CN112361374A - Flame detection device for combustion chamber of gas turbine - Google Patents
Flame detection device for combustion chamber of gas turbine Download PDFInfo
- Publication number
- CN112361374A CN112361374A CN202011197474.1A CN202011197474A CN112361374A CN 112361374 A CN112361374 A CN 112361374A CN 202011197474 A CN202011197474 A CN 202011197474A CN 112361374 A CN112361374 A CN 112361374A
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- CN
- China
- Prior art keywords
- gas turbine
- light
- air
- flame detection
- mounting plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
- F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
- F23M11/042—Viewing ports of windows
Abstract
The invention relates to a gas turbine combustion chamber flame detection device, comprising: the transparent glass is fixed on the outer cylinder of the combustion chamber through a metal flange; the mounting plate is arranged on the metal flange, and is provided with a light transmitting hole for light transmitted by the light transmitting glass to pass through; the light source amplifier is arranged on the mounting plate and used for receiving the light transmitted by the light-transmitting glass; the input end of the photoelectric converter is connected to the light source amplifier, and the output end of the photoelectric converter is connected to the upper computer; the device also comprises an annular guide plate, the annular guide plate is arranged between the mounting plate and the light source amplifier, a plurality of air outlets are arranged on the annular guide plate, a plurality of air guide holes which are in one-to-one correspondence with the air outlets are arranged on the mounting plate, and the air inlet end of the annular guide plate is connected to a compressed air source. Compared with the prior art, the method has the advantages that the flameout protection action is triggered by the gas turbine system by mistake, and the like.
Description
Technical Field
The invention relates to a gas turbine detection device, in particular to a flame detection device of a gas turbine combustion chamber.
Background
The gas turbine flame detector monitors the combustion conditions in the combustion chamber by detecting the light source emitted by the flame combustion in the combustion chamber of the gas turbine. On the basis of determining the three-dimensional space position of flame combustion in the combustion chamber, two flame detectors are respectively installed at positions close to 45 degrees on two sides of an upper half cylinder of the combustion chamber, the vision fields of the two detectors are utilized to form a cross point, the cross point is aligned to the central point of the whole flame combustion space, and the flame signals acquired by the two detectors are ensured to be consistent all the time.
The flame detector can judge the establishment and the extinguishment of flame in the combustion chamber of the gas turbine and monitor the combustion condition of the unit in the starting, the stopping and the running processes in real time. When the combustion chamber is flamed out, the two flame detectors can not acquire flame signals, two flame detectors are used for triggering flameout protection action, the combustion engine trips, the fuel emergency blocking valve is turned off, the fuel valve is closed, and the dangerous conditions that fuel in the fuel chamber is accumulated, the combustion chamber explodes and the like are avoided.
However, in practical applications, it often happens that the combustion chamber is normally combusted, but the system still triggers the flameout protection action, and the interlocking turbine trips together, so that the EOH time (effective operation hours) of the gas turbine is increased, and the operable time of the gas turbine is shortened.
Disclosure of Invention
Through analysis and research of the inventor, the reason that the flameout protection action is triggered by the system by mistake is found to be that the detection angle is deviated due to the thermal deformation of the mounting plate and the thermal breakage of the transparent glass, so that the light source received by the light source amplifier is too small.
The invention aims to provide a flame detection device for a combustion chamber of a gas turbine, which can form a layer of cooling air film between a mounting plate and a metal flange and at the periphery of light-transmitting glass by arranging an annular guide plate, a corresponding air outlet and an air guide hole with a special structure, thereby avoiding system false triggering flameout protection caused by light path dislocation of the light-transmitting glass and a light source amplifier, avoiding increasing EOH time of the gas turbine and reducing the operable time of the gas turbine.
