CN202057757U

CN202057757U - Double-spectrum helmet detector

Info

Publication number: CN202057757U
Application number: CN2011201708194U
Authority: CN
Inventors: 赵顺龙
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2011-05-23
Filing date: 2011-05-23
Publication date: 2011-11-30
Anticipated expiration: 2021-05-23

Abstract

The embodiment of the utility model discloses a double-spectrum helmet detector used for corona detection, which comprises an ultraviolet light path and a visible light path. The ultraviolet light path comprises an ultraviolet object lens, an ultraviolet image intensifier which is connected with the ultraviolet object lens, an ultraviolet filter which is arranged between the ultraviolet object lens and the ultraviolet image intensifier, and a first eye lens with an object plane which is connected with the output plane of the ultraviolet image intensifier. The visible light path comprises an object lens which is used for obtaining the visible image of an external scenery, a second low-light-level image intensifier which is connected with the object lens, a second optical fiber image transmission beam, a second eye lens, and a second spectroscope or a second reflecting mirror which is connected with the second eye lens. The double-spectrum helmet detector has the advantages that the corona phenomenon can be found out at night in time, the detection efficiency is high, the helmet detector is convenient to carry, the accuracy is high, the impact of the external environment is small, the helmet detector can be worn during the maintenance of a power system and the loss of the power system can be greatly avoided.

Description

A kind of pair of spectrum helmet detector

Technical field

The utility model relates to helmet detector manufacturing technology field, more particularly, relates to a kind of pair of spectrum helmet detector.

Background technology

In recent years, China's economy continues the high speed stable development, the electric system scale also constantly enlarges, enforcement along with China's transferring electricity from the west to the east plan, the transmission voltage grade progressively improves, the transmission line of electricity of 500kV and electric substation settle in succession in all parts of the country, and the widespread use of ehv power transmission system safeguards that it is safe, operation more seems particularly important reliably.Corona discharge not only can seriously influence the person and device security, but also can cause a large amount of electric energy losses, therefore detect the position and the power of corona discharge timely and accurately, so that the corona discharge position is overhauled, the reliability service that guarantees electric system, the damage that prevents power equipment and minimizing personal injury all there is important meaning.

The generation of corona is because rough conductor produces uneven electric field, around uneven electric field, near the little electrode of radius-of-curvature, when voltage is elevated to certain value, because free of air will discharge, forms corona.Because the peripheral electric field at corona is very weak, it is free not bump, and the peripheral charged particle of corona substantially all is an electron ion, and these ions have just formed corona discharge current.Briefly, the little conductor electrode of radius-of-curvature has just produced corona to atmospherical discharges.

Corona discharge in the electric system makes a large amount of losses of electric energy, and the electromagnetic pulse of its generation can be disturbed radio and high-frequency communication, makes power equipment produce edge effect, destroys insulator, and then causes conductive line surfaces to be corroded, and descended to the serviceable life of lead.Therefore, have only the position of finding corona discharge as early as possible, could reduce loss, avoid accident the trouble unit on-call maintenance.

When night power transmission and transformation line being patrolled and examined, mainly adopt infrared telescope, infrared camera or ultraviolet camera etc. in the prior art, but, little, the weak strength of the target of corona discharge, visualization is difficulty relatively, though can adopt ultraviolet camera also can detect the corona activity under the faint situation of solar radiation at night, but this detection process operation is difficulty relatively, and efficient is low, and the expense costliness; And, because what infrared equipment detected is the heating phenomenon, when adopting infrared equipment to detect corona phenomenon, power circuit or equipment are because corona and well damage, adopt said method to be difficult in and detect corona night timely, and then can not in time safeguard carrying out electric system, cause the loss that is difficult to avoid.

Based on above reason, need a kind of being convenient to badly and under the more weak situation of light at night, in time detect the equipment of corona.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of pair of spectrum helmet detector, be applied to the detection of the corona at night, this equipment can normally be looked under the situation of thing at night, find corona phenomenon timely, the detection efficiency height, and this helmet detector is easy to carry, accuracy rate is high, be subjected to the influence of external environment little, in to the maintenance process of electric system, also can wear simultaneously, avoid the loss of electric system greatly.

For achieving the above object, the utility model embodiment provides following technical scheme:

The utility model embodiment discloses a kind of pair of spectrum helmet detector, is applied to corona and detects, and comprises ultraviolet light path and visible light light path, and wherein, described ultraviolet light path comprises:

Ultraviolet object lens is used to absorb the light signal of corona;

With the ultraviolet imaging enhancer that described ultraviolet object lens links to each other, described ultraviolet object lens images on the test surface of described ultraviolet imaging enhancer;

Ultraviolet filter between described ultraviolet object lens and described ultraviolet imaging enhancer;

First eyepiece, the object plane of described first eyepiece links to each other with the output face of described ultraviolet imaging enhancer, and human eye is seen the virtual image of described corona by described first eyepiece, and the virtual image of described corona and described corona are positioned at same position;

Described visible light light path comprises:

Object lens are used to absorb the visible images of extraneous scenery;

Second gleam image intensifier that links to each other with described object lens, described object lens image on the test surface of described second gleam image intensifier;

Second optical fiber image transmission beam and second eyepiece, the input face end of described second optical fiber image transmission beam links to each other with the output face of described second gleam image intensifier, and its output face end links to each other with described second eyepiece, as the object plane of described second eyepiece;

Second spectroscope or second catoptron that link to each other with described second eyepiece, the optical axis of described second spectroscope or second catoptron and described second eyepiece has angle, light after described second spectroscope or second mirror reflects enters human eye, and the virtual image of the described extraneous scenery that human eye is seen and described extraneous scenery are positioned at same position.

Preferably, described ultraviolet imaging enhancer comprises:

With the ultraviolet detector that described ultraviolet object lens links to each other, described ultraviolet object lens images on the test surface of described ultraviolet detector;

First gleam image intensifier, the input face of described first gleam image intensifier links to each other with the output face of described ultraviolet detector.

Preferably, the object distance of described ultraviolet object lens is the 0.3m-infinite distance, and/or the image distance of described first eyepiece is the 0.3m-infinite distance; The object distance of described object lens is the 0.3m-infinite distance, and/or the image distance of described second eyepiece is the 0.3m-infinite distance.

Preferably, also comprise: first optical fiber image inverter between the input face of the output face of described ultraviolet imaging enhancer and described first eyepiece.

Preferably, the virtual image of the described corona seen by described first eyepiece of human eye is specially and the big upright virtual image such as described corona; And/or described human eye sees that by described second eyepiece virtual image of described extraneous scenery is specially and the big upright virtual image such as described extraneous scenery.

Compared with prior art, technique scheme has the following advantages:

The technical scheme that the utility model embodiment is provided, helmet detector is applied to the testing process of corona, this helmet detector adopts the two-way light path, the light signal of the ultraviolet object lens picked-up corona in the ultraviolet light path, filter out the light signal of other wave band except that ultraviolet band by ultraviolet filter, adopt ultraviolet imaging enhancer that the light signal of the corona that absorbs is carried out the spectrum conversion afterwards and strengthen, be converted into the stronger visible light signal of light intensity, make the virtual image that to observe corona with the pairing human eye of ultraviolet light path by first eyepiece.And, the lll night vision technology is applied to the visible light light path, make the background of corona enter the another human eye after low-light strengthens, the user just can see corona image and background image thereof simultaneously like this, thereby the user can judge the particular location of corona discharge easily.

Because the main ultraviolet band that adopts carries out the detection of corona, be subjected to extraneous light to influence very little, therefore human eye can be seen the virtual image of corona clearly, improved the detection accuracy rate of corona, and because helmet detector itself is easy to carry, only need that it is worn on head and upward get final product, thereby liberated both hands.Simultaneously, because the use of lll night vision technology, make also not influence when the wearer can see corona under the more weak situation of light at night and normally look thing, therefore the maintainer can wear this helmet detector at any time and carrying out service work, thereby can find corona phenomenon timely and overhaul timely, avoid the loss of electric system greatly.

Description of drawings

Shown in accompanying drawing, above-mentioned and other purpose, feature and advantage of the present utility model will be more clear.Reference numeral identical in whole accompanying drawings is indicated identical part.Painstakingly do not draw accompanying drawing, focus on illustrating purport of the present utility model by physical size equal proportion convergent-divergent.

Fig. 1 is the ultraviolet light line structure synoptic diagram of the disclosed pair of spectrum helmet of the utility model embodiment detector;

Fig. 2 is the visible light light channel structure synoptic diagram of the disclosed pair of spectrum helmet of the utility model embodiment detector.

Embodiment

Just as described in the background section, adopt observation method of the prior art, be difficult to find timely corona phenomenon, inventor of the present utility model discovers, the reasons for the above problems are, because the corona discharge initial stage can only produce very a spot of photon, be that luminous intensity is very weak, cause being difficult to observe at corona discharge initial stage naked eyes, when naked eyes can be seen the corona discharge situation, often the damage of power equipment is very serious, in addition, though adopt infrared equipments such as infrared telescope and infrared camera also can detect the corona fault since the infrared equipment actual detection to be the phenomenon of generating heat, when detecting corona phenomenon, power circuit or equipment are because of the corona well damage.

Based on above reason, the inventor considers, because the wavelength coverage during corona discharge probably is between the 230nm-405nm, contained most ultraviolet band, and, therefore can utilize ultraviolet band to detect corona phenomenon owing to the object of launching ultraviolet light at night is less, and since night visible light light also a little less than, normally look thing for what do not influence the user, also need increase the visible light light path, so that in time detect corona phenomenon and can in time overhaul at night.Simultaneously, owing to characteristics such as itself helmet detection system are easy to carry, the inventor thinks can use ultraviolet detector in helmet detection system, so that observe corona phenomenon timely.

It more than is the application's core concept, below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization under the situation of the utility model intension, so the utility model is not subjected to the restriction of following public specific embodiment.

Secondly, the utility model is described in detail in conjunction with synoptic diagram, when the utility model embodiment is described in detail in detail; for ease of explanation; the sectional view of expression device architecture can be disobeyed general ratio and be done local the amplification, and described synoptic diagram is example, and it should not limit the scope of the utility model protection at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.

The structural drawing of the disclosed pair of spectrum helmet of present embodiment detector as depicted in figs. 1 and 2, this helmet detector can be applicable to corona and detects, concrete, this pair spectrum helmet detector comprises ultraviolet light path and visible light light path, wherein, Fig. 1 is the structural representation of described ultraviolet light path, and Fig. 2 is the structural representation of visible light light path.

Referring to Fig. 1, described ultraviolet light path comprises:

Ultraviolet object lens 11 can be used to absorb the light signal of corona to ultraviolet light imaging in the present embodiment;

The ultraviolet imaging enhancer that links to each other with described ultraviolet object lens 11, described ultraviolet object lens 11 images on the test surface of described ultraviolet imaging enhancer, this ultraviolet imaging enhancer can carry out the light signal of corona of picked-up the spectrum conversion and strengthen the intensity of light signal, the light signal of the corona that light intensity is more weak is converted to the stronger visible light signal of light intensity, makes human eye can observe the corona discharge phenomenon;

Ultraviolet filter 12 between described ultraviolet object lens 11 and described ultraviolet imaging enhancer, filter other light signal except that ultraviolet band, reduce of the influence of the light signal of other wave band, absorb the light signal of corona to greatest extent, so that subsequent treatment to testing result;

First eyepiece 16, the object plane of described first eyepiece 16 links to each other with the output face of described ultraviolet imaging enhancer, and human eye is seen the virtual image of described corona by described first eyepiece 16, and the virtual image of described corona and described corona are positioned at same position;

Wherein, described ultraviolet imaging enhancer comprises:

With the ultraviolet detector 13 that described ultraviolet object lens 11 links to each other, described ultraviolet object lens 11 images on the test surface of described ultraviolet detector 13, that is to say, the test surface of described ultraviolet detector 13 is the test surface of described ultraviolet imaging enhancer;

First gleam image intensifier 14, the input face of described first gleam image intensifier 14 links to each other with the output face of described ultraviolet detector 13.

What obtain at the test surface of ultraviolet detector 13 is the real image of corona, at this moment, intensity through the light signal of the corona of ultraviolet detector 13 is still very weak, human eye is difficult to observe, therefore, output face at ultraviolet detector 13 connects first gleam image intensifier 14, amplifies with the intensity to the light signal of corona, so that follow-up observation.

Referring to Fig. 2, described visible light light path comprises:

Object lens 21 are used to absorb the visible images of extraneous scenery;

Second gleam image intensifier 22 that links to each other with described object lens 21, described object lens 21 image on the test surface of described second gleam image intensifier 22;

Second optical fiber image transmission beam 25 and second eyepiece 24, the input face end of described second optical fiber image transmission beam 25 links to each other with the output face of described second gleam image intensifier 22, and its output face end links to each other with described second eyepiece 24, as the object plane of described second eyepiece 24;

Second spectroscope or second catoptron 26 that link to each other with described second eyepiece 24, described second spectroscope or second catoptron 26 have angle with the optical axis of described second eyepiece 24, enter human eye through described second spectroscope or second catoptron, 26 light reflected, the virtual image of the described extraneous scenery that human eye is seen and described extraneous scenery are positioned at same position.

Described optical fiber image transmission beam is the fibre bundle that together is made of the multifiber stationary arrangement, it can will have the image planes of certain area by every optical fiber, pointwise will reach the other end as a end by fibre bundle, and middle no longer through being similar to the such signal conversion process of optical communication.Can pass through the twisted fiber coherent fiber bundle in the present embodiment, change the upright and handstand situation of the virtual image that eyepiece becomes, therefore, not need to be provided with in addition again the upset that optical fiber image inverter is realized the virtual image in the present embodiment.

Described spectroscope is also referred to as semi-transparent semi-reflecting lens, can reflect through the light that eyepiece was handled and enter human eye, so that human eye is seen the virtual image of corona at the corona discharge place, the virtual image that is about to the corona after this helmet detector is handled overlaps with the background of the generation corona discharge of reality, to reach the purpose of seeing the virtual image of corona in actual electrical corona place, with the accuracy rate that guarantees to survey.And, because spectroscopical use, if light intensity allows, when making human eye can see the corona virtual image, also do not influence and normally look thing, the maintainer can wear this helmet detector at any time and carry out service work, thereby can find corona phenomenon timely and overhaul timely, avoid the loss of electric system greatly.

Because the helmet detector in the present embodiment is mainly used in the detection of corona at night, therefore, above-mentioned ultraviolet light path part only need realize that the detection of halation gets final product, therefore, can adopt spectroscope also can adopt catoptron in the present embodiment, the observation of scenery is given the visible light light path and is surveyed to external world.

Need to prove, what see by first eyepiece 16 is the virtual image that corona stands upside down, if there is certain deviation in the sight line when corona occurrence positions and people are at eye level, then the occurrence positions of the corona seen of human eye will deviation occur by occurrence positions actual with it, is not easy to very much the observation of scenery to external world.Therefore, for the virtual image that human eye is seen identical with real image, and be positioned at same position, disclosed helmet detector also comprises in the present embodiment, is positioned at first optical fiber image inverter 15 between the input face of the output face (being the output face of described first gleam image intensifier 14) of described ultraviolet imaging enhancer and described first eyepiece 16.Optical fiber image inverter is 180 ° the optical element of image transmitted can being reversed.

Increase after described first optical fiber image inverter 15, the virtual image of the described corona that human eye is seen by described first eyepiece is specially and the big upright virtual image such as described corona, so that the human eye observation of scenery and corona phenomenon to external world.For the ease of distinguishing the material object and the virtual image, the material object and the virtual image are separately drawn among Fig. 1, during actual observation, material object overlaps with the virtual image.

In addition, need to prove, in the present embodiment for the ease of detection to corona, and after detecting corona discharge, can in time keep in repair, need in maintenance process, still can clearly see corona phenomenon and extraneous scenery, and, the virtual image that produces the equipment of corona should coincide with the position of former material object with the virtual image of the corona that observes, therefore, need make ultraviolet object lens 11 identical with the object distance of object lens 21, first eyepiece 16 is identical with the image distance of second eyepiece 24, and the object lens object distance should be identical with the image distance of eyepiece in same light path.

Preferably, the object distance of ultraviolet object lens described in the present embodiment 11 is the 0.3m-infinite distance, and/or the image distance of described first eyepiece 16 is the 0.3m-infinite distance, and the object distance of described object lens 21 is the 0.3m-infinite distance, and/or the image distance of described second eyepiece 24 is the 0.3m-infinite distance; Preferred, the object distance of described ultraviolet object lens 11 is the 0.5m-infinite distance, and/or the image distance of described first eyepiece 16 is the 0.5m-infinite distance, and the object distance of described object lens 21 is the 0.5m-infinite distance, and/or the image distance of described second eyepiece 24 is the 0.5m-infinite distance.

In order to achieve the above object, the control assembly of two kinds of light paths specifically has 2 kinds of designs, the one, if the ultraviolet light path is controlled by different control assemblies respectively with the visible light light path, then need to make the controlled variable of control assembly of the two identical, so that the object distance of two-way light path is identical with image distance, the 2nd, if ultraviolet light path and visible light light path are simultaneously by a control assembly control, then need to adjust the controlled variable of this control assembly to the two-way light path, make its controlled variable identical, so that the object distance of two-way light path is identical with image distance to the two-way light path.

Need to prove, do not limit the size of the angle of spectroscope in the visible light light path or catoptron and eyepiece optical axis in the present embodiment, as long as can make the light after spectroscope or mirror reflects can enter human eye, concrete angle can be adjusted according to the concrete ornaments position of each parts in the helmet-mounted display system, preferably, the optical axis of described second spectroscope or second catoptron and described second eyepiece is 30 ° of-60 ° of angles, preferred, the optical axis of described second spectroscope or second catoptron and described second eyepiece is 45 ° of angles.

Because the light intensity of described corona discharge is very little, and the helmet detector in the present embodiment is primarily aimed at the detection at night, and therefore, preferred, second spectroscopical reflectivity is greater than transmissivity described in the present embodiment.

Two spectrum helmet detectors of the testing process that is applied to corona that the utility model embodiment is provided, survey the night that mainly can be applicable to corona.This helmet detector adopts the two-way light path, the light signal of the ultraviolet object lens picked-up corona in the ultraviolet light path, filter out the light signal of other wave band except that ultraviolet band by ultraviolet filter, adopt ultraviolet imaging enhancer that the light signal of the corona that absorbs is carried out the spectrum conversion afterwards and strengthen, be converted into the stronger visible light signal of light intensity, make the virtual image that to observe corona with the pairing human eye of ultraviolet light path by first eyepiece.And, the lll night vision technology is applied to the visible light light path, make the background of corona enter the another human eye after low-light strengthens, the user just can see corona image and background image thereof simultaneously like this, thereby the user can judge the particular location of corona discharge easily.

And, owing to adopt ultraviolet band to carry out the detection of corona in the present embodiment, therefore, still can operate as normal under bad weather condition such as greasy weather, accurately the location is applicable to the fault detect at night of high-voltage transforming system and transmission line of electricity etc. fully.

What describe in detail among each embodiment of the utility model only is the light path part of this helmet detector, it will be appreciated by those skilled in the art that, be interconnective between above-mentioned each optical element by certain physical construction, and, except that light path part, this helmet detector also should comprise circuit part, is used to each element power supply, as is the circuit and the power supply of power supplies such as ultraviolet object lens, eyepiece, image intensifier.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to embodiment illustrated herein, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. a two spectrum helmet detector is applied to corona and detects, and it is characterized in that comprise ultraviolet light path and visible light light path, wherein, described ultraviolet light path comprises:

Ultraviolet object lens is used to absorb the light signal of corona;

Described visible light light path comprises:

Object lens are used to absorb the visible images of extraneous scenery;

2. according to claim 1 pair of spectrum helmet detector is characterized in that described ultraviolet imaging enhancer comprises:

3. according to claim 1 pair of spectrum helmet detector is characterized in that the object distance of described ultraviolet object lens is the 0.3m-infinite distance, and/or the image distance of described first eyepiece is the 0.3m-infinite distance; The object distance of described object lens is the 0.3m-infinite distance, and/or the image distance of described second eyepiece is the 0.3m-infinite distance.

4. according to claim 1,2 or 3 described pairs of spectrum helmet detectors, it is characterized in that, also comprise: first optical fiber image inverter between the input face of the output face of described ultraviolet imaging enhancer and described first eyepiece.

5. according to claim 4 pair of spectrum helmet detector is characterized in that, the virtual image of the described corona that human eye is seen by described first eyepiece is specially and the big upright virtual image such as described corona; And/or described human eye sees that by described second eyepiece virtual image of described extraneous scenery is specially and the big upright virtual image such as described extraneous scenery.