CN113028066B - Sealing assembly for main pump of nuclear power station - Google Patents
Sealing assembly for main pump of nuclear power station Download PDFInfo
- Publication number
- CN113028066B CN113028066B CN202110393871.4A CN202110393871A CN113028066B CN 113028066 B CN113028066 B CN 113028066B CN 202110393871 A CN202110393871 A CN 202110393871A CN 113028066 B CN113028066 B CN 113028066B
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- Prior art keywords
- ring
- groove
- wall
- fixedly connected
- abutting
- Prior art date
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- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 230000003068 static effect Effects 0.000 claims abstract description 34
- 238000013016 damping Methods 0.000 claims description 3
- 239000000306 component Substances 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
- F16J15/3472—Means for centering or aligning the contacting faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a sealing component for a main pump of a nuclear power station, which comprises the following components: a main pump housing; a rotating shaft is arranged in the main pump shell; the shaft sleeve is sleeved outside the rotating shaft; one side of the inner cavity of the main pump shell is fixedly connected with a static ring mechanism; the static ring mechanism is in abutting connection with the movable ring mechanism; the movable ring component comprises a movable ring groove; the movable ring groove is arranged on the bottom surface of the movable ring seat; the groove wall of the movable ring groove is circumferentially arrayed around the center of the movable ring groove and provided with a plurality of first elastic pieces; one end of the first elastic piece is fixedly connected with the groove wall at one side of the movable ring groove; the other end of the first elastic piece is fixedly connected with an abutting ring; one side of the abutting ring is circumferentially arrayed with a plurality of abutting columns around the center of the abutting ring; the groove wall at the other side of the movable ring groove is opened and provided with a positioning ring; an annular groove is formed in the annular wall on one side of the positioning ring; the bottom of the annular groove is provided with a plurality of positioning holes matched with the abutting columns; a movable ring is arranged at one side of the abutting column; the inner wall and the outer wall of the movable ring are in sliding connection with the groove wall of the annular groove; the leakage of the mechanical seal of the main pump can be avoided, and the safe and stable operation of the main pump is ensured.
Description
Technical Field
The invention relates to the technical field of main pump sealing, in particular to a sealing assembly for a main pump of a nuclear power station.
Background
The main pump of a nuclear power station reactor is a core component of the nuclear power station, in the prior art, a mechanical sealing mode is adopted for a sealing component of the main pump, but the conventional main pump mechanical sealing component frequently causes a medium leakage phenomenon, is easy to cause danger of constructors, and the shutdown maintenance of the nuclear power station seriously affects the production efficiency.
The mechanical seal is a shaft seal device of a rotary machine. Since the drive shaft extends through the device, there is a circumferential gap between the shaft and the device through which the medium in the device leaks out, and if the pressure in the device is below atmospheric pressure, air leaks into the device.
Therefore, how to avoid leakage of the mechanical seal of the main pump and ensure safe and stable operation of the main pump becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a sealing assembly for a main pump of a nuclear power station, which solves the problems in the prior art, can avoid leakage of a mechanical seal of the main pump, and ensures safe and stable operation of the main pump.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a sealing component for a main pump of a nuclear power station, which comprises the following components: a main pump housing; a rotating shaft is arranged in the main pump shell; the shaft sleeve is sleeved outside the rotating shaft; a stationary ring mechanism is fixedly connected to one side of the inner cavity of the main pump shell; the static ring mechanism is in abutting connection with the movable ring mechanism;
the stationary ring mechanism comprises a stationary ring seat; the static ring seat is of an annular structure and is sleeved at one end of the shaft sleeve; the outer wall of the static ring seat is fixedly connected with the inner wall of the main pump shell; a stationary ring assembly is fixedly connected to one side of the stationary ring seat;
the moving ring mechanism comprises a locking assembly; the locking component is arranged at the other end of the shaft sleeve; the side surface of the locking component is fixedly connected with a movable ring seat; a movable ring assembly is arranged on one side, close to the static ring assembly, of the movable ring seat;
the movable ring assembly comprises a movable ring groove; the movable ring groove is formed in the inner wall of the movable ring seat; the groove wall of the movable ring groove is circumferentially arrayed around the center of the movable ring groove with a plurality of first elastic pieces; one end of the first elastic piece is fixedly connected with the groove wall at one side of the movable ring groove; the other end of the first elastic piece is fixedly connected with an abutting ring; one side of the abutting ring is provided with a plurality of abutting columns around the center of the abutting ring in a circumferential array; the groove wall at the other side of the movable ring groove is opened and provided with a positioning ring; an annular groove is formed in the annular wall on one side of the positioning ring; the bottom of the annular groove is provided with a plurality of positioning holes matched with the abutting columns; a movable ring is arranged on one side of the abutting column; the inner wall and the outer wall of the movable ring are in sliding connection with the groove wall of the annular groove.
