58results about How to "Make sure there is no air leak" patented technology

The invention discloses an initiation state inspection method of an exploder for simulating a high G value test of a centrifuge. The method comprises the steps of establishing an explosion test devicefor a series of explosion tests under conditions of different explosive loads Wi, explosive load submersion and air pressure equivalent water column heights, measuring a shock wave peak Pmi and a bubble pulsation period Ti of underwater explosion of the ith test, performing fitting operation with a theoretical formula to form an equivalent explosive load coefficient n, and further providing an initiation state of an explosive and a detonator. According to the method, data of the measured shock wave peak and the bubble pulsation period are compared with data of the empirical formula; a least square fitting result is processed, so that the equivalent explosive loading coefficient and an equivalent explosive quantity are obtained; judgment and inspection of the initiation state of the explosive are achieved; the underwater explosion test of the centrifuge is simulated actually; and the method has the characteristics of good convenience, stability and reliability.

The present invention belongs to the technical field of daily life, and particularly relates to a human mechanics mattress, which comprises: a bed frame; an inflation layer arranged on the upper end surface of the bed frame in a covering manner; a first through hole and a second through hole, wherein the first through hole and the second through hole are uniformly arranged inside the inflation layer in a through manner at intervals; a plurality of springs arranged inside the second through hole in a through manner; an adjustment layer arranged on the upper end surface of the inflation layer in a covering manner; a plurality of pressure sensors uniformly embedded into the plurality of concave grooves arranged on the upper end surface of the frame body; a second gas chamber uniformly embedded above the plurality of the pressure sensors arranged inside the plurality of concave grooves arranged on the upper end surface of the frame body; an inflation pump for inflating the inflation layer through an inflation pipeline; and a microprocessor. According to the present invention, the human mechanics mattress has characteristics of compact structure and reasonable design, and can quickly adjust the deformation state of the mattress upper surface according to the difference of the user weight so as t ensure the user sleep quality and the health.

The invention discloses a vacuum environment-friendly explosive welding workshop which comprises a workshop body, a vacuum pump and an explosive welding table. A vacuum gas suction opening is formed in a roof beam at the upper end of the workshop body. The vacuum pump communicates with the vacuum gas suction opening through a vacuum suction pipe. A vacuum valve is further installed at the positionof the vacuum gas suction opening. The explosive welding table is installed at the bottom end of the inner side of the workshop body. By means of the vacuum environment-friendly explosive welding workshop, due to the fact that the interior of the airtight workshop body is sucked to be in a vacuum state through the vacuum pump, impact waves and noise generated by exploding are reduced, in addition, energy generated by explosives does not make contact with air and is dispersed, and effective energy of an explosive composite plate is improved; and water-resisting type low-exploding-speed emulsion explosives are selected as the explosives, a water column covering layer is broken at the exploding moment of the explosives, the water column covering layer is broken, splashed flying mist attenuates the exploding impact waves and noise, meanwhile, part of waste gas is diluted, and part of dust is attached; and the rest of waste gas and dust can be recycled in the airtight workshop through a water mist spraying and gas extracting and exhausting system after standing, and the environment is prevented from being polluted.

The invention provides high-throughput four-point-probe in-situ resistance measuring equipment for material chips, and belongs to the technical field of material testing. The equipment comprises a high-throughput four-point-probe detector, a high temperature and high pressure resisting airtight tank, a sample rack, a multi-channel four-point-probe resistance tester, a transmission cable and data recording software. The sample rack is located in the high temperature and high pressure resisting airtight tank. The high-throughput four-point-probe detector is mounted on the sample rack, and is connected with the multi-channel four-point-probe resistance tester through the transmission cable. The data recording software is installed on an upper computer, and is used for receiving data measuredby the multi-channel four-point-probe resistance tester. The high-throughput four-point-probe in-situ resistance measuring equipment has the advantages that changes of four-point-probe resistors of asmuch as 64 samples along with changes of parameters such as time, air pressure and temperature can be measured and recorded in high-temperature high-pressure gas environments, and the equipment has high accuracy and reliability, high data collection frequency, low hardware cost and a simple operation method and can meet accurate measurement requirements on few sample resistors.

