Magnetic flux leakage testing probe for gas cylinder outer wall

Abstract

The utility model discloses gas cylinder outer wall magnetic flux leakage detection probe belongs to magnetic flux leakage detection technical field, including connecting rod, the connecting rod lower fixedly connected with the probe body, the probe body is equipped with anti -interference device, the anti -interference device outside symmetry is installed with auxiliary device. In the assembling process, the clamping plate slides in the sleeve shell, the sleeve shell exerts extrusion pressure to the slide plate, so that the slide plate slides along the inclined plane in the sliding slot, when the slide plate passes through the sleeve shell, the return spring exerts the elastic force to it, so that the slide plate resets and is clamped and set in the sleeve shell, is fixed through the clamping pin of vertical board and connecting rod simultaneously, the structure under the working condition, the honeycomb board of protective shell inside installation can weaken the bypass geomagnetic field and the far field interference near the probe, and through the inner wall ripple processing inhibits the edge eddy current, thereby effectively improves the anti -interference performance of probe body, improves the signal -to -noise ratio in the detection process.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic flux leakage detection technology, and in particular relates to a magnetic flux leakage detection probe for the outer wall of a gas storage cylinder. Background Technology

[0002] Currently, the magnetic flux leakage detection probes on the outer wall of gas cylinders generally suffer from insufficient anti-interference performance during use. Because the surface of the gas cylinder is often affected by environmental magnetic fields, geomagnetic fields, and far-field magnetic interference, the signals collected by the probe are prone to noise, resulting in a low signal-to-noise ratio and a decrease in detection sensitivity. In addition, the outer wall of the gas cylinder often has welds, protrusions, and uneven coatings during processing or use. When the probe moves on the outer wall surface, it is easy to cause jumping, resulting in discontinuous scanning paths, which in turn causes fluctuations in the detection curve and poor data continuity and stability.

[0003] Based on this, the present invention designs a magnetic leakage detection probe on the outer wall of a gas storage cylinder to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the current magnetic leakage detection probes on the outer wall of gas cylinders generally have insufficient anti-interference performance during use. Because the surface of the gas cylinder is often affected by the environmental magnetic field, the geomagnetic field and far-field magnetic interference, the signal collected by the probe is prone to noise, the signal-to-noise ratio is low, and the detection sensitivity is reduced. Therefore, the proposed magnetic leakage detection probe for the outer wall of gas cylinders is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A magnetic flux leakage detection probe for the outer wall of a gas storage cylinder includes a connecting rod, a probe body fixedly connected to the connecting rod, an anti-interference device being fitted over the probe body, and auxiliary devices being symmetrically installed over the anti-interference device.

[0007] The anti-interference device includes two protective shells, which are fitted over the probe body. One of the protective shells has a sleeve installed on both its upper and lower surfaces. A retaining plate is slidably connected inside the sleeve, and the retaining plate is fixedly connected to the other retaining plate. A sliding groove is formed inside the retaining plate, and a sliding plate is slidably connected inside the sliding groove. A honeycomb plate is installed inside the protective shell, and both honeycomb plates correspond to the positions of the probe body.

[0008] As a further description of the above technical solution:

[0009] Two telescopic rods are installed inside the slide groove. The telescopic ends of the telescopic rods are fixedly connected to the lower surface of the slide plate. A return spring is provided on the outer sleeve of the telescopic rod. One end of the return spring is fixedly connected to the lower surface of the slide plate, and the other end of the return spring is fixedly connected inside the slide groove.

[0010] As a further description of the above technical solution:

[0011] The upper surface of the protective shell is symmetrically equipped with vertical plates, which overlap the connecting rod. The vertical plates are locked with the connecting rod by locking pins.

[0012] As a further description of the above technical solution:

[0013] The extrusion surface of the slide plate is set as an inclined surface, and the slide plate is locked outside the casing.

[0014] As a further description of the above technical solution:

[0015] The auxiliary device includes a connecting plate, a sliding rod slidably connected inside the connecting plate, a circular plate fixedly connected to one end of the sliding rod, a connecting frame fixedly connected to the other end of the sliding rod, and a roller rotatably connected inside the connecting frame.

[0016] As a further description of the above technical solution:

[0017] The connecting plate is fixedly connected to the outside of the protective shell, and the slide rod is fitted with an auxiliary spring.

[0018] As a further description of the above technical solution:

[0019] One end of the auxiliary spring is fixedly connected inside the circular plate, and the other end of the auxiliary spring is fixedly connected outside the connecting plate.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, by setting two protective shells outside the probe body and adopting a cooperative structure of a locking plate, a sleeve, and a sliding plate, the protective shell can be reliably fitted onto the probe body and the connecting rod. During assembly, the locking plate slides inside the sleeve, and the sleeve applies a squeezing force to the sliding plate, causing the sliding plate to slide along the inclined surface in the groove. After the sliding plate passes the sleeve, the return spring applies a spring force to it, causing the sliding plate to reset and be locked outside the sleeve. At the same time, it is fixed by the pins of the vertical plate and the connecting rod. In the working state, the honeycomb plate installed inside the protective shell can weaken the bypass geomagnetic and far-field interference near the probe, and suppress edge eddy currents through the inner wall ripple treatment, thereby effectively improving the anti-interference performance of the probe body and improving the signal-to-noise ratio during the detection process.

[0022] 2. In this utility model, when the probe body rotates and scans along the outer wall of the gas storage cylinder, the auxiliary spring applies elastic force to the circular plate, so that the slide rod can drive the connecting frame to slide within the connecting plate, thereby ensuring that the roller is always in contact with the outer wall of the gas storage cylinder. When the probe body encounters a weld or small protrusion on the surface during rotation, the roller can smoothly cross the obstacle, avoiding significant jumping of the probe body and maintaining the continuity of the scanning path. Through this structure, the probe body runs more smoothly during detection, the scanning curve is smoother, and the integrity and continuity of the collected data are guaranteed. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the magnetic flux leakage detection probe on the outer wall of the gas storage cylinder proposed in this utility model.

[0024] Figure 2 This is a three-dimensional cross-sectional structural diagram of the magnetic flux leakage detection probe plate for the outer wall of the gas storage cylinder proposed in this utility model.

[0025] Figure 3 The magnetic flux leakage detection probe for the outer wall of the gas storage cylinder proposed in this utility model Figure 1 Enlarged structural diagram of section A;

[0026] Figure 4 This is a three-dimensional structural diagram of the auxiliary device for detecting magnetic flux leakage on the outer wall of a gas storage cylinder proposed in this utility model.

[0027] Legend:

[0028] 1. Connecting rod; 2. Probe body; 3. Anti-interference device; 301. Protective shell; 302. Cover; 303. Clamping plate; 304. Slide groove; 305. Slide plate; 306. Telescopic rod; 307. Pull-back spring; 308. Honeycomb panel; 309. Vertical plate; 310. Locking pin; 4. Auxiliary device; 401. Connecting plate; 402. Slide rod; 403. Circular plate; 404. Connecting frame; 405. Roller; 406. Auxiliary spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4 ,

[0031] First embodiment:

[0032] This utility model provides a technical solution: a magnetic leakage detection probe for the outer wall of a gas storage cylinder, including a connecting rod 1, a probe body 2 fixedly connected to the bottom of the connecting rod 1, an anti-interference device 3 being sleeved on the probe body 2, and auxiliary devices 4 being symmetrically installed on the outside of the anti-interference device 3.

