CN205297656U - Combined type atmoseal device - Google Patents
Combined type atmoseal device Download PDFInfo
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- CN205297656U CN205297656U CN201521054988.6U CN201521054988U CN205297656U CN 205297656 U CN205297656 U CN 205297656U CN 201521054988 U CN201521054988 U CN 201521054988U CN 205297656 U CN205297656 U CN 205297656U
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Abstract
The utility model discloses a combined type atmoseal device, include: the seal part and the axle of cooperation installation, seal part is the atmoseal sealing with contact department of axle, wherein, the atmoseal sealing includes: establish space between seal part and the axle. The utility model discloses a scheme can overcome that sealed effect is poor among the prior art, life short and reliability low grade defect, realizes sealing the beneficial effect effectual, that life is long and the reliability is high.
Description
Technical field
This utility model relates to technical field of sealing technology, in particular it relates to a kind of combined type air seal set.
Background technology
Steam turbine has stator and rotor two large divisions. Operationally rotor high speed rotating, stator is fixed, and therefore must keep certain gap between rotor and stator, not make phase mutual friction. When steam flows through steam turbine each level work, pressure, temperature decline step by step, there is pressure reduction in dividing plate both sides. When moving vane has degree of reaction, before and after moving vane, there is also pressure reduction. Steam except the overwhelming majority from stator, movable vane passage flow through acting except, sub-fraction can flow through from various gaps and not do work, and becomes a kind of loss, reduces the efficiency of unit.
Rotor must also pass cylinder, is supported on bearing, also must leave gap herein. For the front end at high-pressure cylinder two ends and intermediate cylinder, the steam pressure in cylinder, more than external atmospheric pressure, will have steam to spill herein, and reduce unit efficiency, and cause partial coagulation water loss. At the exhaust end of intermediate pressure cylinder and the two ends of low pressure (LP) cylinder because the steam pressure in cylinder is lower than extraneous atmospheric pressure, pass in the gap of cylinder at main shaft, it will have air to leak in cylinder. Owing to air can not condense in condenser, thus reducing vacuum, reduce steam acting ability.
In order to reduce the gas leakage in above-mentioned gap everywhere, ensureing that steam turbine normal safe runs again, spy is provided with various packing. These packings can be divided into flow passage component packing, diaphragm gland and shaft end gland seal three major types. With regard to operation principle, this three classes packing all belongs to labyrinth gland.
Sealing device as shown in figs 1 to 6, the gas (including steam) being mainly used in turbomachinery seals in structure. Wherein, as shown in Figure 1, Figure 2, Figure 3 shows, its sealing principle is a fluid stream contraction, thermomechanical effect and frictional resistance effect to Comb Labyrinth Seals primary structure. The version of honeycomb seal: its sealing principle is thermodynamics, kinetic energy dissipation effect, multidirectional frictional resistance effect. As shown in Figure 4, Figure 5 and Figure 6.
The sealing device of existing turbomachinery, sealing effectiveness is not good, the seal member life-span is shorter, and, honeycomb seal penetration rate in welding processing manufactures is relatively low, easily falls off phenomenon in using.
In prior art, have that sealing effectiveness difference, service life is short and the defect such as reliability is low.
Utility model content
The purpose of this utility model is in that, for drawbacks described above, it is proposed to a kind of combined type air seal set, to solve by arranging space between axle and seal area, and lift-off seal effect, the problem reducing sealing difficulty.
This utility model provides a kind of combined type air seal set, including: coordinating the seal member and axle installed, the contact position of described seal member and axle is hermetic portion;Wherein, described hermetic portion, including: it is located at the space between described seal member and axle.
Preferably, described space, in the effective sealing area between described seal member and axle.
Preferably, in described space, it is provided with for regulating the air-flow catch by measuring; By described catch, according to the sealing demand between described axle and described seal member, regulate air-flow in described effective sealing area and pass through to measure.
