CN103603803B - A kind of water vapor screw compressor shaft seal structure - Google Patents
A kind of water vapor screw compressor shaft seal structure Download PDFInfo
- Publication number
- CN103603803B CN103603803B CN201310659216.4A CN201310659216A CN103603803B CN 103603803 B CN103603803 B CN 103603803B CN 201310659216 A CN201310659216 A CN 201310659216A CN 103603803 B CN103603803 B CN 103603803B
- Authority
- CN
- China
- Prior art keywords
- carbon ring
- ring seal
- seal
- section
- water vapor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of water vapor screw compressor sealing configuration, belong to helical-lobe compressor technical field.Water vapor screw compressor shaft seal structure, be arranged on the shaft part between screw compression machine bearing and compression chamber, it is characterized in that: comprise the first paragraph carbon ring seal be arranged on successively on described shaft part, second segment carbon ring seal, 3rd section of carbon ring seal, labyrinth seal, described first paragraph carbon ring seal is near described compression chamber, described labyrinth seal is near described bearing, every section of carbon ring seal comprises at least two carbocyclic ring assemblies, the balance port communicated with outside is provided with between first paragraph carbon ring seal and second segment carbon ring seal, the solidifying gas port communicated with outside is provided with between second segment carbon ring seal and the 3rd section of carbon ring seal, isolation gas entrance is provided with in the 3rd section of carbon ring seal.Instant invention overcomes the defect of existing water vapor screw compressor poor reliability, there is high pressure resistant, high temperature resistant, good seal performance, long service life advantage.
Description
Technical field
The present invention relates to a kind of screw compressor shaft seal structure, particularly a kind of water vapor screw compressor shaft seal structure, belong to helical-lobe compressor technical field.
Background technique
Along with the increasing concern for the environment in various countries and energy problem, the secondary energy such as the waste heat produced in industrial production, used heat almost throughout each power consumption industry, as industrial fields such as electric power, chemical industry, oil, metallurgy, mine, light industrys.If effective recycling this part resource good, mass energy consumption will be saved for enterprise.Mechanical vapor recompression technology is more and more paid close attention to by industry.Water vapor screw compressor obtains as the core apparatus of this technology and applies more and more widely.But the sealing configuration adopted due to the water vapor screw compressor applied at present is the seal form of imitated air screw compressor mostly; under water vapor compressor working condition, its reliability reduces greatly; shutdown maintenance is often needed to change; larger impact is created on the reliability of complete machine, and becomes one of principal element of restriction water vapor screw compressor application.
Summary of the invention
For the above-mentioned defect existed in prior art, the invention provides a kind of can high pressure resistant, high temperature resistant, water vapor screw compressor shaft seal structure that long service life, reliability are high.
The present invention is achieved by the following technical solution: a kind of water vapor screw compressor shaft seal structure, be arranged on the shaft part between screw compression machine bearing and compression chamber, it comprises the first paragraph carbon ring seal be arranged on successively on described shaft part, second segment carbon ring seal, 3rd section of carbon ring seal, labyrinth seal, described first paragraph carbon ring seal is near described compression chamber, described labyrinth seal is near described bearing, every section of carbon ring seal comprises at least two carbocyclic ring assemblies, the balance port communicated with outside is provided with between first paragraph carbon ring seal and second segment carbon ring seal, the solidifying gas port communicated with outside is provided with between second segment carbon ring seal and the 3rd section of carbon ring seal, isolation gas entrance is provided with in the 3rd section of carbon ring seal.
The first paragraph arranged in the present invention is sealed into high low pressure balancing segment, by balance port, can effectively dredge on high-tension side gas, reduces high pressure side and reveals vapor pressure, reduce the steam leakage pressure of two sections of sealings, is conducive to reducing leakage rate.The steam-condensation Cheng Shui of leakage can reclaim by the second segment sealing arranged in the present invention.The 3rd section that arranges in the present invention is sealed into distance piece, by passing into the isolation gas of certain pressure in carbocyclic ring, can prevent steam from leaking in the lubricant oil of bearing side.By arranging labyrinth seal, can prevent the lubricant oil of bearing side from leaking to carbon ring seal side.
