Zero-pressure sideslip angle sensor
By incorporating a shaft plate that snaps into the inner wall of the air intake pipe and a heating element on the bottom plate of the air chamber in the zero-pressure sideslip angle sensor, the problems of low sensor accuracy and short lifespan are solved, achieving high-precision and long-life measurement results, making it suitable for high-performance aircraft.
Patent Information
- Application Number
- CN202423297601.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing sideslip angle sensors have low testing accuracy, narrow measurement range, and short lifespan, which cannot meet the flight requirements of high-performance aircraft over a wide angle range.
A zero-pressure sideslip angle sensor was designed. By setting a shaft plate on the central axis of the intake pipe and engaging it with the inner wall of the intake pipe, combined with the heating element on the bottom plate of the air chamber, icing is prevented, thereby improving measurement accuracy and service life.
It improves the measurement accuracy and lifespan of the sensor, ensures operation at suitable temperatures, prevents icing from affecting sensor rotation, and meets the flight requirements of high-performance aircraft.
Smart Images
Figure CN223756027U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to sensor technical field, concretely relates to a zero pressure formula sideslip angle sensor. BACKGROUND
[0002] Sideslip angle is the angle between the symmetry plane of the aircraft and the direction of the relative airflow, and is an important state parameter of the flight mechanics of the aircraft. At present, sideslip angle sensors can be divided into mechanical type and aerodynamic type. The mechanical type mainly uses the angle of rotation of a probe to obtain the size of the sideslip angle, including a wind vane type sensor and a zero pressure difference type sensor. The aerodynamic type obtains sideslip angle information through pressure information measured during flight, including a differential pressure ratio sensor.
[0003] With the continuous development of aviation technology, the measurement of sideslip angle plays an important role. Advanced high-performance aircraft need to be able to fly in a larger angle range, and have higher requirements for working conditions, cost and maintenance. Therefore, the current measurement of sideslip angle sensors still cannot meet the demand. INVENTION CONTENTS
[0004] The technical problem solved by the utility model is to provide a zero pressure type sideslip angle sensor, which solves the problems of low test precision, narrow measurement range and low service life of the existing sideslip angle sensor.
[0005] The technical solution of the utility model is that the utility model provides a zero pressure type sideslip angle sensor, which comprises an air inlet pipe, an air chamber and a Hall element, the air inlet pipe is connected with the air chamber, and the Hall element is arranged on the side close to the air chamber.
[0006] An axle plate is arranged on the central axis of the air inlet pipe, the axle plate divides the air inlet pipe into a first air inlet pipe and a second air inlet pipe, and the axle plate is clamped with the inner wall of the air inlet pipe.
[0007] A heating element is arranged on the bottom plate of the air chamber away from the air inlet pipe, and the heating element is arranged on the side close to the Hall element.
[0008] Further, a sealing sleeve is arranged at the end connected with the air chamber of the air inlet pipe, the sealing sleeve is detachably connected with the air inlet pipe, a top ring is arranged at the end connected with the air inlet pipe of the air chamber, the top ring is fixedly connected with the air chamber, and the sealing sleeve is rotatably connected with the top ring.
[0009] Further, an annular side plate is arranged on the side close to the top ring of the sealing sleeve, the annular side plate is arranged on the inner wall of the sealing sleeve, an annular groove is arranged on the side close to the sealing sleeve of the top ring, and the annular side plate is matched with the annular groove.
[0010] Further, a group of first bosses are symmetrically arranged along the axis at one end of the shaft plate close to the air chamber, and a group of second bosses are symmetrically arranged along the axis at one end of the shaft plate away from the air chamber, a group of first grooves are arranged on the air inlet pipe corresponding to the positions of the first bosses, the first bosses are clamped with the first grooves, and a group of second grooves are arranged on the air inlet pipe corresponding to the positions of the second bosses, the second bosses are clamped with the second grooves.
[0011] Further, a first air inlet and a second air inlet are arranged at one end of the air inlet pipe away from the air chamber, the first air inlet and the second air inlet are arranged on the side wall of the air inlet pipe, and the first air inlet and the second air inlet are symmetrically arranged along the shaft plate.
[0012] Further, the zero-pressure side slip angle sensor further comprises a first cavity, the Hall element is arranged in the first cavity, the first cavity is separated from the air chamber through the bottom plate, the heating element is arranged in the first cavity and is detachably connected with the bottom plate, and the heating element is an annular heating film.
[0013] Further, the zero-pressure side slip angle sensor further comprises an air pipe, the air pipe comprises a top cover, an outer shell, a first inner pipe and a second inner pipe, the top cover is fixedly connected with the shaft plate, the first inner pipe and the second inner pipe are arranged in the outer shell, first and second through holes are arranged on the top cover and are symmetrically arranged along the shaft plate, the first through hole is connected with the first inner pipe, and the second through hole is connected with the second inner pipe.
