CN220017353U

CN220017353U - Burner and combustion device using same

Info

Publication number: CN220017353U
Application number: CN202123162915.7U
Authority: CN
Inventors: 孙坤磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-30
Filing date: 2021-12-16
Publication date: 2023-11-14
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a burner and a combustion device applied to the burner, which comprises a body, wherein the surface of the body is provided with a flame outlet, a combustion-supporting gas inlet interface and a gas inlet interface, an inner cavity main body is arranged in the body, the inner cavity main body comprises a combustion chamber, an air-fuel flow guide cavity and a gas inlet channel, the combustion chamber is communicated with the flame outlet, the gas inlet channel is communicated with the gas inlet interface, the air-fuel flow guide cavity and the gas inlet channel are both communicated with the combustion chamber, the combustion-supporting gas inlet interface is communicated with the air-fuel flow guide cavity, the gas inlet channel comprises a first-stage gas channel and a plurality of second-stage gas channels which are annularly arranged on the periphery of the first-stage gas channel, and the second-stage gas channels are communicated through an annular channel which is sleeved on the periphery of the first-stage gas channel. The utility model provides a nozzle, it is equipped with the gas passageway of a plurality of flow levels respectively, and it adopts minimum flow to ignite, and the supply of gradual promotion gas again can avoid the emergence of difficult ignition or ignition deflagration condition effectively.

Description

Burner and combustion device using same

Technical Field

The utility model relates to the technical field of burners, in particular to a burner and a combustion device applied to the burner.

Background

In the Chinese patent of the utility model with the publication number of CN1062877241A, a low-NOx flat flame high-temperature resistant heat exchange burner is disclosed in the technology of staged combustion, and the primary air duct and the secondary air rotational flow multi-channel are arranged in the air-fuel mixing chamber, so that the high-temperature heat exchange air is fed to the combustion chamber and the flat flame combustion chamber in a staged manner, partial air and fuel gas are mixed in the combustion chamber to form low-oxygen combustion, the flame temperature of the fuel in the initial stage of combustion can be effectively reduced, the formation of nitrogen oxides is inhibited, and the emission of NOx is greatly reduced. Because the heat exchanger is utilized, the heat energy of high-temperature smoke exhaust is heated to heat combustion-supporting air, and secondary waste heat recovery is realized, so that the fuel gas consumption is reduced, and more energy conservation and emission reduction are realized. However, in the above-described scheme, only one gas pipe is provided to the combustion chamber, and the gas pipe is easily difficult to ignite and detonate by ignition due to the setting of the maximum flow rate of the gas pipe, and the maximum combustion effect of the burner is affected if the size of the gas pipe is directly reduced.

Disclosure of Invention

Aiming at the problems, the utility model provides a burner which is respectively provided with a plurality of fuel gas channels with flow levels, adopts minimum flow to ignite, gradually increases the supply quantity of fuel gas, and can effectively avoid the conditions of difficult ignition or ignition and deflagration. Compared with the scheme, the utility model can directly reduce the size of the gas pipe under the condition of not influencing the maximum combustion effect of the burner, or can improve the maximum combustion effect of the burner under the condition of not changing the gas pipe. The technical scheme adopted by the utility model is as follows: the utility model provides a nozzle, including the body, the body surface is equipped with a flame gas outlet, a combustion-supporting gas inlet and a plurality of gas inlet, the inside inner chamber main part that is equipped with of body, the inner chamber main part includes the combustion chamber, air-fuel guide body chamber and gas inlet channel, combustion chamber and flame gas outlet intercommunication, gas inlet channel and gas inlet interface intercommunication, air-fuel guide body chamber, gas inlet channel all communicate with each other with the combustion chamber, combustion-supporting gas inlet and air-fuel guide body chamber intercommunication, gas inlet channel includes a first-stage gas passageway and a plurality of annular setting at the second-stage gas passageway of first-stage gas passageway periphery, through the annular channel switch-on of one set of establishing at the first-stage gas passageway periphery between the second-stage gas passageway. Preferably, the gas turbine further comprises a plurality of tertiary gas channels, and the tertiary gas channels are communicated with the annular channel. Preferably, the air intake sectional area of the tertiary combustion channel is larger than the air intake sectional area of the secondary gas channel.

Preferably, the surface of the body is also provided with a UV detection port for detecting the temperature in the combustion chamber.

A combustion device comprises a heat storage body, wherein a flame outlet on the body is communicated with the inside of the heat storage body. Preferably, the heat storage device further comprises a heat storage device, a heat exchange cavity is arranged in the heat storage device, an exhaust gas outlet communicated with the heat exchange cavity is arranged on the inner wall of the heat storage body, a heat exchange pipe communicated with a combustion-supporting gas conduit is arranged in the heat exchange cavity, and the combustion-supporting gas conduit is communicated with a combustion-supporting gas inlet interface on the body. Preferably, the heat exchange cavity comprises a first heat exchange cavity and a second heat exchange cavity, the first heat exchange cavity wraps the second heat exchange cavity and is communicated with the second heat exchange cavity through a connecting hole, and the second heat exchange cavity is communicated with the heat storage body through an exhaust gas outlet.

Compared with the prior art, the utility model has the following advantages: 1. the utility model can not reduce the size of the gas pipe under the condition of not influencing the maximum combustion effect of the burner, or can improve the maximum combustion effect of the burner under the condition of not changing the gas pipe. 2. Because the utility model adopts the heat exchange combustion-supporting air with ultra-high temperature (more than 700 ℃), the flame spraying area is positioned in the high-temperature resistant combustion chamber, and if the flame spraying area is applied to a common burner, the burner material is quickly oxidized and damaged. 3. Because the common burner is used for conveying the fuel gas pipeline and is made of steel, the fuel gas pipeline and the high-temperature combustion-supporting air pipeline are both arranged in a cavity and are influenced by the high temperature of the high-temperature combustion-supporting air, when the fuel gas is conveyed, the fuel gas is not in an air-fuel mixing chamber, black smoke is formed in the pipe due to high-temperature oxygen deficiency, the combustion is insufficient, the emission exceeds the standard, and the energy is not saved. The whole material of the burner is formed by casting refractory materials at one time, and the main structure of the inner cavity in fig. 2 can be regarded as a cast inner film structure. The fuel gas channel and the combustion-supporting air channel are separately supplied in a divided mode and sent to the mixing chamber to be mixed with high-temperature air for combustion, and the combustion is complete, so that the concentration of NOx generated in the combustion process is obviously reduced. The utility model can provide various gas supply schemes and also can combine various schemes to form a new supply scheme by arranging the primary gas channel, the secondary gas channel and the tertiary gas channel. 4. The utility model provides a combustion device, which comprises a heat storage chamber for recovering hot waste gas and conveying the hot waste gas into a heat exchange cavity in the heat storage device, wherein the hot waste gas and combustion-supporting gas in a heat exchange pipe are subjected to heat exchange treatment. In the heat exchange tube, the temperature of the combustion-supporting gas rises to 800 ℃ or above, and the combustion-supporting gas is discharged into the combustion-supporting gas guide tube. The temperature of the waste gas is reduced after heat exchange, and the waste gas is finally discharged into the atmosphere at the temperature of about 150 ℃ under the action of an induced draft fan after the waste gas is treated.

Drawings

FIG. 1 is a schematic perspective view of a burner in example 1;

FIG. 2 is a schematic perspective view of the inner mold of embodiment 1 when the cavity body is cast;

FIG. 3 is a schematic perspective view of the inner mold of embodiment 2 when the inner mold is cast;

fig. 4 to 6 are schematic perspective views showing the structure of the combustion apparatus in example 4.

The reference numerals in the figures illustrate: 1. A body; 11. a flame outlet; 12. a fuel gas inlet port; 13. a gas inlet port; 14. a UV detection port; 2. an inner cavity body; 3. a combustion chamber; 4. an air-fuel flow-guiding body cavity; 5. a gas inlet passage; 51. a primary gas channel; 52. a secondary gas passage; 53. an annular channel; 54. a third stage gas channel; 6. a combustion-supporting gas conduit; 7. a gas conduit; 8. a gas burning torch; 81. an electrode joint; 82. an ignition electrode; 9. a heat storage device; 91. a first heat exchange chamber; 92. a heat exchange tube; 93. a fan-shaped channel; 94. a second heat exchange chamber; 95. a connection hole; 10. a heat storage body; 101. and an exhaust gas outlet.

Description of the embodiments

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1, the embodiment discloses a burner, which comprises a body 1, wherein a flame outlet 11, a combustion-supporting gas inlet interface 12 for communicating with a combustion-supporting gas conduit 6 and a plurality of gas inlet interfaces 13 for communicating with a gas conduit 7 are arranged on the surface of the body 1. The inner cavity body 2 is arranged in the body 1, the inner cavity body 2 comprises a combustion chamber 3, an air-fuel flow guiding cavity 4 and a fuel gas inlet channel 5, the combustion chamber 3 is communicated with a flame outlet 11, the fuel gas inlet channel 5 is communicated with a fuel gas inlet interface 13, the air-fuel flow guiding cavity 4 and the fuel gas inlet channel 5 are both communicated with the combustion chamber 3, and a combustion-supporting gas inlet interface 12 is communicated with the air-fuel flow guiding cavity 4. As shown in fig. 2, the gas inlet passage 5 includes a primary gas passage 51, an annular passage 53, and a plurality of secondary gas passages 52, the primary gas passage 51 being a straight tubular passage, the plurality of secondary gas passages 52 being annularly disposed at the outer periphery of the primary gas passage 51. The interface of the air-fuel diversion cavity 4 and the first-stage gas channel 51 is positioned at the center of the interfaces of the plurality of second-stage gas channels 52 and the air-fuel diversion cavity 4. The annular passage 53 is provided around the outer periphery of the primary gas passage 51, and communicates the secondary gas passages 52 with each other. In the present embodiment, the number of the gas inlet ports 13 is the sum of the number of the primary gas passages 51 and the number of the secondary gas passages 52. The number of secondary gas passages 52 in this embodiment is twelve, and six or sixteen secondary gas passages 52 may be substituted. Referring again to fig. 1, the gas inlet 13 communicates with a primary gas passage 51 and a secondary gas passage 52, respectively. The gas conduit 7 connected with the gas inlet end of the primary gas channel 51 is a three-way pipe, one end of the gas conduit 7 is communicated with the gas inlet interface 13, one end of the gas conduit is externally connected with a gas tank or a gas pipe, the rest end is provided with a gas igniting gun 8 to extend into the primary gas channel 51, one end of the gas igniting gun 8 extending into the primary gas channel is provided with an igniting electrode 82, the position of the igniting electrode 82 is spaced from the gas outlet of the primary gas channel 51, and the other end of the gas igniting gun 8 is provided with an electrode joint 81 exposed outside for electric connection of the gas igniting gun 8. The surface of the body 1 is also provided with a UV detection port 14, and the UV detection port 14 is communicated with the combustion chamber 3 and is used for detecting the temperature in the combustion chamber 3. In this embodiment, the combustion chamber 3 is made of a high temperature resistant material, including, but not limited to, a high temperature resistant ceramic.

Example 2

The present embodiment is different from embodiment 1 in that the gas intake passage 5 further includes a plurality of tertiary gas passages 54, the tertiary gas passages 54 being in communication with the annular passage 53, and the number of the gas intake ports 13 corresponding to the sum of the numbers of the primary gas passages 51, the secondary gas passages 52, and the tertiary gas passages 54. The sum of the cross-sectional areas of the inlets of the four tertiary gas channels 54 is greater than the sum of the cross-sectional areas of the inlets of the secondary gas channels 52. In this embodiment, the number of three stage gas passages 54 is four, and three, five or six stage gas passages may be substituted. Correspondingly, the number of gas inlet ports 13 communicating with the gas conduit 7 changes.

Example 3

Referring to fig. 4 to 6, this embodiment discloses a combustion device, which uses any burner of embodiment 1 or embodiment 2, wherein a space for storing waste gas is provided in the heat storage body 10, and one end of the body 1 provided with a flame outlet 11 extends into the heat storage body 10.

Example 4

In this embodiment, on the basis of embodiment 3, an exhaust gas outlet 101 is further provided on the inner wall of the heat storage body 10, a heat storage device 9 is additionally provided on the heat storage body 10, the heat storage device 9 has a fan-shaped structure, and a heat exchange cavity is provided therein, and includes three spaces separated by a partition plate, namely, a first heat exchange cavity 91 and a second heat exchange cavity 94, and a fan-shaped channel 93 located between the first heat exchange cavity 91 and the second heat exchange cavity 94. The first heat exchange cavity 91 covers the periphery of the second heat exchange cavity 94, and a connecting hole 95 is formed in the partition plate to communicate the first heat exchange cavity 91 with the second heat exchange cavity 94. The first heat exchange chamber 91 is provided with an interface communicating with an external exhaust gas discharge conduit, and the second heat exchange chamber 94 communicates with an exhaust gas outlet 101 on the heat storage body 10. The heat exchange tube 92 is installed in the heat exchange cavity, and the heat exchange tube 92 is arranged in the first heat exchange cavity 91 and is fixed through a partition plate. One end of the heat exchange tube 92 is communicated with the combustion air conduit 6, and the other end is communicated with an external combustion air tank or a combustion air pipe. The fan-shaped channel 93 is provided with a plurality of spaces which are separated from each other, the heat exchange tubes 92 are divided into a plurality of groups which are sequentially connected in series, and two ends of each group of heat exchange tubes 92 are respectively communicated with two adjacent spaces in the fan-shaped channel 93, so that the heat exchange tubes 92 are connected in series.

The working principle is as follows: the waste gas generated by the burner enters the heat storage body 10 for storage, a part of high-temperature hot gas flows through the first heat exchange cavity 91, the combustion-supporting gas in the heat exchange pipe 92 is preheated to 800-1100 ℃, and the hot combustion-supporting gas flow enters the air-fuel flow guide cavity 4 through the combustion-supporting gas guide pipe 6 and is mixed with fuel gas for combustion. The foregoing description of the preferred embodiments of the present utility model is provided for illustration and is not to be construed as limiting the claims.

The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to be changed, and all changes made within the scope of the utility model as independently claimed are within the scope of the utility model.

Claims

1. The utility model provides a nozzle, a serial communication port, including body (1), body (1) surface is equipped with a flame gas outlet (11), a combustion-supporting gas inlet port (12) and a plurality of gas inlet port (13), body (1) inside is equipped with inner chamber main part (2), inner chamber main part (2) are including combustion chamber (3), air-fuel diversion chamber (4) and gas inlet channel (5), combustion chamber (3) and flame gas outlet (11) intercommunication, gas inlet channel (5) and gas inlet port (13) intercommunication, air-fuel diversion chamber (4), gas inlet channel (5) all communicate with each other combustion chamber (3), combustion-supporting gas inlet port (12) and air-fuel diversion chamber (4) intercommunication, gas inlet channel (5) are including one-level gas channel (51) and a plurality of annular setting at second grade gas channel (52) of one-level gas channel (51) periphery, through one-set between second grade gas channel (52) establish annular channel (53) at the periphery of gas channel (51).

2. A burner as claimed in claim 1, wherein: the fuel gas generator further comprises a plurality of tertiary fuel gas channels (54), and the tertiary fuel gas channels (54) are communicated with the annular channels (53).

3. A burner as claimed in claim 2, wherein: the air intake cross-sectional area of the tertiary gas passage (54) is larger than the air intake cross-sectional area of the secondary gas passage (52).

4. A burner as claimed in claim 1, wherein: the surface of the body (1) is also provided with a UV detection port (14) for detecting the temperature in the combustion chamber (3).

5. A combustion apparatus employing the burner of any one of claims 1-4, characterized in that: comprises a heat storage body (10), wherein a flame outlet (11) on the body (1) is communicated with the inside of the heat storage body (10).

6. A combustion apparatus as claimed in claim 5, wherein: the heat storage device is characterized by further comprising a heat storage device (9), a heat exchange cavity is arranged in the heat storage device (9), an exhaust gas outlet (101) communicated with the heat exchange cavity is formed in the inner wall of the heat storage body (10), a heat exchange pipe (92) communicated with the combustion-supporting gas guide pipe (6) is arranged in the heat exchange cavity, and the combustion-supporting gas guide pipe (6) is communicated with the combustion-supporting gas inlet interface (12) on the body (1).

7. A combustion apparatus as claimed in claim 6, wherein: the heat exchange cavity comprises a first heat exchange cavity (91) and a second heat exchange cavity (94), the first heat exchange cavity (91) wraps the second heat exchange cavity (94), the first heat exchange cavity is communicated with the second heat exchange cavity (94) through a connecting hole (95), and the second heat exchange cavity (94) is communicated with the heat storage body (10) through an exhaust gas outlet (101).