Insulating sleeve assembly for crossing operation
By designing the insulated sleeve assembly, the combined structure of the inner sleeve, outer sleeve and hook joints is used to solve the problem of the sleeve not moving smoothly on the wire, achieving efficient and safe leapfrog work, and improving insulation and impact resistance.
Patent Information
- Application Number
- CN202422272450.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing protective sleeves are not moving smoothly on the wire, resulting in low efficiency and safety risks across operations.
An insulated sleeve assembly including an inner sleeve, an outer sleeve and a hook joint is designed. The traction rope is used to move on the wire. The inner sleeve and the outer sleeve are circumscribed with an offset threading notch and are fixed by a hook joint. The sleeve is circumscribed with a plurality of hook joints to ensure stability.
It realizes flexible movement of the sleeve on the wire, improves the efficiency of leapfrog work, enhances safety, and has excellent insulation and impact resistance.
Smart Images
Figure CN223093381U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of high-voltage power grid operation, and particularly relates to an insulating bushing assembly for spanning operation. Background Art
[0002] When spanning operation is carried out in a high-voltage power transmission network, taking the ultra-high voltage of 750 kV as an example, the 750-kV power line to be spanned is powered off throughout the spanning period. After power verification and grounding wire hanging, the risk of electric shock is maximally avoided. The remaining main risks are power grid accidents, high-altitude falls, and object strikes, etc. Compared with high-altitude falls and object strikes, the pre-control of power grid accidents is the most important point for taking measures in spanning operation. To better solve the safety of spanning construction and ensure the safe and reliable operation of the power grid, a protective sleeve is sleeved on the ground wire, optical cable, and side conductors of the 750-kV power line to be spanned for protection. Specifically, protective sleeves are installed on the ground wire, optical cable, left conductors 1 and 2, and right conductors 5 and 6 respectively. The protective sleeve is mainly used to resist the impact damage of the conductor and ground wire on the power line to be spanned under accident conditions. Currently, the length of the protective sleeve is mainly about 6 m, and it needs to be adjusted according to the working position of the staff on the conductor between two iron towers. Currently, the protective sleeve is mainly wrapped with an insulating sleeve, but its movement on the conductor is extremely unsmooth, which makes the efficiency of the spanning operation low and there are some potential safety risks. Summary of the Utility Model
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an insulating bushing assembly for spanning operation that is simple to assemble, has good insulating protection effect, and can move flexibly along the length direction of the conductor under the traction of a traction rope on the conductor.
[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows: An insulating bushing assembly for spanning operation, including a bushing member and a traction rope. Both the bushing member and the traction rope are made of insulating materials. The bushing member is used to be sleeved on the conductor to be spanned, and one end of the traction rope is tied to the bushing member.
[0005] The beneficial effect of the above technical solution is that: In this way, the bushing member can be sleeved on the conductor, and then one end of the traction rope is connected to the bushing member. At this time, the traction rope can hang down to the ground, and the operator on the ground pulls the traction rope to drive the bushing member to move along the length direction of the corresponding conductor to adjust the position of the bushing member on the conductor as needed.
[0006] In the above technical solution, the casing member includes an inner casing, an outer casing, and a ferrule. Through holes extending through both ends are provided on the tube walls of the inner casing and the outer casing, and the inner casing is disposed inside the outer casing. The inner casing is sleeved on the wire, the outer casing is sleeved on the inner casing, and the through holes in the two are staggeredly distributed in the circumferential direction, so that the wire is circumferentially wrapped by the inner casing and the outer casing together, and the ferrule is ferrule-connected outside the outer casing.
[0007] The beneficial effect of the above technical solution is as follows: In this way, both the inner casing and the outer casing can be conveniently sleeved on the wire. Then, the outer casing is wrapped outside the inner casing. Next, the inner casing and the outer casing are rotated until their through holes face away from each other, so that the wire can be circumferentially wrapped by the inner casing and the outer casing together. Then, a ferrule is provided on the outer casing for circumferential ferrule connection, which can prevent the outer casing and the inner casing from being circumferentially displaced or falling off the wire.
[0008] In the above technical solution, both the inner casing and the outer casing are made of epoxy resin.
[0009] The beneficial effect of the above technical solution is as follows: It has good insulation performance, and both the impact resistance and durability are good.
[0010] In the above technical solution, a plurality of ferrules are provided, and the plurality of ferrules are spaced apart along the length direction outside the outer casing.
[0011] The beneficial effect of the above technical solution is as follows: In this way, the outer casing can be circumferentially ferrule-connected by a plurality of ferrules, which makes the wrapping effect of the outer casing and the inner casing on the wire better.
[0012] In the above technical solution, the ferrule is a wire clamp, a cable tie, or a hose clamp.
[0013] The beneficial effect of the above technical solution is as follows: It has a simple structure and is convenient to install.
[0014] In the above technical solution, the inner casing and the outer casing have the same length.
[0015] The beneficial effect of the above technical solution is as follows: In this way, when the outer casing is wrapped outside the inner casing, the two ends of the outer casing and the inner casing are flush.
[0016] In the above technical solution, the cross-sections of the outer casing and the inner casing are both "C" shaped.
[0017] The beneficial effect of the above technical solution is as follows: It has a simple structure and enables it to be conveniently sleeved on the wire.
[0018] In the above technical solution, the central angles corresponding to the through holes of the outer casing and the inner casing are both 10 - 60°.
[0019] The beneficial effects of the above technical solution are as follows: In this way, the inner sleeve and the outer sleeve are not easily dropped during pre-installation on the wire, and after the two are combined, they can wrap the wire circumferentially.
[0020] In the above technical solution, two traction ropes are provided, and one traction rope is provided at each end of the sleeve member.
[0021] The beneficial effects of the above technical solution are as follows: In this way, any one of the traction ropes can be selectively pulled to pull and slide the sleeve member on the wire in the corresponding direction.
[0022] In the above technical solution, the length of the sleeve member is 1-3 m.
[0023] The beneficial effects of the above technical solution are as follows: Its structure is simple, and it avoids excessive frictional resistance between the sleeve member and the wire due to excessive length. Description of the Drawings
[0024] Figure 1 Schematic assembly diagram of the insulating sleeve assembly described in the embodiment of the present invention on the wire;
[0025] Figure 2 Schematic assembly diagram of the sleeve member described in the embodiment of the present invention on the wire;
[0026] Figure 3 Schematic initial assembly diagram of the inner sleeve and the outer sleeve on the wire in the embodiment of the present invention;
[0027] Figure 4 Schematic assembly diagram when the inner sleeve and the outer sleeve wrap the wire in the embodiment of the present invention;
[0028] Figure 5 Schematic diagram when the insulating sleeve assembly described in the embodiment of the present invention adjusts its position on the wire;
[0029] Figure 6 Schematic diagram of multiple insulating sleeve assemblies described in the embodiment of the present invention assembled on the wire.
[0030] In the figure: 10 insulating sleeve assembly; 1 sleeve member; 11a inner sleeve; 11b outer sleeve; 111 wire-passing notch; 12 ferrule; 2 traction rope; 20 wire; 30 iron tower. Detailed Embodiments
[0031] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present utility model.
[0032] As Figure 1 shown, this embodiment provides an insulating bushing assembly for spanning operations. Specifically, the insulating bushing assembly 10 includes a bushing member 1 and a traction rope 2. Both the bushing member 1 and the traction rope 2 are insulating material members. The bushing member 1 is used to sleeved on the wire 20 to be spanned. One end of the traction rope 2 is tied to the bushing member 1. In this way, the bushing can be sleeved on the wire, and then one end of the traction rope is connected to the bushing member. At this time, the traction rope can droop to the ground, and the operating personnel on the ground can pull the traction rope to drive the bushing member to move along its length direction on the corresponding wire to adjust the position of the bushing member on the wire as needed. Among them, two traction ropes 2 are provided, and one traction rope 2 is provided at each end of the bushing member 1. In this way, either one of the traction ropes can be pulled to pull and slide the bushing member in the corresponding direction on the wire.
[0033] In this embodiment, the insulating rope can be made of insulating silk rope.
[0034] As Figures 2 - 4 shown, in the above technical solution, the bushing member 1 includes an inner bushing 11a, an outer bushing 11b, and a hoop joint 12. Through holes 111 penetrating both ends are provided on the tube walls of the inner bushing 11a and the outer bushing 11b, and the inner bushing 11a is placed inside the outer bushing 11b; the inner bushing 11a is sleeved on the wire 20, and the outer bushing 11b is sleeved on the inner bushing 11a, and their through holes 111 are distributed in a circumferentially offset manner, so that the wire 20 is circumferentially wrapped by the inner bushing 11a and the outer bushing 11b together. The hoop joint 12 is hoop-connected outside the outer bushing 11b. In this way, both the inner bushing and the outer bushing can be conveniently sleeved on the wire, then the outer bushing is wrapped outside the inner bushing, and then the inner bushing and the outer bushing are rotated until their through holes face away from each other, so that the wire can be circumferentially wrapped by the inner bushing and the outer bushing together, and then a hoop joint is provided on the outer bushing for circumferential hoop connection. This can prevent the outer bushing and the inner bushing from circumferentially shifting or falling off the wire.
