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Sealing means

A technology of sealing device and sealing ring, applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problem of damage to the first gasket 21, and achieve the effect of suppressing damage

Active Publication Date: 2020-06-30
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this way, the first washer 21 is continuously inserted in a state where the diameter of the first washer 21 is expanded and deformed. Therefore, the outer peripheral portion of the first washer 21 interferes with the opening peripheral portion 52b of the shaft hole 52a, and the first washer 21 may be damaged.

Method used

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  • Sealing means
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Examples

Experimental program
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Embodiment Construction

[0039] The present invention includes the following embodiments.

[0040] (1) For high-pressure applications, there are gaskets for general-purpose rectangular grooves. The washer is composed of a hard washer (first washer) and a soft washer (second washer).

[0041] (2) The soft gasket is installed on the non-pressurized side without clearance. The hard gasket is set smaller than the inner diameter of the subject-side housing (another component) so that insertion is not disturbed. That is, the soft washer is provided without a gap from the side of the groove, and in this state, a hard washer having an outer diameter smaller than the inner diameter of the housing can be attached. That is, by providing a portion in parallel contact with the side of the groove, the soft washer does not move during installation (insertion), so the hard washer is not pushed upward and diameter expansion does not occur.

[0042] (3) The joint surfaces of the hard washer and the soft washer are a...

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Abstract

In the sealing device composed of the seal ring mounted in the mounting groove having a rectangular cross section, the first washer, and the second washer, the diameter of the first washer is prevented from expanding and being damaged during insertion. In order to achieve this, the first gasket is provided in a shape including an end surface portion, a peripheral surface portion, and a slope portion that are in contact with the side surface portion of the mounting groove on the side opposite to the sealing fluid. The second gasket is provided in a shape including an end surface that contacts the seal ring, a peripheral surface that faces the bottom surface of the mounting groove, and a slope. At the inner peripheral end portion of the inclined portion of the second gasket, there is provided an axially perpendicular planar contact portion that contacts the side surface of the mounting groove on the side opposite to the sealing fluid. The inner diameter of the first gasket is set larger than the outer diameter of the contact surface of the second gasket, and the outer diameter of the first gasket is set smaller than the inner diameter of the housing.

Description

technical field [0001] The invention relates to a sealing device related to sealing technology. The sealing device of the present invention is particularly suitable as a high-pressure seal for sealing a high-pressure sealing fluid. Background technique [0002] Currently, as seals for high pressure, known figure 2 Sealing device 1 shown. The sealing device 1 is disposed between two opposing parts 51, 52, and seals in such a way that the sealing fluid on the high pressure side H does not leak to the low pressure side L. The sealing device 1 is composed of the following components: a sealing ring 11. It is installed in the annular installation groove 53 of one of the two parts 51, 52 (such as the shaft) 51, and is in close contact with the other part (such as the housing) 52; the relatively hard first gasket 21 is configured On the side opposite to the sealing fluid of the seal ring 11 (low-pressure side L); and a relatively soft second gasket 31 is arranged between the sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/46F16J15/10
CPCF16J15/104F16J15/166F16J15/48F16J15/125F16J15/3268F16J15/46
Inventor 义经修司边见耕太
Owner NOK CORP