CN114033501A - Split type seal structure of runoff turbocharging power generation system - Google Patents
Split type seal structure of runoff turbocharging power generation system Download PDFInfo
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- CN114033501A CN114033501A CN202111326015.3A CN202111326015A CN114033501A CN 114033501 A CN114033501 A CN 114033501A CN 202111326015 A CN202111326015 A CN 202111326015A CN 114033501 A CN114033501 A CN 114033501A
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- 238000010248 power generation Methods 0.000 title claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 104
- 230000003068 static effect Effects 0.000 claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
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Abstract
The invention relates to a split type sealing structure of a radial flow turbocharging power generation system. According to the structural parameters of the turbocharging power generation system, firstly, the size parameters of a sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw are determined, secondly, the processing of a sealing structure assembly is completed, and on the basis, the static valve and the base are assembled and fixed by the fixing screw; then, the pressing cover is assembled with the base and the static valve, the pressing cover is installed on the base and is fastened by a locking screw, and a complete sealing structure is formed. The sealing structure has good sealing effect and good manufacturability.
Description
Technical Field
The invention belongs to the field of structural design of a radial flow turbocharging power generation system, and particularly relates to a split type sealing structure of the radial flow turbocharging power generation system.
Background
The radial-flow turbocharging power generation system can realize the conversion of heat energy to mechanical energy through thermodynamic cycle processes such as heat absorption, expansion work, heat release, compression and the like under a closed condition by means of a gas working medium, and further convert the mechanical energy into electric energy by utilizing a motor. The typical radial-flow turbocharging power generation system mainly comprises a turbine, a compressor, a motor and the like in structure.
The rotor is one of the most central components in the turbo-charging power generation system, and plays a decisive role in stable operation, thermoelectric conversion efficiency, reliability and service life of the system. In the running process of the radial flow turbocharging power generation system, the rotor is in a high-speed rotating state, the rotating speed of the rotor can reach tens of thousands of revolutions per minute, the rotating speed of some rotors even reaches hundreds of thousands of revolutions per minute, and once the rotor structure breaks down, the turbocharging power generation system can not normally work, and the system structure can be damaged. Therefore, the reasonable design of the structure of the rotor is very important for ensuring the structural reliability of the turbine power generation system.
The rotor sealing structure aims at ensuring the orderly flow of the gas working medium, preventing the gas working medium from leaking along the gap part of the rotor and the static part, and playing a key role in the reliable operation of the rotor. For a radial turbine power generation system rotor, the sealing part mainly focuses on the rotor sealing of a compressor end and a turbine end, particularly the rotor sealing structure of the turbine end, and the sealing difficulty is large due to the large pressure difference and high temperature of the sealing working medium of the turbine end. At present, the sealing of rotor structures such as a turbocharging power generation system is mainly realized by arranging a sealing ring groove on a rotor, arranging one or more sealing rings in the ring groove, and enabling the sealing rings to be respectively contacted with the end surface of the ring groove and the end surface of a static supporting part when the rotor works so as to realize reliable sealing between the rotor and the static part. The sealing mode has the advantages of simple structure, small leakage amount, low manufacturing cost and the like, but has the problem of short service life and the like, and particularly when the sealing ring is used for sealing a high-temperature end, the sealing ring easily loses elasticity after long-time working to cause sealing failure, so that the sealing ring is a main factor for limiting the service life of a system.
Aiming at the requirements of reliability and service life of a radial flow turbocharging power generation system, the sealing structure of the rotor is reasonably designed, so that the reliable sealing between the rotor and a static part can be realized, the long-time working requirement can be met, and the aims of high reliability and long service life of the turbocharging power generation system structure are fulfilled.
Disclosure of Invention
The invention provides a split type sealing structure of a radial flow turbocharging power generation system aiming at the rotor sealing requirement in the radial flow turbocharging power generation system. The sealing structure comprises a sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw. According to the structural parameters of the turbocharging power generation system, firstly, the size parameters of a sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw are determined, secondly, the processing of a sealing structure assembly is completed, and on the basis, the static valve and the base are assembled and fixed by the fixing screw; then, the pressing cover is assembled with the base and the static valve, the pressing cover is installed on the base and is fastened by a locking screw, and a complete sealing structure is formed.
