RU51709U1 - WATER HEAT TUBE BOILER - Google Patents

Abstract

The utility model relates to the field of energy and can be used in fire tube boilers for the production of hot water from heating systems and hot water supply. The proposed utility model solves the problem of simplifying the design and increasing heat transfer to the heat carrier. In a hot-water fire-tube boiler containing a fire chamber, smoke tubes, front and rear rotary chambers, a combustion chamber, a front door, the boiler additionally has a rear door, and a furnace chamber door is located in the front door moreover, the body of the combustion chamber is enclosed in a water jacket. In the process of fuel combustion, the resulting flue gases and flame radiation heat the walls of the combustion chamber and the water jacket. Continuing a handful in the combustion chamber, the flue gases enter the rear rotary chamber and then through the smoke tubes of the second stroke to the front rotary chamber, from where they are sent to the smoke pipes of the third stroke, passing through which they are removed through the chimney. To organize the movement of flue gases, a shut-off device is installed at the rear door of the hot-water fire tube boiler, which prevents flue gases from entering the chimney from the rear rotary chamber. Thermal insulation is designed to reduce heat loss through the external surfaces of the boiler. The heating of water (coolant) in a hot-water fire tube boiler occurs from the heat of the combustion products of the fuel transmitted to it through the walls of the smoke tubes. This design allows to increase the heat transfer from the combustible fuel, due to the reduction of energy loss and increase of the heat transfer area without increasing the dimensions of the hot-water fire tube boiler.

Description

The utility model relates to the field of energy and can be used in fire tube boilers for the production of hot water from heating systems and hot water supply.

Famous steam-water fire tube boiler by a.c. SU No. 1211503 (publ. 15.02.86), containing a burner, fire and smoke pipes with screw inserts, front and rear pivoting chambers, the latter of which is formed by a double-walled elliptical bottom, and water inlet and outlet pipes, and the boiler is additionally equipped with a drum - a separator with a steam condenser installed in it in the form of a coil, connected by lifting and lowering pipes with a cavity between the bottom walls with the formation of a natural circulation loop, while the separator drum and the coil are connected by a connecting pipe the wires with the valves installed on them are connected through the water, respectively, to the branch pipe and the branch pipes for supplying and withdrawing the latter, and the drum-separator has pipes for supplying and removing water with valves.

The disadvantage of this solution is the complexity of execution, maintenance and significant energy loss.

Known boiler KVS-08-K (BT) (http://www.iservis.ru//), consisting of a heat exchanger and a flame tube. The heat exchanger has a combustion chamber integrated in the heat pipe. Outside, the flame tube is washed by heated water. Along and around it in the boiler are smoke tubes of the third and second courses of flue gases, which are also washed by water, the bottom of the combustion chamber and the neck of the loading window are lined with refractory material.

The disadvantage of this solution is energy loss and a small resource of refractory protection.

The proposed utility model solves the problem of simplifying the design and increasing heat transfer to the coolant

To achieve the specified technical result in a fire-tube boiler containing a fire chamber, smoke tubes, front and rear pivoting chambers, a combustion chamber, a front door, the boiler additionally has a rear door, and a furnace chamber door is located in the front door, and the furnace chamber is enclosed in a water shirt.

Distinctive features of the proposed hot-water fire-tube boiler from the above known, closest to it, is that the hot-water fire-tube boiler additionally has a rear door, and the door of the combustion chamber is located in the front door, and the housing of the combustion chamber is enclosed in a water jacket.

Thanks to the presence of these signs, the design of the boiler is simplified, the surface area of the heat transfer to the coolant increases.

The proposed design is illustrated in the drawing, which shows a hot-water fire tube boiler.

The fire tube boiler contains a fire chamber 1 and smoke tubes, second 2 and third 3 turns, front 4 and rear 5 rotary chambers, chimney 6, front door 7, rear door 8, water jacket 9, cutter 10, furnace chamber door 11, furnace chamber, 12, grate 13, ash pan 14, thermal insulation 15.

The operation of the device is as follows: on the grate 13 through the door of the combustion chamber 11 located on the front door of the boiler 7, fuel is loaded, to maintain its combustion through the ash pan 14, air is supplied to the combustion chamber 12.

In the process of fuel combustion, the resulting flue gases and flame radiation heat the walls of the combustion chamber and the water jacket 9. Continuing the handful in the combustion chamber 1, the flue gases enter the rear rotary chamber 5 and then through the smoke tubes of the second stroke 2, into the front rotary chamber 4, from where they are sent into the smoke pipes of the third stroke 3, passing through which, are removed through the duct 6.

To organize the movement of flue gases, a shut-off device 10 is installed at the rear door of the boiler 8, which prevents the ingress of flue gases from the rear rotary chamber into the chimney. Thermal insulation 15 is designed to reduce heat loss through the outer surfaces of the fire tube boiler. The heating of water (coolant) in a hot-water fire tube boiler occurs from the heat of the combustion products of the fuel transmitted to it through the walls of the smoke tubes.

This design allows to increase the heat transfer from the combustible fuel, due to the reduction of energy loss and increase of the heat transfer area without increasing the dimensions of the hot-water fire tube boiler.

Claims (1)

A fire tube boiler containing a fire chamber, smoke tubes, front and rear pivoting chambers, a combustion chamber, a front door, characterized in that the boiler further has a rear door and a furnace chamber door is located in the front door, the furnace chamber housing being enclosed in a water jacket .