CN211524913U - Nuclear power station steam turbine bearing oil baffle structure and steam turbine - Google Patents
Nuclear power station steam turbine bearing oil baffle structure and steam turbine Download PDFInfo
- Publication number
- CN211524913U CN211524913U CN201921474518.3U CN201921474518U CN211524913U CN 211524913 U CN211524913 U CN 211524913U CN 201921474518 U CN201921474518 U CN 201921474518U CN 211524913 U CN211524913 U CN 211524913U
- Authority
- CN
- China
- Prior art keywords
- oil
- baffle
- oil baffle
- rotor
- nuclear power
- 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
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model belongs to the technical field of the nuclear power station steam turbine, a nuclear power station steam turbine bearing oil fender structure and steam turbine are provided, nuclear power station steam turbine bearing oil fender structure includes: comprises a rotor, an outer oil catch and an inner oil catch; after the rotor passes through the outer oil baffle and the inner oil baffle, the outer oil baffle and the inner oil baffle are fixed on the rotor, the inner oil baffle is positioned in the bearing box body, and the outer oil baffle is arranged on the bearing box body; an oil discharge cavity is formed among the outer oil baffle, the inner oil baffle and the rotor, an oil discharge groove is formed in the inner wall of the oil discharge cavity, and the oil discharge groove is an annular groove which is formed in the end face of the outer oil baffle and is right opposite to the inner oil baffle and is used for surrounding the rotor. The utility model discloses an interior fender oil and setting up of keeping off oil outward seal the lubricating oil in the bearing housing, and through the timely discharge lubricating oil of oil extraction cavity, can prevent effectively that lubricating oil from leaking and splashing, have guaranteed the fail safe nature of steam turbine operation.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power station steam turbine, more specifically say, relate to a nuclear power station steam turbine bearing oil catch structure and steam turbine.
Background
When the existing bearing box body in a nuclear power station is installed in an engineering period, a stainless steel gasket is additionally arranged on the middle section of a bearing gland, the added stainless steel gasket is poor in sealing performance, lubricating oil is easy to spray out from a middle section oil port, and most of the lubricating oil can be directly sprayed onto an outer oil baffle when the lubricating oil is sprayed out from the middle section oil port of the thrust bearing due to the fact that the distance between the outer oil baffle of the bearing box body and the middle section oil port of the thrust bearing is short; secondly, an uneven gap exists between the thrust bearing pressure cover and the upper half of the thrust bearing, and lubricating oil can be sprayed to an outer oil baffle from the gap; and the thrust bearing oil inlet chambers are arranged at the front end and the rear end of the thrust bearing and are mainly sealed by oil seal rings, part of oil flows to the rotor on the outer side when lubricating oil enters the oil chambers, and the oil is thrown into the outer oil baffle when the rotor rotates at a high speed. When spraying the lubricating oil that outer oil kept off when more, outer oil keeps off and probably not can not arrange the oil and ooze and lead to getting rid of oil, and then can cause lubricating oil to fall on the basis of outer oil fender below, can cause lubricating oil to get rid of even on the bearing box surface, lead to the long-time oil deposit on bearing box surface and the nuclear power station scene ground, have very big potential safety hazard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nuclear power station steam turbine bearing oil shelves structure and steam turbine can prevent effectively that lubricating oil from leaking and splashing, and has guaranteed the fail safe nature of steam turbine operation.
In a first aspect, the utility model provides a bearing oil baffle structure, which comprises a rotor, an outer oil baffle and an inner oil baffle;
after the rotor penetrates through the outer oil catch and the inner oil catch, the outer oil catch and the inner oil catch are fixed on the rotor, the inner oil catch is located in a bearing box body, and the outer oil catch is installed on the bearing box body;
outer oil fender interior oil fender and form an oil extraction cavity between the rotor, just be provided with the oil extraction recess on the inner wall of oil extraction cavity, the oil extraction recess is for encircleing the rotor is sunken to be set up outer oil fender just to ring channel on the terminal surface of interior oil fender.
Further, the inner oil baffle comprises an inner oil baffle outer ring and an inner oil baffle inner ring; the inner oil baffle inner ring and the outer oil baffle are arranged in parallel, the inner oil baffle inner ring is vertically connected with the inner oil baffle outer ring, and one end, far away from the inner oil baffle inner ring, of the inner oil baffle outer ring is vertically connected with the outer oil baffle.
Further, the oil discharge groove is obliquely arranged on the end face, opposite to the inner oil stop, of the outer oil stop; a first oil inlet gap is formed at the joint of the outer ring of the inner oil retainer and the outer oil retainer; in any cross section where the bearing oil level structure of the nuclear power station turbine bearing is overlapped with the central axis of the rotor, the distance between the opening of the oil discharge groove and the first oil inlet gap is smaller than the distance between the bottom surface of the oil discharge groove and the first oil inlet gap; and an oil discharge hole is formed in the outer ring of the inner oil retainer.
Furthermore, a second oil inlet gap is arranged between the inner oil retainer inner ring and the rotor, and the rotor comprises a first step surface arranged opposite to the inner oil retainer, a second step surface arranged opposite to the outer oil retainer and an oil retaining surface arranged between the first step surface and the second step surface; the oil blocking surface is opposite to the second oil inlet gap.
Further, the outer oil baffle is connected with the rotor through oil seal teeth.
Further, the outer oil catch comprises an outer oil catch outer ring and an outer oil catch inner ring; the outer oil baffle inner ring comprises an installation baffle and an oil discharge baffle;
the outer wall of outer oil catch outer loop with the bearing housing body is connected, the inner wall of outer oil catch outer loop with the outer wall connection of installation separation blade, the inner wall of installation separation blade with the outer wall connection of oil extraction separation blade, the inner wall of oil extraction separation blade passes through the oil blanket tooth is connected the rotor.
Furthermore, a slot is formed in the position, corresponding to the oil seal teeth, of the rotor, and the oil seal teeth are installed in the slot.
Furthermore, one side of the outer oil shield, which is far away from the inner oil shield, is provided with an oil shield, the rotor penetrates through the oil shield, and the oil shield is connected to the bearing box body.
Further, the inner oil baffle is connected with the rotor through a sealing ring.
In a second aspect, the present embodiment further provides a steam turbine, including the above bearing oil stop structure.
The utility model provides a nuclear power station steam turbine bearing oil shelves structure and steam turbine keeps off oily and keep off the structure setting of oil outward through interior fender oil and seals up the lubricating oil in the bearing box, and in time discharges lubricating oil through the oil extraction cavity, can prevent lubricating oil leakage and splash effectively, has guaranteed the fail safe nature of steam turbine operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a bearing oil barrier structure of a steam turbine of a nuclear power plant according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a part of a bearing oil stop structure of a steam turbine of a nuclear power plant according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-a rotor; 2-external oil baffle; 21-outer oil retainer outer ring; 22-outer oil retainer inner ring; 221-installing a baffle plate; 222-oil drain baffle; 3-internal oil baffle; 31-inner oil catch inner ring; 32-inner oil retainer outer ring; 33-oil drain hole; 4-bearing housing; 5-oil discharge chamber; 51-oil drain grooves; 6-oil seal teeth.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Referring to fig. 1 and fig. 2, the structure of the oil stop of the turbine bearing of the nuclear power plant according to the present invention will now be described. The bearing oil baffle structure of the steam turbine of the nuclear power station comprises a rotor 1, an outer oil baffle 2 and an inner oil baffle 3;
after the rotor 1 passes through the outer oil catch 2 and the inner oil catch 3, the outer oil catch 2 and the inner oil catch 3 are fixed on the rotor 1, the inner oil catch 3 is located in a bearing box body 4, and the outer oil catch 2 is installed on the bearing box body 4; that is, the rotor 1 will pass through the inner diameters of the inner and outer oil dams 3, 2, and as the rotor 1 rotates, the outer and inner oil dams 2, 3 connected to the rotor 1 will rotate with the rotor 1.