Preferably, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, and every section of combined sealing structure includes honeycomb ceramics and seals tooth, and described axle includes axle body and corresponding with described honeycomb ceramics and be wound on the flange collar structure that described axle body is peripheral; Wherein, described space, including: the cavity between described honeycomb ceramics and described flange collar structure, cavity between described honeycomb ceramics and described sealing tooth, cavity between described seal member part and described axle body between described honeycomb ceramics and described sealing tooth, and the cavity between described sealing tooth and described axle body; The height of described honeycomb ceramics is less than the height of described sealing tooth, and the diameter of described flange collar structure is more than the diameter of described axle body.
Preferably, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes sealing tooth and honeycomb ceramics, and described axle includes axle body and and depressed corresponding with described sealing tooth is wound on the recessed coil structures that described axle body is peripheral; Wherein, described space, including: the cavity between described sealing tooth and described recessed coil structures, cavity between described honeycomb ceramics and described sealing tooth, cavity between described seal member part and described axle body between described honeycomb ceramics and described sealing tooth, and the cavity between described honeycomb ceramics and described axle body; The height of described sealing tooth is more than the height of described honeycomb ceramics, and the diameter of described recessed coil structures is less than the diameter of described axle body.
Preferably, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes spaced first sealing tooth, second sealing tooth and honeycomb ceramics, and described axle includes axle body and seals with described second that tooth is corresponding and depressed is wound on the recessed coil structures that described axle body is peripheral; Wherein, described space, including: described second seals the cavity between tooth and described recessed coil structures, described first seals the cavity that tooth and described second seals between tooth, described second seals the cavity between tooth and described honeycomb ceramics, described seal member seals tooth and described second described first and seals the cavity between tooth and between the described second part and described axle body sealing between tooth and honeycomb ceramics, described first seals the cavity between tooth and described axle body and the cavity between described honeycomb ceramics and described axle body; Described first height height equal to described honeycomb ceramics sealing tooth, described second seals the height height more than described honeycomb ceramics of tooth, and the diameter of described recessed coil structures is less than the diameter of described axle body.
Preferably, described seal member seals tooth and described second described first and seals the volume of the part between tooth, more than described seal member at the described second volume sealing part between tooth and honeycomb ceramics;And/or, described adjacent two sections of combined sealing structures, the centrage along described honeycomb ceramics vertical direction is symmetrical arranged.
Preferably, in described hermetic portion, described seal member includes spaced multiple honeycomb ceramics; Wherein, described space, including: the cavity between adjacent honeycomb, the cavity between described seal member part and described axle between adjacent honeycomb, and the cavity between described honeycomb ceramics and axle.
Preferably, the plurality of honeycomb ceramics is that staged is arranged, and has corresponding hierarchic structure on described axle; Wherein, described space, including: the cavity between adjacent honeycomb, the cavity between described seal member stepped portion and the hierarchic structure of described axle between adjacent honeycomb, and the cavity between described honeycomb ceramics and axle.
Preferably, the height of described seal member part between adjacent honeycomb, highly consistent with described honeycomb ceramics; Or, the height of described seal member part between adjacent honeycomb, more than the height with described honeycomb ceramics; And the bottom notch of this part is in described seal member; Or, the height of described seal member part between adjacent honeycomb, less than the height with described honeycomb ceramics; And the bottom of this part protrudes from described seal member.
Scheme of the present utility model, on the basis of former Comb Labyrinth Seals and honeycomb seal, in conjunction with both advantages, does convergent improvement in structure. Thus, taking up room of honeycomb seal body is reduced, only remain effective and axle generation sealing area part, remainder then reserves cavity, so that it plays the function of Comb Labyrinth Seals, i.e. a fluid stream contraction, thermomechanical effect (dilatation blood pressure lowering), improve honeycomb seal penetration rate in welding processing manufactures simultaneously.
Thus, scheme of the present utility model solves the problem present situation that sealing effectiveness is not good and the seal member life-span is shorter of existing turbomachinery, and improve honeycomb seal penetration rate in welding processing manufactures, avoid the problem of generation of obscission in using, thus, overcome the defect that sealing effectiveness in prior art is poor, service life is short and reliability is low, it is achieved the beneficial effect that good sealing effect, long service life and reliability are high.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from description, or understand by implementing this utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model. In the accompanying drawings:
Fig. 1 is the structural representation of existing comb tooth sealing structure one;
Fig. 2 is the structural representation of existing comb tooth sealing structure two;
Fig. 3 is the structural representation of existing comb tooth sealing structure three;
Fig. 4 is the structural representation of existing honeycomb seal structure one;
Fig. 5 is the structural representation of existing honeycomb seal structure two;
Fig. 6 is the structural representation of existing honeycomb seal structure three;
Fig. 7 is the structural representation of an embodiment of combined type air seal set of the present utility model;
Fig. 8 is the structural representation of another embodiment of combined type air seal set of the present utility model;
Fig. 9 is the structural representation of the another embodiment of combined type air seal set of the present utility model;
Figure 10 is the structural representation of the Application Example one of combined type air seal set of the present utility model;
Figure 11 is the structural representation of the Application Example two of combined type air seal set of the present utility model;
Figure 12 is the structural representation of the Application Example three of combined type air seal set of the present utility model;
Figure 13 is the structural representation of the Application Example four of combined type air seal set of the present utility model;
Figure 14 is the structural representation of the Application Example five of combined type air seal set of the present utility model;
Figure 15 is the structural representation of the Application Example six of combined type air seal set of the present utility model.
In conjunction with accompanying drawing, in this utility model embodiment, accompanying drawing labelling is as follows:
1-seal member (or sealing matrix); 2-low-pressure side; 3-high-pressure side; 4-axle; 5-space; 6-seals tooth or comb; 7-honeycomb ceramics; 8-hermetic portion.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with this utility model specific embodiment and corresponding accompanying drawing, technical solutions of the utility model are clearly and completely described. Obviously, described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
According to embodiment of the present utility model, as shown in Fig. 7-Figure 15, it is provided that a kind of combined type air seal set.
The combined type air seal set of the present embodiment, including: coordinating the seal member (such as seal member or sealing matrix 1) and axle (such as axle 4) installed, the contact position of seal member and axle is hermetic portion (such as hermetic portion 8); Wherein, hermetic portion, including: it is located at the space (such as space 5) between seal member and axle. By this space, it is possible to lift-off seal effect, postpone the service life of seal member.
Wherein, space, in the effective sealing area between seal member and axle. By the space in effective sealing area, it is possible to lift-off seal effect better.
Preferably, in space, it is provided with for regulating the air-flow catch (not shown) by measuring; By catch, according to the sealing demand between axle and seal member, regulate air-flow in effective sealing area and pass through to measure. By regulating air-flow by measuring, it is possible under the premise ensureing sealing effectiveness, stablize the air-flow of effective sealing area further by measuring.
In one embodiment, as shown in Figure 7, in hermetic portion, seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes honeycomb ceramics (as honeycomb carries 7) and seals tooth (as sealed tooth or comb 6), and axle includes axle body and corresponding with honeycomb ceramics and be wound on the flange collar structure that axle body is peripheral; Wherein, space, including: the cavity between honeycomb ceramics and flange collar structure, honeycomb ceramics and the cavity sealed between tooth, seal member cavity between honeycomb ceramics and the part and the axle body that seal between tooth, and seal the cavity between tooth and axle body; The height of honeycomb ceramics is less than the height sealing tooth, and the diameter of flange collar structure is more than the diameter of axle body. By the space between honeycomb ceramics and sealing tooth, it is also possible to improve honeycomb seal penetration rate in welding processing manufactures, it is to avoid the generation of the obscission in use.
