Measuring method of heat exhaust efficiency measuring system for tunnel smoke outlet
A technology for measuring system and heat removal efficiency, applied in measuring devices, testing of machine/structural components, instruments, etc., can solve problems such as structural damage, long distance spread of smoke, personnel safety hazards, etc., and achieve outstanding substantive characteristics and ideas. Subtle, well-designed effects
Active Publication Date: 2018-08-17
应急管理部四川消防研究所
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If the heat released by the fire source cannot be discharged through the smoke exhaust system in time, it may cause serious harm to the safety of personnel in the building / tunnel, affect firefighters from approaching the fire source for fire fighting and rescue, and even cause serious damage to the structure
[0003] At present, the conventional judgment method for examining the smoke control effect of the tunnel smoke exhaust system is mainly through on-site measurement of parameters such as smoke temperature, visibility, and smoke layer height. The gas spreads far along the length of the tunnel, so it is difficult to measure a large number of these characteristic parameters of the flue gas, and these parameters only reflect the local state of the flue gas, which cannot accurately evaluate the overall flue gas control effect of the smoke exhaust system, let alone quantitatively reflect the exhaust gas. Overall heat removal performance of the smoke system
At present, there is no measurement method on the market for testing the heat exhaust efficiency measurement system of the tunnel smoke exhaust port
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0043] Such as figure 1 As shown, the measurement method of the heat exhaust efficiency measurement system of the tunnel smoke exhaust outlet, the heat exhaust efficiency measurement system of the smoke exhaust outlet includes a PC 1, and a 485-type data collector 3 connected to the PC 1 through a 485-type data line 2, the number is two The above temperature sensors 4 arranged equidistantly from top to bottom at the smoke outlet, and more than two wind speed sensors 6 arranged equidistantly from top to bottom at the smoke outlet, all the temperature sensors 4 And all wind speed sensors 6 are all connected with 485 type data collectors 3 respectively; As preferred implementation mode, temperature sensor 4 of the present invention selects K type thermocouple for use, simultaneously, adopts thermoelectric between 485 type data collectors 3 and K type thermocouples Even compensation lead wire 5 is connected; And, wind speed sensor 6 selects high-precision pitot tube for use, corre...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a measuring method of a tunnel smoke outlet heat extracting efficiency measuring system. The problem that in the prior art, the measuring method of the tunnel smoke outlet heat extracting efficiency measuring system does not exist is solved. The smoke outlet heat extracting efficiency measuring system comprises a PC, a data collector, two or more temperature sensors and two or more wind speed sensors; the data collector is connected with the PC through a data line, the temperature sensors are sequentially arranged at a smoke outlet from top to bottom at equal intervals, the wind speed sensors are sequentially arranged at the smoke outlet from top to bottom at equal intervals, and all the temperature sensors and all the wind speed sensors are connected with the data collector separately; the measuring method mainly comprises the step that the system is arranged at the smoke outlet to measure and calculate the flue gas mass flow rate and flue gas average temperature rising data, and the heat extracting efficiency is calculated out by using four formulas in sequence. Please see the formulas in the description.
Description
technical field [0001] The invention relates to the field of tunnel fire protection engineering, in particular to a measuring method for a heat exhaust efficiency measuring system of a tunnel smoke outlet. Background technique [0002] During the fire process, the combustion of combustibles releases a large amount of high-temperature toxic smoke, and also releases a large amount of heat. If the heat released by the fire source cannot be discharged through the smoke exhaust system in time, it may cause serious harm to the safety of personnel in the building / tunnel, affect firefighters from approaching the fire source for fire fighting and rescue, and even cause serious damage to the structure. [0003] At present, the conventional judgment method for examining the smoke control effect of the tunnel smoke exhaust system is mainly through on-site measurement of parameters such as smoke temperature, visibility, and smoke layer height. The gas spreads far along the length of the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 蒋亚强李乐张泽江
Owner 应急管理部四川消防研究所