CN-122026262-A - Flow guide hardware fitting with four-phase independent rotary joints

CN122026262ACN 122026262 ACN122026262 ACN 122026262ACN-122026262-A

Abstract

The invention relates to the technical field of diversion fittings for power stations, and discloses a diversion fitting with four independent rotary joints, which comprises a circular shaft, wherein a first U-shaped rotary joint, a second U-shaped rotary joint, a first abnormal-shaped rotary joint, a second abnormal-shaped rotary joint and wear-resistant spacers on rotary contact surfaces between every two of the four rotary joints are arranged on the outer circumferential surface of the circular shaft in a layer-by-layer nested mode, a fixed connecting rod assembly or a sliding connecting rod assembly is respectively arranged at the outer ends of the first U-shaped rotary joint, the second U-shaped rotary joint, the first abnormal-shaped rotary joint and the second abnormal-shaped rotary joint, the outer end of the fixed connecting rod assembly is fixedly connected with a female pipe hoop fitting, the outer end of the sliding connecting rod assembly is in sliding connection with the female pipe hoop fitting, and the diversion fitting is in suspension installation through a suspension assembly arranged at the upper end of the circular shaft or in support installation through a support assembly arranged at the lower end of the circular shaft.

Inventors

WANG HUIPING
ZHANG FEI
LI NING
YING JIE
JIANG YANG
ZOU RENJUN
LI ZIYUAN
Kou Zhanhua
DING YIFAN
SU HANG
YU HENG
LIN JUNCHEN
LIU XIAOLONG
SHEN XIAO
WANG JIAHAO
QIN HAIBO
WU YAYUN
LI WEIDONG
GE YIHUA
BI WEI

Assignees

中国能源建设集团南京线路器材有限公司

Dates

Publication Date: 20260512
Application Date: 20260214

Claims (11)

