Valve hall wall bushing anti-seismic structure, wall bushing, valve hall and converter station

Abstract

The utility model belongs to the technical field of anti-seismic of electrical equipment, and provides a valve hall wall bushing anti-seismic structure, a wall bushing, a valve hall and a converter station, a flange is provided with a plurality of stiffening ribs which can be connected with the bushing, and the flange is connected with the bushing through the stiffening ribs, so that the displacement of the bushing on a shaft in environments such as earthquakes is limited; meanwhile, the first telescopic support and the second telescopic support are arranged at the two ends of the flange correspondingly, the first supporting plate and the second supporting plate can be connected with the valve hall, the damping and shock absorption effects of the sleeve in the axial direction and the radial direction in the earthquake environment and the like are achieved through the arrangement of the first telescopic support and the second telescopic support, and the service life of the sleeve is prolonged on the basis that the anti-seismic performance is guaranteed. The excessive displacement of the sleeve in the horizontal direction and the vertical direction is limited, and the problems that the relative displacement between the capacitor core in the sleeve and the sleeve in the axial direction is too large, and the flange is damaged under the earthquake effect due to the fragile material of the flange can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of earthquake resistance of electric power equipment, and particularly relates to an earthquake-resistant structure of a valve hall wall bushing, the wall bushing, a valve hall and a converter station. Background Art

[0002] Wall bushings are a crucial component of DC transmission converter stations, connecting electrical equipment inside and outside the valve hall. They are typically installed at an angle on the valve hall's steel frame. Conventional wall bushings are long cantilever structures, consisting of an outdoor section and an indoor section. The outdoor and indoor sections are connected by flanges, and a single core of rubber-impregnated paper is placed inside the bushings. Inside the valve hall, the ends of the wall bushings connect to the electrical equipment via flexible connectors.

[0003] Earthquakes have a significant impact on bushing-type electrical equipment within substations and converter stations, particularly susceptible to damage to wall bushings. This is because the wall bushing, a key component connecting the valve tower inside the valve hall with the external DC circuit, is installed in the middle of a steel gable via a flange. The bushing is axially free relative to the flange and the steel gable, acting only as a radial limiter and support. Flexible busbars connect the bushings to the valve tower and other components at both ends. Due to its inherently long structure, it is susceptible to significant structural deformation and displacement under seismic loads, which can even lead to a decrease in internal insulation performance and cause bushing failure. Once an earthquake occurs, the bushing root will be subjected to a large bending moment. At the same time, under the action of an earthquake, relative displacement will occur between the capacitor core and the sleeve inside the wall bushing. If the relative displacement is too large, it will affect the insulation performance between the two, resulting in unstable electrical performance or even a short circuit, damaging the equipment. Ordinary inner and outer bushing connection flanges are relatively fragile due to material reasons and are easily damaged under the action of an earthquake. In addition, due to the requirements of electrical insulation distance, most equipment is placed on a bracket, and the bracket has an amplifying effect on the earthquake. Utility Model Content

[0004] In order to solve the above problems, the present invention proposes a valve hall wall-penetrating sleeve seismic resistant structure, a wall-penetrating sleeve, a valve hall and a converter station. The present invention provides a plurality of stiffening ribs that can be connected to the sleeve on the flange, and connects the flange to the sleeve through the stiffening ribs, thereby limiting the displacement of the sleeve on the axis under earthquake and other environments; at the same time, the first support plate and the second support plate that can be connected to the valve hall are respectively provided at both ends of the flange through the first telescopic support and the second telescopic support, and the provision of the first telescopic support and the second telescopic support satisfies the damping and shock-absorbing effect of the sleeve in the axial and radial directions under earthquake and other environments, and limits the excessive displacement of the sleeve in the horizontal and vertical directions while ensuring the seismic performance.

