30results about How to "Good vacuum tightness" patented technology

The invention relates to a domical microwave plasma chemical vapor deposition diamond film device which is suitable for quick preparation of a high-quality diamond film in the presence of high-power microwave input. A resonant cavity main body is composed of a domical reflecting body, a metal sheet reflecting body, a quartz ring window, a cylindrical reflecting body and a deposition platform, wherein the metal sheet reflecting body can block spreading of microwave to the top of the resonant cavity, so that more microwave can be accumulated above a substrate; the deposition platform is divided into a central deposition platform and a marginal deposition platform, and the independent vertical moving functions of the central deposition platform and the marginal deposition platform are beneficial to realize quick optimization of a plasma state; and the quartz ring window is hidden in a slit formed by the wall of the resonant cavity, thus avoiding etching of plasma and being beneficial to improve the vacuum performance of the resonant cavity. Besides, the favorable design of a water cooling system ensures the high-power operating safety of the equipment. So many advantages are combined, so that the domical microwave plasma chemical vapor deposition device has a capability of depositing a high-quality diamond film at high speed under a high power level.

The invention discloses a helium mass spectrometer leak detection device for a pipe-to-pipe butt welding line. The device comprises a box body (1), a box body joint (5) and a helium mass spectrometer,wherein a through hole (101) is formed in the box body (1), the box body joint (5) is arranged on the box body (1) and is connected with the helium mass spectrometer, and the through hole is formed on the box body joint (5) so that the helium mass spectrometer communicates with the inner space of the box body (1). The helium mass spectrometer leak detection device for the pipe-to-pipe butt welding line has the advantages of being free from damaging pipes and welding lines, high in leak detection efficiency, low in cost, easy in manufacturing, high in reliability, and capable of determining leak point positions and the like.

The invention belongs to the technical field of packaging equipment, and particularly relates to a vacuum sealing machine. The vacuum sealing machine comprises a shell and a sealing cover connected tothe shell and capable of turning over relative to the shell, wherein a processing space allowing a packaging bag to stretch in is defined between the shell and the sealing cover, an exhaust assemblyis arranged in the shell, and an exhaust pipe capable of extending out of the shell and entering the processing space is arranged in the exhaust assembly; and a heating strip is arranged on the position, in the processing space, of the shell, a lower sealing strip is arranged on the position, in the processing space, of the shell, the lower sealing strip is located at the front end of the heatingstrip, the exhaust pipe passes through the upper end of the lower sealing strip when extending out of the shell, and an upper sealing strip aligned with the lower sealing strip is arranged on the position, in the processing space, of the lower end of the sealing cover. The vacuum sealing machine can carry out vacuum sealing treatment on any packaging bag.

The invention discloses a camera image conversion system of a vacuum packaged image sensor chip. According to the technical scheme, the camera image conversion system of the vacuum package image sensor chip comprises a housing, an image conversion module, a power module for supplying power to the image conversion module and a data processing module for processing signals of the image conversion module, wherein the image conversion module, the power module and the data processing module are arranged in the housing; a sealed cavity is formed in the housing, and a vacuum degree monitoring moduleis disposed in the sealed cavity; a terminal control module is disposed on the outer side of the sealed cavity and connected to the vacuum degree monitoring module. The vacuum degree in the sealed cavity can be monitored in real time, vacuum degree signals can be sent in real time, and changes of the vacuum degree in the sealed cavity can be known more accurately and timely.

The present invention discloses a tube helium mass spectrometer leak detection apparatus. The tube helium mass spectrometer leak detection apparatus comprises s a vacuum joint (1), a mandrel (2), a pressing member (3), a gasket (5), a support member (6), and a helium mass spectrometer. The mandrel (2) is a hollow tubular structure; the vacuum joint (1) is arranged at the top of the mandrel (2); the pressing member (3), the gasket (5) and the support member(6) sleeve on the mandrel (2); the support member (6) is detachably fixed on the mandrel (2); and the pressing member (3) can move axially along the mandrel (2), so that the gasket ( 5) can expand radially along the mandrel (2) under the action of the pressing member (3) and the support member (6). The tube helium mass spectrometer leak detection apparatus provided by the present invention has multiple advantages such as easy manufacture, a simple operation, high reliability, high leak detection efficiency, a low cost, reusability, and the like.

