CN113937696A

CN113937696A - Junction box for electric power supply device capable of avoiding water accumulation of wiring terminal

Info

Publication number: CN113937696A
Application number: CN202111087725.5A
Authority: CN
Inventors: 闫学义; 袁方; 闫壮壮
Original assignee: State Grid Henan Power Co Qinyang Power Supply Co
Current assignee: State Grid Henan Power Co Qinyang Power Supply Co
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-14
Anticipated expiration: 2041-09-16
Also published as: CN113937696B

Abstract

The invention relates to a junction box for an electric power supply device for avoiding the water accumulation of a binding post in the technical field of distribution equipment, which comprises a box body, wherein a wire arranging box is fixed at the bottom of the box body, a water outlet is arranged at the bottom of the wire arranging box, a wiring board is fixed in the box body, the binding post is arranged on the wiring board, a fastening piece and a heating piece are arranged on the binding post, a lead connected with the binding post passes through a lead hole at the bottom of the box body and then enters the wire arranging box, and extends out of a wire outlet of the wire arranging box, and the wire outlet is provided with an adjustable sealing piece; a fan, a temperature sensor and a humidity sensor which are connected with the PLC are also arranged in the box body. The invention has reasonable structure and simple operation, improves the reliability of the connection of the lead and the wiring terminal, can timely adjust the temperature and the humidity in the wiring box, avoids the influence of overhigh temperature on the normal work or the influence of accumulated water on the wiring terminal with overhigh humidity on the normal work of a circuit, has strong integral stability, regularity and sealing property and is convenient for maintenance and management.

Description

Junction box for electric power supply device capable of avoiding water accumulation of wiring terminal

Technical Field

The invention relates to the technical field of distribution equipment, in particular to a junction box for an electric power supply device, which avoids water accumulation of a binding post.

Background

In the auxiliary equipment of the power and communication system, the junction box is a common equipment, the common junction box is a closed box-shaped product, the junction box is one of the auxiliary power materials, because the wire in the power line is a through pipe or a cable bridge, the junction box is used as a transition at the joint part of the wire, the wire is connected with the junction box, and the wire in the wire is connected in the junction box to play the role of protecting the wire and connecting the wire, therefore, the junction box is commonly used for the interconnection of a large and medium power transformer in the power industry and a mutual inductor sleeve outgoing wire, but the junction box has poor heat dissipation performance in the use process, can not timely dissipate heat, shortens the service life of the junction box, even causes short circuit and danger of the line, has larger space in the junction box, is easy to enter moist gas, once the junction box is in a moist environment for a long time, water can be accumulated on the junction box, so that the safe use of the junction box is influenced, and the smooth wiring line cannot be well realized.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a junction box for an electric power supply device, which avoids the water accumulation of a binding post, and comprises a box body, wherein a wiring door capable of being opened and closed is arranged on the box body, a wire arranging box is fixed at the bottom of the box body, a wire arranging door capable of being opened and closed is arranged on the wire arranging box, a water outlet is arranged at the bottom of the wire arranging box, a wiring board is fixed in the box body, the binding post is arranged on the wiring board, a fastening piece and a heating piece are arranged on the binding post, a lead connected with the binding post penetrates through a lead hole at the bottom of the box body and then enters the wire arranging box and extends out of a wire outlet of the wire arranging box, and an adjustable sealing piece is arranged at the wire outlet;

still be equipped with fan, temperature sensor and humidity transducer in the box body, the fan is connected with the outside rotation motor of box body, temperature sensor, humidity transducer, rotation motor and heating member all are connected with the PLC controller.

Preferably, the fastener includes the threaded rod, the one end of threaded rod is connected with the terminal after stretching into the box body and running through the wiring board, the threaded rod passes through the bearing and is connected with the terminal rotation, and the other end of threaded rod stretches out outside the box body and is connected with the knob, threaded rod and box body screw-thread fit. Make the threaded rod drive terminal axial displacement through rotating the knob, adapt to the not connection of the wire of equidimension and terminal, terminal cooperation wiring board is with the tight fixed firm of wire, has avoided not hard up of wiring, ensures that wire and terminal are reliably connected.

Preferably, the heating member is an electric heating ring, the electric heating ring is fixed on the back of the wiring board corresponding to the wiring board, and the corresponding threaded rod penetrates through the electric heating ring and is in threaded fit with the electric heating ring. The setting of this department heats from the wiring board back, and the heat passes through threaded rod and wiring board transmission for the terminal, has not only avoided directly heating the normal work that influences the wire to the terminal, and the local heating has practiced thrift the energy, ensures the heating effect through the cooperation of heat-conduction and fan.

