CN213395300U

CN213395300U - Fabric burner assembly

Info

Publication number: CN213395300U
Application number: CN202022261553.6U
Authority: CN
Inventors: 邓延鸿
Original assignee: Zhuhai Geleen Energy Technology Co ltd
Current assignee: Zhuhai Geleen Energy Technology Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-08
Anticipated expiration: 2030-10-12

Abstract

The utility model relates to a fabric burner assembly, including the conveyer pipe that is used for carrying the main fire gas of premixing, the part that the conveyer pipe is located in the combustion chamber is combustion portion, combustion portion is cylindric, be equipped with female fire nozzle and female fire sleeve pipe in the combustion portion, female fire sleeve pipe with combustion portion fixed connection, female fire sleeve pipe includes female fire gas import and female fire gas export, female fire nozzle with female fire gas import intercommunication; the terminal opening downwards of combustion portion, the end of combustion portion includes the grid plate, the grid plate encloses into the tubulose, be equipped with the fluting on the lateral wall of grid plate, the lateral wall of grid plate is encircleed outward and is set up metal fabric, mother's fire gas export is located in the grid plate, and the flame of gas burning is worn out the combustion portion. The condensation water can be prevented from condensing to damage parts such as a combustor, and the burned smoke is uniformly radiated.

Description

Fabric burner assembly

Technical Field

The utility model belongs to the technical field of combustor and steam generator, concretely relates to fabric burner subassembly.

Background

The related art steam generator generally generates steam by exchanging heat generated by gas combustion with water. The conveying assembly of gas carries the gas to burn in the combustion chamber in order to produce heat, but the gas pipe that is used for supplying the gas is when communicating with the combustion chamber, and flue gas condensate water drips and is damaged the device in the combustion chamber easily in the combustion chamber, therefore also need arrange special condensation duct. This results in a steam generator requiring more components and occupying a larger space. In the prior art, high-temperature flue gas after combustion is directly discharged after heat exchange with water, heat in the flue gas cannot be effectively utilized, and the energy-saving environment-friendly concept is not met.

SUMMERY OF THE UTILITY MODEL

One of the objects of the present invention is to provide a fabric burner assembly, which can prevent condensed water from condensing and damaging the burner.

In order to achieve the technical purpose, the technical scheme of the utility model is as follows:

a fabric burner assembly is used for igniting gas in a combustion cavity and comprises a conveying pipe for conveying premixed main fire gas, wherein the part of the conveying pipe, which is positioned in the combustion cavity, is a combustion part, the combustion part is cylindrical, a main fire nozzle and a main fire sleeve are arranged in the combustion part, the main fire sleeve is fixedly connected with the combustion part, the main fire sleeve comprises a main fire gas inlet and a main fire gas outlet, and the main fire nozzle is communicated with the main fire gas inlet; the terminal opening downwards of combustion portion, the end of combustion portion includes the grid plate, the grid plate encloses into the tubulose, be equipped with the fluting on the lateral wall of grid plate, the lateral wall of grid plate is encircleed outward and is set up metal fabric, mother's fire gas export is located in the grid plate, and the flame of gas burning is worn out the combustion portion.

In the utility model, the fabric burner is inserted into the combustion chamber, and the tail end of the combustion part is opened downwards, so that the produced flue gas condensate water can be prevented from being condensed to damage the fabric burner; avoids laying condenser pipes and the like, so that the whole structure of the assembly is more compact and simpler. The combustion part is inserted into the combustion chamber in a cylindrical pipe shape, so that heat exchange pipes are arranged around the combustion part, the heat exchange area between the outer surface of each heat exchange pipe and the combustion end is increased, and the heat exchange efficiency is improved. The gas sprayed from the main fire nozzle contacts with air at the main fire gas inlet, then the gas is ignited at the main fire gas outlet, the premixed main fire gas in the delivery pipe is ignited in the combustion part, and the flame penetrates through the air distribution plate so as to uniformly generate flame on the surface of the metal fabric.

Preferably, the main fire gas outlet faces the side wall of the air distribution plate, and the main fire gas inlet is fixed with the inner wall of the combustion part; and a gap for air to pass through is reserved between the main fire nozzle and the main fire sleeve. The gas inlet of the main fire is fixed with the combustion part and has a gap with the nozzle of the main fire, so that the gas sprayed out from the nozzle of the main fire meets the air at the gap, and the effect of mixing the gas and the air is achieved. The fixation of the gas inlet of the main fire and the combustion part can also allow some deviation between the nozzle of the main fire and the gas inlet of the main fire.

Preferably, still include the support bar, the support bar level sets up, the one end of support bar with the inner wall of burning portion is fixed, the other end with mother's fire gas export is fixed. Will female fire gas import is fixed the back, and it is fixed with female fire gas export through the support bar to fix female fire sheathed tube both ends in the combustion portion, and avoid female fire sheathed tube to take place to warp.

Preferably, the burner also comprises a pilot fire air inlet pipe which passes through the combustion part and is communicated with the pilot fire nozzle; and a gap for air to pass through is reserved between the main fire nozzle and the main fire sleeve.

Preferably, a heat exchange pipe is surrounded around the combustion part, and the ratio of the caliber of the combustion part to the caliber of the heat exchange pipe is 1: (0.7-1.5). The shape of the duct is similar to that of the heat exchange tube, and the caliber of the duct is within the above ratio range, which contributes to increasing the area of the outer side wall of the heat exchange tube receiving heat while arranging as many heat exchange tubes around the combustion end as possible.

Preferably, the outer diameter of the portion of the delivery pipe located outside the combustion chamber is larger than the outer diameter of the combustion portion. The change of the outer diameter of the conveying pipe is beneficial to connecting the conveying pipe with the top of the combustion cavity in a sealing mode and fixing the conveying pipe with the combustion cavity.

Preferably, a sealing plate is arranged on the conveying pipe, and the outer diameter of the conveying pipe on one side of the sealing plate is larger than that of the conveying pipe on the other side of the sealing plate. The seal plate may secure the delivery tube to the combustion chamber.

Preferably, the heat exchange tube is a plurality of heat exchange tubes, the heat exchange tubes are arranged in a plurality of layers around the combustion part, and the heat exchange tube of the outer layer is arranged in a gap between two adjacent heat exchange tubes of the inner layer, so that the heat exchange tubes of the inner layer and the outer layer are arranged in a staggered mode. The outer tube wall of the heat exchange tube is used as a heat exchange surface, and water can pass through the heat exchange tube, for example, in some embodiments, 12 heat exchange tubes are arranged, 6 heat exchange tubes are arranged in an inner layer, the heat exchange tubes form a regular hexagon and surround the periphery of the central fabric burner, and 6 heat exchange tubes are arranged in an outer layer and are filled between gaps of adjacent heat exchange tubes in the inner layer. In other embodiments, three, four or more layers may be used. Due to the multi-layer arrangement of the heat exchange tubes, smoke generated after combustion passes through gaps among the heat exchange tubes, heat exchange is favorably carried out on the outer tube wall facing one surface of the fabric combustor, the heat exchange tubes and the surface, back to the fabric combustor, of the heat exchange tubes can be fully contacted with the smoke, the area of a heat exchange surface is increased, and the heat exchange efficiency is improved; meanwhile, the flow of the flue gas is blocked, and the flue gas can be favorably stopped on a heat exchange surface more.

Drawings

FIG. 1 is a schematic sectional view showing the structure of example 1;

FIG. 2 is an exploded view of example 1;

FIG. 3 is a perspective view of embodiment 1;

FIG. 4 is a schematic structural view of embodiment 1 or embodiment 2;

FIG. 5 is a schematic view of the internal structure of embodiment 2;

fig. 6 is an enlarged schematic structural view of the air distribution plate in embodiment 2.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Example 1

Referring to fig. 1 to 4, the fabric burner assembly comprises a delivery pipe 210 and a combustion chamber 201, wherein the portion of the delivery pipe 210 located in the combustion chamber 201 is cylindrical, the delivery pipe 210 comprises an air inlet end and a combustion end 211, the combustion end 211 is covered with metal fabric, the combustion end 211 is inserted into the combustion chamber from the top of the combustion chamber, and the opening of the combustion end 211 faces to the bottom of the combustion chamber.

The ratio of the caliber of the combustion end 211 to the caliber of the heat exchange tube 220 is 1: 1. the shape of the duct 210, which approximates the shape of the heat exchange tube 220 with a caliber in the above-described ratio range, helps to increase the area of the outer sidewall of the heat exchange tube 220 that receives heat while laying as many heat exchange tubes 220 around the combustion end 211 as possible.

The inlet end set up in outside the burning chamber, burning end 211 set up in the burning chamber 201, the conveyer pipe 210 be located the outside external diameter of the part in the burning chamber is greater than conveyer pipe 210 is located the outside diameter of the part in the burning chamber. The variation in the outer diameter of the delivery tube 210 facilitates sealing the delivery tube 210 to the top of the combustion chamber while facilitating securing the delivery tube 210 to the combustion chamber.

The delivery pipe 210 is provided with a sealing plate 202, and the outer diameter of the delivery pipe 210 on one side of the sealing plate 202 is larger than that on the other side of the sealing plate 202. The sealing plate 202 may secure the delivery tube 210.

And heat exchange tubes 220 penetrating through the top and the bottom of the combustion chamber are also arranged in the combustion chamber, and the heat exchange tubes 220 are arranged around the combustion end 211.

The combustion chamber comprises a first shell with an opened top and an opened bottom, a cover plate covering the top, a bottom plate covering the bottom and outer side walls of the heat exchange tubes 220. The heat in the combustion chamber is uniformly distributed.

The upper part of the first shell is provided with a smoke outlet 422. Most of the flue gas is required to flow back to the upper part of the combustion chamber to be discharged after heat exchange, so that the flame temperature is reduced, the emission of nitrogen oxides in the flue gas is effectively reduced, and the flue gas is cooled; the smoke outlet 422 exchanges heat with the water inlet pipe in the water inlet preheating cavity while discharging smoke, water is preheated before the water inlet liner, the heat of the smoke can be fully utilized, generated steam is finally discharged from the steam outlet, the shape of the water liner is approximate to that of the combustion chamber, and the combustion chamber is completely immersed in the water liner, so that the heat of the fabric combustor can be uniformly dissipated to the periphery from the middle part, the heat exchange efficiency is improved, and the fabric combustor is energy-saving and environment-friendly.

The water container 100 includes a cavity surrounded by a second housing, and the combustion chamber 201 is disposed in the second housing.

The flue gas conversion cavity 400 is further included, the flue gas conversion cavity 400 comprises a third shell 410 with an open upper part, the third shell 410 penetrates through the second shell and the combustion cavity 201, and the top wall covers the upper parts of the first shell and the third shell 410. The top wall covers the first and third housings to reduce weld joints.

In the utility model, because the fabric burner is inserted into the combustion chamber, the generated flue gas condensate water can be prevented from being condensed to damage the fabric burner; avoids laying condenser pipes and the like, so that the whole structure is more compact and simpler. The delivery pipe is inserted into the combustion chamber in a cylindrical pipe shape, so that heat exchange pipes are arranged around the delivery pipe, the heat exchange area between the outer surface of each heat exchange pipe and the combustion end is increased, and the heat exchange efficiency is improved.

Example 2

Referring to fig. 4, 5 and 6, a fabric burner assembly for igniting gas in a combustion chamber comprises a delivery pipe 210 for delivering premixed main fire gas, a combustion part is arranged in the combustion chamber of the delivery pipe 210, the combustion part is cylindrical, a main fire nozzle 211 and a main fire sleeve 212 are arranged in the combustion part, the main fire sleeve 212 is fixedly connected with the combustion part, the main fire sleeve 212 comprises a main fire gas inlet and a main fire gas outlet 213, and the main fire nozzle 211 is communicated with the main fire gas inlet; the end of combustion portion is the opening downwards, the end of combustion portion includes air distribution plate 216, air distribution plate 216 encloses into the tubulose, be equipped with fluting 216a on air distribution plate 216's the lateral wall, air distribution plate 216's lateral wall is outer to be encircleed and to be set up metal fabric 217, mother's fire gas export 213 is located in air distribution plate 216, the flame of gas burning is worn out the combustion portion.

The main fire gas outlet 213 faces the side wall of the air distribution plate 216, and the main fire gas inlet is fixed with the inner wall of the combustion part; a gap for air to pass through is reserved between the pilot fire nozzle 211 and the pilot fire sleeve 212. The gas inlet of the main fire is fixed with the combustion part and has a gap with the nozzle 211 of the main fire, so that the gas sprayed out from the nozzle 211 of the main fire meets the air at the gap, and the effect of mixing the gas and the air is achieved. The fixation of the pilot fire gas inlet to the combustion section also allows for some tolerance between the pilot fire nozzle 211 and the pilot fire gas inlet.

Still include support bar 215, support bar 215 level sets up, the one end of support bar 215 with the inner wall of burning portion is fixed, the other end with mother's fire gas export 213 is fixed. After the pilot fire gas inlet is fixed, the pilot fire gas outlet 213 is fixed by the support bar 215, so that both ends of the pilot fire sleeve 212 are fixed in the combustion part, and the pilot fire sleeve 212 is prevented from being deformed.

The burner also comprises a pilot fire air inlet pipe 214 which penetrates through the combustion part and is communicated with the pilot fire nozzle 211; a gap for air to pass through is reserved between the pilot fire nozzle 211 and the pilot fire sleeve 212.

The heat exchange pipe 220 is surrounded around the combustion part, and the ratio of the caliber of the combustion part to the caliber of the heat exchange pipe 220 is 1: 1. the duct 210 has a shape similar to the heat exchange tube 220 and has a bore diameter within the above ratio range, which contributes to increasing the area of the outer side wall of the heat exchange tube 220 that receives heat while arranging as many heat exchange tubes 220 around the combustion end as possible.

The outer diameter of the portion of the duct 210 located outside the combustion chamber is larger than the outer diameter of the combustion portion. The variation in the outer diameter of the delivery tube 210 facilitates sealing the delivery tube 210 to the top of the combustion chamber while facilitating securing the delivery tube 210 to the combustion chamber.

The delivery pipe 210 is provided with a sealing plate 202, and the outer diameter of the delivery pipe 210 on one side of the sealing plate 202 is larger than that on the other side of the sealing plate. The seal plate 202 may secure the delivery tube 210 to the combustion chamber.

The heat exchange tubes 220 are multiple and are arranged in a multi-layer mode around the combustion part, and the heat exchange tubes 220 on the outer layer are arranged in the gaps between every two adjacent heat exchange tubes 220 on the inner layer, so that the heat exchange tubes 220 on the inner layer and the heat exchange tubes 220 on the outer layer are arranged in a staggered mode. The outer tube wall of the heat exchange tube 220 is used as a heat exchange surface, water can be introduced into the heat exchange tube 220, and in embodiment 2, 12 heat exchange tubes 220 are formed, 6 heat exchange tubes 220 are formed in the inner layer, and the heat exchange tubes are formed in the regular hexagonal shape and surround the periphery of the fabric burner in the center, and 6 heat exchange tubes 220 are formed in the outer layer, and are filled in gaps between adjacent heat exchange tubes 220 in the inner layer. In other embodiments, three, four or more layers may be used. Because the heat exchange tubes 220 are arranged in multiple layers, the flue gas generated after combustion passes through gaps among the heat exchange tubes 220, so that heat exchange is favorably carried out on the outer tube wall facing one surface of the fabric burner, the surfaces among the heat exchange tubes 220 and the heat exchange tubes 220 back to the fabric burner can be fully contacted with the flue gas, the area of a heat exchange surface is increased, and the heat exchange efficiency is improved; meanwhile, the flow of the flue gas is blocked, and the flue gas can be favorably stopped on a heat exchange surface more.

Because the fabric burner is inserted into the combustion chamber, and the tail end of the combustion part is opened downwards, the main fire gas enters the combustion chamber from top to bottom and is combusted, and the generated flue gas condensate water can be prevented from being condensed to damage the fabric burner; avoids laying condenser pipes and the like, so that the whole structure of the assembly is more compact and simpler. The combustion part is inserted into the combustion chamber in a cylindrical pipe shape, so that heat exchange pipes are arranged around the combustion part, the heat exchange area between the outer surface of each heat exchange pipe and the combustion end is increased, and the heat exchange efficiency is improved. The gas sprayed from the main fire nozzle contacts with air at the main fire gas inlet, then the gas is ignited at the main fire gas outlet, the premixed main fire gas in the delivery pipe is ignited in the combustion part, and the flame penetrates through the air distribution plate so as to uniformly generate flame on the surface of the metal fabric.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A fabric burner assembly is used for igniting gas in a combustion cavity and is characterized by comprising a conveying pipe for conveying premixed main fire gas, wherein the part of the conveying pipe, which is positioned in the combustion cavity, is a combustion part, the combustion part is cylindrical, a main fire nozzle and a main fire sleeve are arranged in the combustion part, the main fire sleeve is fixedly connected with the combustion part, the main fire sleeve comprises a main fire gas inlet and a main fire gas outlet, and the main fire nozzle is communicated with the main fire gas inlet; the terminal opening downwards of combustion portion, the end of combustion portion includes the grid plate, the grid plate encloses into the tubulose, be equipped with the fluting on the lateral wall of grid plate, the lateral wall of grid plate is encircleed outward and is set up metal fabric, mother's fire gas export is located in the grid plate, and the flame of gas burning is worn out the combustion portion.

2. The fabric burner assembly of claim 1, wherein the pilot fire gas outlet is directed toward a side wall of the grid plate, and the pilot fire gas inlet is fixed to an inner wall of the combustion section; and a gap for air to pass through is reserved between the main fire nozzle and the main fire sleeve.

3. The fabric burner assembly of claim 2, further comprising a support bar, wherein the support bar is horizontally disposed, one end of the support bar is fixed to the inner wall of the combustion portion, and the other end of the support bar is fixed to the pilot fire gas outlet.

4. The fabric burner assembly of claim 1, further comprising a pilot fire air inlet tube in communication with the pilot fire nozzle through the combustion section.

5. The fabric burner assembly of claim 1, wherein the combustion section is surrounded by heat exchange tubes, and wherein the ratio of the caliber of the combustion section to the caliber of the heat exchange tubes is 1: (0.7-1.5).

6. The fabric burner assembly of claim 1, wherein the portion of the duct outside the combustion chamber has an outer diameter greater than an outer diameter of the combustion section.

7. A fabric burner assembly according to claim 6, wherein the feed tube is provided with a sealing plate, the feed tube having a larger outer diameter on one side of the sealing plate than on the other side of the sealing plate.

8. The fabric burner assembly of claim 5, wherein the heat exchange tube is a plurality of heat exchange tubes, a plurality of layers are arranged around the combustion portion, and the heat exchange tube of the outer layer is disposed in a gap between two adjacent heat exchange tubes of the inner layer such that the heat exchange tubes of the inner and outer layers are staggered.