CN207503406U

CN207503406U - fire smoke detecting structure

Info

Publication number: CN207503406U
Application number: CN201721472520.8U
Authority: CN
Inventors: 易鹏
Original assignee: SHANGHAI LIANGCHUANG ARCHITECTURAL DESIGN CO Ltd
Current assignee: Shanghai Lianchang Design Group Co., Ltd.
Priority date: 2017-11-07
Filing date: 2017-11-07
Publication date: 2018-06-15
Anticipated expiration: 2027-11-07

Abstract

The utility model provides a kind of fire smoke detecting structure, including：A layer line type light beam smoke detector is each provided at 6~7m, 11~12m and 21~22m in space, the ceiling height of the space is more than 26m and less than 30m, a layer line type light beam smoke detector is provided at 0.1~1m under the furred ceiling, all line style light beam smoke detectors are communicated to connect with fire alarm system.

Description

Fire smoke detecting structure

Technical field

The utility model is related to fire alarm equipment fields, and in particular, to a kind of fire cigarette suitable for large space Gas detecting structure.

Background technology

The increasingly diversification of modern society's building type, heavy construction clear height in part is more than 26 meters, and common point-type cigarette sense Space below 12 meters of clear height can only be protected.For common Space, Place, when a fire, the hot cigarette that fire generates Gas can quickly rise to ceiling, and trigger the point-type sense cigarette or heat detector mounted on ceiling, and detector can be when very short It is interior to send out alarm signal.But site conditions can be very different during for large space (clear height being more than 12 meters), main table Present following two aspects:

1st, in large space place, when fire is happened at bottom, the flue gas that fire generates needs to pass through longer distance Get to roof.During fire smoke rises, it can roll up and inhale a large amount of air, therefore flue gas concentration can substantially reduce, And the temperature of flue gas is greatly reduced, it is therefore desirable to which the point-type sense smoking set of large space has higher sensitivity, and should not use sense Warm detector.

2nd, in hot summer or sun-drenched weather, the upper space temperature in large space place can be higher. Public building is beautiful and energy saving in order to accomplish, devises a large amount of roof lights, upper part space temperature is sometimes up to 60 DEG C More than.In this way, the flue gas that Initial Stage of Fire generates will be rested under hot air layer, ceiling is not achieved, also can not just trigger peace Fill the detector near ceiling.Only when fire power is sufficiently large or during time long enough, fire smoke can just overcome hot sky The obstruction of gas-bearing formation rises to roof.Therefore, large space detection design be considered as fire smoke stratification phenomena (also known as thermal boundary show As) influence.

Utility model content

For the defects in the prior art, the purpose of this utility model is to provide a kind of fire smoke detecting structure.

According to a kind of fire smoke detecting structure provided by the utility model, including：6~7m in space, 11 A layer line type light beam smoke detector is each provided at~12m and 21~22m, the ceiling height of the space is more than 26m and less than 30m, is provided with a layer line type light beam smoke detector, all line style light beam senses under the furred ceiling at 0.1~1m Smoke detector is communicated to connect with fire alarm system.

Preferably, the furred ceiling is non-close furred ceiling.

Preferably, the space further includes ceiling, clear height of the ceiling apart from the furred ceiling is more than 4m, and top is engraved When the ratio of empty area and the gross area is more than 30%, a layer line type light beam sense cigarette is provided at 0.1~0.3m under the ceiling Detector.

Preferably, include the combination of at least one transmitting terminal and a receiving terminal per layer line type light beam smoke detector.

Preferably, it is additionally provided with image-type fire detector in the space.

Compared with prior art, the utility model has following advantageous effect：

The line style light beam smoke detector being laid out by multilayer science, can accomplish the fire hazard in whole building space Comprehensive detection, it is ensured that protected without dead angle in whole building space.

Description of the drawings

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon：

Fig. 1 is the structure diagram of the utility model.

Specific embodiment

The utility model is described in detail with reference to specific embodiment.Following embodiment will be helpful to this field Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made. These belong to the scope of protection of the utility model.

As shown in Figure 1, a kind of fire smoke detecting structure provided by the utility model, including：In space 6~ A layer line type light beam smoke detector 1 is each provided at 7m, 11~12m and 21~22m, the ceiling height of space is more than 26m and less than 30m, is provided with a layer line type light beam smoke detector 1, all line style light beam sense cigarettes under furred ceiling at 0.1~1m Detector 1 is communicated to connect with fire alarm system.

In furred ceiling in the case of non-close furred ceiling, clear height of the ceiling apart from furred ceiling is more than 4m, and push up fretwork area with it is total When the ratio of area is more than 30%, a layer line type light beam smoke detector 1 is provided at 0.1~0.3m under ceiling.

Include the combination of at least one transmitting terminal 101 and a receiving terminal 102 per layer line type light beam smoke detector.

Preferably, in order to further increase the sensitivity of detection, image-type fire is also provided in space Detector, it is better with reference to line style light beam smoke detector.

In the description of the present application, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular Directly ", the orientation of the instructions such as " level ", " top ", " bottom ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position Relationship is put, be for only for ease of description the application and simplifies description rather than instruction or implies that signified device or element are necessary With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the application.

Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment Sign can be arbitrarily combined with each other.

Claims

1. a kind of fire smoke detecting structure, which is characterized in that including：6~7m, 11~12m and 21 in space A layer line type light beam smoke detector is each provided at~22m, the ceiling height of the space is more than 26m and is less than 30m, A layer line type light beam smoke detector, all line style light beam smoke detectors and fire are provided at 0.1~1m under the furred ceiling Calamity alarm system communicates to connect.

2. fire smoke detecting structure according to claim 1, which is characterized in that the furred ceiling is non-close furred ceiling.

3. fire smoke detecting structure according to claim 2, which is characterized in that the space further includes ceiling, Clear height of the ceiling apart from the furred ceiling is more than 4m, and when the ratio for pushing up fretwork area and the gross area is more than 30%, described A layer line type light beam smoke detector is provided under ceiling at 0.1~0.3m.

4. fire smoke detecting structure according to claim 1, which is characterized in that per layer line type light beam smoke detector packet Include the combination of at least one transmitting terminal and a receiving terminal.

5. fire smoke detecting structure according to claim 1, which is characterized in that be additionally provided in the space Image-type fire detector.