CN219623825U

CN219623825U - Oil gas pipeline leakage detection device

Info

Publication number: CN219623825U
Application number: CN202320580318.6U
Authority: CN
Inventors: 罗颖; 王威; 杜友如; 罗建国; 李瑞川; 胡爱琴; 胡洪瑞
Original assignee: Sichuan Jishi Technology Co ltd
Current assignee: Sichuan Jishi Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-09-01
Anticipated expiration: 2033-03-22

Abstract

The utility model belongs to the technical field of pipeline detection, and particularly relates to an oil and gas pipeline leakage detection device which comprises a piezoelectric transducer, a shearing piezoelectric ceramic piece, a signal excitation module, a signal receiving module and a signal processing module, wherein the shearing piezoelectric ceramic piece is arranged on the piezoelectric transducer; the piezoelectric transducer is arranged on the outer wall of the oil gas pipeline; the shearing piezoelectric ceramic piece is arranged on the piezoelectric transducer; the signal excitation module, the signal receiving module and the signal processing module are sequentially in communication connection. The oil gas pipeline leakage detection device can generate guided waves which are oriented in a required direction and have wider bandwidth, and the signals are analyzed and processed in real time through the signal excitation module, the signal receiving module and the signal processing module to determine the existence of leakage.

Description

Oil gas pipeline leakage detection device

Technical Field

The utility model belongs to the technical field of pipeline detection, and particularly relates to an oil and gas pipeline leakage detection device.

Background

Ultrasonic guided waves have been used in the petroleum industry for many years for detecting defects and corrosion in oil and gas pipelines. These waves are generated at the pipe wall and propagate along the surface or length of the pipe. Piezoelectric sensors mounted on the surface of the pipe can detect these waves and can be used to generate signals that are analyzed to determine the presence of defects or corrosion. In-plane shear piezoceramics are commonly used for this purpose, but they do not produce single-mode guided waves, the direction of the waves is difficult to control, and the bandwidth of the signal is limited. And the existing oil gas pipeline leakage detection device cannot process the generated signals in real time.

Disclosure of Invention

Aiming at the technical problems in the background technology, the utility model provides an oil gas pipeline ultrasonic guided wave detection device, which is used for transmitting guided waves into a pipeline through an ultrasonic transducer, receiving acoustic reflection from the wall surface of the pipeline and connecting the acoustic reflection to a signal processing module; processing the received acoustic signals through a signal processing module, and outputting a diagnosis result; the operation of the device is further controlled by the signal control module.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the oil and gas pipeline leakage detection device comprises a piezoelectric transducer, a shearing piezoelectric ceramic plate, a signal excitation module, a signal receiving module and a signal processing module;

the piezoelectric transducer is arranged on the outer wall of the oil gas pipeline; the shearing piezoelectric ceramic piece is arranged on the piezoelectric transducer; the signal excitation module, the signal receiving module and the signal processing module are sequentially in communication connection.

Further, a shear piezoelectric ceramic piece is arranged on the piezoelectric transducer; the signal excitation module, the signal receiving module and the signal processing module are sequentially in communication connection.

Further, the signal excitation module comprises a low-pass filtering unit, an amplifying unit and an analog-to-digital conversion unit which are sequentially connected in a communication way;

the low-pass filtering unit is in communication connection with the piezoelectric transducer; the analog-to-digital conversion unit is in communication connection with the signal receiving module.

Further, the low-pass filtering unit adopts a filter of the model AKOUSTIS.

Further, the amplifying unit adopts an amplifier of the model OPA 2365.

Further, the analog-to-digital conversion unit adopts an analog-to-digital converter with the model number of ADS 1258.

Further, the signal receiving module comprises a resistor R35, a grounding resistor R36, a resistor R37, a resistor R38, a capacitor C12, a capacitor C13, a grounding capacitor C15, a capacitor C16, a zener diode DZ2 and a chip U5 with the model of AD8605 ARTY;

one end of the resistor R35 is used as a signal end V1 of the signal receiving module and is connected with the analog-digital conversion unit; the other end of the resistor R35 is respectively connected with one end of a grounding resistor R36 and a resistor R37, one end of a capacitor C12 and the cathode of the zener diode DZ 2; the positive electrode of the voltage stabilizing diode DZ2 is grounded; the other end of the resistor R37 is connected with one end of the capacitor C13; the other end of the capacitor C12 is respectively connected with one end of the resistor R38 and the 4 th pin of the chip U5; the 1 st pin of the chip U5 is respectively connected with the other end of the capacitor C13, one end of the capacitor C16 and the other end of the resistor R38; the 2 nd pin of the chip U5 is grounded; the 3 rd pin of the chip U5 is connected with the grounding capacitor C15; the 5 th pin of the chip U5 is connected with a 3.3V power supply; the other end of the capacitor C16 is used as a signal end V2 of the signal receiving module and is connected with the signal processing module.

Further, the signal processing module adopts a singlechip with the model of STM32F 407.

The utility model has the following advantages and beneficial effects:

(1) The oil gas pipeline leakage detection device can generate guided waves which are oriented in a required direction and have wider bandwidth, and the signals are analyzed and processed in real time through the signal excitation module, the signal receiving module and the signal processing module to determine the existence of leakage;

(2) The oil gas pipeline leakage detection device is simple in structure and easy to realize, can be used for detecting defects in a pipeline, and has higher precision and efficiency compared with the existing in-plane shearing piezoelectric ceramics.

Drawings

FIG. 1 is a block diagram of an oil and gas pipeline leak detection apparatus;

fig. 2 is a circuit diagram of a signal receiving module.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in FIG. 1, the utility model provides an oil and gas pipeline leakage detection device, which comprises a piezoelectric transducer, a shearing piezoelectric ceramic piece, a signal excitation module, a signal receiving module and a signal processing module;

In the device, a piezoelectric transducer is arranged on the surface of a pipeline and is excited by a signal excitation module to generate a signal. The shear piezoelectric ceramic plate is attached to the piezoelectric transducer and produces a single mode T (0, 1) guided wave that is oriented in a desired direction with a wide bandwidth. The signal is detected by the signal receiving module and analyzed by the signal processing module to determine the presence of a leak.

In an embodiment of the utility model, the shear piezoelectric ceramic sheet is disposed on the piezoelectric transducer by an adhesive.

In the embodiment of the utility model, as shown in fig. 1, the signal excitation module comprises a low-pass filtering unit, an amplifying unit and an analog-to-digital conversion unit which are sequentially connected in a communication way;

The low-pass filter unit is used for passing signals of the required frequency components only, the amplifying unit is used for amplifying the signals to required power, and the analog-to-digital conversion unit is used for converting analog signals into digital signals.

In the embodiment of the utility model, the low-pass filtering unit adopts a filter with the model AKOUSTIS.

In the embodiment of the utility model, the amplifying unit adopts an amplifier with the model of OPA 2365.

In the embodiment of the utility model, the analog-to-digital conversion unit adopts an analog-to-digital converter with the model number ADS 1258.

In the embodiment of the utility model, as shown in fig. 2, the signal receiving module includes a resistor R35, a grounding resistor R36, a resistor R37, a resistor R38, a capacitor C12, a capacitor C13, a grounding capacitor C15, a capacitor C16, a zener diode DZ2, and a chip U5 with a model of AD8605 ARTZ;

In the embodiment of the utility model, the signal processing module adopts a singlechip with the model STM32F 407.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An oil gas pipeline leak detection device, its characterized in that: the device comprises a piezoelectric transducer, a shearing piezoelectric ceramic piece, a signal excitation module, a signal receiving module and a signal processing module;

2. The oil and gas pipeline leak detection apparatus of claim 1, wherein: the shearing piezoelectric ceramic plate is arranged on the piezoelectric transducer through an adhesive.

3. The oil and gas pipeline leak detection apparatus of claim 1, wherein: the signal excitation module comprises a low-pass filtering unit, an amplifying unit and an analog-to-digital conversion unit which are sequentially connected in a communication way;

4. The oil and gas pipeline leak detection apparatus of claim 3, wherein: the low-pass filtering unit adopts a filter with the model of AKOUSTIS.

5. The oil and gas pipeline leak detection apparatus of claim 3, wherein: the amplifying unit adopts an amplifier with the model of OPA 2365.

6. The oil and gas pipeline leak detection apparatus of claim 3, wherein: the analog-to-digital conversion unit adopts an analog-to-digital converter with the model number of ADS 1258.

7. The oil and gas pipeline leak detection apparatus of claim 3, wherein: the signal receiving module comprises a resistor R35, a grounding resistor R36, a resistor R37, a resistor R38, a capacitor C12, a capacitor C13, a grounding capacitor C15, a capacitor C16, a voltage-stabilizing diode DZ2 and a chip U5 with the model of AD8605 ARTY;

one end of the resistor R35 is used as a signal end V1 of the signal receiving module and is connected with the analog-digital conversion unit; the other end of the resistor R35 is respectively connected with one end of a grounding resistor R36 and one end of a resistor R37, one end of a capacitor C12 and the cathode of a zener diode DZ 2; the positive electrode of the voltage stabilizing diode DZ2 is grounded; the other end of the resistor R37 is connected with one end of the capacitor C13; the other end of the capacitor C12 is respectively connected with one end of the resistor R38 and the 4 th pin of the chip U5; the 1 st pin of the chip U5 is respectively connected with the other end of the capacitor C13, one end of the capacitor C16 and the other end of the resistor R38; the 2 nd pin of the chip U5 is grounded; the 3 rd pin of the chip U5 is connected with a grounding capacitor C15; the 5 th pin of the chip U5 is connected with a 3.3V power supply; the other end of the capacitor C16 is used as a signal end V2 of the signal receiving module and is connected with the signal processing module.

8. The oil and gas pipeline leak detection apparatus of claim 1, wherein: the signal processing module adopts a singlechip with the model of STM32F 407.