Control optical fiber protection structure for outdoor high-potential direct current source system

Abstract

The utility model relates to the technical field of extra-high direct current power transmission design, and discloses a control optical fiber protection structure for an outdoor high-potential direct current source system, which is characterized in that a control optical fiber penetrates through a plurality of hollow insulating rods which are connected through connecting pieces; a single-stage or multi-stage series structure can be realized to meet the use of equipment with different voltage grades, and the outer surfaces of the plurality of hollow insulating rods are provided with insulating umbrella skirts, so that the creepage distance is increased, the hollow insulating rods are free from water accumulation, the insulating performance is improved, and the protection of the control optical fiber in the hollow insulating rods is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-high direct current power transmission design, in particular to a control optical fiber protection structure for an outdoor high-potential direct current source system. Background Art

[0002] With the construction and development of UHV DC transmission projects, how to ensure the continuous and reliable operation of the power grid has attracted more and more attention. When selecting UHV DC transmission equipment, power companies require equipment manufacturers to provide equipment with certain grid-connected operation experience. Therefore, many equipment manufacturers will choose a grid-connected operation simulation test to test the long-term reliability of the equipment.

[0003] Patent CN217820527U discloses an AC / DC current source device operating at a high potential, including a power circuit, a generator circuit and a rectifier circuit. The power circuit and the rectifier circuit are respectively connected to the generator circuit. The power circuit is driven by a pneumatic motor or an insulating track. However, this patent does not take into account the impact of heavy rain and the plum rain season. Although the optical fiber is inserted into a hollow insulating tube, its insulation performance is reduced due to the formation of water lines on its surface during the plum rain season or when experiencing heavy rain, which is easy to cause creepage flashover. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model aims to provide a control optical fiber protection structure for an outdoor high-potential DC current source system to solve the technical problem of how to protect the control optical fiber outdoors.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a control optical fiber protection structure for an outdoor high-potential DC current source system, comprising a plurality of hollow insulating rods;

[0007] A plurality of hollow insulating rods are coaxially arranged and connected in sequence, wherein a connector is provided at the connection point, and control optical fibers are passed through the plurality of hollow insulating rods, wherein the control optical fibers are passed through the connector from one hollow insulating rod to the next hollow insulating rod; and insulating umbrella skirts are provided on the outer surfaces of the plurality of hollow insulating rods.

[0008] Preferably, the insulating shed comprises an insulating coating layer and a plurality of insulating shed bodies; the insulating coating layer is coated on the outer wall of the hollow insulating rod, and the plurality of insulating shed bodies are arranged on the insulating coating layer along the rod body direction of the hollow insulating rod.

[0009] Furthermore, the heights of the plurality of insulating umbrella bodies are all equal.

[0010] Furthermore, gaps are provided between the plurality of insulating umbrella bodies.

[0011] Furthermore, the surfaces of several insulating umbrella bodies are smooth and are arranged obliquely.

[0012] Preferably, both ends of the connecting piece are respectively connected to one end of an adjacent hollow insulating rod by screws.

[0013] Preferably, reserved holes are symmetrically arranged at both ends of the hollow insulating rod. The reserved holes communicate with the connecting piece. The control optical fiber extends into the hollow insulating rod through the reserved hole at one end of the hollow insulating rod, and then extends into the next hollow insulating rod through the reserved hole at the other end of the hollow insulating rod via the connecting piece.

[0014] Furthermore, a communication hole is arranged in the connecting piece, and the communication hole is coaxially arranged with the reserved hole of the adjacent hollow insulating rod.

[0015] Preferably, a first groove is arranged at one end of the connecting piece close to the hollow insulating rod, and a second groove is arranged at the corresponding position of the end of the hollow insulating rod for the first groove; the first groove and the second groove are arranged in butt joint, and a sealing ring is sleeved at the butt joint.

[0016] Preferably, an insulating paste is filled in the hollow insulating rod, and the insulating paste wraps the control optical fiber.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model provides a control optical fiber protection structure for an outdoor high-potential DC current source system. The control optical fiber is arranged in several hollow insulating rods. Several hollow insulating rods are connected by connecting pieces, and a single-stage or multi-stage series structure can be realized to meet the use of equipment with different voltage levels. Insulating umbrella skirts are arranged on the outer surfaces of several hollow insulating rods, increasing the creepage distance, preventing the hollow insulating rods from accumulating water, improving the insulation performance, and enhancing the protection of the control optical fiber in the hollow insulating rod.

[0019] Furthermore, the insulating umbrella skirt includes an insulating coating layer and several insulating umbrella bodies; the insulating coating layer wraps the outer wall of the hollow insulating rod, and several insulating umbrella bodies are arranged on the insulating coating layer along the rod body direction of the hollow insulating rod. The insulating coating layer wrapping the outer wall of the hollow insulating rod improves the insulation performance of the hollow insulating rod. Several insulating umbrella bodies are arranged on the insulating coating layer, increasing the creepage distance and preventing water accumulation.

[0020] Furthermore, the heights of several insulating umbrella bodies are equal. The several insulating umbrella bodies are arranged with gaps. The surfaces of the several insulating umbrella bodies are smooth and are arranged obliquely, preventing water accumulation. When there is wind, tremors will occur to quickly shake off raindrops, improving the insulation performance.

[0021] Furthermore, both ends of the connecting piece are respectively connected to one end of an adjacent hollow insulating rod by screws, which improves the mechanical strength of the device. It has the advantages of high strength and light weight, facilitating on-site installation and subsequent maintenance.

[0022] Furthermore, reserved holes are symmetrically arranged at both ends of the hollow insulating rod. The reserved holes are communicated with the connecting piece. The control optical fiber is inserted into the hollow insulating rod through the reserved hole at one end of the hollow insulating rod, and then extends into the next hollow insulating rod through the reserved hole at the other end of the hollow insulating rod via the connecting piece, which facilitates the control optical fiber to enter the hollow insulating rod through the reserved hole.

[0023] Furthermore, a communication hole is arranged in the connecting piece, and the communication hole is coaxially arranged with the reserved hole of the adjacent hollow insulating rod, which facilitates the control optical fiber to penetrate from one hollow insulating rod into the next hollow insulating rod through the communication hole of the connecting piece.

[0024] Furthermore, a first groove is arranged at one end of the connecting piece close to the hollow insulating rod, and a second groove is arranged at the corresponding position of the end of the hollow insulating rod to the first groove; the first groove and the second groove are arranged in butt joint, and a sealing ring is sleeved at the butt joint, which ensures the sealing between the adjacent hollow insulating rod and the connecting piece, and prevents rainwater from flowing into the hollow insulating rod through the connection between the connecting piece and the hollow insulating rod, affecting the insulation performance.

[0025] Furthermore, an insulating paste is filled in the hollow insulating rod, and the insulating paste wraps the control optical fiber, which adds a secondary protection to the control optical fiber in the hollow insulating rod and prevents it from affecting the operation of the control optical fiber. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the protection structure in the present utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the hollow insulating rod in the present utility model;

[0028] Figure 3 It is a schematic diagram of the structure of the connecting piece in the present utility model;

[0029] Figure 4 It is a schematic diagram of the connection end structure of the hollow insulating rod in the present utility model;

[0030] In the figure: 1 - hollow insulating rod; 2 - insulating umbrella skirt; 3 - insulating paste; 4 - connecting piece; 5 - first groove; 6 - second groove; 7 - reserved hole; 8 - control optical fiber; 9 - communication hole; 21 - insulating coating layer; 22 - insulating umbrella body. Detailed Embodiments

[0031] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, system, product, or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, products, or devices.

[0033] The present utility model will be further described in detail below in conjunction with the accompanying drawings:

[0034] The purpose of the present utility model is to provide a control optical fiber protection structure for an outdoor high-potential DC current source system to solve the technical problem of how to protect the control optical fiber outdoors.

[0035] Embodiment 1

[0036] See Figure 1 , in an embodiment of the present utility model, a control optical fiber protection structure for an outdoor high-potential DC current source system is provided, including a plurality of hollow insulating rods 1;

[0037] The plurality of hollow insulating rods 1 are coaxially arranged and sequentially connected, and a connecting member 4 is provided at the connection. The control optical fiber 8 penetrates through the plurality of hollow insulating rods 1, and the control optical fiber 8 penetrates through the connecting member 4 in one hollow insulating rod 1 and extends into the next hollow insulating rod 1. Insulating umbrella skirts 2 are provided on the outer surfaces of the plurality of hollow insulating rods 1.

