CN220815836U

CN220815836U - Igniter

Info

Publication number: CN220815836U
Application number: CN202322724004.1U
Authority: CN
Inventors: 牟影; 李明; 李小萌
Original assignee: China Hangfa Gas Turbine Co ltd
Current assignee: China Hangfa Gas Turbine Co ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-04-19
Anticipated expiration: 2033-10-10

Abstract

The application discloses an igniter, comprising: the mounting seat is provided with a first perforation; the mounting joint is provided with a first end and a second end, the first end is arranged on the mounting seat, and the second end is provided with external threads; the ignition end of the ignition gun penetrates out of the second end; the annular gasket is provided with a fastening end and a pressing end, the cross section of the annular gasket along the axial direction is wedge-shaped at the position of the fastening end, the annular gasket is sleeved at the ignition end, and the fastening end is positioned in the second perforation; the threaded perforation of the nut is provided with an abutting step, the nut is in threaded connection with the external thread of the second end from the ignition end, and the abutting step abuts against the abutting end, so that interference fit is formed between the fastening end and the outer side wall of the ignition gun and the inner side wall of the mounting joint. The application is provided with the mounting joint, the annular gasket and the nut, when the length of the ignition gun extending into the combustion chamber is required to be adjusted, the extending length of the ignition gun can be adjusted by loosening the nut, and the nut can be screwed down again after the ignition gun is adjusted to a proper position, so that the adjusting process is convenient and quick.

Description

Igniter

Technical Field

The application relates to the field of gas turbines, in particular to an igniter.

Background

In the field of gas turbines, combustors have low emissions, high parameters, multiple fuels, and wide operating conditions requirements, all of which are related to combustor ignition. Currently, gas turbines often employ ignition guns to accommodate different combustor configurations, as well as different types of fuels. For the ignition gun, the length of the ignition end inserted into the combustion chamber is different, the ignition effect is different, for different fuel types, the length of the ignition end inserted into the combustion chamber is often required to be changed under different working conditions, a plurality of groups of gaskets with different sizes are arranged between the ignition gun and the combustion chamber at present, and when the ignition gun is used, the requirements of the igniter for inserting into the combustion chamber with different lengths are met by adjusting the number of the gaskets. However, in the structure of adjusting the length of the ignition gun inserted into the combustion chamber through the gasket, the sealing performance between the gaskets is poor, and the whole ignition gun needs to be removed for each adjustment, which is complicated.

Disclosure of utility model

The application provides an igniter, and aims to solve the problems that in the prior art, the length of the igniter inserted into a combustion chamber is complex, and the tightness is poor.

In an embodiment of the present application, an igniter is provided, including: the mounting seat is used for being mounted on the combustion chamber and is provided with a first perforation;

The mounting joint is provided with a first end and a second end, a second through hole is formed in the mounting joint in a hollow mode, the first end is arranged on the mounting seat, the second through hole is coaxial with the first through hole, and the second end is provided with external threads;

the ignition end of the ignition gun penetrates out of the second end;

The annular gasket is provided with a fastening end and a pressing end, the cross section of the annular gasket along the axial direction is wedge-shaped at the position of the fastening end, the annular gasket is sleeved at the ignition end, and the fastening end is positioned in the second perforation;

The nut is provided with an abutting step in a threaded perforation of the nut, the nut is in threaded connection with the external thread of the second end from the ignition end, and the abutting step abuts against the abutting end, so that interference fit is formed between the fastening end and the outer side wall of the ignition gun and the inner side wall of the mounting joint.

In the embodiment of the application, the inner side wall of the second end is provided with an annular pre-loading surface, and the wall thickness of the mounting joint at the position of the annular pre-loading surface is gradually increased from the second end to the first end.

In the embodiment of the application, an annular limiting step is arranged in the circumferential direction of the pressing end, and the outer diameter of the annular limiting step is larger than that of the mounting joint.

In an embodiment of the present application, the igniter further includes a protection tube, the protection tube penetrates through the first perforation, the protection tube is fixedly connected with the mounting seat, and the mounting joint is fixedly connected with the protection tube.

In the embodiment of the application, the protection pipe is welded with the mounting seat, and the protection pipe is welded with the mounting joint.

In the embodiment of the application, the mounting seat, the protection pipe and the mounting joint are uniformly formed.

In the embodiment of the application, the outer side wall of the installation joint is provided with a clamping part which is used for being matched with a spanner.

