CN220894230U - Centering device for ultrasonic detection of bent pipe rotation - Google Patents
Centering device for ultrasonic detection of bent pipe rotation Download PDFInfo
- Publication number
- CN220894230U CN220894230U CN202322675759.7U CN202322675759U CN220894230U CN 220894230 U CN220894230 U CN 220894230U CN 202322675759 U CN202322675759 U CN 202322675759U CN 220894230 U CN220894230 U CN 220894230U
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- centering device
- supporting rod
- bent pipe
- ultrasonic detection
- flexible piece
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 239000000523 sample Substances 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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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
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a centering device for ultrasonic detection of bent pipe rotation, which comprises: support bar, positioning wheel, flexible piece. One end of the supporting rod is provided with a probe interface, and the other end of the supporting rod is provided with a cable interface; the two positioning wheels are respectively coaxially sleeved at the two ends of the supporting rod; the flexible piece is arranged at the position between the two positioning wheels, the support rod at least comprises two sections, and the support rods of different sections are fixedly connected through the flexible piece. The flexible piece which can be deformed is arranged for connecting the segmented support rods, so that the centering device can be deformed to a certain extent in the process of passing through the bent pipe, and each part of the centering device can pass through the pipe elbow in a certain angle; the problem that the existing centering device cannot adapt to the direction change of the bending shape of the elbow part, so that the elbow cannot be detected is solved.
Description
Technical Field
The utility model relates to the technical field of centering devices, in particular to a centering device for ultrasonic detection of bent pipe rotation.
Background
The ultrasonic detection technology for the rotation in the pipeline can be used for accurate quantitative detection and evaluation of the heat exchanger pipe, and has wide application in detection of thermal power, nuclear power and petrochemical heat exchange pipes and good detection effect. At present, the internal rotation ultrasonic detection technology adopted at home and abroad mainly detects straight pipe sections, but the main reason is that a centering device for supporting a probe is connected by a metal rod and cannot adapt to the shape change of an elbow part, so that the elbow cannot be detected, and the detection of the heat exchange pipe elbow section is always blank. In order to meet the requirements of detection technology, a brand new internal rotation ultrasonic detection centering device is designed, and detection of the bent pipe section of the heat exchanger is realized.
Disclosure of utility model
The technical problems solved by the utility model are as follows: in the existing internal rotation ultrasonic detection technology, the centering device for supporting the probe is connected by a metal rod, and cannot adapt to the change of the direction of the bending shape of the elbow part, so that the elbow cannot be detected.
The aim of the utility model can be achieved by the following technical scheme:
a centering device for ultrasonic detection of bent pipe rotation, comprising:
the probe connector is arranged at one end of the supporting rod, and the cable connector is arranged at the other end of the supporting rod;
The two positioning wheels are respectively coaxially sleeved at two ends of the supporting rod;
The flexible piece, the flexible piece sets up two the position between the locating wheel, the bracing piece includes two sections at least, passes through flexible piece fixed connection between the different section bracing pieces.
As a further scheme of the utility model: the circumference of positioning wheel evenly is provided with a plurality of gyro wheels, the axis of gyro wheel with the axis of bracing piece is perpendicular.
As a further scheme of the utility model: the number of the rollers is four.
As a further scheme of the utility model: the number of the flexible pieces is four.
As a further scheme of the utility model: the flexible piece is a rubber hose.
As a further scheme of the utility model: an encoder is arranged in the positioning wheel and is used for recording the path of the roller.
As a further scheme of the utility model: the positioning wheel is sleeved on the supporting rod in a sliding mode, and the positioning wheel is fixed with the supporting rod through a locking structure.
As a further scheme of the utility model: the locking structure is a pin or a wedge.
The centering device for ultrasonic detection of bent pipe rotation has at least one of the following technical effects:
The flexible piece which can be deformed is arranged for connecting the segmented support rods, so that the centering device can be deformed to a certain extent in the process of passing through the bent pipe, and each part of the centering device can pass through the pipe elbow in a certain angle; the problem that the existing centering device cannot adapt to the direction change of the bending shape of the elbow part, so that the elbow cannot be detected is solved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the structure of the present utility model from one perspective;
fig. 2 is a schematic view of another view of the present utility model.