1. A diversion fitting with four independent rotary joints comprises a round shaft (5) and is characterized in that a first U-shaped rotary joint (1), a second U-shaped rotary joint (2), a first special-shaped rotary joint (3), a second special-shaped rotary joint (4) and wear-resistant isolation pads (6) on rotary contact surfaces between every two of the four rotary joints are arranged on the outer circumferential surface of the round shaft (5) in a layer-by-layer nested mode, a fixed connecting rod assembly (7) or a sliding connecting rod assembly (8) is arranged at the outer ends of the first U-shaped rotary joint (1), the second U-shaped rotary joint (2), the first special-shaped rotary joint (3) and the second special-shaped rotary joint (4) respectively, the outer ends of the fixed connecting rod assembly (7) are fixedly connected with a tubular female hoop (9), the outer ends of the sliding connecting rod assembly (8) are in sliding connection with the tubular female hoop (9), and the diversion fitting is suspended by a suspension assembly (10) arranged at the upper end of the round shaft (5) or is suspended by a suspension assembly (11) arranged at the lower end of the round shaft.
2. The water conservancy diversion gold utensil with four independent rotary joints of claim 1, wherein the first U-shaped rotary joint (1) is formed by welding a first U-shaped plate (101) and a first lug-shaped connecting plate (102), first mounting holes (103) are symmetrically formed in the upper end and the lower end of the first U-shaped plate (101), first lug-shaped plate through holes (104) are formed in the first lug-shaped plate (102), and the opening direction of the first mounting holes (103) is perpendicular to the opening direction of the first lug-shaped plate through holes (104); The second U-shaped rotary joint (2) is formed by welding a second U-shaped plate (201) and a second lug-shaped connecting plate (202), second mounting holes (203) are symmetrically formed in the upper end and the lower end of the second U-shaped plate (201), second lug through holes (204) are formed in the second lug plate (202), the opening directions of the second mounting holes (203) are perpendicular to the opening directions of the second lug through holes (204), and the outer side distance of a U opening of the first U-shaped plate (101) is larger than the inner side distance of the U opening of the second U-shaped plate (201).
3. The water conservancy diversion gold utensil with four independent rotary joints according to claim 2, wherein the first abnormal rotary joint (3) and the second abnormal rotary joint (4) are all integrated into a whole, one end of the first abnormal rotary joint (3) is processed into a semicircular-like plate (301), the side surface of the semicircular-like plate (301) is processed into a pair of first circular-like plates (302) in an up-down symmetrical mode, a first circular hole (303) is formed in the center of the semicircular-like plate (301), second circular holes (304) are formed in the centers of the two first circular-like plates (302) in an aligned mode, and the opening directions of the first circular holes (303) are perpendicular to the opening directions of the two second circular holes (304); One end of the second abnormal-shaped rotary joint (4) is processed into a second circular plate (401), a strip-shaped semicircular plate (402) is vertically processed on the outer circumferential surface of the second circular plate (401), a third circular hole (403) is formed in the middle of the second circular plate (401), a fourth circular hole (404) is formed in the middle of a semicircular area of the strip-shaped semicircular plate (402), and the opening direction of the third circular hole (403) is mutually perpendicular to the opening direction of the fourth circular hole (404).
4. The water conservancy diversion gold utensil with four independent revolute joints of claim 3, wherein fixed connecting rod assembly (7) include fixed connecting rod (701), the one end fixedly connected with of fixed connecting rod (701) is first two side board connection support (702), the other end fixedly connected with of fixed connecting rod (701) is fixed cutting ferrule (703), alignment has seted up a pair of fifth circular hole (704) on the both sides face of first two side board connection support (702), fixed connecting rod assembly (7) are through first two side board connection support (702) and the rectangular semicircle board (402) of the first U-shaped plate (101) of first U-shaped revolute joint (1) or the second U-shaped plate (201) of second U-shaped revolute joint (2) or the quasi-semicircle board (301) of first abnormal shape revolute joint (3) or second abnormal shape revolute joint (4) carry out bolted connection.
5. The water conservancy diversion gold utensil with four independent rotary joints of claim 4, wherein the pipe nut (12) can be fixedly connected with the fixed connecting rod assembly (7) by clamping the pipe nut hoop gold utensil (9) into the inner side of the fixed clamping sleeve (703).
6. The water conservancy diversion gold utensil with four independent revolute joints of claim 3, wherein sliding connection rod subassembly (8) include sliding connection rod (801), sliding connection rod (801) one end fixedly connected with second double-sided board connection support (802), sliding sleeve is equipped with sliding sleeve (803) on sliding connection rod (801), sliding connection rod (801) other end fixedly connected with support slide (804), alignment has seted up a pair of sixth circular hole (805) on the both sides face of second double-sided board connection support (802), sliding connection rod subassembly (8) are through second double-sided board connection support (802) with first U-shaped plate (101) of first U-shaped revolute joint (1) or second U-shaped plate (201) of second U-shaped revolute joint (2) or the semi-circular plate (301) of class of first abnormal shape revolute joint (3) or rectangular semi-circular plate (402) of second abnormal shape revolute joint (4) carry out bolted connection.
7. The water conservancy diversion gold utensil with four independent rotary joints of claim 6, wherein the pipe nut hoop gold utensil (9) is blocked into the inside of the slip cutting ferrule (803) and can realize the slip of pipe nut (12) along the slip connecting rod (801) in the axial direction, namely the slip connection of pipe nut (12) and slip connecting rod assembly (8), support sliding disk (804) is installed in the inner wall of pipe nut (12), is used for playing a role in supporting the inner wall of pipe nut (12) when pipe nut (12) axially slides.
8. The device with four independent rotary joints according to claim 1, wherein the suspension assembly (10) comprises a connecting disc (1001), a connecting support (1002) is fixedly arranged on the upper surface of the connecting disc (1001), a connecting sleeve (1003) is fixedly arranged below the connecting disc (1001), the circular shaft (5) is fixedly inserted into the connecting sleeve (1003), the connecting support (1002) is connected with a suspension insulator (13) through a bolt, and the device is arranged below the suspension insulator (13) in a suspension manner through the suspension assembly (9).
9. The water conservancy diversion gold utensil with four independent rotary joints of claim 1, wherein supporting component (11) include chassis (1101), fixedly be provided with support sleeve (1102) on chassis (1101), fixedly be provided with a plurality of gusset (1103) between the outer periphery of support sleeve (1102) and chassis (1101), circle axle (5) fixed cartridge is in support sleeve (1102), the bottom surface installation of chassis (1101) sets up on pillar insulator (14), promptly the water conservancy diversion gold utensil passes through supporting component (10) support the installation and is set up the top of pillar insulator (14).
10. The water conservancy diversion gold utensil with four independent rotary joints according to claim 1 is characterized in that the wear-resistant spacer (6) is an annular sheet and is made of nonmetal wear-resistant materials, and the wear-resistant spacer (6) is respectively embedded in the rotary contact surface of the first U-shaped rotary joint (1) and the second U-shaped rotary joint (2), the rotary contact surface of the second U-shaped rotary joint (2) and the first special-shaped rotary joint (3) and the rotary contact surface of the first special-shaped rotary joint (3) and the second special-shaped rotary joint (4).
11. The water conservancy diversion gold utensil with four independent revolute joints of phase, wherein be provided with anti-corona ball (15) on the water conservancy diversion gold utensil suit, first U type revolute joint (1), second U type revolute joint (2), first abnormal shape revolute joint (3), second abnormal shape revolute joint (4) are connected with a tub female (12) respectively through fixed connecting rod subassembly (7) or sliding connection pole subassembly (8) and tub female staple bolt gold utensil (9) cooperation, four tub female (12) are according to horizontal vertical cross distribution, or according to the overall arrangement in the converter station each independent rotation adjustment of each tub female (12) the spatial orientation, and then corresponding adjustment on anti-corona ball (15) are corresponding.

Description

Flow guide hardware fitting with four-phase independent rotary joints Technical Field The invention relates to the technical field of flow guiding hardware fittings for power exchange stations, in particular to a flow guiding hardware fitting with four independent rotary joints. Background The direct current transmission is dominant in the scenes of long-distance high-capacity transmission, power grid interconnection, new energy grid connection, submarine/underground transmission and the like due to the advantages of high transmission efficiency, low electric energy loss, high economy, flexible operation and the like of direct current transmission relative to alternating current transmission, and is also a core choice for construction of extra-high voltage converter stations and cross-regional power grids. The core hub in the direct current transmission of the direct current converter station plays important roles of alternating current and direct current conversion, and the hardware fitting in the station has the functions of guiding flow or mechanically connecting all the devices, and simultaneously has enough relatively independent flexibility rotation and vibration resistance so as to reduce the risk factors of bending moment, bearing and the like which are generated by vibration and installation errors and possibly damage the devices. The diversion fitting in the converter station is a key component for realizing current conduction and space connection between tubular buses (called as tubular buses for short), and the structural rationality of the diversion fitting directly influences the running stability, the electric energy transmission efficiency and the corona inhibition effect of the converter station. With the continuous improvement of the capacity of the high-voltage direct-current converter station, the requirements on the flexibility of the pipe-to-bus connection, the adaptability of the multiphase layout and the anti-corona performance are increasingly stringent. In the prior art, the diversion hardware fitting mostly adopts a fixed connection structure or a single rotary joint design, and is difficult to simultaneously meet the independent space azimuth adjustment requirement of a four-phase pipe nut. For example, the traditional flow guiding hardware tool often binds multiphase pipe bus into a fixed whole, when the layout in a converter station changes or the space position of the pipe bus needs to be optimized, the whole flow guiding hardware tool needs to be detached and reinstalled, the operation is complex, the maintenance cost is high, mechanical fatigue is easily caused by uneven stress of the pipe bus, in addition, the flow guiding hardware tool with a rotating joint can only realize rotation in a single direction or a limited angle, the horizontal and vertical cross distribution of the four-phase pipe bus or other complex layout cannot be flexibly adapted, the matching of the position of an opening of an anti-corona ball and the connection position of the pipe bus is poor, corona discharge is easily generated under high voltage, and the electric energy transmission quality and the service life of equipment are influenced. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a diversion fitting with four independent rotation joints, which solves the technical problems that the existing diversion fitting is difficult to simultaneously meet the independent space azimuth adjustment requirement of the four-phase pipe nut and has poor adaptability and rotation flexibility by configuring four joint structures capable of independently realizing multi-direction large-angle rotation and optimizing the open hole design of the connection part of the anti-corona ball and the pipe nut. The technical scheme includes that the diversion fitting with four independent rotary joints comprises a round shaft, wherein a first U-shaped rotary joint, a second U-shaped rotary joint, a first abnormal-shaped rotary joint, a second abnormal-shaped rotary joint and wear-resistant spacers on rotary contact surfaces between every two of the four rotary joints are arranged on the outer circumferential surface of the round shaft in a layer-by-layer nested mode, a fixed connecting rod assembly or a sliding connecting rod assembly is arranged at the outer ends of the first U-shaped rotary joint, the second U-shaped rotary joint, the first abnormal-shaped rotary joint and the second abnormal-shaped rotary joint respectively, the outer ends of the fixed connecting rod assembly are fixedly connected with a female pipe hoop fitting, the outer ends of the sliding connecting rod assembly are in sliding connection with the female pipe hoop fitting, and the diversion fitting is in suspension installation through a suspension assembly arranged at the upper end of the round shaft or in supporting installation through a supporting assembly arranged at the lower end of the round shaft. Further,