CN207474082U - A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber - Google Patents
A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber Download PDFInfo
- Publication number
- CN207474082U CN207474082U CN201721705056.2U CN201721705056U CN207474082U CN 207474082 U CN207474082 U CN 207474082U CN 201721705056 U CN201721705056 U CN 201721705056U CN 207474082 U CN207474082 U CN 207474082U
- Authority
- CN
- China
- Prior art keywords
- heap chamber
- steel plate
- annular seating
- bottom member
- chamber bottom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of frame-type heap chamber bottom members for the radiation leakage beam shielding of presurized water reactor heap chamber, the heap chamber bottom member is arranged between primary shielding concrete and pressure vessel, the heap chamber bottom member includes annular seating and flexible steel plate, and the annular seating is in circular hollow frame formula structure；Be additionally provided in the annular seating for cable by labyrinth channel；The flexible steel plate is multistage, and flexible steel plate annular is distributed in the inside of annular seating, and the position of flexible steel plate can be adjusted in the radial direction of annular seating.Screening ability that the heap chamber bottom member that this programme provides radiates reactor cavity leakage beam is strong, it is simple in structure, light-weight, convenient for manufacturing and install.
Description
Technical field
The utility model is related to nuclear reactor designs technical fields, and in particular to one kind is fixed on reactor cavity concrete
Inner surface, for shielding the shielding construction of heap chamber radiation leakage beam, more particularly to one kind for presurized water reactor heap chamber radiation leakage Shu Ping
The frame-type heap chamber bottom member covered.
Background technology
Nuclear power plant is reacted there are annulus between reator body and heap chamber concrete, and annulus is reactor insulating layer, branch
It the arrangement of equipment such as holds and equipment installation provides space, but annulus improves the leakage of core radiation source radiation simultaneously, leads
Cause the radiation raising at reactor building operating platform.Domestic and international nuclear power plant is using a kind of structure of heap chamber bottom member to ring
Shape gap is shielded.Due to the presence of reactor pressure vessel insulating layer, heap chamber bottom member cannot effectively block radiation leakage
Beam, can only be by compressing heap cavity gap, and limitation leaks the mode of beam to be shielded, in order to compress heap cavity gap, heap bottom of chamber portion structure
Part needs to increase member height as far as possible, while reduces the gap between pressure vessel as far as possible.In addition, heap bottom of chamber portion
Also there are pore space structure and corresponding shield plugs for component, and it acts as ensure that cable passes through in heap chamber.
The structure of traditional heap chamber bottom member uses stainless steel sink, and loaded concrete is being poured in slot.Total is led to
It crosses steel cantilever and is fixed on heap chamber concrete inner surface, in bottom member setting duct for cable penetration, while ad hoc screen is set
It blocks and cable duct is shielded.The major defect of the structure is：1) total is solid, and weight is excessive, and bearing is tired
Difficulty is unfavorable for increasing component；2) it needs to be cable by arranging special duct and corresponding shield plug；3) in order to avoid pressure
Interference and collision when container is installed, there are larger gaps between heap chamber bottom member and pressure vessel, are unfavorable for heap bottom of chamber portion structure
Part plays shielding action.
Utility model content
During Practical Project uses for the above-mentioned prior art, total existing for traditional heap chamber bottom member is solid
, weight is excessive, and bearing is difficult, is unfavorable for increasing component；It needs to be cable by arranging special duct and corresponding shielding
Plug；Interference and collision when being installed in order to avoid pressure vessel, there are larger gap between heap chamber bottom member and pressure vessel, no
The problem of playing shielding action conducive to heap chamber bottom member, the utility model provide a kind of for presurized water reactor heap chamber radiation leakage beam
The frame-type heap chamber bottom member of shielding.
To solve the above problems, a kind of frame-type for the radiation leakage beam shielding of presurized water reactor heap chamber provided by the utility model
Heap chamber bottom member is solved the problems, such as by following technical essential：A kind of frame-type for the radiation leakage beam shielding of presurized water reactor heap chamber
Heap chamber bottom member, the heap chamber bottom member are arranged between primary shielding concrete and pressure vessel, heap bottom of chamber portion structure
Part includes annular seating and flexible steel plate, and the annular seating is in circular hollow frame formula structure；
Be additionally provided in the annular seating for cable by labyrinth channel；
The flexible steel plate is multistage, and flexible steel plate annular is distributed in the inside of annular seating, and the position of flexible steel plate can
It is adjusted in the radial direction of annular seating.
