CN202545182U

CN202545182U - Dry gas seal for synthesis gas compressor

Info

Publication number: CN202545182U
Application number: CN2012201822599U
Authority: CN
Inventors: 张鸿武; 杨梅
Original assignee: Chengdu Sailehua New Motor Coltd
Current assignee: Chengdu Huaxin Sealing Co., Ltd.
Priority date: 2012-04-26
Filing date: 2012-04-26
Publication date: 2012-11-21
Anticipated expiration: 2022-04-26

Abstract

The utility model discloses a dry gas seal for a synthesis gas compressor, wherein the dry gas seal comprises an outer pressure cover, an inner pressure cover, grooved rotary rings and a fixed ring and is characterized in that the inner pressure cover and the outer pressure cover are screwed together through threads to form an integrated body; a rotary shaft sleeve is fixed on a shaft sleeve with a thread through a locking nut; the shaft sleeve is arranged on a rotating shaft of equipment; and a metal hoop is embedded at the excircle of each of the two grooved rotary rings. By means of improvement provided by the utility model, the dry gas seal by which a floating-ring seal of the synthesis gas compressor can be replaced is provided; the service life of a machine seal can be prolonged; furthermore, oil consumption is reduced; the field environment is greatly improved; the metal hoop (metal ring) is embedded on a movable ring; therefore, the dry gas seal cannot go so far as to fly in a mess when materials are crushed; some small cracks can also be bore; and influence is minimized.

Description

A kind of synthesic gas compressor is used dry gas seals

Technical field

The utility model relates to the sealing on a kind of synthesic gas compressor that is applied to chemical industry, specifically is the dry gas seals on a kind of synthesic gas compressor that is applied to chemical industry.

Background technique

At present, on synthesic gas compressor, extensively adopt floating-ring seal, because the floating-ring seal fuel consumption is big, and has certain pollution to environment, checking maintenance and control system bother very much, and operator and maintenance man's workload are big.Such as because long-time high speed rotating, rotating ring receives centrifugal forces affect for a long time, if quality of materials is not very stable, may occur crackedly, has a strong impact on the operation of dry gas seals, so need improvement.

The model utility content

The purpose of the utility model is to overcome the deficiency that existing floating-ring seal exists; At this a kind of dry gas seals of replaceable synthesic gas compressor floating-ring seal is provided; When material is cracked, be unlikely to disorderly to fly, can also bear some little crackles, reduce to its influence minimum.

The utility model is to realize like this; Construct a synthesic gas compressor and use dry gas seals, comprise being provided with outer gland, internal gland, fluting rotating ring and stationary ring, it is characterized in that: be spun on by screw thread between the inside and outside gland and become as a whole together; Rotary sleeve is fixed on the threaded axle sleeve by locknut; This axle sleeve is arranged on the equipment running shaft, and said fluting rotating ring comprises two, at each fluting rotating ring cylindrical embedded with metal hoop.

The advantage of the utility model is: through the improvement of the utility model; At this a kind of dry gas seals of replaceable synthesic gas compressor floating-ring seal is provided; In the rotating ring embedding metal ferrules (metal ring); Be unlikely to when material is cracked disorderly to fly, can also bear some little crackles, reduce to its influence minimum.Can also the prolongation machine service time of envelope, and reduce fuel consumption, improved site environment greatly.Dry gas seals long service life, stable and reliable operation, quantity of gas leakage be little, can realize that zero of medium overflows and seal auxiliary system simple, reliable, do not need maintenance in the use.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is a fluting rotating ring structural representation.

Among the figure: 101, fluting rotating ring, 102, stationary ring, 103, spring, 104, internal gland, 105, outer gland; 106, screwed axle sleeve, 107, metal ferrules, 108, throw-out collar, 109, the O circle, 110, sealing O circle; 111, running shaft, 112, swivelling chute, 113, stop pin, 114, driving pin, 115, rotary sleeve; 116, internal gland and outer gland screw thread, 117, blanket gas inlet, 118, the stop pin in the equipment cavity, 119, nut.

