CN211670393U - A 0.4kV quick-plug device for uninterrupted operation - Google Patents

Abstract

The utility model discloses a quick plug-in device for 0.4kV uninterrupted operation, which comprises a cable connecting terminal and a base connecting hardware. The bottom of the cable connecting end of the cable connecting terminal is provided with a connecting hole for connecting with the cable, and the side wall of the connecting end of the hardware is provided with a connecting hole for connecting with the cable. The strap contacts, the outer side of the cable connection terminal is provided with a terminal head insulating sheath, and the side surface of the hardware connection end and the outer side wall of the terminal head insulation sheath is respectively provided with a locking slot; the terminal connection end of the base connection hardware is provided with a The connecting end of the hardware fitting and the connecting hole of the strap contact finger are matched. The outer side of the base connecting hardware is provided with a base insulating sheath, and the side wall of the base insulating sheath is provided with a self-locking mechanism matching the locking slot. Features an unlocking sliding sleeve that slides back and forth. The utility model can increase the insulation degree of the overhead line jumper equipment and ensure the safety and reliability of the construction of the 0.4kv uninterrupted power distribution line.

Description

A 0.4kV quick-plug device for uninterrupted operation

technical field

The utility model relates to a quick plug-in device for 0.4kV uninterrupted operation in the field of electric power engineering.

Background technique

With the accelerated development of the urban construction process and the deepening of the insulation engineering of the urban power grid overhead line, people have higher and higher requirements for planned maintenance and fault repair time, less power outages or even no power outages. Among them, when the scope of operation is mainly in the densely populated area of the city center, the power outage operation will bring serious inconvenience to the urban residents and bring great economic losses to the power grid company. Especially for 0.4kV users, the requirements for the reliability of power supply are higher. The uninterrupted operation of 0.4kV distribution overhead lines has become an important factor to ensure the safe and reliable operation of the power grid, reduce power loss, provide uninterrupted power supply to users and improve the economic benefits of the power grid. Repair means. At present, the jumper connection in the urban power grid overhead line adopts a bolt-type connection structure. There is no insulation measure, and the construction must be powered off. There may be potential safety hazards in the operation without a power outage and cause unnecessary life safety accidents, and the bolt-type structure is in the There are problems such as inconvenient construction and long time during the operation without power outage. Under this circumstance, it is urgent to develop a new type of jumper wire of 0.4kV quick-plug device for uninterrupted operation, so as to improve the safety, reliability and convenience of uninterrupted operation.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a quick plug-in device for 0.4kV uninterrupted operation, which can increase the insulation degree of the overhead line jumper equipment and ensure the construction safety of the 0.4kv uninterrupted power distribution line. reliable.

A technical solution to achieve the above purpose is: a 0.4kV quick-plug device for uninterrupted operation, including cable connection terminals and base connection hardware;

The cable connection terminal is divided into a cable connection end and a hardware connection end. The bottom of the cable connection end is provided with a connection hole for connecting with the cable, the side wall of the hardware connection end is provided with a strap contact finger, and the outer side of the cable connection terminal is There is an insulating sheath of the terminal head, the two ends of the insulating sheath of the terminal head respectively extend outward to cover the cable connection end and the hardware connection end, and the hardware connection end and the outer terminal head are insulated. The surface of the side wall of the sheath is respectively provided with a locking and clamping slot;

One end of the base connecting hardware is connected to the base, and the other end is a terminal connecting end. The terminal connecting end is provided with a connection hole matching the connecting end of the hardware and the contact finger of the strap, and the base is connected to the outside of the hardware. A base insulating sheath is provided, the base insulating sheath extends outward to cover the terminal connecting end, and the side wall of the base insulating sheath is provided with a self-locking mechanism matching the locking snap groove , the outer side of the self-locking mechanism is provided with an unlocking sliding sleeve that can slide back and forth;

When the cable connection terminal is inserted into the base connection fitting, the terminal connection end is clamped in the mating gap between the insulating sheath of the terminal head and the connecting end of the fitting, and the insulating sheath of the terminal head is clamped. The self-locking mechanism is connected in the matching gap between the insulating sheath of the base and the connecting end of the terminal, and the self-locking mechanism is clamped in the locking and clamping groove.

Further, a silicone waterproof ring is sleeved on the outer side of the connecting end of the terminal head insulating sheath and the base insulating sheath.

The utility model has the following advantages:

1. It has excellent electrical performance. Compared with the same type of jumper connection, it can fully reach the type test level, so the operation is safe and reliable;

2. The traditional 0.4kV bolt-type jumper joint is made of copper and brass at the bolt connection. During the operation, due to the difference in weather and temperature, the thermal expansion and contraction ratio between the materials may be inconsistent, resulting in bolt breakage, resulting in safety accidents. The 0.4kV uninterrupted operation quick plug-in device of the utility model is designed with unified materials, and the phenomenon of inconsistent materials used in traditional devices is avoided. Fully meet the requirements of long-term operation;

3. Water resistance: The surface of the test results will not have any traces of water ingress even under the rain of 10L/min. The waterproof structure of the quick-plug head is reasonable and reliable, and it can be applied to the outdoor rain environment;

4. Long service life: The life test is a test used to evaluate the operating life of the 0.4kV quick-plug head. The test shows that the quick-plug head can withstand 5000 times of plugging and unplugging operations, and there is no significant change in contact resistance, which is suitable for frequent plugging and unplugging operations;

5. Insulation: withstand voltage test 5000V, 1min, no breakdown or breakage;

6. The design process is simpler than that of traditional bolt-type joints, which saves labor and time, and meets the requirements of emergency repairs for operating faults and construction requirements for live work.

