2054results about How to "Guaranteed air tightness" patented technology

The invention discloses a glass fiber reinforced nylon colored insulated strip used for an aluminum alloy door and window. The compositions by weight portion of the glass fiber reinforced nylon colored insulated strip are: 100 portions of nylon resin, 5 to 50 portions of glass fibers, 0 to 50 portions of inorganic filler, 5 to 25 portions of toughening agent, 0.3 to 5 portions of coupling agent, 0.3 to 5 portions of dispersing lubricant, 0.2 to 5 portions of antioxidant, 0.1 to 1 portion of light stabilizer, 0.1 to 1 portion of heat stabilizer and 2 to 10 portions of colored masterbatch. The invention also discloses a method for preparing the colored insulated strip. The glass fiber reinforced nylon colored insulated strip solves the problems that the masterbatch and the filler are difficult to disperse and nylon 66 is easy to change color during the processing procedure; the insulated strip products have various colors, superior performance and beautiful appearance; and the glass fiber reinforced nylon colored insulated strip realizes perfect matching with the window color, can achieve the beautility effect, meets and enlarges the demand of clients and the market, and is favorable for promotion, use and development of the glass fiber reinforced nylon 66 insulated strip.

The invention discloses a vacuum insulator surface charge three-dimensional measurement apparatus, belonging to the insulation measurement and charge measurement technical field under the vacuum environment. The measurement apparatus is composed of an insulator to be measured, a test electrode, a static probe, a probe support, a probe radial motion mechanism, a probe rotation control mechanism, a probe rotary motion control mechanism, a stepping motor and a probe motion control panel, wherein a high voltage electrode is fixed to the top panel of a vacuum test cavity, a ground electrode is fixed to the central section of a probe rotary table, the insulator to be measured is placed between a high voltage electrode and a ground electrode, and the probe rotary table is supported on the bottom panel of the vacuum test cavity. The invention provides the vacuum insulator surface charge three-dimensional measurement apparatus, which can realize insulator surface charge three-dimensional measurement in all radial directions and all angles through the radial control mechanism and the rotary control mechanism, meanwhile guarantee that a probe is far from the surface of the insulator to be measured in compression or not measuring charges, and possess higher charge resolution and spatial resolution.

This invention relates to original position test device for ceramics fiber high temperature deformation, which comprises high temperature gas furnace process system and optical measurement system, wherein, the former system comprises inner furnace, outer furnace, universal test machine, load sensor, water cooling and sealing system and temperature control device; the later system comprises photoelectrical stretching meter, data collection process system, intervene filter device and strong light source; the high temperature furnace adopts double structure with inner one of high temperature and outer one for vacuum to ensure the gas sealing property.

Provided is an intelligent tunnel lining trolley, characterized by comprising a door-shaped main steel frame, a concrete pouring informationized monitoring system, an end template, a template cleaningand surface lubricating system, an automatic running gear, and a layered window-by-window pouring and cleaning system. The tunnel lining trolley is simple in structure and reasonable in design, and real-time monitoring of each parameter in a concrete pouring process is realized, automation degree of equipment is improved, cleaning and template surface lubrication operation flow are simplified. The intelligent tunnel lining trolley provides convenience for on-site management and construction, and has certain environmental protection property and very high security.

The invention belongs to the technical field experimental instruments, which relates to a multi-functional reaction device used for chemical engineering experiment. The multi-functional chemical engineering experiment device comprises a chemical reaction kettle, a control system and a feeding and discharging and metering system of reaction materials. The chemical reaction kettle adopts a double-layer high-transparent visible kettle body. An upper kettle cover and a lower kettle cover are made of stainless steel materials. The double-layer kettle body adopts conduction oil with high degree of transparency to heat, and the agitation is carried out by adopting strong magnetic force under static sealing. The control system comprises an in-kettle temperature measuring device, a kettle sleeve temperature measuring device, an in-kettle pressure measuring and transmitting device, a motor rotation speed measuring and transmitting device. The control system is connected with a control panel, andcan be connected with a computer to realize remote operation. The feeding and discharging and metering system of reaction materials comprises a feeding and metering system and a backflow separating and metering system of liquid and gaseous reaction materials. The multi-functional chemical engineering experiment device adopts a clasp or bolt connecting structure, wherein clasps and bolts are standardized and general and can be interchanged. The components can be added or cut voluntarily according to the change of the technique. The invention can be applied widely.

