CN101956571B - Containerization type mechanical sealing structure of screw expansion power machine - Google Patents
Containerization type mechanical sealing structure of screw expansion power machine Download PDFInfo
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- CN101956571B CN101956571B CN2010102236773A CN201010223677A CN101956571B CN 101956571 B CN101956571 B CN 101956571B CN 2010102236773 A CN2010102236773 A CN 2010102236773A CN 201010223677 A CN201010223677 A CN 201010223677A CN 101956571 B CN101956571 B CN 101956571B
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Abstract
The invention discloses a containerization type mechanical sealing structure of a screw expansion power machine. The sealing structure is arranged in a space between steps at the two ends of a screw revolving shaft and the inner wall of an end seat; a first stationary ring seat is arranged on a gland; a second stationary ring seat is arranged on a cavity; a movable ring seat is arranged on the steps at the two ends of the screw revolving shaft; a movable ring is arranged on the movable ring seat and is in matching contact seal with a first stationary ring of the first stationary ring seat; a first elastic mechanism is arranged between the first stationary ring seat and the gland; the movable ring is in matching contact seal with a second stationary ring of the second stationary ring seat; and a second elastic mechanism is arranged between the second stationary ring seat and the cavity. The containerization type mechanical sealing structure of the screw expansion power machine has the advantages of preventing a medium from leaking into water and water from leaking into oil in a high-temperature or high-pressure medium, keeping the normal operation of the screw expansion power machine and prolonging the service life of the screw expansion power machine.
Description
Technical field
The present invention relates to the expansion motor system field, specifically be meant a kind of cartridge mechanical seal of screw expansion motor.
Background technique
Screw expansion motor mainly is the power sources such as steam, hot water, hydrothermal solution or stream-liquid two-phase flow body that utilize in the industry; With thermal power transfer is power; Drive generator for electricity generation; Or directly drive machinery such as blower fan, water pump, compressor, stirrer, coal pulverizer, flour mill, substitute motor, or substitute the recovery power such as expansion valve of large-scale refrigerator.Screw expansion motor comprises two (yin, yang) screw rotors, shell, bearing and seal arrangements etc.During work, the heat source body medium is introduced into machine inner screw teeth groove, and lead-screw rotates, and along with screw rod rotates, volume constantly increases, and heat source body step-down cooling is expanded and done work, and discharges gas at last, from main shaft sun screw rod output power, drives generator.
Since screw expansion motor to sealing requirements than higher; And need water and oil cooling but, lubricated; And the sealing configuration of screw expansion motor before generally is the structure that adopts simple and easy sealing; In the medium of high temperature or high pressure, cause water and oily leakage easily, not only influence the mechanical efficiency of screw expansion motor, and can make the lost of life of screw expansion motor.
Summary of the invention
To above-mentioned defective; The technical problem that the present invention solves is; A kind of cartridge mechanical seal of screw expansion motor is provided; Can in the medium of high temperature or high pressure, can not produce medium and be leaked to Shui Heshui and leak into the phenomenon in the oil, thereby can make screw expansion motor keep normal operation, prolong the working life of screw expansion motor.
In order to solve above technical problem; The cartridge mechanical seal of screw expansion motor provided by the invention; Be arranged in the step and the space between the end seat inwall at screw rod rotating shaft two ends, comprise first stationary seat, first stationary ring, second stationary seat, second stationary ring, rotating seat and rotating ring;
Said first stationary seat is installed on the gland, and said second stationary seat is installed on the cavity, and said rotating seat is installed on the step at said screw rod rotating shaft two ends;
Said rotating ring is installed on the said rotating seat, and the contact seal that matches with first stationary ring that is installed in said first stationary seat of said rotating ring is provided with first elastic mechanism between said first stationary seat and the said gland;
The contact seal that matches with second stationary ring that is installed in said second stationary seat of said rotating ring is provided with second elastic mechanism between said second stationary seat and the said cavity.
Preferably, said cartridge mechanical seal also comprises the first stationary seat stop pin, and the said first stationary seat stop pin is arranged between said first stationary seat and the said gland.
Preferably, said cartridge mechanical seal also comprises the second stationary seat stop pin, and the said second stationary seat stop pin is arranged between said second stationary seat and the said cavity.
Preferably, said cartridge mechanical seal also comprises the first stationary seat seal ring, and the said first stationary seat seal ring is arranged between said first stationary seat and the said gland.
Preferably, said cartridge mechanical seal also comprises the second stationary seat seal ring, and the said second stationary seat seal ring is arranged between said second stationary seat and the said cavity.
Preferably, said cartridge mechanical seal also comprises the 3rd sealed picture and/or the 4th seal ring, and said the 3rd seal ring is arranged between said gland and the said cavity; Said the 4th seal ring is arranged between said cavity and the said end seat.
Preferably, said cartridge mechanical seal also comprises seal ring of moving ring, and said seal ring of moving ring is arranged between said rotating ring and the said rotating seat.
Preferably, said cartridge mechanical seal also comprises the rotating seat seal ring, and said rotating seat seal ring is arranged between the step at said rotating seat and said screw rod rotating shaft two ends.
Preferably, said cartridge mechanical seal also comprises sealing gasket, and said sealing gasket is arranged between the step at said rotating seat and said screw rod rotating shaft two ends.
Preferably, said cartridge mechanical seal also comprises baffle ring, and said baffle ring is arranged on a side of said sealing gasket.
Preferably, said first elastic mechanism is first spring; Said second elastic mechanism is second spring.
The cartridge mechanical seal of screw expansion motor provided by the invention; Be arranged in the step and the space between the end seat inwall at screw rod rotating shaft two ends; The rotating ring contact seal that matches with first stationary ring is provided with first elastic mechanism between first stationary ring and the gland, when rotating ring and first stationary ring have wearing and tearing; Because the effect of first elastic mechanism, rotating ring still can cooperate contact seal with first stationary ring; The rotating ring contact seal that matches with second stationary ring is provided with second elastic mechanism between second stationary seat and the cavity, when rotating ring and second stationary ring had wearing and tearing, because the effect of second elastic mechanism, rotating ring still can cooperate contact seal with second stationary ring.Compared with prior art; The cartridge mechanical seal of screw expansion motor provided by the invention; Can make screw expansion motor smooth running under low vibration and low noise operating mode; In the medium of high temperature or high pressure, can not produce medium and be leaked to Shui Heshui and leak into the phenomenon in the oil, thereby can make screw expansion motor keep normal operation, prolong the working life of screw expansion motor.
In addition, the cartridge mechanical seal of screw expansion motor provided by the invention is provided with some seal rings, can further strengthen the sealing of cartridge mechanical seal.
Description of drawings
Fig. 1 is the schematic representation of the cartridge mechanical seal of screw expansion motor among the present invention.
Respectively be labeled as among the figure:
1, screw rod rotating shaft; 2, rotating seat seal ring; 3, rotating seat; 4, first stationary seat; 5, first stationary ring; 6, seal ring of moving ring; 7, rotating ring; 8, sealing gasket; 9, baffle ring; 10, second stationary ring; 11, second stationary seat; 12 second stationary seat seal rings; 13, the first stationary seat seal ring; 14, first spring; 15, the 3rd seal ring; 16, the first stationary seat stop pin; 17, gland; 18, the 4th seal ring; 19, cavity; 20 end seats; 21, second spring; 22, the second stationary seat stop pin.
Embodiment
For those skilled in the art can understand technological scheme provided by the present invention better, set forth below in conjunction with specific embodiment.
See also Fig. 1, this figure is the schematic representation of the cartridge mechanical seal of screw expansion motor among the present invention.
The cartridge mechanical seal of screw expansion motor provided by the invention; Be arranged in the step and the space between end seat 20 inwalls at screw rod rotating shaft 1 two ends, comprise first stationary seat 4, first stationary ring 5, second stationary seat 11, second stationary ring 10, rotating seat 4 and rotating ring 7; First stationary seat 4 is installed on the gland 17, and second stationary seat 11 is installed on the cavity 19, and rotating seat 3 is installed on the step at screw rod rotating shaft 1 two ends; Rotating ring 7 is installed on the rotating seat 4, and rotating ring 7 contact seal that matches with first stationary ring 5 that is installed in first stationary seat 4 is provided with first spring 14 between first stationary seat 4 and the gland 17; Rotating ring 7 contact seal that matches with second stationary ring 10 that is installed in second stationary seat 11 is provided with second spring 21 between second stationary seat 11 and the cavity 19.
In order further to strengthen the sealing of cartridge mechanical seal, it also comprises some seal rings: the first stationary seat seal ring 13 is arranged between first stationary seat 4 and the gland 17; The second stationary seat seal ring 12 is arranged between second stationary seat 11 and the cavity 19; The 3rd seal ring 15 is arranged between gland 17 and the cavity 19; The 4th seal ring 18 is arranged between cavity 19 and the end seat 20; Rotating seat seal ring 2 is arranged between the step at rotating seat 3 and screw rod rotating shaft 1 two ends; Seal ring of moving ring 6 is arranged between rotating ring 7 and the rotating seat 3.
Between the step at rotating seat 3 and screw rod rotating shaft 1 two ends, be provided with sealing gasket 8.Baffle ring 9 is arranged on a side of sealing gasket 8, and crush seal pad 8 further strengthens sealing.
The first stationary seat stop pin 16 is arranged between first stationary seat 4 and the gland 17; The second stationary seat stop pin 22 is arranged between second stationary seat 11 and the cavity 19.The first stationary seat stop pin 16 and the second stationary seat stop pin 22 can play and prevent that first stationary seat 4 and second stationary seat 11 from screw rod rotating shaft 1 relative swing offset taking place, thereby influence sealability.
The working principle of the cartridge mechanical seal of screw expansion motor provided by the invention is following: rotating ring 7 contact seal that matches with first stationary ring 5; Be provided with first spring 14 between first stationary seat 4 and the gland 17; When rotating ring 7 and first stationary ring 5 have wearing and tearing; Because the effect of first spring 14, rotating ring 7 still can cooperate contact seal with first stationary ring 5; Rotating ring 7 contact seal that matches with second stationary ring 10; Be provided with second spring 21 between second stationary seat 11 and the cavity 19; When rotating ring 7 and second stationary ring 11 had wearing and tearing, because the effect of second spring 21, rotating ring 7 still can cooperate contact seal with second stationary ring 11.
Compared with prior art; The cartridge mechanical seal of screw expansion motor provided by the invention; Can make screw expansion motor smooth running under low vibration and low noise operating mode; In the medium of high temperature or high pressure, can not produce medium and be leaked to Shui Heshui and leak into the phenomenon in the oil, thereby can make screw expansion motor keep normal operation, prolong the working life of screw expansion motor.
Certainly, more than only be preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (11)
1. the cartridge mechanical seal of a screw expansion motor is arranged in the step and the space between the end seat inwall at screw rod rotating shaft two ends, it is characterized in that:
Comprise first stationary seat, first stationary ring, second stationary seat, second stationary ring, rotating seat and rotating ring;
Said first stationary seat is installed on the gland, and said second stationary seat is installed on the cavity, and said rotating seat is installed on the step at said screw rod rotating shaft two ends;
Said rotating ring is installed on the said rotating seat, and the contact seal that matches with first stationary ring that is installed in said first stationary seat of said rotating ring is provided with first elastic mechanism between said first stationary seat and the said gland;
The contact seal that matches with second stationary ring that is installed in said second stationary seat of said rotating ring is provided with second elastic mechanism between said second stationary seat and the said cavity.
2. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the first stationary seat stop pin, and the said first stationary seat stop pin is arranged between said first stationary seat and the said gland.
3. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the second stationary seat stop pin, and the said second stationary seat stop pin is arranged between said second stationary seat and the said cavity.
4. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the first stationary seat seal ring, and the said first stationary seat seal ring is arranged between said first stationary seat and the said gland.
5. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the second stationary seat seal ring, and the said second stationary seat seal ring is arranged between said second stationary seat and the said cavity.
6. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the 3rd seal ring and/or the 4th seal ring, and said the 3rd seal ring is arranged between said gland and the said cavity; Said the 4th seal ring is arranged between said cavity and the said end seat.
7. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises seal ring of moving ring, and said seal ring of moving ring is arranged between said rotating ring and the said rotating seat.
8. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises the rotating seat seal ring, and said rotating seat seal ring is arranged between the step at said rotating seat and said screw rod rotating shaft two ends.
9. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, also comprises sealing gasket, and said sealing gasket is arranged between the step at said rotating seat and said screw rod rotating shaft two ends.
10. the cartridge mechanical seal of screw expansion motor according to claim 9 is characterized in that, also comprises baffle ring, and said baffle ring is arranged on a side of said sealing gasket.
11. the cartridge mechanical seal of screw expansion motor according to claim 1 is characterized in that, said first elastic mechanism is first spring; Said second elastic mechanism is second spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102236773A CN101956571B (en) | 2010-07-09 | 2010-07-09 | Containerization type mechanical sealing structure of screw expansion power machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102236773A CN101956571B (en) | 2010-07-09 | 2010-07-09 | Containerization type mechanical sealing structure of screw expansion power machine |
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| Publication Number | Publication Date |
|---|---|
| CN101956571A CN101956571A (en) | 2011-01-26 |
| CN101956571B true CN101956571B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102236773A Active CN101956571B (en) | 2010-07-09 | 2010-07-09 | Containerization type mechanical sealing structure of screw expansion power machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305105B (en) * | 2011-08-04 | 2013-04-03 | 上海齐耀膨胀机有限公司 | Sealing structure of screw expander |
| CN104405641B (en) * | 2014-11-27 | 2016-05-18 | 山东明天机械有限公司 | A kind of roots-type vapour compression machine |
| CN111765249A (en) * | 2019-04-02 | 2020-10-13 | 韩乐工 | Mechanical seal with T-shaped moving ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| CN1540139A (en) * | 2003-04-25 | 2004-10-27 | 江西华电电力有限责任公司 | Screw expansion power machine |
| CN101592151A (en) * | 2008-05-27 | 2009-12-02 | 株式会社神户制钢所 | Screw fluid machine |
| CN201723255U (en) * | 2010-07-09 | 2011-01-26 | 江西华电电力有限责任公司 | Assembled mechanical seal structure of screw rod expansion power machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3614406B2 (en) * | 2002-01-21 | 2005-01-26 | 日精樹脂工業株式会社 | Seal structure of the screw rear end of the injection device |
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2010
- 2010-07-09 CN CN2010102236773A patent/CN101956571B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| CN1540139A (en) * | 2003-04-25 | 2004-10-27 | 江西华电电力有限责任公司 | Screw expansion power machine |
| CN101592151A (en) * | 2008-05-27 | 2009-12-02 | 株式会社神户制钢所 | Screw fluid machine |
| CN201723255U (en) * | 2010-07-09 | 2011-01-26 | 江西华电电力有限责任公司 | Assembled mechanical seal structure of screw rod expansion power machine |
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| CN101956571A (en) | 2011-01-26 |
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Effective date of registration: 20170417 Address after: 338004 Xinyu high tech Development Zone, Jiangxi LDK Avenue, No. 398 Patentee after: Jiangxi Huadian Power Generation Technology Co., Ltd. Address before: 338004 Xinyu high tech Industrial Park, Jiangxi LDK Avenue, No. 398 Patentee before: Huadian Electric Power Co., Ltd., Jiangxi |
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