Multi-bend special-shaped copper pipe embedding detection device

Abstract

The utility model discloses a multi-bend special-shaped copper pipe embedding detection device which comprises a plurality of positioning blocks which are fixedly connected to a reference plate. The positioning block is provided with a positioning surface, a positioning groove is formed in the positioning surface, and the positioning groove is attached to a local pipe section of a to-be-detected pipe; the local pipe section comprises an end part pipe section, a bent part pipe section and a splicing part pipe section, the positioning groove comprises a straight groove part and a bent groove part, the straight groove part is attached to the straight pipe part of the local pipe section, and the straight groove part is provided with an attachment sensing module and a gap detection module. According to the utility model, high-precision rapid detection of the bending size of the spatial multi-angle bending special-shaped copper pipe is realized, the detection difficulty is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe inspection tools, in particular to a multi-bend special-shaped copper pipe fitting detection device. Background Art

[0002] In the installation of water collector pipes, complex piping routes often require complex bending processes to prevent interference between copper pipes. This results in special-shaped pipe fittings with multiple bends at various angles. These fittings require high dimensional accuracy, primarily influenced by the precision of the multiple elbows, including the positioning of the elbows, the spacing between adjacent elbows, and the direction and angle of the bends. Any deviations can prevent the copper pipes from being properly installed in the pipeline. However, direct dimensional inspection of these fittings is difficult and inaccurate, and measuring each parameter individually is labor-intensive and inefficient. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a multi-bend special-shaped copper tube fitting detection device, which can realize high-precision and rapid detection of the bending dimensions of special-shaped copper tubes with multi-angle bending in space, reduce the detection difficulty and improve the detection efficiency.

[0004] Technical solution: To achieve the above purpose, the utility model provides a multi-bend special-shaped copper tube fitting detection device, comprising a plurality of positioning blocks, wherein the plurality of positioning blocks are fixedly connected to a reference plate;

[0005] The positioning block is provided with a positioning surface, and a positioning groove is provided on the positioning surface, and the positioning groove is fitted with a local pipe section of the pipe to be inspected;

[0006] The local pipe section includes an end pipe section, a pipe section at the bend and a pipe section at the splicing. The positioning groove includes a straight groove part and a curved groove part. The straight groove part is fitted with the straight pipe part of the local pipe section. The straight groove part is provided with a fitting sensing module and a gap detection module.

[0007] Furthermore, the positioning surface includes multiple unit surfaces, and the multiple unit surfaces are respectively parallel to the straight pipe parts with multiple different extension directions; the multiple unit surfaces are connected in sequence along the connection order of the corresponding multiple straight pipe parts, and in the connection direction, there is an intersection line between two adjacent unit surfaces, and the multiple intersection lines are parallel to each other.

[0008] Furthermore, the positioning groove is a groove with a semicircular cross-section.

[0009] Furthermore, the cross-sectional radius of the straight groove portion is consistent with the outer diameter of the tube body.

[0010] Furthermore, the cross-sectional radius of the curved groove portion is greater than the cross-sectional radius of the straight groove portion.

[0011] Furthermore, the fitting sensing module is embedded in the bottom of the straight groove portion.

[0012] Furthermore, the straight pipe section formed by splicing two straight pipe parts has the gap detection module provided on the side wall of the slot corresponding to the straight slot part, the gap detection module is provided corresponding to the splicing seam, and the fitting sensing modules are provided on both sides of the gap detection module.

[0013] Beneficial Effects: This utility model provides a multi-bend special-shaped copper tube fitting detection device that detects whether the bending dimensions of the tube meet preset standards by observing the degree of fitting between the tube and the positioning groove and measuring the fit between the tube and the positioning groove. It is simple to operate, fast and efficient. The design of the positioning surface and positioning groove on the positioning block simplifies the machining difficulty of the positioning groove and improves the trajectory accuracy of the positioning groove, thereby ensuring the reliability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the local structure of the positioning groove and the sensor layout of an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the relative position relationship of multiple unit surfaces of the positioning surface of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] As attached Figure 1-3 The multi-bend special-shaped copper tube fitting detection device includes several positioning blocks 1, and multiple positioning blocks 1 are fixedly connected to a reference plate 2; the positioning blocks 1 are provided with a positioning surface 3, and the positioning surface 3 is provided with a positioning groove 4, and the positioning groove 4 is in contact with a local pipe section of the pipe 5 to be inspected.

[0019] This solution utilizes a modular mold-type inspection fixture. Multiple positioning blocks are used to provide multi-point support and positioning for multi-bend, irregularly shaped pipes. The support area is a certain length of pipe. These positioning blocks are fixed and distributed on a reference plate at preset positions, allowing the positioning grooves on the multiple positioning blocks to connect to form the preset bending trajectory of the pipe. By inserting the bent and shaped pipe into the corresponding positioning grooves, the degree of fit between the pipe and the positioning groove is observed and measured to verify whether the bending dimensions of the pipe meet the preset standards.

[0020] The local pipe section includes an end pipe section, a pipe section at the bend and a pipe section at the splicing section. The positioning groove 4 includes a straight groove part 41 and a curved groove part 42. The straight groove part 41 is fitted with the straight pipe part of the local pipe section. The straight groove part 41 is provided with a fitting sensing module 6 and a gap detection module 7.

[0021] When installing pipe fittings, if the pipe fittings to be tested are composed of multiple short pipe sections, install them one by one from one end.

[0022] During installation, first snap the straight pipe into the straight groove, then move or rotate the elbow to snap into place. The fitting is positioned by fitting the straight groove into the straight pipe, and the elbow creates a space within the permitted shape accuracy range. As long as the elbow fits within the elbow, the dimensions are met.

[0023] Preferably, in the positioning groove, both ends of any curved groove portion are connected with a straight groove. Since the copper tube has good ductility, the straight tube portion is not deformed by the processing through appropriate heating conditions during the bending process. Therefore, the straight tube on either side can be perfectly fitted with the corresponding straight groove portion alone. At this time, only when the dimensional accuracy of the elbow is correct can the straight tube portions on both sides be fully fitted with the corresponding straight groove portions at the same time. In addition, the portion of the multi-bend pipe fitting close to the pipe end and the interface portion with another pipe fitting are usually straight tube portions. Therefore, by arranging a fitting sensing module on the straight groove portion to detect the fitting degree of the multiple straight tube portions on the multi-bend special-shaped pipe fitting with the positioning groove, it is possible to effectively reflect the degree of overlap between the actual bending trajectory of the pipe fitting to be tested and the preset bending trajectory depicted by the positioning groove. When the sensing signals of all the fitting sensing modules 6 are reflected as fitting in place, it indicates that the bending dimensional accuracy of the multiple bends of the pipe fitting in terms of bending length, bending point, bending direction and bending angle all meet the preset requirements.

[0024] The positioning surface 3 comprises multiple unit surfaces 31, each parallel to the straight pipe sections extending in different directions. Since positioning detection is based on the positioning of multiple straight pipe sections on the pipe fitting, when machining the positioning block, multiple unit positioning surfaces corresponding to the multiple straight pipe sections are first machined. If multiple consecutive completions occur within the same plane, the positioning grooves for the corresponding pipe sections are machined within the same unit surface 31.

[0025] The plurality of unit surfaces 31 are connected in sequence along the connection sequence of the corresponding plurality of straight pipe portions. In the connection direction, there is an intersection line between two adjacent unit surfaces 31, and the plurality of intersection lines are parallel to each other. The complexity of the positioning surface is simplified. Since multi-bend special-shaped pipe fittings may bend in any direction in space, it is more difficult to process the groove. If there is a problem with the groove accuracy, the measurement result will not be of reference value. Therefore, the positioning surface is first used to constrain the general direction of the groove, that is, each bend of the pipe fitting is divided into two directions, one is the continuous bending direction along the multi-unit surface, and the other is the deflection direction within each unit surface. Therefore, when processing the groove, it can be processed in sections, with the straight groove portion in each unit surface being processed first, and then the curved groove portion connecting the straight groove portions being processed to ensure the positioning accuracy of the overall positioning groove, thereby making the detection result of the inspection fixture more reliable.

[0026] Preferably, the positioning groove 4 is a semicircular cross-section groove. The cross-sectional radius of the straight groove portion 41 is consistent with the outer diameter of the tube body. The cross-sectional radius of the curved groove portion 42 is larger than the cross-sectional radius of the straight groove portion 41.

[0027] The straight groove part is used as a reference for positioning and is the reference for installing pipe fittings, so it needs to fit perfectly with the pipe fittings. As for the bent groove part, since the pipe fittings are deformed after processing and the process allows a certain error, the radius can be slightly larger than the original outer diameter of the pipe fittings. Since the copper pipe has strong hardness, the slightly larger groove diameter makes it easier for the bent section to fit into the groove, and also facilitates the removal of the pipe fittings after inspection.

[0028] The fitting sensing module 6 uses a reflective distance measuring sensor, which is embedded in the bottom of the straight groove part 41 and arranged along the radial direction of the groove cross section. By measuring the distance from the pipe placed in the groove to the bottom of the groove, the fitting degree between the pipe and the positioning groove is detected.

[0029] The gap detection module 7 uses a laser sensor, and its laser transmitter and laser receiver are respectively installed on both sides of the straight groove part, arranged along the radial direction of the groove section, and arranged opposite the joint seams of the two pipe ends. After the two pipes are installed in place, if the receiver does not receive the laser signal, the length of the straight pipe section at the end is correct. If the laser signal can be received, it indicates that there is an error in the length of the straight pipe section at the end.

[0030] The straight pipe section where two straight pipe sections are spliced ​​together has the gap detection module 7 installed on the side wall of the slot of the corresponding straight groove section 41. The gap detection module 7 is installed at the splicing seam, and the fit sensing modules 6 are installed on both sides of the gap detection module 7. Preferably, two fit sensing modules are installed in each straight groove section and are spaced apart along the axial direction to improve detection accuracy. The two fit sensing modules in the straight groove section corresponding to the straight pipe at the splicing point are located on both sides of the gap detection module, respectively, to detect the fit between the two spliced ​​straight pipe sections and the straight groove. That is, the three sensors are used to comprehensively judge the various dimensions of the straight pipes at the spliced ​​ends of the two pipe fittings, avoiding misjudgment of results due to coincidence.

[0031] For example, to avoid misjudgment due to the straight pipe on one side being too long, which directly blocks the laser of the laser sensor, if there is a misfit sensing signal on either side or both sides of the fitting sensing module, it can be determined that there is a misjudgment, and combined with visual observation, it can be quickly determined which side of the pipe the problem lies in.

[0032] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A multi-bend special-shaped copper tube fitting detection device, characterized by: It comprises a plurality of positioning blocks (1), wherein the plurality of positioning blocks (1) are fixedly connected to a reference plate (2); The positioning block (1) is provided with a positioning surface (3), a positioning groove (4) is provided on the positioning surface (3), and the positioning groove (4) is fitted with a local pipe section of the pipe to be inspected (5); The local pipe section includes an end pipe section, a pipe section at a bend, and a pipe section at a splice; the positioning groove (4) includes a straight groove portion (41) and a curved groove portion (42); the straight groove portion (41) is fitted with the straight pipe portion of the local pipe section; and the straight groove portion (41) is provided with a fitting sensing module (6) and a gap detection module (7).

2. The multi-bend special-shaped copper tube fitting detection device according to claim 1, characterized in that: The positioning surface (3) includes a plurality of unit surfaces (31), and the plurality of unit surfaces (31) are respectively parallel to the plurality of straight pipe portions extending in different directions; the plurality of unit surfaces (31) are connected in sequence along the connection sequence of the corresponding plurality of straight pipe portions, and in the connection direction, there is an intersection line between two adjacent unit surfaces (31), and the plurality of intersection lines are parallel to each other.

3. The multi-bend special-shaped copper tube fitting detection device according to claim 2, characterized in that: The positioning groove (4) is a groove with a semicircular cross section.

4. The multi-bend special-shaped copper tube fitting detection device according to claim 3, characterized in that: The cross-sectional radius of the straight groove portion (41) is consistent with the outer diameter of the pipe body.

5. The multi-bend special-shaped copper tube fitting detection device according to claim 4, characterized in that: The cross-sectional radius of the curved groove portion (42) is greater than the cross-sectional radius of the straight groove portion (41).

6. The multi-bend special-shaped copper tube fitting detection device according to claim 5, characterized in that: The fitting sensing module (6) is embedded in the bottom of the straight groove portion (41).

7. The multi-bend special-shaped copper tube fitting detection device according to claim 6, characterized in that: The straight pipe section formed by splicing two straight pipe parts has the gap detection module (7) provided on the side wall of the slot of the corresponding straight slot part (41), the gap detection module (7) being provided corresponding to the splicing seam, and the fitting sensing modules (6) being provided on both sides of the gap detection module (7).

Images