CN208719350U - A kind of anti-beat static seal device of S type - Google Patents

Abstract

The utility model provides a kind of anti-beat static seal device of S type, the sealing device covers on the rotary shaft, and it is mutually fixed with equipment end cap, gap between rotary shaft and equipment end cap is sealed, the anti-beat static seal device of S type is by the inner seal ring that is axially arranged along rotary shaft, outer seal ring, spacer ring, and angularly disposed the first baffle ring and the second baffle ring composition, inner seal ring, outer seal ring, spacer ring, the section that first baffle ring and the second baffle ring are collectively formed is S-type, wherein inner seal ring set contacts sealing on the rotary shaft and with rotary shaft, outer seal ring is mutually fixed with equipment end cap and contacts sealing with equipment end cap, spacer ring is between inner seal ring and outer seal ring, first baffle ring is connected between the right end of inner seal ring and the right end of spacer ring；Second baffle ring is connected between the left end of outer seal ring and the left end of spacer ring.The device favorable sealing property, can be suitable for the beat operating condition that rotation axis has by a relatively large margin.

Description

A kind of anti-beat static seal device of S type

Technical field

The utility model provides a kind of static seal device more particularly to a kind of exists by a relatively large margin suitable for rotation axis Static seal device in beat operating condition, for being sealed to rotation axis.

Background technique

Labyrinth seal is that several belt sealing teeth being arranged successively are set around rotation axis, and a system is formed between tooth and tooth Shut off gap and expansion cavity are arranged, sealed medium generates throttle effect when through the gap in tortuous labyrinth and reaches Drain Resistance The device of purpose.Since there are gap, no solid contacts between the rotor and casing of labyrinth seal, and allow to have thermal expansion, therefore Adapt to high temperature, high pressure, the occasion of high speed-frequency, this seal form be widely used in steam turbine, gas turbine, compressor, The shaft end of air blower and it is at different levels between sealing.

In some scenarios, since the manufacture of rotation axis, installation are lack of standardization, or due to specific rotation mode, having can Capable of leading to rotation axis, in radial direction, there are beats by a relatively large margin in rotary course, in this situation, traditional labyrinth seal Device can not be carried out using not having the effect of sealing not only, but also be likely to result in the damage between rotating ring and stationary ring.Cause This, provides that a kind of sealing performance is excellent, and the sealing device suitable for beat operating condition, and it is urgently to be resolved to become this field Problem.

Summary of the invention

The utility model solves deficiency in the prior art, provides a kind of anti-beat static seal device of S type, the device Favorable sealing property, can be suitable for the beat operating condition that rotation axis has by a relatively large margin.

Realize technical solution used by the utility model above-mentioned purpose are as follows:

A kind of anti-beat static seal device of S type, which covers on the rotary shaft, and mutually fixes with equipment end cap, right Gap between rotary shaft and equipment end cap is sealed, and the anti-beat static seal device of S type along rotary shaft by being axially arranged Inner seal ring, outer seal ring, spacer ring and the first angularly disposed baffle ring and the second baffle ring composition, inner seal ring, external seal The section that ring, spacer ring, the first baffle ring and the second baffle ring are collectively formed is S-type, wherein inner seal ring set on the rotary shaft and with rotation Shaft contacts sealing, outer seal ring and equipment end cap are mutually fixed and sealing is contacted with equipment end cap, spacer ring be located at inner seal ring with Between outer seal ring, the first baffle ring is connected between the right end of inner seal ring and the right end of spacer ring；Second baffle ring is connected to outer close Between the left end of seal ring and the left end of spacer ring.

The inside of inner seal ring and outer seal ring is provided with metallic framework.

Angle between first baffle ring and inner seal ring is 30~60 °, and the angle between the second baffle ring and outer seal ring is 30~60 °.

Compared with prior art, the utility model has the advantage that in static seal device provided in the application, interior Seal ring set contacts sealing on the rotary shaft and with rotary shaft, and outer seal ring is mutually fixed with equipment end cap and contacts with equipment end cap Sealing, spacer ring is between inner seal ring and outer seal ring, inner seal ring, outer seal ring, spacer ring, the first baffle ring and the second baffle ring The section being collectively formed is S-type, therefore the distance between inner seal ring and outer seal ring are able to carry out variation, even if rotation Radial beat is produced during rotation for axis it is also ensured that inner seal ring is fitted in always in rotary shaft is sealed.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the anti-beat static seal device of S type provided by the utility model；

In figure: 1- inner seal ring, 2- outer seal ring, 3- spacer ring, the first baffle ring of 4-, the second baffle ring of 5-, 6- metallic framework, 7- Rotary shaft.

Specific embodiment

Detailed specific description is done to the utility model with reference to the accompanying drawing.

The overall structure of the anti-beat static seal device of S type provided by the utility model is as shown in Figure 1.The sealing device covers It in rotary shaft 7, and mutually fixes, the gap between rotary shaft and equipment end cap is carried out close with equipment end cap (being not drawn into figure) Envelope, the anti-beat static seal device of S type by the inner seal ring 1, outer seal ring 2, spacer ring 3 that are axially arranged along rotary shaft, and The first angularly disposed baffle ring 4 and the second baffle ring 5 composition, inner seal ring, outer seal ring, spacer ring, the first baffle ring and the second baffle ring The section being collectively formed is S-type, and wherein inner seal ring set contacts sealing, outer seal ring and equipment on the rotary shaft and with rotary shaft End cap is mutually fixed and sealing is contacted with equipment end cap, and the inside of inner seal ring and outer seal ring is provided with metallic framework 6.Spacer ring Between inner seal ring and outer seal ring, the first baffle ring is connected between the right end of inner seal ring and the right end of spacer ring；Second Baffle ring is connected between the left end of outer seal ring and the left end of spacer ring.Angle between first baffle ring and inner seal ring is 30~ 60 °, the angle between the second baffle ring and outer seal ring is 30~60 °.

Claims (3)

1. a kind of anti-beat static seal device of S type, which covers on the rotary shaft, and mutually fixes with equipment end cap, to rotation Gap between shaft and equipment end cap is sealed, it is characterised in that: the anti-beat static seal device of S type is by along rotary shaft The inner seal ring, outer seal ring, spacer ring and the first angularly disposed baffle ring that are axially arranged and the second baffle ring composition, interior sealing The section that ring, outer seal ring, spacer ring, the first baffle ring and the second baffle ring are collectively formed is S-type, and wherein inner seal ring is covered in rotary shaft Sealing above and with rotary shaft is contacted, outer seal ring is mutually fixed with equipment end cap and sealing is contacted with equipment end cap, and spacer ring is located at interior Between sealing ring and outer seal ring, the first baffle ring is connected between the right end of inner seal ring and the right end of spacer ring；Second baffle ring connects It is connected between the left end of outer seal ring and the left end of spacer ring.

2. the anti-beat static seal device of S type according to claim 1, it is characterised in that: inner seal ring and outer seal ring Inside is provided with metallic framework.

3. the anti-beat static seal device of S type according to claim 1, it is characterised in that: the first baffle ring and inner seal ring it Between angle be 30~60 °, the angle between the second baffle ring and outer seal ring is 30~60 °.