Expansive type thermostatic hot water system

Abstract

The invention discloses an expansive type thermostatic hot water system which comprises gas-fired boilers, a water supply header pipe and a water return header pipe. The water return header pipe is connected with an expansion water tank which is connected with a water make-up pipe, the water make-up pipe is connected with a water make-up pump which is connected with a water make-up tank, and the water make-up tank is connected with a water softener which is connected with a municipal tap water pipe network; circulating pumps are arranged in the positions, located at inlets of the gas-fired boilers, of the water return header pipe; the tail end of the water supply header pipe is connected with a water distribution tank, and the tail end of the water return header pipe is connected with a water collecting tank; and the gas-fired boilers are connected with a gas inlet pipe, a first gas branch pipe and a second gas branch pipe are connected to the gas inlet pipe in series, and a gas-firedboiler hot water thermostatic valve is arranged on the second gas branch pipe in a serial connection mode. Effects of the expansive type thermostatic hot water system can be achieved by only closing afirst gas valve and opening a second gas valve, the heat generating capacities of the boilers are adjusted by adjusting the gas inlet capacities of the gas-fired boilers, accordingly, thermostatic control is achieved, and the outlet water temperatures of the gas-fired boilers are controlled to be within a preset range.

Description

technical field [0001] The invention relates to the technical field of gas boiler heating, in particular to a gas boiler constant temperature hot water supply system. Background technique [0002] With the development of economy and society, people's living standards are improving day by day, and the northeastern region has basically achieved full coverage of central heating. However, in the central region of my country, the winter temperature is low, and the coverage of central heating is still small, and many communities have not connected to heat. company. Therefore, in the central region of our country, many communities have their own heating systems. Coal-fired boilers are highly polluting and have been phased out; gas-fired boilers use gas (such as natural gas, liquefied petroleum gas, etc.) as fuel, and heat water through burners to achieve heating and provide hot water for living and bathing, with fast heating and low noise , no dust, it is an economical boiler vari...

AI Technical Summary

Problems solved by technology

This kind of intelligent gas boiler has high cost and complex mechanism. In the later use process, once there is a problem in any part of the complex temperature monitoring and control mechanism, it will not be able to control the outlet water temperature well, especially the maintenance process takes a long time. The maintenance process has a great impact on the normal heat consumption of the heat-consuming unit

Of course, the maintenance cost of intelligent gas boiler is also higher

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