CN215259817U

CN215259817U - Gas nozzle of combustor

Info

Publication number: CN215259817U
Application number: CN202120423512.4U
Authority: CN
Inventors: 姚跃辉; 苏志能
Original assignee: Shanghai Hongqiao International Airport Co ltd
Current assignee: Shanghai Hongqiao International Airport Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-21
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a gas nozzle of combustor, including multiunit gas main nozzle, the gas main nozzle is even group, even group the gas main nozzle sets up along combustor fixed frame inner wall equidistant, every group the quantity of gas main nozzle is two, and is two sets of in arbitrary relative setting select one respectively in the gas main nozzle carries out the shutoff through the head. The utility model plugs and fixes any two symmetrically arranged nozzles of the main gas nozzle through the end socket, reduces the amount of air flow convolution, greatly reduces the disorder degree of combustion flame, forms stable combustion flame, ensures the stable operation of the burner, thereby reducing the vibration of the boiler and ensuring the safe operation of the boiler; the seal head is in threaded connection with the main gas nozzle and locked by a screw to prevent loosening, and the fixing structure is firm and reliable; the outer diameters of the end socket and the combustion main nozzle are consistent, so that the flow resistance of air flow is reduced, and the combustion resistance is reduced.

Description

Gas nozzle of combustor

Technical Field

The utility model relates to a gas nozzle especially relates to a gas nozzle of combustor.

Background

The boiler is the most widely applied thermodynamic equipment in the industrial and civil heating fields at present, and consists of a boiler body, a burner, a pressure gauge and other accessory equipment. The combustor is through inside gas nozzle spun gas and air intensive mixing and form the burning in the combustor, and the flue gas after the burning passes through boiler body and reaches the afterbody chimney, at last discharges into in the atmosphere. The burner gas nozzle is used as an important component of the burner, and natural gas and air are subjected to chemical reaction at a high temperature through the gas nozzle to form combustion in a boiler hearth, so that the aim of continuously providing heat for a user by the boiler is fulfilled. The existing gas nozzle comprises a plurality of gas main nozzles which are completely symmetrically arranged, the gas main nozzles are arranged along the inner wall of a fixed frame of a burner, the sprayed natural gas can cause lower peripheral air pressure in a boiler hearth and causes entrainment to the surrounding air, and the rear part of the burner nozzle generates larger swirling flame and smoke. So that the boiler generates intermittent vibration and has hidden installation troubles.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas nozzle of combustor is provided, slows down combustion flame periphery and inside atmospheric pressure disorder, reduces the boiler vibration, ensures boiler safe operation.

The utility model discloses a solve above-mentioned technical problem and the technical scheme who adopts provides a gas nozzle of combustor, including multiunit gas main nozzle, the gas main nozzle is even group, and even group the equidistant setting of combustor fixed frame inner wall is followed to the gas main nozzle, every group the quantity of gas main nozzle is two, and is two sets of relative setting wantonly select one in the gas main nozzle respectively the gas main nozzle carries out the shutoff through the head.

Furthermore, the gas main nozzles are four groups, the fixed frame is in a regular octagon shape, the four groups of gas main nozzles are arranged along the edge of the fixed frame at intervals, and the gas main nozzles are communicated with a gas pipeline.

Further, the head includes shutoff end and link, the external diameter and the gas main nozzle internal diameter of link match, the gas main nozzle is provided with the internal thread, the link is provided with the external screw thread that matches with the internal thread, the external diameter and the gas main nozzle external diameter of shutoff end match, the head carries out fixed shutoff through link and gas main nozzle threaded connection.

Further, the head lateral wall is provided with the connecting hole, the gas main nozzle lateral wall is provided with the fixed orifices that matches with the connecting hole set up connecting bolt with head and gas main nozzle fixed connection in fixed orifices and the connecting hole.

Further, the internal diameter of gas main nozzle is 25mm, the external diameter of gas main nozzle is 28mm, the link external diameter of head is 24.8 mm. The external diameter of shutoff end is 28mm, the length of link is 15mm, the length of shutoff end is 3 mm.

Further, still be provided with ignition nozzle, air inlet whirl board and ignition electrode in the fixed frame, the ignition nozzle sets up the center at fixed frame, the air inlet whirl board is cyclic annular setting around the ignition nozzle outside the ignition nozzle, ignition electrode sets up between air inlet whirl board and fixed frame, ignition electrode's tip extends to ignition nozzle department, ignition electrode is connected with the ignition electricity.

Further, the air inlet rotational flow plate is the polylith, the polylith the air inlet rotational flow plate slope is arranged into cyclic annular setting and is outside at the ignition nozzle, the air inlet rotational flow plate communicates air inlet channel.

Furthermore, the material of the gas main nozzle and the end enclosure is stainless steel.

The utility model discloses contrast prior art has following beneficial effect: the utility model provides a gas nozzle of combustor, the arbitrary two symmetrical nozzles that set up of gas main nozzle block up and fix through the head, reduced the volume that the air current circles round, the great disorderly degree that alleviates burning flame, form stable burning flame, guaranteed the operation stability of combustor to reduce boiler vibration, guarantee boiler safe operation; the seal head is in threaded connection with the main gas nozzle and locked by a screw to prevent loosening, and the fixing structure is firm and reliable; the outer diameters of the end socket and the combustion main nozzle are consistent, so that the flow resistance of air flow is reduced, and the combustion resistance is reduced.

Drawings

FIG. 1 is a schematic view of a gas nozzle structure of the burner of the present invention;

fig. 2 is the schematic diagram of the sealing head structure of the present invention.

In the figure:

1. a gas main nozzle; 2. an ignition electrode; 3. an ignition nozzle; 4. an air intake swirl plate; 5. a fixed frame; 6. sealing the end; 7. a connecting end; 8. plugging the end; 9. an external thread; 10. and connecting the holes.

Detailed Description

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic view of the structure of the gas nozzle of the burner of the present invention.

Please refer to fig. 1, the utility model provides a gas nozzle of combustor, including multiunit gas main nozzle 1, gas main nozzle 1 is even group, and even group gas main nozzle 1 sets up along 5 equidistant inner walls of combustor fixed frame, every group the quantity of gas main nozzle 1 is two, and is two sets of relative setting wantonly select one respectively in the gas main nozzle 1 carries out the shutoff through head 6.

Specifically, the gas main nozzles 1 are four groups, the fixed frame 5 is a regular octagon, the four groups of gas main nozzles 1 are arranged along the edge of the fixed frame 5 at intervals, and the gas main nozzles 1 are communicated with a gas pipeline.

Specifically, still be provided with ignition nozzle 3, air inlet whirl board 4 and ignition electrode 2 in the fixed frame 5, ignition nozzle 3 sets up the center at fixed frame 5, air inlet whirl board 4 is the annular setting around ignition nozzle 3 in 3 outsides of ignition nozzle, ignition electrode 2 sets up between air inlet whirl board 4 and fixed frame 5, ignition electrode 2's tip extends to ignition nozzle 3 department, ignition electrode 2 is connected with the ignition electricity.

Preferably, air inlet rotational flow plate 4 is the polylith, the polylith air inlet rotational flow plate 4 slope is arranged into cyclic annular setting and is outside at ignition nozzle 3, air inlet rotational flow plate 4 communicates air inlet channel.

Please refer to fig. 2 simultaneously, the utility model provides a gas nozzle of combustor, head 6 include shutoff end 8 and link 7, the external diameter and the 1 internal diameter of gas main nozzle of link 7 match, gas main nozzle 1 is provided with the internal thread, link 7 is provided with the external screw thread 9 that matches with the internal thread, the external diameter and the 1 external diameter of gas main nozzle of shutoff end 8 match, the shutoff is fixed through

link

7 and 1 threaded connection of gas main nozzle to head 6.

Specifically, the side wall of the seal head 6 is provided with a connecting hole 10, the side wall of the gas main nozzle 1 is provided with a fixing hole matched with the connecting hole 10, and a connecting bolt is arranged in the fixing hole and the connecting hole 10 to fixedly connect the seal head 6 and the gas main nozzle 1.

In a specific embodiment, the inner diameter of the gas main nozzle 1 is 25mm, the outer diameter of the gas main nozzle 1 is 28mm, and the outer diameter of the connecting end 7 of the seal head 6 is 24.8 mm; the external diameter of shutoff end 8 is 28mm, the length of link 7 is 15mm, the length of shutoff end 8 is 3 mm.

Preferably, the material of gas main nozzle 1 and head 6 is stainless steel, and corrosion-resistant effect is good, long service life.

To sum up, the utility model provides a gas nozzle of combustor, two arbitrary symmetrical nozzles that set up of gas main nozzle 1 are sealed and are fixed through head 6, have reduced the volume that the air current circles round, the great disorder degree that alleviates burning flame forms stable burning flame, has guaranteed the operation stability of combustor to reduce boiler vibration, guarantee boiler safety operation; the seal head 6 is in threaded connection with the gas main nozzle 1 and locked through a screw to prevent loosening, and the fixing structure is firm and reliable; the end socket 6 is consistent with the outer diameter of the combustion main nozzle 1, so that the flow resistance of air flow is reduced, and the combustion resistance is reduced.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The gas nozzle of the combustor is characterized by comprising a plurality of groups of gas main nozzles, wherein the gas main nozzles are even groups, the even groups of gas main nozzles are arranged at equal intervals along the inner wall of a combustor fixing frame, the number of each group of gas main nozzles is two, and one gas main nozzle is selected from two groups of gas main nozzles which are arranged oppositely at will and is plugged through a sealing head.

2. The gas nozzle of burner as claimed in claim 1, wherein said gas main nozzles are four groups, said fixed frame is regular octagon, said four groups of gas main nozzles are arranged along the edge of fixed frame at intervals, said gas main nozzles are connected to the gas pipeline.

3. The gas nozzle of the burner as claimed in claim 1, wherein the sealing head includes a sealing end and a connecting end, the connecting end has an outer diameter matching with an inner diameter of the gas main nozzle, the gas main nozzle is provided with an internal thread, the connecting end is provided with an external thread matching with the internal thread, the outer diameter of the sealing end matches with an outer diameter of the gas main nozzle, and the sealing head is fixedly sealed by the connecting end in threaded connection with the gas main nozzle.

4. The gas nozzle of burner as claimed in claim 3, wherein the side wall of the head is provided with a connecting hole, the side wall of the gas main nozzle is provided with a fixing hole matching with the connecting hole, and connecting bolts are provided in the fixing hole and the connecting hole to fixedly connect the head and the gas main nozzle.

5. The gas nozzle of a burner as set forth in claim 3, wherein the inner diameter of the gas main nozzle is 25mm, the outer diameter of the gas main nozzle is 28mm, the outer diameter of the connection end of the cap is 24.8mm, the outer diameter of the cap end is 28mm, the length of the connection end is 15mm, and the length of the cap end is 3 mm.

6. The gas burner of claim 1, wherein an ignition nozzle, an air intake swirl plate and an ignition electrode are further disposed in the fixed frame, the ignition nozzle is disposed at the center of the fixed frame, the air intake swirl plate is disposed outside the ignition nozzle and annularly disposed around the ignition nozzle, the ignition electrode is disposed between the air intake swirl plate and the fixed frame, an end of the ignition electrode extends to the ignition nozzle, and the ignition electrode is electrically connected to the ignition device.

7. The gas burner of claim 6, wherein the air inlet swirl plate is formed in a plurality of pieces, and the air inlet swirl plates are arranged in an inclined manner to be annularly arranged outside the ignition nozzle and are communicated with the air inlet channel.

8. The gas nozzle of a burner as set forth in claim 1, wherein the main gas nozzle and the head are made of stainless steel.