Preferably, the sealing member includes the shell that matches with the outlet, the shell is cylindric, and the one end of shell stretches into the outlet, is located to be equipped with the opening on the intraoral shell of outlet towards the ring channel of the shell other end, the opening part of ring channel is fixed with round elasticity hoop, the other end of shell is equipped with the swivel becket, be equipped with the external screw thread on the outer wall of swivel becket, be equipped with the internal thread on the inner wall of the shell that the swivel becket corresponds, swivel becket and shell screw-thread fit, the one end that the swivel becket is close to elasticity hoop is connected with the spacing ring through the bearing rotation, the tip of spacing ring be equipped with ring channel assorted stand pipe, the inner wall of the spacing ring at stand pipe rear and the outer wall of elasticity hoop cooperate and the diameter of spacing ring inner wall progressively reduce. This department sets up and to arrange in order the fastening to the wire that stretches out from the outlet, the diameter of the inner wall at the stand pipe rear of spacing ring progressively reduces, through rotating the swivel collar, make the spacing ring remove in the shell, under the guide effect of stand pipe and ring channel, along with the stand pipe constantly stretches into in the ring channel, the inner wall of spacing ring constantly compresses the elasticity hoop, make the elasticity hoop closely wrap up the extrusion seal with the wire and play, the realization is to the sealed effect of arrangement of wire, the elasticity hoop has avoided causing hard injury to the wire simultaneously.

Preferably, the bottom of the box body is provided with two symmetrical inclined planes, the inclined planes extend into the wire arranging box, the lowest end of each inclined plane is provided with a water outlet, two wire outlets are arranged in the wire arranging box, and the wire outlets correspond to the inclined planes. The wire box is provided with a reasonably planned wire connection, so that the wire connection is more convenient, the conditions of wire inlet and wire outlet misconnection are avoided, and meanwhile, hot air and water vapor in the box body are conveniently discharged after entering the wire box.

Preferably, the box body and the wire arranging box are fixedly provided with mounting pieces, and the mounting pieces are provided with mounting holes, so that the mounting and the dismounting are convenient.

Preferably, a plurality of Z type spacers are fixedly installed in the water outlet, the water outlet is divided into a plurality of water outlet channels by the Z type spacers in uniform distribution, and the water outlet channels are arranged at the positions so as to effectively prevent external humid air or water vapor from entering the wire processing box and avoid damaging equipment in the wire processing box.

Preferably, the inner wall of the wire hole is provided with an elastic sealing layer, the elastic sealing layer can play a role in protecting, buffering and restraining the wire passing through the wire hole, and the elastic sealing layer is in close contact with the wire to prevent water vapor sundries from entering.

Preferably, a switch valve is arranged at the water outlet and connected with the PLC.

The invention also comprises other components which can ensure that the junction box for the electric power supply device for avoiding the water accumulation of the binding post can be normally used, and the like are conventional technical means in the field. In addition, the devices or components which are not limited in the invention all adopt the conventional technical means in the field, and for example, fans, temperature sensors, humidity sensors, PLC controllers, wiring terminals, elastic hoops, switch valves and the like are all conventional equipment in the field.

The working principle of the invention is that when in use, the rotating ring of the sealing element is rotated reversely, the maximum diameter of the inner wall of the limiting ring is matched with the elastic hoop ring, the internal space of the sealing element is maximized, the lead can conveniently enter, the lead extends into the sealing element at the outlet of the wire arranging box, the wire arranging door of the wire arranging box and the wiring door of the box body are opened, the leads respectively penetrate through the lead holes and enter the box body, and are connected to corresponding wiring terminals, the wiring terminals are moved backwards by rotating the threaded rods correspondingly connected with the wiring terminals, the leads are ensured to be fully contacted with the wiring terminals and fixed between the wiring terminals and the wiring board, and the conduction of a circuit is prevented from being influenced by looseness; after all wires connect, close wiring door and reason line door, the swivel becket forward rotates, drives spacing ring and removes in the reason line box, removes the in-process, and in the stand pipe constantly stretched into the ring channel, the spacing ring constantly moves forward, and the inner wall of spacing ring constantly extrudees the elasticity hoop, makes the elasticity hoop live the tight fixed seal of wire, and this department sets up and can seal up the fastening to the wire of equidimension not, quantity, strong adaptability, and application scope is wide.

