CN218118291U - Nuclear-grade high-temperature-resistant bolt assembly - Google Patents
Nuclear-grade high-temperature-resistant bolt assembly Download PDFInfo
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- CN218118291U CN218118291U CN202222303291.4U CN202222303291U CN218118291U CN 218118291 U CN218118291 U CN 218118291U CN 202222303291 U CN202222303291 U CN 202222303291U CN 218118291 U CN218118291 U CN 218118291U
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Abstract
The utility model relates to a nuclear electrode bolt technical field just discloses a nuclear-grade high temperature resistant bolt subassembly, this nuclear-grade high temperature resistant bolt subassembly, including bolt head, first screw rod and nut, the bolt head is installed on first screw rod, the nut is installed on first screw rod, the bolt head is established to hexagonal shape; a first twill is arranged on one side of the head of the bolt, a second twill is arranged on one side of the nut, a locking ring piece is mounted on the first screw, and third twills are arranged on two sides of the locking ring piece; the anti-loosening ring piece comprises a first fixing portion and a second expanding portion, a through hole is formed in the center of the first fixing portion, internal teeth are installed on the inner wall of the through hole, and the internal teeth are in a flower shape. The utility model discloses a laminating on first twill, second twill, third twill and internal tooth enhancement and connecting piece surface strengthens frictional force, reduces the condition that rocks after connecting piece and bolt assembly connect.
Description
Technical Field
The utility model relates to a nuclear electrode bolt technical field specifically is a nuclear power level high temperature resistant bolt assembly.
Background
Nuclear electrode batteries belong to the radioactive battery, also called radioisotope thermoelectric generators. The thermoelectric generator is formed by connecting a plurality of semiconductor materials with excellent performance, such as bismuth telluride, lead telluride, germanium-silicon alloy, selenium compounds and the like in series. In addition, a suitable heat source and transducer are provided, and the temperature difference between the heat source and the transducer is formed to generate electricity.
The fasteners are used in a large number in safety systems and equipment of nuclear power plants, bear the functions of pressure-bearing sealing, part connection, support fixing and the like, and have important effects on the nuclear safety functions of the safety systems and the equipment of the nuclear power plants in quality and performance. However, found in the process of supervision and management of construction and equipment manufacturing in nuclear power plants, weak links exist in the aspects of design, purchase, manufacture, installation, acceptance and the like of the fasteners, the bolt assembly comprises a bolt rod and a nut, the nut can be loosened frequently when used as a connecting piece, and particularly in the field of nuclear electrode equipment, the loosening can occur, so that the conditions of electric power damage and energy consumption can be caused, and therefore, the nuclear-grade high-temperature-resistant bolt assembly needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nuclear power level high temperature resistant bolt assembly possesses the connection fastening, reduces not hard up and rusty dead beneficial effect, has solved the nut often can appear not hard up problem for the connecting piece time that mentions among the above-mentioned background art, especially in the nuclear electrode equipment field, appears not hard up, can cause the problem of the impaired, energy consumption's the condition.
The utility model provides a following technical scheme: a nuclear power grade high temperature resistant bolt assembly comprises a bolt head, a first screw rod and a nut, wherein the bolt head is installed on the first screw rod, the nut is installed on the first screw rod, and the bolt head is in a hexagonal shape;
one side of the bolt head is provided with a first twill, one side of the nut is provided with a second twill, the first screw is provided with a locking ring piece, and both sides of the locking ring piece are provided with third twills;
the anti-loosening ring piece comprises a first fixing portion and a second expanding portion, a through hole is formed in the center of the first fixing portion, internal teeth are installed on the inner wall of the through hole, and the internal teeth are in a flower shape.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: a cavity and a second fastener are arranged in the bolt head, and the second fastener is arranged in the cavity.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: the second fastener comprises a second screw and a limiting head, the limiting head is installed inside the cavity, and the second screw is sleeved inside the first screw.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: the bolt head is provided with a cover plate in a threaded manner, and the cover plate is provided with a compression spring;
one end of the compression spring is connected with the limiting head, and the other end of the compression spring is connected with the surface of the cover plate.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: be equipped with the bleeder vent on the apron, the bleeder vent is provided with a plurality of.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: the nut is provided with a first thread section with opposite rotation directions along the screwing direction of the first screw;
a fastening ring is arranged on the first screw rod, and a second thread section with opposite rotation directions is arranged on the fastening ring along the screwing-in direction of the first screw rod;
the fastening ring is used for fastening the joint of the first screw and the second screw and is conical.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: the first twill and the second twill are formed by a plurality of rib parts, and the outer peripheral surface of the bolt head is formed into an irregular shape.
As an alternative of nuclear power level high temperature resistant bolt assembly, wherein: the first fixing portion is of an elastic structure made of rubber.
The utility model discloses possess following beneficial effect:
1. this nuclear power level high temperature resistant bolt assembly, through install locking ring piece in bolt head and first screw rod, first fixed part is used for elastic fixation in the locking ring piece, internal tooth and bolt head and bolt assembly in expanding the portion through the second need fixed connecting piece to fix, the internal tooth increases the frictional force with the connecting piece, the flower shape of internal tooth can increase the friction surface, and then make and connect inseparable effect, bolt often can appear not hard up problem when reducing as the connecting piece, connection fastening nature has been improved.
2. According to the nuclear-grade high-temperature-resistant bolt assembly, the length of the bolt assembly is lengthened through the second screw rod sleeved in the first screw rod, the first screw rod is fixed through the nut in a threaded manner, the joint of the first screw rod and the second screw rod is fixed through the second fastener and the fastening ring in a threaded manner, the situation that the bolt assembly is loosened and falls off due to vibration and abrasion of a device body during use is reduced, the fastening ring is used for reinforcing and fixing, and the fastening rigidity of the bolt assembly is improved;
through compression spring and second screw rod elastic connection, when bolt assembly probably vibrates along with the device body during the use, the buffering is to bolt assembly's vibration intensity, dismantles through the apron of twisting the bolt head and twisting the tight loop when dismantling, and is very convenient, reduces the long-term circumstances of using the corrosion of bolt assembly.
3. This nuclear power level high temperature resistant bolt assembly through a plurality of bleeder vent on the apron, reduces thermal gathering, improves high temperature resistant effect to a certain extent, and bolt assembly adopts heat conduction copper product matter, improves high temperature resistance.
Drawings
Fig. 1 is a schematic side view of the structure of the present invention.
Fig. 2 is a schematic structural sectional view of the present invention.
Fig. 3 is a front view of the anti-loosening ring piece structure of the present invention.
Fig. 4 is a schematic front view of the cover plate structure of the present invention.
In the figure: 1. a bolt head; 2. a first screw; 3. a nut; 4. a first twill; 5. a second twill; 6. a locking ring sheet; 7. a third twill; 8. a first fixed part; 9. a second enlarged portion; 10. a through hole; 11. internal teeth; 12. a cavity; 13. a second fastener; 14. a compression spring; 15. a cover plate; 16. air holes are formed; 17. a first thread segment; 18. a fastening ring; 19. a second thread segment; 20. a second screw; 21. a head part is limited.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The fasteners are used in a large number of safety systems and equipment of the nuclear power plant, bear the functions of pressure-bearing sealing, part connection, supporting and fixing and the like, and have important effects on the nuclear power plant safety systems and equipment to execute nuclear safety functions. However, in the process of monitoring the construction and equipment manufacturing of a nuclear power plant, weak links exist in the aspects of design, purchasing, manufacturing, installation, acceptance and the like of the fastener, the bolt assembly comprises a bolt rod and a nut, the nut is often loosened when used as a connecting piece, and particularly in the field of nuclear electrode equipment, the loosening is caused, so that the conditions of electric power damage and energy consumption are caused, and therefore, the nuclear-grade high-temperature-resistant bolt assembly needs to be provided.
The utility model provides a following technical scheme: referring to fig. 1-4, a nuclear-grade high-temperature-resistant bolt assembly includes a bolt head 1, a first screw 2 and a nut 3, wherein the bolt head 1 is mounted on the first screw 2, the nut 3 is mounted on the first screw 2, and the bolt head 1 is hexagonal;
one side of the bolt head 1 is provided with a first twill 4, one side of the nut 3 is provided with a second twill 5, the first screw 2 is provided with a locking ring piece 6, and both sides of the locking ring piece 6 are provided with third twills 7;
the anti-loosening ring piece 6 comprises a first fixing part 8 and a second expanding part 9, a through hole 10 is formed in the center of the first fixing part 8, inner teeth 11 are mounted on the inner wall of the through hole 10, and the inner teeth 11 are in a flower shape;
the first fixing portion 8 is provided as an elastic structure made of rubber.
Through installing locking ring piece 6 in bolt head 1 and first screw rod 2, first fixed part 8 is used for elastic fixation in locking ring piece 6, internal tooth 11 and bolt head 1 and bolt assembly in the second enlargement portion 9 need fixed connecting piece to be fixed, internal tooth 11 increases the frictional force with the connecting piece, the friction surface can be increaseed to the flower shape of internal tooth 11, and then make and connect inseparable effect, bolt often can appear not hard up problem when reducing as the connecting piece, connection fastening nature has been improved.
The first twill 4 and the second twill 5 are both formed by a plurality of rib parts, and the outer peripheral surface of the bolt head 1 is formed into an irregular shape.
Strengthen the laminating with the connecting piece surface through first twill 4, second twill 5 and third twill 7, strengthen frictional force, reduce the condition that the connecting piece rocked after connecting.
Example 2
This embodiment is an improved description made on the basis of embodiment 1, and specifically, refer to fig. 1 to 4, in which: the bolt head 1 is provided with a cavity 12 and a second fastening piece 13, and the second fastening piece 13 is arranged in the cavity 12.
The second fastening piece 13 comprises a second threaded rod 20 and a limiting head 21, the limiting head 21 is installed inside the cavity 12, and the second threaded rod 20 is sleeved inside the first threaded rod 2.
