An adjustable lube tank overflow interface assembly and lube tank expansion space size adjustment method

Abstract

The application discloses a kind of adjustable oil tank overflow interface components and oil tank expansion space size adjusting method, belong to aero-engine lubrication (oil) system design technical field. Overflow interface components are mainly composed of overflow joint, overflow elbow, sealing ring, bushing, bolt, locking type has broken slot steel wire screw, mounting seat etc..The application can control the size of expansion space in oil tank according to the actual demand of oil tank, control the overflow of liquid in oil tank by rotating overflow elbow, prevent oil leakage caused by excessive oiling, maintain system pressure balance, and automatically discharge in abnormal conditions.The application is applied to aero-engine oil system oil tank, with small volume, light weight, high integration and good maintenance, etc., can realize the role of oil tank adjusting expansion space.

Description

Technical Field

[0001] This invention relates to an adjustable oil tank overflow connector assembly and a method for adjusting the size of the oil tank expansion space, applicable to the field of aero-engine lubrication systems, particularly the structure and adjustment method of the adjustable overflow connector assembly on the oil tank of the lubrication system. Background Technology

[0002] The oil tank is a crucial component of the lubrication system in aircraft engines. Its volume consists of the maximum fill volume and an expansion space. The expansion space is a reserve beyond the maximum oil level to prevent oil overflow or excessive pressure, allowing for oil expansion, venting, and foam containment. Overfilling the oil tank and submerging the expansion space can lead to excessive pressure, oil leakage, and even tank rupture. Summary of the Invention

[0003] This invention aims to provide an adjustable oil tank overflow interface assembly and a method for adjusting the expansion space of the oil tank. This assembly controls the size of the expansion space within the oil tank according to actual needs, preventing oil overflow, avoiding oil leakage due to overfilling, maintaining system pressure balance, and automatically discharging excess oil in abnormal situations. When the oil tank in the lubrication system is overfilled, the excess oil is discharged through the overflow connector assembly, ensuring the safe operation of the oil supply lines and the oil tank.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable oil tank overflow connector assembly includes: Mounting base, the mounting base is disposed on the side of the oil tank, and the surface of the mounting base has threaded holes; An overflow connector, comprising a connector and a base, wherein the base has two arc-shaped through grooves that pass through a first end face and a second end face that are parallel to each other, the connector is located between the two arc-shaped through grooves and is fixed to the first end face of the base corresponding to the center of the circumference of the two arc-shaped through grooves, and a sealing groove is provided on the second end face of the base, and a sealing ring is installed in the sealing groove. The bolt, the overflow connector, is connected to the surface of the mounting base by the bolt passing through the arc-shaped through groove and extending into the threaded hole of the mounting base; An overflow bend is provided. The first end of the overflow bend passes through a sealing ring and connects to the connector of the overflow joint. The second end of the overflow bend extends into the lubricating oil tank to form an overflow inlet. The connecting channel between the second end and the first end of the overflow bend includes a straight channel and a curved channel. The second end connects to the first end after passing through the curved channel and the straight channel in sequence.

[0005] As one option: a locking type wire thread insert with a break groove is installed in the threaded hole of the mounting base.

[0006] As one option: a bushing is provided between the bolt and the first end face of the seat, and the bushing is fitted onto the bolt.

[0007] As one option: the straight channel of the overflow bend is perpendicular to the second end face of the seat.

[0008] As one option, the second end of the overflow bend is welded to the connector on the overflow fitting.

[0009] A method for adjusting the expansion space of an oil tank, employing the aforementioned adjustable oil tank overflow connector assembly, includes the following steps: Step 1: Fix the mounting bracket to the side of the oil tank, and extend the second end of the overflow bend into the oil tank. Step 2: Rotate the bolts so that the second end face of the overflow connector body is no longer tightly attached to the mounting base; Step 3: Rotate the seat body clockwise or counterclockwise so that the seat body rotates around the joint and relative to the bolts in the two arc-shaped through grooves, thereby driving the second end of the overflow bend to be completely below the maximum oil level line, or completely above the maximum oil level line, or partly below the maximum oil level line while the other part is above the maximum oil level line. Step 4: Rotate the bolt in the opposite direction to Step 2 so that the second end face of the overflow connector body is tightly attached to the mounting base.

[0010] Compared with the prior art, the present invention is applied to the lubricating oil tank of the aircraft engine lubrication system. The size of the expansion space of the lubricating oil tank can be adjusted according to the actual working conditions to ensure that the lubricating oil tank has sufficient expansion volume and ensure the safe operation of the engine.

[0011] This invention adjusts the distance between the overflow inlet and the lubricating oil surface by rotating a curved overflow bend around its own axis. The rotation of the overflow bend is achieved through two arc-shaped through slots on the base and bolts.

[0012] The adjustable lubricating oil tank overflow connector assembly of the present invention has a simple structure, good sealing performance, small size, light weight, and high integration. It reduces the volume and weight of the adjustment device, has a reasonable structure, and is easy to maintain.

[0013] The overflow connector seat of this invention is designed with two arc-shaped through grooves. Bolts are connected to the mounting base through these two arc-shaped through grooves. After loosening the bolts, the overflow connector can be rotated to adjust the contact height between the overflow bend and the liquid surface in the oil tank. The oil tank overflow height adjustment method of this invention is simple, easy to operate, and simple to maintain. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the adjustable lubricating oil tank overflow connector assembly of the present invention; Figure 2 A schematic diagram of the end face of the overflow connector housing with the sealing groove on one side; Figure 3 This is a schematic diagram showing the state where the overflow inlet of the overflow bend is adjusted to be higher than the maximum oil level line by rotating the arc-shaped channel clockwise. Figure 4 This is a schematic diagram showing the state where the overflow inlet of the overflow bend is partially below the maximum oil level line and partially above the maximum oil level line when the arc-shaped through groove is rotated counterclockwise. In the diagram: 1. Bolt; 2. Arc-shaped through groove; 3. Overflow connector; 4. Bushing; 5. Locking type wire thread insert with break groove; 6. Mounting base; 7. Sealing ring; 8. Overflow bend. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0016] like Figure 1 and Figure 2 As shown, this invention provides an adjustable oil tank overflow connector assembly, including a bolt 1, an overflow connector 3, an overflow bend 8, a sealing ring 7, a bushing 4, a locking type wire threaded sleeve with a break groove 5, and a mounting base 6. The overflow connector 3 is divided into two parts: a connector and a base (the connector can be welded to the base or cast integrally with the base). The base has two arc-shaped through grooves 2, which penetrate two parallel end faces of the base and are located on the same circumference. The connector is installed at the center of this circumference. The other end face of the base has a sealing groove for assembling the sealing ring 7, which provides dynamic sealing when the overflow bend 8 rotates and static sealing when stationary.

[0017] The overflow bend 8 includes a straight section and a curved section. The end of the curved section serves as the overflow inlet (the inlet for lubricating oil to enter the overflow bend 8). The overflow connector 3 is welded to the overflow bend 8 and connected. During welding, the axis of the straight section of the overflow bend 8 is perpendicular to the circumferential plane (the plane where the circumference is located) corresponding to the two arc-shaped through grooves 2 on the overflow connector 3 seat, so as to ensure that the overflow connector assembly has the largest possible adjustment range.

[0018] Install a locking type wire thread insert 5 with a break groove in the threaded hole of the mounting base 6 to increase the connection strength, improve the connection conditions, prevent loosening, increase the safety factor of the adjustable lubricating oil tank overflow connector assembly, and facilitate maintenance.

[0019] Bolt 1 passes through the arc-shaped through groove 2 of the overflow connector 3 and connects to the mounting base 6. A bushing 4 is assembled between bolt 1 and overflow connector 3 to act as a wear-bearing component and reduce the wear of the base and bolt 1.

[0020] like Figure 1 The seat of the overflow connector 3 is installed vertically on the side of the lubricating oil tank, keeping the straight part of the overflow bend 8 parallel to the lubricating oil surface.

[0021] When the overflow height needs to be adjusted, loosening bolt 1 allows rotation of the overflow connector 3's seat to adjust the height of the end (overflow inlet) of the bent section of the overflow bend 8 in contact with the oil surface in the lubricating oil tank. Since the two bolts 1 are fixed, rotating the seat causes the two arc-shaped grooves 2 to rotate clockwise or counterclockwise relative to the two bolts 1. The center of rotation is the center of the two arc-shaped grooves 2, which is also the location of the connector. Because the connector and seat are integral and welded together, the overflow bend 8 also rotates synchronously, causing the overflow inlet of the bent section of the overflow bend 8 to shift relative to the lubricating oil surface, thus achieving adjustment. After adjustment, bolt 1 is tightened again to secure the relative position of the seat and mounting base 6.

