CN205841768U

CN205841768U - A kind of dry gas sealing structure being applicable to vibration detection

Info

Publication number: CN205841768U
Application number: CN201620650515.0U
Authority: CN
Inventors: 殷国富; 刘蕴; 殷鸣; 徐雷
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2016-12-28
Anticipated expiration: 2026-06-28

Abstract

The utility model discloses a kind of dry gas sealing structure being applicable to vibration detection, including axle sleeve, rotating ring, stationary ring, throw-out collar and spring base, circular groove is all had on described stationary ring and throw-out collar, for firm placement vibration acceleration sensor, symmetrical through hole is had, in order to guiding sensor holding wire on described throw-out collar and spring base.This structure do not affect dry gas seals properly functioning on the basis of, the problem efficiently solving the detection of dry gas seals Workpiece vibration under operating mode.Feature of the present utility model is simple in construction, it is simple to processing, is not affecting in dry gas seals under conditions of axial motion workpiece nominal situation runs, it is achieved the measurement of its Vibration Condition.

Description

A kind of dry gas sealing structure being applicable to vibration detection

Technical field

This utility model belongs to dry gas seals technical field, particularly to a kind of dry gas seals knot being applicable to vibration detection Structure.

Background technology

Dry gas seals is a kind of non-contact mechanical seal, is widely used in the works such as centrifugal pump, blender and compressor In industry process units, during work, can form micron-sized air film between rotating ring and stationary ring end face, the minor variations of air-film thickness has Dry gas seals may be caused to lose efficacy.

Being affected by external condition, dry gas seals is axially run workpiece and can be produced certain periodicity under operating mode and axially shake Dynamic, thus change air-film thickness, but because the dry gas seals workpiece spacing of conventional design is the compactest, sensor is difficult to fix tightly Gu, and holding wire is easily by problems such as rotating shaft are involved in so that the vibration measurement that dry gas seals carries out working condition is difficult to.

Utility model content

The purpose of this utility model is: for the problem of above-mentioned existence, it is provided that a kind of not affect dry gas seals axial Vibration workpiece normal operation and be applicable to the dry gas sealing structure of vibration detection.

The technical solution of the utility model is achieved in that a kind of dry gas sealing structure being applicable to vibration detection, its It is characterised by: include axle sleeve, rotating ring, stationary ring, throw-out collar and spring base, between described axle sleeve and rotating ring, described stationary ring and throw-out collar Between and between described throw-out collar and spring base all with c-type sealing ring, identical bullet is installed between described throw-out collar and spring base Spring.

The dry gas sealing structure being applicable to vibration detection described in the utility model, its described stationary ring and throw-out collar are axially external On all have the circular groove of symmetry, fixing for vibration acceleration sensor, described throw-out collar and spring base have symmetrical through hole, Described through hole is for deriving sensor signal lines from inside to outside, and the inside extension elongation of axially extending bore of described spring base can not be close Throw-out collar extreme position and protruding, the axial vibration signal of described stationary ring and throw-out collar is recorded by acceleration transducer, by letter Number line reaches signal collection processor.

The dry gas sealing structure being applicable to vibration detection described in the utility model, its described stationary ring and the axial circular of throw-out collar Connected in star fixing for acceleration transducer, for preventing the acceleration transducer measuring stationary ring and throw-out collar from mutually touching, stationary ring With throw-out collar when mounted it is noted that the groove location that staggers, depth of groove will be close to the half of acceleration transducer height, groove surface The long-pending acceleration transducer face area that is greater than, described throw-out collar is used for sending out signals line with the through hole on spring base, outside holding wire Connecing signal collection processor, described throw-out collar to distinguish the groove position of corresponding stationary ring and throw-out collar with the through hole on spring base.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is stationary ring positive and negative structural representation.

Fig. 3 is throw-out collar positive and negative structural representation.

Fig. 4 is spring seat structure schematic diagram.

Fig. 5 is that stationary ring, throw-out collar and spring base install attention schematic diagram.

Labelling in figure: 1 is axle sleeve, 2 is rotating ring, and 3 is stationary ring, and 4 is c-type sealing ring, and 5 is throw-out collar, 6 springs, and 7 is spring Seat, 8 is groove, and 9 is through hole, and 10 is bolt slot, and 11 is spring groove.

Detailed description of the invention

Below in conjunction with the accompanying drawings, this utility model is described in detail, in order to make the purpose of this utility model, technical scheme And advantage is clearer, below in conjunction with drawings and Examples, this utility model is further elaborated, it should reason Solving, specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.

As it is shown in figure 1, a kind of dry gas sealing structure being applicable to vibration detection, it is characterised in that: include axle sleeve, rotating ring, Stationary ring, throw-out collar and spring base, between described axle sleeve and rotating ring, between described stationary ring and throw-out collar and described throw-out collar and spring base it Between all with c-type sealing ring, 12 identical springs are installed between described throw-out collar and spring base.

Wherein, described axle sleeve rotates with rotating shaft, and rotating ring rotates with in being nested into axle sleeve, and the processing of described rotating ring has Helicla flute, forms air film in gas is pumped into groove by helicla flute when rotating ring rotates, described throw-out collar and stationary ring are nested into spring base successively In, spring base is bolted on extraneous support maintain static by 10, and 12 identical springs are respectively put into the bullet of spring base In spring groove, during gas film behavior, stationary ring is promoted, and spring is in compressive state all the time so that throw-out collar is with the coaxial fortune of stationary ring Dynamic, stationary ring records input signal line, holding wire with the vibration signal of throw-out collar by being fixed on the acceleration transducer of inside grooves Drawn by the clear opening of certain length and seal inside.

As shown in Figure 2, Figure 3 and Figure 4, described stationary ring reverse side internal ring cascaded surface is relatively big, is used for processing circular groove, described in push away The circular groove that the processing of ring afterbody is smooth and identical in the processing of this position and stationary ring, described groove senses for acceleration of vibration Device fixing, described throw-out collar has symmetrical through hole, for deriving the holding wire of sensor on stationary ring, described spring base axial the most also It is machined with symmetrical through hole, the extreme position that the inside extension elongation of its through hole can not move right close to throw-out collar, protruding one Point.

Wherein, described stationary ring is used for placing acceleration transducer with the groove of throw-out collar, does not drops for ensureing that it consolidates, it is necessary to Putting into full-filling part fixing glue around the acceleration transducer of groove, described groove area should be greater than acceleration end face used About the 50% of area, the degree of depth is the half of acceleration transducer height, Gu glue is filled in the part between sensor and groove, Avoiding full-filling at sensor end face, fixing glue thickness uniformly and not exceeds recess edge as far as possible.

As it is shown in figure 5, for prevent the acceleration transducer measuring described stationary ring and throw-out collar from mutually touching, stationary ring and throw-out collar exist It is noted that the groove location that staggers during installation, both grooves axially can not be parallel, and described throw-out collar and the through hole on spring base are used for passing Defeated stationary ring and the holding wire of throw-out collar vibration signal, when installing throw-out collar, the through hole that should make throw-out collar not only will be with the groove location of stationary ring Corresponding, also to make it corresponding with the through hole on spring base, on the groove of throw-out collar to be ensured and spring base Another pair through hole is corresponding, and the holding wire length in reserve within dry gas seals is unsuitable long, in order to avoid being wound around with rotating shaft.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims

1. the dry gas sealing structure being applicable to vibration detection, it is characterised in that: include axle sleeve (1), rotating ring (2), stationary ring (3), throw-out collar (5) and spring base (7), between described axle sleeve (1) and rotating ring (2), between described stationary ring (3) and throw-out collar (5) and All with sealing ring (4) between described throw-out collar (5) and spring base (7), between described throw-out collar (5) and spring base (7), bullet is installed Spring (6).

Dry gas sealing structure the most according to claim 1, it is characterised in that: all there is circle on described stationary ring (3) and throw-out collar (5) Connected in star (8), places vibration acceleration sensor for firm, described throw-out collar (5) and spring base (7) has symmetrical through hole (9), So that guiding sensor holding wire, the axial vibration of stationary ring (3) and throw-out collar (5) is recorded by acceleration transducer, passes through holding wire Reach signal collection processor.