The invention discloses an anti-pressing packaging box. The technical problems that in the prior art, a packaging box cannot resist pressing, and objects in the packaging box cannot be effectively protected are solved. The anti-pressing packaging box comprises a box body formed by side walls, a bottom plate and an upper cover plate. Elastic airbags are arranged on the inner surfaces of the side walls. Each elastic airbag is provided with at least one air inlet nozzle. The air inlet nozzles extend out of the box body. The inner surfaces of the air inlet nozzles are coated with binding agents. Air inlet guide pipes for preventing the air inlet nozzles from being automatically bonded are pasted on the binding agents. In the use process, the objects are firstly placed in the packaging box; and then the elastic airbags are inflated through the air inlet nozzles; the air inlet guide pipes are taken down till the objects in the box cannot move freely, the air inlet nozzles of the elastic airbags are bonded through the binding agents, and it is guaranteed that air leakage is avoided. In the transportation process, the elastic airbags can achieve the buffer function to protect the objects in the box from being impacted, and damage is avoided. The anti-pressing packaging box can be used for transportation and storage of fruits or fragile products.

The invention belongs to the technical field of daily life and particularly relates to a self-adaptive health-care mattress. The self-adaption health-care mattress comprises a bedstead, an inflation layer covering the upper end surface of the bedstead, first through holes, second through holes, multiple springs, an adjustment layer, multiple pressure sensors, second air cavities, an inflation pump and a microprocessor, wherein the first through holes and the second through holes are formed in the inflation layer in a through manner at equal intervals; the multiple springs are arranged in the second through holes in a through manner; the adjustment layer covers the upper end surface of the inflation layer; the pressure sensors are uniformly embedded in multiple grooves in the upper end surface of the bedstead; the second air cavities are uniformly embedded in the upper parts of the multiple pressure sensors in the multiple grooves in the upper end surface of the bedstead; the inflation pump inflates the inflation layer through an inflation pipeline. The self-adaptive health-care mattress is compact in structure and reasonable in design, the deformation state of the upper surface of the mattress can be quickly adjusted according to the weight of different users, and the sleeping quality and body health of users are guaranteed.

The invention discloses a preparation process of a heat-clearing and detoxifying veterinary traditional Chinese medicine. The veterinary traditional Chinese medicine is prepared from the following components in parts by weight: 3-6 parts of folium isatidis, 5-7 parts of radix isatidis, 5-7 parts of gypsum, 5-6 parts of rheum officinale, 4-5 parts of compound of glauber-salt and liquorice, 4-6 parts of pericarpium citri reticulatae, 4-6 parts of astragalus membranaceus, 5-7 parts of scutellaria baicalensis, 3-5 parts of cinnamon, 3-6 parts of fried yam, 1-3 parts of codonopsis pilosula, 3-5 parts of Lysimachia christinae hance, and 3-5 parts of schizonepeta. By using a freeze dryer provided by the invention, the problems that an existing vacuum heating drying method enables active pharmaceutical substances with poorer heat resistance to lose activity, and volatile active pharmaceutical substances are easy to volatilize and lose in the heating drying process can be solved.

The invention relates to an aerosol sampling device, in particular to an aircraft, in particular to a rotor unmanned aerial vehicle-mounted low-energy-consumption aerosol sampling device and an aircraft. The invention aims to solve the technical problems of overlarge sampler volume, overhigh energy consumption and poor representativeness of a sampled product when a rotor unmanned aerial vehicle-mounted aerosol sampling device is adopted for sampling in the existing aerosol sampling and observation. The sampling device comprises a shell, an exhaust pipe, a non-woven fabric filter material, a pressing ring, a pressing plate, a front cover and an air inlet pipe, one end of the shell is open, and the other end of the shell is provided with a bottom plate; external threads are arranged on the outer wall of the open end of the shell, and an annular groove is formed in the inner wall of the open end of the shell along the circumference; the exhaust pipe is mounted on the bottom plate; the non-woven fabric filter material is conical, the opening of the non-woven fabric filter material is pressed at the annular groove by the pressing ring, then the pressing ring is pressed by the front cover and the pressing plate, and the air inlet pipe is arranged on the front cover. The aircraft carries the sampling device and a gas flow type sensor.

The invention belongs to the technical field of daily life, and particularly relates to a hardness-adjustable health-care mattress. The hardness-adjustable health-care mattress comprises a bed frame, an inflation layer, first through holes, second through holes, a plurality of springs, an adjustment layer, a plurality of pressure sensors, second air cavities, an inflator pump and a microprocessor. The inflation layer covers the upper end face of the bed frame; the first through holes and the second through holes are formed in the inflation layer at uniform intervals in a communicated mode; the springs are arranged in the second through holes in a communicated mode; the adjustment layer covers the upper end face of the inflation layer; the pressure sensors are evenly embedded in a plurality of grooves formed in the upper end face of a frame body; the second air cavities are evenly embedded to the upper side of the pressure sensors in the grooves in the upper end face of the frame body; the inflator pump inflates the inflation layer through an inflation pipeline. The hardness-adjustable health-care mattress has the advantages of compact structure, reasonable design and capability of rapidly adjusting the deformation state of the upper surface of the mattress according to different weights of users to guarantee users' sleeping quality and physical health.

