CN116659691A - End face temperature measuring nozzle device - Google Patents
End face temperature measuring nozzle device Download PDFInfo
- Publication number
- CN116659691A CN116659691A CN202310496533.2A CN202310496533A CN116659691A CN 116659691 A CN116659691 A CN 116659691A CN 202310496533 A CN202310496533 A CN 202310496533A CN 116659691 A CN116659691 A CN 116659691A
- Authority
- CN
- China
- Prior art keywords
- temperature measuring
- thermocouple
- nozzle
- wall
- fuel
- Prior art date
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 76
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 abstract description 22
- 238000009434 installation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides an end face temperature measuring nozzle device, which comprises a nozzle body and a temperature measuring structure arranged in a temperature measuring cavity at the bottom of the nozzle; the top plate of the temperature measuring cavity is provided with fuel guide holes distributed in the circumferential direction, and the wall is provided with corresponding fuel injection holes; the lower end face of the temperature measuring structure is flush with the end face of the nozzle spout, and the outer wall of the temperature measuring structure is matched with the inner wall of the temperature measuring cavity. The temperature measurement structure is arranged on the end face of the nozzle spout and is isolated from the fuel bin in the nozzle, the temperature of the end face of the nozzle can be measured, the temperature measurement end of the thermocouple cannot be influenced by high-speed air flow inside and outside the fuel bin, and the thermocouple is reliable in installation and not easy to fall off.
Description
Technical Field
The invention relates to the technical field of nozzle temperature measurement, in particular to an end face temperature measurement nozzle device.
Background
In modern gas turbine combustor designs, the nozzle is the most important component and is also a central factor limiting the level of combustor design. The nozzle test is typically performed prior to the burner test to fully grasp various performance parameters of the nozzle. In the nozzle test or the burner test, the measurement of the temperature of the wall surface of the nozzle can directly reflect whether the thermal design level of the nozzle and the safety of the nozzle meet the long-term use requirement, and can indirectly acquire whether tempering is generated during the combustion of the nozzle, whether the combustion is stable and the like.
The utility model provides a prior art patent number CN 205138661U-multiple temperature measurement point nozzle, the nozzle is connected with the continuous pipe, fixed mounting has a thermocouple on the nozzle, just the thermocouple passes the inside of continuous pipe, follow in the armor of thermocouple the length direction of thermocouple is equipped with a plurality of temperature measurement points, a plurality of temperature measurement points are including being located the temperature measurement point of nozzle exit end, just the temperature measurement point of nozzle exit end is fixed through the cutting ferrule device in the first preformed hole of nozzle main part. The problem in the prior art is that the thermocouple is directly fixed on the inner wall of the nozzle, is easily influenced by high-speed air flow, has low measurement accuracy and is easy to cause the thermocouple to fall off.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an end face temperature measuring nozzle device, which comprises a nozzle body and a temperature measuring structure arranged in a temperature measuring cavity at the bottom of the nozzle; the top plate of the temperature measuring cavity is provided with fuel diversion holes distributed circumferentially, and the outer wall of the temperature measuring cavity is provided with corresponding fuel injection holes; the lower end face of the temperature measuring structure is flush with the end face of the nozzle spout, and the outer wall of the temperature measuring structure is matched with the inner wall of the temperature measuring cavity. The temperature measurement structure is arranged at the bottom of the nozzle and is isolated from a fuel bin in the nozzle.
Preferably, a thermocouple chamber is arranged in the temperature measuring structure, and a thermocouple temperature measuring end is fixed in the thermocouple chamber. The thermocouple is directly welded or fixed in the temperature measuring structure by adopting a pressing plate, and can be mutually matched with more structural nozzles to be installed, so that the compatibility and the reusability of the end face temperature measuring structure are improved.
Preferably, a fuel bin is arranged in the nozzle body, and a central hole connected with a fuel pipeline is arranged at the top of the fuel bin. The fuel bin separates the fuel flow passage from the temperature measuring structure. The fuel flows in from the central hole at the top of the fuel bin, flows out from the fuel diversion hole at the bottom, the main flowing direction is unchanged, and the flow velocity and pressure loss of the fuel are small.
Preferably, the outer wall of the nozzle body is connected with an annular guide plate, and the annular guide plate and the outer wall of the fuel bin form an annular air cavity with an upward opening. The outer wall of the nozzle body is connected with a guide plate to assist in air intake to the bottom of the nozzle. The annular guide plate makes circumferential air intake at the bottom of the nozzle uniform.
Preferably, the bottom of the annular air cavity is provided with air holes which are circumferentially distributed, the air holes are arc-shaped holes, the air holes are tightly attached to the outer wall of the fuel bin, and the positions of the air holes correspond to the fuel injection holes. The air hole diversion airflow outlet is positioned at the outlet of the fuel injection port, the airflow directly affects the fuel injection, and the arc-shaped appearance of the air hole reduces the pressure loss on the airflow flow velocity.
Preferably, the diameter of the bottom of the nozzle is matched with the diameter of the outer wall of the fuel bin. The nozzle bottom diameter affects the fuel injection position of the fuel injection hole. The diameter of the outer wall of the fuel bin affects the position of the air holes. The two are matched with each other to enable the air flow at the air hole to directly affect the fuel injection hole to achieve the maximum effect.
Preferably, the wall of the thermocouple chamber and the nozzle body are provided with thermocouple leading-out holes, the thermocouple chamber sections of the thermocouple leading-out holes are flush with the bottom surface of the thermocouple chamber, and the nozzle body sections of the thermocouple leading-out holes are arranged at the gap between the fuel injection hole and the fuel diversion hole. The thermocouple leading-out holes are arranged to enable the thermocouple to work normally, and the thermocouple is located in the connecting gap to avoid the flushing of the thermocouple by high-speed air flow, prevent the thermocouple from falling off, and ensure the measurement accuracy of the thermocouple. When the thermocouple is led out, the thermocouple is led out to the outer wall of the annular guide plate through the partition plate part between the two air holes to be connected with the compensation lead, so that the flow of the main flow is not influenced. When the thermocouple is led out, the thermocouple is not bent at a large angle, and the temperature measurement performance of the thermocouple is ensured.
Preferably, the bottom surface of the thermocouple chamber is provided with a thermocouple leading-out hole, and the thermocouple leading-out hole is an inclined hole. The nozzle body does not need to be provided with a thermocouple leading-out hole.
Preferably, the temperature measuring structure and the nozzle body are made of the same processing material. The heat conduction efficiency of the temperature measurement structure and the nozzle body is the same, and the temperature measurement error caused by heat transfer is reduced.
The invention has the following beneficial effects: the temperature measuring end of the thermocouple is fixed in the temperature measuring structure, so that the wall surface temperature of the measuring position can be accurately obtained; the temperature measuring bottom plate is basically free from air flow, so that the thermocouple is very firmly installed, the temperature measuring component and the nozzle body are made of the same processing material, the wall temperature of the temperature measuring bottom plate can directly react with the wall temperature of the nozzle, and the measuring precision is high. In addition, because the outer wall of the temperature measuring structure is combined with the inner wall of the temperature measuring cavity of the nozzle in an assembling relationship, the temperature measuring structure is convenient to disassemble, and can be mutually matched with the nozzles in other structure forms to be installed, so that the compatibility and the reusability of the temperature measuring structure are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the nozzle of the present invention;
FIG. 3 is a cross-sectional view of the present invention at the combustion injection holes;
FIG. 4 is a schematic diagram of a temperature measurement structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a temperature measurement structure according to an embodiment of the present invention;
1. a nozzle body; 2. a temperature measurement structure; 3. a thermocouple;
11. a first threaded hole; 12. a deflector; 13. a second threaded hole; 14. a fuel deflector hole; 15. a fuel injection hole; 16. a thermocouple leading-out hole; 17. a temperature measuring cavity; 18. an air hole; 19. a fuel bin;
22. a thermocouple chamber; 23. and a third threaded hole.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some, but not all, embodiments of the invention.
As shown in fig. 1, an end face temperature measuring nozzle device comprises a nozzle body 1 and a temperature measuring structure 2 arranged in a temperature measuring cavity 17 at the bottom of the nozzle; the top plate of the temperature measuring cavity is provided with circumferentially distributed fuel guide holes 14, and the wall is provided with corresponding fuel injection holes 15; the lower end face of the temperature measuring structure is flush with the end face of the nozzle spout, and the outer wall of the temperature measuring structure is matched with the inner wall of the temperature measuring cavity. The temperature measurement structure is arranged at the nozzle opening and is isolated from the fuel bin 19 in the nozzle, the temperature measurement structure and the flow channel of the fuel are not mutually interfered, the flow of the fuel is not influenced, and meanwhile, the temperature of the wall surface is accurately measured as close to the wall surface of the temperature measurement position as possible.
