CN220687970U

CN220687970U - Sealing body

Info

Publication number: CN220687970U
Application number: CN202321407640.5U
Authority: CN
Inventors: 陈延刚; 公衍宏
Original assignee: Linshu County Yonggu Wheel Industry Co ltd
Current assignee: Linshu County Yonggu Wheel Industry Co ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2024-03-29
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a sealing body, which comprises an intermediate bearing and a sealing element, wherein a low-pressure shaft is sleeved outside the intermediate bearing, and a high-pressure shaft is sleeved outside the low-pressure shaft; the sealing element comprises an outer sealing tube and an inner sealing tube, the outer part of the low-pressure shaft is sleeved with the inner sealing tube, and the outer part of the inner sealing tube is sleeved with the outer sealing tube; a sealing cavity is arranged between the inner sealing tube and the outer sealing tube, and rubber fixing blocks are arranged on the outer surfaces of the inner sealing tube; the upper end of the rubber fixing block is provided with a spring, and the top end of the spring is provided with an arc-shaped elastic sheet; this seal body, simple structure, convenient operation sets up inside and outside two-layer sealed tube between high, low pressure axle, and is buffer support device through the arc shell fragment of scalable support formula, and the reinforcing is sealed many diaxons to through the cooperation of the inside and outside sealed tube of mutually supporting, can be convenient for dismouting, and prevent to lead to seal cover deformation, influence efficiency because of dismantling.

Description

Sealing body

Technical Field

The utility model relates to the field of sealing bodies, in particular to a sealing body.

Background

In a double-rotor aeroengine or a gas turbine, a high-pressure rotor and a low-pressure rotor are connected through an intermediate bearing, the two shaft sleeves are together, the intermediate bearing is positioned between the high-pressure shaft and the low-pressure shaft, and plays a supporting role, and the sealing of the intermediate bearing is inter-shaft sealing;

because the shaft sealing body is continuously updated, in the prior art, the shaft sealing body is inconvenient to disassemble and assemble due to repeated installation and disassembly when the high-pressure shaft and the low-pressure shaft are maintained, and the sealing body is easy to deform in the prior art, so that the prior art needs to be improved.

Disclosure of Invention

In view of the shortcomings of the prior art, an object of the present utility model is to provide a seal.

The technical scheme adopted for solving the technical problems is as follows: the sealing body comprises an intermediate bearing and a sealing piece sleeved outside the intermediate bearing, wherein a low-pressure shaft is sleeved outside the intermediate bearing, and a high-pressure shaft is sleeved outside the low-pressure shaft;

the sealing element comprises an outer sealing tube and an inner sealing tube, the outer part of the low-pressure shaft is sleeved with the inner sealing tube, and the outer part of the inner sealing tube is sleeved with the outer sealing tube;

a sealing cavity is arranged between the inner sealing tube and the outer sealing tube, and rubber fixing blocks are arranged on the outer surfaces of the inner sealing tubes;

the upper end of the rubber fixing block is provided with a spring, and the top end of the spring is provided with an arc-shaped elastic sheet;

the upper end of the arc-shaped elastic sheet is fixedly connected with the outer sealing tube.

Further, the outer sealing tube comprises an outer sealing ring a and an outer sealing ring b, a hinge shaft is arranged at the end part of the outer sealing ring a, a hinge sleeve is arranged at the end part of the outer sealing ring b, and the hinge shaft is hinged with the hinge sleeve.

Further, the inner sealing tube comprises an inner sealing ring a and an inner sealing ring b, wherein the two end parts of the inner sealing ring a are provided with a fastening plate a, the two end parts of the inner sealing ring b are provided with a fastening plate b, the side walls of the fastening plate a and the fastening plate b are provided with fastening holes, and bolt bodies are inserted into the fastening holes.

Further, the lower extreme of bolt main part has seted up the circle recess, the bolt pole is installed to the lower extreme middle section of circle recess, and in the bolt pole tip grafting fastening hole, the outside spiro union of bolt pole has fastening nut.

Further, a fixing ring is arranged at the upper end of the outer part of the bolt rod, and an annular pressing sheet, a spring and an annular rubber sheet are sleeved on the circumferential surface of the bolt rod.

Further, an extrusion sheet is arranged at the edge of the lower end of the annular sheet.

