CN101882474A - Rapid detachable joint - Google Patents
Rapid detachable joint Download PDFInfo
- Publication number
- CN101882474A CN101882474A CN2010101714443A CN201010171444A CN101882474A CN 101882474 A CN101882474 A CN 101882474A CN 2010101714443 A CN2010101714443 A CN 2010101714443A CN 201010171444 A CN201010171444 A CN 201010171444A CN 101882474 A CN101882474 A CN 101882474A
- Authority
- CN
- China
- Prior art keywords
- retaining ring
- joint
- positioning
- hook
- locking hook
- 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
Images
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
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to a rapid detachable joint, which is formed by a locking ring, an upper pipe seat and a joint. The locking ring is a columnar hollow structure. The lower end of the locking ring is provided with an inward convex ring step which is integrated with the lower end part of the locking ring. Two symmetrically distributed through grooves are arranged at the step. Two symmetrically distributed tool grooves are arranged at the upper end part in a direction perpendicular to the connecting line of the through grooves at the lower end. Two symmetrically distributed positioning and locking claws which outward protrude along the radial direction of the locking ring are arranged at the upper end part of the locking ring. The positioning and locking claws are adjustable structure which can be retracted and expanded along the radial direction of the locking ring. After the upper pipe seat and the joint are assembled with the locking ring, the assembly parts are prevented from rotating circumferentially or move up and down along the axial direction. The invention has the advantages that the structural design is simple, the requirements on rapid disassembling and rapid installation can be satisfied, the disassembling and the re-installation are rapid, simple and convenient, the parts do not get loose after the pipe seat is disassembled, and the disassembling and the re-installation are more reliable.
Description
Technical field
The present invention relates to a kind of quick detachable joint.
Background technology
At present base adopts the removable base of going up on the AFA-3G fuel assembly, and it can reasonably carry out the assembly reparation in the time, removes replaceable burst slug rod behind the base.But dismounting and multiple dress operation all are difficult for, and have following problems: 1, go up base and always can not pull down from assembly easily, therefore need heavier aid to provide enough big external force to dismantle base; When 2, dismantling, produce loose piece, as AFA-3G assembly telescope-srew, be careful when dismounting and refitting operation and avoid this part to drop, thereby bring more servicing time, therefore, the design that does not contain loose piece is just more competitive; 3, dismounting and refitting operation are not very reliable, because the telescope-srew of AFA-3G assembly and the material of base are stainless steel, its shirt rim and base gap are very little, may cause telescope-srew to kill during dismounting; It is stubborn not in place also may to produce telescope-srew during refitting, thereby causes this fuel assembly not re-use.
Existing its structure of a kind of demountable structure is divided into two parts: telescope-srew and expanded joint pipe.Behind expanded joint pipe and the guide pipe expanded joint, last base is sitting on the supporting surface of 24 expanded joint pipes, and the thread segment of telescope-srew is screwed into behind the expanded joint pipe and last base expanded joint, and guide pipe is realized being connected with last base.Its shortcoming is: a, because telescope-srew and last base expanded joint, and during base, can only adopt destructiveness to dismantle in the dismounting, telescope-srew can not be multiplexing, and produced loose mail; B, replacing telescope-srew need the long handle instrument to carry out underwater operation, have big difficulty; The operation of c, telescope-srew and last base is more difficult.
Summary of the invention
Technical matters to be solved by this invention provides a kind of more reliable quick detachable joint of requirement, dismounting and refitting that satisfies fast quick-detach and installation.
