CN212693063U - Detection apparatus for high-temperature pipeline high-frequency vibration response of nuclear power station - Google Patents
Detection apparatus for high-temperature pipeline high-frequency vibration response of nuclear power station Download PDFInfo
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- CN212693063U CN212693063U CN202021912212.4U CN202021912212U CN212693063U CN 212693063 U CN212693063 U CN 212693063U CN 202021912212 U CN202021912212 U CN 202021912212U CN 212693063 U CN212693063 U CN 212693063U
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Abstract
The utility model relates to a detection apparatus for nuclear power station high temperature pipeline high frequency vibration response, including the larynx hoop subassembly, the sensor base, acceleration sensor and digital acquisition module, the larynx hoop subassembly includes the fixing base, annular strap and bolt, the through-hole has been seted up on the fixing base, be provided with the perforation on the annular strap, annular strap stiff end sets up on the fixing base, the through-hole is passed to annular strap free end, the bolt sets up in the through-hole, the mutual block of perforation on the screw thread of bolt and the annular strap, set up threaded hole on the sensor base, the notch has been seted up to sensor base bottom, the draw-in groove has been seted up on the sensor base, the annular strap passes the draw-in groove, acceleration sensor fixes on the screw hole. The utility model can be suitable for pipelines with different pipe diameters, and can stably acquire the vibration data of the pipeline for a long time under the mild high-frequency vibration of the pipeline; meanwhile, data acquisition of the three-dimensional vibration response of the detected pipeline structure is realized.
Description
Technical Field
The utility model belongs to the technical field of detection device, in particular to detection device of nuclear power station high temperature pipeline high frequency vibration response.
Background
The nuclear power station pipeline system is often in a severe working environment with high temperature, high pressure and strong radiation, various fluids are conveyed in the pipeline, the artery and vein of the nuclear power station are the arteries and veins, the arrangement trend of the pipeline system of the nuclear power station is complex, various vibration problems inevitably occur in the pipeline during operation, the pipeline system is caused to break down, and great risks and hidden dangers are brought to safe and efficient operation of the nuclear power station. At the present stage, the influence of a rotating machine on the nuclear power station pipeline vibration, the pipeline vibration generation mechanism and the typical characteristics caused by internal fluid pulsation, the flow transmission pipeline vibration caused by gas-liquid two-phase flow conditions, the nuclear power station pipeline vibration behavior under different supporting conditions and the like are not deeply understood, and the research on the system is to be carried out.
At present, the traditional data mode for acquiring the vibration response of the pipeline is to fix a sensor on the pipeline to be measured by utilizing threaded connection or gluing, and then the sensor acquires the vibration data of the pipeline to be measured. However, the mode of adopting threaded connection is not suitable for special environments, such as small pipe diameter, narrow space, high temperature, high pressure, strong radiation, high-frequency vibration impact and other conditions, and the nuclear power station pipeline is not suitable for being provided with threaded holes due to safety considerations, and based on the factors, the traditional mode of installing the sensor is greatly limited. In addition, in the early practical operation of the pipeline, long-time detection of the vibration response data of the pipeline is often required, and the mode of mounting the sensor by gluing is not stable and reliable enough, especially in the response condition of high-temperature environment and high-frequency vibration. Therefore, it is necessary to design a detection device suitable for high-frequency vibration response of high-temperature pipelines and capable of being stably used for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a detection device for high-frequency vibration response of a high-temperature pipeline of a nuclear power station aiming at the defects of the prior art, which can be suitable for pipelines with different pipe diameters by the matching design of a hose clamp component, a sensor base, an acceleration sensor, a fastener and a digital acquisition module, and can satisfy the requirement that the pipeline stably acquires the data of pipeline vibration for a long time under the mild high-frequency vibration; meanwhile, data acquisition of the three-dimensional vibration response of the detected pipeline structure is realized.