Embodiment

Below in conjunction with accompanying drawing the utility model is made detailed description:

In order to overcome the deficiency that floating-ring seal exists in the existing technology; The utility model provides a kind of synthesic gas compressor to use dry gas seals through improving at this; As shown in Figure 1: the said dry gas seals of the utility model includes outer gland 105, internal gland 104, fluting rotating ring 101, stationary ring 102 and spring 103; Wherein inside and outside gland 104, be spun on by screw thread between 105 and become as a whole together, rotary sleeve 115 is fixed on the threaded axle sleeve 106 by locknut 119, and this axle sleeve 106 is arranged on the equipment running shaft 111; Said fluting rotating ring 101 comprises two, at each fluting rotating ring 101 cylindrical embedded with metal hoop 107.The said dry gas seals form of the utility model be double movable ring, face-to-face, the structural type of spring state type.Swivelling chute 112 designs are on the rotating ring sealing surface.During 101 rotations of fluting rotating ring, between sealing surface, can produce air film timely and effectively, dynamic and static ring is separated.

The dry gas sealing structure form be double movable ring, face-to-face, the structural type of spring state type.During the rotating ring rotation just of fluting rotating ring 101,, after feeding blanket gas, between sealing surface, can produce air film timely and effectively, dynamic and static ring is separated because be carved with the swivelling chute 112 of the band degree of depth on the fluting rotating ring 101.So-called stationary ring is actionless ring; As shown in Figure 1; Inside and outside stationary ring is fixedly prevented to rotate by the stop pin on the inside and outside gland 113 respectively; And outer gland 105 is by being bolted on the equipment, and internal gland 104 becomes as a whole together by being spun on by screw thread 116 between the 108 inside and outside glands of the stop pin in the equipment cavity.Inside and outside rotating ring is fixed on the rotary sleeve 115 by driving pin 114 respectively, and rotary sleeve 115 is fixed on the newly-designed threaded axle sleeve 106 by locknut 119, so rotating ring rotates with equipment.

Because the dry gas seals rotating ring will be fixed on the equipment running shaft 111; Former design adopts Cock screw to be fixed on the equipment running shaft just, but GB601 synthesic gas compressor chamber pressure is up to 10MPa, therefore needs to adopt the screw thread transmission of screwing; For protecting the equipment running shaft injury-free; Designed a threaded axle sleeve 106, these axle sleeve 106 hot chargings are on equipment running shaft 111, as the fixing critical piece that reaches transmission of dry gas seals rotating ring.Become integral body with equipment running shaft 111 from now on, need not dismantle, only need to change the unit loading type dry gas seals and get final product, for checking maintenance provides convenience.

During normal design, the blanket gas of dry gas seals will be higher than the medium atmospheric pressure in the compressor cavity of dry gas seals installation place, but the GB601 synthesic gas compressor instantaneous high pressure can occur when stopping; This moment, dry gas seals was in the back-pressure state, and former design is on stationary ring, to open O shape ring recess, when being reacted, was easy to so from groove, extruding; After back-pressure, dry gas seals is returned to normal state again under the effect of blanket gas, and the O shape circle of this moment just returns less than in the original groove; The sealing of throw-out collar and stationary ring is just destroyed so; Can only shut down the dismounting dry gas seals could recover, and dry gas seals of dismounting bothers very much, so improve at this; Processing O shape ring recess on throw-out collar 108; Throw-out collar 108 encloses 109 contacting points with O and forms the counnter attack laminated structure, after back-pressure, recovers just often can reset rapidly, has guaranteed the unit long-term operation.

Because long-time high speed rotating, rotating ring receives centrifugal forces affect for a long time, if quality of materials is not very stable; May occur crackedly, have a strong impact on the operation of dry gas seals, in order to eliminate the cracked influence of this unexpected material to dry gas seals; In rotating ring 101 embeddings a metal ferrules 107 (metal ring); Purpose is exactly disorderly to fly in order when material is cracked, to be unlikely to, and can also bear some little crackles, reduces to its influence minimum.

Claims

1. a synthesic gas compressor is used dry gas seals; Comprise and be provided with outer gland (105), internal gland (104), fluting rotating ring (101) and stationary ring (102); It is characterized in that: be spun on by screw thread between the inside and outside gland (104,105) and become as a whole together; Rotary sleeve (115) is fixed on the threaded axle sleeve (106) by locknut (119); This axle sleeve (106) is arranged on the equipment running shaft (111), and said fluting rotating ring (101) comprises two, at each fluting rotating ring (101) cylindrical embedded with metal hoop (107).