CN105280247A - Novel automatic-positioning pipe-sleeved-pipe connection structure and assembling method - Google Patents
Novel automatic-positioning pipe-sleeved-pipe connection structure and assembling method Download PDFInfo
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- CN105280247A CN105280247A CN201510663071.4A CN201510663071A CN105280247A CN 105280247 A CN105280247 A CN 105280247A CN 201510663071 A CN201510663071 A CN 201510663071A CN 105280247 A CN105280247 A CN 105280247A
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- pipe
- end plug
- conduit
- slow
- elastic buckle
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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 invention discloses a novel automatic-positioning pipe-sleeved-pipe connection structure and an assembling method thereof. According to the structure, by cooperating an elastic buckle on an end plug of a buffer pipe with a slot on an end plug of a guide pipe, the buffer pipe can be automatically positioned in the guide pipe when being inserted into the guide pipe, and then shrinkage of the elastic buckle is limited by a screw, so that limiting of the elastic buckle on the end plug of the buffer pipe is realized, the buffer-pipe end plug is prevented from being out of the guide-pipe end plug, and finally the expanded connection between the guide pipe and the buffer pipe prevents the relative rotation of the guide pipe and the buffer pipe. The structure realizes automatic positioning of the buffer pipe in the guide pipe, the assembling operation is simplified, and production efficiency is improved.
Description
Technical field
The present invention relates to the syndeton design field of pressurized-water reactor fuel assembly, be specifically related to the syndeton of a kind of outer tube and interior pipe.
Background technology
Pressurised water reactor fuel assemblies is made up of upper and lower ozzle, screen work, cartridge, conduit etc.Wherein, conduit is connected with upper and lower ozzle by the mode being mechanically connected or welding, and conduit is connected with screen work by the mode being mechanically connected or welding, and determines ozzle and the axial location of screen work in fuel assembly by these connections.Cartridge inserts in screen work, by the clamping of screen work, keeps it to locate.Above-mentioned parts constitutes fuel assembly.
In order to realize the controllability of pressurized water reactor fuel reaction, needing to insert fuel assembly by control rod and controlling.Control rod can impact fuel assembly when falling into fuel assembly.In order to avoid this impulsive force is excessive, be provided with snubber assembly in the bottom of conduit, be generally slow pipe.Slow pipe is installed on catheter interior, and lower end is by end plug and tubes connection.Slow bore is less, can produce larger fluid resistance, makes control rod fall to obtaining buffering.The structure of installing slow pipe in this conduit is called pipe-in-pipe structure.
There is the syndeton of pipe-in-pipe at present in the world equally, as the patent CN97198391.7.A " assembly frame for nuclear fuel and manufacture method thereof with conduit " that French FRAMATOME B446Co., Ltd applies for.The pipe-in-pipe connection scheme that this patent proposes, have employed screw and is threaded with slow pipe end plug through conduit end plug, and prevents slow pipe from relatively rotating with conduit by the jaw clutch of slow pipe end plug and conduit end plug.But there is the problem that slow pipe is difficult to locate in the catheter in this design.In order to mounting screw, need slow pipe to locate in the catheter, therefore introduce slow pipe top and be connected with the expanded joint of conduit.But when implementing expanding joint process, slow pipe is not in catheter interior location, and expanded joint position be can not determine.
Summary of the invention
In order to overcome the defect of prior art, the invention discloses a kind of pipe-in-pipe syndeton of novel automatic location.Its concrete technical scheme is as follows:
The invention provides a kind of pipe-in-pipe syndeton, comprise conduit, conduit end plug, slow pipe, slow pipe end plug and screw, catheter end is provided with groove beyond the Great Wall, and slow pipe end is provided with Elastic buckle beyond the Great Wall, Elastic buckle is set to match with groove, and slow pipe is located in catheter interior; Screw restriction Elastic buckle inwardly shrinks, and prevents slow pipe end plug from deviating from from conduit end plug; The conduit pipe that eases up carries out expanded joint by distortion connection, prevents relatively rotating of conduit and slow pipe.
Further, catheter end beyond the Great Wall portion is provided with the first step for assembling conduit and is convenient to the transition section of conduit insertion, and catheter end jam-pack is fixed on bottom nozzle; Conduit end plug inside is provided with the section of being threaded, groove and transitional pore, and wherein the section of being threaded is set to be connected with screw, and groove and resilient snap fitment are located, and transitional pore is for inserting Elastic buckle.
Further, the Elastic buckle that slow pipe end is arranged beyond the Great Wall is no less than two.