[0038] Specifically, as shown in Figure 2 , the insulating umbrella skirt 2 includes an insulating coating layer 21 and a plurality of insulating umbrella bodies 22; the insulating coating layer 21 covers the outer wall of the hollow insulating rod 1, and the plurality of insulating umbrella bodies 22 are arranged on the insulating coating layer 21 along the rod direction of the hollow insulating rod 1.

[0039] Among them, the heights of several insulating umbrella bodies 22 are equal, gaps are provided between the several insulating umbrella bodies 22, the surfaces of the several insulating umbrella bodies 22 are smooth and are inclined.

[0040] In this embodiment, the insulating coating layer 21 is coated on the outer wall of the hollow insulating rod 1, which increases the insulation performance of the hollow insulating rod 1. Several insulating umbrella bodies 22 are provided on the insulating coating layer 21, which increases the creepage distance and avoids water accumulation. The pollution grade of the insulating umbrella skirt 2 is designed as grade IV, which is much higher than the pollution level of the use place, and improves the safety operation coefficient.

[0041] Embodiment 2

[0042] See Figure 1 , in an embodiment of the present utility model, a control optical fiber protection structure for an outdoor high-potential DC current source system is provided, including several hollow insulating rods 1;

[0043] The several hollow insulating rods 1 are coaxially arranged and communicated in sequence. A connecting piece 4 is provided at the communicating place. The control optical fiber 8 runs through the several hollow insulating rods 1. Among them, the control optical fiber 8 runs through to the next hollow insulating rod 1 through the connecting piece 4 in one hollow insulating rod 1; insulating umbrella skirts 2 are provided on the outer surfaces of the several hollow insulating rods 1.

[0044] Specifically, both ends of the connecting piece 4 are respectively connected to one end of the adjacent hollow insulating rod 1 by screws.

[0045] Specifically, reserved holes 7 are symmetrically provided at both ends of the hollow insulating rod 1. The reserved holes 7 are communicated with the connecting piece 4. The control optical fiber 8 extends into the hollow insulating rod 1 through the reserved hole 7 at one end of the hollow insulating rod 1, and then extends into the next hollow insulating rod 1 through the reserved hole 7 at the other end of the hollow insulating rod 1 via the connecting piece 4.

[0046] Specifically, according to Figure 3 shown, a communication hole 9 is provided in the connecting piece 4. The communication hole 9 is coaxially arranged with the reserved hole 7 of the adjacent hollow insulating rod 1.

[0047] In this embodiment, both ends of the connecting piece 4 are respectively connected to one end of the adjacent hollow insulating rod 1 by screws, which improves the mechanical strength of the equipment, has the advantages of high strength and light weight, and is convenient for on-site installation and later maintenance; the communication hole 9 is coaxially arranged with the reserved hole 7 of the adjacent hollow insulating rod 1, which is convenient for the control optical fiber to penetrate from one hollow insulating rod into the next hollow insulating rod through the communication hole of the connecting piece.

[0048] Embodiment 3

[0049] See Figure 1 , in an embodiment of the present utility model, a control optical fiber protection structure for an outdoor high-potential DC current source system is provided, including several hollow insulating rods 1;

[0050] A number of hollow insulating rods 1 are coaxially arranged and connected in sequence. A connecting piece 4 is provided at the connection. A control optical fiber 8 runs through the inside of the number of hollow insulating rods 1. The control optical fiber 8 runs through the connecting piece 4 in one hollow insulating rod 1 and extends into the next hollow insulating rod 1; insulating umbrella skirts 2 are provided on the outer surfaces of the number of hollow insulating rods 1.

[0051] Specifically, according to Figure 3 and Figure 4 As shown, one end of the connecting piece 4 close to the hollow insulating rod 1 is provided with a first groove 5, and a second groove 6 is provided at the end of the hollow insulating rod 1 corresponding to the position of the first groove 5; the first groove 5 and the second groove 6 are arranged in butt joint, and a sealing ring is sleeved at the butt joint.

[0052] Specifically, according to Figure 1 As shown, the inside of the hollow insulating rod 1 is filled with an insulating paste 3, and the insulating paste 3 wraps the control optical fiber 8.

[0053] In this embodiment, a sealing ring is sleeved at the butt joint of the first groove 5 and the second groove 6, which ensures the sealing performance between the adjacent hollow insulating rods 1 and the connecting piece 4, and prevents rainwater from flowing into the hollow insulating rod 1 through the connection between the connecting piece 4 and the hollow insulating rod 1, affecting the insulation performance; the insulating paste 3 adds a secondary protection to the control optical fiber in the hollow insulating rod 1, avoiding affecting the operation of the control optical fiber.

[0054] In the present utility model, the material of the hollow insulating rod 1 is epoxy material, and the material of the insulating umbrella skirt 2 is organic composite material. The present utility model can adopt a single-stage design, and in the actual use process, it can also adopt a multi-stage series form according to different voltage levels of the equipment, with the characteristics of high safety factor, convenient installation and maintenance, etc.

[0055] In summary, the present utility model provides a control optical fiber protection structure for an outdoor high-potential DC current source system. The control optical fiber runs through a number of hollow insulating rods, and the number of hollow insulating rods are connected by connecting pieces, which can realize a single-stage or multi-stage series structure to meet the use of equipment with different voltage levels. Insulating umbrella skirts are provided on the outer surfaces of the number of hollow insulating rods, increasing the creepage distance, so that there is no water accumulation in the hollow insulating rods, improving the insulation performance, increasing the protection of the control optical fiber in the hollow insulating rods, and the control optical fiber increases the creepage distance through the hollow insulating rods with insulating umbrella skirts, improving the insulation performance.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements can still be made to the specific embodiments of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A control optical fiber protection structure for an outdoor high-potential DC current source system, characterized in that It includes several hollow insulating rods (1); The several hollow insulating rods (1) are coaxially arranged and connected in sequence. A connecting piece (4) is provided at the connection position. A control optical fiber (8) runs through the several hollow insulating rods (1). The control optical fiber (8) runs through the connecting piece (4) in one hollow insulating rod (1) and extends into the next hollow insulating rod (1). Insulating umbrella skirts (2) are provided on the outer surfaces of the several hollow insulating rods (1).

2. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 1, characterized in that, The insulating umbrella skirt (2) includes an insulating coating layer (21) and several insulating umbrella bodies (22); the insulating coating layer (21) covers the outer wall of the hollow insulating rod (1), and the several insulating umbrella bodies (22) are arranged on the insulating coating layer (21) along the rod body direction of the hollow insulating rod (1).

3. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 2, characterized in that, The heights of the several insulating umbrella bodies (22) are all equal.

4. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 2, wherein, The several insulating umbrella bodies (22) are arranged with gaps therebetween.

5. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 2, characterized in that, The surfaces of the several insulating umbrella bodies (22) are smooth and are obliquely arranged.

6. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 1, wherein Both ends of the connecting piece (4) are respectively connected to one end of the adjacent hollow insulating rod (1) by screws.

7. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 1, wherein Reserved holes (7) are symmetrically provided at both ends of the hollow insulating rod (1). The reserved holes (7) are communicated with the connecting piece (4). The control optical fiber (8) extends into the hollow insulating rod (1) through the reserved hole (7) at one end of the hollow insulating rod (1), and then extends into the next hollow insulating rod (1) through the reserved hole (7) at the other end of the hollow insulating rod (1) via the connecting piece (4).

8. A control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 7, characterized in that, A communication hole (9) is provided in the connecting piece (4). The communication hole (9) is coaxially arranged with the reserved hole (7) of the adjacent hollow insulating rod (1).

9. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 1, characterized in that, One end of the connecting piece (4) close to the hollow insulating rod (1) is provided with a first groove (5), and a second groove (6) is provided at the corresponding position of the end of the hollow insulating rod (1) to the first groove (5); the first groove (5) and the second groove (6) are arranged in butt joint, and a sealing ring is sleeved at the butt joint.

10. The control optical fiber protection structure for an outdoor high-potential DC current source system according to claim 1, characterized in that, An insulating paste (3) is filled in the hollow insulating rod (1), and the insulating paste (3) wraps the control optical fiber (8).

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