Wherein, honeycomb ceramics is located at low atmospheric pressure side (such as low-pressure side 2), seals tooth and is located at hyperbar side (such as high-pressure side 3).Used by the matched in clearance of the honeycomb ceramics of low-pressure side and on high-tension side sealing tooth, it is possible to make air-flow more stably circulate in space, good sealing effect, and reliability and stability can be protected.
In one embodiment, as shown in figure 13, in hermetic portion, seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes sealing tooth and honeycomb ceramics, and axle includes axle body and and depressed corresponding with sealing tooth is wound on the recessed coil structures that axle body is peripheral; Wherein, space, including: seal the cavity between tooth and recessed coil structures, honeycomb ceramics and the cavity sealed between tooth, seal member cavity between honeycomb ceramics and the part and the axle body that seal between tooth, and the cavity between honeycomb ceramics and axle body; Seal the height height more than honeycomb ceramics of tooth, and the diameter of recessed coil structures is less than the diameter of axle body.
In one embodiment, as shown in figure 15, in hermetic portion, seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes spaced first and seals tooth, the second sealing tooth and honeycomb ceramics, and axle includes axle body and the second sealing tooth is corresponding and depressed is wound on the recessed coil structures that axle body is peripheral; Wherein, space, including: second seals the cavity between tooth and recessed coil structures, first seals the cavity that tooth and second seals between tooth, second seals the cavity between tooth and honeycomb ceramics, seal member seals tooth and second first and seals the cavity between tooth and between the second part and axle body sealing between tooth and honeycomb ceramics, and first seals the cavity between tooth and axle body and the cavity between honeycomb ceramics and axle body; First height height equal to honeycomb ceramics sealing tooth, second seals the height height more than honeycomb ceramics of tooth, and the diameter of recessed coil structures is less than the diameter of axle body.
Wherein, seal member seals tooth and second first and seals the volume of the part between tooth, more than seal member at the second volume sealing part between tooth and honeycomb ceramics; And/or, adjacent two sections of combined sealing structures, the centrage along honeycomb ceramics vertical direction is symmetrical arranged.
Thus, by honeycomb ceramics with seal tooth with the use of, both can rely on the sealing advantage of honeycomb (such as: honeycomb ceramics), the advantage that simultaneously may utilize again labyrinth seal, thus lift-off seal effect better, postpone the service life of seal member, good in economic efficiency.
In one embodiment, as shown in Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 13 and Figure 14, in hermetic portion, seal member includes spaced multiple honeycomb ceramics; Wherein, space, including: the cavity between adjacent honeycomb, the cavity between seal member part and axle between adjacent honeycomb, and the cavity between honeycomb ceramics and axle.
Wherein, as shown in Figure 9, multiple honeycomb ceramics are that staged is arranged, and axle has corresponding hierarchic structure: wherein, space, including: the cavity between adjacent honeycomb, the cavity between seal member stepped portion and the hierarchic structure of axle between adjacent honeycomb, and the cavity between honeycomb ceramics and axle.
Such as: as shown in Figure 8, the height of seal member part between adjacent honeycomb, highly consistent with honeycomb ceramics.
Such as: as shown in Figure 11, Figure 12 and Figure 14, the height of seal member part between adjacent honeycomb, more than the height with honeycomb ceramics; And the bottom notch of this part is in seal member.
Such as: as shown in Figure 10, the height of seal member part between adjacent honeycomb, less than the height with honeycomb ceramics;And the bottom of this part protrudes from seal member.
Thus, arranged by the gap of the honeycomb ceramics of various ways, be possible not only to improve sealing effectiveness, but also can ensure that the penetration rate improving honeycomb seal in welding processing manufactures, it is to avoid the generation of the obscission in use, reliability and stability are greatly improved.