Further, a sealing sleeve a is fixedly sleeved outside the outer sealing tube, a high-pressure shaft is sleeved outside the sealing sleeve a, and a sealing sleeve b is fixedly sleeved between the intermediate bearing and the inner sealing tube.

Further, both ends of the high-pressure shaft are provided with rotating ports, and the high-pressure shaft is sleeved outside the low-pressure shaft.

The beneficial effects of the utility model are as follows:

the utility model provides a sealing body, simple structure, convenient operation sets up inside and outside two-layer sealed tube between high, low pressure axle, and is buffer support device through scalable support formula arc shell fragment, and the reinforcing is sealed for many diaxons to through the cooperation of the inside and outside sealed tube of mutually supporting, can be convenient for dismouting, and prevent to lead to seal cartridge deformation because of dismantling, influence efficiency.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a side view of the present utility model.

FIG. 3 is a schematic view of the structure of part A of the present utility model.

Fig. 4 is a schematic view of a bolt body of the present utility model.

Reference numerals illustrate: the device comprises a medium bearing 1, a high-pressure shaft 2, a low-pressure shaft 3, a rotating port 4, a sealing sleeve a 5 of a sealing cavity 6, a sealing piece 7, an outer sealing tube 81, an inner sealing tube 82, a sealing sleeve b 9, an arc-shaped elastic sheet 10, a rubber fixing block 11, a buffer spring 12, a hinging shaft 13, a hinging sleeve 14, a fastening plate a 1171, a fastening plate b 152, a fastening hole 16 and a bolt main body 17.

Detailed Description

The utility model will be further illustrated with reference to specific examples, which are to be understood as illustrative only and are not intended to limit the scope of the utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the structure of the present utility model is schematically shown, a sealing body comprises an intermediate bearing 1 and an external sealing member 7 sleeved on the intermediate bearing 1, a low-pressure shaft 3 is sleeved outside the intermediate bearing 1, a high-pressure shaft 3 is sleeved outside the low-pressure shaft 3, the intermediate bearing 1 is a medium for connecting the high-pressure shaft and the low-pressure shaft, the intermediate bearing and the high-pressure shaft and the low-pressure shaft are conventional double-shaft devices, an inner sealing tube is fixedly sleeved on the outer circumferential surface of the low-pressure shaft between the low-pressure shaft and the intermediate bearing, and an outer sealing tube is sleeved outside the inner sealing tube;

the sealing element 7 comprises an outer sealing tube 81 and an inner sealing tube 82, the inner sealing tube 82 is sleeved outside the low-pressure shaft 3, and the outer sealing tube 81 is sleeved outside the inner sealing tube 82;

a sealing cavity 5 is arranged between the inner sealing tube 82 and the outer sealing tube 81, and rubber fixing blocks 11 are arranged on the outer surfaces of the inner sealing tube 82;

the upper end of the rubber fixing block 11 is provided with a buffer spring 12, the top end of the buffer spring 12 is provided with an arc-shaped elastic sheet 10, and the outer sealing tube 6 is supported in a time packing maximizing way through the cooperation of the spring and the arc-shaped elastic sheet, so that deformation is prevented;

the upper end of the arc-shaped elastic sheet 10 is fixedly connected with an outer sealing tube 81.

The outer sealing tube 81 comprises an outer sealing ring a 701 and an outer sealing ring b 702, the end part of the outer sealing ring a 701 is provided with a hinge shaft 13, the end part of the outer sealing ring b 702 is provided with a hinge sleeve 14, and the hinge shaft 13 and the hinge sleeve 14 are hinged, so that the outer sealing ring a 701 and the outer sealing ring b 702 are opened and closed.

The inner sealing tube 82 comprises an inner sealing ring a 801 and an inner sealing ring b 802, the two end parts of the inner sealing ring a 801 are provided with a fastening plate a 1171, the two end parts of the inner sealing ring b 802 are provided with a fastening plate b 152, the side walls of the fastening plate a 1171 and the fastening plate b 152 are provided with fastening holes 16, the fastening holes 16 are internally inserted with bolt main bodies 17, and when the outer sealing ring a 701 and the outer sealing ring b 702 are opened, the inner sealing ring a 801 and the inner sealing ring b 802 are driven to be opened and closed, and are fixed through a bolt path search pig 17.

The lower end of the bolt main body 17 is provided with a circular groove 173, a bolt rod 181 is installed in the middle section of the lower end of the circular groove 173, the end part of the bolt rod 181 is inserted into the fastening hole 16, and a fastening nut 178 is screwed outside the bolt rod 181.

