RU2409793C2 - Hot water boiler - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: hot water boiler includes stack equipped with water jacket with water discharge branch pipe in upper part of jacket, cold water supply pipe, furnace with water-cooled upper, rear and two side sections between which there located is upper group of heat exchange elements and lower group of heat exchange elements with grate. Upper water-cooled section has uprise at an angle of 3-5° to horizontal, and upper group of heat exchange elements is installed at an angle of 8-10° to opposite walls of side sections. Boiler includes lower water-cooled section. Upper group of heat exchange elements consists of two heat exchange elements each of which is made of tubes connected to each other with plates and located one above the other. Lower heat exchange element is installed with a gap relative to rear water-cooled section, and upper heat exchange element is installed with a gap in relation to front wall.

EFFECT: increasing efficiency, reducing fuel consumption and improving boiler operating reliability.

4 dwg

Description

The invention relates to a power system and can be used for heating domestic and industrial facilities.

Known a water boiler containing a chimney equipped with a water jacket with a water outlet in the upper part of the shirt, a cold water supply pipe, a furnace with water-cooled upper, rear and two side sections located between it, between which there is an upper group of heat-exchange elements at the exit of flue gases and the lower group of heat-exchange elements, the upper water-cooled section being raised at an angle of 3-5 ° to the horizontal, and the upper group of heat-exchange elements and the cold water inlet pipe Mounted at an angle of 8-10 ° to the opposite walls of the side sections. The walls of the water-cooled sections are interconnected by couplers. (Patent RU No. 2133413, MKI F24H 1/44, publ. 07/20/99, bull. No. 20.)

The disadvantage of this boiler is its low efficiency.

The objective of the invention is to increase efficiency, reduce fuel consumption and increase the reliability of the boiler.

The task is achieved in that in a boiler containing a chimney equipped with a water jacket with a water outlet pipe at the top of the shirt, a cold water supply pipe, a furnace with water-cooled upper, rear and two side sections located between it, between which the upper group heat-exchange elements and the lower group of heat-exchange elements with a grate, an additional water-cooled lower section is installed, and the upper group of heat-exchange elements consists of two heat-exchange elements Each of which is made of pipes, interconnected plates disposed one above the other, the lower heat exchange element is mounted with clearance relative to the rear section of the water-cooled, and the upper heat exchange element is mounted with clearance relative to the furnace sections.

The invention is illustrated by drawings.

In Fig.1 shows a hot water boiler, and in Fig.2 and 3 - its transverse sections, Fig.4 is a diagram of the installation of heat exchange elements.

The hot water boiler contains a chimney 1, a cold water supply pipe 2, a furnace 3 with water-cooled upper 4, rear 5, lower 8 and two side sections 6 and 7 located inside it, between which the upper group of heat-exchange elements, consisting of two heat-exchange elements, is placed - the top 9, attached (for example, by welding) to the rear section 5 with a gap of 95-100 mm relative to the front wall (section with the furnace hole) (see figure 4), and the bottom 10, attached (for example, by welding) to the front wall ( wall of the furnace hole ) with a gap of 95-100 mm relative to the rear water-cooling section 5, and the lower group of heat-exchange elements 11, on which the grate is installed 12. The smoke pipe 1 is equipped with a water jacket 13 with a pipe 14 for discharging hot water and connected to the expansion tank 15. The walls of the water-cooling sections are interconnected by couplers 16. The upper group of heat exchange elements 9 and 10 are structures made of pipes hermetically connected to each other by plates, for example, by welding. The pipes are made with a diameter of 50 mm, the distance between the centers of adjacent pipes is 80 mm. The upper water-cooled section 4 is made with a rise at an angle of 3-5 ° to the horizontal, and the upper group of heat-exchange elements is installed at an angle of 8-10 ° to the opposite walls of the side sections 6 and 7.

The hot water boiler operates as follows.

The system is filled with water, fuel is loaded into the furnace 3, for example coal or firewood, and the boiler starts to kindle. The water is heated in sections 4, 5, 6, 7, 8 of the heat exchange elements 9, 10, 11. There is a circulation of water in the boiler and heating system. Due to the fact that the upper group of heat-exchange elements 9 and 10 is made of pipes and the heat-exchange elements are located one above the other, the flue gases around them completely give off heat, as the length of the chimney increases, thereby increasing the efficiency installation, increases heat transfer between flue gases and water. The design of the thermal elements from the pipes was chosen because, in comparison with the plates, the heating area of the pipe is larger. At the outlet, the water temperature is 95 ° C. When comparing the heating results of the claimed device and the prototype when heating a room of the same volume, fuel consumption is reduced by about 30%.

The implementation of the lower section of the water-cooled also contributes to increased heat transfer, as the ash settling to the bottom also gives off heat.

By increasing the stiffness of the boiler due to the welded tubes of the heat exchange elements, the boiler withstands water pressure of 2 atmospheres (standard boilers withstand pressure of 1 atmosphere).

Thus, the technical result of using the invention is:

1. The increase in efficiency due to increased efficiency installation by increasing the chimney.

2. In increasing the reliability of the boiler by increasing the rigidity of the walls.

The device is easy to manufacture and can be manufactured in an industrial environment.

Claims (1)

A water boiler containing a chimney equipped with a water jacket with a water discharge pipe at the top of the shirt, a cold water supply pipe, a furnace with water-cooled upper, rear, and two side sections located inside it, between which an upper group of heat-exchange elements and a lower group of heat-exchange elements are placed with a grate, and the upper water-cooled section is made with a rise at an angle of 3-5 ° to the horizontal, and the upper group of heat-exchange elements is installed at an angle of 8-10 ° to the opposite walls fettered sections, characterized in that it contains a lower water-cooled section, and the upper group of heat-exchange elements consists of two heat-exchange elements, each of which is made of pipes connected by plates and located one above the other, and the lower heat-exchange element is installed with a gap relative to the rear water-cooled section, and the upper heat-exchange element is installed with a gap with respect to the front wall.

Images