Steel pipe water-filling pressure intensity test table

Abstract

The invention relates to a steel pipe water-filling pressure intensity test table, which belongs to the technical field of machinery processing and is applied to a steel pipe hydraulic water-pressure test machine. The steel pipe water-filling pressure intensity test table comprises two parallel elastic sliding rods, wherein two ends of each rod are provided with a frock locating plate and a three-pawl self-locating core sliding plate; the middle part of a movable rod is provided with a cylinder elastically-moving locating plate, an elastic pressure cylinder and a water-pressure increasing machine are arranged between the moving locating plate and the frock locating plate, and a three-pawl chuck moving plate is arranged between the moving locating plate and the three-pawl self-locating core sliding plate; a positive pressure spring is arranged along each rod between the moving locating plate and the three-pawl chuck moving plate, and a pressure-reducing steel pipe sealing device is connected with the water pressure increasing machine after passing through the moving locating plate and the water pressure increasing machine; a back pressure spring is arranged along each rod between the three-pawl chuck moving plate and the three-pawl self-locating core sliding plate; one end of a three-pawl self-locating core clamping device is fixed to the three-pawl self-locating core sliding plate; and the other end of the three-pawl self-locating core clamping device is in movable fit with the three-pawl chuck moving plate. The steel pipe water-filling pressure intensity test table provided by the invention is capable of clamping a steel pipe by automatic centering without destroying the shape of the steel pipe, and is good in sealing property, simple and safe to operate.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a water injection pressure strength test bench for a steel pipe hydraulic water pressure testing machine. Background technique [0002] Steel pipes for important purposes must pass relevant inspections before leaving the factory. Hydrostatic testing of steel pipes is a relatively reliable inspection method for finished product inspections. It can visually inspect whether there are penetrating defects in steel pipes. [0003] With the development of my country's economy, steel pipes are more and more used in industrial construction such as smelting and petrochemicals. In some large-scale equipment, steel pipes are used in large quantities, and the strength, pressure resistance and compactness of steel pipes are affected. There are higher requirements. As steel pipes are parts of these equipment, it is generally required to retest the performance of steel ...

AI Technical Summary

Problems solved by technology

[0004] At present, most traditional hydraulic machines use bolts to fix the steel pipes. The installation and disassembly process takes a long time, is time-consuming and laborious, and affects work efficiency. Advanced equipment is expensive.

In addition, in the traditional radial sealing test, because the head of the steel pipe is covered by the sealing device, the high pressure cannot be tested for a long section of the end of the steel pipe, so that there is a pressure test blind area at the head of the steel pipe, and the two ends generally need to be cut off by 100-120mm. In order to ensure the reliability of product quality, the economic loss caused by loss is huge

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