The utility model provides a nuclear power station steam turbine bearing oil shelves structure keeps off oily 3 and keep off oily 2 structure setting outside through interior fender and seals up the lubricating oil in bearing box 4 to through the timely discharge lubricating oil of oil extraction cavity 5, can prevent effectively that lubricating oil from leaking and splashing, guaranteed the fail safe nature of steam turbine operation.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil baffle structure of the turbine bearing of the nuclear power station of the present invention, the inner oil baffle 3 includes an outer ring 31 of the inner oil baffle and an inner ring 32 of the inner oil baffle; the inner oil retainer inner ring 32 and the outer oil retainer 2 are arranged in parallel, the inner oil retainer inner ring 32 is vertically connected with the inner oil retainer outer ring 31, and one end, far away from the inner oil retainer inner ring 32, of the inner oil retainer outer ring 31 is vertically connected with the outer oil retainer 2. Understandably, in the rotation process of the rotor 1, the lubricating oil thrown out from the thrust bearing blocks most of the lubricating oil through the inner oil baffle inner ring 32, blocks a small part of the lubricating oil which is not blocked by the inner oil baffle inner ring 32 through the outer oil baffle 2 which is arranged in parallel with the inner oil baffle inner ring 32, seals the lubricating oil in the bearing box body 4 through the arrangement of the inner oil baffle inner ring 32 and the outer oil baffle 2, and further prevents the lubricating oil from leaking.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil baffle structure of the turbine bearing of the nuclear power plant provided by the present invention, the oil discharge groove 51 is inclined and arranged on the end surface of the outer oil baffle 2 opposite to the inner oil baffle 3; a first oil inlet gap is formed at the joint of the inner oil retainer outer ring 31 and the outer oil retainer 2; in any cross section where the oil level structure of the turbine bearing of the nuclear power station coincides with the central axis of the rotor 1, the distance between the opening of the oil discharge groove 51 and the first oil inlet gap is smaller than the distance between the bottom surface of the oil discharge groove 51 and the first oil inlet gap; the inner oil baffle outer ring 32 is provided with an oil discharge hole 33. Understandably, during the rotation of the rotor 1, a small part of the lubricating oil splashed on the outer oil baffle 2 flows into the oil discharge groove 51 from the first oil inlet gap along the inner side wall of the outer oil baffle 2 (i.e. the outer oil baffle 2 is opposite to the end surface of the inner oil baffle 3), further flows to the lower part of the outer oil baffle 2 along the oil discharge groove 51, and is discharged through the oil discharge hole 33 on the outer ring 31 of the inner oil baffle, so that oil can be discharged in time, and the operation reliability of the steam turbine is improved. Preferably, the size of the oil discharge hole 33 diameter can be set according to the requirement, and the larger the oil discharge hole 33 diameter is, the stronger the oil discharge capability is.
Further, please refer to fig. 1 and fig. 2 together, as a specific implementation manner of the oil level structure of the turbine bearing of the nuclear power station provided by the present invention, a second oil inlet gap is provided between the inner oil level inner ring 32 and the rotor 1, the rotor 1 includes a first step surface arranged opposite to the inner oil level 3, a second step surface arranged opposite to the outer oil level 2, and an oil blocking surface arranged between the first step surface and the second step surface; the oil blocking surface is opposite to the second oil inlet gap. Understandably, in the rotating process of the rotor 1, the inner oil baffle 3 can be effectively prevented from directly colliding and rubbing with the rotor 1 in the radial direction through the second oil inlet gap between the inner oil baffle inner ring 32 and the rotor 1, and the service life of the rotor 1 is further prolonged. Preferably, the size of the second oil inlet gap between the inner oil baffle inner ring 32 and the rotor 1 can be set according to requirements, for example, the second oil inlet gap is 3 mm. And understandably, because the inner oil catch 3 is connected on the outer oil catch 2, and the diameter of the rotor 1 at the axial position corresponding to the inner oil catch 3 is smaller, the inner diameter of the inner oil catch 3 is smaller than that of the outer oil catch 2, at the moment, the oil thrown out from the thrust bearing during the rotation process of the rotor 1 is mostly blocked by the inner oil catch 3 and cannot be directly thrown to the joint of the outer oil catch 2 and the rotor 1, and because the diameter of the rotor 1 is poor, an oil blocking surface is formed, the oil flowing into the oil discharge chamber 5 from the second oil inlet gap of the outer oil catch 2 can be blocked by the oil blocking surface, the joint of the outer oil catch 2 and the rotor 1 cannot be directly thrown, the oil quantity required to be sealed at the joint is reduced, and the oil blocking capability is improved.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil baffle structure of the turbine bearing of the nuclear power plant provided by the present invention, the outer oil baffle 2 is connected with the rotor 1 through the oil seal teeth 6. Understandably, the lubricating oil thrown out from the thrust bearing (the thrust bearing is used for supporting the rotor) in the rotation process of the rotor 1 is mostly blocked by the inner oil baffle 3, and the small part enters the oil discharge chamber 5, so that the oil seal teeth 6 at the joint of the outer oil baffle 2 and the rotor 1 can be utilized for sealing, and the lubricating oil is prevented from leaking. Preferably, the outer oil baffle 2 is provided with four or more oil seal teeth 6, and at this time, the lubricating oil entering the oil discharge chamber 5 can be sealed by the oil seal teeth 6 arranged step by step, so that the oil baffle effect is improved.