[0033] The anti-interference device 3 includes two protective shells 301, which are fitted over the probe body 2. One of the protective shells 301 has a sleeve 302 installed on both its upper and lower surfaces. A retaining plate 303 is slidably connected inside the sleeve 302, and the retaining plate 303 is fixedly connected to the other sleeve. A sliding groove 304 is formed inside the retaining plate 303, and a sliding plate 305 is slidably connected inside the sliding groove 304. A honeycomb plate 308 is installed inside the protective shell 301, and both honeycomb plates 308 correspond to the positions of the probe body 2. The pressing surface of the sliding plate 305 is set as an inclined surface, which allows it to be continuously pressed by the sleeve 302 when in contact with it, thus achieving smooth sliding within the sliding groove 304. Through this structural cooperation, the sliding plate 305 can achieve smooth entry and exit within a limited space, avoiding jamming. At the same time, the inclined surface design also makes the force on the sliding plate 305 more uniform during reset, improving the stability of the structure.

[0034] Specifically, such as Figures 2-3 As shown, two telescopic rods 306 are installed inside the slide groove 304. The telescopic ends of the telescopic rods 306 are fixedly connected to the lower surface of the slide plate 305. A return spring 307 is fitted over the telescopic rods 306. One end of the return spring 307 is fixedly connected to the lower surface of the slide plate 305, and the other end is fixedly connected to the slide groove 304. The slide groove 304 provides a fixing point for the return spring 307, so that the return spring 307 can be compressed and stored when the slide plate 305 moves. After the slide plate 305 passes the housing 302, the elastic force is released to push it back to its original position. Through the cooperation of the slide groove 304 and the return spring 307, the slide plate 305 can be automatically reset after each working cycle, reducing manual intervention and improving the automation and reliability of the probe.

[0035] Vertical plates 309 are symmetrically installed on the upper surface of the protective shell 301. The vertical plates 309 overlap the connecting rod 1. The vertical plates 309 and the connecting rod 1 are locked with locking pins 310. The pressing surface of the sliding plate 305 is set as an inclined surface, and the sliding plate 305 is locked outside the shell 302. The vertical plates 309 overlap the connecting rod 1 and are locked with the connecting rod 1 by locking pins 310. During operation, it can effectively prevent the protective shell 301 from loosening or rotating relative to the connecting rod 1. Through the cooperation of the vertical plates 309 and locking pins 310, the relative position of the protective shell 301 and the probe body 2 is kept stable, thereby ensuring that the honeycomb plate 308 and the probe body 2 always remain aligned, and improving the consistency of the anti-interference effect.

[0036] During operation, two protective shells 301 are installed outside the probe body 2, and a cooperative structure consisting of a clamping plate 303, a sleeve 302, and a sliding plate 305 is adopted. This allows the protective shell 301 to be reliably fitted onto the probe body 2 and the connecting rod 1. During assembly, the clamping plate 303 slides inside the sleeve 302, and the sleeve 302 applies a squeezing force to the sliding plate 305, causing the sliding plate 305 to slide along the inclined surface in the groove 304. After the sliding plate 305 passes the sleeve 302, the pull spring 307 applies a spring force to it, causing the sliding plate 305 to reset and be locked outside the sleeve 302. At the same time, it is fixed by the pin 310 of the connecting rod 1 through the vertical plate 309. In the working state, the honeycomb plate 308 installed inside the protective shell 301 can weaken the bypass geomagnetic and far-field interference near the probe body 2, and suppress edge eddy currents through the inner wall ripple treatment, thereby effectively improving the anti-interference performance of the probe body 2 and improving the signal-to-noise ratio during the detection process.

[0037] Second embodiment:

[0038] Specifically, such as Figure 4 As shown, the auxiliary device 4 includes a connecting plate 401, a sliding rod 402 slidably connected inside the connecting plate 401, a circular plate 403 fixedly connected to one end of the sliding rod 402, a connecting frame 404 fixedly connected to the other end of the sliding rod 402, a roller 405 rotatably connected inside the connecting frame 404, the connecting plate 401 fixedly connected to the outside of the protective shell 301, and an auxiliary spring 406 sleeved on the sliding rod 402. One end of the auxiliary spring 406 is fixedly connected inside the circular plate 403, and the other end of the auxiliary spring 406 is fixedly connected to the outside of the connecting plate 401. When the sliding plate 305 moves under the pressure of the shell 302, the return spring 307 is stretched synchronously and stores energy. When the shell 302 releases the pressure, the return spring 307 can immediately apply a restoring force to the sliding plate 305, causing the sliding plate 305 to quickly return to its initial position. Through the cooperation of the sliding plate 305 and the return spring 307, the automatic reset function of the structure can be realized, ensuring that the probe is always in an ideal state during continuous operation.

[0039] During operation, as the probe body 2 rotates and scans along the outer wall of the gas cylinder, the auxiliary spring 406 applies elastic force to the circular plate 403, allowing the slide rod 402 to drive the connecting frame 404 to slide within the connecting plate 401. This ensures that the roller 405 remains in contact with the outer wall of the gas cylinder. When the probe body 2 encounters welds or small protrusions on the surface during rotation, the roller 405 can smoothly overcome the obstacles, preventing significant jumping of the probe body 2 and maintaining the continuity of the scanning path. Through this structure, the probe body 2 operates more smoothly during detection, the scanning curve is smoother, and the integrity and continuity of the collected data are guaranteed.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas cylinder outer wall magnetic flux leakage detection probe comprising a connecting rod (1), characterized in that, The probe body (2) is fixedly connected to the lower part of the connecting rod (1). The probe body (2) is covered with an anti-interference device (3). An auxiliary device (4) is symmetrically installed on the outside of the anti-interference device (3). The anti-interference device (3) includes two protective shells (301), which are fitted over the probe body (2). One of the protective shells (301) has a cover (302) installed on both its upper and lower surfaces. A retaining plate (303) is slidably connected inside the cover (302), and the retaining plate (303) is fixedly connected to the other retaining shell. A sliding groove (304) is provided inside the retaining plate (303), and a sliding plate (305) is slidably connected inside the sliding groove (304). A honeycomb plate (308) is installed inside the protective shell (301), and both honeycomb plates (308) are positioned corresponding to the probe body (2).

2. The gas cylinder outer wall magnetic flux leakage detection probe according to claim 1, characterized in that, Two telescopic rods (306) are installed in the slide groove (304). The telescopic ends of the telescopic rods (306) are fixedly connected to the lower surface of the slide plate (305). A return spring (307) is provided on the outer sleeve of the telescopic rods (306). One end of the return spring (307) is fixedly connected to the lower surface of the slide plate (305), and the other end of the return spring (307) is fixedly connected to the slide groove (304).

3. The gas cylinder outer wall magnetic flux leakage detection probe according to claim 1, characterized in that, The upper surface of the protective shell (301) is symmetrically equipped with vertical plates (309), which overlap the connecting rod (1). The vertical plates (309) are fitted with locking pins (310) inside the connecting rod (1).

4. The gas cylinder outer wall magnetic flux leakage inspection probe according to claim 1, characterized in that, The extrusion surface of the slide plate (305) is set as an inclined surface, and the slide plate (305) is locked outside the casing (302).

5. The gas cylinder outer wall magnetic flux leakage inspection probe according to claim 1, characterized in that, The auxiliary device (4) includes a connecting plate (401), a sliding rod (402) is slidably connected in the connecting plate (401), a circular plate (403) is fixedly connected to one end of the sliding rod (402), a connecting frame (404) is fixedly connected to the other end of the sliding rod (402), and a roller (405) is rotatably connected in the connecting frame (404).

6. The gas cylinder outer wall magnetic flux leakage inspection probe according to claim 5, characterized in that, The connecting plate (401) is fixedly connected to the outside of the protective shell (301), and the slide rod (402) is covered with an auxiliary spring (406).

7. The gas cylinder outer wall magnetic flux leakage inspection probe according to claim 6, characterized in that, One end of the auxiliary spring (406) is fixedly connected inside the circular plate (403), and the other end of the auxiliary spring (406) is fixedly connected outside the connecting plate (401).

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