CN211345299U

CN211345299U - Industrial gas burner with large span-area regulation ratio

Info

Publication number: CN211345299U
Application number: CN201922329957.1U
Authority: CN
Inventors: 肖彬; 王川; 刘鑫
Original assignee: Yueyang Yuanda Heat Energy Equipment Co ltd
Current assignee: Yueyang Yuanda Heat Energy Equipment Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-25
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses an industrial gas burner with large span-area regulation ratio, which comprises a primary combustion system consisting of a primary gas pipe, a primary air pipeline, a primary wind box, a primary gas distribution bag, a primary gas multi-time distributor and a primary combustion chamber, and a secondary combustion system consisting of a secondary gas distribution bag, a secondary gas channel, a secondary air pipeline, a secondary wind box, a secondary gas pipe, a secondary gas multi-time distributor and a secondary combustion chamber; and the flue gas generated by the combustion of the primary combustion system is mixed with the fuel gas and the air of the secondary combustion system and then combusted. The utility model discloses the design has the independent combustion system of two-stage, successively carries out the two-stage burning in the combustor for the burning is more abundant, because adjust through twice combustor, thereby the burning proportion can accomplish to stride the domain greatly and adjust, and guarantees that combustor flame is stable to last, does the result of burning faultless.

Description

Industrial gas burner with large span-area regulation ratio

Technical Field

The utility model relates to a combustion device used on an industrial furnace, in particular to a combustion device used on an industrial furnace with a large combustion regulation ratio.

Background

The burner turndown ratio is the ratio of the maximum fuel quantity to the minimum fuel quantity for a single burner. The turndown ratio of existing utility burners is typically 1: within 5, but the combustion turndown ratio of industrial furnaces of some industries is mostly greater than 1: 5. in order to solve the problem of the adjusting ratio, a plurality of universal burners are generally arranged in the industrial furnace, so that the structure of the industrial furnace is complex, the space of a combustion hearth is enlarged, and the maintenance is inconvenient. It is therefore highly desirable to design a burner with a large turndown ratio.

Disclosure of Invention

The utility model aims at providing a simple structure, have and stride a territory accommodate than 1 greatly: 25, the industrial gas burner can meet the regulation ratio requirement only by installing a single burner, so that the industrial furnace has simple structure and convenient maintenance, and does not need to increase the space of a combustion hearth.

The utility model adopts the technical proposal that: an industrial gas burner with a large cross-domain turndown ratio, characterized in that: the primary combustion system comprises a primary gas pipe, a primary air pipeline, a primary air bellow, a secondary gas distribution bag, a secondary gas channel, a secondary air pipeline, a secondary air bellow, a secondary gas pipe, a primary gas distribution bag, a primary gas multi-distributor, a secondary gas multi-distributor, a primary combustion chamber and a secondary combustion chamber, wherein the primary gas pipe, the primary air pipeline, the primary air bellow, the primary gas distribution bag, the primary gas multi-distributor and the primary combustion chamber form a primary combustion system, and the secondary gas distribution bag, the secondary gas channel, the secondary air pipeline, the secondary air bellow, the secondary gas pipe, the secondary gas multi-distributor and the secondary combustion chamber form a secondary combustion system; and the flue gas generated by the combustion of the primary combustion chamber is mixed with the fuel gas and the air of the secondary combustion chamber and then combusted.

Furthermore, the primary combustion chamber is positioned behind the secondary combustion chamber and is surrounded by the secondary gas multi-time distributor.

