CN108105145A - Nuclear power plant reactor cooling agent mechanical sealing device used for pump - Google Patents
Nuclear power plant reactor cooling agent mechanical sealing device used for pump Download PDFInfo
- Publication number
- CN108105145A CN108105145A CN201611056739.XA CN201611056739A CN108105145A CN 108105145 A CN108105145 A CN 108105145A CN 201611056739 A CN201611056739 A CN 201611056739A CN 108105145 A CN108105145 A CN 108105145A
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- Prior art keywords
- ring
- nuclear power
- power plant
- sealing device
- cooling agent
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention provides a kind of nuclear power plant reactor cooling agent mechanical sealing device used for pump, it is pressed by the identical mechanical seal series connection dress of tertiary structure, mechanical seal includes seal assembly, axle sleeve, cavity and spring base, seal assembly includes rotating ring, stationary ring, the rotating seat being connected with rotating ring, the stationary seat being connected with stationary ring, rotating ring snap ring and stationary ring snap ring, wherein, the lateral surface of rotating ring snap ring is equipped with spiral pump efficiency structure.Present invention improves the mobility status of medium near seal assembly, it is excessive to avoid seal assembly heating, reduces the abrasion of seal face, extends service life.
Description
Technical field
The invention belongs to technical field of nuclear power, it is more particularly related to a kind of nuclear power plant reactor coolant pump
Use mechanically-sealing apparatus.
Background technology
Reactor coolant pump is the equipment uniquely continuously run in one loop of nuclear power station main system, is the heart of nuclear power station
Dirty, in order to ensure the safety and environmental issue of nuclear power station, reactor coolant pump should meet leakage rate minimum, operating reliability
Highest demand.
Reactor coolant pump hydrodynamic three-stage mechanical seal device is core the most in reactor coolant pump structure
Important component, can direct relation core main pump safe and reliable run in nuclear power station.It, will if sealing leaks
Reactor shutdown is directly resulted in, huge economic loss is brought to nuclear power station, can also environmental radiation be caused to pollute when serious.In recent years
With greatly developing for nuclear power technology, the correlation technique of a large amount of nuclear power generating equipments is all gradually ripe, and main pump and its axle envelope are still deposited
In some insoluble problems, it has also become the bottleneck of nuclear power technology development.
Current existing reactor coolant pump hydrodynamic three-stage mechanical seal device is by the identical machinery of tertiary structure
Sealing series connection dress is pressed, and seal assembly is mounted on axle sleeve in mechanical seal, and cavity is mounted on outside seal assembly and by bullet
Spring abutment compresses, and the axle sleeve of adjacent machine sealing is connected with each other, and clamp hub form by both ends passes to axle envelope by Motor torque,
Four flow controller step pressure reducings will be passed through from the high-pressure injected water for above filling pump.
It refer to shown in Fig. 1, existing seal assembly includes rotating ring 101, rotating ring inside support ring 102 and rotating ring outer support ring
103rd, stationary ring 104, stationary ring outer support ring 105, rotating ring snap ring 106, rotating seat 107, stationary ring snap ring 108 and stationary seat 109,
In, the lateral surface of rotating ring snap ring 106 is smooth surfaces, and such structure can cause mechanical seal in normal work, sealing group
Nearby narrow space media flow is not smooth for part, therefore is unfavorable for seal assembly cooling and heat dissipation, and seal assembly temperature rises larger, influence
The Performance And Reliability of mechanical seal.
It refer to shown in Fig. 2, wherein, axle sleeve 40 and shaft coupling 50 are attached by way of directly clamping, but
The mechanical seal of this kind of drive can not be applied to different types of main reactor pump, it is therefore desirable to further to be improved.
In addition this mechanical seal can have a small amount of leakage in the case where applying hydrostatic pressure condition；, when reactor stops in reactor coolant pump
Machine and when rotor does not turn, it is necessary to be sealed by external certain nitrogen, the anti-leak of reactor coolant is to pass through movement
O-ring between ring and stop seal ring 80 realizes, therefore in parking, it is necessary to using stop seal ring 80, this just increases
Add the complexity of device entirety, reduce operational reliability.