The invention relates to a vacuum sealing joint for a low-temperature tubular heating tube. The vacuum sealing joint comprises a tubular spiral heating tube, a vacuum joint, a sealing ring and compression nuts, wherein the vacuum joint is fixedly connected into an installation hole of a vacuum furnace wall; conducting ends of the tubular spiral heating tube are inserted in the vacuum joint; the vacuum joint is provided with inner conical holes, and in fit connection with outer conical tables on the tubular spiral heating tube through the inner conical holes; the sealing ring is arranged between the inner conical holes and the outer conical tables; and the tubular spiral heating tube is locked and fixed, and the sealing ring is compressed on the conducting ends of the tubular spiral heating tube through the compression nuts, so as to achieve a vacuum sealing effect. The joint enables a heating component of a vacuum furnace to be directly supplied with power of 220 V instead of being supplied with power by configuring voltage dropping equipment, thus configuration of a small vacuum furnace is simplified, and the equipment cost is reduced. Moreover, a reliable sealing structure is provided for producing the small vacuum heating furnace by virtue of the heating component for vacuum heating, and a technical support is provided for producing the small vacuum heating furnace by widely using the tubular heating tube.

The invention discloses a double-purpose vacuum sealing machine. The machine comprises a bottom cover, a face cover and an air pump, an upper vacuum cavity is formed in the lower portion of the face cover, and a lower vacuum cavity is formed in the upper portion of the bottom cover; the upper vacuum cavity and the lower vacuum cavity form a vacuum cavity for extracting air, and the vacuum cavity is communicated with the air pump through an air pipe. The machine further comprises an external air extraction device which is communicated with the vacuum cavity, and the other end of the external air extraction device is provided with an external connection device which is cooperatively connected with the external air extraction device to be used for being connected with a vacuumizing container.The double-purpose vacuum sealing machine can be used for vacuumizing an internal vacuum cavity and can also vacuumize the outside through the external device, the vacuum sealing performance is good,and the machine is safe to use and convenient to open and close.

The invention relates to a vacuum gate valve with a neutron shielding function. The vacuum gate valve comprises a driving mechanism, a valve shell and a valve plate, and is characterized in that the valve plate comprises an outer valve plate made of 0Cr18Ni9 stainless steel, a shielding plate made of lead boron polyethylene and an inner valve plate made of 0Cr18Ni9 stainless steel; an annular sealing groove is formed in the side, close to the valve shell, of the outer valve plate, and an ethylene propylene diene monomer vacuum sealing ring is embedded into the annular sealing groove and used for achieving vacuum sealing between the outer valve plate and the valve shell. According to the vacuum gate valve with the neutron shielding function, the problem that an existing conventional vacuumgate valve cannot shield neutron radiation is solved, the vacuum gate valve can be applied to the environment with neutron radiation, and the two functional requirements of vacuum sealing and neutronradiation shielding are met. The vacuum gate valve with the neutron shielding function has the advantages of being large in conductance, good in vacuum sealing performance, convenient to arrange a vacuum system, high in reliability and the like.

The invention discloses a pulse xenon lamp and a sealing method of the same. The pulse xenon lamp and the sealing method of the same are characterized in that two ends in a quartz tube in a xenon lamp are respectively provided with an electrode I and an electrode II along a transverse central axis; the electrode I and the electrode II are bilaterally symmetrical with a longitudinal central axis of the quartz tube; the tail of the electrode I at the right end of the longitudinal central axis of the quartz tube is fixedly connected with an electrode cap, a patchplug and a cable wire along the transverse central axis successively; the structure of the left end of the longitudinal central axis of the quartz tube is the same as the structure of the right end of the longitudinal central axis of the quartz tube; the electrode cap sleeves the outside of the port of the quartz tube, and active solders are filled between the electrode cap and the port of the quartz tube, and are heated to more than 600DEG C in a vacuum environment being less than 5*10-3Pa; and when the active solders are fused and are fully reacted with quartz glass, direct non-coupling sealing of the electrode cap and the quartz tube is completed. The sealing method of the pulse xenon lamp is easy to realize automation and large scale production of xenon lamp sealing, is simple and stable in the sealing process, is high in the vacuum sealing performance of the sealing area, and is high in structural intensity. The xenon lamp can bear large current, and the service life and working reliability of the xenon lamp are significantly improved.

