Heat tracing band mounting cover, heat tracing structure and heat tracing method for knob insulator type circuit breaker

Abstract

The invention belongs to the field of power transformation equipment, and particularly relates to a heat tracing belt installation cover, a heat tracing structure and a heat tracing method.The heat tracing belt installation cover comprises a heat conduction cover and a heat preservation cover, the heat conduction cover is of a left-right split type butt joint structure, and the heat conduction cover comprises a heat conduction cover body, a vertical upper edge, a vertical lower edge and a heat conduction block; the multiple heat conduction blocks are fixedly arranged along the inner circumference of the heat conduction cover body at intervals, the vertical upper edge and the vertical lower edge are connected to the upper portion and the lower portion of the heat conduction cover body respectively, and the heat preservation cover is of a split structure and is matched with the heat conduction cover in structure. The heat tracing structure comprises the heat tracing belt and the heat tracing belt mounting cover for the knob insulator type circuit breaker, and the heat tracing belt is mounted between the heat conduction cover and the heat preservation cover. According to the heat tracing tape mounting cover, the heat tracing structure and the heat tracing method for the knob insulator type circuit breaker, the heat tracing tape can be conveniently arranged on an old knob insulator type SF6 circuit breaker in severe cold weather, so that SF6 gas is prevented from being liquefied.

Description

Technical Field

[0001] The present invention belongs to the field of substation equipment, and particularly relates to a heating tape installation cover, a heating structure and a heating method for a porcelain column circuit breaker. Background Art

[0002] In a low-temperature environment, a porcelain column SF6 circuit breaker may cause equipment alarms and locks due to gas liquefaction. At this time, if gas is replenished, the total gas volume will increase, and in severe cases, explosion and discharge accidents may occur. Installing a heating tape can effectively solve this problem. However, a large number of old equipment do not have heating tapes installed, mainly because there is a lack of a heating tape installation structure that is convenient to install and has a suitable structure.

[0003] Therefore, how to design a suitable heating structure for a porcelain column circuit breaker to facilitate the mobile configuration of a heating tape for old porcelain column SF6 circuit breakers in severe cold weather and effectively prevent equipment locks and even explosions caused by gas liquefaction has become an urgent problem to be solved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a heating tape installation cover, a heating structure and a heating method for a porcelain column circuit breaker to solve the problems existing in the prior art.

[0005] On the one hand, the present invention provides a heating tape installation cover for a porcelain column circuit breaker, which is used to fix the heating tape and is adapted to be installed on the outside of the bottom flange of the porcelain column circuit breaker. The bottom flange includes a cylindrical side surface, a bottom horizontal outer extension edge, and reinforcing rib plates that are circumferentially spaced along the cylindrical side surface and are connected between the cylindrical side surface and the bottom horizontal outer extension edge. Among them, the heating tape installation cover for the porcelain column circuit breaker includes: a heat-conducting cover and a heat-insulating cover. The heat-conducting cover is a left-right split docking structure. The heat-conducting cover includes a heat-conducting cover body, a vertical upper edge, a vertical lower edge, and heat-conducting blocks. The heat-conducting blocks are multiple and are fixedly arranged at intervals along the inner circumference of the heat-conducting cover body. The inner circumferential surface of the heat-conducting block is used to fit with the cylindrical side surface of the bottom flange. A gap for accommodating the reinforcing rib plates of the bottom flange is formed between adjacent heat-conducting blocks. The vertical upper edge is connected above the heat-conducting cover body and is used to fit with the outer circumferential surface of the root of the porcelain bushing connected above the bottom flange. The vertical lower edge is connected below the heat-conducting cover body, and the inner circumference of the vertical lower edge is used to fit with the outer circumferential surface of the bottom horizontal outer extension edge of the bottom flange. The heat-insulating cover is a split structure and is adapted to the structure of the heat-conducting cover. A heating tape is installed between the heat-insulating cover and the heat-conducting cover.

[0006] Preferably, the split docking parts of the heat-conducting cover and the heat-insulating cover are both connected by bolts. The connection positions of the heat-conducting cover and the heat-insulating cover are different, and the heat-insulating cover is provided with an avoidance part that cooperates with the split connection position of the heat-conducting cover.

[0007] Further preferably, the outer periphery of the heat conduction cover body of the heat conduction cover is frustum-shaped.

[0008] The present invention also provides a heat tracing structure for a porcelain post circuit breaker, including: a heat tracing tape and the above-mentioned heat tracing tape installation cover for the porcelain post circuit breaker. The heat tracing tape is installed on the outer peripheral surface of the heat conduction cover, and the heat preservation cover is installed outside the heat conduction cover to make the heat tracing tape fit with the heat conduction cover.

[0009] Preferably, the outer side of the heat tracing tape is covered with heat preservation and fireproof materials.

[0010] The present invention also provides a heat tracing method for a porcelain post circuit breaker, in which the above-mentioned heat tracing structure for the porcelain post circuit breaker is cooperatively installed on the outer side of the bottom flange of the porcelain post circuit breaker.

[0011] The heat tracing tape installation cover for the porcelain post circuit breaker provided by the present invention can fix the heat tracing tape and be cooperatively installed on the outer side of the bottom flange of the porcelain post circuit breaker, which can facilitate the mobility configuration of the heat tracing tape for old porcelain post SF6 circuit breakers in severe cold weather, and effectively prevent the negative impacts such as equipment locking and even explosion caused by gas liquefaction. Description of the Drawings

[0012] The following further describes the present invention in detail in conjunction with the drawings and embodiments:

[0013] Figure 1 is a schematic structural diagram of the heat tracing tape installation cover for the porcelain post circuit breaker provided by the present invention;

[0014] Figure 2 is an exploded view of the heat tracing tape installation cover for the porcelain post circuit breaker provided by the present invention;

[0015] Figure 3 is a schematic structural diagram of the heat conduction cover;

[0016] Figure 4 is a schematic connection diagram of the bottom flange of the porcelain post circuit breaker and the root of the porcelain bushing. Detailed Embodiments

[0017] The following will further explain the present invention in conjunction with specific implementation schemes, but the present invention is not limited thereto.

[0018] The porcelain post circuit breaker includes a porcelain bushing and a bottom flange 110 connected to the root 120 of the porcelain bushing (such as Figure 4As shown in the figure, the bottom flange 110 includes a cylindrical side surface 101, a bottom horizontal outward extending edge 102, and reinforcing rib plates 103 that are circumferentially spaced along the cylindrical side surface 101 and are connected between the cylindrical side surface 101 and the bottom horizontal outward extending edge 102. SF6 is contained in the porcelain bushing. At low temperatures, SF6 will liquefy and accumulate at the lower part of the porcelain bushing, which will cause the equipment to lock up or even explode. Therefore, how to solve the above problems has become a research hotspot.

[0019] In view of this, in order to facilitate the flexible configuration of heating tapes for old porcelain column type SF6 circuit breakers in severe cold weather to effectively prevent equipment locking or even explosion caused by gas liquefaction, as Figures 1 to 4 shown, the present invention provides a heating tape installation cover for a porcelain column type circuit breaker, which is used to fix the heating tape and is adapted to be installed on the outside of the bottom flange 110 of the porcelain column type circuit breaker. Among them, the heating tape installation cover for the porcelain column type circuit breaker includes: a heat conducting cover 1 and a heat insulating cover 2. The heat conducting cover 1 is a left-right split docking structure. The heat conducting cover 1 includes a heat conducting cover main body 11, a vertical upper edge 12, a vertical lower edge 13, and heat conducting blocks 14. The heat conducting blocks 14 are multiple and are fixedly arranged at intervals along the inner circumference of the heat conducting cover main body 11. The inner circumferential surface of the heat conducting block 14 is used to fit with the cylindrical side surface 101 of the bottom flange 110. A gap for accommodating the reinforcing rib plate 103 of the bottom flange 110 is formed between adjacent heat conducting blocks 14. The vertical upper edge 12 is connected above the heat conducting cover main body 11, and the vertical upper edge 12 is used to fit with the outer circumferential surface of the root 120 of the porcelain bushing connected above the bottom flange 110. The vertical lower edge 13 is connected below the heat conducting cover main body 11, and the inner circumference of the vertical lower edge 13 is used to fit with the outer circumferential surface of the bottom horizontal outward extending edge 102 of the bottom flange 110. The heat insulating cover 2 is a split structure and is adapted to the structure of the heat conducting cover 1. A heating tape is installed between the heat insulating cover 2 and the heat conducting cover 1.

[0020] The heating tape installation cover for the porcelain column type circuit breaker includes a heat conducting cover and a heat insulating cover. The heat conducting cover can be cooperatively installed with the bottom flange of the porcelain column type circuit breaker through the cooperation of the heat conducting cover main body, the vertical upper edge, and the vertical lower edge with the bottom flange of the porcelain column type circuit breaker. The heat conducting blocks on the inner side of the heat conducting cover can conduct the heat generated by the heating tape installed on the outer side of the heat conducting cover to the bottom flange, preventing the liquefaction of SF6 in the porcelain column type circuit breaker. The heat insulating cover is cooperatively fixed outside the heat conducting cover, enabling the heating tape to fit on the heat conducting cover and providing a heat preservation effect. The heating tape installation cover for the porcelain column type circuit breaker can realize the flexible configuration of heating tapes for old porcelain column type SF6 circuit breakers in severe cold weather and effectively prevent the negative impacts of equipment locking or even explosion caused by gas liquefaction.

[0021] As an improvement of the technical solution, the split docking parts of the heat conducting cover 1 and the heat insulating cover 2 are both connected by bolts, asFigure 2 As shown, the connection positions of the heat-conducting cover 1 and the heat-insulating cover 2 are different, and an avoidance portion 21 is provided on the heat-insulating cover 2 to cooperate with the split connection position of the heat-conducting cover 1.

[0022] As an improvement of the technical solution, as Figures 1 to 3 shown, the outer periphery of the heat-conducting cover body 11 of the heat-conducting cover 1 is frustum-shaped.

[0023] The present invention also provides a heat tracing structure for a porcelain post circuit breaker, including: a heat tracing tape and the above-mentioned heat tracing tape installation cover for the porcelain post circuit breaker. The heat tracing tape is installed on the outer peripheral surface of the heat-conducting cover 1, and the heat-insulating cover 2 is installed outside the heat-conducting cover 1 to make the heat tracing tape fit the heat-conducting cover 1. Among them, the type of the heat tracing tape can be selected according to needs as long as it can be installed between the heat-insulating cover and the heat-conducting cover.

[0024] As an improvement of the technical solution, the outer side of the heat tracing tape is covered with heat-insulating and fireproof materials.

[0025] The present invention also provides a heat tracing method for a porcelain post circuit breaker, and the above-mentioned heat tracing structure for the porcelain post circuit breaker is cooperatively installed on the outer side of the bottom flange 110 of the porcelain post circuit breaker.

[0026] Among them, the installation method of the heat tracing structure for the porcelain post circuit breaker is as follows: First, the heat-conducting cover is cooperatively installed outside the bottom flange and fixed. After that, the heat tracing tape is installed on the outer peripheral surface of the heat-conducting cover. After the installation is completed, heat-insulating and fireproof materials are covered on it. Finally, the heat-insulating cover is installed on the outer side of the heat-conducting cover and fastened. At this time, the heat-insulating cover makes the heat tracing tape fit the heat-conducting cover. Thus, the installation of the heat tracing structure is completed and heat tracing is realized.

[0027] The specific embodiments of the present invention are written in a progressive manner, emphasizing the differences between each embodiment, and the similar parts can be referred to each other.

[0028] The above has described in detail the embodiments of the present invention in conjunction with the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A heating tape installation cover for a column type circuit breaker, used for fixing the heating tape and being installed on the outer side of a bottom flange (110) of the column type circuit breaker, wherein the bottom flange (110) comprises a cylindrical side surface (101), a bottom horizontally extending edge (102), and a reinforcing rib plate (103) arranged at intervals along the circumference of the cylindrical side surface (101) and connected between the cylindrical side surface (101) and the bottom horizontally extending edge (102), characterized in that: The heating tape installation cover for a porcelain column circuit breaker comprises: a heat conductive cover (1) and a heat insulation cover (2); the heat conductive cover (1) is a left-right split docking structure; the heat conductive cover (1) comprises a heat conductive cover body (11), a vertical upper edge (12), a vertical lower edge (13) and a heat conductive block (14); the heat conductive blocks (14) are multiple and are fixedly arranged at intervals along the inner circumference of the heat conductive cover body (11); the inner circumferential surface of the heat conductive block (14) is used to fit with the cylindrical side surface (101) of the bottom flange (110); and a reinforcing rib plate (103) capable of accommodating the bottom flange (110) is formed between adjacent heat conductive blocks (14). The vertical upper edge (12) is connected to the upper part of the heat-conducting cover body (11); the vertical upper edge (12) is used to fit with the outer peripheral surface of the root of the porcelain sleeve connected to the upper part of the bottom flange (110); the vertical lower edge (13) is connected to the lower part of the heat-conducting cover body (11); the inner periphery of the vertical lower edge (13) is used to fit with the outer peripheral surface of the bottom horizontal outward edge (102) of the bottom flange (110); the heat-insulating cover (2) is a split structure and is compatible with the structure of the heat-conducting cover (1); the space between the heat-insulating cover (2) and the heat-conducting cover (1) is used to install a heating belt.

2. The heating cable installation cover for a porcelain column type circuit breaker according to claim 1, characterized in that: The split butting parts of the heat-conducting cover (1) and the heat-insulating cover (2) are both connected by bolts, the connection positions of the heat-conducting cover (1) and the heat-insulating cover (2) are different, and the heat-insulating cover (2) is provided with an avoidance part (21) that cooperates with the split connection position of the heat-conducting cover (1).

3. The heating cable installation cover for a porcelain column type circuit breaker according to claim 1, characterized in that: The outer circumference of the heat-conducting cover body (11) of the heat-conducting cover (1) is in a truncated cone shape.

4. A heating structure for a porcelain column type circuit breaker, characterized in that: include: A heating belt and a heating belt installation cover for a porcelain column circuit breaker according to any one of claims 1 to 3, wherein the heating belt is installed on the outer peripheral surface of the heat-conductive cover (1), and the heat-insulating cover (2) is installed on the outside of the heat-conductive cover (1) so that the heating belt is in contact with the heat-conductive cover (1).

5. The heating structure for a porcelain column type circuit breaker according to claim 4, characterized in that: The outer side of the heating belt is covered with heat-insulating and fire-proof materials.

6. A heating method for a column type circuit breaker, characterized in that: The ceramic column type circuit breaker according to claim 4 or 5 is installed on the outer side of the bottom flange (110) of the ceramic column type circuit breaker with the heating structure.

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