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Non-contact on-line detection device of micro gap of wire wrapped screen

A wire-wrapped screen tube and detection device technology, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of easy fatigue and error of personnel, inconvenient measurement operation, waste of raw materials, etc., to solve the problem of radial vibration and avoid Blurred imaging and convenient detection

Inactive Publication Date: 2010-12-15
BEIHANG UNIV
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

At present, the screen gap detection mainly adopts the manual plug gauge method for offline measurement. This method has low detection efficiency, poor accuracy, personnel are prone to fatigue and make mistakes, and the measurement operation is inconvenient. At the same time, due to offline measurement, raw materials are wasted.

Method used

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  • Non-contact on-line detection device of micro gap of wire wrapped screen
  • Non-contact on-line detection device of micro gap of wire wrapped screen
  • Non-contact on-line detection device of micro gap of wire wrapped screen

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Experimental program
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Effect test

Embodiment Construction

[0038] like figure 1 As shown, the non-contact online detection device for the tiny gap of the wire-wrapped screen tube of the present invention is characterized in that it includes: an image acquisition unit 1, a laser vibration measurement unit 2, an imaging focusing unit 3 and a host computer unit 4, wherein

[0039] The image acquisition unit 1 realizes the real enlarged imaging of the tiny gap of the screen tube 5 under test, and it includes an area array industrial camera 11, an adapter 12, a microscope lens 13, a spherical integrating light source 14 and an image acquisition card 15; wherein the area array industrial camera 11 is connected to the microscope lens 13 through the transfer interface 12; the spherical integral light source 14 is covered at the front end of the microscope lens 13, and uniformly reflects the light emitted from the bottom, so that the illumination on the surface of the screen tube 5 under test is uniform, and the image of the edge of the gap is cl...

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Abstract

The invention relates to a non-contact on-line detection device of a micro gap of a wire wrapped screen, mainly comprising an image collection unit, a laser vibration measurement unit, an imaging focusing unit and a host computer unit. The device uses the image collection unit to carry out real-time high-quality imaging on the micro gap of the wire wrapped screen, uses the laser vibration measurement unit to solve the influence of radial vibration on an imaging coefficient of the wire wrapped screen in the on-line processing process, calls an imaging coefficient base which is standardized in advance to resolve the micro gap of the wire wrapped screen, calculates a relative error, counts the unqualified rate of gap processing on line and judges whether the wire wrapped gap accords with an expected requirement or not. The imaging focusing unit is suitable for detecting screen gaps of various types. The invention forms a closed loop control processing system by butting an actual wire wrapped screen production line of a factory and has an important significance on on-line revising technological parameters of production, enhancing product indexes, abandoning an unqualified production section at an early date and reducing raw material waste.

Description

technical field [0001] The invention relates to a non-contact measurement technology, in particular to a non-contact on-line detection device for tiny gaps in wire-wrapped screen pipes. Background technique [0002] Wire-wound screen is a mechanical component used in oilfield exploration and development, which plays an important role in crude oil sand control; wire-wound screen is composed of several parallel hubs straightened inside and screen wires wound outside. The millimeter-level tiny gap is an important checkpoint for sand and oil protection; in the actual processing process, the hub is straightened and fixed, and the axial movement and circumferential rotation are performed at a certain speed on the production line, and the screen wire is immediately wound on the hub. Under the action of the welding machine, it is connected with the hub welding. [0003] The non-contact on-line detection of tiny gaps in wire-wrapped screens is a prerequisite for controlling the proc...

Claims

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Application Information

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IPC IPC(8): G01B11/14
Inventor 胡少兴张爱武冯绪勇朱林林夏俞扬
Owner BEIHANG UNIV
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