A fixed ring 176 is arranged at the upper end of the outer part of the bolt rod 171, and an annular pressing sheet 174, a spring 177 and an annular rubber sheet 182 are sleeved on the circumferential surface of the bolt rod 181;

the annular pressing piece 174 is located at the upper side of the fixing ring 176, the spring 177 is located at the upper side of the annular pressing piece 177, and the annular rubber piece 177 is located at the lower side of the fixing ring 176.

A squeeze tab 175 is mounted at the lower edge of the annular tab 174.

A sealing sleeve a 6 is fixedly sleeved outside the outer sealing tube 81, a high-pressure shaft 3 is sleeved outside the sealing sleeve a 6, a sealing sleeve b 9 is fixedly sleeved between the intermediate bearing 1 and the inner sealing tube 82, the high-pressure shaft 3 and the outer sealing tube are sealed through the sealing sleeve a, the intermediate bearing and the inner sealing tube are sealed through the sealing sleeve b, and the sealing sleeve a is made of high-temperature resistant rubber; the sealing sleeve b is made of high-temperature-resistant silica gel.

Both ends of the high-pressure shaft 3 are provided with rotating ports 4, and are sleeved outside the low-pressure shaft 3.

Working and principle: in the case of attaching the seal 7, the inner seal tube 82 is first attached, fixed by the bolt body 17, and then the outer seal tube 81 is attached.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A sealing body comprising an intermediate bearing (1) and a sealing member (7) sleeved outside the intermediate bearing (1), characterized in that: the low-pressure shaft (3) is sleeved outside the intermediate bearing (1), and the high-pressure shaft (2) is sleeved outside the low-pressure shaft (3);

the sealing element (7) comprises an outer sealing tube (81) and an inner sealing tube (82), the inner sealing tube (82) is sleeved outside the low-pressure shaft (3), and the outer sealing tube (81) is sleeved outside the inner sealing tube (82);

a sealing cavity (5) is arranged between the inner sealing tube (82) and the outer sealing tube (81), and rubber fixing blocks (11) are arranged on the outer surfaces of the inner sealing tube (82);

the upper end of the rubber fixing block (11) is provided with a buffer spring (12), and the top end of the buffer spring (12) is provided with an arc-shaped elastic sheet (10);

the upper end of the arc-shaped elastic sheet (10) is fixedly connected with the outer sealing tube (81);

the inner sealing tube (82) comprises an inner sealing ring a (801) and an inner sealing ring b (802), wherein a fastening plate a (151) is arranged at two end parts of the inner sealing ring a (801), a fastening plate b (152) is arranged at two end parts of the inner sealing ring b (802), fastening holes (16) are formed in the side walls of the fastening plate a (151) and the fastening plate b (152), and a bolt main body (17) is inserted into the fastening holes (16).

2. A seal according to claim 1, wherein: the outer sealing tube (81) comprises an outer sealing ring a (701) and an outer sealing ring b (702), wherein the end part of the outer sealing ring a (701) is provided with a hinge shaft (13), the end part of the outer sealing ring b (702) is provided with a hinge sleeve (14), and the hinge shaft (13) is hinged with the hinge sleeve (14).

3. A seal according to claim 1, wherein: the lower extreme of bolt main part (17) has seted up circular recess (173), bolt pole (171) are installed in the lower extreme middle section of circular recess (173), and in bolt pole (171) tip grafting fastening hole (16), the outside spiro union of bolt pole (171) has fastening nut (178).

4. A seal according to claim 3, wherein: a fixing ring (176) is arranged at the upper end of the outer part of the bolt rod (171), and an annular pressing sheet (174), a spring (177) and an annular rubber sheet (172) are sleeved on the circumferential surface of the bolt rod (171).

5. A seal according to claim 4, wherein: an extrusion sheet (175) is mounted at the lower end edge of the annular sheet (174).

6. A seal according to claim 1, wherein: the sealing sleeve a (6) is fixedly sleeved outside the outer sealing tube (81), the high-pressure shaft (2) is sleeved outside the sealing sleeve a (6), and the sealing sleeve b (9) is fixedly sleeved between the intermediate bearing (1) and the inner sealing tube (82).

7. A seal according to claim 1, wherein: both ends of the high-pressure shaft (2) are provided with rotating ports (4) and are sleeved outside the low-pressure shaft (3).