CN113188851A - Ultra-high temperature high pressure gas sampler - Google Patents
Ultra-high temperature high pressure gas sampler Download PDFInfo
- Publication number
- CN113188851A CN113188851A CN202110018095.XA CN202110018095A CN113188851A CN 113188851 A CN113188851 A CN 113188851A CN 202110018095 A CN202110018095 A CN 202110018095A CN 113188851 A CN113188851 A CN 113188851A
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- sampler
- front panel
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- panel
- high pressure
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- 238000005070 sampling Methods 0.000 claims abstract description 26
- 239000000110 cooling liquid Substances 0.000 claims abstract description 23
- 239000002826 coolant Substances 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 19
- 239000000498 cooling water Substances 0.000 description 7
- 239000011257 shell material Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 238000004868 gas analysis Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The application provides an ultra-high temperature high pressure gas sampler belongs to the experimental technical field of aeroengine, the sampler includes: the front panel, the side panel and the upper panel are fixedly connected to form a containing cavity; the sampling tubes and the guide plates are arranged in the containing cavity, the sampling tubes partially extend out of the front panel and are arranged below the sampler in a bending and extending manner, and the guide plates divide the containing cavity into mutually communicated bent cooling liquid channels according to a preset rule; the gas flows in from the sampling tube of front panel department, flows out from the sampling tube below the sampler, and the coolant liquid flows in to hold the intracavity from the coolant liquid passageway of one side below the sampler, flows out to hold the chamber from the coolant liquid passageway of the opposite side below the sampler. The sampler that this application provided can improve service temperature, has guaranteed the smooth completion of combustion chamber temperature field test.
Description
Technical Field
The application belongs to the technical field of aero-engine tests, and particularly relates to an ultrahigh-temperature high-pressure gas sampler.
Background
The temperature field of the outlet of the combustion chamber of the aero-engine has an important influence on the service life of the turbine, the exhaust temperature of the combustion chamber is higher and higher along with the continuous improvement of the compressor pressure ratio and the combustion chamber oil-gas ratio of the engine, the pressure ratio of the aero-engine in the future reaches more than 50, the combustion chamber oil-gas ratio reaches more than 0.046, the average temperature of the outlet of the combustion chamber reaches more than 2300K, and the hot spot temperature can reach more than 2600K.
At present, the measurable highest temperature of a thermocouple for measuring a temperature field at the outlet of a combustion chamber is only 2100K, which cannot meet the requirement of measuring the temperature field of the combustion chamber of the aero-engine in the future, other modes capable of measuring the temperature of high-temperature fuel gas, such as an optical test technology, cannot be basically used for testing the temperature field of a full-ring combustion chamber of the aero-engine due to the limitation of a light path, and a fuel gas analysis technology is the only means capable of being used for testing the high-temperature field of the combustion chamber of the aero-engine in a quite long time. The gas analysis is a contact type testing technology, a gas sampler is directly contacted with high-temperature gas sprayed from a combustion chamber of an engine, and the safety of the gas sampler in a high-temperature and high-pressure environment determines the high-temperature testing capability of the gas analysis technology, as shown in fig. 1.
However, the existing gas sampler is often damaged in two ways: firstly, the local highest temperature of the outer shell of the sampler exceeds the melting point of the used material, so that the shell material is subjected to plastic deformation; secondly, the local stress of the shell material under the action of cooling water pressure and gas dynamic and static pressure exceeds the yield stress of the material at the working temperature. The traditional gas sampler adopts a classical heat transfer and intensity calculation method, can only obtain the average temperature of the surface of the sampler and the intensity of a weak point, and cannot reflect the distribution of the sampler in a high-temperature area. Under the condition that the temperature of the fuel gas is lower, the yield stress of the material is not exceeded in a local high-temperature area due to a larger design margin, and the fuel gas can be safely used. In a high-temperature and high-pressure gas environment, due to the limitation of available cooling water pressure and the internal structure of the sampler, the cooling of the sampler must be designed more finely within a limited pressure range and a limited space. Due to the fact that the traditional calculation and design method is imperfect, the sampler is often damaged in a high-temperature and high-pressure environment, the temperature field test cannot be completed smoothly, test time is greatly prolonged, test cost is improved, and test efficiency is reduced.
