A lightning arrester sheath suitable for live working installation of power distribution networks

Abstract

The present disclosure relates to the technical field of lightning arrester protective sleeve, and one embodiment of the present disclosure provides a lightning arrester protective sleeve suitable for live working installation of power distribution network, which comprises a pair of protective sleeves, a pair of upper bolts and a pair of lower bolts, the upper bolts and the lower bolts are arranged on the protective sleeves, a sleeve tightening assembly is arranged between the protective sleeves, a wire assembly is arranged on one of the protective sleeves, the sleeve tightening assembly comprises a sealing layer, the sealing layer is arranged on the surface of the protective sleeve, the protective sleeves are attached through the sealing layer, the upper bolts and the lower bolts are screw-connected between the sealing layers, and a pair of clamping grooves are formed in the end faces of the sealing layers. Through the above technical scheme, the technical problem that the body type protective sleeve needs to be entirely sleeved from the top end of the lightning arrester during installation, and it is extremely difficult to install or even impossible to operate when the bottom of the lightning arrester is connected with complex lines or the space is narrow is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of surge arrester protective sleeves, specifically, to a surge arrester sleeve suitable for live-line installation in power distribution networks. Background Technology

[0002] In power distribution systems, surge arresters are critical equipment for ensuring line safety, and their normal operation is essential. Surge arrester sheaths are important components that protect surge arresters from external environmental influences and extend their service life. However, existing surge arrester sheaths have revealed numerous problems in practical applications, which urgently need to be addressed.

[0003] Traditional surge arrester sheaths have relatively simple structures, mostly one-piece or simple split designs. One-piece sheaths require being fitted entirely from the top of the surge arrester, making installation extremely difficult, or even impossible, when the bottom of the arrester is already connected to complex wiring or in confined space. While split sheaths can be disassembled for installation, the connections between the parts are mostly simple clips or bolts, which not only makes installation cumbersome but also leads to clips loosening and bolts corroding in long-term outdoor environments, resulting in decreased protective performance and increased risk of line faults.

[0004] In terms of loading and unloading, traditional sheaths lack convenient loading and unloading structures. When working on live lines, operators wearing insulated gloves already have limited flexibility. Faced with the complex sheath fixing structure, precise operation is difficult, the installation process is time-consuming, and the sheath is prone to falling off during subsequent operation due to insecure installation. Similarly, when the sheath needs to be disassembled for maintenance, its complex structure consumes a lot of manpower and resources, seriously affecting work efficiency and increasing the time of power outages and the risk of power interruption.

[0005] Furthermore, existing surge arrester sheaths almost entirely lack the capability to change the orientation of power lines. In actual power distribution network layouts, line routes often need to be flexibly adjusted due to factors such as space and planning, requiring surge arresters and their connected lines to change direction accordingly. However, traditional sheaths, once installed, impose a certain constraint on the lines. Forcibly changing the line orientation may damage the sheath or result in a loose fit with the surge arrester, rendering it ineffective and unable to meet the complex and ever-changing construction and maintenance needs of power distribution networks. As the scale of power distribution networks continues to expand and their intelligence levels gradually improve, developing a surge arrester sheath with an optimized structure, easy installation and removal, and the ability to flexibly change the orientation of power lines is of great significance for ensuring the safe and stable operation of power distribution networks and improving power supply reliability. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a surge arrester sheath suitable for live-line installation in power distribution networks. This solves the technical problem that in the prior art, when installing a one-piece sheath, it is necessary to fit it entirely from the top of the surge arrester. When encountering situations where the bottom of the surge arrester is already connected to complex lines or the space is narrow, the installation is extremely difficult or even impossible.

[0007] According to one aspect, at least one embodiment of this disclosure provides a surge arrester sheath suitable for live-line work installation in a power distribution network. The surge arrester sheath suitable for live-line work installation in a power distribution network includes:

[0008] A pair of protective sleeves, a pair of upper bolts, and a pair of lower bolts, wherein the upper bolts and the lower bolts are both disposed on the protective sleeves;

[0009] A fastening assembly is disposed between the protective sleeves;

[0010] A wire assembly, the wire assembly being disposed on one of the protective sleeves;

[0011] The tightening assembly includes a sealing layer, which is disposed on the surface of the protective sleeve. The protective sleeves are bonded together by the sealing layer. The upper bolt and the lower bolt are both screwed together between the sealing layers. A pair of slots are provided on both ends of the sealing layer.

[0012] As a further technical solution, the protective cover is fitted with a pair of leather sleeves, which are fixedly connected to the surface of the protective cover on one side. A pair of sleeve blocks are provided on the leather sleeves, and the sleeve blocks are embedded in the slots.

[0013] As a further technical solution, the wire assembly includes a sleeve, which is disposed inside the surface of one of the protective sleeves, and a fixing sleeve is screwed into the sleeve by means of threads.

[0014] As a further technical solution, a rotatable sleeve is connected to one end of the fixed sleeve, a protruding layer is provided on the fixed sleeve, and a stud is connected to the protruding layer by a threaded screw, with an anti-slip block provided at one end of the stud.

[0015] As a further technical solution, a sealing ring is provided on the surface of the fixing sleeve, and the sealing ring is attached to the end face of the sleeve opening.

[0016] As a further technical solution, the loop is in the shape of an L.

[0017] As a further technical solution, the sleeve has a U-shaped cross-section and is embedded in the slot while adhering to the side surface of the sealing layer.

[0018] As a further technical solution, a support layer is provided at the bottom of each protective sleeve, and the support layer is connected to the sealing layer.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the tightening assembly achieves the separate installation of the protective sleeve through the cooperation of the sealing layer and the bolt, which solves the problem of the traditional one-piece protective sleeve requiring the whole piece to be inserted. It adapts to the installation needs of complex lines and narrow spaces. The embedded design of the leather sleeve and the slot not only enhances the sealing between the protective sleeves and prevents rainwater and dust from entering, but also enables quick positioning and installation during live work, reducing operation steps. The U-shaped sleeve block tightens the sealing layer, improves the fit, and avoids the problems of easy loosening of the buckles and easy corrosion of the bolts in the traditional separate protective sleeve, ensuring the stability and protection of the protective sleeve for long-term use.

[0021] 2. In this disclosure, the bend of the conductor assembly can rotate flexibly to adjust the direction of the conductor, meeting the needs of the variable line routing in the distribution network, avoiding the constraints of traditional sheaths on the line. The threaded connection between the fixed sleeve and the sleeve opening and the sealing ring design ensure the sealing and firmness of the conductor connection. The anti-slip block is pressed against the conductor by the stud to prevent loosening. The L-shaped bend protects the conductor from excessive bending. This assembly provides flexibility in adjusting the line direction while protecting the conductor, solving the drawback of traditional sheaths that cannot change the line orientation. It adapts to the complex construction and operation and maintenance scenarios of the distribution network, improving the convenience of operation and the safety of the line. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 This is an isometric sectional view of the present disclosure;

[0026] Figure 4 This is another isometric sectional view of this disclosure;

[0027] In the diagram: 1. Protective sleeve; 2. Upper bolt; 3. Lower bolt; 4. Tightening assembly; 4-1. Sealing layer; 4-2. Slot; 4-3. Leather sleeve; 4-4. Sleeve block; 5. Wire assembly; 5-1. Sleeve opening; 5-2. Fixing sleeve; 5-3. Bend sleeve; 5-4. Raised layer; 5-5. Stud; 5-6. Anti-slip block; 6. Sealing ring; 7. Support layer. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, it illustrates a surge arrester sheath suitable for live-line work installation in a power distribution network according to an embodiment of this disclosure, comprising:

[0035] A pair of protective sleeves 1, a pair of upper bolts 2 and a pair of lower bolts 3, wherein the upper bolts 2 and the lower bolts 3 are both provided on the protective sleeves 1;

[0036] A fastening assembly 4 is disposed between the protective sleeves 1;

[0037] A wire assembly 5 is disposed on one of the protective sleeves 1;

[0038] The fastening assembly 4 includes a sealing layer 4-1, which is disposed on the surface of the protective sleeve 1. The protective sleeves 1 are fitted together through the sealing layer 4-1. The upper bolt 2 and the lower bolt 3 are both screwed together between the sealing layers 4-1. A pair of slots 4-2 are provided on both ends of the sealing layer 4-1. A pair of leather sleeves 4-3 are fitted on the outside of the protective sleeve 1. The leather sleeves 4-3 are fixedly connected to the surface of the protective sleeve 1 on one side. A pair of sleeve blocks 4-4 are provided on the leather sleeves 4-3. The sleeve blocks 4-4 are embedded in the slots 4-2.

[0039] In some examples, a tightening assembly 4 is designed to achieve tight fixing and sealing of the two protective sleeves 1. This assembly is based on the sealing layer 4-1 set on the surface of the protective sleeve 1. The two protective sleeves 1 are attached to each other through the sealing layer 4-1 and tightened by screwing the upper bolt 2 and the lower bolt 3 through the sealing layer 4-1 to form a rigid connection. The slots 4-2 on both ends of the sealing layer 4-1 are fitted with the sleeve blocks 4-4 on the outer skin 4-3 of the protective sleeve 1. When the skin 4-3 covers the seam of the protective sleeve 1, the sleeve blocks 4-4 are embedded in the slots 4-2, which can prevent the sealing layer 4-1 from being misaligned and at the same time enhance the sealing performance at the seam. The skin 4-3 is made of elastic material, which can fill the gap between the protective sleeves 1 and adapt to slight deformation during installation. Combined with the insulating and waterproof material of the sealing layer 4-1, it can effectively prevent rainwater and dust from entering the inside of the sleeve and ensure the insulation performance of the surge arrester in the live working environment.

[0040] Through the coordinated action of the sealing layer 4-1, bolts, leather sleeves 4-3 and sleeve blocks 4-4, the tightening assembly 4 achieves the functions of firmly fixing and sealing the two protective sleeves 1.

[0041] like Figures 1-4As shown in the figure, the wire assembly 5 in this embodiment includes a sleeve 5-1, which is disposed inside the surface of one of the protective sleeves 1. A fixing sleeve 5-2 is screwed into the sleeve 5-1. A bend sleeve 5-3 is rotatably fitted onto one end of the fixing sleeve 5-2. A protrusion 5-4 is provided on the fixing sleeve 5-2. A stud 5-5 is screwed into the protrusion 5-4. An anti-slip block 5-6 is provided at one end of the stud 5-5.

[0042] In some examples, to meet the requirements of conductor protection and orientation adjustment, a conductor assembly 5 is designed. This assembly uses the opening 5-1 on the surface of the protective sleeve 1 as the installation base. The fixed sleeve 5-2 is connected to the opening 5-1 by screw thread. The bend 5-3 of the fixed sleeve 5-2 can rotate around the axis by rotating one end, so as to flexibly adjust the direction of conductor access. The protrusion 5-4 on the fixed sleeve 5-2 is screwed to the stud 5-5. The anti-slip block 5-6 at one end of the stud 5-5 presses against the conductor. By tightening the stud 5-5, the pressure of the anti-slip block 5-6 on the conductor can be adjusted to ensure close contact between the conductor and the fixed sleeve 5-2 and prevent loosening. The rotation design of the bend 5-3 allows the conductor to turn within a certain angle range to adapt to the needs of different wiring scenarios in live work of the distribution network. At the same time, the protective sleeve 1 forms a protective enclosure for the conductor joint to avoid the corrosion of the conductor by the external environment and improve the safety of line operation.

[0043] Through the coordinated operation of sleeve 5-1, fixing sleeve 5-2, bend sleeve 5-3, stud 5-5 and anti-slip block 5-6, the conductor assembly 5 achieves the dual functions of conductor protection and orientation adjustment.

[0044] For example, such as Figure 1 As shown, a sealing ring 6 is provided on the surface of the fixing sleeve 5-2, and the sealing ring 6 is attached to the end face of the sleeve opening 5-1.

[0045] In some examples, the sealing ring 6 is provided to increase the sealing between the fixing sleeve 5-2 and the sleeve opening 5-1.

[0046] For example, such as Figure 1 As shown, the hinge 5-3 has an overall L-shaped structure.

[0047] In some examples, an L-shaped structure is used to protect the cable and prevent it from being bent excessively, which could lead to breakage over time.

[0048] For example, such as Figure 1 As shown, the sleeve 4-4 has a U-shaped cross-section and is embedded in the slot 4-2 while adhering to the side surface of the sealing layer 4-1.

[0049] In some examples, the U-shaped structure, while being fitted into the slot 4-2, also tightens the two sealing layers 4-1, improving the sealing fit between them.

[0050] For example, such as Figure 2 As shown, each of the protective sleeves 1 has a support layer 7 at its bottom, and the support layer 7 is connected to the sealing layer 4-1.

[0051] In some examples, by providing a support layer 7, the bottom can better fit the surface of the device, avoiding the disadvantage of excessive contact area, which can lead to bottom deformation and gaps.

