Boiler welding seam inspection device

Abstract

The utility model relates to the technical field of boilers, in particular to a boiler welding seam inspection device which comprises a measuring tool body, the whole measuring tool body is of an arc-shaped structure, a lower measuring opening is formed in the lower portion of the middle of the measuring tool body, an upper measuring opening is formed in the upper portion of the middle of the measuring tool body, and two lower binding faces are arranged at the positions, located on the two sides of the lower measuring opening, of the measuring tool body. The measuring tool main body is provided with two upper binding surfaces at two sides of the upper measuring port. In the boiler welding seam inspection device, the arc-shaped structure of the measuring tool body can be tightly attached to the arc-shaped outer wall of the boiler, it is ensured that the relative position of the device and the boiler is stable in the detection process, and the detection precision and reliability are improved. And through the arrangement of the lower measuring port and the upper measuring port, the device can detect the outer wall welding seam and the inner wall welding seam of the boiler at the same time, and the detection requirements of different types of welding seams are met. And meanwhile, the bottom surface of the measuring port is of an arc-shaped structure, and the corresponding arc radius is matched with the section radius of the boiler wall, so that the measuring accuracy is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a boiler weld inspection device. Background Art

[0002] Welding is a crucial link in the process of boiler manufacturing and maintenance. The quality of welding is directly related to the safe operation and service life of the boiler. Therefore, the inspection of boiler welds is particularly important. Weld quality problems, such as cracks, inclusions, pores, incomplete penetration or lack of fusion, may have a serious impact on the structural strength and safety performance of the boiler.

[0003] Traditional weld inspection methods mostly rely on manual experience and visual inspection, but these methods often have problems such as low efficiency, low accuracy, and susceptibility to human factors. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler weld inspection device to solve the problems that the traditional weld inspection methods proposed in the above background technology mostly rely on manual experience and visual inspection, but these methods often have low efficiency, low accuracy and are easily affected by human factors.

[0005] To achieve the above-mentioned purpose, the utility model provides a boiler weld inspection device, including a measuring tool body, the measuring tool body as a whole is an arc-shaped structure, a lower measuring port is arranged at the lower middle part of the measuring tool body, an upper measuring port is arranged at the upper middle part of the measuring tool body, two lower fitting surfaces are arranged at both sides of the lower measuring port of the measuring tool body, two upper fitting surfaces are arranged at both sides of the upper measuring port of the measuring tool body, and a positioning center line is arranged vertically in the middle of the measuring tool body.

[0006] Preferably, a hanging hole is provided at one end of the measuring tool body.

[0007] Preferably, the lower fitting surface and the upper fitting surface are arc-shaped structures with the center at the center of the boiler, the arc radius corresponding to the lower fitting surface is the outer wall cross-sectional radius of the boiler, and the arc radius corresponding to the upper fitting surface is the inner wall cross-sectional radius of the boiler.

[0008] Preferably, the bottom surfaces of the lower measuring port and the upper measuring port are both arc-shaped structures with the center at the center of the boiler, the arc radius corresponding to the lower measuring port is larger than the outer wall cross-sectional radius of the boiler, and the arc radius corresponding to the upper measuring port is smaller than the inner wall cross-sectional radius of the boiler.

[0009] Preferably, the upper fitting surface includes a first upper fitting surface and a second upper fitting surface.

[0010] Preferably, the lower fitting surface includes a first lower fitting surface and a second lower fitting surface.

[0011] Preferably, the distance between the lower fitting surface and the lower measuring port is 20 mm, and the distance between the upper fitting surface and the upper measuring port is 20 mm.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the boiler weld inspection device, the arc structure of the measuring tool body can fit tightly with the arc outer wall of the boiler, ensuring the relative position of the device and the boiler is stable during the detection process, and improving the accuracy and reliability of the detection. The setting of the lower measuring port and the upper measuring port enables the device to detect the outer wall weld and the inner wall weld of the boiler at the same time, meeting the detection requirements of different types of welds. At the same time, the bottom surface of the measuring port is an arc structure, and the corresponding arc radius matches the radius of the boiler wall section, further ensuring the accuracy of the measurement. The design of the lower fitting surface and the upper fitting surface enables the device to form a stable support and positioning when fitting the boiler wall, avoiding the measurement error caused by the shaking or offset of the device. At the same time, the fitting surface is an arc structure, and the corresponding arc radius matches the radius of the inner and outer walls of the boiler, ensuring the tightness and stability of the fit. By setting the positioning center line, the device can be easily positioned and aligned, simplifying the operation process and improving the detection efficiency. At the same time, the setting of the hanging hole makes the device more convenient to store and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a dimensioning schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the edge angle concave detection of the utility model;

[0017] Figure 4 This is a schematic diagram of the convex detection of edge angles of the utility model;

[0018] Figure 5 This is a schematic diagram of the outer wall weld excess height detection of the utility model;

[0019] Figure 6 This is a schematic diagram of the inner wall weld excess height detection of the utility model;

[0020] Figure 7 Schematic diagram of the detection of the misalignment of the outer wall weld of the utility model

[0021] Figure 8 This is a schematic diagram of the inner wall weld misalignment detection method of the utility model.

[0022] The meaning of each number in the figure is:

[0023] 1. Measuring tool body; 11. Lower measuring port; 12. Upper measuring port; 13. First upper fitting surface; 14. First lower fitting surface; 15. Second upper fitting surface; 16. Second lower fitting surface; 17. Hanging hole; 18. Positioning center line. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a boiler weld inspection device, such as Figure 1-Figure 8 As shown, it includes a measuring tool body 1, which is an arc-shaped structure as a whole. A lower measuring port 11 is provided at the lower middle part of the measuring tool body 1, an upper measuring port 12 is provided at the upper middle part of the measuring tool body 1, two lower fitting surfaces are provided at both sides of the lower measuring port 11 of the measuring tool body 1, two upper fitting surfaces are provided at both sides of the upper measuring port 12 of the measuring tool body 1, and a positioning center line 18 is vertically provided in the middle of the measuring tool body 1 for locating the weld.

[0026] In this embodiment, a hanging hole 17 is provided at one end of the measuring tool body 1 for easy hanging and storage.

[0027] Specifically, the lower fitting surface and the upper fitting surface are arc-shaped structures with the center at the center of the boiler. The arc radius corresponding to the lower fitting surface is the cross-sectional radius of the outer wall of the boiler, which is convenient for fitting with the outer wall of the boiler. The arc radius corresponding to the upper fitting surface is the cross-sectional radius of the inner wall of the boiler, which is convenient for fitting with the inner wall of the boiler.

[0028] Furthermore, the bottom surfaces of the lower measuring port 11 and the upper measuring port 12 are both arc-shaped structures with the center at the center of the boiler. The arc radius corresponding to the lower measuring port 11 is larger than the outer wall cross-sectional radius of the boiler, and the arc radius corresponding to the upper measuring port 12 is smaller than the inner wall cross-sectional radius of the boiler.

[0029] Furthermore, the upper fitting surface includes a first upper fitting surface 13 and a second upper fitting surface 15, so as to facilitate fitting with the inner wall of the boiler.

[0030] Furthermore, the lower fitting surface includes a first lower fitting surface 14 and a second lower fitting surface 16, so as to facilitate fitting with the outer wall of the boiler.

[0031] Furthermore, the distance between the lower fitting surface and the lower measuring port 11 is 20 mm, and the distance between the upper fitting surface and the upper measuring port 12 is 20 mm.

[0032] Detection principle:

[0033] 1. Measuring method of edge angle

[0034] like Figure 3 When the longitudinal seam of the cylinder is concave: the lower end of the special inspection tool is close to the outer wall of the cylinder, the positioning center line 18 is aligned with the highest point of the weld center, and the distance H-20mm + weld excess height e between the bottom surface of the lower measuring port 11 and the outer wall of the boiler is measured, which is the angle of the weld at this location.