The utility model relates to a have the independent combustion system of two-stage, successively carry out the two-stage burning in the combustor, flue gas that one-level combustion system burning produced is burning again in second grade combustion system after with second grade combustion system's gas and air mixing, make the burning more abundant, owing to adjust through twice combustion system, thereby the burning proportion can accomplish to stride the domain greatly and adjust, and guarantee that combustor flame is stable lasting, do the not faulted result of burning, because the flue gas that one-level burning produced burns after mixing second grade combustion system again, the means of burning in proper order, therefore the burning flame temperature reduces, thereby the nitrogen oxide of emission has reduced relatively.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a gas and air flow diagram of the present invention;

in the figure, 1, a primary gas pipe; 2. a primary air duct; 3. a first-stage air box; 4. a secondary gas distribution package; 5. a secondary gas channel; 6. a secondary air duct; 7. a secondary air box; 8. a secondary gas pipe; 9. a first-stage gas distribution package; 10. a primary gas multi-time distributor; 11. a secondary gas multi-distributor; 12. a primary combustion system, 13, a secondary combustion system.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as can be seen from fig. 1, the utility model relates to an industrial gas burner with large span territory turn-down ratio, whole outward appearance is monomer cylinder type, no complicated out-band part, by the one-level gas pipe, one-level air conduit, one-level bellows, second grade gas distribution package, second grade gas passageway, second grade air conduit, second grade bellows, second grade gas pipe, one-level gas distribution package, one-level gas multiple distributor, second grade gas multiple distributor, one-level combustion chamber and second grade combustion chamber constitute, wherein one-level gas pipe, one-level air conduit, one-level bellows, one-level gas distribution package, one-level gas multiple distributor and one-level combustion chamber constitute one-level combustion system, second grade gas distribution package, second grade gas passageway, second grade air conduit, second grade bellows, second grade gas pipe, second grade gas multiple distributor and second grade combustion chamber constitute second grade combustion system; and the flue gas generated by the combustion of the primary combustion system is mixed with the fuel gas and the air of the secondary combustion system and then combusted. The first-stage combustion chamber is positioned behind the second-stage combustion chamber and is surrounded by the second-stage gas multi-time distributor.

The utility model discloses a theory of operation:

as can be seen from FIG. 2, primary air is distributed from the primary windbox 3 into the primary combustion system 12 via the primary air duct 2; the primary fuel enters through the gas pipe 1, is distributed to the primary gas multi-time distributor 10 through the primary gas distribution bag 9, then enters the primary combustion system 12 through the nozzle of the primary gas multi-time distributor 10, and is distributed with the subsequent primary fuel and primary air to finish primary flame combustion in the primary combustion system; the second grade air passes through second grade air duct 6, get into second grade combustion system 13 after the distribution of second grade bellows 7, the second grade fuel gets into second grade gas distribution package 4 through second grade gas pipe 5 and distributes to second grade gas spray tube 8 and gets into second grade combustion system 13 by the spout of second grade gas distributor 11 many times, the second grade air, the flue gas that second grade fuel and one-level burning produced and the fuel that does not burn up carry out 2 mixed combustion in second grade combustion system 13, thereby reach the large-span regulation problem of combustor burning, and guarantee that combustor burning flame is incessant.

The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not the limitations of the concept and scope of the present invention, and the technical solutions of the present invention should fall into the protection scope of the present invention without departing from the design idea of the present invention.

Claims

1. An industrial gas burner with a large cross-domain turndown ratio, characterized in that: the primary combustion system is composed of a primary gas pipe, a primary air pipeline, a primary air bellow, a secondary gas distribution bag, a secondary gas channel, a secondary air pipeline, a secondary air bellow, a secondary gas pipe, a primary gas distribution bag, a primary gas multi-distributor, a secondary gas multi-distributor, a primary combustion system and a secondary combustion system, wherein the primary gas pipe, the primary air pipeline, the primary air bellow, the primary gas distribution bag, the primary gas multi-distributor and the primary combustion chamber form the primary combustion system, and the secondary gas distribution bag, the secondary gas channel, the secondary air pipeline, the secondary air bellow, the secondary gas pipe, the secondary gas multi-distributor and the secondary combustion chamber form the secondary combustion system; and the flue gas generated by the combustion of the primary combustion system is mixed with the fuel gas and the air of the secondary combustion system and then combusted.

2. An industrial gas burner with large cross-domain turndown ratio according to claim 1, characterized in that: the first-stage combustion chamber is positioned behind the second-stage combustion chamber and is surrounded by the second-stage gas multi-time distributor.