Vernier detection ruler for detecting thickness of surfacing layer

Abstract

The utility model relates to the technical field of measuring tools, and discloses a vernier detection ruler for thickness inspection of a surfacing layer, which comprises a measuring scale, a vernier scale, a reference scale and a measuring jaw, the measuring scale and the vernier scale are marked with scales according to the vernier measuring principle, the measuring scale can slide along the direction of the vernier scale, and the measuring scale is slidably mounted on one side of the vernier scale provided with the scales. The reference ruler and the vernier scale are of an integrated structure and are arranged perpendicular to the scale direction of the vernier scale, the 0-position scale line of the vernier scale is flush with the reference surface A of the reference ruler, the measuring jaw and the measuring ruler are of an integrated structure, and the reference surface of the measuring jaw is flush with the 0-position scale line of the measuring ruler. The reference ruler can be attached to one side of the surfacing layer to be measured, and the measuring jaw is fixed to the other side of the surfacing layer to be measured, so that the thickness of the surfacing layer of the tapping groove of the nuclear power equipment can be accurately measured. The technical problem that measuring equipment in the prior art cannot accurately measure the thickness of the surfacing layer of the tapping groove of the nuclear power equipment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to a vernier measuring ruler used for checking the thickness of a surfacing welding layer at an opening groove. Background Art

[0002] In the field of nuclear power equipment manufacturing, equipment shells are often manufactured in the form of cladding. For the thickness measurement of the cladding layer, ultrasonic testing and traditional ruler and gauge measurement are generally used. For the cladding structure in the opening groove area, its structure has the following characteristics: 1. The ultrasonic testing operation surface is narrow; 2. The bonding surface between the cladding layer and the parent material is not uniform; 3. The groove section is not a straight angle or a right angle. The above characteristics result in the measurement data obtained by either ultrasonic testing or traditional ruler and gauge measurement methods cannot guarantee accuracy.

[0003] The utility model with the authorization publication number CN214621017U in the prior art discloses a digital display thickness measuring device, including a top measuring rod, a digital display, a linear displacement sensor, a parallel moving ruler and a standard magnetic seat, the standard magnetic seat is provided with a parallel moving ruler, one end of the parallel moving ruler is connected to the digital display, a top measuring rod is inserted in the digital display, and a linear displacement sensor is provided between the digital display and the top measuring rod. The above technical solution can only measure the situation where there is a height difference in the flat surfacing, and cannot directly measure the thickness of the groove isolation layer of the surfacing layer. Utility Model Content

[0004] In order to mainly solve the technical problem that the measuring equipment in the prior art cannot ensure the accuracy when measuring the thickness of the cladding layer of the opening groove, the utility model proposes a vernier detection ruler for checking the thickness of the cladding layer.

[0005] A vernier measuring ruler for checking the thickness of a cladding layer comprises a ruler and a vernier ruler. The ruler and the vernier ruler are marked with scales according to the vernier measurement principle. The ruler can slide along the direction of the vernier ruler. The ruler is slidably installed on a side of the vernier ruler with scales. The ruler also comprises a reference ruler and a measuring claw. The reference ruler and the vernier ruler are an integrated structure and are arranged perpendicular to the scale direction of the vernier ruler. The 0-position scale line of the vernier ruler is flush with the reference surface A of the reference ruler. The measuring claw and the ruler are an integrated structure and the reference surface of the measuring claw is flush with the 0-position scale line of the ruler.

[0006] The above-mentioned technical solution of the vernier ruler for checking the thickness of the weld overlay layer also includes a set screw, which is arranged on the vernier ruler and can fix the relative position of the ruler and the vernier ruler.

[0007] The beneficial effects of the utility model include: by providing a reference ruler that can be attached to one side of the cladding layer to be measured, and a measuring claw fixed to the other side of the cladding layer to be measured, the thickness of the cladding layer of the opening groove of nuclear power equipment can be measured more accurately, which solves the technical problem that the measuring equipment in the prior art cannot measure the thickness of the cladding layer of the opening groove of nuclear power equipment more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a schematic diagram of the structure of a vernier measuring ruler for checking the thickness of a cladding layer.

[0009] Figure 2 The utility model is a schematic diagram of an implementation method of a vernier measuring ruler for checking the thickness of a cladding layer.

[0010] Markings in the figure are: 1- ruler, 2- vernier ruler, 3- reference ruler, 4- measuring claws, 5- screws. DETAILED DESCRIPTION

[0011] The utility model is described below in conjunction with the accompanying drawings.

[0012] like Figure 1 As shown, the utility model of the vernier detection ruler for checking the thickness of the cladding layer comprises a ruler 1 and a vernier ruler 2. The ruler 1 and the vernier ruler 2 are marked with scales according to the vernier measurement principle. The ruler 1 can slide along the direction of the vernier ruler 2. The ruler 1 is slidably installed on a side of the vernier ruler provided with scales. The ruler 1 also comprises a reference ruler 3 and a measuring claw 4. The reference ruler 3 and the vernier ruler 2 are an integrated structure and are arranged perpendicular to the scale direction of the vernier ruler 2. The 0-position scale line of the vernier ruler 2 is flush with the reference surface A of the reference ruler. The measuring claw 4 and the ruler 1 are an integrated structure and the reference surface of the measuring claw 4 is flush with the 0-position scale line of the ruler 1. The thickness of the cladding layer of the opening groove of the nuclear power equipment can be measured more accurately.

[0013] Furthermore, it also includes a set screw 5, which is arranged on the vernier scale 2 and can fix the relative position of the ruler 1 and the vernier scale 2 to facilitate reading.

[0014] When the utility model is put into use, the surface of the groove to be measured is first cleaned to reduce the error that may be caused by impurities, and the fusion line between the groove parent material and the cladding layer is displayed by a chemical method. Then, the reference surface A of the reference ruler 3 is fitted with the surface of the groove, and the ruler 1 is slid so that the tip of the measuring claw 4 coincides with the above fusion line. After alignment, the set screw 5 is tightened to fix the relative position of the ruler 1 and the vernier ruler 2, and then the data on the caliper is read. The indicated value is the thickness value of the cladding layer.

[0015] Compared with the prior art, the vernier inspection ruler for welding layer and thickness inspection proposed by the utility model has the following advantages: by providing a structure with a reference ruler 3 integrated with the vernier ruler 2 and a measuring claw 4 integrated with the measuring ruler 1, the thickness of the welding layer of the opening groove of the nuclear power equipment can be obtained more accurately by fitting the reference surface A on the reference ruler 3 to one side of the welding layer and fitting the measuring claw 3 to the other side of the welding layer, thereby solving the technical problem that the measuring equipment in the prior art cannot accurately measure the thickness of the welding layer of the opening groove of the nuclear power equipment.

Claims

1. A vernier measuring ruler for checking the thickness of a cladding layer, comprising a ruler (1) and a vernier ruler (2), wherein the ruler (1) and the vernier ruler (2) are marked with scales according to the vernier measurement principle, the ruler (1) can slide along the direction of the vernier ruler (2), and the ruler (1) is slidably mounted on a side of the vernier ruler (2) provided with scales, characterized in that: The invention also comprises a reference ruler (3) and a measuring jaw (4); the reference ruler (3) and the vernier ruler (2) are of an integrated structure and are arranged perpendicular to the scale direction of the vernier ruler (2); the 0-position scale line of the vernier ruler (2) is flush with a reference surface A of the reference ruler (3); the measuring jaw (4) and the ruler (1) are of an integrated structure and the reference surface of the measuring jaw (4) is flush with the 0-position scale line of the ruler (1).

2. The vernier ruler for checking the thickness of the cladding layer according to claim 1 is characterized in that: It also comprises a set screw (5), which is arranged on the vernier scale (2) and can fix the relative position of the measuring ruler (1) and the vernier scale (2).

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