CN101864992A - Mechanical sealing structure of screw rod expansion motive power machine - Google Patents
Mechanical sealing structure of screw rod expansion motive power machine Download PDFInfo
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- CN101864992A CN101864992A CN 201010205223 CN201010205223A CN101864992A CN 101864992 A CN101864992 A CN 101864992A CN 201010205223 CN201010205223 CN 201010205223 CN 201010205223 A CN201010205223 A CN 201010205223A CN 101864992 A CN101864992 A CN 101864992A
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Abstract
The invention discloses a mechanical sealing structure of a screw rod expansion motive power machine, which is arranged in a space between steps of both ends of a screw rod rotating shaft and the inner wall of an end seat. The mechanical sealing structure is a floating type two-way mechanical sealing structure. A first stationary ring seat and a second stationary ring seat are respectively arranged at the right end and left end of the inner wall of the end seat, a movable ring seat is arranged on the steps at both ends of the screw rod rotating shaft, a first movable ring is arranged at the right end of the movable ring seat to be in matched contact seal with a first stationary ring arranged on the first stationary ring seat, a first elastic mechanism is arranged between the first movable ring and the movable ring seat, a second movable ring is arranged at the left end of the movable ring seat to be in matched contact seal with a second stationary ring arranged on the second stationary ring seat, and a second elastic mechanism is arranged between the second stationary ring and the second stationary ring seat. The mechanical sealing structure of the screw rod expansion motive power machine provided by the invention can not generate the phenomena of medium leakage to water and water leakage to oil in a high-temperature or high-pressure medium, the screw rod expansion motive power machine can maintain normal operation, and the service life of the screw rod expansion motive power machine can be prolonged.
Description
Technical field
The present invention relates to the expansion motor system field, specifically be meant a kind of mechanical seal structure 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
At above-mentioned defective, the technical problem that the present invention solves is, a kind of mechanical seal structure of screw expansion motor is provided, can can not produce medium in the medium of high temperature or high pressure is leaked to Shui Heshui and leaks into 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 mechanical seal structure 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, described mechanical seal structure is floating type two-way mechanical seal structure, comprises first stationary seat, first stationary ring, second stationary seat, second stationary ring, rotating seat, first rotating ring and second rotating ring;
Described first stationary seat and described second stationary seat are installed in the right left two ends of described end seat inwall respectively, and described rotating seat is installed on the step at described screw rod rotating shaft two ends;
The right-hand member that described first rotating ring is installed in described rotating seat contact seal that matches with first stationary ring that is installed in described first stationary seat is provided with first elastic mechanism between described first rotating ring and the described rotating seat;
The left end that described second rotating ring is installed in described rotating seat contact seal that matches with second stationary ring that is installed in described second stationary seat is provided with second elastic mechanism between described second stationary ring and described second stationary seat.
Preferably, described second stationary seat is provided with the observation aperture, described observation aperture one end and external communications, and the described observation aperture the other end is communicated with the left end of described second stationary ring.
Preferably, described mechanical seal structure also comprises the first stationary seat seal ring, and the described first stationary seat seal ring is arranged between described first stationary seat and the described end seat inwall.
Preferably, described mechanical seal structure also comprises the first stationary ring seal ring, and the described first stationary ring seal ring is arranged between described first stationary ring and described first stationary seat.
Preferably, described mechanical seal structure also comprises the second stationary seat seal ring, and the described second stationary seat seal ring is arranged between described second stationary seat and the described end seat inwall.
Preferably, described mechanical seal structure also comprises the second stationary ring seal ring, and the described second stationary ring seal ring is arranged between described second stationary ring and described second stationary seat.
Preferably, described mechanical seal structure also comprises the rotating seat seal ring, and described rotating seat seal ring is arranged between the step at described rotating seat and described screw rod rotating shaft two ends.
Preferably, described mechanical seal structure also comprises first seal ring of moving ring, and described first seal ring of moving ring is arranged between described first rotating ring and the described rotating seat.
Preferably, described mechanical seal structure also comprises second seal ring of moving ring, and described second seal ring of moving ring is arranged between described second rotating ring and the described rotating seat.
Preferably, described first elastic mechanism is first spring.
Preferably, described second elastic mechanism is second spring.
