CN207731668U - A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton - Google Patents
A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton Download PDFInfo
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- CN207731668U CN207731668U CN201721772671.5U CN201721772671U CN207731668U CN 207731668 U CN207731668 U CN 207731668U CN 201721772671 U CN201721772671 U CN 201721772671U CN 207731668 U CN207731668 U CN 207731668U
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- pipe
- tube socket
- plug
- pipe connected
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- 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
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Abstract
The utility model belongs to reactor fuel assemblies technical field, and in particular to a kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton.The pipe connected pipe that is oriented to of the utility model is the hollow cylinder that upper and lower end face opens, and internal diameter matches with pipe outside diameter is oriented to, and is oriented to pipe connected pipe lower part expanded joint outside guide pipe, is oriented to pipe connected pipe top and is along the circumferential direction equipped with several protrusions；The upper tube socket of the utility model, including holddown spring and tube socket need to connect at the duct inner wall of guide pipe in tube socket, several sliding slots are arranged, and spring is arranged in sliding slot end, and sprue is connected in front of spring, and sliding slot is equipped with recess below sprue.The utility model is simple in structure, install convenient, effectively overcomes the problem of bindiny mechanism is easy to loosen between prior art guide pipe and upper tube socket, significantly improves the safety and reliability of fuel assembly.
Description
Technical field
The utility model belongs to reactor fuel assemblies technical field, and in particular to a kind of guiding pipe connected pipe, upper tube socket
And fuel assembly skeleton.
Background technology
Fuel assembly is generally by upper tube socket, bottom nozzle, grid spacer, guide pipe and fuel bar construction.Fuel assembly is located at
Among the chamber of reactor, coolant flows through fuel rod by reactor core, takes away reaction heat.
Guide pipe is the important feature component of fuel assembly, and stick and neutron source rod provide insertion channel in order to control for it.Usually
More guide pipes are provided in a fuel assembly, the upper tube socket of upper end connection of guide pipe, the lower end of guide pipe connects down tube
Seat.
As shown in Figure 1 and Figure 2, in the prior art, the connection component of guide pipe and upper tube socket, including expansion-joint structure 2 and connection
Structure 3：Expansion-joint structure 2 is nested in inside tube socket 1, i.e., expanded joint is fixed on inside tube socket 1；The connection of 3 upper end of connection structure is swollen
Binding structure 2, lower end are nested in outside guide pipe 4, realize the connection of guide pipe 4 and upper tube socket 1.The technology of this connection design lacks
Be trapped in：It is complicated, difficult to install, easy to loosen, seriously affect the safety and reliability of fuel assembly.
Utility model content
The utility model technical issues that need to address are：The connection structure of guide pipe in the prior art and upper tube socket is multiple
It is miscellaneous, difficult to install, easy to loosen.
The technical solution of the utility model is as described below：
A kind of guiding pipe connected pipe, for the hollow cylinder that upper and lower end face opens, internal diameter and guiding pipe outside diameter phase
Match, be oriented to pipe connected pipe lower part expanded joint outside guide pipe, is oriented to pipe connected pipe top and is along the circumferential direction equipped with several protrusions.
Preferably：It is oriented to pipe connected pipe and is along the circumferential direction uniformly provided with 2 or 3 protrusions.
Preferably：The protrusion for being oriented to pipe connected pipe is cuboid or cylinder.
A kind of upper tube socket, including holddown spring and tube socket, holddown spring are fixed on above tube socket.It needs to connect in tube socket and lead
To at the duct inner wall of pipe, several sliding slots are set, the initiating terminal of sliding slot is located at the channel openings of tube socket lower face, sliding slot
Endcapped is inside tube socket；Spring is arranged in sliding slot end, and sprue is connected in front of spring, and sliding slot is equipped with recessed below sprue
It falls into；The quantity of sliding slot and the protrusion of width and above-mentioned guiding pipe connected pipe match.
Lower part expanded joint has the guiding pipe connected pipe of guide pipe, protrusion to be inserted into upper tube socket along the sliding slot of upper tube socket；It crosses herein
Sprue is first pressed to spring, fallen into the recess below sprue by Cheng Zhong, the protrusion for being oriented to pipe connected pipe；Later, sprue is in spring
Under the action of set back, block the protrusion for falling into recess.
