Hinge assembly for corrugated pipe

Abstract

The utility model belongs to the field of high-voltage power transmission and distribution, and discloses a hinge assembly for a corrugated pipe, which is arranged on a self-adaptive insulated closed shell assembly in a split manner, and only a damaged part needs to be replaced when maintenance and replacement are needed, so that the related maintenance cost is remarkably reduced, and the maintenance cost is reduced. Comprising a first hinge rod and a second hinge rod which are located outside the self-adaptive insulated closed shell assembly, the first hinge rod and the second hinge rod are detachably connected with a first insulated closed shell and a second insulated closed shell respectively, and the first hinge rod and the second hinge rod are connected in a hinged mode. And the hinge axis is vertical to the extension directions of the first insulated closed shell and the second insulated closed shell.

Description

Technical Field

[0001] The utility model belongs to the field of high-voltage power transmission and distribution, and basically relates to a hinge component for a corrugated pipe. Background Art

[0002] An insulated enclosure is a high-voltage, high-current power transmission device that uses gas (usually SF6 or SF6 mixed gas) as an insulating medium and a metal shell that encloses the conductive rod. It has the advantages of large transmission capacity, low unit loss, low environmental impact, high operational reliability, and space saving. As a specific application, it is used as a GIL unit shell or GIS busbar shell in the field of high-voltage power transmission and distribution. However, the application scenarios of the GIL unit shell or GIS busbar shell are complex, and the total length formed by the connection of the insulated enclosure is long, which leads to serious pipeline fatigue or deformation, and even causes foundation cracking and equipment leakage, which in turn leads to equipment shutdown and affects the safe and stable operation of the power grid.

[0003] In view of the above problems, during long-distance operation, an adaptively deformable bellows is arranged between two adjacent insulating closed shells to form an adaptive insulating closed shell assembly. The characteristic that the bellows angle can adaptively deflect is utilized to compensate for the expansion and contraction caused by thermal expansion and contraction. However, due to the internal inflation of the adaptive insulating closed shell assembly, if the volume of the bellows changes due to deformation, the bellows will expand due to the internal pressure change. Therefore, a device is required to limit the influence of the internal pressure change of the bellows on the bellows, and to meet the requirement of the angle deflection of the bellows. In order to achieve this goal, at present, a hinge structure welded on the end flanges at both ends of the bellows is adopted, so that the bellows can swing laterally relative to the extension axis with the thermal expansion and contraction of the two insulating closed shells, that is, one side of the bellows expands and the other side contracts, similar to the expansion and contraction of the two sides of an accordion, so that the overall volume of the bellows remains unchanged during adaptive deformation and will not be affected by the internal pressure change.

[0004] However, the shortcomings of this implementation method are: 1. Since the hinge structure and the bellows are connected by welding, when the bellows or the hinge structure needs to be replaced, the entire structure needs to be replaced, resulting in high maintenance costs; 2. The deflection angle of the hinge structure and the bellows cannot be observed intuitively, which is inconvenient for related operation and maintenance work; 3. The welding section of the hinge structure and the bellows is relatively small due to the size limitation of the end flange, which makes the welding quality requirements of the weld higher. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a hinge assembly for a bellows, which is arranged in a split type on an adaptive insulating closed shell assembly. When repair or replacement is required, only the damaged part needs to be replaced, thereby significantly reducing the related repair costs.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hinge assembly for a bellows is used for an adaptive insulating closed shell assembly, wherein the adaptive insulating closed shell assembly is a first insulating closed shell and a second insulating closed shell movably connected by a bellows, and the adjacent ends of the first insulating closed shell and the second insulating closed shell both have end flanges, and is characterized in that it includes: a first hinge rod and a second hinge rod located outside the adaptive insulating closed shell assembly, the first hinge rod and the second hinge rod are respectively detachably connected to the first insulating closed shell and the second insulating closed shell, the first hinge rod and the second hinge rod are hingedly connected, and the hinge axis is perpendicular to the extension direction of the first insulating closed shell and the second insulating closed shell.

