CN113724903A

CN113724903A - Sensor examination device

Info

Publication number: CN113724903A
Application number: CN202110999962.2A
Authority: CN
Inventors: 席志德; 喻丹萍; 杨杰; 马建中; 孙磊
Original assignee: Nuclear Power Institute of China
Current assignee: Nuclear Power Institute of China
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2021-11-30
Anticipated expiration: 2041-08-27
Also published as: CN113724903B

Abstract

In order to solve the technical problem that the sensor is inevitably broken, loosened or fallen off when the sensor is used due to the lack of an examination device for examining the sensor and the installation mode thereof under high-speed hydraulic flushing in the prior art, the embodiment of the invention provides a sensor examination device, which comprises: the fluid pipeline is used for introducing fluid; the test piece is arranged in the fluid pipeline and used for installing a sensor to be tested; and a hydraulic device connected to the fluid conduit for regulating a flow rate of the fluid flowing into the fluid conduit. According to the embodiment of the invention, the fluid flow characteristics consistent with the actual measurement position are constructed through the fluid pipeline, the test piece and the hydraulic device, and the installation modes of different types of sensors, the protection process of the lead and the sealing are tested under the action of different water flow speeds.

Description

Sensor examination device

Technical Field

The invention relates to a sensor testing device.

Background

In the flow induced vibration test of the heat transfer pipe of the nuclear reactor internals and the steam generator, a large number of measuring sensors are arranged on a test piece.

The sensors mounted on the test piece are subjected to high-speed axial or transverse scouring by external running water. In extreme cases, the lead of the sensor, the fixing bracket thereof and the sensor itself may be broken, loosened and fall off due to the action of the high-speed fluid, and the whole measuring process is affected. For the real-time measurement of the nuclear reactor, the foreign matters caused by the high-speed hydraulic scouring of the sensor can bring serious influence on the safety of the reactor, and the subsequent foreign matter cleaning is very troublesome.

Therefore, before formal measurement, if a pre-scouring test can be carried out on the installed sensor, the phenomenon that the sensor loosens and falls off or a lead wire is broken in the measurement process can be greatly avoided.

It is desirable to design a device that can be tested with sensors and their mounting under high-speed hydraulic scouring.

Disclosure of Invention

In order to solve the technical problem that the sensor is inevitably broken, loosened or fallen off when the sensor is used due to the lack of an examination device for examining the sensor and the installation mode of the sensor under high-speed hydraulic flushing in the prior art, the embodiment of the invention provides the sensor examination device.

The embodiment of the invention is realized by the following technical scheme:

the embodiment of the invention provides a sensor testing device, which comprises:

the fluid pipeline is used for introducing fluid;

the test piece is arranged in the fluid pipeline and used for installing a sensor to be tested; and

and the hydraulic device is connected with the fluid pipeline and is used for adjusting the flow rate of the fluid flowing into the fluid pipeline.

Further, the fluid conduit includes:

the examination section is used for installing the test piece, and the examination section is provided with a window used for observing the state of the sensor to be examined on the test piece.

Further, the test piece includes:

the first test piece is arranged in the fluid pipeline and used for installing a sensor main body to be tested; and

and the second test piece is arranged in the fluid pipeline, is opposite to the first test piece in position and is used for installing a lead of the sensor to be tested.

Furthermore, the examination section is provided with a side visual window and a front visual window; the side visual window and the first test piece are arranged on the examination section in a positive opposite mode, and the front visual window is arranged on the side face of the examination section adjacent to the first test piece; the second test piece and the first test piece are obliquely and oppositely arranged at the testing section.

Further, the fluid pipeline further comprises an outlet section, an inlet section and a steady flow section; the inlet section, the flow stabilizing section, the examination section and the outlet section are communicated in sequence; the inlet section of the fluid conduit is connected to a hydraulic device.

Further, the test piece is provided with a frequency regulator.

Further, the side visible window is made of transparent materials; the front visible window is made of transparent materials; and one side of the transparent material of the front visual window, which is close to the interior of the examination section, is provided with a plurality of channels.

Further, the inlet section comprises an inlet section upper flange, an inlet section main pipe, an inlet section reducing transition section, an inlet section connecting loop pipe and an inlet section lower flange which are connected in sequence; the inlet section is connected with the hydraulic device through an upper flange of the inlet section, and a lower flange of the inlet section is connected with the steady flow section.

Furthermore, the outlet section comprises an outlet section upper flange, an outlet section connecting loop pipe, an outlet section reducing transition section, an outlet circuit main pipe and an outlet section lower flange which are sequentially connected.

Furthermore, the examination section also comprises an examination pipe main pipe; an examination section upper flange and an examination section lower flange are respectively arranged at two ends of the examination pipe main pipe; the first test piece, the front visual window, the side visual window and the second test piece are all arranged on the main pipe of the examination pipe; the steady flow section is connected with the upper flange of the examination section; and the test section upper flange is connected with the inlet section.

Compared with the prior art, the embodiment of the invention has the following advantages and beneficial effects:

according to the sensor testing device provided by the embodiment of the invention, the fluid flow characteristics consistent with the actual measurement position are constructed through the fluid pipeline, the test piece and the hydraulic device, and the testing can be performed on the installation modes of different types of sensors, the protection process of the lead and the sealing under the action of different water flow speeds.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of a sensor testing device.

Fig. 2 is a schematic structural diagram of the outlet section.

FIG. 3 is a structural diagram of an examination section.

FIG. 4 is a side view of the first test piece mounting structure.

Fig. 5 is a front view schematically showing a first test piece mounting structure.

Fig. 6 is a schematic structural view of a first test piece.

Fig. 7 is a front view of the front view window.

Fig. 8 is a side view of the front view window structure.

Fig. 9 is a schematic structural view of a second test piece.

Fig. 10 is a schematic view of a fluid steady flow section configuration.

Fig. 11 is a schematic view of the inlet section.

Fig. 12 is a schematic diagram of a pre-test sensor installation.

FIG. 13 is a schematic view of a post-test sensor installation.

FIG. 14 is a schematic view of a post-test sensor lead mounting.

Reference numbers and corresponding part names in the drawings:

in the figure, 1-outlet section; 2-examination section; 3-steady flow section; 4-an inlet section; 5, mounting a bracket; 6-outlet section upper flange; 7-the outlet section is connected with a loop pipe; 8-outlet section variable diameter transition section; 9-outlet loop main pipe; 10-outlet section lower flange; 11-testing section upper flange; 12-a first test piece; 13-examination section main pipe; 14-a lower flange of the test section; 15-front visual window; 16-side view window; 17-a second test piece; 18-a first trial mounting frame; 19-mounting a panel; 20-a lead; 21-first test piece mounting panel seal; 22-first trial panel attachment bolt; 23-a first trial fixation nut; 24-first test piece seal; 25-a frequency adjustor; 26-a sensor; 27-channel; 28-side view window seal; 29-side view mirror; 30-side visible window press plate flange; 31-side visible window fixing bolt; 32-second trial fixation bolt; 33-inlet section lower flange; 34-a steady flow section upper flange; 35-a steady flow section main pipe; 36-a steady flow section lower flange; 37-inlet section upper flange; 38-the upper flange of the inlet section is connected with a mounting bracket hole; 39-the flange on the inlet section is connected with a steady flow section mounting hole; 40-inlet section main pipe; 41-inlet section variable diameter transition section; and 42-the inlet section is connected with the loop pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

Examples

In order to solve the technical problem that the sensor is inevitably broken, loosened or dropped during use due to the lack of the testing device for testing the sensor and the installation mode thereof under high-speed water flushing in the prior art, an embodiment of the invention provides a sensor testing device, which is shown in fig. 1 to 11 and comprises: the fluid pipeline is used for introducing fluid; the test piece is arranged in the fluid pipeline and used for installing a sensor to be tested; and a hydraulic device connected to the fluid conduit for regulating a flow rate of the fluid flowing into the fluid conduit.

In fig. 1, the lower end of the fluid pipeline is a water inlet section, and the upper end is a water outlet section; the whole testing device is arranged on the mounting bracket 5, and the water inlet end and the water outlet section of the fluid pipeline and the hydraulic device form a hydraulic loop.

Specifically, the hydraulic device and the fluid pipeline form a hydraulic loop of fluid, the flow rate of the fluid is adjusted by adjusting the flow in the hydraulic loop, and the adjustment of the flow rate of the fluid in the fluid pipeline through the hydraulic device simulates the environment of high-speed hydraulic flushing of the sensor under the actual condition, so that the test of the sensor in the environment is realized.

A window is designed to facilitate observation of the state of the sensor during the process.

Specifically, the fluid conduit includes: the examination section 2 is used for installing the test piece, and the examination section is provided with a window used for observing the state of the sensor to be examined on the test piece.

Referring to fig. 3, the challenge section is provided with a side viewing window 16 and a front viewing window 15; the side visual window 16 and the first test piece are arranged in the test section in a positive opposition mode, and the front visual window 15 is arranged on the side face of the test section adjacent to the first test piece; the second test piece and the first test piece are obliquely and oppositely arranged at the testing section.

Specifically, the front visual window is arranged on the outer side of the examination section right in front, the side visual window 16 is arranged on the outer right side of the examination section, and the second test piece is arranged on the outer right side of the examination section below the side visual window and is arranged oppositely to the first test piece obliquely downwards.

Further, the fluid pipeline also comprises an outlet section 1, an inlet section 4 and a steady flow section 3; the inlet section 4, the steady flow section 3, the examination section 2 and the outlet section 1 are communicated in sequence; the inlet section of the fluid conduit is connected to a hydraulic device.

Further, the outlet section comprises an outlet section upper flange 6, an outlet section connecting loop pipe 7, an outlet section reducing transition section 8, an outlet circuit main pipe 9 and an outlet section lower flange 10 which are sequentially connected.

Further, the inlet section comprises an inlet section upper flange 37, an inlet section main pipe 40, an inlet section reducing transition section 41, an inlet section connecting loop pipe 42 and an inlet section lower flange 33 which are connected in sequence; the inlet section is connected with the hydraulic device through an upper flange of the inlet section, and a lower flange of the inlet section is connected with the steady flow section.

The inlet section upper flange 37 is further provided with an inlet section upper flange connecting mounting bracket hole 38 and an inlet section upper flange connecting steady flow section mounting hole 39.

The steady flow section comprises a steady flow section upper flange 34, a steady flow section main pipe 35 and a steady flow section lower flange 36 which are connected in sequence.

Further, the examination section also comprises an examination pipe main pipe 13; an examination section upper flange 11 and an examination section lower flange 14 are respectively arranged at two ends of the examination pipe main pipe; the first test piece 12, the front visual window 15, the side visual window 16 and the second test piece 17 are all arranged on the examination pipe main pipe 13; the steady flow section is connected with the upper flange of the examination section; and the test section upper flange is connected with the inlet section.

Further, the side visible window is made of transparent materials; the front visible window is made of transparent materials; the side of the transparent material of the front visual window, which is close to the interior of the examination section, is provided with a plurality of channels 27.

In order to facilitate tests on different parts of the sensor, the test piece of the test device is set into a first test piece and a second test piece, the first test piece is used for the anti-water-flow impact test of the sensor main body, and the second test piece is used for the water-flow impact test of the lead of the sensor and the set of the leads, namely the dense wire harness.

Specifically, the test piece includes:

the first test piece is arranged in the fluid pipeline and used for installing the sensor main body 26 to be tested; and

and the second test piece is arranged in the fluid pipeline and is opposite to the first test piece in position, and is used for installing the lead 20 of the sensor to be tested.

In order to facilitate the testing of the anti-vibration properties of the sensor body, the test piece is further provided with a frequency regulator 25.

Referring to fig. 4-6, a first test piece is mounted on the test piece mounting panel 19 by a frequency adjustor 25 and sealed with a first test piece seal 24 and finally secured to the mounting panel 19 with a first test piece securing nut 23. The natural frequency of the first test piece can be adjusted by the frequency adjuster to carry out the test.

After the first test piece is assembled, the mounting panel 19 is mounted on the first test piece mounting frame 18 and sealed with the first test piece mounting panel seal 21. Finally, the mounting panel 19 is attached to the mounting frame 18 by the first test piece panel attachment bolts 22. The mounting frame 18 is welded to the test section main pipe 13. The first test piece extends into the test section through a hole in the main pipe 13 of the test section, and can be subjected to a transverse fluid action or an axial fluid action by changing the installation mode.

Referring to fig. 6, the sensor to be tested is installed at the position to be tested, as shown in fig. 8, the vibration resistance of the sensor under different scouring actions can be tested.

In order to observe the state of the sensor during the test, a front visual window 15 and a side visual window 16 are designed on the front and the side of the test segment main pipe 13. The front viewing window is made of transparent material and the inner surface simulates the channel 27 made up of multiple channels, the radius R and the distance L of which correspond to the actual structure.

The side visual window is installed opposite to the first test piece, the side visual window viewing mirror 29 is made of transparent material, is sealed through the side visual window seal 28 and is pressed by the side visual window pressing plate flange 30, and finally is fixed on the panel of the main inspection pipe 13 by the side visual window fixing bolt 31.

A second test piece 17 is designed upstream of the first test piece 12, the purpose of which is to provide a test environment with a dense piping composition, which can be chosen depending on the specific test task.

The second test piece 17 extends into the test section 13, one end of the second test piece 17 is mounted in the mounting hole of the opposite panel, and the other end is fixed on the panel of the test section by a second test piece fixing bolt 32.

The sensor used for the flow-induced vibration test of the in-pile component of the number 5 unit of the Fuqing nuclear power station is washed and tested by adopting the testing device of the embodiment. The lead protection and sealing of the sensor and the mounting process of the sensor are examined. After the examination, the sealing and mounting process of the sensor with the weak link is improved, and all the sensors are ensured not to be damaged or fall off in the process of formal test. As shown with reference to fig. 12-14.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A sensor testing device, comprising:

the fluid pipeline is used for introducing fluid;

2. The sensor testing apparatus of claim 1, wherein said fluid conduit comprises:

3. The sensor testing apparatus of claim 2, wherein said test piece comprises:

4. The sensor testing device of claim 3, wherein said testing segment has a side viewing window and a front viewing window; the side visual window and the first test piece are arranged on the examination section in a positive opposite mode, and the front visual window is arranged on the side face of the examination section adjacent to the first test piece; the second test piece and the first test piece are obliquely and oppositely arranged at the testing section.

5. The sensor testing device of claim 2, wherein the fluid conduit further comprises an outlet section, an inlet section, and a flow stabilizer section; the inlet section, the flow stabilizing section, the examination section and the outlet section are communicated in sequence; the inlet section of the fluid conduit is connected to a hydraulic device.

6. The sensor testing apparatus of claim 1, wherein said test piece is provided with a frequency adjustor.

7. The sensor testing device of claim 1, wherein said side viewing window is made of a transparent material; the front visible window is made of transparent materials; and one side of the transparent material of the front visual window, which is close to the interior of the examination section, is provided with a plurality of channels.

8. The sensor testing device of claim 5, wherein the inlet section comprises an inlet section upper flange, an inlet section main pipe, an inlet section variable diameter transition section, an inlet section connecting loop pipe and an inlet section lower flange which are connected in sequence; the inlet section is connected with the hydraulic device through an upper flange of the inlet section, and a lower flange of the inlet section is connected with the steady flow section.

9. The sensor testing device of claim 5, wherein the outlet section comprises an upper outlet section flange, an upper outlet section connecting loop pipe, a reducing outlet section transition section, a main outlet loop pipe and a lower outlet section flange which are connected in sequence, and the lower outlet section flange is connected with the testing section.

10. The sensor testing device of claim 2, wherein said testing section further comprises a testing tube main tube; an examination section upper flange and an examination section lower flange are respectively arranged at two ends of the examination pipe main pipe; the first test piece, the front visual window, the side visual window and the second test piece are all arranged on the main pipe of the examination pipe; the steady flow section is connected with the upper flange of the examination section; and the test section upper flange is connected with the inlet section.