CN2578826Y

CN2578826Y - Vortex testing sensors

Info

Publication number: CN2578826Y
Application number: CN 02280656
Authority: CN
Inventors: 李虹; 郭旭; 李剑秋; 刘书文
Original assignee: Shenyang Liming Aero Engine Group Co Ltd
Current assignee: Shenyang Liming Aero Engine Group Co Ltd
Priority date: 2002-10-23
Filing date: 2002-10-23
Publication date: 2003-10-08
Anticipated expiration: 2012-10-23

Abstract

The utility model relates to a vortex testing sensor, which is mainly composed of a handle, a guide tube and a conducting wire which penetrates through the guide tube, wherein, one end of the conducting wire is connected with a coil arranged in a probe, and the other end of the conducting wire is connected with a socket. The utility model is characterized in that the probe arranged on the front end of the guide tube can be disassembled and unloaded, and the shape of the assembled probe, which can in the shape of a plane head, an inclined rod plane head, a conical head, a lateral point type head and a right angle trapezoid point type head, are different according to the difference of the testing position of work pieces; the probe is mainly composed of a magnetic core, a coil which is wound with the magnetic core and a housing, wherein, the surface magnetic core is processed by the method of injection of Ti+C dual ion reinforcement, which increases obviously the hardness and abrasive resistance of magnetic core material and simultaneously doesn not influence the magnetic performance of the magnetic core material. Compared with the prior art, the manufacture technology of the probe is simple, the cost is low, and the operation is convenient; besides, the sensitive range of the vortex testing sensor fully achieves the international standard, and the display status is fully in accordance with the technical requirements of device operation specifications.

Description

A kind of EDDY CURRENT sensor

Affiliated technical field

The utility model relates to a kind of carrying out flaw detection sensor, especially relates to a kind of EDDY CURRENT sensor that is used for.

Background technology

At present, the EDDY CURRENT sensor kind in the known technology is a lot, and because of the metal material of its detection, the position difference of equipment, produces the sensor of many different structures.As defects detection to the hole on the transformation turbine disk in the aircraft engine, low-pressure compressor rotor one-level dish tongue-and-groove bottom defects detection, the detection of the air hole defective on the low-pressure turbine dish, the detection of blade leading edge and exhaust limit defective, the detection of high-pressure turbine blade exhaust limit, leaf basin, blade back and low-pressure turbine blade exhaust limit defective etc., employed EDDY CURRENT sensor construction requires different, especially more outstanding to the structural requirement of sensor probe.

Its agent structure of EDDY CURRENT sensor in the known technology mainly comprises handle, conduit, probe, and the lead that is connected with the last telefault of popping one's head in is housed in the conduit.Probe master in the known technology is by accompanying ceramic core, outer coiling in the middle of the ferrite.There is complex manufacturing technology in the probe of this structure, defect of high cost.

Summary of the invention

The purpose of this utility model is exactly the defective that overcomes in the known technology, develops a kind of novel EDDY CURRENT sensor, under same inventive concept, designs the not probe of homomorphs, is applicable to different metal material, the detection at equipment position.

Formation of the present utility model mainly comprises: handle, conduit, pass the lead and the probe that is connected with its catheter proximal end of conduit, feature is fixable/dismountable at the probe of catheter proximal end assembling, handle through Ion Implantation Strengthening on the core material surface of probe, to improve its anti-wear performance, do not influence the magnetic property of core material again.Fixable/dismountable probe can be plane capitiform, cone capitiform, side point type capitiform, right-angled trapezium point type capitiform.

Probe mainly is made of shell, magnetic core and the coil on magnetic core.What adopted is the putting type coil of single entry, and its coiling mode is an absolute type.

The above-mentioned surface core material probe through strengthening carries out the Ti+C double ion to the soft magnetic core material surface and injects and form.Ti+C double ion injection rate IR is 2 * 10 ¹⁷Cm ^-2～5.5 * 10 ¹⁷Cm ^-2

Significant advantage of the utility model and benefit are: 1. owing to adopt single entry putting type coil, its winding volume is little, coil inside has magnetic core, therefore has the performance of magnetic focusing, highly sensitive, be applicable to the detection of various metal material surfaces, can also make local detection a certain zone of complex-shaped work.2. because the process Ti+C double ion injection of the core material of probe surface, make material that solution strengthening and dislocation strengthening effect be arranged, has dispersion-strengthened effect simultaneously, this is because the affinity of Ti and C is higher, carbon atom in the injection process is attracted by titanium atom and is enriched to the injection region of Ti, and is combined to TiC mutually with Ti, has increased the dispersion-strengtherning effect of input horizon, can obviously improve the hardness and the anti-wear performance of material, not influence the magnetic property of core material again.

It is to adopt ion implantation apparatus to inject that ion injects, and through ultrasonic cleaning, cleaning fluid is an acetone before injecting, and compared to the prior art, the operation of the strengthening treatment process of probe is significantly simple, and cost is lower.

Description of drawings

Fig. 1 is that the utility model probe is the assembling synoptic diagram of plane capitiform;

Fig. 2 is a brace of the present utility model plane capitiform probe synoptic diagram;

Fig. 3 is a cone capitiform probe synoptic diagram of the present utility model;

Fig. 4 is a side of the present utility model point type capitiform probe synoptic diagram;

Fig. 5 is a right-angled trapezium point type capitiform probe synoptic diagram of the present utility model;

Fig. 6 is that the utility model is used for the testing high voltage turbo blade, the probing shell structural representation on exhaust limit;

Fig. 7 is Fig. 6 A-A cut-open view;

Fig. 8 is that the utility model is used to test low-pressure turbine blade, the probing shell structural representation on exhaust limit;

Fig. 9 is that Fig. 8 A is to cut-open view;

Figure 10 is the vertical view of Fig. 9;

Figure 11 is that the utility model is used for the testing high voltage turbo blade, the probing shell structural representation of leaf basin;

Figure 12 is the probing shell structural representation that the utility model is used for testing high voltage turbo blade blade back;

Figure 13 is Figure 12 A-A cut-open view;

Figure 14 is the single entry putting type coil synoptic diagram in the utility model probe.

Probe among Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 has a coil outward around the home by magnetic core, magnetic core, is with a shell outward and constitutes.

Embodiment

Example 1: as shown in Figure 1, the utility model has a conduit 1, its rear end is connected with catheter block 2, handle 3a of outside, conduit 1 rear portion assembling, its rear end and catheter block 2 front ends link, and a handle 3b of outside assembling at catheter block 2 rear portions adorns a spring 5 on the periphery of catheter block 2, its front end is fixed on the handle 3a, and the rear end is fixed on the interior Baltimore groove table top of handle 3b front end; There is a pin hole 6 at handle 3b rear portion, assembles a pin 7 in it, is used for fixing the rear end of the extension spring 8 in the conduit 1.Conduit 1 front end can assemble 4, two leads 9 of different probes and pass in the conduit 1 according to test piece position difference, and front end is connected with conductive coil 4b in the probe 4, and the rear end is passed handle 3b end and is connected with plug 10.

Probe when adorning probe 4 among Fig. 1 for the test complete machine, coupled by the rotating shaft 11 of conduit 1 front end.Probe 4 is to be made of magnetic core 4a, coil 4b and shell 4c, aperture 4d is arranged on the shell 4c, be used to connect the front end of extension spring 8, when the test complete machine, when needing probe and conduit 1 to be in line, by handle 3b, compression spring 5 resets, handle 3b and handle 3a are separated, and, make its probe 4 and conduit 1 in line by extension spring 8; When needs make probe 4 and conduit 1 when testing at an angle of 90, by handle 3b, compression spring 5 promotes the duty that extension spring 8 makes its probe 4 and 1 one-tenth 90 ° in conduit.

Example 2 when institute test piece position is groove, with the right-angled trapezium point type capitiform probe among the probe of the cone capitiform among Fig. 3 or Fig. 5, just can be implemented in conduit 1 front end of Fig. 1 by screw fit.

Example 3 when institute test piece position is the hole, as to the detection of 90 Φ 6.7 holes of high-pressure turbine dish and Φ 10.2 hole defects the time, by conduit 1 front end of screw fit in Fig. 1, can be implemented the side point type capitiform probe among Fig. 4.

Example 4: when institute test piece position be blade edge along the time, as the defective on blade leading edge and exhaust limit, the front end of conduit 1 among the brace plane capitiform probe assembling among Fig. 2 and Fig. 1 just can be implemented.

According to the workpiece position difference of being tested, can choose a kind of probing shell among Fig. 6, Fig. 8, Figure 11, Figure 12, magnetic core 4a is packed among the magnetic core hole 4d of probing shell, lead 9 passes wire guide 4e, 4b is connected with coil, the probe that assembles is connected with the conduit of sensor 1 front end, just can practice.

Claims

1 one kinds of EDDY CURRENT sensors, mainly comprise conduit, pass the lead, handle of conduit, the probe that is connected with its catheter proximal end, the probe of fore device that it is characterized in that conduit 1 is 4 removable, unload, and handle through Ion Implantation Strengthening on the magnetic core 4a surface of probe 4.

2 according to the described EDDY CURRENT sensor of claim 1, and it is characterized in that popping one's head in 4 can be plane capitiform, brace plane capitiform, cone capitiform, side point type capitiform, right-angled trapezium point type capitiform.

3 according to the described EDDY CURRENT sensor of claim 1, it is characterized in that magnetic core 4a surface is through injecting Ti+C double ion intensive treatment.

4 according to the described EDDY CURRENT sensor of claim 3, it is characterized in that Ti+C double ion injection rate IR is 2 * 10 ¹⁷Cm ^-2～5.5 * 10 ¹⁷Cm ^-2

5 according to claim 1,2 described EDDY CURRENT sensors, and it is single entry putting type coil that 4 the magnetic core 4a of it is characterized in that popping one's head in goes up what adopt, and the coiling mode is an absolute type.