CN216411428U - Optical fiber probe based on double-optical-fiber self-checking ultraviolet arc light technology - Google Patents
Optical fiber probe based on double-optical-fiber self-checking ultraviolet arc light technology Download PDFInfo
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- CN216411428U CN216411428U CN202122593338.0U CN202122593338U CN216411428U CN 216411428 U CN216411428 U CN 216411428U CN 202122593338 U CN202122593338 U CN 202122593338U CN 216411428 U CN216411428 U CN 216411428U
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Abstract
The utility model discloses an optical fiber probe based on a double-optical-fiber self-detection ultraviolet arc light technology, which comprises a measuring head, a fixed tube, an arc light detection optical fiber and a self-detection optical fiber, wherein the measuring head is fixedly connected with the fixed tube, a reflection diaphragm is arranged on the inner wall of the measuring head, one end of the arc light detection optical fiber and one end of the self-detection optical fiber are both fixed in the fixed tube, and a light source emitted by the self-detection optical fiber is emitted by the reflection diaphragm and then emitted by the arc light detection optical fiber. The utility model can simultaneously realize arc light monitoring and optical fiber self-checking of the switch cabinet, and has reasonable structure and good use effect.
Description
The technical field is as follows:
the utility model relates to an optical fiber probe based on a double-optical-fiber self-checking ultraviolet arc light technology.
Background art:
in an electric power system, a switch cabinet is an important electric device in the electric power system as an essential device in the operation of the electric power system. With the development of power grids and the improvement of equipment technology, 10kV and 35kV system switch cabinets are widely used in the power grids. In the long-term operation of the switch cabinet, cable joint faults, contact overhigh temperature faults, bus faults and the like occur in the process of the switch cabinet after installation and commissioning due to various reasons, wherein the harmfulness of electric arcs to equipment and personal safety is the largest, so that the hidden danger is brought to the reliable operation of a power grid, and the safe and stable operation of the equipment is directly influenced. The existing arc light detection probe is mainly based on a single optical fiber sensor, has no optical fiber self-diagnosis function, and cannot diagnose whether an optical fiber is normal or not.
The utility model content is as follows:
the utility model provides a fiber probe based on a double-fiber self-checking ultraviolet arc light technology to solve the problems in the prior art.
The technical scheme adopted by the utility model is as follows:
the utility model provides an optical fiber probe based on two optic fibre self-checking ultraviolet arc light techniques, includes gauge head, fixed pipe, arc light detection optic fibre and self-checking optic fibre, gauge head and fixed pipe fixed connection are equipped with the reflection diaphragm on the inner wall of gauge head, and in the one end of arc light detection optic fibre and the one end of self-checking optic fibre all were fixed in the fixed pipe, the light source that self-checking optic fibre jetted out through arc light detection optic fibre after the reflection diaphragm transmission.
Furthermore, the measuring head comprises a cylindrical pipe part and a hemispherical head part which are integrally formed, fluorescent powder is coated on the inner walls of the cylindrical pipe part and the hemispherical head part to form a fluorescent powder layer, and a reflecting membrane is adhered on the fluorescent powder layer on the inner wall of the hemispherical head part.
Furthermore, a plurality of light guide holes are formed in the outer wall of the cylindrical tube portion.
Further, the fixed pipe comprises a sleeve part, a locking nut and a fixed head, the sleeve part and the fixed head are integrally formed, the diameter of the fixed head is larger than that of the sleeve part, a mounting hole is formed in the fixed head, the arc light detection optical fiber and the self-detection optical fiber are fixed in the mounting hole, a threaded connection part is formed in the outer wall of the sleeve part, and the locking nut is in threaded connection with the threaded connection part.
Furthermore, a rubber gasket is sleeved on the sleeve part and is arranged between the locking nut and the fixing head.
Furthermore, the arc light detection optical fiber and the self-checking optical fiber both adopt double-core optical fibers, the core diameter is 980 micrometers, the outer diameter is 1000 micrometers, and the numerical aperture is 0.5 micrometer.
The utility model has the following beneficial effects:
the utility model can simultaneously realize arc light monitoring and optical fiber self-checking of the switch cabinet, and has reasonable structure and good use effect.
Description of the drawings:
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a sectional view showing the connection between the fixing head and the measuring head according to the present invention.
The specific implementation mode is as follows:
the utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1, the optical fiber probe based on the dual-fiber self-detection ultraviolet arc light technology of the present invention includes a measuring head 1, a fixed tube 2, an arc light detection optical fiber 3 and a self-detection optical fiber 4, wherein the measuring head 1 and the fixed tube 2 are fixedly connected through glue, a reflection diaphragm 10 is disposed on an inner wall of the measuring head 1, one end of the arc light detection optical fiber 3 and one end of the self-detection optical fiber 4 are both fixed in the fixed tube 2, and a light source emitted from the self-detection optical fiber 4 is emitted through the reflection diaphragm 10 and then emitted through the arc light detection optical fiber 3.
When the optical fiber detection device is used, the measuring head 1 in the optical fiber probe is arranged in a switch cabinet, due to the adoption of a double-optical-fiber structure, when the function of the arc light detection optical fiber 3 needs to be diagnosed, the self-detection optical fiber 4 is connected with a light source machine, the arc light detection optical fiber 3 is connected with an optical signal detector, an optical signal emitted by the light source machine irradiates to a reflection diaphragm through the self-detection optical fiber 4, is reflected by the reflection diaphragm to enter the arc light detection optical fiber 3 to be detected by the optical signal detector, and the function of the arc light detection optical fiber 3 is diagnosed through the detection of the optical signal detector.
When arc light is generated in the switch cabinet, an arc light signal passes through the measuring head 1 and enters the arc light detection optical fiber 3 to be detected by the optical signal detector.
Referring to fig. 2, the probe 1 includes a cylindrical tube portion 11 and a hemispherical head portion 12 which are integrally formed. In order to better detect arc signals in the switch cabinet, fluorescent powder is coated on the inner walls of the cylindrical tube part 11 and the hemispherical head part 12 to form a fluorescent powder layer. The purpose of adding the fluorescent powder is that the fluorescent powder can convert an arc signal generated by the electric arc into a corresponding fluorescent signal, so that the intensity of the fluorescent signal received by the optical signal detector is changed, and the optical signal detector can detect the arc in time. The reflecting membrane 10 is adhered on the fluorescent powder layer on the inner wall of the hemispherical head part 12, and the whole reflecting membrane 10 is in an arc shape, so that the light source reflection is facilitated.
A plurality of light guide holes (not shown in fig. 1 and 2) are provided on the outer wall of the cylindrical tube portion 11. The light guiding holes are equally spaced on the sleeve so that the arc light can pass directly through the light guiding holes into the arc detecting fiber 3.
In order to install and fix the optical fiber probe on the switch cabinet, the whole optical fiber probe is installed by arranging the fixing tube.
Fixed pipe 2 includes sleeve part 21, lock nut 22 and fixed head 24, sleeve part 21 and fixed head 24 integrated into one piece, and the diameter of fixed head 24 is greater than the diameter of sleeve part 21, is equipped with two mounting holes on fixed head 24, and arc light detection optical fiber 3 and self-checking optical fiber 4 are fixed in two mounting holes through glue paste.
The cylindrical pipe portion 11 is fixed to the fixing head 24 by bonding with glue, a threaded portion is provided on the outer wall of the sleeve portion 21, and the lock nut 22 is screwed to the threaded portion.
When the probe is installed, the sleeve part 21 penetrates through the installation plate of the switch cabinet, the measuring head 1 is arranged on the inner side of the switch cabinet, the locking nut 22 is arranged on the outer side of the switch cabinet, and the locking nut 22 is screwed to realize the installation of the probe.
For mounting stability, a rubber washer 23 (or washer) is fitted over the sleeve portion 21, and the rubber washer 23 is disposed inside the lock nut 22.
The arc light detection optical fiber 3 and the self-inspection optical fiber 4 both adopt a double-core optical fiber (POF), the core diameter is 980 mu m, the outer diameter is 1000 mu m, and the numerical aperture is 0.5 mu m.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the utility model and these modifications should also be considered as the protection scope of the utility model.
Claims (6)
1. A fiber probe based on a double-fiber self-checking ultraviolet arc light technology is characterized in that: including gauge head (1), fixed pipe (2), arc light detection optical fiber (3) and self-checking optic fibre (4), gauge head (1) and fixed pipe (2) fixed connection are equipped with reflection diaphragm (10) on the inner wall of gauge head (1), and in the one end of arc light detection optical fiber (3) and the one end of self-checking optic fibre (4) all were fixed in fixed pipe (2), the light source that self-checking optic fibre (4) jetted out through light detection arc optic fibre (3) after reflection diaphragm (10) transmission.
2. The optical fiber probe based on the dual-fiber self-inspection ultraviolet arc light technology as claimed in claim 1, wherein: the measuring head (1) comprises a cylindrical pipe part (11) and a hemispherical head part (12) which are integrally formed, fluorescent powder is coated on the inner walls of the cylindrical pipe part (11) and the hemispherical head part (12) to form a fluorescent powder layer, and a reflecting membrane (10) is adhered on the fluorescent powder layer on the inner wall of the hemispherical head part (12).
3. The optical fiber probe based on the dual-fiber self-inspection ultraviolet arc light technology as claimed in claim 2, wherein: the outer wall of the cylindrical pipe part (11) is provided with a plurality of light guide holes.
4. The optical fiber probe based on the dual-fiber self-inspection ultraviolet arc light technology as claimed in claim 1, wherein: the fixed pipe (2) comprises a sleeve part (21), a locking nut (22) and a fixed head (24), the sleeve part (21) and the fixed head (24) are integrally formed, the diameter of the fixed head (24) is larger than that of the sleeve part (21), a mounting hole is formed in the fixed head (24), the arc light detection optical fiber (3) and the self-checking optical fiber (4) are fixed in the mounting hole, a threaded connection part is formed in the outer wall of the sleeve part (21), and the locking nut (22) is in threaded connection with the threaded connection part.
5. The fiber optic probe based on the dual-fiber self-inspection ultraviolet arc technology of claim 4, wherein: the sleeve part (21) is sleeved with a rubber gasket (23), and the rubber gasket (23) is arranged between the locking nut (22) and the fixing head (24).
6. The optical fiber probe based on the dual-fiber self-inspection ultraviolet arc light technology as claimed in claim 1, wherein: the arc light detection optical fiber (3) and the self-checking optical fiber (4) both adopt double-core optical fibers, the core diameter is 980 mu m, the outer diameter is 1000 mu m, and the numerical aperture is 0.5 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122593338.0U CN216411428U (en) | 2021-10-27 | 2021-10-27 | Optical fiber probe based on double-optical-fiber self-checking ultraviolet arc light technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122593338.0U CN216411428U (en) | 2021-10-27 | 2021-10-27 | Optical fiber probe based on double-optical-fiber self-checking ultraviolet arc light technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216411428U true CN216411428U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122593338.0U Active CN216411428U (en) | 2021-10-27 | 2021-10-27 | Optical fiber probe based on double-optical-fiber self-checking ultraviolet arc light technology |
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| Country | Link |
|---|---|
| CN (1) | CN216411428U (en) |
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2021
- 2021-10-27 CN CN202122593338.0U patent/CN216411428U/en active Active
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