CN102478141B - Magnetism positioning device for interior detection of heat exchange tube - Google Patents
Magnetism positioning device for interior detection of heat exchange tube Download PDFInfo
- Publication number
- CN102478141B CN102478141B CN 201010558020 CN201010558020A CN102478141B CN 102478141 B CN102478141 B CN 102478141B CN 201010558020 CN201010558020 CN 201010558020 CN 201010558020 A CN201010558020 A CN 201010558020A CN 102478141 B CN102478141 B CN 102478141B
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- Prior art keywords
- centering
- encoder
- positioning device
- heat exchange
- wheel
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000005389 magnetism Effects 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract 2
- 238000009659 non-destructive testing Methods 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
A magnetism positioning device for the interior detection of a heat exchange tube belongs to a nondestructive testing device and is matched with an internal detecting system for use so as to solve the problems of centering and defect positioning of a sensor in the interior detection process. The magnetism positioning device comprises a supporting unit, a centering unit, a coding and positioning unit and an adsorption unit. A baseplate is used as a supporting center, a central hole is arranged in the middle of the baseplate, and handrails are arranged at the two sides of the baseplate; the centering unit is formed by a supporting frame and a centering wheel which are connected through a supporting shaft; the coding and positioning unit comprises a pin shaft penetrated with a torsional spring, a supporting seat and a coder; and a magnet box and a permanent magnet of the adsorption unit are fixed on the baseplate. The magnetism positioning device has simple and flexible structure and can be used for positioning and centering of the sensor when the interior of the heat exchange tube is detected.
Description
Technical field
The invention belongs to pipe detection device, particularly a kind of magnetism positioning device for interior detection of heat exchange tube.
Background technique
The situation of heat exchanging tube is directly connected to long-term, safety and the steady production of heat transmission equipment, examined environmental limit, and in the exchange heat pipe, detection can only be taked the mode that detects internally.At present in the exchange heat pipe, detection mode mainly contains the methods such as leakage field, ultrasonic, eddy current.When above-mentioned detecting method is implemented, detecting sensor in and defect location be to need the key issue that solves.The centring property of sensor is good, can reduce vibrations, reduces the testing signal background noise, prevents undetected.The detected defective of sensor needs accurately location simultaneously, so that later maintenance.The problems such as existing solution is mainly to utilize electronic pushing away to pull out device, and the method can be controlled automatic location and the centering of realizing sensor by machinery and circuit, but exists equipment volume huge, and centering is complicated, and cost is higher have limited application at the scene.
Summary of the invention
Technical problem to be solved by this invention is: a kind of magnetism positioning device for interior detection of heat exchange tube is provided.Solve sensor in detecting in heat exchanging tube in and the problem of defect location, simple in structure, convenient and reliable.
Technological scheme of the present invention is:
a kind of magnetism positioning device for interior detection of heat exchange tube, it is characterized in that: on the base plate that aluminium is made, center hole is arranged, one side of plate upper surface has bearing, connect encoder by the bearing pin axle on bearing, the torsion spring that connects between encoder and bearing is being arranged on bearing pin, the encoder upper axis connects code wheel, the opposite side of plate upper surface has supporting frame, the supporting frame upper end connects the centering wheel by the back shaft axle, on the vertical tangent line of centering wheel and base plate, the center line of center hole overlaps, the axis parallel of the code wheel axle center of encoder and centering wheel, the moment of torsion of torsion spring guarantees that code wheel compresses the centering wheel, during use, two-wheeled rotates simultaneously, encoder is determined the location of sensor, one circle Baltimore groove is arranged on centering wheel surface, outer border, on two relative both sides of base plate lower surface, the first magnetic box, the second magnetic box are arranged respectively respectively, in the first magnetic box and the second magnetic box, permanent magnet is arranged.
Handrail is respectively arranged on the both sides of plate upper surface.
Effect of the present invention is:
Simple in structure, unsteady surplus that magnetism positioning device for interior detection of heat exchange tube, this device have is large, the characteristics flexibly of moving, and can be applicable to the interior detection of heat exchanging tube.Separated sensor in detecting in heat exchanging tube certainly in and the problem of defect location, simple in structure, convenient and reliable.
Description of drawings
Fig. 1 is the sectional view of the plan view of magnetism positioning device for interior detection of heat exchange tube
Fig. 2 is the plan view of magnetism positioning device for interior detection of heat exchange tube
Fig. 3 is the worm's eye view of magnetism positioning device for interior detection of heat exchange tube
Embodiment
Detect in a kind of heat exchanging tube and use magnetism positioning device, formed by support unit, centering unit, coding location unit and absorbing unit.Described support unit comprises the handrail of base plate and both sides, and handrail is connected with base plate by nut, and there is through hole at the base plate center; Described centering unit comprises supporting frame, back shaft and centering wheel, and is connected with base plate by screw, on the centering wheel, Baltimore groove is arranged; Described coding location unit comprises bearing and encoder, is arranged on encoder bases by the back shaft that torsion spring is housed, and encoder bases is fixed by screws on base plate; Described absorbing unit comprises magnetic box and permanent magnet, and permanent magnet is encased by magnetic box, is fixed on base plate by screw.
