CN113092846A - Wire fixing device based on insulated wire voltage measurement and voltage measurement method - Google Patents

Abstract

The invention discloses a wire fixing device based on insulated wire voltage measurement, which comprises a seat body, a first wire clamping measuring arm and a second wire clamping measuring arm, wherein a through hole which is communicated up and down is formed in the seat body and used for fixing a voltage measuring micro-needle device; the lower end of the first wire clamping measuring arm and the lower end of the second wire clamping measuring arm are hinged with the top of the seat body respectively, and the upper end of the first wire clamping measuring arm is hinged with the upper end of the second wire clamping measuring arm; the pedestal is the tubular structure, and the breach that is used for installing first card line measuring arm and second card line measuring arm is seted up at the top of pedestal. The invention has the beneficial effects that: the lead fixing device is hinged to the base body through the two wire clamping measuring arms, the micro-needle device is installed in the base body, the measured lead is clamped between the two wire clamping measuring arms for limiting, and then the micro-needle penetrates through the insulating layer of the measured lead and then is in contact with the metal wire core inside the measured lead, so that the measured lead is prevented from deviating and shaking in the voltage measuring process, and the measuring accuracy is guaranteed.

Description

Wire fixing device based on insulated wire voltage measurement and voltage measurement method

Technical Field

The invention relates to the electric power engineering measurement technology, in particular to a wire fixing device and a voltage measurement method based on insulated wire voltage measurement.

Background

The measurement operation of voltage and current is the basic measurement operation with the highest operating frequency in power engineering measurement, power science research and power production work. The current measurement operation realizes the direct current measurement on the insulated conductor through the split core type current transformer, and brings great convenience to the power measurement work. Patents ZL201611179847.6 "a voltage measuring microneedle device" and ZL201710175251.7 "an insulated wire voltage tester" have been granted, and direct voltage measurement on an insulated wire can be realized by "a voltage measuring microneedle device made of a carbon nanomaterial or a high-conductivity high-mechanical-property copper alloy".

However, there is no wire fixing structure dedicated for the above-mentioned micro probe device, and when the above-mentioned micro probe device is used to measure the voltage of the insulated wire, the measured wire swings indefinitely, and the measurement result has a large deviation, which brings great inconvenience to the actual operation process. Therefore, how to fix the insulated wire in the voltage measurement process is a key factor affecting the accuracy of the measurement result.

Disclosure of Invention

The invention aims to provide a multifunctional conducting wire fixing device based on insulated conducting wire voltage measurement and a voltage measuring method aiming at the defects of the prior art, and the multifunctional conducting wire fixing device and the voltage measuring method are matched with the existing voltage measuring micro-needle device for use, so that the purpose of conveniently and accurately measuring the voltage of an insulated conducting wire is achieved.

The technical scheme adopted by the invention is as follows: a lead fixing device based on voltage measurement of an insulated lead comprises a base body, a first lead clamping measuring arm and a second lead clamping measuring arm, wherein a through hole which is communicated up and down is formed in the base body and used for fixing a voltage measuring micro-needle device; the lower end of the first wire clamping measuring arm and the lower end of the second wire clamping measuring arm are hinged to the top of the seat body respectively, and the upper end of the first wire clamping measuring arm is hinged to the upper end of the second wire clamping measuring arm.

According to the scheme, the base body is of a cylindrical structure, and the top of the base body is provided with a notch for mounting the first wire clamping measuring arm and the second wire clamping measuring arm; the first wire clamping measuring arm and the second wire clamping measuring arm are rod pieces with the same structure; the two wire clamping measuring arms are respectively hinged with the base body through a bolt A; the upper ends of the two wire clamping measuring arms are hinged through a bolt B; when the upper ends of the two wire clamping measuring arms are not hinged and fixed, the upper ends of the two wire clamping measuring arms can be respectively turned over to be in a horizontal or vertical state around the lower ends.

According to the scheme, the hinge point of the first wire clamping measuring arm and the seat body and the hinge point of the second wire clamping measuring arm and the seat body are respectively positioned at the two ends of the diameter of the top port of the through hole; the first wire clamping measuring arm and the second wire clamping measuring arm are perpendicular to each other.

According to the scheme, length scale marks are arranged in the length direction of the first wire clamping measuring arm and/or the second wire clamping measuring arm.

According to the scheme, sectional area scale marks are arranged in the length direction of the first clamp line measuring arm and/or the second clamp line measuring arm, and the zero point position of the sectional area scale marks is located at the hinge point of the upper end of the clamp line measuring arm.