[0008] Preferably, the utility model also includes a hinge shaft guard plate and a hinge pin shaft, the hinge shaft guard plate is fixed on the second hinge rod, and part of the hinge shaft guard plate overlaps with part of the first hinge rod along the hinge axis, part of the hinge shaft guard plate is used as the overlapping part, and part of the first hinge rod is used as the hinge part, and the hinge pin shaft hinges the first hinge rod and the second hinge rod through the overlapping part.

[0009] Furthermore, the utility model also includes a torsion angle measuring ruler, including a ruler body and an indicating vernier rod hingedly arranged on the ruler body, the ruler body is fixed on the first hinged rod, and the ruler body has a torsion angle scale; one end of the indicating vernier rod is fixed on the overlapping part, and the other end points to the torsion angle scale, and the indicating vernier rod is rotatable relative to the ruler body.

[0010] Preferably, the utility model also includes a pair of flange fixing plates, which are respectively fixed on the surfaces of the first hinged rod and the second hinged rod, and the pair of flange fixing plates are respectively detachably arranged on the opposite flange surfaces of the end flanges of the first insulating closed shell and the second insulating closed shell.

[0011] Furthermore, the flange fixing plate also has reinforcing protruding ribs, so that a pair of flange fixing plates have a "T"-shaped joining surface on the first insulating closed shell and the second insulating closed shell.

[0012] Preferably, the first insulating closed shell and the second insulating closed shell are both GIL unit shells.

[0013] Preferably, the first insulating closed shell and the second insulating closed shell are both GIS busbar shells.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Because the hinge assembly for the corrugated pipe of the utility model includes a first hinge rod and a second hinge rod located outside the adaptive insulating closed shell assembly, the first hinge rod and the second hinge rod are respectively detachably connected to the first insulating closed shell and the second insulating closed shell, the first hinge rod and the second hinge rod are hingedly connected, and the hinge axis is perpendicular to the extension direction of the first insulating closed shell and the second insulating closed shell. Therefore, the utility model adopts a split arrangement on the adaptive insulating closed shell assembly. When maintenance and replacement are required, only the damaged part needs to be replaced, thereby significantly reducing the relevant maintenance costs.

[0016] 2. Because the utility model also includes a torsion angle ruler, including a ruler body and an indicating cursor rod hingedly arranged on the ruler body, the ruler body is fixed on the first hinged rod, and the ruler body has a torsion angle scale; one end of the indicating cursor rod is fixed on the overlapping part, and the other end points to the torsion angle scale, and the indicating cursor rod is rotatable relative to the ruler body, that is, when the second hinged rod rotates relative to the first hinged rod, the indicating cursor rod fixed on the second hinged rod rotates relative to the ruler body fixed on the second hinged rod, and indicates the rotation angle of the second insulating closed shell relative to the first insulating closed shell on the torsion angle scale. Therefore, the utility model can directly observe the adaptive torsion angle of the adaptive insulating closed shell assembly through the torsion angle ruler, thereby facilitating the implementation of related operation and maintenance work.

[0017] 3. Because the flange fixing plate of the utility model also has reinforcing protruding ribs, a pair of flange fixing plates have a "T"-shaped bonding surface on the first insulating closed shell and the second insulating closed shell. Therefore, the flange fixing plate is greatly extended to increase the surface area of ​​the end flange, thereby providing a larger bonding surface for the hinge structure and improving the assembly stability of the hinge structure on the adaptive insulating closed shell assembly.

[0018] 4. Because the first insulating closed shell and the second insulating closed shell of the utility model are both GIL unit shells; or the first insulating closed shell and the second insulating closed shell are both GIL unit shells, the utility model can be applied not only to GIL modules, but also to GIS related modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the implementation of the hinge assembly for the bellows according to the embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a hinge assembly for a bellows according to an embodiment of the utility model;

[0021] Figure 3 for Figure 2 Side view of

[0022] Figure 4A schematic diagram of a torsion angle measuring ruler according to an embodiment of the present utility model;

