CN209961159U

CN209961159U - Electric eddy current probe calibrator

Info

Publication number: CN209961159U
Application number: CN201920894173.0U
Authority: CN
Inventors: 孙广哲; 韩爽; 袁存谦; 陈力; 樊培利; 亓振华
Original assignee: State Energy Group Shandong Shiheng Thermal Power Co Ltd
Current assignee: State Energy Group Shandong Shiheng Thermal Power Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-01-17
Anticipated expiration: 2029-06-14

Abstract

An eddy current probe calibrator comprises a mounting plate, wherein two fixing supports are vertically arranged on one side of the mounting plate, a digital display micrometer is arranged on the two fixing supports, a first positioning seat and a second positioning seat are vertically arranged on the other side of the mounting plate, positioning holes are formed in the first positioning seat and the second positioning seat, positioning devices are arranged on the first positioning seat and the second positioning seat, the bottom ends of the positioning holes are in a V shape, each positioning device comprises a vertically arranged positioning rod, through holes matched with the positioning rods are formed in the positioning seats, arc-shaped pressing plates are fixedly arranged at the bottom ends of the positioning rods, the arc-shaped pressing plates are located in the positioning holes, the top ends of the positioning rods penetrate through the positioning seats and are provided with pull rings, the whole structure of the calibrator is simple and easy to carry, the digital display micrometer is adopted as a calibrator, the calibration precision is ensured, the real-time, the working efficiency is improved.

Description

Electric eddy current probe calibrator

Technical Field

The utility model belongs to the technical field of the calibration equipment technique and specifically relates to an eddy current probe check gauge.

Background

Axial displacement is called shaft displacement again, namely the displacement of the large shaft along the direction of the shaft, the change of the relative position of the rotating part and the static part of the steam turbine can be reflected by the axial displacement, under the normal working state, the shaft displacement needs to be maintained within a certain range, and the real-time detection of the shaft displacement is needed, so as to avoid the condition that the shaft displacement is too large and the operation cannot be carried out, the current detection device mostly adopts an eddy current probe, and the requirement on the distance detection precision of the eddy current probe is very high, the current precision verification operation is mostly complex and tedious, the used equipment is not convenient to carry, and the work efficiency of the detection operation is reduced.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a novel axial displacement probe check gauge, overall structure is simple easily to carry, and easily operates, and the reading of being convenient for, the check-up result is accurate reliable, has improved precision check-up operating efficiency before the use.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to an eddy current probe calibrator, which comprises a mounting plate, wherein two fixing supports are vertically arranged on one side of the mounting plate, a digital display micrometer is arranged on the two fixing supports, a first positioning seat and a second positioning seat are vertically arranged on the other side of the mounting plate, positioning holes are arranged on the first positioning seat and the second positioning seat, positioning devices are arranged on the first positioning seat and the second positioning seat, the bottom ends of the positioning holes are V-shaped, the positioning devices comprise vertically arranged positioning rods, through holes matched with the positioning rods are arranged on the positioning seats, arc-shaped pressing plates are fixedly arranged at the bottom ends of the positioning rods, the arc-shaped pressing plates are positioned in the positioning holes, the top ends of the positioning rods penetrate through the positioning seats and are provided with pull rings, the peripheries of the positioning rods positioned in the mounting grooves are provided with positioning convex edges, springs are arranged on the positioning convex edges, the springs are positioned at the peripheries of the positioning rods, the, the digital display micrometer is close to the one end of first reference point and installs the detection disc, and the adjust knob department of the digital display micrometer other end installs the ring gear, is equipped with first motor on the mounting panel, installs the gear with ring gear matched with on the output shaft of first motor. Furthermore, the first positioning seat is close to the digital display micrometer, the digital display micrometer is kept away from the second positioning seat, the sliding block is fixedly installed at the bottom end of the second positioning seat, a sliding way matched with the sliding block is formed in the installation plate, a lead screw is installed in the sliding way and matched with the sliding block, a second motor is arranged on the installation plate, an output shaft of the second motor is connected with the lead screw, the second motor is started to drive the lead screw to rotate, the sliding block can move along the sliding way, and therefore the position of the second positioning seat on the installation plate can be adjusted. Further, rubber pads are arranged on the periphery of the positioning hole and the bottom of the arc-shaped pressing plate.

The utility model has the advantages of: a novel axial displacement probe check gauge, overall structure is simple and easily carry, adopts the digital display micrometer as the check-up utensil, has both guaranteed the check-up precision, the real-time reading of still being convenient for, operating procedure is also simple relatively, has shortened the time of check-up operation greatly, has improved work efficiency. The positioning seat on the mounting plate can adapt to probes with different lengths and diameter types, the universality of use is improved, the rubber pads are arranged at the positions matched and fixed with the probes, the probes can be fixed more firmly, and the probes cannot be damaged.

Drawings

Fig. 1 is a schematic three-dimensional structure of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a sectional view taken along line B-B of FIG. 3;

fig. 6 is a schematic view of fig. 4 after the probe is mounted.

In the figure, a mounting plate 2 is fixed on a support 3 of a digital display micrometer 4, a first positioning seat 5, a second positioning seat 6, a positioning rod 8, a through hole 9, an arc-shaped pressing plate 10, a pull ring 11, a mounting groove 12, a positioning convex edge 13, a spring 14, a detection disc 15, a gear 16, a first motor 17, a gear 18, a sliding block 19, a lead screw 21, a second motor 22 and a rubber pad are arranged in the mounting groove 12.

Detailed Description

An eddy current probe check gauge, as shown in fig. 1, including mounting panel 1, at the vertical two fixed bolsters 2 that are equipped with in one side of mounting panel 1, install digital display micrometer 3 on two fixed bolsters 2, at the vertical first positioning seat 4 and the second positioning seat 5 that is equipped with of opposite side of mounting panel 1, all seted up locating hole 6 and installation positioner on first positioning seat 4 and the second positioning seat 5, be used for placing axle displacement probe in the locating hole 6. As shown in fig. 4, the bottom end of the positioning hole 6 is V-shaped to be suitable for fixing probes of different diameter types, the positioning device includes a vertically arranged positioning rod 7, a through hole 8 matched with the positioning rod 7 is formed in the positioning seat, an arc-shaped pressing plate 9 is fixedly installed at the bottom end of the positioning rod 7, the arc-shaped pressing plate 9 is located in the positioning hole 6, and the top end of the positioning rod 7 penetrates through the positioning seat and is provided with a pull ring 10. The periphery of through-hole 8 is equipped with mounting groove 11, and the locating lever 7 periphery that is located mounting groove 11 is equipped with the protruding edge 12 of location, installs spring 13 on protruding edge 12 of location, and spring 13 is located the periphery of locating lever 7, spring 13 has the trend that makes locating lever 7 move down to arc 9 and locating hole 6 bottom and contact all the time. The digital display micrometer 3 is close to the one end of first reference point 4 and installs detection disc 14, and the adjust knob department of the digital display micrometer 3 other end installs ring gear 15, is equipped with first motor 16 on the mounting panel 1, installs on the output shaft of first motor 16 with ring gear 15 matched with gear 17, starts first motor 16 and can drive gear 17 and rotate to adjust digital display micrometer 3.

When the eddy current probe calibrator is used for calibrating a probe, firstly, the pull ring 10 is lifted upwards, the elastic force of the spring 13 is overcome, the positioning rod 7 is moved upwards, as shown in fig. 6, the probe to be calibrated penetrates into the two positioning holes 6, the pull ring 10 is loosened to fix the probe, then, the first motor 16 is started, the digital display micrometer 3 is adjusted to enable the detection disc 14 to gradually approach the probe until the distance display device connected with the probe displays 0, the zero point of the probe is determined, then, the reset key of the digital display micrometer 3 is pressed down, the display numerical value of the digital display micrometer 3 is also 0, then, the first motor 16 is reversely rotated, the detection disc 14 is gradually far away from the probe, each displacement is 50 micrometers, and the display numerical value on the distance display device and the digital display micrometer 3 after each movement is recorded, whether the display reading after each displacement is consistent or not is contrasted, if the readings are consistent, the accuracy of the probe is proved to meet the requirement, and if the readings are not consistent, the detection accuracy of the probe on the distance is proved to be not met the requirement.

Preferably, in order to enable the positioning seat to adapt to probes with different lengths so as to be fixed, as shown in fig. 2, the first positioning seat 4 is close to the digital display micrometer 3, the second positioning seat 5 is far away from the digital display micrometer 3, as shown in fig. 5, a sliding block 18 is fixedly installed at the bottom end of the second positioning seat 5, a sliding way 19 matched with the sliding block 18 is formed in the installation plate 1, a lead screw 20 is installed in the sliding way 19, and the lead screw 20 is matched with the sliding block 18. Be equipped with second motor 21 on mounting panel 1, the output shaft of second motor 21 links to each other with lead screw 20, starts second motor 21 and drives lead screw 20 rotatory, enables slider 18 and removes along slide 19 to the position of adjustment second positioning seat 5 on mounting panel 1, through the distance between adjustment second positioning seat 5 and first positioning seat 4, can select best clamping position according to the length of the probe that awaits measuring, with the intensity and the stability of guaranteeing its fixing.

Preferably, the rubber pads 22 are arranged on the periphery of the positioning hole 6 and the bottom of the arc-shaped pressing plate 9, so that the probe to be detected can be fixed more firmly, and the periphery of the probe cannot be damaged.

Technical scheme of the utility model not be restricted to the utility model the within range of embodiment. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. An eddy current probe calibrator is characterized by comprising a mounting plate (1), wherein two fixing supports (2) are vertically arranged on one side of the mounting plate (1), a digital display micrometer (3) is mounted on the two fixing supports (2), a first positioning seat (4) and a second positioning seat (5) are vertically arranged on the other side of the mounting plate (1), positioning holes (6) and positioning devices are respectively formed in the first positioning seat (4) and the second positioning seat (5), the bottom ends of the positioning holes (6) are V-shaped, each positioning device comprises a vertically arranged positioning rod (7), through holes (8) matched with the positioning rods (7) are formed in the positioning seats, arc-shaped pressing plates (9) are fixedly mounted at the bottom ends of the positioning rods (7), the arc-shaped pressing plates (9) are located in the positioning holes (6), the top ends of the positioning rods (7) penetrate through the positioning seats and pull rings (10) are mounted on the positioning seats, the periphery of through-hole (8) is equipped with mounting groove (11), and locating lever (7) periphery that is located mounting groove (11) is equipped with location protruding edge (12), installs spring (13) on location protruding edge (12), and spring (13) are located the periphery of locating lever (7), spring (13) have all the time and make locating lever (7) move down to the trend that arc clamp plate (9) and locating hole (6) bottom contacted, digital display micrometer (3) are close to the one end of first locating seat (4) and install detection disc (14), and ring gear (15) are installed to the adjust knob department of digital display micrometer (3) other end, are equipped with first motor (16) on mounting panel (1), install on the output shaft of first motor (16) with ring gear (15) matched with gear (17).

2. The eddy current probe calibrator according to claim 1, wherein the first positioning seat (4) is close to the digital display micrometer (3), the second positioning seat (5) is far away from the digital display micrometer (3), a sliding block (18) is fixedly mounted at the bottom end of the second positioning seat (5), a sliding way (19) matched with the sliding block (18) is formed in the mounting plate (1), a lead screw (20) is mounted in the sliding way (19), the lead screw (20) is matched with the sliding block (18), a second motor (21) is arranged on the mounting plate (1), an output shaft of the second motor (21) is connected with the lead screw (20), the second motor (21) is started to drive the lead screw (20) to rotate, the sliding block (18) can move along the sliding way (19), and therefore the position of the second positioning seat (5) on the mounting plate (1) is adjusted.

3. The eddy current probe calibrator according to claim 1, wherein rubber pads (22) are arranged on the periphery of the positioning hole (6) and at the bottom of the arc-shaped pressing plate (9).