Anti-fatigue fixing device for converter station insulation terminal

Abstract

The utility model relates to the technical field of insulation terminal fixation, in particular to an anti-fatigue fixing device for a converter station insulation terminal, which comprises a support column, a support plate and a clamp plate, the lower part of the support column is fixedly connected to a support, the support plate is fixedly connected to the upper part of the support column, the support plate transversely extends out of the support column, a semicircular groove I is arranged on the support plate, and the clamp plate is fixedly connected to the support column. The hoop plate is fixedly connected to the supporting plate, a semicircular groove II is formed in the hoop plate, the semicircular groove I and the semicircular groove II are communicated to form a circular hole, and the insulating terminal is clamped in the circular hole formed by the semicircular groove I and the semicircular groove II; on the basis of supporting of the L-shaped fixing support, the supporting column, the supporting plate and the hoop plate are used for fixing the insulating terminal, so that the anti-fatigue effect is achieved, the anti-fatigue capacity of the low-voltage end fixing piece of the insulating terminal is effectively improved, the risk that the support is broken due to fatigue after an original L-shaped fixing support is used for a long time is reduced, and the service life of the L-shaped fixing support is prolonged. And normal and stable operation of equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of insulating terminal fixing technology, specifically to an anti-fatigue fixing device for insulating terminals in converter stations. Background Technology

[0002] The length of the unbalanced CT fiber optic insulated terminal of the DC filter in existing substations or converter stations is relatively long, generally around 10 meters. The low-voltage end of the unbalanced CT fiber optic insulated terminal of the DC filter is fixed by a spring turnbuckle. The length of the unbalanced CT fiber optic insulated terminal of the AC filter is generally between 5 and 8 meters. The low-voltage end of the unbalanced CT fiber optic insulated terminal of the AC filter is fixed by an L-shaped fixing bracket.

[0003] The L-shaped fixing bracket used on the low-voltage end of the insulating terminal is prone to breakage over time, causing the low-voltage end of the insulating terminal to swing freely, resulting in cracking of the stainless steel corrugated pipe and damage to the optical cable sheath.

[0004] Metallographic analysis of the area near the fracture surface of the broken L-shaped bracket revealed no obvious abnormalities in the sample microstructure. However, significant wear marks were visible on the sample surface near the fracture surface, which were also reflected in the macroscopic morphology. This indicates that the fastening bolts of the L-shaped bracket loosened during service. This loosening worsened the working conditions at that location, increased the cyclic load stress amplitude, and the resulting wear exacerbated stress concentration on the bracket surface, leading to the initiation and propagation of fatigue cracks, ultimately resulting in the fracture failure of the L-shaped bracket. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-fatigue fixing device for the insulating terminals of converter stations, which enhances the fatigue resistance of the low-voltage end fixing parts of the insulating terminals, prevents the L-shaped fixing bracket from breaking, and ensures the normal and stable operation of the equipment.

[0006] In the prior art, insulating terminals are fixedly connected to the support by an L-shaped fixing bracket. The present invention provides a fatigue-resistant fixing device for insulating terminals in a converter station, comprising a support column, a support plate, and a clamping plate. The lower part of the support column is fixedly connected to the support, and the support plate is fixedly connected to the upper part of the support column. The support plate extends laterally out of the support column and is provided with a semi-circular groove I. The clamping plate is fixedly connected to the support plate and is provided with a semi-circular groove II. The semi-circular groove I and the semi-circular groove II communicate to form a circular hole, and the insulating terminal is clamped into the circular hole formed by the semi-circular groove I and the semi-circular groove II.

[0007] Furthermore, the support plate includes a main plate, a semi-circular groove I is provided at the front of the main plate, and a waist-shaped hole II is provided at the rear of the main plate. The waist-shaped hole II is provided along the length direction of the main plate. The support column includes a bottom column and a top block. The top block is fixedly connected to the top of the bottom column. The top block is provided with a through hole I, which penetrates the top block. The through hole I and the waist-shaped hole II are connected by bolts and nuts.

[0008] Furthermore, the main board is provided with through holes II, and there are two sets of through holes II. The two sets of through holes II are symmetrical about the axis of the semicircular groove I. Each set of through holes II has multiple through holes II, and the multiple through holes II in each set are linearly and evenly distributed along the width direction of the main board. The clamp plate is provided with through holes III, and there are two sets of through holes III. The two sets of through holes III are symmetrical about the axis of the semicircular groove II. Each set of through holes III has multiple through holes III, and the multiple through holes III in each set are linearly and evenly distributed along the width direction of the clamp plate. The multiple through holes III in the two sets on the clamp plate are coaxial with the multiple through holes II in the two sets on the main board. Each through hole III is fixedly connected to each through hole II by bolts and nuts.

[0009] Furthermore, two oblong holes II are provided on the main board, and the two oblong holes II are linearly and evenly distributed along the width direction of the main board. Two through holes I are provided on the top block, and the two through holes I are respectively connected to the two oblong holes II by bolts and nuts.

[0010] Furthermore, the support plate includes a side plate and a stiffener plate. One end of the side plate is fixedly connected to the rear side of the main board, and the other end of the side plate is fixedly connected to the front end of the main board at a right angle. The stiffener plate is fixedly connected between the side plate and the main board, and the end of the stiffener plate away from the side plate is fixedly connected to the outer wall of the semi-circular groove I.

[0011] Furthermore, the base column includes side plate I and side plate II. One end of side plate I and one end of side plate II are fixedly connected at a right angle. The direction of side plate II is perpendicular to the direction of the support plate. Side plate II is provided with a waist-shaped groove I, which is set along the height direction of the base column. Side plate II is connected to the side wall of the support away from the L-shaped fixed bracket. The waist-shaped groove I is connected to the support by bolts and nuts. The support is provided with holes for bolts to pass through.

[0012] Furthermore, each of the connecting bolts between the through hole I and the oblong hole II is connected to two nuts.

[0013] Furthermore, each of the connecting bolts of through hole III and through hole II is connected to two nuts.

[0014] Furthermore, the waist-shaped groove I is connected to the support by multiple bolts, and the support is provided with holes for multiple bolts to pass through, with two nuts connected to each bolt.

[0015] The beneficial effects of this utility model are as follows: Based on the L-shaped fixed bracket support, this utility model uses support columns, support plates and clamp plates to fix the insulating terminals, thereby playing a role in fatigue resistance, effectively improving the fatigue resistance of the low-voltage end fixing component of the insulating terminal, reducing the risk of the original L-shaped fixed bracket breaking due to fatigue after long-term use, and ensuring the normal and stable operation of the equipment. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the usage state of this utility model;

[0017] Figure 2 This utility model Figure 1 AA section view;

[0018] Figure 3 This utility model Figure 1 BB cross-sectional view;

[0019] Figure 4 This is a schematic diagram of the structure of the support column of this utility model;

[0020] Figure 5 This utility model Figure 4 CC section view;

[0021] Figure 6 This utility model Figure 4 DD sectional view;

[0022] Figure 7 This is a structural diagram of the support plate of the utility model;

[0023] Figure 8 This utility model Figure 7 EE sectional view;

[0024] Figure 9 This is a schematic diagram of the structure of the clamp plate of this utility model;

[0025] Figure 10 This utility model Figure 9 FF sectional view.

[0026] In the diagram: 1. Insulating terminal; 2. Support; 3. L-shaped fixing bracket; 4. Support column; 401. Bottom column; 4011. Side plate I; 4012. Side plate II; 4013. Waist-shaped groove I; 402. Top block; 4021. Through hole I; 5. Support plate; 501. Main plate; 5011. Semi-circular groove I; 5012. Waist-shaped hole II; 4013. Through hole II; 502. Side plate; 503. Rib plate; 6. Clamp plate; 601. Semi-circular groove II; 602. Through hole III. Detailed Implementation

[0027] like Figures 1-10As shown, this utility model discloses a fatigue-resistant fixing device for insulating terminals in a converter station, comprising a support column 4, a support plate 5, and a clamping plate 6. The lower part of the support column 4 is fixedly connected to a support 2, and the support plate 5 is fixedly connected to the upper part of the support column 4. The support plate 5 extends laterally out of the support column 4 and has a semi-circular groove I 5011. The clamping plate 6 is fixedly connected to the support plate 5 and has a semi-circular groove II 601. The semi-circular grooves I 5011 and II 601 communicate to form a circular hole, and the insulating terminal 1 is clamped into the circular hole formed by the semi-circular grooves I 5011 and II 601. The support plate 5 includes a main plate 501, with the semi-circular groove I 5011 located at the front of the main plate 501 and a waist-shaped hole II 5 at the rear of the main plate 501. 012, the waist-shaped hole II 5012 is set along the length direction of the main board 501. The support column 4 includes a bottom column 401 and a top block 402. The top block 402 is fixedly connected to the top of the bottom column 401. The top block 402 is provided with a through hole I 4021, which penetrates the top block 402. The through hole I 4021 is connected to the waist-shaped hole II 5012 by bolts and nuts. There are two waist-shaped holes II 5012 on the main board 501, which are linearly and evenly distributed along the width direction of the main board 501. There are two through holes I 4021 on the top block 402, which are respectively connected to the two waist-shaped holes II 5012 by bolts and nuts. The main board 501 is provided with a through hole II 5013. II5013 has two sets of through holes, symmetrical about the axis of the semicircular groove I5011. Each set of through holes II5013 has multiple through holes II5013, which are linearly and evenly distributed along the width of the main board 501. The clamp plate 6 has two sets of through holes III602, symmetrical about the axis of the semicircular groove II601. Each set of through holes III602 has multiple through holes III602, which are linearly and evenly distributed along the width of the clamp plate 6. The multiple through holes III602 in the two sets on the clamp plate 6 are coaxial with the multiple through holes II5013 in the two sets on the main board 501. Each through hole III602 is coaxial with each through hole II5013. All 013 are fixedly connected by bolts and nuts. In this embodiment, each group of through holes II 5013 includes two through holes II 5013, and each group of through holes III 602 includes two through holes III 602. The bottom column 401 includes a side plate I 4011 and a side plate II 4012. One end of the side plate I 4011 and one end of the side plate II 4012 are fixedly connected at a right angle. The direction of the side plate II 4012 is perpendicular to the direction of the support plate 5. The side plate II 4012 is provided with a waist-shaped groove I 4013. The waist-shaped groove I 4013 is set along the height direction of the bottom column 401. The side plate II 4012 is connected to the side wall of the support 2 away from the L-shaped fixed bracket 2. The waist-shaped groove I 4013 is connected to the support 2 by bolts and nuts. The support 2 is provided with holes for bolts to pass through.

[0028] The support plate 5 includes a side plate 502 and a stiffener 503. One end of the side plate 502 is fixedly connected to the rear side of the main plate 501, and the other end of the side plate 502 is fixedly connected to the front end of the main plate 501 at a right angle. The stiffener 503 is fixedly connected between the side plate 502 and the main plate 501, and the end of the stiffener 503 away from the side plate 502 is fixedly connected to the outer wall of the semi-circular groove I 5011.

[0029] Each through hole I 4021 and the connecting bolt of the waist-shaped hole II 5012 are connected with two nuts; each through hole III 602 and each through hole II 5013 are connected with two nuts; the waist-shaped groove I 4013 and the support 2 are connected with multiple bolts, and the support 2 is provided with holes for multiple bolts to pass through, and each bolt is connected with two nuts.

[0030] In the prior art, the insulating terminal 1 is fixedly connected to the support 2 by the L-shaped fixing bracket 3. In this invention, the insulating terminal 1 is fixed by the support column 4, the support plate 5 and the clamp plate 6 on the basis of the L-shaped fixing bracket 3, thereby playing a role in fatigue resistance, effectively preventing the breakage of the L-shaped fixing bracket 3, and ensuring the normal and stable operation of the equipment.

[0031] The setting of the waist-shaped hole II 5012 allows the position of the support column 4 to be adjusted when connected to the support plate 5, which is convenient for the installation position of the insulating terminal 1 in different situations, and also facilitates installation to avoid jamming; the setting of two through holes I 4021 and two waist-shaped holes II 5012 effectively improves the connection stability of the support column 4 and the support plate 5.

[0032] The circular holes formed by the semicircular grooves I 5011 and II 601 are generally clamped onto the metal flange of the insulating terminal 1 to fix the insulating terminal 1. Each through hole III 602 and each through hole II 5013 are fixedly connected by bolts and nuts, thereby realizing the fixed connection between the support plate 5 and the clamp plate 6.

[0033] Because the support plate 5 is arranged horizontally, the overall structural strength of the support plate 5 is effectively improved by setting the side plate 502 and the stiffening plate 503, preventing the support plate 5 from deforming or breaking during use.

[0034] The waist-shaped groove I4013 facilitates the adjustment of the installation height of the support column 4, making this utility model applicable to the installation position of the insulating terminal 1 in different situations.

[0035] The bolts and nuts connecting the waist-shaped groove I4013 and the support 2 should be carefully designed to avoid interference with the bolts and nuts connecting the L-shaped fixed bracket 3 and the support 2.

[0036] In this invention, all fastening bolts are connected to two nuts, so that the two nuts are locked together, thereby preventing the bolts from becoming loose.

Claims

1. A fatigue-resistant fixing device for insulating terminals in a converter station, wherein the insulating terminal (1) is fixedly connected to the support (2) via an L-shaped fixing bracket (3), characterized in that: It includes a support column (4), a support plate (5) and a clamp plate (6). The lower part of the support column (4) is fixedly connected to the support (2), and the support plate (5) is fixedly connected to the upper part of the support column (4). The support plate (5) extends laterally out of the support column (4). The support plate (5) is provided with a semi-circular groove I (5011). The clamp plate (6) is fixedly connected to the support plate (5). The clamp plate (6) is provided with a semi-circular groove II (601). The semi-circular groove I (5011) and the semi-circular groove II (601) are connected to form a circular hole. The insulating terminal (1) is clamped in the circular hole formed by the semi-circular groove I (5011) and the semi-circular groove II (601).

2. The anti-fatigue fixing device for insulating terminals of a converter station according to claim 1, characterized in that: The support plate (5) includes a main plate (501), a semi-circular groove I (5011) is provided at the front of the main plate (501), and a waist-shaped hole II (5012) is provided at the rear of the main plate (501). The waist-shaped hole II (5012) is provided along the length direction of the main plate (501). The support column (4) includes a bottom column (401) and a top block (402). The top block (402) is fixedly connected to the top of the bottom column (401). The top block (402) is provided with a through hole I (4021). The through hole I (4021) passes through the top block (402). The through hole I (4021) and the waist-shaped hole II (5012) are connected by bolts and nuts.

3. The anti-fatigue fixing device for insulating terminals of a converter station according to claim 2, characterized in that: The main board (501) is provided with through holes II (5013), and there are two sets of through holes II (5013). The two sets of through holes II (5013) are symmetrical about the axis of the semi-circular groove I (5011). Each set of through holes II (5013) is provided with multiple through holes II (5013). The multiple through holes II (5013) in each set are linearly and evenly distributed along the width direction of the main board (501). The clamp plate (6) is provided with through holes III (602), and there are two sets of through holes III (602). Hole Ⅲ (602) is symmetrical about the axis of semi-circular groove Ⅱ (601). Each group of through holes Ⅲ (602) is provided with multiple through holes Ⅲ (602). The multiple through holes Ⅲ (602) of each group are linearly and evenly distributed along the width direction of clamp plate (6). The multiple through holes Ⅲ (602) of the two groups on clamp plate (6) are coaxial with the multiple through holes Ⅱ (5013) of the two groups on main plate (501). Each through hole Ⅲ (602) and each through hole Ⅱ (5013) are fixedly connected by bolts and nuts.

4. The anti-fatigue fixing device for insulating terminals of a converter station according to claim 3, characterized in that: Two waist-shaped holes II (5012) are provided on the main board (501), and the two waist-shaped holes II (5012) are linearly and evenly distributed along the width direction of the main board (501). Two through holes I (4021) are provided on the top block (402), and the two through holes I (4021) are respectively connected to the two waist-shaped holes II (5012) by bolts and nuts.

5. A fatigue-resistant fixing device for insulating terminals in a converter station according to any one of claims 2-4, characterized in that: The support plate (5) includes a side plate (502) and a stiffener (503). One end of the side plate (502) is fixedly connected to the rear side of the main plate (501), and the other end of the side plate (502) is fixedly connected to the front end of the main plate (501) at a right angle. The stiffener (503) is fixedly connected between the side plate (502) and the main plate (501), and the end of the stiffener (503) away from the side plate (502) is fixedly connected to the outer wall of the semi-circular groove I (5011).

6. The anti-fatigue fixing device for insulating terminals of a converter station according to claim 5, characterized in that: The base column (401) includes a side plate I (4011) and a side plate II (4012). One end of the side plate I (4011) and one end of the side plate II (4012) are fixedly connected at a right angle. The direction of the side plate II (4012) is perpendicular to the direction of the support plate (5). The side plate II (4012) is provided with a waist-shaped groove I (4013). The waist-shaped groove I (4013) is set along the height direction of the base column (401). The side plate II (4012) is connected to the side wall of the support (2) away from the L-shaped fixed bracket (3). The waist-shaped groove I (4013) is connected to the support (2) by bolts and nuts. The support (2) is provided with holes for bolts to pass through.

7. A fatigue-resistant fixing device for insulating terminals of a converter station according to any one of claims 2, 3, 4 or 6, characterized in that: Each of the connecting bolts of the through hole I (4021) and the waist-shaped hole II (5012) is connected with two nuts.

8. A fatigue-resistant fixing device for insulating terminals of a converter station according to any one of claims 3 or 4, characterized in that: Each through hole III (602) and each through hole II (5013) connecting bolt is connected to two nuts.

9. The anti-fatigue fixing device for insulating terminals of a converter station according to claim 6, characterized in that: The waist-shaped groove I (4013) and the support (2) are connected by multiple bolts. The support (2) is provided with holes for multiple bolts to pass through, and each bolt is connected with two nuts.

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