The present invention relates to the pipe fitting performance detection equipment manufacturing technology field, in particular to an automobile intake pipe air tightness detection device and a detection method. The device comprises a rack, a water tank, an elevating device and a detection bench, and also comprises a gas source interface and a control device. The detection bench comprises a clamp arranged on a pedestal, one end of the clamp is equipped with a plug, and the other end is equipped with an inflation device. The inflation device is communicated with the gas source interface via a reducing valve, an elevating hydraulic cylinder is connected above the inflation device, and the inflation device moves up and down under the driving of the elevating hydraulic cylinder. The control device is electrically connected with the elevating device, the inflation device and the elevating hydraulic cylinder separately. The air tightness detection device of the present invention is reasonable in structure and high in detection efficiency, guarantees the processing quality of an intake pipe, realizes the automatic control of a whole process, realizes the air tightness detection by being equipped with a pressure sensor and the vent valve and without needing to be immersed in the water tank, enables the suitable range and the practicality to be improved, and also realizes the air tightness automatic determination.

The invention provides a method for vacuum packaging MEMS device by using low temperature co-fired ceramic substrate, comprising the following steps: first using the low temperature co-fired ceramic multilayer circuit structure and three-dimensional wiring to fully embed each passive component and transmission line etc. into the substrate dielectric; then bonding or welding the MEMS device onto the substrate and finishing the electrical connection; finally gaining the vacuum packaging for MEMS device by directly taking the integration of low temperature co-fired ceramic substrate with MEMS device as the base of the package, the metal package for traditional hybrid integrated circuit as the cap, and combining with traditional sealing methods, such as laser seal, land seal and metal tube seal. The technology conditions of the method has advantages of simple to realize, low in cost and easy to batch processes, and realizes vacuum seal for leads, greatly reduces leak bias rate, increases vacuum lifetime performance, particularly applicable to vacuum packaging for application of radio frequency/microwave and inert etc. oriented MEMS devices.

Hygienic mask (1) for aircraft crewmember comprising a first area (3) made of an air filtering tissue and a second area (5) made of a flexible material, said second area (5) surrounding the first area (3) and being attached to the edge of said first area (3). The hygienic mask (1) comprises an air filter (43) including the second area (5) and a retaining element (70) including the first area (3), and the air filter (43) is removably fixed directly to the retaining element (70).

The invention discloses a turbulence device for a postcombustion chamber of a hybrid rocket engine, which is suitable for ground heat run test of the hybrid rocket engine, is applied to a central single-channel hybrid rocket engine, but is not limited by specific propellant forms. The turbulence device comprises a combustion chamber component, a spoiler component, a spoiler postcombustion chamber component, a sealing and connecting component and a spray pipe component. The spoiler component and the spoiler postcombustion chamber component are combined into a whole so as to be connected with the spray pipe component through the sealing and connecting component and the spoiler postcombustion chamber component. The spoiler component consists of an internal metal spoiler and an external heat insulating structure, and spoiling holes are uniformly distributed in a circle taking the axis of the engine as the center. The spoiler component is used for realizing the turbulence function in gas in the central area, requirements on structural strength and thermal protection of the turbulence device can be satisfied during the working process of the engine, all the components are connected through a stepped fold line mode and O-shaped sealing ring connection, so that the requirements on airtightness and thermal protection are ensured during the working of the engine.

The invention belongs to the field of precision sheet metal processing, and relates to a lightweight wall panel superplastic forming production method. The method comprises the following steps: 1, performing flat stretching to parts according to the sizes of the parts; 2, computing the size of a wall panel blank after stretching and cutting; 3, performing polishing, pickling and other surface treatment to the blank; 4, soldering an air intake pipe; 5, placing a superplastic formed blank into a mold cavity, keeping warm and compounding the mold, wherein the blank is bent into a preset shape; 6, filling high-pressure inertia gas into a sealed space to perform superplastic forming; 7, completing the superplastic forming, and thus obtaining the bent wall panel. The lightweight wall panel superplastic forming production method has the advantages that: the superplastic forming is adopted, so that the generation of springback, wrinkle, crack and other defects can be effectively avoided, and requirement on the dimensional accuracy of the parts is ensured.

The invention relates to a sectional wave load testing model for an air cushion vehicle. The model comprises an air cushion vehicle model body, and is characterized in that the air cushion vehicle model body has a sectional structure, and consists of six modules, wherein a gap is formed between every two adjacent modules; the modules are fixedly connected through measurement beams.

The invention discloses a gas bulging forming method of large-sized thin-walled aluminum alloy ball-segment skin. The gas bulging forming method includes the steps: 1) feeding according to the size of the ball-segment skin so as to obtain a sector plate with process allowance; 2) welding the sector plate for the ball-segment skin into a conical barrel; 3) welding a process blind to a small end of the conical barrel, and welding a process flange to a large end of the conical barrel so as to form a ball-segment skin billet; 4) placing the ball-segment skin billet into an inner cavity of a heated gas bulging forming die, closing an upper cover of the gas bulging forming die, and forming a closed cavity between the ball-segment skin billet and the upper cover; 5) feeding compressed gas into the closed cavity until the ball-segment skin billet is attached to the wall of the inner cavity of the gas bulging forming die so that the ball-segment skin is formed; and 6) cutting off the process allowance on the formed ball-segment skin according to the size requirements of the ball-segment skin so that a finished product is obtained. The ball-segment skin prepared by the method only has one welding seam so as to be good in integrality, size precision and surface quality of parts are high, and cost for the die is low.

The invention discloses an axial injection end combustion solid-liquid rocket engine structure which comprises an engine head cover, a solid propellant shell, a solid propellant heat insulating layer, end combustion solid propellants, a spray pipe shell and a spray pipe heat insulating layer. The engine head cover is mounted at the front end of the solid propellant shell, the spray pipe shell is mounted at the rear end of the solid propellant shell, the engine head cover is provided with an air inlet channel, the end combustion solid propellants are coaxially arranged in the solid propellant shell, a constant volume cavity is formed between the front end faces of the end combustion solid propellants and the rear end face of the engine head cover, each end combustion solid propellant is provided with a plurality of axial injection holes with small diameters, the flow rate of oxidizing agents in the injection holes is high, and combustion reaction only occurs at the end faces of the end combustion solid propellants; the joint between the solid propellant shell and the engine head cover and the joint between the solid propellant shell and the spray pipe shell are respectively provided with a sealing structure, so that air impermeability of an engine is guaranteed; the heat insulating layers are arranged in the solid propellant shell and the spray pipe shell, so that thermal protection performance of the engine during operation is guaranteed. Thus, performance of the engine is improved, meanwhile the filling fraction of the engine is improved, the slenderness ratio of the engine is reduced, and the application rage of engine is widened.

Valve connector for infusion medical lines including an external tubular body (1) with an inlet end (4) and an outlet end (10), an internal hollow spike (2) and an intermediate sealing member (3) including an elastic head (35) with pre-slit (38) and an elastic hollow element (36) formed with sealing members (47, 48) in contact with the hollow spike (2) and with an elastic thrust means tending to maintain the elastic head (35) in a closure condition. An annular member (55) surrounds the elastic hollow element (36) and it axially slides into the tubular body (1) due to the movement of the elastic head (35) between the closure condition and the opening condition of the connector. Due to this solution idea, the valve connector according to the invention is provided with an improved degree of reliability, guaranteeing the airtight sealing in its activated condition even in case of generation of overpressures therein reaching up to values in the order of 300 psi and above in its activated condition.

