CN204944544U - A kind of dry gas sealing structure based on gas turbine meter - Google Patents
A kind of dry gas sealing structure based on gas turbine meter Download PDFInfo
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- CN204944544U CN204944544U CN201520643451.7U CN201520643451U CN204944544U CN 204944544 U CN204944544 U CN 204944544U CN 201520643451 U CN201520643451 U CN 201520643451U CN 204944544 U CN204944544 U CN 204944544U
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- bearing
- bearing seat
- axle sleeve
- baffle plate
- sealing structure
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Abstract
The utility model relates to a kind of dry gas sealing structure based on gas turbine meter, its technical characterstic is: comprise impeller, central shaft, front bearing gland, bearing seat, axle sleeve baffle plate, sender set and rear bearing gland, bearing seat is installed on center shaft, front bearing retainer and rear bearing cover are arranged on the central shaft of the front-end and back-end of bearing seat respectively, axle sleeve baffle plate is arranged on the front end of bearing seat and front bearing gland and is fixed together with bearing seat, on the central shaft that impeller is arranged on axle sleeve baffle plate front end and fixing on center shaft, sender set is arranged on rear bearing cover rear end and fixes on center shaft.The utility model has the simple feature of structure, not by the restriction of speed, temperature, can realize zero effusion of medium, stable and reliable operation; Dry gas sealing structure wearing and tearing are little, while raising bearing life, greatly reduce the maintenance cost of product; Have the advantages that sealing power consumption is little, can effectively prevent impurity from entering bearing chamber.
Description
Technical field
The utility model belongs to gas turbine meter technical field, especially a kind of dry gas sealing structure based on gas turbine meter.
Background technology
Traditional gas turbo flow meter adopts O type rubber seal to bearing seal usually, but when being applied to different medium and process environments, often occur the phenomenons such as oxidation, distortion, resilience variation, embrittlement, cause sealing to be deteriorated, dust granules enters damage bearing.And, friction and wear is the problem certainly existed in contact-type motive seal, and the seal of contact-type motive seal contacts with by seal, produces friction owing to there being relative motion, cause the wearing and tearing of heating and piece surface, this is the main cause causing leakage and seal to damage.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of dry gas sealing structure based on gas turbine meter, solves the problem that air turbine bearing life is short and maintenance cost is high.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of dry gas sealing structure based on gas turbine meter, comprise impeller, central shaft, front bearing gland, bearing seat, axle sleeve baffle plate, sender set and rear bearing gland, described bearing seat is installed on center shaft, described front bearing retainer and rear bearing cover are arranged on the central shaft of the front-end and back-end of bearing seat respectively, described axle sleeve baffle plate is arranged on the front end of bearing seat and front bearing gland and is fixed together with bearing seat, on the central shaft that described impeller is arranged on axle sleeve baffle plate front end and fixing on center shaft, described sender set is arranged on rear bearing cover rear end and fixes on center shaft.
And, the gas turbine meter casing of described central shaft rear end is provided with a filter assemblies.
And described impeller is fixing on center shaft by nut; Described sender set is fixing on center shaft by nut.
And described axle sleeve baffle plate is fixed together by cross recessed countersunk head sscrew and bearing seat.
Advantage of the present utility model and good effect are:
The utility model has the simple feature of structure, not by the restriction of speed, temperature, can realize zero effusion of medium, stable and reliable operation; Dry gas sealing structure wearing and tearing are little, while raising bearing life, greatly reduce the maintenance cost of product; Have the advantages that sealing power consumption is little, be only about 5% of contacting mechanical seal, fluid-encapsulated not by oil pollution, be generally used for the rotating machinery sealing that pressure reduction is little, pressurized air is utilized to come the gap of shutoff turning axle, housing processes ring groove, is entered the gap of rear shutoff turning axle by pressurized air, enter bearing chamber in order to prevent impurity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sealing principle schematic diagram of the present utility model;
In figure, 1-impeller, 2-nut, 3-central shaft, 4-front bearing gland, 5-bearing seat, 6-axle sleeve block plate, 7-sender set, 8-filter assemblies, 9-rear bearing gland, 10-cross recessed countersunk head sscrew, 11-gas turbine meter casing.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
Based on a dry gas sealing structure for gas turbine meter, as shown in Figure 1, impeller 1, central shaft 3, front bearing gland 4, bearing seat 5, axle sleeve baffle plate 6, sender set 7, rear bearing gland 9 is comprised.Described bearing seat is installed on center shaft, described front bearing retainer and rear bearing cover are arranged on the central shaft of the front-end and back-end of bearing seat respectively, described axle sleeve baffle plate is arranged on the front end of bearing seat and front bearing gland, and is fixed together by cross recessed countersunk head sscrew 10 and bearing seat.Described impeller is arranged on the central shaft of the front end of axle sleeve baffle plate, fixing on center shaft by nut 2.Described sender set is arranged on rear bearing cover rear end and is fixed on center shaft by nut 2.The gas turbine meter casing of central shaft rear end is provided with a filter assemblies.
Principle of work of the present utility model is: hermetic seal Main Basis labyrinth seal structure designs, and is made up of stationary labyrinth ring and movable labyrinth ring.Bearing seat is fixed on motionless Cover For A Turbine, belongs to stationary labyrinth ring; Front bearing gland is fixed on the central shaft of rotation, belongs to movable labyrinth ring.When there being gas by air turbine flowmeter, impeller starts to rotate, because front bearing gland is fixed together with nut between impeller and front bearing, so front bearing gland is with impeller together High Rotation Speed, when gas is by bending passage, often through the throttling action of one-level ring gear, pressure drop, thus pressure reduces step by step, produce resistance to flow.As shown in Figure 2, P1 is Bearing outer pressure, and P2, P3 are the pressure after every grade of ring gear, and P4 is Bearing inner pressure.When bearing is static, P1=P2=P3=P4; When bearing rotary, P1>P2>P3, and because Bearing inner gas is by shutoff, P4 can not reduce (for working pressure in pipeline), causes P3≤P4.Thus hinder gas to enter bearing chamber, realize sealing protection, completely cut off the contact of all kinds of material of Bearing inner and the external world, reduce the probability that the materials such as dust granules enter bearing cavity, reduce the various damages that Bearing inner is formed because of impurity infringement, thus improve serviceable life.Its major advantage is that structure is simple, and non-filler, does not have Metal Contact, thus not easy to wear.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore the utility model comprises the embodiment be not limited to described in embodiment; every other embodiments drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope of the utility model protection equally.
Claims (4)
1. the dry gas sealing structure based on gas turbine meter, it is characterized in that: comprise impeller, central shaft, front bearing gland, bearing seat, axle sleeve baffle plate, sender set and rear bearing gland, described bearing seat is installed on center shaft, described front bearing retainer and rear bearing cover are arranged on the central shaft of the front-end and back-end of bearing seat respectively, described axle sleeve baffle plate is arranged on the front end of bearing seat and front bearing gland and is fixed together with bearing seat, on the central shaft that described impeller is arranged on axle sleeve baffle plate front end and fixing on center shaft, described sender set is arranged on rear bearing cover rear end and fixes on center shaft.
2. a kind of dry gas sealing structure based on gas turbine meter according to claim 1, is characterized in that: the gas turbine meter casing of described central shaft rear end is provided with a filter assemblies.
3. a kind of dry gas sealing structure based on gas turbine meter according to claim 1 and 2, is characterized in that: described impeller is fixing on center shaft by nut; Described sender set is fixing on center shaft by nut.
4. a kind of dry gas sealing structure based on gas turbine meter according to claim 1 and 2, is characterized in that: described axle sleeve baffle plate is fixed together by cross recessed countersunk head sscrew and bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643451.7U CN204944544U (en) | 2015-08-24 | 2015-08-24 | A kind of dry gas sealing structure based on gas turbine meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643451.7U CN204944544U (en) | 2015-08-24 | 2015-08-24 | A kind of dry gas sealing structure based on gas turbine meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204944544U true CN204944544U (en) | 2016-01-06 |
Family
ID=55011960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520643451.7U Expired - Fee Related CN204944544U (en) | 2015-08-24 | 2015-08-24 | A kind of dry gas sealing structure based on gas turbine meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204944544U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812810A (en) * | 2016-12-30 | 2017-06-09 | 天津市迅尔仪表科技有限公司 | A kind of gas turbine meter bearing location structure and method |
| CN108005727A (en) * | 2016-10-27 | 2018-05-08 | 北京精密机电控制设备研究所 | A kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure |
| CN108007656A (en) * | 2016-10-27 | 2018-05-08 | 北京精密机电控制设备研究所 | A kind of device for the experiment of composite material ultracentrifugation |
| CN114812704A (en) * | 2022-03-29 | 2022-07-29 | 功尊仪表(浙江)有限公司 | Intelligent gas turbine flowmeter |
-
2015
- 2015-08-24 CN CN201520643451.7U patent/CN204944544U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005727A (en) * | 2016-10-27 | 2018-05-08 | 北京精密机电控制设备研究所 | A kind of highway turbine machine suitable for high temperature high back pressure dry gas sealing structure |
| CN108007656A (en) * | 2016-10-27 | 2018-05-08 | 北京精密机电控制设备研究所 | A kind of device for the experiment of composite material ultracentrifugation |
| CN108005727B (en) * | 2016-10-27 | 2019-12-20 | 北京精密机电控制设备研究所 | Ultrahigh-speed turbine applicable to high-temperature high-back-pressure dry gas sealing structure |
| CN108007656B (en) * | 2016-10-27 | 2020-05-22 | 北京精密机电控制设备研究所 | Device for composite material ultra-high speed centrifugal test |
| CN106812810A (en) * | 2016-12-30 | 2017-06-09 | 天津市迅尔仪表科技有限公司 | A kind of gas turbine meter bearing location structure and method |
| CN114812704A (en) * | 2022-03-29 | 2022-07-29 | 功尊仪表(浙江)有限公司 | Intelligent gas turbine flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |