A tubular busbar suspension device

Abstract

The present invention discloses a tubular busbar suspension device, comprising a three-point suspension hardware, a jumper wire clamp and an insulator string; the upper end of the insulator string is connected to the frame crossbeam hanging point, and the lower end is connected to the hanging hole on the main suspension structure of the three-point suspension hardware, and the tubular busbar is fastened by the tower-type hanging point hardware; the double-sided auxiliary cable suspension structure of the three-point suspension hardware extends to both sides of the main suspension structure in parallel with the tubular busbar direction, and fastens the tubular busbar by tightening the hanging point, and its length can be adjusted by extending the pull rod; the adjacent interval tubular busbars are connected by jumper wire clamps, and wire counterweights are added inside on both sides of the jumper wire clamps. The present invention shortens the suspension spacing of the tubular busbars in the middle of the span and the adjacent intervals by setting a three-point suspension hardware and adjusting the length of its double-sided auxiliary cable suspension structure as needed. The problem of excessive deflection of the tubular busbar in the middle of the span within the interval and the problem of excessive deflection of the tubular busbar between the adjacent interval suspension points are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission and transformation of electric power engineering, and relates to a tubular busbar suspension device. Background Art

[0002] The tubular busbar has been used as a standard busbar form for substation power distribution equipment. For large-span suspended tubular busbars, excessive deflection will cause the following problems: (1) If a vertical telescopic disconnector is used on the busbar side, the static contact of the disconnector will be too offset and the disconnector cannot be opened and closed normally. (2) The bending of the suspended tubular busbar is too obvious, affecting the appearance. (3) The suspended tubular busbar affects the live distance verification of the electrical equipment below it. The control of the deflection of the large-span suspended tubular busbar is mostly achieved by adding a frame to shorten the suspension distance of the tubular busbar, which is less economical; adding counterweights at both ends of the suspended tubular busbar has little effect. Summary of the invention

[0003] In view of the problem of excessive deflection of large-span suspended tubular busbars in the prior art, the present invention provides a tubular busbar suspension device, which can effectively solve the problem of excessive deflection of large-span suspended tubular busbars, is convenient to construct, and has high economy.

[0004] The present invention is achieved through the following technical solutions:

[0005] A tubular busbar suspension device comprises a three-point suspension fitting, a jumper wire clamp and an insulator string;

[0006] The two three-point suspension fittings are symmetrically arranged on both sides of the jumper clamp, and suspend two sections of tubular busbars respectively;

[0007] The jumper wire clamp is arranged below the frame crossbeam; the ends of two adjacent sections of tubular busbars are connected by the jumper wire clamp;

[0008] The two insulator strings are symmetrically arranged on both sides of the jumper wire clamp, and one end of an insulator string is connected to a three-point suspension hardware, and the other end is connected to the frame crossbeam hanging point.

[0009] As a further improvement of the present invention, the three-point suspension hardware includes a main suspension structure and a double-sided auxiliary cable suspension structure;

[0010] The lower end of the main suspension structure is connected to the tubular busbar, and the upper end is connected to the insulator string;

[0011] The double-sided auxiliary cable suspension structures are located on both sides of the main suspension structure, parallel to the direction of the tubular busbar and arranged symmetrically, forming a triangular structure for fastening the tubular busbar with the main suspension structure as the high line and the double-sided auxiliary cable suspension structures as the waistline.

[0012] As a further improvement of the present invention, the main suspension structure includes a tower-type hanging point hardware, and the tower-type hanging point hardware is provided with a hanging hole; the bottom of the tower-type hanging point hardware is provided with a fixed hanging point for being mounted on the tubular busbar.

[0013] As a further improvement of the present invention, each side of the double-sided auxiliary cable suspension structure includes a connecting plate, a basket bolt, a U-bolt, an extension rod and a tensioning hanging point;

[0014] The tensioning hanging point is fixed on the tubular busbar, one end of the connecting plate is hinged to the tensioning hanging point, and the other end is connected to the flower basket bolt, the other end of the flower basket bolt is connected to the U-bolt, and the U-bolt is connected to the extension rod; the two extension rods on both sides of the main suspension structure are respectively connected to the two sides of the top of the main suspension structure (102).

[0015] As a further improvement of the present invention, it also includes a shielding ring, which is supported and connected to the connecting plate, and the connecting plate, basket bolts, and U-bolts are placed within the range of the shielding ring.

[0016] As a further improvement of the present invention, the extension pull rod is a hollow circular tubular structure.

[0017] As a further improvement of the present invention, tubular busbar weights are provided inside both sides of the jumper clamp.

[0018] As a further improvement of the present invention, the tubular busbar counterweight comprises an end cover, a shell and a weight piece, wherein the weight piece is arranged in the shell and fixed by the end cover and a fastener.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] Compared with the conventional one-point suspension method, the tubular busbar suspension device provided by the present invention shortens the suspension spacing of the tubular busbars in the middle span and adjacent intervals by setting three-point suspension hardware and adjusting the length of the auxiliary cable suspension structure on both sides as needed without changing the length and suspension angle of the insulator string. It can not only solve the problem of excessive deflection of the tubular busbar in the middle span within the interval, but also solve the problem of excessive deflection of the tubular busbar between adjacent interval suspension points.

[0021] Furthermore, the rigid structure of the three-point suspension fittings has fixed points on both sides and a fulcrum similar to a bridge tower in the middle. The two sides are pulled up by the extended suspension structure. The tension is generated by the tightening of the flower rail bolts. The deflection of the tubular busbar pre-arched on the ground can be used during tightening. Its double-sided auxiliary cable suspension structure is equivalent to shortening the spacing between the tubular busbar suspension points on both sides.

[0022] Furthermore, the jumper clamps between adjacent interval tubular busbars are used to absorb the displacement of the tubular busbars due to thermal expansion and contraction, and the tubular busbar counterweights on both sides thereof are used to balance the deflection of the tubular busbars in the mid-span within the interval.

[0023] The above-mentioned tubular busbar suspension device can simultaneously shorten the suspension spacing of the tubular busbars within the interval and between the suspension points of adjacent intervals without increasing the frame, changing the length of the insulator string and the suspension angle, saving space and the amount of steel used for the frame; except for the three-point suspension hardware, the rest of this system is composed of conventional hardware, which is easy to purchase, convenient for construction, and saves investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of a suspension system for reducing the deflection of a suspended tubular busbar according to the present invention;

[0025] Figure 2 It is a schematic diagram of the three-point suspension hardware of the present invention;

[0026] Figure 3 The present invention is a schematic diagram of the internal tubular busbar arrangement of the jumper wire clamp.

[0027] In the figure: 1-shielding ring; 2-connecting plate; 3-basket bolt; 4-U-bolt; 5-extension pull rod; 6-tower-type hanging point hardware; 7-tension hanging point; 8-tubular busbar; 9-jumper clamp; 10-tubular busbar counterweight, 11-hanging hole 110-insulator string; 100-three-point suspension hardware; 200-frame beam; 102-main suspension structure; 101-double-sided auxiliary cable suspension structure; 12-weight hammer.

[0028] B1 is the distance between two adjacent suspension devices; B2 is the distance between two adjacent three-point suspension fittings; B3 is the distance between the double-sided auxiliary cable suspension structure and the main suspension structure. DETAILED DESCRIPTION

[0029] In order to make the purpose and technical solution of the present invention clearer and easier to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0032] See also Figure 1-3 A tubular busbar suspension device includes a three-point suspension fitting 100, a jumper clamp 9 (with a built-in tubular busbar counterweight 10), an insulator string 110 and a tubular busbar 8.

[0033] The jumper wire clamp 9 is arranged below the frame cross beam 200; the ends of two adjacent sections of tubular busbar 8 are connected by the jumper wire clamp 9;

[0034] The two three-point suspension fittings 100 are symmetrically arranged on both sides of the jumper clamp 9 and are respectively connected to two sections of tubular busbars 8;

[0035] The two insulator strings 110 are symmetrically arranged on both sides of the jumper clamp 9, and one end of an insulator string 110 is connected to a three-point suspension fitting 100, and the other end is connected to the hanging point of the frame beam 200.

[0036] See also Figure 1 The upper end of the insulator string 110 is connected to the hanging point of the frame beam 200, and the lower end is connected to the hanging hole 11 on the tower type hanging point hardware 6 of the three-point suspension hardware 100, and the tubular busbar 8 is fastened through the tower type hanging point hardware 6. Two insulator strings 110 form a V-shaped structure within a B1 length interval.

