CN214619517U

CN214619517U - Gas distribution pipe for uniform segmented combustor

Info

Publication number: CN214619517U
Application number: CN202120479760.0U
Authority: CN
Inventors: 杜一鸣; 郑慧敏
Original assignee: Shanghai Hesen Electro Machinery Co ltd
Current assignee: Shanghai Hesen Electro Machinery Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-11-05
Anticipated expiration: 2031-03-05

Abstract

The utility model relates to an even gas-distributing pipe for segmentation combustor, including air inlet group and the gas-distributing pipe body (10) that links to each other with air inlet group, gas-distributing pipe body (10) on be equipped with a plurality of evenly distributed's nozzle (7), air inlet group including main gas air inlet (1) and supplementary gas air inlet (2), nozzle (7) including main gas nozzle (71) and supplementary gas nozzle (72) that the interval set up, main gas air inlet (1) intercommunication main gas nozzle (71), supplementary gas air inlet (2) intercommunication supplementary gas nozzle (72). Compared with the prior art, the utility model discloses can adjust the heat load to the combustor in a flexible way, the cooperation combustor reaches the purpose of homogeneous combustion and low nitrogen emission.

Description

Gas distribution pipe for uniform segmented combustor

Technical Field

The utility model relates to a gas hanging stove technical field, concretely relates to gas-distributing pipe for even segmentation combustor.

Background

The wall-mounted gas boiler is a water heater using natural gas as energy, the wall-mounted gas boiler is mainly used for household heating at present, sanitary hot water is an auxiliary function, the conventional atmospheric wall-mounted boiler mostly adopts single-stage combustion, namely full-row combustion, the load ratio is as high as 1:3, the wall-mounted boiler is widely used in various regions along with the wall-mounted boiler, and the wall-mounted boiler is overheated in summer for supplying the sanitary hot water due to high tap water temperature in local regions, low water pressure and the like, so that the bathing comfort level of a user is reduced. In addition, a sectional combustion technology is adopted in some products on the market, namely, the combustor only uses partial fire rows to work in summer and completely works in winter, and the sectional control of the fuel gas of the wall-mounted fuel gas boiler is an important technology for realizing the sectional combustion of the wall-mounted fuel gas boiler.

In the current wall-hanging stove market, in order to satisfy the hot water high temperature of bathing in summer, the heating keeps the temperature in winter and needs the operation of hanging stove light load. Generally, the sectional combustion is adopted, namely, the gas pipe is divided into 1-3 sections to enable gas to enter each section of the gas pipe, and the burner is combusted in sections by controlling the opening and closing of each section of the gas inlet valve. The biggest disadvantages of this technique are the following:

1. the combustion is uneven, because the heating is small and the working time is long, the combustion section of the combustor burns alone, and only the part of the heat exchanger transfers heat energy, the heat exchanger is heated extremely unevenly, and the brazing strength and the service life of the heat exchanger are seriously influenced;

2. because the heat exchanger is heated unevenly, a temperature gradient is generated at a part without obtaining combustion heat, so that condensed water appears on fins of the heat exchanger, and the heat exchanger and a combustor are corroded;

3. in the part of the burner where no gas enters and no gas burns, a large amount of air is discharged from the flue without participating in the combustion, so that the oxygen content in the flue gas is increased, and the air carries a part of heat, thereby influencing the thermal efficiency and the conversion value of carbon monoxide and nitrogen oxide in the flue gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an even gas-distributing pipe for segmentation combustor can adjust the heat load to the combustor in a flexible way, cooperates the combustor to reach the purpose of even burning and low nitrogen emission.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides an even gas-distributing pipe for segmentation combustor, includes air inlet group and the gas-distributing pipe body that links to each other with air inlet group, the gas-distributing pipe body on be equipped with a plurality of evenly distributed's nozzle, air inlet group including main gas air inlet and supplementary gas air inlet, the nozzle include main gas nozzle and the supplementary gas nozzle that the interval set up, main gas air inlet intercommunication main gas nozzle, supplementary gas air inlet intercommunication supplementary gas nozzle.

Furthermore, the nozzles are arranged in a row in parallel, and an auxiliary gas nozzle is arranged every two main gas nozzles.

This internal main gas of being equipped with of gas-distributing pipe separates the shelves, main gas of assisting separate the shelves and will divide gas pipe body internal partitioning to become main gas distribution chamber and supplementary gas distribution chamber, main gas distribution chamber intercommunication main gas nozzle, supplementary gas distribution chamber intercommunication supplementary gas nozzle, main gas air inlet intercommunication main gas distribution chamber, supplementary gas air inlet intercommunication supplementary gas distribution chamber.

Furthermore, the main gas distribution cavity is directly communicated with the main gas nozzle, and the auxiliary gas distribution cavity is communicated with the auxiliary gas nozzle through an auxiliary gas outlet channel.

Furthermore, the auxiliary gas outlet channels are arranged in the main gas distribution cavity, the number of the auxiliary gas outlet channels is multiple, the auxiliary gas outlet channels are arranged at equal intervals, one end of each auxiliary gas outlet channel is connected with the auxiliary gas distribution cavity, and the other end of each auxiliary gas outlet channel is connected with an auxiliary gas nozzle.

The main gas inlet and the auxiliary gas inlet both adopt a semi-circular tubular structure.

The gas distribution pipe body be the cube structure, main gas air inlet and supplementary gas air inlet parallel and interval set up on same side of gas distribution pipe body, nozzle parallel arrangement on another side of gas distribution pipe body, the opening direction of nozzle perpendicular with the opening direction of main gas air inlet and supplementary gas air inlet.

The outer side of the gas distribution pipe body is provided with a gas distribution pipe cover plate, and a gas distribution pipe sealing gasket is arranged between the gas distribution pipe cover plate and the gas distribution pipe body.

The main fuel gas inlet and the auxiliary fuel gas inlet are in a conical structure at the side close to the gas distributing pipe body; the number of the main gas nozzles is twice that of the auxiliary gas nozzles.

And single-valve electromagnetic valves are arranged on the main gas inlet and the auxiliary gas inlet.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model can flexibly adjust the heat load supplied to the burner by arranging the main gas inlet and the auxiliary gas inlet, improves the uniformity of the gas under different heat load conditions, effectively improves the uniformity of the heating area of the heat exchanger, and avoids the occurrence of condensed water;

2. the utility model adopts the main gas inlet and the auxiliary gas inlet to respectively feed gas, and only two common single-valve electromagnetic valves are needed to realize the function of uniform adjustment, thus saving more cost;

3. the utility model can match with the even sectional burner through the interval arrangement of the main gas nozzle and the auxiliary gas nozzle, so that the burner can burn from the row to the row according to the power requirement in a plurality of rows of fire rows, the burning is more even, and the nitrogen discharge amount is lower;

4. the utility model discloses a main gas is separated into main gas distribution chamber and supplementary gas distribution chamber with gas distribution pipe body internal partitioning by main gas and supplementary gas, make full use of gas distribution pipe body inner space to all adopt half round tubular structure with main gas air inlet, supplementary gas air inlet, main gas distribution chamber and supplementary gas distribution chamber, make overall structure more compact.

Drawings

FIG. 1 is a schematic structural view of the gas distribution pipe for the uniform staged burner of the present invention;

FIG. 2 is a schematic view of the internal structure of the uniform staged burner of the present invention;

FIG. 3 is a schematic cross-sectional view taken along the line C-C in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;

in the figure: 1-main gas inlet, 2-auxiliary gas inlet, 3-main and auxiliary gas partition, 4-auxiliary gas outlet channel, 5-main gas distribution cavity, 6-auxiliary gas distribution cavity, 7-nozzle, 71-main gas nozzle, 72-auxiliary gas nozzle, 8-gas distribution pipe cover plate, 9-gas distribution pipe sealing gasket and 10-gas distribution pipe body.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples.

Example 1

The utility model provides an even gas-distributing pipe for segmentation combustor, as shown in figure 1, set up main gas air inlet 1 and supplementary gas air inlet 2 on subregion pipe body 10 lateral wall including gas-distributing pipe body 10 and interval, parallel arrangement has one row of nozzle 7 on the lateral wall adjacent with main gas air inlet 1 and supplementary gas air inlet 2 place lateral wall, still be equipped with gas-distributing pipe apron 8 in the gas-distributing pipe body 10 outside, be equipped with gas-distributing pipe sealed pad 9 between gas-distributing pipe apron 8 and gas-distributing pipe body 10, be equipped with the single valve lamella solenoid valve on main gas air inlet 1 and the supplementary gas air inlet 2.

As shown in fig. 2-4, be equipped with main gas and auxiliary gas in the middle of the gas distribution pipe body 10 inner chamber and separate shelves 3, this main gas and auxiliary gas separates shelves 3 and separates gas distribution pipe body 10 inner chamber for main gas distribution chamber 5 and auxiliary gas distribution chamber 6, and main gas air inlet 1 and auxiliary gas air inlet 2 are half round tubular structure, and main gas air inlet 1 intercommunication main gas distribution chamber 5, and auxiliary gas air inlet 2 intercommunication auxiliary gas distribution chamber 6. The nozzle 7 comprises a main gas nozzle 71 and an auxiliary gas nozzle 72, the main gas nozzle 71 is directly communicated with the main gas distribution cavity 5, one auxiliary gas nozzle 72 is arranged at every two main gas nozzles 71, the auxiliary gas nozzles 72 are communicated with the auxiliary gas distribution cavity 6 through an auxiliary gas outlet channel 4, and the total number of the main gas nozzles 71 is about twice that of the auxiliary gas nozzles 72.

When main gas air inlet 1 and supplementary gas air inlet 2 are opened simultaneously, the utility model discloses the heat load that the combustor was supplied with to the gas-distributing pipe is the biggest, when closing supplementary gas air inlet 2, the heat load of supplying with the combustor is 2/3 of maximum heat load, when closing main gas air inlet 1, when opening supplementary gas air inlet 2, the heat load of supplying with the combustor is 1/3 of maximum heat load, because big or small heat load is adjusted according to the three-section, the homogeneity of gas under different heat load conditions has been improved, the heated area homogeneity to heat exchanger has obtained effectual improvement, the emergence of comdenstion water has been avoided. This embodiment adopts main gas air inlet 1 and supplementary gas air inlet 2 to admit air respectively, and the user only needs to be equipped with two ordinary single valve lamella solenoid valves and just can realize even regulatory function, practices thrift about 60% of cost than former segmentation mode.

The original segmental combustion gas distributing pipe is characterized in that a partition is added at a certain position in the length direction of the gas distributing pipe, if two partitions are added, and if three partitions are added, two partitions are added. Two air inlets are needed when the air inlets are divided into two sections, and three air inlets are needed when the air inlets are divided into three sections. If the staged combustion is single-body combustion with several local rows of burners. The heat exchange gas is also locally heated under such conditions. This embodiment adopts the interval setting of main gas nozzle and auxiliary fuel nozzle to and with the cooperation of main gas distribution chamber and auxiliary fuel gas distribution chamber, can be from separating row's burning to separating the multirow burning as required power, the burning is more even, avoids temperature gradient's production.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides an even gas-distributing pipe for segmentation combustor, its characterized in that, including air inlet group and the gas-distributing pipe body (10) that links to each other with air inlet group, gas-distributing pipe body (10) on be equipped with a plurality of evenly distributed's nozzle (7), air inlet group including main gas air inlet (1) and supplementary gas air inlet (2), nozzle (7) including main gas nozzle (71) and supplementary gas nozzle (72) that the interval set up, main gas air inlet (1) intercommunication main gas nozzle (71), supplementary gas air inlet (2) intercommunication supplementary gas nozzle (72).

2. The gas distributor according to claim 1, wherein the nozzles (7) are arranged in a row in parallel, and one auxiliary gas nozzle (72) is provided every third main gas nozzle (71).

3. The gas distribution pipe for the uniform segmented burner according to claim 1, wherein a main and auxiliary gas partition (3) is arranged in the gas distribution pipe body (10), the main and auxiliary gas partition (3) divides the interior of the gas distribution pipe body (10) into a main gas distribution cavity (5) and an auxiliary gas distribution cavity (6), the main gas distribution cavity (5) is communicated with a main gas nozzle (71), the auxiliary gas distribution cavity (6) is communicated with an auxiliary gas nozzle (72), the main gas inlet (1) is communicated with the main gas distribution cavity (5), and the auxiliary gas inlet (2) is communicated with the auxiliary gas distribution cavity (6).

4. The gas distribution pipe for the burner of claim 3, wherein the main gas distribution chamber (5) is directly connected to the main gas nozzle (71), and the auxiliary gas distribution chamber (6) is connected to the auxiliary gas nozzle (72) through the auxiliary gas outlet channel (4).

5. The gas distribution pipe for the burner of claim 4, wherein the auxiliary gas outlet channels (4) are arranged in the main gas distribution chamber (5), the number of the auxiliary gas outlet channels is multiple, and the auxiliary gas outlet channels are arranged at equal intervals, one end of each auxiliary gas outlet channel (4) is connected with the auxiliary gas distribution chamber (6), and the other end is connected with an auxiliary gas nozzle (72).

6. The gas distribution pipe for the burner of claim 3, wherein the main gas inlet (1) and the auxiliary gas inlet (2) are semi-circular pipes.

7. The gas distribution pipe for the uniform segmented burner according to claim 1, wherein the gas distribution pipe body (10) is of a cubic structure, the main gas inlet (1) and the auxiliary gas inlet (2) are arranged on the same side face of the gas distribution pipe body (10) in parallel at intervals, the nozzle (7) is arranged on the other side face of the gas distribution pipe body (10) in parallel, and the opening direction of the nozzle (7) is perpendicular to the opening directions of the main gas inlet (1) and the auxiliary gas inlet (2).

8. The gas distribution pipe for the burner of claim 1, wherein a gas distribution pipe cover plate (8) is provided on the outer side of the gas distribution pipe body (10), and a gas distribution pipe sealing gasket (9) is provided between the gas distribution pipe cover plate (8) and the gas distribution pipe body (10).

9. The gas distribution pipe for the burner of the uniform segmentation as claimed in claim 1, characterized in that, the main gas inlet (1) and the auxiliary gas inlet (2) are in a conical structure at the side close to the gas distribution pipe body (10); the number of the main gas nozzles (71) is twice that of the auxiliary gas nozzles (72).

10. The gas distribution pipe for the burner of claim 1, wherein the main gas inlet (1) and the auxiliary gas inlet (2) are provided with single-valve electromagnetic valves.