CN202002914U - Fixing device for acoustic emission sensor for detecting corrosion of bottom plate of storage tank - Google Patents
Fixing device for acoustic emission sensor for detecting corrosion of bottom plate of storage tank Download PDFInfo
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- CN202002914U CN202002914U CN2010206870725U CN201020687072U CN202002914U CN 202002914 U CN202002914 U CN 202002914U CN 2010206870725 U CN2010206870725 U CN 2010206870725U CN 201020687072 U CN201020687072 U CN 201020687072U CN 202002914 U CN202002914 U CN 202002914U
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Abstract
The utility model discloses a fixing device for an acoustic emission sensor for detecting corrosion of a bottom plate of a storage tank, relating to the technical field of acoustic wave measurement. The fixing device mainly comprises a bracket (1), a magnetic adsorption seat (8) and a sensor containing chamber (3); and the adsorption seat (8) formed in a way that a shell (11) is covered on a ferromagnet (12) is fixed at one side of the bracket (1), and the sensor containing chamber (3) internally provided with a built-in spring (5) and a spring cover plate (6) is fixed at the other side of the bracket (1). The fixing device has a simple structure, and is light and convenient, firm in fixing of the sensor, and convenient to dismantle.
Description
Technical field
The utility model is that the calibrate AE sensor stationary installation is used in a kind of storage tank bottom plate corrosion detection, relates to the field of measuring technique of sound wave.
Background technology
The phenomenon of local source snap-out release energy generation transient state elastic wave is called acoustic emission (Acoustic Emission is called for short AE) in the material, is also referred to as the stress wave emission sometimes.There is acoustic emission to take place when most of material deformations and fracture.
Ground vertical metal storage tank is widely applied in petrochemical industry, is used to store industrial chemicals and product.Storage tank is when load change, and the bottom corrosion thinning area produces the corrosion layer that distortion causes and comes off and cracking, and leaks the turbulent flow sound that produces etc. and all can produce acoustic emission phenomenon.This phenomenon is applied in the corrosion of storage tank bottom plate is estimated with leakage, by receive signal by the calibrate AE sensor of certain array fixed and arranged on the storage tank outer wall from tank bottom " sound source ", and the acoustic emission detection system of application specific is carried out data acquisition and Treatment Analysis to these information, finally can realize the corrosion and the leakage situation assessment of storage tank bottom plate, this bottom corrosion assessment technique comes across the end of the eighties in last century the earliest.
In acoustic emission signal detects, the effect of sensor is converted to electric signal to acoustic emission wave exactly, the installation of sensor often needs to be attached to material surface by certain stationary installation and accepts acoustic emission signal, sensor surface is smeared certain thickness couplant simultaneously, reduces acoustical signal in sensor and material surface decay at the interface.In storage tank bottom plate corrosion acoustic emission detection, calibrate AE sensor is cylindrical, and sensor sticks on the storage tank shell during detection, accepts from the acoustic emission signal at the bottom of the jar indirectly by the pot liquid medium.
At present, the magnetic holders that use on the test specimen of steel or container more, storage tank bottom plate corrosion detects the ∩ type support that has the sensor cavity volume of magnetic outer wall or have a magnetic adsorbing block with the general employing of calibrate AE sensor holder as holder, this class magnetic deck has easy for installation, the coupling advantage of uniform, but also there is certain shortcoming: the one, have the holder of sensor cavity volume, magnetic part often is embedded in the sensor cavity volume outer wall and magnetic block directly contacts tank skin, during permanent the use, occur magnetic part easily and come off and be adsorbed on phenomenon on the steel test specimen, particularly adopt glue to paste the holder of magnetic part; The 2nd, the holder of sensor cavity volume is not set, when removal sensor, the phenomenon that sensor falls appears in moment that holder and tank skin break away from easily, thereby causes the damage sensor; The 3rd, holder unloading inconvenience, magnetic attracting power is bigger between deck and test specimen, is not easy dismounting, and causes the checked object surface damage easily.