Further, Elastic buckle, for having flexible schistose texture, comprises buckle and elastic webbing body.Buckle is provided with limiting platform and chamfering, wherein limiting platform inserts in the groove of conduit end plug, and the slow pipe end plug of restriction is deviate from from conduit.
Further, screw comprises boss, thread segment and spacing section, and wherein boss connects bottom nozzle and conduit end plug, and thread segment matches with the section of being threaded of conduit end plug, and spacing section is set to match with Elastic buckle, limits buckle and inwardly shrinks.The external diameter of spacing section is less than the internal diameter of buckle.
Further, slow pipe and conduit carry out expanded joint in the position away from bottom nozzle by distortion connection.
Present invention also offers another kind of pipe-in-pipe syndeton, comprise conduit, conduit end plug, slow pipe, slow pipe end plug and screw, it is characterized in that, catheter end is provided with Elastic buckle beyond the Great Wall, slow pipe end is provided with groove beyond the Great Wall, Elastic buckle is set to match with groove, and slow pipe is located in catheter interior; Screw restriction Elastic buckle inwardly shrinks, and prevents slow pipe end plug from deviating from from conduit end plug; The conduit pipe that eases up carries out expanded joint by distortion connection, prevents relatively rotating of conduit and slow pipe.
Present invention also offers a kind of assemble method of pipe-in-pipe syndeton, comprise the following steps:
The first step, is assembled conduit by the mode of welding with conduit end plug, the mode of slow Guan Yuhuan pipe end plug by welding is assembled;
Second step, will delay Guan Yuhuan pipe end plug and insert in conduit, slow pipe end plug and conduit end plug are connected by Elastic buckle and groove, will delay pipe location in the catheter;
3rd step, is connected on bottom nozzle by conduit end plug, and screw, through the screw hole on bottom nozzle, is connected with the thread segment of conduit end plug, makes catheter end jam-pack be fixed on bottom nozzle; Spacing section of screw enters in the Elastic buckle of slow pipe end plug, and restriction buckle inwardly shrinks;
4th step, carries out expanded joint in the position away from bottom nozzle by distortion connection by slow pipe and conduit.
The present invention utilizes and is positioned at cooperatively interacting of slow pipe end plug and catheter end Elastic buckle beyond the Great Wall and groove, achieves slow pipe and inserts Postductal automatic location, be convenient to assemble, improve production efficiency; Utilize slow pipe in the catheter automatically behind location, by the threaded engagement of screw and conduit end plug, achieve conduit and the location of slow pipe on bottom nozzle.And utilizing spacing section on screw, the slow pipe of restriction is deviate from from conduit; Utilize slow pipe in the catheter automatically behind location, connected by distortion, prevent relatively rotating of slow pipe and conduit, carrying effect is provided simultaneously.
Below with reference to accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 shows the syndeton schematic diagram of conduit and slow pipe in the present invention's preferred embodiment;
Fig. 2 shows the structural representation of conduit end plug in the present invention's preferred embodiment, and wherein Fig. 2 a is the front view of conduit end plug, and Fig. 2 b is the cut-open view of conduit end plug;
Fig. 3 shows the structural representation of slow pipe end plug in the present invention's preferred embodiment, and wherein Fig. 3 a is the front view of slow pipe end plug, and Fig. 3 b is the stereographic map of slow pipe end plug, and Fig. 3 c is the cut-open view of slow pipe end plug;
Fig. 4 shows the structural representation of the present invention's preferred embodiment Elastic buckle;
Fig. 5 shows the structural representation of screw in the present invention's preferred embodiment;
Fig. 6 shows the syndeton schematic diagram of conduit and slow pipe in another preferred embodiment of the present invention;
Wherein
1-conduit 2-conduit end plug 3-delays pipe 4-and delays spacing section of the pipe end plug 5-screw 6-bottom nozzle 7-distortion connection 21-first step 22-First Transition section 23-section of being threaded 24-groove 25-transitional pore 41-second step 42-second transition section 43-Elastic buckle 431-buckle 432-elastic webbing body 433-limiting platform 434-chamfering 51-boss 52-thread segment 53-.
Embodiment
Below by way of specific embodiment, technical scheme of the present invention is further described.Following embodiment further illustrates of the present invention, instead of limit the scope of the invention.
Embodiment 1:
As shown in Figure 1, the syndeton of some embodiments in the present invention, is made up of conduit 1, conduit end plug 2, slow pipe 3, slow pipe end plug 4, screw 5, bottom nozzle 6.
Conduit 1 is straight tube, and internal diameter is about 10mm ~ 12mm, and external diameter is about 11mm ~ 14mm.Conduit end plug 2 is corynebacterium, and length is about 16mm ~ 25mm.Outside surface devises first step 21 for coordinating with conduit 1, and conduit 1 can be connected with conduit end plug 2 by welding manner.Devise First Transition section 22, angle is about 3 ~ 10 °, and length is about 2 ~ 5mm simultaneously.First Transition section 22 is convenient to conduit 1 and is inserted conduit end plug 2.Conduit end plug 2 center drilling, lower end devises the section of being threaded 23, and can be M5 or M6 screw thread, length be about 8 ~ 12mm, for being connected with screw 5.Offer groove 24 above the section of being threaded 23, groove 24 length is about 2 ~ 3mm, and diameter is about 7 ~ 9mm.Buckle 431 on slow pipe end plug 4 can enter groove 24, and limiting platform 433 coordinates with the upper surface of groove 24, and conduit end plug 2 deviate from by the slow pipe end plug 4 of restriction.Be transitional pore 25 above groove 24, the diameter 1 ~ 1.5mm less of groove 24 of transitional pore 25, and be consistent with the external diameter of the elastic webbing body 432 on slow pipe end plug 4, prevent the radial direction of slow pipe end plug 4 from rocking.The length of transitional pore 25 is about 6 ~ 8mm, and is consistent with the length of the elastic webbing body 432 of slow pipe end plug 4, prevents the axis of slow pipe end plug 4 from rocking.Chamfering is carried out in conduit end plug 2 upper surface, is convenient to conduit 1 and inserts.
Slow pipe 3 is straight tube, inserts in conduit 1, and therefore the external diameter of slow pipe 3 is less than the internal diameter of conduit 1, and the external diameter of slow pipe 3 is about 9 ~ 12mm, and internal diameter is about 8 ~ 11mm.Slow pipe end plug 4 is mainly divided into two parts, and top is the end plug part be connected with slow pipe 3, and bottom is the Elastic buckle 43 be connected with conduit end plug 2.The end plug part of slow pipe end plug 4 is similar to conduit end plug 2, and length is about 5mm ~ 7mm.Outside surface devises second step 41 for coordinating with slow pipe 3, and slow pipe 3 can be connected with slow pipe end plug 4 by welding manner.Devise the second transition section 42, angle is about 3 ~ 10 °, and length is about 1 ~ 2mm simultaneously.Second transition section 42 is convenient to slow pipe 3 and is inserted slow pipe end plug 4.Slow pipe end plug 4 center drilling, aperture is about 1 ~ 2mm.The Elastic buckle 43 of slow pipe end plug 4 bottom at least comprises 2 and has flexible spline-like formations, and this spline-like formations is made up of elastic webbing body 432 and buckle 431 two parts.Elastic webbing body 432 needs to coordinate with the transitional pore 25 in conduit end plug 2, and elastic webbing body 432 is for having the band of radian, and its external diameter is consistent with the aperture of transitional pore 25.The length of elastic webbing body 432 is consistent with transitional pore length.The thickness of elastic webbing body 432 is about 0.5 ~ 1.5mm.The head of elastic webbing body 432 is buckle 431, and buckle 431 coordinates with groove 24.The head of buckle 431 offers chamfering 434, is convenient to buckle 431 and inserts transitional pore 25, and afterbody is limiting platform 433.Hooked the upper plane of card groove 24 by limiting platform 433, thus the slow pipe end plug 4 of restriction is deviate from from conduit end plug 2.
Screw 5 is mainly divided into three parts: boss 51, thread segment 52, spacing section 53.Boss 51 external diameter is about 10 ~ 12mm, and length is about 7 ~ 10mm, coordinates with the counterbore of bottom nozzle 6.Thread segment 52 coordinates with the section of being threaded 23 of conduit end plug 2, and be M5 or M6 screw thread, length is about 10 ~ 14mm, is threaded connection and conduit end plug 2 and bottom nozzle 6 is coupled together.Coordinate with the Elastic buckle 43 of slow pipe end plug 4 for spacing section 53, spacing section of 53 external diameters are less than the internal diameter of buckle 431, are about 3 ~ 5mm.Length is about 3 ~ 5mm.After screw 5 and conduit end plug 2 are tightened, spacing section 53 Elastic buckle 43 entering slow pipe end plug 4 is inner, and restriction buckle 431 inwardly shrinks.
The assemble method of the present embodiment is: conduit 1 is assembled by the mode of welding with conduit end plug 2, and slow pipe 3 is assembled by the mode of welding with slow pipe end plug 4.Then insert in conduit 1 by slow pipe 3 with slow pipe end plug 4, slow pipe end plug 4 is connected by Elastic buckle 43 and groove 24 with conduit end plug 2, is positioned in conduit 1 by slow pipe 3.Then be seated on bottom nozzle 6 by conduit end plug 2, screw 5, through the screw hole on bottom nozzle 6, is connected with the thread segment 23 of conduit end plug 2, conduit end plug 2 is anchored on bottom nozzle 6.Spacing section 53 of screw 5 enters in the Elastic buckle 43 of slow pipe end plug 4 simultaneously, and restriction buckle 431 inwardly shrinks, and prevents Elastic buckle 43 from deviating from, thus ensures the slow location of pipe 3 in conduit 1.Finally carry out expanded joint on the top of slow pipe 3 and conduit 1 by distortion connection 7.Prevent slow pipe 3 from relatively rotating with conduit 1, play carrying effect simultaneously.
Embodiment 2
For realizing object of the present invention, also following syndeton can be adopted.
As shown in Figure 6, this syndeton is similar to embodiment 1, and difference is that Elastic buckle 43 is arranged on conduit end plug 2, and groove 24 is arranged on slow pipe end plug 4.Assembling process, is welded to connect conduit 1 and conduit end plug 2, and slow pipe 3 is welded to connect with slow pipe end plug 4.Then insert in conduit 1 by slow pipe 3, the Elastic buckle 43 on slow pipe end plug 4 compression tube end plug 2, makes it inwardly shrink, in the groove 24 in the slow pipe end plug 4 of press-in.After buckle 431 enters groove 24, Elastic buckle 43 recovers shape.Again screw 5 is screwed into conduit end plug 2.Screw 5 is consistent M5 or the M6 screw of external diameter, and after being screwed into conduit end plug 2, its head arrives buckle 431 position, and restriction Elastic buckle 43 inwardly shrinks, and prevents slow pipe end plug 4 from deviating from conduit end plug 2.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of this area just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. a pipe-in-pipe syndeton, comprise conduit, conduit end plug, slow pipe, slow pipe end plug and screw, it is characterized in that, described catheter end is provided with groove beyond the Great Wall, described slow pipe end is provided with Elastic buckle beyond the Great Wall, described Elastic buckle is set to match with described groove, and described slow pipe is located in described catheter interior; Described screw limits described Elastic buckle and inwardly shrinks, and prevents described slow pipe end plug from deviating from from described conduit end plug; Described conduit and described slow pipe carry out expanded joint by distortion connection, prevent relatively rotating of described conduit and described slow pipe.
2. pipe-in-pipe syndeton according to claim 1, is characterized in that, described catheter end beyond the Great Wall portion is provided with the first step for assembling described conduit and is convenient to the transition section of described conduit insertion, and described catheter end jam-pack is fixed on bottom nozzle; Described conduit end plug inside is provided with the section of being threaded, described groove and transitional pore, and the wherein said section of being threaded is set to be connected with described screw, and described groove and described resilient snap fitment are located, and described transitional pore is for inserting described Elastic buckle.
3. pipe-in-pipe syndeton according to claim 1, is characterized in that, the described Elastic buckle that described slow pipe end is arranged beyond the Great Wall is no less than two.
4. pipe-in-pipe syndeton according to claim 1, is characterized in that, described Elastic buckle, for having flexible schistose texture, comprises buckle and elastic webbing body.
5. pipe-in-pipe syndeton according to claim 4, is characterized in that, described buckle is provided with limiting platform and chamfering, and wherein said limiting platform inserts in the described groove of described conduit end plug, limits described slow pipe end plug and deviates from from described conduit.
6. pipe-in-pipe syndeton according to claim 1, it is characterized in that, described screw comprises boss, thread segment and spacing section, wherein said boss connects bottom nozzle and described conduit end plug, described thread segment matches with the section of being threaded described in described conduit end plug, described spacing section is set to match with described Elastic buckle, and restriction buckle inwardly shrinks.
7. pipe-in-pipe syndeton according to claim 6, is characterized in that, the external diameter of described spacing section is less than the internal diameter of described buckle.
8. pipe-in-pipe syndeton according to claim 1, is characterized in that, described slow pipe and described conduit carry out expanded joint in the position away from bottom nozzle by distortion connection.
9. a pipe-in-pipe syndeton, comprise conduit, conduit end plug, slow pipe, slow pipe end plug and screw, it is characterized in that, described catheter end is provided with Elastic buckle beyond the Great Wall, described slow pipe end is provided with groove beyond the Great Wall, described Elastic buckle is set to match with described groove, and described slow pipe is located in described catheter interior; Described screw limits described Elastic buckle and inwardly shrinks, and prevents described slow pipe end plug from deviating from from described conduit end plug; Described conduit and described slow pipe carry out expanded joint by distortion connection, prevent relatively rotating of described conduit and described slow pipe.
10. an assemble method for pipe-in-pipe syndeton according to claim 1, is characterized in that, comprise the following steps:
The first step, is assembled conduit by the mode of welding with conduit end plug, the mode of slow Guan Yuhuan pipe end plug by welding is assembled;
Second step, insert in described conduit by described slow pipe and described slow pipe end plug, described slow pipe end plug and described conduit end plug are connected by Elastic buckle and groove, are positioned in described conduit by described slow pipe;
3rd step, is connected on bottom nozzle by described conduit end plug, and screw, through the screw hole on described bottom nozzle, is connected with the thread segment of described conduit end plug, makes described catheter end jam-pack be fixed on bottom nozzle; Spacing section of described screw enters in the described Elastic buckle of described slow pipe end plug, and restriction buckle inwardly shrinks;
4th step, carries out expanded joint in the position away from bottom nozzle by distortion connection by described slow pipe and described conduit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663071.4A CN105280247B (en) | 2015-10-14 | 2015-10-14 | A kind of new the pipe sleeve pipe connecting structure being automatically positioned and assemble method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510663071.4A CN105280247B (en) | 2015-10-14 | 2015-10-14 | A kind of new the pipe sleeve pipe connecting structure being automatically positioned and assemble method |
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| CN105280247A true CN105280247A (en) | 2016-01-27 |
| CN105280247B CN105280247B (en) | 2018-02-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828000A (en) * | 2019-10-18 | 2020-02-21 | 广东核电合营有限公司 | Foreign matter prevention grid, lower pipe seat assembly and fuel assembly |
| CN113192656A (en) * | 2021-03-26 | 2021-07-30 | 中广核研究院有限公司 | Spring buckle type end plug, fuel rod and axial positioning structure of end plug |
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| JPS53141885A (en) * | 1977-05-16 | 1978-12-11 | Toshiba Corp | Nuclear fuel assembly |
| US4837419A (en) * | 1988-06-02 | 1989-06-06 | Westinghouse Electric Corp. | Fuel rod end plug welding apparatus and method |
| US5030414A (en) * | 1988-01-07 | 1991-07-09 | Kabushiki Kaisha Toshiba | Nuclear fuel rod |
| CN1232571A (en) * | 1996-09-30 | 1999-10-20 | 弗拉马托梅股份公司 | Assembly frame for nuclear fuel with guide tubes and for mfg. same |
| CN205016251U (en) * | 2015-10-14 | 2016-02-03 | 上海核工程研究设计院 | Novel pipe bushing structure of automatic positioning |
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2015
- 2015-10-14 CN CN201510663071.4A patent/CN105280247B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2063945A1 (en) * | 1969-10-08 | 1971-07-16 | Commissariat Energie Atomique | Aperture sealing allowing access to aperture walls |
| JPS53141885A (en) * | 1977-05-16 | 1978-12-11 | Toshiba Corp | Nuclear fuel assembly |
| US5030414A (en) * | 1988-01-07 | 1991-07-09 | Kabushiki Kaisha Toshiba | Nuclear fuel rod |
| US4837419A (en) * | 1988-06-02 | 1989-06-06 | Westinghouse Electric Corp. | Fuel rod end plug welding apparatus and method |
| CN1232571A (en) * | 1996-09-30 | 1999-10-20 | 弗拉马托梅股份公司 | Assembly frame for nuclear fuel with guide tubes and for mfg. same |
| CN205016251U (en) * | 2015-10-14 | 2016-02-03 | 上海核工程研究设计院 | Novel pipe bushing structure of automatic positioning |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828000A (en) * | 2019-10-18 | 2020-02-21 | 广东核电合营有限公司 | Foreign matter prevention grid, lower pipe seat assembly and fuel assembly |
| CN110828000B (en) * | 2019-10-18 | 2021-11-09 | 广东核电合营有限公司 | Foreign matter prevention grid, lower pipe seat assembly and fuel assembly |
| CN113192656A (en) * | 2021-03-26 | 2021-07-30 | 中广核研究院有限公司 | Spring buckle type end plug, fuel rod and axial positioning structure of end plug |
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| CN105280247B (en) | 2018-02-02 |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: Shanghai Nuclear Engineering Research & Design Institute |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |