CN216519806U - Torsion spring differential pressure valve structure for pressure adjustment of high-pressure unloading cavity of engine - Google Patents
Torsion spring differential pressure valve structure for pressure adjustment of high-pressure unloading cavity of engine Download PDFInfo
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- CN216519806U CN216519806U CN202123004727.1U CN202123004727U CN216519806U CN 216519806 U CN216519806 U CN 216519806U CN 202123004727 U CN202123004727 U CN 202123004727U CN 216519806 U CN216519806 U CN 216519806U
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- unloading cavity
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Abstract
The utility model discloses a torsion spring differential pressure valve structure for pressure adjustment of a high-pressure unloading cavity of an engine, which comprises: a damping member; the blocking piece is in tight pressing contact with the other end of the damping part, and the blocking piece is in contact with the exhaust port under the damping force action of the damping part to be blocked or separated to be opened. When the aircraft engine is in a low pressure state such as slow running, the pressure level of the gas introduced from the three places is low in the high-pressure unloading cavity, the exhaust port is blocked by the blocking piece, and the gas cannot be exhausted from the exhaust port of the diffusion support plate, so that the axial force of the high-pressure rotor is increased, and the problem that the axial force of the high-pressure rotor drops to zero or is reversed is solved. When the aircraft engine is in a state of high pressure such as fast driving, the pressure of the gas introduced from the three positions is increased and heightened in the high-pressure unloading cavity, and the pressure increase of the exhaust port overcomes the damping force of the damping piece, so that the blocking piece and the exhaust port are separated and opened for exhausting.
Description
Technical Field
The utility model relates to a torsion spring differential pressure valve structure for pressure adjustment of a high-pressure unloading cavity of an engine, and belongs to the technical field of engines.
Background
In an aircraft engine, in order to ensure that a thrust bearing can reliably and stably operate within the service life of the engine, the axial force of a rotor needs to be ensured within the bearing load range, the pressure of a high-pressure unloading cavity is a main factor influencing the axial force of the high-pressure rotor, and the axial force of the high-pressure rotor can be effectively controlled by controlling the pressure of the high-pressure unloading cavity.
The air in the high-pressure unloading cavity is discharged through an exhaust outlet of the diffusion support plate, the air inlet and air entraining positions of the high-pressure unloading cavity are three positions at the rear part of the air compressor, the seventh stage of the air compressor and the rear part of the swirler, the air pressures at the air entraining positions are different, and the pressure level of the air introduced by the three positions is lower when an aircraft engine is in a low-pressure state such as slow-speed operation and the like due to the absence of a differential pressure valve structure, so that the axial force of a high-pressure rotor is smaller, and even the problem that the axial force of the high-pressure rotor drops to zero or is reversed exists.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a torsion spring differential pressure valve structure for pressure adjustment of a high-pressure unloading cavity of an engine.
The utility model is realized by the following technical scheme.
The utility model provides a torsion spring differential pressure valve structure for regulating the pressure of a high-pressure unloading cavity of an engine, which comprises:
a damping member;
the blocking piece is in pressing contact with the other end of the damping piece, and the blocking piece is in contact with the exhaust port to be blocked or separated to be opened under the damping force action of the damping piece.
The damping piece is a cylinder spring or cylinder elastic rubber, and the damping piece is fixed on the casing through the mounting side plate.
The damping piece is a torsion spring, the torsion spring can be rotatably installed on the supporting plate around a pin shaft through the pin shaft, and two force application edges of the torsion spring are correspondingly contacted on the blocking piece and the installation edge plate respectively.
The middle part of the mounting side plate is provided with a through hole fixedly connected with the casing through a pin.
The backup pad is fixed two on installation sideboard both sides limit for the interval, the torsional spring is two torsional springs, and two torsional spring both ends all can be installed in the backup pad around the round pin axle rotation through the round pin axle.
The rotatable cover of jam piece both sides through connecting the sideboard is epaxial, and when the pressure increase of gas vent overcome the torsion of two torsional springs and push up the jam piece open, the jam piece uses the round pin axle to rotate the perk to open as the rotation axis, realizes that the jam piece is vented after opening with the gas vent stable separation.
Two backup pads are located the inboard of jam piece, and the backup pad corresponds and is the inclined plane with jam piece contact segment, and the backup pad has the interval with the jam piece normality, uses the round pin axle to rotate the perk to open the back when the jam piece and can receive the spacing of backup pad, avoids excessively opening as the rotation axis.