[0023] In the figure: 100, hinge assembly for bellows, G, adaptive insulating closed shell assembly, G1, first insulating closed shell, G2, second insulating closed shell, G3, bellows, G4, high-strength bolt assembly, 1, first hinged rod, 11, hinged part, 2, second hinged rod, 3, hinge shaft guard plate, 31, overlapping part, 4, hinge pin, 5, torque angle ruler, 51, ruler body, 52, indicating vernier rod, 6, flange fixing plate, 61, strengthening protruding ribs. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and drawings specifically illustrate the hinge assembly for the bellows of the present invention. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0025] <Example 1>

[0026] like Figure 1 As shown, the adaptive insulating closed shell assembly G in this embodiment is a first insulating closed shell G1 and a second insulating closed shell G2 movably connected by a bellows G3, and the adjacent ends of the first insulating closed shell G1 and the second insulating closed shell G2 both have end flanges (not shown in the drawings). Specifically, at least one bellows hinge assembly 100 is detachably arranged on the adaptive insulating closed shell assembly G through a threaded connection between a high-strength bolt assembly G4 and the end flange.

[0027] The first insulating closed shell G1 and the second insulating closed shell G2 are both GIL unit shells.

[0028] like Figure 2 and Figure 3 As shown, the hinge assembly 100 for the corrugated pipe includes a first hinge rod 1, a second hinge rod 2, a hinge shaft guard plate 3, a hinge pin shaft 4, a torsion angle measuring ruler 5 and a flange fixing plate 6.

[0029] The first articulated rod 1 and the second articulated rod 2 are both located outside the adaptive insulating closed shell assembly G, and the first articulated rod 1 and the second articulated rod 2 are detachably connected to the first insulating closed shell G1 and the second insulating closed shell G2 respectively. The first articulated rod 1 and the second articulated rod 2 are hingedly connected, and the articulation axis is perpendicular to the extension direction of the first insulating closed shell G1 and the second insulating closed shell G2. Specifically, the adaptive insulating closed shell assembly G has a circular cross-section, and the articulation axis passes through the center of the circular cross-section.

[0030] The hinge shaft guard plate 3 is overlapped and fixed on the second hinge rod 2, and part of the hinge shaft guard plate 3 overlaps with part of the first hinge rod 1 along the hinge axis. This part of the hinge shaft guard plate 3 is used as the overlapping part 31, and this part of the first hinge rod 1 is used as the hinge part 11. In this embodiment, the number of hinge shaft guard plates 3 is two, which are respectively located on the opposite sides of the second hinge rod 2 along the hinge axis to form a clamp for the hinge part 11.

[0031] The hinge pin 4 hinges the first hinge rod 1 and the second hinge rod 2 by passing through the overlapped portion 31 and the hinge portion 11 at the same time.

[0032] like Figure 4 As shown, the torsion angle ruler 5 includes a ruler body 51 and an indicating cursor rod 52.

[0033] The ruler body 51 is fixed on the solid surface of the non-hinged portion 11 of the first hinged rod 1, and the ruler body 51 has a torsion angle scale (not shown in the drawings). The indicating cursor rod 52 is hingedly arranged on the ruler body 51 and is rotatable relative to the ruler body 51. One end of the indicating cursor rod 52 is fixed on the overlapping portion 31, and the other end points to the torsion angle scale. Therefore, when the second hinged rod 2 rotates relative to the first hinged rod 1, the torsion angle scale value indicated by the other end of the indicating cursor rod 52 is the rotation angle of the second hinged rod 2 relative to the first hinged rod 1.

[0034] There is a pair of flange fixing plates 6, which are respectively fixed on the surfaces of the first hinged rod 1 and the second hinged rod 2. At the same time, a pair of flange fixing plates 6 are respectively detachably arranged on the opposite flange surfaces of the end flanges of the first insulating closed shell G1 and the second insulating closed shell G2 through high-strength bolt assemblies G4. Specifically, in the extension direction of the adaptive insulating closed shell assembly G, one end of the first hinged rod 1 is detachably arranged on the flange end surface of the first insulating closed shell G1 through the flange fixing plate 6, and the other end forms a hinged portion 11; one end of the first hinged rod 2 is detachably arranged on the flange end surface of the second insulating closed shell G2 through the flange fixing plate 6, and the other end overlaps the hinge shaft guard plate 3. Specifically, the flange fixing plate 6 is fixed to the first hinged rod 1 and the second hinged rod 2 by welding.

[0035] Specifically, the contour surface of the flange fixing plate 6 assembled on the end flange has an avoidance gap with the corresponding weld of the end flange on the GIL, so that the flange fixing plate 6 assembled on the end flange avoids the weld of the end flange on the GIL, and the flange fixing plate 6 can provide a larger bearing surface than the end flange. In this embodiment, the material of the flange fixing plate 6 is 304, 316 stainless steel, or other high-strength anti-corrosion materials, and the flange fixing plate 6 has two pairs of threaded holes threadedly connected to the end flange.

[0036] The flange fixing plate 6 also has reinforcing protruding ribs 61, so that a pair of flange fixing plates 6 have a "T"-shaped joint surface on the first hinge rod 1 and the second hinge rod 2. Specifically, the reinforcing protruding ribs 61 of the pair of flange fixing plates 6 protrude toward the outside of the opposite sides of the corrugated tube G3 respectively.

[0037] <Example 2>

[0038] In the second embodiment, the same symbols are given to the same structures as those in the first embodiment, and the same descriptions are omitted.

[0039] In the second embodiment, the hinge assembly 100 for the bellows is different from that in the first embodiment in that:

[0040] The first insulating closed shell G1 and the second insulating closed shell G2 are both GIS busbar shells.

[0041] That is, the hinge assembly 100 for the bellows can be applied not only to the GIL module but also to the related modules of GIS.

[0042] The above-mentioned implementation modes are preferred cases of the present utility model and are not used to limit the protection scope of the present utility model. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. A bellows hinge assembly for an adaptive insulating closed housing assembly, wherein the adaptive insulating closed housing assembly comprises a first insulating closed housing and a second insulating closed housing movably connected through a bellows, and the first insulating closed housing and the second insulating closed housing have end flanges at their adjacent ends, characterized in that: include: A first hinged rod and a second hinged rod are located outside the adaptive insulating closed shell assembly, and the first hinged rod and the second hinged rod are detachably connected to the first insulating closed shell and the second insulating closed shell respectively. The first hinged rod and the second hinged rod are hingedly connected, and the hinge axis is perpendicular to the extension direction of the first insulating closed shell and the second insulating closed shell.

2. The hinge assembly for a corrugated pipe according to claim 1, characterized in that: Also includes: Hinge shaft guard and hinge pin, The hinge shaft guard plate is fixed on the second hinge rod, and part of the hinge shaft guard plate overlaps with part of the first hinge rod along the hinge axis. The part of the hinge shaft guard plate is used as the overlapping part, and the part of the first hinge rod is used as the hinge part. The hinge pin hinges the first hinge rod and the second hinge rod through the overlapping part.

3. The hinge assembly for a corrugated pipe according to claim 2, characterized in that: Also includes: The torsion angle measuring ruler comprises a ruler body and an indicating cursor rod hingedly arranged on the ruler body. The ruler body is fixed on the first hinge rod, and the ruler body has a torsion angle scale; one end of the indicating cursor rod is fixed on the overlapping part, and the other end points to the torsion angle scale, and the indicating cursor rod is rotatable relative to the ruler body.

4. The hinge assembly for a corrugated pipe according to claim 1, characterized in that: Also includes: A pair of flange fixing plates are respectively fixed on the surfaces of the first hinged rod and the second hinged rod, and the pair of flange fixing plates are respectively detachably arranged on the opposite flange surfaces of the end flanges of the first insulating closed shell and the second insulating closed shell.

5. The hinge assembly for a corrugated pipe according to claim 4, characterized in that: in, The flange fixing plate also has reinforcing protruding ribs, so that the pair of flange fixing plates have a "T"-shaped joining surface on the first insulating closed shell and the second insulating closed shell.

6. The hinge assembly for a corrugated pipe according to any one of claims 1 to 5, characterized in that: in, The first insulating closed shell and the second insulating closed shell are both GIL unit shells.

7. The hinge assembly for a corrugated pipe according to any one of claims 1 to 5, characterized in that: in, The first insulating closed shell and the second insulating closed shell are both GIS busbar shells.

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