A device and method for measuring engine wake temperature field

Abstract

The present invention discloses a device and method for measuring the temperature field of an engine wake to solve the problems of limited measurement range and low measurement accuracy in the prior art. The device and method for measuring the temperature field of an engine wake include a first support assembly, a second support assembly, a third support assembly, a measuring support, a first measuring member, a second measuring member, a driving rod, a plurality of temperature sensors and a controller. The controller is electrically connected to the first support assembly, the second support assembly, the third support assembly, the first measuring member, the second measuring member, the driving rod and each temperature sensor respectively. The measuring support is fixedly connected to the first support assembly and the second support assembly respectively. The driving end of the driving rod is connected to the third support assembly. The output end of the driving rod overlaps with the geometric center of the measuring support. The output end of the driving rod is connected to the first measuring member and the second measuring member respectively. The device and method for measuring the temperature field of an engine wake provided by the present invention are used to measure the temperature of the engine wake field.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and in particular to a device and method for measuring an engine wake temperature field. Background Art

[0002] The uniformity index of the temperature field distribution at the outlet of the engine combustion chamber is crucial to engine safety. Uneven temperature distribution at the outlet of the combustion chamber will lead to uneven wall temperature of components such as turbine high-pressure guide vanes, stator vanes or moving vanes in the flow channel at the rear of the combustion chamber, cracks in turbine components, local ablation, and even turbine blade ablation and fracture, resulting in engine failure. Due to the high temperature at the outlet of the combustion chamber, it is difficult to directly arrange temperature measurement points at the outlet of the combustion chamber or the position of the turbine high-pressure guide vane, and the service life of the sensor is reduced in a high temperature environment. Accurately measuring the outlet temperature of the combustion chamber and accurately analyzing the temperature field distribution have become research difficulties.

[0003] Researchers have proposed a variety of non-contact high-temperature measurement methods. By avoiding the high-temperature area near the combustion chamber outlet or the high-pressure turbine inlet, the airflow in the sub-high-temperature area behind the turbine is measured, and the temperature field distribution of the combustion chamber is evaluated by inversion after analyzing the measurement data. However, most of the existing test methods are fixed-section and fixed-point measurements, and the temperature data measured in a single test is relatively small. The wake temperature field constructed in this way has certain limitations and is not very accurate.

[0004] Therefore, how to design an engine wake temperature field measurement device with a wide measurement range and high accuracy is one of the important issues to be solved in this field. Summary of the invention

[0005] The object of the present invention is to provide a device and method for measuring the engine wake temperature field, so as to solve the problems of limited measuring range and low measuring accuracy in the prior art.

[0006] The present invention provides an engine wake temperature field measuring device, comprising a first support assembly, a second support assembly, a third support assembly, a measuring support, a first measuring piece, a second measuring piece, a driving rod, a plurality of temperature sensors and a controller, wherein the controller is electrically connected to the first support assembly, the second support assembly, the third support assembly, the first measuring piece, the second measuring piece, the driving rod and each temperature sensor, respectively; the measuring support is fixedly connected to the first support assembly and the second support assembly, respectively; the driving end of the driving rod is connected to the third support assembly, the output end of the driving rod overlaps with the geometric center of the measuring support, the output end of the driving rod is connected to the first measuring piece and the second measuring piece, respectively; the driving rod drives the first measuring piece and the second measuring piece to rotate around the geometric center of the measuring support, respectively; a plurality of temperature sensors are arranged in the first measuring piece and the second measuring piece along the axial direction perpendicular to the measuring support, respectively; the first measuring piece and the second measuring piece are both used to measure the engine wake temperature.

[0007] Preferably, the measurement support is an annular measurement support.

[0008] Preferably, the measuring support member also includes a first limit member, a second limit member, an outer ring and a central support ring. The central support ring is sleeved on the output end of the driving rod. One end of the first limit member is fixedly connected to the central support ring, one end of the second limit member is fixedly connected to the central support ring, and the other end of the first limit member and the other end of the second limit member are both slidably connected to the outer ring.