The utility model content
The purpose of this utility model is that a kind of simple in structure, convenient disassembly of design, fixing safe and reliable storage tank bottom plate corrosion detect and use the calibrate AE sensor stationary installation.
Calibrate AE sensor stationary installation described in the utility model is seen Fig. 1-Fig. 3, mainly comprises support 1, adsorption site 8 and sensor cavity volume 3; The adsorption site 8 that is made of shell 11 parcel ferromagnets 12 is fixed on support 1 on one side, and the sensor cavity volume 3 of built-in spring 5 and spring bumper cover 6 is fixed on the another side of support 1.
Described support 1 is " Z " font thin plate, at the top board center rack ventilating hole 2 is arranged, and with fixation of sensor cavity volume 3, there is fixed magnetic adsorption site 8 at the base plate center and passes the hole of riveting bolt 7;
Described magnetic adsorption site 8 is the cuboid cavity, and the nonmagnetic substance shell 11 of the ferromagnet 12 outsourcing cuboid cavitys of cuboid is contained in the magnetic adsorption site (8), and magnetic adsorption site 8 tops have threaded hole, is fixed on the base plate center of support 1 by riveted joint bolt 7;
Described sensor cavity volume 3 is the drum shape of end opening other end sealing, the lateral wall middle part cuts off one " ∩ " profile, the interior end of sensor cavity volume 3, be equipped with built-in spring 5 and at built-in spring 5 lower end fixing spring cover plates 6, spring bumper cover 6 and the 3 inwall loose fits of sensor cavity volume, 3 mouthfuls of ends of sensor cavity volume are sensor cavity volume open top 10, whole sensor cavity volume 3 is fixed on the support 1 by rack ventilating hole 2 and sensor cavity volume bottom opening 4 by screw, and sensor cavity volume 3 can be rotated out flexibly with respect to support 1; Built-in spring 5 and spring bumper cover 6 can play isolates and provides even strength plane for built-in spring 5 calibrate AE sensor.
Advantage of the present utility model:
1) this calibrate AE sensor stationary installation has the cavity volume of comprehensive containing sensor, and can be embodied as the mode of rotating flexibly with respect to the stationary installation support, protection sensor when for convenience detach, can prevent simultaneously sensor contact tank skin deflection, have facilitation improving detection effect and installation effectiveness;
2) the sensor cavity volume side of this calibrate AE sensor stationary installation has sensor signal exit " ∩ " type active tunnel, fixes applicable to the sensor of differing heights, and convenient on-the-spot the detection used;
3) support of this calibrate AE sensor stationary installation can fixedly secure sensor and can play the effect of lever during stationary installation in dismounting, makes things convenient for the disengaging of adsorption site;
4) the magnetic adsorption site 8 of this calibrate AE sensor stationary installation contacts with the metal tank skin indirectly, under the bigger situation of suction, ferromagnet can not occur and come off to be adsorbed on and be difficult to the phenomenon laid down on the tube wall;
5) this calibrate AE sensor stationary installation is convenient transforms, and available magnet base with magnetic switch replaces the magnetic adsorption site 8 in the utility model, stationary installation is transform as the calibrate AE sensor stationary installation that is easier to dismantle;
6) simple in structure, be convenient to processing and manufacturing.
As seen, the utility model is that the storage tank bottom plate corrosion of a kind of simple in structure, light, sensor fixation, convenient disassembly detects and uses the calibrate AE sensor stationary installation.