The method is characterized in that a classical heat transfer intensity calculation method and a numerical simulation method are adopted to calculate the conventional gas sampler, and the average temperature of the outer surface of the shell of the sampler and the temperature distribution of the outer surface of the shell of the numerical simulation method are respectively obtained. The average temperature differences obtained by the two methods are less than 50 ℃ and can be basically verified with each other, and the sampler surface temperature distribution is shown in fig. 2a and 2 b. It can be seen from the figure that the hot spot temperature is mainly concentrated at the intersection of the upper surface with the front and side surfaces. The reason for this is that the cooling water has a recirculation zone at these junctions, which leads to a reduction in the local flow velocity of the cooling water, which in turn reduces the heat transfer coefficient between the cooling water and the inner surface of the housing.
Therefore, the development of a sampler which can work safely and reliably in a high-temperature and high-pressure gas environment has important significance for improving and developing a gas analysis high-temperature testing technology.
Disclosure of Invention
It is an object of the present application to provide an ultra high temperature and high pressure gas sampler to solve or mitigate at least one of the problems of the background art.
The technical scheme of the application is as follows: an ultra-high temperature and high pressure gas sampler comprising:
the front panel, the side panel and the upper panel are fixedly connected to form a containing cavity;
the sampling tubes and the guide plates are arranged in the containing cavity, the sampling tubes partially extend out of the front panel and are arranged below the sampler in a bending and extending manner, and the guide plates divide the containing cavity into mutually communicated bent cooling liquid channels according to a preset rule;
the gas flows in from the sampling tube at the front panel and flows out from the sampling tube below the sampler, and the cooling liquid flows in the containing cavity from the cooling liquid channel at one side below the sampler and flows in the containing cavity from the cooling liquid channel at the other side below the sampler.
Further, the width of the guide plate is larger than the diameter of the sampling tube, so that a channel for the cooling liquid to flow through can be formed between the sampling tube and the side panel.
Furthermore, a plurality of the guide plates are uniformly distributed at intervals, so that the cooling liquid channel areas between the guide plates are the same.
Further, the joint of the front panel and the upper panel is provided with a plurality of water spray holes.
Furthermore, the distance between the water spraying holes is 3 mm-4 mm,
furthermore, the diameter of the water spraying hole is 0.5 mm-1 mm.
Furthermore, the cooling liquid channel flowing into the cavity is positioned below the sampler and close to one side of the front panel, and the cooling liquid channel flowing out of the cavity is positioned below the sampler and far away from one side of the front panel.
Furthermore, the front panel, the side panels, the upper panel, the sampling tube and the guide plate are fixed by welding.
Furthermore, the upper panel extends to the back of the sampler, and an opening is formed in the back of the upper panel and used for spraying the cooling liquid.
The sampler that this application provided can improve service temperature, has guaranteed the smooth completion of combustion chamber temperature field test.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is a schematic diagram of the sampler setting position.
Fig. 2a and 2b are schematic diagrams of a sampler simulation in the prior art.
Fig. 3 is an external view of the sampler of the present application.
Fig. 4 is a schematic diagram of the internal structure of the sampler of the present application.
Fig. 5 is a schematic view of the connection between the front panel and the upper panel of the present application.
Fig. 6 is a schematic diagram of a sampler simulation of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to overcome the problem that a high-temperature area exists on the surface of the shell of the sampler in the prior art, the cooling structure of the sampler in the prior art is improved.
As shown in fig. 3 to 5, the ultra-high temperature and high pressure sampler of the present application mainly includes: front panel 1, side panel 2, top panel 3, sampling tube 4 and guide plate 5.
The front end of the sampling tube 4 extends out of a small part of the front panel 1, the rear section of the sampling tube is bent and extends to the lower surface of the sampler, and the guide plate 5 divides the cavity into mutually communicated bent cooling liquid channels according to a certain rule.
The gas flows in from the left side of the sampling pipe 4 and flows out from below. The coolant flows in from the coolant passage on one side of the lower surface of the sampler, travels along the internal flow channels divided by the flow guide plate 5, and flows out from the other side of the lower surface of the sampler.
In order to allow the passage of the cooling liquid between the side panels 2, the width of the deflector 5 is substantially equal to the distance between the side panels 2, while the diameter of the sampling tube 4 is substantially smaller than the width of the deflector 5, for example half the width of the deflector 5, so as to allow the passage of the cooling liquid between the sampling tube 4 and the side panels 2.
In addition, the cooling liquid inlet in this application is arranged at the side close to the front panel 1 below the sampler, and the cooling liquid outlet is arranged at the side far away from the front panel 1 below the sampler, so that the cooling effect can be improved.
In the present application, the upper panel 3 is formed of a semicircular pipe in which the upper wall surface and the rear wall surface are curved. In one embodiment, the rear wall may be provided with drain holes so that the coolant can flow out of the drain holes in the rear wall. The upper panel 3 of curved form is connected with side board 2, can effectively avoid the junction right angle to be connected to avoid the cooling water to produce the swirl in local, thereby promoted the local heat transfer coefficient of inside cooling water and casing.
In addition, a plurality of water spraying holes 11 are formed in the joint of the upper panel 3 and the front panel 1, and part of cooling liquid flows out of the water spraying holes 11, so that local eddy can be effectively eliminated, and the cooling effect is enhanced. In one embodiment of the present application, the center-to-center distance of the water spraying holes is 3-4 mm, and the diameter is 0.5-1 mm. In addition, similar nozzle holes 31 may be provided in the upper panel 3 adjacent to the nozzle holes 11, the diameter of the nozzle holes 31 being slightly larger than that of the nozzle holes 11.
In the preferred embodiment of the present application, the flow guiding plates 5 are uniformly arranged at intervals as much as possible, so that the areas of the cooling liquid passages between the flow guiding plates 5 are the same or similar as much as possible, thereby ensuring that the cooling effect of each region is close.
Fig. 6 shows the temperature distribution of the outer surface of the sampler calculated by numerical simulation under the boundary conditions of the incoming gas temperature of 2500K and the pressure of 3.5MPa, which shows that the maximum temperature of the sampler is 1176K, and is located at the junction of the front panel and the upper panel, within the usable range of the high-temperature alloy material, and the surface temperature of the rest of the sampler is lower than 980K, and the plastic stress of the high-temperature alloy material at this temperature is much greater than the stress borne by the sampler under this working condition, indicating that the sampler is safe.
The superhigh temperature high pressure sampler that this application provided can be under the condition that combustion chamber pressure is 0.8MPa, gas hot spot temperature is 2478K, and normal work has guaranteed the smooth completion of combustion chamber temperature field test.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. An ultra-high temperature and high pressure gas sampler, comprising:
the foldable solar panel comprises a front panel (1), side panels (2) and an upper panel (3), wherein the front panel (1), the side panels (2) and the upper panel (3) are fixedly connected to form a containing cavity;
the sampling device comprises a plurality of sampling tubes (4) and a guide plate (4) which are arranged in the cavity, wherein the sampling tubes (4) partially extend out of the front panel (1) and are arranged below the sampler in a bending and extending manner from the front panel (1), and the guide plate (5) divides the cavity into mutually communicated bent cooling liquid channels according to a preset rule;
the gas flows in from a sampling tube (4) at the front panel (1) and flows out from the sampling tube (4) below the sampler, and the cooling liquid flows in the cavity from a cooling liquid channel at one side below the sampler and flows out of the cavity from a cooling liquid channel at the other side below the sampler.
2. The ultra-high temperature and high pressure gas sampler according to claim 1, wherein the width of the deflector (5) is greater than the diameter of the sampling tube (4) so that a passage for the flow of cooling liquid can be formed between the sampling tube (4) and the side panel (2).
3. The ultra-high temperature and high pressure gas sampler according to claim 1, wherein the plurality of baffles (5) are uniformly spaced so that the cooling liquid passage areas between the baffles (5) are the same.
4. The UHHP gas sampler according to claim 1, wherein the front panel (1) and the upper panel (3) have a plurality of water jet holes at their junction.
5. The gas sampler for ultra high temperature and high pressure as claimed in claim 4, wherein the distance between the water spray holes (11) is 3mm to 4 mm.
6. The ultra-high temperature and high pressure gas sampler according to claim 4, wherein the diameter of the water jet hole (11) is 0.5mm to 1 mm.
7. The gas sampler for ultra-high temperature and high pressure gas as claimed in claim 1, characterized in that the coolant passage flowing into the chamber is located below the sampler on the side close to the front panel (1), and the coolant passage flowing out of the chamber is located below the sampler on the side far from the front panel (1).
8. The ultra-high temperature and high pressure gas sampler of claim 1, wherein the front panel (1), the side panel (2), the upper panel (3), the sampling tube (4) and the guide plate (4) are fixed by welding.
9. The ultra high temperature and high pressure gas sampler according to claim 1, wherein the upper panel (3) extends to the rear of the sampler, and an opening is provided in the rear of the upper panel (3) for the ejection of the coolant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018095.XA CN113188851A (en) | 2021-01-07 | 2021-01-07 | Ultra-high temperature high pressure gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018095.XA CN113188851A (en) | 2021-01-07 | 2021-01-07 | Ultra-high temperature high pressure gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113188851A true CN113188851A (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110018095.XA Pending CN113188851A (en) | 2021-01-07 | 2021-01-07 | Ultra-high temperature high pressure gas sampler |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130206082A1 (en) * | 2011-08-12 | 2013-08-15 | Mcalister Technologies, Llc | Systems and methods for improved engine cooling and energy generation |
| CN204495626U (en) * | 2015-04-02 | 2015-07-22 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of gas high-temperature sampling apparatus |
| US20150218951A1 (en) * | 2012-09-14 | 2015-08-06 | Purdue Research Foundation | Interwoven channels for internal cooling of airfoil |
| CN204694505U (en) * | 2015-04-02 | 2015-10-07 | 中国航空工业集团公司沈阳发动机设计研究所 | Gas high-temperature sampling apparatus |
| CN207488027U (en) * | 2017-08-02 | 2018-06-12 | 中国航发商用航空发动机有限责任公司 | Acquire the sampling rake of sample gas |
| CN207516033U (en) * | 2017-09-19 | 2018-06-19 | 中国航发商用航空发动机有限责任公司 | Combustion gas suitable for combustor test is harrowed |
| CN108225777A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | The high enthalpy sample probe of scramjet engine fuel gas analysis |
| CN209294572U (en) * | 2018-12-12 | 2019-08-23 | 中国航发沈阳发动机研究所 | A kind of combustion gas sampling tube sealing device with cooling structure |
-
2021
- 2021-01-07 CN CN202110018095.XA patent/CN113188851A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130206082A1 (en) * | 2011-08-12 | 2013-08-15 | Mcalister Technologies, Llc | Systems and methods for improved engine cooling and energy generation |
| US20150218951A1 (en) * | 2012-09-14 | 2015-08-06 | Purdue Research Foundation | Interwoven channels for internal cooling of airfoil |
| CN204495626U (en) * | 2015-04-02 | 2015-07-22 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of gas high-temperature sampling apparatus |
| CN204694505U (en) * | 2015-04-02 | 2015-10-07 | 中国航空工业集团公司沈阳发动机设计研究所 | Gas high-temperature sampling apparatus |
| CN207488027U (en) * | 2017-08-02 | 2018-06-12 | 中国航发商用航空发动机有限责任公司 | Acquire the sampling rake of sample gas |
| CN207516033U (en) * | 2017-09-19 | 2018-06-19 | 中国航发商用航空发动机有限责任公司 | Combustion gas suitable for combustor test is harrowed |
| CN108225777A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | The high enthalpy sample probe of scramjet engine fuel gas analysis |
| CN209294572U (en) * | 2018-12-12 | 2019-08-23 | 中国航发沈阳发动机研究所 | A kind of combustion gas sampling tube sealing device with cooling structure |
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Application publication date: 20210730 |