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Sampling pipe network design authentication and optimization method of air suction type smoke sensity fire detecting system

A technology for detecting smoke and fire detection systems, applied in computing, special data processing applications, instruments, etc., and can solve problems such as the inability to apply other products

Inactive Publication Date: 2006-01-11
SHENYANG FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there is no corresponding processing system and method in China, and similar processing systems abroad can only perform simulation calculations for their own supporting equipment, and cannot be applied to other products

Method used

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  • Sampling pipe network design authentication and optimization method of air suction type smoke sensity fire detecting system
  • Sampling pipe network design authentication and optimization method of air suction type smoke sensity fire detecting system
  • Sampling pipe network design authentication and optimization method of air suction type smoke sensity fire detecting system

Examples

Experimental program
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specific Embodiment approach

[0174] The input variable is that the length of the main pipe is 50m, and there is a bend at 8 meters away from the end cap. There are 10 sampling holes in total, the interval between the sampling holes is 5m, the diameter of the end cap is 4mm, and the diameter of the other sampling holes is 3mm.

[0175] The calculation results through formulas 6, 11, 16, and 17 are as follows:

[0176] Air intake per hole (L / m): Q(0)=4.489

[0177] Q(1)=2.53

[0178] Q(2)=2.55

[0179] Q(3)=2.586

[0180] Q(4)=2.643

[0181] Q(5)=2.726

[0182] Q(6)=2.837

[0183] Q(7)=2.979

[0184] Q(8)=3.157

[0185] Q(9)=3.372

[0186] Inspiratory percentage: QQ(0)=15.03%

[0187] QQ(1) = 8.47%

[0188] QQ(2) = 8.54%

[0189] QQ(3) = 8.66%

[0190] QQ(4) = 8.85%

[0191] QQ(...

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Abstract

The present invention relates to a sampling pipe network design, verification and optimization method of aspirating smoke fire detection system. Said invention utilizes the related principle of fluid mechanics to analyze fire detector sampling pipe network from fluid movement angle and create mathematical model, and utilizes the engineering application requirements to define length of sampling pipe, spacing distance between sampling holes and number of sampling holes, so that all the sampling points have uniform and equilibrium detection sensitivity.

Description

technical field [0001] The invention belongs to the supporting technology of fire alarm, in particular to a design verification and optimization method for an engineering pipe network of an aspirating smoke detector, which is a supporting design method for an ultra-early aspirating smoke detector. Background technique [0002] The aspirating smoke detector adopts the working mode of active aspirating, and because it can have high detection sensitivity to smoke, it has been widely used in some special applications. The aspirating smoke detection system is mainly composed of two parts: a gas sampling pipe network and a detection host: [0003] a. The function of the gas sampling pipe network is to collect air samples in the protected area. Sampling holes are set on the gas sampling pipe. Due to the function of the suction pump in the detection host, negative pressure is generated in the pipe network to form a stable air flow. The air samples in the protected area are drawn in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘玉宝梅志斌王文青潘刚余广智王勇俞
Owner SHENYANG FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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