Larger axial force is generated when the structure of axle envelope can be such that medium acts in axle envelope at present, increases bearing load, shadow
The performance of main pump is rung, and seal ring seat is also subjected to larger support reaction in itself, and seal ring seat is caused to generate moderate finite deformation, influences
Sealing performance.In normal operation, cooling water temperature is relatively low, when medium temperature rise, the axle sleeve of mechanical seals at different levels and
Cavity can generate larger thermal expansion, and the axial position of mechanical seal is made to change, and positioning can be lost by being sealed when serious, be caused
Seal failure.
In view of this, a kind of there is good seal performance and it be applicable to the core of differential responses heap main pump it is necessory to provide
Power station reactor coolant pump mechanically-sealing apparatus.
The content of the invention
The goal of the invention of the present invention is：There is provided one kind has good seal performance and is applicable to differential responses heap main pump
Nuclear power plant reactor cooling agent mechanical sealing device used for pump.
In order to realize foregoing invention purpose, the present invention provides a kind of nuclear power plant reactor cooling agent mechanical seal for pump dresses
Put, by tertiary structure it is identical mechanical seal series connection dress press, the mechanical seal include seal assembly, axle sleeve, cavity and
Spring base, the seal assembly include rotating ring, stationary ring, the rotating seat being connected with rotating ring, the stationary seat being connected with stationary ring, rotating ring card
Ring and stationary ring snap ring, wherein, the lateral surface of the rotating ring snap ring is equipped with spiral pump efficiency structure.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the rotating ring and rotating ring
The end face of seat fitting is high precision plane.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the stationary ring and rotating ring
The sealing surface of fitting is equipped with waviness shallow slot structure.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the rotating ring it is inside and outside
Side is respectively equipped with rotating ring inside support ring and rotating ring outer support ring, and the outside of the stationary ring is equipped with stationary ring outer support ring.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the rotating ring is graphite
Ring, the rotating ring inside support ring and rotating ring outer support ring are becket.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the stationary ring is hard
Alloy hoop, the stationary ring outer support ring are becket.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the rotating seat and quiet
The sliding diameter of ring seat is identical.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, in the mechanical seal
Seal assembly is mounted on axle sleeve, and cavity is mounted on outside seal assembly and is compressed by spring base, and adjacent machine sealing passes through axis
Set is attached.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the first order machinery
In sealing a butterfly spring is respectively equipped on first order axle sleeve and first order cavity.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the second level machinery
Sealing further includes the reducing pressure by regulating flow device on the cavity of the second level.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the reducing pressure by regulating flow dress
It puts water injection pressure according to 1:1:1 carries out classification decompression, and three-stage mechanical seal is made to bear identical pressure difference.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the third level machinery
Sealing further includes the gland that is pressed onto on third level spring base of dress and one end be connected with third level axle sleeve, the other end and shaft coupling company
The fourth stage axle sleeve connect.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, the fourth stage axle sleeve
It is rigidly connected with shaft coupling using screw, the screw is equipped with check washer.
As a kind of improvement of nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, four axle sleeve phases
Consolidated between mutually by groove and lug matching connection, the second level axle sleeve with first order axle sleeve junction by connection ring
It is fixed.
Compared with the prior art, nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention has below beneficial to skill
Art effect：
1) the hydrodynamic effect generated using rotating ring and stationary ring forms stable liquid film so that seal assembly end face is fluid
Lubricating status, improve seal assembly nearby medium mobility status, avoid seal assembly heating it is excessive, reduce sealed end
The abrasion in face, extends service life；
2) stationary seat and rotating seat reduce the axial force that medium acts on axle envelope using identical sliding diameter；
3) solve the problems, such as that axle envelope is directly connected to transmission with different types of main reactor pump, without parking
Seal assembly reduces the complexity of sealing device entirety, and can guarantee No leakage when stopping operating mode；
4) axial float of axle sleeve and cavity caused by thermal expansion can be effectively compensated for by increasing butterfly spring；
5) classification of reducing pressure by regulating flow device reduces the pressure that single-stage mechanical seal is born, and adds main pump axle envelope
The reliability of longtime running extends the service life of gland seal assembly.