[0005] According to some embodiments, the first solution of the present utility model provides a valve hall wall bushing seismic resistant structure, which adopts the following technical solutions:

[0006] A valve hall wall bushing seismic resistant structure comprises a first support plate, a second support plate, and a flange arranged between the first support plate and the second support plate;

[0007] A plurality of first telescopic supports are obliquely arranged on the first support plate and a plurality of second telescopic supports are vertically arranged on the second support plate; and a plurality of stiffening ribs are arranged on the flange.

[0008] Furthermore, the first support plate and the second support plate are respectively connected to the sleeves on both sides of the valve hall.

[0009] Furthermore, at least two ends of the first support plate and the second support plate are respectively provided with a plurality of first telescopic supports and a plurality of second telescopic supports.

[0010] Furthermore, the first telescopic support and the second telescopic support on the first support plate are both connected to the valve hall; the first telescopic support and the second telescopic support on the second support plate are both connected to the valve hall.

[0011] Furthermore, a plurality of stiffening ribs are evenly distributed around the circumference of the flange.

[0012] Furthermore, the flange and the sleeve are connected via the stiffening ribs.

[0013] Furthermore, the cross section of the stiffening rib is a right triangle; and the thickness of the stiffening rib gradually increases along the direction from the sleeve to the valve hall.

[0014] According to some embodiments, the second solution of the present invention provides a wall bushing, which adopts the following technical solution:

[0015] A wall bushing comprises a bushing and a valve hall wall bushing seismic resistant structure as described in the first solution and arranged on the bushing.

[0016] According to some embodiments, a third solution of the present invention provides a valve hall wall bushing, which adopts the following technical solution:

[0017] A valve hall comprises a steel structure frame and a valve hall wall sleeve seismic resistant structure as described in the first solution and arranged on the steel structure frame.

[0018] According to some embodiments, a fourth solution of the present invention provides a converter station, which adopts the following technical solution:

[0019] A converter station includes a valve hall, on which is provided a valve hall wall bushing anti-seismic structure as described in the first solution.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model provides a plurality of stiffening ribs on the flange that can be connected to the sleeve, and the flange is connected to the sleeve by the stiffening ribs, thereby limiting the displacement of the sleeve on the axis under environments such as earthquakes; at the same time, the first support plate and the second support plate that can be connected to the valve hall are respectively provided at both ends of the flange through the first telescopic support and the second telescopic support. The provision of the first telescopic support and the second telescopic support satisfies the damping and shock-absorbing effect of the sleeve in the axial and radial directions under environments such as earthquakes. On the basis of ensuring the seismic performance, the excessive displacement of the sleeve in the horizontal and vertical directions is limited, and the problems of excessive relative displacement between the capacitor core and the sleeve in the axial direction inside the sleeve and damage caused by the fragile material of the flange under the action of an earthquake can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 It is a structural schematic diagram of the earthquake-resistant structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the front view of the earthquake-resistant structure of the utility model;

[0025] Figure 3 This is a side structural diagram of the utility model's earthquake-resistant structure;

[0026] Figure 4 This is a schematic structural diagram of the support device of the utility model;

[0027] Figure 5 This utility model Figure 2 A side view of the middle connecting flange in one embodiment;

[0028] Among them: 1. Casing; 2. First support plate; 3. First telescopic support; 4. Second telescopic support; 5. Stiffening rib; 6. Flange; 7. Second support plate; 8. Valve hall. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Example 1:

[0032] like Figure 1 As shown, this embodiment provides a valve hall wall bushing seismic resistance structure, comprising a first support plate 2 and a second support plate 7 that can be connected to the bushing 1, and a flange 6 provided between the first support plate 2 and the second support plate 7;

[0033] A plurality of first telescopic supports 3 are obliquely arranged on the first support plate 2 and a plurality of second telescopic supports 4 are vertically arranged on the second support plate 7 ; a plurality of stiffening ribs 5 are arranged on the flange 6 .

[0034] Specifically, a plurality of stiffening ribs 5 that can be connected to the sleeve 1 are provided on the flange 6, and the flange 6 is connected to the sleeve 1 through the stiffening ribs 5, thereby limiting the axial displacement of the sleeve 1 in environments such as earthquakes; at the same time, the first support plate 2 and the second support plate 7 that can be connected to the valve hall 8 are respectively provided at both ends of the flange 6 through the first telescopic support 3 and the second telescopic support 4. The setting of the first telescopic support 3 and the second telescopic support 4 satisfies the axial and radial damping and shock-absorbing effect of the sleeve 1 in environments such as earthquakes. On the basis of ensuring the seismic performance, the excessive displacement of the sleeve 1 in the horizontal and vertical directions is limited, which can solve the problems of excessive relative displacement between the capacitor core and the sleeve in the axial direction of the sleeve 1, and damage caused by the fragile flange material under the action of an earthquake.

[0035] Optionally, the first support plate 2 and the second support plate 7 can be made of a material such as steel plate, with a through hole formed in the middle. The sleeve 1 passes through the through hole and is fixedly connected by welding or other methods. The first support plate 2 and the second support plate 7 are respectively connected to the sleeve 1 on both sides of the valve hall 8, thereby limiting the axial movement of the sleeve 1.

[0036] Optionally, the first telescopic support 3 and the second telescopic support 4 may include an outer sleeve and an inner sleeve arranged in the outer sleeve, the contents can move freely in the outer sleeve, and a limit block or the like is provided in the outer sleeve to limit the moving distance of the inner sleeve; the first telescopic support 3 and the second telescopic support 4 may also adopt a conventional telescopic rod or other structure, which will not be described in detail here.

[0037] At least two ends of the first support plate 2 and the second support plate 7 are provided with a plurality of first telescopic supports 3 and a plurality of second telescopic supports 4. For example, three first telescopic supports 3 and three second telescopic supports 4 are provided at the upper and lower ends of the first support plate 2 and the second support plate 7, respectively, with the first telescopic supports 3 being arranged at an angle of between 30° and 45° relative to the support plates.

[0038] The first telescopic support 3 and the second telescopic support 4 on the first support plate 2 are both connected to the valve hall 8; and the first telescopic support 3 and the second telescopic support 4 on the second support plate 7 are both connected to the valve hall 8; the arrangement of the first telescopic support 3 and the second telescopic support 4 can provide damping and shock absorption for the casing 1 in the axial and radial directions under earthquake and other environments, thereby ensuring the seismic effect.

[0039] Optionally, a plurality of stiffening ribs 5 are evenly distributed around the circumference of the flange 6. The flange 6 and the sleeve 1 are connected via the stiffening ribs 5, which can limit the axial displacement of the sleeve 1. It is understandable that the flange 6 is connected to the valve hall 8. When an earthquake occurs, the valve hall 8 is deformed and the flange 6 is damaged. At this time, the first support plate 2, the first telescopic support 3, the second telescopic support 4 and the second support plate 7 serve to connect the valve hall 8 and the sleeve 1 and to provide earthquake resistance. Alternatively, the flange 6 is not connected to the valve hall 8, and the stiffening ribs 5 at different positions are connected to the first support plate 2 and the second support plate 7, respectively. When an earthquake occurs, the deformation of the valve hall 8 can be offset by the expansion and contraction of the first telescopic support 3 and the second telescopic support 4, without affecting the flange 6, thereby avoiding the problem of damage to the flange 6.

[0040] Optionally, the cross-section of the stiffening rib 5 is a right triangle; the thickness of the stiffening rib 5 gradually increases along the direction from the sleeve 1 to the valve hall 8, thereby ensuring the connection strength between the stiffening rib 5 and the outer wall of the sleeve 1 while saving material.

[0041] Optionally, a through hole is provided in the middle of the flange 6 for passing the sleeve 1. The valve hall 8 includes a steel structure frame.

[0042] One of the working processes or methods of this embodiment is:

[0043] Weld the stiffening rib 5 to the flange 6, or manufacture an integrally formed flange with the stiffening rib 5; use the flange 6 to fix the sleeve 1 to the wall of the valve hall 8; pass the sleeve 1 through the through holes on the first support plate 2 and the second support plate 7 and fix it; adjust the angle and length of the first telescopic support 3 to ensure that the first telescopic support 3 does not generate stress on the end of the sleeve 1, and weld the first telescopic support 3 to the first support plate 2, the second support plate 7 and the valve hall 8 respectively; adjust the length and angle of the second telescopic support 4 to weld the second telescopic support 4 to the support plate and the valve hall 8 respectively while being perpendicular to the support plate and ensuring that no stress is generated on the end of the sleeve 1.

[0044] The seismic-resistant structure of the valve hall wall bushing in this embodiment is provided with support devices at both ends of the wall bushing, which reduces the seismic response of the wall bushing, meets the seismic resistance requirements and insulation requirements of electrical equipment, improves the seismic performance of the bushing root, limits the axial displacement of the end of the wall bushing, controls the pulling on other equipment within a safe range, meets the insulation requirements, limits the horizontal and vertical displacement of the end of the wall bushing, ensures that the relative displacement between the internal capacitor core and the sleeve end is within a safe range, and realizes the seismic resistance requirements.

[0045] Example 2:

[0046] This embodiment provides a wall bushing, including a bushing 1 and a valve hall wall bushing seismic resistance structure, as described in Example 1, disposed on the bushing 1. Optionally, through holes are formed in the first support plate 2 and the second support plate 7 of the seismic resistance structure, through which the bushing 1 is passed and then welded.

[0047] Example 3:

[0048] This embodiment provides a valve hall, including a steel structural frame and a valve hall wall sleeve seismic resistance structure, as described in Example 1, disposed on the steel structural frame. Optionally, the seismic resistance structure is connected to the steel structural frame on the valve hall 8 via a first telescopic support 3 and a second telescopic support 4.

[0049] Example 4:

[0050] This embodiment provides a converter station, including a valve hall 8 , on which is provided a valve hall wall bushing seismic-resistant structure as described in Example 1. Optionally, the seismic-resistant structure is connected to a steel structure frame on the valve hall 8 via a first telescopic support 3 and a second telescopic support 4 .

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A valve hall wall bushing seismic structure, characterized in that: It comprises a first support plate (2), a second support plate (7), and a flange (6) arranged between the first support plate (2) and the second support plate (7); A plurality of first telescopic supports (3) are arranged obliquely on the first support plate (2) and the second support plate (7), and a plurality of second telescopic supports (4) are arranged vertically; a plurality of stiffening ribs (5) are arranged on the flange (6).

2. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: The first support plate (2) and the second support plate (7) are respectively connected to the sleeves (1) on both sides of the valve hall (8).

3. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: At least two ends of the first support plate (2) and the second support plate (7) are respectively provided with a plurality of first telescopic supports (3) and a plurality of second telescopic supports (4).

4. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: The first telescopic support (3) and the second telescopic support (4) on the first support plate (2) are both connected to the valve hall (8); the first telescopic support (3) and the second telescopic support (4) on the second support plate (7) are both connected to the valve hall (8).

5. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: A plurality of stiffening ribs (5) are evenly distributed around the circumference of the flange (6).

6. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: The flange (6) and the sleeve (1) are connected via the stiffening rib (5).

7. The valve hall wall bushing seismic resistant structure according to claim 1, characterized in that: The cross section of the stiffening rib (5) is a right triangle; and the thickness of the stiffening rib (5) gradually increases in the direction from the sleeve (1) to the valve hall (8).

8. A wall bushing, characterized in that: The invention comprises a sleeve and a valve hall wall sleeve seismic resistant structure as claimed in any one of claims 1 to 7 which is arranged on the sleeve.

9. A valve hall, characterized in that: It comprises a steel structure frame, and a valve hall wall sleeve seismic resistant structure as claimed in any one of claims 1 to 7 arranged on the steel structure frame.

10. A converter station, characterized in that: It comprises a valve hall, on which is provided the valve hall wall sleeve seismic resistant structure according to any one of claims 1 to 7.

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