[0035] like Figure 4 When the longitudinal seam of the cylinder is convex: the upper end of the special inspection tool is close to the inner wall of the cylinder, the center positioning line 18 is aligned with the highest point of the weld center, and the distance H-20mm + weld excess height e between the bottom surface of the upper measuring port 12 and the inner wall of the boiler is measured, which is the angle of the weld at that location.

[0036] 2. Method for measuring the misalignment:

[0037] like Figure 5-6 , the lower end face is close to the surface of the base material, the template positioning center line 18 is aligned with the heat affected zone of the weld, and the distances H1 and H2 from the heat affected zones on both sides of the weld to the corresponding measuring ports (the lower measuring port 11 is for measuring the outer wall, and the upper measuring port 12 is for measuring the inner wall) are measured respectively with a depth vernier caliper, a metal ruler or a steel tape measure. The difference between the H1 and H2 data measured on both sides is the misalignment of the weld at that location.

[0038] 3. Weld excess height measurement method:

[0039] like Figure 7 After the cylinder is calibrated, the lower end face is close to the outer surface of the cylinder, the template positioning center line 18 is aligned with the center (highest point) of the weld, and a depth vernier caliper, metal ruler or steel tape measure is used to measure the distance H from the weld to the bottom of the lower measuring port 11. The data obtained by 20-H is the excess height of the outer weld of the cylinder at that location.

[0040] like Figure 8 After the cylinder is calibrated, the upper end face of the detection tool is close to the inner surface of the cylinder, the template positioning center line 18 is aligned with the center (highest point) of the weld, and a depth vernier caliper or metal ruler or steel tape measure is used to measure the distance H from the weld to the upper measuring port 12. The data obtained from 20-H is the residual height of the weld inside the cylinder.

[0041] It is worth noting that this weld inspection tool is not limited to use in production. The edge angle, weld excess height and misalignment of the longitudinal welds of the boiler pressure vessel shell in service can also be inspected.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A boiler weld inspection device, comprising a measuring tool body (1), characterized in that: The measuring tool body (1) is an arc-shaped structure as a whole. A lower measuring port (11) is provided at the lower middle part of the measuring tool body (1), and an upper measuring port (12) is provided at the upper middle part of the measuring tool body (1). The measuring tool body (1) is provided with two lower fitting surfaces at both sides of the lower measuring port (11), and the measuring tool body (1) is provided with two upper fitting surfaces at both sides of the upper measuring port (12). A positioning center line (18) is vertically provided at the middle part of the measuring tool body (1).

2. The boiler weld inspection device according to claim 1, characterized in that: A hanging hole (17) is provided at one end of the measuring tool body (1).

3. The boiler weld inspection device according to claim 1, characterized in that: The lower fitting surface and the upper fitting surface are arc-shaped structures with the center at the center of the boiler. The arc radius corresponding to the lower fitting surface is the outer wall cross-sectional radius of the boiler, and the arc radius corresponding to the upper fitting surface is the inner wall cross-sectional radius of the boiler.

4. The boiler weld inspection device according to claim 3 is characterized in that: The bottom surfaces of the lower measuring port (11) and the upper measuring port (12) are both arc-shaped structures with the center at the center of the boiler; the arc radius corresponding to the lower measuring port (11) is greater than the radius of the outer wall section of the boiler, and the arc radius corresponding to the upper measuring port (12) is smaller than the radius of the inner wall section of the boiler.

5. The boiler weld inspection device according to claim 1, characterized in that: The upper bonding surface comprises a first upper bonding surface (13) and a second upper bonding surface (15).

6. The boiler weld inspection device according to claim 1, characterized in that: The lower fitting surface comprises a first lower fitting surface (14) and a second lower fitting surface (16).

7. The boiler weld inspection device according to claim 4, characterized in that: The distance between the lower fitting surface and the lower measuring port (11) is 20 mm, and the distance between the upper fitting surface and the upper measuring port (12) is 20 mm.

Images