60results about How to "Realize air tightness detection" patented technology

The invention discloses a testing tool and a testing method for the sealing performance of a water-stop capsule used in the construction of a platform. Water-stop capsule sealing performance testing tool for platform construction, including inner steel sleeve, outer steel sleeve, adjusting bolt, extendable air pipe, pressure gauge at the inlet end, extendable water pipe, pressure gauge at the water inlet end; inner steel sleeve There is a gap between the inner steel sleeve and the outer steel sleeve; the inner steel sleeve and the outer steel sleeve are connected by adjusting bolts; the extendable air pipe and the extendable water pipe are connected to the outer steel sleeve. The detection method includes: installing the water-stop capsule; testing the airtightness of the device; testing the air-tightness and sealing performance of the water-stop capsule; and detecting eccentricity. The invention can not only detect the sealing performance of the large-diameter water-stop capsule, but also can monitor the internal air pressure of the water-stop capsule in real time through the air inlet device connected to the outside of the water-stop capsule and the water inlet device connected to the outer steel sleeve. Judgment and detection can be used as the judgment basis and empirical results of the sealing effect of the water-stop capsule.

The invention relates to an air tightness detector for a photoelectric instrument. The air tightness detector comprises a nitrogen on-line quality analysis module, a first air inflation channel, a second air inflation channel and a single-chip microcomputer control circuit, wherein the nitrogen on-line quality analysis module is formed by connecting a dew-point meter, a nitrogen purity analysis meter and a digital type pressure meter; the first air inflation channel is formed by connecting a first precise pressure reducing valve, a first magnetic valve and a first digital type pressure switch; the second air inflation channel is formed by connecting a second precise pressure reducing valve, a second magnetic valve and a second digital type pressure switch; the single-chip microcomputer control circuit is connected with each component, and the air quality of an input air source and the air inflation time, air inflation pressure and other indexes of the air inflation of the photoelectric instrument are monitored in real time. The air tightness detector for the photoelectric instrument disclosed by the invention is suitable for the air tightness detection of inner cavities of various precise photoelectric instruments, and can be widely used for the air tightness detection of newly developed or repaired photoelectric instruments in a photoelectric instrument development organization or repair factory.

The ship accessory machining platform comprises a machining table, a base, an extending table, a sliding groove, a sliding seat, a first air cylinder and a controller, the sliding seat comprises a supporting seat and a rotating shaft, a first motor is arranged on one side edge of the supporting seat, and the upper portion of the rotating shaft is connected with the bottom of the machining table through a connecting seat; a sliding block is arranged on the other side of the support and slidably connected with the sliding seat, a piston rod of the first air cylinder extends into the sliding seat and then is fixedly connected with the sliding block, one or more ventilation pipes and an air connecting head are arranged in the machining table, a plurality of first ventilation holes are formed in the ventilation pipes, and all the ventilation pipes are connected with a ventilation main pipe. An air inlet pipe, an air outlet pipe and a detection air pipe are arranged on the side edge of the machining table, a circle of sealing groove and an installation base are further arranged on the table top of the machining table, a second air cylinder is fixed to the installation base, an air tightness detection cover is connected to the second air cylinder, and a sealing rubber strip is arranged below the air tightness detection cover. The angle of the machining table can be adjusted.

The invention provides an oil-filled motor, belonging to the technical field of motor equipment. The oil-filled motor solves the problems that a hole needs to be formed in an upper cap and the operation is tedious when the existing oil-filled motor is subjected to airtightness detection. The oil-filled motor comprises a motor cylinder, an upper bearing pedestal and an upper cap, wherein the upper bearing pedestal is fixed connected to the end part of the motor cylinder, the upper cap is fixed connected on the upper bearing pedestal, a detection hole is formed on the upper bearing pedestal, an outgoing wire sheath is fixedly inserted in the detection hole, a wire passing hole is formed in the outgoing wire sheath along the axial direction, one end of the outgoing wire sheath extends into an oil cavity, a limiting part is arranged on the outer circumferential wall of the end extending into the oil cavity, and the end, extending into the oil cavity, of the outgoing wire sheath is further provided with a leading-in structure which can guide a gas in the oil cavity to extrude the outgoing wire sheath and passes through a space between the outer circumferential wall of the outgoing wire sheath and the hole wall of the detection hole. When the oil-filled motor provided by the invention is subjected to airtightness detection, the hole does not need be formed in the upper cap, and the airtightness of the gas cavity and the oil cavity can be detected simulatenously in a single test.

The invention discloses a crustless heat exchanger pipe end air-tightness test device and method, and relates to the field of the heat exchanger manufacturing. Pipe sheets integrated with the pipe bundle are arranged at two ends of the crustless heat exchanger pipe end air-tightness test device; the crustless heat exchanger pipe end air-tightness test device comprises pressing plates and a pressing device; the pressing plate is clung to the upper surface of each pipe sheet by the pressing device; a sealing ring is arranged between the pressing plate and the pipe sheet, and a closed cavity is formed by the pressing plate, a heat exchange pipe and the pipe sheets. The air-tightness test method comprises the following steps: one, preparation before test, and two, air-tightness test. The device disclosed by the invention is convenient for operation, and the method is accurate in leak detection.

The invention discloses an air-tightness detector. The detector comprises a cylinder, a base plate for sealing a catalytic cleaner is arranged at one end of a piston rod of the cylinder, a gas transmission structure for transmitting gas provided by an aerator into the catalytic cleaner is arranged on the base plate, and the detector further comprises a pressure gauge for detecting the pressure change inside the catalytic cleaner after aeration. The air-tightness detector is small in size, simple in operation, convenient to move and capable of detecting the air-tightness of various automobile exhaust catalytic cleaners.

The invention discloses a detection device based on pre-drying of heating instruments, which comprises a base, a conveying mechanism and a detection bench. A drying component is arranged on the conveying mechanism. The drying component includes an outer frame, an inner frame and a spray chamber formed by the two frames. The conveying belt of the conveying mechanism is located in the inner frame, and the inner frame is fixed to the outer frame by installation support legs. An air blower is arranged on the outer frame. The outer frame is provided with an air vent. A nozzle is arranged on the upper bottom plate of the inner frame, and liquid outlets are formed in the lower bottom plate. The objective of the invention is to provide a detection device based on pre-drying of heating instrumentsin view of the problem above. After the boiling water temperature of an electric kettle is detected, the electric kettle is dried through the drying component, a turning frame is turned up and down bya servo motor, a clamping plate in the detection bench clamps the electric kettle and turns the electric kettle upwards, and the device and a coupler complete on-off detection together. Therefore, the detection efficiency of electric kettles is greatly improved.

The invention discloses a leakproof device of a connecting part. The leakproof device comprises the connecting part and further comprises a leakproof shell arranged on the periphery of the connecting part in a seal manner, a closed cavity is arranged between the leakproof shell and the connecting part, and the leakproof shell at least comprises a soft shell portion; when the connecting part leaks, the soft shell portion shows visually-checked shape changes. According to the leakproof device of the connecting part, a pipeline for conveying gas can be effectively prevented from leaking towards the exterior, production process safety is improved, and production and running stability is ensured. In addition, through observing of the appearance shape of the leakproof device of the connecting part, whether medium leakage happens to the device or not can be rapidly, conveniently and rapidly judged, a certain specific gas leakage point can be determined, and the judgment process saves time and labor. In addition, the leakproof device of the connection part is simple in structure and suitable for modification of various gas conveying pipelines in a production line.

The invention relates to an air tightness detector for a photoelectric instrument. The air tightness detector comprises a nitrogen on-line quality analysis module, a first air inflation channel, a second air inflation channel and a single-chip microcomputer control circuit, wherein the nitrogen on-line quality analysis module is formed by connecting a dew-point meter, a nitrogen purity analysis meter and a digital type pressure meter; the first air inflation channel is formed by connecting a first precise pressure reducing valve, a first magnetic valve and a first digital type pressure switch; the second air inflation channel is formed by connecting a second precise pressure reducing valve, a second magnetic valve and a second digital type pressure switch; the single-chip microcomputer control circuit is connected with each component, and the air quality of an input air source and the air inflation time, air inflation pressure and other indexes of the air inflation of the photoelectric instrument are monitored in real time. The air tightness detector for the photoelectric instrument disclosed by the invention is suitable for the air tightness detection of inner cavities of various precise photoelectric instruments, and can be widely used for the air tightness detection of newly developed or repaired photoelectric instruments in a photoelectric instrument development organization or repair factory.

The invention provides an oil-filled motor, belonging to the technical field of motor equipment. The oil-filled motor solves the problems that a hole needs to be formed in an upper cap and the operation is tedious when the existing oil-filled motor is subjected to airtightness detection. The oil-filled motor comprises a motor cylinder, an upper bearing pedestal and an upper cap, wherein the upper bearing pedestal is fixed connected to the end part of the motor cylinder, the upper cap is fixed connected on the upper bearing pedestal, a detection hole is formed on the upper bearing pedestal, an outgoing wire sheath is fixedly inserted in the detection hole, a wire passing hole is formed in the outgoing wire sheath along the axial direction, one end of the outgoing wire sheath extends into an oil cavity, a limiting part is arranged on the outer circumferential wall of the end extending into the oil cavity, and the end, extending into the oil cavity, of the outgoing wire sheath is further provided with a leading-in structure which can guide a gas in the oil cavity to extrude the outgoing wire sheath and passes through a space between the outer circumferential wall of the outgoing wire sheath and the hole wall of the detection hole. When the oil-filled motor provided by the invention is subjected to airtightness detection, the hole does not need be formed in the upper cap, and the airtightness of the gas cavity and the oil cavity can be detected simulatenously in a single test.

The invention discloses an air tightness detection device for a quartz crystal resonator. The air tightness detection device comprises a mounting table, an air outlet cylinder, an air outlet cylinderbracket, a striker fixing plate, a reset spring, a pushing mechanism, a feeding mechanism and a detection mechanism. The mounting table is mainly used for bearing all structures of the detection device, the pushing structure pushes the air blowing cavity inserted into the air pipe of the air blower forwards, the feeding mechanism rotates the to-be-detected quartz crystal resonator placed in the clamp to the same horizontal height as the air blowing cavity, at the moment, the air blowing cavity, the clamp and the air outlet cylinder are tightly connected, and the air blower blows air through the air blowing cavity. And if the air tightness is poor, the air enters the air outlet barrel, so that the display lamp in the detection mechanism is lightened, and if the air tightness is good, the air cannot enter the air outlet barrel, and the display lamp cannot be lightened.