The inside thermocouple room 22 that is equipped with of temperature measurement structure 2, the inside fixed thermocouple temperature measurement end of thermocouple room. The thermocouple 3 is directly welded in the temperature measuring structure, and can be mutually matched with more structural nozzles to increase the compatibility of the end face temperature measuring structure. Because the temperature measuring structure is positioned on the end face of the nozzle spout, almost no air flows in the thermocouple chamber, so that the thermocouple is stably installed, and the temperature measuring result is accurate.
As shown in fig. 2, a fuel bin 19 is arranged in the nozzle body 1, and a central hole connected with a fuel pipeline is arranged at the top of the fuel bin 19. The fuel bin separates the fuel flow passage from the temperature measuring structure. The fuel flows in from the central hole at the top of the fuel bin, and flows out from the flow guiding hole at the bottom, so that the main flowing direction is unchanged. The first threaded hole 11 on the nozzle body is connected with a fuel pipeline, the nozzle model can be replaced, and a gasket is arranged between the fuel pipeline and the nozzle body to ensure the end face tightness.
The outer wall of the nozzle body is connected with an annular guide plate 12, and the annular guide plate and the outer wall of the fuel bin form an annular air cavity with an upward opening. The outer wall of the nozzle body is connected with a guide plate to assist in air intake to the bottom of the nozzle. The circular guide plate ensures that the circumferential air inlet at the bottom of the nozzle is uniform, and ensures that the air inlet amount of the air hole at each fuel injection hole is basically consistent.
The bottom of the annular air cavity is provided with air holes 18 which are circumferentially distributed, the air holes are arc-shaped holes, the air holes are tightly attached to the outer wall of the fuel bin, and the positions of the air holes correspond to the positions of the fuel injection holes 15. The fuel injection holes are in one-to-one correspondence with the fuel diversion holes and are uniformly arranged. The air hole diversion airflow outlet is positioned at the outlet of the fuel injection hole, the airflow directly affects the fuel injection, the arc-shaped appearance of the air hole reduces the pressure loss of airflow flow velocity, and the flow of each fuel injection hole is ensured to be basically consistent.
The diameter of the bottom of the nozzle is matched with the diameter of the outer wall of the fuel bin 19. The nozzle bottom diameter affects the fuel injection position of the fuel injection hole 15. The outer wall of the fuel bin should be an arc-shaped air hole side wall, so that the air at the air hole directly acts on the outlet of the fuel injection hole, and the air flow at the air hole 18 directly affects the fuel injection hole to achieve the maximum effect.
Example 1
As shown in fig. 1, 3 and 4, the wall of the thermocouple chamber in the temperature measuring structure and the nozzle body are provided with thermocouple leading-out holes 16, the sections of the thermocouple chamber of the thermocouple leading-out holes are flush with the bottom surface of the thermocouple chamber, and the sections of the nozzle body of the thermocouple leading-out holes are arranged at gaps between different fuel injection holes and fuel guide holes. The thermocouple leading-out hole 16 is arranged to enable the thermocouple to work normally, is positioned in the connecting gap and is not mutually interfered with the flow passage of the fuel, so that the thermocouple 22 is prevented from being washed by high-speed air flow, the thermocouple 22 is prevented from falling off, the thermocouple measurement accuracy is ensured, and meanwhile, the flow of the fuel is not influenced. When the thermocouple is led out, the thermocouple is led out to the outer wall of the annular guide plate through the partition plate part between the two air holes to be connected with the compensating lead, so that the flow of the main air flow is not influenced. When the thermocouple is led out, the thermocouple is not bent at a large angle, and the temperature measurement performance of the thermocouple is ensured.