The invention discloses a switchable built-in tracheal catheter and laryngeal mask combined breathing device. The device comprises a laryngeal mask, a tracheal catheter, and a sealing locking device arranged on the device; the front end of the tracheal catheter is inserted into a laryngeal mask catheter from the far end of the laryngeal mask catheter; the rear end of the tracheal catheter can be pushed to enable the tracheal catheter to freely slide into the laryngeal mask catheter. According to the device, the tracheal catheter and the laryngeal mask can be switched in different breathing modes; the built-in tracheal catheter breathing mode is used in patient operations such as operation for different body part, or fat patients, high blood pressure patients and diabetes patients so as to improve the reliability and safety of assistant breathing; the laryngeal mask breathing mode is switched when the patient wakes from general anesthesia, so that the probability of airway hypersensitive reaction such as bucking caused by the tracheal catheter breathing mode can be reduced; the complication caused by bucking in the waking period can be reduced by the mode of replacing drugs.

The invention discloses an ion mobility spectrometry employing an electrospray/corona discharge dual-mode ion source. Switching of two ionization modes is achieved; and the range of a detectable sample is expanded. An ion source is provided with a liquid-cooling component and a heating film component, which are used for rapidly setting the working temperature of a spray needle, so that different requirements of the two ionization modes on the temperature of the spray needle are met; the flow range of an injected sample is expanded; and the detection sensitivity is improved. A trumpet-shaped space is adopted by an electrospray/corona discharge region between the ion source and a drift tube, so that the atomization efficiency on the sample from low-temperature liquid to a gaseous state is improved; the desolvation effect of the sample is improved; and the sample residue is reduced. The drift tube is manufactured by a metal ceramic sealing technology, so that the connection strength is high; the insulativity and the air tightness are good; and installation together with other components is facilitated. The drift tube and a preheating gas circuit are arranged in a heating cylinder with uniform temperature as a whole, so that the phenomenon of migrating ion cluster diffusion caused by non-uniform temperature of blowback air in a migration area is reduced; and the detection resolution capability is improved.

The invention relates to autothermic packaging comprising a container (1) for a food product and a first compartment (5) containing a first substance which can react with a second substance that is contained in a second compartment (6) or which can change phases when exposed to conditions in said second compartment (6). Both of the aforementioned compartments (5, 6) abut one another by means of the mouth thereof and are separated by means of a sheet (7) which can be broken from the outside using penetration means (8). At least one heat-conducting wall (9) is shared by the container (1) and the first compartment (5). Moreover, said heat-conducting wall (9) comprises a band (10) which is disposed next to the mouth thereof and the container (1) comprises an external heat-insulating wall (11) which is connected to a base member (39) having a band (12) close to a peripheral edge. The aforementioned peripheral flanged bands (10, 12) abut one another, thereby forming a hermetic, resistant seam by means of crimping.

The invention relates to an air conditioner air duct system used for an intercity motor train unit. The air conditioner air duct system used for the intercity motor train unit comprises an air conditioning unit and a waste exhaust unit, wherein the air conditioner unit is arranged at the top of a vehicle, and the waste exhaust unit is arranged at the bottom of the vehicle. An air outlet and an air inlet which are formed in the inner side of an air conditioning unit chamber are respectively communicated with an air supply outlet and an air return inlet located in the vehicle through an air supply duct and an air return duct which are arranged at the top of the vehicle. The air supply outlet located in the vehicle at least comprises an air supply outlet in a passenger chamber carriage, an air supply outlet in a bathroom and an air supply outlet in a driver cab. The air return inlet located in the vehicle at least comprises an air return inlet in the passenger chamber carriage and an air return inlet in the driver cab. The waste exhaust unit is communicated with a waste exhaust air outlet located in the vehicle through a waste exhaust air duct. The waste exhaust air outlet in the vehicle at least comprises a waste exhaust air outlet in the passenger chamber carriage and a waste exhaust air outlet in the bathroom. The air conditioner air duct system for the intercity motor train unit facilitates the reduction of the weight of the air ducts, satisfies higher requirements for vehicle light weight and is beneficial for the equality of air flow distribution in the vehicle. Meanwhile, due to the fact that waste gas is exhausted from the waste exhaust unit at the bottom of the vehicle, the air-tightness requirements of the vehicle are further met.