The installation sideboard lower part is to the integrative fixed spacing section that extends of jam piece direction, and spacing section contacts spacingly with the jam piece root when the gas vent is plugged up to the jam piece, avoids the jam piece to constitute the impact to the gas vent under the torsion of two torsional springs.
The utility model has the beneficial effects that: when the aircraft engine is in a low pressure state such as slow running, the pressure level of the gas introduced from the three places is low in the high-pressure unloading cavity, the exhaust port is blocked by the blocking piece, and the gas cannot be exhausted from the exhaust port of the diffusion support plate, so that the axial force of the high-pressure rotor is increased, and the problem that the axial force of the high-pressure rotor drops to zero or is reversed is solved. When the aircraft engine is in a state of high pressure such as fast driving, the pressure of the gas introduced from the three positions is increased and heightened in the high-pressure unloading cavity, and the pressure increase of the exhaust port overcomes the damping force of the damping piece, so that the blocking piece and the exhaust port are separated and opened for exhausting.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the present invention when the locking piece is tilted and opened;
FIG. 3 is a schematic view of the vent being blocked by the blocking piece in the use state of the present invention;
in the figure: 1-a damping member; 2-blocking piece; 21-connecting the side plates; 3, installing a side plate; 31-a limiting section; 4-a support plate; 5-a pin shaft; 11-a casing; 12-a diffusion support plate; 13-exhaust port.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1-3.
The utility model relates to a torsion spring differential pressure valve structure for regulating the pressure of a high-pressure unloading cavity of an engine, which comprises:
the damping part 1 is welded or fixed on the casing 11 through a pin at one end during installation;
the plug piece 2 for plugging the exhaust port 13 of the diffusion support plate 12 is tightly pressed and contacted with the other end of the damping piece 1, and the plug piece 2 is contacted with the exhaust port 13 to be plugged or separated to be opened under the damping force action of the damping piece 1.
One end of the damping piece 1 is fixed with the casing 11, the other end of the damping piece 1 is in pressing contact with the blocking piece 2, the blocking piece 2 blocks the exhaust port 13 of the diffusion support plate 12 in a normal state, when an aircraft engine is in a low-pressure state such as slow-speed operation, the pressure level of gas introduced from three places is lower in a high-pressure unloading cavity, the exhaust port 13 is blocked by the blocking piece 2, and the gas cannot be exhausted from the exhaust port 13 of the diffusion support plate 12, so that the axial force of the high-pressure rotor is increased, and the problem that the axial force of the high-pressure rotor drops to zero or is reversed is solved. When the aircraft engine is in a state of high pressure such as fast driving, the pressure of the gas introduced from the three places is increased and increased in the high-pressure unloading cavity, the pressure increase of the exhaust port 13 overcomes the damping force of the damping piece 1, so that the blocking piece 2 and the exhaust port 13 are separated and opened for exhausting, the increase and the increase of the pressure of the high-pressure unloading cavity are reduced and controlled, and the service life of the bearing is ensured not to be influenced by overlarge axial force of the high-pressure rotor. Therefore, the pressure of the high-pressure unloading cavity can form a dynamic balance state, and the initial set reasonable range is maintained.
The damping piece is characterized by further comprising an installation side plate 3, the damping piece 1 is a cylinder spring or cylinder elastic rubber, and the damping piece 1 is fixed on the casing 11 through the installation side plate 3.
Still include that the middle part is equipped with through-hole and cartridge receiver 11 and sells installation sideboard 3, welded fastening's backup pad 4 on installation sideboard 3, damping part 1 is the torsional spring, and the torsional spring can be installed on backup pad 4 around round pin 5 rotations of axle through round pin 5, and two application of force limits of torsional spring correspond the contact respectively on closure plate 2 and installation sideboard 3.
The backup pad 4 is fixed two on installation sideboard 3 both sides limit for the interval, the torsional spring is two torsional springs, and two torsional springs both ends are all installed on backup pad 4 through round pin axle 5 rotation around round pin axle 5.
