CN212360784U - Vertical hydrogenerator bearing seal structure - Google Patents
Vertical hydrogenerator bearing seal structure Download PDFInfo
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- CN212360784U CN212360784U CN202021112110.4U CN202021112110U CN212360784U CN 212360784 U CN212360784 U CN 212360784U CN 202021112110 U CN202021112110 U CN 202021112110U CN 212360784 U CN212360784 U CN 212360784U
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Abstract
The utility model relates to a vertical hydraulic generator bearing seal structure belongs to hydraulic turbine technical field, and the end cover setting is at hydraulic generator housing's upper and lower both ends, and the main shaft passes end cover center part, and both ends are all overlapped outside by interior sending about the main shaft and are equipped with labyrinth seal mechanism, T type seal structure and the lantern ring, and labyrinth seal mechanism, T type seal structure and the lantern ring are located between end cover and the thrust bearing, and the end cover is inside to be hollow structure, and the terminal surface is provided with the oilhole under the end cover, the inside oil mist processing mechanism that is provided with of end cover. The utility model discloses a be provided with labyrinth seal mechanism and T type seal structure and carry out the secondary seal, reach and reduce the outer leakage quantity of oil mist, remaining oil mist is concentrated through oil mist processing mechanism and is collected the processing, the effectual collecting ring that prevents oil mist pollution.
Description
Technical Field
The utility model relates to a hydraulic turbine technical field especially relates to a vertical hydraulic generator bearing seal structure.
Background
The hydraulic generator can be divided into a vertical type and a horizontal type according to the axial position. The large and medium-sized units are generally arranged in a vertical mode, and the horizontal mode is generally used for small units and through-flow units. The vertical hydraulic generator is divided into a suspension type and an umbrella type according to the support mode of a guide bearing. The umbrella type hydraulic generator is divided into a common umbrella type, a half umbrella type and a full umbrella type according to different positions of the upper frame and the lower frame, wherein the guide bearings are positioned. The stability of the suspension type hydraulic generator is better than that of an umbrella type hydraulic generator, a thrust bearing is small, the loss is small, the installation and the maintenance are convenient, and the consumption of steel is large. The umbrella type unit has low total height, and the height of a hydropower station workshop can be reduced. The horizontal hydraulic generator is generally used for the condition that the rotating speed is more than 375r/min and some small-capacity power stations. The through-flow type turbine generator set with the through-flow type structure is driven by the through-flow type turbine. A through-flow turbine is a special type of axial flow turbine with fixed or adjustable runner blades. The main characteristic is that the axis of the runner is arranged horizontally or obliquely and is consistent with the water flow direction of the water inlet pipe and the water outlet pipe of the water turbine. The tubular hydraulic generator has the advantages of compact structure and light weight, and is widely applied to power stations with low water heads.
The vertical water turbine generator set is a common type of hydroelectric power station and is widely applied in the world hydropower industry. The general vertical generator set is provided with two radial bearings and a thrust bearing, wherein the radial bearings bear radial loads, the thrust bearing bears axial loads, the bearings play an important role in the operation of the generator set, whether the bearings operate normally is related to whether the generator set can generate electricity normally, the safety of the generator set is influenced, the overhaul period and the service life of the generator set are influenced, and the normal maintenance workload of a hydropower station is seriously influenced.
When the unit operates, a large amount of oil mist is easily generated by hot oil of bearing lubricating oil after heat exchange between the radial bearing bush and the thrust bearing bush, the oil mist overflows through a gap between the bearing cover and the main shaft, particularly, the bearing generates a large amount of oil mist when the high-speed unit operates, and the overflowing oil mist pollutes the collecting ring.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the unit operation, the hot oil after radial bearing tile and thrust bearing tile heat exchange of bearing lubricating oil easily produces a large amount of oil mist, and the oil mist overflows through the clearance between bearing cap and main shaft, and especially high rotational speed unit operation bearing produces a large amount of oil mist, and the oil mist that overflows pollutes the problem of collecting ring, and then provides a vertical hydraulic generator bearing seal structure.