A kind of fuel assembly skeleton, including guide pipe, grid spacer, upper tube socket and bottom nozzle, several guide pipes are from upper
It is applied in the lattice cell of grid spacer under and, the upper end of guide pipe is fixedly connected with upper tube socket, the lower end of guide pipe and bottom nozzle
It is fixedly connected.The upper tube socket uses the upper tube socket of above-mentioned design structure；Pipe connected pipe connection is oriented to using any one of the above
Guide pipe and upper tube socket；The lattice cell of the grid spacer is in four sides cylinder, and upper slot is respectively equipped on four faces of lattice cell, is used
In cooperation plug-in unit grafting, plug-in unit includes clamping part and plug division.
Preferably：The plug-in unit is angle plug-in unit comprising a clamping part and two plug divisions, two of which
Plug division is orthogonal, and clamping part is set between two plug divisions.
Preferably：The plug-in unit is side plug-in unit comprising two clamping parts and three plug divisions, three grafting
At T-shaped, clamping part is respectively arranged at position at a right angle between each two plug division in portion.
Preferably：The plug-in unit is channel card comprising three clamping parts and four plug divisions, four are inserted
Socket part across, clamping part are set between each two plug division.
Preferably：The plug-in unit is intermediate plug-in unit comprising four clamping parts and four plug divisions, four are inserted
Socket part across, clamping part are set between each two plug division.
The beneficial effects of the utility model are：
(1) a kind of guiding pipe connected pipe of the utility model and matched upper tube socket, simple in structure, install convenient,
The problem of bindiny mechanism is easy to loosen between prior art guide pipe and upper tube socket is effectively overcome, fuel assembly is significantly improved
Safety and reliability；
(2) design of the fuel assembly skeleton of the utility model, grid spacer is applicable not only to common rod shape fuel group
Part, applying also for such as annular fuel element has the fuel element of larger outer diameter, can make coolant and fuel element more
It fully contacts, located lateral is provided to fuel element and generates certain effect of mixing to coolant；
(3) fuel assembly skeleton of the utility model is clamped and is supported to fuel element using plug-in unit, overall stiffness
It significantly increases, and simplifies the processing program at spacer grid supporting position, reduce difficulty of processing；
(4) fuel assembly skeleton of the utility model is equipped with gap between plug-in unit plug division side and lattice cell side so that
The clamping force value range of clamping part increases, and can adapt to the work requirements under different situations；
(5) fuel assembly skeleton of the utility model, can be to avoid different when lattice cell uses not same material with plug-in unit
Kind material Welding Problems.
Description of the drawings
Fig. 1 is guide pipe in the prior art and upper tube socket connection relationship diagram；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is a kind of guide pipe connecting pipe structure schematic diagram of the utility model；
Fig. 4 is a kind of tube socket structural schematic diagram of upper tube socket of the utility model；
Fig. 5 is the grid spacer structural schematic diagram in the fuel assembly skeleton of the utility model；
Fig. 6 is intended to for angle plug-in unit；
Fig. 7 is side plug-in unit schematic diagram；
Fig. 8 is intermediate plug-in unit schematic diagram.
In figure, the upper tube sockets of 1-, 2- expansion-joint structures, 3- connection structures, 4- guide pipes, 5- guiding pipe connected pipes, 6- protrusions, 7-
Sliding slot, 8- springs, 9- sprues, 10- recess, 11- tube sockets upper surface, 12- tube sockets lower face, 13- are oriented to tube passage, 14- positioning
Screen work lattice cell, 15- clamping parts, the plug divisions 16-, the angles 17- plug-in unit, the sides 18- plug-in unit, 19- channel cards, the centres 20- plug-in unit, 21-
Plug-in unit, the outer bands of 22-, 23- guide vanes.
Specific implementation mode
A kind of guiding pipe connected pipe of the utility model and upper tube socket are carried out specifically with reference to the accompanying drawings and examples
It is bright.
