Pulsed eddy current probe detection auxiliary device
By designing the guide rail and probe clamping assembly, and combining it with a distance calibration ruler and a step encoder, the problems of unstable fixation and inaccurate positioning of the pulse eddy current probe in the inspection of pipes with insulation layers were solved, and stable detection in high-temperature environments was achieved.
Patent Information
- Application Number
- CN202423285474.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing pulsed eddy current probe auxiliary devices are unstable when inspecting pipes with insulation layers, resulting in inaccurate measurements and an inability to accurately locate the detection signal. Furthermore, existing devices have poor heat resistance in high-temperature environments and are inconvenient to operate.
An auxiliary device for pulse eddy current probe detection, comprising a guide rail, a slider, and a probe clamping assembly, was designed. The device is mounted on a pipeline using a guide rail fixer and combines a distance calibration ruler and a step encoder to achieve stable clamping and position calibration of the probe. Non-conductive, high-heat-resistant materials are used to adapt to complex environments.
It achieves stable clamping and accurate positioning of the pulsed eddy current probe in complex environments, improving the stability and efficiency of detection, and is suitable for the detection of pipelines with insulation layers and high temperature.
Smart Images
Figure CN223870602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulsed eddy current detection technology, and in particular to an auxiliary device for pulsed eddy current probe detection. Background Technology
[0002] Pulsed eddy current testing is a novel non-destructive testing technique that eliminates the need for direct probe contact with the test surface and removes the pipe's insulation layer, thus meeting the requirements for online pipe inspection. However, when inspecting pipes with insulation layers, inaccurate measurements can still occur due to probe instability at the overlap of the outer metal protective layer. Therefore, it is necessary to install auxiliary testing devices on the pipe under test to address these issues.
[0003] Currently, existing solutions typically involve wrapping the pipe with a rigid plastic layer over its insulation layer. The probe moves across this rigid plastic layer for detection, and specific detection paths and dimensions are usually drawn on the plastic layer to facilitate the location of abnormal signals. However, these auxiliary devices are generally bulky and inconvenient to operate in the field. Furthermore, rigid plastics generally have poor high-temperature resistance, making them unsuitable for high-temperature pipe inspections. In addition, existing pulsed eddy current probe auxiliary devices do not consider the impact of the pipe surface condition on the probe when inspecting pipes with insulation, resulting in unstable probe clamping and inaccurate location of the detection signal.
[0004] Therefore, a new type of pulsed eddy current probe auxiliary device still needs to be developed to achieve stable clamping of the detection probe and accurate calibration of position information. Utility Model Content
[0005] The purpose of this invention is to provide an auxiliary device for pulse eddy current probe detection in order to achieve stable clamping of the pulse eddy current probe and accurate calibration of its position information, thereby meeting the pulse eddy current detection requirements of pipelines with insulation layers.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A pulsed eddy current probe detection auxiliary device includes a guide rail, a slider slidably disposed on the guide rail, and a probe clamping assembly mounted on the slider for fixing the pulsed eddy current probe.
[0008] The guide rail includes a guide rail bracket and a guide rail fastener connected to the guide rail bracket. The guide rail bracket can be installed on the pipe to be tested through the guide rail fastener.
[0009] The guide rail bracket is provided with a distance calibration scale along its length, and the slider is connected to a step encoder.
[0010] Furthermore, the guide rail bracket includes a slide rail base and a linear rail disposed on the slide rail base, with a distance calibration ruler disposed on the side wall of the linear rail.
[0011] Furthermore, the cross-section of the guide rail bracket is generally I-shaped, and a limiting groove is formed between the slide rail base and the linear rail for limiting the sliding of the slider.
[0012] Furthermore, the guide rail retainer is connected to the guide rail bracket by bolts.
[0013] Furthermore, the slider includes a slider base that is slidably mounted on a guide rail and a probe placement block mounted on the slider base.
[0014] Furthermore, the probe placement block includes a placement plate and a pair of side plates disposed on the placement plate, and the probe clamping assembly is disposed between the side plates.
[0015] Furthermore, the probe clamping assembly includes probe fixing plates that are slidably disposed between the side plates, and the probe fixing plates are connected to the corresponding side plates by springs, and the pulsed eddy current probe is clamped between the probe fixing plates.
[0016] Furthermore, the probe placement block has a sliding groove on its placement plate for the probe fixing plate to slide.
[0017] Furthermore, the rotating shaft of the pedometer encoder is placed inside a cylindrical rotating block, which is placed on a guide rail and connected to the slider via a connecting rod.
[0018] Furthermore, the pedometer encoder can be connected to the pulse eddy current probe via a data cable or wirelessly.
[0019] Furthermore, when performing point-by-point pulsed eddy current detection, the step encoder is not connected to the pulsed eddy current probe; when performing continuous pulsed eddy current detection, the step encoder is connected to the pulsed eddy current probe and used to synchronize position information.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] (1) The flow probe detection auxiliary device of this utility model can install the guide rail on the surface of the pipe to be tested, clamp and fix the pulse eddy current probe on the slider through the probe clamping assembly, and calibrate the detection position through the distance calibration ruler or step encoder during pulse eddy current detection, thereby realizing stable clamping of the pulse eddy current detection probe and accurate calibration of position information.
