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CN-224201114-U - Elastic sealing element

CN224201114UCN 224201114 UCN224201114 UCN 224201114UCN-224201114-U

Abstract

The utility model relates to the technical field of mechanical sealing devices, and discloses an elastic sealing element, which comprises: the sealing device comprises a connecting body, wherein two ends of the connecting body are respectively connected with supporting pieces, two supporting pieces are respectively connected with sealing bodies, the two sealing bodies are propped against each other, the sealing piece is placed into a sealing space of equipment to form double-layer sealing, the first-layer sealing is formed by the outer side wall of the sealing piece and the upper and lower inner side walls of the sealing space, the second-layer sealing is formed by the two sealing bodies against each other, and if the largest part of the connecting body subjected to stress deformation generates cracks to form small holes, the sealing bodies play a sealing role, so that the service life and the sealing performance of the sealing piece are prolonged.

Inventors

  • LI SHENLONG
  • SONG ZHIHAO
  • SHI MINGZHI
  • LIU BO
  • YU JIAYI

Assignees

  • 中国航发长江动力有限公司

Dates

Publication Date
20260505
Application Date
20250604

Claims (7)

  1. 1. The elastic sealing piece is characterized by comprising a connecting body (1), wherein two ends of the connecting body (1) are respectively connected with supporting pieces (2), two supporting pieces (2) are respectively connected with sealing bodies (3), and the two sealing bodies (3) are propped against each other.
  2. 2. The elastic seal according to claim 1, characterized in that the seal (5) is of hollow annular structure, the connecting body (1), the two supporting elements (2) and the two sealing bodies (3) forming a sealing chamber (4) inside the seal (5).
  3. 3. An elastic seal according to claim 2, characterized in that the two support members (2) form an angle therebetween towards the inside of the seal (5), and that the two support members (2) abut when the connecting body (1) is compressed towards the centre of the sealing chamber (4).
  4. 4. A resilient seal according to claim 3, wherein the seal (5) has a heart-shaped cross section, the two connectors (1) are axially arranged and parallel to each other, and the connectors (1) have an arcuate configuration.
  5. 5. The elastomeric seal of claim 4 wherein said included angle is in the range of 120 ° -150 °.
  6. 6. The elastic seal according to claim 5, characterized in that the seal (5) is of integrally formed construction.
  7. 7. The elastic seal according to claim 6, characterized in that the sealing chamber (4) is internally filled with a sealing medium.

Description

Elastic sealing element Technical Field The utility model relates to the technical field of mechanical sealing devices, and discloses an elastic sealing element. Background In the fields of mechanical engineering and gas and fluid transmission, an elastic sealing ring is used as a core component for preventing gas or fluid from leaking, and the performance of the elastic sealing ring directly influences the safety and reliability of equipment operation. The elastic sealing ring in the prior art generally adopts a C-shaped sealing ring structure, and the structure can only realize single-layer sealing. In the practical use process, the C-shaped sealing ring can be stressed due to abrasion or loading, and air holes can be formed on the surface or in the stress concentration position of the C-shaped sealing ring. Once the air holes appear, the sealing ring is invalid, and the whole sealing ring needs to be replaced. This not only increases maintenance costs, but also may affect the normal operation of the device due to untimely replacement, and even cause safety accidents. Accordingly, there is a need for an elastomeric seal that addresses the above-described problems. Disclosure of utility model The utility model aims to provide an elastic sealing element so as to solve the technical problems that a sealing ring can only realize single-layer sealing, and a C-shaped sealing ring is invalid due to long-time abrasion or small air holes on the surface of a stress concentration position. In order to achieve the technical effects, the elastic sealing piece is characterized by comprising a connecting body, wherein two ends of the connecting body are respectively connected with supporting pieces, two supporting pieces are respectively connected with sealing bodies, and the two sealing bodies are propped against each other. As a preferred embodiment, the sealing member is a hollow annular structure, and the connecting body, the two supporting members and the two sealing bodies form a sealing chamber inside the sealing member. As a preferred embodiment, the two support members form an angle towards the inner side of the sealing member, and when the connecting body is compressed towards the center of the sealing chamber, the two support members are propped against each other. In the embodiment, the sealing performance of the traditional sealing ring is excessively dependent on the deformation quantity of an elastic material, plastic deformation or fatigue fracture is easy to occur when radial load is born for a long time, a gap is formed at a sealing interface, and particularly under the impact of high-pressure fluid, the elastic body is relaxed due to excessive compression, the leakage rate is exponentially increased along with the service time. As a preferred embodiment, the cross section of the sealing element is of a heart-shaped structure, the two connecting bodies are axially distributed and mutually parallel, and the connecting bodies are of arc-shaped structures. As a preferred embodiment, the included angle is in the range of 120 DEG to 150 deg. As a preferred embodiment, the seal is of unitary construction. As a preferred embodiment, the sealed chamber is internally filled with a sealing medium. Compared with the prior art, the utility model has the following beneficial effects: the sealing element is placed in the sealing space of the equipment, double-layer sealing can be formed, the first-layer sealing is formed by the outer side wall of the sealing element and the upper and lower inner side walls of the sealing space, the second-layer sealing is formed by abutting two sealing bodies, and if the largest part of the connecting body subjected to stress deformation generates cracks and small holes, the sealing bodies play a sealing role, so that the service life and the sealing performance of the sealing element are improved. Drawings FIG. 1 is a schematic view of a seal of the present utility model; FIG. 2 is a cross-sectional view of the A-A seal of FIG. 1; FIG. 3 is a cross-sectional view of the A-A seal of FIG. 1 in a compressed state; Reference numerals: 1. The device comprises a connecting body, a supporting piece, a sealing body, a sealing cavity and a sealing piece. Detailed Description The present utility model will be described in further detail with reference to the following examples and drawings. It should not be construed that the scope of the above subject matter of the present utility model is limited to the following embodiments, and all techniques realized based on the present utility model are within the scope of the present utility model. Referring to fig. 1, embodiment 1, an elastic sealing member includes a connector 1, two ends of the connector 1 are respectively connected with a support member 2, two support members 2 are respectively connected with a sealing member 3, and the two sealing members 3 are abutted against each other. In the preferred embodiment of this example, the sealing