CN113124787B - A test device for X-ray cable deflectometer error - Google Patents
A test device for X-ray cable deflectometer error Download PDFInfo
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- CN113124787B CN113124787B CN202110388687.0A CN202110388687A CN113124787B CN 113124787 B CN113124787 B CN 113124787B CN 202110388687 A CN202110388687 A CN 202110388687A CN 113124787 B CN113124787 B CN 113124787B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
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- Electromagnetism (AREA)
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- Analysing Materials By The Use Of Radiation (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
一种X射线电缆测偏仪误差的测试装置，从后端至前端依次包括：可转手柄、滑轮套、螺纹套、连接头、校准器，滑轮套靠近前后两端处分别套设至少一组定心滑轮组件；可转手柄的前端伸进滑轮套里面，位于前端的螺纹段从滑轮套里面伸出，位于后端的可转手柄卡在滑轮套外面；可转手柄的螺纹段的内螺纹与连接头的一端相连接，可转手柄的外螺纹与螺纹套相配合；连接头的另一端连接到校准器；校准器，包括：单独金属棒、金属带绝缘层同心棒、金属带绝缘层偏心棒三种规格。本发明针对电缆金属芯直径、绝缘层壁厚和偏心度误差三个数值进行测试，从而保证X射线电缆测偏仪的校准的精确性。
A test device for the error of an X-ray cable deflectometer comprises, from the rear end to the front end, a rotatable handle, a pulley sleeve, a threaded sleeve, a connector, and a calibrator. The pulley sleeve is respectively provided with at least one set of centering pulley assemblies near the front and rear ends; the front end of the rotatable handle extends into the pulley sleeve, the threaded section at the front end extends from the pulley sleeve, and the rotatable handle at the rear end is stuck outside the pulley sleeve; the internal thread of the threaded section of the rotatable handle is connected to one end of the connector, and the external thread of the rotatable handle is matched with the threaded sleeve; the other end of the connector is connected to the calibrator; the calibrator comprises three specifications: a single metal rod, a metal concentric rod with an insulating layer, and a metal eccentric rod with an insulating layer. The present invention tests three values of the cable metal core diameter, the insulating layer wall thickness, and the eccentricity error, thereby ensuring the accuracy of the calibration of the X-ray cable deflectometer.
Description
[ Field of technology ]
The invention relates to the technical field of testing devices of wire and cable detection instruments, in particular to a testing device of an X-ray cable polarization analyzer error.
[ Background Art ]
In the cable structure, the non-concentricity of the middle metal core conductor and the insulating layer is called as cable eccentricity, the cable eccentricity is an important technical index of cable quality, and the thin wall side of the insulating layer with overlarge eccentricity can be burnt out, so that potential safety hazards exist.
Conventionally, the eccentric measurement of the cable adopts section slice detection, namely, a certain section slice of the cut cable is detected under an imager, a projector or a tool microscope, but the slice measurement is an off-line measurement mode and post-measurement, and if the detection is unqualified, the whole bundle of cables needs to be scrapped, so that great waste is caused.
The X-ray cable polarization analyzer is a high-tech combined system, integrates the X-ray chromatography technique, the high-speed scanning technique and the advanced signal processing technique, and is mainly used for measuring the wall thickness, the eccentricity, the ellipticity, the cable diameter and the like of each layer of the multi-layer insulating cable on a crosslinking production line.
However, the current domestic calibration research on the X-ray cable polarization analyzer is almost blank, and if the measurement data of the X-ray cable polarization analyzer is inaccurate, the whole or even whole batch of cable products are directly unqualified, so that serious potential safety hazards and economic losses are caused.
The calibration of the X-ray cable polarization analyzer is only completed by a manufacturer in China at present during maintenance, and the defects that 1, the manufacturer only tests one value of the diameter measurement error of the cable metal core of the X-ray cable polarization analyzer through an outer diameter test rod, then the X-ray cable polarization analyzer is calibrated according to the error value, and the two values of the wall thickness and the eccentricity error of the cable insulation layer are not tested. For cable factories, the most concerned is wall thickness and eccentricity errors, but manufacturers cannot calibrate the two values of the wall thickness and the eccentricity errors, so that the problem of inaccurate measurement data still exists even if the X-ray cable polarization analyzer is maintained and calibrated by the manufacturers at present. 2. When the manufacturer is in maintenance, the sleeve part connected with the cable equipment at the front end of the X-ray cable polarization analyzer needs to be removed and no cable is needed to be completed in the sleeve part, so that great trouble is caused to the user of the cable plant, and the cable traction threading and sleeve connection installation are equivalent to equipment reinstallation, so that time and labor are wasted, and the cost is high.
In view of the above, the present inventors have made intensive studies on the defects of the prior art.
[ Invention ]
The invention aims to solve the technical problem of providing a convenient and quick testing device for errors of an X-ray cable polarization analyzer, which can test three numerical values of the diameter of a cable metal core, the wall thickness of an insulating layer and the error of an eccentricity, thereby ensuring the accuracy of the calibration of the X-ray cable polarization analyzer.
The invention is realized in the following way:
The testing device for the error of the X-ray cable polarization analyzer sequentially comprises a rotatable handle, a pulley sleeve, a thread sleeve, a connector and a calibrator from the rear end to the front end, wherein the pulley sleeve is sleeved with at least one group of centering pulley assemblies near the front end and the rear end respectively;
The rotatable handle is of a hollow structure and sequentially comprises a handle section, an extension section and a thread section from the rear end to the front end, wherein the outer diameter of the handle section is larger than the outer diameters of the extension section and the thread section;
The front end of the rotatable handle extends into the pulley sleeve, the thread section at the front end extends out of the pulley sleeve, and the handle section of the rotatable handle at the rear end is clamped outside the pulley sleeve;
The internal thread of the thread section of the rotatable handle is connected with one end of the connector, and the external thread is matched with the thread sleeve;
The calibrator is of a hollow structure and is used for testing errors of an X-ray cable deflection analyzer, and comprises three specifications of an independent metal rod, a metal belt insulating layer concentric rod and a metal belt insulating layer eccentric rod, wherein the specification of the connector is adapted to the specification of the calibrator;
Each group of centering pulley components comprises a first lantern ring and a second lantern ring which are arranged side by side, wherein at least three hinging seats are uniformly arranged on the first lantern ring at intervals, at least three upright posts with gaps in the middle parts are arranged on the second lantern ring corresponding to the first lantern ring, a connecting rod is arranged between each hinging seat and the corresponding upright post, one end of each connecting rod is hinged with the hinging seat, the other end of each connecting rod penetrates through the gap in the middle part of the upright post to extend out to the other side, and a pulley is connected at the end part of each connecting rod;
during testing, the calibrator at the front end of the testing device stretches into the X-ray cable polarization analyzer to be tested, the pulley sleeve with the centering pulley assembly is just positioned in the sleeve at the front end of the X-ray cable polarization analyzer to be tested, and each group of pulleys of the centering pulley assembly are abutted against the inner wall of the sleeve so as to ensure that the rotatable handle in the pulley sleeve is kept concentric with the sleeve.
The connector is characterized in that one end of the connector is provided with an external thread, the other end of the connector is provided with an internal thread, the external thread at one end of the connector is connected with the internal thread of the threaded section of the rotatable handle in a matched mode, and the internal thread at the other end of the connector is connected with the calibrator.
The invention has the advantages that 1, the invention can test three values of the diameter of the cable metal core, the wall thickness of the insulating layer and the eccentricity error, ensures the accuracy of the calibration of the X-ray cable polarization analyzer, and meets the actual requirements of the cable plant using instruments. 2. By adopting the testing device, the centering pulley automatically centers in the sleeve at the front end of the X-ray cable deflection meter, the eccentric meter can be calibrated without disassembling the sleeve, the whole testing device is of a hollow structure, a cable can pass through the testing device, the X-ray cable deflection meter can be calibrated without drawing out the cable, the dismounting and mounting cost is saved, and the calibration is more convenient and faster.
[ Description of the drawings ]
The invention will be further described with reference to the accompanying drawings, in conjunction with examples.
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic exploded view of the present invention.
Fig. 3 is a schematic structural view of the centering sheave assembly in the present invention.
Fig. 4 is a schematic perspective view of the present invention.
Fig. 5 is a schematic view of the use state of the present invention.
[ Detailed description ] of the invention
As shown in figures 1 to 5, the testing device for the error of the X-ray cable polarization analyzer sequentially comprises a rotatable handle 1, a pulley sleeve 2, a thread sleeve 3, a connector 4 and a calibrator 5 from the rear end to the front end, wherein a group of centering pulley assemblies 6 are sleeved at the positions, close to the front end and the rear end, of the pulley sleeve 2.
The rotatable handle 1 is of a hollow structure and sequentially comprises a handle section 11, an extension section 12 and a thread section 13 from the rear end to the front end, wherein the outer diameter of the handle section 11 is larger than the outer diameters of the extension section 12 and the thread section 13, and the thread section 13 is provided with external threads and internal threads.
The front end of the rotatable handle 1 extends into the pulley sleeve 2, a threaded section 13 at the front end extends out of the pulley sleeve 2, and a handle section 11 of the rotatable handle 1 at the rear end is clamped outside the pulley sleeve 2.
The internal thread of the threaded section 13 of the rotatable handle is connected to one end of the connector 4, the external thread cooperates with the threaded sleeve 2 to limit axial play thereof, and the other end of the connector 4 is connected to the calibrator 5.
The connector 4 is of a hollow structure, one end of the connector 4 is provided with external threads, the other end of the connector 4 is provided with internal threads, the external threads at one end of the connector 4 are connected with the internal threads of the threaded section 13 of the rotatable handle 1 in a matched manner, and the internal threads at the other end of the connector are connected with the calibrator 5.
The calibrator 5 is of a hollow structure and is used for testing errors of the X-ray cable deflection analyzer 100, and comprises three specifications of an independent metal rod, a metal belt insulating layer concentric rod and a metal belt insulating layer eccentric rod. The specifications of the connector 4 are adapted to the specifications of the calibrator 5.
As shown in FIG. 3, the centering pulley assembly 6 comprises a first collar 61 and a second collar 62 which are arranged side by side, six hinging seats 63 are uniformly arranged on the first collar 51 at intervals, six upright posts 64 with gaps in the middle are arranged on the second collar 62 corresponding to the first collar, a connecting rod 65 is arranged between each hinging seat 63 and the corresponding upright post 64, one end of each connecting rod 65 is hinged with the hinging seat 63, the other end of each connecting rod 65 penetrates through the gap in the middle of the upright post 64 to extend out to the other side and is connected with a pulley 66 at the end, a spring 67 is further arranged in the gap in the middle of each upright post 64, one end of the spring 67 is fixedly connected to the bottom of the upright post 64, and the other end of the spring 67 is connected with the bottom of the connecting rod 65 extending into the gap.
As shown in fig. 5, during testing, the calibrator 5 at the front end of the present invention is extended into the X-ray cable deflection meter 100 to be tested, the pulley sleeve 2 with two centering pulley assemblies 6 is just positioned in the sleeve 102 at the front end of the X-ray cable deflection meter 100 to be tested, and the pulley 66 of each centering pulley assembly 6 abuts against the inner wall of the sleeve 102 to ensure that the rotatable handle 1 in the pulley sleeve 2 is kept concentric with the sleeve 102.
The pulley 66 is in an open state under the action of a spring 67, the distance between the two groups of centering pulley assemblies 6 is adjustable, the threaded sleeve 3 is matched on a threaded section 13 (external threads) of the rotatable handle 1 through internal threads, so that the rotatable handle 1 and the pulley sleeve 2 can only rotate but not axially move in series, the connector 4 is of a hollow structure, one end of the connector is connected with the internal threads of the threaded section 13 of the rotatable handle 1, the other end of the connector is connected with the calibrator 5, the calibrator 5 is used for measuring errors of a polarization analyzer, the calibrator is of a hollow structure, and the calibrator is connected with the rotatable handle 1 through the connector 4 and is provided with a single metal rod, a metal belt insulating layer concentric rod and a metal belt insulating layer eccentric rod. The specific operation comprises the following steps:
step 1, fixing a centering pulley assembly 6 and locking a threaded sleeve 2;
Step 2, selecting a calibrator 5 and a connector 4 with corresponding specification, and connecting the calibrator 5 to the rotatable handle 1;
Step 3, allowing the cable 200 to pass through the whole testing device;
step 4, penetrating the testing device from the sleeve 102, automatically centering the testing device in the sleeve 102 by the centering pulley assembly 6, and suspending the front calibrator 5 in the X-ray cable polarization analyzer 100;
starting an X-ray cable polarization analyzer 100, setting the X-ray cable polarization analyzer 100 into an independent diameter measurement mode when the calibrator 5 is an independent metal rod, wherein the difference between the diameter measured by the X-ray cable polarization analyzer 100 and the actual diameter value of the metal rod is a metal core measurement error, setting the X-ray cable polarization analyzer 100 into a single-layer PE measurement mode when the calibrator 5 is a metal belt insulating layer concentric rod, and setting the difference between the thickness of an insulating layer measured by the X-ray cable polarization analyzer 100 and the actual thickness of the concentric rod as a wall thickness measurement error;
And 6, extracting the testing device, replacing the front end calibrator according to the requirement, and repeating the steps 2,3, 4 and 5 to measure through the X-ray cable polarization analyzer 100 again to obtain the measurement errors of the metal cores with different diameters, the measurement errors of the wall thicknesses and the measurement errors of the eccentric values.
The invention can test three values of the diameter of the cable metal core, the wall thickness of the insulating layer and the eccentricity error, ensures the accuracy of the calibration of the X-ray cable polarization analyzer, and meets the actual requirements of the cable plant on the use instruments. By adopting the testing device, the centering pulley assembly automatically centers in the sleeve at the front end of the X-ray cable deflection meter, the eccentric meter can be calibrated without disassembling the sleeve, the whole testing device is of a hollow structure, a cable can pass through, the X-ray cable deflection meter can be calibrated without removing the cable, the dismounting and mounting cost is saved, and the calibration is more convenient and faster.
The foregoing is merely illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The testing device for the error of the X-ray cable polarization analyzer is characterized by sequentially comprising a rotatable handle, a pulley sleeve, a thread sleeve, a connector and a calibrator from the rear end to the front end, wherein the pulley sleeve is sleeved with at least one group of centering pulley assemblies near the front end and the rear end respectively;
The rotatable handle is of a hollow structure and sequentially comprises a handle section, an extension section and a thread section from the rear end to the front end, wherein the outer diameter of the handle section is larger than the outer diameters of the extension section and the thread section;
The front end of the rotatable handle extends into the pulley sleeve, the thread section at the front end extends out of the pulley sleeve, and the handle section of the rotatable handle at the rear end is clamped outside the pulley sleeve;
The internal thread of the thread section of the rotatable handle is connected with one end of the connector, and the external thread is matched with the thread sleeve;
The calibrator is of a hollow structure and is used for testing errors of an X-ray cable deflection analyzer, and comprises three specifications of an independent metal rod, a metal belt insulating layer concentric rod and a metal belt insulating layer eccentric rod, wherein the specification of the connector is adapted to the specification of the calibrator;
Each group of centering pulley components comprises a first lantern ring and a second lantern ring which are arranged side by side, wherein at least three hinging seats are uniformly arranged on the first lantern ring at intervals, at least three upright posts with gaps in the middle parts are arranged on the second lantern ring corresponding to the first lantern ring, a connecting rod is arranged between each hinging seat and the corresponding upright post, one end of each connecting rod is hinged with the hinging seat, the other end of each connecting rod penetrates through the gap in the middle part of the upright post to extend out to the other side, and a pulley is connected at the end part of each connecting rod;
during testing, the calibrator at the front end of the testing device stretches into the X-ray cable polarization analyzer to be tested, the pulley sleeve with the centering pulley assembly is just positioned in the sleeve at the front end of the X-ray cable polarization analyzer to be tested, and each group of pulleys of the centering pulley assembly are abutted against the inner wall of the sleeve so as to ensure that the rotatable handle in the pulley sleeve is kept concentric with the sleeve.
2. The device for testing errors of an X-ray cable polarization analyzer according to claim 1, wherein one end of the connector is provided with external threads, the other end of the connector is provided with internal threads, the external threads at one end of the connector are connected with the internal threads of the threaded section of the rotatable handle in a matched manner, and the internal threads at the other end of the connector are connected with the calibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110388687.0A CN113124787B (en) | 2021-04-12 | 2021-04-12 | A test device for X-ray cable deflectometer error |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110388687.0A CN113124787B (en) | 2021-04-12 | 2021-04-12 | A test device for X-ray cable deflectometer error |
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| CN113124787A CN113124787A (en) | 2021-07-16 |
| CN113124787B true CN113124787B (en) | 2025-03-21 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215217533U (en) * | 2021-04-12 | 2021-12-17 | 福建省计量科学研究院（福建省眼镜质量检验站） | A test device for X-ray cable polarimeter error |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH399837A (en) * | 1961-10-17 | 1965-09-30 | Heli Coil Corp | Method and tool for applying a wire helix forming an internal and external thread to a shaft with an external thread |
| US7159776B2 (en) * | 2005-01-05 | 2007-01-09 | Dell Products L.P. | System and method for optical medium label alignment |
| US10663280B2 (en) * | 2018-03-23 | 2020-05-26 | General Electric Company | System and method for measuring eccentricity of gas turbine casing relative to rotor |
| CN108592834B (en) * | 2018-06-20 | 2023-10-31 | 国网安徽省电力有限公司电力科学研究院 | Measuring device for thickness and inner diameter and outer diameter of cable insulating layer |
| CN209148822U (en) * | 2018-11-14 | 2019-07-23 | 天津市津海天源电力技术有限公司 | A kind of novel hand-held cable partial discharge tester |
| CN110440727A (en) * | 2019-08-27 | 2019-11-12 | 重庆泰山电缆有限公司 | A kind of reference scan method of derivometer |
| CN110560303B (en) * | 2019-09-08 | 2021-02-05 | 东北石油大学 | Pipe diameter self-matching type pipeline inner wall atomizing and spraying device |
| CN112268504B (en) * | 2020-09-14 | 2022-05-24 | 西安理工大学 | Online detection device and method for cable eccentricity instrument |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215217533U (en) * | 2021-04-12 | 2021-12-17 | 福建省计量科学研究院（福建省眼镜质量检验站） | A test device for X-ray cable polarimeter error |
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