CN105588497A

CN105588497A - Method and device of measuring parallelism of flanges at two ends of cylindrical shell

Info

Publication number: CN105588497A
Application number: CN201511002203.5A
Authority: CN
Inventors: 李伟; 葛惠卿; 李明; 康抗; 齐杭宾; 冯宝纯
Original assignee: BAODING TIANWEI ELECTRICAL EQUIPMENT STRUCTURE CO LTD
Current assignee: Baoding Tianwei Baobian Electric Co Ltd
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2016-05-18
Anticipated expiration: 2035-12-29
Also published as: CN105588497B

Abstract

The invention relates to a method and device of measuring the parallelism of flanges at two ends of a cylindrical shell, belonging to the detection technical field. In the technical scheme, a base (1) is a big-end-down truncated-cone-type structure; the end face central position of a base circular truncated cone (8) is fixedly provided with a pull ring (9); one end of a steel wire (3) is fixed to the pull ring (9) of the base (1), and the other end is in connection with a tension meter (5). The base is inserted into cylindrical shell flange holes; one end of the steel wire (3) is tied to the pull ring (9), and the other end penetrates a cylindrical shell (2) and opposite flange holes and hooks the tension meter (5). Corresponding eight-equal-diversion-point positions of two flanges employ a same pulling force value tension steel wire; coincident parts between the steel wire and eight-equal-diversion-points are marked gradually on the steel wire; the size between two outmost marked points is a parallelism value. The method and the device are easy and effective; a same pulling force value tension steel wire is employed to measure coincident points of eight-equal-diversion parts; the device can avoid measurement errors, is portable, simple and practical, and is suitable for different work occasions in factories and in fields.

Description

A kind of method and device of measuring cylindrical shell two ends parallel flange degree

Technical field

The present invention relates to a kind of method and device of measuring cylindrical shell two ends parallel flange degree, belong to detection technique field.

Background technology

After the flange welding at cylindrical shell two ends; due to factors such as part tolerance accumulation and welding deformations; the flange at two ends there will be uneven situation conventionally; especially some major diameters, many shell rings assembly welding arrive ultra-long barrel together; the depth of parallelism is poorer, there will be crooked phenomenon like this after entirety assembling. Background technology is used the method for the laser measurement depth of parallelism, and equipment manufacturing cost costliness, complicated operation, be only applicable to high-precision applications occasion, can not meet convenient, measure requirement accurately and efficiently.

Summary of the invention

The object of the invention is to provide a kind of method and device of measuring cylindrical shell two ends parallel flange degree, and equipment is simple, cheap, and flexible operation is measured accurately, solves the problem existing in background technology.

Technical scheme of the present invention is:

A kind of device of measuring cylindrical shell two ends parallel flange degree, comprise base, steel wire and tensiometer, base is up-small and down-big circular platform type structure, and its end face center of base round platform is fixed with draw ring, steel wire one end is fixed on the draw ring of base, and the other end connects tensiometer.

On described base round platform, be welded with draw ring.

A method of measuring cylindrical shell two ends parallel flange degree, comprises following steps:

1. cylindrical shell two ends be respectively equipped with left end flange and right-hand member flange, on end face of flange, there are eight flange holes, on the end face of left end flange and right-hand member flange, mark respectively eight equal parts point, the position of Along ent is exactly the central point of flange hole; Steel wire is passed simultaneously to the Along ent of left end flange and right-hand member flange correspondence position;

2. base is up-small and down-big circular platform type structure, its end face center of base round platform is fixed with draw ring, the flange hole that base round platform diameter is inserted to a side flange compared with small end, steel wire passes from inner barrel, passes the Along ent of left end flange and right-hand member flange correspondence position simultaneously; Steel wire one end is fixed on the draw ring of base, the other end ties up on the hook of tensiometer;

3. respectively at eight pairs of Along ent index aperture places, use same value of thrust taut wire, and on steel wire, mark one by one the position that overlaps with Along ent, on steel wire, obtain eight marks;

4. the ultimate range between two marks on steel wire, is approximately cylindrical shell two ends parallel flange degree.

The invention has the beneficial effects as follows: this kind of measuring method is simple and effective, while measuring eight equal parts position coincide point, use same value of thrust taut wire, can avoid measure error, up-small and down-big base frustum cone structure can be applicable to different pore size flange. Measurement mechanism is easy to carry, simple and practical, is suitable in factory and the different work occasion such as field.