Description of drawings

FIG. 1 is a schematic structural diagram of a 0.4kV quick-plug device for uninterrupted operation according to the present invention.

Detailed ways

In order to better understand the technical solutions of the present utility model, the following specific examples are described in detail:

Please refer to FIG. 1 , a 0.4kV quick-plug device for uninterrupted operation of the present invention includes a cable connection terminal 1 and a base connection fitting 2 .

The cable connection terminal 1 is divided into a cable connection end 11 and a hardware connection end 12. The bottom of the cable connection end 11 is provided with a connection hole for connecting with the cable, the side wall of the hardware connection end 12 is provided with a strap contact finger 13, and the outer side of the cable connection terminal 1 A terminal insulating sheath 14 is provided, and both ends of the terminal insulating sheath 14 extend outward respectively to cover the cable connecting end and the hardware connecting end, and the hardware connecting end 12 and the terminal insulating sheath 14 on the outside thereof The surfaces of the side walls are respectively provided with locking and engaging grooves 15 .

One end of the base connecting hardware 2 is connected to the base, and the other end is a terminal connecting end 21. The terminal connecting end 21 is provided with a connection hole matching the hardware connecting end 12 and the strap contact finger 13. The outer side of the base connecting hardware 2 is provided with a base insulation The sheath 22, the base insulating sheath 22 extends outward to cover the terminal connecting end 21 therein. The side wall of the insulating sheath 22 of the base is provided with a self-locking mechanism 23 matching with the locking slot, and the outer side of the self-locking mechanism 23 is provided with an unlocking sliding sleeve 24 that can slide back and forth.

When the cable connecting terminal 1 and the base connecting fitting 2 are plugged in, the terminal connecting end 21 is snapped into the mating gap between the insulating sheath 14 of the terminal and the connecting end 12 of the fitting, and the insulating sheath 14 of the terminal is snapped onto the insulating sheath of the base. In the matching gap between the sleeve 22 and the terminal connecting end 21 , the self-locking mechanism 23 is snapped into the locking snap groove 15 . The self-locking mechanism 23 cooperates with the locking snap groove 15 to limit the plug-in operation in the axial direction of the connecting portion to form a self-locking. At this time, the unlocking sliding sleeve 24 is located outside the self-locking mechanism 23 to form a protective cover, which limits the self-locking mechanism on the one hand. On the other hand, the self-locking mechanism 23 is protected to prevent the self-locking mechanism 23 from being unlocked due to misoperation.

When it is necessary to pull out the cable connection terminal 1 and the base connection fitting 2, slide the unlocking sliding sleeve 24 to the side of the base connection fitting 2 to unlock the degree of freedom of the self-locking mechanism 23, and contact the self-locking part of the connection part to perform The connection part is pulled out.

In order to ensure the waterproof performance when the cable connection terminal 1 and the base connection fitting 2 are connected, a silicone waterproof ring is sleeved on the outer side of the connection end of the terminal head insulating sheath 14 and the base insulating sheath 22.

The utility model uses the insulation waterproof quick plug method to replace the original traditional bolt type jumper connection method to realize live work construction, greatly improves the safety and reliability of operators, increases the insulation degree of overhead line jumper connection equipment, and ensures the safety of distribution lines. Reliable operation while improving construction efficiency.

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present invention, but not to limit the present invention. Changes and modifications of the embodiments will fall within the scope of the claims of the present invention.

Claims (2)

1. The utility model provides a quick plug device of 0.4kV uninterrupted power operation, includes cable junction terminal and base link fitting, its characterized in that:

the cable connecting terminal is divided into a cable connecting end and a hardware fitting connecting end, a connecting hole connected with a cable is formed in the bottom of the cable connecting end, a watchband contact finger is arranged on the side wall of the hardware fitting connecting end, a terminal head insulating sheath is arranged on the outer side of the cable connecting terminal, two ends of the terminal head insulating sheath extend outwards respectively to wrap the cable connecting end and the hardware fitting connecting end in the terminal head insulating sheath, and locking clamping grooves are formed in the hardware fitting connecting end and the surface of the side wall of the terminal head insulating sheath on the outer side of the;

one end of the base connecting hardware fitting is connected with the base, the other end of the base connecting hardware fitting is a terminal connecting end, the terminal connecting end is provided with a connecting hole matched with the hardware fitting connecting end and the watchband contact finger, a base insulating sheath is arranged on the outer side of the base connecting hardware fitting, the base insulating sheath extends outwards to wrap the terminal connecting end inside the base insulating sheath, a self-locking mechanism matched with the locking clamping groove is arranged on the side wall of the base insulating sheath, and an unlocking sliding sleeve capable of sliding back and forth is arranged on the outer side of the self-locking mechanism;

when the cable connecting terminal is inserted into the base connecting hardware fitting, the terminal connecting end is clamped in a fit clearance between the terminal insulating sheath and the hardware fitting connecting end, the terminal insulating sheath is clamped in a fit clearance between the base insulating sheath and the terminal connecting end, and the self-locking mechanism is clamped in the locking clamping groove.

2. The 0.4kV rapid plugging device without power-off operation according to claim 1, wherein silica gel waterproof rings are sleeved on the outer sides of the connecting ends of the terminal insulating sheath and the base insulating sheath.

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