CN215772410U

CN215772410U - A explosion-proof junction box for hazardous area

Info

Publication number: CN215772410U
Application number: CN202121972080.9U
Authority: CN
Inventors: 卢伯高
Original assignee: Jiangxi Huize Explosion Proof Electrical Appliances Co ltd
Current assignee: Jiangxi Huize Explosion Proof Electrical Appliances Co ltd
Priority date: 2021-08-21
Filing date: 2021-08-21
Publication date: 2022-02-08
Anticipated expiration: 2031-08-21

Abstract

The utility model discloses an explosion-proof junction box for dangerous places, which comprises a box body, a box door and fixing plates, wherein an early warning mechanism is arranged on one side of the box door, the box body is installed on the outer side of the box door, the fixing structures are arranged on the periphery of the box body, the fixing plates are fixed on two sides of the box body, a flame-retardant structure is arranged on one side of each fixing plate, the early warning mechanism comprises a wind-sounding alarm, a protective shell, a temperature sensor and a single chip microcomputer, the wind-sounding alarm is installed at the bottom end of the box door, and the single chip microcomputer is arranged at the top end of the wind-sounding alarm. The temperature sensor detects the internal temperature of the device, and data is fed back to the single chip microcomputer, so that the single chip microcomputer controls the wind-sound alarm to operate, alarm sound is generated, and early warning is performed on workers, therefore, the high-temperature early warning function of the device is realized, the workers can find and process the internal temperature of the device, the circuit is prevented from being burnt due to the overhigh internal temperature of the device, and the safety of the device is improved.

Description

A explosion-proof junction box for hazardous area

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to an explosion-proof junction box for dangerous places.

Background

The explosion-proof junction box is power distribution equipment used in high-risk places, is mainly made of aluminum alloy and stainless steel, has the characteristics of high strength, good sealing property, excellent explosion-proof performance and the like, and is widely applied to various flammable and explosive places;

chinese patent is granted No. CN210779943U, and announcement day 2020, 06, 16 discloses an explosion-proof junction box, belongs to the junction box field, and explosion-proof junction box, including box and explosion-proof lid, explosion-proof lid is located the top of box, the top cover of box lateral surface is equipped with back the shape connecting plate, the medial surface of back the shape connecting plate and the lateral surface fixed connection of box. The explosion-proof cover can be arranged on the box body through the mutual matching of the square connecting plate, the slot and the inserting rod, the inserting rod inserted in the slot can be fixed and limited through the mutual matching of the mounting groove, the auxiliary limiting device and the limiting groove, and further the explosion-proof cover can be fixed and limited, so that the explosion-proof cover can be quickly arranged;

the above prior art solutions have the following drawbacks; among the above-mentioned technical scheme, the defect of being not convenient for carry out the temperature early warning when the device uses, the device is because inside high temperature when using, influences the use of the inside instrument of device, makes the device produce the potential safety hazard, leads to the security of device less than.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide an explosion-proof junction box for a dangerous place, which is used for solving the defect that the existing explosion-proof junction box for the dangerous place is inconvenient for temperature early warning.

(II) contents of utility model

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an explosion-proof junction box for hazardous location, includes box, chamber door and fixed plate, one side of chamber door is provided with early warning mechanism, the box is installed in the outside of chamber door, all be provided with fixed knot all around the box and construct, the both sides of box all are fixed with the fixed plate, one side of fixed plate is provided with fire-retardant structure, early warning mechanism includes wind song siren, protective housing, temperature sensor and singlechip, the bottom at the chamber door is installed to the wind song siren, the top of wind song siren is provided with the singlechip.

Preferably, the outside cover of singlechip is equipped with the protective housing, temperature sensor is installed on the top of protective housing.

Preferably, the wind sound alarm is installed at the bottom end of the box door through a bolt, and the output end of the single chip microcomputer is electrically connected with the temperature sensor and the input end of the single chip microcomputer through a wire.

Preferably, the fixing structure comprises a guide pipe, a threaded sleeve, a reed and a pressing block, the guide pipe is inserted in the box body, the reed is fixed on one side of the guide pipe, the threaded sleeve is sleeved on the outer side of the guide pipe, and the pressing block is fixed in the threaded sleeve.

Preferably, the inner wall of the threaded sleeve is provided with threads, the outer side of the conduit is provided with threads, and the conduit and the threaded sleeve are meshed through the threads to form a rotating structure.

Preferably, the flame-retardant structure comprises an asbestos board, wire netting and an expansion type fireproof coating, the asbestos board is fixed on the outer side of the box body, the wire netting is inserted into the asbestos board, and the expansion type fireproof coating is fixed at the top end of the asbestos board.

Preferably, the wire netting is provided with a plurality of groups in the inside of asbestos board, and a plurality of groups of wire netting are crisscross form distribution in the inside of asbestos board.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: this an explosion-proof junction box for hazardous area has not only realized high temperature early warning, has realized that the cable is fixed, has realized thermal-insulated fire-retardant moreover:

(1) the temperature sensor is used for detecting the internal temperature of the device, and data is fed back to the single chip microcomputer, so that the single chip microcomputer controls the wind-sound alarm to operate, alarm sound is generated, and workers are warned early, and therefore the high-temperature early warning function of the device is achieved, the workers can find and process the internal temperature of the device, the circuit is prevented from being burnt due to the fact that the internal temperature of the device is too high, and the safety of the device is improved;

(2) the cable is inserted into the conduit, the threaded sleeve moves along the outer wall of the conduit by rotating the threaded sleeve, so that the pressing block extrudes the reed, the reed moves to clamp the cable to fix the cable, and therefore the cable fixing function of the device is achieved, the cable is not easy to pull out of the device, and the cable is prevented from falling off under stress;

(3) the expanded fireproof coating delays heat transfer to prevent an object from igniting and burning, meanwhile, the asbestos plate secondarily blocks the temperature of flame, and the strength of the asbestos plate is increased through the wire mesh, so that the heat insulation and flame retardant functions of the device are realized, the storage time in the flame is prolonged, and the service life of the device is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a schematic top cross-sectional view of the present invention;

FIG. 3 is a schematic top view of the cross-sectional structure of the early warning mechanism of the present invention;

FIG. 4 is a schematic front sectional view of the fixing structure of the present invention;

fig. 5 is a schematic view of the front cross-sectional structure of the flame retardant structure of the present invention.

The reference numerals in the figures illustrate: 1. a box body; 2. a box door; 3. an early warning mechanism; 301. a wind chime alarm; 302. a protective shell; 303. a temperature sensor; 304. a single chip microcomputer; 4. a fixed structure; 401. a conduit; 402. a threaded sleeve; 403. a reed; 404. briquetting; 5. a fixing plate; 6. a flame retardant structure; 601. an asbestos sheet; 602. a wire mesh; 603. an intumescent fire-retardant coating.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, an embodiment of the present invention is shown: an explosion-proof junction box for hazardous places comprises a box body 1, a box door 2 and fixing plates 5, wherein an early warning mechanism 3 is arranged on one side of the box door 2, the box body 1 is installed on the outer side of the box door 2, the fixing structures 4 are arranged on the periphery of the box body 1, the fixing plates 5 are fixed on two sides of the box body 1, a flame-retardant structure 6 is arranged on one side of the fixing plates 5, the early warning mechanism 3 comprises a wind-sound alarm 301, a protective shell 302, a temperature sensor 303 and a single chip microcomputer 304, the wind-sound alarm 301 is installed at the bottom end of the box door 2, the type of the wind-sound alarm 301 can be SKW-1-24, the input end of the wind-sound alarm 301 is electrically connected with the output end of the single chip microcomputer 304 through a lead, the top end of the wind-sound alarm 301 is provided with the single chip microcomputer 304, the type of the single chip microcomputer 304 can be AD16-22SM, and the input end of the single chip microcomputer 304 is electrically connected with the output end of a power supply through a lead, a protective shell 302 is sleeved on the outer side of the single chip microcomputer 304, a temperature sensor 303 is installed at the top end of the protective shell 302, the type of the temperature sensor 303 can be PT100, the input end of the temperature sensor 303 is electrically connected with the output end of the single chip microcomputer 304 through a wire, the wind-sound alarm 301 is installed at the bottom end of the box door 2 through a bolt, the output end of the single chip microcomputer 304 is electrically connected with the input ends of the temperature sensor 303 and the temperature sensor 303 through wires, and therefore the temperature sensor 303 can transmit data to the single chip microcomputer 304 conveniently;

specifically, as shown in fig. 1, 2 and 3, when the wind-sound alarm device is used, the temperature sensor 303 detects the temperature inside the device, timely feeds temperature data back to the single chip microcomputer 304, and processes the data through the single chip microcomputer 304, so that the single chip microcomputer 304 controls the wind-sound alarm 301 to operate, generate an alarm sound and give an early warning to workers;

the fixed structure 4 comprises a guide pipe 401, a threaded sleeve 402, a reed 403 and a pressing block 404, the guide pipe 401 is inserted in the box body 1, the reed 403 is fixed on one side of the guide pipe 401, the threaded sleeve 402 is sleeved on the outer side of the guide pipe 401, the pressing block 404 is fixed in the threaded sleeve 402, a thread is formed on the inner wall of the threaded sleeve 402, a thread is formed on the outer side of the guide pipe 401, the guide pipe 401 and the threaded sleeve 402 are meshed through the thread to form a rotating structure, and the threaded sleeve 402 can move horizontally through the meshing of the thread;

specifically, as shown in fig. 1, 2 and 4, in use, a cable is inserted into the conduit 401 to connect the cable into the device, the screw 402 is rotated to move the screw 402 along the outer wall of the conduit 401 through the engagement of threads, the screw 402 drives the pressing block 404 to move to press the pressing block 404 against the spring plate 403, the spring plate 403 is pressed by the pressing block 404 to be bent, the spring plate 403 moves inwards to clamp the cable, and the cable is fixed and is not easy to be pulled out of the device;

the flame-retardant structure 6 comprises an asbestos board 601, an iron wire 602 and an intumescent fireproof coating 603, the asbestos board 601 is fixed on the outer side of the box body 1, the iron wire 602 is inserted into the asbestos board 601, the intumescent fireproof coating 603 is fixed at the top end of the asbestos board 601, a plurality of groups of the iron wire 602 are arranged inside the asbestos board 601, the iron wire 602 in the groups are distributed inside the asbestos board 601 in a staggered manner, and the iron wire 602 in the groups are distributed inside the asbestos board 601 in a staggered manner, so that the force applied to the asbestos board 601 is conveniently transmitted, and the strength of the asbestos board 601 is improved;

specifically, as shown in fig. 1, 2 and 5, when the device is used, the expansion type fireproof coating 603 expands due to heat to form a carbon foam heat insulation layer, so that heat transfer is delayed, an object is prevented from being ignited and burnt, the temperature of flame is secondarily blocked by the asbestos plate 601, heat transfer from the outside to the inside of the device is reduced, the strength of the asbestos plate 601 is increased by the wire netting 602, and the asbestos plate 601 is prevented from being broken when being exploded.

The working principle is as follows: when the device is used, the device is externally connected with a power supply, firstly, the device is placed in a use area, a screw is inserted into the fixing plate 5 to fix the device on a wall surface, a cable is inserted into the guide pipe 401 to lead the cable into the device for wiring, the screw sleeve 402 is rotated to enable the screw sleeve 402 to move along the outer wall of the guide pipe 401 through threaded engagement, meanwhile, the screw sleeve 402 drives the pressing block 404 to move to enable the pressing block 404 to press the spring piece 403, the spring piece 403 is pressed by the pressing block 404 to be bent, the spring piece 403 moves inwards to clamp the cable, the cable is fixed, the cable is not easy to be stressed to be drawn out of the device, and the fixation of the cable is completed;

secondly, when the temperature inside the device is too high, the temperature inside the device is detected through the temperature sensor 303, temperature data are fed back to the single chip microcomputer 304 in time, the data are processed through the single chip microcomputer 304, the single chip microcomputer 304 controls the wind-sound alarm 301 to operate, an alarm sound is generated, workers are warned, and early warning on the device is completed;

finally, when the device is invaded by flame, the expansion type fireproof coating 603 expands due to heating to form a carbon foam heat insulation layer to delay heat transfer, meanwhile, objects are prevented from being ignited and burnt, the temperature of the flame is secondarily blocked through the asbestos plate 601, the heat transfer from the outside to the inside of the device is reduced, the strength of the asbestos plate 601 is increased through the wire netting 602, the asbestos plate 601 is prevented from being broken when being exploded, the flame retardance and heat insulation of the device are completed, and the use work of the explosion-proof junction box for dangerous places is finally completed.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an explosion-proof junction box for hazardous area, includes box (1), chamber door (2) and fixed plate (5), its characterized in that: an early warning mechanism (3) is arranged on one side of the box door (2), and a box body (1) is arranged on the outer side of the box door (2);

the periphery of the box body (1) is provided with a fixed structure (4), and two sides of the box body (1) are fixed with fixed plates (5);

one side of fixed plate (5) is provided with fire-retardant structure (6), early warning mechanism (3) are including wind sound siren (301), protective housing (302), temperature sensor (303) and singlechip (304), the bottom at chamber door (2) is installed to wind sound siren (301), the top of wind sound siren (301) is provided with singlechip (304).

2. An explosion-proof junction box for hazardous locations according to claim 1, characterized in that: the outside cover of singlechip (304) is equipped with protective housing (302), temperature sensor (303) are installed on the top of protective housing (302).

3. An explosion-proof junction box for hazardous locations according to claim 2, characterized in that: the wind sound alarm (301) is installed at the bottom end of the box door (2) through a bolt, and the output end of the single chip microcomputer (304) is electrically connected with the input ends of the temperature sensor (303) and the temperature sensor through a wire.

4. An explosion-proof junction box for hazardous locations according to claim 1, characterized in that: the fixing structure (4) comprises a guide pipe (401), a threaded sleeve (402), a reed (403) and a pressing block (404), the guide pipe (401) is inserted into the box body (1), the reed (403) is fixed on one side of the guide pipe (401), the threaded sleeve (402) is sleeved on the outer side of the guide pipe (401), and the pressing block (404) is fixed inside the threaded sleeve (402).

5. An explosion-proof junction box for hazardous locations of claim 4, wherein: the inner wall of the threaded sleeve (402) is provided with threads, the outer side of the conduit (401) is provided with threads, and the conduit (401) and the threaded sleeve (402) form a rotating structure through the meshing of the threads.

6. An explosion-proof junction box for hazardous locations according to claim 1, characterized in that: the flame-retardant structure (6) comprises an asbestos board (601), an iron wire net (602) and an expansion type fireproof coating (603), wherein the asbestos board (601) is fixed on the outer side of the box body (1), the iron wire net (602) is inserted into the asbestos board (601), and the expansion type fireproof coating (603) is fixed at the top end of the asbestos board (601).

7. An explosion-proof junction box for hazardous locations of claim 6, wherein: wire netting (602) are provided with a plurality of groups in asbestos board (601) inside, and a plurality of groups wire netting (602) are crisscross form and distribute in asbestos board (601) inside.