[0014] Further, a first air outlet hole is arranged on the outer shell close to the shaft plate, a second air outlet hole is arranged on the outer shell away from the shaft plate, the first air outlet hole is connected with the first inner pipe, the second air outlet hole is connected with the second inner pipe, and the length of the first inner pipe is less than the length of the second inner pipe.
[0015] Further, the air pipe is rotationally connected with the air chamber through a bearing, and the bearing is arranged at one end close to the top cover.
[0016] Further, the air chamber comprises a partition, a first air chamber and a second air chamber, the partition separates the first air chamber and the second air chamber, a mounting groove is arranged on the central axis of the partition, the air pipe is arranged in the mounting groove, a third through hole is arranged on the mounting groove corresponding to the position of the first air outlet hole, the third through hole is connected with the first air chamber, a fourth through hole is arranged on the mounting groove corresponding to the position of the second air outlet hole, and the fourth through hole is connected with the second air chamber.
[0017] The utility model discloses beneficial effect is: the utility model discloses a shaft plate is established on the middle axis of air inlet pipe, and the inner wall of air inlet pipe is connected with the shaft plate, prevents the measurement error caused by the non-synchronous rotation of shaft plate and air inlet pipe, and heating piece is established on the bottom plate of air chamber, and the freezing on the surface of zero pressure type side slip angle sensor is removed by heating the shell, prevents the rotation between shaft plate, air inlet pipe, sealing sleeve and top ring from being affected by freezing, improves the measurement accuracy of sensor, guarantees the operation of sensor under the suitable temperature, improves the service life of sensor. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.
[0019] Figure 1 A structure diagram of zero pressure type side slip angle sensor provided by the embodiment of the present application is provided.
[0020] Figure 2 A structure diagram of zero pressure type side slip angle sensor provided by the embodiment of the present application is provided. Figure 1 A-A' section schematic view.
[0021] Figure 3 A structure diagram of zero pressure type side slip angle sensor provided by the embodiment of the present application is provided. Figure 1 B-B' section schematic view
[0022] Figure 4 A structure diagram of zero pressure type side slip angle sensor provided by the embodiment of the present application is provided. Figure 1 Middle air inlet pipe and shaft plate section structure schematic view.
[0023] Explanation of reference signs:
[0024] 1-air inlet pipe, 2-ventilation pipe, 3-air chamber, 4-first cavity;
[0025] 11-shaft plate, 12-first air inlet pipe, 13-second air inlet pipe, 14-first air inlet, 15-second air inlet, 16-sealing ring, 17-first recess, 18-second recess, 21-first ventilation pipe, 22-second ventilation pipe, 23-first through hole, 24-second through hole, 25-first air outlet hole, 26-second air outlet hole, 27-bearing, 31-top ring, 32-first air chamber, 33-second air chamber, 34-bottom plate, 35-separating piece, 41-Hall element, 42-heating piece;
[0026] 111-first boss, 112-second boss. DETAILED DESCRIPTION
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] In this invention, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0029] The implementation of this utility model will be described in detail below with reference to the specific accompanying drawings:
[0030] Figure 1 This is a schematic diagram of a zero-pressure sideslip angle sensor structure provided in this embodiment. Figure 2 for Figure 1 A-A' direction cross-sectional diagram, combined with Figure 1 and Figure 2 The zero-pressure sideslip angle sensor includes: an air inlet pipe 1, an air vent pipe 2, an air chamber 3, and a first cavity 4. The air inlet pipe 1 and the air vent pipe 2 are connected, the air vent pipe 2 is rotatably connected to the air chamber 3, and the first cavity 4 is connected to the air chamber 3.
[0031] A shaft plate 11 is provided on the central axis of the intake pipe 1. The shaft plate divides the intake pipe 1 into a first intake pipe 12 and a second intake pipe 13. The shaft plate 11 is engaged with the inner wall of the intake pipe 1 to prevent measurement errors caused by asynchronous rotation of the shaft plate and the intake pipe. A first air inlet 14 and a second air inlet 15 are provided at the end of the intake pipe 1 away from the air chamber 2. The first air inlet 14 and the second air inlet 15 are both provided on the side wall of the intake pipe 1. The first air inlet 14 and the second air inlet 15 are symmetrically arranged along the shaft plate. In this embodiment, the first air inlet 14 and the second air inlet 15 are both a set of rectangular air inlets, and the first air inlet 14 and the second air inlet 15 are provided on the same surface of the outer wall.
[0032] The air inlet pipe 1 is connected to the air chamber 3 at one end with a sealing sleeve 16 and a top ring 31. The sealing ring 16 is detachably connected to the air inlet pipe 1, and the top ring 31 is fixed to the upper part of the air chamber 3. The sealing ring 16 and the top ring 31 are rotatably connected. The inner wall of the sealing ring 16 is provided with an annular side plate, and the side of the top ring 31 near the sealing ring 16 is provided with an annular groove. The annular side plate and the annular groove cooperate to form a waterproof labyrinth structure, which effectively prevents water mist from entering the shaft and affecting the internal circuit structure of the sensor. During the operation of the sensor, the sealing ring 16 and the air inlet pipe 1 rotate, while the top ring 31 and the air chamber 3 do not rotate.
[0033] The ventilation pipe 2 comprises a top cover, an outer shell, a first inner pipe 21 and a second inner pipe 22, the first inner pipe 21 and the second inner pipe 22 are arranged in the outer shell, the length of the first inner pipe 21 is greater than the length of the second inner pipe 22, the top cover of the ventilation pipe 2 is fixedly connected with the shaft plate 11, the top cover is provided with a first through hole 23 and a second through hole 24, the first through hole 23 and the second through hole 24 are symmetrical about the shaft plate 11, the outer wall of the ventilation pipe 2 is provided with a first gas outlet hole 25 near one side of the shaft plate 11, the outer wall of the ventilation pipe 2 is provided with a second gas outlet hole 26 away from the other side of the shaft plate 11, the first inner pipe 21 is connected with the first through hole 23 and the first gas outlet hole 25 respectively, the second inner pipe 22 is connected with the second through hole 24 and the second gas outlet hole 26 respectively, and the gas in the first gas inlet pipe 12 and the second gas inlet pipe 13 is respectively conveyed into the gas chamber 3.
[0034] The gas chamber 3 comprises a first gas chamber 32 and a second gas chamber 33, the gas is sent into the first gas chamber 32 through the first gas inlet pipe 12 and the first inner pipe 21, and the gas is sent into the second gas chamber 33 through the second gas inlet pipe 13 and the second inner pipe 22, the first inner pipe 21 and the second inner pipe 22 have a length difference, so that the first gas chamber 32 and the second gas chamber 33 have a pressure difference, thereby driving the gas inlet pipe 1 and the ventilation pipe 2 to rotate.
[0035] The gas chamber 3 comprises a partition 35, the partition 35 separates the first gas chamber 32 and the second gas chamber 33, the center axis of the partition 35 is provided with a mounting groove, the ventilation pipe 3 is inserted into the mounting groove of the partition 35, the mounting groove is provided with a third through hole corresponding to the position of the first gas outlet hole 25, the third through hole is connected with the first gas chamber 32, and the mounting groove is provided with a fourth through hole corresponding to the position of the second gas outlet hole 26, the fourth through hole is connected with the second gas chamber 33. The gas in the first inner pipe 21 is conveyed into the first gas chamber 32 through the third through hole and the first gas outlet hole 25, and the gas in the second inner pipe 22 is conveyed into the second gas chamber 33 through the fourth through hole and the second gas outlet hole 26.
[0036] The ventilation pipe 2 is provided with a bearing 27 at the connecting end of the ventilation pipe 2 and the gas chamber 3, the bearing 27 reduces the friction between the ventilation pipe 2 and the gas chamber 3, and improves the measurement accuracy of the sensor.
[0037] The gas chamber 3 is provided with a bottom plate 34 at the connecting side of the gas chamber 3 and the first cavity 4, the first cavity 4 is provided with a circuit board 41 of a Hall element, as shown in Figure 3 The side of the bottom plate 34 close to the Hall element 41 is provided with a heating element 42, the heating element 42 is an annular heating film, the heating film can be a graphite heating film, the heating removes the icing on the surface of the zero-pressure type side slip angle sensor, so that the circuit board works at a suitable temperature, and prevents the icing from affecting the rotation of the gas inlet pipe 1 and the ventilation pipe 2.
[0038] As shown in Figure 4As shown, the clamping of the shaft plate 11 and the inner wall of the air inlet pipe specifically comprises: a set of first bosses 111 are symmetrically arranged on the end of the shaft plate 11 close to the air chamber 3 along the axis, a set of second bosses 112 are symmetrically arranged on the end of the shaft plate 11 away from the air chamber 3 along the axis, a set of first grooves 17 are arranged on the inner wall of the air inlet pipe corresponding to the positions of the first bosses 111, the first bosses 111 are clamped with the first grooves 17, a set of second grooves 18 are arranged on the inner wall of the air inlet pipe corresponding to the positions of the second bosses 112, the second bosses 112 are clamped with the second grooves 18, and the clamping structure is arranged to prevent the shaft plate 11 from sliding with the inner wall of the air inlet pipe.
[0039] Obviously, the above only preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can be made various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application are described in more detail, the present application is not limited to the above embodiments, without departing from the concept of the present application, it can also include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.
[0040] Note that in the description of the present specification, the description referring to the terms "some embodiments", "other embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. A zero voltage side slip angle sensor characterized by, The zero-pressure side slip angle sensor comprises an air inlet pipe, an air chamber and a Hall element, the air inlet pipe is connected with the air chamber, and the Hall element is arranged on one side close to the air chamber; An axial plate is arranged on the central axis of the air inlet pipe, the axial plate divides the air inlet pipe into a first air inlet pipe and a second air inlet pipe, and the axial plate is clamped with the inner wall of the air inlet pipe; A heating element is arranged on the bottom plate of the air chamber away from the air inlet pipe, and the heating element is arranged on one side close to the Hall element.
2. A zero voltage side slip angle sensor as claimed in claim 1, characterized in that A sealing sleeve is arranged on the end of the air inlet pipe connected with the air chamber, the sealing sleeve is detachably connected with the air inlet pipe, a top ring is arranged on the end of the air chamber connected with the air inlet pipe, the top ring is fixedly connected with the air chamber, and the sealing sleeve is rotatably connected with the top ring.
3. A zero voltage side slip angle sensor as claimed in claim 2, characterised in that, An annular side plate is arranged on one side of the sealing sleeve close to the top ring, the annular side plate is arranged on the inner wall of the sealing sleeve, an annular groove is arranged on one side of the top ring close to the sealing sleeve, and the annular side plate is matched with the annular groove.
4. A zero voltage side slip angle sensor as claimed in claim 1, wherein, A group of first bosses are symmetrically arranged on one end of the axial plate close to the air chamber along the axis, a group of second bosses are symmetrically arranged on the other end of the axial plate away from the air chamber along the axis, a group of first grooves are arranged on the air inlet pipe corresponding to the positions of the first bosses, the first bosses are clamped with the first grooves, and a group of second grooves are arranged on the air inlet pipe corresponding to the positions of the second bosses, the second bosses are clamped with the second grooves.
5. A zero voltage side slip angle sensor as claimed in claim 4, characterised in that, A first air inlet and a second air inlet are arranged on one end of the air inlet pipe away from the air chamber, the first air inlet and the second air inlet are arranged on the side wall of the air inlet pipe, and the first air inlet and the second air inlet are symmetrically arranged along the axial plate.
6. A zero voltage sideslip angle sensor as claimed in claim 1, characterized in that The zero-pressure side slip angle sensor further comprises a first cavity, the Hall element is arranged in the first cavity, the first cavity is separated from the air chamber through the bottom plate, the heating element is arranged in the first cavity and detachably connected with the bottom plate, and the heating element is an annular heating film.
7. A zero voltage side slip angle sensor as claimed in claim 1, wherein, The zero-pressure side slip angle sensor further comprises an air pipe, the air pipe comprises a top cover, an outer shell, a first inner pipe and a second inner pipe, the top cover is fixedly connected with the axial plate, the first inner pipe and the second inner pipe are arranged in the outer shell, first and second through holes are arranged on the top cover, the first and second through holes are symmetrically arranged along the axial plate, the first through hole is connected with the first inner pipe, and the second through hole is connected with the second inner pipe.
8. A zero voltage side slip angle sensor as claimed in claim 7, characterised in that, A first air outlet hole is arranged on the outer shell close to the axial plate, a second air outlet hole is arranged on the other end of the outer shell away from the axial plate, the first air outlet hole is connected with the first inner pipe, the second air outlet hole is connected with the second inner pipe, and the length of the first inner pipe is smaller than the length of the second inner pipe.
9. A zero voltage side slip angle sensor as claimed in claim 8, characterised in that, The air pipe is rotatably connected with the air chamber through a bearing, and the bearing is arranged on one end close to the top cover.
10. A zero voltage side slip angle sensor as claimed in claim 9, characterised in that, The air chamber comprises a partition, a first air chamber and a second air chamber, the partition separates the first air chamber and the second air chamber, a mounting groove is arranged on the central axis of the partition, the air pipe is arranged in the mounting groove, a third through hole is arranged at the position corresponding to the first air outlet hole of the mounting groove, the third through hole is connected with the first air chamber, a fourth through hole is arranged at the position corresponding to the second air outlet hole of the mounting groove, and the fourth through hole is connected with the second air chamber.