阅读说明：本技术 一种一体化管道变形内检测复合探头 (Integrated composite probe for detecting deformation of pipeline ) 是由 李晓龙 陈金忠 孟涛 马义来 辛佳兴 国滨 祝兴辉 张洋 孟祥吉 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种一体化管道变形内检测复合探头,包括脉冲涡流检测模块和磁旋转编码检测模块,其特征在于：所述脉冲涡流检测模块的上部设有脉冲涡流变形传感器,且脉冲涡流变形传感器的下部连接有涡流检测单元壳体,所述脉冲涡流变形传感器的上部设有复合磁场检测单元,所述磁旋转编码检测模块的上部设有磁旋转编码检测单元保护壳,所述磁旋转编码检测单元保护壳内部设有磁旋转结构,所述磁旋转结构一端部安装有径向磁铁,所述磁旋转编码检测单元保护壳内侧设有霍尔芯片,本发明在探头保护壳的上增加两个对称分布的磁性检测元件,基于脉冲涡流检测的原理增加管道检测的周向精度,实现管道变形轮廓的三维重构,并提高检测精度。(The invention discloses an integrated composite probe for detecting pipeline deformation, which comprises a pulse eddy current detection module and a magnetic rotation coding detection module, and is characterized in that: the invention provides a pipeline detection device, which is characterized in that a pulse eddy current deformation sensor is arranged on the upper part of a pulse eddy current detection module, the lower part of the pulse eddy current deformation sensor is connected with an eddy current detection unit shell, a composite magnetic field detection unit is arranged on the upper part of the pulse eddy current deformation sensor, a magnetic rotation coding detection unit protective shell is arranged on the upper part of the magnetic rotation coding detection module, a magnetic rotation structure is arranged in the magnetic rotation coding detection unit protective shell, a radial magnet is arranged at one end of the magnetic rotation structure, and a Hall chip is arranged on the inner side of the magnetic rotation coding detection unit protective shell.)

1. The utility model provides an integration pipeline warp interior detection composite probe, includes pulse eddy current testing module and magnetic rotation coding detection module, its characterized in that: the upper portion of the pulse eddy current detection module is provided with a pulse eddy current deformation sensor (1), the lower portion of the pulse eddy current deformation sensor (1) is connected with an eddy current detection unit shell (2), the upper portion of the pulse eddy current deformation sensor (1) is provided with a composite magnetic field detection unit (7), one end of the eddy current detection unit shell (2) is fixedly connected with a connecting frame (8), the other end of the connecting frame (8) is connected with a clamping mechanism (3), the lower side of the clamping mechanism (3) is connected with a four-bar mechanism (4), the upper portion of the magnetic rotation coding detection module is provided with a magnetic rotation coding detection unit protective shell (11), a magnetic rotation structure (10) is arranged inside the magnetic rotation coding detection unit protective shell (11), one end portion of the magnetic rotation structure (10) is provided with a radial magnet (9), and the inner side of the magnetic rotation coding detection unit protective shell (11) is provided with, the lower part of the magnetic rotation coding detection unit protective shell (11) is connected with the base (6).

2. The integrated composite probe for detecting deformation in a pipeline according to claim 1, wherein: the pulse eddy current deformation sensor (1) is composed of a TMR2503 magnetic flux tunnel type chip, an amplifying circuit and a filter circuit, and the lower portion of the pulse eddy current deformation sensor (1) is provided with two excitation coils which are formed by winding enameled wires.

3. The integrated composite probe for detecting deformation in a pipeline according to claim 1, wherein: the end part of the four-bar mechanism (4) is connected with a rotating shaft.

4. The integrated composite probe for detecting deformation in a pipeline according to claim 1, wherein: the base (6) can be connected with the rigid framework of the inner detector.

5. The integrated composite probe for detecting deformation in a pipeline according to claim 1, wherein: the Hall chip (5) is in an AS5145 chip type, and the Hall chip (5) is connected with one end of the four-bar mechanism (4) through the magnetic rotating structure (10).

Technical Field

The invention relates to the technical field of pipeline deformation detection, in particular to an integrated pipeline deformation internal detection composite probe.

Background

Many pipelines are buried underground, the pipeline is deformed, bent, displaced, corroded and other defects can be caused due to the influence of factors such as geological condition change, pipeline corrosion and the like for too long time, the defects can cause pipeline breakage when accumulated to a certain degree, accidents are caused, and public property and life safety are harmed, so that pipeline detection equipment is required to be used for regularly detecting the interior of the pipeline, the pipeline can be ensured to run safely, problems existing in the pipeline can be timely and accurately found, the service life of the pipeline is prolonged, the traditional detection probe is low in measurement precision, only the maximum deformation quantity of the pipeline can be detected, and the pipeline deformation near the maximum deformation quantity cannot be detected.

Disclosure of Invention

The invention aims to provide an integrated composite probe for detecting pipeline deformation in order to solve the problems that the traditional detection probe is low in measurement accuracy, can only detect the maximum deformation of the pipeline deformation and cannot detect the pipeline deformation near the maximum deformation.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an integration pipeline warp interior detection composite probe, includes pulse eddy current testing module and magnetic rotation coding detection module, its characterized in that: the upper portion of pulse eddy current detection module is equipped with pulse eddy current deformation sensor, and pulse eddy current deformation sensor's sub-unit connection has the eddy current detection unit casing, pulse eddy current deformation sensor's upper portion is equipped with compound magnetic field detecting element, the one end fixedly connected with link of eddy current detection unit casing, and the other end of link is connected with fixture, fixture's downside is connected with four-bar linkage, the upper portion of rotatory code detection module of magnetism is equipped with the rotatory code detection unit protective housing of magnetism, the inside magnetism revolution mechanic that is equipped with of the rotatory code detection unit protective housing of magnetism, radial magnet is installed to a magnetism revolution mechanic tip, the rotatory code detection unit protective housing inboard of magnetism is equipped with hall chip, the lower part of the rotatory code detection unit protective housing of magnetism is connected with the base.

Preferably, the pulse eddy current deformation sensor is composed of a TMR2503 magnetic flux tunnel type chip, an amplifying circuit and a filter circuit, two exciting coils are arranged at the lower part of the pulse eddy current deformation sensor and formed by winding enameled wires, the pulse eddy current deformation sensor is used for detecting the intensity of the magnetic field, the magnetic field is generated by pulse exciting voltage, and the detected pipeline generates an eddy current field.

Preferably, the end part of the four-bar mechanism is connected with a rotating shaft, so that the four-bar mechanism, the clamping mechanism and the eddy current deformation sensor base form a parallelogram mechanism.

Preferably, the base can be connected with the rigid framework of the inner detector, so that the overall stability of the detection probe can be improved.

Preferably, the Hall chip is an AS5145 chip and is connected with one end of the four-bar mechanism through a magnetic rotating structure, the Hall chip has the characteristics of high precision, small size and non-contact detection, and a cylindrical magnet which is magnetized in the radial direction is placed at a certain height right above the Hall chip. When the magnet rotates around the axis, the Hall chip can detect the corresponding rotation angle and transmit a signal to a data storage system of the detector in the pipeline, so that the aim of detecting the maximum deformation of the pipeline is fulfilled.

Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the pulse eddy current deformation sensor and the eddy current deformation sensor base, is based on the magnetic rotation coding detection technology and the eddy current distance measurement principle, is applied to the detection of the deformation quantity of the pipeline, increases the effective information of the circumferential detection of the pipeline, improves the detection precision, can keep the pulse eddy current deformation sensor and the eddy current deformation sensor base to be constantly kept horizontal through the four-bar mechanism, adds two magnetic detection elements which are symmetrically distributed on the probe protection shell of the pipeline deformation detector, increases the circumferential precision of the pipeline detection based on the pulse eddy current detection principle, and realizes the three-dimensional reconstruction of the deformation profile of the pipeline.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of the front view structure of the present invention.

Fig. 3 is a schematic bottom view of the present invention.

FIG. 4 is a schematic view of a magnetic rotation structure according to the present invention.

In the figure: the device comprises a 1-pulse eddy current deformation sensor, a 2-eddy current detection unit shell, a 3-clamping mechanism, a 4-four-bar mechanism, a 5-Hall chip, a 6-base, a 7-composite magnetic field detection unit, an 8-connecting frame, a 9-radial magnet, a 10-magnetic rotation structure and an 11-magnetic rotation coding detection unit protective shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, in the embodiment of the present invention, an integrated composite probe for detecting pipeline deformation in an integrated pipeline includes a pulse eddy current detection module and a magnetic rotation coding detection module, wherein a pulse eddy current deformation sensor 1 is disposed on an upper portion of the pulse eddy current detection module, the pulse eddy current deformation sensor 1 can detect the intensity of a composite magnetic field, a lower portion of the pulse eddy current deformation sensor 1 is connected to an eddy current sensor housing 2, the eddy current sensor housing 2 provides a mechanical support structure for an excitation coil and the pulse eddy current deformation sensor, a composite magnetic field detection unit 7 is disposed on an upper portion of the pulse eddy current deformation sensor 1, the composite magnetic field detection unit 7 can be used for placing an excitation signal and a magnetic detection element, one end of the eddy current sensor housing 2 is fixedly connected to a connection frame 8, which can improve the stability of the detection probe, and the other end of, the clamping mechanism 3 can be connected with a four-bar mechanism and a probe, the four-bar mechanism 4 is connected to the lower side of the clamping mechanism 3, the four-bar mechanism 4 can keep a detection probe protective shell horizontal with a base at any time and improve the accuracy of eddy current detection deformation, a magnetic rotation coding detection unit protective shell 11 is arranged at the upper part of the magnetic rotation coding detection module, the magnetic rotation coding detection unit protective shell 11 has the function of storing a magnetic rotation coding chip, a magnetic rotation structure 10 is arranged in the magnetic rotation coding detection unit protective shell 11, a radial magnet 9 is installed at one end part of the magnetic rotation structure 10, a Hall chip 5 is arranged at the inner side of the magnetic rotation coding detection unit protective shell 11, the Hall chip 5 can detect the rotation angle of the radial magnet 9 to detect the maximum deformation of a pipeline, and the lower part of the magnetic rotation coding detection unit protective shell 11 is, the base 6 may provide a mechanical support structure for the entire probe.

The pulse eddy current deformation sensor 1 is composed of a TMR2503 magnetic flux tunnel type chip, an amplifying circuit and a filter circuit, two exciting coils are arranged on the lower portion of the pulse eddy current deformation sensor 1 and formed by winding enameled wires, the pulse eddy current deformation sensor 1 is used for detecting the intensity of magnetic field, the magnetic field is generated through pulse exciting voltage, and an eddy current field is generated in a detected pipeline.

The end part of the four-bar mechanism 4 is connected with a rotating shaft, so that the four-bar mechanism 4, the clamping mechanism 3 and the eddy current deformation sensor base 6 form a parallelogram mechanism.

The base 6 can be connected with the rigid framework of the internal detector, and the overall stability of the detection probe can be improved.

The type of the Hall chip 5 is AS5145 chip, the Hall chip 5 is connected with one end of the four-bar mechanism 4 through the magnetic rotating structure 10, the Hall chip 5 has the characteristics of high precision, small volume and non-contact detection, and a cylindrical magnet which is magnetized in the radial direction is placed at a certain height right above the Hall chip 5. When the magnet rotates around the axis, the Hall chip 5 can detect the corresponding rotation angle and transmit a signal to a data storage system of the detector in the pipeline, so that the aim of detecting the maximum deformation of the pipeline is fulfilled.

The deformation detection of the pipeline deformation detection probe mainly comprises a magnetic rotary encoder and an eddy current detection probe, the deformation quantity of the maximum deformation position of a deformed pipeline is detected through the angle change between a pulse eddy current deformation sensor 1 and an eddy current deformation sensor base 6, the detection precision of the deformation in the pipeline is improved because the size of a magnetic sensitive element is small, the number of detection points can be increased in the circumferential direction of the pipeline, meanwhile, an exciting coil and a detection element are arranged at the upper part of a probe protective shell 7, the information of the deformation of the pipeline is calibrated through the change of chip output voltage caused by the induction of the change of the composite magnetic field intensity, a primary magnetic field is generated by the pulse eddy current deformation sensor 1 through pulse exciting voltage, the pipeline to be detected generates an eddy current field, a secondary magnetic field is generated by the eddy current field, when the deformation of the pipeline exists, the eddy current field changes, the composite, when the pipeline deforms, the distance between the exciting coil and the pipeline changes, the Hall chip 5 calibrates deformation information of the pipeline by detecting the change condition of the composite magnetic field to achieve the purpose of pipeline deformation detection, the magnetic rotary encoding detection chip in the magnetic rotary encoding mechanism shell 5 records the angle change of the four-bar mechanism caused by pipeline deformation so that the output voltage of the detection chip changes, and the deformation quantity of the pipeline is calibrated through the change of the voltage value in the later data processing, so that the detection precision of the pipeline can be ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description. Any reference sign in a claim should not be construed as limiting the claim concerned.