Pipeline vibration detection device

Abstract

The utility model relates to a pipeline vibration detection device which 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, and in particular to a pipeline vibration detection device. Background Art

[0002] At present, my country's power supply system mainly relies on coal-fired power generation in thermal power plants. The thermal pipelines in thermal power plants are pipeline systems used to transport working fluids (water vapor, hot oil, etc.). The thermal pipelines are connected between the main boiler equipment and the main turbine equipment.

[0003] In related technologies, thermal power units participate in the peak load regulation of the power grid, causing their operating parameters to fluctuate over a long period of time. Improper operation and unstable flow of the working fluid within the thermal pipeline can easily cause severe vibrations in the thermal pipeline. Alternatively, improper equipment installation after maintenance, or valves stuck in the normally open or normally closed state for extended periods of time, can also cause severe vibrations in the thermal pipeline. In these cases, operators will follow the path of the thermal pipeline to identify the source of the vibration. However, this traditional method of manually troubleshooting the source of thermal pipeline vibrations is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] Based on this, it is necessary to provide a pipeline vibration detection device to address the problem that in related technologies, it is time-consuming, labor-intensive and inefficient to check the vibration source of thermal pipelines by relying on manual experience.

[0005] The present application provides a pipeline vibration detection device suitable for thermal pipelines, the pipeline vibration detection device comprising:

[0006] A sensor system is provided on the outer wall of the thermal pipeline, and the sensor system is used to collect vibration velocity data of the thermal pipeline;

[0007] A fixing component for mounting the sensor system on a preset detection position on the outer wall of the thermal pipeline;

[0008] The data processing unit is connected to the sensor system and is used for receiving and processing the vibration velocity data to determine the vibration source position on the thermal pipeline.

[0009] In one embodiment, the sensor system includes:

[0010] The vibration speed sensor is set at the detection position and is used to collect the vibration speed signal of the thermal pipeline;

[0011] The data acquisition component is connected to the vibration speed sensing component and is used for receiving the vibration speed signal and converting the vibration speed signal into vibration speed data.

[0012] In one embodiment, the vibration velocity sensing element at each detection position includes at least two vibration velocity sensors.

[0013] In one embodiment, the data acquisition component includes a data acquisition card, and an input end of the data acquisition card is connected to the vibration speed sensing component through a first signal transmission line.

[0014] In one embodiment, the fixing assembly includes:

[0015] A mounting seat is used to receive the vibration speed sensing component and is detachably connected to the vibration speed sensing component;

[0016] The fastener is used to install the mounting base on the outer wall of the thermal pipe.

[0017] In one embodiment, the vibration velocity sensing component includes a vibration velocity sensor, a thread groove is provided at one end of the vibration velocity sensor away from its own signal receiving end, and a threaded rod is provided on the mounting seat, and the threaded rod is threadedly connected to the thread groove.

[0018] In one embodiment, the fastener includes a clamp, and the mounting seat is connected to the clamp.

[0019] In one embodiment, a lifting fitting is provided on the mounting seat.

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

[0021] In one embodiment, a signal amplifier is provided in the vibration velocity sensing element.

[0022] The above-mentioned pipeline vibration detection device includes a sensor system, a fixed component and a data processing component, wherein the sensor system is arranged on the outer peripheral wall of the thermal pipeline, and the sensor system is used to collect the vibration velocity data of the thermal pipeline; the fixed component is used to install the sensor system on a preset detection position on the outer peripheral wall of the thermal pipeline; the data processing component is connected to the sensor system, and the data processing component is used to receive the vibration velocity data and process the vibration velocity data to determine the vibration source position on the thermal pipeline. The pipeline vibration detection device of the present application can realize the detachable connection between the sensor system and the thermal pipeline through the fixed component, so as to facilitate the operator to install the sensor system on the preset detection position to obtain the vibration velocity data of the thermal pipeline; the obtained vibration velocity data is processed by the data processing component, which helps to improve the accuracy and reliability of the determined vibration source position, and the cooperation between the sensor system and the data processing component helps to improve the efficiency of determining the vibration source position, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Schematic diagram of the structure of a pipeline vibration detection device in some embodiments of the present application;

[0025] Figure 2 This is a structural diagram illustrating the connection relationship between the mounting base, the fastener, and the thermal pipe in some embodiments of the present application;

[0026] Figure 3 This is a structural diagram illustrating the connection relationship between the mounting base and the vibration velocity sensing element in some embodiments of the present application;

[0027] Figure 4 This is a schematic diagram of an applicable scenario for reflecting an example of vibration detection of a main steam pipe of a 660MW thermal power unit in a power plant in one embodiment of the present application;

[0028] Figure 5 It is used to reflect Figure 4 The vibration signal spectrum analysis diagram of the first high-pressure regulating valve, main steam main pipeline, and second high-pressure regulating valve;

[0029] Figure 6 It is used to reflect Figure 4 Time domain analysis diagram of vibration signals of the first main steam branch pipe, the main steam mother pipe and the second main steam branch pipe;

[0030] Figure 7 It is used to reflect Figure 4 Vibration signal spectrum analysis diagram of the first main steam branch pipe, main steam mother pipe and second main steam branch pipe.

[0031] Description of Figure Numbers:

[0032] 100. Sensor system; 110. Vibration velocity sensing component; 112. Threaded groove; 120. Data acquisition component; 122. First signal transmission line; 124. Second signal transmission line; 200. Fixing assembly; 210. Mounting seat; 212. Threaded rod; 214. Lifting fitting; 216. Through hole; 220. Fastener; 300. Data processing component; 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 DESCRIPTION

[0033] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 therefore cannot be understood as a limitation to the present application.

[0035] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0036] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0037] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate 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 implementation methods.

[0039] In order to solve the problem of time-consuming, labor-intensive and inefficient investigation of vibration sources of thermal pipes in related technologies by relying on manual experience, Figure 1 An embodiment of the present application provides a pipeline vibration detection device, including a sensor system 100, a fixing assembly 200, and a data processing unit 300. The sensor system 100 is disposed on the outer wall of a thermal pipeline and is used to collect vibration velocity data of the thermal pipeline. The fixing assembly 200 is used to install the sensor system 100 at a preset detection position on the outer wall of the thermal pipeline. The data processing unit 300 is connected to the sensor system 100 and is used to receive and process the vibration velocity data to determine the location of the vibration source on the thermal pipeline.

[0040] Specifically, the operator first determines the detection position on the outer wall of the thermal pipeline, and then installs the sensor system 100 on the detection position of the thermal pipeline 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 component 300 for processing, so that the data acquisition can determine the vibration source position on the thermal pipeline based on the vibration data.

[0041] In this embodiment, the sensor system 100 is detachably connected to the thermal pipe by the fixing component 200, so that the operator can conveniently install the sensor system 100 at a preset detection position to obtain the vibration velocity data of the thermal pipe; the obtained vibration velocity data is processed by the data processing component 300, which helps to improve the accuracy and reliability of the determined vibration source position, and the cooperation between the sensor system 100 and the data processing component 300 helps to improve the efficiency of determining the vibration source position, saving time and effort.

[0042] Reference Figure 1 In some embodiments, the sensor system 100 includes a vibration velocity sensing element 110 and a data acquisition element 120. The vibration velocity sensing element 110 is set at the detection position and is used to collect the vibration velocity signal of the thermal pipeline; the data acquisition element 120 is connected to the vibration velocity sensing element 110 and is used to receive the vibration velocity signal and convert the vibration velocity signal into vibration velocity data.

[0043] Specifically, after the vibration velocity sensing component 110 collects the vibration velocity signal of the thermal pipeline at the detection position, the vibration velocity signal is transmitted to the data acquisition component 120, and the data acquisition component 120 converts the vibration velocity signal into vibration velocity data.

[0044] In this embodiment, the vibration velocity sensing element 110 and the data acquisition element 120 cooperate to monitor the vibration of the thermal pipeline in real time. After processing by the data acquisition element 120, the accuracy and reliability of the vibration velocity data can be guaranteed to avoid information distortion. In addition, the data acquisition card can record and store the vibration velocity data to enable long-term monitoring of the vibration of the thermal pipeline and provide data support for subsequent analysis and comparison.

[0045] Reference Figure 1 and Figure 2 In some embodiments, the vibration velocity sensing member 110 at each detection position includes at least two vibration velocity sensors, and the detection directions of the vibration velocity sensors are inconsistent.

[0046] Among them, at least two vibration velocity sensors are provided at each detection position, so that more comprehensive vibration information at the detection position can be obtained.

[0047] Specifically, taking the example of three vibration velocity sensors on each detection position, 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 directions perpendicular to each other. 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, 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.

[0048] In this embodiment, the vibration velocity signals in different directions at the same detection position are acquired by at least two vibration velocity sensors, which helps to ensure the comprehensiveness of data collection, thereby facilitating the data processing component 300 to quickly determine the position of the vibration source.

[0049] Reference Figure 1 In some embodiments, the data acquisition component 120 includes a data acquisition card, and an input end of the data acquisition card is connected to the vibration speed sensing component 110 through a first signal transmission line 122 .

[0050] Among them, the data acquisition card is a device used to convert analog signals into digital signals, and the first signal transmission line 122 is a BNC connector signal transmission line. The BNC connector signal transmission line is a signal transmission line commonly 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 conducive to signal acquisition and ensuring data accuracy.

[0051] Specifically, the data acquisition card has multiple input terminals, each of which is connected one by one to the output terminal of the vibration velocity sensor at the detection position, so as to simultaneously acquire the vibration velocity signals of each vibration velocity sensor.

[0052] Reference Figure 2 and Figure 3 In some embodiments, the fixing assembly 200 includes a mounting base 210 and a fastener 220. The mounting base 210 is used to receive the vibration velocity sensing component 110 and is detachably connected to the vibration velocity sensing component 110; the fastener 220 is used to install the mounting base 210 on the outer wall of the thermal pipe.

[0053] Among them, the mounting base 210 is set to be detachably connected to the vibration velocity sensor, which makes it convenient for the operator to install and remove the vibration velocity sensor according to usage requirements; and the mounting base 210 is detachably connected to the thermal pipe through the fastener 220, which makes it convenient for the operator to adjust the position of the mounting base 210 at any time according to the setting of the detection position.

[0054] Specifically, after the operator determines the detection position, the mounting base 210 is fixed to the position corresponding to the detection position on the outer wall of the thermal pipe through the fastener 220, and then the vibration velocity sensor is installed on the mounting base 210, thereby obtaining the vibration velocity signal at the detection position.

[0055] In this embodiment, the mounting base 210 is detachably connected to the thermal pipe by the fastener 220, and the vibration velocity sensor is set to be detachably connected to the mounting base 210, which makes it convenient for the operator 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.

[0056] Reference Figure 3 In some embodiments, the vibration velocity sensing element 110 includes a vibration velocity sensor, and a thread groove 112 is provided at one end of the vibration velocity sensor away from its own signal receiving end. A threaded rod 212 is provided on the mounting base 210, and the threaded rod 212 is threadedly connected to the thread groove 112.

[0057] Specifically, the vibration velocity sensor can be a magnetoelectric velocity sensor, allowing it to be directly fixed to the outer wall of the thermal pipe via magnetic force. A 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, the threaded rod 212 is threadedly engaged with the thread groove 112.

[0058] In this embodiment, the cooperation between the threaded rod 212 and the threaded groove 112 facilitates the operator to quickly install and remove the vibration velocity sensor. The structure is simple and easy to operate, which helps to improve the efficiency of the operator in deploying the vibration velocity sensor.

[0059] Reference Figure 2 In some embodiments, the fastener 220 includes a clamp, and the mounting base 210 is connected to the clamp.

[0060] The inner circumferential wall of the clamp fits against the outer circumferential wall of the thermal pipe, the mounting seat 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.

[0061] Specifically, the operator first adjusts the clamp to a suitable position. For example, when the detection direction of one of the vibration velocity sensors on the mounting base 210 is in the X-axis direction, that is, the length direction of the thermal pipe, it indicates that the clamp has been adjusted to a suitable position. Then, the clamp is fixed to the outer wall of the thermal pipe by the combination of bolts and nuts, thereby fixing the mounting base 210.

[0062] In this embodiment, the mounting base 210 is fixed by a clamp, which has a simple structure and is easy to assemble and disassemble, thereby helping to improve the efficiency of operators in arranging the vibration velocity sensor.

[0063] Reference Figure 1 and Figure 2 In some embodiments, a lifting fitting 214 is provided on the mounting base 210 , and the lifting fitting 214 is used to assist in adjusting the installation position of the mounting base 210 .

[0064] The hoisting fitting 214 includes a fixing block fixedly connected to the top wall of the mounting seat 210 , and a through hole 216 is formed through the side wall of the fixing plate.

[0065] Specifically, when a thermal pipeline needs to be hoisted and transferred, multiple fixed blocks located on the same thermal pipeline to be measured can be connected in series in sequence through supporting components such as support rods, and then external force can be applied to the support rods to achieve the transfer of the thermal pipeline.

[0066] Reference Figure 1 In some embodiments, the data processing unit 300 includes a computer, which is connected to the output end of the data acquisition card via the second signal transmission line 124, and 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 can realize data transmission and communication between the data acquisition device and the computer device. The USB connector signal transmission line can also power the corresponding device through the USB interface, enabling the device to operate normally, thereby reducing the power supply demand of the device and making the device more portable and flexible. The computer program used to process the vibration velocity data can be analysis software specifically used to process the vibration velocity data of thermal pipelines.

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

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

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

[0071] Specifically, in order to better capture and record vibration velocity information, a signal amplifier is set in the vibration velocity sensor, which can not only enhance the vibration velocity signal received by the vibration velocity sensor, but also reduce external interference signals, thereby improving the anti-interference and stability of the detection process.

[0072] In a detailed embodiment, referring to Figure 4 , Figure 4 This diagram illustrates a scenario for vibration monitoring of the main steam pipe of a 660MW thermal power unit at a power plant. Due to the unit's long-term operation, the main steam pipe vibration has been experiencing excessive vibration, which has gradually intensified over time. Following an overhaul of the unit, a test plan was developed to conduct online measurement and analysis of the main steam pipe vibration. The specific steps are as follows:

[0073] Step 1: Determine the vibration monitoring points, i.e., 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 on-site equipment and facilities to build a vibration signal monitoring system, connect the sensor system, connect the data acquisition card, start the portable computer and 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 and begin testing the data transmission channel to confirm that the power supply of each device is normal and the signal transmission system communication is normal.

[0076] Step 4: Select the data acquisition channel in the data acquisition software interface, set the data acquisition frequency, set the number of samples per channel, data acquisition upper and lower limits and other parameters.

[0077] Step 5: Click the Start Collection button to record and save the test data. According to different working conditions, record the test data of each measuring point and then conduct timely analysis.

[0078] Among them, the main steam mother pipe 400, the first main steam branch pipe 500 and the second main steam branch pipe 600 are all thermal pipes. Before the unit is started, when there is no steam supply to the main steam pipe, four detection positions are determined on the first main steam branch pipe 500 and the second main steam branch pipe 600 respectively, and vibration velocity sensors are arranged in the horizontal and vertical directions of the above thermal pipes. The sampling rate of the system is 20000Hz. A hammer is used to knock on the surface of the thermal pipe near the measuring point to measure the natural frequency of the thermal pipe and record the measurement data. Finally, the measurement data is analyzed to obtain that the main natural frequency range of the first main steam branch pipe 500 is between 12Hz-15Hz, as shown in FIG. Figure 5 shown.

[0079] Reference Figures 5 to 7 After the unit was started, at a load of approximately 282MW, the horizontal and vertical vibrations of the unit's first and second high-pressure regulating valves (700, 800) were measured. It was found that the vibration frequencies of the first high-pressure regulating valve (700) were primarily 14Hz and 50Hz, while the vibration frequencies of the second high-pressure regulating valve (800) were primarily 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 greater than those of the second high-pressure regulating valve (800). Subsequently, the source of the 200Hz frequency component of the second high-pressure regulating valve (800) was searched for. By placing measurement points (i.e., detection points) at multiple locations on the second high-pressure regulating valve (800), it was discovered that the 200Hz frequency vibration was generated by the housing of the high-pressure regulating valve stem in front of the hydraulic motor. At the same time, vertical vibration measurements of the 6.9-meter platform's main steam main pipe 400, the first high-pressure regulating valve 700, and the second high-pressure regulating valve 800 were conducted. The vibration frequencies of the main steam main pipe 400 were primarily 14 Hz, those of the first high-pressure regulating valve 700 were primarily 14 Hz and 50 Hz, and those of the second high-pressure regulating valve 800 were primarily 14 Hz, 50 Hz, and 200 Hz. The vibration amplitude corresponding to the 14 Hz frequency was greatest on the main steam main pipe 400, followed by the first high-pressure regulating valve 700, and finally at the second high-pressure regulating valve 800. Through vibration measurements of the 6.9-meter platform main steam main pipe 400, the first main steam branch pipe 500, and the second main steam branch pipe 600, it was found that the vibration frequency of the main steam main pipe 400 was mainly 14Hz, the vibration frequency of the first main steam branch pipe 500 was mainly 14Hz and 50Hz, and the vibration frequency of the second main steam branch pipe 600 was mainly 14Hz; and the vibration amplitude of the first main steam branch pipe 500 was greater than the vibration amplitude of the second main steam branch pipe 600, and the vibration amplitude of the main steam main pipe 400 was the smallest. Therefore, it was judged that the vibration source of the accident came from the side of the first main steam branch pipe 500, that is, the vibration source was located on the side of the first main steam branch pipe 500.

[0080] The pipeline vibration detection device in the present application, through the cooperation of multiple groups of vibration velocity sensors and a portable computer, can promptly detect vibration phenomena occurring in thermal pipelines to diagnose the location and source of abnormal vibrations in the thermal pipelines, thereby providing reliable data as a reference for operating personnel, which is conducive to timely finding the cause of the fault on site; and through the portable computer, there is no need for an external power supply to power each detection equipment, which is helpful for on-site detection work; and the multi-channel data acquisition card used can provide the detection system with multiple detection positions to carry out detection work on multiple groups of test data at the same time, thereby improving the efficiency of test measurement work, that is, the efficiency of pipeline vibration detection, and also making the acquired test data comparable.

[0081] In the description of this specification, reference to the terms "some embodiments" or "other embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0083] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall 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 comprises: a sensor system disposed on the outer peripheral wall of the thermal pipeline, the sensor system being used to collect vibration velocity data of the thermal pipeline, the sensor system comprising a vibration velocity sensing element and a data acquisition element, the vibration velocity sensing element being disposed at a predetermined detection position on the outer peripheral wall of the thermal pipeline, the vibration velocity sensing element being used to collect vibration velocity signals of the thermal pipeline, the vibration velocity sensing element comprising a vibration velocity sensor; the data acquisition element being connected to the vibration velocity sensing element, the data acquisition element comprising a data acquisition card having a plurality of input terminals, each input terminal of the data acquisition card being connected one-to-one with an output terminal of the vibration velocity sensor to simultaneously obtain vibration velocity signals from each of the vibration velocity sensors, the data acquisition element being used to receive the vibration velocity signals and convert them into the vibration velocity data; a fixing assembly for mounting the sensor system on the detection position, the fixing assembly comprising a mounting base and a fastener, the mounting base being used to receive and detachably connect the vibration velocity sensing element, and the fastener being used to mount the mounting base on the outer peripheral wall of the thermal pipe; A data processing component is connected to the sensor system, and is used to receive the vibration velocity data and process the vibration data to determine the vibration source position on the thermal pipeline.

2. The pipeline vibration detection device according to claim 1, characterized in that: The vibration velocity sensing component at each detection position includes at least two vibration velocity sensors.

3. The pipeline vibration detection device according to claim 1, characterized in that: The input end of the data acquisition card is connected to the vibration speed sensing component through a first signal transmission line.

4. The pipeline vibration detection device according to claim 1, characterized in that: The vibration velocity sensing component includes a vibration velocity sensor. A threaded groove is provided at one end of the vibration velocity sensor away from its own signal receiving end. A threaded rod is provided on the mounting seat. The threaded rod is threadedly connected to the threaded groove.

5. The pipeline vibration detection device according to claim 1, characterized in that: The fastener includes a clamp, and the mounting seat is connected to the clamp.

6. The pipeline vibration detection device according to claim 1, characterized in that: The mounting seat is provided with a hoisting fitting.

7. The pipeline vibration detection device according to claim 2, characterized in that: The data processing component includes a computer, which is connected to the output end of the data acquisition component via a second signal transmission line. The computer stores a computer program for processing the vibration velocity data.

8. The pipeline vibration detection device according to claim 1, characterized in that: A signal amplifier is provided in the vibration speed sensing component.

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