[0022] like Figure 3 When special circumstances require reducing the expansion space of the lubricating oil tank, the overflow inlet of the overflow bend 8 can be raised by rotating the arc-shaped through groove 2 on the seat clockwise, so that the overflow inlet of the overflow bend 8 is completely higher than the maximum oil level line of the lubricating oil. At this time, the lubricating oil level is lower than the overflow inlet of the overflow bend 8, and the lubricating oil will not overflow.

[0023] like Figure 4 By rotating the arc-shaped groove 2 on the seat body counterclockwise to lower the overflow inlet of the overflow bend 8, most of the overflow inlet of the overflow bend 8 is below the maximum oil level line of the lubricating oil, and a small part is above the maximum oil level line of the lubricating oil. The excess lubricating oil above the maximum oil level line ( Figure 4 The lubricating oil level in the tank is discharged from the overflow inlet through the overflow bend 8 and the connector, thereby ensuring the safety of the lubricating oil tank.

[0024] Based on the actual usage of the engine lubrication system's oil tank, the expansion space inside the oil tank is controlled according to the actual needs of the oil tank. This controls the overflow of liquid from the oil tank, prevents oil leakage caused by overfilling, maintains system pressure balance, and automatically discharges in abnormal situations, ensuring the safe operation of the lubrication system's oil supply lines and oil tank.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable oil tank overflow connector assembly, characterized in that, include: Mounting seat (6), which is disposed on the side of the oil tank, and has threaded holes on its surface; Overflow connector (3), the overflow connector (3) includes a connector and a seat body. The seat body has two arc-shaped through grooves (2) that pass through the first end face and the second end face of the seat body. The connector is located between the two arc-shaped through grooves (2) and is located at the center of the circumference of the two arc-shaped through grooves (2) and fixed on the first end face of the seat body. The second end face of the seat body has a sealing groove and a sealing ring (7) is installed in the sealing groove. Bolt (1) and overflow connector (3) are connected to the surface of mounting base (6) by the bolt (1) passing through the arc-shaped through groove (2) and extending into the threaded hole of mounting base (6); An overflow bend (8) is formed by the first end of the overflow bend (8) passing through the sealing ring (7) and connecting with the connector of the overflow connector (3). The second end of the overflow bend (8) extends into the lubricating oil tank to form an overflow inlet. The connecting channel between the second end and the first end of the overflow bend (8) includes a straight channel and a curved channel. The second end connects with the first end after passing through the curved channel and the straight channel in sequence.

2. The adjustable oil tank overflow connector assembly according to claim 1, characterized in that: A locking type wire thread insert (5) with a break groove is installed in the threaded hole of the mounting base (6).

3. The adjustable oil tank overflow connector assembly according to claim 1, characterized in that: A bushing (4) is provided between the bolt (1) and the first end face of the seat, and the bushing (4) is fitted onto the bolt (1).

4. The adjustable oil tank overflow connector assembly according to claim 1, characterized in that: The straight channel of the overflow bend (8) is perpendicular to the second end face of the seat.

5. The adjustable oil tank overflow connector assembly according to claim 1, characterized in that: The second end of the overflow bend (8) is welded to the joint on the overflow connector (3).

6. A method for adjusting the size of the expansion space in a lubricating oil tank, characterized in that: The adjustable lubricating oil tank overflow connector assembly as described in claim 1 includes the following steps: Step 1: Fix the mounting base (6) to the side of the lubricating oil tank, and extend the second end of the overflow bend (8) into the lubricating oil tank; Step 2: Rotate the bolt (1) so that the second end face of the overflow connector (3) is no longer in close contact with the mounting base (6); Step 3: Rotate the seat body clockwise or counterclockwise so that the seat body rotates with the joint as the center and relative to the bolts (1) in the two arc-shaped through grooves (2), thereby driving the second end of the overflow bend (8) to be completely below the maximum oil level line, or completely above the maximum oil level line, or partly below the maximum oil level line while the other part is above the maximum oil level line; Step 4: Rotate the bolt (1) in the opposite direction to Step 2 so that the second end face of the overflow connector (3) is in close contact with the mounting base (6).

Images