31results about How to "Convenient air tightness testing" patented technology

The invention discloses a portable valve leakage detection device, and belongs to the technical field of valve leakage detection. The device comprises clamping frames which are symmetrically arrangedon the upper side and the lower side. The side walls of the clamping frames on the two sides are connected through struts, and clamping grooves are formed in the phase view side walls of the clampingframes on the two sides. Through grooves are longitudinally formed in the middle of the clamping frames, sliding rods are inserted in the through grooves, so that the operation is convenient, and thetwo side interfaces of the valve can be sealed through the function of locking the two ends; supporting rods are matched with positioning frames in a locked mode, so that the operation is relatively quick, and the efficiency is high; through cooperation of one-way valves, air inlet nozzles and air pressure detection meters, it is convenient to supply air and observe changes in internal air pressure, and carry out the air tightness detection.

The invention relates to the field of valve switches. A lower switch valve device for precision three-way valve air tightness detection includes an up and down movement mechanism, a clamping mechanism and a valve switch mechanism; the clamping mechanism includes a mounting box, a rotating shaft, a chuck, a coupling and a clamping mechanism Cylinder; the rotating shaft is vertically arranged inside the installation box, and the outer casing of the rotating shaft is covered with a tapered outer casing, and the upper part of the outer casing has a clamping groove for the collet; the upper part of the rotating shaft is slidably installed with a collet, and The chuck is located in the housing, and the shape of the top of the chuck corresponds to the clamping groove; the lower part of the rotating shaft is connected to the coupling; the lower part of the coupling is equipped with a clamping cylinder, and the valve switch mechanism is installed on the upper part of the clamping mechanism. The switch mechanism is used to rotate the clamping mechanism to open or close the valve. The technical effect of the present invention is that the clamping cylinder pulls down the rotating shaft to move the chuck down, tightens the upper part of the chuck through the clamping groove to clamp the three-way valve, and facilitates the opening and closing of the subsequent valve.

The invention provides a power battery module airtight detection device, which includes a gas injection module, a transfer module, a first-level airtight detection module and a second-level airtight detection module. The air injection module injects compressed air with a first temperature into the power battery module. The first-level airtight detection module obtains the infrared image of the surrounding area of ​​the power battery module, and determines whether the power battery module meets the first-level airtightness requirements based on the infrared image. The second-level airtight detection module detects the power battery module that meets the first-level airtightness requirements to determine whether it meets the second-level airtightness requirements, wherein the first-level airtightness requirements are lower than the second-level airtightness requirements. confidentiality requirements.

The invention discloses a defect detecting device for a fuel gas pipe wall. The defect detecting device for the fuel gas pipe wall comprises a bottom base. The bottom base is provided with at least two support bases. Two sides of the bottom base in a length direction are provided with vertical plates. The lower ends of the vertical plates are fixedly provided with a moving mechanism which can drive the vertical plates to be moved along a horizontal direction. The opposite surfaces of the vertical plates are provided with oppositely inwards protruded rubber pads. The middle of the vertical plates is provided with a perforation. A first air inlet pipe is fixedly installed in the perforation. The outer end of the first air inlet pipe is connected with a first fan. The inner end of the first air inlet pipe is provided with an air outlet and a valve installed at the air outlet. The defect detecting device for the fuel gas pipe wall further comprises a detecting vehicle. The detecting vehicle is provided with a separating mechanism used for dividing a cavity of a fuel gas pipe to a first cavity and a second cavity. Two sides of the separating mechanism are provided with pressure sensors.The defect detecting device for the fuel gas pipe wall is capable of performing the air impermeability detection on the fuel gas pipe wall better, and looking up a defect position, and has the advantages of convenient use, high efficiency and high reliability.