[0052] In practical use: A pair of protective sleeves 1 are attached to both sides of the surge arrester, ensuring precise alignment of the sealing layer 4-1. Then, the upper bolt 2 and lower bolt 3 are screwed through the sealing layer 4-1 to form a rigid connection structure. The outer sheath 4-3 of the protective sleeve 1 is made of elastic insulating material, with U-shaped blocks 4-4 precisely embedded in the grooves 4-2 at both ends of the sealing layer 4-1. This not only fills the gaps between the protective sleeves 1 but also tightens the sealing layer 4-1 through the elastic tension of the U-shaped structure, enhancing the sealing performance at the joint and effectively preventing the intrusion of rainwater, dust, etc. The support layer 7 at the bottom of the protective sleeve 1 is made of flexible cushioning material, which can adapt to deformation when conforming to the curved surface of the surge arrester, ensuring a tight fit between the bottom and the equipment surface and preventing installation wobbling due to insufficient contact area.

[0053] On the surface of the protective sleeve 1 where the conductor needs to be installed, first connect the fixing sleeve 5-2 to the sleeve opening 5-1 by screwing it in. The sealing ring 6 on the surface of the fixing sleeve 5-2 fits tightly with the end face of the sleeve opening 5-1, forming a double sealing structure. Then, rotate the L-shaped bend sleeve 5-3 onto one end of the fixing sleeve 5-2. Rotate the bend sleeve 5-3 to a suitable angle according to the requirements of the line route, and then screw the stud 5-5 in the protrusion 5-4 so that the anti-slip block 5-6 presses against the conductor with appropriate pressure. This ensures the electrical connection stability between the conductor and the fixing sleeve 5-2, while avoiding damage to the conductor due to excessive compression. The entire installation process does not require inserting it from the top of the surge arrester. Operators can operate precisely with insulated tools while the circuit is energized. This is suitable for working environments in power distribution networks where the bottom of the surge arrester is already connected to complex lines or in narrow spaces, significantly improving the safety and convenience of live-line work.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A surge arrester sheath suitable for live-line installation in power distribution networks, characterized in that, include: A pair of protective sleeves (1), a pair of upper bolts (2) and a pair of lower bolts (3), wherein the upper bolts (2) and the lower bolts (3) are both provided on the protective sleeves (1); A clamping assembly (4) is disposed between the protective sleeves (1); A wire assembly (5) is disposed on one of the protective sleeves (1); The tightening assembly (4) includes a sealing layer (4-1), which is disposed on the surface of the protective sleeve (1). The protective sleeves (1) are fitted together through the sealing layer (4-1). The upper bolt (2) and the lower bolt (3) are screwed together between the sealing layers (4-1). A pair of slots (4-2) are provided on both ends of the sealing layer (4-1).

2. The surge arrester sheath suitable for live-line installation in power distribution networks according to claim 1, characterized in that, The protective sleeve (1) is fitted with a pair of leather sleeves (4-3), which are fixedly connected to the surface of the protective sleeve (1) on one side. A pair of sleeve blocks (4-4) are provided on the leather sleeves (4-3), and the sleeve blocks (4-4) are embedded in the slots (4-2).

3. The surge arrester sheath suitable for live-line installation in power distribution networks according to claim 1, characterized in that, The conductor assembly (5) includes a sleeve (5-1), which is disposed inside the surface of one of the protective sleeves (1), and a fixing sleeve (5-2) is screwed into the sleeve (5-1) by means of threads.

4. A surge arrester sheath suitable for live-line installation in power distribution networks according to claim 3, characterized in that, One end of the fixed sleeve (5-2) is rotatably connected to a bend sleeve (5-3). The fixed sleeve (5-2) is provided with a protrusion (5-4). A stud (5-5) is screwed into the protrusion (5-4) by a thread. One end of the stud (5-5) is provided with an anti-slip block (5-6).

5. A surge arrester sheath suitable for live-line installation in power distribution networks according to claim 3, characterized in that, A sealing ring (6) is provided on the surface of the fixing sleeve (5-2), and the sealing ring (6) is attached to the end face of the sleeve opening (5-1).

6. A surge arrester sheath suitable for live-line installation in power distribution networks according to claim 4, characterized in that, The loop (5-3) has an overall L-shaped structure.

7. A surge arrester sheath suitable for live-line installation in power distribution networks according to claim 2, characterized in that, The sleeve (4-4) has a U-shaped cross-section and is fitted into the slot (4-2) while adhering to the side surface of the sealing layer (4-1).

8. A surge arrester sheath suitable for live-line installation in power distribution networks according to claim 1, characterized in that, Each of the protective sleeves (1) has a support layer (7) at the bottom, and the support layer (7) is connected to the sealing layer (4-1).

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