SU589549A1 - Hydraulic press for leakage testing of pipes - Google Patents

Description

(54) HYDRAULIC PRESS FOR TESTING TUBES FOR TIGHTNESS

one

The invention relates to equipment for testing hollow articles, i.e. elements and connections for tightness in mechanical engineering, mainly for testing casing pipes with couplings installed at their ends.

A hydraulic press is known for inspecting the pipes for tightness, comprising stationary and movable sealing heads coaxially mounted on the frame, guides for installing the pipe and supporting it

P.

By moving the movable head towards the stationary one along their common axis, it is first achieved to grip one end of the pipe, and then grab the stationary head to the second end of the pipe.

The disadvantage of such a press is the absence of a device for extracting a pipe from a sealing head, for example, when seized in one of them.

Closest to the invention, technical repgenium is a hydraulic press for pipe testing for tightness, comprising a base with pipe supports, a fixed and axially movable sealing heads, and a device for extracting Pipes from sealing heads. The base of this press is made in the form of stationary crossbars, columns that tighten these crossbars, a movable crossbar moving along columns, hydraulic cylinders mounted on a fixed crossbar and providing movement of the movable crossbar, and supports for the test pipe, and a device for extracting the pipe from sealing heads - in the form of levers moved by a hydraulic actuator 2.

After testing the pipe, the movable cross member with the sealing head returns to its original position, while the pipe is held by levers that are attached to its outer surface.

The disadvantage of such a press is the possibility of the levers slipping through the pipe with couplings, which affects the press performance, since additional time is required to remove the pipe from the heads.

The purpose of the invention is to increase the productivity of the press when testing pipes with couplings.

Claims (2)

This goal is achieved due to the fact that, in the proposed hydraulic press, a device for extracting a pipe is made as mounted on a stationary sealing head of a hydraulic cylinder mounted along the axis of a press placed on its ejector washer, a bracket with a ball: The center of gravity of which is located below the axis of the hinge, and the one-sided limiter of the stir plate mounted on the bracket. The drawing shows the proposed hydraulic press for testing pipes for tightness, cut. The press contains a base, made in the form of fixed crossbars 1, 2, columns 3, which cross these crossbars and movable cross member 4, mixed, along columns, sealing heads 5, 6 with seals 7, 8, one of which is mounted on a fixed frame. crossbar 2 and the other on movable crossbar 4, hydraulic cylinders 9 mounted on a fixed crossbar 1 and providing movement of the movable crossbar 4, supports (not shown), 1 supporting the tube relative to the press axis during the tests, and pipes from sealing heads. The latter is made in the form of a hydraulic cylinder 0 installed along the axis of the press in the housing of a stationary sealing head 6 mounted on the piston rod 11 of the hydraulic cylinder 10 ejecting the washer 12 interacting with the end of the test tube 13 when removing the last of the sealing heads, the bar 14 pivotally mounted the axis 15 of the bracket 16 fixed to the sealing head 6 and the one-sided limiter 17 mounted on the bracket 16 and the movement restricting bar 14, the center of gravity of which is located below the axis 15 d providing a constant vertical position of the slats. The press works as follows. The test pipe 13 with couplings 18, 19 is installed at the ends along the axis of the press and is sealed with sealing crosshead 4 by sealing heads 5, 6. At this, the bar 14 rotates on the axis 15 of the bracket 16 and passes the pipe 3 with coupling 19 to the sealing head 6. After testing, the movable cross member 4 with the sealing head 5 returns to its original position. In this case, the hydraulic cylinder 10 with the help of the ejector washer 12 out 5 9 leads the pipe 13 with the coupling 19 from the sealing head 6 to the supports supporting the pipe relative to the axis of the press. In the event that the second end of the pipe with sleeve 18 remains in the sealing head 5, the end of the pipe with sleeve 19 extends to the strip 14, the movement of which is limited by the stop 17, and is wedged with this strip, whereby the end of the pipe with sleeve 18 is removed from the sealing head 5 After removal of the sealing head 5, the tested pipe is removed, a new pipe is fed, and the operations described above are repeated. The presence in the hydraulic press of the device of the described construction for removing the pipe from the sealing heads ensures the guaranteed removal of the pipe from the latter, improves the press performance by saving the time required to remove the pipe from the heads and, in addition, eliminates the possibility of damage to the outer surface of the pipe. Claims An airtight press for testing pipes for tightness, comprising a base with pipe supports, fixed and axially movable axes of the press, and a device for removing the pipe from the sealing heads, characterized in that, in order to improve press performance when testing pipes with couplings, the device for pipe extraction is made in the form of mounted on a fixed sealing head of a hydraulic cylinder mounted on the axis of a press placed on its push rod yby, a bracket with a bar hinged on it, the center of gravity of which is located below the axis of the hinge, and a one-sided stop of the movement of the bar fixed on the bracket. Sources of information taken into account in the examination: 1. US patent number 3321958, cl. 73-495, 1967. 2.Press model P-9041M, ZTS. Drawing П-9041М 202.001 СП. g.