In the figure: 1. a probe interface; 2. a cable interface; 3. a support rod; 4. a flexible member; 5. a roller; 6. and positioning wheels.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1-2, the present utility model is a centering device for ultrasonic detection of bent pipe rotation, comprising: the support rod 3, the positioning wheel 6 and the flexible piece 4. One end of the supporting rod 3 is provided with a probe interface 1, and the other end is provided with a cable interface 2; the two positioning wheels 6 are respectively coaxially sleeved at two ends of the supporting rod 3; the flexible piece 4 is arranged at a position between the two positioning wheels 6, the support rods 3 at least comprise two sections, and the support rods 3 at different sections are fixedly connected through the flexible piece 4.
Referring to fig. 1-2, in one embodiment of the present utility model, the support rod 3 is used as a support body at the center of the centering device, and the support rod 3 is supported by a hard material, where the hard material may be a metal material. One end of the supporting rod 3 is provided with a probe interface 1, the probe interface 1 is used for being connected with an internal rotation ultrasonic detection probe, the other end of the supporting rod 3 is provided with a cable interface 2, and the cable interface 2 is used for being connected with an internal rotation ultrasonic detection cable.
Referring to fig. 1-2, in one embodiment of the present utility model, two positioning wheels 6 are coaxially sleeved at two ends of the supporting rod 3 respectively; namely, one end of the supporting rod 3 is sleeved with a positioning wheel 6, and the positioning wheel 6 and the supporting rod 3 are coaxially arranged. The diameter size of the positioning wheels 6 is matched with the inner diameter of the pipe fitting to be detected, and when the ultrasonic detection probe is used, the two positioning wheels 6 are positioned inside the pipe fitting so that the support rod 3 and the internal rotation ultrasonic detection probe on the support rod 3 can be positioned in the central area of the pipe fitting. An encoder is arranged in the positioning wheel 6, and the encoder is used for the path of the device inside the pipe fitting. The path is recorded based on the positioning wheel 6 or a certain point thereon to form path information.
Referring to fig. 1-2, in one embodiment of the present utility model, the support rod 3 includes at least two sections, and the support rods 3 of different sections are fixedly connected by a flexible member 4. The flexible piece 4 is arranged at a position between the two positioning wheels 6, the supporting rod 3 is made of hard materials, and the rigid characteristics of the supporting rod 3 are utilized to support the movement of the probe and the linear array; the flexible piece 4 is made of flexible materials, and the flexible piece 4 is used for connecting the segmented support rods 3, so that the centering device can be deformed to a certain extent in the process of passing through the bent pipe, and all parts of the centering device can pass through the pipe elbow in a certain angle; further, the supporting rod 3 may be divided into a plurality of segments, for example, the number of the flexible members 4 may be four (refer to the accompanying drawings), and two adjacent segments are connected by the flexible members 4, so that the portion between the two positioning wheels 6 can be bent by a corresponding angle, and the shape of the bent pipe portion is better adapted to the shape of the bent pipe, and the bent pipe can smoothly pass through the pipe elbow. The flexible member 4 may be a rubber hose.
Referring to fig. 1-2, in one embodiment of the present utility model, in order to ensure that the centering device moves smoothly inside the pipe, a plurality of rollers 5 are uniformly disposed in the circumferential direction of the positioning wheel 6, and the axis of the rollers 5 is perpendicular to the axis of the support rod 3 (positioning wheel 6). I.e. the axis of said roller 5 is arranged tangentially to the positioning wheel 6. The number of the rollers 5 may be four. The positioning wheel 6 is contacted with the inner wall of the pipe through the roller 5, so that the moving resistance of the centering device is reduced, and meanwhile, the roller 5 ensures that the centering device moves smoothly in the pipe. Furthermore, in order to avoid that the machining errors existing in the diameter of the pipe affect the movement of the centering device and the centering effect, the roller 5 can realize elastic expansion and contraction of 1-2mm at the outer edge of the positioning wheel 6. In particular, it is possible to provide the elastic force by providing a spring structure at the location of the positioning wheel 6 for mounting the axle of the roller 5. Namely, the positioning wheel 6 is provided with a mounting groove, the wheel shaft of the roller 5 is positioned in the mounting groove, a spring is arranged in the mounting groove and is abutted against the wheel shaft, and the spring provides an outward elastic force.
Referring to fig. 1-2, in one embodiment of the present utility model, in order to enable the distance between two positioning wheels 6 to be adjusted according to the actual situation of the pipe, the positioning wheels 6 are slidably sleeved on the supporting rod 3, and the positioning wheels 6 and the supporting rod 3 are fixed by a locking structure. The locking structure may be a pin or a wedge. When in use, the position of the positioning wheel 6 on the support rod 3 is adjusted according to the actual condition of the pipe fitting, and then the positioning wheel 6 is fixed through pins, wedges or other structures. Further, the flexible pieces 4 can be detachably connected with the support rods 3, so that the number of the flexible pieces 4 used in the connection mode can be adjusted according to actual use conditions. The detachable connection can be a threaded connection, a snap connection or other connection modes.
The working principle of the utility model is as follows:
The centering device for ultrasonic detection of the inner rotation of the bent pipe is used for detecting the bent pipe of the heat exchanger, and the operation is performed according to the following steps under the condition of ensuring the feasibility of a detection process;
(1) Selecting a proper centering device according to the inner diameter of the detected workpiece, mainly considering the diameters of the positioning wheel 6 and the roller 5, wherein the diameters are the same as or similar to the inner diameter of the pipe;
(2) Connecting the probe and the cable at two sides of the centering device, and exciting the probe to ensure that the cable is successfully connected;
(3) The centering device provided with the rotary ultrasonic probe is put in from one side of the heat exchanger tube, and moved for a certain distance to calibrate the encoder of the positioning wheel 6;
(4) Exciting ultrasound, starting detection, moving the centering device from one end of the pipe to the other end through the elbow, ending detection, and storing a detection map;
(5) And (3) performing initial evaluation on the detection map to ensure that detection signals of the bent pipe area are not lost, and further ensuring the validity of detection data.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All such equivalent changes and modifications as come within the scope of the following claims are intended to be embraced therein.
Claims (8)
1. A centering device for ultrasonic detection of bent pipe rotation, comprising:
the device comprises a supporting rod (3), wherein one end of the supporting rod (3) is provided with a probe interface (1), and the other end of the supporting rod is provided with a cable interface (2);
The two positioning wheels (6) are respectively coaxially sleeved at two ends of the supporting rod (3);
The flexible piece (4), the flexible piece (4) sets up in two the position between the locating wheel (6), bracing piece (3) include two sections at least, pass through flexible piece (4) fixed connection between different festival section bracing pieces (3).
2. The centering device for ultrasonic detection of bent pipe rotation according to claim 1, wherein a plurality of rollers (5) are uniformly arranged in the circumferential direction of the positioning wheel (6), and the axis of each roller (5) is perpendicular to the axis of the supporting rod (3).
3. Centring device for ultrasonic detection of bent pipe rotation according to claim 2, characterized in that the number of rollers (5) is four.
4. A centering device for ultrasonic inspection of bent pipe rotation according to claim 3, characterized in that said flexible members (4) are four in number.
5. The centering device for ultrasonic detection of bent pipe rotation according to claim 4, wherein said flexible member (4) is a rubber hose.
6. Centring device for ultrasonic detection of bent-tube rotation according to claim 5, characterized in that an encoder is provided in the positioning wheel (6) for registering the path of the roller (5).
7. The centering device for ultrasonic detection of bent pipe rotation according to claim 1, wherein the positioning wheel (6) is slidably sleeved on the supporting rod (3), and the positioning wheel (6) and the supporting rod (3) are fixed through a locking structure.
8. The centering device for ultrasonic detection of elbow rotation as claimed in claim 7, wherein said locking structure is a pin or wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322675759.7U CN220894230U (en) | 2023-10-07 | 2023-10-07 | Centering device for ultrasonic detection of bent pipe rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322675759.7U CN220894230U (en) | 2023-10-07 | 2023-10-07 | Centering device for ultrasonic detection of bent pipe rotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220894230U true CN220894230U (en) | 2024-05-03 |
Family
ID=90836164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322675759.7U Active CN220894230U (en) | 2023-10-07 | 2023-10-07 | Centering device for ultrasonic detection of bent pipe rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220894230U (en) |
-
2023
- 2023-10-07 CN CN202322675759.7U patent/CN220894230U/en active Active
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