Seal structure design method for narrow sealing plane box parts with complex shape

A linear sealing, sealing plane technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., to achieve the effect of easy implementation, good effect, and reliable sealing

Inactive Publication Date: 2009-03-18
KEENLAND TIANJIN PRECISION MFG
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to solve the reliability problem of leakage detection and sealing of box parts with complex tr

Method used

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  • Seal structure design method for narrow sealing plane box parts with complex shape
  • Seal structure design method for narrow sealing plane box parts with complex shape
  • Seal structure design method for narrow sealing plane box parts with complex shape

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Embodiment 1

[0025] The present invention makes two improvements to the standard O-ring sealing technology, so as to meet the needs of complex track and narrow plane sealing.

[0026] 1. Improved design of the groove size of the O-ring. Figure 2. In order to achieve the sealing accuracy of the narrow plane with complex tracks, the groove width dimension of the sealing groove 2 where the O-ring 3 is placed is improved, and the depth t of the groove remains unchanged, and the standard depth is still used. The design formula of the groove width B is: B=(1+3.5%~1+4.5%)d, where d is the cross-sectional diameter of the O-ring.

[0027] 2. Improved design of the actual length of the O-ring. Since the width of the sealing groove has changed, and the O-ring is an elastic material, its radial elongation is transferred to the length elongation along the center line of the O-ring under the action of sealing pressure, then the standard O-ring The length of the sealing ring is obviously too long in t...

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Abstract

The invention relates to a method for designing a linear sealing structure of box type parts provided with narrow (sealed) planes with complex shapes. When a standard O ring sealing structure is used for performing sealing on a narrow sealed plane with a complex shape, if the touched sealed plane has the complex shape and is too narrow, the sealing ring replacement or that the standard sealing groove width is bigger than that of the sealed plane is easily caused, so that the sealing cannot be formed. The invention develops a method for realizing sealing on the narrow sealed plane with the complex shape, which is different from the method for standard-sized O rings and grooves. Practices show that the linear sealing structure has good effect when the linear sealing structure is applied to the narrow sealed plane with the complex shape. The design method mainly comprises: firstly, the design of the width B of a sealing groove, which is to make B equal to 1.035 to 1.045 times of d, wherein d is the diameter of the cross section of an O-shaped sealing ring, and the depth t of the sealing groove is kept unchanged and still adopts the standard depth; and secondly, the design of the actual length L of the O-shaped sealing ring, which is to make L equal to 0.990 to 0.089 times of L0, wherein L0 is the theoretical length of the O-shaped sealing ring.

Description

【Technical field】: [0001] The invention belongs to the technical field of sealing for leakage detection of box-type parts. 【Background technique】: [0002] The box is the basic part of a machine or component. It assembles the shafts, sleeves, gears and other related parts in the machine or component into a whole, so that they can maintain the correct mutual position and transmit them in a coordinated manner according to a certain transmission relationship. movement or motivation. Therefore, the processing quality of the box will directly affect the accuracy, performance and life of the machine or components. [0003] Nowadays, the die-casting molding process is mostly used for box parts, and casting defects such as slag inclusions, cracks and pores will inevitably occur during the processing. If these defective parts are assembled into the whole machine, air leakage and leakage will occur due to poor sealing performance. Liquid, affect the reliability and safety of machine...

Claims

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Application Information

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IPC IPC(8): F16J15/06
Inventor 陈钢毅滕献银刘基兴
Owner KEENLAND TIANJIN PRECISION MFG
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