[0037] See also Figure 2 The three-point suspension fitting 100 includes a main suspension structure 102 and a double-sided auxiliary cable suspension structure 101. The main suspension structure 102 includes a tower-type hanging point fitting 6, on which a hanging hole 11 is provided for connecting with an insulator string 110; the double-sided auxiliary cable suspension structure 101 is located on both sides of the main suspension structure 102 and is arranged parallel to the direction of the tubular busbar.

[0038] The double-sided auxiliary cable suspension structure 101 includes a shielding ring 1, a connecting plate 2, a basket bolt 3, a U-bolt 4, an extension rod 5, and a tensioning hanging point 7. The tensioning hanging point 7 is used to be set and fixed on the tubular busbar 8. One end of the connecting plate 2 is hinged to the tensioning hanging point 7, and the other end is connected to the basket bolt 3. The other end of the basket bolt 3 is connected to the U-bolt 4, and the U-bolt 4 is connected to the extension rod 5; the two connecting extension rods 5 on both sides are connected to the top of the main suspension structure 102, forming a triangular structure with the main suspension structure 102 as the high line and the double-sided auxiliary cable suspension structure 101 as the waistline. The tower-type hanging point hardware 6 of the main suspension structure 102 has a fixed hanging point, and the fixed hanging point is set on the tubular busbar 8.

[0039] The double-sided auxiliary cable suspension structure 101 of the three-point suspension hardware 100 extends to both sides of the main suspension structure 102 in parallel with the direction of the tubular busbar. The tubular busbar 8 is tightened by tightening the hanging point 7, and both sides of it are pulled up by the extended suspension structure. The tension is generated by tightening the flower rail bolts 3. The deflection of the tubular busbar 8 pre-arched on the ground can be used during tightening.

[0040] Furthermore, the length of the double-sided auxiliary cable suspension structure 101 can be adjusted by extending the pull rod 5 to achieve the optimal position of the tubular busbar deflection, so as to shorten the tubular busbar suspension spacing and achieve the purpose of reducing the tubular busbar deflection.

[0041] Furthermore, the connecting plate 2, the basket bolts 3 and the U-shaped bolts 4 are placed within the range of the shielding ring 1 to control corona; the extended pull rod 5 is in a hollow circular tube structure to control corona.

[0042] like Figure 1 The tubular busbar suspension device shown, that is, the upper end of the insulator string is connected to the hanging point of the frame crossbeam 200, and the lower end is connected to the hanging hole 11 on the main suspension structure 102 of the three-point suspension hardware 100, and the tubular busbar is fastened by the tower-type hanging point hardware; the double-sided auxiliary cable suspension structure 101 of the three-point suspension hardware 100 extends to both sides of the main suspension structure 102 parallel to the direction of the tubular busbar, and fastens the tubular busbar 8 by tightening the hanging point, and the length of the double-sided auxiliary cable suspension structure 101 can be adjusted by extending the pull rod; the adjacent interval tubular busbars 8 are connected by jumper wire clamps 9, and tubular busbar counterweights 10 are added inside the two sides of the jumper wire clamps 9.

[0043] The rigid structure of the three-point suspension fitting 100 is provided with fixed points on both sides and a support point similar to a bridge tower in the middle. The two sides are pulled up by the extended suspension structure. The tension is generated by the tightening of the flower rail bolts. The deflection of the tubular busbar pre-arched on the ground can be used during tightening. The double-sided auxiliary cable suspension structure 101 is equivalent to shortening the spacing between the tubular busbar suspension points on both sides.

[0044] See also Figure 2-3 The adjacent interval tubular busbars are connected by jumper clamps 9 to absorb the displacement of the tubular busbars due to thermal expansion and contraction; and tubular busbar counterweights 10 are added inside the two sides of the jumper clamps 9 to assist in balancing the deflection of the tubular busbars in the mid-span of the interval.

[0045] The tubular busbar suspension device of the present invention can simultaneously shorten the suspension spacing of the tubular busbars within an interval and between suspension points of adjacent intervals without increasing the frame, changing the length of the insulator string and the suspension angle, saving space and the amount of steel used for the frame; except for the three-point suspension hardware 100, all other hardware are conventional hardware, which is easy to purchase, convenient for construction, and saves investment.