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil baffle structure of the turbine bearing of the nuclear power plant provided by the present invention, the outer oil baffle 2 includes an outer oil baffle outer ring 21 and an outer oil baffle inner ring 22; the outer oil baffle inner ring 22 comprises a mounting baffle 221 and an oil drain baffle 222; the outer wall of the outer oil baffle outer ring is connected with the bearing box body 4, the inner wall of the outer oil baffle outer ring 21 is connected with the outer wall of the installation baffle 221, the inner wall of the installation baffle 221 is connected with the outer wall of the oil discharge baffle 222, and the inner wall of the oil discharge baffle 222 is connected with the rotor 1 through the oil seal teeth 6. Understandably, in the rotation process of the rotor 1, because the oil amount splashed to the outer oil baffle outer ring 21 is small, the inner oil baffle 3 does not need to be connected to the outer oil baffle outer ring 21, at the moment, the installation position of the inner oil baffle 3 can be determined according to the splashed oil amount, and then the size of the oil discharge chamber 5 formed by the outer oil baffle inner ring 22, the inner oil baffle 3 and the rotor is determined, so that the material cost is saved, and the oil baffle effect and the oil discharge effect can be met. Preferably, the installation baffle 221 is provided with at least one rooting point; the inner oil baffle outer ring is welded at the rooting point. At this time, the positioning welding is performed based on the rooting point 224, and the connection stability of the outer oil catch 2 and the inner oil catch 3 can be improved.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil level structure of the turbine bearing of the nuclear power plant provided by the present invention, a slot (not shown) is disposed at a position corresponding to the oil seal teeth 6 on the rotor 1, and the oil seal teeth 6 are installed in the slot. That is, the oil seal teeth 6 can be inserted into the corresponding slots, so that the oil blocking effect of the oil seal teeth 6 is further improved.
Further, please refer to fig. 1 and fig. 2 together, as a specific implementation manner of the oil baffle structure of the turbine bearing of the nuclear power plant provided by the present invention, one side of the outer oil baffle 2 away from the inner oil baffle 3 is provided with an oil baffle cover (not shown), the rotor 1 passes through the oil baffle cover, and the oil baffle cover is connected to the bearing box 4. That is, even if the lubricating oil in the bearing housing 5 seeps out from the oil seal teeth 6 during the rotation of the rotor 1, the oil can be further blocked by the oil blocking cover, preventing the lubricating oil from leaking.
Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the oil baffle structure of the turbine bearing of the nuclear power plant according to the present invention, the inner oil baffle 3 is connected to the rotor 1 through a sealing ring (not shown). That is, at rotor 1 rotation in-process, under the effect of sealing ring, the sealing ring all the time with rotor 1 in close contact with, guaranteed bearing housing 5's sealed oily effect of keeping off, and can alleviate the interior oil and keep off the rotor 1 wearing and tearing that inner ring 32 and rotor 1 radially directly bump the friction and cause.
The utility model also provides a steam turbine, nuclear power station steam turbine bearing oil shelves structure in above-mentioned embodiment.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A bearing oil baffle structure of a steam turbine of a nuclear power station is characterized by comprising a rotor, an outer oil baffle and an inner oil baffle;
after the rotor penetrates through the outer oil catch and the inner oil catch, the outer oil catch and the inner oil catch are fixed on the rotor, the inner oil catch is located in a bearing box body, and the outer oil catch is installed on the bearing box body;
outer oil fender interior oil fender and form an oil extraction cavity between the rotor, just be provided with the oil extraction recess on the inner wall of oil extraction cavity, the oil extraction recess is for encircleing the rotor is sunken to be set up outer oil fender just to ring channel on the terminal surface of interior oil fender.
2. The nuclear power plant turbine bearing oil baffle structure of claim 1, wherein the inner oil baffle comprises an inner oil baffle outer ring and an inner oil baffle inner ring; the inner oil baffle inner ring and the outer oil baffle are arranged in parallel, the inner oil baffle inner ring is vertically connected with the inner oil baffle outer ring, and one end, far away from the inner oil baffle inner ring, of the inner oil baffle outer ring is vertically connected with the outer oil baffle.
3. The nuclear power plant turbine bearing oil baffle structure of claim 2, wherein the oil drain groove is inclined at an end face of the outer oil baffle opposite to the inner oil baffle; a first oil inlet gap is formed at the joint of the outer ring of the inner oil retainer and the outer oil retainer; in any cross section where the bearing oil level structure of the nuclear power station turbine bearing is overlapped with the central axis of the rotor, the distance between the opening of the oil discharge groove and the first oil inlet gap is smaller than the distance between the bottom surface of the oil discharge groove and the first oil inlet gap; and an oil discharge hole is formed in the outer ring of the inner oil retainer.