The present invention addresses the above problem the technical scheme that is adopted: a kind of quick detachable joint, this quick detachable joint is made of following assembly: retaining ring, retaining ring is the column hollow structure, its lower end has the step of the circular ring structure of the convex that is structure as a whole with the bottom, the step place has the groove of two symmetrical distributions, the upper end is at the well that has two symmetrical distributions perpendicular to lower end groove line direction, the retaining ring upper end also have two symmetrical distributions along the retaining ring positioning and locking hook of evagination radially, this positioning and locking hook is radially collapsible along retaining ring, the adjustable structure of distending; Last base, should go up the mounting hole that is used to install retaining ring that base has column hollow, the mounting hole lower end has the step of the circular ring structure of the convex that is structure as a whole with the bottom, the step place has the groove of two symmetrical distributions, two the groove directions in corresponding step lower end have the retaining ring mounting groove of two indents at the mounting hole inside surface, have the hook positioning pit of two symmetrical distributions perpendicular to retaining ring mounting groove line direction, the inwall on mounting hole top has an annular and is used for the sliding tray that the positioning and locking hook rotates in a circumferential direction, the lower surface of this sliding tray and hook positioning pit is in same plane, and the distance of the upper surface of base mounting hole lower end step is consistent with the retaining ring height on this plane separation; Joint, the joint internal diameter satisfies control rod and inserts, the guide pipe expanded joint or the welding of its underpart and control rod, upper end of joint is provided with convex shoulder, convex shoulder top is provided with two-layer glossal canal, formation is positioned at a pair of lug of convex shoulder top and a pair of protruding tongue of lug top, and lug, protruding tongue all are symmetrically distributed and its circumferential size unanimity, the spacing of length that lug, protruding tongue protrude and lug, protruding tongue respectively with the length and the consistency of thickness of the convex of retaining ring lower step.
The quick detachable joint operating process and the principle of this programme design: the retaining ring material of this programme adopts the rubber-like stainless steel material to make, during installation, at first retaining ring is inserted the mounting hole of going up base, the positioning and locking hook is in place in the retaining ring mounting groove is held concurrently the hook positioning pit, with instrument retaining ring is rotated 90 ° then, positioning and locking hook lug is slided along the hook sliding tray and be located in the hook positioning pit, this moment, the retaining ring lower surface contacted with step upper surface in the last base mounting hole, it is in place then the joint glossal canal to be aimed at upward base retaining ring mounting hole lower end gap (groove) back insertion, this moment, the lug adjacent with the joint convex shoulder was stuck in the gap (groove) of base mounting hole lower end step, to prevent that joint is relative to going up rotating of base retaining ring mounting hole, and then with instrument rotation lock ring, retaining ring positioning and locking hook is slided along the hook sliding tray and return back to the retaining ring mounting groove position in the hook positioning pit of holding concurrently by position in the hook positioning pit, retaining ring lower end step has inserted between the two-layer glossal canal of joint in this process, at last with joint and guide pipe chucking, making the joint convex shoulder withstand base mounting hole lower surface has thus prevented to scurry on the guide pipe, the joint lug is stuck in and has prevented in the gap of base mounting hole lower end step that guide pipe is relative to going up rotating of base mounting hole, retaining ring lower end step lower surface is located in base mounting hole lower end step upper surface and inserts and prevented between the joint glossal canal that guide pipe breaks away from upward base mounting hole, thereby reaches the purpose of locking.During dismounting, retaining ring positioning and locking hook lug slided along the hook sliding tray and by the retaining ring mounting groove position half-twist position to the hook positioning pit of holding concurrently in the hook positioning pit, the retaining ring step breaks away from the joint glossal canal, cancelled the downward axial constraint of joint, last base can withdraw from easily, lug is located in the hook positioning pit during this state, retaining ring still is subjected to axial constraint, so retaining ring can not drop out from last base mounting hole, because two positioning and locking hooks have certain rigidity, with regard to single positioning and locking hook, when tool using rotational lock ring, act on the positioning and locking hook head boss arc surface along circumferential revolving force, the positioning and locking hook can radially bend and break away from the hook positioning pit and enter sliding tray; After cancelling power, the positioning and locking hook keeps bending, unless hook head boss enters the hook positioning pit once more, the positioning and locking hook just can return to original shape and lock this position, so generally to two positioning and locking hooks, in elastic range, can realize the action of contraction, distending on the radial direction, retaining ring can go up the rotation of base mounting hole relatively when the positioning and locking hook shrank, the circumferential position relative fixed of retaining ring and last base mounting hole during the hook distending, thereby the circumferential location of realizing retaining ring.Because sliding tray is arranged, hook can not break away from from mounting hole when releasing orientation and slip.This programme described consistent be meant the length of each parts correspondence, highly, thickness etc. equates or its fitting surface tight of coupling back just is installed.
The structure of described retaining ring stationary positioned locking hook is radian and the consistent list structure of retaining ring sidewall radian, has the gap of axially open between this list structure top and the sidewall, and bottom and sidewall are structure as a whole.This structure make the positioning and locking hook along retaining ring radially can shrink, the adjusting of distending is more easy.
The structure of described retaining ring stationary positioned locking hook is an arcuate structure, have between this arcuate structure and the sidewall along the gap of retaining ring circumferential openings, arcuate structure one end is the stiff end that is fixed in the retaining ring upper end or is structure as a whole with the retaining ring upper end, the other end is a free end, and described positioning and locking hook is fixed in free end or is structure as a whole with free end.When the arc list structure is two or more, the free-ended opening direction of its camber line should be consistent, the quick detachable joint of this scheme at first inserts retaining ring when mounted and goes up in the base, the positioning and locking hook is in place in the retaining ring mounting groove is held concurrently the hook positioning pit, with instrument retaining ring is rotated counterclockwise 90 ° (promptly with the circumferencial direction rotation of arc list structure from the free end to the stiff end then, obviously, the arc list structure from stiff end to free-ended direction for all can clockwise or counterclockwise, as long as it is opposite in the time of when mounted) with its direction, make positioning and locking hook lug (lug promptly outer male structure) along the slip of hook sliding tray and be located in the hook positioning pit, this moment, the retaining ring lower surface contacted with last base mounting hole lower end step upper surface, in place with inserting behind the gap of the last base mounting hole lower end of joint glossal canal aligning, this moment, the glossal canal adjacent with the joint convex shoulder was stuck in the gap of base mounting hole lower end step, to prevent that joint is relative to going up rotating of base mounting hole, and then retaining ring is rotated counterclockwise 90 ° with instrument, retaining ring positioning and locking hook lug is slided along the hook sliding tray and return back to the retaining ring mounting groove position in the hook positioning pit of holding concurrently by position in the hook positioning pit, retaining ring lower end step has inserted between the two-layer glossal canal of joint in this process, at last with joint and guide pipe chucking, making the joint convex shoulder withstand base mounting hole lower surface has thus prevented to scurry on the guide pipe, the glossal canal of joint convex shoulder is stuck in and has prevented in the gap of base mounting hole lower end step that guide pipe is relative to going up rotating of base mounting hole, retaining ring lower end step lower surface is located in base mounting hole lower end step upper surface and inserts and prevented between the joint glossal canal that guide pipe breaks away from upward base mounting hole, thereby reaches the purpose of locking; During dismounting, retaining ring positioning and locking hook lug slided along the hook sliding tray and hold concurrently and be rotated counterclockwise 90 ° to the hook positioning pit in the hook positioning pit by the retaining ring mounting groove, the retaining ring step breaks away from the joint glossal canal, cancelled the downward axial constraint of joint, last base can withdraw from easily, lug is located in the hook positioning pit during this state, retaining ring still is subjected to axial constraint, so retaining ring can not drop out from last base mounting hole, because 2 positioning and locking hooks have certain rigidity, with regard to single hook, when tool using rotational lock ring, revolving force along circumferential direction acts on the hook head boss arc surface, and hook can radially bend and break away from the hook positioning pit and enter sliding tray; After cancelling power, hook keeps bending, unless hook head boss enters the hook positioning pit once more, just hook can return to original shape and lock this position.So generally to 2 hooks, in elastic range, can realize the action of contraction, distending on the radial direction, retaining ring can go up the rotation of base mounting hole relatively when hook shrank, the circumferential position relative fixed of retaining ring and last base mounting hole during the hook distending, thereby the circumferential location of realizing retaining ring.Because sliding tray is arranged, hook can not break away from from mounting hole when releasing orientation and slip.
Described positioning and locking hook is an arcuate structure, described retaining ring mounting groove, hook positioning pit and positioning and locking hook male part separation structure coupling.This structure be convenient to when dismounting tool using the positioning and locking hook is shifted out from the rotation of hook positioning pit.
Described retaining ring is made by the rubber-like stainless steel material.
Described arc list structure reduces to free-ended curvature gradually from stiff end.
To sum up, the invention has the beneficial effects as follows: this quick detachable joint design proposal is simple in structure, can satisfy the requirement of fast quick-detach and installation, and dismounting and refitting operation are fast and convenient, the no loose piece in base dismounting back, and dismounting and refitting are more reliable.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1 retaining ring;
Fig. 2 is that the C-C of Fig. 1 is to view;
Fig. 3 is that the A-A of Fig. 2 is to view;
Fig. 4 is the stereographic map of Fig. 1;
The structural representation of base in Fig. 5 the present invention;
Fig. 6 is the C-C line cut-open view of Fig. 5;
Fig. 7 is the stereographic map of Fig. 5;
Fig. 8 is the structural representation of joint of the present invention;
Fig. 9 is that the C-C of Fig. 8 is to view;
Figure 10 is the structural representation of the embodiment of the invention 2 retaining rings;
Figure 11 is the structural representation after the quick detachable joint assembling of the present invention.
Embodiment
Embodiment 1:
Referring to figs. 1 through Fig. 9, shown in Figure 11, the quick detachable joint that is used for nuclear fuel assembly of the present invention is made of retaining ring 1, last base 3 and joint 2.Retaining ring 1 is the column hollow structure, its lower end has the step 7 of the circular ring structure of the convex that is structure as a whole with the bottom, step 7 places have the groove 8 of two symmetrical distributions, the upper end is at the well 6 that has two symmetrical distributions perpendicular to lower end groove line direction, retaining ring 1 upper end also have two symmetrical distributions along the retaining ring 1 positioning and locking hook 4 of evagination radially, the position of retaining ring 1 stationary positioned locking hook 4 is the radian list structure 23 consistent with retaining ring sidewall radian, be provided with end play between these list structure 23 tops and the sidewall 5 and constitute well 6, bottom and sidewall are structure as a whole, and this positioning and locking hook 4 is for radially can shrink along retaining ring 1, the adjustable structure of distending (retaining ring is made by the rubber-like stainless steel material); Last base 3 has the mounting hole that is used to install retaining ring 1 of column hollow, the mounting hole lower end has the step 10 of the circular ring structure of the convex that is structure as a whole with the bottom, step 10 places have the groove 9 of two symmetrical distributions, two groove 9 directions in corresponding step 10 lower ends have the retaining ring mounting groove 12 of two indents at the mounting hole inside surface, the mounting hole inside surface has the hook positioning pit 21 of the indent formation of two symmetrical distributions perpendicular to retaining ring mounting groove line direction, the inwall on mounting hole top has an annular and is used for the sliding tray 11 that positioning and locking hook 4 rotates in a circumferential direction, this sliding tray 11 is in same plane with the lower surface of hook positioning pit 21, and the distance of the upper surface of base 3 mounting hole lower end steps 10 is consistent with the height of retaining ring 1 on this plane separation; Joint 2 internal diameters satisfy control rod and insert, the guide pipe expanded joint or the welding of its underpart and control rod, joint 2 upper ends are provided with convex shoulder 13, convex shoulder 13 tops are provided with two-layer glossal canal, formation is positioned at a pair of lug 14 of convex shoulder top and a pair of protruding tongue 15 of lug 14 tops, lug 14, protruding tongue 15 all are symmetrically distributed and its circumferential size unanimity, the spacing of length that lug 14, protruding tongue 15 protrudes and lug, protruding tongue respectively with the length and the consistency of thickness of retaining ring 1 lower step 7 convexes.
The last base of present embodiment is made by the AISI304L material, and retaining ring is made by the GH4169 material, and joint is made by the AISI316L material.
Embodiment 2:
Extremely shown in Figure 11 referring to Fig. 5, the quick detachable joint of nuclear fuel assembly that is used for of the present invention is by retaining ring 1, last base 3 and joint 2 constitute, it is identical with the structure of record among the embodiment 1 with joint 2 wherein to go up base 3, retaining ring 1 upper end of present embodiment has arcuate structure, this arcuate structure one end is the stiff end 16 that is fixed in the retaining ring upper end or is structure as a whole with the retaining ring upper end, the other end is a free end 17, have between arcuate structure and the sidewall along the gap of retaining ring circumferential openings, arc structure reduces to free-ended curvature gradually from stiff end, along retaining ring 1 radially the positioning and locking hook 18 of evagination to be fixed in free end 17 terminal or be structure as a whole with free end 17, the positioning and locking hook is an arcuate structure, the retaining ring mounting groove, hook positioning pit and positioning and locking hook male part separation structure coupling, these retaining ring 1 other each several part structures are identical with the structure of record among the embodiment 1, wherein 19 is steps, the 20th, the retaining ring mounting groove, the 22nd, be used for the sliding tray that positioning and locking hook 18 rotates in a circumferential direction, the 24th, the hook positioning pit.
Claims (6)
1. a quick detachable joint is characterized in that, this quick detachable joint is made of following assembly:
Retaining ring, retaining ring is the column hollow structure, its lower end has the step of the circular ring structure of the convex that is structure as a whole with the bottom, the step place has the groove of two symmetrical distributions, the upper end is at the well that has two symmetrical distributions perpendicular to lower end groove line direction, the retaining ring upper end also have two symmetrical distributions along the retaining ring positioning and locking hook of evagination radially, this positioning and locking hook is an adjustable structure radially collapsible along retaining ring, distending;
Last base, should go up the mounting hole that is used to install retaining ring that base has column hollow, the mounting hole lower end has the step of the circular ring structure of the convex that is structure as a whole with the bottom, the step place has the groove of two symmetrical distributions, two the groove directions in corresponding step lower end have the retaining ring mounting groove of two indents at the mounting hole inside surface, have the hook positioning pit of two symmetrical distributions perpendicular to retaining ring mounting groove line direction, the inwall on mounting hole top has an annular and is used for the sliding tray that the positioning and locking hook rotates in a circumferential direction, the lower surface of this sliding tray and hook positioning pit is in same plane, and the distance of the upper surface of base mounting hole lower end step is consistent with the retaining ring height on this plane separation;
Joint, the joint internal diameter satisfies control rod and inserts, the guide pipe expanded joint or the welding of its underpart and control rod, upper end of joint is provided with convex shoulder, convex shoulder top is provided with two-layer glossal canal, formation is positioned at a pair of lug of convex shoulder top and a pair of protruding tongue of lug top, and lug, protruding tongue all are symmetrically distributed and its circumferential size unanimity, the spacing of length that lug, protruding tongue protrude and lug, protruding tongue respectively with the length and the consistency of thickness of the convex of retaining ring lower step.
2. the quick detachable joint that is used for nuclear fuel assembly according to claim 1, it is characterized in that, the structure of described retaining ring stationary positioned locking hook is radian and the consistent list structure of retaining ring sidewall radian, have the gap of axially open between this list structure top and the sidewall, bottom and sidewall are structure as a whole.
3. the quick detachable joint that is used for nuclear fuel assembly according to claim 1, it is characterized in that, the structure of described retaining ring stationary positioned locking hook is an arcuate structure, have between this arcuate structure and the sidewall along the gap of retaining ring circumferential openings, arcuate structure one end is the stiff end that is fixed in the retaining ring upper end or is structure as a whole with the retaining ring upper end, the other end is a free end, and described positioning and locking hook is fixed in free end or is structure as a whole with free end.
4. the quick detachable joint that is used for nuclear fuel assembly according to claim 3 is characterized in that described arcuate structure reduces to free-ended curvature gradually from stiff end.
5. the quick detachable joint that is used for nuclear fuel assembly according to claim 3 is characterized in that, described positioning and locking hook is an arcuate structure, described retaining ring mounting groove, hook positioning pit and positioning and locking hook male part separation structure coupling.