A threaded joint for steel pipe, comprising a pin and a box allowed to be fitted to each other, wherein a porous zinc or zinc alloy layer as a lower layer by a projection plating method and a solid lubrication film (film containing lubricating powder in organic or inorganic binder) or a liquid lubricating film not containing heavy metal powder (example: liquid film formed mainly of high base organic metallic salt such as high base sulphonate) as an upper layer are provided on the thread part and the metal contact part without thread of at least either of the pin and box, whereby the threaded joint can provide excellent seizure resistance, corrosion resistance, and airtightness even after exposed to high temperature, and is allowed to be tightened and loosened repeatedly in a hot oil well without using compound grease containing heavy metal powder.

The invention discloses a novel heat-insulated energy-saving aluminum-alloy window, which comprises a window frame, a window sash, window glass and a pressing bar. The window frame and the window sash both have insulating broken-bridge structures, a frame insulating penetrating bar is arranged in the window frame, a sash insulating penetrating bar is arranged in the window sash, a frame and sash intermediate rubber strip and a frame-sash sealing rubber strip are arranged between the window frame and the window sash, an outer glass rubber strip is arranged between the outer side of the window glass and the window sash, an inner glass rubber strip is arranged between the inner side of the window glass and a pressing line, one side of the inner glass rubber strip clings to the pressing line, and a gap is formed between the other side of the inner glass rubber strip and the window glass. In terms of design of section bars, both the window frame and the window sash have the insulating broken-bridge structures, the insulating penetrating bars made of micro-foaming materials are adopted in the middle of the window frame and the window sash, so that the heat transmitting path through the window frame and the window sash is blocked, and high efficiency and energy saving are achieved. The way of rolling the bars prior to penetrating the bars are both employed in the window frame and the window sash, so that sealing and shearing force of the section bars of the window frame and the window sash are guaranteed, and strength of the section bars is higher.

Provided is an integrated ventilation type unit curtain wall. The problems that in the existing curtain wall ventilation, the irregular ventilation generates the waste of energy consumption, a ventilator is independently arranged on a unit plate block, and the outer decoration effect of a curtain wall is influenced are solved. The integrated ventilation type unit curtain wall comprises a unit plate block formed by glass plane materials and outer pinch plates assembled with a male vertical keel and a female vertical keel and a ventilator, and is characterized in that the ventilator is integrated in the wide-body female vertical keel cavity of the unit plate block, a rotating core body with a cross-flow fan and double guide vanes is arranged between two end plates of a ventilator shell body, the rotating core body is driven by a stepping motor, the blocking positions of the double guide vanes in the rotating core body are controlled, and the air input, air exhaust and closing of a ventilator air channel are achieved. The integrated ventilation type unit curtain wall is reasonable in design of the integrated type structure and convenient to mount, dismount and maintain, the water tightness and the air impermeability of the curtain wall unit plate block are guaranteed, meanwhile, the uniformity of the outer decoration effect is enhanced, the ventilation state is precisely controlled, the requirement for air quality in different periods is met, and the aim of saving energy is achieved.

The invention relates to a system and a method for automatically measuring the property of a vapor stream vacuum pump, which belong to the technical field of vacuum test. The invention can be in strict accordance with the test principle and the method specified in national and international standards to automatically complete the test of parameters of the vapor stream vacuum pump. The system comprises a test cover, a gas flow testing unit, a fore pipe gas flow adjusting unit, and the like, wherein the gas flow testing unit comprises a dropper, a dropper magnetic valve is arranged at a gas inlet of the upper part of the dropper, and the outer side of the dropper is provided with an upper liquid level switch and a lower liquid level switch; a test cover gas flow adjusting unit and the fore pipe gas flow adjusting unit both comprise stepping motors, needle type micrometering valves and high-vacuum magnetic valves, drive buttons of the needle type micrometering valves are connected with the stepping motors, and gas outlets of the needle type micrometering valves are connected with the high-vacuum magnetic valves; and the liquid level switches, the dropper magnetic valve, and the like are connected with a computer control unit. The measuring method comprises the following steps of measurement of limit pressure of the vapor stream vacuum pump, measurement of volume flow rate, and measurement of critical fore pressure.