CN219178717U

CN219178717U - Nuclear power station high temperature high pressure small branch pipe vibration measuring device

Info

Publication number: CN219178717U
Application number: CN202223061857.3U
Authority: CN
Inventors: 冯志超; 唐兆轩; 李毅; 王海卫; 颜军明; 时朝杰; 陈立恒; 王忠楠; 许哲涵; 童嘉铭; 卓亮辉
Original assignee: Cnnc Xiapu Nuclear Power Co ltd; Zhonghe Longyuan Technology Co ltd
Current assignee: Cnnc Xiapu Nuclear Power Co ltd; Zhonghe Longyuan Technology Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-06-13
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to a vibration measuring device for a high-temperature high-pressure small branch pipe of a nuclear power station, which comprises a pipe clamp assembly, a base connecting piece, a bolt connecting piece, a vibration sensor (3) and a vibration acquisition system, wherein the pipe clamp assembly is connected with the base connecting piece through bolts; the pipe clamp assembly is fixedly connected with the base connecting piece, the base connecting piece is connected with the vibration sensor (3), and the vibration sensor (3) is connected with the vibration acquisition system. The vibration measuring device for the high-temperature high-pressure small branch pipe of the nuclear power station is suitable for all the high-temperature high-pressure small branch pipes of the nuclear power station with the pipe diameter below 50mm, and is convenient and accurate to measure the vibration characteristic parameters of the small branch pipe with the pipe diameter below 50mm under various working conditions.

Description

Nuclear power station high temperature high pressure small branch pipe vibration measuring device

Technical Field

The utility model relates to the technical field of vibration measurement of a high-temperature high-pressure small branch pipe of a nuclear power station, in particular to a vibration measurement device of the high-temperature high-pressure small branch pipe of the nuclear power station.

Background

The small branch pipes of the nuclear power station are in a high-temperature and high-pressure severe environment, and fluid impact and thermal displacement generated by high temperature during operation can bring corresponding vibration to the small branch pipes. In a nuclear power station, a few instrumentation pipes related to shutdown and power fluctuation usually exist, small branch pipes which cannot be isolated after plugging and failure under pressure are not provided, and the normal operation of a unit is threatened once the small branch pipes are broken due to vibration problems, so that vibration monitoring is carried out on the small branch pipes, and corresponding vibration characteristic parameters are particularly necessary to obtain.

At present, the conventional pipeline vibration measurement adopts threaded connection to mount the vibration sensor on the magnetic seat and magnetically attract the vibration sensor on the pipeline, or adopts gluing to stick the vibration sensor on the pipeline, or adopts a clamp to clamp the vibration sensor on the pipe clamp for collecting pipeline vibration data. However, these measurement methods have their own limitations, such as the magnetic seat magnetic attraction method is only suitable for vibration measurement of carbon steel pipes, and cannot be used for measurement of stainless steel pipes; the adhesive method has the phenomena of firm adhesion and easy falling in a high-temperature environment; the pipe hoop measurement aims at the phenomena that the disassembly and the assembly are inconvenient, the fixation is unstable and the shaking is caused for small branch pipes, particularly instrument pipes.

Disclosure of Invention

Based on the above, it is necessary to provide a device for measuring vibration of a small branch pipe with a diameter of 50mm or less for all small branch pipes with a diameter of 50mm or less for a nuclear power station, which is convenient and accurate to measure vibration characteristic parameters of the small branch pipe with a diameter of 50mm or less under various working conditions.

In order to achieve the above object, the present utility model provides the following technical solutions:

a vibration measuring device for a high-temperature high-pressure small branch pipe of a nuclear power station comprises a pipe clamp assembly, a base connecting piece, a bolt connecting piece, a vibration sensor and a vibration acquisition system; the pipe clamp assembly is fixedly connected with the base connecting piece, the base connecting piece is connected with the vibration sensor, and the vibration sensor is connected with the vibration acquisition system.

Working principle: the base connecting piece is opened through the pipe clamp assembly, the base connecting piece is clamped on the outer surface of the small branch pipe, and the vibration sensor sends a vibration measurement signal to the vibration acquisition system to acquire corresponding vibration characteristic parameters.

Further, the pipe clamp assembly includes a first clamp plate, a second clamp plate, a torsion spring, and a rotation pin; the first clamping plate and the second clamping plate are oppositely arranged and are connected through a rotating pin; the torsion spring is sleeved on the rotating pin.

Further, the base connector comprises a first base, a second base and a vibration sensor base; the first base and the second base are arc-shaped plates matched with the small branch pipes, one end of the first clamping plate, which is close to the rotating pin, is fixedly connected with the first base, and one end of the second clamping plate, which is close to the rotating pin, is fixedly connected with the second base; and the first base is fixedly connected with a vibration sensor base.

The base connecting piece is opened through the pipe clamp assembly, the base connecting piece is clamped on the outer surface of the small branch pipe, specifically, the side surfaces of the first clamping plate and the second clamping plate are held, the elastic action of the torsion spring is overcome, the first clamping plate and the second clamping plate rotate, the first base and the second base are driven to rotate until the first base and the second base are clamped on the outer surface of the small branch pipe, then the first clamping plate and the second clamping plate are loosened, and the base connecting piece is opened and fixed through the pipe clamp assembly.

In one embodiment, the first clamping plate is integrally connected with the first base near one end of the rotation pin, the second clamping plate is integrally connected with the second base near one end of the rotation pin, and the first base is integrally connected with the vibration sensor base.

Further, the pipe clamp assembly and the base connector together form a pipe clamp, and the pipe clamp is made of stainless steel materials.

Further, the bolt connecting piece comprises a bolt and a threaded through hole, the vibration sensor base and the vibration sensor are respectively provided with the threaded through hole, and the vibration sensor is installed on the vibration sensor base through the bolt.

Further, the vibration sensor is connected with the vibration acquisition system through a wire.

The beneficial technical effects of the utility model are as follows:

the vibration measuring device for the high-temperature high-pressure small branch pipe of the nuclear power station adopts mechanical fixation, the device is fixed on the small branch pipe to be measured through the pipe clamp, the device is convenient and flexible to use, the device is convenient to install at any angle on the small branch pipe, is not limited by the field environment, and has long-term stability compared with the traditional gluing mode; the vibration sensor is fixedly connected and matched on the vibration sensor base through bolts, when the small branch pipes are put into use, the vibration sensor acquires corresponding vibration, and transmits the generated electric signals to the vibration acquisition system to perform corresponding data recording and storage processing, so that vibration characteristic parameters of the small branch pipes are obtained, and the vibration characteristic parameters of all the small branch pipes with the diameters below 50mm can be measured by selecting pipe clamps with different sizes; the mass is light, the volume is small, and the device is suitable for vibration measurement of small branch pipes in various environments; simple structure, easy processing and manufacturing, convenient installation, and capability of saving equipment cost and test construction period for the test.

Drawings

FIG. 1 is a perspective view of a vibration measuring device for a high-temperature high-pressure small branch pipe of a nuclear power station;

fig. 2 is an exploded view of the vibration measuring device for the high-temperature high-pressure small branch pipe of the nuclear power station.

In the figure, 1, a pipe clamp; 2, a bolt; 3. a vibration sensor; 4. a wire; 5. a threaded through hole; 6. a small branch pipe; 11. a first clamping plate; 12. a second clamping plate; 13. a torsion spring; 14. a rotation pin; 15. a first base; 16. a second base; 17. a vibration sensor base.

Detailed Description

In the description of the present utility model, it should be understood that the terms "left", "right", "above", "below", "outside", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model is described in further detail below with reference to the drawings and examples.

Example 1

Referring to fig. 1-2, the utility model provides a vibration measuring device for a high-temperature high-pressure small branch pipe of a nuclear power station, which comprises a pipe clamp assembly, a base connecting piece, a bolt connecting piece, a vibration sensor and a vibration acquisition system; the pipe clamp assembly is fixedly connected with the base connecting piece, the base connecting piece is connected with the vibration sensor, and the vibration sensor is connected with the vibration acquisition system.

Further, the pipe clamp assembly includes a first clamping plate 11, a second clamping plate 12, a torsion spring 13, and a rotation pin 14; the first clamping plate 11 and the second clamping plate 12 are oppositely arranged and are connected through a rotating pin 14; the torsion spring 13 is sleeved on the rotating pin 14.

Further, the base connection comprises a first base 15, a second base 16 and a vibration sensor base 17; the first base 15 and the second base 16 are arc plates matched with the small branch pipe 6, one end of the first clamping plate 11 close to the rotating pin 14 is fixedly connected with the first base 15, and one end of the second clamping plate 12 close to the rotating pin 14 is fixedly connected with the second base 16; the first base 15 is fixedly connected with a vibration sensor base 17.

The base connecting piece is opened through the pipe clamp assembly, the base connecting piece is clamped on the outer surface of the small branch pipe 6, in particular, the side surfaces of the first clamping plate 11 and the second clamping plate 12 are held, the elastic force effect of the torsion spring 13 is overcome, the first clamping plate 11 and the second clamping plate 12 rotate, the first base 15 and the second base 16 are driven to rotate until the first base 15 and the second base 16 are clamped on the outer surface of the small branch pipe 6, and then the first clamping plate 11 and the second clamping plate are loosened, so that the base connecting piece is opened and fixed through the pipe clamp assembly.

Further, one end of the first clamping plate 11 close to the rotating pin 14 is integrally connected with the first base 15, one end of the second clamping plate 12 close to the rotating pin 14 is integrally connected with the second base 16, and the first base 15 is integrally connected with the vibration sensor base 17.

Further, the pipe clamp assembly and the base connection together form a pipe clamp 1, the pipe clamp 1 being made of stainless steel material.

Further, the bolt connecting piece comprises a bolt 2 and a threaded through hole 5, the threaded through holes 5 are formed in the vibration sensor base 17 and the vibration sensor 3, and the vibration sensor 3 is mounted on the vibration sensor base 17 through the bolt 2.

Further, the vibration sensor 3 is connected with a vibration acquisition system through a wire.

The vibration acquisition system is an existing vibration acquisition system. When the vibration characteristic parameters of the small branch pipe 6 are measured on site, the side surfaces of the first clamping plate 11 and the second clamping plate 12 are held, the elastic action of the torsion spring 13 is overcome, the first clamping plate 11 and the second clamping plate 12 rotate to drive the first base 15 and the second base 16 to rotate until the first base 15 and the second base 16 are clamped on the outer surface of the small branch pipe 6, and then the first clamping plate 11 and the second clamping plate are loosenedPlate 12The base connector is opened and fixed by the pipe clamp assembly. The vibration sensor 3 sends a vibration measurement signal to a vibration acquisition system to acquire corresponding vibration characteristic parameters. The position and the direction of the clamping on the outer surface of the small branch pipe 6 can be adjusted by the pipe clamp 1 according to the field environment.

The pipe clamp 1 is made of stainless steel, and the pipe clamps 1 with different types and sizes can be selected on site according to the pipe diameter of the small branch pipe 6. The pipe clamp 1 is provided with the vibration sensor base 17, so that the stability of the connection of the vibration sensor base 17 and the pipe clamp 1 is avoided. Meanwhile, the stainless steel material has strong high temperature resistance and high strength performance, and the reliability of the device can be ensured.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The device for measuring the vibration of the high-temperature high-pressure small branch pipe of the nuclear power station is characterized by comprising a pipe clamp assembly, a base connecting piece, a bolt connecting piece, a vibration sensor (3) and a vibration acquisition system; the pipe clamp assembly is fixedly connected with the base connecting piece, the base connecting piece is connected with the vibration sensor (3), and the vibration sensor (3) is connected with the vibration acquisition system.

2. The nuclear power plant high temperature and high pressure small branch pipe vibration measurement device according to claim 1, wherein the pipe clamp assembly comprises a first clamping plate (11), a second clamping plate (12), a torsion spring (13) and a rotation pin (14); the first clamping plate (11) and the second clamping plate (12) are oppositely arranged and are connected through a rotating pin (14); the torsion spring (13) is sleeved on the rotating pin (14).

3. The nuclear power plant high temperature high pressure small branch pipe vibration measurement device according to claim 2, wherein the base connection comprises a first base (15), a second base (16) and a vibration sensor base (17); the first base (15) and the second base (16) are arc-shaped plates matched with the small branch pipes (6), one end, close to the rotating pin (14), of the first clamping plate (11) is fixedly connected with the first base (15), and one end, close to the rotating pin (14), of the second clamping plate (12) is fixedly connected with the second base (16); the first base (15) is fixedly connected with a vibration sensor base (17).

4. A vibration measuring device for a high-temperature and high-pressure small branch pipe of a nuclear power station according to claim 3, wherein the first clamping plate (11) is integrally connected with the first base (15) near one end of the rotating pin (14), the second clamping plate (12) is integrally connected with the second base (16) near one end of the rotating pin (14), and the first base (15) is integrally connected with the vibration sensor base (17).

5. A nuclear power plant high temperature high pressure branch pipe vibration measurement apparatus according to claim 3, wherein the pipe clamp assembly and the base connection together constitute a pipe clamp (1).

6. The nuclear power plant high temperature and high pressure small branch pipe vibration measuring device according to claim 5, characterized in that the pipe clamp (1) is made of stainless steel material.

7. A nuclear power plant high temperature and high pressure small branch pipe vibration measurement device according to claim 3, characterized in that the bolt connection piece comprises a bolt (2) and a threaded through hole (5), the vibration sensor base (17) and the vibration sensor (3) are respectively provided with the threaded through hole (5), and the vibration sensor (3) is installed on the vibration sensor base (17) through the bolt (2).

8. The nuclear power station high-temperature high-pressure small branch pipe vibration measuring device according to any one of claims 1-7, wherein the vibration sensor (3) is connected with a vibration acquisition system through a wire (4).