Example 2
As shown in fig. 2 and 5, an end face temperature measuring nozzle device comprises a nozzle body 1 and a temperature measuring structure 2 arranged in a temperature measuring cavity 17 at the bottom of the nozzle; the top plate of the temperature measuring cavity is provided with circumferentially distributed fuel guide holes 14, and the wall is provided with corresponding fuel injection holes 15; the lower end face of the temperature measuring structure is flush with the bottom of the nozzle, and the outer wall of the temperature measuring structure is matched with the inner wall of the temperature measuring cavity.
As shown in fig. 5, a thermocouple leading-out hole 16 is formed in the bottom surface of the thermocouple chamber 22 in the temperature measuring structure 2, and the thermocouple leading-out hole is an inclined hole. The nozzle body does not need to be provided with a thermocouple leading-out hole. The thermocouple temperature measuring end is arranged in a thermocouple chamber of the temperature measuring structure through the inclined hole and is fixed, and the thermocouple is led out to the outer wall of the annular guide plate through a partition plate between the bottom of the nozzle and the two air holes and is connected with the compensating lead, so that the nozzle body is prevented from being drilled.
The temperature measuring structure and the nozzle body are made of the same processing material. The heat conduction efficiency of the temperature measuring structure and the nozzle body is the same, the wall surface temperature of the temperature measuring structure can directly reflect the temperature of the inner wall surface of the nozzle, and the temperature measuring error caused by heat transfer is reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The end face temperature measuring nozzle device is characterized by comprising a nozzle body (1) and a temperature measuring structure (2) arranged in a temperature measuring cavity (17) at the bottom of the nozzle;
the top plate of the temperature measuring cavity is provided with fuel guide holes (14) distributed in the circumferential direction, and the outer wall of the temperature measuring cavity is provided with corresponding fuel injection holes (15);
the lower end face of the temperature measuring structure is flush with the end face of the nozzle spout, and the outer wall of the temperature measuring structure is matched with the inner wall of the temperature measuring cavity.
2. An end face temperature measuring nozzle device according to claim 1, characterized in that a thermocouple chamber (22) is arranged in the temperature measuring structure, and a thermocouple (3) temperature measuring end is fixed in the thermocouple chamber.
3. An end face temperature measuring nozzle device according to claim 1, characterized in that the nozzle body is provided with a fuel bin (19) inside, the top of which is provided with a central hole connected with a fuel pipe.
4. An end face temperature measuring nozzle device according to claim 3, characterized in that the outer wall of the nozzle body is connected with an annular deflector (12), and the annular deflector and the outer wall of the fuel bin form an annular air cavity with an upward opening.
5. An end face temperature measuring nozzle device according to claim 4, characterized in that the bottom of the annular air cavity of the outer wall of the nozzle body is provided with air holes (18) distributed circumferentially, the air holes are arc-shaped holes, the air holes are clung to the outer wall of the fuel bin, and the positions of the air holes correspond to the positions of the fuel injection holes.
6. An end face temperature measuring nozzle device as claimed in claim 1, wherein the diameter of the bottom of the nozzle is matched with the diameter of the outer wall of the fuel bin.
7. An end face temperature measuring nozzle device according to claim 2, characterized in that the thermocouple chamber wall and the nozzle body in the temperature measuring structure are provided with thermocouple leading-out holes (16), the thermocouple chamber sections of the thermocouple leading-out holes are level with the bottom surface of the thermocouple chamber, and the nozzle body sections of the thermocouple leading-out holes are arranged at the gaps between different fuel injection holes and fuel diversion holes.
8. An end face temperature measuring nozzle device according to claim 2, characterized in that the bottom surface of the thermocouple chamber in the temperature measuring structure is provided with a thermocouple leading-out hole (16), and the thermocouple leading-out hole is an inclined hole.
9. An end face temperature measuring nozzle arrangement as claimed in claims 1 to 8, wherein the temperature measuring structure is formed of the same material as the nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496533.2A CN116659691A (en) | 2023-05-05 | 2023-05-05 | End face temperature measuring nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496533.2A CN116659691A (en) | 2023-05-05 | 2023-05-05 | End face temperature measuring nozzle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116659691A true CN116659691A (en) | 2023-08-29 |
Family
ID=87726953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310496533.2A Pending CN116659691A (en) | 2023-05-05 | 2023-05-05 | End face temperature measuring nozzle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116659691A (en) |
-
2023
- 2023-05-05 CN CN202310496533.2A patent/CN116659691A/en active Pending
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