Corona discharge observer

Abstract

The utility model discloses a corona discharge observer which comprises a grip, the top of the grip is connected with a lens seat, and the lens seat is provided with an ultraviolet image intensifier, a magnifying glass and a screen which are sequentially arranged along a straight line. The corona discharge observer provided by the utility model is convenient to carry, and can carry out large-scale investigation on areas where corona discharge possibly exists in a short time.

Description

Technical Field

[0001] The utility model relates to the field of corona discharge, in particular to a corona discharge observation instrument. Background Art

[0002] Corona discharge refers to the local self-sustaining discharge of a gas medium in an inhomogeneous electric field. It is the most common form of gas discharge. If the discharge lasts for a long time, it will affect the safety of the high-voltage power transmission and transformation system. Therefore, it is necessary to promptly identify the location of the corona discharge and repair it.

[0003] Corona discharge emits ultraviolet light, so it can be determined by detecting whether ultraviolet light exists in the high-voltage power transmission and transformation system. The principle of the current corona discharge recorder is as follows: the incident light passes through the beam splitter and is divided into visible light and ultraviolet light. The visible light passes through the visible light camera module, and the ultraviolet light passes through the filter, the full-day-blind ultraviolet imaging module and the CCD detector in turn. Finally, the two are synthesized through the image fusion module. The structure is complex, the device is large, and it is not convenient to carry. It is difficult to observe a large area in a short time. Utility Model Content

[0004] The utility model aims to provide a corona discharge observation instrument which is convenient to carry and can conduct a large-scale inspection of areas where corona discharge may exist in a short time.

[0005] To achieve the above object, the utility model provides a corona discharge observation instrument, including a handle, the top of the handle is connected with a lens seat, and the lens seat is provided with an ultraviolet image intensifier, a magnifying glass and a screen arranged in sequence along a straight line.

[0006] As a further improvement of the utility model, an ultraviolet lens is provided on the lens seat, and the ultraviolet lens, the ultraviolet image intensifier and the magnifying glass are arranged in sequence.

[0007] As a further improvement of the present invention, the lens mount is provided with a switching structure that allows the solar-blind filter and the low-transmittance filter to cooperate with the ultraviolet image intensifier respectively.

[0008] As a further improvement of the utility model, the switching structure includes a first bracket movably connected to the lens holder, and the first bracket is provided with a first day-blind filter, a low-transmittance filter and an empty frame arranged in parallel.

[0009] As a further improvement of the utility model, a second bracket is movably connected to the lens holder, and the second bracket, the first bracket and the ultraviolet image intensifier are arranged in sequence; and the second bracket is provided with at least two filter installation positions arranged in parallel.

[0010] As a further improvement of the present invention, a first slide groove and a second slide groove are provided on the lens mount, the first bracket is slidably connected to the first slide groove, the second bracket is slidably connected to the second slide groove, and a sliding positioning structure is provided between the first bracket and the first slide groove and between the second bracket and the second slide groove.

[0011] As a further improvement of the utility model, the sliding positioning structure includes a card block and a positioning groove that are snap-fitted together, one of the card block and the positioning groove is arranged on the inner side wall of the first slide groove and the second slide groove, and the other is arranged on the first bracket and the second bracket.

[0012] Beneficial Effects

[0013] Compared with the prior art, the advantages of the corona discharge observation instrument of the utility model are:

[0014] 1. The observation instrument can be handheld. Since it does not use a beam splitter, a photography module, or an image fusion module, it is light and easy to carry. It can conduct a large-scale investigation of areas where corona discharge may exist in a short time. When observing at night, there is no need to use a filter. The ultraviolet light of the corona discharge passes through the ultraviolet image intensifier, and the image is magnified by the magnifying glass and projected on the front of the screen. The observer sees the enhanced and magnified image of the ultraviolet light of the corona discharge on the back of the screen.

[0015] 2. Since the ultraviolet light of corona discharge is weak light, in daytime or in a bright light environment, by operating the first bracket, the first day-blind filter can filter out the strong light, ensuring that the ultraviolet light image of corona discharge projected on the screen can be clearly seen by the observer.

[0016] 3. In order to distinguish the specific location of corona discharge, the first bracket can be switched to a low-transmittance filter. The light of the objects in the environment is observed through the low-transmittance filter and the ultraviolet image intensifier in turn to form a black and white image of the object on the screen. The personnel can determine the specific location of the corona discharge by comparing the images.

[0017] 4. By setting up a second bracket and utilizing the filter on the second bracket, the purpose of the observer can be expanded.

[0018] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front cross-sectional view of the corona discharge observation instrument of Example 1;

[0021] Figure 2 This is a structural diagram of the sliding positioning structure of Example 1;

[0022] Figure 3 Schematic diagram of the driving mechanism of Example 2. DETAILED DESCRIPTION

[0023] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] Example 1

[0025] The specific implementation of the utility model is as follows Figure 1 to Figure 2 As shown, a corona discharge observation instrument includes a handle 10, the top of the handle 10 is connected to a lens holder 1, and the lens holder 1 is provided with an ultraviolet image intensifier 3, a magnifying glass 4 and a screen 5 which are arranged in sequence along a straight line.

[0026] An ultraviolet lens 2 is arranged on the lens seat 1, and the ultraviolet lens 2, the ultraviolet image intensifier 3 and the magnifying glass 4 are arranged in sequence.

[0027] The lens holder 1 is provided with a switching structure that allows the solar blind filter 61 and the low-transmittance filter 62 to cooperate with the ultraviolet image intensifier 3 respectively.

[0028] The switching structure includes a first bracket 6 movably connected to the lens holder 1, and the first bracket 6 is provided with a first solar blind filter 61, a low-transmittance filter 62 and an empty frame 63 arranged in parallel. The first solar blind filter 61 is a band-pass solar blind filter with a passing wavelength of 275nm. The passing wavelength of the low-transmittance filter 62 includes long-wave ultraviolet rays, short-wave visible light, etc.

[0029] The lens holder 1 is also movably connected with a second bracket 7, and the second bracket 7, the first bracket 6 and the ultraviolet image intensifier 3 are arranged in sequence. The second bracket 7 is provided with at least two filter mounting positions arranged in parallel. In the present embodiment, the second bracket 7 is provided with three filter mounting positions, one of which is provided with a second day-blind filter 71, which is a day-blind filter that passes a wavelength of 200-260nm, and at least one of the other two filter mounting positions is provided with a fusion filter 72, and the other is a spare filter mounting position 73, and the corresponding filter is installed as needed, and the spare filter mounting position 73 may also be not provided with a filter, forming an empty frame. For example, when performing sewage detection, a 275nm day-blind filter is required to detect one component, and another sewage component needs to be switched to a 200-260nm day-blind filter for detection.

[0030] The lens holder 1 is provided with a first slide groove 11 and a second slide groove 12, the first bracket 6 is slidably connected to the first slide groove 11, and the second bracket 7 is slidably connected to the second slide groove 12. When the bracket slides along the slide groove, in order to ensure that the corresponding optical components are located on the same straight line after movement, a sliding positioning structure is provided between the first bracket 6 and the first slide groove 11, and between the second bracket 7 and the second slide groove 12.

[0031] The sliding positioning structure includes a block 81 and a positioning groove 82 that are engaged with each other. One of the block 81 and the positioning groove 82 is arranged on the inner side wall of the first slide groove 11 and the second slide groove 12, and the other is arranged on the first bracket 6 and the second bracket 7. In this embodiment, the block 81 is arranged on the inner side wall of the first slide groove 11 and the second slide groove 12, and the positioning groove 82 is arranged on the outer side wall of the first bracket 6 and the second bracket 7. Taking the second bracket 7 as an example, after a person manually pushes the second bracket 7 to slide a certain distance along the second slide groove 12, the block 81 engages with the corresponding positioning groove 82.

[0032] When observing at night, all filters are removed through the first bracket 6 and the second bracket 7, and the ultraviolet light of the corona discharge passes through the ultraviolet image intensifier 3. The image is magnified by the magnifying glass 4 and projected on the front of the screen 5. The observer sees the magnified image of the ultraviolet light of the corona discharge on the back of the screen 5.

[0033] Since the ultraviolet light of corona discharge is weak light, in daytime or in a bright light environment, by operating the first bracket 6, the first day-blind filter 61 can filter out the strong light, ensuring that the ultraviolet light image of corona discharge projected on the screen 5 can be clearly seen by the observer.

[0034] In order to distinguish the specific location of the corona discharge, the first bracket 6 can be switched to the low-transmittance filter 62, and the light of the object in the observed environment passes through the low-transmittance filter 62 and the ultraviolet image intensifier 3 in turn, and forms a black and white image of the object on the screen 5. The personnel can determine the specific location of the corona discharge by comparing the images.

[0035] In addition to the above embodiments, at least one of the filter mounting positions of the second bracket 7 is provided with a fusion filter, which is a filter in which a day-blind filter and a low-transmittance filter are fused together. One filter mounting position on the second bracket 7 is not installed with any filter and serves as an empty frame. In this way, the fusion filter can be used to directly perform fusion imaging, which includes both corona discharge images and environmental object images.

[0036] In addition to the above embodiments, the switching structure may also use two brackets arranged front and back and independent of each other, one bracket is equipped with a solar blind filter 61, and the other bracket is equipped with a low-transmittance filter 62, and the two brackets and the ultraviolet image intensifier 3 are arranged in a straight line, for example, the low-transmittance filter 62 is replaced by being installed on the second bracket 7, and the solar blind filter 61 is still installed on the first bracket 6. By operating different brackets, one of the low-transmittance filter 62 and the solar blind filter 61 can be selected to be located directly in front of the ultraviolet image intensifier 3, so as to obtain a corresponding image on the screen 5.

[0037] Example 2

[0038] like Figure 3 As shown, the difference from Example 1 is that a driving mechanism is connected between the first bracket 6 and the lens mount 1, and between the second bracket 7 and the lens mount 1. The driving mechanism includes a meshing rack 91 and a gear 92, the rack 91 is arranged on the first bracket 6 and the second bracket 7, and the gear 92 is rotatably connected to the lens mount 1 and linked to the motor.

[0039] Each driving mechanism drives the corresponding bracket to move along the slide groove. Taking the first bracket 6 as an example, the motor drives the gear 91 to rotate, and the first bracket 6 can be driven to slide along the first slide groove 11.

[0040] In addition, the driving mechanism may also adopt structures such as a linear motor or a hydraulic cylinder.

[0041] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A corona discharge observation instrument, characterized in that: The invention comprises a handle (10), the top of which is connected to a lens seat (1), and the lens seat (1) is provided with an ultraviolet image intensifier (3), a magnifying glass (4) and a screen (5) which are arranged in sequence along a straight line.

2. A corona discharge observation instrument according to claim 1, characterized in that: An ultraviolet lens (2) is provided on the lens seat (1), and the ultraviolet lens (2), an ultraviolet image intensifier (3) and a magnifying glass (4) are arranged in sequence.

3. A corona discharge observation instrument according to claim 1 or 2, characterized in that: The lens holder (1) is provided with a switching structure that enables the solar blind filter (61) and the low-transmittance filter (62) to cooperate with the ultraviolet image intensifier (3) respectively.

4. A corona discharge observation instrument according to claim 3, characterized in that: The switching structure comprises a first bracket (6) movably connected to the lens holder (1), and the first bracket (6) is provided with a first day-blind filter (61), a low-transmittance filter (62) and a hollow frame (63) arranged in parallel.

5. A corona discharge observation instrument according to claim 4, characterized in that: The lens holder (1) is also movably connected to a second bracket (7), and the second bracket (7), the first bracket (6) and the ultraviolet image intensifier (3) are arranged in sequence; the second bracket (7) is provided with at least two filter installation positions arranged in parallel.

6. A corona discharge observation instrument according to claim 5, characterized in that: At least one of the filter installation positions is provided with a fusion filter (72).

7. A corona discharge observation instrument according to claim 5, characterized in that: The lens mount (1) is provided with a first slide groove (11) and a second slide groove (12); the first bracket (6) is slidably connected to the first slide groove (11); the second bracket (7) is slidably connected to the second slide groove (12); and a sliding positioning structure is provided between the first bracket (6) and the first slide groove (11) and between the second bracket (7) and the second slide groove (12).

8. A corona discharge observation instrument according to claim 7, characterized in that: The sliding positioning structure comprises a clamping block (81) and a positioning groove (82) which are engaged with each other, one of the clamping block (81) and the positioning groove (82) being arranged on the inner side wall of the first sliding groove (11) and the second sliding groove (12), and the other being arranged on the first bracket (6) and the second bracket (7).

9. A corona discharge observation instrument according to claim 5, characterized in that: A driving mechanism is connected between the first bracket (6) and the lens mount (1), and between the second bracket (7) and the lens mount (1).

10. A corona discharge observation instrument according to claim 9, characterized in that: The driving mechanism comprises a meshing rack (91) and a gear (92); the rack (91) is arranged on the first bracket (6) and the second bracket (7); the gear (92) is rotatably connected to the lens holder (1) and linked to the motor.

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