CN209948651U

CN209948651U - Low-voltage cable branch box

Info

Publication number: CN209948651U
Application number: CN201921199760.4U
Authority: CN
Inventors: 高叶靖; 林江秋; 邓伦猛
Original assignee: Jiangxi Nankai Electric Complete Set Co Ltd
Current assignee: Jiangxi Nankai Electric Complete Set Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-01-14
Anticipated expiration: 2029-07-29

Abstract

The utility model discloses a low tension cable feeder pillar, the power distribution box comprises a box body, rain-proof top cap and chamber door, the top of box is provided with the heat dissipation fan, the inside female row of 4 equidistance intervals that vertically is equipped with of box, the female interval department of arranging of low pressure is equipped with and is used for along vertically arranging the female horizontal insulation baffle that singly insulates and shield of every low pressure, horizontal insulation baffle passes through the insulation baffle base to be fixed on the box inner wall, be equipped with horizontal baffle slot on the insulation baffle base, horizontal insulation baffle outer end is equipped with perpendicular baffle slot, fixed perpendicular insulation baffle on two adjacent horizontal insulation baffle's the perpendicular baffle slot, the bottom half has the inlet port, bottom half fixedly connected with is a plurality of condensation units once. The utility model discloses a low tension cable feeder pillar can change the inside and outside air flow circulation of box, solves feeder pillar condensation basically and drips the problem under condensation, can also effectively control the humiture in the box, in time detects the electric leakage condition of feeder pillar, has alarming function.

Description

Low-voltage cable branch box

Technical Field

The invention relates to the technical field of power equipment, in particular to a low-voltage cable branch box.

Background

The low-voltage cable branch box is a matching device for urban network cable transformation, is widely used in three-phase low-voltage power transmission and distribution systems of outdoor public places such as transformer and distribution stations, public and mining enterprises, two sides of streets, garden residential districts, high-rise buildings, airports, key construction transformation projects and the like, and is used as a complete set of shaping equipment for distributing electric energy to other users or equipment by using cables.

The existing low-voltage cable branch box is easy to cause electric leakage phenomenon once the grounding is not good, the shell is damaged, an electric appliance is affected with damp, the temperature in the box is too high to cause line aging and the like, and further accidents such as fire disasters, human body electric shock and the like are caused. And because the leakproofness of feeder pillar is strong, steam can't disperse outside the box, leads to the feeder pillar inside condensation serious, and low voltage cable feeder pillar trouble frequently takes place, seriously influences low voltage line operating stability and distribution board district trouble evaluation index.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide one kind and can change the inside and outside air flow circulation of box to having drying function, solving feeder pillar condensation basically and the problem that drips under the condensation, humiture in can also the effective control box in, in time detecting the electric leakage condition of feeder pillar, having alarming function's low tension cable feeder pillar.

The utility model aims at overcoming the defects of the prior art and providing a low-voltage cable branch box. The bottom structure of the box body is improved, so that the flowing circulation of air inside and outside the box body is changed, the drying function is realized, and the problems of condensation and dripping of condensation of the branch box are basically solved.

In order to achieve the above object, the utility model provides a following technical scheme: a low-voltage cable branch box comprises a box body, a rainproof top cover and a box door, wherein supporting legs are arranged at the bottom of the box body, the box body is fixedly connected with the top cover through a supporting plate, the top of the box body is provided with a heat radiation fan, a protective cover is arranged on the outer side of the heat dissipation fan, 4 low-voltage busbars which are spaced at equal intervals are longitudinally arranged in the box body, horizontal insulating clapboards used for insulating and shielding each low-voltage bus bar independently along the longitudinal direction are arranged at the intervals of the low-voltage bus bars, the horizontal insulating partition board is fixed on the inner wall of the box body through an insulating partition board base, a horizontal partition board slot for inserting the horizontal insulating partition board is arranged on the insulating partition board base, the outer end of each horizontal insulating partition board is provided with a vertical partition board slot, the vertical insulating partition boards are fixed on the vertical partition board slots of two adjacent horizontal insulating partition boards, the bottom of the box body is provided with an air inlet, and the bottom of the box body is fixedly connected with a plurality of primary condensation units.

