RU6870U1 - TUBE BOILER - Google Patents

Abstract

1. A water tube boiler, including a burner, radiation and convection parts, with longitudinally and symmetrically located, with transverse distributing and collecting manifolds, frontal with openings for burners and rear with openings for flue gases of the panels of the radiation part, ducts of the convective part made of cooled partitions, with heat exchange surfaces located in them, characterized in that the transverse distributing and collecting manifolds of the front panel, rear panel of the radiation part, screen surfaces and partitions of the convective part, and heat transfer pipes of the enclosing surfaces are connected to longitudinally located upper and lower distributing and collecting manifolds, and spacers are tightly attached to the heat transfer pipes of the enclosing surfaces and partitions. 2. The boiler according to claim 1, characterized in that partitions and bypass pipes are installed on the distributing and collecting headers. The boiler according to claim 1, characterized in that the transverse distributing and collecting manifolds of each partition and each screen surface are alternately respectively connected to the left longitudinally distributed distributing and collecting manifolds, and the rest to the right.

Description

F22 B37 / 12

The utility model relates to the field of heat power engineering, and more particularly to water-tube boilers for layered and chamber

burning fuel.

Known water-tube heating boiler HP-18 designed for layered and chamber combustion of fuel (see Borschev D.Ya., Cast iron and steel heating boilers. M. Energoizdat, 1992.)

The boiler contains a firebox with grates or a gas-oil burner. Heat exchange surfaces consist of two half sections with distributing and collecting headers. Each half-section consists of individual screen surfaces welded from straight d76 pipes. ё89mm.

The radiation chamber of the boiler is formed by the extreme pipes of each screen from the axis of the boiler and the longitudinal gas partitions installed behind these pipes, and the partitions are made of brick and in their lower part are the walls of the furnace.

Other pipes of each screen serve as convective surfaces. The walls and ceiling are made of bricks and are installed outside the pipe part.

F22B31 / 00

F 22 B37 / 40

TUBE BOILER

The spaces between the longitudinal gas partitions and the longitudinal enclosing walls under the convective parts of the boiler serve as gas ducts for removing cooled gases.

The disadvantages of this design are:

1. Low reliability of the heat transfer pipes in the dead ends of the water circulation.

2. The presence of a significant amount of brickwork and an increase in the cost of the boiler due to additional volumes of construction work.

The closest in technical essence and the solved problem of the proposed facility is the well-known steel-water boiler designed for heating the heating water of residential and industrial facilities. (Utility Model Certificate No. 4363 dated July 24 ,95, Boiler.)

The boiler contains the furnace and convection parts with, collectors, flues and partitions of the furnace; a front panel with openings for the burner device and a rear saw with an opening for flue gases are installed.

convective parts are made of water-cooled screen

I partitions and partition walls in which are installed

double screen heating surfaces made of pipes d 28

x3. The collectors of the furnace and convection parts are divided into sections

deaf partitions.

The disadvantages of this design are:

1. When using the boiler design for heating

2. When using the boiler without special cleaning of the circulating water in the pipe surfaces of the boiler, especially in pipes of small diameter, a significant amount of sludge falls out, which will lead to its rapid failure.

The technical problem, which the proposed utility model is aimed at, is to increase the reliability of the boiler, provided that it works with the source water, i.e. untreated and unprepared, as well as improving the manufacturability and repair by:

-application of tube blanks for screen heat exchangers and fencing: their surfaces of the same size,

-the possibility of d dividing the boiler along the axis of symmetry into parts.

The stated technical problem is achieved by the fact that in the known boiler, including a burner, radiation and convection parts, with longitudinally and symmetrically arranged, with transverse distributing and collecting manifolds, frontal with openings for burners and rear with openings for flue gases of the panels of the radiation part, gas ducts of the convective part made of cooled partitions with heat-exchange surfaces located in them:

- transverse distributing and collecting manifolds of the front panel, rear panel of the radiation part, screen surfaces and partitions of the convective part and heat transfer pipes of the enclosing surfaces are connected to longitudinally located upper and lower distributing and collecting manifolds, - the heat transfer pipes of the enclosing surfaces and gas separation walls, are tightly attached on distributing and collecting headers installed partitions and bypass pipes, transversely located distributing and collecting e collectors of each partition and each screen surface are alternately respectively connected to the left longitudinally located distributing and collecting collectors, and the rest to the right. On distributing and collecting collectors, partitions and overflow pipes are installed. The use of pipes with an internal cross-section for the heat-exchanging surfaces ensures the nominal operation of the boiler when significant deposits occur on the pipe internal surfaces. The proposed design is ensured by the implementation of the boiler all-welded construction without the use of refractory materials. In addition, for heat exchanging enclosing and convective surfaces it is possible to use tube blanks of the same standard sizes. Alternating, for example, through one connection of transverse distributing and collecting collectors of each partition and each screen surface to the left distributing and collecting collectors, and the rest to the right, allows

to divide the boiler during repair into two halves with a connector along the axis of symmetry.

In FIG. 1 shows a water tube boiler (longitudinal section)

In FIG. 2 shows a water tube boiler (front view and cross section).

A water tube boiler for layer or chamber combustion of fuel contains a burner 1. radiation 2 and convective 3 parts, distributing 4 and collecting 5, longitudinally and symmetrically located collectors.

The radiation part 2 of the boiler is formed by the front panel 6, in the opening 9 of which the burner device 1 is fixed. On the rear panel 7 of the radiation part 2 to the heat exchange pipes

10 on the bottom for 2/3 of the length of the gas spacers attached

11 with the formation of 1/3 of the length of the heat exchange pipe of the openings 12; .

The convective part of the boiler 3 contains gas flues 13, which are formed by partitions 14. which are similar in structure to the rear panel of the radiation part. In the ducts 13 mounted screen surface 15.

Heat transfer tubes of the front panel 6, rear panel 7,

partitions 14 and screen surfaces 15 are connected to transverse distributing and collecting 17 collectors.

The heat transfer pipes of the enclosing surfaces 8, distributing 16 and collecting 17 transverse collectors are connected to the distributing 4, collecting 5 longitudinally located collectors, respectively.

Transverse distributing 16 and collecting 17 collectors of the partitions 14, the screen surfaces 17 are alternately, for example, connected through one to the left distributing 4 and collecting 5 collectors. The remaining collectors 16 and 17 are connected to the right distributor 4 and collecting 5 collectors, respectively.

Between the heat transfer pipes of the enclosing surfaces 8, gas-tight spacers 18 are fixed along the entire length.

Metal supports 19 are attached to the lower distributing collectors 4 to support the boiler on the foundation.

When the boiler is operating in the water-heating mode, jumpers 20 and overflow pipes 21 are installed in the distributing and collecting headers to maintain the coolant speed in the optimal range.

The operation of the water tube boiler can be described in the following way.

Fuel and air are supplied to the burner device 1. In the radiation part 2, the fuel is burned and the heat is partially transferred to the enclosing heat exchange surfaces 8, the heat transfer tubes of the front 6 and rear panel 7. The resulting gases through the openings 12 enter the convective part 3 of the boiler.

Passing through the flues 13 of the convective part 3, washing the screen surfaces 15, the flue gases, being cooled, are removed from the boiler.

The coolant entering the boiler through the distributing 4.16 collectors is heated in the heat transfer pipes of the enclosing surfaces 8, the front 6 and the back 7 of the panels of the radiation part 2, the screen surfaces 15 and the partitions 14 enter the collecting 5, longitudinally located collectors, and are removed from the boiler.

The proposed boiler is made in several copies, forgiven field tests and is prepared for implementation at a number of facilities of Uralenergotsvetmet JSC.

Claims (3)

1. A water tube boiler, including a burner, radiation and convection parts, with longitudinally and symmetrically located, with transverse distributing and collecting manifolds, frontal with openings for burners and rear with openings for flue gases of the panels of the radiation part, ducts of the convective part made of cooled partitions, with heat exchange surfaces located in them, characterized in that the transverse distributing and collecting manifolds of the front panel, rear panel of the radiation part, screen surfaces and partitions of the convective part, and heat transfer pipes of the enclosing surfaces are connected to longitudinally arranged upper and lower distributing and collecting manifolds, and spacers are tightly attached to the heat transfer pipes of the enclosing surfaces and partitions.  2. The boiler according to claim 1, characterized in that partitions and overflow pipes are installed on the distributing and collecting manifolds. 3. The boiler according to claim 1, characterized in that the transverse distributing and collecting manifolds of each partition and each screen surface are alternately respectively connected to the left longitudinally distributed distributing and collecting manifolds, and the rest to the right.