Oval Head Inspection Instrument for Pressure Vessels Based on Oval Gauge

Abstract

The invention relates to a pressure vessel elliptical head inspection instrument based on an ellipse gauge, which belongs to the field of pressure vessel inspection equipment. It mainly includes an elliptical gauge slide rail with a chute. The two ends of the ellipse gauge slide rail are provided with matching fixing cards and fastening bolts. The center vertical slider and the eccentric horizontal slider are installed on the ellipse gauge slide rail. There is a slide bar; the eccentric end of the slide bar is a push rod with a high-precision displacement sensor, and a high-precision displacement sensor roller is arranged at the end of the push rod; the high-precision displacement sensor is connected to the handheld terminal through a data cable. The beneficial effects of the present invention are: to realize the improvement of the inspection accuracy and inspection efficiency of the elliptical head, and effectively ensure the quality of the elliptical head of the pressure vessel, saving the link of making and maintaining the template; The head inspection industry has always lacked automated inspection equipment.

Description

technical field [0001] The invention relates to an inspection instrument that can be applied to inspect whether the ellipticity of the inner surface of the pressure vessel elliptical head conforms to the inspection standard, in particular to an ellipse gauge-based inspection instrument for the pressure vessel elliptical head, which belongs to the pressure vessel inspection equipment field. Background technique [0002] At present, in the latest GB / T 25198-2010 "Pressure Vessel Heads", regarding the "manufacturing, inspection and pre-acceptance" of elliptical heads, the method of sample comparison has been used to judge whether the inner surface of elliptical heads is Conforms to the curvature of a standard ellipse. The standard stipulates that: the convex head formed by the whole board and formed after the panel is assembled, after forming, it is indented to a certain size according to the standard section shape line of the head (depending on the size of the head, it is app...

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Problems solved by technology

[0003] Although the sample comparison is simple and easy to use, the tolerance calculation is not only a heavy workload and very cumbersome for the inspectors, but also manual collection is prone to errors; at the same time, it is also necessary to consider that oval heads of different specifications need to be equipped with a set of matching specifications The model, which increases the cost of the enterprise for the preservation and maintenance of the model; in addition, with the continuous extension of the use of the model, the problem of wear and tear of the elliptical head model

As long as there is a little negligence in the above problems, it will lead to the dangerous use of the oval head, and even cause immeasurable losses to the users of the formed pressure vessels.

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