Limiting device of shock isolation device

Abstract

The invention provides a limiting device of a shock isolation device. The limiting device comprises a first horizontal limiting piece, a vertical limiting piece and a second horizontal limiting piece which are sequentially connected from bottom to top. The bottom of the first horizontal direction limiting piece is connected with a foundation of the transformer, and the top of the second horizontal direction limiting piece is connected with electrical equipment; the first horizontal direction limiting piece and the second horizontal direction limiting piece each comprise a horizontal sliding rail structure and a horizontal limiting structure, and the sliding directions of the horizontal sliding rail structures of the first horizontal direction limiting piece and the second horizontal direction limiting piece intersect on the horizontal projection plane. The vertical direction limiting piece comprises a vertical sliding rail structure and a vertical limiting structure and is used for limiting the displacement stroke of the shock isolation device when the displacement of the shock isolation device exceeds the limit, and equipment stability is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of disaster prevention and reduction of electric power facilities, and in particular to a limiting device of a seismic isolation device. Background Art

[0002] Due to the uneven distribution of energy bases and power loads, a large number of substations (converter stations) need to be built in areas with high seismic intensity and poor seismic resistance. With the demand for substations (converter stations) to be built in areas with peak seismic acceleration ≥ 0.5g, high requirements are placed on the seismic resistance of the electrical equipment in the station.

[0003] Currently, most projects use base isolation technology to improve the overall seismic performance of transformer-type electrical equipment. Isolation technology can greatly improve the seismic resistance of equipment such as transformers without changing the original structure of the equipment and at a low cost. Its main working principle is to dissipate seismic energy through the horizontal and vertical displacement of the isolation device under the action of an earthquake, thereby improving the seismic resistance of electrical equipment.

[0004] Under the actual earthquake action, if the design operating conditions of the seismic isolation device are exceeded, the displacement of the seismic isolation device may exceed the limit, affecting the overall stability of the electrical equipment. A limit device for the seismic isolation device is needed. Summary of the invention

[0005] In order to solve the problem that the seismic isolation device may be displaced in extreme cases, the present invention proposes a limit device for the seismic isolation device, the limit device comprising: a first horizontal limit member, a vertical limit member, and a second horizontal limit member connected in sequence from bottom to top;

[0006] The bottom of the first horizontal limiter is connected to the foundation of the transformer, and the top of the second horizontal limiter is connected to the electrical equipment;

[0007] The first horizontal direction limiting member and the second horizontal direction limiting member both include a horizontal slide rail structure and a horizontal limiting structure, and the sliding directions of the horizontal slide rail structures of the first horizontal direction limiting member and the second horizontal direction limiting member intersect on a horizontal projection plane;

[0008] The vertical limiting member includes a vertical slide rail structure and a vertical limiting structure.

[0009] Preferably, the vertical slide rail structure includes: a limit shaft and a limit cylinder sleeved on the outside of the limit shaft, the top end of the limit shaft is connected to the second horizontal direction limit piece, and the bottom end of the limit cylinder is connected to the first horizontal direction limit piece; the limit shaft moves vertically in the limit cylinder.

[0010] Preferably, the vertical limiting structure is arranged in the vertical slide rail structure, and the vertical limiting structure comprises: a step surface protruding inwardly arranged on the top of the inner wall of the limiting cylinder, and a step surface protruding outwardly arranged on the bottom of the limiting shaft.

[0011] Preferably, the horizontal slide rail structure comprises: a sliding mechanism and a guide mechanism that are slidably connected;

[0012] The sliding mechanism is connected to the vertical limiter, and the guiding mechanism is connected to the electrical device.

[0013] Preferably, the sliding mechanism comprises: a square plate connected to the vertical direction limiter and a plurality of guide rail slots connected to the square plate.

[0014] Preferably, the guide mechanism comprises: a connecting plate connected to the electrical equipment and a plurality of straight guide rails fixed on the connecting plate.

[0015] Preferably, the horizontal limiting structure comprises: a horizontal limiting plate connected to a side of the connecting plate provided with a straight guide rail, and the horizontal limiting plate is arranged at both ends of the plurality of straight guide rails.

[0016] Preferably, the connecting plate is a square steel plate.

[0017] Preferably, the geometric dimensions of the square steel plate are determined according to the structural form of the connected electrical equipment.

[0018] Preferably, the horizontal limit assembly and the vertical limit member are made of Q345B.

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

[0020] The present invention provides a limiting device for a seismic isolation device, which includes: a first horizontal limiter, a vertical limiter and a second horizontal limiter connected in sequence from bottom to top; the bottom of the first horizontal limiter is connected to the base of the transformer, and the top of the second horizontal limiter is connected to the electrical equipment; the first horizontal limiter and the second horizontal limiter both include a horizontal slide rail structure and a horizontal limiting structure, and the sliding directions of the horizontal slide rail structures of the first horizontal limiter and the second horizontal limiter intersect on the horizontal projection plane; the vertical limiter includes a vertical slide rail structure and a vertical limiting structure. The first horizontal limit member and the second horizontal limit member are both provided with a horizontal slide rail structure, and the vertical limit member is also provided with a vertical slide rail structure. The slide rail structure enables the limit device to move within a certain limit, thereby ensuring the normal use of the electrical equipment under normal use conditions of the seismic isolation device; the first horizontal limit member and the second horizontal limit member are both provided with a horizontal limit structure, and the vertical limit member is also provided with a vertical limit structure. When the displacement of the seismic isolation device exceeds the limit, the horizontal limit structure and the vertical limit structure limit the displacement stroke of the seismic isolation device to ensure the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the limit device of the seismic isolation device of the present invention;

[0022] Figure 2 It is a front view of the limiting shaft of the present invention;

[0023] Figure 3 A top view of the limiting shaft of the present invention;

[0024] Figure 4 It is a front view of the limiting cylinder of the present invention;

[0025] Figure 5 It is a top view of the limiting cylinder of the present invention;

[0026] Figure 6 It is a side view of the sliding mechanism of the second horizontal direction limiter of the present invention;

[0027] Figure 7 It is a structural diagram of the guide rail slot of the sliding mechanism of the second horizontal direction limiter of the present invention;

[0028] Figure 8 It is a side view of the sliding mechanism of the first horizontal direction limiting member of the present invention;

[0029] Fig. 9 It is a structural diagram of the guide rail slot of the sliding mechanism of the first horizontal direction limiter of the present invention;

[0030] Fig.10 It is a side view of the guide mechanism of the present invention;

[0031] Fig.11 A schematic diagram of the connection between the connecting plate and the straight guide rail of the guide mechanism of the present invention;

[0032] Among them, 101-limiting shaft, 102-limiting cylinder, 103-internal threaded hole, 2-sliding mechanism, 201-square plate, 202-guide rail slot, 3-guide mechanism, 301-connecting plate, 302-straight guide rail, 4-horizontal limiting plate. DETAILED DESCRIPTION

[0033] Embodiment 1:

[0034] The present invention provides a limit device for a seismic isolation device, such as Figure 1 As shown, the limiting device comprises: a first horizontal limiting member, a vertical limiting member and a second horizontal limiting member connected in sequence from bottom to top;

[0035] The bottom of the first horizontal limiter is connected to the foundation of the transformer, and the top of the second horizontal limiter is connected to the electrical equipment;

[0036] The first horizontal direction limiting member and the second horizontal direction limiting member both include a horizontal slide rail structure and a horizontal limiting structure, and the sliding directions of the horizontal slide rail structures of the first horizontal direction limiting member and the second horizontal direction limiting member intersect on a horizontal projection plane;

[0037] The vertical limiting member includes a vertical slide rail structure and a vertical limiting structure.

[0038] The top of the second horizontal limiter is connected to the electrical equipment by bolts, the second horizontal limiter is connected to the top of the vertical limiter through a horizontal slide rail structure, the bottom of the vertical limiter is connected to the horizontal slide rail of the first horizontal limiter, and the first horizontal limiter is connected to the foundation of the transformer by bolts, and the foundation of the transformer is generally concrete.

[0039] The horizontal slide rail structure provides horizontal displacement for the limiting device, and the sliding directions of the horizontal slide rail structures of the first horizontal limiting member and the second horizontal limiting member intersect on the horizontal projection plane, thereby increasing the direction of displacement on the horizontal plane and enhancing adaptability.

[0040] The horizontal slide rail structure enables the limit device to move within a certain limit, ensuring the normal use of the electrical equipment under the normal use conditions of the seismic isolation device; the first horizontal limit member and the second horizontal limit member are both provided with a horizontal limit structure, and the vertical limit member is also provided with a vertical limit structure. When the displacement of the seismic isolation device exceeds the limit, the horizontal limit structure and the vertical limit structure limit the displacement stroke of the seismic isolation device to ensure the stability of the equipment.

[0041] Preferably, the vertical slide rail structure includes: a limit shaft 101 and a limit cylinder 102 sleeved on the outside of the limit shaft 101, the top end of the limit shaft 101 is connected to the second horizontal direction limit piece, and the bottom end of the limit cylinder 102 is connected to the first horizontal direction limit piece; the limit shaft 101 moves vertically in the limit cylinder 102.

[0042] The limiting shaft 101 is a columnar structure, and the limiting cylinder 102 is a barrel structure. The columnar structure is sleeved in the hollow space in the middle of the barrel structure and can be located therein. Limiting structures are provided on the bottom end of the columnar structure and the inner wall of the barrel structure. A gap is provided between the two limiting structures to provide a vertical displacement stroke, so that the limiting shaft 101 can be vertically displaced in the limiting cylinder 102.

[0043] Preferably, the vertical limiting structure is arranged in the vertical slide rail structure, and the vertical limiting structure includes: a step surface protruding inwardly arranged on the top of the inner wall of the limiting cylinder 102, and a step surface protruding outwardly arranged on the bottom of the limiting shaft 101.

[0044] like Figure 2 The top of the limiting shaft 101 is provided with an internal threaded hole 103, and the limiting shaft 101 is bolted to the second horizontal direction limiting member. The limiting shaft is a columnar structure as a whole, and a stepped surface protruding outward is provided near the bottom of the limiting shaft 101. The top view of the limiting shaft 101 with the internal threaded hole 103 is as shown in FIG. Figure 3 shown.

[0045] like Figure 4 As shown, the limiting cylinder 102 is connected to the first horizontal direction limiting member through the threaded hole bolt, the limiting cylinder 102 is a cylindrical structure, the inner wall of the barrel structure is provided with a step surface protruding inward near the top, the bottom of the limiting cylinder 102 is provided with a circle of connecting plates for connection, and the connecting plate is provided with threaded holes. The top view of the limiting cylinder 102 is as shown in Figure 5 shown.

[0046] The limiting structure of the limiting cylinder 102 cooperates with the limiting structure of the limiting shaft 101 , and the two limiting structures are used to limit the vertical displacement range.

[0047] Preferably, the horizontal slide rail structure comprises: a sliding mechanism 2 and a guide mechanism 3 which are slidably connected;

[0048] The sliding mechanism 2 is connected to the vertical limiter, and the guiding mechanism 3 is connected to the electrical device.

[0049] The sliding mechanism 2 and the guiding mechanism 3 cooperate with each other to provide horizontal displacement for the limiting device. The sliding mechanism 2 and the guiding mechanism 3 of the first horizontal direction limiting member and the second horizontal direction limiting member have the same structure and opposite directions, and the sliding directions intersect on the horizontal projection plane.

[0050] The sliding mechanism 2 includes: a square plate 201 connected to the vertical direction limiter and a plurality of guide rail slots 202 connected to the square plate 201 .

[0051] like Figure 6 The sliding mechanism 2 of the second horizontal direction limiter is shown. Figure 7 As shown, a connecting hole for installing a bolt is provided at the center of the square plate 201, and the connecting hole corresponds to the internal threaded hole 103 at the top of the limiting shaft 101. The guide rail slot 202 is provided on the top surface of the square plate and is connected to the guide mechanism 3 of the second horizontal direction limiting member. The guide rail slot 202 is provided with a plurality of groups, which respectively correspond to the guide mechanism 3 of the second horizontal direction limiting member.

[0052] like Figure 8 The sliding mechanism 2 of the first horizontal limiter is shown. Fig. 9 The four corners of the square plate 201 are provided with connection holes for installing bolts, and the connection holes correspond to the connection holes at the bottom of the limiting cylinder 102. The guide rail slot 202 is provided on the bottom surface of the square plate and is connected to the guide mechanism 3 of the first horizontal direction limiting member. The guide rail slot 202 is provided with multiple groups, which respectively correspond to the guide mechanism 3 of the first horizontal direction limiting member.

[0053] like Fig.10 As shown, the guide mechanism 3 includes: a connecting plate 301 connected to the electrical device and a plurality of straight guide rails 302 fixed on the connecting plate 301 .

[0054] The straight guide rail 302 is arranged on one side of the connecting plate 301. During installation, the straight guide rail 302 corresponds to the guide rail slot 202. The straight guide rail 3.2 and the guide rail slot 202 provide horizontal displacement. A connecting hole is provided on the connecting plate 301, and is connected to the electrical equipment through the connecting hole.

[0055] like Fig.11As shown, the horizontal limiting structure includes: a horizontal limiting plate 4 connected to a side of the connecting plate 301 provided with a straight guide rail 302 , and the horizontal limiting plate 4 is arranged at both ends of the plurality of straight guide rails 302 .

[0056] The horizontal limit plate 4 is arranged at both ends of the straight guide rail 302 for limiting. When the seismic isolation device has a horizontal displacement range, the straight guide rail 3.2 and the guide rail slot 202 of the first horizontal direction limit member and the second horizontal direction limit member provide horizontal displacement. When the horizontal displacement exceeds the sliding range, the horizontal limit plate 4 is used to limit the displacement from continuing to increase.

[0057] Preferably, the connecting plate 301 is a square steel plate.

[0058] Preferably, the geometric dimensions of the square steel plate are determined according to the structural form of the connected electrical equipment.

[0059] Preferably, the horizontal limit assembly and the vertical limit member are made of Q345B.

[0060] The limit device provided by the present invention can be used in the seismic isolation design of electrical equipment such as transformers, converter transformers, and high-voltage shunt reactors. Within the horizontal displacement range designed for the seismic isolation device, horizontal displacement is provided by the straight guide rail 3.2 and the guide rail slot 202 of the first horizontal direction limiter and the second horizontal direction limiter. When a horizontal displacement exceeding the sliding range is generated, the displacement is limited to continue to increase by the horizontal limit plate 4; within the vertical displacement range designed for the seismic isolation device, a vertical displacement stroke is provided by the gap between the limit shaft 101 and the limit cylinder 102. In normal use, the normal operation of the electrical equipment is guaranteed. Under the action of an earthquake, when the displacement of the seismic isolation device does not exceed the limit, the limit device moves smoothly and provides a displacement stroke in the horizontal and vertical directions; when the displacement of the seismic isolation device exceeds the limit, the displacement stroke of the seismic isolation device is limited to keep the electrical equipment running stably; when a horizontal displacement exceeding the design is generated, the stroke of the vertical gap is exhausted, and the limit shaft 101 provides a vertical force to limit the displacement of the seismic isolation device after contacting the limit cylinder 102.

[0061] Embodiment 2:

[0062] The best embodiment adopts the method of arranging 4 limit devices under a single transformer. The total height of the limit devices is 220mm, the horizontal limit displacement is 100mm, and the vertical limit displacement is 15mm.

[0063] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A limit device for a seismic isolation device, characterized in that: The limiting device comprises: a first horizontal limiting member, a vertical limiting member and a second horizontal limiting member connected in sequence from bottom to top; The bottom of the first horizontal limiter is connected to a foundation, and the top of the second horizontal limiter is connected to an electrical device; The first horizontal direction limiting member and the second horizontal direction limiting member both include a horizontal slide rail structure and a horizontal limiting structure, and the sliding directions of the horizontal slide rail structures of the first horizontal direction limiting member and the second horizontal direction limiting member intersect on a horizontal projection plane; The vertical limiting member includes a vertical slide rail structure and a vertical limiting structure.

2. A limit device for a seismic isolation device as claimed in claim 1, characterized in that: The vertical slide rail structure comprises: a limiting shaft (101) and a limiting cylinder (102) sleeved on the outside of the limiting shaft (101); the top end of the limiting shaft (101) is connected to the second horizontal limiting member, and the bottom end of the limiting cylinder (102) is connected to the first horizontal limiting member; the limiting shaft (101) moves in the vertical direction inside the limiting cylinder (102).

3. A limit device for a seismic isolation device as claimed in claim 2, characterized in that: The vertical limiting structure is arranged in the vertical slide rail structure, and comprises: a step surface protruding inwardly arranged at the top of the inner wall of the limiting cylinder (102), and a step surface protruding outwardly arranged at the bottom of the limiting shaft (101).

4. The limiting device of the seismic isolation device according to claim 1, characterized in that: The horizontal slide rail structure comprises: a sliding mechanism (2) and a guide mechanism (3) which are slidably connected; The sliding mechanism (2) is connected to the vertical direction limiting member, and the guiding mechanism (3) is connected to the electrical equipment.

5. The limit device of the seismic isolation device according to claim 4, characterized in that: The sliding mechanism (2) comprises: a square plate (201) connected to the vertical direction limiting member and a plurality of guide rail slots (202) connected to the square plate (201).

6. The limit device of the seismic isolation device according to claim 4, characterized in that: The guide mechanism (3) comprises: a connection plate (301) connected to the electrical equipment and a plurality of straight guide rails (302) fixed on the connection plate (301).

7. A limit device for a seismic isolation device as claimed in claim 6, characterized in that: The horizontal limiting structure comprises: a horizontal limiting plate (4) connected to a side of the connecting plate (301) provided with a straight guide rail (302), the horizontal limiting plate (4) being arranged at both ends of a plurality of the straight guide rails (302).

8. The limit device of the seismic isolation device according to claim 6, characterized in that: The connecting plate (301) is a square steel plate.

9. A limit device for a seismic isolation device as claimed in claim 8, characterized in that: The geometrical dimensions of the square steel plate are determined according to the structural form of the connected electrical equipment.

10. The limit device of the seismic isolation device according to claim 1, characterized in that: The material of the horizontal limit assembly and the vertical limit member is Q345B.

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