Wherein: a cover plate 15 is arranged on the bolt head 1 through threads, and a compression spring 14 is arranged on the cover plate 15;
one end of the compression spring 14 is connected with the limiting head 21, and the other end of the compression spring 14 is connected with the surface of the cover plate 15;
the nut 3 is provided with a first thread section 17 with opposite rotation directions along the screwing direction of the first screw rod 2;
a fastening ring 18 is arranged on the first screw rod 2, and a second thread section 19 with opposite rotation directions is arranged on the fastening ring 18 along the screwing-in direction of the first screw rod 2;
the fastening ring 18 is used for fastening the joint of the first screw rod 2 and the second screw rod 20, and the fastening ring 18 is conical;
the length of the bolt assembly is lengthened through the second screw 20 sleeved in the first screw 2, the first screw 2 is in threaded fixation through the nut 3, the joint of the first screw 2 and the second screw 20 is in threaded fixation through the second fastener 13 and the fastening ring 18, the situation that the bolt assembly is loosened and falls due to vibration and abrasion of a device body during use is reduced, the fastening ring 18 is used for reinforcing fixation, and the fastening rigidity of the bolt assembly is improved;
through compression spring 14 and second screw 20 elastic connection, when the bolt assembly probably shakes thereupon during the use device body, the vibration intensity of buffering to bolt assembly is dismantled through the apron 1 of twisting the bolt head and twisting tight loop 18 when dismantling, and is very convenient, reduces the bolt assembly and uses the circumstances of rustting for a long time.
Example 3
This embodiment is an improved description made on the basis of embodiment 1, specifically, please refer to fig. 1-4, in which: the cover plate 15 is provided with a plurality of air holes 16, and the air holes 16 are arranged.
Through a plurality of bleeder vent 16 on the apron 15, reduce thermal gathering, improve high temperature resistance's effect to a certain extent, and bolt assembly adopts heat conduction copper product matter, improves high temperature resistance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a nuclear power level high temperature resistant bolt subassembly, includes bolt head (1), first screw rod (2) and nut (3), its characterized in that: the bolt head (1) is arranged on the first screw rod (2), the nut (3) is arranged on the first screw rod (2), and the bolt head (1) is in a hexagonal shape;
a first twill (4) is arranged on one side of the bolt head (1), a second twill (5) is arranged on one side of the nut (3), a locking ring piece (6) is mounted on the first screw (2), and third inclined threads (7) are arranged on two sides of the locking ring piece (6);
locking ring piece (6) include first fixed part (8) and second expansion portion (9), through-hole (10) have been seted up at first fixed part (8) center, internal tooth (11) are installed to the inner wall of through-hole (10), internal tooth (11) set up to the flower shape.
2. The nuclear-grade high-temperature-resistant bolt assembly of claim 1, characterized in that: a cavity (12) and a second fastening piece (13) are arranged in the bolt head (1), and the second fastening piece (13) is arranged in the cavity (12).
3. The nuclear-grade high-temperature-resistant bolt assembly of claim 2, wherein: the second fastener (13) comprises a second screw rod (20) and a limiting head (21), the limiting head (21) is installed inside the cavity (12), and the second screw rod (20) is sleeved inside the first screw rod (2).
4. The nuclear-grade high-temperature-resistant bolt assembly of claim 2, wherein: a cover plate (15) is installed on the bolt head (1) in a threaded mode, and a compression spring (14) is arranged on the cover plate (15);
one end of the compression spring (14) is connected with the limiting head (21), and the other end of the compression spring (14) is connected with the surface of the cover plate (15).
5. The nuclear-grade high-temperature-resistant bolt assembly of claim 4, wherein: the cover plate (15) is provided with air holes (16), and the air holes (16) are provided with a plurality of air holes.
6. The nuclear-grade high-temperature-resistant bolt assembly of claim 1, wherein: a first thread section (17) with opposite rotation directions is arranged on the nut (3) along the screwing-in direction of the first screw (2);
a fastening ring (18) is mounted on the first screw (2), and a second thread section (19) with opposite rotation directions is arranged on the fastening ring (18) along the screwing-in direction of the first screw (2);
the fastening ring (18) is used for fastening the joint of the first screw (2) and the second screw (20), and the fastening ring (18) is conical.
7. The nuclear-grade high-temperature-resistant bolt assembly of claim 1, wherein: first twill (4) and second twill (5) all constitute through a plurality of bead portion.
8. The nuclear-grade high-temperature-resistant bolt assembly of claim 1, wherein: the first fixing part (8) is of an elastic structure made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222303291.4U CN218118291U (en) | 2022-08-31 | 2022-08-31 | Nuclear-grade high-temperature-resistant bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222303291.4U CN218118291U (en) | 2022-08-31 | 2022-08-31 | Nuclear-grade high-temperature-resistant bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218118291U true CN218118291U (en) | 2022-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222303291.4U Active CN218118291U (en) | 2022-08-31 | 2022-08-31 | Nuclear-grade high-temperature-resistant bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218118291U (en) |
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2022
- 2022-08-31 CN CN202222303291.4U patent/CN218118291U/en active Active
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