The utility model discloses the technical scheme who adopts:
a detection device for high-frequency vibration response of a high-temperature pipeline of a nuclear power station comprises a hose clamp assembly, a sensor base, a plurality of acceleration sensors, a fastener and a digital acquisition module, wherein the hose clamp assembly comprises a fixed seat, an annular strap and a bolt, a through hole is formed in the fixed seat, a plurality of tooth holes are formed in the annular strap, the fixed end of the annular strap is arranged on the fixed seat, the free end of the annular strap penetrates through the through hole, the bolt is arranged in the through hole, the thread of the bolt is mutually clamped with the tooth holes in the annular strap, the sensor base is designed to be a square structure, threaded holes are formed in three orthogonal surfaces of the sensor base, a notch with a trapezoidal structure is formed in the bottom of the sensor base, a flat clamping groove is formed in the side wall of the sensor base, and the annular strap penetrates through the clamping groove and is connected with, the acceleration sensor is fixed on the threaded hole through a fastener, and the acceleration sensor is connected with the digital acquisition module through a sensor lead.
Furthermore, scale marks and scale numbers are arranged on two sides of the outer surface of the annular clamping band.
Further, the sensor base is made of an aluminum metal material with low density and high rigidity.
Further, the width of the clamping groove is slightly larger than that of the annular band.
Furthermore, the fastener comprises an inner hexagonal socket head cap screw and a washer, the inner hexagonal socket head cap screw sequentially penetrates through the washer and the acceleration sensor, and the inner hexagonal socket head cap screw is in threaded connection with a threaded hole in the sensor base.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a throat hoop subassembly, sensor base, acceleration sensor, fastener and digital acquisition module's cooperation design, annular strap pass through the cooperation of fixing base and bolt, and its size can be adjusted according to the specification of pipeline to annular strap, and annular strap can be applicable to the pipeline of different pipe diameters, satisfies the pipeline under mild high-frequency vibration, the long-term stable data of acquireing the pipeline vibration; meanwhile, the three acceleration sensors are arranged on three orthogonal surfaces of the sensor base, when the pipeline vibrates, the acceleration sensors generate the same vibration, electric signals generated by the acceleration sensors are transmitted to the digital acquisition module, and the digital acquisition module records the electric signals, so that data acquisition of three-dimensional vibration response of the detected pipeline structure is realized.
2. This device is small, and the quality is light, can adapt to different external environment, especially high temperature high pressure and vibration be the pipe-line system of high frequency signal, compares in traditional detection mode, has better weatherability.
3. The utility model has the advantages of simple structure, convenient processing and installation, and saved test cost and time.
4. Besides the pipeline with special working conditions, the device is also suitable for vibration response measurement of the slender rod piece, and can also be used for vibration response detection of rod pieces or pipelines with different configurations and special measuring points, such as the conditions of elbow positions, small outer diameters, small gaps, external flow, special sections and the like.
5. This device adopts mechanical fastening, tightly fixes annular strap on the pipeline under test, compares in traditional sticky mode, has long-term stability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a diagram illustrating the usage of the present invention;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a schematic structural view of a sensor base;
FIG. 5 is a schematic structural view of a sensor base;
in the figure: 1. an annular band; 2. a sensor wire; 3. a sensor base; 4. a threaded hole; 5. a gasket; 6. a socket head cap screw; 7. an acceleration sensor; 8. a card slot; 9. a free end; 10. a bolt; 11. a fixed seat; 12. a pipeline; 13. and (4) a perforation.
Detailed Description
In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, the utility model provides a detection apparatus for high-frequency vibration response of nuclear power station high temperature pipeline, including hose clamp subassembly, sensor base 3, three acceleration sensor 7, fastener and digital acquisition module, hose clamp subassembly includes fixing base 11, annular strap 1 and bolt 10, the through-hole has been seted up on the fixing base 11, be provided with a plurality of tooth holes 13 on the annular strap 1, the stiff end of annular strap 1 sets up on fixing base 11, free end 9 of annular strap 1 passes the through-hole, the size of annular strap 1 is decided by the cross-sectional size of pipeline 12 under test, require that the internal surface of annular strap 1 and the outer cross-section of pipeline 12 under test laminate well, bolt 10 sets up in the through-hole, the mutual block of tooth hole 13 on bolt 10 and the annular strap 1, form the hose clamp by bolt 10 screws fixedly, sensor base 3 designs to the square body structure, threaded holes 4 are respectively formed in three orthogonal surfaces of the sensor base 3, the size of the sensor base 3 and the size of the threaded holes 4 are determined by the size of an acceleration sensor 7, the specification of a pipeline and the like, notches with a trapezoidal structure are vertically formed in the bottom of the sensor base 3, the bottom of the sensor base 3 can be effectively and tightly attached to the outer surface of a tested pipeline 12, flat clamping grooves 8 are transversely formed in the side wall of the sensor base 3, the clamping grooves 8 are located above the notches, free ends 9 of the annular clamping bands 1 penetrate through the clamping grooves 8 and are connected with the clamping grooves 8, the annular clamping bands 1 penetrate through the clamping grooves 8 of the sensor base 3 to tightly fix the sensor base 3 on the tested pipeline 12, the acceleration sensor 7 is fixed on the threaded holes 4 through fasteners, the acceleration sensor 7 is connected with a digital acquisition module through a sensor lead 2, when the tested pipeline 12 vibrates, the acceleration sensors 7 arranged on the three orthogonal surfaces of the sensor base 3 generate the same vibration along with the same vibration, the electric signals generated by the acceleration sensors 7 are transmitted to the digital acquisition module, and the digital acquisition module records the electric signals, so that the three-dimensional vibration response of the structure of the pipeline 12 to be detected is detected.
Specifically, the two sides of the outer surface of the annular belt 1 are provided with scale marks and scale numbers. The extension amount of the free end 9 of the annular clamp belt 1 can be read by taking the scale marks as a reference and by means of scale numbers, and when an operator uses the annular clamp belt, the tightness of the annular clamp belt 1 arranged on a pipe 12 to be measured can be accurately adjusted, so that the operation is flexible.
Specifically, the sensor base 3 is made of an aluminum metal material with low density and high rigidity. The sensor base 3 made of the aluminum material can protect an oxide film on the surface of the sensor base 3 and has better corrosion resistance.
Specifically, the width of the clamping groove 8 is slightly larger than that of the annular band 1. Ensure that the annular belt 1 smoothly passes through the clamping groove 8.
Specifically, the fastener includes hexagon socket head cap screw 6 and packing ring 5, and hexagon socket head cap screw 6 passes packing ring 5 and acceleration sensor 7 in proper order, and hexagon socket head cap screw 6 and the threaded hole 4 threaded connection on the sensor base 3. Because the hexagon socket head cap screws 6 are in threaded connection with the threaded holes 4 on the sensor base 3, the acceleration sensor 7 is tightly fixed on the sensor base 3 by the hexagon socket head cap screws 6.
The utility model discloses a theory of operation does:
when the throat hoop is used, the sensor base 3 corresponding to the detected pipeline 12 is selected according to the specification of the detected pipeline 12, the fixed end of the annular hoop 1 is arranged on the fixed seat 11, the free end 9 of the annular hoop 1 firstly passes through the clamping groove 8 of the sensor base 3, bypasses the outer wall of the detected pipeline 12 and passes through the through hole of the fixed seat 11, the bolt 10 is arranged in the through hole, the thread of the bolt 10 is mutually clamped with the tooth hole 13 on the annular hoop 1, and the bolt 10 is screwed and fixed to form the throat hoop; when the bolt 10 is rotated, the thread of the bolt 10 drives the tooth hole 13 on the annular clamp belt 1 to move, so that the annular clamp belt 1 moves along the corresponding direction, the circular ring of the hose clamp becomes larger or smaller, the tightness degree (namely, loosening or tightening) of the annular clamp belt 1 fixed on the measured pipeline 12 is adjusted, when the hose clamp is used, an operator generally controls the elongation distance of the annular clamp belt 1 according to the previous personal work experience, and the randomness is high;
when the measured pipeline 12 vibrates, the acceleration sensors 7 arranged on three orthogonal surfaces of the sensor base 3 generate the same vibration, electric signals generated by the acceleration sensors 7 are transmitted to the digital acquisition module, and the digital acquisition module records the electric signals, so that the three-dimensional vibration response of the measured pipeline 12 is detected. The utility model discloses a hose clamp subassembly, sensor base 3, acceleration sensor 7, fastener and digital acquisition module's cooperation design, can be applicable to the pipeline 12 under survey of different pipe diameters, satisfy the pipeline 12 under temperature and high frequency vibration, the data of the pipeline 12 vibration under survey of long-term stable acquisition; meanwhile, data acquisition of the three-dimensional vibration response of the structure of the pipeline 12 to be detected is realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a detection apparatus for nuclear power station high temperature pipeline high frequency vibration response which characterized in that: the throat hoop component comprises a fixed seat, an annular hoop and a bolt, a through hole is formed in the fixed seat, a plurality of tooth holes are formed in the annular hoop, the fixed end of the annular hoop is arranged on the fixed seat, the free end of the annular hoop penetrates through the through hole, the bolt is arranged in the through hole, the thread of the bolt is mutually clamped with the tooth holes in the annular hoop, the sensor base is designed into a square structure, threaded holes are formed in three orthogonal surfaces of the sensor base, a notch of a trapezoidal structure is formed in the bottom of the sensor base, a flat clamping groove is formed in the side wall of the sensor base, the annular hoop penetrates through the clamping groove and is connected with the clamping groove, and the acceleration sensor is fixed on the threaded holes through the fastener, the acceleration sensor is connected with the digital acquisition module through a sensor lead.
2. The device for detecting the high-frequency vibration response of the high-temperature pipeline of the nuclear power plant as recited in claim 1, wherein: and the two sides of the outer surface of the annular clamping band are provided with scale marks and scale numbers.
3. The device for detecting the high-frequency vibration response of the high-temperature pipeline of the nuclear power plant as recited in claim 1, wherein: the sensor base is made of an aluminum metal material with low density and high rigidity.
4. The device for detecting the high-frequency vibration response of the high-temperature pipeline of the nuclear power plant as recited in claim 1, wherein: the width of the clamping groove is slightly larger than that of the annular band.
5. The device for detecting the high-frequency vibration response of the high-temperature pipeline of the nuclear power plant as recited in claim 1, wherein: the fastener comprises an inner hexagonal socket head cap screw and a gasket, the inner hexagonal socket head cap screw sequentially penetrates through the gasket and the acceleration sensor, and the inner hexagonal socket head cap screw is in threaded connection with a threaded hole in the sensor base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912212.4U CN212693063U (en) | 2020-09-04 | 2020-09-04 | Detection apparatus for high-temperature pipeline high-frequency vibration response of nuclear power station |
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| CN202021912212.4U CN212693063U (en) | 2020-09-04 | 2020-09-04 | Detection apparatus for high-temperature pipeline high-frequency vibration response of nuclear power station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513469A (en) * | 2021-08-25 | 2021-10-19 | 广东美的制冷设备有限公司 | Mounting bracket, compressor assembly and air conditioning system |
| CN114001817A (en) * | 2021-09-29 | 2022-02-01 | 东南大学 | Acceleration sensor fixing device and method for bridge vibration monitoring |
| CN116699175A (en) * | 2023-08-10 | 2023-09-05 | 山东利恩斯智能科技有限公司 | Circumferential acceleration sensor, impact positioning method and application |
-
2020
- 2020-09-04 CN CN202021912212.4U patent/CN212693063U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513469A (en) * | 2021-08-25 | 2021-10-19 | 广东美的制冷设备有限公司 | Mounting bracket, compressor assembly and air conditioning system |
| CN113513469B (en) * | 2021-08-25 | 2024-04-23 | 广东美的制冷设备有限公司 | Mounting bracket, compressor assembly and air conditioning system |
| CN114001817A (en) * | 2021-09-29 | 2022-02-01 | 东南大学 | Acceleration sensor fixing device and method for bridge vibration monitoring |
| CN114001817B (en) * | 2021-09-29 | 2022-08-19 | 东南大学 | Acceleration sensor fixing device and method for bridge vibration monitoring |
| CN116699175A (en) * | 2023-08-10 | 2023-09-05 | 山东利恩斯智能科技有限公司 | Circumferential acceleration sensor, impact positioning method and application |
| CN116699175B (en) * | 2023-08-10 | 2023-11-21 | 山东利恩斯智能科技有限公司 | Circumferential acceleration sensor, impact positioning method and application |
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