CN213420668U - Wave guide rod for nuclear power station leakage monitoring acoustic emission sensor - Google Patents
Wave guide rod for nuclear power station leakage monitoring acoustic emission sensor Download PDFInfo
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- CN213420668U CN213420668U CN202022095307.8U CN202022095307U CN213420668U CN 213420668 U CN213420668 U CN 213420668U CN 202022095307 U CN202022095307 U CN 202022095307U CN 213420668 U CN213420668 U CN 213420668U
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- acoustic emission
- emission sensor
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- nuclear power
- positioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model relates to a wave guide rod for a nuclear power station leakage monitoring acoustic emission sensor, which comprises a wave guide component, wherein both ends of the wave guide component are respectively provided with a welding part and a connecting part; the mounting part is arranged at the extending part of the connecting part; the acoustic emission sensor is tightly attached to the inside of the mounting part; the mounting part comprises a mounting seat, a mounting cavity is arranged in the mounting seat, and the acoustic emission sensor is arranged at the bottom of the mounting cavity; the insulating sheet is arranged on the top of the acoustic emission sensor; the pressing plate is arranged at the top of the insulating sheet and is arranged on the mounting seat; the top at the mount pad is installed to the upper cover, and the upper cover compresses tightly pressure strip, insulating piece and acoustic emission sensor about in proper order at the installation intracavity through the fastener, the utility model discloses install acoustic emission sensor waveguide part one end, and the one end of waveguide part is direct and pipeline welding to on the pipeline is installed acoustic emission sensor to be convenient, avoid the use of the too high influence acoustic emission sensor of temperature in the pipeline heat preservation, ensure acoustic emission sensor's detection reliability.
Description
Technical Field
The utility model belongs to the technical field of the waveguide pole is relevant, especially, relate to a nuclear power station leakage monitoring acoustic emission is waveguide pole for sensor.
Background
By arranging the acoustic emission sensor on the local monitored pipe section of the main steam pipeline of the nuclear power station, when the detected pipeline leaks, the generated ultrasonic signal is detected by the acoustic emission sensor and is transmitted to the acoustic emission processing cabinet through the signal amplifier for analysis and processing, and when the leakage amount exceeds an allowable fixed value, the acoustic emission sensor sends out a pipeline leakage alarm and gives out leakage position information.
In practical application, when the main steam pipeline between the outlet of the steam generator and the containment penetration piece is broken or is broken too much, the acoustic emission sensors are required to be uniformly installed at all positions above the pipeline, but after the acoustic emission sensors are installed for many times, the pipelines are externally provided with thick heat insulation layers, the temperature of the heat insulation layers is very high, if the acoustic emission sensors are directly installed on the pipelines, the acoustic emission sensors cannot be used due to overhigh temperature, and the detection reliability of the acoustic emission sensors is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough and providing an acoustic emission sensor direct mount of being convenient for on the pipeline to can not lead to the unable use of acoustic emission sensor because of the high temperature of pipeline, be one kind and guarantee the wave guide pole for the acoustic emission sensor of nuclear power station leakage monitoring reliability.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a nuclear power station leakage monitoring wave guide rod for acoustic emission sensor includes:
the guided wave component is columnar, and two ends of the guided wave component are respectively provided with a welding part and a connecting part;
the mounting part is arranged at the extending part of the connecting part;
and the acoustic emission sensor is tightly attached to the inside of the mounting part.
Further, the mounting portion includes:
the acoustic emission sensor is arranged at the bottom of the mounting cavity;
the insulating sheet is arranged on the top of the acoustic emission sensor;
the compression plate is arranged at the top of the insulation sheet and is arranged on the mounting seat;
the upper cover is installed at the top of the installation seat, wherein the upper cover sequentially compresses the compression plate, the insulation sheet and the acoustic emission sensor up and down in the installation cavity through fasteners.
Furthermore, a plurality of positioning plates are arranged on the circumferential direction of the pressing plate, and first positioning holes are formed in the positioning plates; the top of the mounting seat is provided with a positioning groove corresponding to the positioning plate, and a second positioning hole corresponding to the first positioning hole is arranged in the positioning groove; and the locking piece in the first positioning hole penetrates through the second positioning hole to fix the pressing plate on the mounting seat.
Further, the front end of the welding part is V-shaped.
Furthermore, a cable head of the acoustic emission sensor is connected with a metal diameter expanding ring outside the mounting seat; the metal warp expanding ring is connected with the metal sealing head; the metal sealing head is communicated with the metal hose.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
the utility model discloses the nuclear power station leakage monitoring wave guide pole for acoustic emission sensor of scheme, overall structure is compact, install acoustic emission sensor waveguide part one end, and waveguide part's one end is direct and pipeline welding, can convenient and fast like this install acoustic emission sensor on corresponding pipeline, and can also avoid the use of the too high temperature in pipeline heat preservation influence acoustic emission sensor, ensure acoustic emission sensor's detection reliability, this wave guide pole can be applied to pressurized water reactor nuclear motor group main steam conduit and locally be monitored the pipeline section, the safety and stability operation convenient to use of nuclear power station has been guaranteed, better validity and reliability have.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
fig. 1 is a side view of the present invention;
FIG. 2 is a partial cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic structural view of the acoustic emission sensor when the cable head is connected;
wherein: the acoustic emission sensor comprises a wave guide component 1, a mounting part 2, an acoustic emission sensor 3, a welding part 10, a mounting base 20, an insulation sheet 21, a pressure plate 22, an upper cover 23, a positioning plate 24, a first positioning hole 25, a metal warp expanding ring 30, a metal sealing head 31 and a metal hose 32.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, the waveguide rod for a nuclear power station leakage monitoring acoustic emission sensor according to the present invention includes a waveguide component 1, a mounting portion 2, and an acoustic emission sensor 3, wherein the waveguide component 1 is cylindrical, and two ends of the waveguide component 1 are respectively provided with a welding portion 10 and a connecting portion; the installation part 2 is installed at the extending part of the connecting part, and the acoustic emission sensor 3 is tightly attached to the inside of the installation part 2.
Specifically, the mounting portion includes a mounting base 20, an insulating sheet 21, a pressing plate 22 and an upper cover 23; the mounting seat 20 is cylindrical, a cylindrical mounting cavity is arranged in the mounting seat 20, the mounting cavity is used for mounting the acoustic emission sensor 3, a counter bore is formed in the bottom of the mounting cavity, and the bottom of the acoustic emission sensor 3 is mounted in the counter bore, so that the acoustic emission sensor 3 can be mounted and positioned conveniently; the insulating sheet 21 is arranged on the top of the acoustic emission sensor 3, and plays an insulating role in the acoustic emission sensor 3 when in use, so that the safety performance is improved; the compression plate 22 is arranged on the top of the insulation sheet 21, the compression plate 22 is fastened on the mounting seat 20, and the compression plate 22 compresses the insulation sheet 21 and the acoustic emission sensor 3 up and down in the mounting cavity; the upper cover 23 is installed on the top of the installation base 20, and the upper cover 23 sequentially compresses the compression plate 22, the insulation sheet 21 and the acoustic emission sensor 3 in the installation cavity up and down through a fastener 4, wherein the fastener 4 may be a screw or a bolt.
In addition, three arc-shaped positioning plates 24 are arranged on the circumferential direction of the pressing plate 22, and first positioning holes 25 are formed in the positioning plates 24; be equipped with the constant head tank that corresponds with locating plate 24 on the top of mount pad 20 circumference, be equipped with the second locating hole that corresponds with first locating hole 25 in the constant head tank, the retaining member passes first locating hole 25 and second locating hole in proper order and fastens pressure strip 22 on mount pad 20, simultaneously pressure strip 22 and insulating piece 21 are all installed in the installation cavity, the retaining member can be parts such as screw.
As a further preferred embodiment, the front end of the welding part is V-shaped, so that when the welding part is welded to the pipeline, the area of the welding area between the welding part and the pipeline can be larger, and the welding stability is improved.
As a further preferred embodiment, referring to fig. 3, a cable head of the acoustic emission sensor 3 is connected to a metal expanded diameter ring 30 outside the mounting base 20; the metal expanding ring 30 is connected with a metal sealing head 31; the metal sealing head 31 is communicated with the metal hose 32, and when the acoustic emission sensor is in actual use, the acoustic emission sensor 3 is connected with an external connector through the metal hose 32, so that the acoustic emission sensor 3 is convenient to use and install.
The following describes a specific mounting operation.
In practical application, a plurality of waveguide rods can be installed on a pipeline for use, so as to ensure the accuracy of waveguide rod conduction, and this embodiment exemplifies a process of installing the waveguide rods on the pipeline; during installation, firstly, the bottom of the acoustic emission sensor is positioned and installed through a counter bore at the bottom of the installation cavity, then the insulating sheet is placed at the top of the acoustic emission sensor, the pressing sheet is placed above the insulating sheet, and meanwhile, the pressing plate is fixed on the installation seat through three screws, so that the pressing plate presses the insulating sheet and the acoustic emission sensor downwards in the installation cavity from top to bottom; install the upper cover on the mount pad through three screw immediately for the upper cover compresses tightly the pressure strip, thereby compresses tightly acoustic emission sensor and fixes in the bottom of installation cavity, and it can on corresponding pipeline to weld the weld part lug weld at last.
When the pipeline is operated, the temperature in the heat-insulating layer of the pipeline is transmitted into the acoustic emission sensor through the waveguide component, and the waveguide component is in a long-strip columnar shape, so that the temperature is gradually reduced in the process of transmitting the temperature from the waveguide component to the acoustic emission sensor, and the temperature is low when the temperature is transmitted to the acoustic emission sensor, so that the use of the acoustic emission sensor cannot be influenced, and the service life of the acoustic emission sensor is prolonged; in addition, the acoustic emission sensor is directly attached to the inside of the installation cavity and is in close contact with the waveguide component, so that the detection reliability of the acoustic emission sensor is ensured.
The utility model discloses a wave guide pole for nuclear power station leakage monitoring acoustic emission sensor, overall structure is compact, install acoustic emission sensor waveguide part one end, and waveguide part's one end is direct and pipeline welding, can convenient and fast like this install acoustic emission sensor on corresponding pipeline, and can also avoid the too high use that influences acoustic emission sensor of pipeline heat preservation intraformational high temperature, ensure acoustic emission sensor's detection reliability, this wave guide pole can be applied to PWR nuclear power unit main steam conduit and locally be monitored the pipeline section, the safe and stable operation convenient to use of nuclear power station has been guaranteed, better validity and reliability have.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a nuclear power station leakage monitoring wave guide rod for acoustic emission sensor which characterized in that includes:
the guided wave component is columnar, and two ends of the guided wave component are respectively provided with a welding part and a connecting part;
the mounting part is arranged at the extending part of the connecting part;
and the acoustic emission sensor is tightly attached to the inside of the mounting part.
2. The waveguide rod for nuclear power plant leak monitoring acoustic emission sensors of claim 1, wherein the mounting portion comprises:
the acoustic emission sensor is arranged at the bottom of the mounting cavity;
the insulating sheet is arranged on the top of the acoustic emission sensor;
the compression plate is arranged at the top of the insulation sheet and is arranged on the mounting seat;
the upper cover is installed at the top of the installation seat, wherein the upper cover sequentially compresses the compression plate, the insulation sheet and the acoustic emission sensor up and down in the installation cavity through fasteners.
3. The waveguide rod for the nuclear power plant leakage monitoring acoustic emission sensor according to claim 2, wherein: a plurality of positioning plates are arranged on the circumferential direction of the pressing plate, and first positioning holes are formed in the positioning plates; the top of the mounting seat is provided with a positioning groove corresponding to the positioning plate, and a second positioning hole corresponding to the first positioning hole is arranged in the positioning groove; and the locking piece in the first positioning hole penetrates through the second positioning hole to fix the pressing plate on the mounting seat.
4. The waveguide rod for the nuclear power plant leakage monitoring acoustic emission sensor according to claim 1, wherein: the front end of the welding part is V-shaped.
5. The waveguide rod for the nuclear power plant leakage monitoring acoustic emission sensor according to claim 1, wherein: the cable head of the acoustic emission sensor is connected with a metal extended ring outside the mounting seat; the metal warp expanding ring is connected with the metal sealing head; the metal sealing head is communicated with the metal hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022095307.8U CN213420668U (en) | 2020-09-22 | 2020-09-22 | Wave guide rod for nuclear power station leakage monitoring acoustic emission sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022095307.8U CN213420668U (en) | 2020-09-22 | 2020-09-22 | Wave guide rod for nuclear power station leakage monitoring acoustic emission sensor |
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| Publication Number | Publication Date |
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| CN213420668U true CN213420668U (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022095307.8U Active CN213420668U (en) | 2020-09-22 | 2020-09-22 | Wave guide rod for nuclear power station leakage monitoring acoustic emission sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115629134A (en) * | 2022-10-24 | 2023-01-20 | 哈尔滨工业大学 | Acoustic emission testing device |
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2020
- 2020-09-22 CN CN202022095307.8U patent/CN213420668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115629134A (en) * | 2022-10-24 | 2023-01-20 | 哈尔滨工业大学 | Acoustic emission testing device |
| CN115629134B (en) * | 2022-10-24 | 2023-04-28 | 哈尔滨工业大学 | Acoustic emission testing device |
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