Pipeline vibration measuring device

Abstract

The utility model relates to the field of nuclear power, in particular to a pipeline vibration measuring device. The pipeline vibration measuring device comprises a mounting base, the mounting base and a pipeline are fixed through a pipe hoop, the top and the side face of the mounting base are provided with multidirectional screw holes, and a high-temperature acceleration sensor is fixed to the surface of the mounting base through screws; the high-temperature acceleration sensor is connected with the data collector through a cable, and the cable is bound with the mounting seat; a spring coil is arranged at the interface of the high-temperature acceleration sensor and the cable; and the data collector is connected with the computer. The device is suitable for pipeline vibration measurement under high temperature and high amplitude, and is firm in structure, convenient to assemble and disassemble, small in temperature influence and high in accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power field especially relates to a pipeline vibration measuring device. BACKGROUND

[0002] Traditional acceleration sensor installation methods mainly include screw installation, magnetic base installation, adhesive bonding installation and probe installation.

[0003] When screw installation is adopted, the installation resonance frequency and the maximum bearing acceleration value are the largest, but it is required to reserve installation holes on the test piece, and it cannot be used for test pieces that do not allow installation holes, and the position of the measurement point is fixed due to the position of the installation hole, and cannot be properly adjusted according to the measurement environment requirements, so this installation method lacks a certain flexibility and is not suitable for high-pressure measurement environments on the surface of non-destructive structures. The magnetic base installation method is generally used in objects that are not suitable for drilling installation screw holes or bonding sensors, and is suitable for vibration measurement of low-frequency, small acceleration amplitude and low-temperature objects. This installation method is quick and simple, the installation resonance frequency and the bearing acceleration value are slightly lower, and it is required that the surface of the measured object is a flat steel structure to provide magnetic force to fix the sensor, but the magnetic base will demagnetize in a high-temperature environment. The adhesive bonding installation method has the advantages of large installation resonance frequency, large bearing acceleration value, no requirement for the bonding position of the sensor and the material of the bonding position; on the other hand, the adhesive bonding installation method has strict requirements for the installation process, and it is easy to cause the sensor to fall off during vibration measurement due to poor installation process, resonance, sudden increase in acceleration value and high-temperature environment, because the adhesive has insufficient strength. When the measurement surface is small and the above-mentioned reliable installation methods cannot be used, or when rapid inspection of equipment is required, a handheld probe installation method can be used. However, the probe installation method has low installation resonance frequency and small bearing acceleration value, and is only suitable for measurement below 600Hz, so this installation method is rarely used except for special needs.

[0004] The above-mentioned four commonly used sensor installation methods have their own characteristics, and need to be selected and used according to the actual vibration measurement environment and measurement requirements, but they all lack a certain adaptability when dealing with complex vibration measurement environments of nuclear power plant pipelines. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a pipeline vibration measuring device that is suitable for pipeline vibration measurement under high temperature and high amplitude, has a reliable structure, is easy to assemble and disassemble, is less affected by temperature and has high accuracy.

[0006] The utility model provides a pipeline vibration measuring device, which comprises:

[0007] a mounting seat,

[0008] The mounting base and the pipeline are fixed by a pipe clamp,

[0009] The top and side of the mounting base are provided with multi-directional screw holes, and the high-temperature acceleration sensor is fixed on the surface of the mounting base by screws;

[0010] The high-temperature acceleration sensor is connected with the data collector by a cable, and the cable is bound with the mounting base;

[0011] A spring coil is arranged at the cable interface of the high-temperature acceleration sensor;

[0012] The data collector is connected with a computer.

[0013] In an embodiment of the utility model, the bottom of the mounting base is a circular arc surface, facilitating the close contact between the mounting base and the pipeline.

[0014] In an embodiment of the utility model, a horizontal rectangular through groove is arranged on the side of the mounting base, and a pipe clamp is fixed in the groove, realizing the close connection between the mounting base and the pipeline.

[0015] In an embodiment of the utility model, the screw holes are coated with high-temperature adhesive glue.

[0016] In an embodiment of the utility model, the cable is fixed on the mounting base by a cable tie.

[0017] In an embodiment of the utility model, the mounting base is a magnetic one-way mounting base.

[0018] Compared with the prior art, the pipeline vibration measuring device of the utility model overcomes the problem that the traditional bolt connection method needs to drill bolt holes in advance on the surface of the pipeline at the measurement position, greatly improves the installation efficiency of the measuring device, greatly simplifies the installation process, has better connection strength, and improves the ability to cope with abnormal situations such as resonance or sudden increase of acceleration value during measurement. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure of the pipeline vibration measuring device is shown in the structure diagram.

[0020] Figure 2 The actual operation process of the pipeline vibration measuring device is shown.

[0021] In the figure, 1 is a mounting base, 2 is a pipe clamp, 3 is a high-temperature acceleration sensor, 4 is a screw, 5 is a cable, 6 is a spring coil, 7 is a data collector, 8 is a pipeline, 9 is a computer, 10 is a cable tie. DETAILED DESCRIPTION

[0022] For further understanding of the present application, the implementation scheme of the present application will be described in conjunction with the embodiments below, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present application, and are not limitations of the present application.

[0023] The embodiment of the present application discloses a pipeline vibration measuring device, as shown in the figure, comprising: Figure 1

[0024] The mounting seat 1 is preferably a magnetic one-way mounting base, which avoids the defect of high-temperature demagnetization of the magnetic seat and ensures that the whole measuring device can reliably operate in a wide environmental temperature range.

[0025] The mounting seat 1 and the pipeline 8 are fixed by using a pipe clamp 2, and the bottom of the mounting seat 1 is a circular arc surface, which facilitates the close contact of the mounting seat with the pipeline 8.

[0026] Specifically, the mounting seat 1 is provided with a horizontal rectangular through groove on the side surface, and the pipe clamp 2 is fixed in the groove, so as to realize the close connection of the mounting seat 1 and the pipeline 4.

[0027] The top and side surface of the mounting seat 1 are provided with multi-directional screw holes, and the screw holes are coated with high-temperature adhesive glue, so as to prevent the loosening of the screwed screw 4 when the vibration is large.

[0028] The high-temperature acceleration sensor 3 is fixed on the surface of the mounting seat 1 through the screw 4, so as to realize the multi-directional free and fastening installation of the high-temperature acceleration sensor 3 without damaging the structure of the pipeline 8.

[0029] The high-temperature acceleration sensor 3 is connected with the data collector 7 through the cable 5, and the cable 5 is bound with the mounting seat 1 through the cable tie 10, so as to prevent the acceleration signal from drifting caused by the pulling of the cable.

[0030] A spring coil 6 is arranged at the interface between the high-temperature acceleration sensor 3 and the cable 5, so as to increase the stability of the cable joint.

[0031] The data collector 7 is connected with the computer 9.

[0032] For further understanding of the present application, the pipeline vibration measuring device provided by the present application will be described in detail in conjunction with the embodiments below, and the protection scope of the present application is not limited by the following embodiments.

[0033] Embodiment 1

[0034] ​The structure of the mounting seat 1 is a solid cuboid, two horizontal rectangular through grooves are formed in the lower part of the mounting seat 1, so that the stainless steel pipe clamp 2 can pass through, and the fixing of the sensor mounting seat is realized by tightening the pipe clamp according to the outer diameter of the pipeline 8; the top, left and right surfaces and the front and back surfaces of the mounting seat 1 are provided with M5 screw holes, the sensor mounting screws 4 are screwed into the screw holes, and high-temperature adhesive is applied into the screw holes, so that the high-temperature acceleration sensor 3 can be fixed in close contact with the upper surface of the mounting seat 1, and the loosening of the sensor caused by excessive vibration is prevented; the bottom of the mounting seat 1 is processed into a circular arc surface, so that the mounting seat can be in close contact with the surface of the pipeline. During testing, the mounting seat 1 is tightly attached to the surface of the pipeline 8 through the arc end at the position to be measured; then the pipe clamp 2 is fastened together through the two horizontal rectangular through grooves in the lower part of the mounting seat and the pipeline; then the high-temperature acceleration sensor 3 is fixed on the mounting seat 1 through the screws 4, so that the installation of the measuring device at the measuring point of the pipeline is completed; finally, the high-temperature acceleration sensor 3 is connected with the data acquisition device 7 through the cable 5, when the high-temperature acceleration sensor 3 is connected with the cable 5, the spring coil 6 is sleeved on the joint part of the former two, so that the unstable vibration signal caused by excessive vibration, poor contact and the like of the wiring part is prevented; the data acquisition device 7 is connected with the computer 9 through the data line, so that the real-time measurement and data analysis and processing of the pipeline vibration under high temperature are realized. In addition, it should be noted that the cable 5 is fixed on the mounting seat 1 and the surface of the measured object by using adhesive tape or a strap 10, so as to prevent false signals caused by the swinging of the data line.

[0035] Figure 2 The actual operation process of the pipeline vibration measuring device is designed, the installation mode is adopted according to the vibration amplitude and reliability requirement on the spot.

[0036] The pipeline vibration measuring device has the following advantages:

[0037] (1) The mounting seat pipe clamp is adopted, the connection is reliable and firm, compared with the traditional drilling of mounting bolt holes on the surface of the pipeline, better applicability is achieved, the installation process is more simple, the influence of the installation process is smaller, the problem that the surface drilling is not allowed on the specific pipeline is solved, and the installation mode of the drilling of the bolt holes has almost the same high installation resonance frequency and measurable acceleration amplitude.

[0038] (2) The mounting seat is provided with sensor mounting screw holes in multiple directions, so that the measurement of the pipeline vibration acceleration in multiple directions is easily realized, the measurement is more efficient and accurate, and the practicability of the device is better.

[0039] (3) The device is provided with high-temperature thread glue, cable outlet spring and cable fixing, and the reliability of the device in the high vibration environment is remarkably improved.

[0040] The above embodiments are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0041] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipeline vibration measuring device, characterized in that: include: Mounting seat, The mounting base and the pipeline are fixed with a pipe clamp. The top and side of the mounting base are provided with screw holes in multiple directions, and the high-temperature acceleration sensor is fixed to the surface of the mounting base by screws; The high-temperature acceleration sensor is connected to the data collector via a cable, and the cable is bound to the mounting base; A spring coil is provided at the interface between the high temperature acceleration sensor and the cable; The data collector is connected to the computer.

2. The pipeline vibration measuring device according to claim 1, characterized in that: The bottom of the mounting seat is an arc surface, which facilitates close contact between the mounting seat and the pipeline.

3. The pipeline vibration measuring device according to claim 1, characterized in that: A horizontal rectangular through groove is provided on the side of the mounting seat, and a pipe clamp is fixed in the groove to achieve a tight connection between the mounting seat and the pipeline.

4. The pipeline vibration measuring device according to claim 1, characterized in that: The screw holes are coated with high-temperature adhesive.

5. The pipeline vibration measuring device according to claim 1, characterized in that: The cable is fixed on the mounting seat by a cable tie.

6. The pipeline vibration measuring device according to claim 1, characterized in that: The mounting base is a magnetic one-way mounting base.

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