When the temperature in the box body is too high, the temperature sensor transmits a signal to the PLC, the PLC controls the rotation motor to start, so that the fan starts to rotate, the water outlet is opened, hot air in the box body enters the wire arranging box through the water outlet and then is discharged from the water outlet, and the rotation motor stops rotating after the temperature in the box body is reduced to normal; when the humidity in the box body is too high, the humidity sensor transmits a signal to the PLC, the PLC controls the electric heating ring to heat and simultaneously rotates the motor to start, the fan starts to rotate, the water outlet is opened, the heat heated by the electric heating ring is transmitted to the wiring terminal along with the threaded rod, water on the wiring terminal is evaporated, the fan rotates to uniformly disperse the heat into the box body, the water in the box body is evaporated and enters the wire arranging box from the water outlet and then is discharged from the water outlet, the humidity in the box body is reduced to normal, the electric heating ring stops heating, the motor stops rotating, and the water outlet is closed.

The invention has the advantages of reasonable structure and simple operation, improves the connection reliability of the wire and the binding post through the arrangement of the fastener, and ensures the conduction of the circuit; the fan, the temperature sensor, the humidity sensor and the electric heating ring are matched with each other, so that the temperature and the humidity in the wiring box can be timely adjusted, and the influence of overhigh temperature on normal work or the influence of accumulated water on the wiring terminal with overhigh humidity on the normal work of a circuit is avoided; the arrangement of the wire hole, the wire arranging box and the sealing element improves the stability, the regularity and the sealing property of the wire, is convenient for maintenance and management, and meanwhile, the wire arranging box plays a role in transitional isolation on the box body, so that a large amount of water vapor is prevented from directly entering the box body; the service life of terminal box has been improved in each subassembly mutually supporting, and heat dispersion is good, avoided the terminal ponding, and the maintenance management of being convenient for, strong adaptability.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic structural view of a seal in an embodiment of the present invention;

FIG. 5 is a schematic view of the stop collar of the seal of FIG. 4 shown maximally compressed against the elastomeric band.

In the figure: 1. the temperature sensor comprises a box body, a wire arranging box, a mounting piece, a wiring board, a wiring terminal, a wiring line, a wire, a rotating motor, a fan, a humidity sensor, a temperature sensor, a water outlet, a rotating ring, an electric heating ring, a threaded rod, a rotating shaft and a rotating shaft, wherein the box body comprises a box body, a wire arranging box, a mounting piece, a rotating shaft, a rotating.

Detailed Description

The present invention will be described more clearly with reference to the accompanying drawings, which are included to illustrate and not to limit the present invention. All other embodiments, which can be obtained by those skilled in the art without any inventive step based on the embodiments of the present invention, should be included in the scope of the present invention.

Examples

As shown in fig. 1-5, the invention provides a junction box for an electric power supply device, which avoids the water accumulation of a wiring terminal, and comprises a box body 1, wherein a wiring door capable of being opened and closed is arranged on the box body 1, a wiring box 2 is fixed at the bottom of the box body 1, a wiring door capable of being opened and closed is arranged on the wiring box 2, a water outlet 11 is arranged at the bottom of the wiring box 2, a wiring board 4 is fixed in the box body 1, the wiring board 4 is provided with the wiring terminal 5, the wiring terminal 5 is provided with a fastener and a heating element, a lead 6 connected with the wiring terminal 5 penetrates through a lead hole at the bottom of the box body 1 and then enters the wiring box 2 and extends out of a lead outlet of the wiring box 2, and the lead outlet is provided with an adjustable sealing element;

still be equipped with fan 8, temperature sensor 10 and humidity transducer 9 in the box body 1, fan 8 is connected with the outside rotation motor 7 of box body 1, temperature sensor 10(TH150), humidity transducer 9(HS15P), rotation motor 7 and heating member all are connected with the PLC controller. The connection and control between the PLC controller and each sensor and the above components are common technical means in the field, which is the prior art and will not be described herein again.

The fastener includes threaded rod 15, the one end of threaded rod 15 is connected with terminal 5 after stretching into box body 1 interior through wiring board 4, threaded rod 15 passes through the bearing and is connected with terminal 5 rotation, and the other end of threaded rod 15 stretches out 1 outer and be connected with the knob of box body, threaded

rod

15 and 1 screw-thread fit of box body. Make threaded rod 15 drive terminal 5 axial displacement through rotating the knob, adapt to not being connected of the wire 6 of equidimension with terminal 15, terminal 15 cooperation wiring board 4 is fixed firm with wire 6 is tight, has avoided the not hard up of wiring, ensures that wire 6 and terminal 5 are reliably connected.

The heating element is an electric heating ring 14, the electric heating ring 14 is fixed on the back of the wiring board 4 corresponding to the wiring terminal 5, and a corresponding threaded rod 15 penetrates through the electric heating ring 14 and is in threaded fit with the electric heating ring 14. The setting of this department heats from the wiring board 4 back, and the heat passes through threaded rod 15 and wiring board 4 and transmits for terminal 5, has not only avoided directly heating terminal 5 and has influenced the normal work of wire 6, and the local heating has practiced thrift the energy, ensures the heating effect through the cooperation of heat-conduction and fan 8.

The sealing element comprises a shell 17 matched with the wire outlet, the shell 17 is cylindrical, one end of the shell 17 extends into the wire outlet, an annular groove 18 with an opening facing to the other end of the shell 17 is arranged on the shell 17 positioned in the wire outlet, a ring of elastic hoop ring 19 is fixed at the opening of the annular groove 18, the elastic hoop ring is a thicker and softer rubber ring, the other end of the shell 17 is provided with a rotating ring 13, the outer wall of the rotating ring 13 is provided with an external thread 16, the inner wall of the shell 17 corresponding to the rotating ring 13 is provided with an internal thread, the rotating ring 13 is in threaded fit with the shell 17, one end of the rotating ring 13 close to the elastic hoop 19 is rotatably connected with a limiting ring 20 through a bearing, the end part of the limiting ring 20 is provided with a guide pipe 21 matched with the annular groove 18, the inner wall of the limiting ring 20 behind the guide pipe 21 is matched with the outer wall of the elastic hoop 19, and the diameter of the inner wall of the limiting ring is gradually reduced. This department sets up and to arrange in order the fastening to the wire 6 that stretches out from the outlet, the diameter of the spacing ring inner wall at spacing ring 21 rear of spacing ring 20 reduces gradually, through rotating the swivel 13, make spacing ring 20 remove in shell 17, under the guide effect of guide tube 21 and ring channel 18, along with the guide tube 21 constantly stretches into in ring channel 18, the inner wall of spacing ring 20 constantly compresses elasticity hoop 19, make elasticity hoop 19 closely wrap up the extrusion seal with wire 6 and play, the realization is to the sealed effect of arrangement of wire 6, elasticity hoop 19 has avoided causing hard injury to wire 6 simultaneously.

The bottom of box body 1 is two inclined planes of symmetry, the inclined plane stretches into in the reason line box 2, and the least significant end on inclined plane is equipped with outlet 12, be equipped with two outlet in the reason line box 2, the outlet corresponds with the inclined plane. This department sets up the wiring of rational planning wire 6, makes wire 6 wiring more convenient, avoids the inlet wire, goes out the condition production that the line connects by mistake, and the hot-air and the steam of being convenient for in the box body 1 simultaneously discharge after entering into reason line box 2.

The box body 1 and the wire arranging box 2 are fixedly provided with mounting parts 3, and mounting holes are formed in the mounting parts 3, so that the mounting and the dismounting are convenient.

The installation is fixed with a plurality of Z type spacers 22 in the outlet port, Z type spacer 22 evenly distributed splits the delivery port into a plurality of water outlet channel, Z type spacer for with delivery port complex strip, the section of Z type spacer is the Z type, should set up and can effectively block outside humid air or steam and enter into reason line box 2, avoid endangering the interior equipment of junction box.

The inner wall of the wire hole is provided with an elastic sealing layer which is an elastic rubber layer, the elastic sealing layer can play a role in protecting, buffering and restraining the wire 6 passing through the wire hole, and the elastic sealing layer is in close contact with the wire 6 to avoid the entry of water vapor sundries.

And a switch valve (DN50) is arranged at the water outlet and is connected with the PLC.

When the sealing element is used, the rotating ring 13 of the sealing element is rotated reversely, the maximum diameter of the inner wall of the limiting ring 20 is matched with the elastic hoop 19, the inner space of the sealing element is maximized, a lead 6 can conveniently enter, the lead 6 extends into the sealing element at a wire outlet of the wire arranging box 2, the wire arranging door of the wire arranging box 2 and the wiring door of the box body 1 are opened, each lead 6 respectively penetrates through a lead hole and then enters the box body 1, the lead is connected to the corresponding wiring terminal 5, the wiring terminal 5 moves backwards by rotating the threaded rod 15 correspondingly connected with the wiring terminal 5, the lead 6 is ensured to be fully contacted with the wiring terminal 5 and fixed between the wiring terminal 5 and the wiring board 4, and the conduction of a circuit is prevented from being affected by loosening; after all wires 6 connect, close wiring door and reason line door, swivel 13 forward rotation drives spacing ring 20 and removes in the line of reason line box 2, and the removal in-process, in the stand pipe 21 constantly stretched into ring channel 18, and spacing ring 20 constantly moves forward, and the inner wall of spacing ring constantly extrudees elasticity hoop 19, makes elasticity hoop 19 live with the fixed seal that the wire is tight, and this department sets up and can seal up the fastening to the wire 6 of equidimension, quantity not, strong adaptability, and application scope is wide.

