Axial-flow type engine deflation mechanism
By designing an axial flow engine exhaust mechanism integrating a gas discharge device, an air-controlled pipeline, an electronically controlled valve and an induction control unit ECU, the problem of complex structure of the exhaust mechanism in the prior art is solved. The problem of the gas discharge mechanism being complex and the inability to accurately control gas emissions is solved. , achieves the effect of simplified structure and precise control.
Patent Information
- Application Number
- CN202421261664.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing axial flow engine deflation mechanism has a complex structure and cannot accurately control gas emissions, which increases the difficulty of the engine's maintenance and manufacturing cost.
A deflation mechanism including a deflation device, an air-controlled pipeline, an electronically controlled valve and an induction control unit ECU is designed. The deflation device is opened or closed by the axial flow engine's own air pressure, and through the pressure sensor and the ECU Accurately control the deflation time.
The structure of the exhaust device is simplified, precise control of gas emissions is achieved, and the maintenance difficulty and manufacturing cost of the engine are reduced.
Smart Images
Figure CN222457532U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an axial flow engine air release mechanism, belonging to the technical field of axial flow engine air pressure control. Background Art
[0002] Axial-flow engines are widely used in various industrial and civil fields, such as aviation, navigation, and electricity. When the axial-flow engine is started or the air pressure is unstable during operation, the excess gas needs to be discharged from the engine to maintain the normal operation and performance of the engine. However, the existing bleed mechanism is often complex in structure, and a special propulsion cylinder (such as an electric cylinder, a hydraulic cylinder, or a cylinder) is required to push the opening and closing of the exhaust gas path, and the gas discharge cannot be accurately controlled, which undoubtedly increases the maintenance difficulty and manufacturing cost of the engine. Therefore, it is necessary to develop a new type of axial-flow engine bleed mechanism to solve the above problems. Utility Model Content
[0003] The technical problem to be solved by the utility model is: how to provide an air release mechanism for an axial flow engine which has a simple structure and can accurately control the discharge according to the change of air pressure.
[0004] In view of the above problems, the technical solution proposed by the utility model is:
[0005] An axial flow engine air release mechanism comprises an air release device, an air control pipeline, an electric control valve and an inductive control unit ECU, wherein the air release device comprises a cylinder body, a piston and a return spring, wherein the piston is located in the cylinder cavity of the cylinder body, and divides the cylinder cavity into an upper cavity and a lower cavity, and an exhaust hole leading to the cylinder cavity is provided on the side wall of the lower cavity, and the cylinder body is mounted on the air pressure part housing of the axial flow engine, and the bottom thereof is provided with an air release flow passage connecting the cylinder cavity with the inner cavity of the air pressure part housing, and the return spring is supported between the bottom of the cylinder cavity and the piston in the lower cavity, and can push the piston upward away from the lower cavity; one end of the air control pipeline is connected to the upper cavity of the cylinder body, and the other end is connected to the combustion chamber, and the electric control valve is a two-position three-way valve, which is arranged on the air control pipeline, and the inductive control unit ECU has a pressure sensor for sensing the air pressure in the combustion chamber, and can control the opening and closing of the electric control valve according to the data transmitted by the pressure sensor.
[0006] The cylinder body is divided into an upper cylinder body and a lower cylinder body, and the upper cylinder body and the lower cylinder body are fastened and connected by bolts.
[0007] The piston is a hollow shell-shaped body with an opening facing downward.
[0008] A spring sleeve with an opening facing downward is arranged at the center of the bottom surface of the piston, and the upper end of the return spring is installed in the spring seat.
[0009] A spring seat is arranged at the center of the bottom of the cylinder cavity, and the lower end of the return spring is installed in the spring seat.
[0010] The gas control pipeline is divided into a forward gas control pipeline and a bidirectional gas control pipeline. The forward gas control pipeline is located between the electric control valve and the combustion chamber, and the bidirectional gas control pipeline is located between the electric control valve and the upper chamber of the cylinder body. The gas in the upper chamber can be discharged from the electric control valve through the bidirectional gas control pipeline.
[0011] The electric control valve comprises an internal air passage, an external channel one, an external channel two and an external channel three. The outer end of the external channel one is connected to a forward air control pipeline, the outer end of the external channel two is connected to the outside world, and the outer end of the external channel three is connected to a bidirectional air control pipeline. The two ends of the internal air passage are a fixed end and a transposition end respectively. The fixed end is always connected to the inner end of the external channel three, and the transposition end can be alternately connected to the inner end of the external channel one and the inner end of the external channel two. When the electric control valve is opened, the transposition end of the internal air passage is connected to the inner end of the external channel one, and when the electric control valve is closed, the transposition end is connected to the inner end of the external channel two.
[0012] The electrically controlled valve is a solenoid valve.
[0013] Beneficial effects: The air pressure of the axial flow engine can be used to open or close the air release device, without the need to add a propulsion cylinder device, thereby simplifying the structure of the air release device; at the same time, a pressure sensor is used to sense the air pressure change in the combustion chamber, and the air release time can be accurately controlled through the sensing control unit ECU (8), thereby achieving accurate control of the air release amount. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a three-dimensional schematic diagram of the air release device;
[0015] Figure 2 is a schematic cross-sectional view of the axial flow engine air bleed mechanism, showing the air bleed mechanism in a bleed state;
[0016] Figure 3 is a schematic cross-sectional view of the axial flow engine air bleed mechanism, in which the air bleed mechanism is shown in a closed state;
[0017] Figure 4 is a schematic diagram of the electrically controlled valve in a closed state;
[0018] Figure 5 2 is a schematic diagram showing the electric control valve in an open state.
[0019] In the figure: 1. exhaust device; 2. cylinder body; 201. upper cylinder body; 202. lower cylinder body; 2021. spring seat; 3. cylinder cavity; 301. upper chamber; 302. lower chamber; 303. exhaust hole; 4. piston; 401. spring sleeve; 5. return spring; 6. air control pipeline; 601. forward air control pipeline; 602. two-way air control pipeline; 7. electric control valve; 701. external channel one; 702. external channel two; 703. external channel three; 704. internal air passage; 7041. fixed end; 7042. transposition end; 8. induction control unit ECU; 801. pressure sensor; 9. exhaust flow passage; 10. air pressure part shell; 11. combustion chamber. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings:
[0021] like Figure 1As shown in FIG. 3 , an axial flow engine air release mechanism comprises an air release device 1, an air control pipeline 6, an electric control valve 7 and an induction control unit ECU 8. The air release device 1 comprises a cylinder body 2, a piston 4 and a return spring 5. The piston 4 is located in a cylinder cavity 3 of the cylinder body 2, and the cylinder cavity 3 is divided into an upper cavity 301 and a lower cavity 302. An exhaust hole 303 leading to the cylinder cavity 3 is opened on the side wall of the lower cavity 302. The cylinder body 2 is mounted on the air pressure part housing 10 of the axial flow engine, and its bottom has a connection between the cylinder cavity 3 and the air pressure part housing 10. The exhaust passage 9 of the chamber, the return spring 5 is supported between the bottom of the cylinder chamber 3 and the piston 4 in the lower chamber 302, and can push the piston 4 upward away from the lower chamber 302; one end of the air control line 6 is connected to the upper chamber 301 of the cylinder body 2, and the other end is connected to the combustion chamber 11. The electric control valve 7 is a two-position three-way valve, which is arranged on the air control line 6. The sensing control unit ECU8 has a pressure sensor 801 for sensing the air pressure of the combustion chamber 11, and can control the opening and closing of the electric control valve 7 according to the data transmitted by the pressure sensor 801. When the axial flow engine is operating normally, the sensing control unit ECU8 controls the electric control valve 7 to open, and the high-pressure airflow in the combustion chamber enters the upper chamber 301 of the cylinder chamber 3 through the air control line 6. The strong pressure makes the piston 4 overcome the resistance of the return spring 5 and go down to the lower chamber 302 to block the exhaust hole 303, preventing the exhaust device 1 from exhausting. When the axial flow engine is started or encounters unstable air pressure (sensed by the pressure sensor 801) during operation and needs to be deflated, the sensing control unit ECU8 controls the electric control valve 7 to close, the reset spring 5 pushes the piston away from the lower chamber 302, and the gas in the upper chamber 301 reversely enters the electric control valve 7 and is discharged from the electric control valve 7, and the air flow in the inner cavity of the air pressure part shell 10 is discharged outward through the deflation channel 9, the lower chamber 302, and the exhaust hole 303. In this way, the deflation device 1 uses the axial flow engine's own air pressure to realize the opening or closing of the deflation device 1, without the need to add a propulsion cylinder device, which simplifies the structure of the deflation device 1; at the same time, the pressure sensor 801 is used to sense the air pressure changes in the combustion chamber 11, and the deflation time can be accurately controlled through the sensing control unit ECU8, thereby realizing accurate control of the deflation volume.
[0022] like Figure 2 As shown in FIG. 5 , the above-mentioned gas control pipeline 6 is divided into a forward gas control pipeline 601 and a two-way gas control pipeline 602. The forward gas control pipeline 601 is located between the electric control valve 7 and the combustion chamber, and the two-way gas control pipeline 602 is located between the electric control valve 7 and the upper chamber 301 of the cylinder body 2. The gas in the upper chamber 301 can be discharged from the electric control valve 7 in the reverse direction through the two-way gas control pipeline 602.
[0023] The above-mentioned electric control valve 7 has an internal air passage 704, an external channel one 701, an external channel two 702 and an external channel three 703. The outer end of the external channel one 701 is connected to the forward air control pipeline 601, the outer end of the external channel two 702 is connected to the outside, and the outer end of the external channel three 703 is connected to the bidirectional air control pipeline 602. The two ends of the internal air passage 704 are a fixed end 7041 and a transposition end 7042 respectively. The fixed end 7041 is always connected to the inner end of the external channel three 703, and the transposition end 7042 can be alternately connected to the inner end of the external channel one 701 and the inner end of the external channel two 702. When the electric control valve 7 is opened, the transposition end 7042 of the inner air passage 704 is connected with the inner end of the external channel 1 701, so that the air control pipeline 6 is unobstructed as a whole, and the high-pressure gas in the combustion chamber enters the upper chamber 301 of the cylinder cavity 3 through the air control pipeline 6; when the electric control valve 7 is closed, the transposition end 7042 is connected with the inner end of the external channel 2 702, and the gas in the upper chamber 301 of the cylinder cavity 3 is discharged to the outside through the two-way air control pipeline 602, the inner air passage 704, and the external channel 2 702.