Both sides of the blocking piece 2 are rotatably sleeved on the pin shaft 5 through the connecting side plate 21, when the pressure of the exhaust port 13 is increased and the blocking piece 2 is pushed open by overcoming the torsion of the double torsion springs, the blocking piece 2 rotates and tilts to be opened by taking the pin shaft 5 as a rotating shaft, and the blocking piece 2 and the exhaust port 13 are stably separated and opened to exhaust.
Two backup pads 4 are located the inboard of closure piece 2, and backup pad 4 corresponds and is the inclined plane with closure piece 2 contact segment, and backup pad 4 has the interval with closure piece 2 normality, uses round pin axle 5 to rotate the perk to open when closure piece 2 and can receive backup pad 4 spacing as the rotation axis, avoids excessively opening.
The lower part of the mounting side plate 3 is fixedly extended to the direction of the blocking piece 2 to form a limiting section 31, the limiting section 31 is contacted with the root of the blocking piece 2 when the blocking piece 2 blocks the exhaust port 13 to be limited, and the blocking piece 2 is prevented from impacting the exhaust port 13 under the torsion of the double torsion springs.
Claims (8)
1. A torsion spring differential pressure valve structure for regulating the pressure of a high-pressure unloading cavity of an engine is characterized by comprising:
a damping member (1);
the blocking piece (2), the blocking piece (2) sticiss with the damping piece (1) other end and contacts, and blocking piece (2) contact under the damping force effect of damping piece (1) and gas vent (13) are stopped up or are separated and open.
2. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity as claimed in claim 1, wherein: still including installation sideboard (3), damping piece (1) is cylinder spring or cylinder elastic rubber, and damping piece (1) is fixed on machine casket (11) through installation sideboard (3).
3. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity as claimed in claim 1, wherein: still including installation sideboard (3), backup pad (4) of welded fastening on installation sideboard (3), damping piece (1) is the torsional spring, and the torsional spring can be around round pin axle (5) rotation mounting on backup pad (4) through round pin axle (5), and two application of force limits of torsional spring correspond the contact respectively on closure plate (2) and installation sideboard (3).
4. A torsion spring differential pressure valve structure for pressure regulation of an engine high pressure unloading cavity according to claim 3, wherein: the middle part of the mounting side plate (3) is provided with a through hole fixedly connected with the casing (11) through a pin.
5. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity as claimed in claim 4, wherein: backup pad (4) are fixed two on installation sideboard (3) both sides limit for the interval, the torsional spring is two torsional springs, and two torsional spring both ends all can be around round pin axle (5) rotation mounting on backup pad (4) through round pin axle (5).
6. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity according to claim 5, characterized in that: the both sides of jam piece (2) are all through connecting that sideboard (21) rotatable cover is on round pin axle (5), and when the pressure increase of gas vent (13) overcome two torsional spring's torsion and open jam piece (2) top, jam piece (2) use round pin axle (5) to rotate the perk and open as the rotation axis, realize that jam piece (2) and gas vent (13) stable separation open the back and carry out the exhaust.
7. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity as claimed in claim 6, wherein: two backup pads (4) are located the inboard of closure plate (2), and backup pad (4) correspond and closure plate (2) contact segment is the inclined plane, and backup pad (4) and closure plate (2) normality have the interval, use round pin axle (5) as the rotation axis in closure plate (2) to rotate the perk and open the back and can receive the spacing of backup pad (4).
8. The torsion spring differential pressure valve structure for pressure regulation of an engine high-pressure unloading cavity as claimed in claim 6, wherein: the lower part of the mounting side plate (3) is fixedly extended to the direction of the plugging piece (2) to form a limiting section (31), and the limiting section (31) is in contact with the root of the plugging piece (2) for limiting when the exhaust port (13) is plugged by the plugging piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123004727.1U CN216519806U (en) | 2021-12-01 | 2021-12-01 | Torsion spring differential pressure valve structure for pressure adjustment of high-pressure unloading cavity of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123004727.1U CN216519806U (en) | 2021-12-01 | 2021-12-01 | Torsion spring differential pressure valve structure for pressure adjustment of high-pressure unloading cavity of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216519806U true CN216519806U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123004727.1U Active CN216519806U (en) | 2021-12-01 | 2021-12-01 | Torsion spring differential pressure valve structure for pressure adjustment of high-pressure unloading cavity of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216519806U (en) |
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2021
- 2021-12-01 CN CN202123004727.1U patent/CN216519806U/en active Active
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