Described carbocyclic ring assembly is trisection circular arc composition, fastening by the spring being arranged on outside.The gap of carbocyclic ring assembly to carbocyclic ring and axle of this kind of structure has certain automatic adjustment and memory function, after can ensureing that carbocyclic ring is worn, still can return to original gap width.
In order to ensure sealing effect, every section of carbon ring seal comprises 3-4 carbocyclic ring assembly.
Pressurized air is passed into as isolation in described 3rd section of carbon ring seal.The pressurized air passing into certain pressure in carbocyclic ring can effectively prevent steam from leaking in the lubricant oil of bearing side.
Described solidifying gas port is connected with gland-sealing cooler.By gland-sealing cooler, the steam-condensation of leakage can be become Water Sproading, reduce steam directly discharged to air.
The present invention is owing to adopting three sections of carbon ring seals in water vapor side, and it is high temperature resistant, high pressure resistant, can adapt to the applying working condition of high temperature, high pressure, can improve working life.On high-tension side gas leakage, by arranging balance port between first paragraph carbon ring seal and second segment carbon ring seal, effectively can be carried out balance pressure release by the present invention, reduces the steam leakage pressure of two sections of sealings, thus reduces leakage rate.By arranging solidifying gas port between second segment carbon ring seal and the 3rd section of carbon ring seal, solidifying gas port connects gland-sealing cooler, the steam of leakage can be carried out condensation, the soft water that gets off of condensation recyclable enter demineralized water box, decrease the steam be directly discharged in air, not only alleviate environmental pressure, and reclaim a certain amount of softened water.By arranging isolation gas entrance in the 3rd section of carbon ring seal, isolation gas passes in the 3rd section of carbon ring seal, can isolate steam and lubricant oil.In addition, the carbocyclic ring assembly in the present invention adopts trisection arc structure, and after can ensureing that carbocyclic ring is worn, the gap of carbocyclic ring and axle still can return to original gap width.The present invention, by ingenious and reliable structural design, not only has good sealability, and long service life, is very suitable for long period and runs continuously.
Accompanying drawing explanation
Fig. 1 is the structural representation in the embodiment of the present invention;
Fig. 2 is the structural representation of the carbocyclic ring assembly in the present invention;
In figure, 1 is carbocyclic ring assembly, and 2 is springs, and 3 is balance port, and 4 is solidifying gas ports, and 5 is isolation gas entrances, and 6 is labyrinth seals, and 7 is gland-sealing coolers, and 8 is trisection circular arcs.
Embodiment
Below by indefiniteness embodiment and the present invention is further illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of water vapor screw compressor shaft seal structure, it is arranged on the shaft part between screw compression machine bearing and compression chamber, and it comprises the first paragraph carbon ring seal be arranged on successively on described shaft part, second segment carbon ring seal, the 3rd section of carbon ring seal, labyrinth seal 6.Wherein, described first paragraph carbon ring seal is near the compression chamber side of helical-lobe compressor, and described labyrinth seal 6 is positioned at described bearing side after being arranged on described 3rd section of carbon ring seal end.Every section of carbon ring seal comprises at least two carbocyclic ring assemblies 1.Between first paragraph carbon ring seal and second segment carbon ring seal, have interval, this interval is provided with the balance port 3 communicated with outside, and this balance port communicates with counter balance pocket.Between second segment carbon ring seal and the 3rd section of carbon ring seal, also have interval, this interval is provided with the solidifying gas port 4 communicated with outside, and solidifying gas port 4 is connected with gland-sealing cooler 7.In the 3rd section of carbon ring seal, be provided with isolation gas entrance 5, pressurized air passes in the 3rd section of carbon ring seal by isolation gas entrance 5.
As shown in Figure 2, in the present embodiment, described carbocyclic ring assembly 1 is trisection circular arc composition, fastening by the spring 2 being arranged on outside, the gap of spring 2 pairs of carbocyclic rings and axle has automatic regulation function, after carbocyclic ring is worn, carbocyclic ring can be regulated to return to original gap width.
In the present embodiment, every section of carbon ring seal comprises 3-4 carbocyclic ring assembly 1.
In the actual moving process of helical-lobe compressor, the steam that high pressure side is leaked balances pressure release by the balance port 3 be arranged between first paragraph carbon ring seal and second segment carbon ring seal, makes that its pressure is approximate to be reached or a little more than low voltage side vapor pressure; Be arranged on solidifying gas port 4 between second segment carbon ring seal and the 3rd section of carbon ring seal and almost all absorb all leaked steam by gland-sealing cooler 7, and be condensed into softened water and reclaim; Pressurized air passes in the 3rd section of carbon ring seal by isolation gas entrance 5, the air of micro positive pressure is poured in the middle of carbocyclic ring, can effectively prevent water vapor and bearing oil from leaping up mutually, both can prevent steam from scurrying into lubricant oil and cause emulsification of lubricant, intercept again the cooling effect that oil leak affects cooler in gland-sealing cooler.
Facts have proved, the present invention uses under high temperature, condition of high voltage has good sealability, and has the working life of more than 3 years, greatly can improve the operational safety of water vapor screw compressor.
Other parts of the present invention adopt known technology, do not repeat them here.
Claims (4)
1. a water vapor screw compressor shaft seal structure, be arranged on the shaft part between screw compression machine bearing and compression chamber, it is characterized in that: comprise the first paragraph carbon ring seal be arranged on successively on described shaft part, second segment carbon ring seal, 3rd section of carbon ring seal, labyrinth seal, described first paragraph carbon ring seal is near described compression chamber, described labyrinth seal is near described bearing, every section of carbon ring seal comprises at least two carbocyclic ring assemblies, the balance port communicated with counter balance pocket is provided with between first paragraph carbon ring seal and second segment carbon ring seal, the solidifying gas port communicated with outside is provided with between second segment carbon ring seal and the 3rd section of carbon ring seal, isolation gas entrance is provided with in the 3rd section of carbon ring seal, described solidifying gas port is connected with gland-sealing cooler.
2. water vapor screw compressor shaft seal structure according to claim 1, is characterized in that: described carbocyclic ring assembly is trisection circular arc composition, fastening by the spring being arranged on outside.
3. water vapor screw compressor shaft seal structure according to claim 1 and 2, is characterized in that: every section of carbon ring seal comprises 3-4 carbocyclic ring assembly.
4. water vapor screw compressor shaft seal structure according to claim 1 and 2, is characterized in that: pass into pressurized air as isolation in described 3rd section of carbon ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659216.4A CN103603803B (en) | 2013-12-09 | 2013-12-09 | A kind of water vapor screw compressor shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659216.4A CN103603803B (en) | 2013-12-09 | 2013-12-09 | A kind of water vapor screw compressor shaft seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103603803A CN103603803A (en) | 2014-02-26 |
| CN103603803B true CN103603803B (en) | 2016-03-02 |
Family
ID=50122051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310659216.4A Active CN103603803B (en) | 2013-12-09 | 2013-12-09 | A kind of water vapor screw compressor shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103603803B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317680A (en) * | 2014-06-11 | 2016-02-10 | 上海汉钟精机股份有限公司 | Screw compressor exhaust end journal hole sealing mechanism |
| CN107061285A (en) * | 2017-04-11 | 2017-08-18 | 东营海森密封技术有限责任公司 | A kind of float-ring sealing device and blanket gas supply system for helical-lobe compressor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153395A (en) * | 1976-09-04 | 1979-05-08 | Howden Compressors Limited | Compressors |
| US4781553A (en) * | 1987-07-24 | 1988-11-01 | Kabushiki Kaisha Kobe Seiko Sho | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means |
| JPH02196187A (en) * | 1989-01-26 | 1990-08-02 | Hokuetsu Kogyo Co Ltd | Oil-free screw vacuum pump |
| CN201902331U (en) * | 2010-11-30 | 2011-07-20 | 成都一通密封有限公司 | Static pressure type dry air sealing device for screw compressor |
| CN102373966A (en) * | 2010-07-01 | 2012-03-14 | 株式会社神户制钢所 | Screw-type Steam Machine |
| CN202284642U (en) * | 2011-09-28 | 2012-06-27 | 侯玉杰 | Bidirectional graphite carbon ring seal |
| KR20120074236A (en) * | 2010-12-27 | 2012-07-05 | 가부시키가이샤 고베 세이코쇼 | Water injection type screw fluid machine |
| EP2527693A1 (en) * | 2011-05-26 | 2012-11-28 | Kabushiki Kaisha Kobe Seiko Sho | Shaft sealing structure and rotary fluid machine |
| CN203655641U (en) * | 2013-12-09 | 2014-06-18 | 济南海屹流体技术有限公司 | Shaft sealing structure of water vapor screw rod compressor |
-
2013
- 2013-12-09 CN CN201310659216.4A patent/CN103603803B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153395A (en) * | 1976-09-04 | 1979-05-08 | Howden Compressors Limited | Compressors |
| US4781553A (en) * | 1987-07-24 | 1988-11-01 | Kabushiki Kaisha Kobe Seiko Sho | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means |
| JPH02196187A (en) * | 1989-01-26 | 1990-08-02 | Hokuetsu Kogyo Co Ltd | Oil-free screw vacuum pump |
| CN102373966A (en) * | 2010-07-01 | 2012-03-14 | 株式会社神户制钢所 | Screw-type Steam Machine |
| CN201902331U (en) * | 2010-11-30 | 2011-07-20 | 成都一通密封有限公司 | Static pressure type dry air sealing device for screw compressor |
| KR20120074236A (en) * | 2010-12-27 | 2012-07-05 | 가부시키가이샤 고베 세이코쇼 | Water injection type screw fluid machine |
| EP2527693A1 (en) * | 2011-05-26 | 2012-11-28 | Kabushiki Kaisha Kobe Seiko Sho | Shaft sealing structure and rotary fluid machine |
| CN202284642U (en) * | 2011-09-28 | 2012-06-27 | 侯玉杰 | Bidirectional graphite carbon ring seal |
| CN203655641U (en) * | 2013-12-09 | 2014-06-18 | 济南海屹流体技术有限公司 | Shaft sealing structure of water vapor screw rod compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103603803A (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201526675U (en) | Novel dynamic sealing device for gas | |
| CN103603803B (en) | A kind of water vapor screw compressor shaft seal structure | |
| CN203655641U (en) | Shaft sealing structure of water vapor screw rod compressor | |
| CN201778069U (en) | Hearth roll bearing seat of continuous bright annealing furnace | |
| CN102330819B (en) | Mechanical sealing device | |
| CN202451792U (en) | High speed class combined seal oil return mechanism in main wind power gear box | |
| CN104100524A (en) | Roots blower with combined sealing structure | |
| CN203098201U (en) | Oil-free lubrication compressor efficient cooling packing sealing device | |
| CN102305105B (en) | Sealing structure of screw expander | |
| CN204705173U (en) | Seal of rotary kiln structure | |
| CN203067217U (en) | Packing and sealing device for high pressure gas | |
| CN206513525U (en) | A kind of piston packing ring of oilless air compressor | |
| CN202280787U (en) | Metal magnetofluid guiding sealing device for motor vehicle damper | |
| CN203809695U (en) | Medium speed coal mill lower frame body outer gas sealing device | |
| CN204647323U (en) | A kind of liquid film non-contacting sealing structure | |
| CN204638282U (en) | A kind of grinding roller dust guard | |
| CN104595055B (en) | A kind of thermomotor piston rod seal pack | |
| CN210034422U (en) | Carbon ring type floating ring sealing device | |
| CN2208627Y (en) | Gas membrane float-ring oil sealing for air compressor | |
| CN204299938U (en) | The combined main shaft sealing of Novel cooling tower hydraulic power blower fan | |
| CN104791021A (en) | Novel shaft end clearance-free vapor seal of supercritical turbine | |
| CN204200661U (en) | A kind of sintered exhauster casing main shaft sealing device | |
| CN203453005U (en) | Hydrogen gas compressor seal fitting | |
| CN202732446U (en) | Novel centrifugal pump packing seal structure | |
| CN103388571B (en) | A kind of hydrogen gas compressor Seal Kit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160614 Address after: 250101, No. 2350, old road, Ji'nan hi tech Zone, Shandong, 516 Patentee after: Yan Chun Address before: 512 room 2350, 250101, Pioneer Road, hi tech Zone, Shandong, Ji'nan Patentee before: JINAN HAIYI FLUID TECHNOLOGY CO., LTD. |