Pressure and liquid level control system for ship high-temperature water buffer cabinet

Abstract

The invention relates to a pressure and liquid level control system for a ship high-temperature water buffer cabinet. The system comprises a main engine high-temperature water buffer cabinet, a compressed air inlet pipeline electromagnetic valve, a water replenishing pipeline inlet electromagnetic valve and a liquid level switch control system. The compressed air inlet pipeline electromagnetic valve supplies air to the main engine high-temperature water buffer cabinet after being opened; the water replenishing pipeline inlet electromagnetic valve supplies water to the main engine high-temperature water buffer cabinet after being opened; and the liquid level switch control system enables the compressed air inlet pipeline electromagnetic valve and the water replenishing pipeline inlet electromagnetic valve to work according to a liquid level change in the main engine high-temperature water buffer cabinet. A relay is adopted to enable the compressed air inlet pipeline electromagnetic valve and the water replenishing pipeline inlet electromagnetic valve to supplement air and water for the main engine high-temperature water buffer cabinet, pressure constancy and liquid level control inthe main engine high-temperature water buffer cabinet are achieved, and compared with a PLC, by using the system of the invention, programming control is performed and a programmable logic controlleris arranged to be integrated in a ship monitoring alarm system. The system is low in cost, convenient to overhaul and high in universality.

Description

technical field [0001] The invention relates to the field of ship high-temperature water systems, in particular to a pressure and liquid level control system for a ship high-temperature water buffer tank. Background technique [0002] At present, some high-temperature water systems of main engines on ships use high-temperature water buffer tanks. Compared with traditional expansion water tanks, high-temperature water buffer tanks are used to facilitate the adjustment of the working pressure of the high-temperature water system of the main engine at any time according to the operating requirements of the main engine during later operation, instead of After the traditional expansion water tank is installed in place, the pressure of the high temperature water system of the main engine cannot be adjusted. [0003] In the existing ship design, in order to realize the automatic control of the liquid level and pressure of the high-temperature water buffer tank of the main engine, i...

AI Technical Summary

Problems solved by technology

[0002] At present, some high-temperature water systems of main engines on ships use high-temperature water buffer tanks. Compared with traditional expansion water tanks, high-temperature water buffer tanks are used to facilitate the adjustment of the working pressure of the high-temperature water system of the main engine at any time according to the operating requirements of the main engine during later operation, instead of After the traditional expansion water tank is installed in place, it is impossible to adjust the pressure of the high temperature water system of the main engine

[0003] In the existing ship design, in order to realize the automatic control of the liquid level and pressure of the high-temperature water buffer tank of the main engine, it is generally adopted to set and integrate the program into the ship monitoring and alarm system, but this method has poor versatility. , the program needs to be rewritten; there is also a separate PLC for programming control, but this method is costly, and when the PLC fails, maintenance is difficult, and the program needs to be refreshed or the PLC controller needs to be replaced, which causes a lot of inconvenience to the ship operation

Images