CN109057877B - Turbine stator structure for helium turbine - Google Patents
Turbine stator structure for helium turbine Download PDFInfo
- Publication number
- CN109057877B CN109057877B CN201811256006.XA CN201811256006A CN109057877B CN 109057877 B CN109057877 B CN 109057877B CN 201811256006 A CN201811256006 A CN 201811256006A CN 109057877 B CN109057877 B CN 109057877B
- Authority
- CN
- China
- Prior art keywords
- casing
- turbine
- air inlet
- guard ring
- clamping groove
- 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
- 239000001307 helium Substances 0.000 title claims abstract description 17
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 17
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000000112 cooling gas Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
Abstract
A turbine stator structure for a helium turbine relates to the field of turbines. The existing turbine is applied to a nuclear reactor, and has the problems that the whole turbine casing is integrated, the disassembly and the assembly are inconvenient, the whole stator structure of the turbine is overlong, and the efficiency of helium work is low. The invention comprises an air inlet casing, a turbine casing, an exhaust casing, a guider, a sealing guard ring and a bearing shell, wherein a flange at the rear end of the air inlet casing is connected with a flange at the front end of the turbine casing through bolts, and the flange at the rear end of the turbine casing is connected with a flange at the front end of the exhaust casing through bolts; the flange at the front end of the bearing shell is connected with the flange at the middle upper position inside the exhaust casing through bolts; the rear end of the exhaust casing is inserted into a clamping groove at the tail part of the bearing shell; the 6-level guide device group and the 6-level sealing guard ring are sequentially arranged in the clamping grooves of the air inlet casing and the air outlet casing one by one. The invention is used in helium turbines.
Description
Technical Field
The invention relates to the field of turbines, in particular to a turbine stator structure for a helium turbine.
Background
The existing turbine stator structure is not suitable for acting of a helium turbine, and the existing turbine is applied to a whole turbine casing in a nuclear reactor to form an integral shape, so that the existing turbine stator structure is inconvenient to assemble and disassemble; and the whole turbine stator structure is overlong, so that the initial temperature of the gas of helium entering the turbine and acting on the moving blades in the nuclear reactor is low, the working efficiency of the helium is low, and the performance requirement of pneumatic design cannot be met.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the existing turbine is applied to a nuclear reactor, and the whole turbine casing is integrated, so that the disassembly and assembly are inconvenient; and the whole turbine stator structure is overlong, and the efficiency of helium work doing is low.
The invention adopts the technical scheme for solving the technical problems that: the turbine stator structure for the helium turbine comprises a turbine casing, a guider, a sealing guard ring and a bearing shell, wherein the bearing shell stretches into the tail of the turbine casing and is fixedly connected with the tail of the turbine casing, and the sealing guard ring and a plurality of groups of the guider are fixed in clamping grooves in the turbine casing;
the turbine casing comprises an air inlet casing, a turbine casing and an exhaust casing, wherein flanges are respectively arranged at the front end and the rear end of the air inlet casing and the turbine casing, flanges are respectively arranged at the front end and the upper middle position of the interior of the exhaust casing, flanges are arranged at the front end of the bearing shell, and clamping grooves are arranged at the tail end of the bearing shell;
the flange at the rear end of the air inlet casing is connected with the flange at the front end of the turbine casing through bolts, and the flange at the rear end of the turbine casing is connected with the flange at the front end of the exhaust casing through bolts;
the front end of the bearing shell extends into the exhaust casing, and the tail end of the bearing shell is positioned outside the exhaust casing; the flange at the front end of the bearing shell is connected with the flange at the middle upper position inside the exhaust casing through bolts; the rear end of the exhaust casing is inserted into a clamping groove at the tail part of the bearing shell;
the guide device is divided into 6-level guide device groups, the front 3-level guide device groups are sequentially arranged in the clamping groove of the air inlet casing, the rear 3-level guide device groups are sequentially arranged in the clamping groove of the turbine casing, a first-level sealing guard ring is arranged between each two guide device groups and is clamped in the clamping groove of the turbine casing, and a first-level sealing guard ring is also arranged between the 6-level guide device group at the tail end of the turbine casing and the air outlet casing.
The beneficial effects of the invention are as follows: the invention is firstly applied to the helium turbine;
the turbine casing consists of three parts, and is connected through the flange, so that the turbine casing is convenient to assemble and disassemble; the front 3-stage guide device group and the front 3-stage sealing guard ring are arranged in the air inlet casing, so that the front 3-stage nozzle ring and the movable vane ring are also arranged in the air inlet casing, the structure of the whole turbine stator is shortened through the design, and the initial temperature of air inlet and the working efficiency of helium gas are effectively improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a turbine stator structure;
FIG. 2 is a schematic view of the structure of an intake casing;
FIG. 3 is a schematic view of a turbine case;
FIG. 4 is a schematic view of the structure of the inner casing;
FIG. 5 is a schematic view of the structure of an exhaust casing;
FIG. 6 is a schematic view of a bearing housing;
FIG. 7 is a schematic view of the structure of the guide;
fig. 8 is a schematic structural view of the seal protector.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments with reference to the accompanying drawings:
the first embodiment is as follows: referring to fig. 1, the turbine stator structure for a helium turbine according to the present embodiment includes a turbine casing 1, a guide 2, a seal protector 3, and a bearing housing 4, wherein the bearing housing 4 extends into the tail of the turbine casing 1 and is fixedly connected with the tail, and the seal protector 3 and the plurality of sets of guide 2 are fixed in a clamping groove inside the turbine casing 1;
the turbine casing comprises an air inlet casing 1-1, a turbine casing 1-2 and an air outlet casing 1-3, wherein the front end and the rear end of the air inlet casing 1-1 and the front end and the rear end of the turbine casing 1-2 are respectively provided with flanges, the front end and the middle upper position of the interior of the air outlet casing 1-3 are respectively provided with flanges, the front end of the bearing shell 4 is provided with a flange, and the tail end of the bearing shell is provided with a clamping groove;
the flange at the rear end of the air inlet casing 1-1 is connected with the flange at the front end of the turbine casing 1-2 through bolts, and the flange at the rear end of the turbine casing 1-2 is connected with the flange at the front end of the exhaust casing 1-3 through bolts;
the front end of the bearing shell 4 extends into the exhaust casing 1-3, and the tail end of the bearing shell is positioned outside the exhaust casing 1-3; the flange at the front end of the bearing shell 4 is connected with the flange at the middle upper position inside the exhaust casing 1-3 through bolts; the rear ends of the exhaust casings 1-3 are inserted into clamping grooves at the tail parts of the bearing shells 4;
the guide device 2 is divided into 6-level guide device groups, the front 3-level guide device groups are sequentially arranged in the clamping grooves of the air inlet casing 1-1, the rear 3-level guide device groups are sequentially arranged in the clamping grooves of the turbine casing 1-2, a first-level sealing protecting ring 3 is arranged between each two guide device groups and is clamped in the clamping grooves of the turbine casing 1, and a first-level sealing protecting ring 3 is also arranged between the 6-level guide device group at the tail end of the turbine casing 2 and the air outlet casing 1-3.
The turbine casing consists of the air inlet casing 1-1, the turbine casing 1-2 and the exhaust casing 1-3, and is connected through the flange to have three advantages, namely, the strength and the vibration characteristic of the whole machine are good, the structure is safe and reliable, and the connection and the positioning of parts are firm; secondly, the disassembly, the adjustment and the maintenance are convenient, and the service life of the turbine is prolonged; thirdly, the processing manufacturability is good, and the cost is low; the front 3-stage guide set and the front 3-stage sealing guard ring 3 are arranged in the air inlet casing 1-1, so that the front 3-stage nozzle ring and the movable vane ring are also arranged in the air inlet casing 1-1, the structure of the whole turbine stator is shortened through the design, and the initial temperature of air inlet and the working efficiency of helium gas are effectively improved.
The second embodiment is as follows: the present embodiment is described with reference to figures 1, 2 and 4,
as shown in fig. 2: the inside of the air inlet casing 1-1 is also provided with an inner casing 1-4, and the front 3-stage guide device group and the front 3-stage sealing guard ring 3 are sequentially and alternately arranged in the clamping groove of the inner casing 1-4 and are fixed in the air inlet casing 1-1 through the inner casing 1-4;
as shown in fig. 4: the tail ends of the inner cases 1-4 are provided with flanges; as shown in fig. 2: the tail end of the air inlet casing 1-1 is provided with pin holes, the front end of the inner casing 1-4 is clamped in a clamping groove in the air inlet casing 1-1, and a flange at the tail end is fixed in the pin holes at the tail end of the air inlet casing 1-1 through pins;
as shown in fig. 2: a fourth cooling gas channel 1-5 is formed between the air inlet casing 1-1 and the inner casing 1-4.
An inner casing is arranged in the air inlet casing, so that the guide device group and the sealing guard ring are convenient to detach and maintain.
Other components and connection modes are the same as in the first embodiment.
And a third specific embodiment: as shown in fig. 2 and 5: the air inlet casing 1-1 is also provided with two air inlet holes, and the air inlet holes are communicated with an air inlet channel 1-1-1 circumferentially arranged in the air inlet casing 1-1; and an exhaust channel 1-3-1 is circumferentially arranged in the exhaust casing 1-3.
The high-temperature helium enters the air inlet channel through the air inlet hole, is guided by the guide device group, and then acts on the moving blades of the rotor.
Other components and connection modes are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: as shown in fig. 2: the first cooling gas passage 5, the second cooling gas passage 1-4-1 and the third cooling gas passage 2-4 are provided on the intake casing 1-1, the inner casing 1-4 and the first stage guide, respectively, according to the present embodiment.
The cooling air flows sequentially through the first cooling air passage 5, the fourth cooling air passage 1-5, the second cooling air passage 1-4-1 and the third cooling air passage 2-1 to enter the turbine casing.
Other compositions and connection modes are the same as those of the first, second or third embodiments.
Fifth embodiment: as shown in fig. 1, 2 and 5, heat insulation layers are respectively laid on the inner walls of the air inlet casing 1-1 and the air outlet casing 1-3 in the embodiment, and heat insulation layers are also arranged between the guide devices and the casings in the 2 nd-stage guide device group and the rear 3 rd-stage guide device group.
Other compositions and connection modes are the same as any one of the first to fourth embodiments.
Specific embodiment six: the present embodiment will be described with reference to fig. 3, 4, 7 and 8, wherein the left end of the guide 2 according to the present embodiment is provided with a first guide fixing portion 2-1 and a first clamping groove 2-3, and the right end is provided with a second guide fixing portion 2-2; the left end of the sealing guard ring 3 is provided with a first guard ring fixing part 3-3 and a second clamping groove 3-1, and the right end is provided with a second guard ring fixing part 3-2;
the inner side of the turbine casing 1 is respectively provided with 6 guide clamping grooves 1-1-2 and 6 guard ring clamping grooves 1-1-3, and the guide clamping grooves 1-1-2 and the guard ring clamping grooves 1-1-3 are alternately arranged; the left end of the guide clamping groove 1-1-2 is provided with a guide clamping groove fixing part 1-1-4, and the left end of the guard ring clamping groove 1-1-3 is provided with a guard ring clamping groove fixing part 1-1-5;
the first guide fixing part 2-1 is fixed in the guide clamping groove 1-1-2, the guide clamping groove fixing part 1-1-4 and the second guard ring fixing part 3-2 are fixed in the first clamping groove 2-3, the second guide fixing part 2-2 and the guard ring clamping groove fixing part 1-1-5 are fixed in the second clamping groove 3-1, and the first guard ring fixing part 3-3 is fixed in the guard ring clamping groove 1-1-3.
The clamping grooves and the fixing parts are respectively arranged on the guide device and the sealing guard ring and are fixedly connected, so that the size of the whole turbine casing is reduced.
Other compositions and connection modes are the same as any one of the first to fifth embodiments.
Claims (5)
1. The utility model provides a turbine stator structure for helium turbine, includes turbine casing (1), director (2), seal guard ring (3) and bearing housing (4), bearing housing (4) stretch into in the afterbody of turbine casing (1) and carry out fixed connection, seal guard ring (3) and multiunit director (2) are fixed in the draw-in groove in turbine casing (1);
the method is characterized in that: the turbine casing comprises an air inlet casing (1-1), a turbine casing (1-2) and an air outlet casing (1-3), wherein flanges are respectively arranged at the front end and the rear end of the air inlet casing (1-1) and the turbine casing (1-2), flanges are respectively arranged at the front end and the upper middle position of the air outlet casing (1-3), flanges are respectively arranged at the front end of the bearing shell (4), and clamping grooves are arranged at the tail end of the bearing shell;
the flange at the rear end of the air inlet casing (1-1) is connected with the flange at the front end of the turbine casing (1-2) through bolts, and the flange at the rear end of the turbine casing (1-2) is connected with the flange at the front end of the air outlet casing (1-3) through bolts;
the front end of the bearing shell (4) extends into the exhaust casing (1-3), and the tail end of the bearing shell is positioned outside the exhaust casing (1-3); the flange at the front end of the bearing shell (4) is connected with the flange at the middle upper position inside the exhaust casing (1-3) through bolts; the rear end of the exhaust casing (1-3) is inserted into a clamping groove at the tail part of the bearing shell (4);
the guide device (2) is divided into 6 guide device groups, the front 3 guide device groups are sequentially arranged in the clamping groove of the air inlet casing (1-1), the rear 3 guide device groups are sequentially arranged in the clamping groove of the turbine casing (1-2), a first-stage sealing guard ring (3) is arranged between each guide device group and is clamped in the clamping groove of the turbine casing (1), and a first-stage sealing guard ring (3) is also arranged between the 6 guide device group at the tail end of the turbine casing (1-2) and the exhaust casing (1-3);
an inner casing (1-4) is further arranged in the air inlet casing (1-1), the front 3-stage guide device group and the front 3-stage sealing guard ring (3) are sequentially arranged in the clamping groove of the inner casing (1-4), and the inner casing (1-4) is fixed in the air inlet casing (1-1);
the tail end of the inner casing (1-4) is provided with a flange, the tail end of the air inlet casing (1-1) is provided with a pin hole, the front end of the inner casing (1-4) is clamped in a clamping groove in the air inlet casing (1-1), and the flange at the tail end is fixed in the pin hole at the tail end of the air inlet casing (1-1) through a pin;
a fourth cooling gas channel (1-5) is formed between the air inlet casing (1-1) and the inner casing (1-4).
2. The turbine stator structure of claim 1 wherein: the air inlet casing (1-1) is also provided with two air inlet holes, and the air inlet holes are communicated with an air inlet channel (1-1-1) circumferentially arranged in the air inlet casing (1-1); the exhaust casing (1-3) is internally provided with an exhaust passage (1-3-1) in the circumferential direction.
3. The turbine stator structure of claim 2 wherein: the air inlet casing (1-1), the inner casing (1-4) and the first-stage guide are respectively provided with a first cooling gas channel (5), a second cooling gas channel (1-4-1) and a third cooling gas channel (2-4).
4. A turbine stator structure according to claim 3, characterized in that: the inner walls of the air inlet casing (1-1) and the air outlet casing (1-3) are respectively paved with heat insulation layers, and heat insulation layers are also arranged between the guide devices in the 2 nd-level guide device group and the rear 3-level guide device group and the casing.
5. The turbine stator structure of claim 4 wherein: the left end of the guide (2) is provided with a first guide fixing part (2-1) and a first clamping groove (2-3), and the right end of the guide is provided with a second guide fixing part (2-2); the left end of the sealing guard ring (3) is provided with a first guard ring fixing part (3-3) and a second clamping groove (3-1), and the right end of the sealing guard ring is provided with a second guard ring fixing part (3-2);
6 guide clamping grooves (1-1-2) and 6 guard ring clamping grooves (1-1-3) are respectively formed in the inner side of the turbine casing (1), and the guide clamping grooves (1-1-2) and the guard ring clamping grooves (1-1-3) are alternately arranged; the left end of the guide clamping groove (1-1-2) is provided with a guide clamping groove fixing part (1-1-4), and the left end of the guard ring clamping groove (1-1-3) is provided with a guard ring clamping groove fixing part (1-1-5);
the first guide fixing part (2-1) is fixed in the guide clamping groove (1-1-2), the guide clamping groove fixing part (1-1-4) and the second guard ring fixing part (3-2) are fixed in the first clamping groove (2-3), the second guide fixing part (2-2) and the guard ring clamping groove fixing part (1-1-5) are fixed in the second clamping groove (3-1), and the first guard ring fixing part (3-3) is fixed in the guard ring clamping groove (1-1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811256006.XA CN109057877B (en) | 2018-10-26 | 2018-10-26 | Turbine stator structure for helium turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811256006.XA CN109057877B (en) | 2018-10-26 | 2018-10-26 | Turbine stator structure for helium turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109057877A CN109057877A (en) | 2018-12-21 |
| CN109057877B true CN109057877B (en) | 2023-11-28 |
Family
ID=64767634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811256006.XA Active CN109057877B (en) | 2018-10-26 | 2018-10-26 | Turbine stator structure for helium turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN109057877B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723507B (en) * | 2018-12-28 | 2023-09-12 | 中国船舶重工集团公司第七0三研究所 | Helium stacking turbine mechanism |
| CN111561480B (en) * | 2020-05-14 | 2022-02-22 | 中国航发沈阳发动机研究所 | Stator structure |
| CN115450713B (en) * | 2022-10-21 | 2023-01-17 | 中国航发沈阳发动机研究所 | Evenly-exhausting bearing frame assembly structure |
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| CN109057877A (en) | 2018-12-21 |
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