RU19142U1 - WATER BOILER UNIT - Google Patents

Abstract

1. A water boiler unit comprising a combustion chamber, a convective tube bundle and a chamber for cooling the exhaust flue gases and heating water and air supplied to the boiler and burner device, characterized in that to increase the heat output of the boiler unit, improve heat transfer between the coolant and water, organization of uniform distribution of the flue gas flow along the front of the annular space of the compressed tube bundle, guide vanes are built into the combustion chamber. 2. A water boiler unit according to claim 1, characterized in that in order to increase the turbulence of the water flow and prevent deposits on the inner surfaces of the pipes, counter-directed helical grooves are applied. The boiler unit according to claim 1, characterized in that to stabilize the flame and increase the heat output of the burner, a refractory perforated nozzle with holes in the form of a Venturi nozzle with an opening angle of the confuser 27and diffuser 7 and a finned inner surface is installed.

Description

A useful model refers to the power system and can be used for heating and hot water supply of residential, public and industrial buildings and premises.

Scope - heating boiler rooms.

Known hot water boilers of type KV (hot water boiler, GOST 10617-83), KSV (steel boiler, hot water), steel pipe hot water boiler with gaseous fuel like Agro-N, equipped with block burner devices of type GB-F-0.85, designed to burn natural low pressure gas in boiler furnaces.

The disadvantage of these boilers is the low efficiency due to the inefficient organization of the passage of smoke from the furnace into the convection part, the movement of water in the tube bundle and the organization of the flame of the combustion of natural gas.

A utility model is proposed that eliminates these shortcomings and wishes to increase the heating capacity of the boiler unit without increasing the consumption of natural gas.

This is achieved by the fact that guide vanes are installed in the combustion chamber, ensuring uniform distribution of the coolant along the front of the annular space of the tube bundle.

To improve heat transfer between the coolant and heated water, the tube bundle has a compressed shape, which allows to increase the velocity head of the coolant, and to increase the turbulence of the water jet, the inner surfaces of the pipes have a roughness in the form of counter-directed helical grooves that do not allow the formation of flaking on the pipe walls.

To stabilize the flame of the gas torch, a tunnel was used which is part of the burner device, into which a refractory perforated nozzle with holes in the form of a Venturi nozzle with an opening angle of the confuser 27 and diffuser 7 and a silver internal surface is integrated, which allows to increase its thermal power and emissivity of the tunnel surface with nozzle.

All this will increase the heat output of the boiler unit without increasing energy costs.

JLG44 / CW

figure 4 is a sectional view of the nozzle in BB; but Fig. L is a view of a nozzle depicting the profile of a silver inner surface of the Venturi nozzle; in Fig. O the unfolded inner surface of the pipe with counter-directed helical grooves.

The boiler unit consists of a housing 1, a combustion chamber 2, a cooling chamber for exhaust gases and heating of water and air 3, a burner device A, a refractory perforated nozzle 5, a compressed tube bundle 0, a coil 7 for preheating the water supplied to the tube bundle, a coil 8 for heating the air supplied by the burner device and the guide vanes 9 in the combustion chamber.

The boiler operates as follows

The water preheated in the coil 7 enters the tubes of the tube bundle b of the housing 1. The heated air in the coil 8 enters the burner device 4, in the tunnel of which a perforated refractory nozzle 5 with holes in the form of a Vsnturi nozzle is built in to stabilize the flame and intensify the combustion process, after which flue gases, evenly distributed with the help of guide vanes 9 along the front of the annular space of the tube bundle, enter the cooling chamber and then are sent to the exhaust pipe by the exhaust fan .

Sources of information taken into account during the examination.

1. Stolpner V.V., Panyushova Z.F., Reference manual for personnel of gasified boiler houses, L., Nedra, 1990.3 2. Glinka N.L., chemistry, Chemistry, L., 1973,727 pp.

Z. Avt. testimonial. - ® 1590868 - prototype.

The authors:/

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Claims (3)

1. A water boiler unit comprising a combustion chamber, a convective tube bundle and a chamber for cooling the exhaust flue gases and heating water and air supplied to the boiler and burner device, characterized in that to increase the heat output of the boiler unit, improve heat transfer between the coolant and water, organization of uniform distribution of the flue gas flow along the front of the annular space of the compressed tube bundle, guide vanes are built into the combustion chamber.  2. The hot water boiler unit according to claim 1, characterized in that in order to increase the turbulence of the water flow and prevent deposits on the inner surfaces of the pipes, counter-directed helical grooves are applied. 3. The boiler unit according to claim 1, characterized in that to stabilize the flame and increase the heat output of the burner, a refractory perforated nozzle is installed with holes in the form of a Venturi nozzle with an opening angle of the confuser of 27 ^o and the diffuser 7 ^o and finned inner surface.