6. according to any described quick detachable joint that is used for nuclear fuel assembly of claim 1 to 5, it is characterized in that described retaining ring is made by the rubber-like stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714443A CN101882474A (en) | 2010-05-12 | 2010-05-12 | Rapid detachable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714443A CN101882474A (en) | 2010-05-12 | 2010-05-12 | Rapid detachable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101882474A true CN101882474A (en) | 2010-11-10 |
Family
ID=43054460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101714443A Pending CN101882474A (en) | 2010-05-12 | 2010-05-12 | Rapid detachable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101882474A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928059A (en) * | 2013-01-14 | 2014-07-16 | 上海核工程研究设计院 | Rotary detachable guide pipe-upper pipe seat connecting piece |
| CN104575629A (en) * | 2014-12-05 | 2015-04-29 | 上海核工程研究设计院 | Detachable upper pipe seat and guide pipe connecting structure |
| CN106531233A (en) * | 2016-12-29 | 2017-03-22 | 中国科学院合肥物质科学研究院 | Reactor fuel assembly |
| CN107068208A (en) * | 2017-02-27 | 2017-08-18 | 中国核动力研究设计院 | Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly |
| CN115691849A (en) * | 2022-09-27 | 2023-02-03 | 四川大学 | Thread simplified type quick detachable connection device and method |
| CN116580859A (en) * | 2023-06-13 | 2023-08-11 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
-
2010
- 2010-05-12 CN CN2010101714443A patent/CN101882474A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928059A (en) * | 2013-01-14 | 2014-07-16 | 上海核工程研究设计院 | Rotary detachable guide pipe-upper pipe seat connecting piece |
| CN104575629A (en) * | 2014-12-05 | 2015-04-29 | 上海核工程研究设计院 | Detachable upper pipe seat and guide pipe connecting structure |
| CN106531233A (en) * | 2016-12-29 | 2017-03-22 | 中国科学院合肥物质科学研究院 | Reactor fuel assembly |
| CN107068208A (en) * | 2017-02-27 | 2017-08-18 | 中国核动力研究设计院 | Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly |
| CN115691849A (en) * | 2022-09-27 | 2023-02-03 | 四川大学 | Thread simplified type quick detachable connection device and method |
| CN115691849B (en) * | 2022-09-27 | 2023-07-21 | 四川大学 | Screw thread simplified type quick detachable connection device and method |
| US11828324B1 (en) | 2022-09-27 | 2023-11-28 | Sichuan University | Quick-detachable connecting device with simplified thread structure and connection method using same |
| CN116580859A (en) * | 2023-06-13 | 2023-08-11 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
| CN116580859B (en) * | 2023-06-13 | 2024-03-05 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101727993B (en) | Quick detachable joint of nuclear fuel assembly | |
| CN101882474A (en) | Rapid detachable joint | |
| EP2940362B1 (en) | Bell and spigot type pipe joint, mounting and dismounting methods thereof, mounting clamp and dismounting tool | |
| CN202273956U (en) | Locking pin column | |
| EP3608576B1 (en) | New type of rapid pipe joint | |
| EP2899362A3 (en) | Shoulder ring installation tools | |
| CN201673688U (en) | Quick detachable joint | |
| CN201992240U (en) | Quick coupling | |
| CN201280030Y (en) | Draw tool for wheel bolt cap | |
| US20230400046A1 (en) | Quick-detachable connecting device with simplified thread structure and connection method using same | |
| CN201519423U (en) | Improved barbell rod structure | |
| CN218785780U (en) | Quick change mechanism of bottle blowing machine bed die | |
| US9715946B2 (en) | BWR nuclear fuel assembly with snap-in sleeve spring | |
| US8485560B2 (en) | Welding spacer | |
| CN202832272U (en) | Sheet type centralizer convenient to replace | |
| CN104176912B (en) | A kind of easily detachable graphite bearing mounting structure | |
| CN203070779U (en) | Rotary detachable guide pipe-upper pipe seat connecting piece | |
| CN209239092U (en) | Chuck with a locking mechanism | |
| CN210147932U (en) | Socket spanner | |
| CN212620955U (en) | Water meter cover | |
| CN104444974A (en) | Intertube interlocking device of single-lead-screw mechanical lifting rod | |
| CN206673271U (en) | Boundling female radio frequency (RF) coaxial connector | |
| CN210757482U (en) | Ejector shaft device and shaft body locking mechanism thereof | |
| CN204533089U (en) | A kind of end locking device of circular pipe fitting | |
| CN201494250U (en) | Large-sized wheel rim structure of mining equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Yiteng Water Purification Equipment Research and Development Center Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101110 |