RU2517959C1 - Self-contained demontable water heating steel boiler "severny" (scdwhsb) - Google Patents

Abstract

FIELD: energy industry.

SUBSTANCE: self-contained demontable water heating steel boiler is a set of hermetic weldments independent in the manufacture: furnace grate of the cooled structure and steel hollow panels. The said panels form the furnace volume at the four sides of the furnace grate. Three horizontal panels located above the furnace form a gas flue channel. The upper panel closes the gas flue from above and serves as a collector in circulation of the coolant. The whole structure of the boiler is connected by bolts. The cavities are connected by the circulation pipelines.

EFFECT: simplification of the process of manufacture, transportation, installation and maintenance of the boiler, reduction of costs in comparison with all-welded nondemountable, cast-iron and steel sectional prefabricated analogues.

5 dwg

Description

This boiler belongs to devices for burning solid, and when equipped with burners - gaseous or liquid fuels, it is designed to heat the coolant to 115 ° C with autonomous heating and hot water supply of industrial and residential premises with a heating system pressure of up to 6 kg / cm ² . Objective: increasing the completeness of fuel combustion, increasing the efficiency and thermal power of the boiler while minimizing its metal consumption, ease of transportation, installation and maintenance.

This invention was developed on the basis of the CROC invention - the Grate of the Cooled Design (PATENT for invention No. 2382944, author Koltsov Yu.V., Republic of Tyva, Kaa-Khem district, saryg-sep, Pushkin St., 177).

A well-known boiler with a furnace equipped with a Cooled Corner Grill "ESD" with a fuel combustion zone located directly on the surface of this grill, with radial cross-section by tube heat exchangers installed with the possibility of interaction of gaseous products of combustion with their heating surfaces (Hot-water boiler "KVS", PRODUCTION ENTERPRISE LLC NOVETECH, 656008. Altai Territory, Barnaul, Partizanskaya 266).

An analogue with respect to the GRAW LATTICE OF THE COOLED DESIGN is the COOLED CORNER LATTICE (ESD).

Signs of “ESD”: Radial sections of the pipe are parallel to each other at a distance, welded into the manifolds, corners are welded along the entire length into the annulus, which have openings for supplying air to the combustion zone of solid fuel, while the coolant circulates in the pipes of the radial section and the cavity "ESD" communicates with the cavity of the "water jacket" of the boiler. The disadvantage of the KVS boiler is (ESD) Cooled Corner Grille - the corners are not cooled and, due to high temperature stresses, come off at the weld points from the cooled walls of the radial pipes (as a result of leakage in the places of separation), the ash does not pour into the ash pan of the boiler due to small openings in the body of the corner is about 6-8 mm, the bulkiness, the non-separable design of the boiler does not allow it to be transported and installed without rigging. For normal operation of the boiler as a whole, forced ventilation of the area of the Cooled Corner Lattice and a package of heat exchangers is necessary.

A number of boilers are also known, which are assembled from cast-iron sections and have names: KCH-1; "Universal - 6"; "Universal-6M"; Tula-3, etc. Cast iron boilers, regardless of their brand, are assembled from separate sections, have a furnace in the lower part of the boiler, equipped with cast iron grates, and are a tent-type structure, which is bricked outside with brickwork. The disadvantage of these boilers is the bulkiness, complexity of assembly and special operating conditions, as Cast iron, unlike steel, is a brittle metal and is afraid of sudden temperature changes. The main characteristic of these boilers is the heating surface. This is the surface of the pipes of the boiler sections, which are heated on the one hand by the products of fuel combustion (torch flame), and on the other hand, cooled by the heat carrier (water).

Known and common hot-water steel sectional boilers NR-18, NIISTU-5, assembled by welding from pipe sections of various shapes. The metal part of the boiler, which also includes the front and rear sections, is installed on the inner walls of the foundation of refractory bricks. For better use of the heating surface, the lining is refractory, and the outside is clad in red brick around the boiler.

Steel Boiler Self-contained Collapsible Type Squart “SQUART” - new in the field of heat engineering, as The main difference from analogues is the totality of independent in the manufacture of sealed hollow welded products. The entire boiler design is made of hollow panels welded from rolled steel with a thickness of 4 mm with double walls, which are assembled by connecting bolts and circulation pipes into a single design of a boiler with a firebox equipped with a Grate of Cooling Structure, which is welded from steel pipes of rectangular cross-section, laid parallel to each other at a distance welded from one end into the incoming collector, from the other into the output collector. Between steel pipes of rectangular cross-section at a distance from each other are welded segments of the steel bar, which are compensators, which together with the plane of pipes of rectangular cross-section form a working surface. The distances between the sections of the steel bar form holes through which air is supplied to the combustion zone of solid fuel and ash is poured into the ash pan of the boiler. All cavities of the grate and panels are connected via pipelines into a single system for circulating the coolant as a whole in the boiler. Note: when the boiler is equipped with burners for burning liquid or gaseous fuel, the burners themselves are installed for blasting in the cavity of the ash pan of the boiler, as the red-hot torch at the same time washes the lower part of the Grate of the Cooled Design and further up the flue.

Two side, frontal, rear walls - panels are arranged in such a way that they form a furnace space on four sides of the Grate of the Cooled Construction, and three horizontally located above the furnace panels between vertical walls - the duct, while the top one closes the duct from above and carries collector function during the circulation of the coolant in the boiler.

The front and rear panels have enough openings for loading fuel into the boiler, cleaning the horizontal planes of the gas duct and the exit of the combustion products of the fuel into the chimney.

The heating medium’s heating efficiency depends on the mass of incandescent solid fuel loaded into the furnace, and the boiler power depends on the area of the entire grate of the cooled structure.

The final technical result - the collapsible design of the boiler allows to simplify the manufacturing process, transportation, installation and maintenance, costs are reduced in comparison with all-welded, non-separable, cast-iron and steel sectional prefabricated counterparts. EFFECTIVE heating of the heat carrier without active mixing of the burning mass of fuel occurs due to the Grate of the Cooled Design, which performs the functions of a grate and a heat exchanger at the same time, i.e. the mass of fuel heated to 1000 ° C lies directly on the surface of CROC.

During operation of the boiler, soot emissions are significantly reduced, efficiency is increased, fuel consumption is reduced, which affects the environment, emissions of unburned products are reduced to the atmosphere, and the range of fuel used is expanded from traditional coal of all grades, firewood, when equipped with burners, natural gas or fuel oil, to non-traditional - peat, woodworking waste and all kinds of combustible waste. A zigzag horizontal flue allows maximum heat transfer of the coolant with the products of fuel combustion, while soot and tar deposits are practically absent, which simplifies boiler maintenance during its operation.

A comparison of the features of the claimed solution with the features of the prototype and analogues testifies to its criterion of "novelty."

Attributes: Steel Boiler Self-contained Collapsible Type - a set of independent hollow steel panels made of rolled steel with the Grate of the Cooled Structure, which are assembled into a single boiler structure with connecting bolts, and circulation pipelines connecting the cavities of the steel panels and the grate of the cooled structure in a unified system of circulation of the coolant in the boiler as a whole.

The claimed device operates as follows.

Cooled coolant entering through the inlet pipe (pos. 5) located in the inlet manifold (pos. 4) of the grate of the cooling structure is distributed in the cavity of the grate of the cooling structure and in parallel through pipelines (pos. 14) in the cavity (pos. 13) panels.

When burning fuel (furnace pos. 26), the combustion chamber heats up, the entire area of the grate of the structure to be cooled, the walls of the zigzag duct. At the same time, there is intensive heat exchange with the coolant circulating in the cavity of the grate and boiler water jacket, the density of the coolant decreases, and it moves upward in the cavity of the panels (pos. 13) relative to the gravity of the earth through circulation pipelines (pos. 16) connected to the top cover of the boiler (pos. 10), which carries the function of the collector, then the heated coolant through the outlet pipe (pos. 6) connected to the heating system moves to the convectors of the room where it is cooled, the density decreases, and the coolant moves goes to the boiler inlet pipe (pos. 5), the cycle repeats.

Sufficient simplicity and low metal consumption with high efficiency make this boiler the most popular for use - there is no need for special rigging and bricking. In fact, it can be mounted in basements with narrow aisles. Simplicity and quality in manufacturing, as each product, independent in the manufacture, passes the test procedure for strength and tightness separately, which guarantees high quality of the entire boiler structure during assembly as a whole.

DESCRIPTION OF THE POSITIONS OF THE DRAWINGS:

1. The left panel is the boiler wall.

2. The right panel is the wall of the boiler.

3. Grate of the CROC Cooled Design.

4. Incoming collector of the grate of the cooled structure.

5. The inlet pipe of the boiler, connected to the return pipe of the heating system, welded into the inlet manifold of the grate of the cooling structure.

6. The outlet pipe of the boiler, connected to the supply pipe of the heating system.

7. A panel located above the boiler furnace space, forming a gas duct in the horizontal direction towards the frontal part.

8. A panel located parallel to the bottom and forming the duct of the duct on the opposite side of the frontal.

10. The upper horizontal panel, which acts as a collector during the circulation of the coolant in the boiler structure.

11. Exit from the flue (attached directly to the chimney made of brick, or steel pipe).

12. Doors for cleaning the flue.

13. Cavity "Water shirt" of the boiler, arrows indicate the movement of the coolant in the cavity.

14. The circulation pipe.

15. Technological hole for connecting the circulation pipe.

16. Arrows - the direction of circulation of the coolant (pipelines are not indicated).

17. The slope of the installation of "CROC" in the furnace, which determines the natural movement of the coolant when it is heated.

18. Bracket.

19. Connecting bolt M 12.

20. The loading door of the boiler.

21. The movement of incandescent products of combustion of fuel in a cooled flue of a zigzag configuration.

22. Ashman.

23. Mineral (refractory) wool, gasket between the panels.

24. The frontal panel.

25. Firebox.

26. The flue.

27. The rear wall of the boiler, the middle panel of the flue.

28. The rear wall of the boiler, the lower panel of the flue, located above the firebox.

29. The rear wall of the boiler, the output collector of the grate of the cooling structure.

30. Doors of an ashpit.

Power elements of welded structures working against excessive pressure of the coolant are not indicated.

Nominal working pressure of the heat carrier in the boiler is 0.6 MPa (6 kg / s ² ), test pressure of the boiler is 0.8 MPa (8 kg / s ² ).

Hot water boiler:

figure 1 is a view from the front,

figure 2 is a side view,

figure 3 - cross section of the boiler, indicated in figure 1 as (aa),

figure 4 - cross section of the boiler, indicated in figure 2 as (B-B),

5 is a view from the rear.

Claims (1)

The steel boiler is a self-contained collapsible type for heating the coolant, characterized in that it is a set of independent in the manufacture of hollow inside sealed welded products: a grate of a cooled structure that performs the functions of a grate and heat exchanger at the same time, consisting of steel pipes of rectangular cross-section, laid parallel to the distance from each other, welded from one end to the inlet manifold, from the other to the outlet, with welded into the annulus The lengths of the steel bar are compensators forming a working surface with the plane of rectangular pipes, while the distances between the compensators form holes for supplying air to the fuel combustion zone and ash discharge into the boiler ash pan, with steel hollow panels arranged in such a way that they form a furnace space of two side, frontal and rear walls on four sides of the grate of the cooling structure, and three horizontal panels located above the firebox form a duct, the upper one is closed It creates a flue from above and acts as a collector during the circulation of the coolant; in this case, the entire boiler structure is connected by bolts, the cavities by circulation pipelines, and the front and rear panels have sufficient openings for loading fuel, cleaning the horizontal planes of the flue, and leaving the products of fuel combustion into the chimney.

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