CN202484456U

CN202484456U - Sealing structure with movable joint displacing relatively

Info

Publication number: CN202484456U
Application number: CN2011205376056U
Authority: CN
Inventors: 孙伟; 杨灵; 孙敏; 赵卫军; 孙奇
Original assignee: DEC Dongfang Turbine Co Ltd
Current assignee: DEC Dongfang Turbine Co Ltd
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2012-10-10
Anticipated expiration: 2021-12-21

Abstract

The utility model provides a sealing structure with a movable joint displacing relatively. The movable joint comprises a hole part and a shaft part and is in a hole-shaft matching structure; and a barrel-shaped sealing pad made of soft and elastic materials is arranged in a gap between the matching surfaces. The sealing structure is characterized in that the sealing structure is provided with a section of axial fold to form an elastic buffering structure; the two ends of the sealing pad are respectively and fixedly connected on the shaft part and the hole part to seal the gap; and the fixed connecting mode of the sealing pad and the joint parts is a sheathing-clamping mode or a flange-connecting mode. The sealing structure provided by the utility model has the advantages that when the hole and the shaft part generate relative displacement, and the fold is drawn or compressed so as to adapt to the displacement change of the joint parts automatically and maintain constant sealing effect; and a sealing gasket and the joint parts do not generate friction, so that the damage is not easy.

Description

Sealing configuration with Active Interface of relative displacement

Technical field

The utility model relates to a kind of sealing configuration, specifically is a kind of sealing configuration with Active Interface of relative displacement.

Background technique

In commercial plant; The Active Interface that often has some to have relative displacement needs sealing; Complicated bearing housing for example shown in Figure 1 has interior case and outer container, and interior case oil filling pipe will pass through outer container and could be connected with interior case; Gap between interior case oil filling pipe and outer container perforation needs sealing, to prevent the oil leak in the outer container; And during bearing housing work vibrations are arranged, between the inside and outside case relative displacement is arranged, interior case oil filling pipe has axially reciprocating in the outer container perforation, makes the sealing difficulty at this place strengthen.

At present,, rely on the elastic force swelling gap of seal ring, play seal action normally at sealing surface setting " O " shape rubber seal or teflin ring.Owing to be motive sealing, seal ring and oil filling pipe have sliding friction, behind ring wear, promptly can lose efficacy, and change frequent.

Summary of the invention

For addressing the above problem, the utility model provides a kind of sealing configuration with Active Interface of relative displacement, and Sealing and interface part do not rub, and be not fragile, and its technological scheme is:

A kind of sealing configuration with Active Interface of relative displacement, this Active Interface comprise hole part and axle part, are hole, axle cooperating structure; Gap between the fitting surface is provided with the tubular sealing gasket that soft elastic material is processed, and it is characterized in that, this tubular sealing gasket has one section axial fold; Form elastic buffer structure, the two ends of sealing gasket are fixed in respectively on a part and the hole part, and the gap is sealed; When hole part and axle part generation relative displacement; Fold is stretched or compressed, and adapts to the change in displacement of interface part automatically, keeps sealing effect constant.

Said sealing gasket is suit clamp band type or flange join type with the mode that is fixedly connected of interface part.

The utility model has designed the buffer structure of accordion at the gasket seal middle part; This buffer structure work the time can change shape automatically to adapt to the working state of variation with the relative movement of interface part; Gasket seal and interface part do not rub, and be not fragile.

Description of drawings

Fig. 1 is the structural representation (sealing configuration of bearing housing outer container and interior case oil filling pipe) of an instance of the utility model;

Fig. 2 is the structural representation of sealing gasket among Fig. 1;

Fig. 3 is the plan view of Fig. 2;

Label is represented among the figure: case, 6-outer container (hole part), a-suit interface, b-flange-interface, c-fold in 1-oil-feed assembly (axle part), 2-clip, 3-flange pressing plate, 4-sealing gasket, the 5-.

Embodiment

Sealing configuration with bearing housing and its oil filling pipe is an example below, specifies the utility model.

As shown in Figure 1; This bearing housing has interior case 5, outer container 6; The mouthpiece of oil-feed assembly 1 passes through outer container 6 and is connected with interior case 5, and the mouthpiece of this oil-feed assembly 1 and outer container perforation are typical hole, axle cooperating structure, and the mouthpiece of oil-feed assembly 1 is a part; Outer container 6 is hole parts, and the gap between the two needs sealing.

Characteristics referring to Fig. 2, Fig. 3 the utility model; Be that a tubular sealing gasket 4 is set in this gap; This tubular sealing gasket 4 has one section axial fold c, and this fold has compression and lax elastic potential energy, forms elastic buffer structure; The two ends of sealing gasket are fixedly connected on respectively on a part and the hole part, and the gap is sealed.Sealing gasket 4 is used soft elastic material, all can like rubber, nylon, teflon etc.

Sealing gasket 4 is suit clamp band type or flange join type with the mode that is fixedly connected of interface part.

In this example; A port (a port) of sealing gasket 4 is sleeved on the mouthpiece of oil-feed assembly 1, and is fixed by clip 2 bandings, and another port (b port) flange becomes flange; And be pressed abd fixed on the aperture of outer container 6 through bolt by flange pressing plate 3; Like this, the gap between the mouthpiece of oil-feed assembly 1 and outer container 6 perforation is just by sealing gasket 4 sealings, and the lubricant oil in the outer container 6 can not spill.Sealing gasket 4 can not rub with the mouthpiece of oil-feed assembly 1 and the perforation of outer container 6 yet, and is not fragile.

When displacement to axial took place for the mouthpiece of oil-feed assembly 1 and outer container 6, the fold c of sealing gasket 4 was stretched or compressed, and adapts to the change in displacement of the mouthpiece and the outer container 6 of oil-feed assembly 1 automatically.

For ease of assembling, the gap between the mouthpiece of oil-feed assembly 1 and outer container 6 perforation should be stayed bigger.

Claims

1. sealing configuration with Active Interface of relative displacement, this Active Interface comprise a hole part and an axle part, are hole, axle cooperating structure; Gap between the fitting surface is provided with the tubular sealing gasket that soft elastic material is processed, and it is characterized in that, this tubular sealing gasket has one section axial fold; Form elastic buffer structure, the two ends of sealing gasket are fixed in respectively on a part and the hole part, and the gap is sealed; When hole part and axle part generation relative displacement; Fold is stretched or compressed, and adapts to the change in displacement of interface part automatically, keeps sealing effect constant.

2. the sealing configuration with Active Interface of relative displacement as claimed in claim 1 is characterized in that, said sealing gasket is suit clamp band type or flange join type with the mode that is fixedly connected of interface part.