The mechanical seal structure 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, described mechanical seal structure is floating type two-way mechanical seal structure, the contact seal that matches with first stationary ring of first rotating ring, be provided with first elastic mechanism between first rotating ring and the rotating seat, when first rotating ring and first stationary ring had wearing and tearing, because the effect of first elastic mechanism, first rotating ring still can cooperate contact seal with first stationary ring; The contact seal that matches with second stationary ring of second rotating ring, be provided with second elastic mechanism between second stationary ring and second stationary seat, when second rotating ring and second stationary ring had wearing and tearing, because the effect of second elastic mechanism, second rotating ring still can cooperate contact seal with second stationary ring.Compared with prior art, the mechanical seal structure of screw expansion motor provided by the invention, can make screw expansion motor smooth running under low vibration and low noise operating mode, can not produce medium in the medium of high temperature or high pressure is leaked to Shui Heshui and leaks into phenomenon in the oil, thereby can make screw expansion motor keep normal operation, prolong the working life of screw expansion motor.
In addition, the mechanical seal structure of screw expansion motor provided by the invention is provided with some seal rings, can further strengthen the sealing of mechanical seal structure.
Especially, the mechanical seal structure of screw expansion motor provided by the invention, second stationary seat is provided with the observation aperture, observation aperture one end and external communications, the observation aperture the other end is communicated with the left end of second stationary ring, and when second rotating ring and second stationary ring may wear to can't cooperate contact seal the time, water or oil can flow out by described observation aperture, the user can know that second rotating ring may wear to second stationary ring and can't cooperate the contact seal degree, needs to change parts.
Description of drawings
Fig. 1 is the schematic representation of the mechanical seal structure of screw expansion motor among the present invention.
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 mechanical seal structure of screw expansion motor among the present invention.
The mechanical seal structure of screw expansion motor provided by the invention, be arranged in the step and the space between end seat 11 inwalls at screw rod rotating shaft 1 two ends, mechanical seal structure is floating type two-way mechanical seal structure, comprises first stationary seat 18, first stationary ring 9, second stationary seat 14, second stationary ring 5, rotating seat 7, first rotating ring 17 and second rotating ring 6; First stationary seat 18 and second stationary seat 14 are installed in the right left two ends of end seat 11 inwalls respectively, and rotating seat 7 is installed on the step at screw rod rotating shaft 1 two ends; The right-hand member that first rotating ring 17 is installed in rotating seat 7 contact seal that matches with first stationary ring 9 that is installed in first stationary seat 18 is provided with first spring 8 between first rotating ring 17 and the rotating seat 7; The left end that second rotating ring 6 is installed in rotating seat 7 contact seal that matches with second stationary ring 5 that is installed in second stationary seat 14 is provided with second spring 3 between second stationary ring 5 and second stationary seat 14.
In order further to strengthen the sealing of mechanical seal structure, it also comprises some seal rings, and the first stationary seat seal ring 19 is arranged between first stationary seat 18 and end seat 11 inwalls; The first stationary ring seal ring 10 is arranged between first stationary ring 9 and first stationary seat 18; The second stationary seat seal ring 12 is arranged between second stationary seat 14 and end seat 11 inwalls; The second stationary ring seal ring 4 is arranged between second stationary ring 5 and second stationary seat 14; Rotating seat seal ring 2 is arranged between the step at rotating seat 7 and screw rod rotating shaft 1 two ends; First seal ring of moving ring 16 is arranged between first rotating ring 17 and the rotating seat 7; Second seal ring of moving ring 15 is arranged between second rotating ring 6 and the rotating seat 7.
Second stationary seat 14 is provided with observation aperture 13, observation aperture 13 1 ends and external communications, and the other end is communicated with the left end of second stationary ring 5.When second rotating ring 6 and second stationary ring 5 may wear to can't cooperate contact seal the time, water or oil can flow out by observation aperture 13, and the user can know that second rotating ring 6 may wear to second stationary ring 5 and can't cooperate the contact seal degree, need the replacing parts.
Compared with prior art, the mechanical seal structure of screw expansion motor provided by the invention, can make screw expansion motor smooth running under low vibration and low noise operating mode, can not produce medium in the medium of high temperature or high pressure is leaked to Shui Heshui and leaks into 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 improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. the mechanical seal structure 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, and it is characterized in that: described mechanical seal structure is floating type two-way mechanical seal structure,
Comprise first stationary seat, first stationary ring, second stationary seat, second stationary ring, rotating seat, first rotating ring and second rotating ring;
Described first stationary seat and described second stationary seat are installed in the right left two ends of described end seat inwall respectively, and described rotating seat is installed on the step at described screw rod rotating shaft two ends;
The right-hand member that described first rotating ring is installed in described rotating seat contact seal that matches with first stationary ring that is installed in described first stationary seat is provided with first elastic mechanism between described first rotating ring and the described rotating seat;
The left end that described second rotating ring is installed in described rotating seat contact seal that matches with second stationary ring that is installed in described second stationary seat is provided with second elastic mechanism between described second stationary ring and described second stationary seat.
2. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, described second stationary seat is provided with the observation aperture, described observation aperture one end and external communications, and the described observation aperture the other end is communicated with the left end of described second stationary ring.
3. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises the first stationary seat seal ring, and the described first stationary seat seal ring is arranged between described first stationary seat and the described end seat inwall.
4. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises the first stationary ring seal ring, and the described first stationary ring seal ring is arranged between described first stationary ring and described first stationary seat.
5. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises the second stationary seat seal ring, and the described second stationary seat seal ring is arranged between described second stationary seat and the described end seat inwall.
6. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises the second stationary ring seal ring, and the described second stationary ring seal ring is arranged between described second stationary ring and described second stationary seat.
7. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises the rotating seat seal ring, and described rotating seat seal ring is arranged between the step at described rotating seat and described screw rod rotating shaft two ends.
8. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises first seal ring of moving ring, and described first seal ring of moving ring is arranged between described first rotating ring and the described rotating seat.
9. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, also comprises second seal ring of moving ring, and described second seal ring of moving ring is arranged between described second rotating ring and the described rotating seat.
10. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, described first elastic mechanism is first spring.
11. the mechanical seal structure of screw expansion motor according to claim 1 is characterized in that, described second elastic mechanism is second spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102052233A CN101864992B (en) | 2010-06-18 | 2010-06-18 | Mechanical sealing structure of screw rod expansion motive power machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102052233A CN101864992B (en) | 2010-06-18 | 2010-06-18 | Mechanical sealing structure of screw rod expansion motive power machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101864992A true CN101864992A (en) | 2010-10-20 |
| CN101864992B CN101864992B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102052233A Active CN101864992B (en) | 2010-06-18 | 2010-06-18 | Mechanical sealing structure of screw rod expansion motive power machine |
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| Country | Link |
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| CN (1) | CN101864992B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305105A (en) * | 2011-08-04 | 2012-01-04 | 上海齐耀膨胀机有限公司 | Sealing structure of screw expander |
| CN110553039A (en) * | 2019-09-02 | 2019-12-10 | 福州市虚谷技术有限公司 | screw expander sealing structure |
| CN112524253A (en) * | 2020-11-29 | 2021-03-19 | 山东正铭流体控制设备有限公司 | Mechanical sealing device with heating and pneumatic stirring functions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741694A (en) * | 1971-04-07 | 1973-06-26 | F Parsons | Positive displacement rotary engine |
| US4636156A (en) * | 1984-05-29 | 1987-01-13 | Compair Broomwade Limited | Screw rotor machines with specific tooth profiles |
| EP1309799B1 (en) * | 2000-08-16 | 2004-09-29 | Bitzer Kühlmaschinenbau GmbH | Screw-type compressor |
| CN1540139A (en) * | 2003-04-25 | 2004-10-27 | 江西华电电力有限责任公司 | Screw expansion power machine |
| CN1934335A (en) * | 2004-03-16 | 2007-03-21 | 大金工业株式会社 | Rotary type expansion machine |
| CN201835874U (en) * | 2010-06-18 | 2011-05-18 | 江西华电电力有限责任公司 | Mechanical sealing structure of screw expanding power machine |
-
2010
- 2010-06-18 CN CN2010102052233A patent/CN101864992B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741694A (en) * | 1971-04-07 | 1973-06-26 | F Parsons | Positive displacement rotary engine |
| US4636156A (en) * | 1984-05-29 | 1987-01-13 | Compair Broomwade Limited | Screw rotor machines with specific tooth profiles |
| EP1309799B1 (en) * | 2000-08-16 | 2004-09-29 | Bitzer Kühlmaschinenbau GmbH | Screw-type compressor |
| CN1540139A (en) * | 2003-04-25 | 2004-10-27 | 江西华电电力有限责任公司 | Screw expansion power machine |
| CN1934335A (en) * | 2004-03-16 | 2007-03-21 | 大金工业株式会社 | Rotary type expansion machine |
| CN201835874U (en) * | 2010-06-18 | 2011-05-18 | 江西华电电力有限责任公司 | Mechanical sealing structure of screw expanding power machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305105A (en) * | 2011-08-04 | 2012-01-04 | 上海齐耀膨胀机有限公司 | Sealing structure of screw expander |
| CN110553039A (en) * | 2019-09-02 | 2019-12-10 | 福州市虚谷技术有限公司 | screw expander sealing structure |
| CN112524253A (en) * | 2020-11-29 | 2021-03-19 | 山东正铭流体控制设备有限公司 | Mechanical sealing device with heating and pneumatic stirring functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101864992B (en) | 2012-09-19 |
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Effective date of registration: 20170418 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 |