The purpose of the invention can be realized by the following technical scheme:
a gas turbine combustor flame detection apparatus comprising:
the transparent glass is fixed on the outer cylinder of the combustion chamber through a metal flange;
the mounting plate is arranged on the metal flange, and is provided with a light transmitting hole for light transmitted by the light transmitting glass to pass through;
the light source amplifier is arranged on the mounting plate and used for receiving the light transmitted by the light-transmitting glass;
the input end of the photoelectric converter is connected to the light source amplifier, and the output end of the photoelectric converter is connected to the upper computer;
the device also comprises an annular guide plate, the annular guide plate is arranged between the mounting plate and the light source amplifier, a plurality of air outlets are arranged on the annular guide plate, a plurality of air guide holes which correspond to the air outlets one to one are arranged on the mounting plate, and the air inlet end of the annular guide plate is connected to a compressed air source.
The mounting plate is a Teflon plate.
The mounting plate is mounted on the metal flange through bolts.
The number of the bolts is three.
And four air outlets and four air guide holes are arranged.
The diameter of the air outlet is 2-5 cm.
The diameter of the air outlet is 3 cm.
The diameter of the air guide hole close to one side of the annular guide plate is consistent with that of the air outlet hole.
The air guide hole gradually expands from one side close to the annular guide plate to the opening on the other side.
Compared with the prior art, the invention has the following beneficial effects:
1. through the arrangement of the annular guide plate, the corresponding air outlet holes and the air guide holes with special structures, a layer of cooling air film can be formed between the mounting plate and the metal flange and on the periphery of the light-transmitting glass, so that system false triggering flameout protection caused by light path dislocation of the light-transmitting glass and the light source amplifier is avoided, the EOH time of the gas turbine is prevented from being increased, and the operation time of the gas turbine is shortened.
2. The use reliability of the Teflon board is improved, the problem of thermal deformation is radically solved, and the daily inspection and maintenance cost of the equipment is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1. the light-transmitting glass comprises 2 parts of light-transmitting glass, 3 parts of metal flanges, 4 parts of mounting plates, 5 parts of light source amplifiers, annular guide plates, 6 parts of bolts, 7 parts of cylinder bodies.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A gas turbine combustor flame detection apparatus comprising:
the transparent glass 1 is fixed on an outer cylinder of the combustion chamber through a metal flange 2;
a mounting plate 3 mounted on the metal flange 2 and having a light transmitting hole for passing light transmitted through the light transmitting glass 1;
the light source amplifier 4 is arranged on the mounting plate 3, is convex high-temperature glass and is used for receiving the light transmitted by the light-transmitting glass 1;
the input end of the photoelectric converter is connected to the light source amplifier 4, and the output end of the photoelectric converter is connected to an upper computer;
the device also comprises an annular guide plate 5, the annular guide plate 5 is arranged between the mounting plate 3 and the light source amplifier 4, a plurality of air outlets 51 are arranged on the annular guide plate 5, a plurality of air guide holes 31 which are in one-to-one correspondence with the air outlets 51 are arranged on the mounting plate 3, and the air inlet end of the annular guide plate 5 is connected to a compressed air source.
Through the arrangement of the annular guide plate 5, the corresponding air outlet 51 and the air guide hole 31 with a special structure, a layer of cooling air film can be formed between the mounting plate and the metal flange and on the surface of the light-transmitting glass, so that system false triggering flameout protection caused by misplacement of the light-transmitting glass and a light source amplifier pipeline is avoided, the EOH time of the gas turbine is prevented from being increased, and the operable time of the gas turbine is reduced.
The diameter of the mounting plate 3 is 60 cm, and the mounting plate 3 is a Teflon plate and is mounted on the metal flange 2 through bolts, wherein the number of the bolts is three. In addition, four air outlet holes 51 and four air guide holes 31 are provided.
The diameter of the air outlet 51 is 2-5 cm, preferably, the diameter of the air outlet 51 is 3 cm.
The diameter of one side of the air guide hole 31 close to the annular guide plate 5 is consistent with the diameter of the air outlet 51, the opening of the air guide hole 31 from one side close to the annular guide plate 5 to the other side is gradually enlarged, so that air flow can pass through from three directions, air flow in two directions forms an air film between the mounting plate and the metal flange and on the periphery of the transparent glass, air flow in the middle direction can also cool the metal flange for fixing the transparent glass, and in other embodiments, a flow guide block is further arranged in the air guide hole 31.
