Elastic wave foil type cylindrical surface air film flexible supporting structure

Abstract

The invention relates to an elastic wave foil type cylindrical surface air film flexible supporting structure, and belongs to the technical field of non-contact mechanical sealing. The structure comprises an outer supporting shaft sleeve, a flat plate, a corrugated foil, a static ring, a moving ring rotor and a pressing block, a groove is formed in the moving ring rotor, the static ring is eccentrically installed on the moving ring rotor, the outer supporting shaft sleeve and the static ring are coaxially installed on an external structure, a clamping groove is formed in the circumferential inner wall of the outer supporting shaft sleeve, an arc plate is arranged on the corrugated foil, the arc plate is located on the inner circumferential wall of the outer supporting shaft sleeve, the flat plate is installed on one side in the clamping groove, the corrugated foil is tightly attached to the flat plate and installed in the clamping groove, and the pressing block is pressed into the other side in the clamping groove. According to the structure, the large load can be borne, and uniform structural rigidity can be borne; the supporting performance of the sealing structure can be improved by adjusting the number of the corrugated foils and parameters of the corrugated foils; the flexible supporting and buffering effect and the heat transfer performance of the sealing structure can be improved by adjusting the porosity degree of holes wound by steel wires of the flat plate and the arc plate.

Description

technical field

[0001] The invention relates to an elastic wave foil type cylinder air film flexible support structure, which is especially suitable for an axial sealing device of a rotating shaft of a high-speed rotating machine, and belongs to the technical field of non-contact mechanical sealing. Background technique

[0002] Sealing technology is one of the key technologies of aero-engines. Sealing technology plays a key role in improving mechanical work efficiency and ensuring reliability. The original traditional sealing methods all use contact seals, which are only suitable for low-speed rotating machines. For high-speed rotating machines, the contact seal structure will generate a lot of friction, which seriously affects the mechanical structure. Therefore, in high-speed rotating machines, non-contact seals are used. The sealing device is particularly important; the general aerospace field is the field of high-speed operation machinery, and the use of non-contact sea...

Examples

Embodiment 1

[0023] Embodiment 1: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There is a slot 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 8 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring ...

Embodiment 2

[0026] Embodiment 2: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There is a slot 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 12 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring...

Embodiment 3

[0029] Embodiment 3: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There are slots 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 16 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring...

technical field

[0001] The invention relates to an elastic wave foil type cylinder air film flexible support structure, which is especially suitable for an axial sealing device of a rotating shaft of a high-speed rotating machine, and belongs to the technical field of non-contact mechanical sealing. Background technique

[0002] Sealing technology is one of the key technologies of aero-engines. Sealing technology plays a key role in improving mechanical work efficiency and ensuring reliability. The original traditional sealing methods all use contact seals, which are only suitable for low-speed rotating machines. For high-speed rotating machines, the contact seal structure will generate a lot of friction, which seriously affects the mechanical structure. Therefore, in high-speed rotating machines, non-contact seals are used. The sealing device is particularly important; the general aerospace field is the field of high-speed operation machinery, and the use of non-contact sea...

Examples

Embodiment 1

[0023] Embodiment 1: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There is a slot 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 8 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring ...

Embodiment 2

[0026] Embodiment 2: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There is a slot 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 12 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring...

Embodiment 3

[0029] Embodiment 3: as Figure 1-8 As shown, an elastic wave foil type cylindrical air film flexible support structure includes an outer support sleeve 1, a flat plate 2, a corrugated foil 4, a static ring 5, a moving ring rotor 6, and a pressure block 7; There are slots 601, the static ring 5 is eccentrically installed on the moving ring rotor 6, the outer support sleeve 1 and the static ring 5 are coaxially installed on the external structure, and the inner wall of the outer support sleeve 1 is provided with 16 card slots 101 , the corrugated foil 4 is provided with an arc plate 3, the arc plate 3 is located on the inner peripheral wall of the outer support sleeve 1, the flat plate 2 is installed on the inner side of the card slot 101, and the corrugated foil 4 is installed close to the flat plate 2 In the card slot 101, the pressing block 7 is pressed into the other side of the card slot 101, the corrugated foil 4 is in linear contact with the outer wall of the static ring...

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