[0022] (2) When performing point-by-point detection, the pulse eddy current probe detection auxiliary device of this utility model can use the distance calibration ruler on the guide rail to calibrate the detection position; when performing continuous detection, the step counting encoding device can be used to simultaneously detect the signal and position information.
[0023] (3) The auxiliary device for pulse eddy current probe detection of this utility model utilizes the non-conductive, high heat resistance and robust stability of the device material, so that the auxiliary pulse eddy current detection probe can be used in complex environments such as poor surface condition of pipe insulation layer and high temperature. It can be applied to pulse eddy current detection of pressure vessels and pipes with and without insulation layer, thereby improving the stability and detection efficiency of the detection probe.
[0024] (4) The guide rail, slider, probe clamping assembly, step encoder and detection probe of this utility model are all modular components that are easy to disassemble, making it convenient to adjust and replace them according to different detection environments. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of the pulsed eddy current probe detection auxiliary device of this utility model.
[0026] Explanation of markings in the diagram:
[0027] 1-Guide rail, 11-Guide rail bracket, 111-Slide rail base, 112-Linear rail, 12-Guide rail retainer;
[0028] 2-Slider, 21-Slider base, 22-Probe placement block, 221-Placement plate, 222-Side plate;
[0029] 3-Probe clamping assembly, 31-Probe fixing plate, 32-Spring;
[0030] 4-Distance calibration ruler;
[0031] 5-Pedometer encoder;
[0032] 6-Cylindrical rotating block;
[0033] 7-Connecting rod. Detailed Implementation
[0034] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.
[0035] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0037] Example 1:
[0038] A pulsed eddy current probe detection auxiliary device, such as Figure 1 As shown, it includes a guide rail 1, a slider 2 slidably disposed on the guide rail 1, and a probe clamping assembly 3 mounted on the slider 2 for fixing the pulse eddy current probe.
[0039] In this embodiment, the guide rail 1 includes a guide rail bracket 11 and a guide rail fixture 12 connected to the guide rail bracket 11. The guide rail bracket 11 can be installed on the pipe to be tested via the guide rail fixture 12. A distance calibration ruler 4 is provided on the guide rail bracket 11 along its length direction, which is used to calibrate the detection position during pulsed eddy current point-by-point detection. The slider 2 is connected to a step encoder 5, which is used to synchronously detect position information through conventional wireless or data cable connections during continuous pulsed eddy current detection.
[0040] In this embodiment, the guide rail 1 can be mounted on the surface of the pipe to be tested via the guide rail holder 12, and the pulse eddy current probe is clamped and fixed on the slider via the probe clamping assembly 3. The pulse eddy current probe can detect the pipe through a non-conductive insulation layer of a certain thickness. When performing point-by-point pulse eddy current detection, the detection position can be calibrated using the distance calibration ruler 4 on the guide rail 1; when performing continuous pulse eddy current detection, the step encoder 5 can be used to simultaneously detect the signal and position information.
[0041] Example 2:
[0042] A pulsed eddy current probe detection auxiliary device includes a guide rail 1, a slider 2 slidably disposed on the guide rail 1, and a probe clamping assembly 3 mounted on the slider 2 for fixing the pulsed eddy current probe.
[0043] The guide rail 1 in this embodiment includes a guide rail bracket 11 and a guide rail retainer 12 connected to the guide rail bracket 11. The guide rail bracket 11 can be installed on the pipe to be tested through the guide rail retainer 12. The guide rail bracket 11 includes a slide rail base 111 and a linear rail 112 disposed on the slide rail base 111. The cross-section of the guide rail bracket 11 is generally I-shaped. A limiting groove is formed between the slide rail base 111 and the linear rail 112 for limiting the sliding of the slider 2, so that the slider 2 can move flexibly back and forth along the guide rail bracket 11. A distance calibration scale 4 is provided on the guide rail bracket 11 along its length direction, and the distance calibration scale 4 is disposed on the side wall of the linear rail 112.
[0044] The guide rail bracket 11 in this embodiment is 1.0-1.5m long and 1-3cm thick, and is stable, reliable, and not easily deformed. The guide rail fixer 12 in this embodiment is connected to the guide rail bracket 11 by bolts, and the guide rail fixer 12 can be positioned and connected to the pipe to be tested using common tools such as positioning pins and suction cups.
[0045] The slider 2 includes a slider base 21 slidably mounted on the guide rail 1 and a probe placement block 22 mounted on the slider base 21. The slider base 21 is connected to a pedometer encoder 5. In this embodiment, the probe placement block 22 includes a placement plate 221 and a pair of side plates 222 mounted on the placement plate 221. The side plates 222 are arranged in parallel and symmetrically along the axis of the guide rail 1. The probe clamping assembly 3 is located between the side plates 222 and specifically includes probe fixing pieces 31 slidably mounted between the side plates 222. The probe fixing pieces 31 are connected to the corresponding side plates 222 by springs 32, and the pulse eddy current probe is clamped between the probe fixing pieces 31. The placement plate 221 of the probe placement block 22 has a sliding groove for the probe fixing pieces 31 to slide.
[0046] In this embodiment, the guide rail bracket 11, guide rail fixer 12, slider base 21, and probe placement block 22 can all be made of non-metallic materials such as carbon fiber or high-temperature resistant plastic, which makes the pulse eddy current probe detection auxiliary device of this embodiment non-conductive, high heat resistance, and robust and stable, and can assist the pulse eddy current probe in complex environments such as poor surface condition of pipe insulation layer and high temperature.
[0047] Example 3:
[0048] This embodiment provides an auxiliary device for pulsed eddy current probe detection, including a guide rail 1, a slider 2 slidably disposed on the guide rail 1, and a probe clamping assembly 3 mounted on the slider 2 for fixing the pulsed eddy current probe.
[0049] The difference from Embodiment 2 is that in this embodiment, the rotating shaft of the pedometer encoder 5 (such as an AFM60 absolute encoder) is placed inside the cylindrical rotating block 6. The cylindrical rotating block 6 is placed on the guide rail 1 and is fixedly connected to the slider 2 via a connecting rod 7. The data cable of the pedometer encoder 5 in this embodiment can be connected to a pulse eddy current probe.
[0050] When performing point-by-point pulsed eddy current detection, the slider 2 carrying the pulsed eddy current probe on the guide rail performs detection at planned intervals. The detection position is calibrated using the distance calibration ruler 4. In this case, the detection probe does not need to be connected to the step encoder 5. When performing continuous pulsed eddy current detection, the step encoder 5 is placed on one side of the guide rail 1, and the pulsed eddy current probe is connected to the step encoder 5 to synchronize position information. Detection is performed by sliding the slider 2 on the guide rail 1. The distance calibration ruler 4 can help determine the position information of the detection signal.
[0051] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.
Claims
1. An auxiliary device for pulsed eddy current probe detection, characterized in that, It includes a guide rail (1), a slider (2) slidably disposed on the guide rail (1), and a probe clamping assembly (3) mounted on the slider (2) for fixing the pulse eddy current probe; The guide rail (1) includes a guide rail bracket (11) and a guide rail fixer (12) connected to the guide rail bracket (11). The guide rail bracket (11) can be installed on the pipe to be tested through the guide rail fixer (12). The guide rail bracket (11) is provided with a distance calibration ruler (4) along its length direction, and the slider (2) is connected to a step encoder (5).
2. The pulsed eddy current probe detection auxiliary device according to claim 1, characterized in that, The guide rail bracket (11) includes a slide rail base (111) and a linear rail (112) disposed on the slide rail base (111), and a distance calibration ruler (4) is disposed on the side wall of the linear rail (112).
3. The pulsed eddy current probe detection auxiliary device according to claim 2, characterized in that, The cross-section of the guide rail bracket (11) is I-shaped, and a limiting groove is formed between the slide rail base (111) and the linear rail (112) for limiting the sliding of the slider (2).
4. The pulsed eddy current probe detection auxiliary device according to claim 1, characterized in that, The guide rail fixer (12) is connected to the guide rail bracket (11) by bolts.
5. The pulsed eddy current probe detection auxiliary device according to claim 1, characterized in that, The slider (2) includes a slider base (21) slidably mounted on the guide rail (1) and a probe placement block (22) mounted on the slider base (21); The probe placement block (22) includes a placement plate (221) and a pair of side plates (222) disposed on the placement plate (221), and the probe clamping assembly (3) is disposed between the side plates (222).
6. The pulsed eddy current probe detection auxiliary device according to claim 5, characterized in that, The probe clamping assembly (3) includes probe fixing pieces (31) that are slidably disposed between the side plates (222). The probe fixing pieces (31) and the corresponding side plates (222) are connected by springs (32). The pulse eddy current probe is clamped between the probe fixing pieces (31).
7. The pulsed eddy current probe detection auxiliary device according to claim 6, characterized in that, The probe placement block (22) has a sliding groove on its placement plate (221) for the probe fixing piece (31) to slide.
8. The pulsed eddy current probe detection auxiliary device according to claim 1, characterized in that, The rotating shaft of the step encoder (5) is placed inside the cylindrical rotating block (6), which is placed on the guide rail (1) and connected to the slider (2) by a connecting rod (7).
9. The pulsed eddy current probe detection auxiliary device according to claim 1, characterized in that, The step encoder (5) can be connected to the pulse eddy current probe via a data cable or wirelessly.
10. The pulsed eddy current probe detection auxiliary device according to claim 9, characterized in that, When performing pulsed eddy current point-by-point detection, the step encoder (5) is not connected to the pulsed eddy current probe; When performing continuous pulse eddy current detection, the step encoder (5) is connected to the pulse eddy current probe and used to synchronize position information.