An annular guide plate 5 is arranged above the Teflon plate, compressed air of a cooling medium is introduced into the annular guide plate 5, the compressed air is blown into four air guide holes 31 on the Teflon plate through four air outlet holes 51 of the annular guide plate 5, and a layer of air film is formed on the heating surface between the Teflon plate and the metal flange 2 and the periphery of the light-transmitting glass 1, so that the radiated high-temperature heat cannot directly contact the Teflon plate. Meanwhile, the compressed air can also cool and fix the three bolts 6 of the Teflon plate, so that the Teflon plate cannot be deformed by heat. The detection angle of the light source amplifier 4 is ensured to be unchanged.
Claims (10)
1. A gas turbine combustor flame detection apparatus comprising:
the light-transmitting glass (1) is fixed on an outer cylinder of the combustion chamber through a metal flange (2);
the mounting plate (3) is mounted on the metal flange (2), and is provided with a light-transmitting hole for light transmitted by the light-transmitting glass (1) to pass through;
the light source amplifier (4) is arranged on the mounting plate (3) and is used for receiving the light transmitted by the light-transmitting glass (1);
the input end of the photoelectric converter is connected to the light source amplifier (4), and the output end of the photoelectric converter is connected to an upper computer;
the device is characterized by further comprising an annular guide plate (5), wherein the annular guide plate (5) is arranged between the mounting plate (3) and the light source amplifier (4), a plurality of air outlets (51) are formed in the annular guide plate, a plurality of air guide holes (31) which correspond to the air outlets (51) one to one are formed in the mounting plate (3), and the air inlet end of the annular guide plate (5) is connected to a compressed air source.
2. The gas turbine combustor flame detection device of claim 1, wherein the compressed air source is an air compressor.
3. A gas turbine combustor flame detection device as claimed in claim 1, wherein the mounting plate (3) is a teflon plate.
4. A gas turbine combustor flame detection apparatus as claimed in claim 1, wherein the mounting plate (3) is bolted to the metal flange (2).
5. The gas turbine combustor flame detection apparatus of claim 4, wherein there are three bolts.
6. A gas turbine combustor flame detection apparatus as claimed in claim 1, wherein there are four of said air outlet holes (51) and air guide holes.
7. A gas turbine combustor flame detection assembly as claimed in claim 1 wherein the diameter of the exit orifice (51) is 2-5 cm.
8. A gas turbine combustor flame detection device as claimed in claim 1, wherein the diameter of said air outlet hole (51) is 3 cm.
9. A gas turbine combustor flame detection device as claimed in any one of claims 1-8, wherein the diameter of the side of the air guide hole (31) close to the annular deflector (5) is consistent with the diameter of the air outlet hole (51).
10. A gas turbine combustor flame detection device as claimed in claim 9, wherein the gas-guiding hole (31) is opened gradually from one side of the near-annular deflector (5) to the other side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197474.1A CN112361374A (en) | 2020-10-30 | 2020-10-30 | Flame detection device for combustion chamber of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197474.1A CN112361374A (en) | 2020-10-30 | 2020-10-30 | Flame detection device for combustion chamber of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112361374A true CN112361374A (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011197474.1A Pending CN112361374A (en) | 2020-10-30 | 2020-10-30 | Flame detection device for combustion chamber of gas turbine |
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| Country | Link |
|---|---|
| CN (1) | CN112361374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351686A (en) * | 2021-06-21 | 2021-09-07 | 中国船舶重工集团柴油机有限公司 | Correcting method for gas turbine low-pressure outer cylinder combined cylinder front guide plate |
-
2020
- 2020-10-30 CN CN202011197474.1A patent/CN112361374A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351686A (en) * | 2021-06-21 | 2021-09-07 | 中国船舶重工集团柴油机有限公司 | Correcting method for gas turbine low-pressure outer cylinder combined cylinder front guide plate |
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