Specifically, after the flexible steel plate of setting is in pressure vessel, installation is complete, it is allowed to stretch by adjusting flexible steel plate
Go out, after generating interaction force with pressure vessel, reach and gap between heap chamber bottom member and pressure vessel is reduced or eliminated
Purpose；The labyrinth channel of setting is similar to the bending runner that media flow is used in the labyrinth seal of sealing technique, i.e. labyrinth leads to
Channel between the entry and exit in road is used to arrange cable tube in rugged shape, the labyrinth channel of setting is bent；The annular seating of setting is used
In engine base and the carrier of labyrinth channel as flexible steel plate, be securable on primary shielding concrete, use annular seating in
The form of circular hollow frame formula structure, pours object, the knot compared to solid concrete widely used in the prior art
Structure has lighter quality, is mounted and fixed on heap chamber cantilever beam convenient for passing through lifting mode.
The heap chamber bottom member that this programme provides effectively is shielded that can leak Shu Jinhang to heap chamber radioactive ray,
While ensuring that reactor operating platform radiation dose rate and activation meet related request, by the restriction to annular seating originally
Scheme can in a limited space it is interior reduce heap chamber bottom member quality；It is somebody's turn to do by the way that labyrinth channel is set to reduce since cable passes through
Penetrating radiation caused by component；Shielding plug structure ad hoc in the prior art is eliminated simultaneously, conducive to heap chamber bottom member is simplified
Structure；Simultaneously by the flexible steel plate of setting, the gap between heap chamber bottom member and pressure vessel is reduced, to improve reaction
Heap chamber radiation leakage beam screening ability；Simultaneously because this programme can be steel framework formula structure, can be transported after the completion of factory manufactures
To scene, reduce cast-in-place concrete, reduce the workload of presurized water reactor construction site, be conducive to save construction cost.
Further technical solution is：
It is moved for ease of braking flexible steel plate in the radial direction of annular seating, further includes and be fixed on each flexible steel plate and be used for
The braking parts of each flexible steel plate movement are braked, the braking parts include the threaded rod being threadedly coupled with annular seating, the screw thread
The either end of bar is connected on flexible steel plate, and threaded rod can stretch steel plate in threaded rod axial direction around own axis
Position fix.More than threaded rod can be around own axis, the fixed form in position of the steel plate in threaded rod axial direction of stretching,
It can be realized by threaded rod with corresponding flexible steel plate ball connection or other similar structure types.More than ball connects
In one spherical cavity of end set or ball of threaded rod, an and phase interworking corresponding with spherical cavity or ball is set on flexible steel plate
The ball or spherical cavity of conjunction.Other forms can be threaded rod and spring steel plate clearance fit, be set on the threaded rod with chalaza both ends
Put the structure type of limit protrusion.
For ease of adjusting the position of flexible steel plate on the top of annular seating, while as a kind of structure for being easy to implement self-locking
Form, the braking parts further include handwheel, drive link, intermeshing worm and worm wheel, and the both ends of the drive link are solid respectively
Surely it is connected on handwheel and worm gear, threaded rod is fixedly connected with worm screw and the two axis collinear.
To optimize the stress of threaded rod, the lead being mutually parallel with threaded rod, institute are further fixed on the flexible steel plate
State the hole being provided on annular seating with lead clearance fit.It is preferred that be each respectively provided with two on flexible steel plate is located at screw thread respectively
The lead of bar both sides.
It is described to stretch for flexible steel plate is enabled preferably to support pressure vessel and causes the two that there is smaller gap
Contracting steel plate is isometrical arc plate.
As a kind of structure type under identical material utilization amount with good stiffness, the annular seating includes multiple axial directions
Ring and multiple radial direction rings, the axial rings are stacked in the axial direction of annular seating, and radial direction ring is between adjacent axial rings
For being fixedly connected between adjacent axial rings, the hollow region of annular seating tower structure is by adjacent axial rings and radial direction
Collar is into and the hollow region is multiple, the sectional area of the hollow region on annular seating closer to its inner wall position is smaller.With
It is aimed on upper annular seating closer to the sectional area of the hollow region of its inner wall position is smaller：Close to the position of pressure vessel
Annular seating is comparatively dense, to realize while good shielding action is ensured, mitigates the weight of annular seating.
As a kind of structure type for being easy to make or conveniently adapt to mounting condition, the annular seating is a single-casting
Or the splicing construction being welded to connect.