Description of drawings
The corrosion of Fig. 1 storage tank bottom plate detects with calibrate AE sensor fixture structure cut-open view (B-B cut-open view)
The corrosion of Fig. 2 storage tank bottom plate detects with calibrate AE sensor stationary installation side view (A of Fig. 1 is to structural drawing)
The corrosion of Fig. 3 storage tank bottom plate detects with calibrate AE sensor stationary installation vertical view
1-support 2-rack ventilating hole wherein
3-sensor cavity volume 4-sensor cavity volume bottom opening
The built-in spring 6-of 5-spring bumper cover
7-riveted joint bolt 8-magnetic adsorption site
The open top of 9-sensor cavity volume sidewall " ∩ " type opening 10-sensor cavity volume
11-nonmagnetic substance shell 12-ferromagnet
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
Embodiment. as Fig. 1, Fig. 2 and shown in Figure 3, this routine support 1, adsorption site 8 and sensor cavity volume 3 of mainly comprising; The adsorption site 8 that is made of nonmagnetic substance shell 11 parcel ferromagnets 12 is fixed on support 1 on one side, and the sensor cavity volume 3 of built-in spring 5 and spring bumper cover 6 is fixed on the another side of support 1.
Described support 1 is " Z " font thin plate, thickness of slab 4mm, the wide 40mm of plate, the long 80mm of top board has Φ 5mm rack ventilating hole 2, with fixation of sensor cavity volume 3 at the top board center, the long 80mm of base plate, there is fixed magnetic adsorption site 8 at the base plate center and passes the Φ 5mm hole of riveting bolt 7, plate hight 80mm;
Described magnetic adsorption site 8 is 70 * 70 * 50mm cuboid, ferromagnet 12 outsourcing nonferromagnetic material shells 11 by 60 * 60 * 30mm cuboid constitute, magnetic adsorption site 8 tops have M5mm, and threaded hole is riveted the base plate center that bolt 7 is fixed on support 1 by M5mm;
Described sensor cavity volume 3 is the drum shape of end opening other end sealing, wall thickness 3mm, its physical dimension is: Φ 55 * 100mm, the lateral wall middle part cuts off one " ∩ " profile, the interior end of sensor cavity volume 3, be equipped with the built-in spring 5 of built-in external diameter 52mm and the fixing spring bumper cover 6 of Φ 52mm in built-in spring 5 lower ends, spring bumper cover 6 and the 3 inwall loose fits of sensor cavity volume, 3 mouthfuls of ends of sensor cavity volume are sensor cavity volume open top 10, and whole sensor cavity volume 3 is fixed on the support 1 by Φ 5mm rack ventilating hole 2 and Φ 5mm sensor cavity volume bottom opening 4 by screw.
Can process one " worker " snap riveting nail in this example, sensor cavity volume 3 and support 1 riveted joint are got up, also available screw connects, and can keep sensor cavity volume 3 to rotate flexibly with respect to support 1 as required, the orientation adjustment when auxiliary calibrate AE sensor is installed.In the present embodiment, ferromagnet 12 adopts the alnico alloy rigid magnets, and nonmagnetic substance shell 11 adopts duroplastss, can open some apertures in shell 11 bottoms, for " magnetic line of force " by open conduit is provided, support 1 adopts duralumin.
During use, sensor is placed 3 li of sensor cavity volumes, the upper end of sensor contacts with the built-in spring bumper cover 6 of sensor cavity volume 3, and the sensor lower end is connected with storage tank shell to be measured by couplant, utilizes magnetic adsorption site 8 that support 1 is adsorbed on the storage tank shell simultaneously.
This example is through test of many times, and sensor fixation, convenient disassembly are simple in structure, light.
Claims (4)
1. a storage tank bottom plate corrosion detects and uses the calibrate AE sensor stationary installation, it is characterized in that it mainly comprises support (1), magnetic adsorption site (8) and sensor cavity volume (3); The adsorption site (8) that is made of shell (11) parcel ferromagnet (12) is fixed on support (1) on one side, and the sensor cavity volume (3) of built-in spring (5) and spring bumper cover (6) is fixed on the another side of support (1).
2. storage tank bottom plate corrosion according to claim 1 detects uses the calibrate AE sensor stationary installation, it is characterized in that described support (1) is " Z " font thin plate, rack ventilating hole (2) is arranged at the top board center, with fixation of sensor cavity volume (3), there is fixed magnetic adsorption site (8) at the base plate center and passes the hole of riveting bolt (7).
3. storage tank bottom plate corrosion according to claim 1 detects uses the calibrate AE sensor stationary installation, it is characterized in that described magnetic adsorption site (8) is the cuboid cavity, the nonferromagnetic material shell (11) of the ferromagnet of cuboid (12) outsourcing cuboid cavity is contained in the magnetic adsorption site (8), magnetic adsorption site (8) top has threaded hole, is fixed on the base plate center of support (1) by riveted joint bolt (7).
4. storage tank bottom plate corrosion according to claim 1 detects uses the calibrate AE sensor stationary installation, it is characterized in that described sensor cavity volume (3) is the drum shape of end opening other end sealing, the lateral wall middle part cuts off one " ∩ " profile, the interior end of sensor cavity volume (3), be equipped with built-in spring (5) and at built-in spring (5) lower end fixing spring cover plate (6), spring bumper cover (6) and sensor cavity volume (3) inwall loose fit, sensor cavity volume (3) mouthful end is sensor cavity volume open top (10), and whole sensor cavity volume (3) is fixed on the support (1) by rack ventilating hole (2) and sensor cavity volume bottom opening (4) by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206870725U CN202002914U (en) | 2010-12-28 | 2010-12-28 | Fixing device for acoustic emission sensor for detecting corrosion of bottom plate of storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206870725U CN202002914U (en) | 2010-12-28 | 2010-12-28 | Fixing device for acoustic emission sensor for detecting corrosion of bottom plate of storage tank |
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| Publication Number | Publication Date |
|---|---|
| CN202002914U true CN202002914U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206870725U Expired - Lifetime CN202002914U (en) | 2010-12-28 | 2010-12-28 | Fixing device for acoustic emission sensor for detecting corrosion of bottom plate of storage tank |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507874A (en) * | 2011-11-08 | 2012-06-20 | 华中科技大学 | Detecting device of storage tank soleplate |
| CN102879028A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Adaptive magnetic fixture for ultrasonic detection sensors |
| CN103383376A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate |
| CN105203640A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Embedded type acoustic emission sensing system |
| CN105241956A (en) * | 2015-10-29 | 2016-01-13 | 南京化工特种设备检验检测研究所 | Acoustic emission inspection device for storage tank base plate corrosion |
| CN106841395A (en) * | 2016-12-14 | 2017-06-13 | 中国石油天然气集团公司 | A kind of composite strengthens metallic conduit the cannot-harm-detection device and method |
| RU2746719C2 (en) * | 2016-08-25 | 2021-04-19 | Зе Боинг Компани | Acoustic-emission sensor holder |
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
-
2010
- 2010-12-28 CN CN2010206870725U patent/CN202002914U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507874A (en) * | 2011-11-08 | 2012-06-20 | 华中科技大学 | Detecting device of storage tank soleplate |
| CN102507874B (en) * | 2011-11-08 | 2014-09-24 | 华中科技大学 | Detecting device of storage tank soleplate |
| CN103383376A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate |
| CN103383376B (en) * | 2012-05-04 | 2015-05-27 | 中国石油天然气股份有限公司 | Sensor-carrying device for plane guided wave online detection of defects of storage tank base plate |
| CN102879028A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Adaptive magnetic fixture for ultrasonic detection sensors |
| CN105203640A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Embedded type acoustic emission sensing system |
| CN105241956A (en) * | 2015-10-29 | 2016-01-13 | 南京化工特种设备检验检测研究所 | Acoustic emission inspection device for storage tank base plate corrosion |
| CN105241956B (en) * | 2015-10-29 | 2018-07-06 | 南京化工特种设备检验检测研究所 | A kind of storage tank bottom plate corrodes acoustic emission detection system |
| RU2746719C2 (en) * | 2016-08-25 | 2021-04-19 | Зе Боинг Компани | Acoustic-emission sensor holder |
| CN106841395A (en) * | 2016-12-14 | 2017-06-13 | 中国石油天然气集团公司 | A kind of composite strengthens metallic conduit the cannot-harm-detection device and method |
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111005 |
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| CX01 | Expiry of patent term |