Furthermore, the primary condensation unit comprises an intermediate plate, one end of the intermediate plate is fixedly connected with the bottom of the box body, the other end of the intermediate plate is hermetically connected with a V-shaped condensation groove, and the V-shaped condensation groove is formed by hermetically connecting a wide condensation plate and a narrow condensation plate.

Furthermore, in two adjacent V-shaped condensation grooves, the wide condensation plate on one V-shaped condensation groove covers part of the narrow condensation plate on the other V-shaped condensation groove.

Furthermore, a secondary condensation plate is connected in the box body in a sealing mode, and the secondary condensation plate is obliquely arranged in the box body.

Furthermore, the secondary condensation plate is provided with a clamping groove, a clamping frame is clamped in the clamping groove, drying agents are filled in the clamping frame, and an opening matched with the clamping frame is formed in the box body.

Preferably, a ventilation channel is arranged on the side wall of the box body, an air filter screen is arranged on the ventilation channel, and the air filter screen comprises a HEPA filter screen layer and an electrostatic adsorption filter screen layer.

Preferably, be equipped with the temperature and humidity sensor who is used for monitoring the inside humiture of box on the box top inner wall, be equipped with controller and a plurality of voltage detection module on the box lateral part inner wall, the top cap top is equipped with audible-visual annunciator.

Preferably, the controller is respectively and electrically connected with the temperature and humidity sensor, the voltage detection module, the audible and visual alarm and the heat dissipation fan.

Preferably, the box body is connected with the box door through a spring hinge, and an electromagnetic lock is arranged on the box door.

The utility model has the advantages that: (1) air enters from the bottom of the box body, after twice condensation of the primary condensation unit and the secondary condensation plate, the water content of the dried air is low, and the safety of electric equipment in the box body is improved;

(2) the utility model discloses an insulating barrier base, horizontal insulating barrier and vertical insulating barrier separate the low-voltage bus bar alone, and horizontal insulating barrier and vertical insulating barrier are convenient for install and dismantle, and when the staff performed the electrified work of cutting off and making a fire of new cable, the staff can effectively insulate and shield other electrified looks low-voltage bus bars, provides reliable and safe live working space for other way low-voltage cable work, effectively prevents its interphase short circuit;

(3) be equipped with the temperature and humidity sensor who is used for monitoring the inside humiture of box on the inner wall of box top, be equipped with controller and a plurality of voltage detection module on the box lateral part inner wall, the top cap top is equipped with audible-visual annunciator, temperature and humidity sensor, voltage detection module, audible-visual annunciator and heat dissipation fan respectively with controller electric connection, can realize real time monitoring and tissue maintenance, improve work efficiency, guarantee power supply system's safe and reliable operation.

Drawings

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

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of the bottom of the case body of the present invention;

fig. 4 is an assembly schematic view of the secondary condensation plate of the present invention;

fig. 5 is a schematic structural view of the card frame of the present invention;

in the figure, 1-box; 2-a top cover; 3-a box door; 4-a temperature and humidity sensor; 5-a heat dissipation fan; 6-protective cover; 7-audible and visual alarm; 8-horizontal insulating spacer; 81-vertical partition slot; 9-low voltage bus bar; 10-vertical insulating spacers; 11-a voltage detection module; 12-a ventilation channel; 13-air filter net; 14-secondary condensation plate; 15-a handle; 16-a controller; 17-an electromagnetic lock; 18-an air intake; 19-primary condensation unit; 191-a middle plate; 192-wide condensation sheet; 193-narrow condensation plate; 20-a leg; 21-a support plate; 22-a card slot; 23-a card frame; 24-a desiccant; 25-an insulating spacer mount; 251-horizontal spacer slots.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-5, a low-voltage cable branch box comprises a box body 1, a rain-proof top cover 2 and a box door 3, wherein the bottom of the box body 1 is provided with a supporting leg 20, the box body 1 and the top cover 2 are fixedly connected through a supporting plate 21, the top of the box body 1 is provided with a heat dissipation fan 5, the outer side of the heat dissipation fan 5 is provided with a protective cover 6, 4 equally spaced low-voltage busbars 9 are longitudinally arranged inside the box body 1, a horizontal insulating partition plate 8 for individually insulating and shielding each low-voltage busbar 9 along the longitudinal direction is arranged at the interval of the low-voltage busbars 9, the horizontal insulating partition plate 8 is fixed on the inner wall of the box body 1 through an insulating partition plate base 25, the insulating partition plate base 25 is provided with a horizontal partition plate slot 251 for inserting the horizontal insulating partition plate 8, the outer end of the horizontal insulating partition plate 8 is provided with a vertical partition plate slot 81, the horizontal insulating partition plate 8 and the vertical insulating partition plate 10 are epoxy resin insulating partition plates, an air inlet 18 is formed in the bottom of the box body 1, and a plurality of primary condensation units 19 are fixedly connected to the bottom of the box body 1.

Further, the primary condensation unit 19 comprises a middle plate 191, one end of the middle plate 191 is fixedly connected with the bottom of the box body 1, the other end of the middle plate 191 is hermetically connected with a V-shaped condensation groove, the V-shaped condensation groove is formed by hermetically connecting a wide condensation plate 192 and a narrow condensation plate 193, and the wide condensation plate 192 on one V-shaped condensation groove covers a part of the narrow condensation plate 193 on the other V-shaped condensation groove in two adjacent V-shaped condensation grooves.

Further, a secondary condensation plate 14 is hermetically connected in the box body 1, the secondary condensation plate 14 is obliquely installed in the box body 1, the secondary condensation plate 14 is provided with a clamping groove 22, a clamping frame 23 is clamped in the clamping groove 22, a drying agent 24 is filled on the clamping frame 23, the clamping frame 23 is fixedly connected with the handle 15, the drying agent 24 is convenient to replace, and an opening matched with the clamping frame 23 is formed in the box body 1.

Further, a ventilation channel 12 is arranged on the side wall of the box body 1, an air filter screen 13 is arranged on the ventilation channel 12, and the air filter screen 13 comprises a HEPA filter screen layer and an electrostatic adsorption filter screen layer.

Further, be equipped with temperature and humidity sensor 4 that is used for monitoring the inside humiture of box 1 on the inner wall of box 1 top, be equipped with controller 16 and a plurality of voltage detection module 11 on the inner wall of box 1 lateral part, 2 tops of top cap are equipped with audible-visual annunciator 7, controller 16 respectively with temperature and humidity sensor 4, voltage detection module 11, audible-visual annunciator 7 and 5 electric connection of heat dissipation fan, voltage detection module 11 adopts hall sensor. .

Preferably, the box body 1 and the box door 3 are connected through a spring hinge, and an electromagnetic lock 17 is arranged on the box door 3.

The working principle is as follows: when the branch box is in an operating state, the temperature inside the box body 1 is high, the temperature outside the box body 1 is low, the pressure inside the box body 1 is low, outside air enters from the bottom of the box body 1 and flows upwards, and after contacting with the narrow condensation plate 193, the outside air is gradually condensed into water drops which drop, when the water drops are formed on the wide condensation plate 192, the water drops can drop on the narrow condensation plate 193 below, the water drops flow and slide to the outer side of the box body 1 along a flow channel formed by the narrow condensation plate 193 and the wide condensation plate 192, and pass through the atmosphere of primary condensation, still have certain moisture, and can rise along the secondary condensation plate 14, the secondary condensation plate 14 is obliquely arranged, so that the air can carry out secondary condensation, the water drops drop out from the air inlet 18, a part of the air finally enters the box body 1 after being dried by the drying agent 24, and are influenced by the high temperature in the box body 1 to become high-temperature drying air, and the high-temperature drying air rises, when the water enters the water-containing atmosphere from the air exchange channel 12, the water and the air are mixed, so that the unit water content of the water-containing atmosphere is reduced, and the safety of electric equipment in the box body 1 is improved; the insulating partition plate base 25, the horizontal insulating partition plate 8 and the vertical insulating partition plate 10 separate the low-voltage bus bar 9 independently, the horizontal insulating partition plate 8 and the vertical insulating partition plate 10 are convenient to mount and dismount, and when a worker conducts live-line hot-line cutting and fire-connecting work of a new cable, the live-line low-voltage bus bar 9 of other phases can be effectively shielded in an insulating mode, reliable and safe live-line working space is provided for work of low-voltage cables of other paths, and interphase short circuit of the low-voltage cables is effectively prevented; be equipped with the temperature and humidity sensor 4 that is used for monitoring the inside humiture of box on the inner wall of box 1 top, be equipped with controller 16 and a plurality of voltage detection module 11 on the inner wall of box 1 lateral part, 2 tops of top cap are equipped with audible-visual annunciator 7, temperature and humidity sensor 4, voltage detection module 11, audible-visual annunciator 7 and heat dissipation fan 5 respectively with 16 electric connection of controller, can realize real time monitoring and organize the maintenance, improve work efficiency, guarantee power supply system's safe and reliable operation.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a low tension cable feeder pillar, includes box (1), rain-proof top cap (2) and chamber door (3), box (1) bottom is equipped with landing leg (20), its characterized in that: the box body (1) is fixedly connected with the top cover (2) through a supporting plate (21), a heat dissipation fan (5) is arranged at the top of the box body (1), a protective cover (6) is arranged on the outer side of the heat dissipation fan (5), at least 3 equally spaced low-voltage busbars (9) are vertically arranged in the box body (1), horizontal insulating partition plates (8) used for separately insulating and shielding each low-voltage busbar (9) along the vertical direction are arranged at intervals of the low-voltage busbars (9), the horizontal insulating partition plates (8) are fixed on the inner wall of the box body (1) through insulating partition plate bases (25), horizontal partition plate slots (251) used for inserting the horizontal insulating partition plates (8) are formed in the insulating partition plate bases (25), vertical partition plate slots (81) are formed in the outer ends of the horizontal insulating partition plates (8), vertical insulating partition plates (10) are fixed on the vertical partition plate slots (81) of the horizontal insulating partition plates (8), the bottom of the box body (1) is provided with an air inlet (18), and the bottom of the box body (1) is fixedly connected with a plurality of primary condensation units (19).

2. A low voltage cable breakout box according to claim 1, wherein: the primary condensation unit (19) comprises a middle plate (191) with one end fixedly connected with the bottom of the box body (1), the other end of the middle plate (191) is hermetically connected with a V-shaped condensation groove, and the V-shaped condensation groove is formed by hermetically connecting a wide condensation plate (192) and a narrow condensation plate (193).

3. A low voltage cable breakout box according to claim 2, wherein: and in two adjacent V-shaped condensation grooves, the wide condensation plate (192) on one V-shaped condensation groove covers a part of the narrow condensation plate (193) on the other V-shaped condensation groove.

4. A low voltage cable breakout box according to claim 3, wherein: the box body (1) is internally and hermetically connected with a secondary condensation plate (14), and the secondary condensation plate (14) is obliquely arranged in the box body (1).

5. A low-voltage cable branch box according to claim 4, characterized in that: the secondary condensation plate (14) is provided with a clamping groove (22), a clamping frame (23) is clamped in the clamping groove (22), a drying agent (24) is filled on the clamping frame (23), and an opening matched with the clamping frame (23) is formed in the box body (1).

6. A low voltage cable breakout box according to claim 1, wherein: the air-exchange box is characterized in that an air-exchange channel (12) is arranged on the side wall of the box body (1), an air filter screen (13) is arranged on the air-exchange channel (12), and the air filter screen (13) comprises a HEPA filter screen layer and an electrostatic adsorption filter screen layer.

7. A low-voltage cable branch box according to claim 6, characterized in that: be equipped with temperature and humidity sensor (4) that are used for monitoring the inside humiture of box (1) on the inner wall of box (1) top, be equipped with controller (16) and a plurality of voltage detection module (11) on box (1) lateral part inner wall, top cap (2) top is equipped with audible-visual annunciator (7).

8. A low voltage cable breakout box according to claim 7, wherein: the controller (16) is respectively electrically connected with the temperature and humidity sensor (4), the voltage detection module (11), the audible and visual alarm (7) and the heat dissipation fan (5).

9. A low voltage cable breakout box according to claim 1, wherein: the box body (1) is connected with the box door (3) through a spring hinge, and an electromagnetic lock (17) is arranged on the box door (3).