The invention relates to the technical field of medical tracheal intubation catheters, and discloses a modular tracheal intubation catheter of a breathing machine. The modular tracheal intubation catheter comprises a tracheal intubation catheter, a subglottic flushing tube, a catheter air pipe, a controller, a pressure sensor and a pressure monitor, wherein a catheter air bag is arranged at one end of the tracheal intubation catheter, and a breathing machine connector is arranged at the other end of the tracheal intubation catheter; one end of the catheter air pipe is connected with the catheter air bag, and the other end of the catheter air pipe is connected with the pressure monitor and a first electromagnetic valve; an air inflation device is connected with the first electromagnetic valve; the pressure sensor is arranged in the catheter air bag and is in communication connection with the pressure monitor; one end of the subglottic flushing tube is connected with the tracheal intubation catheter, and the other end of the subglottic flushing tube is connected with a negative-pressure suction device through a second electromagnetic valve; the controller is in communication connection with the first electromagnetic valve, the second electromagnetic valve and the pressure monitor separately. Through the setting of the controller, the modular tracheal intubation catheter has the functions of automatically managing the air bag and conducting flushing, effectiveness during mechanical ventilation of a patient after insertion of the tracheal intubation catheter can be guaranteed,and meanwhile, the occurrence rate of VAP is reduced.

The invention provides a gas-liquid separation device, and relates to the technical field of gas-liquid separation. The gas-liquid separation device comprises an outer tube and an inner tube, the upper end of the outer tube is provided with a first opening for inserting the inner tube, and when the inner tube is inserted into the outer tube to a specified depth, the inner tube is in sealed connection with the outer tube at the first opening; the outer tube is further provided with a first liquid inlet and a gas outlet for discharging gas separated from a liquid, a first switching valve is installed at the gas outlet, and the first switching valve is in a normally closed state; and the lower end of the inner tube is provided with a second liquid inlet, the inner tube communicates with the outer tube through the second liquid inlet, the part, located outside the outer tube, of the inner tube is provided with a liquid outlet, and the liquid from which the gas is separated is discharged from the liquid outlet. The device provided by the invention alleviates the technical problems that a gas-liquid separation device used in a chemical conveying process in the prior art has a complicated structure and cumbersome installation and cannot ensure continuity of chemical conveying.

The invention discloses a dam body damage explosive quantity estimation method based on underwater explosion test measurement results. The dam body damage explosive quantity estimation method includesthe steps: acquiring the critical value of explosion impact load peak pressure applied to a dam body under critical damage conditions according to dam parameter simulation; building an underwater explosion test device based on a detonator and explosives, performing series explosion tests under the condition of determined explosive load, charging submerged depth and inflation pressure in a container, measuring the impact wave peak value of underwater explosion and acquiring the relationship between the explosive load and the underwater impact peak pressure by fitting; finally, estimating dam body damage explosive quantity. The dam body damage explosive quantity estimation method has the advantages of simplicity, convenience and low cost.

The invention relates to a vacuum storage device which comprises a cup body, a top cover, an inner cover and a bottom cover. The cup body is composed of an inner lining and an outer lining which are formed integrally. The inner lining is a cylinder with the top open. The bottom of the outer lining is open. An opening in the top of the inner lining is detachably covered with the top cover. The top cover comprises a top wall, an outer side wall and an inner side wall. An exhaust cushion and a push button are arranged on the top wall. An elastic valve used in cooperation with the push button is fixed to the inner side of the top wall. At least one first through hole is formed in the top of the outer lining. The first through hole is located between the outer side wall and the inner lining. The top of the outer lining is covered with the outer side wall through a first sealing ring. The inner cover is fixed to the bottom of the inner side wall. An I-shaped air valve which can be restored through a spring is arranged on the inner cover. An opening in the bottom of the outer lining is covered with the bottom cover in a sealed mode. According to the vacuum storage device, both the heat preservation function and the freshness preservation and bacteriostasis function are achieved, the sealing performance is good, and the vacuum storage device is suitable for storing objects for a long time.