The utility model adopts the technical scheme that:
a vertical hydro-generator bearing seal structure comprising: a labyrinth sealing mechanism, a T-shaped sealing structure, a lantern ring, an end cover and an oil mist processing mechanism,
the end covers are arranged at the upper end and the lower end of the shell of the water turbine generator, the main shaft penetrates through the center of the end cover, the labyrinth sealing mechanism, the T-shaped sealing structure and the lantern ring are sleeved at the upper end and the lower end of the main shaft from inside to outside, the labyrinth sealing mechanism, the T-shaped sealing structure and the lantern ring are located between the end cover and the thrust bearing, the end cover is internally of a hollow structure, oil holes are formed in the lower end face of the end cover, and an oil mist treatment.
Further, the labyrinth seal mechanism includes: the main shaft is sleeved with a main shaft lantern ring, a shell lantern ring and sealing rings, the end part of a shell of the hydraulic generator is provided with the shell lantern ring, the shell lantern ring and the main shaft lantern ring are coaxially arranged, the side walls of the shell lantern ring and the main shaft lantern ring are sleeved with a plurality of sealing rings, and the sealing rings on the shell lantern ring and the side walls of the main shaft lantern ring are alternately arranged.
Further, the T-shaped sealing structure includes: first lantern ring, the second lantern ring, base ring and T type ring, hydraulic generator casing tip is provided with the first lantern ring and the second lantern ring, and first lantern ring and second lantern ring contact surface are opened there is L type spout, and two L type spouts constitute T type spout, and the cover is equipped with the base ring on the main shaft, and base ring outer wall cover is equipped with T type ring, and T type ring is arranged in T type spout and is slided in it in, and first lantern ring is located the second lantern ring inboard, is provided with the lantern ring between the second lantern ring and the end cover.
Further, the oil mist treatment mechanism includes: the end cover is provided with a high-pressure gas injection pipeline and a high-pressure gas discharge pipeline which are communicated with the inner cavity of the end cover.
Further, the oil mist treatment mechanism includes: clamping ring and non-woven fabrics oil absorption layer, open the end cover terminal surface has the ring channel, and the ring channel communicates with the inside cavity of end cover, is provided with the non-woven fabrics oil absorption layer that is used for absorbing the oil mist in the inside cavity of end cover, is provided with the clamping ring in the ring channel, and the clamping ring passes through the bolt and links to each other with the end cover, and the inside semiconductor refrigeration piece that is provided with of non.
Further, the inner wall of the end cover is provided with a sealing ring.
The utility model discloses following beneficial effect has to prior art:
the utility model discloses a be provided with labyrinth seal mechanism and T type seal structure and carry out the secondary seal, reach and reduce the outer leakage quantity of oil mist, remaining oil mist is concentrated through oil mist processing mechanism and is collected the processing, the effectual collecting ring that prevents oil mist pollution.
The utility model discloses a sealing ring on the main shaft lantern ring and the sealing ring on the casing lantern ring are arranged in turn, there is the clearance between the sealing ring tip on the main shaft lantern ring and the casing lantern ring lateral wall simultaneously, the sealing ring tip on the casing lantern ring also has the clearance with main shaft lantern ring lateral wall, adjacent sealing ring has the clearance, ensure that main shaft and hydraulic generator casing do not take place direct contact through other parts, the frictional force has been reduced, and then the temperature of main shaft has been reduced, the production of oil mist has finally been reduced, the auxiliary action has been played to getting rid of the oil mist.
The utility model is provided with two sets of oil mist treatment mechanisms, one is that the oil mist is driven by the fluidity of the high-pressure airflow to be discharged out of the shell of the hydraulic generator through the high-pressure gas discharge pipeline for centralized treatment, and the service cycle is long; secondly, the semiconductor refrigeration piece is liquefied after being cooled and is adsorbed by the non-woven fabric oil absorption layer, and the compression ring is arranged, so that the non-woven fabric oil absorption layer can be replaced after the compression ring is detached, and the manufacturing cost is low.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention;
fig. 4 is a partial enlarged view of B in fig. 3 according to the present invention;
in the figure, 1-labyrinth seal mechanism, 11-spindle sleeve ring, 12-housing sleeve ring, 13-seal ring, 2-T type seal structure, 21-first sleeve ring, 22-second sleeve ring, 23-base ring, 24-T type ring, 3-sleeve ring, 4-end cover, 5-oil mist treatment mechanism, 51-high pressure gas injection pipeline, 52-high pressure gas discharge pipeline, 53-pressure ring, 54-non-woven fabric oil absorption layer, 6-water wheel generator housing, 7-spindle, 8-thrust bearing, 9-oil passing hole and 10-seal ring.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
First embodiment, which will be described with reference to fig. 1 to 4, a vertical water turbine generator bearing sealing structure includes: a labyrinth sealing mechanism 1, a T-shaped sealing structure 2, a lantern ring 3, an end cover 4 and an oil mist processing mechanism 5,
The labyrinth seal mechanism 1 includes: the water turbine generator comprises a main shaft sleeve ring 11, a shell sleeve ring 12 and sealing rings 13, wherein the main shaft 7 is sleeved with the main shaft sleeve ring 11, the end part of a water turbine generator shell 6 is provided with the shell sleeve ring 12, the shell sleeve ring 12 and the main shaft sleeve ring 11 are coaxially arranged, the side walls of the shell sleeve ring 12 and the main shaft sleeve ring 11 are sleeved with a plurality of sealing rings 13, the sealing rings 13 on the shell sleeve ring 12 and the sealing rings 13 on the side walls of the main shaft sleeve ring 11 are alternately arranged, in this way, the sealing rings 13 on the main shaft sleeve ring 11 and the sealing rings 13 on the shell sleeve ring 12 are alternately arranged, meanwhile, gaps exist between the end parts of the sealing rings 13 on the main shaft sleeve ring 11 and the side walls of the shell sleeve ring 12, gaps also exist between the end parts of the sealing rings 13 on the shell sleeve ring 12, thereby reducing the temperature of the main shaft 7, finally reducing the generation of oil mist and playing an auxiliary role in removing the oil mist.
The T-shaped seal structure 2 includes: the end part of the water turbine generator shell 6 is provided with a first sleeve ring 21 and a second sleeve ring 22, the contact surface of the first sleeve ring 21 and the second sleeve ring 22 is provided with an L-shaped chute, the two L-shaped chutes form a T-shaped chute, the main shaft 7 is sleeved with the base ring 23, the outer wall of the base ring 23 is sleeved with the T-shaped ring 24, the T-shaped ring 24 is arranged in the T-shaped chute and slides in the T-shaped chute, the first sleeve ring 21 is positioned at the inner side of the second sleeve ring 22, the sleeve ring 3 is arranged between the second sleeve ring 22 and the end cover 4, so that a gap exists between the T-shaped ring 24 and the T-shaped chute, the friction force is reduced, the temperature of the main shaft 7 is further reduced, the generation of oil mist is finally reduced, the oil mist is removed, the first sleeve ring 21 and the second sleeve ring 22 are not integrally cast, and the assembly process can be carried out singly without integrally assembling the T-shaped ring and the T24 after being assembled, external impacts are reduced.
The oil mist treatment mechanism 5 includes: the end cover 4 is provided with a high-pressure gas injection pipeline 51 and a high-pressure gas discharge pipeline 52, and the high-pressure gas injection pipeline 51 and the high-pressure gas discharge pipeline 52 are both communicated with the inner cavity of the end cover 4. The inner wall of the end cover 4 is provided with a sealing ring 10, so that the oil mist is driven by the fluidity of the high-pressure air flow to be discharged outside the water-wheel generator housing 6 through the high-pressure air discharge pipeline 52 for centralized treatment.
Example two: the description is made with reference to the accompanying drawings 1-4: a vertical hydro-generator bearing seal structure comprising: a labyrinth sealing mechanism 1, a T-shaped sealing structure 2, a lantern ring 3, an end cover 4 and an oil mist processing mechanism 5,
The labyrinth seal mechanism 1 includes: the water turbine generator comprises a main shaft sleeve ring 11, a shell sleeve ring 12 and sealing rings 13, wherein the main shaft 7 is sleeved with the main shaft sleeve ring 11, the end part of a water turbine generator shell 6 is provided with the shell sleeve ring 12, the shell sleeve ring 12 and the main shaft sleeve ring 11 are coaxially arranged, the side walls of the shell sleeve ring 12 and the main shaft sleeve ring 11 are sleeved with a plurality of sealing rings 13, the sealing rings 13 on the shell sleeve ring 12 and the sealing rings 13 on the side walls of the main shaft sleeve ring 11 are alternately arranged, in this way, the sealing rings 13 on the main shaft sleeve ring 11 and the sealing rings 13 on the shell sleeve ring 12 are alternately arranged, meanwhile, gaps exist between the end parts of the sealing rings 13 on the main shaft sleeve ring 11 and the side walls of the shell sleeve ring 12, gaps also exist between the end parts of the sealing rings 13 on the shell sleeve ring 12, thereby reducing the temperature of the main shaft 7, finally reducing the generation of oil mist and playing an auxiliary role in removing the oil mist.
The T-shaped seal structure 2 includes: the end part of the water turbine generator shell 6 is provided with a first sleeve ring 21 and a second sleeve ring 22, the contact surface of the first sleeve ring 21 and the second sleeve ring 22 is provided with an L-shaped chute, the two L-shaped chutes form a T-shaped chute, the main shaft 7 is sleeved with the base ring 23, the outer wall of the base ring 23 is sleeved with the T-shaped ring 24, the T-shaped ring 24 is arranged in the T-shaped chute and slides in the T-shaped chute, the first sleeve ring 21 is positioned at the inner side of the second sleeve ring 22, the sleeve ring 3 is arranged between the second sleeve ring 22 and the end cover 4, so that a gap exists between the T-shaped ring 24 and the T-shaped chute, the friction force is reduced, the temperature of the main shaft 7 is further reduced, the generation of oil mist is finally reduced, the oil mist is removed, the first sleeve ring 21 and the second sleeve ring 22 are not integrally cast, and the assembly process can be carried out singly without integrally assembling the T-shaped ring and the T24 after being assembled, external impacts are reduced.
The oil mist treatment mechanism 5 includes: clamping ring 53 and non-woven fabrics oil absorption layer 54, open 4 terminal surfaces of end cover has the ring channel, and the ring channel communicates with the inside cavity of end cover 4, is provided with the non-woven fabrics oil absorption layer 54 that is used for absorbing the oil mist in the inside cavity of end cover 4, is provided with clamping ring 53 in the ring channel, and the inside semiconductor refrigeration piece that is provided with of non-woven fabrics oil absorption layer 54, clamping ring 53 pass through the bolt and link to each other with end. The inner wall of the end cover 4 is provided with the sealing ring 10, so the arrangement is realized, a small amount of leaked oil mist is moved to the non-woven fabric oil absorption layer 54 and is liquefied after being cooled by the semiconductor refrigeration sheet and is absorbed by the non-woven fabric oil absorption layer 54, meanwhile, the pressing ring 53 is arranged, the non-woven fabric oil absorption layer 54 can be replaced after the pressing ring 53 is detached, and as the amount of leaked oil mist is very small after the secondary sealing of the labyrinth sealing mechanism 1 and the T-shaped sealing structure 2, the adsorption saturation time of the non-woven fabric oil absorption layer 54 can be correspondingly prolonged, and the maintenance period of the.
The working process is as follows:
firstly, oil mist is subjected to first blocking sealing through the labyrinth sealing mechanism 1, a small amount of oil mist is subjected to secondary sealing through the T-shaped sealing structure 2, and finally leaked oil mist enters a cavity in the end cover 4 and is treated through the oil mist treatment mechanism 5.
In the first embodiment, the oil mist entering the cavity of the end cap 4 is guided by the high-pressure airflow and discharged by the high-pressure gas discharge pipeline 52 for collection, and the oil mist amount is reduced after the leakage amount is secondarily sealed, so that intermittent oil mist treatment can be performed periodically.
In the second embodiment, the oil mist is liquefied by the semiconductor refrigeration sheet and then absorbed by the non-woven fabric oil absorption layer 54, and then the compression ring 53 can be detached to perform uniform recovery processing.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A vertical hydro-generator bearing seal structure comprising: a labyrinth sealing mechanism (1), a T-shaped sealing structure (2), a lantern ring (3), an end cover (4) and an oil mist processing mechanism (5),
end cover (4) set up the upper and lower both ends at hydraulic generator casing (6), end cover (4) central point is passed in main shaft (7), both ends are all overlapped by interior upper and lower both ends of main shaft (7) and are equipped with labyrinth seal mechanism (1), T type seal structure (2) and lantern ring (3), labyrinth seal mechanism (1), T type seal structure (2) and lantern ring (3) are located between end cover (4) and thrust bearing (8), the inside hollow structure that is of end cover (4), end cover (4) lower terminal surface is provided with oilhole (9), inside oil mist processing mechanism (5) that is provided with of end cover (4).
2. A vertical hydro-generator bearing seal structure according to claim 1 wherein the labyrinth seal mechanism (1) comprises: the water turbine generator is characterized by comprising a main shaft sleeve ring (11), a shell sleeve ring (12) and sealing rings (13), wherein the main shaft sleeve ring (11) is sleeved on the main shaft (7), the end part of a water turbine generator shell (6) is provided with the shell sleeve ring (12), the shell sleeve ring (12) and the main shaft sleeve ring (11) are coaxially arranged, the shell sleeve ring (12) and the side wall of the main shaft sleeve ring (11) are sleeved with the sealing rings (13), and the sealing rings (13) on the shell sleeve ring (12) and the sealing rings (13) on the side wall of the main shaft sleeve ring.
3. A vertical hydro-generator bearing seal according to claim 2 wherein the T-seal (2) comprises: first lantern ring (21), the second lantern ring (22), base ring (23) and T type ring (24), hydraulic generator casing (6) tip is provided with first lantern ring (21) and the second lantern ring (22), first lantern ring (21) and second lantern ring (22) contact surface are opened there are L type spout, two L type spouts constitute T type spout, the cover is equipped with base ring (23) on main shaft (7), base ring (23) outer wall cover is equipped with T type ring (24), T type ring (24) are arranged in T type spout and are slided in it, first lantern ring (21) are located second lantern ring (22) inboardly, be provided with between second lantern ring (22) and end cover (4) the lantern ring (3).
4. A vertical hydro-generator bearing seal structure according to claim 3 wherein the oil mist treatment mechanism (5) comprises: the high-pressure gas injection device comprises a high-pressure gas injection pipeline (51) and a high-pressure gas discharge pipeline (52), wherein the end cover (4) is provided with the high-pressure gas injection pipeline (51) and the high-pressure gas discharge pipeline (52), and the high-pressure gas injection pipeline (51) and the high-pressure gas discharge pipeline (52) are communicated with a cavity inside the end cover (4).
5. A vertical hydro-generator bearing seal structure according to claim 3 wherein the oil mist treatment mechanism (5) comprises: clamping ring (53) and non-woven fabrics oil absorption layer (54), end cover (4) terminal surface is opened there is the ring channel, and the ring channel communicates with the inside cavity of end cover (4), is provided with non-woven fabrics oil absorption layer (54) that are used for absorbing the oil mist in the inside cavity of end cover (4), is provided with clamping ring (53) in the ring channel, and clamping ring (53) link to each other with end cover (4) through the bolt, and non-woven fabrics oil absorption layer (54) is inside to be provided with the semiconductor refrigeration.
6. A vertical hydro-generator bearing seal structure according to claim 1 characterised in that the inner wall of the end cap (4) is provided with a sealing ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021112110.4U CN212360784U (en) | 2020-06-16 | 2020-06-16 | Vertical hydrogenerator bearing seal structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021112110.4U CN212360784U (en) | 2020-06-16 | 2020-06-16 | Vertical hydrogenerator bearing seal structure |
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| CN212360784U true CN212360784U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021112110.4U Active CN212360784U (en) | 2020-06-16 | 2020-06-16 | Vertical hydrogenerator bearing seal structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342294A (en) * | 2022-07-22 | 2022-11-15 | 天津市天发重型水电设备制造有限公司 | Novel bearing oil mist collection device |
-
2020
- 2020-06-16 CN CN202021112110.4U patent/CN212360784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342294A (en) * | 2022-07-22 | 2022-11-15 | 天津市天发重型水电设备制造有限公司 | Novel bearing oil mist collection device |
| CN115342294B (en) * | 2022-07-22 | 2023-09-12 | 天津市天发重型水电设备制造有限公司 | Bearing oil mist collection device |
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