Brief description of the drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is base schematic diagram of the present invention;

In figure: base 1, left end flange 2, steel wire 3, cylindrical shell 4, tensiometer 5, right-hand member flange 6, end face of flange Along ent 7, base round platform 8, draw ring 9.

Detailed description of the invention

Below in conjunction with accompanying drawing, by example, the invention will be further described.

A kind of device of measuring cylindrical shell two ends parallel flange degree, comprise base 1, steel wire 3 and tensiometer 5, base 1 is up-small and down-big circular platform type structure, and base round platform 8 its end face centers are fixed with draw ring 9, steel wire 3 one end are fixed on the draw ring 9 of base 1, and the other end connects tensiometer 5.

1. cylindrical shell 4 two ends be respectively equipped with left end flange 2 and right-hand member flange 6, on end face of flange, there are eight flange holes, on the end face of left end flange 2 and right-hand member flange 6, mark respectively eight equal parts point, the position of Along ent is exactly the central point of flange hole; Steel wire is passed simultaneously to the Along ent of left end flange 2 and right-hand member flange 6 correspondence positions;

2. base 1 is up-small and down-big circular platform type structure, base round platform 8 its end face centers are fixed with draw ring 9, the flange hole that base round platform diameter is inserted to a side flange compared with small end, steel wire 3 passes from inner barrel, passes the Along ent of left end flange 2 and right-hand member flange 6 correspondence positions simultaneously; Steel wire one end is fixed on the draw ring 9 of base, the other end ties up on the hook of tensiometer 5;

With reference to accompanying drawing 1,2, a kind of device of measuring cylindrical shell two ends parallel flange degree, comprises base 1, steel wire 3, tensiometer 5, and steel wire 3 one end are fixed on the draw ring 9 of base 1, and the other end catches on tensiometer 5. On base round platform 8, be welded with draw ring 9.

A kind of method of measuring cylindrical shell two ends parallel flange degree, use said apparatus carries out, comprise following processing step: 1. on the left end flange 2 of cylindrical shell 4 and right-hand member flange 6, mark respectively eight equal parts point 7, by steel wire 3 simultaneously through the Along ent C point of two the flange correspondence positions in left and right; 2. steel wire 3 passes from cylindrical shell 4 inside, and its one end is fixed on draw ring 9, base 1 taper end is inserted to the C location hole of left end flange 2, and the steel wire other end passes the C location hole of right-hand member flange 6 and ties up on tensiometer 5 hooks; 3. use fixing value of thrust L taut wire 3, on steel wire 3, mark the position that overlaps with Along ent C, measure other Along ents such as two flange A-A, B-B, D-D by same method; 4. on steel wire 3, the distance between 2 marks of outermost is approximately cylindrical shell two ends parallel flange degree.

Claims

1. measure the device of cylindrical shell two ends parallel flange degree for one kind, it is characterized in that comprising base (1), steel wire (3) and tensiometer (5), base (1) is up-small and down-big circular platform type structure, its end face center of base round platform (8) is fixed with draw ring (9), steel wire (3) one end is fixed on the draw ring (9) of base (1), and the other end connects tensiometer (5).

2. the device of measurement cylindrical shell according to claim 1 two ends parallel flange degree, is characterized in that being welded with on described base round platform (8) draw ring (9).

3. measure a method for cylindrical shell two ends parallel flange degree, it is characterized in that comprising following steps:

1. cylindrical shell (4) two ends be respectively equipped with left end flange (2) and right-hand member flange (6), on end face of flange, there are eight flange holes, on the end face of left end flange (2) and right-hand member flange (6), mark respectively eight equal parts point, the position of Along ent is exactly the central point of flange hole; Steel wire is passed simultaneously to the Along ent of left end flange (2) and right-hand member flange (6) correspondence position;

2. base (1) is up-small and down-big circular platform type structure, its end face center of base round platform (8) is fixed with draw ring (9), base round platform diameter is inserted to the flange hole of a side flange compared with small end, steel wire (3) passes from inner barrel, passes the Along ent of left end flange (2) and right-hand member flange (6) correspondence position simultaneously; The draw ring (9) that steel wire one end is fixed on to base is upper, and the other end ties up on the hook of tensiometer (5);