Lingxiang Residual Pressure Monitoring System Is an Intelligent Measurement and Control Equipment fo

On the basis of fully understanding GB code for fire protection design of high rise civil buildings, the bypass valve controls the positive pressure value of pressurized air supply. Firstly, the corridor pressure measurement and control device realizes the accurate monitoring of differential pressure, controls the positive pressure value of pressurized air supply through the bypass valve, and carries out residual pressure control with the positive pressure air supply equipment. Its key core is differential pressure monitoring. In case of fire, it can ensure that the residual pressure value of smoke proof staircase is 40pa-50pa, and that of front room, shared front room, front room of fire elevator room and closed refuge floor (room) is 25pa-30pa. It can not only ensure that smoke and heat can not be invaded, but also ensure that people in the fire area can easily open the door to enter the smoke prevention area, so as to create a smoke-free area and smoke-free passage for people who escape.

At present, some systems in the market realize differential pressure monitoring through residual pressure micro differential pressure sensor monitoring module, pressure transmitter, pressure switch and other equipment, but there are the following problems:

The monitoring module of residual pressure micro differential pressure sensor is an integrated circuit. It is the original Zui device for pressure measurement. It can only be combined with other peripheral circuits and computer chips to form products with measurement function. Therefore, the monitoring module of residual pressure micro differential pressure sensor can not be directly applied to the measurement and control of residual pressure.

The pressure transmitter is a component level product developed by using the residual pressure micro differential pressure sensor monitoring module. Its function is to convert the measured value of differential pressure into 4-20mA standard current signal output. The pressure transmitter cannot directly drive the bypass valve of the positive pressure forced draft fan. Therefore, the pressure transmitter is not directly applicable to the control of residual pressure range.

Mechanical pressure switch has low measurement accuracy and large measurement error due to its working principle. Because it can only act based on one differential pressure setting point, it can not realize the differential pressure "hysteresis" function, and can not ensure that the differential pressure between the front room and corridor is controlled at 25Pa 30Pa, and the differential pressure between the staircase and corridor is controlled at 40Pa 50pA. Therefore, the differential pressure switch cannot measure and control the residual pressure range.

Lingxiang residual pressure monitoring system is an intelligent measurement and control equipment specially designed for residual pressure detection and control in smoke proof staircase, front room, shared front room, front room of fire elevator room, closed refuge floor (room), etc.

Lingxiang residual pressure monitoring system

The system, also known as residual pressure control system, is composed of lx-jkq fire emergency evacuation residual pressure monitor, lx-kzq fire emergency evacuation residual pressure controller, lx-cgq fire emergency residual pressure sensor and lx-xyf fire emergency evacuation electric pressure relief air valve actuator through computer data bus. The residual pressure of positive pressure air supply is detected through the residual pressure monitoring modules of each floor working independently, Send the control command to the residual pressure controller, and then control the working state of the control module through the residual pressure controller to realize the corresponding spatial differential pressure control, so as to maintain the reasonable range of residual pressure value.

Product standards and specifications involved in the equipment; Engineering standards and specifications; Acceptance standards and specifications must fully meet all current regulations and specifications of the people's Republic of China, including but not limited to:

JGJ code for electrical design of civil buildings

GB intelligent building design standard

GB code for fire protection design of buildings

GB technical standard for smoke control and smoke exhaust system of buildings LW