CN110410355A - A kind of shaft coupling parking sealing arrangement - Google Patents
A kind of shaft coupling parking sealing arrangement Download PDFInfo
- Publication number
- CN110410355A CN110410355A CN201910791553.6A CN201910791553A CN110410355A CN 110410355 A CN110410355 A CN 110410355A CN 201910791553 A CN201910791553 A CN 201910791553A CN 110410355 A CN110410355 A CN 110410355A
- Authority
- CN
- China
- Prior art keywords
- shaft coupling
- shell
- sealing arrangement
- sealing
- partition
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 83
- 238000010168 coupling process Methods 0.000 title claims abstract description 83
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 83
- 238000007789 sealing Methods 0.000 title claims abstract description 69
- 238000005192 partition Methods 0.000 claims abstract description 41
- 238000012856 packing Methods 0.000 claims description 23
- 150000003839 salts Chemical class 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- 239000007789 gas Substances 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- 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
- F04D29/086—Sealings especially adapted for liquid pumps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to nuclear power fuel salt pump technical fields, disclose a kind of shaft coupling parking sealing arrangement, comprising: shell covers at the outside of shaft coupling；Seal partition, it is set between the shaft coupling and the shell, the inner wall of the sealing partition and the shell is slidably and sealingly connected with, and be configured to slide into along the inner wall of the shell and be bonded with shaft coupling compression, confined space can be collectively formed with the shell and the shaft coupling in the sealing partition.The shaft coupling parking sealing arrangement and shaft coupling are integral type design structure, are mounted on shaft coupling enclosure interior, and building block quantity is few, and structure is simple, reliable for operation, are easily installed, can effectively save certain occupied space.
Description
Technical field
The present invention relates to nuclear power fuel salt pump technical field more particularly to a kind of shaft coupling parking sealing arrangements.
Background technique
The side of centralized processing is usually used in the processing of technical field of nuclear power, waste water, exhaust gas, waste material with radionuclide
Method, it is highly important that the leakage of radioactive substance is prevented in treatment process.Parking in nuclear power fuel salt pump, on shaft coupling
For sealing device as critical component, main function is the Neng Gouji when fuel salt pump group breaks down or overhauled
When radgas is effectively sealed, prevent radgas leakage cause damages to personnel and ambient enviroment.
Currently, existing shaft coupling parking sealing arrangement is usually an independent device, building block quantity is more,
Structure is complex and occupied space is larger, is not easy to install.
Summary of the invention
The purpose of the present invention is to provide a kind of shaft coupling parking sealing arrangement, which applies fires in nuclear power
In the shaft coupling for expecting salt pump, structure is simple, reliable for operation, is easily installed, can effectively save occupied space.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of shaft coupling parking sealing arrangement, comprising:
Shell covers at the outside of shaft coupling；
Partition is sealed, is set between the shaft coupling and the shell, the inner wall of the sealing partition and the shell
It is slidably and sealingly connected with, and is configured to slide into along the inner wall of the shell and be bonded with shaft coupling compression, seal partition energy
It is enough that confined space is collectively formed with the shell and the shaft coupling.
Preferably, offering stepped hole in the inner walls, annular groove, institute are provided on the step of the stepped hole
Sealing partition is stated to be located on the step of the stepped hole and surround annular gas storehouse, the annular gas storehouse and high pressure with the annular groove
Gas source is connected.
Preferably, the sealing partition includes guide ring, ring packing boss and sealed body, the sealed body lid
Set on the opening of the annular groove, the major diameter section inner wall of the sealed body and the stepped hole is slidably and sealingly connected with, described to lead
Ring packing boss described in Xiang Huanhe is located at the both sides of the face of the sealed body.
Preferably, the guide ring is set to the sealing partition close to the shell side, the guide ring and institute
The path section inner wall for stating stepped hole is slidably and sealingly connected with, and the guide ring can be slided along the path section inner wall of the stepped hole.
Preferably, the ring packing boss is set to the sealing partition close to the shaft coupling side, the ring
Shape seal boss is configured to compress with the shaft coupling and be tightly connected.
Preferably, between the guide ring and the stepped hole, between the ring packing boss and the shaft coupling,
Sealing ring is equipped between the sealed body and the stepped hole.
Preferably, the shell is equipped with air inlet, the air inlet is connected to the annular gas storehouse.
Preferably, further including elastic component, the both ends of the elastic component connect with the shell and the sealing partition respectively
It connects.
Preferably, being equipped with Simmer ring between the shaft coupling and axis.
Preferably, the shell includes first shell and second shell, the first shell and the second shell are logical
It crosses and is bolted.
Beneficial effects of the present invention:
Shaft coupling parking sealing arrangement provided by the invention, breaks down in pump group or when needing to repair, sealing every
Plate can be slided along the inner wall of shell, it is made to compress shaft coupling, and sealing partition is collectively formed with shell and shaft coupling in sealing partition
Confined space realizes the timely sealing of radgas, effectively prevent leaking for radgas.Shaft coupling stop seal dress
Setting with shaft coupling is integral type design structure, is mounted on shaft coupling enclosure interior, and building block quantity is few, and structure is simple, fortune
Row is reliable, is easily installed, can effectively save certain occupied space.
Detailed description of the invention
Fig. 1 is the cross-sectional view of shaft coupling parking sealing arrangement provided by the embodiment of the present invention.
In figure:
1, shaft coupling；2, shell；21, first shell；22, second shell；3, partition is sealed；31, guide ring；32, annular
Seal boss；33, sealed body；4, sealing ring；5, air inlet；6, elastic component；7, Simmer ring.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will be described in further detail in conjunction with technical solution of the attached drawing to the embodiment of the present invention, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
A kind of shaft coupling parking sealing arrangement is present embodiments provided, can refer to Fig. 1, the shaft coupling parking sealing arrangement packet
Include shell 2, sealing partition 3, sealing ring 4, elastic component 6 and Simmer ring 7, wherein shell 2 covers at the outside of shaft coupling 1, close
Packing plate 3 is set between shaft coupling 1 and shell 2, seals partition 3 and the inner wall of shell 2 is slidably and sealingly connected with, and be configured as
It can slide into along the inner wall of shell 2 and be bonded with the compression of shaft coupling 1, sealing partition 3 can be with shell 2 and the common shape of shaft coupling 1
At confined space, the radgas leaked out from nuclear power fuel salt pump is sealed, effectively prevent radgas
It outwardly leaks, prevents it from endangering environment.
In the present embodiment, shaft coupling 1 is flange-face coupling.Shell 2 can be an integral structure, and be also possible to split type
Structure.Preferably, in the present embodiment, shell 2 includes 22 two parts of first shell 21 and second shell being detachably connected, with
Convenient for being processed to the structure on shell 2.Optionally, together with first shell 21 is bolted with second shell 22,
Easy to disassemble and maintenance.Further, sealing ring is configured between first shell 21 and second shell 22, to guarantee shell 2
Air-tightness.In the present embodiment, the outer diameter of first shell 21 is less than the outer diameter of second shell 22, and first shell 21 and second shell
The connecting pin of body 22 is provided with flange, reserves installation site for connection bolt between the two.Preferably, the internal diameter of first shell 21
Less than the diameter of above-mentioned sealing partition 3, installation site is reserved for elastic component 6, and the internal diameter of first shell 21 is set greater than
The lip diameter of shaft coupling 1, to avoid the normal rotation of interference shaft coupling 1.
In the present embodiment, stepped hole is offered on the inner wall of second shell 22, is provided with annular on the step of stepped hole
Slot 23, sealing partition 3 are located on the step of stepped hole and surround annular gas storehouse, annular gas storehouse and high-pressure air source phase with annular groove 23
Connection is passed through high pressure gas into annular gas storehouse to seal the sliding of partition 3 and provides power.Preferably, high-pressure air source is high pressure
Source nitrogen, high pressure nitrogen are easily obtained and are not easy to react with other substances.Further, on the inner wall of second shell 22
Air inlet 5 is offered, one end of air inlet 5 is connected with annular gas storehouse, and the other end is connected to elevated pressure nitrogen gas source, and being convenient for will be extraneous
High pressure nitrogen is passed into annular gas storehouse, and sealing partition 3 is jacked up.
In the present embodiment, sealing partition 3 includes guide ring 31, ring packing boss 32 and sealed body 33.Optionally, it leads
To ring 31, ring packing boss 32 and sealed body 33 is an integral structure or split type structure.Preferably, in the present embodiment
Guide ring 31, ring packing boss 32 and sealed body 33 use integral structure, and structural strength high sealing performance is good.
33 horizontal cover of sealed body is set to the opening of annular groove 23, the major diameter phase of the outer diameter and stepped hole of sealed body 33
Together, so that the major diameter section inner wall formation that the outer of sealed body 33 can compress stepped hole is slidably and sealingly connected with.Preferably, it seals
It is equipped with sealing ring 4 between main body 33 and the major diameter section inner wall of stepped hole, better seal can be played the role of.
Guide ring 31 is located at sealing partition 3 close to the side of shell 2, and is set to a side end face of sealed body 33 and erects
It is straight to extend.Optionally, the height of guide ring 31 is set greater than between 33 end face of sealed body and the nearest flange end face of shaft coupling 1
Distance, the outer diameter of guide ring 31 and the path of stepped hole are identical, and guide ring 31 is pressed in the path section of stepped hole
Wall formation is slidably and sealingly connected with.Preferably, sealing ring 4, Neng Gouqi is equipped between guide ring 31 and the path section inner wall of stepped hole
It is acted on to better seal.Meanwhile guide ring 31 can be slided with the sliding of sealed body 33 along the path section inner wall of stepped hole,
Guiding role is played to the movement of sealing partition 3.
Ring packing boss 32 is located at sealing partition 3 close to the side of shaft coupling 1, and is set to the another of sealed body 33
Side end face.The internal diameter of ring packing boss 32 is set greater than the diameter of 1 main body of shaft coupling, close to avoid shaft coupling 1 and annular
Envelope boss 32 interferes, and influences the rotation of shaft coupling 1.Further, the height of ring packing boss 32 is configured to
Guarantee that ring packing boss 32 touches the end face of 1 flange connector of shaft coupling prior to sealed body 33, so that ring packing boss
The 32 flange connector end faces that can compress shaft coupling 1, which are formed, to be tightly connected.Further, ring packing boss 32 and shaft coupling
It is equipped with sealing ring 4 between 1 flange end face, better seal can be played the role of.
In the present embodiment, the both ends of elastic component 6 are connect with first shell 21 and sealed body 33 respectively.Specifically,
Pit is offered on the flange inner face of first shell 21, also offers pit accordingly on the opposing end surface of sealed body 33,
6 one end of elastic component is located in the pit of first shell 21, and 6 other end of elastic component is located in the pit of sealed body 33, so that bullet
Property 6 installation site of part stablize, distortion difficult to slide.Preferably, elastic component 6 is set as the uniform cloth of multiple and along shaft coupling circumferential direction
It sets, uniform and enough restoring forces can be provided for sealing partition 3, prevent sealing partition 3 from Caton occurs when sliding, be conducive to improve
Seal the smoothness that partition 3 slides.In the present embodiment, elastic component 6 selects spring, and spring is easily obtained and cost is relatively low.In
In this example, when high pressure nitrogen is passed through annular gas storehouse for the sealing jack-up of partition 3, spring is compressed；When in the annular gas storehouse of discharge
High pressure nitrogen after, spring stretching, extension, sealing partition 3 resetted under the action of multiple spring-return power, in the process, guide ring
31 press the path section inner wall of stepped hole always, and sealed body 33 compresses the major diameter section inner wall of stepped hole always.
Preferably, in the shaft coupling parking sealing arrangement, Simmer ring 7 is equipped between shaft coupling 1 and axis.Sealing ring 7
It can be set between first segment axis and first segment shaft coupling, can be set between second segment axis and second segment shaft coupling, also
It can be respectively provided with Simmer ring 7 between first segment axis and first segment shaft coupling, between second segment axis and second segment shaft coupling, it can
The gap for effectivelying prevent radgas to pass through axis and shaft coupling 1 at any time leaks.
The course of work of shaft coupling parking sealing arrangement provided in this embodiment is illustrated below.