The technical solution of the utility model, space is left between axle and seal member (or sealing matrix) in hermetic portion, the parameter in space, it is possible to be configured according to the distance requirement between axle and seal area (such as: hermetic portion 8). Such as: example shown in Figure 7, comb tooth sealing structure shown in comparison diagram 1, it is part seals tooth (such as: seal tooth or comb 6) change honeycomb ceramics (such as: honeycomb ceramics 7) into, the advantage making it have honeycomb seal, namely kinetic energy dissipation effect, multidirectional frictional resistance effect; Honeycomb seal structure shown in comparison diagram 4, it is that taking up room of honeycomb seal body is reduced, only remain effective and axle 4 and the part of sealing area occurs, remainder then reserves cavity, so that it plays the function of Comb Labyrinth Seals, i.e. a fluid stream contraction, thermomechanical effect (dilatation blood pressure lowering).
Simultaneously, it is possible to improve honeycomb seal penetration rate in welding processing manufactures, it is to avoid the problem of the generation of the obscission in use. Because: sealing tooth work in-process many employings integral material that interdigitated electrode structure seals processes through lathe turning, so easily forms arc chord angle at root portion, and arc chord angle is owing to turning cutting tool fair wear and tear causes, it is impossible to avoid; This results in honeycomb ceramics in follow-up honeycomb welding procedure and cannot cannot fit tightly with welding matrix bottom surface, it is easily caused and does not weld, or the weld defect such as solder side incomplete contact between, it is not up to standard that this problem is referred to as penetration rate, receive gases at high pressure in using and impact easy to fall off, cause seal failure.
Such as: referring to the example shown in Fig. 8, Fig. 9, compared with the example shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, being also about to seal tooth change is honeycomb ceramics, but adopts segmental structure in integral arrangement, so both can rely on the sealing advantage of honeycomb, the advantage that simultaneously may utilize again labyrinth seal.
To sum up, scheme of the present utility model, is the Comb Labyrinth Seals parts for existing turbine plant or the improvement of honeycomb seal parts, through substantial amounts of verification experimental verification, the program can improve sealing property, meets or exceedes device systems gas leakage index, being finally reached the economic benefit of Synergistic and energy-saving.
It can further be stated that, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, commodity or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, commodity or equipment. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, commodity or equipment.
The foregoing is only embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations. All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within right of the present utility model.
Claims (10)
1. a combined type air seal set, it is characterised in that including: coordinating the seal member and axle installed, the contact position of described seal member and axle is hermetic portion; Wherein,
Described hermetic portion, including: it is located at the space between described seal member and axle.
2. combined type air seal set according to claim 1, it is characterised in that described space, in the effective sealing area between described seal member and axle.
3. combined type air seal set according to claim 2, it is characterised in that in described space, is provided with for regulating the air-flow catch by measuring; By described catch, according to the sealing demand between described axle and described seal member, regulate air-flow in described effective sealing area and pass through to measure.
4. combined type air seal set according to claim 1 and 2, it is characterized in that, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes honeycomb ceramics and seals tooth, and described axle includes axle body and corresponding with described honeycomb ceramics and be wound on the flange collar structure that described axle body is peripheral; Wherein,
Described space, including: the cavity between described honeycomb ceramics and described flange collar structure, cavity between described honeycomb ceramics and described sealing tooth, cavity between described seal member part and described axle body between described honeycomb ceramics and described sealing tooth, and the cavity between described sealing tooth and described axle body;
The height of described honeycomb ceramics is less than the height of described sealing tooth, and the diameter of described flange collar structure is more than the diameter of described axle body.
5. combined type air seal set according to claim 1 and 2, it is characterized in that, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes sealing tooth and honeycomb ceramics, and described axle includes axle body and and depressed corresponding with described sealing tooth is wound on the recessed coil structures that described axle body is peripheral; Wherein,
Described space, including: the cavity between described sealing tooth and described recessed coil structures, cavity between described honeycomb ceramics and described sealing tooth, cavity between described seal member part and described axle body between described honeycomb ceramics and described sealing tooth, and the cavity between described honeycomb ceramics and described axle body;
The height of described sealing tooth is more than the height of described honeycomb ceramics, and the diameter of described recessed coil structures is less than the diameter of described axle body.
6. combined type air seal set according to claim 1 and 2, it is characterized in that, in described hermetic portion, described seal member includes spaced multistage combined sealing structure, every section of combined sealing structure includes spaced first sealing tooth, second sealing tooth and honeycomb ceramics, and described axle includes axle body and seals with described second that tooth is corresponding and depressed is wound on the recessed coil structures that described axle body is peripheral; Wherein,
Described space, including: described second seals the cavity between tooth and described recessed coil structures, described first seals the cavity that tooth and described second seals between tooth, described second seals the cavity between tooth and described honeycomb ceramics, described seal member seals tooth and described second described first and seals the cavity between tooth and between the described second part and described axle body sealing between tooth and honeycomb ceramics, described first seals the cavity between tooth and described axle body and the cavity between described honeycomb ceramics and described axle body;
Described first height height equal to described honeycomb ceramics sealing tooth, described second seals the height height more than described honeycomb ceramics of tooth, and the diameter of described recessed coil structures is less than the diameter of described axle body.
7. combined type air seal set according to claim 6, it is characterized in that, described seal member seals tooth and described second described first and seals the volume of the part between tooth, more than described seal member at the described second volume sealing part between tooth and honeycomb ceramics; And/or,
Described adjacent two sections of combined sealing structures, the centrage along described honeycomb ceramics vertical direction is symmetrical arranged.
8. combined type air seal set according to claim 1 and 2, it is characterised in that in described hermetic portion, described seal member includes spaced multiple honeycomb ceramics; Wherein,
Described space, including: the cavity between adjacent honeycomb, the cavity between described seal member part and described axle between adjacent honeycomb, and the cavity between described honeycomb ceramics and axle.
9. combined type air seal set according to claim 8, it is characterised in that the plurality of honeycomb ceramics is that staged is arranged, and has corresponding hierarchic structure on described axle; Wherein,
Described space, including: the cavity between adjacent honeycomb, the cavity between described seal member stepped portion and the hierarchic structure of described axle between adjacent honeycomb, and the cavity between described honeycomb ceramics and axle.
10. combined type air seal set according to claim 8, it is characterised in that the height of described seal member part between adjacent honeycomb, highly consistent with described honeycomb ceramics; Or,
The height of described seal member part between adjacent honeycomb, more than the height with described honeycomb ceramics; And the bottom notch of this part is in described seal member; Or,
The height of described seal member part between adjacent honeycomb, less than the height with described honeycomb ceramics; And the bottom of this part protrudes from described seal member.
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|---|---|---|---|
| CN201521054988.6U CN205297656U (en) | 2015-12-18 | 2015-12-18 | Combined type atmoseal device |
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| CN201521054988.6U CN205297656U (en) | 2015-12-18 | 2015-12-18 | Combined type atmoseal device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083691A (en) * | 2018-09-21 | 2018-12-25 | 浙江巨源动力装备有限公司 | A kind of integration steam turbine generator sealing structure |
| CN112228160A (en) * | 2020-10-20 | 2021-01-15 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide rotor sectional cooling and sealing structure |
| CN112502787A (en) * | 2019-09-16 | 2021-03-16 | 中国石化工程建设有限公司 | A gas seal subassembly and flue gas turbine for flue gas turbine |
-
2015
- 2015-12-18 CN CN201521054988.6U patent/CN205297656U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083691A (en) * | 2018-09-21 | 2018-12-25 | 浙江巨源动力装备有限公司 | A kind of integration steam turbine generator sealing structure |
| CN112502787A (en) * | 2019-09-16 | 2021-03-16 | 中国石化工程建设有限公司 | A gas seal subassembly and flue gas turbine for flue gas turbine |
| CN112228160A (en) * | 2020-10-20 | 2021-01-15 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide rotor sectional cooling and sealing structure |
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