An aspirating smoke detection device

Abstract

The invention relates to the technical field of fire equipment and provides an aspirating smoke detection device. A sampling tube is provided with a plurality of sampling holes, an end cap of the sampling tube is provided with a vent hole, the sampling tube is connected to a gas inlet of a partition unit of the smoke detection device, a gas outlet of the partition unit is connected to the gas inlet end of a draught fan, the gas outlet end of the draught fan is connected to a muffler, the muffler is provided with a gas inlet and a gas outlet, the partition unit is further provided with a gas detection return gas inlet connected to a gas outlet of a laser detector, a gas inlet of the laser detector is connected to a gas outlet of a filter, and a gas inlet of the filter is connected to the gas outlet of the muffler. The aspirating smoke detection device has the advantages of small size and low power consumption and noise of the draught fan, the partition arrangement is reliable and can properly work for a long term so as to achieve the application in a polluted area, the external partition unit can significantly reduce the alarm of an area under the protection of the detection device, and sampling hole adhesive films can effectively prolong the service life of the holes and ensure the absolute accuracy and consistency of the holes for preventing the holes from being blocked.

Description

technical field

[0001] The invention relates to the technical field of fire fighting equipment, in particular to an aspirating smoke detection device. Background technique

[0002] In the prior art, commonly used smoke detectors include ordinary probe smoke detectors, infrared radiation smoke detectors and aspirating smoke detectors. In fire-fighting equipment, smoke detection and alarm are the most commonly used Detection means, after the detector alarms, the fire broadcast can be activated to evacuate personnel, the shutter door of the fire zone can be lowered to prevent the fire from spreading, and the fire pump can be started, etc. Effective and accurate detection is a very important part of the school's link.

[0003] The existing point-type smoke detectors are the most widely used and the largest in number, and their sensitivity is low, generally greater than 2 obs / m (shading rate), but the cost is low; infrared smoke detectors can effectively detect large spaces The ...

Examples

Embodiment Construction

[0029] The following is attached with the manual Figure 2-7 The specific embodiment of the present invention will be described in further detail.

[0030] Such as figure 2 As shown, the present invention provides an aspirating smoke detection device, comprising a sampling pipe 2, on which several sampling holes 3 are arranged, and one end of the sampling pipe 2 is provided with an end cap for air flow balance 4. The end cap 4 is provided with a ventilation hole, and a through hole of φ8 (unmarked length units are all in millimeters in the embodiment) is opened on the sampling pipe 2 as the sampling hole 3, and the sampling hole is blown by the fan inside the equipment. 3 gas inhalation equipment, the diameter of the vent hole on the end cap 4 is configured according to the length of the sampling tube 2 or the connection mode of several tubes, and the air intake of the sampling tube 2 is configured to ensure that each tube can Balance the intake air, and ensure that each sa...

technical field

[0001] The invention relates to the technical field of fire fighting equipment, in particular to an aspirating smoke detection device. Background technique

[0002] In the prior art, commonly used smoke detectors include ordinary probe smoke detectors, infrared radiation smoke detectors and aspirating smoke detectors. In fire-fighting equipment, smoke detection and alarm are the most commonly used Detection means, after the detector alarms, the fire broadcast can be activated to evacuate personnel, the shutter door of the fire zone can be lowered to prevent the fire from spreading, and the fire pump can be started, etc. Effective and accurate detection is a very important part of the school's link.

[0003] The existing point-type smoke detectors are the most widely used and the largest in number, and their sensitivity is low, generally greater than 2 obs / m (shading rate), but the cost is low; infrared smoke detectors can effectively detect large spaces The ...

Examples

Embodiment Construction

[0029] The following is attached with the manual Figure 2-7 The specific embodiment of the present invention will be described in further detail.

[0030] Such as figure 2 As shown, the present invention provides an aspirating smoke detection device, comprising a sampling pipe 2, on which several sampling holes 3 are arranged, and one end of the sampling pipe 2 is provided with an end cap for air flow balance 4. The end cap 4 is provided with a ventilation hole, and a through hole of φ8 (unmarked length units are all in millimeters in the embodiment) is opened on the sampling pipe 2 as the sampling hole 3, and the sampling hole is blown by the fan inside the equipment. 3 gas inhalation equipment, the diameter of the vent hole on the end cap 4 is configured according to the length of the sampling tube 2 or the connection mode of several tubes, and the air intake of the sampling tube 2 is configured to ensure that each tube can Balance the intake air, and ensure that each sa...

Images