Fillet weld measuring probe for pulsed eddy current

Abstract

The utility model provides a fillet weld measuring probe for pulsed eddy current. The fillet weld measuring probe comprises a main body mechanism and a connecting mechanism, the main body mechanism comprises a lower shell and an upper shell, mounting grooves are formed in one side of the interior of the lower shell and one side of the interior of the upper shell, coils are mounted in the mounting grooves, pulsed eddy current plugs are symmetrically mounted on one side of the lower shell and one side of the upper shell, and sleeve shells are fixedly connected to one side of the lower shell and one side of the upper shell; arc-shaped parts are integrally formed on the two sides of the sleeve shell; the connecting mechanism comprises two pin shafts, the pin shafts are arranged between the upper shell and the lower shell, and the upper shell is hinged to the lower shell through the pin shafts; adjustment can be carried out according to the included angle of the fillet weld, the lower shell and the upper shell are attached to the fillet weld, measurement is carried out in cooperation with a pulsed eddy current plug, the requirement for fillet weld measurement scenes of different angles is met, the pulsed eddy current application range is expanded, and the problem that the fillet weld is difficult to measure is solved.

Description

Technical Field

[0001] The utility model relates to a measuring probe, in particular to a fillet weld measuring probe for pulse eddy current, belonging to the technical field of non-destructive testing. Background Art

[0002] Pulse eddy current technology belongs to the field of non-destructive testing. It is a measurement method that can be used to perform online testing on pipelines, tanks, towers, etc. During the test, the performance, temperature, and state of the internal medium will not affect the test results. In addition, pulse eddy current technology can be used to achieve line scanning and surface scanning, which improves the overall work efficiency. At the same time, it also has good technical characteristics in terms of measurement accuracy and reproducibility.

[0003] Pulsed eddy current technology has been widely used in refining, chemical industry, power plants, nuclear industry, etc. Its advanced technology ensures that pipelines or containers can be scanned and located in an all-round and fast manner. However, for some special occasions, it is necessary to study suitable probes for detection to meet the maximum application range.

[0004] In the pipelines, storage tanks, containers and other equipment in the refining and petrochemical industries, in order to adopt, empty or change the direction of the pipeline, the related pipelines will be directly welded. During long-term work, the pipelines, especially the welding points, are prone to corrosion. For example, the draining guide will gather water vapor or corresponding media, and the sampling pipeline will gather working media. More often, due to the sudden welding fork or turn of the pipeline, the internal advection medium will appear turbulent. These phenomena will accelerate the corrosion of the connection between the pipeline and the branch pipe, especially the welding. Especially for places with poor welding quality, leakage is more likely to occur. These places are generally narrow in space and present a certain angle. Therefore, neither ordinary pulse eddy current probes nor traditional ultrasonic thickness probes can fit the welding places for measurement;

[0005] In order to solve the above technical problems, a pulse eddy current fillet weld measurement probe is proposed. Utility Model Content

[0006] In view of this, the utility model provides a pulse eddy current fillet weld measurement probe to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is implemented as follows: a pulse eddy current fillet weld measuring probe comprises a main body mechanism and a connecting mechanism;

[0008] The main body mechanism comprises a lower shell and an upper shell, a mounting groove is provided on one side of the inner part of the lower shell and the upper shell, a coil is installed inside the mounting groove, a pulse eddy current plug is symmetrically installed on one side of the lower shell and the upper shell, a sleeve is fixedly connected to one side of the lower shell and the upper shell, and arc portions are integrally formed on both sides of the sleeve;

[0009] The connection mechanism comprises two pins, the pins are arranged between the upper shell and the lower shell, and the upper shell is hinged to the lower shell through the pins.

[0010] Further preferably, a fixing bolt is inserted into the pin shaft.

[0011] Further preferably, a card slot is symmetrically provided on one side of the lower shell, a card plate is carded inside the card slot, and one side of the card plate is fixedly connected to the upper shell.

[0012] Further preferably, a gasket is provided on one side of the lower shell and the upper shell.

[0013] Further preferably, a first socket is provided on one side of the lower shell and the upper shell, a first plug rod is inserted into the inside of the first socket, one end of the first plug rod is fixedly connected to the gasket, and a second socket is symmetrically provided on one side of the lower shell and the upper shell, a second socket is inserted into the inside of the second socket, one end of the second plug rod is fixedly connected to a fixing block, and one side of the fixing block is fixedly connected to the gasket.

[0014] Further preferably, a fixing plate is symmetrically fixedly connected to one side of the lower shell, a fixing shaft is fixedly connected to one side of the fixing plate, two sleeve plates are mounted on one side of the fixing shaft, one side of the sleeve plates is fixedly connected to the upper shell, a torsion spring is mounted on one side of the fixing shaft, and both ends of the torsion spring are respectively fixedly connected to the lower shell and the upper shell.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model can be adjusted according to the angle of the fillet weld, so that the lower shell and the upper shell are fitted to the fillet weld, and the pulse eddy current plug is used for measurement, which meets the measurement scenarios of fillet welds at different angles, expands the scope of pulse eddy current application, and solves the problem of difficult measurement of fillet welds;

[0017] Second, the utility model hinges the lower shell and the upper shell so that they can fit with fillet welds of different angles, fixes the angles with fixing bolts, and arranges torsion springs to make the lower shell and the upper shell fit more tightly with the fillet welds, thereby improving measurement accuracy.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a bottom view of the structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional structural diagram of the casing in the utility model;

[0023] Figure 4 This is a structural diagram of the gasket in the utility model;

[0024] Figure 5 This is a connection structure diagram of the lower shell and the upper shell in the utility model.

[0025] Figure numerals: 10, main body; 11, lower shell; 12, upper shell; 13, pulse eddy current plug; 14, sleeve; 15, arc portion; 16, gasket; 17, clamping plate; 18, fixing block; 19, mounting groove; 20, connecting mechanism; 21, pin shaft; 22, fixing plug; 23, fixing plate; 24, sleeve plate; 25, torsion spring; 26, fixing shaft; 31, coil; 32, first plug rod; 33, second plug rod; 34, first plug hole; 35, second plug hole; 36, clamping slot. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1As shown in FIG. 5 , an embodiment of the utility model provides a pulse eddy current fillet weld measuring probe, which is composed of a main body mechanism 10 and a connecting mechanism 20.

[0029] The main body 10 includes a lower shell 11 and an upper shell 12. The lower shell 11 and the upper shell 12 are used to fit with the fillet weld to facilitate the measurement of the fillet weld in cooperation with the pulse eddy current equipment. An installation groove 19 is opened on one side of the inner part of the lower shell 11 and the upper shell 12, and a coil 31 is installed inside the installation groove 19. Pulse eddy current plugs 13 are symmetrically installed on one side of the lower shell 11 and the upper shell 12. A sleeve 14 is fixedly connected to one side of the lower shell 11 and the upper shell 12, and arc portions 15 are integrally formed on both sides of the sleeve 14.

[0030] In one embodiment, the housing 14 is made of a soft rubber material, which allows the housing 14 to deform to a certain extent when subjected to force, and prevents the two housings 14 from squeezing each other and affecting normal measurement when measuring fillet welds with a small angle.

[0031] In one embodiment, in order to prevent the contact surface of the lower shell 11 and the upper shell 12 from sliding with the fillet weld and affecting the measurement, a gasket 16 is provided on one side of the lower shell 11 and the upper shell 12, and a first socket 34 is opened on one side of the lower shell 11 and the upper shell 12, and a first plug rod 32 is inserted into the inside of the first socket 34, and one end of the first plug rod 32 is fixedly connected to the gasket 16, and a second socket 35 is symmetrically opened on one side of the lower shell 11 and the upper shell 12, and a second plug rod 33 is inserted into the inside of the second socket 35, and one end of the second plug rod 33 is fixedly connected to a fixing block 18, and one side of the fixing block 18 is fixedly connected to the gasket 16, and the first plug rod 32 and the second plug rod 33 cooperate with the first socket 34 and the second socket 35 to facilitate the connection and fixation of the gasket 16 to the lower shell 11 and the upper shell 12, and to facilitate the replacement of the gasket 16 when necessary.

[0032] The connecting mechanism 20 includes two pins 21 and a fixing plug 22. The pin 21 is arranged between the upper shell 12 and the lower shell 11. The upper shell 12 is hinged to the lower shell 11 through the pin 21. The fixing plug 22 is inserted into one side of the pin 21 for locking the pin 21, so as to fix the angle of the lower shell 11 and the upper shell 12 after they are fitted with the fillet weld.

[0033] In one embodiment, in order to limit the maximum rotation angle of the lower shell 11 and the upper shell 12, a card slot 36 is symmetrically opened on one side of the lower shell 11, and a card plate 17 is clamped inside the card slot 36. One side of the card plate 17 is fixedly connected to the upper shell 12, and the maximum rotation angle of the lower shell 11 and the upper shell 12 is limited to 180° through the card plate 17.

[0034] In one embodiment, in order to enhance the connection strength between the lower shell 11 and the upper shell 12, a fixing plate 23 is symmetrically fixedly connected to one side of the lower shell 11, a fixing shaft 26 is fixedly connected to one side of the fixing plate 23, two sleeve plates 24 are mounted on one side of the fixing shaft 26, and one side of the sleeve plate 24 is fixedly connected to the upper shell 12.

[0035] In one embodiment, in order to make the lower shell 11 and the upper shell 12 fit more easily with the fillet weld, a torsion spring 25 is mounted on one side of the fixed shaft 26 , and both ends of the torsion spring 25 are fixedly connected to the lower shell 11 and the upper shell 12 respectively.

[0036] The utility model is in operation: when in use, the coil 31 is fixed in the mounting groove 19, and the measuring angle is achieved by adjusting the lower shell 11 and the upper shell 12. The angle between the lower shell 11 and the upper shell 12 is adjusted according to the angle of the fillet weld to ensure that the pulse eddy current plug 13 can fit the weld as closely as possible. Then, the pin 21 is locked by the fixing plug 22, and the fillet weld can be measured in cooperation with the pulse eddy current instrument. When the lower shell 11 and the upper shell 12 are fitted together, the torsion spring 25 drives the lower shell 11 and the upper shell 12 to move, so that they fit more closely to the fillet weld, thereby improving the measurement accuracy. After the measurement, the fixing plug 22 is removed to separate the lower shell 11 and the upper shell 12 from the fillet weld.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A pulsed eddy current fillet weld measurement probe, characterized in that: It comprises a main body mechanism (10) and a connecting mechanism (20); The main body mechanism (10) comprises a lower shell (11) and an upper shell (12); a mounting groove (19) is provided on one side of the interior of the lower shell (11) and the upper shell (12); a coil (31) is installed inside the mounting groove (19); a pulse eddy current plug (13) is symmetrically installed on one side of the lower shell (11) and the upper shell (12); a sleeve (14) is fixedly connected to one side of the lower shell (11) and the upper shell (12); and arc portions (15) are integrally formed on both sides of the sleeve (14); The connection mechanism (20) comprises two pins (21), wherein the pins (21) are arranged between the upper shell (12) and the lower shell (11), and the upper shell (12) is hingedly connected to the lower shell (11) via the pins (21).

2. A pulsed eddy current fillet weld measurement probe according to claim 1, characterized in that: A fixing plug (22) is inserted into the interior of the pin shaft (21).

3. The pulse eddy current fillet weld measurement probe according to claim 1, characterized in that: A card slot (36) is symmetrically provided on one side of the lower shell (11), a card plate (17) is carded inside the card slot (36), and one side of the card plate (17) is fixedly connected to the upper shell (12).

4. The pulse eddy current fillet weld measurement probe according to claim 1, characterized in that: A gasket (16) is provided on one side of the lower shell (11) and the upper shell (12).

5. The pulse eddy current fillet weld measurement probe according to claim 4, characterized in that: A first plug hole (34) is provided on one side of the lower shell (11) and the upper shell (12), a first plug rod (32) is inserted into the interior of the first plug hole (34), one end of the first plug rod (32) is fixedly connected to the gasket (16), and a second plug hole (35) is symmetrically provided on one side of the lower shell (11) and the upper shell (12), a second plug rod (33) is inserted into the interior of the second plug hole (35), one end of the second plug rod (33) is fixedly connected to a fixing block (18), and one side of the fixing block (18) is fixedly connected to the gasket (16).

6. The pulse eddy current fillet weld measurement probe according to claim 1, characterized in that: A fixing plate (23) is symmetrically fixedly connected to one side of the lower shell (11), a fixing shaft (26) is fixedly connected to one side of the fixing plate (23), two sleeve plates (24) are sleeved on one side of the fixing shaft (26), one side of the sleeve plates (24) is fixedly connected to the upper shell (12), a torsion spring (25) is sleeved on one side of the fixing shaft (26), and two ends of the torsion spring (25) are respectively fixedly connected to the lower shell (11) and the upper shell (12).

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