CN215265869U

CN215265869U - Transformer conducting rod capable of relieving stress

Info

Publication number: CN215265869U
Application number: CN202121437379.4U
Authority: CN
Inventors: 莫文雄; 雷绒; 刘创; 巨玲; 王勇; 刘俊翔
Original assignee: China XD Electric Co Ltd; Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd; Xian XD Transformer Co Ltd
Current assignee: China XD Electric Co Ltd; Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd; Xian XD Transformer Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-12-21
Anticipated expiration: 2031-06-25

Abstract

The utility model provides a can alleviate transformer conducting rod of stress. The conducting rod is simple in process, convenient to install, practical and reliable, and guarantees the long-term safe and reliable operation of transformer equipment for the offshore platform while guaranteeing the reliable connection of the oil-oil sleeve and the cable terminal. A transformer conducting rod capable of relieving stress comprises a first conducting rod, a soft conducting wire and a second conducting rod; the first conducting rod comprises a first connector lug and a first rod body which are sequentially connected, the first connector lug is used for being electrically connected with the oil-oil sleeve, and the free end of the first rod body is electrically connected with one end of the soft conducting wire; the second conducting rod comprises a second connector lug and a second rod body which are sequentially connected, the second connector lug is used for being electrically connected with the cable terminal, and the free end of the second rod body is electrically connected with the other end of the soft conducting wire; the first rod body and the second rod body are coaxially arranged; when the conducting rod is in a working state, the soft conducting wire is in a loose state.

Description

Transformer conducting rod capable of relieving stress

Technical Field

The utility model relates to a power line construction accessory application technical field specifically is a can alleviate transformer conducting rod of stress.

Background

By utilizing natural advantages, the construction of an environment-friendly offshore wind farm is a trend, and reactors and transformers serving as main equipment are more widely applied. The high-voltage outlet mode of transformer equipment for offshore platforms is generally as follows: the high voltage lead is led out through an oil-oil bushing and connected to the cable terminal through a conductive rod, which is usually machined from a round copper rod. During the operation of the product, the conducting rods connecting the bushings and the cable terminations are subjected to stresses over a long period of time due to manufacturing and assembly tolerances, which in the extreme case can lead to fatigue damage to the bushings, to the terminal block at the end of the cable termination.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a can alleviate transformer conducting rod of stress. The conducting rod is simple in process, convenient to install, practical and reliable, and guarantees the long-term safe and reliable operation of transformer equipment for the offshore platform while guaranteeing the reliable connection of the oil-oil sleeve and the cable terminal.

The utility model discloses a realize through following technical scheme:

a transformer conducting rod capable of relieving stress comprises a first conducting rod, a soft conducting wire and a second conducting rod;

the first conducting rod comprises a first connector lug and a first rod body which are sequentially connected, the first connector lug is used for being electrically connected with the oil-oil sleeve, and the free end of the first rod body is electrically connected with one end of the soft conducting wire;

the second conducting rod comprises a second connector lug and a second rod body which are sequentially connected, the second connector lug is used for being electrically connected with the cable terminal, and the free end of the second rod body is electrically connected with the other end of the soft conducting wire; the first rod body and the second rod body are coaxially arranged;

when the conducting rod is in a working state, the soft conducting wire is in a loose state.

Preferably, the connection part of the soft lead and the first conducting rod and the connection part of the soft lead and the second conducting rod are respectively wrapped with semi-conductive paper.

Preferably, the first rod body, the soft lead and the second rod body are all wrapped by insulating layers.

Preferably, the insulating layer adopts insulating crepe paper, and the insulating crepe paper is wound and wrapped on the outer parts of the first rod body, the soft lead and the second rod body.

Preferably, the first conductive rod is integrally arranged, and the first connector lug is arranged in a flat shape; the first connector lug is provided with a plurality of first connecting holes; the free end of the first rod body is provided with a first inner hole along the axis.

Preferably, the second conducting rod is arranged in an integrated L shape, the free end of the L-shaped short edge is provided with the second connector lug, the second connector lug is arranged in a flat shape, and the second connector lug is provided with a plurality of second connecting holes; the free end of the L-shaped long edge is provided with a second inner hole along the axis.

Preferably, two ends of the soft lead respectively extend into the first inner hole and the second inner hole for cold-pressing and crimping matching.

Preferably, the side wall of the bottom of the first inner hole is provided with a first vent hole, and the side wall of the bottom of the second inner hole is provided with a second vent hole.

