Magnetic yoke type magnetic defect detector magnetization current measuring device

Abstract

The utility model relates to a magnetizing current measuring device for a magnet yoke type magnetic defect detector. The magnetizing current measuring device comprises a group of power supply leads, corresponding marks on the power supply leads corresponding to different working magnet yoke probes, an alternating current and direct current clamp-type ampere meter arranged on the power supply leads, and a normally open button contained in the clamp-type ampere meter and used for starting the magnet yoke probes to work, two ends of each power supply wire are provided with plugs which are the same as those of two ends of an original magnetizing current multi-core cable, and the number and the specification of the power supply wires are consistent with those of core wires of the original magnetizing current multi-core cable. After starting, the AC / DC clamp-type ammeter is sleeved on a power supply lead of a corresponding magnet yoke probe, a normally open button is pressed down, the magnet yoke probe is started to work, and magnetization current in the magnet yoke probe is accurately indicated by the AC / DC clamp-type ammeter; when different types of magnet yoke probes are replaced, the magnetizing current can be accurately measured by sleeving the alternating-current and direct-current clamp-type ampere meter on a corresponding magnetizing current power supply wire.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic particle flaw detection, and in particular relates to a yoke type magnetic particle flaw detector magnetizing current measuring device which ensures the accuracy of the magnetizing current of the yoke type magnetic particle flaw detector. Background Art

[0002] Yoke type magnetic particle flaw detector is a kind of magnetic particle flaw detector. The electromagnetic yoke is a yoke-shaped electromagnet, usually composed of a V-shaped or II-shaped solid or laminated soft magnetic material surrounded by a circuit coil. Since the electromagnetic yoke flaw detector is easy to carry and has strong adaptability, it has been widely used in on-site magnetic particle flaw detection. When the yoke type magnetic particle flaw detector is calibrated and measured, the actual magnetization current is required not to exceed ±10% of the effective current value. The composition of the yoke type magnetic particle flaw detector includes: main machine, equipped with a rotating magnetic field, corner weld, annular and other yoke probes, and multi-core cable connecting wires. There is no corresponding magnetization current measurement indicator device in the composition of the yoke type magnetic particle flaw detector. In the actual calibration measurement operation, the magnetization current through the multi-core cable connecting wire cannot be measured to obtain an accurate magnetization current value. Utility Model Content

[0003] The purpose of the utility model is to overcome the problem of missing magnetizing current measurement in the yoke type magnetic particle flaw detector in the above-mentioned prior art and to provide a magnetizing current measuring device for the yoke type magnetic particle flaw detector to ensure accurate measurement of the magnetizing current of the yoke type magnetic particle flaw detector.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a magnetizing current measuring device for a yoke type magnetic particle flaw detector, comprising a group of power supply wires, corresponding markings on the power supply wires corresponding to different working yoke probes, the magnetizing current measuring device is connected between the flaw detection host and the yoke probe, an AC / DC clamp-type ammeter is connected to the power supply wire, and the AC / DC clamp-type ammeter contains a close button for starting the work of the yoke probe; the two ends of the power supply wire are provided with the same plugs as the two ends of the original magnetizing current multi-core cable, and the number and specifications of the power supply wires are consistent with the core wires of the original magnetizing current multi-core cable.

[0005] After turning on the flaw detector host, clamp the AC / DC clamp-type ammeter on the power supply wire of the corresponding yoke probe, press the close button, the yoke probe starts working, and the magnetizing current in the yoke probe is accurately indicated by the AC / DC clamp-type ammeter.

[0006] When replacing a different type of yoke probe in a yoke type magnetic particle flaw detector, the magnetizing current can be accurately measured by simply putting an AC / DC clamp-type ammeter on the power supply wire of the corresponding magnetizing current.

[0007] The utility model has the following beneficial effects: a yoke type magnetic particle flaw detector magnetizing current measuring device, the magnetizing current is indicated by an AC / DC clamp-type ammeter equipped on a conductor group, the magnetizing current is monitored in real time, and the actual magnetizing current requirement is ensured not to exceed ±10% of the effective current value, thereby ensuring the accurate implementation of the magnetic particle flaw detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] In the figure, 1 is the main unit of the yoke type magnetic particle flaw detector, 2 is the AC and DC clamp type ammeter, 3 is the close button, 4 is the wire, and 5 is the yoke probe. DETAILED DESCRIPTION

[0010] The utility model provides a yoke type magnetic particle flaw detector magnetizing current measuring device, comprising a group of power supply wires, corresponding markings of different working yoke probes on the power supply wires and AC / DC clamp type ammeters on the power supply wires, wherein the AC / DC clamp type ammeters are provided with a button for starting the work of the yoke probes, thereby forming an AC / DC magnetizing current detection circuit; plugs identical to those at both ends of an original magnetizing current multi-core cable are arranged at both ends of the power supply wires, and the number and specification of the power supply wires are consistent with the core wires of the original magnetizing current multi-core cable.

[0011] Before the yoke type magnetic particle flaw detector works, the magnetizing current measuring device is connected between the flaw detector host and the yoke probe. After the flaw detector host is turned on, the AC / DC clamp-type ammeter is clamped on the power supply wire of the corresponding yoke probe, and the close button is pressed. The yoke probe starts working, and the magnetizing current in the yoke probe is accurately indicated by the AC / DC clamp-type ammeter. When replacing different types of yoke probes, only the AC / DC clamp-type ammeter needs to be put on the corresponding magnetizing current power supply wire to accurately measure the magnetizing current.

[0012] like Figure 1 As shown, a yoke type magnetic particle flaw detector magnetizing current measuring device comprises a group of power supply wires 4, corresponding markings of different working yoke probes on the power supply wires 4, an AC / DC clamp-type ammeter 2 arranged on the power supply wires 4, and a close button 3 contained in the clamp-type ammeter for starting the work of the yoke probe 5; the same plugs as the two ends of the original magnetizing current multi-core cable are provided at both ends of the power supply wires 4, and the number and specifications of the power supply wires 4 are consistent with the core wires of the original magnetizing current multi-core cable.

[0013] Before the yoke type magnetic particle flaw detector works, the magnetization current measuring device is connected between the flaw detector host 1 and the yoke probe 5. After the flaw detector host 1 is turned on, the AC / DC clamp type ammeter 2 is clamped on the power supply wire 4 of the corresponding yoke probe, and the closing button 3 is pressed. The yoke probe 5 starts working, and the magnetization current in the yoke probe 5 is accurately indicated by the AC / DC clamp type ammeter 2; when replacing a different type of yoke probe 5, it is only necessary to put the AC / DC clamp type ammeter 2 on the corresponding magnetization current power supply wire 4 to accurately measure the magnetization current. The AC / DC clamp type ammeter has a range of 20A and an accuracy level of 2.5.

Claims

1. A magnetizing current measuring device for a yoke type magnetic particle flaw detector, comprising a set of power supply wires (4), corresponding different working yoke probes (5) marked with corresponding markings on the power supply wires (4), characterized in that: The magnetizing current measuring device is connected between the flaw detection host (1) and the yoke probe (5); an AC / DC clamp-type ammeter (2) is connected to the power supply wire (4); the AC / DC clamp-type ammeter (2) contains a button (3) for starting the yoke probe (5) to work; the two ends of the power supply wire (4) are provided with the same plugs as the two ends of the original magnetizing current multi-core cable; the number and specifications of the power supply wire (4) are consistent with the core wires of the original magnetizing current multi-core cable.

2. A yoke type magnetic particle flaw detector magnetizing current measuring device according to claim 1, characterized in that: After the flaw detection host (1) is turned on, the AC / DC clamp type ammeter (2) is clamped onto the power supply wire (4) of the corresponding yoke probe (5), and the closing button (3) is pressed, so that the yoke probe (5) starts to work, and the magnetizing current in the yoke probe (5) is accurately indicated by the AC / DC clamp type ammeter (2).

3. The magnetizing current measuring device of a yoke type magnetic particle flaw detector according to claim 1, characterized in that: When a yoke type magnetic particle flaw detector is replaced with a different type of yoke probe (5), the magnetizing current can be accurately measured by simply putting an AC / DC clamp-type ammeter (2) on the power supply wire (4) of the corresponding magnetizing current.

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