[0024] Preferably, the electrically controlled valve 7 is a solenoid valve.
[0025] like Figure 1 As shown, in order to facilitate the manufacture and assembly of the internal components of the cylinder cavity 3, the cylinder body 2 is divided into an upper cylinder body and a lower cylinder body 202, and the upper cylinder body 201 and the lower cylinder body 202 are fastened together by bolts.
[0026] The piston 4 is a hollow shell-like body with an opening facing downward, so as to save materials and reduce weight.
[0027] A spring sleeve 401 with an opening facing downward is provided at the center of the bottom surface of the piston 4 , and the upper end of the return spring 5 is installed in the spring seat 2021 for guiding the expansion and contraction direction of the return spring 5 .
[0028] A spring seat 2021 is provided at the center of the bottom of the cylinder cavity 3 , and the lower end of the return spring 5 is installed in the spring seat 2021 .
[0029] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.
Claims
1. An axial flow engine air bleed mechanism, characterized in that: The invention comprises an air release device (1), an air control pipeline (6), an electric control valve (7) and an induction control unit ECU (8). The air release device (1) comprises a cylinder body (2), a piston (4) and a return spring (5). The piston (4) is located in a cylinder cavity (3) of the cylinder body (2), dividing the cylinder cavity (3) into an upper cavity (301) and a lower cavity (302). An exhaust hole (303) leading to the cylinder cavity (3) is provided on the side wall of the lower cavity (302). The cylinder body (2) is mounted on a pneumatic housing (10) of an axial flow engine, and has an air release hole at its bottom that connects the cylinder cavity (3) with the inner cavity of the pneumatic housing (10). The return spring (5) is supported between the bottom of the cylinder chamber (3) and the piston (4) in the lower chamber (302), and can push the piston (4) upward away from the lower chamber (302); one end of the air control pipeline (6) is connected to the upper chamber (301) of the cylinder body (2), and the other end is connected to the combustion chamber (11); the electric control valve (7) is a two-position three-way valve, which is arranged on the air control pipeline (6); the sensing control unit ECU (8) has a pressure sensor (801) for sensing the air pressure of the combustion chamber (11), and can control the opening and closing of the electric control valve (7) according to data transmitted by the pressure sensor (801).
2. The axial flow engine air bleed mechanism according to claim 1, characterized in that: The cylinder body (2) is divided into an upper cylinder body and a lower cylinder body (202), and the upper cylinder body (201) and the lower cylinder body (202) are fastened together by bolts.
3. The axial flow engine air bleed mechanism according to claim 1, characterized in that: The piston (4) is a hollow shell-shaped body with an opening facing downward.
4. The axial flow engine air bleed mechanism according to claim 1 or 3, characterized in that: A spring sleeve (401) with an opening facing downward is provided at the center of the bottom surface of the piston (4), and the upper end of the return spring (5) is mounted in a spring seat (2021).
5. The axial flow engine air bleed mechanism according to claim 1, characterized in that: A spring seat (2021) is provided at the center of the bottom of the cylinder cavity (3), and the lower end of the return spring (5) is installed in the spring seat (2021).
6. The axial flow engine air bleed mechanism according to claim 1, characterized in that: The gas control pipeline (6) is divided into a forward gas control pipeline (601) and a bidirectional gas control pipeline (602). The forward gas control pipeline (601) is located between the electric control valve (7) and the combustion chamber, and the bidirectional gas control pipeline (602) is located between the electric control valve (7) and the upper chamber (301) of the cylinder body (2). Gas in the upper chamber (301) can be discharged from the electric control valve (7) through the bidirectional gas control pipeline (602).
7. The axial flow engine air bleed mechanism according to claim 6, characterized in that: The electric control valve (7) comprises an internal air passage (704), an external channel 1 (701), an external channel 2 (702) and an external channel 3 (703); the outer end of the external channel 1 (701) is in communication with the forward air control pipeline (601), the outer end of the external channel 2 (702) is in communication with the outside, the outer end of the external channel 3 (703) is in communication with the bidirectional air control pipeline (602), and the two ends of the internal air passage (704) are respectively a fixed end (7041) and a transposition end (7042). 042), the fixed end (7041) is always connected to the inner end of the external channel three (703), the transposition end (7042) can be alternately connected to the inner end of the external channel one (701) and the inner end of the external channel two (702); when the electric control valve (7) is opened, the transposition end (7042) of the internal air passage (704) is connected to the inner end of the external channel one (701); when the electric control valve (7) is closed, the transposition end (7042) is connected to the inner end of the external channel two (702).
8. The axial flow engine air bleed mechanism according to any one of claims 1, 6 and 7, characterized in that: The electrically controlled valve (7) is a solenoid valve.