Description of the drawings
With reference to the accompanying drawings and detailed description, to nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention
It is described in detail, wherein：
Fig. 1 is the structure diagram of seal assembly in the prior art.
Fig. 2 is the attachment structure schematic diagram of prior art bottom bracket axle and shaft coupling.
Fig. 3 is the structure diagram of nuclear power station reactor coolant pump mechanically-sealing apparatus in the embodiment of the present invention.
Fig. 4 is the schematic diagram of axis inner room connection structure of the embodiment of the present invention.
Fig. 5 is the structure diagram of seal assembly in the embodiment of the present invention.
Fig. 6 is the attachment structure schematic diagram of bottom bracket axle of the embodiment of the present invention and shaft coupling.
Fig. 7 is butterfly spring schematic view of the mounting position in the embodiment of the present invention.
Specific embodiment
In order to which the goal of the invention, technical solution and its technique effect that make the present invention become apparent from, below in conjunction with attached drawing and tool
Body embodiment, the present invention will be described in further detail.It should be appreciated that the specific embodiment party described in this specification
Formula is not intended to limit the present invention just for the sake of explaining the present invention.
Dynamic pressure axle envelope mechanical sealing assembly is the critical component of main pump, it is contemplated that safety and reliability, present invention design
For thtee-stage shiplock structure, single-stage mechanical seal is designed by RCP system total heads are born, when certain level-one mechanical seal is failed,
Also it can guarantee sealing performance.
The present invention provides a kind of nuclear power plant reactor cooling agent mechanical sealing device used for pump, by the identical machine of tertiary structure
Tool sealing series connection dress is pressed, and mechanical seal includes seal assembly, axle sleeve, cavity and spring base, and seal assembly includes rotating ring, quiet
Ring, the rotating seat being connected with rotating ring, the stationary seat being connected with stationary ring, rotating ring snap ring and stationary ring snap ring, wherein, outside rotating ring snap ring
Side is equipped with spiral pump efficiency structure.
It refer to shown in Fig. 3 and Fig. 4, nuclear power plant reactor cooling agent mechanical sealing device used for pump of the present invention, by three-level
The identical mechanical seal series connection dress of structure is pressed, and first order seal assembly 10 is mounted on first order axle sleeve 12, first order chamber
Body 14 is mounted on 10 outside of first order seal assembly and is compressed by first order spring base 16, and first order axle sleeve 12 is equipped with lug
18, second level axle sleeve 22 is equipped with groove 28, the groove 28 on second level axle sleeve 22 by with the lug on first order axle sleeve 12
18 engagement sleeves loads connect and pass through connection ring 70 and are fixed；First order seal assembly 10, second level seal assembly 20 and the 3rd
The structure of grade seal assembly 30 is identical；
Second level seal assembly 20 is mounted on second level axle sleeve 22, and second level cavity 24 is mounted on second level seal assembly
20 outsides are simultaneously compressed by second level spring base 26, and four reducing pressure by regulating flow devices 90 are mounted on the cavity of the second level, third level axle sleeve
32 groove 28 matches connection with the lug 18 on second level axle sleeve 22, and third level seal assembly 30 is mounted on third level axle sleeve 32
On, third level cavity 34 is mounted on 30 outside of third level seal assembly and is compressed by third level spring base 36, fourth stage axle sleeve 40
Groove 28 match connection with the lug 18 on third level axle sleeve 32, the dress of gland 42 is pressed onto on third level spring base 36.
It refer to shown in Fig. 5, the knot of first order seal assembly 10, second level seal assembly 20 and third level seal assembly 30
Structure is identical, including rotating ring 101, rotating ring inside support ring 102, rotating ring outer support ring 103, stationary ring 104, stationary ring outer support ring 105, dynamic
Ring snap ring 106, rotating seat 107, stationary ring snap ring 108 and stationary seat 109, rotating ring 101 are bonded with stationary ring 104, stationary ring 104 and rotating ring
101 are connected respectively with stationary seat 109 and rotating seat 107, and rotating ring inside support ring 102 and rotating ring outer support ring 103 are installed in respectively
The interior outside of rotating ring 101 is used to carry out rotating ring 101 strength support, and the outside that stationary ring outer support ring 105 is installed in stationary ring 104 is used
In carrying out strength support to stationary ring 104, rotating ring snap ring 106 is mounted on the outside of rotating ring outer support ring 103 and rotating seat 107, quiet
Ring snap ring 108 is mounted on the outside of stationary ring outer support ring 105 and stationary seat 109, has spiral on the lateral surface of rotating ring snap ring 106
Pump efficiency structure 110.Increase spiral pump efficiency structure 110 in 106 outside of rotating ring snap ring, to improve media flow near seal assembly
Situation, so as to reduce the temperature of seal assembly, so as to ensure the sealing performance and reliability of structure entirety.
The end face that rotating ring 101 is bonded with rotating seat 107 is high precision plane.At ensureing mechanical seal when small―gap suture is run
In fluid sliding mode, the service life of mechanical seal ensure that.
The sealing surface that stationary ring 104 is bonded with rotating ring 101 is equipped with waviness shallow slot structure.Waviness shallow slot structure is operated in main pump
When can generate hydrodynamic, rotating ring 101 and stationary ring 104 are separated, avoid contact with friction, improves bearing capacity, reduces caloric value,
Increase sealing operation stability.
Rotating ring 101 is graphite annulus, and the rotating ring inside support ring 102 and rotating ring outer support ring 103 of Internal and external cycle insert are becket.
Stationary ring 104 is carbide ring, and the stationary ring outer support ring 105 of outer ring insert is becket.Using the form of insert becket, by force
Change the mechanical property of rotating ring 101 and stationary ring 104, improve its mechanical performance.
Rotating seat 107 is identical with the sliding diameter of stationary seat 109.Rotating seat 107 and stationary seat 109 are slid to the ruler of diameter
It is very little to be designed to unanimously so that mechanical seals at different levels are issued to self-balancing in pressure-bearing condition, while reduce medium and generated at sealing
Axial force.
It refer to shown in Fig. 6, fourth stage axle sleeve 40 is rigidly connected with shaft coupling 50 using screw 60, each screw 60
On be equipped with check washer 602.Such structure can ensure that axle envelope is directly connected to different types of main reactor pump, without adopting
With stop seal component, the complexity of sealing device entirety is reduced, and No leakage, axis at different levels are can guarantee when stopping operating mode
Inner room has the reliable drive mechanism that lug 18 and groove 28 coordinate, and can directly be replaced in the case where overall structure does not change
Nuclear reactor main pump hydrostatic seal.
It refer to shown in Fig. 7, add a butterfly spring 122 on first order axle sleeve 12 and first order cavity 14 respectively, this
Sample can effectively compensate the mechanical seal axial direction change in location caused by temperature raises, and the work for making axle envelope is more reliable.
Throttling sealing device 90 is by axle envelope water injection pressure according to 1:1:1 carries out classification decompression, bears three-stage mechanical seal
Identical pressure difference.The classification of reducing pressure by regulating flow device 90 reduces the pressure that single-stage mechanical seal is born, and adds main pump
The reliability of axle envelope longtime running extends the service life of dynamic pressure gland seal assembly.
During main pump normal operation, the axle envelope that temperature is 55 DEG C injects water to be higher than the absolute pressure 15.8MPa's of RCP systems
Pressure enters in main pump, and flow is about 1800L/h, and the injection water of about 1200L/h flows downward, and enters after cooling down journal bearing
In RCP systems, prevent primary Ioops cooling agent from entering pump shaft and axle envelope area, the injection water of about 600L/h is filled by reducing pressure by regulating flow in parallel
It puts a point two-way and enters second level mechanical seal and third level mechanical seal, be about 300L/h per injection water all the way, take away part
The heat that end face rubs and stirring generates；Cool down the about 600L/h injection water of second level mechanical seal and third level grade mechanical seal
RCV systems are returned after throttling dropping equipment enters high-pressure leakage pipeline；The injection water of about 20L/h flows through first order mechanical seal
With the seal assembly end face of second level mechanical seal, take away after partial heat after reducing pressure by regulating flow device enters high-pressure leakage pipeline
Return to RCV systems；The injection water of about 20L/h flows through third level seal assembly end face, enters low-pressure leak after taking away partial heat
Pipeline returns to RPE systems.