When the temperature in the box body 1 is too high, the temperature sensor 10 transmits a signal to the PLC, the PLC controls the rotation motor 7 to be started, so that the fan 8 starts to rotate, the water outlet 12 is opened, hot air in the box body 1 enters the wire arranging box 2 through the water outlet 12 and then is discharged from the water outlet 11, and the rotation motor 7 stops rotating after the temperature in the box body 1 is reduced to normal; when the humidity is too high in the box body 1, humidity sensor 9 transmission signal gives the PLC controller, PLC controller control electrical heating ring 14 heats and rotates motor 7 simultaneously and starts, make fan 8 begin to rotate, outlet 12 is opened, the heat after electrical heating ring 14 heats transmits for terminal 5 along with threaded rod 15, with the evaporation of water on the terminal 5, fan 8 rotates in with the even dispersion of heat to box body 1 simultaneously, make the evaporation of water in the box body 1 and follow outlet 12 and get into from outlet 11 discharges after arranging line box 2, the humidity drops to normal back in the box body 1, electrical heating ring 14 stops the heating, rotate motor 7 stall, outlet 12 is closed can.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an avoid terminal box for electric power supply unit of terminal ponding, includes the box body, be equipped with the wiring door that can open and shut on the box body, its characterized in that: a wire arranging box is fixed at the bottom of the box body, a wire arranging door capable of being opened and closed is arranged on the wire arranging box, a water outlet is arranged at the bottom of the wire arranging box, a wiring board is fixed in the box body, a wiring terminal is arranged on the wiring board, a fastener and a heating element are arranged on the wiring terminal, a lead connected with the wiring terminal penetrates through a lead hole at the bottom of the box body, enters the wire arranging box and extends out of a wire outlet of the wire arranging box, and an adjustable sealing element is arranged at the wire outlet;

2. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: the fastener includes the threaded rod, the one end of threaded rod is connected with the terminal after stretching into the box body and running through the wiring board, the threaded rod passes through the bearing and is connected with the terminal rotation, and the other end of threaded rod stretches out outside the box body and is connected with the knob, threaded rod and box body screw-thread fit.

3. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 2, characterized in that: the heating member is the electrical heating ring, the back that the terminal corresponds wiring board department is fixed to the electrical heating ring, and corresponding threaded rod passes and with electrical heating ring screw-thread fit in the electrical heating ring follow.

4. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: the sealing member includes the shell that matches with the outlet, the shell is cylindric, and the one end of shell stretches into the outlet, is located to be equipped with the opening on the intraoral shell of outlet towards the ring channel of the shell other end, the opening part of ring channel is fixed with round elasticity hoop, the other end of shell is equipped with the swivel becket, be equipped with the external screw thread on the outer wall of swivel becket, be equipped with the internal thread on the inner wall of the shell that the swivel becket corresponds, swivel becket and shell screw-thread fit, the one end that the swivel becket is close to elasticity hoop is passed through the bearing and is rotated and be connected with the spacing ring, the tip of spacing ring be equipped with ring channel assorted stand pipe, the inner wall of the spacing ring at stand pipe rear and the outer wall of elasticity hoop cooperate and the diameter of spacing ring inner wall progressively reduce.

5. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: the bottom of the box body is provided with two symmetrical inclined planes, the inclined planes extend into the wire arranging box, the lowest end of each inclined plane is provided with a water outlet, two wire outlets are arranged in the wire arranging box, and the wire outlets correspond to the inclined planes.

6. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: the box body and the wire arranging box are fixedly provided with mounting pieces, and mounting holes are formed in the mounting pieces.

7. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: a plurality of Z-shaped spacers are fixedly arranged in the water outlet, and the Z-shaped spacers are uniformly distributed to divide the water outlet into a plurality of water outlet channels.

8. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: and an elastic sealing layer is arranged on the inner wall of the wire hole.

9. A junction box for an electric power supply device for avoiding the water accumulation of the terminal block according to claim 1, characterized in that: and a switch valve is arranged at the water outlet and is connected with the PLC.