Preferably, the soft conducting wire adopts a soft copper stranded wire.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model provides a can alleviate transformer conducting rod of stress is provided with soft wire through the technology of colding pressing between original conducting rod, simple process, and is practical reliable, adjustable because of the size cooperation that manufacturing, assembly tolerance caused. The soft connection arrangement of the soft lead can relieve fatigue accumulation damage caused by stress concentration borne by the conducting rod when the transformer runs for a long time. The vibration of the transformer equipment can be buffered, and the mechanical damage caused by the hard connection of the conducting rod, the oil-oil sleeve and the cable terminal can be buffered. The reliable connection between the oil-oil casing and the cable terminal is ensured, the mechanical damage caused by relative shaking of the joints of all parts in an offshore wind state is relieved, and the transformer equipment for the offshore platform can run safely and reliably for a long time.

Furthermore, the semi-conductive paper is wound on the joint of the soft lead and the conducting rod to form a smooth electrode, so that the joint is smooth, safe and controllable.

Further, can be according to the utility model discloses the scene that uses, consider electric structures such as voltage level, insulating distance of its position, the insulating crepe paper of certain thickness of outer parcel of conducting rod makes the use scene of this equipment more extensive as the insulating layer.

Furthermore, the flat design of the first connector lug makes the connection between related parts more convenient, increases the contact surface between connecting pieces and improves the reliability of electrical connection. The design of the first bore makes the electrical connection of the respective components more reliable.

Furthermore, the second conducting rod is L-shaped, and the requirements of working conditions are met. The flat design of the second connector lug makes the connection between the relevant parts more convenient, increases the contact surface between the connecting pieces and improves the reliability of the electrical connection. The design of the second bore makes the electrical connection of the respective components more reliable.

Furthermore, the soft lead extends into the first inner hole and the second inner hole, so that the contact surface between corresponding parts is increased, and the electric connection performance is enhanced; and the cold-pressing compression joint avoids damage to each part caused by high temperature.

Furthermore, the design of the first vent hole and the second vent hole avoids the residue of gas in the holes in the crimping process, and the reliability of the electric connection between corresponding parts is improved.

Furthermore, the soft wire adopts a soft copper stranded wire, so that the use is convenient, and the cost is controllable.

Drawings

Fig. 1 is a schematic view of the connection structure of the transformer conducting rod of the present invention;

fig. 2 is a schematic structural diagram of a first conductive rod in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second conductive rod according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an embodiment of the present invention;

in the figure: the cable comprises a first conducting rod 1, a soft conducting wire 2, a second conducting rod 3, an insulating layer 4, semi-conductive paper 5, a first connecting hole 11, a first inner hole 12, a first vent hole 13, a second connecting hole 31, a second inner hole 32, a second vent hole 33, an oil-oil sleeve 6 and a cable terminal 7.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.

As shown in fig. 1, a transformer conducting rod capable of relieving stress comprises a first conducting rod 1, a soft conducting wire 2 and a second conducting rod 3, wherein the soft conducting wire 2 is preferably a soft copper conducting wire.

The first conducting rod 1 comprises a first connector lug and a first rod body which are connected in sequence, and the second conducting rod 3 comprises a second connector lug and a second rod body which are connected in sequence.

One end of the soft lead 2 is electrically connected with the free end of the first rod body, the other end of the soft lead 2 is electrically connected with the free end of the second rod body, and the joint of the soft lead is wrapped by semi-conductive paper 5 to smooth the shape of the electrode.

The outside of the first body of rod, soft wire 2 and the second body of rod all wraps up and is provided with insulating layer 4. The insulating layer 4 is preferably made of insulating crepe paper, and the insulating crepe paper is wound and wrapped on the outer portions of the first rod body, the soft lead 2 and the second rod body.

As shown in fig. 2, the first conductive rod 1 is a copper rod integrally formed, and one end of the copper rod is pressed to form a first connector lug, so that the first connector lug is flat; the first connector lug is provided with a plurality of first connection holes 11; the free end of the first rod body is provided with a first inner hole 12 along the axis of the first rod body, and the depth of the first inner hole 12 is preferably 30-50 mm, and 40mm in the preferred embodiment.

As shown in fig. 3, the second conductive rod 3 is an L-shaped copper rod, and a second connector lug is arranged at the free end of the L-shaped short side in a pressure extrusion manner, the second connector lug is flat, and the second connector lug is provided with a plurality of second connecting holes 31; the free end of the long side of the L shape is provided with a second inner hole 32 along the axis, and the depth of the second inner hole 32 is preferably 30-50 mm, and 40mm in the preferred embodiment.

The two ends of the soft lead 2 respectively extend into the first inner hole 12 and the second inner hole 32, and the soft lead is electrically connected with the first conducting rod 1 and the second conducting rod 3 through cold-pressing compression joint.

The side wall of the bottom of the first inner hole 12 is provided with a first vent hole 13, and the side wall of the bottom of the second inner hole 32 is provided with a second vent hole 33. The hole diameters of the first ventilation holes 13 and the second ventilation holes 33 are preferably 4 mm.

As shown in fig. 4, the first connector lug is used to electrically connect with the oil-oil casing 6, and the free end of the first rod is electrically connected with one end of the flexible lead 2. The second connector lug is used for being electrically connected with the cable terminal 7, and the free end of the second rod body is electrically connected with the other end of the soft lead 2. The first rod body and the second rod body are coaxially arranged, so that stress of each part of the soft lead 2 is uniform, and the service life of the conducting rod is prolonged. When the conductive rod is in working state, the soft wire 2 is in loose state and can be bent to any direction. The mechanical damage caused by the hard connection of the conducting rod, the oil-oil sleeve and the cable terminal due to the vibration of the transformer equipment can be buffered, and the fatigue accumulation damage caused by the stress concentration borne by the conducting rod when the transformer runs for a long time can be buffered.

The utility model discloses a transformer conducting rod, the external diameter size of circle bar copper and soft copper strands can be selected according to the current density that the conductor passed through, and the length size of circle bar copper can be confirmed according to connecting length needs. Meanwhile, the thickness of the insulating wrapping paper can be determined according to the actual needs of the product. The transformer conducting rod meets the requirements of transformer equipment which is led out through a cable terminal, is reasonable in design, simple in process, convenient and fast to install and reliable in performance, ensures the reliable connection of an oil-oil sleeve and the cable terminal, ensures the long-term safe and reliable operation of the transformer equipment for the offshore platform, and has wide application prospects.

Claims

1. The transformer conducting rod capable of relieving stress is characterized by comprising a first conducting rod (1), a soft lead (2) and a second conducting rod (3);

the first conducting rod (1) comprises a first connector lug and a first rod body which are sequentially connected, the first connector lug is used for being electrically connected with the oil-oil sleeve (6), and the free end of the first rod body is electrically connected with one end of the soft conducting wire (2);

the second conducting rod (3) comprises a second connector lug and a second rod body which are sequentially connected, the second connector lug is used for being electrically connected with the cable terminal (7), and the free end of the second rod body is electrically connected with the other end of the soft conducting wire (2); the first rod body and the second rod body are coaxially arranged;

when the conducting rod is in a working state, the soft conducting wire (2) is in a loose state.

2. The transformer conducting rod capable of relieving stress as recited in claim 1, wherein the joint of the soft conducting wire (2) and the first conducting rod (1) and the joint of the soft conducting wire (2) and the second conducting rod (3) are respectively wrapped with semi-conductive paper (5).

3. The transformer conducting rod capable of relieving stress as recited in claim 1, wherein the first rod body, the soft conducting wire (2) and the second rod body are all wrapped with an insulating layer (4).

4. The transformer conducting rod capable of relieving stress as claimed in claim 3, wherein the insulating layer (4) is made of insulating crepe paper, and the insulating crepe paper is wrapped around the first rod body, the soft lead (2) and the second rod body.

5. The transformer conducting rod capable of relieving stress as claimed in claim 1, wherein the first conducting rod (1) is integrally arranged, and the first connector lug is arranged in a flat shape; the first connector lug is provided with a plurality of first connection holes (11); the free end of the first rod body is provided with a first inner hole (12) along the axis.

6. The transformer conductor bar capable of relieving stress as claimed in claim 5, wherein the second conductor bar (3) is arranged in an integral L shape, the free end of the short side of the L shape is provided with the second connector lug, the second connector lug is arranged in a flat shape, and the second connector lug is provided with a plurality of second connecting holes (31); the free end of the long side of the L shape is provided with a second inner hole (32) along the axis.

7. The transformer conducting rod capable of relieving stress as claimed in claim 6, wherein two ends of the soft conducting wire (2) respectively extend into the first inner hole (12) and the second inner hole (32) for cold press fit.

8. The conducting rod of transformer capable of relieving stress as claimed in claim 7, wherein the side wall of the bottom of the first inner hole (12) is provided with a first vent hole (13), and the side wall of the bottom of the second inner hole (32) is provided with a second vent hole (33).

9. The conducting rod of transformer capable of relieving stress as claimed in claim 1, wherein the flexible conducting wire (2) is a flexible copper stranded wire.