As shown in Figure 1, 2, 3, support unit is by being formed by connecting with the base plate 1 of center hole and the first handrail 19 and the second handrail 22; First, second handrail end has screw thread, is connected with elastic washer by nut 12 with base plate to be connected.Base plate 1 uses aluminium, alleviates the quality of support unit, avoids simultaneously being adsorbed the unit magnetization.
Centering unit 21 by supporting frame 9, be with reeded centering wheel 7 to form, centering wheel 7 is arranged on supporting frame 9 by back shaft 8; On base plate 1, tapped hole is arranged, by bolt 10 and plain washer 11, supporting frame 9 is fixed on base plate 1, this moment, centering wheel 7 tangent line overlapped with the center line of center hole on base plate 1, realized the centering of sensor.
Absorbing unit comprises the first absorbing unit and the second absorbing unit, and each is comprised of magnet 14, the first magnetic box 23, the second magnetic box 24; Magnet 14 is encased by first, second magnetic box of rolled stainless steel, and the base plate 1 that is fixed by screw 15 and elastic washer 16 below.
Embodiment
The present invention in use, at first absorbing unit is adsorbed on whole device on the end of heat exchanging tube, the central axis centering of its bottom center hole axis and detected heat exchanging tube, this moment centering wheel Baltimore groove tangent line namely with heat exchanging tube center line centering.When pulling sensor by push rod, the code wheel that drives the coding location unit rotates, and the space acquisition signals such as detection trigger system are realized the space orientation of defective.
Claims (2)
1. magnetism positioning device for interior detection of heat exchange tube, it is characterized in that: the base plate that aluminium is made has center hole on (1), one side of plate upper surface has bearing (2), connect encoder (5) by bearing pin (4) axle on bearing, the torsion spring (3) that connects between encoder and bearing is being arranged on bearing pin (4), the encoder upper axis connects code wheel (6), the opposite side of plate upper surface has supporting frame (9), the supporting frame upper end connects centering wheel (7) by back shaft (8) axle, on the vertical tangent line of centering wheel and base plate, the center line of center hole overlaps, the axis parallel of the code wheel axle center of encoder and centering wheel, the moment of torsion of torsion spring (3) guarantees that code wheel (6) compresses centering wheel (7), during use, two-wheeled rotates simultaneously, encoder (5) is determined the location of sensor, one circle trapezoidal groove is arranged on centering wheel surface, outer border, the first magnetic box (23), the second magnetic box (24) are respectively arranged respectively on two relative both sides of base plate lower surface, in the first magnetic box and the second magnetic box, permanent magnet is arranged.
2. magnetism positioning device for interior detection of heat exchange tube according to claim 1, is characterized in that: handrail (19,22) is respectively arranged on the both sides of plate upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010558020 CN102478141B (en) | 2010-11-24 | 2010-11-24 | Magnetism positioning device for interior detection of heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010558020 CN102478141B (en) | 2010-11-24 | 2010-11-24 | Magnetism positioning device for interior detection of heat exchange tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102478141A CN102478141A (en) | 2012-05-30 |
| CN102478141B true CN102478141B (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010558020 Active CN102478141B (en) | 2010-11-24 | 2010-11-24 | Magnetism positioning device for interior detection of heat exchange tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN102478141B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580785A (en) * | 2017-09-29 | 2019-04-05 | 上海金艺检测技术有限公司 | Scanning tooling and method for turbine blade root defect |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2988168B2 (en) * | 1992-12-25 | 1999-12-06 | 日立プラント建設株式会社 | Automatic piping groove alignment device |
| EP0658746A1 (en) * | 1993-12-15 | 1995-06-21 | Shell Internationale Researchmaatschappij B.V. | Device for carrying equipment through a conduit |
| US6380516B1 (en) * | 1999-08-11 | 2002-04-30 | Mitsubishi Heavy Industries, Ltd. | Connecting clamp, connecting apparatus and connecting method |
| CN201107300Y (en) * | 2007-11-28 | 2008-08-27 | 山东省特种设备检验研究院 | Diffracted wave time difference method ultrasound detection sweeping check support |
| DE102009017975A1 (en) * | 2008-12-23 | 2010-07-08 | Rosen Swiss Ag | Safety device and system for monitoring pipes |
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2010
- 2010-11-24 CN CN 201010558020 patent/CN102478141B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102478141A (en) | 2012-05-30 |
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