discloses a rapid board-splicing water-based adhesive. The rapid board-splicing water-based adhesive comprises the following materials in parts by weight: 35 to 40 percent of a macromolecular acrylic acid polymer, 5 to 10 percent of industrial corn starch, 30 to 35 percent of calcium powder, 10 to 15 percent of 15 percent polyvinyl alcohol solution, 0.05 to 0.1 percent of a wetting agent, 0.1 to 0.5 percent of a dispersing agent, 0.1 to 0.5 percent of a mildewproof agent, and 10 to 15 percent of water. Through the proportion of the materials, the rapid board-splicing water-based adhesive has the advantages of long useable time, high drying speed and high adhesion strength when being used cooperatively with 10 to 15 percent of a curing agent, can meet the pressure relief requirement 15 minutes after board splicing, greatly shortens the pressurizing time and improves labor efficiency and economic benefit for customers.

The wiper blade nozzle support comprises a wiper support body used for installing a wiper blade, a liquid inlet hole and a plurality of liquid spraying holes are formed in the wiper support body, the liquid inlet hole is used for guiding washing liquid into the wiper support body and spraying the washing liquid out of the liquid spraying holes, and the liquid spraying holes are located in the side, in the wiping direction of a windshield, of the wiper support body; according to the wiper blade nozzle support, the pressurizing time of a washing pump each time can be shortened, the washing liquid spraying area is always dynamically kept in front of the wiping direction of the wiper blade, washing liquid is sprayed in the wiping stage of the wiper blade, the washing liquid is effectively used for cleaning a windshield, consumption of the washing liquid is reduced, meanwhile, the cleaning effect is improved, and energy conservation and consumption reduction are facilitated.

The invention discloses a cylindrical gap type continuous filter press. A slurry homogeneous stirrer is arranged in a slurry homogenizing tower, and a slurry outlet pipe of the slurry homogenizing tower is fixedly communicated with a high-pressure slurry inlet through a high-pressure slurry pump. The filter press consisting of a dewatering part and a heating part also comprises a worm drive pair, a discharging circular seam regulator, a cylindrical inner steel cylinder, a cylindrical outer steel cylinder, a thermal-protective coating, an inner water jacket, an outer water jacket and a heating furnace, wherein the inner steel cylinder and the outer steel cylinder of the dewatering part at the upper part are uniformly provided with a plurality of filtering holes along the circumference, and the inner steel cylinder and the outer steel cylinder of the dewatering part at the lower part are internally provided with the heating furnace; and the inner water jacket is fixedly communicated with the outer water jacket through an inner water jacket communicating pipe and an outer water jacket communicating pipe which are symmetrically arranged front and back, and the inner water jacket communicating pipe and the outer water jacket communicating pipe are arranged between the inner steel cylinder and the outer steel cylinder. The cylindrical gap type continuous filter press has the advantages of good dewatering property, wide application range, capability of realizing continuous and automatic control, and low operation cost.

The invention provides a 3D printing high-pressure rapid pressurizing device which comprises an air compressor, a printing bin and an air storage tank. The air compressor is connected with the printing bin and the air storage tank through a reversing valve and a high-pressure air pipe, the printing bin and the air storage tank are connected through a pipeline, a bin tank communicating control valve is arranged on the connecting pipeline, and a bin door and a ventilation pipe are arranged on the printing bin. A one-way valve is arranged on the ventilation pipe, pressure sensors are arranged onthe printing bin and the air storage tank, a control unit is connected with the pressure sensors, the bin tank communicating control valve and the reversing valve, and the air compressor, the printingbin and the air storage tank form a circulation body through pipelines, the bin tank communicating control valve and the reversing valve, wherein the bin tank communicating control valve and the reversing valve are installed on the pipelines. Through a simple circulating device, the pressurizing time can be greatly shortened by adopting the method, energy waste is reduced, and the printing cost is low.

The invention discloses an LNG (Liquefied Natural Gas) pressurization control system. Liquefied natural gas is stored in an LNG storage tank, and the liquefied natural gas is converted into gaseous natural gas through a vaporizer device and stored in a first gaseous natural gas buffer tank; a pressure sensor detects the air pressure of a second gaseous natural gas buffer tank and sends the air pressure to a pressurization control device; when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the gaseous natural gas in the first gaseous natural gas buffer tank is pumped into the second gaseous natural gas buffer tank, and when the air pressure of the second gaseous natural gas buffer tank reaches the air pressure for starting the natural gas engine, a natural gas engine is started; and when the pressurization control device detects that the received air pressure is larger than a preset maximum value, the pressurization control device stops working. The pressurization control device is arranged for air exhaust and pressurizing, rapid pressurizing can be achieved in a short time, engine starting is achieved in a short time, and driving convenience is improved.