It can be seen that with reference to more than detailed description of the present invention compared with the prior art, the present invention at least has following
Advantageous effects：
1) the hydrodynamic effect generated using rotating ring and stationary ring forms stable liquid film so that seal assembly end face is fluid
Lubricating status, improve seal assembly nearby medium mobility status, avoid seal assembly heating it is excessive, reduce sealed end
The abrasion in face, extends service life；
2) stationary seat and rotating seat reduce the axial force that medium acts on axle envelope using identical sliding diameter；
3) solve the problems, such as that axle envelope is directly connected to transmission with different types of main reactor pump, without parking
Seal assembly reduces the complexity of sealing device entirety, and can guarantee No leakage when stopping operating mode；
4) axial float of axle sleeve and cavity caused by thermal expansion can be effectively compensated for by increasing butterfly spring；
5) classification of reducing pressure by regulating flow device reduces the pressure that single-stage mechanical seal is born, and adds main pump axle envelope
The reliability of longtime running extends the service life of gland seal assembly.
According to above-mentioned principle, the present invention can also carry out the above embodiment appropriate change and modification.Therefore, this hair
It is bright to be not limited to specific embodiment disclosed and described above, some modifications and changes of the present invention should also be as to fall into this
In the scope of the claims of invention.In addition, although some specific terms, these terms are used in this specification
Merely for convenience of description, do not limit the present invention in any way.
Claims (14)
1. a kind of nuclear power plant reactor cooling agent mechanical sealing device used for pump, by the identical mechanical seal series connection dress pressure of tertiary structure
Form, the mechanical seal include seal assembly, axle sleeve, cavity and spring base, the seal assembly include rotating ring, stationary ring, with
The rotating seat of rotating ring connection, stationary seat, rotating ring snap ring and the stationary ring snap ring being connected with stationary ring, it is characterised in that：The rotating ring card
The lateral surface of ring is equipped with spiral pump efficiency structure.
2. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described dynamic
The end face that ring is bonded with rotating seat is high precision plane.
3. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described quiet
The sealing surface that ring is bonded with rotating ring is equipped with waviness shallow slot structure.
4. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described dynamic
The interior outside of ring is respectively equipped with rotating ring inside support ring and rotating ring outer support ring, and the outside of the stationary ring is equipped with stationary ring outer support ring.
5. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 4, it is characterised in that：It is described dynamic
Ring is graphite annulus, and the rotating ring inside support ring and rotating ring outer support ring are becket.
6. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 4, it is characterised in that：It is described quiet
Ring is carbide ring, and the stationary ring outer support ring is becket.
7. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described dynamic
Ring seat is identical with the sliding diameter of stationary seat.
8. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：The machine
Seal assembly is mounted on axle sleeve in tool sealing, and cavity is mounted on outside seal assembly and is compressed by spring base, and adjacent machine is close
Envelope is attached by axle sleeve.
9. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：Described
In level-one mechanical seal a butterfly spring is respectively equipped on first order axle sleeve and first order cavity.
10. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described
Second level mechanical seal further includes the reducing pressure by regulating flow device on the cavity of the second level.
11. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 10, it is characterised in that：It is described
Reducing pressure by regulating flow device is by water injection pressure according to 1:1:1 carries out classification decompression, and three-stage mechanical seal is made to bear identical pressure difference.
12. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 1, it is characterised in that：It is described
Third level mechanical seal further includes the gland that is pressed onto on third level spring base of dress and one end is connected with third level axle sleeve, the other end
The fourth stage axle sleeve being connected with shaft coupling.
13. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 12, it is characterised in that：It is described
Fourth stage axle sleeve is rigidly connected with shaft coupling using screw, and the screw is equipped with check washer.
