CN218161759U

CN218161759U - Expansion joint structure for high-safety transmission line for nuclear power station

Info

Publication number: CN218161759U
Application number: CN202222154494.1U
Authority: CN
Inventors: 高勇; 孙庆勇
Original assignee: Jiangsu Dalicheng Electrical Co ltd
Current assignee: Jiangsu Dalicheng Electrical Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-27
Anticipated expiration: 2032-08-16

Abstract

The utility model relates to an expansion joint structure field just discloses an expansion joint structure for high security power transmission line for nuclear power station, and the effectual bellows intensity of having solved on the present expansion joint is lower, in the use, easily causes the problem that the bellows damaged, including the bellows, mounting flange is installed to the top and the bottom symmetry of bellows, installs coupling assembling between two mounting flange, and coupling assembling includes the first fixed block of waiting the angle to install in the mounting flange outside, is equipped with the connecting block between two upper and lower first fixed blocks, the utility model discloses, rotate through the screw rod and drive fixed commentaries on classics piece and rotate to make the stay cord winding in the outside of fixed commentaries on classics piece, make the stay cord tighten up, drive each connecting block this moment and remove towards protective sheath one side, make the dwang at connecting block both ends outwards rotate, thereby drive two mounting flange and keep away from each other, thereby conveniently carry out length adjustment to the bellows.

Description

Expansion joint structure for high-safety transmission line for nuclear power station

Technical Field

The utility model belongs to expansion joint structure field specifically is a nuclear power station is with expansion joint structure for high security transmission line.

Background

According to the application publication number: CN112928712A, entitled "a combined cable tray for conveniently adjusting internal space", describes in the specification: synchronous regulation formula expansion joint, including first flange, second flange, bellows, three threaded rod and adjusting part, first flange and second flange week side all are fixed with three journal stirrup, first through-hole and second through-hole have been seted up on the journal stirrup on first flange and the second flange respectively, threaded rod one end week side is fixed in first through-hole through a set of nut, still has following defect:

the bellows is the main equipment of expansion joint, and because the bellows has ductility to make bellows intensity lower, thereby make the bellows fragile, thereby influence the life of equipment.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a nuclear power station is with expansion joint structure for high security transmission line, the effectual bellows intensity of having solved on the present expansion joint is lower, in the use, easily causes the problem that the bellows damaged.

In order to achieve the above purpose, the utility model provides a following technical scheme: an expansion joint structure for a high-safety transmission line for a nuclear power station comprises a corrugated pipe, wherein fixed flanges are symmetrically arranged at the top end and the bottom end of the corrugated pipe, and a connecting assembly is arranged between the two fixed flanges;

coupling assembling includes the first fixed block of equal angular installation in the mounting flange outside, is equipped with the connecting block between two upper and lower first fixed blocks, and the top and the equal symmetry in bottom of connecting block rotate and be connected with the dwang, and the one end and the first fixed block of dwang rotate to be connected, and first rope hole has been seted up to the inside of connecting block, and the internally mounted in first rope hole on a plurality of dwangs has the stay cord, and adjusting part is installed in the outside of stay cord.

Preferably, one side that the connecting block is close to the bellows is equipped with the protective sheath, and the protective sheath cup joints in the outside of bellows, and the sleeve is installed to angle such as the outside of protective sheath, and telescopic inside movable mounting has the connecting rod, the one end and the connecting block fixed connection of connecting rod, and the connecting rod is close to one side of protective sheath and installs the spring, the one end and the protective sheath fixed connection of spring.

Preferably, the adjusting part is including installing in the bracing piece of protective sheath one side, and the holding ring is installed to the one end of bracing piece, and the inside rotation joint of holding ring has fixed commentaries on classics piece.

Preferably, a second rope hole is formed in the fixed rotating block, and the pull rope is inserted into the second rope hole.

Preferably, a movable groove is formed in the fixed rotating block and located above the second rope hole, and the movable block is connected to the inner portion of the movable groove in a sliding mode.

Preferably, the screw rod is installed on the top of movable block, and the outside threaded connection of screw rod has the second fixed block, the fixed flange fixed connection of second fixed block and top.