According to the scheme, a level gauge is arranged on the first wire clamping measuring arm and/or the second wire clamping measuring arm; the outer wall of the seat body is provided with height scale marks along the axis direction.

According to the scheme, the transparent protractor is arranged at the hinged position of the upper ends of the first wire clamping measuring arm and the second wire clamping measuring arm.

The invention also provides an insulated wire voltage measuring method, which comprises the following steps:

step one, providing a voltage measuring microneedle device and the lead fixing device;

step two, testing whether the circuit of the microneedle device is normal;

fixing the tested lead at one tested point on the lead fixing device, and connecting the micro-needle device with the lead fixing device:

step four, repeating the step three, and mounting a measured lead at another measured point by using the microneedle device and the lead fixing device;

after puncturing the insulation layer of the tested lead, the micro-needle of the micro-needle device is contacted with the conductive wire in the tested lead, so that the neon tube on the display circuit stably emits light;

and step six, connecting a voltmeter, reading and recording after the number is stable.

The invention has the beneficial effects that: 1. the lead fixing device is hinged to the base by utilizing the two wire clamping measuring arms, the micro-needle device is arranged in the base, the measured lead is clamped between the two wire clamping measuring arms for limiting, and then the micro-needle penetrates through the insulating layer of the measured lead and then is contacted with the metal wire core in the measured lead, so that the measured lead is prevented from deviating and shaking in the voltage measuring process, and the measuring precision is ensured; 2. according to the invention, the length scales and the sectional area scales are designed on the two wire clamping measuring arms, so that other parameters of the measured wire can be obtained while measuring voltage, and then whether the measured wire is qualified or not is judged; 3. the invention can be used for measuring length, angle, leveling and the like, and has various functions; 4. the invention has simple structure, reasonable design and low cost.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic connection diagram of the first wire clamping measuring arm and the second wire clamping measuring arm in this embodiment.

Fig. 3 is a schematic connection diagram of a conventional voltage measurement microneedle device and the present embodiment.

FIG. 4 is a schematic diagram of the embodiment for measuring length.

FIG. 5 is a diagram illustrating the angle measurement according to the fourth embodiment.

Fig. 6 is a first application diagram of the sixth embodiment.

Fig. 7 is a second application diagram of the sixth embodiment.

FIG. 8 is a schematic diagram of an application of the fifth embodiment.

Wherein: 1. a first wire clamping measuring arm; 2. a second wire clamping measuring arm; 3. a level gauge; 4. a base body; 5. a wire to be tested; 5.1, an insulating layer; 5.2, a metal wire core; 6. microneedles; 7. tightly pushing the platform; 8. a screw push rod; 9. protecting the cylinder chamber; 10. a bolt A; 11. a bolt B; 12. a test pin; 13. length scale lines; 14. sectional area scale marks; 15. a plug-in connector; 16. a neon tube.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

As shown in fig. 1, the lead fixing device based on voltage measurement of an insulated lead includes a base 4, a first wire clamping measuring arm 1 and a second wire clamping measuring arm 2, wherein the base 4 is provided with a through hole penetrating up and down for fixing a voltage measuring micro-needle device; the lower end of the first wire clamping measuring arm 1 and the lower end of the second wire clamping measuring arm 2 are hinged to the top of the seat body 4 respectively, and the upper end of the first wire clamping measuring arm 1 is hinged to the upper end of the second wire clamping measuring arm 2.

In the invention, a seat body 4 is of a cylindrical structure, and the top of the seat body 4 is provided with a notch for installing a first wire clamping measuring arm 1 and a second wire clamping measuring arm 2; the first wire clamping measuring arm 1 and the second wire clamping measuring arm 2 are rod pieces with the same structure; the two wire clamping measuring arms are respectively hinged with the seat body 4 through a bolt B11; the upper ends of the two wire-clamping measuring arms are hinged through a bolt A10. When the upper ends of the two wire clamping measuring arms are not hinged and fixed, the upper ends of the two wire clamping measuring arms can be respectively turned over to be in a horizontal or vertical state around the lower ends.

Preferably, the hinge point of the first wire clamping measuring arm 1 and the seat body 4 and the hinge point of the second wire clamping measuring arm 2 and the seat body 4 are respectively positioned at two ends of the diameter of the top port of the through hole; the first wire clamping measuring arm 1 and the second wire clamping measuring arm 2 are perpendicular to each other; as shown in fig. 2, length scales 13 (for measuring the radius of the measured conductor 5, and the zero point position of the scale can be set at the hinge point at the upper end of the card line measuring arm) are provided in the length direction of the first card line measuring arm 1 and/or the second card line measuring arm 2.

Preferably, the first chuck wire measuring arm 1 and/or the second chuck wire measuring arm 2 are/is provided with a cross-sectional area scale mark 14 in the length direction, and the zero point position of the cross-sectional area scale mark is located at the upper end hinge point of the chuck wire measuring arm.

Preferably, a level 3 is mounted on the first and/or second wire- clamping measuring arm 1, 2 for assisting in leveling or leveling.

Preferably, the outer wall of the seat body 4 is provided with a height scale mark along the axis direction.

Preferably, a transparent protractor is installed at the hinge joint of the upper ends of the first wire clamping measuring arm 1 and the second wire clamping measuring arm 2.

Example one

The lead fixing device can be used for fixing the insulated lead when measuring voltage, and the specific method for measuring the voltage of the insulated lead comprises the following steps:

step one, providing the lead fixing device and the voltage measuring micro-needle device, wherein the voltage-resistant grade of the voltage measuring micro-needle device is matched with the insulated lead of the measured point.

The voltage between two points in the circuit can be measured by a micro-needle device, a measured lead 5 at a measured point is provided with the micro-needle device, and each micro-needle device is provided with one lead fixing device. As shown in fig. 3, a conventional voltage measuring microneedle device (hereinafter referred to as the microneedle device) generally includes a protective cylinder 9, a spiral push rod 8, a microneedle 6, a measuring body, and a display circuit; the spiral push rod 8 is arranged in the protective barrel chamber 9 and can axially move along the inner wall of the protective barrel chamber 9; the micro-needle 6 is electrically connected with the measuring main body, the measuring main body is arranged inside the spiral push rod 8, the measuring main body is led out of the tail part of the protective barrel chamber 9 through a test lead to form a display loop, and a neon tube 16 is connected to the display loop; the microneedle 6 is vertically installed in the center of the top of the spiral push rod 8, and the microneedle 6 can rotate upwards by a section of displacement after rotating the spiral push rod 8 and extend out of the jacking platform 7 of the protection barrel chamber 9, puncture the insulating layer 5.1 of the tested lead 5 and contact the metal wire core 5.2 in the tested lead 5. The two measured points are electrically connected with an instrument (voltmeter) through a measuring main body and a plug 15 to form a loop to measure voltage; the top of the protective barrel chamber 9 is provided with a tightly-pushing platform 7 for tightly pushing the measured lead 5, and the front end of the tightly-pushing platform 7 is provided with a pinhole for the micro-needle 6 to pass through.

Step two, testing whether the microneedle device circuit is normal: cleaning the surface of the tested lead 5 and wiping off the surface; and (3) wearing insulating gloves with corresponding voltage grades to test the voltage measuring microneedle device on the electrified bare conductor to ensure that a display circuit is normal.

Fixing a measured lead 5 of one measured point on the lead fixing device, and connecting the microneedle device with the lead fixing device: integrally pushing the lead fixing device at one end of the tested lead 5 to the position above the microneedle device at the end, opening a bolt B11 at the lower end of the two wire clamping measuring arms, clamping the tested lead 5 into the right angle position at the upper ends of the two wire clamping measuring arms, and installing a bolt B11; the protection barrel chamber 9 is arranged in the seat body 4 and fixed, and the position of the protection barrel chamber 9 is adjusted to enable the jacking table 7 to jack the lower part of the insulated wire.

And step four, repeating the step three, and mounting the measured lead 5 at the other measured point by using the microneedle device and the lead fixing device.

Step five, the micro-needle 6 of the micro-needle device is contacted with the conductive wire inside the tested lead 5 by piercing the insulating layer 5.1 of the tested lead 5, so that the neon tube 16 on the display circuit stably emits light: the two micro-needles 6 are respectively and spirally pushed upwards by the spiral push rod 8 (the micro-needles 6 can extend out of the tightening platform 7 of the protection barrel chamber 9 after the spiral push rod 8 rotates upwards for a period of displacement, puncture the insulating layer 5.1 of the tested lead 5 and contact with the conductive wire inside the tested lead 5) until the neon tube 16 on the corresponding display circuit stably emits light (the distance needing to be pushed can be preliminarily judged by the scale of the base body 4 in the rotating process of the spiral push rod 8), the radius of the tested lead 5 is obtained by the scale on the two clamp line measuring arms, and other related parameters are calculated.

Step six, connecting a voltmeter, reading and recording: and selecting a voltmeter or other measuring devices with proper measuring range, directly connecting the microneedle device with the voltmeter or other measuring devices, and reading and recording after the number is stabilized.

After the measurement is finished, firstly, the measurement lead and the instrument at the tail end of the protection barrel chamber 9 are detached, then the pushing rod is reversely rotated backwards to enable the micro-needle 6 to retract to the initial position, then the outlet (the pinhole of the jacking platform 7) of the micro-needle 6 is covered with the rubber plug, and finally the lead fixing device is taken down. The lead fixing device can prevent the tested lead 5 from shifting in the process of puncturing the micro-needle 6, ensure that the micro-needle 6 passes through the insulating layer 5.1 of the tested lead 5 from the middle of the tested lead 5 and is in good contact with an internal metal conductor, and ensure accurate and reliable measurement results.

In the invention, a first wire clamping measuring arm 1 and a second wire clamping measuring arm 2 are designed to be vertically hinged, a measured wire 5 is clamped in the hinged position of the first wire clamping measuring arm and the second wire clamping measuring arm, the measured wire 5 is tangent to the two wire clamping measuring arms, parameters such as radius, sectional area and the like of the measured wire 5 can be directly obtained or derived and calculated through scales on the two wire clamping measuring arms, and the pushing distance (the thickness of an insulating layer 5.1 of the measured wire 5) at the moment when a display circuit is bright is subtracted from the maximum outer diameter of the measured wire 5 to obtain the corresponding metal inner diameter and the corresponding sectional area, wherein the specific method comprises the following steps: rotating the pushing device of the micro-needle 6, wherein the diameter of the measured lead 5 is read as A for the first time, then rotating the pushing device of the micro-needle 6, reading as B again when the neon tube 16 of the display circuit emits light, and using A-B as the pushing distance and the thickness of the insulating layer 5.1, wherein A-2 (A-B) is the diameter of the metal wire core 5.2; meanwhile, the corresponding wire clamping measuring arm is also provided with the radius, the sectional area and the diameter of the corresponding insulated wire metal wire core 5.2, and then the radius, the sectional area and the diameter are compared with the national standard of a standard wire, so that whether the section of the measured wire 5 is qualified or not can be judged, the 'water cargo' wire is removed, and the safe and economic operation of electric power is ensured.

Example two

The lead fixing device can also be used as a horizontal tester for checking whether the tested lead 5 is horizontally erected or whether a certain position is horizontal to the ground or vertical to a reference object. (1) As the horizontal tester, the principle of whether the tested lead 5 is horizontally erected is checked: the wire clamping measuring arm with the built-in level gauge (the level gauge can be a bubble gauge) is taken down and placed in a position parallel to the measured lead 5, and if the bubble is centered, the measured lead is horizontal. (2) Detecting whether a certain place is in ground level principle: after the wire clamping cylinder arm is matched with the plane, whether the air bubble at the middle part of the wire clamping measuring cylinder arm is positioned at the center or not is observed, and whether the position is horizontal to the ground or not is judged through a parallel law. (3) Vertical principle to reference: the base of the wire clamping cylinder arm is parallel or coincident with a certain position to be measured, when the base body 4 of the wire clamping cylinder arm is viewed by aiming, when no light passes through the wire clamping cylinder arm, the coincidence is realized, whether the position is parallel can be judged by utilizing the parallel principle, then whether the position is vertical is realized by observing the relative position of the air bubble in the center of the wire clamping cylinder arm, and when the air bubble is positioned in the center, the position is vertical to a reference object.

EXAMPLE III

The wire fixing device can also be used as a ruler for measuring dimensions (length, width and height), and as shown in fig. 4, the bolt at the upper end of the wire clamping measuring arm is drawn out, and the wire clamping measuring arm is rotated to be vertical. Example four

If a transparent plastic measuring device is arranged at the hinged position of the two wire clamping measuring arms of the wire fixing device, as shown in fig. 5, the wire fixing device is used for measuring an angle; the compass can also be used as a compass and can measure the turning radius or the curvature radius of a lead or an arc.

EXAMPLE five

The lead fixing device is also used for testing equal-height surfaces or leveling in electric power engineering, decoration engineering or pipeline engineering, can be used for on-site leveling of equal-height planes on the surface of a tested lead or a tested object, and can be used for determining whether the lead is positioned at the same height and the same plane; even positions with unequal heights or unevenness can be tested, so that the problem can be solved in a targeted manner. The two line clamping measuring arms are both in horizontal positions but not on the same straight line, the detected surface is compared with a standard surface formed by the two line clamping measuring arms, and whether the detected surface is an equal-height surface or not is easily judged according to a solid geometry principle, so that leveling is realized. When the two wire clamping measuring arms are vertical, the positions with unequal heights or different levels can be easily found out. Leveling principle: the line clamping measuring arm is disassembled into the form shown in fig. 8 (length scale lines are arranged on the two line clamping measuring arms), then the line clamping measuring arm on any side is placed on the plane, if the plane is seen to be light-transmitting, the place where light can be transmitted is lower than other places, the plane is not flat, and if the plane is not light-transmitting, the plane is flat, so that the place where the plane is too high or lower can be found.

EXAMPLE six

The lead fixing device can also be provided with a measuring needle 12 (with high hardness) which can extend and retract along the length direction of the wire clamping measuring arm on the two wire clamping measuring arms, and when the inner diameter of a measured object is large, the opening is very small, and the thickness of the measuring arm is larger than the diameter of the opening, the inner diameter and the depth of the narrow object can be measured by using the measuring needle 12. As shown in fig. 6, when measuring the inner diameters of the black box and the narrow space, the two wire-clamping measuring arms are taken down to make the two arms at an included angle of 60 degrees, and then the retractable high-hardness needle between the two wire-clamping measuring arms is pushed out from the wire-clamping measuring arms, so that the inner diameters of the black box or the narrow space can be measured according to the properties of the equilateral triangle. Of course, it is also easy to measure the depth of a small space, and when two measurements are made vertically (as shown in FIG. 7), the measured depth is true, without slope error.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A lead fixing device based on voltage measurement of an insulated lead is characterized by comprising a base body, a first lead clamping measuring arm and a second lead clamping measuring arm, wherein the base body is internally provided with a through hole which is vertically communicated and used for fixing a voltage measuring micro-needle device; the lower end of the first wire clamping measuring arm and the lower end of the second wire clamping measuring arm are hinged to the top of the seat body respectively, and the upper end of the first wire clamping measuring arm is hinged to the upper end of the second wire clamping measuring arm.

2. The wire fixing device as claimed in claim 1, wherein the base body is a cylindrical structure, and a notch for installing the first wire clamping measuring arm and the second wire clamping measuring arm is formed at the top of the base body; the first wire clamping measuring arm and the second wire clamping measuring arm are rod pieces with the same structure; the two wire clamping measuring arms are respectively hinged with the base body through a bolt A; the upper ends of the two wire clamping measuring arms are hinged through a bolt B; when the upper ends of the two wire clamping measuring arms are not hinged and fixed, the upper ends of the two wire clamping measuring arms can be respectively turned over to be in a horizontal or vertical state around the lower ends.

3. The wire fixing device as claimed in claim 1, wherein the hinge point of the first wire-clamping measuring arm and the seat body, and the hinge point of the second wire-clamping measuring arm and the seat body are respectively located at two ends of the diameter of the top port of the through hole; the first wire clamping measuring arm and the second wire clamping measuring arm are perpendicular to each other.

4. The lead fixation device of claim 1, wherein the first and/or second wire measuring arms are provided with length scale markings along the length thereof.

5. The wire fixing device according to claim 1, wherein a cross-sectional area scale is provided in a length direction of the first and/or second chuck wire measuring arms, and a zero point position of the cross-sectional area scale is located at an upper end hinge point of the chuck wire measuring arms.

6. The lead fixation device of claim 1, wherein a level is mounted on the first and/or second wire-clamping measuring arms; the outer wall of the seat body is provided with height scale marks along the axis direction.

7. The wire fixing device as claimed in claim 1, wherein a transparent protractor is installed at a hinge of upper ends of the first and second wire clamping measuring arms.

8. An insulated wire voltage measurement method, characterized in that the method comprises the steps of:

providing a voltage measuring microneedle device and the lead fixing device according to any one of claims 1 to 7;

step two, testing whether the circuit of the microneedle device is normal;

fixing the tested lead at one tested point on the lead fixing device, and connecting the micro-needle device with the lead fixing device:

step four, repeating the step three, and mounting a measured lead at another measured point by using the microneedle device and the lead fixing device;

after puncturing the insulation layer of the tested lead, the micro-needle of the micro-needle device is contacted with the conductive wire in the tested lead, so that the neon tube on the display circuit stably emits light;

and step six, connecting a voltmeter, reading and recording after the number is stable.

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