Pipeline sand content monitoring system and monitoring method

Abstract

The present invention discloses a pipeline sand content monitoring system and a monitoring method, wherein the pipeline sand content monitoring system includes a noise collection device, a flow rate monitoring device and a data processing device. The noise collection device is used to obtain the collision noise signal intensity generated by the fluid medium in the pipeline colliding with the bending section of the pipeline, and the flow rate monitoring device is used to collect the flow velocity of the fluid medium in the pipeline. The data processing device is used to calculate the sand content of the fluid medium in the pipeline based on the noise signal intensity, the reference noise signal intensity corresponding to the flow velocity, the standard noise signal intensity corresponding to the flow velocity, and the standard mass of sand and gravel. The present invention monitors the sand content of the fluid medium by collecting sound wave signals, which can avoid setting most of the devices of the monitoring system inside the pipeline, improve the stability and service life of the monitoring system, and reduce the difficulty of installation and maintenance of the monitoring system.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline monitoring, and in particular relates to a pipeline sand content monitoring system and a monitoring method. Background Art

[0002] In the process of transporting fluid media such as oil and gas by pipeline, it is often necessary to monitor the sand content of the fluid medium in real time to grasp the purity and quality of the fluid medium under the current transportation state. Especially for submarine transport pipelines, since they are connected to production equipment on the seabed or sea level, they often contain a lot of sand and gravel. Therefore, monitoring the sand content of the fluid medium inside is particularly important.

[0003] At present, the main method used is the implanted sand content monitoring method. This method implants resistance sensors, laser sensors, etc. into the pipeline to obtain sand content information through the built-in sensors. However, the internal environment of the pipeline is complicated and the pressure inside the pipeline is high. These harsh working environments have a great negative impact on the sensors, seriously reducing the service life and stability of the sensors. In addition, once the sensor in the pipeline fails, it is difficult to remove it, repair it, or replace it, which seriously affects the normal operation of the monitoring system.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a pipeline sand content monitoring system, which is used to solve the problems of low service life and stability of sensors in existing monitoring systems, as well as difficulty in repair and replacement after failure.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a pipeline sand content monitoring system, including a noise collection device, a flow rate monitoring device and a data processing device. The noise collection device is used to obtain the collision noise signal intensity T generated by the fluid medium in the pipeline colliding with the pipeline bending section, and the flow rate monitoring device is used to collect the flow velocity v of the fluid medium in the pipeline. The data processing device is used to calculate the sand content S of the fluid medium in the pipeline based on the noise signal intensity T, the reference noise signal intensity J corresponding to the flow velocity v, the standard noise signal intensity B corresponding to the flow velocity v and the standard mass n of sand and gravel. Among them, the reference noise signal represents the noise signal generated by the fluid medium without sand and gravel colliding with the pipeline bending section, and the standard noise signal represents the noise signal generated by the fluid medium containing standard mass n sand and gravel colliding with the pipeline bending section.

[0007] In one or more embodiments of the present invention, the noise collection device includes an acoustic wave sensor, which is used to receive noise and clutter generated by the fluid medium in the pipeline colliding with the curved section of the pipeline and form a corresponding acoustic wave signal.

[0008] In one or more embodiments of the present invention, the noise collection device further includes a filtering circuit, an amplifying circuit, and a data collection circuit. The filtering circuit is electrically connected to the output end of the acoustic wave sensor and is used to filter the acoustic wave signal generated by the acoustic wave sensor; the amplifying circuit is electrically connected to the filtering circuit and is used to amplify the filtered acoustic wave signal; and the data collection circuit is electrically connected to the amplifying circuit and is used to pick up the collision noise signal in the amplified acoustic wave signal.

[0009] In one or more embodiments of the present invention, the noise collection device further comprises at least one PCB board, on which a filter circuit, an amplifier circuit and a data collection circuit are arranged and electrically connected to the sound wave sensor.

[0010] In one or more embodiments of the present invention, the data processing device is used to calculate the difference between the noise signal strength T and the reference noise signal strength J, and based on the ratio of the difference to the standard noise signal strength B, calculate the sand content S of the fluid medium in the pipeline.

[0011] In one or more embodiments of the present invention, the data processing device determines the relationship between the reference noise signal intensity J and the standard noise signal intensity B and the flow velocity v according to a linear fitting regression equation.

[0012] In one or more embodiments of the present invention, the data processing device uses the sand content algorithm The sand content S of the fluid medium is calculated.

[0013] In one or more embodiments of the present invention, the data processing device is used to send control algorithm information to the noise collection device, and the control algorithm includes one or more of a filtering algorithm, an amplifying circuit algorithm, and a waveform picking algorithm.

[0014] In one or more embodiments of the present invention, the sand content monitoring system further comprises a fixing device, and the noise collecting device is detachably connected to the fixing device and is installed on the outside of the pipeline through the fixing device.

[0015] Another aspect of the present invention provides a method for monitoring sand content in a pipeline, comprising the following steps:

[0016] S1, obtaining the collision noise signal strength T generated by the fluid medium in the pipeline colliding with the bending section of the pipeline through the noise collection device, and obtaining the flow velocity v of the fluid medium through the flow velocity monitoring device;

[0017] S2, calculating the reference noise signal strength J and the standard noise signal strength B corresponding to the flow velocity v by the data processing device;

[0018] S3. Calculate the sand content S of the fluid medium through the data processing device.

[0019] Compared with the prior art, the present invention obtains the corresponding collision noise signal intensity and the corresponding flow velocity through a noise collection device and a flow velocity monitoring device. The data processing device obtains the baseline noise signal intensity and the standard noise signal intensity according to the flow velocity, and calculates the sand content of the fluid medium in the pipeline, which greatly improves the efficiency and accuracy of sand content monitoring.

[0020] Furthermore, the present invention monitors the sand content of the fluid medium by collecting acoustic wave signals, which can avoid placing most of the devices of the monitoring system inside the pipeline, thereby improving the stability and service life of the monitoring system and reducing the difficulty of installation and maintenance of the monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a pipeline sand content monitoring system in Embodiment 1 of the present invention;

[0023] Figure 2 This is a flowchart of the upper computer in the first embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the installation positions of the noise collection device and the fixing device in the first embodiment of the present invention;

[0025] Figure 4 This is a flow chart of a method for monitoring sand content in a pipeline in Embodiment 1 of the present invention.

[0026] Explanation of main figure marks: 1. Noise collection device, 11. Sound wave sensor, 12. PCB board, 13. Filter circuit, 14. Amplification circuit, 15. Data acquisition circuit, 2. Flow rate monitoring device, 3. Data processing device, 4. Fixing device, 5. Pipeline, 51. Pipeline bending section, 6. Fluid medium, 7. Sand and gravel. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] Reference Figure 1 As shown, this embodiment provides a pipeline sand content monitoring system, which includes a noise collection device 1, a flow rate monitoring device 2 and a data processing device 3.

[0030] Specifically, the noise collecting device 1 is used to obtain the collision noise signal strength T generated by the fluid medium 6 in the pipeline 5 colliding with the pipeline bending section 51. The flow rate monitoring device 2 is used to collect the flow rate v of the fluid medium 6 in the pipeline 5. The data processing device 3 is used to calculate the sand content S of the fluid medium 6 in the pipeline 5 based on the noise signal strength T, the reference noise signal strength J corresponding to the flow rate v, the standard noise signal strength B corresponding to the flow rate v and the standard mass n of the sand and gravel 7.

[0031] In the above scheme, the baseline noise signal represents the noise signal generated by the fluid medium 6 without sand and gravel 7 colliding with the pipe bending section 51, and the standard noise signal represents the noise signal generated by the fluid medium 6 containing standard mass n sand and gravel 7 colliding with the pipe bending section 51. The standard mass n can be freely set by the user, for example, it can be set to 1g / s, 5g / s, 10g / s or other arbitrary values.

[0032] Furthermore, the data processing device 3 in this embodiment calculates the sand content S of the fluid medium 6 according to the sand content algorithm. The sand content algorithm is specifically:

[0033] The collision noise signal strength T can be acquired by the noise acquisition device 1 to acquire the collision noise signal generated by the fluid medium 6 colliding with the pipe bending section 51 , and the collision noise signal strength T can be calculated based on the information carried by the collision noise signal.

[0034] The relationship between the baseline noise signal intensity J and the flow velocity v can be obtained through a standard loop test. During the specific test, a fluid medium 6 without sand and gravel 7 is injected into the pipeline 5, and a certain speed is provided to the fluid medium 6. The noise signal generated by the collision with the pipeline bending section 51 is collected, and the baseline noise signal intensity corresponding to the noise signal is obtained.

[0035] Then, the flow rate of the fluid medium 6 is changed, and the above steps are repeated to obtain the reference noise signal strength J corresponding to different flow rates v.

[0036] Then, the relationship between the baseline noise signal intensity J and the flow velocity v is determined by a linear fitting regression equation. In actual situations, a suitable fitting regression equation can be selected based on reference factors such as the data accuracy and data quantity obtained from the standard loop test, such as a linear regression fitting regression equation, a quadratic polynomial fitting regression equation, a cubic polynomial fitting regression equation, a semi-logarithmic fitting regression equation, or other fitting regression equations that are easily known to those skilled in the art.

[0037] During the specific fitting, the various parameters of the corresponding fitting regression equation can be solved through relevant calculation software or calculation program.

[0038] Similarly, the relationship between the standard noise signal intensity B and the flow velocity v can also be obtained through the above steps.

[0039] The above is the sand content calculation idea adopted by the data processing device 3 in this embodiment. The following is a further introduction to other devices included in the pipeline sand content monitoring system.

[0040] The noise collection device 1 in this embodiment includes an acoustic wave sensor 11, which is used to receive the noise generated by the fluid medium 6 in the pipeline 5 colliding with the pipeline bending section 51 and form a corresponding acoustic wave signal.

[0041] In order to further process the sound wave signal output by the sound wave sensor 11 to accurately obtain the collision noise signal intensity T, the noise collection device 1 in this embodiment further includes a filtering circuit 13 , an amplifying circuit 14 and a data collection circuit 15 .

[0042] Among them, the filter circuit 13 is electrically connected to the output end of the acoustic wave sensor 11. After the acoustic wave signal generated by the acoustic wave sensor 11 is transmitted to the filter circuit 13, the filter circuit 13 removes interference components and unnecessary frequency components in the acoustic wave signal to improve the quality and reliability of the acoustic wave signal.

[0043] The amplifier circuit 14 is electrically connected to the filter circuit 13 and is used to amplify the sound wave signal after filtering, increase the amplitude of the sound wave signal, and enhance the strength and quality of the sound wave signal.

[0044] The data acquisition circuit 15 is electrically connected to the amplification circuit 14 and is used to pick up the collision noise signal in the amplified sound wave signal.

[0045] Reference Figure 2 As shown, the noise collection device 1 in this embodiment further includes a PCB board 12 , and a filter circuit 13 , an amplifier circuit 14 and a data collection circuit 15 are arranged on the PCB board 12 .

[0046] Furthermore, considering that the PCB board 12 is easily damaged when the noise collection device 1 is used in a harsh environment, a redundant design is adopted in the present embodiment, and two PCB boards 12 are provided. A filter circuit 13, an amplifying circuit 14 and a data acquisition circuit 15 are respectively provided on each PCB board 12, and are respectively electrically connected to the acoustic wave sensor 11, so as to improve the stability of acoustic wave signal collection.

[0047] When one of the PCB boards 12 is damaged, causing any one of the filter circuit 13, the amplifier circuit 14 and the data acquisition circuit 15 to fail, the sound wave signal can be processed by the filter circuit 13, the amplifier circuit 14 and the data acquisition circuit 15 on the other PCB board 12.

[0048] The number of the PCB boards 12 is not limited to two. In other embodiments, three or more PCB boards 12 may be provided.

[0049] Reference Figure 3 As shown, the pipeline sand content monitoring system in this embodiment also includes a fixing device 4, which is installed on the outer wall of the pipeline 5. The noise collection device 1 is installed on the outside of the pipeline 5 through the fixing device 4 to avoid opening a hole in the pipeline 5 to damage its pipe wall.

[0050] Preferably, the fixing device 4 is installed at a position close to the pipe bending section 51 .

[0051] Preferably, the noise collecting device 1 is connected to the fixing device 4 in a detachable manner to facilitate installation and removal of the acoustic wave sensor 11 .

[0052] Preferably, the fixing device 4 is fixed to the outer wall of the pipeline 5 by a clamp.

[0053] The data processing device 3 in this embodiment has a reserved algorithm configuration function, through which the user can send control algorithm information to the noise collection device 1 to adjust the algorithm used by the filter circuit 13, the amplifier circuit 14 and the data collection circuit 15 to process the sound wave signal.

[0054] The above control algorithm includes but is not limited to a filtering algorithm, an amplifying circuit 14 algorithm and a waveform picking algorithm.

[0055] The data processing device 3 in this embodiment can be set as a host computer, and the user can configure the sand content algorithm through the host computer.

[0056] After the upper computer calculates the sand content S of the fluid medium 6, it can output a change curve of the sand content S, so that the user can directly observe the change of the sand content S.

[0057] Embodiment 2:

[0058] Reference Figure 4 As shown, this embodiment provides a pipeline sand content monitoring method, which uses the pipeline sand content monitoring system in Example 1 to monitor the sand content of the fluid medium 6 in the pipeline 5. The pipeline sand content monitoring method includes the following steps:

[0059] Step 1: The noise collecting device 1 is used to obtain the collision noise signal intensity T generated by the fluid medium 6 in the pipeline 5 colliding with the pipeline bending section 51 , and the flow velocity v of the fluid medium 6 is obtained by the flow velocity monitoring device 2 .

[0060] Step 2: Calculate the reference noise signal strength J and the standard noise signal strength B corresponding to the flow velocity v through the data processing device 3.

[0061] Step 3: Calculate the sand content S of the fluid medium 6 through the data processing device 3 according to the sand content algorithm.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipeline sand content monitoring system, characterized in that: include: A noise collection device, used to obtain the collision noise signal intensity T generated by the fluid medium in the pipeline colliding with the curved section of the pipeline; A flow rate monitoring device, used to collect the flow rate v of the fluid medium in the pipeline; A data processing device, for calculating the sand content S of the fluid medium in the pipeline based on the noise signal intensity T, the reference noise signal intensity J corresponding to the flow velocity v, the standard noise signal intensity B corresponding to the flow velocity v and the standard mass n of the sand and gravel; The reference noise signal represents the noise signal generated when a fluid medium without sand and gravel collides with a pipe bending section, and the standard noise signal represents the noise signal generated when a fluid medium containing a standard mass of n sand and gravel collides with a pipe bending section; The data processing device is used to calculate the difference between the noise signal strength T and the reference noise signal strength J, and based on the ratio of the difference to the reference noise signal strength B, calculate the sand content S of the fluid medium in the pipeline; The data processing device is based on the sand content algorithm The sand content S of the fluid medium is calculated.

2. The pipeline sand content monitoring system according to claim 1 is characterized in that: The noise collection device comprises an acoustic wave sensor, which is used to receive the noise and clutter generated by the fluid medium in the pipeline colliding with the bent section of the pipeline, and form a corresponding acoustic wave signal.

3. The pipeline sand content monitoring system according to claim 2 is characterized in that: The noise collection device also includes: A filter circuit, electrically connected to the output end of the acoustic wave sensor, for filtering the acoustic wave signal generated by the acoustic wave sensor; an amplifier circuit, electrically connected to the filter circuit, and used to amplify the filtered sound wave signal; The data acquisition circuit is electrically connected to the amplifying circuit and is used to pick up the collision noise signal in the amplified sound wave signal.

4. The pipeline sand content monitoring system according to claim 3 is characterized in that: The noise collection device further comprises at least one PCB board, on which the filter circuit, the amplifier circuit and the data collection circuit are arranged and electrically connected to the sound wave sensor.

5. The pipeline sand content monitoring system according to claim 1, characterized in that: The data processing device determines the relationship between the reference noise signal intensity J and the standard noise signal intensity B and the flow velocity v according to the linear fitting regression equation.

6. The pipeline sand content monitoring system according to claim 3 is characterized in that: The data processing device is used to send control algorithm information to the noise collection device, and the control algorithm includes one or more of a filtering algorithm, an amplifying circuit algorithm and a waveform picking algorithm.

7. The pipeline sand content monitoring system according to claim 1, characterized in that: The sand content monitoring system further comprises a fixing device, and the noise collecting device is detachably connected to the fixing device and is installed on the outside of the pipeline through the fixing device.

8. A method for monitoring the sand content in a pipeline, using the pipeline sand content monitoring system as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, obtaining the collision noise signal strength T generated by the fluid medium in the pipeline colliding with the bending section of the pipeline through the noise collection device, and obtaining the flow velocity v of the fluid medium through the flow velocity monitoring device; S2, calculating the reference noise signal strength J and the standard noise signal strength B corresponding to the flow velocity v by the data processing device; S3. Calculate the sand content S of the fluid medium through the data processing device.

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