[0009] Preferably, the geometric center of the measurement support and the geometric center of the engine tail nozzle are located on the same axis.

[0010] Preferably, the driving rod drives the first measuring member and the second measuring member to rotate 180° around the geometric center of the measuring support respectively.

[0011] Preferably, the first support assembly, the second support assembly and the third support assembly move respectively along the downstream direction of the engine.

[0012] Preferably, the first support assembly includes a first driving mechanism, a first support member, a second support member and a first fixing member, the first driving mechanism is arranged at the sliding end of the first support member, the second support member is connected to the telescopic end of the first support member, the first fixing member is arranged on the second support member, and the first fixing member is used to fix the measuring support member.

[0013] Preferably, the second support assembly includes a second driving mechanism, a third support member, a fourth support member and a second fixing member, the second driving mechanism is arranged at the sliding end of the third support member, the fourth support member is connected to the telescopic end of the third support member, the second fixing member is arranged on the fourth support member, and the second fixing member is used to fix the measuring support member.

[0014] Preferably, the second support member and the fourth support member both have an adjusting member, and the adjusting member is respectively sleeved on the connecting end of the second support member and the connecting end of the fourth support member.

[0015] A method for measuring an engine wake temperature field is applied to the above-mentioned engine wake temperature field measuring device. The method for measuring an engine wake temperature field comprises:

[0016] Determine the position parameters of the measuring support based on the geometric center of the tail nozzle of the engine;

[0017] Based on the position parameters of the measured support, the first support assembly, the second support assembly, and the third support assembly are respectively adjusted to determine the position parameters of the first support assembly, the second support assembly, and the third support assembly;

[0018] The controller controls the driving rod to work, and the driving rod drives the first measuring piece and the second measuring piece to rotate respectively. The first measuring piece and the second measuring piece are both used to measure the engine wake temperature.

[0019] Compared with the prior art, the engine wake temperature field measuring device provided by the present invention has a controller which is electrically connected to the first support assembly, the second support assembly, the third support assembly, the first measuring piece, the second measuring piece, the driving rod and a plurality of temperature sensors respectively; the measuring support is fixedly connected to the first support assembly and the second support assembly respectively; the driving end of the driving rod is connected to the third support assembly; the output end of the driving rod overlaps with the geometric center of the measuring support; the output end of the driving rod is connected to the first measuring piece and the second measuring piece respectively; the driving rod drives the first measuring piece and the second measuring piece to rotate around the geometric center of the measuring support respectively; based on this, a plurality of temperature sensors are respectively arranged in the first measuring piece and the second measuring piece along the axial direction perpendicular to the measuring support; When the first measuring piece rotates and the second measuring piece rotates, temperature measurement parameters of hundreds or even more points on the same temperature section can be obtained. At the same time, the first support assembly and the second support assembly can drive the measurement support assembly to move, so as to realize temperature measurement of different sections of the engine wake temperature field and obtain temperature parameters of different dimensions. Therefore, the above-mentioned engine wake temperature field measurement device can obtain temperature parameters of different sections and dimensions of the engine wake temperature field, thereby increasing the measurement range of the engine wake temperature field. At the same time, based on the obtained temperature parameters of different sections and dimensions of the engine wake temperature field, the engine wake temperature field measurement is made more accurate, which effectively solves the problems of limited measurement range and low measurement accuracy in the prior art.

[0020] On this basis, the present invention also provides an engine wake temperature field measurement method, including the above-mentioned engine wake temperature field measurement device. Compared with the prior art, the beneficial effects of the engine wake temperature field measurement method provided by the present invention are the same as the beneficial effects of the engine wake temperature field measurement device described in the above-mentioned technical scheme, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A structural diagram of an engine wake temperature field measuring device according to an exemplary embodiment of the present invention is shown;

[0023] Figure 2 A structural diagram showing a measurement support according to an exemplary embodiment of the present invention;

[0024] Figure 3A side view of an engine wake temperature field measuring device according to an exemplary embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram showing the connection between the measuring support and the driving rod according to an exemplary embodiment of the present invention is shown;

[0026] Figure 5 A structural diagram showing a second support member of an exemplary embodiment of the present invention;

[0027] Figure 6 A flow chart of a method for measuring engine wake temperature field according to an exemplary embodiment of the present invention is shown.