[0035] In the above technical solution, both the inner bushing 11a and the outer bushing 11b are made of epoxy resin material, which has good insulation effect, and good impact resistance and durability.
[0036] As Figure 2 shown, in the above technical solution, a plurality of ferrule connectors 12 are provided, and the plurality of ferrule connectors 12 are spaced apart along the length direction of the outer sleeve 11b. In this way, the outer sleeve can be circumferentially ferrule-connected by a plurality of ferrule connectors, so that the wrapping effect of the outer sleeve and the inner sleeve on the wire is better.
[0037] Specifically, 2 or 3 ferrule connectors can be provided.
[0038] In this embodiment, the two traction ropes are respectively tied to the ferrule connectors at the corresponding ends.
[0039] In the above technical solution, the ferrule connector 12 is a wire clip, a cable tie or a hose clamp, which has a simple structure and is easy to install.
[0040] In the above technical solution, the lengths of the inner sleeve 11a and the outer sleeve 11b are the same. In this way, when the outer sleeve is wrapped outside the inner sleeve, the two ends of the outer sleeve and the inner sleeve are flush.
[0041] As Figure 3 and Figure 4 shown, in the above technical solution, the cross-sections of the outer sleeve 11b and the inner sleeve 11a are both "C" shaped, which has a simple structure and enables them to be conveniently sleeved on the wire. Specifically, the central angles corresponding to the wire-passing notches 111 of the outer sleeve 11b and the inner sleeve 11a are both 10 - 60° (specifically, any value among 10°, 20°, 30°, 40°, 50° or 60° or the range corresponding to any two values). In this way, when the inner sleeve and the outer sleeve are pre-installed on the wire, they are not easy to fall off, and after the two are combined, they can circumferentially wrap the wire.
[0042] In the above technical solution, the length of the sleeve member 1 is 1 - 3 m (any value among 1 m, 2 m or 3 m or the range corresponding to any two values), which has a simple structure and avoids excessive frictional resistance between the sleeve member and the wire due to excessive length.
[0043] In this embodiment, the ferrule connectors cannot make the outer sleeve and the inner sleeve too tight during the wire assembly, otherwise it will be difficult for the sleeve member to move on the wire under the traction of the traction rope. In this application, the main function of the fixing member is to prevent the outer sleeve and the inner sleeve from loosening from the wire, and after the ferrule connectors are assembled in place, the sleeve member can be flexibly toggled left and right under the action of an external force on the wire.
[0044] In this embodiment, the wire 20 is suspended between the two iron towers 30. In actual use, the safe length of the insulating treatment on the wire needs to be about 6 m. Therefore, at this time, as Figure 6As shown, 2 or 3 insulating sleeve assemblies 10 are sleeved on the conductor 20, and the ends of two adjacent sleeve assemblies close to each other are abutted against each other, so that the total length of the splicing can reach the safe length for insulation treatment.
[0045] The main method for adjusting the position of a single insulating sleeve assembly on a conductor is as follows: Figure 5 As shown, when the casing needs to be moved closer to the iron tower at either end of the conductor, the traction rope at the corresponding end of the casing can be pulled obliquely toward the side of the iron tower ( Figure 5 The arrow at the bottom indicates the pulling direction of the traction rope, and the arrow at the top indicates the moving direction of the sleeve along the conductor under the pulling of the traction rope), while the other traction rope is in a relaxed state.
[0046] like Figure 6 As shown, after the position of the sleeve on the conductor is adjusted into place, the lower ends of the two traction ropes can be pulled apart in an eight-shaped shape and anchored on the ground (specifically, they can be anchored on the ground by inserting an iron rod) to prevent the sleeve from slipping on the conductor.
