Ventilation system

Abstract

The invention discloses a ventilation system, which relates to the field of ventilation and ventilation. The main purpose is to monitor the oxygen concentration in a foundation pit in real time, and to supply air to the foundation pit in real time or stop the air supply according to the monitoring result. The main technical solution of the present invention is: the ventilation system includes: at least one monitoring device, a control device and a ventilation device, the monitoring device is used to monitor the gas concentration at a predetermined position; Gas concentration signal, and generate control instructions according to the received gas concentration signal; the ventilation device is connected with the control device, and performs ventilation work according to the control instruction of the control device. The ventilation system of the present invention can monitor the oxygen or carbon dioxide in the foundation pit in real time, and control the ventilation device to ventilate the foundation pit and stop ventilation according to the monitored gas concentration data, realizing real-time monitoring and real-time air supply, effectively protecting The life safety of the construction personnel is high, the work efficiency is high, and resources are saved.

Description

technical field [0001] The invention relates to the field of ventilation, in particular to a ventilation system. Background technique [0002] In the construction of transmission lines, the transmission tower needs to be built very high and heavy, so the foundation of the transmission line needs to be built very strong, and the foundation of the transmission line needs to be excavated according to the volume of the transmission tower. foundation pit. [0003] In the foundation construction of transmission lines, there is a kind of foundation that is manually excavated. This kind of foundation needs to be manually excavated underground. The deepest excavation depth has exceeded 20 meters. The average excavation cycle of each foundation pit is about one month. Due to long-term precipitation, the concentration of harmful gases at the bottom of the foundation pit exceeds the standard, and the oxygen concentration required by the construction workers decreases, endangering the p...

AI Technical Summary

Problems solved by technology

[0003] In the foundation construction of transmission lines, there is a kind of foundation that is manually excavated. This kind of foundation needs to be manually excavated underground. The deepest excavation depth has exceeded 20 meters. The average excavation cycle of each foundation pit is about one month. Due to the long-term precipitation, the concentration of harmful gases at the bottom of the foundation pit exceeds the standard, and the oxygen concentration required by the construction personnel decreases, endangering the personal safety of the construction personnel.

[0004] At present, the construction methods used in the construction of the same industry, one is to use a blower to blow air into the foundation pit for 5 minutes before the construction personnel go down the pit, and then go down to the pit. This method cannot ensure that the oxygen concentration at the bottom of the pit during the entire construction process can be maintained To meet the needs of construction personnel, if the construction personnel work for a long time, there is a risk of suffocation, but if the air is always supplied to the foundation pit, it will lead to waste of resources

Another method of operation is to use a hand-held oxygen concentration detector to monitor the oxygen concentration in the foundation pit, but this method cannot realize timely air supply to the foundation pit when the oxygen concentration decreases, and cannot realize real-time monitoring and real-time air supply , cannot guarantee the personal safety of the construction workers who work in the foundation pit for a long time

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