[0028] Reference numerals:

[0029] 101-first support assembly, 102-second support assembly, 103-third support assembly, 104-measuring support member, 105-first measuring member, 106-second measuring member, 107-driving rod, 108-controller, 201-first limit member, 202-second limit member, 203-multiple temperature sensors, 301-first wiring harness, 302-second wiring harness, 401-sleeve gear, 402-motor gear, 501-bottom mounting edge, 502-adjusting member, 503-adjusting gasket, 504-tightening nut, 505-first fixing member. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The uniformity index of the temperature field distribution at the outlet of the engine combustion chamber is crucial to engine safety. Uneven temperature distribution at the outlet of the combustion chamber will lead to uneven wall temperature of components such as turbine high-pressure guide vanes, stator vanes or moving vanes in the flow channel at the rear of the combustion chamber, cracks in turbine components, local ablation, and even turbine blade ablation and fracture, resulting in engine failure. Due to the high temperature at the outlet of the combustion chamber, it is difficult to directly arrange temperature measurement points at the outlet of the combustion chamber or the position of the turbine high-pressure guide vane, and the service life of the sensor is reduced in a high temperature environment. Accurately measuring the outlet temperature of the combustion chamber and accurately analyzing the temperature field distribution have become research difficulties.

[0036] Researchers have proposed a variety of non-contact high-temperature measurement methods. By avoiding the high-temperature area near the combustion chamber outlet or the high-pressure turbine inlet, the airflow in the sub-high-temperature area behind the turbine is measured, and the temperature field distribution of the combustion chamber is evaluated by inversion after analyzing the measurement data. However, most of the existing test methods are fixed-section and fixed-point measurements, and the temperature data measured in a single test is relatively small. The wake temperature field constructed in this way has certain limitations and is not very accurate.

[0037] Therefore, how to design an engine wake temperature field measurement device with a wide measurement range and high accuracy is one of the important issues to be solved in this field.

[0038] Figure 1 The structure diagram of the engine wake temperature field measuring device according to the exemplary embodiment of the present invention is shown as follows: Figure 1As shown, an engine wake temperature field measuring device provided by an exemplary embodiment of the present invention includes a first support assembly 101, a second support assembly 102, a third support assembly 103, a measuring support member 104, a first measuring member 105, a second measuring member 106, a driving rod 107, a plurality of temperature sensors and a controller 108. The controller 108 is electrically connected to the first support assembly 101, the second support assembly 102, the third support assembly 103, the first measuring member 105, the second measuring member 106, the driving rod 107 and each temperature sensor, respectively. The measuring support member 104 is electrically connected to the first support assembly 101 and the second support assembly 106, respectively. The measuring support 102 is fixedly connected, the driving end of the driving rod 107 is connected to the third support assembly 103, the output end of the driving rod 107 overlaps with the geometric center of the measuring support 104, the output ends of the driving rod 107 are respectively connected to the first measuring member 105 and the second measuring member 106, the driving rod 107 respectively drives the first measuring member 105 and the second measuring member 106 to rotate around the geometric center of the measuring support 104, a plurality of temperature sensors are respectively arranged in the first measuring member 105 and the second measuring member 106 along the axial direction perpendicular to the measuring support, and the first measuring member 105 and the second measuring member 106 are both used to measure the engine wake temperature.

[0039] In a specific implementation, the controller 108 is electrically connected to the first support assembly 101, the second support assembly 102, the third support assembly 103, the first measuring piece 105, the second measuring piece 106, the driving rod 107 and a plurality of temperature sensors, respectively; the measuring support 104 is fixedly connected to the first support assembly 101 and the second support assembly 102, respectively; the driving end of the driving rod 107 is connected to the third support assembly 103; the output end of the driving rod 107 overlaps with the geometric center of the measuring support 104; the output end of the driving rod 107 is connected to the first measuring piece 105 and the second measuring piece 106, respectively; the driving rod 107 drives the first measuring piece 105 and the second measuring piece 106 to rotate around the geometric center of the measuring support 104, based on this; the plurality of temperature sensors are respectively arranged along the axial direction perpendicular to the measuring support 104. In the first measuring piece 105 and the second measuring piece 106, the first measuring piece 105 and the second measuring piece 106 can obtain temperature measurement parameters of hundreds of points or even more points in the same measurement section. At the same time, the first support assembly 101 and the second support assembly 102 can drive the measurement support 104 to move, so as to realize temperature measurement of different sections of the engine wake temperature field and obtain temperature parameters of different dimensions. Therefore, the above-mentioned engine wake temperature field measurement device can obtain temperature parameters of different sections and dimensions of the engine wake temperature field, thereby increasing the measurement range of the engine wake temperature field. At the same time, based on the obtained temperature parameters of different sections and dimensions of the engine wake temperature field, the engine wake temperature field measurement is made more accurate, which effectively solves the problems of limited measurement range and low measurement accuracy in the prior art.

[0040] In an alternative approach, Figure 2 A structural diagram of a measuring support according to an exemplary embodiment of the present invention is shown. Figure 2 As shown, the measuring support is a ring-shaped measuring support.

[0041] For example, Figure 2 As shown, the measuring support member 104 also includes a first limit member 201, a second limit member 202, an outer ring and a central support ring. The central support ring is sleeved on the output end of the driving rod. One end of the first limit member 201 is fixedly connected to the central support ring, one end of the second limit member 202 is fixedly connected to the central support ring, and the other end of the first limit member 201 and the other end of the second limit member 202 are both slidably connected to the outer ring.

[0042] In actual applications, the structure of the annular measuring support 104 is similar to a clock pointer structure, and the central support ring is sleeved on the output end of the driving rod. It can be understood that the central support ring is actually a sleeve with a hollow structure, and one end of the sleeve is connected to the output end of the driving rod by means of internal and external tooth meshing. The driving end of the driving rod rotates to drive the sleeve to rotate, and the rotation of the sleeve drives the first measuring piece 105 and the second measuring piece 106 to rotate in a specified direction, so that each temperature measuring point realizes the change of angle and displacement. Each temperature sensor is connected in series and is respectively arranged in the first measuring piece 105 and the second measuring piece 106. It can be understood that the first measuring piece 105 and the second measuring piece 106 are respectively designed with multiple temperature sensors 203, and the multiple temperature sensors 203 are arranged at equal intervals. The multiple temperature sensors 203 are connected in series and divided into two groups, which are respectively arranged in the first measuring piece 105 and the second measuring piece 106. When the driving rod drives the first measuring piece 105 and the second measuring piece 106 to rotate, the other end of the first measuring piece 105 and the other end of the second measuring piece 106 slide on the outer ring, and the outer ring is provided with a sliding wheel. The outer surface of the outer ring adopts a smooth curved surface design, which can realize obstacle-free rotation and sliding.

[0043] Exemplarily, the driving rod drives the first measuring piece 105 and the second measuring piece 106 to rotate 180° around the geometric center of the measuring support respectively. Under the action of the first stopper 201 and the second stopper 202, the first measuring piece 105 and the second measuring piece 106 can rotate up to 180°. Taking the first measuring piece 105 as an example, when the first measuring piece 105 rotates 180° clockwise and contacts the second stopper 202, the first measuring piece 105 cannot rotate at this time. After receiving the information that the first measuring piece 105 cannot rotate, the controller controls the output end of the driving rod to rotate counterclockwise. The first measuring piece 105 rotates 180° counterclockwise and contacts the first stopper 201. The above process is repeated repeatedly to complete the temperature sweep measurement on the same cross section. Each temperature sensor has N signal lines, which form a wiring harness, which effectively avoids the problem of downtime caused by the wiring harness of the temperature sensor during rotation.

[0044] Exemplarily, the geometric center of the measuring support and the geometric center of the engine tail nozzle are located on the same axis, so that the first measuring member and the second measuring member can ensure the precision and accuracy of the measurement during the rotation process, and the temperature parameters at different positions and angles of the same cross-section can be measured.

[0045] Exemplarily, the first support assembly 101, the second support assembly 102 and the third support assembly 103 move respectively along the downstream direction of the engine. Moving along the downstream direction of the engine can achieve measurement of different dimensions of the engine wake field temperature.

[0046] For example, Figure 3 A side view of an engine wake temperature field measuring device according to an exemplary embodiment of the present invention is shown. Figure 3 As shown, the first support assembly 101 includes a first driving mechanism, a first support member, a second support member and a first fixing member. The first driving mechanism is arranged at the sliding end of the first support member, the second support member is connected to the telescopic end of the first support member, the first fixing member is arranged on the second support member, and the first fixing member is used to fix the measuring support member 104.

[0047] In practical applications, the first support member is the main support structure, and a column structure is used for left and right side support. The first support member is connected to the base or workbench by welding or bolts to ensure the support strength. One end of the second support member is connected to the telescopic end of the first support member, and the other end of the second support member is connected to the first fixed member. On this basis, the end of the first support member connected to the base can slide, and a guide member with a guiding structure such as a slide groove and a guide rail is set on the side of the base or workbench that contacts the first support member. The controller is electrically connected to the first drive mechanism, and the controller is used to control the operation of the first drive mechanism, and the first drive mechanism drives the first support member to move along the engine's down-flight direction. At the same time, a first fixed member is provided at one end of the second support member connected to the first fixed member, and the first fixed member is used to fix the measurement support member 104. Adjusting the first support member and the second support member can adjust the height of the geometric center position of the measurement support member 104, ensuring that the geometric center of the measurement support member 104 and the geometric center of the engine tail nozzle are located on the same axis, ensuring that the above-mentioned engine wake temperature field measurement device can be applied to the tail temperature measurement of engines of different structural sizes.

[0048] Exemplarily, the second support assembly 102 includes a second driving mechanism, a third support member, a fourth support member and a second fixing member, the second driving mechanism is arranged at the sliding end of the third support member, the fourth support member is connected to the telescopic end of the third support member, the second fixing member is arranged on the fourth support member, and the second fixing member is used to fix the measuring support member 104.

[0049] In practical applications, the controller is electrically connected to the second drive mechanism, and the controller is used to control the operation of the second drive mechanism, and the second drive mechanism drives the third support member to move along the down-course direction of the engine. At the same time, a second fixing member is provided at one end of the fourth support member connected to the second fixing member, and the second fixing member is used to fix the measuring support member 104. Adjusting the third support member and the fourth support member can adjust the height of the geometric center position of the measuring support member 104, ensuring that the geometric center of the measuring support member 104 and the geometric center of the engine tail nozzle are located on the same axis, ensuring that the above-mentioned engine wake temperature field measurement device can be applied to the tail temperature measurement of engines of different structural sizes. It can be understood that the above-mentioned first support member and the third support member move synchronously, and the controller controls the first drive mechanism and the second drive mechanism to work simultaneously, which effectively avoids the problem of inaccurate measurement caused by the geometric center of the measuring support member 104 and the geometric center of the engine tail nozzle not being located on the same axis.

[0050] Exemplarily, the third support assembly 103 further includes a drive rod 107 bracket, a bracket base and a third drive mechanism. The third drive mechanism is electrically connected to the controller. It should be understood that the controller simultaneously controls the first drive mechanism, the second drive mechanism and the third drive mechanism to move along the downstream direction of the engine at the same time. The driving end of the drive rod 107 is connected to the rotating sleeve of the drive motor through internal and external gear meshing. The drive motor bracket is used to support the drive rod 107. The drive rod 107 can adopt a steel column or a steel frame structure. The bracket base and the bracket are connected by welding or bolts to ensure firm support.

[0051] Figure 4 FIG. 4 shows a schematic diagram of the connection between the measuring support and the driving rod according to an exemplary embodiment of the present invention. Figure 4 As shown, the measuring support is connected to the output end of the driving rod. It can be understood that the above-mentioned driving rod 107 is actually a driving sleeve, and the sleeve gear 401 and the motor gear 402 are meshed and connected to the measuring support. The sleeve is designed to be a steel structural member with a certain wall thickness. The portion where the sleeve is connected to the measuring support is provided with a harness outlet. The harness formed by each temperature sensor is led out from the harness outlet to form a first harness 301 and a second harness 302. The first harness 301 extends into the first measuring piece, and the second harness 302 extends into the second measuring piece. The first measuring piece and the second measuring piece are also provided with a smooth external protective shell. On this basis, the output end of the driving rod can also be understood as the end of the sleeve being designed with internal teeth for meshing with the external teeth of the rotating shaft of the driving motor rotating shaft, and the sleeve tight fitting surface is used to cooperate with the shaft shoulder at the end of the rotating shaft of the driving motor rotating shaft to ensure a tight connection between the two.

[0052] Figure 5 A structural diagram of a second supporting member of an exemplary embodiment of the present invention is shown, Figure 5 As shown, the second support member and the fourth support member both have an adjusting member 502, and the adjusting member 502 is respectively sleeved on the connecting end of the second support member and the connecting end of the fourth support member.

[0053] In actual applications, the second support member includes a tight nut 504, an adjusting gasket 503, an adjusting member 502, a bottom mounting edge 501 and a top mounting edge. The first fixing member 505 is arranged on the top mounting edge. The adjusting gasket 503 can be designed or selected from standard parts of different thicknesses for fine adjustment of the support height. The adjusting member 502 can be designed or selected from standard parts of the same height for adjusting the support height of the second support member. By adjusting the above two adjustment units at the same time, the height adjustment of the center position of the rotating measuring ring can be achieved, so that it can be used for the wake temperature measurement of engines of different structural sizes, and the center height of the engine can be aligned with the center height of the measuring support member, thereby increasing the applicability of the engine wake temperature field measurement device and saving scientific research time.

[0054] The exemplary embodiment of the present invention also provides a method for measuring the engine wake temperature field. Figure 6 A flow chart showing a method for measuring engine wake temperature field according to an exemplary embodiment of the present invention is shown. Figure 6 As shown, the engine wake temperature field measurement device is applied to the above-mentioned engine wake temperature field measurement method, which includes:

[0055] S601: Determine position parameters of a measurement support member based on a geometric center of an engine tail nozzle;

[0056] S602: adjusting the first support assembly, the second support assembly, and the third support assembly respectively based on the position parameters of the measured support member, and determining the position parameters of the first support assembly, the second support assembly, and the third support assembly;

[0057] S603: The controller controls the driving rod to work, and the driving rod drives the first measuring member and the second measuring member to rotate respectively. The first measuring member and the second measuring member are both used to measure the engine wake temperature.

[0058] Compared with the prior art, the beneficial effects of the engine wake temperature field measurement method provided by the present invention are the same as the beneficial effects of the engine wake temperature field measurement device described in the above technical solution, which will not be elaborated here.

[0059] Although the present invention has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present invention. Accordingly, this specification and the accompanying drawings are merely exemplary illustrations of the present invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is intended to include such modifications and variations if they fall within the scope of the claims of the present invention and their equivalents.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An engine wake temperature field measuring device, characterized in that: It comprises a first support assembly, a second support assembly, a third support assembly, a measuring support, a first measuring piece, a second measuring piece, a driving rod, a plurality of temperature sensors and a controller, wherein the controller is electrically connected to the first support assembly, the second support assembly, the third support assembly, the first measuring piece, the second measuring piece, the driving rod and the plurality of temperature sensors respectively, the measuring support is fixedly connected to the first support assembly and the second support assembly respectively, the driving end of the driving rod is connected to the third support assembly, the output end of the driving rod overlaps with the geometric center of the measuring support, the output end of the driving rod is connected to the first measuring piece and the second measuring piece respectively, the driving rod drives the first measuring piece and the second measuring piece to rotate around the geometric center of the measuring support respectively, the plurality of temperature sensors are respectively arranged in the first measuring piece and the second measuring piece along the axial direction perpendicular to the measuring support, and the first measuring piece and the second measuring piece are both used to measure the engine wake temperature; The measurement support is an annular measurement support; The measuring support member further comprises a first stopper, a second stopper, an outer ring and a central support ring, wherein the central support ring is sleeved on the output end of the driving rod, one end of the first stopper is fixedly connected to the central support ring, one end of the second stopper is fixedly connected to the central support ring, and the other end of the first stopper and the other end of the second stopper are both slidably connected to the outer ring; The geometric center of the measuring support and the geometric center of the engine tail nozzle are located on the same axis; The driving rod drives the first measuring piece and the second measuring piece to rotate 180° around the geometric center of the measuring support respectively. Under the action of the first limiter and the second limiter, the first measuring piece and the second measuring piece can rotate up to 180°. When the first measuring piece or the second measuring piece rotates 180° clockwise, the first measuring piece or the second measuring piece contacts the second limiter or the first limiter, and the first measuring piece or the second measuring piece cannot rotate. After receiving the information that the first measuring piece or the second measuring piece cannot rotate, the controller controls the output end of the driving rod to rotate counterclockwise, and the first measuring piece or the second measuring piece contacts the first limiter or the second limiter after rotating 180° counterclockwise. The above process is repeated repeatedly to complete the temperature sweep measurement on the same cross section. A plurality of temperature sensors are respectively designed on the first measuring piece and the second measuring piece. The plurality of temperature sensors are arranged at equal intervals. The plurality of temperature sensors are connected in series and divided into two groups, which are respectively arranged in the first measuring piece and the second measuring piece. The signal lines of each group of temperature sensors form a wiring harness.

2. The engine wake temperature field measuring device according to claim 1, characterized in that: The first support assembly, the second support assembly and the third support assembly respectively move along the downstream direction of the engine.

3. The engine wake temperature field measuring device according to claim 1, characterized in that: The first support assembly includes a first driving mechanism, a first support member, a second support member and a first fixing member. The first driving mechanism is arranged at the sliding end of the first support member. The second support member is connected to the telescopic end of the first support member. The first fixing member is arranged on the second support member. The first fixing member is used to fix the measuring support member.

4. The engine wake temperature field measuring device according to claim 3, characterized in that: The second support assembly includes a second driving mechanism, a third support member, a fourth support member and a second fixing member. The second driving mechanism is arranged at the sliding end of the third support member. The fourth support member is connected to the telescopic end of the third support member. The second fixing member is arranged on the fourth support member. The second fixing member is used to fix the measuring support member.

5. The engine wake temperature field measuring device according to claim 4, characterized in that: The second support member and the fourth support member both have an adjusting member, and the adjusting member is respectively sleeved on the connecting end of the second support member and the connecting end of the fourth support member.

6. A method for measuring engine wake temperature field, characterized in that: The engine wake temperature field measurement device according to any one of claims 1 to 5, wherein the engine wake temperature field measurement method comprises: Determining the position parameters of the measurement support based on the geometric center of the tail nozzle of the engine; respectively adjusting the first support assembly, the second support assembly, and the third support assembly based on the position parameters of the measurement support, and determining the position parameters of the first support assembly, the second support assembly, and the third support assembly; The controller controls the driving rod to work, and the driving rod drives the first measuring member and the second measuring member to rotate respectively. The first measuring member and the second measuring member are both used to measure the engine wake temperature.

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