CN210242749U

CN210242749U - Edge angle detection device in sliding type cylinder

Info

Publication number: CN210242749U
Application number: CN201920597553.8U
Authority: CN
Inventors: Guangsen Fan; 范广森; Changliang Yu; 于昌亮; Liuwei Zhang; 张刘伟
Original assignee: Nanjing Sanfang Chemical Equipment Supervision Co ltd
Current assignee: Nanjing Sanfang Chemical Equipment Supervision Co ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-04-03
Anticipated expiration: 2029-04-28

Abstract

The utility model relates to a sliding type cylinder inner edge angle detection device, which comprises a main scale, an auxiliary scale and a sliding scale; the main scale is provided with scales which gradually increase from a central point 0 to two sides; the attached ruler is attached to the main ruler and is parallel to the main ruler; the auxiliary scale is provided with a theoretical vertical distance value L from the current scale to the inner wall of the cylinder body under each scale corresponding to the main scale from a central point 0; the sliding ruler consists of a long probe and a sliding block, and the sliding block is sleeved on the main ruler and the auxiliary ruler and slides along the main ruler and the auxiliary ruler; the long probe is fixed in the sliding block and is vertical to the main scale and the auxiliary scale; and a capacitive grating sensor structure is arranged between the sliding block and the long probe. The device for detecting the angle of the inner edge of the sliding cylinder of the utility model obtains the measured value in real time by utilizing the horizontal and vertical movement of the sliding block and the long probe; and the theoretical vertical distance value at the current position of the sliding ruler is indicated by the auxiliary ruler and is compared with the real-time measured value, so that the deviation value result is clear, the operation is simple, and the measurement is accurate.

Description

Edge angle detection device in sliding type cylinder

Technical Field

The utility model particularly relates to an interior edges and corners angle detection device of slidingtype barrel.

Background

The size of the edge angle formed in the circumferential direction and the axial direction of the welded joint is represented by an edge angle (E). The edge angle is mainly generated due to the reasons of irregular pre-bending operation, welding deformation and the like. The existence of edges and corners has formed pressure vessel's geometry discontinuous, cause the stress concentration of edges and corners department, and then make the local bearing capacity of pressure vessel decline, endanger pressure vessel's safe operation, in actual production, the sample plate carries out edges and corners measurement in the preparation generally, but pressure vessel's diameter is not of uniform size, if carry out the mode of measuring with the interior sample plate of preparation, need the sample plate of a large amount of different specifications, the preparation of sample plate is more loaded down with trivial details, and the common thin plywood preparation that is used, easy wearing and tearing, and easy rotten because of the improper cause of the storage wets.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior arris angle degree detection device of slidingtype barrel.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a sliding type cylinder inner edge angle detection device comprises a main scale, an auxiliary scale and a sliding scale;

the main ruler is a rectangular flat ruler, and scales which are gradually increased from a central point 0 to two sides are arranged on the main ruler;

the auxiliary ruler is a rectangular flat ruler, and is attached to the main ruler and parallel to the main ruler; the auxiliary scale is provided with a theoretical vertical distance value L from the current scale to the inner wall of the cylinder body under each scale corresponding to the main scale from a central point 0; the central points 0 of the auxiliary scale and the main scale are aligned;

the sliding ruler consists of a long probe and a sliding block, and the sliding block is sleeved on the main ruler and the auxiliary ruler and slides along the main ruler and the auxiliary ruler; the slide block is provided with a through hole, and the long probe passes through the through hole and is fixed in the slide block and is vertical to the main scale and the auxiliary scale; a movable grid structure is arranged at the contact position of the sliding block and the long probe, and a fixed grid structure is arranged inside the long probe; a hollow-out part is arranged in the tail section of the long probe, and a spring is fixed in the hollow-out part, so that the long probe can move in a telescopic mode in a direction perpendicular to the main scale.

As a further improvement of the utility model, the length of the main scale is an integral multiple of 300 mm. According to the definition of the edge angle, the length of the main scale should not be less than 1/6 and not less than 300mm of the diameter, so as to facilitate the standardization of the L value, and the diameter of the cylinder of the common equipment is generally about 1 m-5 m, therefore, the length of the main scale can be 300mm, 600mm, 900mm, or other 300mm integer multiples.

As a further improvement of the utility model, the auxiliary ruler is movably connected with the main ruler. Corresponding to different equipment barrel diameters, the main scale is used as the chord of the section circle of the barrel, the corresponding arc curvature can be distinguished, so that the L value can be changed, the auxiliary scales with different standards are required to be replaced corresponding to the barrels with different diameters, and the auxiliary scales are movably connected with the main scale and are more convenient to replace.

As a further improvement of the utility model, the long probe top is provided with a ball. The long probe slides and stretches along the inner wall of the cylinder body, the relative displacement of the long probe and the sliding block is recorded, the size of the top of the long probe is as small as possible, and the ball is arranged to be in contact with the inner wall of the cylinder body, so that the friction between the long probe and the inner wall of the cylinder body can be reduced.

As a further improvement of the utility model, be equipped with the fretwork window of falling triangle-shaped on the slider, show the main scale, attach the scale of chi. The triangular window facilitates positioning of the reading.

As a further improvement, the slider is provided with a display device for displaying the measurement reading of the sliding ruler.

As a further improvement of the utility model, the main ruler and the auxiliary ruler are made of tool steel.