[0047] The insulating sleeve assembly provided in this embodiment has good durability and is reusable. Figure 3 As shown, the outer sleeve is first wrapped around the inner sleeve, and the threading notch of the outer sleeve and the threading notch of the inner sleeve are aligned with each other, and then the wire is embedded into the inner sleeve through the threading notch, and then the outer sleeve is rotated until its threading notch and the threading notch of the inner sleeve are away from each other (such as Figure 4 As shown in the figure, the hoop connector can be installed, and the insulating sleeve assembly can be assembled on the conductor. At this time, the staff can assemble it on the iron tower at either end of the conductor.
[0048] In this embodiment, a traction rope is set on the casing member. After the traction rope falls to the ground, the ground personnel pull the traction rope to drag the casing member to the crossing point of the conductor, and then anchor the traction rope to the ground. The crossing construction is generally carried out phase by phase. The convenience of the casing member provided in this embodiment is also reflected in that after the crossing of one phase of the ground wire is completed, the protective casing member can be quickly dragged to the next phase crossing point for fixing, that is, only one protective casing is installed to meet the needs of the entire crossing construction. The total time required for the erection, dismantling, sealing and dismantling of the traditional three-phase crossing frame is 2-3 days, and it may take 1 more day when encountering complex terrain (such as mountainous areas); and the removal of the casing member of this embodiment can be carried out in the reverse order of installation, and the installation, dismantling and transfer of the casing member only takes a few hours or even minutes. The saved operation time is equivalent to reducing the power outage duration, and shortening the power outage duration is a manifestation of creating economic benefits.
[0049] The above is only the preferred embodiment of the present utility model and does not impose any formal restrictions on the present utility model; any ordinary technician in the industry can smoothly implement the present utility model according to what is shown in the accompanying drawings of the specification and the above description; however, any minor changes, modifications and equivalent variations made by those skilled in the art within the scope of the technical solution of the present utility model by using the technical content disclosed above are all equivalent embodiments of the present utility model; at the same time, any changes, modifications and equivalent variations made to the above embodiments based on the substantial technology of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An insulating bushing assembly for spanning operations, characterized in that, It includes a sleeve member (1) and a traction rope (2). Both the sleeve member (1) and the traction rope (2) are made of insulating materials. The sleeve member (1) is used to be sleeved on the wire (20) to be spanned, and one end of the traction rope (2) is tied to the sleeve member (1).
2. The insulating bushing assembly for spanning operation according to claim 1, wherein, The sleeve member (1) includes an inner sleeve (11a), an outer sleeve (11b) and a clamping member (12). Through wire notches (111) penetrating through both ends are provided on the tube walls of the inner sleeve (11a) and the outer sleeve (11b), and the inner sleeve (11a) is placed inside the outer sleeve (11b); the inner sleeve (11a) is sleeved on the wire (20), the outer sleeve (11b) is sleeved on the outside of the inner sleeve (11a), and their through wire notches (111) are distributed out of phase in the circumferential direction, so that the wire (20) is circumferentially wrapped by the inner sleeve (11a) and the outer sleeve (11b) together, and the clamping member (12) is clamped outside the outer sleeve (11b).
3. The insulating bushing assembly for spanning operation according to claim 2, characterized in that, Both the inner sleeve (11a) and the outer sleeve (11b) are made of epoxy resin materials.
4. The insulating bushing assembly for spanning operation according to claim 2, wherein A plurality of the clamping members (12) are provided, and the plurality of clamping members (12) are spaced apart along the length direction outside the outer sleeve (11b).
5. The insulating bushing assembly for spanning operation according to claim 2, characterized in that, The clamping member (12) is a wire clamp, a cable tie or a hose clamp.
6. The insulating bushing assembly for spanning operation according to claim 2, wherein The inner sleeve (11a) and the outer sleeve (11b) have the same length.
7. The insulating bushing assembly for spanning operation according to claim 2, characterized in that, The cross-sections of the outer sleeve (11b) and the inner sleeve (11a) are both "C" shaped.
8. The insulating bushing assembly for spanning operation according to claim 7, wherein, The central angles corresponding to the through wire notches (111) of the outer sleeve (11b) and the inner sleeve (11a) are both 10 - 60°.
9. The insulating bushing assembly for spanning operation according to any one of claims 1-8, characterized in that Two traction ropes (2) are provided, and one traction rope (2) is provided at each end of the sleeve member (1).
10. The insulating bushing assembly for spanning operation according to any one of claims 1-8, characterized in that, The length of the sleeve member (1) is 1 - 3m.