The residual pressure controller is an electrical control unit and the central nerve of the entire residual pressure monitoring system . The residual pressure controller plays an important role in the residual pressure control of the entire positive pressure air supply system, and is an indispensable and important part of the residual pressure monitoring system . The residual pressure controller is mainly used to receive the residual pressure detector signal, and to control the bypass valve (electric multi-page split regulating valve) to open and close by controlling the electric pressure relief actuator . It has an information upload function, which can upload the overpressure pressurization signal of the residual pressure detector and the opening and closing signal of the bypass valve to the residual pressure monitor (host) , and can be remotely controlled by the host installed in the fire control room.
The residual pressure controller is mainly divided into two types according to the installation environment and shape:
One is the control box, also known as the air valve control box, the size is 300*400*250 (mm). The appearance is similar to the distribution box, and it can be equipped with 24V or 220V control power according to the type of electric actuator. Independent installation, you can choose indoor/outdoor box according to indoor/outdoor environment. Its advantages are flexible installation, no space restrictions, and easy maintenance; its disadvantages are also obvious, heavy and inconvenient for transportation, and relatively complicated installation.
One is the control module. As the new residual pressure control unit, it is mounted on a guide rail with a size of 130*95*58 (mm) and is installed in the distribution box of the pressurized fan. Its advantage is that it is easy to transport, more convenient to install, save space, more functional than the control box, compatible with 24V and 22V electric actuators.
Shenzhen Lingxiang Equipment Co., Ltd. developed the evacuation channel residual pressure monitoring system strictly based on the national standards GB50016-2014 "Code for Fire Protection Design of Buildings" and GB51251-2017 "Technical Standards for Building Smoke Control and Exhaust Systems", and GB16806-2006 "Fire Control Linkage Control System" . At present, the application areas of Lingxiang's residual pressure monitoring system have covered airports, hotels, hospitals, real estate and other industries, and maintain in-depth cooperation with major real estate developers.
Fluoropolymer Heaters
Teflon is Polytetrafluoroetylene, referred to as Teflon, PTFE, F4, etc.It is also known as Teflon, Teflon, Teflon, Teflon and so on because of its pronunciation.Polytetrafluoroethylene (ptfe) is a kind of plastic, which is used to manufacture heaters. It has been successfully used in chemical equipment heating. It has the characteristics of multi-layer and three-dimensional heating.
The working pressure, working temperature, heat transfer coefficient and installation method of the teflon heater vary greatly according to different types, different shell materials and different thermal media.The chemical properties of teflon are very stable and the corrosion resistance is especially good.The surface of the teflon tube is smooth and moderately flexible, so it is not easy to scale due to the slight vibration when using it.The teflon heater is small in size and compact in structure. The heat transfer area per unit volume of the equipment is more than 4 times of that of the shell heater.Flexible teflon tubes work safely under shock and vibration of fluids, and the tubes can be made into special shapes as needed.Teflon has low thermal conductivity, poor mechanical properties than metal, and is not resistant to high temperature.The use of small diameter, thin wall, although the thermal conductivity and mechanical properties of compensation, but can only be used in the case of low pressure and low temperature.The production of teflon steam heater and teflon hot water heater has become more and more mature, and widely used in chemical industry, medicine, pickling and other corrosive industries.
PTEF Immersion Heaters,Ptfe Immersion Heater Element,Fluoropolymer Heaters
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