As a further improvement, the attached ruler is made of paper. The auxiliary ruler can be made of tool steel made of half of vernier calipers, paper is more convenient to use, when a cylinder with an unusual diameter exists, the L values of different points can be calculated firstly through software such as AutoCAD (computer aided design), an independent auxiliary ruler is customized and attached to the main ruler.

The device for detecting the edge angle in the sliding cylinder of the utility model utilizes the principle of a capacitive grating sensor to obtain a measurement value in real time through the horizontal and vertical movement of the sliding block and the long probe; and the main ruler is used for indicating the position of the sliding ruler, the auxiliary ruler is used for indicating the theoretical vertical distance value at the current position of the sliding ruler, the theoretical vertical distance value is compared with the real-time measured value, the deviation value result is clear at a glance, the method is used for detecting the edge angle, the operation is simple, and the measurement is accurate.

Drawings

FIG. 1 is a schematic front view of a sliding type cylinder inner edge angle detection device;

FIG. 2 is a schematic side view of the sliding barrel inner edge angle detection device;

in the figure, 1 is a main scale; 2 is an attached ruler; 3 is a slide block; 31 is a hollow window; 32 is a display device; 4 is a long probe; 41 is a spring; 42 is a ball; 5 is the inner wall of the cylinder.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.

The device for detecting the edge angle in the sliding cylinder shown in fig. 1-2 comprises a main scale 1, an auxiliary scale 2 and a sliding scale;

the main ruler 1 is a rectangular flat ruler and is provided with scales which are gradually increased from a central point 0 to two sides; the main ruler 1 is made of tool steel; the length of the main ruler 1 is an integral multiple of 300 mm; the auxiliary ruler 2 is a rectangular flat ruler, and the auxiliary ruler 2 is attached to the main ruler 1 and is parallel to the main ruler 1; the auxiliary scale 2 is provided with a theoretical vertical distance value L from the current scale to the inner wall of the cylinder under each scale corresponding to the main scale 1 from a central point 0; the center points 0 of the auxiliary ruler 2 and the main ruler 1 are aligned; the auxiliary ruler 2 is made of tool steel or paper. The main scale 1 is movably connected with the auxiliary scale 2.

The sliding ruler consists of a long probe 4 and a sliding block 3, and the sliding block 3 is sleeved on the main ruler 1 and the auxiliary ruler 2 and slides along the main ruler 1 and the auxiliary ruler 2; a through hole is arranged on the sliding block 3, and the long probe 4 passes through the through hole and is fixed in the sliding block 3 and is vertical to the main scale 1 and the auxiliary scale 2; a moving grid structure is arranged at the contact position of the sliding block 3 and the long probe 4, and a fixed grid structure is arranged inside the long probe 4; the slider 3 is provided with an inverted triangular hollow window 31 and a display device 32; a hollow part is arranged in the tail section of the long probe 4, and a spring 41 is fixed in the hollow part, so that the long probe 4 can move in a telescopic manner in a direction perpendicular to the main scale 1. The long probe 4 is provided with a ball 42 on top.

The utility model discloses a measurement principle as follows:

sliding the sliding ruler 3 from a proper position at one end of the main ruler 1 to a proper position at the other end, keeping the long probe 4 to be clung to the inner wall through a spring 41 in an elongated state at the root part in the sliding process, and measuring the linear distance from the cylinder body of the long probe 4 to the main ruler 1 at each position (namely the extending length of the long probe 4) through a capacitive grating sensor structure; meanwhile, the main scale 1 and the auxiliary scale 2 can obtain the position X of the current long probe 4 and the theoretical straight-line distance L corresponding to the current position X. Theoretically, the extension length of the long probe 4 should be equal to the reading L on the lower attached ruler 2 at the moment, and the larger the deformation of the cylinder body is, the larger the deviation of the reading at the position relative to the theoretical value is, and the edge angle can be judged.

For structural reasons, when the amount of the edge angle is finally determined, the position with the largest edge angle needs to be aligned to the position of the middle point 0 of the main scale 1 as much as possible, and the measured deviation value is the edge angle value conforming to the edge angle definition. Since it is difficult to determine the position with a larger deviation value from the center of the main scale, the position with a larger deviation value from the center of the main scale is determined only qualitatively to determine whether the deviation is large.

Claims

1. A sliding type cylinder inner edge angle detection device is characterized by comprising a main scale, an auxiliary scale and a sliding scale;

2. The sliding barrel inside corner angle detecting device according to claim 1, wherein the length of the main scale is an integral multiple of 300 mm.

3. The sliding cylinder internal edge angle detection device as claimed in claim 1, wherein the auxiliary scale is movably connected with the main scale.

4. The sliding barrel inside corner angle detecting device as claimed in claim 1, wherein the long probe is provided with a ball at the top.

5. The device for detecting the internal edge angle of the sliding cylinder according to claim 1, wherein the slider is provided with an inverted triangular hollow window for displaying the scales of the main scale and the auxiliary scale.

6. The sliding cylinder inner edge angle detection device as claimed in claim 1, wherein the sliding block is provided with a display device for displaying the measurement reading of the sliding ruler.

7. The device for detecting the internal edge angle of the sliding cylinder according to claim 1, wherein the main scale and the auxiliary scale are made of tool steel.

8. The device for detecting the internal edge angle of the sliding cylinder according to claim 1, wherein the auxiliary ruler is made of paper.