CN215414148U - Guide device for friction force test of reactor internals - Google Patents
Guide device for friction force test of reactor internals Download PDFInfo
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- CN215414148U CN215414148U CN202121721659.8U CN202121721659U CN215414148U CN 215414148 U CN215414148 U CN 215414148U CN 202121721659 U CN202121721659 U CN 202121721659U CN 215414148 U CN215414148 U CN 215414148U
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Abstract
The utility model provides a guiding device for a friction force test of an in-pile component, which relates to the technical field of equipment for a friction force test of a control rod guide cylinder and comprises a flange plate, a guide sleeve, a pressure spring and a locking mechanism, wherein the flange plate is provided with a through groove, the upper part of the flange plate is provided with a boss, the bottom of the guide sleeve is provided with a support, the locking mechanism comprises a frame body and a spring, the bottom of the support is provided with a positioning pin, the boss is provided with a positioning hole, the boss is internally provided with a guide groove communicated with the positioning hole, the support is arranged on the boss, the guide sleeve and the through groove are coaxially arranged, the positioning pin is inserted into the positioning hole and penetrates through the guide groove, and the frame body is movably clamped in the guide groove and is sleeved outside the positioning pin. In the whole replacement process of the guide sleeve, the replacement operation is very convenient and fast, and the flange plate does not need to be detached from the control rod guide cylinder, so that the operation flow is greatly simplified, the replacement time is shortened, and the inspection efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of friction force test equipment, in particular to the technical field of control rod guide cylinder friction force test equipment.
Background
The reactor internals are one of the most critical core devices in the nuclear power platform nuclear reactor, are the heart of the nuclear reactor, and comprise all structural components except a fuel assembly and related assemblies thereof, an in-reactor measuring instrument and an irradiation sample monitoring tube in a reactor pressure vessel. The control rod guide cylinder assembly is one of the most core assemblies of the reactor internals and is formed by precisely assembling and precisely welding precise stainless steel parts, and mainly has the important functions of guiding the control rods to perform nuclear reaction starting, stopping, power adjustment and the like. The nuclear power platform control rod guide cylinder assembly is made of austenitic stainless steel and mainly comprises a double-hole pipe, a C-shaped pipe, a guide grid plate, a half square pipe, a fixed flange, a cover plate, a split pin and the like. The control rod guide cylinder assembly is internally welded by a double-hole pipe assembly and a C-shaped pipe to form a continuous guide structure body, guide grid plates are arranged at other positions in the control rod guide cylinder assembly at intervals along the height direction, and the control rod guide cylinder assembly is externally welded and coated by a half square pipe and a supporting flange.
In the in-service inspection process of nuclear reactor internals equipment, the smoothness of a control rod drive wire needs to be inspected, and specifically, a friction force test (a pull-in force test) is carried out on a control rod guide cylinder assembly of the reactor internals. In the friction force test of the control rod guide cylinder assembly, the precision inspection gauge needs to be lifted from the bottom to the top at a constant speed, and the friction force borne by the inspection gauge in the whole test process is evaluated. In the inspection process of labour, in order to send into the control rod guide cylinder with the inspection gauge from the upper end of control rod guide cylinder in, need arrange the guide device at the upper end of control rod guide cylinder, in the inspection process of labour, often need to change the inspection gauge of different specifications and test, however traditional guide device can only adapt to the inspection gauge of single specification, when the inspection gauge of different specifications needs to be changed is tested, need pull down original guide device from the control rod guide cylinder, change new guide device, guide device generally is connected with the control rod guide cylinder through the bolt, consequently, it is very troublesome to dismantle the change operation, waste time and energy, staff intensity of labour is big, inspection efficiency has seriously been reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a guide device for a friction force test of an in-pile member, which solves the problems that in the prior art, the operation of replacing and disassembling a guide device of an inspection gauge is troublesome, the inspection efficiency is low, and the labor intensity of workers is high.
The technical scheme of the utility model is realized as follows:
a guiding device for a friction test of an in-pile component comprises a flange plate, a guide sleeve, a pressure spring and a locking mechanism, wherein a through groove is formed in the flange plate, a boss is arranged on the upper portion of the flange plate, a support is arranged at the bottom of the guide sleeve, the locking mechanism comprises a frame body and a spring, a positioning pin is arranged at the bottom of the support, a positioning hole is formed in the boss, a guide groove communicated with the positioning hole is formed in the boss, the support is arranged on the boss, the guide sleeve and the through groove are coaxially arranged, the positioning pin is inserted into the positioning hole and penetrates through the guide groove, the frame body is movably clamped in the guide groove and sleeved outside the positioning pin, a locking groove is formed in the positioning pin, a wedge block is arranged on the frame body and clamped in the locking groove, a through hole communicated with the guide groove is formed in the boss, a support rod is arranged on the frame body, the support rod penetrates out of the through hole, a limiting block is arranged on the support rod outside the boss, the spring housing is arranged outside the supporting rod, two end parts of the spring are respectively abutted against the boss and the limiting block, a groove is formed in the boss, the pressure spring is located in the groove, the lower end part of the pressure spring is fixedly arranged on the bottom surface of the groove, the upper end part of the pressure spring is abutted against the bottom surface of the support, and the inner wall of the through groove of the flange plate is provided with a positioning claw extending downwards.
