125results about How to "Under pressure" patented technology

The invention discloses a pneumatic supporting structure. The structure is formed by a supporting air cylinder, an air cylinder shaft of the supporting air cylinder is arranged in a left and right horizontal manner, the air cylinder shaft and the supporting air cylinder are connected to folding type telescopic frames on the left side and the right side of the base correspondingly, a horizontal supporting plate which is horizontally arranged is arranged between the top ends of the folding type telescopic frames, and the two sides of the horizontal supporting plate are fixedly connected with thetop ends of the corresponding folding type telescopic frames through bolts. The supporting air cylinder is used for supporting and fixing the erected folded type telescopic frames, the folding type telescopic frames are arranged on the left side and the right side of the base, the bearing pressure can be increased, the two ends of the base are stressed evenly, and the service life can be prolonged.

The invention relates to a pipeline pressure test method and a device. The pipeline pressure test method comprises the steps of: arranging a sealing rubber ring the outer circle of which is provided with an annular groove at the welding location of a pipeline joint, using a tensioner ring jointed by sub-tensioner rings provided with embedded sub-ports to internally support the sealing rubber ring, using the variable diameter wedge to insert the jointed openings of the sub-tensioner rings and using bolts for locating; then using a double-direction impact hammer to beat the variable diameter wedge to tightly wedge and internally support the sealing rubber ring to lead the annular groove between the welding location of the pipeline joint and the middle of the outer surface of the sealing rubber ring to form a forced sealed space, opening an exhaust valve, achieving the specified pressure value by filling water and pressurizing, and then closing aninlet valve, thus being capable of inspecting the bearing pressure capability of the pipeline joint. The pressure test device mainly comprises a water injection pump, a pressure gauge, the sealing rubber ring, the tensioner ring and the variable diameter wedge; the outer circle of the sealing rubber ring is provided with the annular groove; the bottom end of the annular groove is provided with anexhaust pipe and the exhaust valve, which are communicated with the annular groove; and the tensioner ring is jointed by 3 to 6 sub-tensioner rings provided with embedded sub-ports.

The invention provides a leveling device. The leveling device comprises a supporting part, at least two adjustable supporting parts, at least two horizontal sensing parts, a feedback module and at least two locking structures. The supporting part is provided with a first end suitable for being fixedly connected with a foundation and a second end rotatably connected with a plane to be adjusted; each adjustable supporting part is provided with a first connecting end suitable for being fixedly connected with the foundation and a second connecting end rotatably connected with the plane to be adjusted, and at least two second connecting ends are not collinear with the connecting points of the second end and the plane to be adjusted; the at least two horizontal sensing parts are used for continuously measuring the inclination angle of the plane to be adjusted; the feedback module receives the inclination angle numerical values, and when the inclination angle numerical values are equal to set angles, control signals are sent out; the at least two locking structures are electrically connected with the feedback module, after the control signals are received, the adjustable supporting parts are locked, and the adjustable supporting parts become rigid supporting parts. According to the leveling device, after the adjustable supporting parts are pressed, the adjustable supporting parts can be automatically bounced to be opened, other drive structures do not need to be used, and the device is simple in structure, low in cost and high in adjusting efficiency.