The invention discloses lead-free solder for sealing quartz glass. A matrix of the lead-free solder is tin, and the atomic percent of introduced Ti and O is a follows: 0.2-6% of Ti and 0.05-5.9% of O.The atom ratio of Ti and O is greater than 1, and the mass percent of impurities in the lead-free solder is smaller than or equal to 0.1%. The welding temperature range of the lead-free solder is 600-800 DEG C, and the welding vacuum degree is smaller than or equal to 5*10<-3>Pa. In a quartz glass sealing process, scaling powder is not needed for the lead-free solder for sealing quartz glass, sothat the quartz glass sealing process is simplified and the vacuum sealing reliability of quartz glass sealing is improved. The lead-free solder can be widely applied to quartz glass sealing and can be also applied to welding quartz glass, glass, the softening temperature of which is not lower than 800 DEG C, taking SiO2 as a primary component, a titanium material, metals with titanium plating onthe surface and the like. The lead-free solder is in particular suitable for preparing a pulse xenon lamp, so that the service life of the pulse xenon lamp can be prolonged obviously and the working reliability of the pulse xenon lamp can be improved obviously.

The invention discloses Sn-Ti-Cu ternary alloy welding flux used for sealing of quartz glass. The matrix of the Sn-Ti-Cu ternary alloy welding flux is tin; the weight percentage of introduced Ti and Cu are 0.1%-2.0% of Ti and 0.1%-1.0% of Cu; the atomic percentage of introduced O is 0.05%-4.9%; and the mass percentage of impurities in the ternary alloy welding flux is smaller than or equal to 0.1%. the welding temperature range of the ternary alloy welding flux is 650 DEG C to 800 DEG C; and the welding vacuum degree is smaller than or equal to 5 multiplied by 10<-3> Pa. The ternary alloy welding flux has the advantages that no scaling powder is needed during the quartz glass sealing process; the quartz glass sealing technique is simplified; the vacuum sealing reliability of quartz glass sealing is improved; the ternary alloy welding flux can be widely applied to quartz glass sealing, and can also be applied to mutual welding of quartz glass, glass which has softening temperature above800 DEG C and takes SiO2 as the main component, a titanium material, oxygen-free copper, metal of which the surface is provided with a titanium cladding layer and the like; the ternary alloy weldingflux is especially applicable to manufacturing pulse xenon lamps; the service lives of the pulse xenon lamps can be prolonged; and the reliability of the pulse xenon lamps is obviously improved.

The invention discloses a device and a method for measuring a specific heat capacity through a double-flow method. The device comprises a calorimeter component and a heating control component. The calorimeter component comprises a vacuum cavity, a lower flange and an upper flange end cover matched with the lower flange are arranged at the top of the vacuum cavity, and a vacuumizing pipeline is arranged on the upper flange end cover; a second U-shaped pipe and a first U-shaped pipe which are the same in structure are arranged in the vacuum cavity, the upper ends of the second U-shaped pipe and the first U-shaped pipe are both connected with the lower end of a two-way pipe, heating wires are wound on the outer sides of the second U-shaped pipe and the first U-shaped pipe, and through holes of a first temperature sensor and a second temperature sensor are formed in the two ends of the heating wires respectively; and the heating control component is positioned outside the calorimeter and is connected with the heating wire. The device can accurately measure the specific heat capacity of a liquid, is good in stability and wide in measurable temperature and pressure range, can be used for specific heat measurement of dilute electrolyte solutions and organic matters in industry and scientific research, and can also be used for teaching of course experiments of energy and power related professions.