4. The nuclear power plant turbine bearing oil baffle structure of claim 2, wherein a second oil inlet gap is provided between the inner oil baffle inner ring and the rotor, and the rotor includes a first step surface disposed opposite the inner oil baffle, a second step surface disposed opposite the outer oil baffle, and an oil baffle surface disposed between the first step surface and the second step surface; the oil blocking surface is opposite to the second oil inlet gap.
5. The nuclear power plant turbine bearing oil baffle structure of claim 1, wherein the outer oil baffle is connected to the rotor by oil seal teeth.
6. The nuclear power plant turbine bearing oil baffle structure of claim 5, wherein the outer oil baffle comprises an outer oil baffle outer ring and an outer oil baffle inner ring; the outer oil baffle inner ring comprises an installation baffle and an oil discharge baffle;
the outer wall of outer oil catch outer loop with the bearing housing body is connected, the inner wall of outer oil catch outer loop with the outer wall connection of installation separation blade, the inner wall of installation separation blade with the outer wall connection of oil extraction separation blade, the inner wall of oil extraction separation blade passes through the oil blanket tooth is connected the rotor.
7. The nuclear power plant steam turbine bearing oil baffle structure as defined in claim 5, wherein slots are provided in the rotor at positions corresponding to the oil seal teeth, and the oil seal teeth are mounted in the slots.
8. The nuclear power plant turbine bearing oil baffle structure as defined in claim 1, wherein an oil baffle cover is provided on a side of the outer oil baffle remote from the inner oil baffle, the rotor passes through the oil baffle cover, and the oil baffle cover is connected to the bearing housing.
9. The nuclear power plant turbine bearing oil baffle structure of claim 1, wherein the inner oil baffle is connected to the rotor by a seal ring.
10. A steam turbine comprising a nuclear power plant turbine bearing oil bearing structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474518.3U CN211524913U (en) | 2019-09-05 | 2019-09-05 | Nuclear power station steam turbine bearing oil baffle structure and steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474518.3U CN211524913U (en) | 2019-09-05 | 2019-09-05 | Nuclear power station steam turbine bearing oil baffle structure and steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211524913U true CN211524913U (en) | 2020-09-18 |
Family
ID=72458851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921474518.3U Active CN211524913U (en) | 2019-09-05 | 2019-09-05 | Nuclear power station steam turbine bearing oil baffle structure and steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211524913U (en) |
-
2019
- 2019-09-05 CN CN201921474518.3U patent/CN211524913U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104453892A (en) | Heading machine and inner spraying system of cutting part of heading machine | |
| CN211524913U (en) | Nuclear power station steam turbine bearing oil baffle structure and steam turbine | |
| CN204851521U (en) | Tidal power generation unit and become oar bearing thereof | |
| US20020140173A1 (en) | Sealing washer | |
| CN103629144A (en) | Vertical submerged pump bearing protection device | |
| CN116816491A (en) | Turbocharger | |
| JP3251838B2 (en) | Bearing device for vertical rotating machinery | |
| CN114233860A (en) | TBM and TBM main driving device | |
| CN104895726A (en) | Tidal power generator set and variable-pitch bearing thereof | |
| CN104948742B (en) | Non-contact type one-way sealing device used for high-speed rotary shafts | |
| CN209781239U (en) | submerged pump for conveying titanium tetrachloride | |
| CN112431863A (en) | Filamentation machine sealing structure | |
| CN219221057U (en) | Bearing protector | |
| CN212297584U (en) | Oil baffle sealing device of water feeding pump | |
| CN215215690U (en) | Oil leakage prevention bearing for powder concentrator | |
| CN216617985U (en) | Oil seal assembly and water feed pump | |
| CN212717650U (en) | Oil blocking structure of water guide bearing | |
| CN217558793U (en) | Labyrinth seal protection device for rolling mill bearing | |
| CN217583162U (en) | Oil-water isolation sealing structure of rotating shaft and permanent magnet speed regulator | |
| CN218031113U (en) | Labyrinth seal structure for bearing seal | |
| CN220910465U (en) | Oil retainer structure with transverse pre-baffle | |
| CN219317193U (en) | Screw vacuum pump sealing structure | |
| CN219159089U (en) | Oil stain prevention device for guide bearing of hydroelectric generating set | |
| CN217712702U (en) | Steam turbine shaft seal oil baffle plate with heat insulation function | |
| CN204664413U (en) | For the contactless one-way sealing device in high speed rotating shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |