CN212482707U - Flame early warning monitoring device - Google Patents

Abstract

The utility model provides a flame early warning monitoring devices, including a main equipment section of thick bamboo, the front end of a main equipment section of thick bamboo is provided with the front end housing, and the rear end is provided with the rear end cap, set up the window that has the light signal to pass on the front end housing, be provided with an antenna in the main equipment section of thick bamboo, the opening of antenna is aimed at the window, the feed setting of antenna is in on the inside circuit board of a main equipment section of thick bamboo, be provided with the socket on the rear end cap, the socket is connected the circuit board. The utility model has the advantages of simple integral structure, low in manufacturing cost, convenient to use and maintenance through set up the horn antenna before the window, have effectively promoted flame monitoring distance, monitoring angle scope etc. and response time is shorter simultaneously, no matter monitoring distance or sensitivity all far above I level standard of country and prior art, have actual meaning and spreading value.

Description

Flame early warning monitoring device

Technical Field

The utility model relates to a flame early warning technical field, in particular to flame early warning monitoring devices.

Background

During the combustion of the substance, visible or non-visible light radiation is generated while smoke and heat are generated. The flame early warning and monitoring device mainly responds to the optical characteristics of a fire, namely, the flame combustion light radiation early warning and monitoring device. In the prior art, a flame early warning and monitoring device mainly comprises one or more optical sensors which are arranged in an outer cylinder and can react to flame, light radiation (infrared rays or ultraviolet rays, also can be regarded as electromagnetic waves) generated by the flame is received by the optical sensors after passing through plane optical glass and is converted into an electric signal, and the existence condition of the flame is judged through a system.

The monitoring distance of the existing flame early warning monitoring device is shorter, the monitoring distance is generally smaller than 50m, if the monitoring distance of the device with the I-level sensitivity in the national standard is 25m, a fire alarm signal is sent within 30 s. When the flame detector is used, the flame detector is limited by the size of a detection area, and a plurality of flame detectors need to be arranged, so that the fire hazard caused by dead angles is avoided. Meanwhile, the sensitivity of detecting flame optical signals is low, the response time is long, the fire condition cannot be forecasted in time, and the potential safety hazard in the area is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's not enough, provide a flame early warning monitoring devices suitable for small-size region, have bigger detection distance and higher sensitivity, have obvious advantage for current flame early warning monitoring devices.

In order to achieve the aim, the utility model provides a flame early warning monitoring devices, including a main equipment section of thick bamboo, the front end of a main equipment section of thick bamboo is provided with the front end housing, and the rear end is provided with the rear end housing, set up the window that has the light signal to pass on the front end housing, be provided with an antenna in the main equipment section of thick bamboo, the opening of antenna is aimed at the window, the feed setting of antenna is in on the inside circuit board of a main equipment section of thick bamboo, be provided with the socket on the rear end housing, the socket is connected the circuit board.

Further, the front end and the rear end of a main equipment section of thick bamboo all are provided with the external screw thread, the front end housing with the inside wall of rear end cap all is provided with the internal thread, the front end housing with the rear end housing all with a main equipment section of thick bamboo threaded connection.

Further, the outer surfaces of the front end cover and the rear end cover are both formed with straight patterns in a rough rolling mode.

Furthermore, a support frame is further arranged on the main equipment cylinder, a through hole is formed in the bottom end of the support frame, the main equipment cylinder is inserted into the through hole, and a plurality of mounting screw holes are formed in two sides of the top end of the support frame.

Further, the surface shaping of a main equipment section of thick bamboo has convex installation latch, the external diameter of latch is greater than the aperture of through-hole, the support frame cover is established between two adjacent installation latches.

Furthermore, the antenna is a horn antenna, and a mirror coating reflecting a specific spectrum wave band is arranged on the inner side wall of the horn antenna.

Further, the incidence angle of the horn antenna is 45-65 °.

Further, the specific spectral band is an ultraviolet spectral band.

Further, the window is made of optical glass.

Further, the feed source is a plurality of optical sensors which are orderly arranged on the circuit board.

The above technical scheme of the utility model has following beneficial effect:

the utility model has the advantages of simple integral structure, low manufacturing cost, convenient assembly and disassembly of the support frame, the front end cover, the rear end cover and the like, and convenient use and maintenance; through set up horn antenna before the window, effectively promoted flame monitoring distance, monitoring angle scope etc. response time is shorter simultaneously, no matter be monitoring distance or sensitivity all far above I level standard of country and prior art, have actual meaning and spreading value.

Drawings

Fig. 1 is a schematic overall structure diagram (partially cut away) of the present invention;

fig. 2 is a side view of the supporting frame structure of the present invention.

[ description of reference ]

1-a main equipment cartridge; 2-front end cover; 3-rear end cap; 4-a window; 5-an antenna; 6-a socket; 7-straight pattern; 8-a support frame; 9-a through hole; 10-mounting screw holes; 11-mounting the latch.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the embodiment of the utility model provides a flame early warning monitoring devices, including a main equipment section of thick bamboo 1, the front end of a main equipment section of thick bamboo 1 sets up front end housing 2, and the rear end sets up rear end housing 3, forms the device of sealed cavity in order to protect internally mounted. The front end cover 2 is provided with a window 4 through which an optical signal passes, an antenna 5 is arranged in the main equipment barrel 1, an opening of the antenna is aligned with the window 4, the optical signal passing through the window 4 is received, and the antenna has the function of improving signal gain so as to improve the detection distance and sensitivity of the device. The feed source of the antenna 5 is arranged on the circuit board in the main equipment barrel 1 and is positioned at the terminal position of the antenna 5. The rear end cover 3 is provided with a socket 6 for connecting a circuit board, and the device is electrically connected with an external system through the socket 6. Socket 6 is seven hole aviation sockets in this embodiment, and waterproof and dirt-proof effectual is applicable equally in the comparatively complicated region of environment.

In a preferred embodiment, the front end and the rear end of the main equipment cylinder 1 are provided with external threads, the inner side walls of the front end cover 2 and the rear end cover 3 are provided with internal threads, and the front end cover 2 and the rear end cover 3 are respectively screwed on the front end and the rear end of the main equipment cylinder 1. The threaded connection mode which is convenient to disassemble is adopted, so that the parts in the device can be conveniently disassembled and maintained.

In addition, the outer surfaces of the front end cover 2 and the rear end cover 3 are both formed with straight patterns 7 in a rough rolling mode, so that the anti-skidding effect is achieved when the end covers are detached, and the attractiveness of the device can be improved.

The main equipment barrel 1 is further provided with a support frame 8 which is mainly used for fixing the whole device, and reference can be made to fig. 2. The bottom of support frame 8 is provided with through-hole 9, and main equipment section of thick bamboo 1 is inserted and is established in through-hole 9. Both sides of the top end of the support frame 8 are provided with a plurality of mounting screw holes 10, and the support frame 8 is stably connected with a mounting support and the like through mounting bolts. Wherein, the outer surface of the main equipment cylinder 1 is formed with convex mounting latch 11, the outer diameter of which is slightly larger than the aperture of the through hole 9, and the support frame 8 is sleeved between two adjacent mounting latch 11. The part of the supporting frame 8 close to the through hole 9 can be arranged to be a clamping structure or an elastic structure, so that the supporting frame is convenient to mount and sleeved among different mounting clamping teeth 11, and the front position and the rear position of the main equipment barrel 1 can be adjusted.

In a preferred embodiment, the antenna 5 used in the device of the present embodiment is a horn antenna. The horn antenna is a microwave antenna with a circular or rectangular section, a waveguide tube terminal of which is gradually opened, is the most widely used microwave antenna, can effectively improve signal gain by adopting the horn antenna according to the Maxwell classical electromagnetic wave theory, and has the advantages of simple structure, wide frequency band, large power capacity, convenience in adjustment and use and the like.

On the basis of the theory, the device collects wide-range signals of flame light in the area through the horn antenna, the signals are converted into electric signals after being received by the feed source and transmitted to the system, and the fire condition is judged by the system. Wherein, be provided with the mirror surface coating of the specific spectrum wave band of reflection on the inside wall of horn antenna, be ultraviolet spectrum wave band in this embodiment, consequently the invisible ultraviolet light wave that this device mainly monitored flame production for the device of monitoring infrared ray light wave, the utility model discloses a monitoring distance is longer, and is difficult to produce the wrong report.

In a preferred embodiment, the angle of incidence of the horn antenna is 45 ° to 65 °, and in the present embodiment, a preferred embodiment of the angle of incidence of the horn antenna is 55 °. The radiation field of the horn antenna can be calculated by the mouth surface field by using the huygens principle, and the mouth surface field is determined by the mouth surface size and the propagation mode of the horn. Its radiation characteristics are thus determined by the size and field distribution of the mouth-piece, while the impedance is determined by the neck (beginning discontinuity) of the horn and the reflection of the mouth-piece. When the horn length is fixed, if the horn opening angle is gradually increased, the mouth face size and the quadratic phase difference are also increased, but the signal gain is not increased synchronously with the mouth face size, and the mouth face size with the maximum gain is provided, and the horn with the size is the optimal horn. Therefore, when the length of the arranged horn antenna is fixed, the horn antenna with the incidence angle of 55 degrees is optimal, the gain to the signal is maximum, the signal in the range of 45 degrees to 65 degrees is obviously increased through tests, and the horn antenna can be arranged according to the actual space condition and the like.

Through the actual test, the utility model discloses at least, can detect the flame about the distance 120m, reaction time is below 5s simultaneously, no matter is detection distance or sensitivity all far above I level standard of country and current flame detector, therefore has practical meaning and spreading value.

In the embodiment, the window is made of optical glass, and optical glass with good transmittance to ultraviolet rays can be adopted to improve the signal-to-noise ratio.

In this embodiment, the feed forms the sensitization matrix for a plurality of light sensor of range in order on the circuit board, can set up according to actual need, promotes the sensitization effect.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The flame early warning and monitoring device comprises a main equipment cylinder and is characterized in that a front end cover is arranged at the front end of the main equipment cylinder, a rear end cover is arranged at the rear end of the main equipment cylinder, a window through which an optical signal passes is formed in the front end cover, an antenna is arranged in the main equipment cylinder, an opening of the antenna is aligned to the window, a feed source of the antenna is arranged on a circuit board in the main equipment cylinder, a socket is arranged on the rear end cover, and the socket is connected with the circuit board.

2. The flame early warning and monitoring device according to claim 1, wherein the front end and the rear end of the main equipment cylinder are both provided with external threads, the inner side walls of the front end cover and the rear end cover are both provided with internal threads, and the front end cover and the rear end cover are both in threaded connection with the main equipment cylinder.

3. The flame early warning and monitoring device according to claim 2, wherein the outer surfaces of the front end cover and the rear end cover are both formed with straight patterns in a rough rolling manner.

4. The flame early warning and monitoring device according to claim 1, wherein a support frame is further arranged on the main equipment cylinder, a through hole is formed in the bottom end of the support frame, the main equipment cylinder is inserted into the through hole, and a plurality of mounting screw holes are formed in two sides of the top end of the support frame.

5. The flame early warning and monitoring device according to claim 4, wherein a protruding mounting latch is formed on the outer surface of the main equipment cylinder, the outer diameter of the latch is larger than the aperture of the through hole, and the support frame is sleeved between two adjacent mounting latches.

6. The flame early warning and monitoring device according to claim 1, wherein the antenna is a horn antenna, and a mirror coating reflecting a specific spectral band is arranged on the inner side wall of the horn antenna.

7. The flame early warning and monitoring device according to claim 6, wherein the horn antenna has an incident angle of 45 ° -65 °.

8. The flame pre-warning and monitoring device according to claim 6, wherein the specific spectral band is an ultraviolet spectral band.

9. The flame pre-warning and monitoring device of claim 1, wherein the window is made of optical glass.

10. The flame early warning and monitoring device as claimed in claim 1, wherein the feed source is a plurality of optical sensors arranged on the circuit board in order.

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