The utility model has the advantages that：
This structure provides a kind of heap chamber bottom member, is somebody's turn to do for the shielding problem for solving reactor cavity radiation leakage beam
The design feature of component substitutes original solid concrete and pours object, light-weight, convenient for by after pre-fabricated factory machines, leading to
Lifting mode is crossed on heap chamber cantilever beam, before pressure vessel installation, bottom member is fixed on by cantilever by bolt
Liang Shang；
The labyrinth channel set in this structure simultaneously is convenient for the cable tube of labyrinth type arrangement, is reduced reaching since cable is worn
Caused by crossing the component while penetrating radiation, the ad hoc shielding plug structure used in the prior art is eliminated, conducive to heap is simplified
The structure type of chamber bottom member；
Steel plate is stretched out, reduce or eliminated after pressure appearance installs by the telescopic steel plate structure of this structure setting
Gap between framework and pressure vessel further improves the screen that heap chamber bottom member radiates reactor cavity leakage beam
Cover ability.
Description of the drawings
Fig. 1 is a kind of frame-type heap bottom of chamber portion structure for the radiation leakage beam shielding of presurized water reactor heap chamber described in the utility model
One specific embodiment scheme of installation of part；
Fig. 2 is a kind of frame-type heap bottom of chamber portion structure for the radiation leakage beam shielding of presurized water reactor heap chamber described in the utility model
The broken section structure diagram of one specific embodiment of part；
Fig. 3 is a kind of frame-type heap bottom of chamber portion structure for the radiation leakage beam shielding of presurized water reactor heap chamber described in the utility model
In part, the structure and installation form schematic diagram of one specific embodiment of braking parts.
Figure acceptance of the bid, which is remembered, is respectively：1st, primary shielding concrete, 21, annular seating, 22, flexible steel plate, 23, labyrinth channel, 24,
Axial rings, 25, radial direction ring, 3, pressure vessel, 4, handwheel, 5, drive link, 6, worm gear, 7, worm screw, 8, threaded rod, 9, lead.
Specific embodiment
The utility model provides a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber, uses
In solution：During prior art Practical Project uses, total existing for traditional heap chamber bottom member is solid, weight mistake
Greatly, bearing is difficult, is unfavorable for increasing component；It needs to be cable by arranging special duct and corresponding shield plug；In order to keep away
Exempt from interference and collision during pressure vessel installation, there are larger gaps between heap chamber bottom member and pressure vessel, are unfavorable for heap chamber
Bottom member plays the problem of shielding action.Following technique effect can reach by structure provided by the utility model：Heap bottom of chamber
Screening ability that portion's component radiates reactor cavity leakage beam is strong, it is simple in structure, light-weight, convenient for manufacturing and install.
With reference to embodiment, the utility model is described in further detail, but the utility model be not limited only to
Lower embodiment：
Embodiment 1：
As depicted in figs. 1 and 2, a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber, should
Heap chamber bottom member is arranged between primary shielding concrete 1 and pressure vessel 3, and the heap chamber bottom member includes annular seating 21
With flexible steel plate 22, the annular seating 21 is in circular hollow frame formula structure；
Be additionally provided in the annular seating 21 for cable by labyrinth channel 23；
The flexible steel plate 22 is multistage, and flexible 22 annular of steel plate is distributed in the inside of annular seating 21, and flexible steel plate 22
Position can be adjusted in the radial direction of annular seating 21.
In the present embodiment, after the flexible steel plate 22 of setting is in pressure vessel 3, installation is complete, by adjusting flexible steel plate
22 are allowed to stretch out, and after generating interaction force with pressure vessel 3, reach and heap chamber bottom member and pressure vessel 3 is reduced or eliminated
Between gap purpose；The labyrinth channel 23 of setting is similar to the bending stream that media flow is used in the labyrinth seal of sealing technique
Channel between road, the i.e. entry and exit of labyrinth channel 23 is used to arrange cable in rugged shape, the labyrinth channel 23 of setting is bent
Pipe；The annular seating 21 of setting is used for the carrier of the engine base and labyrinth channel 23 as flexible steel plate 22, is securable to primary shielding
On concrete 1, annular seating 21 is used as in the form of circular hollow frame formula structure, compared to adopting extensively in the prior art
Solid concrete pours object, which has lighter quality, is mounted and fixed on convenient for passing through lifting mode in heap chamber
On cantilever beam.
Heap chamber bottom member provided in this embodiment effectively shields that can leak Shu Jinhang to heap chamber radioactive ray
It covers, it is ensured that while reactor operating platform radiation dose rate and activation meet related request, pass through the restriction to annular seating 21
So that this programme can in a limited space it is interior reduce heap chamber bottom member quality；By the way that labyrinth channel 23 is set to reduce due to electricity
Cable passes through penetrating radiation caused by the component；Shielding plug structure ad hoc in the prior art is eliminated simultaneously, conducive to heap chamber is simplified
The structure of bottom member；Simultaneously by the flexible steel plate 22 of setting, between reducing between heap chamber bottom member and pressure vessel 3
Gap, to improve reactor cavity radiation leakage beam screening ability；Simultaneously because this programme can be steel framework formula structure, it can be in factory
Scene is transported to after the completion of manufacture, is reduced cast-in-place concrete, is reduced the workload of presurized water reactor construction site, is conducive to save
Save construction cost.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1 to Figure 3, for ease of braking flexible steel
Plate 22 is moved in the radial direction of annular seating 21, is further included and is fixed on each flexible steel plate 22 for braking each flexible steel plate 22
The braking parts of movement, the braking parts include the threaded rod 8 being threadedly coupled with annular seating 21, the either end of the threaded rod 8
It is connected on flexible steel plate 22, and threaded rod 8 can be around own axis, position of the steel plate 22 in 8 axial direction of threaded rod of stretching
It is fixed.More than threaded rod 8 can be around own axis, and position fixed form of the steel plate 22 in 8 axial direction of threaded rod of stretching can
It is realized by threaded rod 8 with the connection of 22 ball of corresponding flexible steel plate or other similar structure types.The connection of more than ball can be with
For one spherical cavity of end set or ball in threaded rod 8, set on flexible steel plate 22 one it is corresponding with spherical cavity or ball and
The ball or spherical cavity of mutual cooperation.Other forms can be for threaded rod 8 and spring steel plate clearance fit, the screw thread with chalaza both ends
The structure type of limit protrusion is set on bar 8.
For ease of adjusting the position of flexible steel plate 22 on the top of annular seating 21, while self-locking is easy to implement as a kind of
Structure type, the braking parts further include handwheel 4, drive link 5, intermeshing worm screw 7 and worm gear 6, and the two of the drive link 5
End is respectively fixedly connected on handwheel 4 and worm gear 6, and threaded rod 8 is fixedly connected with worm screw 7 and the two axis collinear.
To optimize the stress of threaded rod 8, the lead being mutually parallel with threaded rod 8 is further fixed on the flexible steel plate 22
9, the hole with 9 clearance fit of lead is provided on the annular seating 21.It is preferred that each two points are respectively provided on flexible steel plate 22
Not Wei Yu 8 both sides of threaded rod lead 9.
Embodiment 3：
The present embodiment is further qualified on the basis of embodiment 1, as depicted in figs. 1 and 2, to cause flexible steel plate 22
Pressure vessel 3 can preferably be supported and the two is caused to have smaller gap, the flexible steel plate 22 is isometrical circular arc
Plate.
As a kind of structure type under identical material utilization amount with good stiffness, the annular seating 21 includes multiple axis
To ring 24 and multiple radial direction rings 25, the axial rings 24 are stacked in the axial direction of annular seating 21, and radial direction ring 25 is located at adjacent
Axial rings 24 between for being fixedly connected between adjacent axial rings 24, the hollow region of 21 tower structure of annular seating by
Adjacent axial rings 24 and radial direction ring 25 surround, and the hollow region is multiple, closer to its inner wall position on annular seating 21
Hollow region sectional area it is smaller.
As a kind of structure type for being easy to make or conveniently adapt to mounting condition, the annular seating 21 is cast for an entirety
Part or the splicing construction being welded to connect.
The above content is the further descriptions made with reference to specific preferred embodiment to the utility model, it is impossible to recognize
Determine specific embodiment of the present utility model and be confined to these explanations.For the common skill of the utility model technical field
For art personnel, the other embodiment that is obtained in the case where not departing from the technical solution of the utility model should be included in this practicality
In novel protection domain.
Claims (7)
1. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber, which is arranged on
Between primary shielding concrete (1) and pressure vessel (3), which is characterized in that the heap chamber bottom member includes annular seating (21)
With flexible steel plate (22), the annular seating (21) is in circular hollow frame formula structure；
Be additionally provided in the annular seating (21) for cable by labyrinth channel (23)；
The flexible steel plate (22) is multistage, and flexible steel plate (22) annular is distributed in the inside of annular seating (21), and flexible steel plate
(22) position can be adjusted in the radial direction of annular seating (21).
2. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 1,
It is characterized in that, the braking parts for being fixed on each flexible steel plate (22) for braking each flexible steel plate (22) movement are further included,
The braking parts include the threaded rod (8) being threadedly coupled with annular seating (21), and the either end of the threaded rod (8), which is connected to, stretches
On contracting steel plate (22), and threaded rod (8) can be around own axis, position of the steel plate (22) in threaded rod (8) axial direction of stretching
It is fixed.
3. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 2,
It is characterized in that, the braking parts further include handwheel (4), drive link (5), intermeshing worm screw (7) and worm gear (6), it is described
The both ends of drive link (5) are respectively fixedly connected on handwheel (4) and worm gear (6), threaded rod (8) be fixedly connected with worm screw (7) and
The two axis collinear.
4. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 2,
It is characterized in that, the lead (9) being mutually parallel with threaded rod (8), the annular are further fixed on the flexible steel plate (22)
It is provided on seat (21) and the hole of lead (9) clearance fit.
5. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 1,
It is characterized in that, the flexible steel plate (22) is isometrical arc plate.
6. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 1,
It is characterized in that, the annular seating (21) includes multiple axial rings (24) and multiple radial direction rings (25), the axial rings (24) exist
It is stacked in the axial direction of annular seating (21), radial direction ring (25) is used for adjacent axial rings between adjacent axial rings (24)
(24) being fixedly connected between, the hollow region of annular seating (21) tower structure is by adjacent axial rings (24) and radial direction ring
(25) it surrounds, and the hollow region is multiple, closer to the sectional area of the hollow region of its inner wall position on annular seating (21)
It is smaller.
7. a kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber according to claim 6,
It is characterized in that, the annular seating (21) is a single-casting or the splicing construction being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721705056.2U CN207474082U (en) | 2017-12-08 | 2017-12-08 | A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721705056.2U CN207474082U (en) | 2017-12-08 | 2017-12-08 | A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207474082U true CN207474082U (en) | 2018-06-08 |
Family
ID=62257441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721705056.2U Active CN207474082U (en) | 2017-12-08 | 2017-12-08 | A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207474082U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767329A (en) * | 2019-11-05 | 2020-02-07 | 中国核动力研究设计院 | Pressurized water reactor cavity radiation beam leakage shielding device |
| CN112489826A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Pool type shielding device for small-sized reactor |
| CN112489827A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Shielding structure for compactly arranging small stacks |
-
2017
- 2017-12-08 CN CN201721705056.2U patent/CN207474082U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767329A (en) * | 2019-11-05 | 2020-02-07 | 中国核动力研究设计院 | Pressurized water reactor cavity radiation beam leakage shielding device |
| CN112489826A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Pool type shielding device for small-sized reactor |
| CN112489827A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Shielding structure for compactly arranging small stacks |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207474082U (en) | A kind of frame-type heap chamber bottom member for the radiation leakage beam shielding of presurized water reactor heap chamber | |
| CN206090335U (en) | Novel bridge is consolidated device | |
| CN101499637B (en) | Tunnel ring-shaped deployment for electric cable with large cross-section | |
| CN103871496A (en) | Integrated reactor roof structure for pressurized water reactor | |
| CN103871497A (en) | Cantilever type supporting device of reactor pressure vessel | |
| CN106531266A (en) | Spent fuel transfer channel shielding device | |
| CN107723995A (en) | Non-porous interior bucket drainer for washer, method and its washing machine | |
| CN105089049B (en) | Anchor cable outer anchor head steel strand protective device and installation method thereof | |
| CN207913793U (en) | High vacuum high and low temperature environment vacuum vibration-isolating platform | |
| JP6577014B2 (en) | Method of pulling out the in-core instrument from the core of a pressurized water reactor | |
| CN203026159U (en) | Integrated reactor roof structure of pressurized water reactor | |
| JP2012140954A (en) | Removable steam inlet assembly for steam turbine | |
| CN205413857U (en) | Dash quick -witted water diversion disk rotation -proof structure of bottle | |
| CN104700906B (en) | A kind of equipment gate end socket | |
| CN209114600U (en) | The integral type concrete pedestal of box-type substation | |
| CN207069399U (en) | A kind of novel solid cabinet | |
| CN208317087U (en) | X-ray emission chamber and emission source machine | |
| CN206093336U (en) | Hydraulic turbine antivibration voltage -sharing pipe | |
| CN206449306U (en) | Pipeline support | |
| RU2636931C2 (en) | Method for manufacturing fuel element of nuclear reactor | |
| CN202175684U (en) | Simple and convenient pressure-testing device of blast furnace cooling wall | |
| CN218442260U (en) | Non-metal expansion joint for circulating fluidized bed boiler | |
| CN206478374U (en) | A kind of construction drainage pipe sound-insulating structure | |
| CN204459570U (en) | The Novel connecting mechanism of transformer and Electrode in Gas Insulated System | |
| CN217003616U (en) | Pipeline expansion joint convenient to install |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |