Corrugated pipe broken hole detection device

Abstract

The utility model discloses a corrugated pipe broken hole detection device. The corrugated pipe broken hole detection device comprises at least two groups of detection frames arranged in a corrugated pipe, and two adjacent groups of detection frame supports are connected through a central rod; the detection frame comprises a central disc, at least two telescopic rods are arranged on the central disc, telescopic probes are arranged on the telescopic rods, and probe heads at the end parts of the probes are kept in contact with the inner wall of the corrugated pipe; a thread is arranged on the central rod; the center disc is provided with an installation hole used for the center rod to penetrate through and in threaded connection with the center rod. According to the corrugated pipe broken hole detection device provided by the utility model, the detection effect on the hole in the inner wall of the corrugated pipe is realized through the rotating probe arranged on the inner wall of the corrugated pipe.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe testing technology, and in particular to a device for detecting holes in corrugated pipes. Background Technology

[0002] A corrugated pipe is a tubular elastic sensing element with a folded, corrugated structure, capable of connecting along the direction of folding and expansion. It is mainly divided into two categories: metal corrugated pipes and non-metal corrugated pipes, and materials include stainless steel, copper, aluminum, rubber, and plastics. Due to its unique structure, this type of pipe possesses excellent flexibility and adaptability, allowing for easy installation in complex spatial layouts.

[0003] A bellows testing device is disclosed, comprising a testing body and a testing rod. The testing rod extends downward through the testing body and is connected to a hexagonal nut. A testing pad is also provided between the hexagonal nut and the testing body. A bellows is fitted onto the testing rod. A first O-ring is provided between the upper end of the bellows and the testing rod. The lower end of the bellows extends into the testing body and is sealed by a sealing gasket, forming a sealed cavity between the testing rod and the bellows. A threaded air inlet is also provided on the testing body, and the threaded air inlet is connected to the cavity.

[0004] The aforementioned device measures bellows based on the principle of sealing, but this device requires a good seal at the interface; otherwise, it will lead to deviations in the measurement results.

[0005] Therefore, it is necessary to provide a corrugated pipe hole detection device to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a corrugated pipe hole detection device that can use a mechanical probe to measure whether the corrugated pipe has holes.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A corrugated pipe hole detection device includes: a detection frame placed inside the corrugated pipe, wherein there are at least two sets of the detection frame, and adjacent sets of the detection frame are connected by a central rod;

[0009] The testing frame includes a central disk with at least two telescopic rods. Each telescopic rod has a retractable probe, and the probe tip keeps in contact with the inner wall of the bellows.

[0010] The central rod is threaded;

[0011] The central plate is provided with mounting holes for the central rod to pass through and be threadedly connected thereto.

[0012] Preferably, a limiting piece is fixedly installed on the probe of one of the detection frames, and each probe on the other detection frames is located in a different plane.

[0013] Preferably, the telescopic rod is provided with a base, and a mounting seat is slidably installed in the base. The probe is detachably mounted on the mounting seat, and a spring is provided between the probe and the base.

[0014] Preferably, the telescopic rod consists of two relatively sliding sleeves, with a fixing knob installed on the outer wall of the sleeve.

[0015] Preferably, the central disc is detachably connected to the telescopic rod.

[0016] Preferably, the probe tip is hemispherical.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This utility model achieves the detection effect of holes in the inner wall of the bellows by using a probe that rotates inside the bellows.

[0019] (2) By setting probes located in different planes, this utility model makes it easier to detect at different positions in the recesses of the inner wall of the bellows, resulting in a larger detection range and more accurate results.

[0020] (3) This utility model achieves the effect of changing the size of the device by setting an adjustable telescopic rod, thereby enabling the device to be used with corrugated pipes of different specifications. Attached Figure Description

[0021] Figure 1 A schematic diagram of the corrugated pipe hole detection device provided by this utility model;

[0022] Figure 2 A schematic diagram of the structure of the detection frame of the corrugated pipe hole detection device provided by this utility model;

[0023] Figure 3 Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the second embodiment of the corrugated pipe hole detection device provided by this utility model.

[0025] The corresponding names of the reference numerals in the attached drawings are as follows: 10, detection frame; 11, center plate; 111, mounting hole; 12, telescopic rod; 121, fixing knob; 13, mounting base; 14, probe; 15, probe; 16, spring; 17, base; 18, limiting piece; 20, center rod. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0027] There are many types of corrugated pipes. Based on the number of layers, they can be divided into single-layer corrugated pipes and double-layer corrugated pipes. Double-layer corrugated pipes are based on single-layer corrugated pipes, with an additional cylindrical inner lining layer inside. This device is designed for the inspection of single-layer corrugated pipes. The outer wall of the corrugated pipe has wrinkles. The inventor discovered that the protruding parts are more prone to damage when in contact with the outside. The outer wall protrudes while the inner wall is concave. Based on this structure, a device can be made to detect whether there are holes in the protruding parts of the outer wall.

[0028] First embodiment:

[0029] like Figure 1-4 As shown, the bellows hole detection device provided by this utility model includes: a detection frame 10 placed inside the bellows, the shape of which is as follows. Figure 2 As shown, the overall shape is cross-shaped. There are two sets of test frames 10. The two sets of test frame 10 are connected by a central rod 20. The specific connection method is described below. At the same time, the connection of the central rod 20 allows the two test frames 10 to remain stable inside the corrugated pipe.

[0030] The testing frame 10 includes a central disc 11, which is cylindrical. Four screw holes for mounting telescopic rods 12 are formed in four directions on the outer wall of the central disc 11. The ends of the telescopic rods 12 are provided with threads that fit the screw holes. The telescopic rods 12 are cylindrical and hollow inside. Figure 2-3 Taking the telescopic rod 12 shown as an example, a circular base 17 with the same inner diameter as the telescopic rod 12 is fixedly installed on its inner wall near the upper end. A spring 16 is vertically fixed to the upper end of the base 17, and the upper end of the spring 16 is fixed to the mounting base 13. At the same time, the upper end of the telescopic rod 12 is sleeved on the outer periphery of the mounting base 13, and the two are slidably connected. The shape of the mounting base 13 is as shown. Figure 3 As shown, a screw hole for mounting the probe 14 is also provided on the upper end of the mounting base 13. The upper end of the probe 14 contacts the inner wall of the bellows, and the spring 16 is in a compressed state.

[0031] On the other hand, a mounting hole 111 is provided in the center of the center plate 11 for the center rod 20 to pass through and be threadedly connected to it. The mounting hole 111 is a threaded hole that passes through the center plate 11, thereby realizing the connection and fixation of two adjacent center plates 11.

[0032] Rotating the central rod 20 causes the detection frame 10 located inside the bellows to rotate. The probe 15 at the end of the probe 14 on the detection frame 10 is hemispherical and always in contact with the inner wall of the bellows. As the probe 15 slides along the inner wall of the bellows, if there is a hole in the outer wall of the bellows, after the probe 15 enters the hole, the spring 16 at the lower end of the probe 14 will push the probe 14 outward, so that it passes through the hole and gets stuck inside, thereby achieving the detection effect of the hole in the inner wall of the bellows. When the bellows is long, a central rod 20 of correspondingly larger length is used. Pulling the central rod 20 outward from the bellows can drive the detection frame 10 from one recessed part of the bellows wall to another recessed part, so that the detection frame 10 moves along the axial direction of the bellows.

[0033] The detection of holes in the inner wall of the bellows is achieved by using a probe 14 that rotates inside the bellows.

[0034] Second embodiment:

[0035] like Figure 4 As shown, this embodiment differs from the device in the first embodiment in two ways. First, an arc-shaped limiting piece 18 adapted to the recessed portion of the inner wall of the bellows is welded and fixed to the probe 15 of one detection frame 10. The outer wall of the limiting piece 18 is smooth and can fit into the recessed portion of the inner wall of the bellows. Second, the screw holes on the central plate 11 of the other detection frame 10 are not in the same plane. Correspondingly, the telescopic rod 12 and the probe 15 installed in the screw holes are not in the same plane. Therefore, when the limiting piece 18 is located in the recessed portion of the inner wall of the bellows, the probe 15 is located in a different plane position of the other inner wall recess of the bellows. The rest of the structure is the same as in the first embodiment, and the operation method is also the same.

[0036] By setting probes 15 located in different planes, the device can perform detection at different positions in the recesses of the inner wall of the bellows, resulting in a larger detection range and more accurate results.

[0037] Third embodiment:

[0038] like Figure 2 As shown, the telescopic rod 12 consists of two sleeves that can slide relative to each other. The outer wall of the sleeve has a threaded hole, and a fixing knob 121 is threaded into the threaded hole. The fixing knob 121 includes a cylindrical handwheel and a threaded rod welded to it. The threaded rod is located in the threaded hole. After rotating the fixing knob 121, the end of the threaded rod presses against the other sleeve located inside the sleeve, thereby fixing the positions of the two sleeves.

[0039] The device size can be changed by setting an adjustable telescopic rod 12, thereby making the device suitable for corrugated pipes of different specifications.

[0040] Working principle: Rotating the central rod 20 causes the detection frame 10 located inside the bellows to rotate. The probe 15 at the end of the probe 14 on the detection frame 10 is hemispherical and always in contact with the inner wall of the bellows. As the probe 15 slides along the inner wall of the bellows, if there is a hole in the outer wall of the bellows, after the probe 15 enters the hole, the spring 16 at the lower end of the probe 14 will push the probe 14 outward, so that it passes through the hole and gets stuck inside, thereby achieving the detection effect of the hole in the inner wall of the bellows.

[0041] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for detecting holes in corrugated pipes, characterized in that, include: The test frame (10) is placed inside the bellows. There are at least two sets of the test frame (10), and the supports of two adjacent sets of the test frame (10) are connected by a central rod (20). The testing frame (10) includes a central disk (11), on which at least two telescopic rods (12) are provided, and on which telescopic rods (12) are retractable probes (14), and the probe (15) at the end of the probe (14) is in contact with the inner wall of the bellows. The central rod (20) is threaded; The central disk (11) is provided with mounting holes (111) for the central rod (20) to pass through and be threadedly connected thereto.

2. The corrugated pipe hole detection device according to claim 1, characterized in that, A limiting piece (18) is fixedly installed on the probe (14) of one of the test frames (10), and each probe (14) on the other test frames (10) is located in a different plane.

3. The corrugated pipe hole detection device according to claim 1 or 2, characterized in that, The telescopic rod (12) is provided with a base (17), and a mounting seat (13) is slidably installed in the base (17). The probe (14) is detachably mounted on the mounting seat (13), and a spring (16) is provided between the probe (14) and the base (17).

4. The corrugated pipe hole detection device according to claim 3, characterized in that, The telescopic rod (12) consists of two relatively sliding sleeves, and a fixing knob (121) is installed on the outer wall of the sleeve.

5. The corrugated pipe hole detection device according to claim 4, characterized in that, The central disc (11) is detachably connected to the telescopic rod (12).

6. The corrugated pipe hole detection device according to claim 5, characterized in that, The probe (15) at the end of the probe (14) is hemispherical.

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