A total temperature and total pressure measuring device

Abstract

The present application belongs to the technical field of measurement, and particularly relates to a total temperature and total pressure measuring device. The device comprises a bleed air duct 01, a total pressure duct 02, a shell 03, a total temperature duct 04 and a temperature sensing resistance cavity 05. The total temperature and total pressure structures are integrated in one device in the structural design of the device. The device has a reasonable bleed air duct arranged in the internal structure, and can simultaneously realize the anti-icing function of the total temperature measuring structure and the total pressure collecting structure.

Description

Technical Field

[0001] This invention belongs to the field of measurement technology, specifically relating to a total temperature and total pressure measuring device. Background Technology

[0002] Total pressure and total temperature within the air intake of an aero-engine are crucial aerodynamic parameters. Accurate measurement of these parameters is essential for the design and improvement of aero-engines. Currently, the sensors for measuring total pressure and total temperature are installed independently, which places high demands on engine design and sensor placement. This can affect the engine's air intake volume, reduce engine performance, and impose higher requirements on the engine's onboard power supply to meet anti-icing requirements. Summary of the Invention

[0003] This bleed air anti-icing total temperature and total pressure sensor effectively solves the shortcomings of traditional total temperature and total pressure sensors that are independently installed in the air intake of aero engines. It reduces the difficulty of installation and selection, reduces the impact on the engine intake air volume, and abandons electric heating anti-icing. Instead, it designs a reasonable bleed air flow channel inside the structure, realizing the bleed air anti-icing function and improving product reliability.

[0004] In view of this, the present invention provides a total temperature and total pressure measuring device, comprising: an air intake channel 01, a total pressure channel 02, a housing 03, a total temperature channel 04, and a temperature sensing and blocking cavity 05; wherein, the temperature sensing and blocking cavity 05 is disposed in the inner cavity of the housing 03, the total temperature channel 04 is divided into a first total temperature channel 041 and a second total temperature channel 042 in the inner cavity of the housing 03, the first total temperature channel 041 penetrates the top of the housing 03, the temperature sensing and blocking cavity 05 is disposed below the first total temperature channel 041, and the second total temperature channel 042 communicates with the temperature sensing and blocking cavity 05; the total temperature channel 04 is provided with a total temperature inlet 040 on the housing 03, and the first total temperature channel 041 is provided with a first... The housing 03 is provided with a total temperature exhaust port 043 and a second total temperature exhaust port 044, which is connected to the temperature sensing and blocking cavity 05. The total pressure air passage 02 penetrates the housing 03 and is provided with a total pressure air inlet 030 on the housing 03. A blocking protrusion 045 is provided at the bifurcation of the first total temperature air passage 041 and the second total temperature air passage 042, so that the second total temperature air passage 042 turns to the temperature sensing and blocking cavity 05. The duct 01 penetrates the housing 03 and passes near at least one of the total pressure air inlet 030, the total temperature air inlet 040, the first total temperature exhaust port 043, the total pressure air passage 02, and the second total temperature exhaust port 044.

[0005] Optionally, a temperature sensor is installed in the temperature-sensing blocking cavity 05.

[0006] Optionally, the exhaust port of the total pressure duct 02 is connected to the total pressure sensor.

[0007] Optionally, the main temperature air duct 04 is further provided with an upward slope angle 046, which is located before the bifurcation of the first main temperature air duct 041 and the second main temperature air duct 042.

[0008] Optionally, the housing 03 is further provided with a boundary layer control cavity 031, which is located at the slope angle 046 and extends through the housing 03.

[0009] Optionally, the air intake duct 01 is also provided with a micro exhaust port 011 on the housing 03 near the slope angle 046.

[0010] Optionally, the slope angle 046 is further provided with at least one boundary layer control hole 032, the boundary layer control hole 032 connecting the boundary layer control cavity 031 and the total temperature air passage 04.

[0011] Optionally, the duct 01 may also have a duct exhaust port 012 provided on the housing 03 near the first total temperature exhaust port 043.

[0012] Optionally, the device is 3D printed in one piece.

[0013] The present invention integrates the total temperature and total pressure structures into a single device. A well-designed airflow channel is arranged within the device structure to simultaneously achieve the anti-icing and de-icing functions of both the total temperature measurement structure and the total pressure acquisition structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a total temperature and total pressure measuring device according to an embodiment of the present invention;

[0015] Figure 2 This is a rear view of a structural schematic diagram of a total temperature and total pressure measuring device according to an embodiment of the present invention;

[0016] Figure 3 This is a cross-sectional view of a total temperature and total pressure measuring device according to an embodiment of the present invention;

[0017] Figure 4 This is a partially enlarged view of a structural schematic diagram of a total temperature and total pressure measuring device according to an embodiment of the present invention;

[0018] Explanation of reference numerals in the attached figures:

[0019] 01-Inlet airway, 011-Micro exhaust port, 012-Inlet air exhaust port, 02-Total pressure airway, 03-Shell, 030-Total pressure air inlet, 031-Boundary layer control cavity, 032-Boundary layer control hole, 04-Total temperature airway, 040-Total temperature air inlet, 041-First total temperature airway, 042-Second total temperature airway, 043-First total temperature exhaust port, 044-Second total temperature exhaust port, 045-Blocking protrusion, 046-Slope angle, 05-Temperature-sensing blocking cavity. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Figure 1 This is a schematic diagram of the structure of a total temperature and total pressure measuring device according to an embodiment of the present invention. Figure 2 This is a rear view of a structural schematic diagram of a total temperature and total pressure measuring device according to an embodiment of the present invention. Figure 3 This is a cross-sectional view of a structural schematic diagram of a total temperature and total pressure measuring device according to an embodiment of the present invention. Figure 4 This is a partially enlarged view of a structural schematic diagram of a total temperature and total pressure measuring device according to an embodiment of the present invention, as shown below. Figures 1-4As shown. A total temperature and total pressure measuring device includes: an air intake channel 01, a total pressure channel 02, a housing 03, a total temperature channel 04, and a temperature-sensing blocking cavity 05; wherein, the temperature-sensing blocking cavity 05 is disposed in the inner cavity of the housing 03, the total temperature channel 04 is divided into a first total temperature channel 041 and a second total temperature channel 042 in the inner cavity of the housing 03, the first total temperature channel 041 penetrates through the top of the housing 03, the temperature-sensing blocking cavity 05 is disposed below the first total temperature channel 041 to form an airflow blocking structure, and the second total temperature channel 042 is connected to the temperature-sensing blocking cavity 05; the total temperature channel 04 is provided with a total temperature inlet 040 on the housing 03, and the first total temperature channel 041 is provided with a first total temperature outlet on the housing 03. The housing 03 is provided with a second total temperature exhaust port 044, which is connected to the temperature sensing and blocking cavity 05. The total pressure air passage 02 penetrates the housing 03 and has a total pressure air inlet 030 on the housing 03. A blocking protrusion 045 is provided at the bifurcation of the first total temperature air passage 041 and the second total temperature air passage 042, so that the second total temperature air passage 042 turns to the temperature sensing and blocking cavity 05. The duct 01 penetrates the housing 03 and passes near at least one of the total pressure air inlet 030, the total temperature air inlet 044, the first total temperature exhaust port 043, the second total temperature exhaust port 044 and the total pressure air passage 02, and is used for anti-icing and de-icing of the above structure. Bleed air can be selected from the warm airflow generated by the engine and discharged from the bleed air outlet. The bleed air flow rate can be controlled by setting different pipe diameters, and the temperature of the high-temperature gas can also be adjusted to achieve the purpose of meeting the anti-icing and de-icing requirements, as well as accurately measuring the total temperature and total pressure.

[0022] Furthermore, a temperature sensor is installed in the temperature-sensing blocking cavity 05.

[0023] Furthermore, the exhaust port of the total pressure duct 02 is connected to the total pressure sensor.

[0024] Furthermore, the main temperature air duct 04 is also provided with an upward-sloping angle 046, which is located before the bifurcation point of the first main temperature air duct 041 and the second main temperature air duct 042. This allows the airflow entering the main temperature air duct 04 to separate from impurities such as rain and snow under the action of inertia. The impurities such as rain and snow are discharged through the first main temperature exhaust port 043 via the first main temperature air duct 041, while the clean airflow is deflected along the second main temperature air duct 042 after passing through the bifurcation point and reaches the temperature sensing barrier cavity 05, thereby protecting the temperature sensing component.

[0025] Furthermore, the shell 03 is also provided with a boundary layer control cavity 031, which is located at a slope angle 046 and extends through the shell 03. This is used to blow away the temperature boundary layer formed by the bleed air temperature into the outside atmosphere, thereby reducing the influence of the temperature boundary layer on the total temperature measurement.

[0026] Furthermore, the bleed airway 01 also has a micro exhaust port 011 on the housing 03 near the slope angle 046. This is used for de-icing the boundary layer control chamber 031.

[0027] Furthermore, the slope angle 046 is also provided with at least one boundary layer control hole 032, which connects the boundary layer control cavity 031 and the total temperature air passage 04. This further blows away the temperature boundary layer formed by the exhaust gas temperature into the outside atmosphere, reducing the influence of the temperature boundary layer on the total temperature measurement.

[0028] Furthermore, the bleed air duct 01 also has a bleed air exhaust port 012 on the housing 03 near the first total temperature exhaust port 043. This is used to de-ice the first total temperature exhaust port 043.

[0029] Furthermore, the device is 3D printed in one piece.

[0030] Compared with existing technologies, this device has the following advantages: high integration, miniaturization, lightweight, low installation and rotation requirements, low management and maintenance costs, and can meet the installation and use requirements in confined spaces on the machine. This device can realize bleed air anti-icing function, make full use of engine hot air, reduce dependence on the power supply on the machine near the engine, and has high practicality and economy.

[0031] The above are merely specific embodiments of the present invention, providing a detailed description of the invention. Parts not covered herein are conventional techniques. However, the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A total temperature and total pressure measuring device, characterized in that, include: It includes an air intake channel (01), a total pressure channel (02), a shell (03), a total temperature channel (04), and a temperature-sensing blocking chamber (05); The temperature-sensing blocking cavity (05) is disposed in the inner cavity of the housing (03). The total temperature air passage (04) is divided into a first total temperature air passage (041) and a second total temperature air passage (042) in the inner cavity of the housing (03). The first total temperature air passage (041) penetrates the top of the housing (03). The temperature-sensing blocking cavity (05) is disposed below the first total temperature air passage (041). The second total temperature air passage (042) is connected to the temperature-sensing blocking cavity (05). The total temperature air passage (04) is provided with a total temperature air inlet (040) on the housing (03). The first total temperature air passage (041) is provided with a first total temperature exhaust port (043) on the housing (03). The housing (03) is also provided with a second total temperature exhaust port (044). The second total temperature exhaust port (044) is connected to the temperature-sensing blocking cavity (05). The total pressure air passage (02) penetrates the housing (03), and the total pressure air passage (02) is provided with a total pressure air inlet (030) on the housing (03). A blocking protrusion (045) is provided at the bifurcation of the first main temperature air channel (041) and the second main temperature air channel (042), so that the second main temperature air channel (042) turns into the temperature sensing blocking cavity (05). The bleed air passage (01) penetrates the housing (03) and passes near at least one of the total pressure inlet (030), the total temperature inlet (040), the first total temperature exhaust port (043), the total pressure passage (02), and the second total temperature exhaust port (044).

2. The apparatus according to claim 1, characterized in that, A temperature sensor is installed in the temperature-sensing blocking cavity (05).

3. The apparatus according to claim 1, characterized in that, The exhaust port of the total pressure air passage (02) is connected to the total pressure sensor.

4. The apparatus according to claim 1, characterized in that, The main temperature air duct (04) is also provided with an upward slope angle (046), which is located before the bifurcation of the first main temperature air duct (041) and the second main temperature air duct (042).

5. The apparatus according to claim 4, characterized in that, The housing (03) is further provided with a boundary layer control cavity (031), which is located at the slope angle (046) and penetrates the housing (031).

6. The apparatus according to claim 5, characterized in that, The air intake channel (01) is also provided with a micro exhaust port (011) on the housing (03) near the slope angle (046).

7. The apparatus according to claim 5, characterized in that, The slope angle (046) is also provided with at least one boundary layer control hole (032), which connects the boundary layer control cavity (031) and the total temperature air passage (04).

8. The apparatus according to claim 1, characterized in that, The air intake duct (01) also has an air intake exhaust port (012) on the housing (03) near the first total temperature exhaust port (043).

9. The apparatus according to claim 1, characterized in that, The device is 3D printed in one piece.

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