CN213119034U

CN213119034U - Combustion type steam generator with double evaporation cavities

Info

Publication number: CN213119034U
Application number: CN202021575178.6U
Authority: CN
Inventors: 李智忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-05-04
Anticipated expiration: 2030-08-03

Abstract

The utility model provides a combustion type steam generator with two evaporation chambeies, including burner, heat preservation casing and the steam generator main part of setting in the heat preservation casing, this steam generator main part includes: a lower evaporation cavity formed in a ring shape; a combustion chamber is formed on the radial inner side of the lower evaporation cavity, and a flue gas channel is formed on the radial outer side of the lower evaporation cavity; the upper evaporation cavity is arranged at the upper part of the lower evaporation cavity at intervals; the upper evaporation cavity is communicated with an external steam discharge pipe extending out of the heat preservation shell; wherein, the top of the lower evaporation cavity is provided with an internal steam discharge pipe which extends upwards to the position above the liquid level of the upper evaporation cavity. The utility model discloses a combustion type steam generator has the advantage that evaporation efficiency is high.

Description

Combustion type steam generator with double evaporation cavities

Technical Field

The utility model relates to the field of steam generators; and more particularly, to a combustion steam generator.

Background

The combustion type steam generator is a mechanical device for heating water into hot water or steam by using the heat energy of fuel combustion, and mainly comprises a fuel gas steam generator, a fuel oil steam generator, a methanol steam generator, a biomass particle steam generator and the like.

The existing combustion type steam generator may have an evaporation chamber (water storage chamber) for generating steam by heating water in the evaporation chamber by heat energy generated by fuel combustion. For example, chinese patent document CN104879735A discloses a full-automatic steam generating device using alcohol-based fuel, which comprises a water tank, a combustion chamber, an alcohol-based burner and a supplementary water tank, wherein the combustion chamber comprises an inner combustion chamber and an outer combustion chamber, the inner combustion chamber is connected with the alcohol-based burner, the outer combustion chamber is connected with the inner combustion chamber and the water tank, the water tank comprises a heat exchange area, a middle temperature area and a steam gathering area, a heat exchange pipe is arranged in the heat exchange area, and the water tank is connected with the supplementary water tank through a connecting pipe.

The combustion type steam generator has the disadvantages that the heat/smoke generated by combustion and the heat exchange area of the water tank are limited, so that the heating efficiency of the water tank is low, and the overall heating and evaporation efficiency is still to be improved although the heat exchange pipe and the smoke are adopted for auxiliary heat exchange.

Disclosure of Invention

The utility model mainly aims at providing a heating and evaporation efficiency is high and simple structure's combustion type steam generator.

In order to achieve the main purpose, the utility model provides a combustion type steam generator with double evaporation cavities, which comprises a combustion device, a heat preservation shell and a steam generator main body arranged in the heat preservation shell; the steam generator main body includes:

a lower evaporation cavity formed in a ring shape; a combustion chamber is formed on the radial inner side of the lower evaporation cavity, and a flue gas channel is formed on the radial outer side of the lower evaporation cavity;

the upper evaporation cavity is arranged at the upper part of the lower evaporation cavity at intervals; the upper evaporation cavity is communicated with an external steam discharge pipe extending out of the heat-insulating shell;

wherein the top of the lower evaporation chamber has one or more internal vapor exhaust pipes extending upward above the liquid level of the upper evaporation chamber.

Among the above-mentioned technical scheme, the radial inboard in lower evaporation chamber forms the combustion chamber, and the radial outside forms flue gas passageway, goes up the upper portion that evaporation chamber interval set up in lower evaporation chamber. So set up for the heat/flue gas that the burning produced can heat upper and lower evaporation chamber simultaneously, has increased the area of heating of burning heat/flue gas to the evaporation chamber, especially can heat the nearly whole surface in evaporation chamber down, is showing the heating and the evaporation efficiency that have improved steam generator, and has simple structure's advantage.

According to the utility model discloses a concrete embodiment, be provided with the infrared radiation metal mesh in the combustion chamber. Wherein, the infrared radiation metal mesh can be iron chromium aluminum alloy net or nickel chromium aluminum alloy net, the infrared radiation metal mesh panel is established burner top, with the radial internal perisporium contact or the interval setting in evaporation chamber down.

Among the above-mentioned technical scheme, the infrared radiation metal mesh who sets up in the combustion chamber forms a high temperature infrared radiation district in the combustion chamber after being heated, utilizes infrared radiation characteristic to improve combustion temperature, makes the temperature of upper and lower evaporation chamber promote by a wide margin and reduce steam and discharge away, further improves heating and evaporation efficiency.

Preferably, the infrared radiation metal net extends upwards to exceed the top wall of the lower evaporation cavity, so that the upper evaporation cavity can be heated in a radiation mode better.

According to a specific embodiment of the present invention, the bottom periphery of the upper evaporation cavity is formed with a downwardly recessed annular groove. Preferably, the annular groove at least partially overlaps the lower evaporation chamber, viewed in the horizontal direction. So set up, can further increase the heating area of evaporating chamber.

According to the utility model discloses a concrete implementation mode, go up the evaporation chamber with connect through the hydrologic cycle pipeline between the evaporation chamber down.

Further, a water level controller is connected to the water circulation pipeline.

According to the utility model discloses a concrete implementation mode, the top of going up the evaporation intracavity is provided with the water-stop sheet, the top setting of inside steam discharge pipe is in the profile scope of water-stop sheet.

According to the utility model discloses a concrete embodiment, burner is alcohol group gasification furnace end.

It should be noted that, for the sake of clarity and illustration of the structures to be expressed, the various parts in the drawings may not be drawn to the same scale, and therefore, unless otherwise specified, the representations in the drawings are not intended to limit the size and the proportional relationship of the various parts in the steam generator.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of a combustion steam generator according to the present invention;

fig. 2 is a sectional view a-a of the steam generator body of fig. 1.

Detailed Description

Referring to fig. 1 and 2, a combustion type steam generator according to a preferred embodiment of the present invention includes a combustion device 1, a heat-insulating case 2, and a steam generator main body 3 disposed in the heat-insulating case 2, wherein the steam generator main body 3 includes an upper evaporation chamber 31 and a lower evaporation chamber 32.

The lower evaporation cavity 32 is formed into a ring shape, a combustion chamber 33 is formed on the radial inner side of the lower evaporation cavity, a flue gas channel 34 is formed on the radial outer side of the lower evaporation cavity, and the flue gas channel 34 is communicated with a smoke exhaust pipe 6 extending out of the heat preservation shell 2; the upper evaporation cavity 31 is arranged at the upper part of the lower evaporation cavity 32 at intervals, and a gap for the circulation of smoke is arranged between the upper evaporation cavity 31 and the lower evaporation cavity 32. So set up for the heat/flue gas that the burning produced can heat last evaporation chamber 31 and lower evaporation chamber 32 simultaneously, has increased the heat of burning/flue gas and to the heating area in evaporation chamber, especially can heat the nearly whole surface in evaporation chamber 32 down, is showing the heating and the evaporation efficiency who has improved steam generator.

In order to increase the heating area of the upper evaporation cavity 31, a downward-recessed annular groove 311 is formed on the periphery of the bottom of the upper evaporation cavity 31; it will be readily appreciated that the more the annular recess 311 is recessed downwardly, the greater the heated area of the lower evaporation chamber 32. Preferably, as shown in fig. 1, the annular groove 311 at least partially overlaps the lower evaporation chamber 32 when viewed in a horizontal direction.

The upper evaporation cavity 31 and the lower evaporation cavity 32 are connected through a water circulation pipeline 35, the water circulation pipeline 35 is connected with a water level controller 7, and the water level controller 7 is also communicated with a steam area (an indoor space above the water surface) in the upper evaporation cavity 31. Thus, the upper evaporation cavity 31 and the lower evaporation cavity 32 always have the same water level height, and the water level controller 7 can control the water level and automatically replenish water for the upper evaporation cavity and the lower evaporation cavity.

The top of the lower evaporation chamber 32 has one or more internal vapor exhaust pipes 321, for example fig. 2 shows that the top of the lower evaporation chamber 32 has 6 internal vapor exhaust pipes 321 distributed in a circular array. The internal vapor exhaust pipe 321 extends upwardly above the liquid level of the upper evaporation chamber 31; preferably, a water baffle plate 8 is arranged at the top part in the upper evaporation cavity 31, and the top end of the inner steam discharge pipe 321 is arranged in the outline range of the water baffle plate 8. That is, the water blocking plate 8 covers the top end of the inner steam discharge pipe 321 as viewed from above. The upper evaporation chamber 31 communicates with one or more external steam discharge pipes 4 extending out of the insulated casing 2, the steam inlet of the external steam discharge pipe 4 being arranged above the water-stop sheet 8.

The infrared radiation metal net 5 is arranged in the combustion chamber 33, and the infrared radiation metal net 5 can be an iron-chromium-aluminum alloy net or a nickel-chromium-aluminum alloy net, for example. Preferably, the infrared radiation metal mesh 5 is formed in a cylindrical shape having an open lower end and is disposed over the combustion apparatus 1. The infrared radiating expanded metal 5 may be disposed in contact with or spaced apart from the radially inner peripheral wall 322 of the lower evaporation chamber 32, for example, in this embodiment, the infrared radiating expanded metal 5 is disposed spaced apart from the radially inner peripheral wall 322. The infrared radiating wire netting 5 may be provided only in the combustion chamber 33 or may extend further up to beyond the top wall of the lower evaporation chamber 32.

The utility model discloses a steam generator preferably adopts alcohol group fuel (for example methyl alcohol), and burner 1 is preferably alcohol group gasification furnace end. The alcohol-based fuel is combusted in the combustion chamber 33, the infrared radiation metal mesh 5 is heated to form a high-temperature infrared radiation area in the combustion chamber 33, and the combustion temperature is improved by utilizing the infrared radiation characteristic, so that the temperatures of the upper evaporation cavity 31 and the lower evaporation cavity 32 are greatly improved, and the hot gas discharge is reduced.

Although the present invention has been described above by way of preferred embodiments, it is to be understood that the above embodiments are merely illustrative of the possible embodiments of the present invention and should not be construed as limiting the scope of the present invention, which is intended to be covered by the appended claims in any way by equivalent permutations or variations that may be made by those skilled in the art in accordance with the present invention.

Claims

1. A combustion type steam generator with double evaporation cavities comprises a combustion device, a heat-preservation shell and a steam generator main body arranged in the heat-preservation shell; characterized in that the steam generator body comprises:

2. The fired steam generator with dual vaporization chambers of claim 1, wherein: an infrared radiation metal net is arranged in the combustion chamber.

3. The fired steam generator with dual vaporization chambers of claim 2, wherein: the infrared radiation metal net is an iron-chromium-aluminum alloy net or a nickel-chromium-aluminum alloy net; the infrared radiation metal net is covered above the combustion device and is in contact with or arranged at intervals on the radial inner peripheral wall of the lower evaporation cavity.

4. The fired steam generator with dual vaporization chambers of claim 2, wherein: the infrared radiating metal mesh extends upward beyond the top wall of the lower evaporation chamber.

5. The fired steam generator with dual vaporization chambers of claim 1, wherein: and a downward sunken annular groove is formed on the periphery of the bottom of the upper evaporation cavity.

6. The fired steam generator with dual vaporization chambers of claim 5, wherein: viewed in the horizontal direction, the annular groove at least partially overlaps the lower evaporation chamber.

7. The fired steam generator with dual vaporization chambers of claim 1, wherein: the upper evaporation cavity is connected with the lower evaporation cavity through a water circulation pipeline.

8. The fired steam generator with dual vaporization chambers of claim 7, wherein: and the water circulation pipeline is connected with a water level controller.

9. The fired steam generator with dual vaporization chambers of claim 1, wherein: the top in going up the evaporation chamber is provided with the water-stop sheet, the top of inside steam discharge pipe sets up in the profile scope of water-stop sheet.

10. The fired steam generator with dual vaporization chambers of claim 1, wherein: the combustion device is an alcohol-based gasification furnace head.