Embodiment 1
As shown in figure 3, the pipe connected pipe 5 that is oriented in the present embodiment is the hollow cylinder that upper and lower end face opens, internal diameter
Match with 4 outer diameter of guide pipe, is oriented to 5 lower part expanded joint of pipe connected pipe outside guide pipe 4；5 top of pipe connected pipe is oriented to along circle
Circumferential direction is equipped with several protrusions 6.
As shown in figure 4, the upper tube socket 1 in the present embodiment, including holddown spring 8 and tube socket, holddown spring 8 are fixed on tube socket
Top.It needs to connect at the duct inner wall of guide pipe 4 in the tube socket, several sliding slots 7 is set, and the initiating terminal of sliding slot 7 is located at
At the channel openings of tube socket lower face, the endcapped of sliding slot 7 is inside tube socket；Spring 8,8 front of spring is arranged in 7 end of sliding slot
It is connected with sprue 9, sliding slot 7 is equipped with recess 10 below sprue 9；The quantity and width of sliding slot 7 and the protrusion for being oriented to pipe connected pipe 5
6 match.
Lower part expanded joint has the guiding pipe connected pipe 5 of guide pipe 4, protrusion 6 to be inserted into upper tube socket 1 along the sliding slot 7 of upper tube socket 1；
In the process, sprue 9 is first pressed to spring 8 by the protrusion 6 for being oriented to pipe connected pipe 5, is fallen into the recess 10 of 9 lower section of sprue；It
Afterwards, sprue 9 sets back under the action of spring 8, blocks the protrusion 6 fallen at recess 10, realizes guide pipe 4 and upper tube socket
1 is fixedly connected.
Embodiment 2
Guiding pipe connected pipe 5 in the present embodiment is along the circumferential direction uniformly provided with 2 or 3 protrusions 6, the shape of protrusion 6
Can be cuboid or cylinder.
Embodiment 3
A kind of fuel assembly skeleton in the present embodiment, including guide pipe 4, grid spacer, upper tube socket 1 and bottom nozzle, if
Dry root guide pipe 4 is applied in the lattice cell of grid spacer from top to bottom, and the upper end of guide pipe 4 is fixedly connected with upper tube socket 1, is oriented to
The lower end of pipe 4 is fixedly connected with bottom nozzle.The guide pipe 4 and upper tube socket 14 are using guide pipe in any one of the above embodiment
It is connect with upper tube socket connection structure.As shown in Figure 5-Figure 8, the lattice cell 14 of the grid spacer is in four sides cylinder, in lattice cell 14
It is respectively equipped with slot on four faces, includes clamping part 15 and plug division 16, clamping part for coordinating 21 grafting of plug-in unit, plug-in unit 21
15 to 14 inner bulge of lattice cell.
The plug-in unit 10 includes angle plug-in unit 17, side plug-in unit 18, channel card 19 and intermediate plug-in unit 20.Angle plug-in unit 17 includes one
A clamping part 15 and two plug divisions 16, two of which plug division 16 is orthogonal, clamping part 15 be set to two plug divisions 16 it
Between.Side plug-in unit 18 includes two clamping parts 15 and three plug divisions 16, and at T-shaped, clamping part 15 is set respectively for three plug divisions 16
Between each two plug division 16 at position at a right angle.Channel card 19 includes three clamping parts 15 and four plug divisions 16,
Four 16 across of plug division, clamping part 15 are set between each two plug division 16.Intermediate plug-in unit 20 includes four clamping parts
15 and four plug divisions 16, four 16 across of plug division, clamping part 15 is set between each two plug division 16.
Claims (12)
1. a kind of guiding pipe connected pipe, for the hollow cylinder that upper and lower end face opens, internal diameter and guide pipe (4) outer diameter phase
It is external in guide pipe (4) to be oriented to pipe connected pipe (5) lower part expanded joint for matching, it is characterised in that：It is oriented to pipe connected pipe (5) top edge
Circumferencial direction is equipped with several raised (6).
2. guiding pipe connected pipe according to claim 1, it is characterised in that：It is along the circumferential direction equal to be oriented to pipe connected pipe (5)
It is even to be equipped with 2 protrusions (6).
3. guiding pipe connected pipe according to claim 1, it is characterised in that：It is along the circumferential direction equal to be oriented to pipe connected pipe (5)
It is even to be equipped with 3 protrusions (6).
4. guiding pipe connected pipe according to claim 1, it is characterised in that：The protrusion (6) for being oriented to pipe connected pipe (5) is length
Cube shape.
5. guiding pipe connected pipe according to claim 1, it is characterised in that：The protrusion (6) for being oriented to pipe connected pipe (5) is circle
Cylindricality.
6. a kind of upper tube socket, including holddown spring (8) and tube socket, holddown spring (8) is fixed on above tube socket, it is characterised in that：
It needs to connect at the duct inner wall of guide pipe (4) in tube socket, several sliding slots (7) is set, and the initiating terminal of sliding slot (7) is located at tube socket
At the channel openings of lower face, the endcapped of sliding slot (7) is inside tube socket；Spring (8), spring (8) is arranged in sliding slot (7) end
Front is connected with sprue (9), and sliding slot (7) is equipped with recess (10) below sprue (9)；The quantity and width and right of sliding slot (7)
It is required that the protrusion (6) of the guiding pipe connected pipe (5) described in 1 matches.
7. upper tube socket according to claim 6, it is characterised in that：Lower part expanded joint has the guiding pipe connected pipe of guide pipe (4)
(5), raised (6) tube socket (1) in sliding slot (7) insertion of upper tube socket (1)；In the process, it is oriented to the convex of pipe connected pipe (5)
It plays (6) and sprue (9) is first pressed into spring (8), fall into the recess (10) below sprue (9)；Later, sprue (9) is in spring (8)
Under the action of set back, block the protrusion (6) fallen at recess (10).
8. a kind of fuel assembly skeleton, including guide pipe (4), grid spacer, upper tube socket (1) and bottom nozzle, several guide pipes
(4) it is applied in the lattice cell of grid spacer from top to bottom, the upper end of guide pipe (4) is fixedly connected with upper tube socket (1), guide pipe
(4) lower end is fixedly connected with bottom nozzle, it is characterised in that：
The upper tube socket (1) uses the upper tube socket (1) of claim 6 or 7；
Using any one guiding pipe connected pipe connection guide pipe (4) and upper tube socket (1) described in claim 1 to claim 5；
The lattice cell of the grid spacer is in four sides cylinder, upper slot is respectively equipped on four faces of lattice cell, for coordinating plug-in unit
Grafting, plug-in unit include clamping part and plug division.
9. a kind of fuel assembly skeleton according to claim 8, it is characterised in that：The plug-in unit is angle plug-in unit, packet
A clamping part and two plug divisions are included, two of which plug division is orthogonal, and clamping part is set between two plug divisions.
10. a kind of fuel assembly skeleton according to claim 8, it is characterised in that：The plug-in unit is side plug-in unit, packet
Include two clamping parts and three plug divisions, at T-shaped, clamping part is respectively arranged on Cheng Zhi between each two plug division for three plug divisions
At the position at angle.
11. a kind of fuel assembly skeleton according to claim 8, it is characterised in that：The plug-in unit is channel card,
Including three clamping parts and four plug divisions, four plug division across, clamping part is set between each two plug division.
12. a kind of fuel assembly skeleton according to claim 8, it is characterised in that：The plug-in unit is intermediate plug-in unit,
Including four clamping parts and four plug divisions, four plug division across, clamping part is set between each two plug division.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772671.5U CN207731668U (en) | 2017-12-19 | 2017-12-19 | A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772671.5U CN207731668U (en) | 2017-12-19 | 2017-12-19 | A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207731668U true CN207731668U (en) | 2018-08-14 |
Family
ID=63097563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721772671.5U Active CN207731668U (en) | 2017-12-19 | 2017-12-19 | A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207731668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935364A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton |
-
2017
- 2017-12-19 CN CN201721772671.5U patent/CN207731668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935364A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of guiding pipe connected pipe, upper tube socket and fuel assembly skeleton |
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