In the embodiment of the application, the ignition gun can be fixedly arranged on the combustion chamber by arranging the mounting joint, the annular gasket and the nut, when the length of the ignition gun extending into the combustion chamber needs to be adjusted, the extending length of the ignition gun can be adjusted by loosening the nut, and after the ignition gun is adjusted to a proper position, the nut is screwed down again, so that the adjustment process is convenient and quick. In addition, the fastening end of the annular gasket, the mounting joint and the ignition gun are in interference fit, so that the tightness is good.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an igniter according to an embodiment of the application;

fig. 2 is a schematic view of an igniter according to another embodiment of the application.

Reference numerals:

100-mount, 110-first perforation, 200-mounting joint, 210-second perforation, 220-first end, 230-second end, 240-annular pre-loading surface, 250-clamping part, 300-ignition gun, 310-ignition end, 400-annular gasket, 410-pressing end, 420-fastening end, 430-annular limit step, 500-nut, 510-abutment step and 600-protection tube.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

As shown in fig. 1, in an embodiment of the present application, the igniter includes: a mounting base 100, wherein the mounting base 100 is used for being mounted on a combustion chamber, and the mounting base 100 is provided with a first perforation 110; a mounting joint 200 having a first end 220 and a second end 230, wherein the mounting joint 200 is hollow to form a second through hole 210, the first end 220 is disposed on the mounting seat 100, the second through hole 210 is coaxial with the first through hole 110, and the second end 230 is provided with external threads; a firing gun 300, a firing end 310 of the firing gun 300 extending from the second end 230; the annular gasket 400 is provided with a fastening end 420 and a pressing end 410, the cross section of the annular gasket 400 along the axial direction is wedge-shaped at the position of the fastening end 420, the annular gasket 400 is sleeved at the ignition end 310, and the fastening end 420 is positioned in the second perforation 210; the nut 500 is provided with an abutment step 510 in a threaded hole of the nut 500, the nut 500 is screwed onto the external thread of the second end 230 from the ignition end 310, and the abutment step 510 abuts against the abutment end 410, so that an interference fit is formed between the fastening end 420 and the outer sidewall of the ignition gun 300 and the inner sidewall of the mounting joint 200.

As shown in FIG. 1, in an embodiment of the present application, the igniter is used in a combustion chamber of a gas turbine engine and for ignition.

The mounting base 100 is generally in a plate structure, in an embodiment, the mounting base 100 may be a mounting flange, a plurality of threaded holes (not shown in fig. 1) are provided on a plate surface of the mounting base 100, and the mounting base 100 can be fixedly mounted on a combustion chamber of a gas turbine by using a matching bolt, and a first penetrating hole 110 is further provided in a middle portion of the mounting base 100 for mounting the fire gun 300.

With continued reference to fig. 1, the mounting adapter 200 is generally tubular and hollow in its interior, the mounting adapter 200 has a first end 220 and a second end 230, the first end 220 being mounted to the mounting block 100, the second end 230 projecting from the mounting block 100, such as in the embodiment shown in fig. 1, the first end 220 extending into the first bore 110 of the mounting block 100 and fixedly attached to the mounting block 100, the second end 230 projecting from the plate surface of the mounting block 100, the mounting adapter 200 being externally threaded on the outer sidewall of the second end 230.

With continued reference to fig. 1, the ignition gun 300 penetrates into the mounting adapter 200, and the ignition end 310 of the ignition gun 300 extends from the second end 230 of the mounting adapter 200, the extended ignition end 310 being adapted to extend into the combustion chamber for ignition operation.

With continued reference to fig. 1, the annular gasket 400 is hollow, and is provided with a pressing end 410 and a fastening end 420 at two axial ends thereof, the annular gasket 400 is sleeved on the ignition end 310 during installation, the fastening end 420 extends into the second through hole 210, the nut 500 is sleeved on the second end 230 of the installation joint 200 from the ignition end 310, meanwhile, the pressing end 410 of the annular gasket 400 abuts against the abutting step 510 in the threaded through hole, when the nut 500 is screwed on the external thread of the installation joint 200, the nut 500 can enable the annular gasket 400 to gradually extend into between the inner side wall of the installation joint 200 and the outer side wall of the ignition gun 300, so that the ignition gun 300 forms interference fit with the installation joint 200, and the ignition gun 300 is fixed on the installation joint 200. When the length of the ignition gun 300 extending into the combustion chamber is required to be adjusted, the nut 500 is loosened, the ignition gun 300 is adjusted to a proper position, and then the nut 500 is screwed again to be fixed, so that the adjustment process is convenient and quick.

In the embodiment of the application, the ignition gun 300 can be fixedly installed on the combustion chamber by arranging the installation joint 200, the annular gasket 400 and the nut 500, and when the length of the ignition gun 300 extending into the combustion chamber needs to be adjusted, the nut 500 is loosened, the extending length of the ignition gun 300 can be adjusted, and after the ignition gun 300 is adjusted to a proper position, the nut 500 is screwed again, so that the adjustment process is convenient and quick. In addition, the fastening end 420 of the annular gasket 400 is in interference fit with the mounting joint 200 and the ignition gun 300, so that the sealing performance is also good.

As shown in fig. 1, in the embodiment of the present application, the inner sidewall of the second end 230 is provided with an annular pre-loading surface 240, and the wall thickness of the mounting joint 200 at the location of the annular pre-loading surface 240 gradually increases in the direction from the second end 230 to the first end 220.

Wherein, the inside wall of the second end 230 is provided with an annular pre-loading surface 240, the annular pre-loading surface 240 is an inverted conical inclined surface, the wall thickness of the mounting joint 200 is gradually thickened at the position of the annular pre-loading surface 240, the annular pre-loading surface 240 can play a role in pre-positioning, and the annular gasket 400 can be easily inserted into the second perforation 210 during mounting.

As shown in fig. 1, in the embodiment of the present application, an annular limiting step 430 is disposed in the circumferential direction of the pressing end 410, and the outer diameter of the annular limiting step 430 is greater than the outer diameter of the mounting joint 200. When the nut 500 is screwed onto the external thread of the mounting joint 200, the annular gasket 400 gradually extends into the second perforation 210, and the annular limiting step 430 is arranged in the circumferential direction of the pressing end 410, so that the whole annular gasket 400 can be prevented from being completely pressed into the second perforation 210, and the whole annular gasket 400 can not be pulled out after being completely pressed into the second perforation 210, so that the length of the flame 300 extending into the combustion chamber can not be adjusted.

As shown in fig. 2, in the embodiment of the present application, the igniter further includes a protection tube 600, the protection tube 600 penetrates through the first through hole 110, the protection tube 600 is fixedly connected to the mounting base 100, and the mounting connector 200 is fixedly connected to the protection tube 600. The protection tube 600 has a tubular shape, an inner diameter corresponding to an outer diameter of the ignition gun 300, and an outer diameter corresponding to an aperture of the first through hole 110 of the mounting base 100, and when the protection tube 600 is mounted, the protection tube 600 passes through the first through hole 110 and is connected with the mounting joint 200, and the ignition gun 300 passes through the protection tube 600 and the mounting joint 200, so that the protection tube 600 can protect the ignition gun 300 and can seal between the ignition gun 300 and the mounting base 100.

In other embodiments, the protection tube 600 and the mounting joint 200 may be integrally formed, and may be integrally welded to the mounting base 100.

In other embodiments, the protection tube 600 and the mounting joint 200 may be manufactured separately, and the manufacturing process is simple, and the protection tube 600 is welded to the mounting seat 100 and the mounting joint 200 is welded to the protection tube 600 during mounting.

In another embodiment, the mounting base 100, the protection tube 600 and the mounting joint 200 can be integrally formed, and the structure does not need welding, so that the sealing effect is better.

As shown in fig. 1 and 2, in the embodiment of the present application, a clamping portion 250 is provided on an outer sidewall of the mounting joint 200, and the clamping portion 250 is used for adapting to a wrench. Wherein, joint portion 250 can be hexagonal, and spanner joint of being convenient for utilizes spanner joint in the installation on joint portion 250, easy to assemble.

The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the application, and all the equivalent structural changes made by the description of the present application and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the application.

Claims

1. An igniter, comprising:

The mounting seat is used for being mounted on the combustion chamber and is provided with a first perforation;

the ignition end of the ignition gun penetrates out of the second end;

2. The igniter of claim 1 wherein the inner sidewall of the second end defines an annular pre-load surface, the mounting tab having a wall thickness that increases gradually from the second end to the first end at the location of the annular pre-load surface.

3. The igniter of claim 1 wherein the press end has an annular stop step disposed circumferentially therearound, the annular stop step having an outer diameter greater than an outer diameter of the mounting adapter.

4. The igniter of claim 1 further comprising a protective tube extending through the first bore, the protective tube being fixedly connected to the mounting block, the mounting nipple being fixedly connected to the protective tube.

5. The igniter of claim 4 wherein the protective tube is welded to the mounting socket and the protective tube is welded to the mounting joint.

6. The igniter of claim 4 wherein the mounting block, the protective tube and the mounting joint are integrally formed.

7. The igniter of claim 1 wherein the mounting tab has a snap-fit feature on an outer sidewall thereof for mating with a wrench.