Preferably, the limiting blocks are symmetrically arranged on two sides of the movable block, the limiting blocks are connected to the inner portions of the limiting grooves in a sliding mode, and the limiting grooves are symmetrically arranged on the inner walls of the movable grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model drives the fixed rotating block to rotate through the rotation of the screw rod, so that the stay cord is wound on the outer side of the fixed rotating block to tighten the stay cord, and at the moment, each connecting block is driven to move towards one side of the protective sleeve, so that the rotating rods at the two ends of the connecting block rotate outwards, and the two fixed flanges are driven to be away from each other, thereby facilitating the length adjustment of the corrugated pipe;

(2) This is novel cup joints in the outside of bellows through the protective sheath to make the protective sheath shelter from the outside of bellows, and because the bellows has the elasticity, thereby make the bellows pliability stronger, then make the intensity of bellows relatively poor, set up the protective sheath in the outside of bellows, thereby protect the bellows, thereby prolong the life of bellows.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the bellows structure of the present invention;

fig. 3 is a schematic structural view of the connection assembly of the present invention;

FIG. 4 is a schematic view of the structure of the protective sheath of the present invention;

FIG. 5 is a schematic view of the structure of the fixed rotary block of the present invention;

in the figure: 1. a bellows; 2. a fixed flange; 3. a connection assembly; 301. a protective sleeve; 302. A first fixed block; 303. connecting blocks; 304. rotating the rod; 305. a first rope hole; 306. pulling a rope; 307. a sleeve; 308. a connecting rod; 309. a spring; 4. an adjustment assembly; 401. a second fixed block; 402. a screw; 403. a support bar; 404. a positioning ring; 405. fixing the rotating block; 406. a second rope hole; 407. a movable groove; 408. a movable block; 409. a limiting groove; 410. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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 efforts all belong to the protection scope of the present invention.

In the first embodiment, as shown in fig. 1 to 5, the present invention includes a corrugated pipe 1, fixing flanges 2 are symmetrically installed at the top end and the bottom end of the corrugated pipe 1, a connecting assembly 3 is installed between the two fixing flanges 2, the connecting assembly 3 includes first fixing blocks 302 installed at the outer sides of the fixing flanges 2 at equal angles, a connecting block 303 is installed between the upper and the lower first fixing blocks 302, the top end and the bottom end of the connecting block 303 are symmetrically and rotatably connected with a rotating rod 304, one end of the rotating rod 304 is rotatably connected with the first fixing blocks 302, a first rope hole 305 is formed inside the connecting block 303, pull ropes 306 are installed inside the first rope holes 305 on the rotating rods 304, an adjusting assembly 4 is installed outside the pull ropes 306, a protective sleeve 301 is installed at one side of the connecting block 303 close to the corrugated pipe 1, the protective sleeve 301 is sleeved outside the corrugated pipe 1, sleeves 307 are installed at equal angles outside the protective sleeve 301, a connecting rod 308 is movably arranged in the sleeve 307, one end of the connecting rod 308 is fixedly connected with the connecting block 303, one side of the connecting rod 308 close to the protective sleeve 301 is provided with a spring 309, one end of the spring 309 is fixedly connected with the protective sleeve 301, the adjusting component 4 comprises a supporting rod 403 arranged on one side of the protective sleeve 301, one end of the supporting rod 403 is provided with a positioning ring 404, the positioning ring 404 is rotatably clamped with a fixed rotating block 405, the fixed rotating block 405 is internally provided with a second rope hole 406, the pulling rope 306 is inserted in the second rope hole 406, the fixed rotating block 405 is internally provided with a movable groove 407, the movable groove 407 is positioned above the second rope hole 406, the movable groove 407 is internally connected with a movable block 408 in a sliding manner, the top end of the movable block 408 is provided with a screw 402, the outer side of the screw 402 is connected with a second fixed block 401 in a threaded manner, and the second fixed block 401 is fixedly connected with a fixed flange 2 above, the two sides of the movable block 408 are symmetrically provided with limiting blocks 410, the limiting blocks 410 are connected to the inside of the limiting groove 409 in a sliding manner, and the limiting groove 409 is symmetrically arranged on the inner wall of the movable groove 407;

screw 402 rotates and drives fixed commentaries on classics piece 405 and rotates, thereby make stay cord 306 twine in the outside of fixed commentaries on classics piece 405, make stay cord 306 tighten up, it removes towards protective sheath 301 one side to drive each connecting block 303 this moment, make the dwang 304 at connecting block 303 both ends outwards rotate, thereby drive two mounting flange 2 and keep away from each other, thereby conveniently carry out length adjustment to bellows 1, protective sheath 301 cup joints in the outside of bellows 1 simultaneously, thereby make protective sheath 301 shelter from the outside of bellows 1, and because bellows 1 has the elasticity, thereby make 1 pliability of bellows stronger, then make 1's intensity of bellows relatively poor, set up protective sheath 301 in the outside of bellows 1, thereby protect bellows 1, thereby prolong 1's life.

The working principle is as follows: when the corrugated pipe 1 needs to be stretched, the screw 402 is rotated at the moment, the movable block 408 at the bottom end of the screw 402 is clamped with the fixed rotating block 405 through the limiting block 410 and the limiting groove 409, so that the fixed rotating block 405 is driven to rotate by the rotation of the screw 402, the pull rope 306 is wound on the outer side of the fixed rotating block 405, so that the pull rope 306 is tensioned, the pull rope 306 is arranged inside the first rope holes 305 on the rotating rods 304, after the pull rope 306 is tensioned, the rotating rods 304 are driven to move towards the protective sleeve 301 at the same time, so that the two rotating rods 304 rotate outwards, so that the upper and lower fixing flanges 2 of the corrugated pipe 1 are pushed to be away from each other, so that the length of the corrugated pipe 1 is conveniently adjusted, when the corrugated pipe 1 needs to be shrunk, the screw 402 is reversely rotated at the moment, so that the fixed rotating block 405 is driven to rotate, the pull rope 306 wound on the outer side of the fixed rotating block 405 is loosened, at the moment, the connecting blocks 303 move back under the elastic action of the spring 309, so that the rotating rods 304 rotate, so that the two fixing flanges 2 are driven to approach each other, and the corrugated pipe 1 shrinks at the moment.

Claims

1. The utility model provides an expansion joint structure for high security transmission line for nuclear power station, includes bellows (1), its characterized in that: the top end and the bottom end of the corrugated pipe (1) are symmetrically provided with fixed flanges (2), and a connecting assembly (3) is arranged between the two fixed flanges (2);

connecting assembly (3) including wait angle mounting in first fixed block (302) in mounting flange (2) the outside, be equipped with connecting block (303) between two upper and lower first fixed blocks (302), the top and the equal symmetrical swivelling joint in bottom of connecting block (303) have dwang (304), the one end and the first fixed block (302) of dwang (304) rotate to be connected, first rope hole (305) have been seted up to the inside of connecting block (303), the internally mounted of first rope hole (305) on a plurality of dwangs (304) has stay cord (306), adjusting part (4) are installed in the outside of stay cord (306).

2. The expansion joint structure for a high-safety power transmission line for a nuclear power plant as recited in claim 1, wherein: one side that connecting block (303) are close to bellows (1) is equipped with protective sheath (301), protective sheath (301) cup joint in the outside of bellows (1), sleeve (307) are installed to angle such as the outside of protective sheath (301), the inside movable mounting of sleeve (307) has connecting rod (308), the one end and connecting block (303) fixed connection of connecting rod (308), spring (309) are installed to one side that connecting rod (308) are close to protective sheath (301), the one end and protective sheath (301) fixed connection of spring (309).

3. The expansion joint structure for the high-safety transmission line for the nuclear power plant as recited in claim 2, wherein: adjusting part (4) is including installing in bracing piece (403) of protective sheath (301) one side, and holding ring (404) is installed to the one end of bracing piece (403), and the inside of holding ring (404) rotates the joint and has fixed commentaries on classics piece (405).

4. The expansion joint structure for the high-safety transmission line for the nuclear power plant as recited in claim 3, wherein: a second rope hole (406) is formed in the fixed rotating block (405), and the pull rope (306) is inserted into the second rope hole (406).

5. The expansion joint structure for the high-safety transmission line for the nuclear power plant as recited in claim 3, wherein: a movable groove (407) is formed in the fixed rotating block (405), the movable groove (407) is located above the second rope hole (406), and a movable block (408) is connected to the inner portion of the movable groove (407) in a sliding mode.

6. The expansion joint structure for a high-safety power transmission line for a nuclear power plant as recited in claim 5, wherein: screw rod (402) are installed on the top of movable block (408), and the outside threaded connection of screw rod (402) has second fixed block (401), second fixed block (401) and mounting flange (2) fixed connection of top.

7. The expansion joint structure for the high-safety transmission line for the nuclear power plant as recited in claim 5, wherein: the limiting blocks (410) are symmetrically arranged on two sides of the movable block (408), the limiting blocks (410) are connected to the inner portions of the limiting grooves (409) in a sliding mode, and the limiting grooves (409) are symmetrically arranged on the inner wall of the movable groove (407).