The technical scheme of the invention is as follows:
a split type sealing structure of a radial flow turbocharging power generation system comprises a sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw.
The center of the sealing shaft sleeve is provided with an axial through hole for mounting the sealing shaft sleeve on a rotor, the outer side of the sealing shaft sleeve is provided with ring teeth and a ring groove along the axial direction, and the surfaces of the ring teeth and the ring groove of the sealing shaft sleeve are provided with abradable high-temperature resistant coatings;
the axial center part of the static valve is provided with an annular groove and an annular tooth which are respectively matched with the annular tooth and the annular groove of the sealing shaft sleeve, the outer side of the static valve is provided with a fixed brim for mounting the static valve on the base, through holes with counter bores for mounting fastening screws are uniformly distributed on the fixed brim, a first outer cylindrical surface of the static valve is matched with the through holes of the base, a second outer cylindrical surface of the static valve is matched with an inner hole of the pressing cover, and the number of the static valves can be 2 or more than 2;
the base is provided with a through hole and a counter bore for installing the static valve, the base is provided with a threaded hole for fixing the static valve, and the base is provided with a threaded hole for fixing the pressing cover;
the pressing cover is provided with a through hole and a counter bore which are assembled with the static valve, the pressing cover is provided with a through hole with a counter bore which is used for fixing the pressing cover on the base and used for installing a fastening screw, and the pressing cover is provided with a boss which is assembled with the counter bore of the base;
the fixing screws are arranged in the through holes of the counter bores of the static valve and the threaded holes on the base, so that the static valve is fixed;
and the locking screws are arranged in the through holes of the counter bores of the pressing cover tape and the threaded holes on the base, so that the sealing structure is locked and fixed.
The assembling process of the split type sealing structure of the radial flow turbocharging power generation system comprises the following steps:
a. determining the size parameters of the split type sealing structure of the radial flow turbocharging power generation system: according to the structural parameters of the radial flow turbocharging power generation system, determining the size parameters of the sealing shaft sleeve, the static valve, the base, the pressing cover, the fixing screw and the locking screw;
b. processing of a split type sealing component of the radial-flow turbocharging power generation system: processing a sealing shaft sleeve, a static valve, a base, a pressing cover, a fixing screw and a locking screw according to the size parameters of the split type sealing structure of the radial flow turbocharging power generation system determined in the step a;
c. assembling the stationary flap with the base: mounting the stationary valve on a base, and assembling and fixing by using a fixing screw;
d. assembling the pressing cover with the base and the static valve: and c, on the basis of finishing the step c, installing the pressing cover on the base, and fastening by using a locking screw to form a complete sealing structure.
A use method of the split type sealing structure of the radial flow turbocharging power generation system is provided.
Radial-flow turbocharging power generation system comprises the split type sealing structure of the radial-flow turbocharging power generation system
A working method of the radial flow turbocharging power generation system is provided.
The invention has the beneficial effects that:
according to the split type sealing structure of the radial flow turbocharging power generation system, the sealing shaft sleeve and the static valve adopt the structure that the plurality of ring teeth are matched with the ring grooves, so that working medium leakage can be effectively reduced, and the sealing reliability is improved; the surfaces of the ring teeth and the ring grooves of the sealing shaft sleeve are provided with abradable high-temperature resistant coatings, so that the adaptability of the sealing structure can be improved, the sealing shaft sleeve and the static valve are matched and rubbed in the working process, an optimal sealing interface is formed, and the sealing effect is fully guaranteed. 2 or more than 2 static petals are adopted, so that the sealing structure is convenient to mount and dismount, and the structure has good manufacturability; by adopting the structural form of the base and the pressing cover, the sealing structure is convenient to assemble, the rigidity of the whole sealing structure can be improved, the sealing structure can bear certain impact load, and the service life and the reliability of a system are improved. The split type sealing structure has good sealing effect and good manufacturability, and can effectively meet the sealing requirement of the rotor of the radial flow turbocharging power generation system.
Drawings
Fig. 1 is a schematic view of a split seal structure of a radial flow turbocharging power generation system.
Fig. 2 is a schematic view of a seal shaft sleeve structure.
Fig. 3 is a schematic view of a stationary flap configuration.
Fig. 4 is a schematic view of the base structure.
Fig. 5 is a schematic view of the hold-down cover structure.
1 sealing shaft sleeve 2 static valve 3 base 4 pressing cover 5 sealing shaft sleeve axial through hole 6 sealing shaft sleeve ring gear 7 sealing shaft sleeve ring gear of ring groove 8 static valve ring gear
9 ring groove of static valve 10 fixed brim 11 of static valve with through hole with counter bore
12 outer cylindrical surface of stationary lobe 13 outer cylindrical surface of stationary lobe 14 base through hole
15 base counter bore 16 base fixed static lamella screw hole
17 screw hole of base fixing pressing cover
18 through-hole of press cap 19 counter bore 20 of press cap presses through-hole of counter bore of cover tape
21 pressing cover boss
Detailed Description
A split type sealing structure of a radial flow turbocharging power generation system comprises a sealing shaft sleeve 1, a static valve 2, a base 3, a pressing cover 4, a fixing screw and a locking screw.
The center of the sealing shaft sleeve 1 is provided with an axial through hole 5 for mounting the sealing shaft sleeve on a rotor, the outer side of the sealing shaft sleeve 1 is provided with ring teeth 6 and a ring groove 7 along the axial direction, and the surfaces of the ring teeth 6 and the ring groove 7 of the sealing shaft sleeve 1 are provided with abradable high-temperature resistant coatings;
the axial center part of the static valve 2 is provided with an annular groove 9 and an annular groove 8 which are respectively matched with the annular tooth 6 and the annular groove 7 of the sealing shaft sleeve 1, the outer side of the static valve 2 is provided with a fixed eave 10 for installing the static valve on the base 3, through holes 11 with counter bores for installing fastening screws are uniformly distributed on the fixed eave 10, the outer cylindrical surface 12 of the static valve 2 is matched with the through hole 14 of the base 3, the outer cylindrical surface 13 of the static valve 2 is matched with the inner hole 18 of the pressing cover 4, and the number of the static valves 2 can be 2 or more than 2;
a through hole 14 and a counter bore 15 for installing the static valve 2 are formed in the base 3, a threaded hole 16 for fixing the static valve 2 is formed in the base 3, and a threaded hole 17 for fixing the pressing cover 4 is formed in the base 3;
the pressing cover 4 is provided with a through hole 18 and a counter bore 19 which are assembled with the static valve 2, the pressing cover 4 is provided with a through hole 20 with a counter bore which is used for fixing the pressing cover on the base 3 and used for installing a fastening screw, and the pressing cover 4 is provided with a boss 21 which is assembled with the counter bore 15 of the base 3;
the fixing screws are arranged in the through holes 11 with counter bores of the static valve 2 and the threaded holes 16 on the base 3, so that the static valve 2 is fixed;
the locking screws are arranged in the through holes 20 with counter bores of the pressing cover 4 and the threaded holes 17 on the base 3, so that the sealing structure is locked and fixed.
The assembling process of the split type sealing structure of the radial flow turbocharging power generation system comprises the following steps:
a. determining the size parameters of the split type sealing structure of the radial flow turbocharging power generation system: according to the structural parameters of the radial flow turbocharging power generation system, the size parameters of the sealing shaft sleeve 1, the static valve 2, the base 3, the pressing cover 4, the fixing screw and the locking screw are determined;
b. processing of a split type sealing component of the radial-flow turbocharging power generation system: processing a sealing shaft sleeve 1, a static valve 2, a base 3, a pressing cover 4, a fixing screw and a locking screw according to the size parameters of the split type sealing structure of the radial flow turbocharging power generation system determined in the step a;
c. assembly of the stationary flap 2 with the base 3: the static valve 2 is arranged on the base 3 and is assembled and fixed by a fixing screw;
d. assembly of the hold-down cover 4 with the base 3 and the stationary flap 2: and c, on the basis of finishing the step c, installing the pressing cover 4 on the base 3, and fastening by using a locking screw to form a complete sealing structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a split type seal structure of runoff turbocharged power generation system which characterized in that: comprises a sealing shaft sleeve (1), a static valve (2), a base (3) and a pressing cover (4);
an axial through hole (5) for mounting the sealing shaft sleeve (1) on a rotor is formed in the center of the sealing shaft sleeve (1), and ring teeth (6) and a ring groove (7) are axially arranged on the outer side of the sealing shaft sleeve (1);
an annular groove (9) and an annular tooth (8) which are respectively matched with an annular tooth (6) and an annular groove (7) of a sealing shaft sleeve (1) are arranged at the axial center of the static valve (2), a fixed eave (10) for mounting the static valve (2) on the base (3) is arranged at the outer side of the static valve, through holes (11) with counter bores for mounting fastening screws are uniformly distributed on the fixed eave (10), a first outer cylindrical surface (12) of the static valve (2) is matched with a through hole (14) of the base (3), and a second outer cylindrical surface (13) of the static valve (2) is matched with an inner hole (18) of the pressing cover (4);
a through hole (14) for installing the static valve (2) and a counter bore (15) are formed in the base (3), a threaded hole (16) for fixing the static valve (2) is formed in the base (3), and a threaded hole (17) for fixing the pressing cover (4) is formed in the base (3);
the pressing cover (4) is provided with a through hole (18) and a counter bore (19) which are assembled with the static valve (2), the pressing cover (4) is provided with a through hole (20) which is used for fixing the pressing cover on the base (3) and is provided with a counter bore for installing a fastening screw, and the pressing cover (4) is provided with a boss (21) which is assembled with the counter bore (15) of the base (3).
2. The split type sealing structure of the radial flow turbocharging power generation system according to claim 1, characterized in that: the sealing structure further comprises a fixing screw and a locking screw, wherein the fixing screw is arranged in a through hole (11) with a counter bore of the static valve (2) and a threaded hole (16) on the base (3) to fix the static valve (2);
the locking screw is arranged in a through hole (20) with a counter bore of the pressing cover (4) and a threaded hole (17) on the base (3), so that the sealing structure is locked and fixed.
3. The split type sealing structure of the radial flow turbocharging power generation system according to claim 2, characterized in that: the surface of the ring tooth (6) of the sealing shaft sleeve (1) is provided with an abradable high-temperature resistant coating.
4. The split type sealing structure of the radial flow turbocharging power generation system according to claim 2, characterized in that: the surface of the ring groove (7) of the sealing shaft sleeve (1) is provided with an abradable high-temperature resistant coating.
5. The split type sealing structure of the radial flow turbocharging power generation system according to claim 2, characterized in that: the number of the static valves (2) is 2.
6. The split type sealing structure of the radial flow turbocharging power generation system according to claim 2, characterized in that: the number of the static valves (2) is more than 2.
7. A process for assembling a split seal structure of a radial flow turbocharging power generation system according to any one of claims 2 to 6, which comprises the following steps:
a. determining the size parameters of the split type sealing structure of the radial flow turbocharging power generation system: according to the structural parameters of the radial flow turbocharging power generation system, determining the size parameters of the sealing shaft sleeve (1), the static valve (2), the base (3), the pressing cover (4), the fixing screw and the locking screw;
b. processing of a split type sealing structure of the radial flow turbocharging power generation system: according to the size parameters of the split type sealing structure of the radial flow turbocharging power generation system determined in the step a, processing a sealing shaft sleeve (1), a static valve (2), a base (3), a pressing cover (4), a fixing screw and a locking screw;
c. assembling the stationary flap (2) with the base (3): the static valve (2) is arranged on the base (3) and is assembled and fixed by a fixing screw;
d. the assembly of the pressing cover (4) with the base (3) and the stationary flap (2): and c, on the basis of finishing the step c, installing the pressing cover (4) on the base (3) and fastening by using a locking screw to form a complete sealing structure.
8. A method of using a split seal structure of a radial flow turbocharged power generation system of any one of claims 1 to 6.
9. A radial flow turbocharged power generation system comprising a split seal arrangement of a radial flow turbocharged power generation system according to any one of claims 1 to 6.
10. A method of operating a radial flow turbocharged power generation system as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326015.3A CN114033501A (en) | 2021-11-10 | 2021-11-10 | Split type seal structure of runoff turbocharging power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326015.3A CN114033501A (en) | 2021-11-10 | 2021-11-10 | Split type seal structure of runoff turbocharging power generation system |
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| Publication Number | Publication Date |
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| CN114033501A true CN114033501A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111326015.3A Pending CN114033501A (en) | 2021-11-10 | 2021-11-10 | Split type seal structure of runoff turbocharging power generation system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254006A (en) * | 2002-02-27 | 2003-09-10 | Toshiba Corp | Seal device and steam turbine |
| CN102192331A (en) * | 2010-03-16 | 2011-09-21 | 上海市离心机械研究所有限公司 | Axial and radial combined sealing device and assembling method thereof |
| CN204985326U (en) * | 2015-08-25 | 2016-01-20 | 中机洛阳轴承科技有限公司 | Cross cylindrical roller bearing of flanged and retaining ring |
| CN206268452U (en) * | 2016-12-20 | 2017-06-20 | 潍坊联信增压器制造有限公司 | Seal structure of turbocharger |
| JP2018119510A (en) * | 2017-01-27 | 2018-08-02 | 株式会社 Ａｃｒ | Turbocharging system |
| CN108547953A (en) * | 2018-06-15 | 2018-09-18 | 三门县金帆橡塑机械厂 | A kind of sealing device for mixer |
| CN110332018A (en) * | 2019-07-18 | 2019-10-15 | 北京动力机械研究所 | A kind of high compact closed cycle radial-flow turbine electricity generation system rotor |
| CN211288755U (en) * | 2019-11-29 | 2020-08-18 | 哈尔滨广瀚动力产业发展有限公司 | Air path sealing structure of turbine |
| US20210285461A1 (en) * | 2016-09-15 | 2021-09-16 | Siemens Aktiengesellschaft | Single-shaft turbo compressor |
-
2021
- 2021-11-10 CN CN202111326015.3A patent/CN114033501A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254006A (en) * | 2002-02-27 | 2003-09-10 | Toshiba Corp | Seal device and steam turbine |
| CN102192331A (en) * | 2010-03-16 | 2011-09-21 | 上海市离心机械研究所有限公司 | Axial and radial combined sealing device and assembling method thereof |
| CN204985326U (en) * | 2015-08-25 | 2016-01-20 | 中机洛阳轴承科技有限公司 | Cross cylindrical roller bearing of flanged and retaining ring |
| US20210285461A1 (en) * | 2016-09-15 | 2021-09-16 | Siemens Aktiengesellschaft | Single-shaft turbo compressor |
| CN206268452U (en) * | 2016-12-20 | 2017-06-20 | 潍坊联信增压器制造有限公司 | Seal structure of turbocharger |
| JP2018119510A (en) * | 2017-01-27 | 2018-08-02 | 株式会社 Ａｃｒ | Turbocharging system |
| CN108547953A (en) * | 2018-06-15 | 2018-09-18 | 三门县金帆橡塑机械厂 | A kind of sealing device for mixer |
| CN110332018A (en) * | 2019-07-18 | 2019-10-15 | 北京动力机械研究所 | A kind of high compact closed cycle radial-flow turbine electricity generation system rotor |
| CN211288755U (en) * | 2019-11-29 | 2020-08-18 | 哈尔滨广瀚动力产业发展有限公司 | Air path sealing structure of turbine |
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