When the pump group of nuclear power fuel salt pump breaks down or needs to repair, pump group parking, shaft coupling 1 stops fortune
Turn, high pressure nitrogen constantly poured into annular gas storehouse by air inlet 5, partition 3 is sealed under the action of high pressure nitrogen and is jacked up,
Spring is compressed.In the process, ring packing boss 32 is moved with sealed body 33, and guide ring 31 is also led with sealing
Body 33 is moved along the path section of stepped hole, and always with the inner wall of path section in compression sealing state.When ring packing boss
32 seal 3 stop motion of partition when moving to the end face for compressing 1 flange connector of shaft coupling, hereafter, keep the gas in annular gas storehouse
Pressure makes ring packing boss 32 that the end face for compressing 1 flange connector of shaft coupling be kept to be formed and is tightly connected, to make to seal partition 3
Confined space is collectively formed with shell 2 and shaft coupling 1, prevents the radgas in pump group from leaking.
When the trouble shooting of the pump group of nuclear power fuel salt pump or maintenance finish, it is discharged in annular gas storehouse by air inlet 5
High pressure nitrogen, air pressure decline after, spring stretching, extension make sealed body 33 reset, ring packing boss 32 with sealed body 33 together
Until the end face with 1 flange connector of shaft coupling completely disengages, the shaft coupling 1 in pump group can restore to run well for movement.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, be able to carry out it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.There is no need and unable to give thoroughly all embodiments
It lifts.Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the present invention
Within scope of protection of the claims.
Claims (10)
1. a kind of shaft coupling parking sealing arrangement characterized by comprising
Shell (2), covers at the outside of shaft coupling (1)；
It seals partition (3), is set between the shaft coupling (1) and the shell (2), the sealing partition (3) and the shell
The inner wall of body (2) is slidably and sealingly connected with, and is configured to slide into and the shaft coupling along the inner wall of the shell (2)
(1) fitting is compressed, confined space can be collectively formed with the shell (2) and the shaft coupling (1) in the sealing partition (3).
2. shaft coupling parking sealing arrangement according to claim 1, which is characterized in that opened up on shell (2) inner wall
There is stepped hole, be provided on the step of the stepped hole annular groove (23), sealing partition (3) is located at the platform of the stepped hole
Annular gas storehouse is surrounded on rank and with the annular groove (23), the annular gas storehouse is connected with high-pressure air source.
3. shaft coupling parking sealing arrangement according to claim 2, which is characterized in that the sealing partition (3) includes leading
Xiang Huan (31), ring packing boss (32) and sealed body (33), the sealed body (33) are covered on the annular groove (23)
Opening, the sealed body (33) and the major diameter section inner wall of the stepped hole be slidably and sealingly connected with, the guide ring (31) and
The ring packing boss (32) is located at the both sides of the face of the sealed body (33).
4. shaft coupling parking sealing arrangement according to claim 3, which is characterized in that the guide ring (31) is set to institute
Sealing partition (3) is stated close to the shell (2) side, the guide ring (31) and the path section inner wall sliding of the stepped hole are close
Envelope connection, the guide ring (31) can be slided along the path section inner wall of the stepped hole.
5. shaft coupling parking sealing arrangement according to claim 3, which is characterized in that the ring packing boss (32) sets
The sealing partition (3) is placed in close to the shaft coupling (1) side, the ring packing boss (32) is configured to and institute
It states shaft coupling (1) and compresses sealed connection.
6. shaft coupling parking sealing arrangement according to claim 3, which is characterized in that the guide ring (31) and the rank
Between terraced hole, between the ring packing boss (32) and the shaft coupling (1), the sealed body (33) and the stepped hole
Between be equipped with sealing ring (4).
7. shaft coupling parking sealing arrangement according to claim 2, which is characterized in that the shell (2) is equipped with air inlet
Hole (5), the air inlet (5) are connected to the annular gas storehouse.
8. shaft coupling parking sealing arrangement according to claim 1, which is characterized in that further include elastic component (6), the bullet
The both ends of property part (6) are connect with the shell (2) and the sealing partition (3) respectively.
9. shaft coupling parking sealing arrangement according to claim 1, which is characterized in that between the shaft coupling (1) and axis
Equipped with Simmer ring (7).
10. shaft coupling parking sealing arrangement according to claim 1, which is characterized in that the shell (2) includes detachable
The first shell (21) and second shell (22) of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791553.6A CN110410355A (en) | 2019-08-26 | 2019-08-26 | A kind of shaft coupling parking sealing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791553.6A CN110410355A (en) | 2019-08-26 | 2019-08-26 | A kind of shaft coupling parking sealing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110410355A true CN110410355A (en) | 2019-11-05 |
Family
ID=68368641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910791553.6A Pending CN110410355A (en) | 2019-08-26 | 2019-08-26 | A kind of shaft coupling parking sealing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410355A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2520396A1 (en) * | 1975-05-07 | 1976-11-18 | Andritz Ag Maschf | Primary coolant pump emergency seal for boiling water reactor - has axially sliding ring operated by compressed air |
| CN2080584U (en) * | 1990-12-11 | 1991-07-10 | 安徽省铜陵市节煤设备厂 | Stop sealer for impurity pump |
| US5449180A (en) * | 1992-01-24 | 1995-09-12 | Jeumont Schneider Industrie | Safety device for primary pump |
| US6371488B1 (en) * | 1999-12-17 | 2002-04-16 | George E. Szymborski | Sealing system for high pressure closed systems having a rotating member and a housing therein |
| CN103267030A (en) * | 2013-05-22 | 2013-08-28 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump shut-down seal device |
| CN210317882U (en) * | 2019-08-26 | 2020-04-14 | 上海电气凯士比核电泵阀有限公司 | Coupler parking sealing device |
-
2019
- 2019-08-26 CN CN201910791553.6A patent/CN110410355A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2520396A1 (en) * | 1975-05-07 | 1976-11-18 | Andritz Ag Maschf | Primary coolant pump emergency seal for boiling water reactor - has axially sliding ring operated by compressed air |
| CN2080584U (en) * | 1990-12-11 | 1991-07-10 | 安徽省铜陵市节煤设备厂 | Stop sealer for impurity pump |
| US5449180A (en) * | 1992-01-24 | 1995-09-12 | Jeumont Schneider Industrie | Safety device for primary pump |
| US6371488B1 (en) * | 1999-12-17 | 2002-04-16 | George E. Szymborski | Sealing system for high pressure closed systems having a rotating member and a housing therein |
| CN103267030A (en) * | 2013-05-22 | 2013-08-28 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump shut-down seal device |
| CN210317882U (en) * | 2019-08-26 | 2020-04-14 | 上海电气凯士比核电泵阀有限公司 | Coupler parking sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209444958U (en) | A kind of whirl compensator sealing structure with the level on outer tube inner convex platform | |
| CN110410355A (en) | A kind of shaft coupling parking sealing arrangement | |
| CN112923164A (en) | Leakage blocking method and leakage blocking device | |
| CN210317882U (en) | Coupler parking sealing device | |
| CN207349084U (en) | The gland seal device of oil free screw machine | |
| CN111271465A (en) | Sealing washer that wear-resisting leakproofness is good for compressor | |
| CN201694623U (en) | Spiral conveyor | |
| CN219102067U (en) | Novel picture peg door of two sealed ash discharging functions | |
| CN208541925U (en) | A kind of deduster cylinder push-rod device | |
| CN106089725A (en) | For detecting the pressurizer of erasure effect | |
| CN207514398U (en) | A kind of wall pipe structure | |
| CN213334423U (en) | Horizontal air passage sealing valve assembly | |
| CN207848732U (en) | Tensioner plugging structure in a kind of automobile product gas leakage detection nozzle | |
| CN112228384A (en) | Self-sealing type isolation sleeve for magnetic pump | |
| CN213744909U (en) | Novel screw pump sealing device | |
| CN219224075U (en) | Pressure test detection mechanism for lower valve box lower seal assembly of blast furnace equipment | |
| CN217463261U (en) | Double-layer air sealing structure of poppet valve, combustion chamber and heat storage oxidation device | |
| CN216242497U (en) | Novel valve body structure for preventing leakage | |
| CN216344059U (en) | Fluorine-lined ball valve capable of avoiding leakage | |
| CN219842115U (en) | Hydraulic valve tightness testing device | |
| CN207750511U (en) | A kind of smoke wind pipe isolation valve plate | |
| CN213361073U (en) | Plugging structure for air leakage at bottom of hot blast stove | |
| CN209658736U (en) | A kind of supplementary type is used for the outer housing of gas-insulated metal enclosed switchgear | |
| CN217271880U (en) | Shaft head multilayer plugging device | |
| CN215560399U (en) | Dust removal device for disintegrating slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |