CN212567661U

CN212567661U - Sunlight interference test equipment for flame detector based on natural lighting of sunlight tube

Info

Publication number: CN212567661U
Application number: CN202021447935.1U
Authority: CN
Inventors: 钟晨; 刘森; 丁宏军
Original assignee: Shenyang Fire Research Institute of MEM
Current assignee: Shenyang Fire Research Institute of MEM
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-19
Anticipated expiration: 2030-07-21

Abstract

Flame detector sunlight interference test equipment based on natural daylighting of sunshine pipe, gather subassembly and sunlight interference subassembly including sunlight, sunlight interference subassembly includes optics camera bellows, optics slide rail, sliding seat, height-adjustable sample support, flame detector sample and optics camera bellows support, optics camera bellows support top is provided with the optics camera bellows, and optics camera bellows sunlight input port is connected with sunlight collection subassembly, and optics camera bellows bottom plate upper surface has the optics slide rail through bolt fixed mounting, and slidable mounting has the sliding seat on the optics slide rail, and the sliding seat upper surface is provided with height-adjustable sample support, and height-adjustable sample support upper surface is provided with the flame detector sample, installs the illuminometer on the height-adjustable sample support. The utility model discloses test equipment is of value to and solves natural sunlight interference test, and sunlight irradiance constantly changes and is difficult to quantitative test and shine the problem that the direction is difficult to control to the standardization of sunlight interference test method is realized.

Description

Sunlight interference test equipment for flame detector based on natural lighting of sunlight tube

Technical Field

The utility model belongs to the technical field of detector inspection and performance evaluation, in particular to flame detector sunlight interference test equipment based on natural daylighting of sunshine pipe.

Background

The flame detector mainly judges the occurrence of fire by detecting light radiation generated during flame combustion, and can be divided into: infrared type, ultraviolet type, and multi-band type. In recent years, with the wide application of flame detectors in open or semi-open places such as tunnels, petrochemical plants, vehicles and ships, sunlight interference has become one of the main interference sources for false alarm generation of such detectors.

For a flame detector used in an environment where sunlight interference may exist, the monitoring view angle of the detector is generally required to be a horizontal direction or a diagonally downward direction, and a sun shade or the like is provided to prevent direct sunlight. It is also clearly indicated in the national standard GB 50116 and 2013 "design code for automatic fire alarm system", that point-type flame detectors are not suitable for use in locations that are subject to direct or indirect illumination by light sources such as sunlight and incandescent lamps. But some products with better anti-interference performance (such as multi-band products) can still be installed and used in the places with more serious environment light interference and play an important role in fire detection and alarm.

Therefore, the method has important significance for the evaluation of the environmental suitability of the flame detector for the sunlight interference resistance. In the fire-proof design specifications of petrochemical industry and the like, the flame detector is definitely required to have sunlight interference resistance. However, in the current relevant national standards, the ambient light interference test of the flame detector is mainly simulated by an incandescent lamp, a fluorescent lamp and other artificial light sources. Due to the large difference between the spectral characteristics of the artificial light source and sunlight, the above method cannot objectively evaluate the response performance of the product in a real sunlight interference environment. On the other hand, if natural sunlight is adopted for interference tests, the problem that the sunlight irradiance and the irradiation direction are difficult to control quantitatively is faced. Therefore, it is necessary to design a standardized sunlight interference simulation test device to test the sunlight interference resistance of the flame detector product.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the sunlight interference test equipment for the flame detector based on natural lighting of the sunlight tube is provided, and quantitative measurement of the sunlight interference resistance of the flame detector is realized by adjusting the natural lighting and irradiation distance of the sunlight tube.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

flame detector sunlight interference test equipment based on natural daylighting of sunshine pipe, gather subassembly and sunlight interference subassembly including sunlight, sunlight interference subassembly includes optics camera bellows, optics slide rail, sliding seat, height-adjustable sample support, flame detector sample and optics camera bellows support, optics camera bellows support top is provided with the optics camera bellows, and optics camera bellows sunlight input port is connected with sunlight collection subassembly, and optics camera bellows bottom plate upper surface has the optics slide rail through bolt fixed mounting, and slidable mounting has the sliding seat on the optics slide rail, and the sliding seat upper surface is provided with height-adjustable sample support, and height-adjustable sample support upper surface is provided with the flame detector sample, installs the illuminometer on the height-adjustable sample support.

The sunlight collecting assembly comprises a transparent light collecting cover, a light guide cylinder and a light guide cylinder support, one end of the light guide cylinder is connected with the light collecting cover, the other end of the light guide cylinder is connected with a sunlight input port of the optical dark box, and the light guide cylinder is installed at the top of the light guide cylinder support.

And universal wheels are arranged at four corners of the light guide cylinder support and the optical camera bellows support.

The utility model has the advantages that:

the utility model discloses a flame detector product sunlight interference test provides test equipment, is of value to solving natural sunlight interference test, and sunlight irradiance constantly changes the problem that is difficult to quantitative test and shines the orientation and is difficult to control to the realization is to the standardization of sunlight interference test method.

Drawings

FIG. 1 is a schematic structural view of a sunlight interference test device of a flame detector based on natural lighting of a sunlight tube;

1. a transparent lighting shade; 2. a light guide tube; 3. a light guide tube holder; 4. an optical dark box; 5. an optical sled; 6. a sliding seat; 7. a height adjustable sample support; 8. a flame detector sample; 9. an optical camera support.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in figure 1, the flame detector sunlight interference test equipment based on natural lighting of the sunlight pipe comprises a sunlight collecting component and a sunlight interference component, the sunlight interference component comprises an optical camera bellows 4, an optical slide rail 5, a slide seat 6, a height-adjustable sample support 7, a flame detector sample 8 and an optical camera bellows support 9, the utility model discloses a high-efficient optical camera bellows, including optics

camera bellows support

9, 4 daylight input ports of optics camera bellows are connected with the sunlight collection subassembly, 4 bottom plates upper surfaces of optics camera bellows have optics slide rail 5 through bolt fixed mounting, slidable mounting has sliding seat 6 on the optics slide rail 5, 6 upper surfaces of sliding seat are provided with height-adjustable sample support 7, height-adjustable sample support 7 upper surface is provided with flame detector sample 8, install the illuminometer on the height-adjustable sample support 7, the sensitive component setting on illuminometer and the flame detector is in same vertical plane.

The sunlight collecting assembly comprises a transparent light collecting cover 1, a light guide cylinder and a light guide cylinder support 3, one end of the light guide cylinder is connected with the light collecting cover, the other end of the light guide cylinder is connected with a sunlight input port of an optical dark box 4, the light guide cylinder is installed at the top of the light guide cylinder support 3, the light guide cylinder is L-shaped, the cross section of the light guide cylinder is a circular light guide cylinder 2, and a reflecting layer is adhered to the inner wall of the light guide cylinder 2 and used for enhancing the light reflection effect.

The four corners of the light guide cylinder support 3 and the optical camera bellows support 9 are provided with universal wheels.

The use method of the flame detector sunlight interference test equipment based on natural sunlight collection of the sunlight pipe comprises the following steps:

step 1, in an outdoor sunlight-sufficient environment, sunlight is introduced into a light guide cylinder 2 by sunlight interference test equipment through a transparent light-collecting cover 1, and the sunlight irradiation direction is adjusted to be the horizontal direction by utilizing multiple reflections of a reflecting layer arranged on the inner wall of the light guide cylinder 2; in order to ensure the lighting effect, the lighting cover can be ensured to be positioned at a position with abundant sunlight incidence by moving the light guide cylinder bracket 3;

step 2, butting a sunlight output port of the light guide cylinder 2 with a sunlight input port of the optical dark box 4, and enabling sunlight to be emitted into the optical dark box 4 along the optical axis direction through multiple reflections of a reflecting surface on the inner wall of the light guide cylinder 2;

step 3, mounting the flame detector sample 8 on a height-adjustable sample support 7, and enabling a sensitive element of the flame detector sample 8 to be always kept on an optical axis by adjusting the height of the height-adjustable sample support 7;

step 4, adjusting the distance between the sensitive element and the incident sunlight source by sliding the sliding seat 6 on the optical slide rail 5, and ensuring that the sensitive element is under the sunlight illumination condition specified in the test according to the indication value change of the illuminometer at the same distance; observing the working condition of the flame detector sample 8 under the sunlight interference condition, and if the flame detector generates a false alarm signal or a fault signal under the specified sunlight interference severe level, judging that the detection result is not met; if the flame detector does not generate false alarm signals or fault signals under the specified severe sunlight interference level, the detection result is judged to be in accordance with the false alarm signals or fault signals; and recording the detection results of the flame detectors which are in accordance with or not in accordance with the flame detectors, returning the flame detectors which are not in accordance with the flame detectors to a detection unit for finishing, returning the flame detectors after finishing for re-detection until the detection results are in accordance with the flame detectors.

Claims

1. The utility model provides a flame detector sunlight interference test equipment based on natural daylighting of sunshine pipe, its characterized in that, gathers subassembly and sunlight interference subassembly including sunlight, sunlight interference subassembly includes optics camera bellows, optics slide rail, sliding seat, height-adjustable's sample support, flame detector sample and optics camera bellows support, optics camera bellows support top is provided with the optics camera bellows, and optics camera bellows sunlight input port is connected with the sunlight collection subassembly, and optics camera bellows bottom plate upper surface has the optics slide rail through bolt fixed mounting, and slidable mounting has the sliding seat on the optics slide rail, and the sliding seat upper surface is provided with height-adjustable's sample support, and height-adjustable's sample support upper surface is provided with the flame detector sample, installs the illuminometer on the height-adjustable sample support.

2. The sunlight tube natural lighting based flame detector sunlight interference test apparatus of claim 1 wherein: the sunlight collecting assembly comprises a transparent light collecting cover, a light guide cylinder and a light guide cylinder support, one end of the light guide cylinder is connected with the light collecting cover, the other end of the light guide cylinder is connected with a sunlight input port of the optical dark box, and the light guide cylinder is installed at the top of the light guide cylinder support.

3. The sunlight tube natural lighting based flame detector sunlight interference test apparatus of claim 2 wherein: and universal wheels are arranged at four corners of the light guide cylinder support and the optical camera bellows support.