Adapter quality inspection apparatus

Abstract

The invention discloses an adapter quality inspection apparatus comprising a host base, an air pump, a plugging cylinder, a compaction cylinder, an axle tube, a stopper base, and a joint support frame. A positioning plate is disposed on a compacting piston rod. A driving frame is disposed on an end socket piston rod. The axle tube is provided with a plastic pipe external end sealing plate, a steel pipe external end sealing plate, a plastic pipe external sealing ring, a steel pipe external sealing ring, and a first air inlet. The first air inlet is provided with a first air intake non-return valve. The outer wall of the axle tube is provided with a first air pressure sensor. A steel-plastic adapter supported by the joint support frame is located between the stopper base and the plugging cylinder. The air feed end of the air pump communicates with the interior of the axle tube via an air feed pipe. The adapter quality inspection apparatus has beneficial effects of achieving reasonable overall structure, positioning and clamping the steel-plastic adapter in place, guaranteeing tightness while incapable of clamping the steel-plastic adapter into damage, and having an adaptively adjusted sealing structure to strengthen a sealing effect in high-air-pressure detection.

Description

technical field [0001] The invention belongs to the technical field of tightness testing of pipe fitting joints, and in particular relates to quality inspection equipment for conversion joints. Background technique [0002] Steel-plastic conversion joints, also known as PE steel-plastic conversion joints, have been widely used in current production and life. For example, steel-plastic conversion joints are widely used in gas and natural gas transportation pipelines (most of the external gas pipelines are PE Pipes are mostly steel pipes when entering the room, and steel-plastic conversion joints are required during the transfer process). The steel-plastic conversion joint itself consists of a steel pipe section (a section of steel pipe) and a plastic pipe section (usually a section of PE pipe). One end of the steel pipe section is docked with one end of the plastic pipe section to form a connection section. The connection section is usually clamped by one end of the steel pip...

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Problems solved by technology

[0004] The above-mentioned test method has the following disadvantages: 1. The operation process is complicated, and the weight of the frame is relatively heavy. It is necessary to immerse the frame in water with the help of external equipment, and the installation of the steel-plastic conversion joint is also relatively troublesome; When the steel-plastic conversion joint is sealed and the sealing ring is placed outside the two ends of the steel-plastic conversion joint, and the hydraulic cylinder (or air cylinder) is used to clamp the two ends of the steel-plastic conversion joint for sealing, the strength of both is difficult to control. If the pressing or clamping force is not enough, the seal at the end of the steel-plastic conversion joint may not be reliable, which will affect the accuracy of the test and cause misjudgment of quality. If the pressing or clamping force is excessive, it may cause The deformation of the steel-plastic conversion joint causes the end face (pipe end) of the steel-plastic conversion joint to be uneven, which makes it impossible to form a seal between the steel-plastic conversion joint and the pressure plate, resulting in misjudgment of quality. Excessive force may also directly damage the steel-plastic conversion joint

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