Pipeline vibration detection device and pipeline vibration detection method

Abstract

The invention relates to a pipeline vibration detection device and a pipeline vibration detection method.The pipeline vibration detection device comprises a sensor system, a fixing assembly and a data processing part, the sensor system is arranged on the peripheral wall of a heat distribution pipeline, and the sensor system is used for collecting vibration speed data of the heat distribution pipeline; the fixing assembly is used for installing the sensor system on a preset detection position on the peripheral wall of the heat distribution pipeline; the data processing part is connected with the sensor system and used for receiving the vibration speed data and processing the vibration speed data so as to determine the position of a vibration source on the heat distribution pipeline. According to the pipeline vibration detection device, through cooperation of the fixing assembly, the sensor system and the data processing part, the accuracy and reliability of the determined vibration source position can be improved; and through cooperation of the sensor system and the data processing part, the efficiency of determining the position of the vibration source is improved, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline detection, in particular to a pipeline vibration detection device and a pipeline vibration detection method. BACKGROUND

[0002] At present, the power supply system in China mainly relies on coal-fired power plants for power generation. Under the guidance of the double carbon target, the construction of new power systems has increased the proportion of renewable energy installations. However, the large-scale grid connection of new energy (wind power, photovoltaic, etc.) electric energy has caused problems such as uncertainty of the supply side of the power grid and instability of the power system. In view of the resource endowment characteristics of China which is dominated by coal, coal-fired power units as ballast and stabilizers in the power system, the rapid load changing capability of the power unit is particularly important. The frequent fluctuations of working medium and other parameters during the rapid load changing process of the unit have a great test on the safe operation of the power unit equipment, especially the safe transportation of working medium in the thermal pipeline of the coal-fired power plant.

[0003] The thermal pipeline of the coal-fired power plant is a working medium conveying channel between the boiler main equipment and the steam turbine main equipment. On the one hand, due to the participation of the power unit in the peak regulation and load change of the power grid, the operating parameters of the unit are in a long-term fluctuating state. If improper operation occurs, the unstable flow of the working medium in the pipeline can easily cause severe vibration of the thermal pipeline. On the other hand, after the maintenance is completed, due to unreasonable equipment installation or the valve on the pipeline being stuck in the open (or closed) state for a long time, the thermal pipeline is prone to long-term abnormal vibration after the unit is operated, which affects the safe and stable operation of the unit equipment. The traditional diagnosis method is to intervene by artificial means to weaken the pipeline vibration, which cannot accurately locate the vibration source and accurately diagnose the vibration reason.

[0004] Therefore, it is necessary to provide a thermal pipeline vibration detection device and method for application in actual production, which can detect and diagnose the thermal pipeline when the equipment is abnormal, quickly find the location of the vibration source, and accurately diagnose the fault reason. It is particularly important to early detect abnormal faults of the thermal pipeline and prevent further deterioration of the fault. At the same time, the invention has important significance for ensuring the stable operation of the power unit. SUMMARY

[0005] Therefore, it is necessary to provide a thermal pipeline vibration detection device and method for application in actual production, which can detect and diagnose the thermal pipeline when the equipment is abnormal, quickly find the location of the vibration source, and accurately diagnose the fault reason. It is particularly important to early detect abnormal faults of the thermal pipeline and prevent further deterioration of the fault. At the same time, the invention has important significance for ensuring the stable operation of the power unit.

[0006] In a first aspect, the present application provides a pipeline vibration detection device suitable for a thermal pipeline, which comprises:

[0007] The sensor system is installed on the outer wall of the heat pipe and is used to collect vibration velocity data of the heat pipe.

[0008] A mounting assembly for mounting the sensor system at a pre-set detection position on the outer periphery of the thermal pipe;

[0009] The data processing unit, connected to the sensor system, receives and processes vibration velocity data to determine the location of the vibration source on the thermal pipeline.

[0010] In one embodiment, the sensor system includes:

[0011] The vibration velocity sensor is installed at the detection position and is used to collect the vibration velocity signal of the thermal pipeline.

[0012] The data acquisition unit is connected to the vibration velocity sensor. The data acquisition unit is used to receive vibration velocity signals and convert the vibration velocity signals into vibration velocity data.

[0013] In one embodiment, the vibration velocity sensing element at each detection position includes at least two vibration velocity sensors.

[0014] In one embodiment, the data acquisition device includes a data acquisition card, the input end of which is connected to the vibration velocity sensor via a first signal transmission line.

[0015] In one embodiment, the fixing component includes:

[0016] Mounting base, used to receive the vibration velocity sensor and detachably connect to the vibration velocity sensor;

[0017] Fasteners used to mount the mounting base to the outer peripheral wall of a heat pipe.

[0018] In one embodiment, the vibration velocity sensing element includes a vibration velocity sensor, the end of the vibration velocity sensor away from its own signal receiving end is provided with a threaded groove, and a threaded rod is provided on the mounting base, the threaded rod being threadedly connected to the threaded groove.

[0019] In one embodiment, the fastener includes a clamp, and the mounting base is connected to the clamp.

[0020] In one embodiment, the data processing unit includes a computer connected to the output of a data acquisition card via a second signal transmission line, and the computer stores a computer program for processing vibration velocity data.

[0021] In one embodiment, the vibration velocity sensor includes a signal amplifier.

[0022] Secondly, this application provides a pipeline vibration detection method, applicable to any of the pipeline vibration detection devices provided in the first aspect, the pipeline vibration detection method comprising the following steps:

[0023] Detection points are set at different locations on the thermal pipeline, and the sensor system is installed on the detection points on the thermal pipeline using fixing components;

[0024] The data processing unit is connected to the sensor system to obtain the vibration velocity data collected by the sensor system, and the vibration velocity is processed by the data processing unit to determine the location of the vibration source on the thermal pipeline.

[0025] The aforementioned pipeline vibration detection device includes a sensor system, a fixing component, and a data processing unit. The sensor system is mounted on the outer periphery of the thermal pipeline and is used to collect vibration velocity data of the thermal pipeline. The fixing component is used to install the sensor system at a preset detection position on the outer periphery of the thermal pipeline. The data processing unit is connected to the sensor system and is used to receive and process the vibration velocity data to determine the location of the vibration source on the thermal pipeline. The pipeline vibration detection device of this application, through the fixing component, allows for a detachable connection between the sensor system and the thermal pipeline, thus facilitating the installation of the sensor system at the preset detection position by operators to obtain vibration velocity data of the thermal pipeline. The data processing unit processes the obtained vibration velocity data, which helps improve the accuracy and reliability of the determined vibration source location. Furthermore, the cooperation between the sensor system and the data processing unit helps improve the efficiency of vibration source location determination, saving time and effort. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the pipeline vibration detection device in some embodiments of this application;

[0028] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the mounting base, fasteners, and thermal pipes in some embodiments of this application;

[0029] Figure 3 This is a structural schematic diagram illustrating the connection relationship between the mounting base and the vibration velocity sensor in some embodiments of this application;

[0030] Figure 4This is a schematic diagram illustrating an applicable scenario for vibration detection of the main steam pipeline of a 660MW thermal power unit in a power plant, as shown in one embodiment of this application.

[0031] Figure 5 It is used to embody Figure 4 Vibration signal spectrum analysis diagram of the first high-pressure regulating valve, the main steam header, and the second high-pressure regulating valve in the pipeline;

[0032] Figure 6 It is used to embody Figure 4 Time-domain analysis diagram of vibration signals of the first main steam branch pipe, the main steam header pipe and the second main steam branch pipe in the pipeline;

[0033] Figure 7 It is used to embody Figure 4 Vibration signal spectrum analysis diagram of the first main steam branch pipe, the main steam pipeline and the second main steam branch pipe.

[0034] Explanation of icon numbers:

[0035] 100. Sensor system; 110. Vibration velocity sensor; 112. Threaded groove; 120. Data acquisition unit; 122. First signal transmission line; 124. Second signal transmission line; 200. Fixing assembly; 210. Mounting base; 212. Threaded rod; 220. Fastener; 300. Data processing unit; 400. Main steam main pipe; 500. First main steam branch pipe; 600. Second main steam branch pipe; 700. First high-pressure regulating valve; 800. Second high-pressure regulating valve. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a joint; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] To address the problems of time-consuming, labor-intensive, and inefficient methods in diagnosing vibration sources in thermal pipelines based on manual experience in related technologies, the first aspect is to refer to... Figure 1 One embodiment of this application provides a pipeline vibration detection device, including a sensor system 100, a fixing component 200, and a data processing unit 300. The sensor system 100 is disposed on the outer peripheral wall of a thermal pipeline and is used to collect vibration velocity data of the thermal pipeline. The fixing component 200 is used to install the sensor system 100 at a preset detection position on the outer peripheral wall of the thermal pipeline. The data processing unit 300 is connected to the sensor system 100 and is used to receive the vibration velocity data and process the vibration velocity data to determine the location of the vibration source on the thermal pipeline.

[0043] Specifically, the operator first determines the detection position on the outer wall of the heat pipe, and then installs the sensor system 100 on the detection position of the heat pipe through the fixing component 200 to obtain the vibration velocity data at the corresponding detection position. The sensor system 100 then transmits the vibration velocity data to the data processing unit 300 for processing, so that the data acquisition determines the location of the vibration source on the heat pipe based on the vibration data.

[0044] In this embodiment, the sensor system 100 is detachably connected to the thermal pipeline through the fixing component 200, which makes it convenient for operators to install the sensor system 100 at a preset detection position to obtain vibration velocity data of the thermal pipeline. The obtained vibration velocity data is processed by the data processing unit 300, which helps to improve the accuracy and reliability of the determined vibration source location. Furthermore, the cooperation between the sensor system 100 and the data processing unit 300 helps to improve the efficiency of vibration source location determination, saving time and effort.

[0045] Reference Figure 1 In some embodiments, the sensor system 100 includes a vibration velocity sensor 110 and a data acquisition unit 120. The vibration velocity sensor 110 is disposed at the detection position and is used to acquire the vibration velocity signal of the thermal pipeline. The data acquisition unit 120 is connected to the vibration velocity sensor 110 and is used to receive the vibration velocity signal and convert the vibration velocity signal into vibration velocity data.

[0046] Specifically, after the vibration velocity sensor 110 collects the vibration velocity signal of the heat pipe at the detection position, it transmits the vibration velocity signal to the data acquisition unit 120, and the data acquisition unit 120 converts the vibration velocity signal into vibration velocity data.

[0047] In this embodiment, the vibration velocity sensor 110 and the data acquisition device 120 work together to monitor the vibration of the thermal pipeline in real time. The data acquisition device 120 processes the data to ensure the accuracy and reliability of the vibration velocity data and avoid information distortion. In addition, the data acquisition card can record and store the vibration velocity data to monitor the vibration of the thermal pipeline over a long period of time, providing data support for subsequent analysis and comparison.

[0048] Reference Figure 1 and Figure 2 In some embodiments, the vibration velocity sensing element 110 at each detection position includes at least two vibration velocity sensors, and the detection directions of each vibration velocity sensor are not consistent.

[0049] By setting at least two vibration velocity sensors at each detection position, more comprehensive vibration information can be obtained at the detection position.

[0050] Specifically, taking three vibration velocity sensors at each detection position as an example, the first vibration velocity sensor acquires the vibration velocity signal of the detection position in the first direction, the second vibration velocity sensor acquires the vibration velocity signal of the detection position in the second direction, and the third vibration velocity sensor acquires the vibration velocity signal of the detection position in the third direction. The first direction, the second direction, and the third direction can be mutually perpendicular directions. If the first direction is the length direction of the thermal pipe and the first direction is the X-axis direction in the three-dimensional coordinate system, then the second direction is the Y-axis direction and the third direction is the Z-axis direction, or the second direction is the Z-axis direction and the third direction is the Y-axis direction.

[0051] In this embodiment, by using at least two vibration velocity sensors to acquire vibration velocity signals in different directions at the same detection position, it helps to ensure the comprehensiveness of data acquisition, thereby facilitating the data processing unit 300 to quickly determine the location of the vibration source.

[0052] Reference Figure 1 In some embodiments, the data acquisition device 120 includes a data acquisition card, the input end of which is connected to the vibration velocity sensor 110 via a first signal transmission line 122.

[0053] Among them, the data acquisition card is a device used to convert analog signals into digital signals. The first signal transmission line 122 is a BNC connector signal transmission line. The BNC connector signal transmission line is a common signal transmission line used to connect the data acquisition card and the sensor. The BNC connector signal transmission line connection has good anti-interference and stability, which is beneficial to signal acquisition and ensuring data accuracy.

[0054] Specifically, the data acquisition card has multiple input terminals, each of which is connected to the output terminal of the vibration velocity sensor at the detection position to simultaneously acquire the vibration velocity signals of each vibration velocity sensor.

[0055] Reference Figure 2 and Figure 3 In some embodiments, the fixing component 200 includes a mounting base 210 and a fastener 220. The mounting base 210 is used to receive and detachably connect to the vibration velocity sensor 110. The fastener 220 is used to mount the mounting base 210 on the outer peripheral wall of the heat pipe.

[0056] The mounting base 210 is designed to be detachably connected to the vibration velocity sensor, making it easy for operators to install and remove the vibration velocity sensor according to usage requirements. The mounting base 210 is detachably connected to the thermal pipeline through the fastener 220, making it easy for operators to adjust the position of the mounting base 210 at any time according to the setting of the detection position.

[0057] Specifically, after the operators determine the detection position, the mounting base 210 is fixed to the outer peripheral wall of the heat pipe at the position corresponding to the detection position using fasteners 220. Then, the vibration velocity sensor is installed on the mounting base 210 to obtain the vibration velocity signal at the detection position.

[0058] In this embodiment, the mounting base 210 and the thermal pipeline are detachably connected by fastener 220, and the vibration velocity sensor is detachably connected to the mounting base 210. This makes it easy for operators to adjust the setting position of the vibration velocity sensor according to the setting of the detection position, and helps to improve the adaptability of the pipeline vibration detection device.

[0059] Reference Figure 3 In some embodiments, the vibration velocity sensing element 110 includes a vibration velocity sensor. The end of the vibration velocity sensor away from its own signal receiving end is provided with a threaded groove 112. The mounting base 210 is provided with a threaded rod 212, and the threaded rod 212 is threadedly connected to the threaded groove 112.

[0060] Specifically, the vibration velocity sensor can be a magnetoelectric velocity sensor, so that it can be directly fixed to the outer wall of the thermal pipe by magnetic force. The threaded rod 212 is fixedly connected to the mounting base 210. When the operator needs to install the vibration velocity sensor on the mounting base 210, it can be done by the threaded connection between the threaded rod 212 and the threaded groove 112.

[0061] In this embodiment, the cooperation between the threaded rod 212 and the threaded groove 112 facilitates quick installation and removal of the vibration velocity sensor by operators. The structure is simple and easy to operate, thereby helping to improve the efficiency of operators when installing the vibration velocity sensor.

[0062] Reference Figure 2 In some embodiments, the fastener 220 includes a clamp, and the mounting base 210 is connected to the clamp.

[0063] The inner circumferential wall of the clamp fits against the outer circumferential wall of the heating pipe, the mounting base 210 is fixedly connected to the outer circumferential wall of the clamp, and the open end of the clamp is fixed by the cooperation of bolts and nuts.

[0064] Specifically, the operator first adjusts the clamp to the appropriate position. For example, when the detection direction of one of the vibration velocity sensors on the mounting base 210 is the X-axis direction, which is the length direction of the heat pipe, it indicates that the clamp has been adjusted to the appropriate position. Then, the clamp is fixed to the outer wall of the heat pipe by the cooperation of bolts and nuts, thereby fixing the mounting base 210.

[0065] In this embodiment, the mounting base 210 is fixed by a clamp, which has a simple structure and is easy to install and disassemble, thereby helping to improve the efficiency of operators when setting up vibration velocity sensors.

[0066] Reference Figure 1 In some embodiments, the data processing unit 300 includes a computer connected to the output of a data acquisition card via a second signal transmission line 124, and the computer stores a computer program for processing vibration velocity data.

[0067] The computer can be a portable computer, and the second signal transmission line 124 is a USB connector signal transmission line. The USB connector signal transmission line enables data transmission and communication between the data acquisition device and the computer, and it can also power the corresponding device via the USB interface, allowing the device to operate normally, thereby reducing the device's power requirements and making the device more portable and flexible. The computer program used to process the vibration velocity data can be specialized analysis software for processing vibration velocity data from thermal pipelines.

[0068] Specifically, after the portable computer is connected to the data acquisition card via a USB connector signal transmission cable, it can provide power to the data acquisition card and vibration velocity sensor to ensure that the data acquisition card and vibration velocity sensor can work normally during the detection process.

[0069] In some embodiments, the vibration velocity sensor 110 includes a signal amplifier.

[0070] Among them, a signal amplifier is a device that can enhance or amplify the sensed signal so that the sensor can better receive the sensed signal.

[0071] Specifically, in order to better capture and record vibration velocity information, a signal amplifier is set inside the vibration velocity sensor. This can both enhance the vibration velocity signal received by the vibration velocity sensor and reduce external interference signals, thereby improving the anti-interference and stability of the detection process.

[0072] In a detailed embodiment, refer to Figure 4 , Figure 4 This diagram illustrates an applicable scenario for vibration detection of the main steam pipeline in a 660MW thermal power unit at a power plant. This unit has experienced excessive vibration in its main steam pipeline since its long-term operation, and the vibration has gradually worsened over time. Following a major overhaul of the unit, an experimental plan was developed to conduct online measurement and analysis of the main steam pipeline vibration. The specific steps are as follows:

[0073] Step 1: Determine the vibration monitoring points, i.e., the detection positions, on the main steam main pipe 400 and the first main steam branch pipe 500 and the second main steam branch pipe 600 before the steam enters the main steam valve.

[0074] Step 2: Combine the on-site equipment and facilities to build a vibration signal monitoring system, connect the sensor system, connect the data acquisition card, and start the portable computer to ensure that the computer has sufficient power. The sensor system includes a vibration velocity sensor.

[0075] Step 3: Start the developed signal acquisition and analysis software, begin testing the data transmission channel, and confirm that the power supply to each device is normal and the signal transmission system is communicating normally.

[0076] Step 4: In the data acquisition software interface, select the data acquisition channel, set the data acquisition frequency, set the number of samples per channel, and set the upper and lower limits of data acquisition, etc.

[0077] Step 5: Click the "Start Data Acquisition" button to record and save the test data. Record the test data at each measuring point according to different working conditions, and then analyze it promptly.

[0078] The main steam header 400, the first main steam branch pipe 500, and the second main steam branch pipe 600 are all thermal pipes. Before the unit starts and the main steam pipes are not supplying steam, four detection points are determined on each of the first and second main steam branch pipes 500 and 600, respectively. Vibration velocity sensors are placed in the horizontal and vertical directions of these thermal pipes. The system's sampling rate is 20000Hz. The natural frequency of the thermal pipes is measured by striking the surface of the pipes near the measurement points with a hammer, and the measurement data is recorded. Finally, the measurement data is analyzed, and the main natural frequency range of the first main steam branch pipe 500 is found to be between 12Hz and 15Hz. Figure 5 As shown.

[0079] Reference Figures 5 to 7After the unit started up, at a load of approximately 282MW, the horizontal and vertical vibrations of the first high-pressure regulating valve 700 and the second high-pressure regulating valve 800 were measured. It was found that the vibration frequencies of the first high-pressure regulating valve 700 were mainly 14Hz and 50Hz, while the vibration frequencies of the second high-pressure regulating valve 800 were mainly 14Hz, 50Hz, and 200Hz. Furthermore, the vibration amplitudes corresponding to the 14Hz and 50Hz frequency components of the first high-pressure regulating valve 700 were larger than those of the second high-pressure regulating valve 800. Subsequently, the source of the 200Hz frequency component in the second high-pressure regulating valve 800 was located. Measurement points were placed at multiple locations on the second high-pressure regulating valve 800, and it was found that the 200Hz frequency vibration originated from the outer casing of the high-pressure regulating valve stem in front of the hydraulic actuator. Simultaneously, vertical vibration measurements were taken of the main steam header 400, the first high-pressure regulating valve 700, and the second high-pressure regulating valve 800 on the 6.9-meter platform. The results showed that the vibration frequency of the main steam header 400 was primarily 14Hz, the vibration frequencies of the first high-pressure regulating valve 700 were primarily 14Hz and 50Hz, and the vibration frequencies of the second high-pressure regulating valve 800 were primarily 14Hz, 50Hz, and 200Hz. Furthermore, the vibration amplitude corresponding to the 14Hz frequency was the largest on the main steam header 400, followed by the first high-pressure regulating valve 700, and lastly on the second high-pressure regulating valve 800. Vibration measurements of the main steam pipe 400, the first main steam branch pipe 500, and the second main steam branch pipe 600 on the 6.9-meter platform revealed that the vibration frequency of the main steam pipe 400 was primarily 14Hz, the vibration frequencies of the first main steam branch pipe 500 were primarily 14Hz and 50Hz, and the vibration frequency of the second main steam branch pipe 600 was primarily 14Hz. Furthermore, the vibration amplitude of the first main steam branch pipe 500 was greater than that of the second main steam branch pipe 600, while the vibration amplitude of the main steam pipe 400 was the smallest. Therefore, it was determined that the vibration source of the accident originated from the side of the first main steam branch pipe 500, i.e., the vibration source was located on the side of the first main steam branch pipe 500.

[0080] The pipeline vibration detection device in this application, through the cooperation of multiple sets of vibration velocity sensors and a portable computer, can promptly detect vibration phenomena in heating pipelines, diagnose the location and source of abnormal vibrations, and provide reliable data for operators as a reference, facilitating timely on-site troubleshooting. Furthermore, the portable computer eliminates the need for external power supplies to the detection equipment, aiding in on-site detection work. The multi-channel data acquisition card used provides multiple detection positions for the detection system to simultaneously perform multiple sets of test data, thereby improving the efficiency of test measurement, i.e., the efficiency of pipeline vibration detection. Additionally, it ensures the comparability of the acquired test data.

[0081] Secondly, one embodiment of this application provides a pipeline vibration detection method, applied to any of the pipeline vibration detection devices provided in the first aspect above. The pipeline vibration detection method includes the following steps:

[0082] Detection positions are set at different locations on the heat pipe, and the sensor system 100 is installed on the detection positions on the heat pipe by means of the fixing component 200;

[0083] The data processing unit 300 is connected to the sensor system 100 to obtain the vibration velocity data collected by the sensor system 100, and the vibration velocity is processed by the data processing unit 300 to determine the location of the vibration source on the thermal pipeline.

[0084] Specifically, operators first determine the detection location based on the inspection requirements of the heating pipeline; then, using clamps, bolts, and nuts, they fix the mounting base 210 to the detection location on the outer circumference of the heating pipeline; next, according to the measurement requirements, they thread the vibration velocity sensor onto the mounting base 210; then, they connect the data acquisition card to a portable computer via a USB connector signal transmission line, thereby providing power to the data acquisition card and the vibration velocity sensor, so that the data acquisition card can convert the acquired vibration velocity signal into vibration velocity data and transmit it to the portable computer; the portable computer then processes the vibration velocity data according to the pre-stored computer program to determine the location of the vibration source in the heating pipeline.

[0085] The pipeline vibration detection method in this application, after incorporating the pipeline vibration detection device of the first aspect mentioned above, also correspondingly improves the efficiency and reliability of pipeline vibration detection.

[0086] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pipeline vibration detection device, suitable for thermal pipelines, characterized in that, The pipeline vibration detection device includes: A sensor system is installed on the outer peripheral wall of the heat pipe, and the sensor system is used to collect vibration velocity data of the heat pipe; A fixing component is used to install the sensor system on a preset detection position on the outer peripheral wall of the thermal pipe; A data processing unit, connected to the sensor system, is used to receive the vibration velocity data and process the vibration velocity data to determine the location of the vibration source on the thermal pipe.

2. The pipeline vibration detection device according to claim 1, characterized in that, The sensor system includes: A vibration velocity sensor is disposed at the detection position, and the vibration velocity sensor is used to collect the vibration velocity signal of the thermal pipeline; A data acquisition device is connected to the vibration velocity sensor. The data acquisition device is used to receive the vibration velocity signal and convert the vibration velocity signal into vibration velocity data.

3. The pipeline vibration detection device according to claim 2, characterized in that, Each of the vibration velocity sensing elements at the detection position includes at least two vibration velocity sensors.

4. The pipeline vibration detection device according to claim 2, characterized in that, The data acquisition device includes a data acquisition card, and the input end of the data acquisition card is connected to the vibration velocity sensor via a first signal transmission line.

5. The pipeline vibration detection device according to claim 2, characterized in that, The fixing component includes: Mounting base for receiving the vibration velocity sensor and being detachably connected to the vibration velocity sensor; Fasteners for mounting the mounting base on the outer peripheral wall of the thermal pipe.

6. The pipeline vibration detection device according to claim 5, characterized in that, The vibration velocity sensing element includes a vibration velocity sensor. The end of the vibration velocity sensor away from its own signal receiving end is provided with a threaded groove. The mounting base is provided with a threaded rod, and the threaded rod is threadedly connected to the threaded groove.

7. The pipeline vibration detection device according to claim 5, characterized in that, The fastener includes a clamp, and the mounting base is connected to the clamp.

8. The pipeline vibration detection device according to claim 1, characterized in that, The data processing unit includes a computer, which is connected to the output terminal of the data acquisition unit via a second signal transmission line. The computer stores a computer program for processing the vibration velocity data.

9. The pipeline vibration detection device according to claim 1, characterized in that, The vibration velocity sensor contains a signal amplifier.

10. A method for detecting pipeline vibration, applicable to the pipeline vibration detection device according to any one of claims 1-9, characterized in that, The pipeline vibration detection method includes the following steps: Detection points are set at different locations on the thermal pipeline, and the sensor system is installed at the detection points on the thermal pipeline by means of a fixing component; The data processing unit is connected to the sensor system to obtain the vibration velocity data collected by the sensor system, and the vibration velocity is processed by the data processing unit to determine the location of the vibration source on the thermal pipeline.

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