Preferably, the static ring seat is fixedly connected with the inner wall of the main pump shell, so that the static state of the static ring seat is ensured, the existence of gaps is eliminated, and the possibility that the medium leaks along the static ring seat and the inner wall of the main pump shell is thoroughly eliminated.
Preferably, a plurality of elastic components are arranged to act on the abutting ring together, so that the situation that the abutting ring is inclined due to the fact that a single spring locally applies force to the abutting ring is avoided, and finally, the condition that the moving ring is inclined to cause medium leakage is avoided; the locating ring that sets up can not only play auxiliary moving ring location's effect, can also play secondary seal's effect, prevents that the medium from revealing from whole moving ring assembly and shaft sleeve junction.
The stationary ring assembly includes an elastomeric pad; a static ring groove is formed in one side, close to the movable ring assembly, of the inner wall of the static ring seat; one side of the elastic pad is fixedly connected with the wall of the static ring groove; the other side of the elastic pad is fixedly connected with a static ring; the end face of the stationary ring is in abutting connection with the end face of the movable ring.
Preferably, the elastic pad can prevent the medium from leaking from the connection part of the stationary ring and the stationary ring groove, and can also enable the stationary ring to have a thrust facing the movable ring, so that the contact surface of the movable ring and the stationary ring can always keep rotary fit when the rotating shaft is subjected to circumferential displacement.
The locking assembly comprises a locking ring; the locking ring is sleeved on the shaft sleeve; a plurality of bolts are fixedly connected to the outer wall of the locking ring at equal intervals in the circumferential direction; one end of the bolt sequentially penetrates through the locking ring and the shaft sleeve and is fixedly connected with the rotating shaft; the side surface of the locking ring is fixedly connected with the movable ring seat.
Preferably, the locking ring is fixed on the rotating shaft through bolts, so that the rotating ring assembly can be driven to rotate, the shaft sleeve can be tightly fixed with the rotating shaft, and the shaft sleeve is prevented from slipping on the rotating shaft.
And a first O-shaped sealing ring is arranged between the inner wall of the positioning ring and the shaft sleeve.
Preferably, a first O-ring is provided to prevent leakage of the medium from the connection of the hub and the retaining ring.
An annular sealing gasket is sleeved outside the abutting column; one side of the annular sealing gasket is fixedly connected with the side wall of the abutting ring; the other side of the annular sealing gasket is fixedly connected with the side face of the positioning ring.
Preferably, the annular sealing gasket not only plays a role in abutting connection between the auxiliary moving ring and the static ring, but also can prevent the medium from leaking from the positioning hole.
The side surface of the elastic pad is provided with a plurality of damping through holes.
Preferably, the shock absorbing through holes are provided to enhance the deformability of the elastic pad.
The first elastic piece comprises a positioning column and a positioning cylinder; one end of the positioning column is fixedly connected with the wall of the movable ring groove; a sliding hole matched with the positioning column is formed in one side of the positioning cylinder; the other end of the positioning column is in sliding connection with the inner wall of the sliding connection hole; a connecting plate is fixedly connected to the other side of the positioning cylinder; the side surface of the connecting plate is fixedly connected with the abutting ring; and the positioning column and the positioning cylinder are sleeved with an abutting spring.
Preferably, the positioning column and the positioning cylinder are matched with each other, so that stable displacement of the connecting plate can be realized, and the inclination of the connecting plate is prevented.
The inner wall of the movable ring seat is provided with an annular groove; a second O-shaped sealing ring is arranged in the annular groove; the second O-shaped sealing ring is in abutting connection with the groove wall of the annular groove and the shaft sleeve respectively.
Preferably, the arrangement of the second O-shaped sealing ring improves the tightness between the movable ring seat and the shaft sleeve.
The invention discloses the following technical effects: the plurality of elastic components are arranged to act on the abutting ring together, so that the situation that the abutting ring is inclined due to the fact that a single spring locally exerts force on the abutting ring and finally the medium leaks due to the fact that the moving ring is inclined is avoided; the locating ring not only can play a role in assisting the locating of the moving ring, but also can play a role in secondary sealing, and leakage of media from the joint of the whole moving ring assembly and the shaft sleeve is prevented. The elastic pad can prevent leakage of the medium from the connection part of the static ring and the static ring groove, and can enable the static ring to have thrust facing the dynamic ring, so that when the rotating shaft is subjected to circumferential displacement, the contact surface of the dynamic ring and the static ring can be kept in rotary fit all the time. The locking ring is fixed on the rotating shaft through bolts, so that the rotating ring assembly can be driven to rotate, the shaft sleeve and the rotating shaft can be tightly fixed, and the shaft sleeve is prevented from slipping on the rotating shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the moving ring seat of the present invention.
FIG. 3 is a schematic view of the positioning ring of the present invention.
FIG. 4 is a schematic structural view of an elastic pad according to the present invention.
Fig. 5 is a partial enlarged view of A1.
Fig. 6 is a partial enlarged view of A2.
The device comprises a 1-main pump shell, a 2-rotating shaft, a 3-shaft sleeve, a 4-static ring seat, a 5-dynamic ring seat, a 6-dynamic ring groove, a 7-abutting ring, an 8-abutting column, a 9-positioning ring, a 10-annular groove, an 11-dynamic ring, a 12-elastic pad, a 13-static ring, a 14-locking ring, a 15-bolt, a 16-first O-shaped sealing ring, a 17-annular sealing pad, a 18-positioning column, a 19-positioning cylinder, a 20-connecting plate, a 21-abutting spring, a 22-second O-shaped sealing ring, a 23-auxiliary groove and a 24-auxiliary spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a sealing component for a main pump of a nuclear power station, which comprises the following components: a main pump housing 1; a rotating shaft 2 is arranged in the main pump shell 1; the shaft sleeve 3 is sleeved outside the rotating shaft 2; a stationary ring mechanism is fixedly connected to one side of the inner cavity of the main pump shell 1; the static ring mechanism is in abutting connection with the movable ring mechanism;
the stationary ring mechanism comprises a stationary ring seat 4; the static ring seat 4 is of an annular structure and is sleeved at one end of the shaft sleeve 2; the outer wall of the stationary ring seat 4 is fixedly connected with the inner wall of the main pump shell 1; a stationary ring component is fixedly connected to one side of the stationary ring seat 4;
the moving ring mechanism comprises a locking assembly; the locking component is arranged at the other end of the shaft sleeve 2; the side surface of the locking component is fixedly connected with a movable ring seat 5; a movable ring assembly is arranged on one side, close to the static ring assembly, of the movable ring seat 5;
the movable ring assembly comprises a movable ring groove 6; the movable ring groove 6 is formed in the inner wall of the movable ring seat 5; the groove wall of the movable ring groove 6 is circumferentially arrayed around the center of the movable ring groove 6 with a plurality of first elastic pieces; one end of the first elastic piece is fixedly connected with the groove wall at one side of the movable ring groove 6; the other end of the first elastic piece is fixedly connected with an abutting ring 7; one side of the abutting ring 7 is provided with a plurality of abutting columns 8 which are arrayed circumferentially around the center of the abutting ring 7; the groove wall at the other side of the movable ring groove 6 is arranged in an open mode and is provided with a positioning ring 9; an annular groove 10 is formed in the annular wall on one side of the positioning ring 9; the bottom of the annular groove 10 is provided with a plurality of positioning holes matched with the abutting columns 8; a movable ring 11 is arranged on one side of the abutting column 8; the inner wall and the outer wall of the movable ring 11 are in sliding connection with the groove wall of the annular groove 10.
The stationary ring assembly includes an elastomeric pad 12; a static ring groove is formed in one side, close to the movable ring assembly, of the inner wall of the static ring seat 4; one side of the elastic pad 12 is fixedly connected with the wall of the static ring groove; the other side of the elastic pad 12 is fixedly connected with a static ring 13; the end face of the stationary ring 13 is in abutting connection with the end face of the movable ring 11.
The locking assembly includes a locking ring 14; the locking ring 14 is sleeved on the shaft sleeve 3; a plurality of bolts 15 are fixedly connected to the outer wall of the locking ring 14 at equal intervals in the circumferential direction; one end of the bolt 15 sequentially penetrates through the locking ring 14 and the shaft sleeve 3 and is fixedly connected with the rotating shaft 2; the side surface of the locking ring 14 is fixedly connected with the movable ring 11 seat.
A first O-ring 16 is arranged between the inner wall of the positioning ring 9 and the shaft sleeve 3.
An annular sealing gasket 17 is sleeved outside the abutting column 8; one side of the annular sealing gasket 17 is fixedly connected with the side wall of the abutting ring 8; the other side of the annular sealing gasket 17 is fixedly connected with the side face of the positioning ring 9.
The side surface of the elastic pad 12 is provided with a plurality of damping through holes.
The first elastic piece comprises a positioning column 18 and a positioning cylinder 19; one end of the positioning column 18 is fixedly connected with the wall of the movable ring groove 6; a sliding hole matched with the positioning column 18 is formed in one side of the positioning cylinder 19; the other end of the positioning column 18 is in sliding connection with the inner wall of the sliding connection hole; a connecting plate 20 is fixedly connected to the other side of the positioning cylinder 19; the side surface of the connecting plate 20 is fixedly connected with the abutting ring 7; the positioning column 18 and the positioning cylinder 19 are sleeved with an abutting spring 21.
An annular groove is formed in the inner wall of the movable ring seat 5; a second O-shaped sealing ring 22 is arranged in the annular groove; the second O-ring 22 is in abutting connection with the groove wall of the annular groove and the sleeve 3, respectively.
In one embodiment of the present invention, one side of the moving ring 11 abuts against the side of the stationary ring 13; the other side of the movable ring 11 is provided with a plurality of auxiliary grooves 23 which are matched with the abutting columns 8; the peripheral wall of the abutting column 8 is in sliding connection with the wall of the auxiliary groove 23; an auxiliary spring 24 is arranged in the auxiliary groove 23; one end of the auxiliary spring 24 is fixedly connected with the bottom of the auxiliary groove 23; the other end of the auxiliary spring 24 is fixedly connected with the end face of the abutting column 8; the auxiliary spring 24 can enhance the capability of the moving ring 11 following the circumferential movement of the rotating shaft 2, so that the moving ring 11 and the stationary ring 13 are always kept in an abutting state.
In another embodiment of the invention, the wall of the movable ring groove 6 is arranged in a polygonal shape; the outer wall of the positioning ring 9 is arranged into a polygon which is matched with the groove wall of the movable ring groove 6; the polygon setting can avoid the holding ring 9 relies on reference column 18 and a positioning section of thick bamboo 19 to rotate when rotating, makes the holding ring follow the rotating ring seat 5 and rotates, has avoided the relative rotation between holding ring 9 and the axle sleeve 3, prevents that the medium from revealing between holding ring 9 and the axle sleeve 3.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. A seal assembly for a nuclear power plant main pump, comprising: a main pump housing (1); a rotating shaft (2) is arranged in the main pump shell (1); the shaft sleeve (3) is sleeved outside the rotating shaft (2); a static ring mechanism is fixedly connected to one side of the inner cavity of the main pump shell (1); the static ring mechanism is in abutting connection with the movable ring mechanism;
the stationary ring mechanism comprises a stationary ring seat (4); the static ring seat (4) is of an annular structure and is sleeved at one end of the shaft sleeve (3); the outer wall of the stationary ring seat (4) is fixedly connected with the inner wall of the main pump shell (1); a stationary ring assembly is fixedly connected to one side of the stationary ring seat (4);
the moving ring mechanism comprises a locking assembly; the locking component is arranged at the other end of the shaft sleeve (3); the side surface of the locking component is fixedly connected with a movable ring seat (5); a movable ring assembly is arranged on one side, close to the static ring assembly, of the movable ring seat (5);
the movable ring assembly comprises a movable ring groove (6); the movable ring groove (6) is formed in the inner wall of the movable ring seat (5); the groove wall of the movable ring groove (6) is circumferentially arrayed around the center of the movable ring groove (6) with a plurality of first elastic pieces; one end of the first elastic piece is fixedly connected with the groove wall at one side of the movable ring groove (6); the other end of the first elastic piece is fixedly connected with an abutting ring (7); one side of the abutting ring (7) is provided with a plurality of abutting columns (8) which are arrayed around the center circumference of the abutting ring (7); the groove wall at the other side of the movable ring groove (6) is arranged in an open mode and is provided with a positioning ring (9); an annular groove (10) is formed in the annular wall at one side of the positioning ring (9); a plurality of positioning holes matched with the abutting columns (8) are formed in the bottom of the annular groove (10); a movable ring (11) is arranged on one side of the abutting column (8); the inner wall and the outer wall of the movable ring (11) are in sliding connection with the groove wall of the annular groove (10);
the stationary ring assembly includes a resilient pad (12); a static ring groove is formed in one side, close to the movable ring assembly, of the inner wall of the static ring seat (4); one side of the elastic pad (12) is fixedly connected with the wall of the static ring groove; the other side of the elastic pad (12) is fixedly connected with a static ring (13); the end face of the stationary ring (13) is in abutting connection with the end face of the movable ring (11);
the locking assembly includes a locking ring (14); the locking ring (14) is sleeved on the shaft sleeve (3); a plurality of bolts (15) are fixedly connected to the outer wall of the locking ring (14) at equal intervals in the circumferential direction; one end of the bolt (15) sequentially penetrates through the locking ring (14) and the shaft sleeve (3) and is fixedly connected with the rotating shaft (2); the side surface of the locking ring (14) is fixedly connected with the movable ring (11) seat;
the side surface of the elastic pad (12) is provided with a plurality of damping through holes;
the first elastic piece comprises a positioning column (18) and a positioning cylinder (19); one end of the positioning column (18) is fixedly connected with the groove wall of the movable ring groove (6); a sliding hole matched with the positioning column (18) is formed in one side of the positioning cylinder (19); the other end of the positioning column (18) is in sliding connection with the inner wall of the sliding connecting hole; a connecting plate (20) is fixedly connected to the other side of the positioning cylinder (19); the side surface of the connecting plate (20) is fixedly connected with the abutting ring (7); the positioning column (18) and the positioning cylinder (19) are sleeved with an abutting spring (21).
2. The seal assembly for a nuclear power plant main pump of claim 1, wherein: a first O-shaped sealing ring (16) is arranged between the inner wall of the positioning ring (9) and the shaft sleeve (3).
3. The seal assembly for a nuclear power plant main pump of claim 1, wherein: an annular sealing gasket (17) is sleeved outside the abutting column (8); one side of the annular sealing gasket (17) is fixedly connected with the side wall of the abutting ring (7); the other side of the annular sealing gasket (17) is fixedly connected with the side face of the positioning ring (9).
4. The seal assembly for a nuclear power plant main pump of claim 1, wherein: an annular groove is formed in the inner wall of the movable ring seat (5); a second O-shaped sealing ring (22) is arranged in the annular groove; the second O-shaped sealing ring (22) is in abutting connection with the groove wall of the annular groove and the shaft sleeve (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110393871.4A CN113028066B (en) | 2021-04-13 | 2021-04-13 | Sealing assembly for main pump of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110393871.4A CN113028066B (en) | 2021-04-13 | 2021-04-13 | Sealing assembly for main pump of nuclear power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113028066A CN113028066A (en) | 2021-06-25 |
| CN113028066B true CN113028066B (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110393871.4A Active CN113028066B (en) | 2021-04-13 | 2021-04-13 | Sealing assembly for main pump of nuclear power station |
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| CN (1) | CN113028066B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117780624B (en) * | 2024-02-26 | 2024-05-14 | 大庆文迪石油设备有限公司 | Adjustable mechanical seal structure for pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015211223B3 (en) * | 2015-06-18 | 2016-07-21 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal with release lock |
| CN107061745A (en) * | 2017-05-24 | 2017-08-18 | 贵州大学 | A kind of Hydrodynamic transmission axial seal |
| CN107401616A (en) * | 2017-07-28 | 2017-11-28 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
| CN108533755A (en) * | 2018-07-10 | 2018-09-14 | 拉法泵业科技（宁波）有限公司 | A kind of conventional mechanical sealing |
| CN110030383A (en) * | 2019-04-10 | 2019-07-19 | 艾志（南京）环保管接技术股份有限公司 | The interior liquid mechanical seal with axial floating pallet set |
| CN112178195A (en) * | 2020-10-09 | 2021-01-05 | 帕尔巴特机械(苏州)有限公司 | Container axial double-end-face split mechanical seal |
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| Publication number | Publication date |
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| CN113028066A (en) | 2021-06-25 |
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