CN211348053U - Detector and pipeline defect detecting system in pipeline - Google Patents
Detector and pipeline defect detecting system in pipeline Download PDFInfo
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- CN211348053U CN211348053U CN201922088610.2U CN201922088610U CN211348053U CN 211348053 U CN211348053 U CN 211348053U CN 201922088610 U CN201922088610 U CN 201922088610U CN 211348053 U CN211348053 U CN 211348053U
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Abstract
The utility model discloses a pipeline internal detector and a pipeline defect detection system, wherein the pipeline internal detector comprises a sensor module; the signal processing module is electrically connected with the sensor module; the control module is electrically connected with the signal processing module; the storage module is electrically connected with the control module; the acoustic signal generation module is electrically connected with the control module; the power supply module is respectively connected with each circuit module; and a drive device. In the process that the driving device of the technical scheme moves, the sensor module collects defect data of the pipeline in real time, the defect data are transmitted to the control module after passing through the signal processing module, the control module judges whether the position of the detector in the pipeline has the pipeline defect or not according to the defect data in real time, when the control module judges that the position of the detector in the pipeline has the pipeline defect, the sound signal generating module is started to output a sound signal, the position of the pipeline defect can be detected through detecting the position of the sound signal, and the timeliness is strong.
Description
Technical Field
The utility model relates to a pipeline defect detects technical field, and more specifically says and relates to a pipeline defect detecting system of detector in pipeline and applied this pipeline.
Background
The long-distance pipeline is one of the main modes for transporting petroleum, natural gas, finished oil and other media at home and abroad, has large transportation capacity, is not limited by other factors such as climate, ground and the like, and has low cost, safety, high efficiency, energy conservation and environmental protection. But the pipeline is damaged by external force, corroded by medium, washed and the like in the construction period and the operation process after the construction, so that the manufacturing defects, the corrosion defects, the welding seam defects and the like can not be avoided. Serious defects threaten the safe operation of the pipeline and even can cause the pipeline to fail so as to cause safety accidents.
The internal detection of the oil gas long-distance pipeline at regular intervals by using the pipeline internal detector is the most important means for avoiding safety accidents of the pipeline. In the prior art, after the detection operation in the pipeline is completed and the detector in the pipeline is taken out of the pipeline, an operator reads detection data from a data recorder, analyzes the severity of the defect and sends an internal detection report to a pipeline operator, the pipeline operator judges the severity of the pipeline defect according to the defect data in the internal detection report, positions the pipeline defect and carries out corresponding maintenance measures, and the process needs a certain time to carry out the correspondence. Namely, in the prior art, the timeliness for detecting the pipeline defects is insufficient, and serious defects of the pipeline part can fail at any time, so that accidents are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pipeline defect detecting system of detector and applied this pipeline in-detector in pipeline to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.
The technical scheme adopted for solving the technical problems is as follows:
an in-conduit detector, comprising:
the sensor module is used for acquiring defect data of the pipeline;
the signal processing module is electrically connected with the sensor module and is used for processing the signals transmitted by the sensor module;
the control module is electrically connected with the signal processing module;
the storage module is electrically connected with the control module and used for storing the defect data of the pipeline collected by the sensor module;
the acoustic signal generation module is electrically connected with the control module;
the power module is respectively and electrically connected with the sensor module, the signal processing module, the control module, the storage module and the sound signal generation module;
the driving device is provided with the sensor module, the signal processing module, the control module, the storage module, the power module and the sound signal generating module.
As a further improvement of the above technical solution, the acoustic signal generating modules include two or more acoustic signal generating modules, and each of the acoustic signal generating modules is arranged in a circumferential array with a central axis of the driving device as a center.
In the technical scheme, the acoustic signal generating module has certain directivity when outputting the acoustic signal, and in order to ensure that the acoustic signal can be accurately detected, the plurality of acoustic signal generating modules are arranged at equal intervals along the circumferential direction of the driving device, so that the detection accuracy of the acoustic signal is improved.
As a further improvement of the above technical solution, the sound signal generating module includes a housing, a wear-resistant ceramic plate, a metal substrate and a piezoelectric ceramic plate, the wear-resistant ceramic plate is disposed on the housing, the housing forms a vibration cavity with the metal substrate, or the housing forms a vibration cavity with the wear-resistant ceramic plate and the metal substrate, the piezoelectric ceramic plate is disposed on the metal substrate, the piezoelectric ceramic plate is disposed with an insulating film between the metal substrates, and the control module is electrically connected with the piezoelectric ceramic plate.
According to the technical scheme, the piezoelectric ceramic piece is used for receiving the electric signals transmitted by the control module to generate vibration, and the vibration cavity is used for generating acoustic signals, so that the function of converting the electric signals into the acoustic signals is realized.
As a further improvement of the above technical solution, the signal processing module includes a filter circuit, an amplifier circuit, and a voltage follower circuit, and the sensor module is electrically connected to the control module sequentially through the filter circuit, the amplifier circuit, and the voltage follower circuit.
According to the technical scheme, filtering, amplifying and isolating buffering operations are required to be carried out on signals transmitted by the sensor module so as to improve the identification rate of defect data of a pipeline transmitted by the sensor module, and the control module is convenient to process the defect data.
As a further improvement of the technical proposal, the filter circuit comprises a resistor R1 and a capacitor C1, the amplifying circuit comprises an operational amplifier A1, a resistor R2, a resistor R3 and a capacitor C2, the voltage following circuit comprises an operational amplifier A2, the sensor module is connected with the inverting input end of the operational amplifier A1 through the capacitor C1 and the resistor R1 in turn, the non-inverting input end of the operational amplifier A1 is grounded through the resistor R2, two ends of the resistor R3 are respectively connected with the inverting input end of the operational amplifier A1 and the output end of the operational amplifier A1, the capacitor C2 is connected in parallel with the resistor R3, the output end of the operational amplifier A1 is connected with the non-inverting input end of the operational amplifier A2, the inverting input end of the operational amplifier A2 is connected with the output end of the operational amplifier A2, and the output end of the operational amplifier A2 is connected with the control module.
As a further improvement of the above technical solution, the power supply module includes a reference source chip with a model of REF5025 and a peripheral circuit thereof.
According to the technical scheme, the reference source chip with the model being REF5025 is used as the core of the power module, so that the power module generates lower noise voltage, and the interference of the power module on the detector in the pipeline is reduced.
The application also discloses a pipeline defect detecting system, include pipeline in detector and distributed optical fiber, distributed optical fiber is used for detecting the position that is located the pipeline when the acoustic signal takes place the acoustic signal of module.
According to the technical scheme, when the detector in the pipeline detects that the pipeline has defects in the moving process, the detector outputs an acoustic signal, and when the detector in the pipeline detects the output acoustic signal, the distributed optical fiber is used for realizing the function of positioning the defects of the pipeline in real time, so that the timeliness is strong.
The utility model has the advantages that: this technical scheme utilizes drive arrangement to load all circuit module, drive arrangement removes along with the flow of medium in the pipeline, the in-process that drive arrangement removed, the defect data of pipeline is gathered in real time to the sensor module, defect data transmits to control module behind the signal processing module, control module judges whether there is the pipeline defect in the position that the detector is located in the pipeline according to defect data in real time, start the acoustic signal when control module judges that there is the pipeline defect in the position that the detector is located in the pipeline and take place the module output acoustic signal, the position of detectable pipeline defect promptly through the position that detects acoustic signal, timeliness is strong.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a block diagram of a circuit module of an in-pipe detector according to the present invention;
fig. 2 is a schematic circuit diagram of the signal processing module of the present invention;
fig. 3 is a first schematic diagram of an acoustic signal generating module of the present invention;
fig. 4 is a second schematic diagram of the acoustic signal generating module of the present invention;
fig. 5 is a schematic structural diagram of the in-pipe detector of the present invention.
100. The sound signal generating device comprises an acoustic signal generating module 110, a shell 120, a wear-resistant ceramic piece 130, a metal substrate 140, a piezoelectric ceramic piece 200 and a driving device.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 and 5, the present application discloses an in-pipe detector, whose main function is to output an acoustic signal in real time when a defect is detected at a certain position of a pipe, wherein a first embodiment of the detector comprises:
the sensor module is used for acquiring defect data of the pipeline;
the signal processing module is electrically connected with the sensor module and is used for processing the signals transmitted by the sensor module;
the control module is electrically connected with the signal processing module;
the storage module is electrically connected with the control module and used for storing the defect data of the pipeline collected by the sensor module;
the acoustic signal generating module 100 is electrically connected with the control module;
a power module electrically connected to the sensor module, the signal processing module, the control module, the storage module, and the acoustic signal generating module 100, respectively;
the driving device 200, the sensor module, the signal processing module, the control module, the storage module, the power module, and the acoustic signal generating module 100 are all installed on the driving device 200, and in this embodiment, the driving device 200 is used to provide a carrier for all circuit modules, and in practical application, the driving device 200 can move along with the flow of the medium in the pipeline.
In this embodiment the sensor module is along with when drive arrangement 200 removes, gather the defect data of pipeline in real time, among the practical application the sensor module is ultrasonic sensor and/or magnetic leakage sensor and/or deformation sensor, wherein ultrasonic sensor is used for detecting the crack defect on the pipeline wall, magnetic leakage sensor is used for detecting the volume type defect on the pipeline wall, like corrosion fish tail etc., deformation sensor is used for detecting the geometry type defect on the pipeline wall, like sunken, warp, fold etc., ultrasonic sensor, magnetic leakage sensor and deformation sensor all can output the voltage signal who uses corresponding pipeline defect as the variable, this voltage signal is promptly the defect signal.
In this embodiment, the signal processing module is configured to process the defect signal collected by the sensor module, specifically, filter, amplify, and isolate and buffer the collected defect signal. In this embodiment, the signal processing module includes a filter circuit, an amplifier circuit and a voltage follower circuit, and the sensor module is electrically connected to the control module sequentially through the filter circuit, the amplifier circuit and the voltage follower circuit.
Referring to fig. 2, in particular, the filter circuit includes a resistor R1 and a capacitor C1, the amplifier circuit includes an operational amplifier a1, a resistor R2, a resistor R3 and a capacitor C2, the voltage following circuit comprises an operational amplifier A2, the sensor module is connected with the inverting input end of the operational amplifier A1 through the capacitor C1 and the resistor R1 in turn, the non-inverting input end of the operational amplifier A1 is grounded through the resistor R2, two ends of the resistor R3 are respectively connected with the inverting input end of the operational amplifier A1 and the output end of the operational amplifier A1, the capacitor C2 is connected in parallel with the resistor R3, the output end of the operational amplifier A1 is connected with the non-inverting input end of the operational amplifier A2, the inverting input end of the operational amplifier A2 is connected with the output end of the operational amplifier A2, and the output end of the operational amplifier A2 is connected with the control module.
In this embodiment, the output impedance of the amplifying circuit is relatively high, and if the input impedance of a circuit connected to a subsequent stage of the amplifying circuit is relatively low, a considerable portion of the transmitted signal is lost in the amplifying circuit, which is not favorable for the subsequent stage of the amplifying circuit to detect and identify the signal. Therefore, the voltage follower circuit is arranged between the amplifying circuit and the control module, and the input impedance of the control module is improved through the arrangement of the voltage follower circuit.
In this embodiment, the control module is configured to identify a defect signal acquired by the sensor module, and determine whether a pipeline defect occurs at a current position of the detector in the pipeline according to the defect signal. In this embodiment, the control module includes a single chip microcomputer with model number MSP430 and a peripheral circuit thereof.
In this embodiment, the storage module is configured to store the defect signals collected by the sensor module in time sequence, so that the relevant staff can take out the detector in the pipeline in the future and analyze all the defect signals collected by the sensor module.
In this embodiment, the power module is configured to supply power to each circuit module in the in-pipeline detector, and in this embodiment, the power module includes a reference source chip of a type REF5025 and a peripheral circuit thereof. The reference source chip of the type has the characteristics of low temperature drift, low noise voltage and the like, and is used as the core of the power module, so that the power module generates lower noise voltage, and the interference of the power module on the detector in the pipeline is reduced.
Referring to fig. 3 to 5, the acoustic signal generating module 100 in this embodiment is configured to output an acoustic signal with a certain frequency range and a certain intensity range according to a control signal of the control module, specifically, the acoustic signal frequency range output by the acoustic signal generating module 100 in this embodiment is between 30Hz and 300Hz, and the output acoustic signal intensity range is between 100 db and 150 db.
In this embodiment, the acoustic signal generating modules 100 include two or more acoustic signal generating modules 100, and each acoustic signal generating module 100 is arranged in a circumferential array with a central axis of the driving device 200 as a center. In practical application, after the acoustic signal generating modules 100 are installed on the driving device 200, it is required to ensure that each acoustic signal generating module 100 is attached to the inner wall of the pipeline as much as possible, which is beneficial to reducing the transmission loss of the acoustic signal in the gas medium, is more beneficial to capturing the acoustic signal by an external device, and improves the detection accuracy of the acoustic signal.
More specifically, in this embodiment, the acoustic signal generating module 100 includes a housing 110, a wear-resistant ceramic plate 120, a metal substrate 130 and a piezoelectric ceramic plate 140, the wear-resistant ceramic plate 120 is disposed on the housing 110, the housing 110 and the metal substrate 130 form a vibration cavity, or the housing 110 and the wear-resistant ceramic plate 120 and the metal substrate 130 form a vibration cavity, the piezoelectric ceramic plate 140 is disposed on the metal substrate 130, an insulating film is disposed between the piezoelectric ceramic plate 140 and the metal substrate 130, and the control module is electrically connected to the piezoelectric ceramic plate 140. After the acoustic signal generating module 100 is installed on the driving device 200, it is necessary to ensure that one surface of the casing 110 provided with the wear-resistant ceramic sheet 120 is attached to the inner wall of the pipeline, so as to reduce the wear of the pipeline on the acoustic signal generating module 100 when the pipeline moves along with the driving device 200. In addition, the reason why the piezoelectric ceramic plate 140 is disposed on the metal substrate 130 in this embodiment is to improve the vibration amplitude of the piezoelectric ceramic plate 140 by using the stronger toughness of the metal substrate 130, thereby improving the output intensity of the acoustic signal.
The application also discloses a pipeline defect detecting system, and the first embodiment of the system comprises the in-pipeline detector and the distributed optical fiber, wherein the distributed optical fiber is used for detecting the position of the pipeline when the acoustic signal generating module 100 sends out the acoustic signal.
In practice, the distribution optical fiber is specifically arranged along the extending direction of the pipeline, and is usually arranged within 15 cm below the pipeline.
In this embodiment, when the detector in the pipeline detects that the pipeline has a defect in the moving process, an acoustic signal is output, and when the detector in the pipeline detects the position of the output acoustic signal by using the distributed optical fiber, the function of positioning the defect of the pipeline in real time is realized, and the timeliness is strong.
The method for detecting the pipeline defects by the pipeline defect detection system comprises the following steps:
step 300, processing signals of the defect data;
step 400, judging whether the defect data is larger than the trigger threshold, if so, triggering a detector in the pipeline to output an acoustic signal, otherwise, not executing any operation;
and 500, identifying the output position of the acoustic signal by the distributed optical fiber, wherein the output position of the acoustic signal is the position of the pipeline defect.
The pipeline defect detection method comprises the steps that a trigger threshold value is firstly set in the whole detection flow, the defect data of a pipeline are collected when the pipeline internal detector moves along the pipeline extending direction, the defect data are compared with the preset trigger threshold value, when the pipeline defect data collected in real time exceed the trigger threshold value, the pipeline internal detector is judged to find the pipeline defect, the pipeline internal detector outputs an acoustic signal at the moment, the output position of the distributed optical fiber set along the pipeline extending direction is utilized for identifying the acoustic signal, the pipeline defect real-time positioning function is realized, and the timeliness is strong.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (7)
1. An in-conduit detector, comprising: the method comprises the following steps:
the sensor module is used for acquiring defect data of the pipeline;
the signal processing module is electrically connected with the sensor module and is used for processing the signals transmitted by the sensor module;
the control module is electrically connected with the signal processing module;
the storage module is electrically connected with the control module and used for storing the defect data of the pipeline collected by the sensor module;
an acoustic signal generation module (100) electrically connected to the control module;
the power supply module is respectively and electrically connected with the sensor module, the signal processing module, the control module, the storage module and the sound signal generation module (100);
the driving device (200), the sensor module, the signal processing module, the control module, the storage module, the power supply module and the sound signal generation module (100) are all installed on the driving device (200).
2. An in-duct detector according to claim 1, wherein: the acoustic signal generating modules (100) comprise two or more than two acoustic signal generating modules, and the acoustic signal generating modules (100) are arranged in a circumferential array by taking the central axis of the driving device (200) as the center.
3. An in-duct detector according to claim 1, wherein: the sound signal generating module (100) comprises a shell (110), a wear-resistant ceramic piece (120), a metal substrate (130) and a piezoelectric ceramic piece (140), the wear-resistant ceramic piece (120) is arranged on the shell (110), the shell (110) and the metal substrate (130) form a vibration cavity, or the shell (110) and the wear-resistant ceramic piece (120) and the metal substrate (130) form a vibration cavity, the piezoelectric ceramic piece (140) is arranged on the metal substrate (130), an insulating film is arranged between the piezoelectric ceramic piece (140) and the metal substrate (130), and the control module is electrically connected with the piezoelectric ceramic piece (140).
4. An in-duct detector according to claim 1, wherein: the signal processing module comprises a filter circuit, an amplifying circuit and a voltage following circuit, and the sensor module is electrically connected with the control module sequentially through the filter circuit, the amplifying circuit and the voltage following circuit.
5. An in-duct detector according to claim 4, wherein: the filter circuit comprises a resistor R1 and a capacitor C1, the amplifying circuit comprises an operational amplifier A1, a resistor R2, a resistor R3 and a capacitor C2, the voltage follower circuit comprises an operational amplifier A2, the sensor module is connected with the inverting input end of the operational amplifier A1 sequentially through the capacitor C1 and the resistor R1, the non-inverting input end of the operational amplifier A1 is grounded through the resistor R2, two ends of the resistor R3 are respectively connected with the inverting input end of the operational amplifier A1 and the output end of the operational amplifier A1, the capacitor C2 is connected with the resistor R3 in parallel, the output end of the operational amplifier A1 is connected with the non-inverting input end of the operational amplifier A2, the inverting input end of the operational amplifier A2 is connected with the output end of the operational amplifier A2, and the output end of the operational amplifier A2 is connected with the control module.
6. An in-duct detector according to claim 1, wherein: the power supply module comprises a reference source chip with the model of REF5025 and a peripheral circuit thereof.
7. A pipeline defect detection system, characterized by: comprising an in-pipe detector according to any of claims 1 to 6 and a distributed optical fibre for detecting the position of the pipe at which the acoustic signal is emitted by the acoustic signal generating module (100).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922088610.2U CN211348053U (en) | 2019-11-27 | 2019-11-27 | Detector and pipeline defect detecting system in pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922088610.2U CN211348053U (en) | 2019-11-27 | 2019-11-27 | Detector and pipeline defect detecting system in pipeline |
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| CN211348053U true CN211348053U (en) | 2020-08-25 |
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| CN201922088610.2U Active CN211348053U (en) | 2019-11-27 | 2019-11-27 | Detector and pipeline defect detecting system in pipeline |
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