Further, the lower end of the pressure spring is welded and fixed with the bottom surface of the boss groove.
Furthermore, an inclined plane is arranged on the inner wall of the upper part of the guide sleeve.
Furthermore, the number of the locking mechanisms is two, and the locking mechanisms are symmetrically distributed along the axial lead of the guide sleeve.
Furthermore, bolt holes are formed in the flange plate.
The utility model adopts the technical proposal to achieve the following beneficial effects:
1. when the guiding device for the friction force test of the internals is used, the flange plate is fixedly connected with the upper end of the control rod guide cylinder, the flange plate and the upper end of the control rod guide cylinder are coaxially positioned through the positioning claw and the control rod guide cylinder, the inspection gauge is clamped into the guide sleeve from top to bottom, the guide sleeve can play a good role in guiding the inspection gauge, the inspection gauge can accurately and quickly enter the control rod guide cylinder, manual adjustment and intervention are not needed, then the smooth inspection of a control rod drive wire can be carried out, and the in-service inspection of the internals of the nuclear reaction system can be smoothly carried out.
2. When the inspection gauges with different specifications need to be replaced, the guide sleeve matched with the inspection gauge is replaced, and the replacement operation steps of the guide sleeve are as follows: the limiting blocks of the two groups of locking mechanisms are pressed respectively, the frame body is driven to move along the guide grooves through the supporting rods, the wedge-shaped blocks are made to exit from the locking grooves, then under the elastic action of the pressure spring, the guide sleeve is jacked upwards for a certain distance, then the guide sleeve can be detached from the boss of the flange plate, the guide sleeve is detached, then the guide sleeve of another specification is inserted into the positioning hole through the positioning pin, the wedge-shaped blocks are locked, and installation of the guide sleeve is completed. In the whole replacement process of the guide sleeve, the replacement operation is very convenient and fast, and the flange plate does not need to be detached from the control rod guide cylinder, so that the operation flow is greatly simplified, the replacement time is shortened, the inspection efficiency is improved, and the labor intensity of workers is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a top view of the present invention of FIG. 2;
fig. 5 is a schematic view of the present invention in use.
In the drawings, the parts corresponding to the reference numerals are as follows:
1-flange plate, 2-guide sleeve, 3-pressure spring, 4-through groove, 5-boss, 6-support, 7-groove, 8-frame, 9-spring, 10-positioning pin, 11-positioning hole, 12-guide groove, 13-locking groove, 14-wedge block, 15-through hole, 16-support rod, 17-limiting block, 18-positioning claw, 19-inclined plane, 20-bolt hole, 21-inspection gauge and 22-avoidance groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 4, the guiding device for the friction force test of the reactor internals comprises a flange plate 1, a guide sleeve 2, a pressure spring 3 and a locking mechanism, wherein a through groove 4 is formed in the flange plate 1, a positioning claw 18 extending downwards is arranged on the inner wall of the through groove 4 in the flange plate 1, a boss 5 is arranged on the upper portion of the flange plate 1, a bolt hole 20 is formed in the flange plate 1, and a support 6 is arranged at the bottom of the guide sleeve 2. Referring to fig. 3, the locking mechanism includes a frame 8 and a spring 9, a positioning pin 10 is disposed at the bottom of the support 6, a positioning hole 11 is disposed on the boss 5, a guide groove 12 communicated with the positioning hole 11 is disposed in the boss 5, the support 6 is disposed on the boss 5, the guide sleeve 2 is disposed coaxially with the through groove 4, an inclined surface 19 is disposed on an inner wall of an upper portion of the guide sleeve 2, the positioning pin 10 of the support 6 is inserted into the positioning hole 11 and inserted into the guide groove 12, the frame 8 is movably clamped in the guide groove 12 and sleeved outside the positioning pin 10, a locking groove 13 is disposed on the positioning pin 10, a wedge block 14 is disposed on the frame 8, the wedge block 14 is clamped in the locking groove 13, a through hole 15 communicated with the guide groove 12 is further disposed on the boss 5, a support rod 16 is disposed on the frame 8, the support rod 16 penetrates out of the through hole 15, a stopper 17 is disposed on the support rod 16 outside the boss 5, the spring 9 is sleeved outside the supporting rod 16, two end portions of the spring 9 are respectively abutted against the boss 5 and the limiting block 17, the boss 5 is provided with a groove 7, the pressure spring 3 is located in the groove 7 of the boss 5, the lower end portion of the pressure spring 3 is fixedly installed on the bottom surface of the groove 7 in a welding mode, the upper end portion of the pressure spring is abutted against the bottom surface of the support 6, the number of the locking mechanisms is two, and the locking mechanisms are symmetrically distributed along the axial lead of the guide sleeve 2.
When the guiding device for the friction test of the internals is used, a connecting piece such as a bolt penetrates through a bolt hole 20 of a flange plate 1, the flange plate 1 is fixedly connected with the upper end of a control rod guide cylinder, the guiding device for the friction test of the internals is fixedly arranged at the upper end part of the control rod guide cylinder, a positioning claw 18 is clamped in a double-hole pipe assembly of the control rod guide cylinder to realize the coaxial positioning of the guiding device for the friction test of the internals and the control rod guide cylinder, then, referring to figure 5, a check gauge 21 is clamped in a guide sleeve 2 from top to bottom, an avoiding groove 22 for avoiding the positioning claw 18 is arranged on the check gauge 21, the guide sleeve 2 can play a good guiding role on the check gauge 21, so that the check gauge 21 can accurately and rapidly enter the control rod guide cylinder without manual adjustment intervention, and then drive line smoothness check (namely, the friction test of the control rod guide cylinder assembly) can be carried out, and performing in-service inspection of the reactor internals of the nuclear reaction system. When the inspection gauge 21 with different specifications needs to be replaced, the guide sleeve 2 matched with the inspection gauge 21 is replaced, and the replacement operation steps of the guide sleeve 2 are as follows: press down two sets of locking mechanical system's stopper 17 respectively, drive framework 8 through branch 16 and remove along guide way 12, make wedge 14 withdraw from in the locked groove 13, then under the spring action of pressure spring 3, one section distance with uide bushing 2 jack-up, can pull down uide bushing 2 from the boss 5 of flange board 1 after that, accomplish the dismantlement of uide bushing 2, insert the uide bushing 2 of another specification in locating hole 11 through locating pin 10 after that, and lock through wedge 14, accomplish the installation of uide bushing 2. In the whole replacement process of the guide sleeve 2, the replacement operation is very convenient and fast, and the flange plate 1 is not required to be detached from the control rod guide cylinder, so that the operation flow is greatly simplified, the replacement time is shortened, the inspection efficiency is improved, and the labor intensity of workers is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The guiding device for the friction force test of the in-pile member is characterized by comprising a flange plate (1), a guiding sleeve (2), a pressure spring (3) and a locking mechanism, wherein a through groove (4) is formed in the flange plate (1), a boss (5) is arranged on the upper portion of the flange plate (1), a support (6) is arranged at the bottom of the guiding sleeve (2), the locking mechanism comprises a frame body (8) and a spring (9), a positioning pin (10) is arranged at the bottom of the support (6), a positioning hole (11) is formed in the boss (5), a guiding groove (12) communicated with the positioning hole (11) is formed in the boss (5), the support (6) is arranged on the boss (5), the guiding sleeve (2) and the through groove (4) are coaxially arranged, the positioning pin (10) is inserted in the positioning hole (11) and penetrates through the guiding groove (12), the frame body (8) is movably clamped in the guiding groove (12), and is sleeved outside the positioning pin (10), a locking groove (13) is arranged on the positioning pin (10), a wedge-shaped block (14) is arranged on the frame body (8), the wedge-shaped block (14) is clamped in the locking groove (13), a through hole (15) communicated with the guide groove (12) is arranged on the boss (5), a support rod (16) is arranged on the frame body (8), the support rod (16) penetrates out of the through hole (15), a limit block (17) is arranged on the support rod (16) positioned outside the boss (5), a spring (9) is sleeved outside the support rod (16), two end parts of the spring (9) respectively abut against the boss (5) and the limit block (17), a groove (7) is arranged on the boss (5), the pressure spring (3) is positioned in the groove (7), the lower end part of the pressure spring (3) is fixedly arranged on the bottom surface of the groove (7), and the upper end part abuts against the bottom surface of the support seat (6), and a positioning claw (18) extending downwards is arranged on the inner wall of the through groove (4) of the flange plate (1).
2. The in-pile member friction force test guiding device as claimed in claim 1, wherein the lower end part of the pressure spring (3) is welded and fixed with the bottom surface of the groove (7) of the boss (5).
3. The internals friction test guide device according to claim 1, wherein an inclined surface (19) is provided on the inner wall of the upper part of the guide sleeve (2).
4. The guide device for testing the friction force of the internals according to claim 1, wherein the number of the locking mechanisms is two, and the locking mechanisms are symmetrically distributed along the axial lead of the guide sleeve (2).
5. The guide device for testing the friction force of the internals according to claim 1, wherein the flange plate (1) is provided with bolt holes (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121721659.8U CN215414148U (en) | 2021-07-27 | 2021-07-27 | Guide device for friction force test of reactor internals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121721659.8U CN215414148U (en) | 2021-07-27 | 2021-07-27 | Guide device for friction force test of reactor internals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215414148U true CN215414148U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121721659.8U Active CN215414148U (en) | 2021-07-27 | 2021-07-27 | Guide device for friction force test of reactor internals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215414148U (en) |
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2021
- 2021-07-27 CN CN202121721659.8U patent/CN215414148U/en active Active
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