Outdoor slow change electric field monitoring device

Abstract

The utility model discloses an outdoor slow change electric field monitoring device, which comprises a shell, a probe device and a partition plate, a cavity matched with the probe device is arranged in the shell, and the probe device comprises an optical fiber, a collimator, an electro-optical crystal sensor and an optical fiber which are sequentially connected in series. A partition plate is further arranged in the shell and divides the cavity into a glue pouring area and an isolation area, the isolation area is located on the inner side of the glue pouring area, and the electro-optical crystal sensor is located in the isolation area. According to the utility model, the electric field intensity can be detected through the electro-optical crystal sensor composed of the shell, the probe device and the partition plate, and the interference of a stray electric field can be reduced through the arrangement of the metal partition plate, so that the detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high voltage application new technical field more particularly relates to a kind of outdoor slowly varying electric field monitoring device. BACKGROUND

[0002] Outdoor slowly varying electric field is mainly composed of power frequency electric field, electric field intensity is low, it changes with time and environmental condition, the requirement of data acquisition, data storage, data processing and data visualization is very high, the monitoring of slowly varying electric field has important significance to understand atmospheric electric process, prevent lightning disaster and the safe operation of relevant electric power facilities.Power department attaches great importance to test result, lightning early warning work is new exploration and verification, improve the accuracy of short-time warning in combination with the application of meteorological data, also improve lightning protection technology and defense capability.According to electrostatic induction principle, induced charge can be generated on the surface of metal conductor in electric field, and electric field intensity can be measured according to periodic current signal sensed by sensing sheet.Conventional abrasive disc type mechanical rotary sensor will generate air flow in the process of rotation, and static electricity will be generated by friction between air and insulator around the sensor, which affects the accuracy of measuring device.Therefore, an outdoor slowly varying electric field monitoring device is needed to improve the measurement accuracy of electric field intensity in atmosphere. SUMMARY

[0003] The technical problem to be solved by the utility model is how to improve slowly varying electric field monitoring precision.

[0004] The utility model solves the above technical problem by the following technical scheme: an outdoor slowly varying electric field monitoring device, including shell, probe device, baffle, the cavity that is adapted to probe device is set in the shell, the probe device includes optical fiber, collimator, electro-optic crystal sensor, optical fiber that are connected in turn, the baffle is also arranged in the shell and makes the cavity divide into glue pouring area and isolation area, the isolation area is located inside glue pouring area, and electro-optic crystal sensor is located in the isolation area.

[0005] As preferred technical scheme, the shell includes upper shell and lower shell, the upper shell and lower shell enclose to form the cavity, and the upper shell top is equipped with plane.

[0006] As preferred technical scheme, the upper shell and lower shell are fastened by screw connection.

[0007] As preferred technical scheme, the lower shell is T-shaped, and includes horizontally section and vertical section that are fixedly connected.

[0008] As preferred technical scheme, the shell is also equipped with optical fiber channel that is communicated with the cavity, the optical fiber channel is equipped with optical fiber channel import and optical fiber channel export, the optical fiber channel import is located at the bottom of lower shell, and the optical fiber channel export is located in the cavity.

[0009] As a preferred technical scheme, the screw comprises a first screw and a second screw, the upper shell and the horizontal section bottom of the lower shell are connected and fastened by a plurality of first screws, and the horizontal section and the vertical section are connected and fastened by a plurality of second screws.

[0010] As a preferred technical scheme, the glue filling area is filled with epoxy resin glue.

[0011] As a preferred technical scheme, one end of the upper shell towards the lower shell is provided with a probe storage card slot, and one end of the lower shell towards the upper shell is provided with a limiting slot, and the probe storage card slot and the limiting slot form the cavity after being enclosed.

[0012] As a preferred technical scheme, the lower shell is provided with a groove, and the groove is provided with a through hole.

[0013] As a preferred technical scheme, the partition plate is of an annular structure.

[0014] The beneficial effects of the present application are as follows:

[0015] (1) In the present application, the electro-optic crystal sensor composed of the shell, the probe device and the partition plate can detect the electric field intensity, and the setting of the metal partition plate can reduce the interference of the stray electric field, thereby improving the detection accuracy.

[0016] (2) In the present application, the KDP type crystal is used for the crystal structure of the electro-optic crystal sensor, which avoids the problems of unreliable start of the fault positioning equipment and difficult setting of the fixed value, and the epoxy resin glue is filled in the glue filling area, which can reduce the noise of the side part and improve the sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The overall structure schematic view provided by the embodiment of the present application is provided;

[0018] Figure 2 The cross-sectional bottom view structure schematic view provided by the embodiment of the present application is provided;

[0019] Figure 3 The cross-sectional top view structure schematic view provided by the embodiment of the present application is provided;

[0020] Fig. 1 is an upper shell; 2 is a lower shell; 3 is an optical fiber channel inlet; 4 is a groove; 5 is a probe storage card slot; 6 is a first screw; 7 is an optical fiber channel outlet; 8 is a second screw; 9 is a limiting slot; 10 is a partition plate; 11 is an optical fiber; 12 is a collimator; 13 is an electro-optic crystal sensor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in conjunction with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Referring to Figure 1 An outdoor slowly-varying electric field monitoring device, comprising an upper shell 1, a lower shell 2 and a probe device, the upper shell 1 and the lower shell 2 are fixedly enclosed and form a cavity capable of accommodating the probe device, the probe device comprises an optical fiber 11, a collimator 12, an electro-optic crystal sensor 13 and the optical fiber 11, wherein the collimator 12 and the electro-optic crystal sensor 13 are commercially available parts, the crystal structure of the electro-optic crystal sensor 13 adopts a KDP type crystal, thereby avoiding problems such as unreliable starting of fault positioning equipment and difficulty in setting a fixed value.

[0023] The upper shell 1 is generally in the shape of a circular truncated cone and is provided with a flat top, which can increase the signal receiving area, so that the signals are uniformly received by the electro-optic crystal sensor 13, thereby avoiding the problem of excessively low signal bandwidth in the prior art, and the lower shell 2 is generally in the shape of a T and comprises a horizontal section and a vertical section, which are integrally formed or fixedly connected, in this embodiment, the upper shell 1 and the lower shell 2 are made of polyimide, which can interfere with the stray electric field, reduce noise and improve sensitivity.

[0024] Referring to Figure 1 , Figure 2 , Figure 3 The upper shell 1 and the lower shell 2 are fixedly connected, in this embodiment, they are connected and fastened by first screws 6 and second screws 8, wherein the upper shell 1 and the horizontal section of the lower shell 2 are connected and fastened by a plurality of first screws 6, in this embodiment, four first screws 6 distributed at equal angles are taken as an example, and the horizontal section is fixedly connected to the vertical section by a plurality of second screws 8, in this embodiment, four second screws 8 are taken as an example, and it should be noted that the second screws 8 are arranged obliquely.

[0025] Referring to Figure 1 The cavity is also fixedly connected with a ring-shaped metal partition plate 10, the height of the partition plate 10 is the same as that of the cavity, the partition plate 10 divides the cavity into a glue filling area and an isolation area, the isolation area is located inside the glue filling area, the partition plate 10 can further reduce the interference of the stray electric field, the glue filling area is filled with epoxy resin glue, which can reduce the noise of the side part and improve the sensitivity, and the partition plate 10 is provided with a through hole through which the optical fiber 11 passes.

[0026] Referring to Figure 1The upper shell 1 is provided with a probe storage card slot 5 at one end facing the lower shell 2, the lower shell 2 is provided with a limiting slot 9 at one end facing the upper shell 1, the probe storage card slot 5 and the limiting slot 9 form the cavity, the horizontal section of the lower shell 2 is located in the upper shell 1, and the plane where the bottom of the upper shell 1 is located is coplanar with the plane where the bottom of the horizontal section is located, the vertical section of the lower shell 2 is provided with a recess 4 at one end away from the horizontal section, the recess 4 is connected with an external device, in the embodiment, the external device is an insulating rod, the recess 4 and the insulating rod are provided with through holes, and the recess 4 and the insulating rod are connected and fastened by penetrating the through holes with bolts.

[0027] Referring to Figure 1 , Figure 2 , Figure 3 Two optical fiber channels are arranged in the lower shell 2, the optical fiber channels are provided with optical fiber channel inlets 3 and optical fiber channel outlets 7, the optical fiber channel inlets 3 are located at the bottom of the vertical section of the lower shell 2, and the optical fiber channel outlets 7 are located at the top of the horizontal section of the lower shell 2 and are communicated with the cavity.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and the modification or replacement does not make the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An outdoor slowly varying electric field monitoring device, characterized by, The application relates to a shell, a probe device and a partition plate, a cavity adapted to the probe device is arranged in the shell, the probe device comprises optical fibers, a collimator, an electro-optic crystal sensor and optical fibers which are sequentially connected in series, the shell is further provided with the partition plate and is divided into a glue pouring area and an isolation area, the isolation area is located in the inside of the glue pouring area, and the electro-optic crystal sensor is located in the isolation area.

2. The outdoor slowly-varying electric field monitoring device according to claim 1, characterized in that, The shell comprises an upper shell and a lower shell, the upper shell and the lower shell enclose the cavity, and the upper shell is provided with a plane on the top.

3. The outdoor slowly-varying electric field monitoring device of claim 2, wherein, The upper shell and the lower shell are fastened by screws.

4. The outdoor slowly-varying electric field monitoring device according to claim 3, characterized in that, The lower shell is T-shaped and comprises a horizontal segment and a vertical segment which are fixedly connected.

5. The outdoor slowly-varying electric field monitoring device of claim 2, wherein, An optical fiber channel is further arranged in the shell and communicates with the cavity, the optical fiber channel is provided with an optical fiber channel inlet and an optical fiber channel outlet, the optical fiber channel inlet is located on the bottom of the lower shell, and the optical fiber channel outlet is located in the cavity.

6. The outdoor slowly-varying electric field monitoring device of claim 4, wherein, The screws comprise first screws and second screws, the upper shell and the horizontal segment of the lower shell are fastened by the first screws, and the horizontal segment and the vertical segment are fastened by the second screws.

7. The outdoor slowly-varying electric field monitoring device of claim 1, wherein, The glue pouring area is filled with epoxy resin glue.

8. The outdoor slowly-varying electric field monitoring device of claim 2, wherein, An end of the upper shell towards the lower shell is provided with a probe storage card slot, an end of the lower shell towards the upper shell is provided with a limiting slot, and the probe storage card slot and the limiting slot enclose the cavity.

9. The outdoor slowly-varying electric field monitoring device of claim 2, wherein, The bottom of the lower shell is provided with a groove, and the groove is provided with a through hole.

10. The outdoor slowly-varying electric field monitoring device of claim 1, wherein, The partition plate is annular.

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