CN220570181U - Bypass cable head rainproof shielding device for live working - Google Patents

Abstract

The utility model relates to a rain-proof shielding device of a bypass cable head for live working, which comprises an isolation layer positioned on the outer side of a connecting column, wherein the top of the isolation layer is detachably connected with a rain-proof cover, the connecting column extends out of the outer side of an insulating cover, the insulating cover is detachably connected with the end part of a bypass cable, the bottom of the isolation layer is provided with a clamping groove used for being connected with a wire, and the inside of the clamping groove is provided with a water-proof baffle plate. Utilize the rain-proof lid that is located outermost, with rainwater guide to the space around the spliced pole, avoid spliced pole direct contact rainwater, the isolation layer is located inside the rain-proof lid and the joint is on the wire, further blocks the rainwater outside the spliced pole through the cover, the waterproof baffle in the cooperation draw-in groove blocks the rainwater and flows into inside the isolation layer along the wire for the tie point between overhead conductor and the bypass cable no longer causes the ground connection short circuit because of the rainwater invasion, thereby promotes the reliability of power supply.

Description

Bypass cable head rainproof shielding device for live working

Technical Field

The utility model relates to the technical field of live working, in particular to a bypass cable head rainproof shielding device for live working.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

When carrying out bypass operation to overhead line, after the bypass cable is hung on overhead line generally, carry out the insulating shielding of joint part through insulating wrapping cloth and insulating fastener, during operation, if meet sleet weather, owing to adopt insulating wrapping cloth to carry out the insulating gap that covers in the structure after, make the rainwater probably flow into bypass cable head and overhead line's tie point department from the gap to flow to the grounding body along bypass cable, cause the ground short circuit, reduce the reliability of power supply.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides the bypass cable head rainproof shielding device for live working, which is characterized in that rainwater is guided to the surrounding space of a connecting column by utilizing the rainproof cover positioned on the outermost layer, the connecting column is prevented from being directly contacted with the rainwater, an isolation layer is positioned in the rainproof cover and is clamped on a lead, the outside of the connecting column is covered by the isolation layer to further block the rainwater, and a water-proof baffle in a matching clamping groove is matched with the lead to block the rainwater from flowing into the isolation layer along the lead, so that the connection point between an overhead lead and a bypass cable is not in short circuit due to the intrusion of the rainwater, and the reliability of power supply is improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a rain-proof shielding device of a bypass cable head for live working, which comprises an isolation layer positioned on the outer side of a connecting column, wherein the top of the isolation layer is detachably connected with a rain-proof cover, the connecting column extends out of the outer side of an insulating cover, the insulating cover is detachably connected with the end part of a bypass cable, the bottom of the isolation layer is provided with a clamping groove used for being connected with a wire, and the inside of the clamping groove is provided with a water-proof baffle plate.

The connecting column is positioned at the end part of the bypass cable; the connection post is connected with the conductor of the bypass cable to form a connection point of the bypass operation system.

The rain cover is umbrella-shaped and guides rainwater to the surrounding space of the connecting column.

The isolation layer is located rain-proof lid inner space and covers in the spliced pole outside.

The isolating layer is hollow cylinder; the top of the isolation layer is sealed and the bottom is provided with a clamping groove for clamping the lead.

The water-proof baffle in the clamping groove is provided with an opening for accommodating the wire and is made of flexible materials, and a physical barrier is formed in the circumferential direction of the wire.

The insulating cover is provided with a mounting hole for an insulating rod operation method.

Compared with the prior art, the above technical scheme has the following beneficial effects:

1. utilize the rain-proof lid that is located outermost, with rainwater guide to the space around the spliced pole, avoid spliced pole direct contact rainwater, the isolation layer is located inside the rain-proof lid and the joint is on the wire, further blocks the rainwater outside the spliced pole through the cover, the waterproof baffle in the cooperation draw-in groove blocks the rainwater and flows into inside the isolation layer along the wire for the tie point between overhead conductor and the bypass cable no longer causes the ground connection short circuit because of the rainwater invasion, thereby promotes the reliability of power supply.

2. The waterproof baffle in the draw-in groove forms the physical barrier at the circumferencial direction of wire after the closure, and the seam play the effect of rain-proof groove after the closure makes the rainwater flow to bypass cable outer space along rain-proof groove, avoids causing the ground connection short circuit to have the shutting function of certain degree after the waterproof baffle is closed, can guarantee that can not drop in the operation process.

3. The insulating cover protects the area from rain water from the root of the connection post to the end of the bypass cable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic illustration of a bypass service cable provided by the present utility model;

FIG. 2 is a schematic view of the structure of the rainproof shielding device provided by the utility model;

fig. 3 is a schematic diagram of a front view structure of the rainproof shielding device provided by the utility model after a rainproof cover is hidden;

FIG. 4 is a schematic side view of the rainproof cover hidden by the rainproof shielding device;

fig. 5 is a schematic view of the rainproof shielding device provided by the utility model after being connected with a bypass operation cable.

In the figure: 10 wires, 20 bypass cables, 1 rain cover, 2 isolation layers, 3 connecting posts, 4 insulating covers and 5 waterproof baffles.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

The bypass operation insulation shielding working scheme in the traditional mode is as follows:

taking a 10kV overhead line as an example, shielding by adopting insulating wrapping cloth is not carried out in other measures. The bypass cable is fixed through the insulating cross arm installed on the pole tower, so that the stress of the joint of the bypass cable head and the overhead line is reduced, the bypass cable head is installed on the overhead line, after the bypass cable is reliably fixed, the connecting part of the bypass cable head and the overhead line is insulated and shielded by the insulating wrapping cloth, and the insulating wrapping cloth is fixed by the insulating clamp, so that the insulating shielding effect is achieved.

As shown in fig. 1, although the insulating wrap used at the connection point between the bypass cable 20 and the wire 10 can meet the requirement of insulation performance, it cannot block rainwater from invading the connection point in rainy and snowy days, and the rainwater may flow to the grounding body along the bypass cable, causing a ground short circuit, and affecting the power supply reliability.

Therefore, the following embodiment provides a bypass cable head rainproof shielding device for live working, and an insulating shielding cover is arranged at the joint of a bypass cable head and an overhead line, so that the power supply reliability is ensured under the special condition of encountering rainy and snowy weather in the process of the bypass working.

As shown in fig. 2-5, a rain-proof shielding device of bypass cable head for live working includes an isolation layer 2 located outside a connection column 3, the connection column 3 extends outside an insulation cover 4, the insulation cover 4 is detachably connected with the end part of a bypass cable 20, the connection column 3 is accommodated in the inner space of the isolation layer 2, a rain-proof cover 1 is detachably connected to the top of the isolation layer 2, a clamping groove used for being connected with a wire 10 is arranged at the bottom of the isolation layer 2, and a water-proof baffle 5 is arranged inside the clamping groove.

The connection post 3 is located at the end of the bypass cable 20 and is connected to the conductors of the bypass cable 20, the connection post 3 being intended to be connected to the wire 10 to form a connection point for the bypass work system.

The rain cover 1 is positioned at the outermost layer and is umbrella-shaped, so that rainwater can be guided to the surrounding space of the connecting column 3, and the connecting column 3 is prevented from being directly contacted with the rainwater.

The isolation layer 2 is positioned in the middle layer, is positioned in the rain cover 1 and covers the outer side of the connecting column 3, is hollow and cylindrical, and is provided with a clamping groove at the closed bottom at the top for clamping the lead 10.

The water-proof baffle 5 in the clamping groove is provided with an opening for accommodating the wire and is made of flexible materials, such as two pieces of insulating rubber, and the opening forms an omega shape and is used for forming a physical barrier in the circumferential direction of the wire 10 so as to prevent rainwater from flowing into the isolation layer 2 along the wire 10 and contacting with the connecting column 3.

The insulating cover 4 is located at the end of the bypass cable 20, protecting the area from rain water from the root of the connection post 3 to the end of the bypass cable 20.

The insulating cover 4 is reserved with a mounting hole for an insulating rod operation method, and when the insulating arm vehicle cannot approach an overhead line, the insulating rod operation method is required to be used for mounting the insulating operation rod hook.

The rain cover 1, the isolation layer 2 and the insulation cover 4 are all made of insulating materials, and are used for insulating and shielding an overhead line for installing a bypass cable, for example, other insulating and shielding tools are installed on the overhead line, and the length of the lap joint part between the device and the overhead line is not less than 150mm.

The above structure also requires attention to the following operations:

1. the device has to be used at a voltage level of 10 kV.

2. The device is tested at intervals of set time periods, for example, the device is tested once every half year, the device comprises appearance inspection and power frequency withstand voltage test, the voltage and time of the power frequency withstand voltage test are 20kV/3min, and the test is carried out by selecting units with relevant qualification.

3. Before the operation, the device should be checked for appearance and the surface cleaning should be confirmed without damage.

4. The device should be subjected to insulation detection before operation.

5. When in installation, operators should wear the insulation protection tools and meet the related requirements.

6. If other insulating shielding tools are arranged on the overhead line, the length of the lap joint part between the device and the overhead line is not less than 150mm.

7. After the installation is completed, the device should be ensured not to fall off, and fixing measures can be taken if necessary.

8. The device can prevent contact with sharp objects, strong acid, strong alkali and other corrosive liquids during the storage, transportation and use processes.

9. The device should be stored in a warehouse that meets the requirements of DL/T974.

10. When the device is dirty, the device is cleaned by neutral detergent such as soap at the water temperature of 20-40 ℃, and the surface is coated with talcum powder after drying.

The device is used in the bypass operation process, replaces the original insulating shielding tool, enables the bypass system to be built to be in rainy and snowy weather, cannot cause grounding short circuit, guarantees the reliability of power supply, and ensures that power users can use electricity normally.

The device can shield bypass cable head, insulating overhead line completely to the seam of omega shape's water proof baffle in the outside has the effect of rain-proof groove, makes the rainwater can flow along the rain-proof groove, avoids causing the ground connection short circuit.

The closed water-proof baffle plate with the omega shape has a locking function to a certain extent, and can be prevented from falling off in the operation process.

The device has the insulation performance meeting the bypass operation requirement, can replace the original insulation shielding tool, and ensures the safety of personnel, power grid and equipment in the operation process.

Compared with the original insulating shielding tool, the device is simple to operate and has lower requirements on the technical level of operators in the installation process. The safety and the power supply reliability are improved, and meanwhile, the labor intensity is effectively reduced.

The device application scope is wider, to the circuit that insulating arm car can't be close to, can install through the insulator spindle operation method.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a rain-proof shielding device of bypass cable head for live working, its characterized in that, including the isolation layer that is located the spliced pole outside, the rain-proof lid of connection can be dismantled at the isolation layer top, and the spliced pole stretches out the insulating boot outside, and the insulating boot can be dismantled with bypass cable's tip and be connected, and the isolation layer bottom is equipped with the draw-in groove that is used for being connected with the wire, and the draw-in groove is inside to be equipped with water proof baffle.

2. A bypass cable head weather shield as set forth in claim 1, wherein said connector post is located at an end of the bypass cable.

3. A bypass cable head weather shield as set forth in claim 2, wherein said connection post is connected to the conductors of the bypass cable to form the connection point of the bypass operating system.

4. A bypass cable head weather shield as set forth in claim 1, wherein said weather shield is umbrella-shaped to guide rainwater to the surrounding space of the connection post.

5. A bypass cable head weather shield as set forth in claim 1, wherein said barrier is located in the interior space of the weather shield and covers the outside of the connector post.

6. A bypass cable head weather shielding apparatus for live working as set forth in claim 5, wherein said insulating layer is hollow cylindrical.

7. The bypass cable head rain shield assembly of claim 6, wherein the top closed bottom of the isolation layer has a slot for engaging a wire.

8. A bypass cable head weather shield as set forth in claim 7 wherein said water barrier in said clamping groove defines an opening for receiving a wire and is flexible.

9. A bypass cable head weather shield as set forth in claim 8, wherein said water barrier forms a physical barrier in the circumferential direction of the conductor.

10. A bypass cable head weather shield as set forth in claim 1, wherein said insulating cover is provided with mounting holes for an insulating rod operation.