14. nuclear power plant reactor cooling agent mechanical sealing device used for pump according to claim 12, it is characterised in that：It is described
For four axle sleeves between each other by groove and lug matching connection, the second level axle sleeve passes through company with first order axle sleeve junction
Ring is connect to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056739.XA CN108105145A (en) | 2016-11-25 | 2016-11-25 | Nuclear power plant reactor cooling agent mechanical sealing device used for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056739.XA CN108105145A (en) | 2016-11-25 | 2016-11-25 | Nuclear power plant reactor cooling agent mechanical sealing device used for pump |
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| Publication Number | Publication Date |
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| CN108105145A true CN108105145A (en) | 2018-06-01 |
Family
ID=62204478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611056739.XA Pending CN108105145A (en) | 2016-11-25 | 2016-11-25 | Nuclear power plant reactor cooling agent mechanical sealing device used for pump |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706404A (en) * | 2020-05-12 | 2020-09-25 | 中国核动力研究设计院 | Supercritical carbon dioxide dry gas sealing device with spiral cooling structure and method |
| CN111810644A (en) * | 2020-07-31 | 2020-10-23 | 中核核电运行管理有限公司 | Follow-up sealing structure of hydrodynamic pressure type main pump mechanical seal of nuclear power station |
| CN111911632A (en) * | 2020-07-31 | 2020-11-10 | 中核核电运行管理有限公司 | Sealing assembly of nuclear power station hydrodynamic pressure type main pump mechanical seal |
| CN111980960A (en) * | 2020-07-31 | 2020-11-24 | 中核核电运行管理有限公司 | Water seal device for hydrodynamic pressure type main pump mechanical seal of nuclear power station |
| CN112096873A (en) * | 2020-07-31 | 2020-12-18 | 中核核电运行管理有限公司 | Floating sealing device for mechanical seal of hydrodynamic main pump of nuclear power station |
| CN112525514A (en) * | 2020-12-03 | 2021-03-19 | 中广核工程有限公司 | Secondary seal life verification testing machine for nuclear main pump shaft seal |
| CN113441084A (en) * | 2021-06-30 | 2021-09-28 | 高道密封科技(苏州)有限公司 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
| CN114526258A (en) * | 2022-01-21 | 2022-05-24 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
| CN114576195A (en) * | 2022-04-28 | 2022-06-03 | 中密控股股份有限公司 | Novel compensation seal assembly for secondary seal of static pressure shaft seal of nuclear main pump |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706404A (en) * | 2020-05-12 | 2020-09-25 | 中国核动力研究设计院 | Supercritical carbon dioxide dry gas sealing device with spiral cooling structure and method |
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| CN111810644A (en) * | 2020-07-31 | 2020-10-23 | 中核核电运行管理有限公司 | Follow-up sealing structure of hydrodynamic pressure type main pump mechanical seal of nuclear power station |
| CN111911632A (en) * | 2020-07-31 | 2020-11-10 | 中核核电运行管理有限公司 | Sealing assembly of nuclear power station hydrodynamic pressure type main pump mechanical seal |
| CN111980960A (en) * | 2020-07-31 | 2020-11-24 | 中核核电运行管理有限公司 | Water seal device for hydrodynamic pressure type main pump mechanical seal of nuclear power station |
| CN112096873A (en) * | 2020-07-31 | 2020-12-18 | 中核核电运行管理有限公司 | Floating sealing device for mechanical seal of hydrodynamic main pump of nuclear power station |
| CN112525514A (en) * | 2020-12-03 | 2021-03-19 | 中广核工程有限公司 | Secondary seal life verification testing machine for nuclear main pump shaft seal |
| CN113441084A (en) * | 2021-06-30 | 2021-09-28 | 高道密封科技(苏州)有限公司 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
| CN114526258A (en) * | 2022-01-21 | 2022-05-24 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
| CN114526258B (en) * | 2022-01-21 | 2024-04-02 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
| CN114576195A (en) * | 2022-04-28 | 2022-06-03 | 中密控股股份有限公司 | Novel compensation seal assembly for secondary seal of static pressure shaft seal of nuclear main pump |
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Application publication date: 20180601 |