Marine constant pressure device is a complete set of Marine equipment which integrates the functions of heat exchange, cold (hot) water circulation, constant pressure, exhaust, water refill, filtration, water treatment and electrical control in the circulating cold (hot) medium water system of Marine central air conditioning. The device is composed of heating and heat exchange device (plate heat exchanger), steam flow regulating valve group, trap valve group, constant pressure expansion diaphragm tank, automatic exhaust device, pressure difference controller, water supply isolation device, ionized water processor, electric and manual valves and control units.

Marine constant pressure device has the following characteristics:

(1) Marine constant pressure device is an ideal replacement product for closed cold (hot) medium circulating water system of Marine air conditioning system. Because of the cancellation of the traditional high open expansion tank, it also solves many disadvantages brought by the expansion tank arranged outside the upper deck or cabin of the hull in the past;

(2) Automatic conversion of cooling and heating conditions; Automatic control of the flow of heating steam into the unit; The exhaust system automatically eliminates the free gas in the circulating water and the gas dissolved in the water, which solves the air blockage, corrosion and loss caused by the presence of gas in the circulating water that has been difficult to solve for a long time in the ship air conditioning system. At the same time, it also effectively prevents the cavitation of the pump, thereby reducing and reducing the maintenance workload of the equipment and prolonging the service life of the equipment.

(3) The constant pressure value of the circulating water system can be adjusted at any time according to the needs of the air conditioning system of the ship, and its constant pressure accuracy is high (±0.1bar);

(4) Automatic water replenishment according to the pressure reduction of the system set point;

(5) The control system displays the actual operating parameters of the system and has an automatic alarm of timeout water replenishment and an audible and visual alarm of equipment failure;

(6) Compact structure, light weight, easy maintenance. After the device is in place, the site only needs to connect the relevant pipeline with the device to put into commissioning and operation, thus reducing the installation workload and shortening the construction period;

(7) The device can adjust, choose and restructure various functions and components according to the scale of various types of ship air conditioning systems and system configuration characteristics, and can also adjust or split the shape and layout of the device according to the layout of the device installation cabin equipment.