[0046] In summary, the present invention provides a tubular busbar suspension device, comprising a three-point suspension hardware, a jumper wire clamp and an insulator string; the jumper wire clamp is arranged below the frame crossbeam; the ends of two adjacent sections of tubular busbars are connected by the jumper wire clamp; two of the three-point suspension hardware are symmetrically arranged on both sides of the jumper wire clamp, and are respectively connected to the two sections of tubular busbars; two of the insulator strings are symmetrically arranged on both sides of the jumper wire clamp. The upper end of the insulator string is connected to the frame crossbeam hanging point, and the lower end is connected to the hanging hole on the main suspension structure of the three-point suspension hardware, and the tubular busbar is fastened by the tower-type hanging point hardware; the double-sided auxiliary cable suspension structure of the three-point suspension hardware extends parallel to the direction of the tubular busbar to both sides of the main suspension structure, and the tubular busbar is fastened by tightening the hanging point, and the length of the double-sided auxiliary cable suspension structure can be adjusted by extending the pull rod; the adjacent interval tubular busbars are connected by jumper wire clamps, and tubular busbar counterweights are added inside the two sides of the jumper wire clamp. The present invention shortens the suspension spacing of tubular busbars in the middle span and adjacent intervals by setting three-point suspension fittings and adjusting the length of the auxiliary cable suspension structure on both sides as needed without changing the length and suspension angle of the insulator string. It can not only solve the problem of excessive deflection of tubular busbars in the middle span within the interval, but also solve the problem of excessive deflection of tubular busbars between adjacent interval suspension points.

[0047] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A tubular busbar suspension device, characterized in that: It comprises a three-point suspension fitting (100), a jumper wire clamp (9) and an insulator string (110); The two three-point suspension fittings (100) are symmetrically arranged on both sides of the jumper wire clamp (9), and respectively suspend two sections of tubular busbars (8); The jumper wire clamp (9) is arranged below the frame crossbeam (200); the ends of two adjacent sections of tubular busbars (8) are connected via the jumper wire clamp (9); The two insulator strings (110) are symmetrically arranged on both sides of the jumper wire clamp (9), and one end of an insulator string (110) is connected to a three-point suspension fitting (100), and the other end is connected to a hanging point of a frame beam (200); The three-point suspension fitting (100) comprises a main suspension structure (102) and a double-sided auxiliary cable suspension structure (101); The main suspension structure (102) has a lower end connected to the tubular busbar (8), and an upper end connected to the insulator string (110); The double-sided auxiliary cable suspension structures (101) are located on both sides of the main suspension structure (102), parallel to the direction of the tubular busbar and arranged symmetrically, forming a triangular structure for fastening the tubular busbar (8) with the main suspension structure (102) as the high line and the double-sided auxiliary cable suspension structures (101) as the waistline; Tubular busbar counterweights (10) are provided inside both sides of the jumper wire clamp (9).

2. A tubular busbar suspension device according to claim 1, characterized in that: The main suspension structure (102) comprises a tower-type hanging point fitting (6), on which a hanging hole (11) is provided; and a fixed hanging point for being sleeved on the tubular busbar (8) is provided at the bottom of the tower-type hanging point fitting (6).

3. A tubular busbar suspension device according to claim 1, characterized in that: Each side of the double-sided auxiliary cable suspension structure (101) comprises a connecting plate (2), a turnbuckle bolt (3), a U-shaped bolt (4), an extended pull rod (5) and a tensioning hanging point (7); The tensioning hanging point (7) is sleeved and fixed on the tubular busbar (8); one end of the connecting plate (2) is hinged to the tensioning hanging point (7) and the other end is connected to the flower basket bolt (3); the other end of the flower basket bolt (3) is connected to the U-shaped bolt (4); the U-shaped bolt (4) is connected to the extension rod (5); the two extension rods (5) on both sides of the main suspension structure (102) are respectively connected to the two sides of the top of the main suspension structure (102).

4. A tubular busbar suspension device according to claim 3, characterized in that: The extended pull rod (5) is a hollow circular tubular structure.

5. The tubular busbar suspension device according to claim 1, characterized in that: It also comprises a shielding ring (1), wherein the shielding ring (1) is supported and connected to the connecting plate (2), and the connecting plate (2), the basket bolts (3), and the U-shaped bolts (4) are placed within the range of the shielding ring (1).

6. A tubular busbar suspension device according to claim 1, characterized in that: The tubular busbar counterweight (10) comprises an end cover, a shell and a weight piece (12); the weight piece (12) is arranged in the shell and fixed by the end cover and a fastener.

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