CN204389770U - A kind of spherical arclight sensor lens - Google Patents

Abstract

A spherical arc light sensor lens, comprising a filter component, an optical fiber and a base, the filter component is composed of one end of a tubular part connected to the bottom of a circular frustum, the diameter of the bottom of the circular frustum is larger than the outer diameter of the tubular part, and the other end of the tubular part is fixed on On the base; the fiber core of the optical fiber passes through the base and the tubular part and leans against the bottom of the circular truncated part; it also includes a lens, the lens is formed by connecting the plane of the spherical part to one end of the cylindrical part, and the inside of the lens is also provided with The cavity is provided with an opening at the other end of the cylinder, the lens is covered on the filter part, and the opening end of the cylinder is closed and connected with the base. The spherical arc light sensor lens provided by the utility model can increase the detection angle to 275°-300°, has a focusing function to improve the sensitivity of arc light detection, and can detect arc light signals of multiple detection points at the same time, thus greatly reducing the installation cost. difficulty and greatly reduce maintenance costs.

Description

A spherical arc light sensor lens

technical field

The utility model relates to the technical field of arc light detection, in particular to a spherical arc light sensor lens.

Background technique

Once a fault occurs in the power system, a huge arc light will be generated. When the arc light occurs, a large amount of light energy radiation and high temperature radiation will be generated. These radiations have a great destructive effect on the power system and sometimes cause operation casualties of personnel. The degree of harm of arc light depends on the duration of arc light, so as long as the system power supply can be quickly limited or cut off, the damage caused by arc light can be effectively reduced. The arc light sensor can detect the intensity of the arc light, and then judge whether to cut off the system power according to the intensity of the arc light. At present, the arc light sensor on the market can only monitor the light signal transmitted from the fan-shaped surface about 135° in front of it. When installing, the front of the arc light sensor lens must face the detection point to be detected. When there are multiple detection points, It is necessary to install multiple arc light sensors. If the installation is improper, it is easy to cause the arc light emitted by the detection point to be unable to be received, thereby failing to protect the arc light.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a spherical arc light sensor lens with a larger detection angle and a focusing function. The technical solution is as follows:

A spherical arc light sensor lens, comprising a filter component, an optical fiber and a base, the filter component is composed of one end of a tubular part connected to the bottom of a circular frustum, the diameter of the bottom of the circular frustum is larger than the outer diameter of the tubular part, and the other end of the tubular part is fixed on On the base; the fiber core of the optical fiber passes through the base and the tubular part and leans against the bottom of the circular truncated part; it also includes a lens, the lens is formed by connecting the plane of the spherical part to one end of the cylindrical part, and the inside of the lens is also provided with The cavity is provided with an opening at the other end of the cylinder, the lens is covered on the filter part, and the opening end of the cylinder is closed and connected with the base.

Further, the outer diameter of the tubular part is 3.8mm, the inner diameter is 2.5mm, and the length is 8.2mm; the bottom diameter of the frustum is 5.9mm, the top diameter is 5.5mm, and the height is 1.6mm; the spherical segment of the lens The diameter of the ball of the part is 20mm, and the height is 17.14mm, and the diameter of the bottom surface of the cylindrical part is 14mm, and the height is 16mm.

Furthermore, the cavity in the lens is a cylinder with a curved top.

Furthermore, the diameter of the bottom surface of the cavity cylinder in the lens is 6.5mm, and the height is 11.5mm.

Furthermore, a connecting part is further included, the connecting part is fixedly sleeved on the optical fiber, and one end of the connecting part is connected to the base.

The beneficial effects of the utility model are: the spherical arc light sensor lens provided by the utility model can increase the detection angle to 275°-300°, has a focusing function, improves the sensitivity of arc light detection, and can detect multiple detection points at the same time Arc signal, which greatly reduces the difficulty of installation and greatly reduces maintenance costs.

Description of drawings

Fig. 1 is a schematic structural diagram of a spherical arc light sensor lens.

Fig. 2 is a schematic diagram of the lens structure of the lens of the spherical arc light sensor.

In the figure: 1-tubular part; 2-round truncated part; 3-base; 4-connecting part; 5-optical fiber; 6-lens; 61-spherical part; 62-cylindrical part;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described: a kind of spherical arc light sensor lens, comprises light filtering part, optical fiber 5 and base 3, and described light filtering part is made of the bottom that one end of tubular part 1 connects circular frustum part 2, and circular frustum part 2 The diameter of the bottom is larger than the outer diameter of the tubular part 1, and the other end of the tubular part 1 is fixed on the base 3; the core of the optical fiber 5 passes through the base 3 and the tubular part 1 abuts against the bottom of the frustum 2; it also includes a lens 6. The lens 6 is formed by connecting the plane of the spherical part 61 to one end of the cylindrical part 62. A cavity 63 is also provided inside the lens 6, and an opening is provided at the other end of the cylindrical part 62. The lens 6 is covered by the On the filter component, the open end of the cylinder part 62 is closed and connected with the base 3 . The cavity 63 in the lens 6 is a cylinder with a curved top.

The cylindrical part 62 of the lens 6 and the base 3 can be connected by threads, the opening end of the cylindrical part 62 of the lens 6 is provided with an internal thread, and the periphery of the base 3 is provided with an external thread matched therewith. The lens 6 and the base 3 can also be connected by means of gluing or ferrule. The purpose is to cover the lens 6 fixedly on the filter part, because the spherical lens 6 plays a light-gathering effect, so that the arc light in a larger angle range can be refracted into the optical fiber through the lens 6 through the filter part.

And the arc light sensor lens of such structure can not only make arc light pass through lens 6 and the circular frustum part 2 of optical filter member refract in the optical fiber 5 from the end of optical fiber 5 fiber core, can also make arc light pass through lens 6 and filter light. The tubular part 1 of the component refracts into the optical fiber 5 from the side of the core of the optical fiber 5, and the detection angle can reach 275°-300°.

In addition, it also includes a connecting part 4, the connecting part 4 is mainly used for fixing, and it is fixedly sleeved on the optical fiber 5, and one end is connected to the bottom of the base 3, so that the core of the optical fiber 5 without a sheath at the end passes through The base 3 is fixed in the filter part. The connecting part 4 can be a metal flange, which is connected to the bottom of the base 3 through the external thread on the flange.

In the present embodiment, the dimensions of each part are as follows: the outer diameter of the tubular part 1 is 3.8mm, the inner diameter is 2.5mm, and the length is 8.2mm; the bottom diameter of the circular frustum part 2 is 5.9mm, the top diameter is 5.5mm, and the height is 1.6mm; the ball diameter of the spherical part 61 of the lens 6 is 20mm, the height is 17.14mm, the bottom surface diameter of the cylinder part 62 is 14mm, and the height is 16mm; the cavity 63 cylinder bottom surface diameter in the lens 6 is 6.5mm , with a height of 11.5mm.

When an arc light is generated when an accident occurs, the arc light is concentrated to the filter part through the lens 6, and then the filter part filters out the ultraviolet light or visible light in the arc light according to the detection requirements, and then the detected light is transmitted by the optical fiber 5 The signal is transmitted to the photoelectric converter, and then the control unit where the photoelectric converter is located sends a trip command to the circuit breaker, and the total time is only a few milliseconds.

Claims (5)

1. A spherical arc light sensor lens, characterized in that it includes a filter component, an optical fiber (5) and a base (3), and the filter component is formed by connecting one end of the tubular part (1) to the bottom of the circular frustum part (2) , the bottom diameter of the circular frustum (2) is larger than the outer diameter of the tubular portion (1), and the other end of the tubular portion (1) is fixed on the base (3); the core of the optical fiber (5) passes through the base (3) and the tubular part (1) against the bottom of the frustum part (2); also includes a lens (6), the lens (6) is formed by connecting the plane of the spherical part (61) to one end of the cylindrical part (62), the lens (6) There is also a cavity (63) inside, and an opening is provided at the other end of the cylinder part (62), the lens (6) is covered on the filter part, and one end of the cylinder part (62) opening is The base (3) is closed and connected. 2. A spherical arc light sensor lens according to claim 1, characterized in that, the outer diameter of the tubular portion (1) is 3.8 mm, the inner diameter is 2.5 mm, and the length is 8.2 mm; the frustum (1) 2) The diameter of the bottom is 5.9mm, the diameter of the top is 5.5mm, and the height is 1.6mm; the ball diameter of the spherical part (61) of the lens (6) is 20mm, the height is 17.14mm, and the bottom surface of the cylindrical part (62) The diameter is 14mm and the height is 16mm. 3. A spherical arc light sensor lens according to claim 1, characterized in that, the cavity (63) in the lens (6) is a cylinder with a curved top. 4. A spherical arc light sensor lens according to claim 3, characterized in that, the bottom surface of the cavity (63) in the lens (6) has a diameter of 6.5 mm and a height of 11.5 mm. 5. A spherical arc light sensor lens according to claim 1, characterized in that it further comprises a connection part (4), the connection part (4) is fixedly sleeved on the optical fiber (5), and the connection part (4) One end is connected with the base (3).