Tank body structure for 362kV tank-type circuit breaker

Abstract

The utility model relates to the field of circuit breakers, in particular to a tank body structure for a 362kV tank type circuit breaker. The device comprises a main cylinder body and a flange assembly, butt-joint ports are formed in the two axial ends of the main cylinder, mounting hand holes are formed in the front side and the rear side of the main cylinder respectively, and two supporting and connecting assemblies are arranged at the bottom of the main cylinder and comprise two supporting plate parts distributed side by side; the flange assembly comprises a butt joint flange arranged at the butt joint opening and two inclined straight cylinder flanges integrally and obliquely communicated to the upper portion of the main cylinder. The utility model has the advantages of lighter weight and simple assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit breaker, in particular to a tank body structure for 362kV tank type circuit breaker. BACKGROUND

[0002] Tank type circuit breaker is an important kind of circuit breaker, and plays a role of controlling and protecting power grid. The mechanical strength and electric field strength design of the tank body structure play a vital role in the safe operation of the power grid.

[0003] 362kV voltage level is commonly used in North America, unlike the domestic tank type circuit breaker which mostly adopts welded tank body, the cast tank body is mostly adopted in North America. The design of the cast tank body is more strict than the welded tank body, and needs to ensure that the tank body structure can withstand 5 times the design pressure of the damage internal pressure, and ensure that the tank body itself has sufficient strength to break the necessary unit of the circuit breaker. In order to ensure that the tank body can withstand greater internal pressure, the general measures are to reduce the tank body hand hole and increase the tank body thickness. Therefore, the general cast tank type circuit breaker tank body is heavy and difficult to assemble. SUMMARY

[0004] The utility model aims at the problems in the background art, and provides a tank body structure for 362kV tank type circuit breaker, which is lighter and easier to assemble.

[0005] The technical scheme of the utility model relates to a tank body structure for 362kV tank type circuit breaker, which comprises a main cylinder and a flange assembly. The main cylinder has butt joints at both axial ends, one installation hand hole is arranged on each of the front and rear sides, two groups of support connecting assemblies are arranged at the bottom, and the support connecting assembly comprises two support plate parts arranged side by side. The flange assembly comprises a butt flange arranged at the butt joint and two inclined straight cylinder flanges integrally and obliquely connected to the upper part of the main cylinder.

[0006] Preferably, the two installation hand holes are distributed in a staggered manner.

[0007] Preferably, the angle between the axial direction of the inclined straight cylinder flange and the axial direction of the main cylinder is 10-15°.

[0008] Preferably, the two inclined straight cylinder flanges are inclined to one side of the adjacent butt joint from bottom to top.

[0009] Preferably, a plurality of connecting holes are arranged on both sides of the support plate part.

[0010] Preferably, a plurality of reinforcing ribs are uniformly arranged on the outer circumferential surface of both ends of the main cylinder around the central axis, and the reinforcing ribs abut against the butt flange.

[0011] Preferably, a thickened reinforcing part is arranged on the outer surface of the communication part of the inclined straight cylinder flange and the main cylinder, and the thickened reinforcing part comprises a rib part.

[0012] Compared with the prior art, the tank body structure has the beneficial technical effects that:

[0013] The tank body structure is lighter in weight, high in structural strength, convenient to connect with other functional components in the circuit breaker through the flanges, increases the side mounting hand holes, can be connected with the transition support frame, is simple in assembly, and simple in mounting process. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the embodiment of the utility model;

[0015] Figure 2 is Figure 1 a partial structural schematic view;

[0016] Figure 3 is a structural schematic view of the embodiment of the utility model installed on the transition support frame.

[0017] The drawings show that: 1, main cylinder; 2, butt joint flange; 3, inclined straight cylinder flange; 4, mounting hand hole; 5, support plate part; 6, reinforcing rib; 7, thickened reinforcing part; 8, transition support frame. DETAILED DESCRIPTION

[0018] As Figures 1-3 shown, the tank body structure for 362kV tank-type circuit breaker proposed in the embodiment comprises a main cylinder 1 and a flange assembly.

[0019] The main cylinder 1 is provided with butt joints at both axial ends, and each of the front and rear sides is provided with one mounting hand hole 4, and the two mounting hand holes 4 are distributed in a staggered manner. The mounting hand hole 4 is provided with a wire hole in the front, which is used for checking the installation of internal elements during installation, and the cover plate is used for sealing after installation. The main cylinder 1 is provided with two groups of support connection assemblies at the bottom. The support connection assembly comprises two support plate parts 5 distributed side by side, and a plurality of connecting holes are arranged on both sides of the support plate part 5, for example, two connecting holes can be arranged on each side of the support plate part 5. Each support plate part 5 is connected with one transition support frame 8, and the transition support frame 8 is provided with a through hole corresponding to the connecting hole. By passing the bolt through the through hole and the connecting hole and screwing the nut on the other side, the support plate part 5 can be installed on the transition support frame 8, so that the assembly of the tank body structure is more simple. The four transition support frames 8 are connected with the four corresponding support plate parts 5, which can effectively support the entire tank body structure. The transition support frame 8 is connected with the external base, and is installed on the base.

[0020] The flange assembly comprises a butt flange 2 arranged at the butt joint and two inclined straight flanges 3 integrally communicated with the upper part of the main cylinder 1. The butt flange 2 is provided with a circular through hole for butt joint with other functional components in the circuit breaker. The inclined straight flange 3 comprises a straight cylinder part communicated with the main cylinder 1 and a flange part connected to the outer end of the straight cylinder part, and the straight cylinder part is smoothly connected with the main cylinder 1. The flange part is provided with a circular through hole for butt joint with other functional components in the circuit breaker. The two inclined straight flanges 3 are adjacent to two installation hand holes 4 respectively. The two inclined straight flanges 3 are gradually inclined to one side of the adjacent butt joint from bottom to top, and the axial angle between the inclined straight flange 3 and the main cylinder 1 is 10-15°.

[0021] In order to improve the structural strength of the whole tank structure, the following design is made: a plurality of reinforcing ribs 6 are uniformly arranged on the outer circumferential surface of the axial both ends of the main cylinder 1 around the center axis, and the reinforcing ribs 6 abut against the butt flange 2. The outer surface of the communication part between the inclined straight flange 3 and the main cylinder 1 is provided with a thickened reinforcing part 7, and the thickened reinforcing part 7 comprises a rib part. The thickened reinforcing part 7 increases the thickness of the part, so that the tank can withstand 5 times the design pressure of the destructive internal pressure, and the strength of the tank is ensured.

[0022] The embodiment is lighter in weight, higher in structural strength, convenient for connection with other functional components in the circuit breaker through the flange, and provided with the side installation hand hole 4, which can be connected with the transition support frame 8, and is simple in assembly and simple in installation process.

[0023] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the persons skilled in the art without departing from the purpose of the utility model.

Claims

1. A tank structure for a 362kV tank-type circuit breaker, characterized in that, include: The main cylinder (1) has a connection interface at both ends of its axial direction, a mounting hand hole (4) on each of the front and rear sides, and two sets of support connection components at the bottom. The support connection components include two support plate parts (5) arranged side by side. The flange assembly includes a butt flange (2) disposed at the interface and two inclined straight flanges (3) integrally inclined and connected to the upper part of the main body (1).

2. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, The two mounting handholes (4) are misaligned.

3. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, The axial angle between the inclined straight cylinder flange (3) and the main cylinder (1) is 10-15°.

4. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, Both inclined straight cylinder flanges (3) gradually tilt from bottom to top toward the side of the adjacent interface.

5. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, Multiple connection holes are provided on both sides of the support plate (5).

6. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, Multiple reinforcing ribs (6) are evenly arranged around the central axis on the outer circumferential surface of both ends of the main cylinder (1), and the reinforcing ribs (6) abut against the connecting flange (2).

7. The tank structure for a 362kV tank-type circuit breaker according to claim 1, characterized in that, A thickened reinforcing part (7) is provided on the outer surface of the connection between the inclined straight flange (3) and the main cylinder (1), and the thickened reinforcing part (7) includes a rib part.

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