A device for measuring the height of rotating detonation waves

Abstract

The present application provides a rotating detonation wave height measuring device, which belongs to the technical field of detonation wave testing, and specifically includes a combustion chamber outer ring, a combustion chamber inner ring, a front support plate, a sliding plate and a detection sensor. The combustion chamber outer ring and the combustion chamber inner ring are mounted on the front support plate, the combustion chamber outer ring surrounds the outer periphery of the combustion chamber inner ring, and the side wall of the combustion chamber outer ring is provided with a through groove extending along the axis direction of the combustion chamber outer ring. The sliding plate passes through the front support plate and enters the through groove. The sliding plate entering the through groove forms a closed annular structure with the side wall of the sliding plate corresponding to the combustion chamber outer ring. The sliding plate slides along the through groove, and the length of the sliding plate entering the through groove is adjusted. The detection sensor is mounted on one end of the sliding plate entering the through groove. Through the processing scheme of the present application, it is convenient to adjust the working length of the combustion chamber outer ring, and it is relatively convenient to obtain the shortest theoretical length of the engine under different working conditions and the detonation wave height under the corresponding working conditions.

Description

Technical Field

[0001] The present application relates to the field of detonation wave testing, and in particular to a rotating detonation wave height measuring device. Background Art

[0002] At present, the research on continuous rotating detonation engines has achieved many results and accumulated a lot of experience, but the problem of incomplete research on its controllability of combustion and variable thrust has been exposed, making the obstacles on the road to engineering more prominent. Overcoming the above key problems is more critical to its final application. The research on the minimum cross-section, shortest length, maximum specific impulse and minimum volume of the detonation combustion chamber has also begun to advance in full swing. It is a simple and feasible idea to study the detonation engine with the smallest size and simplest structure under the same performance.

[0003] Therefore, exploring the shortest length of the combustion chamber requires new ideas and methods, and exploring the shortest length requires understanding the maximum height of the rotating detonation wave in the combustion chamber. In the daily production and research and development stages, common measures are to modify the length of the existing combustion chamber or continuously change the position of the sensor measuring point. Continuously replacing the combustion chamber with a new configuration and size requires continuous processing and assembly, or modifying the existing combustion chamber. Whether it is replacing the combustion chamber with a new configuration and size or modifying the existing combustion chamber, there is a problem of relatively expensive time and labor costs. Summary of the invention

[0004] In view of this, the present application provides a rotating detonation wave height measuring device, which solves the problems in the prior art, facilitates the adjustment of the working length of the outer ring of the combustion chamber, and can more conveniently obtain the shortest theoretical length of the engine under different working conditions and the detonation wave height under the corresponding working conditions.

[0005] The present application provides a rotating detonation wave height measurement device that adopts the following technical solution:

[0006] A rotating detonation wave height measuring device comprises a combustion chamber outer ring, a combustion chamber inner ring, a front support plate, a sliding plate and a detection sensor, wherein the combustion chamber outer ring and the combustion chamber inner ring are mounted on the front support plate, the combustion chamber outer ring surrounds the outer circumference of the combustion chamber inner ring, a through groove extending along the axial direction of the combustion chamber outer ring is provided on the side wall of the combustion chamber outer ring, the sliding plate passes through the front support plate into the through groove, the sliding plate entering the through groove and the side wall of the combustion chamber outer ring corresponding to the sliding plate form a closed annular structure, the sliding plate slides along the through groove, and the length of the sliding plate entering the through groove is adjusted, and the detection sensor is mounted on one end of the sliding plate entering the through groove.

[0007] Optionally, the distance between the opposite side walls of the through groove gradually decreases from the outer side to the inner side of the outer ring of the combustion chamber, and the side wall of the sliding plate fits with the inner wall of the through groove.

[0008] Optionally, the height measuring device further comprises a control component, wherein the control component is mounted on the outer ring of the combustion chamber, and the control component controls the length of the sliding plate entering the through groove.

[0009] Optionally, the control assembly includes a mounting ring and a screw, the mounting ring being mounted on one end of the outer ring of the combustion chamber away from the front support plate, the mounting ring being consistent with the inner diameter of the outer ring of the combustion chamber, the outer wall of the mounting ring protruding from the outer wall of the outer ring of the combustion chamber, the screw passing through the sliding plate, the sliding plate and the screw being threadedly connected, one end of the screw being rotatably mounted on the mounting ring, and the other end of the screw extending to the side of the front support plate facing away from the mounting ring.

[0010] Optionally, an adjusting hand wheel is fixed to one end of the screw rod away from the mounting ring.

[0011] Optionally, the screw rod is threadedly connected with a nut between the sliding plate and the mounting ring.

[0012] Optionally, the through groove runs from one end of the combustion chamber outer ring to the other end.

[0013] Optionally, an open groove extending in a radial direction is provided on the front support plate, the open groove is connected to the through groove, the side wall of the open groove is in the same plane as the side wall of the through groove, and the bottom of the open groove is in contact with the inner wall of the sliding plate.

[0014] Optionally, the height measuring device further comprises a limit assembly, wherein the limit assembly is mounted on the front support plate or the outer ring of the combustion chamber, and the limit assembly is used to abut against the outer side wall of the sliding plate.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] The length of the sliding plate extending into the through groove is the effective length of the outer ring of the combustion chamber. In the present application, the sliding sliding plate can conveniently adjust the effective length of the outer ring of the combustion chamber, so as to explore the shortest length of the rotating detonation engine under different working conditions and the height of the rotating detonation wave. It is relatively convenient to obtain the shortest theoretical length of the engine under different working conditions and the detonation wave height under the corresponding working conditions, which is conducive to the progress of research and development work and the study of related mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the measuring device of this application;

[0019] Figure 2 This is a schematic diagram of a partial explosion structure of the measuring device of this application;

[0020] Figure 3 This is a cross-sectional view of the height measuring device of this application;

[0021] Figure 4 for Figure 3 Cross-sectional view along direction BB.

[0022] Explanation of the accompanying drawings: 1. Adjusting hand wheel; 2. Sliding plate; 21. First sliding bar; 22. Second sliding bar; 3. Screw; 4. Nut; 5. Mounting ring; 6. Inner ring of combustion chamber; 7. Pressure sensor; 8. External ring of combustion chamber; 9. Front support plate; 10. Through groove; 101. First groove; 102. Second groove; 103. Gap; 11. Boss; 12. Opening groove; 13. Limit block. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0025] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0028] An embodiment of the present application provides a rotating detonation wave height measurement device.

[0029] like Figure 1-3 As shown, a rotating detonation wave height measuring device comprises a combustion chamber outer ring 8, a combustion chamber inner ring 6, a front support plate 9, a sliding plate 2 and a detection sensor. The combustion chamber outer ring 8 and the combustion chamber inner ring 6 are mounted on the front support plate 9, the combustion chamber outer ring 8 surrounds the outer circumference of the combustion chamber inner ring 6, and the combustion chamber outer ring 8 and the combustion chamber inner ring 6 are concentrically arranged.

[0030] A through groove 10 is provided on the side wall of the outer ring 8 of the combustion chamber, and the extension direction of the through groove 10 is parallel to the axial direction of the outer ring 8 of the combustion chamber. The sliding plate 2 passes through the front support plate 9 and enters the through groove 10. The sliding plate 2 entering the through groove 10 and the side wall of the sliding plate 2 corresponding to the outer ring 8 of the combustion chamber forms a closed annular structure. The side wall of the sliding plate 2 is fitted with the inner wall of the through groove 10. The inner side of the sliding plate 2 is an arc surface, and the center of the arc surface is concentrically arranged with the axis of the outer ring of the combustion chamber, and the diameter of the arc surface is equal to the inner diameter of the outer ring of the combustion chamber. The sliding plate 2 slides along the through groove 10 to adjust the length of entering the through groove 10, and the detection sensor is installed on the end of the sliding plate 2 entering the through groove 10.

[0031] The inner side of the sliding plate 2 matches the inner wall of the outer ring 8 of the combustion chamber, and the length extended into the through groove 10 forms a complete closed ring with the part of the corresponding length of the outer ring 8 of the combustion chamber, that is, the effective outer ring 8 of the combustion chamber, the part of the through groove 10 that is not closed by the sliding plate 2 cannot form a complete ring structure with the side wall of the outer ring 8 of the combustion chamber on the side of the through groove 10. Therefore, the length of the sliding plate 2 extended into the through groove 10 is the effective length of the outer ring 8 of the combustion chamber. In the present application, the sliding sliding plate 2 can conveniently adjust the effective length of the outer ring 8 of the combustion chamber, so as to explore the shortest length of the rotating detonation engine under different working conditions and the height of the rotating detonation wave. It is relatively convenient to obtain the shortest theoretical length of the engine under different working conditions and the detonation wave height under the corresponding working conditions, which is conducive to the progress of research and development work and the study of related mechanisms.

[0032] In one embodiment, the cross-section of the sliding plate 2 along the radial direction of the combustion chamber outer ring 8 is T-shaped, the side facing the combustion chamber inner ring 6 is a first sliding bar 21, and the side facing the outside of the combustion chamber outer ring 8 is a second sliding bar 22. The width of the second sliding bar 22 is greater than the first sliding bar 21, and a T-shaped groove matching the T-shaped sliding plate 2 is provided on the side wall of the combustion chamber outer ring 8. The T-shaped groove is a first groove 101 close to the combustion chamber inner ring 6 and a second groove 102 close to the outside of the combustion chamber outer ring 8. The width of the second groove is greater than the width of the first groove 101. Gaps 103 connecting to the inside of the combustion chamber outer ring are provided on both sides of the first groove 101 (the bottom wall of the second groove), and the detection section of the detection sensor is aligned with the gap 103.

[0033] In one embodiment, a circumferentially distributed atomizing nozzles are provided on the front support plate 9 between the inner ring 6 of the combustion chamber and the outer ring 8 of the combustion chamber. The atomizing nozzles are connected to an external oil inlet line and can spray fuel into the inner ring of the combustion chamber. After adjusting the position of the sliding plate 2, the atomizing nozzles spray fuel and ignite within the effective range of the outer ring 8 of the combustion chamber for testing.

[0034] In one embodiment, the through groove 10 extends from one end of the combustion chamber outer ring 8 to the other end. In this way, a larger effective length of the combustion chamber outer ring 8 can be simulated. In other embodiments, the length of the through groove 10 can be set according to measurement needs, and the through groove 10 can be ensured to extend from the side where the combustion chamber outer ring 8 is connected to the front support plate 9.

[0035] In one embodiment, the detection sensor is a pressure sensor 7, which is always located within the effective length range of the combustion chamber outer ring 8. The pressure sensor 7 passes through the sliding plate and directly contacts the inner space of the combustion chamber outer ring 8, so as to measure the height of the detonation wave.

[0036] In one embodiment, the spacing between the opposite side walls of the through groove 10 gradually decreases from the outside to the inside of the combustion chamber outer ring 8. In this way, the sliding plate 2 is limited from moving toward the axis of the combustion chamber outer ring 8 on the through groove 10. Furthermore, the height measuring device also includes a limit assembly, which is installed on the front support plate 9 or the combustion chamber outer ring 8, and the limit assembly is used to abut the outer wall of the sliding plate 2. The movement of the sliding plate 2 away from the axis is limited by the limit assembly. In this way, the sliding plate 2 can be fixed and limited in the radial direction to ensure safety during the operation of the engine. Specifically, the limit assembly can be a limit block 13 installed on the front support plate 9 or the combustion chamber outer ring 8 to abut the outer wall of the sliding plate 2.

[0037] The height measuring device further comprises a control assembly, which is mounted on the combustion chamber outer ring 8 and controls the length of the sliding plate 2 entering the through slot 10. The control assembly can be a cylinder, whose telescopic shaft extends along the axis direction of the combustion chamber outer ring 8 and is connected to the sliding plate 2.

[0038] In one embodiment, the control assembly includes a mounting ring 5 and a screw 3, wherein the mounting ring 5 is mounted on one end of the combustion chamber outer ring 8 away from the front support plate 9, the inner diameter of the mounting ring 5 is consistent with the inner diameter of the combustion chamber outer ring 8, the outer side wall of the mounting ring 5 protrudes from the outer side wall of the combustion chamber outer ring 8, the screw 3 passes through the sliding plate 2, and the sliding plate 2 and the screw 3 are threadedly connected. One end of the screw 3 is rotatably mounted on the mounting ring 5, and the other end of the screw 3 extends to the side of the front support plate 9 facing away from the mounting ring 5. The screw 3 is rotated, and the screw 3 drives the sliding plate 2 to slide along the through groove 10, thereby adjusting the length of the sliding plate 2 in the through groove 10. The screw 3 should have a sufficient length on the side of the front support plate 9 facing away from the mounting ring 5, so that when a small length of the sliding plate 2 remains in the through groove 10, the screw 3 outside the through groove 10 can still expose the sliding plate 2, which is convenient for rotating the screw 3.

[0039] Among them, the connection method between the screw 3 and the mounting ring 5 can be: a rotating shaft passing through the mounting ring 5 is provided on the screw 3, and a radially protruding boss 11 is provided at the end of the rotating shaft away from the screw 3, and the boss 11 abuts against the outer edge of the through hole on the mounting ring 5 for the rotating shaft to pass through, thereby satisfying the rotation of the screw 3 and the mounting ring 5 while limiting the screw 3 from slipping out of the mounting ring 5.

[0040] An adjusting hand wheel 1 is fixed to one end of the screw rod 3 away from the mounting ring 5. The screw rod 3 can be conveniently rotated by adjusting the hand wheel 1.

[0041] The screw rod 3 is threadedly connected with a nut 4 between the sliding plate 2 and the mounting ring 5. After the position of the sliding plate 2 is adjusted, the nut 4 is rotated to abut against the mounting ring 5 to limit the rotation of the screw rod 3, stabilize the position of the sliding plate 2 during the test, and stabilize the effective length of the combustion chamber outer ring 8.

[0042] In one embodiment, the front support plate 9 is provided with an open groove 12 extending in the radial direction, the open groove 12 is connected to the through groove 10, the side wall of the open groove 12 is flush with the side wall of the through groove 10, and the groove bottom of the open groove 12 is in contact with the inner side wall of the sliding plate 2. The sliding plate 2 passes through the open groove and enters the through groove 10, and the open groove 12 is in contact with the three side walls of the sliding plate 2 to stabilize the sliding process of the sliding plate 2.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A rotating detonation wave height measuring device, characterized in that: It comprises a combustion chamber outer ring, a combustion chamber inner ring, a front support plate, a sliding plate and a detection sensor, wherein the combustion chamber outer ring and the combustion chamber inner ring are mounted on the front support plate, the combustion chamber outer ring surrounds the outer circumference of the combustion chamber inner ring, a through groove extending along the axial direction of the combustion chamber outer ring is provided on the side wall of the combustion chamber outer ring, the sliding plate passes through the front support plate and enters the through groove, the sliding plate entering the through groove and the side wall of the combustion chamber outer ring corresponding to the sliding plate form a closed annular structure, the sliding plate slides along the through groove, and the length of the sliding plate entering the through groove is adjusted, the detection sensor is mounted on one end of the sliding plate entering the through groove, and the detection sensor is a pressure sensor; The height measuring device further comprises a control component, which is mounted on the outer ring of the combustion chamber and controls the length of the sliding plate entering the through slot; The control assembly includes a mounting ring and a screw. The mounting ring is mounted on one end of the outer ring of the combustion chamber away from the front support plate. The mounting ring is consistent with the inner diameter of the outer ring of the combustion chamber. The outer wall of the mounting ring protrudes from the outer wall of the outer ring of the combustion chamber. The screw passes through the sliding plate. The sliding plate and the screw are threadedly connected. One end of the screw is rotatably mounted on the mounting ring, and the other end of the screw extends to the side of the front support plate facing away from the mounting ring.

2. The rotating detonation wave height measuring device according to claim 1, characterized in that: The distance between the opposite side walls of the through groove gradually decreases from the outer side to the inner side of the combustion chamber outer ring, and the side wall of the sliding plate is in contact with the inner side wall of the through groove.

3. The rotating detonation wave height measuring device according to claim 1, characterized in that: An adjusting hand wheel is fixed on one end of the screw rod away from the mounting ring.

4. The rotating detonation wave height measuring device according to claim 1, characterized in that: The screw rod is threadedly connected with a nut between the sliding plate and the mounting ring.

5. The rotating detonation wave height measuring device according to claim 1, characterized in that: The through groove penetrates from one end to the other end of the combustion chamber outer ring.

6. The rotating detonation wave height measuring device according to claim 1, characterized in that: The front support plate is provided with an open groove extending in a radial direction, the open groove is connected to the through groove, the side wall of the open groove is in the same plane as the side wall of the through groove, and the bottom of the open groove is in contact with the inner side wall of the sliding plate.

7. The rotating detonation wave height measuring device according to claim 2, characterized in that: The height measuring device further comprises a limit assembly, wherein the limit assembly is mounted on the front support plate or the outer ring of the combustion chamber, and the limit assembly is used for abutting against the outer side wall of the sliding plate.

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