Simple explosion-proof junction box

Abstract

A simple explosion-proof junction box relates to the technical field of power supply explosion-proof, and comprises a box body, the middle part of the box body is provided with a mounting plate, the mounting plate divides the interior of the box body into a front chamber and a rear chamber which are mutually independent, the front end of the front chamber is provided with a box door, the rear end of the rear chamber is provided with a plurality of outer explosion-proof threading connectors, and the outer explosion-proof threading connectors are connected with the box door. An explosion-proof socket connected with the corresponding outer explosion-proof threading connector is arranged on the front end face of the mounting plate, a control switch is further arranged on the front end face of the mounting plate, a sealing cover is installed at the position, corresponding to the control switch, of the rear end face of the mounting plate, and an inner explosion-proof threading connector is arranged on the rear end face of the sealing cover. And the control switch is connected with the explosion-proof socket through the inner explosion-proof threading connector so as to control the on-off of a circuit of the explosion-proof socket. According to the utility model, the structure of the explosion-proof junction box is optimized on the basis of solving the explosion-proof problem of the power junction box, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof power supply, in particular to a simple explosion-proof junction box. Background Art

[0002] The power connection box of the existing shelter is installed on the bulkhead profile, with a wall box door installed on the outside. It is usually closed. When working, the wall box door can be opened to connect to the external power supply. The inner box of the power connection box is installed on the inner wall of the cabin, and all the devices are installed in the panel and the inner box. Since the power connection box is integrated with the cabin body, it does not have an explosion-proof function. Especially when the connection box is installed on the oil tanker, static sparks are easily generated when connecting cables, which poses a great danger.

[0003] At present, all cables in the common explosion-proof junction box are connected through explosion-proof connectors, and the devices on the operation panel also use explosion-proof switches to achieve explosion-proof effect. However, this type of explosion-proof junction box requires the box body and operation panel to be made of steel plates with a thickness of more than 3mm to fully adapt to various explosion-proof devices, which makes the entire explosion-proof box bulky and costly. Utility Model Content

[0004] The utility model aims to provide a simple explosion-proof junction box to reduce costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a simple explosion-proof junction box, comprising a box body, a mounting plate is arranged in the middle of the box body, the mounting plate divides the interior of the box body into a front chamber and a rear chamber which are independent of each other, a box door is arranged at the front end of the front chamber, a plurality of external explosion-proof threading connectors are arranged at the rear end of the rear chamber, an explosion-proof socket connected to the corresponding external explosion-proof threading connector is arranged on the front end surface of the mounting plate, a control switch is also arranged on the front end surface of the mounting plate, a sealing cover is installed on the rear end surface of the mounting plate at a position corresponding to the control switch, an internal explosion-proof threading connector is arranged on the rear end surface of the sealing cover, the control switch is connected to the explosion-proof socket through the internal explosion-proof threading connector to control the on-off of the circuit of the explosion-proof socket.

[0006] Preferably, the explosion-proof socket includes an explosion-proof input socket and an explosion-proof output socket; the control switch includes an input control switch and an output control switch respectively connected to the explosion-proof input socket and the explosion-proof output socket.

[0007] More preferably, the external explosion-proof threading connector and the internal explosion-proof threading connector are both stainless steel cable threading connectors.

[0008] More preferably, the control switch is located above the explosion-proof socket.

[0009] More preferably, the box body, box door, mounting plate and sealing cover are all made of 1.5 mm thick steel plate.

[0010] Compared with the prior art, the utility model can play a protective role by installing a sealing cover on the rear end surface of the mounting plate at a position corresponding to the control switch, thereby achieving a completely sealed and shielded effect on the openings such as the control switch on the operating panel relative to the interior of the box, thereby preventing flammable and explosive gases from entering the rear chamber. Therefore, there is no need to deliberately set up explosion-proof control switches and other devices, so that the entire explosion-proof junction box does not need to be made of too thick steel plates, saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of the A-direction perspective.

[0013] In the figure:

[0014] 1——Box 2——Mounting plate 3——Front chamber

[0015] 4——Rear chamber 5——Door 6——External explosion-proof threading connector

[0016] 7——Sealing cover 8——Internal explosion-proof threading connector 9——Explosion-proof input socket

[0017] 10——Explosion-proof output socket 11——Input control switch

[0018] 12——Output control switch. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0020] It should be noted in advance that, in the present utility model, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, in the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature can include the first and second features directly contacting, and can also include the first and second features not being in direct contact but contacting through another feature between them.

[0021] like Figure 1 to Figure 2As shown, a simple explosion-proof junction box comprises a box body 1, a mounting plate 2 is arranged in the middle of the box body 1, the mounting plate 2 divides the interior of the box body 1 into a front chamber 3 and a rear chamber 4 which are independent of each other, a box door 5 is arranged at the front end of the front chamber 3, a plurality of external explosion-proof threading connectors 6 are arranged at the rear end of the rear chamber 4, the external explosion-proof threading connectors 6 are used to be electrically connected to the internal equipment of the carriage, an explosion-proof socket connected to the corresponding external explosion-proof threading connector 6 is arranged on the front end surface of the mounting plate 2, a control switch is also arranged on the front end surface of the mounting plate 2, a sealing cover 7 is installed on the rear end surface of the mounting plate 2 at a position corresponding to the control switch, an internal explosion-proof threading connector 8 is arranged on the rear end surface of the sealing cover 7, and the control switch is connected to the explosion-proof socket through the internal explosion-proof threading connector 8 to control the circuit on and off of the explosion-proof socket.

[0022] It should be noted that those skilled in the art should know that the principle of controlling the on-off circuit of an explosion-proof socket by a control switch is a conventional technical means, and reference can be made to the common principle of a circuit breaker switch. When the control switch is in a closed state, the circuit is closed and current can flow through the explosion-proof socket. When the switch is in an open state, the circuit is disconnected and current cannot flow through the socket.

[0023] In the above structure, the explosion-proof socket includes an explosion-proof input socket 9 and an explosion-proof output socket 10; the control switch includes an input control switch 11 and an output control switch 12 respectively connected to the explosion-proof input socket 9 and the explosion-proof output socket 10. Among them, the external explosion-proof threading connector 6 and the internal explosion-proof threading connector 8 are both stainless steel cable threading connectors.

[0024] Those skilled in the art should know that the stainless steel cable threading connector is an existing technology for achieving explosion-proof effect. Similarly, the same is true for explosion-proof sockets. Specifically, the role of the explosion-proof socket and explosion-proof threading connector in this embodiment is to ensure the safe use of electrical equipment in an explosive gas environment. They can prevent sparks, high temperatures and explosions from propagating in an explosive gas environment by adopting special designs and materials, as well as safety switch mechanisms, to ensure the safe use of electrical equipment. Since such connectors and sockets can be directly purchased, this application does not improve such structures themselves, so they are not described in detail.

[0025] Preferably, the control switch is located above the explosion-proof socket. The box body 1, the box door 5, the mounting plate 2 and the sealing cover 7 are all made of 1.5 mm thick steel plates, making the overall structure simple and more lightweight.

[0026] When the simple explosion-proof junction box provided by the above embodiment is used, first open the box door 5, and the input control switch 11 and the output control switch 12 are both in the closed state. At this time, the explosion-proof input socket 9 and the explosion-proof output socket 10 are not powered on, and the operation of the external power supply or equipment can be performed. After the connection is completed, the corresponding input control switch 11 or output control switch 12 can be turned on to achieve power on, and before unplugging the plug, the corresponding circuit can be closed by the corresponding control switch before separation. It can be seen that this structure ensures that the connector is prohibited from being powered on before plugging, and the power is turned off and then separated when separating, which prevents the generation of static electricity and electric sparks and improves the reliability of the explosion-proof junction box. By installing the sealing cover 7 at the position corresponding to the control switch on the rear end surface of the mounting plate 2, a protective effect can be played, and the openings of the control switch and the like on the operating panel can be completely sealed and shielded relative to the inside of the box body 1, thereby preventing flammable and explosive gases from entering the rear chamber, so there is no need to deliberately set explosion-proof control switches and other devices, so that the entire explosion-proof junction box does not need to be made of too thick steel plates, saving manufacturing costs.

[0027] In order to make it easier for ordinary technicians in this field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and the above-mentioned embodiments are better implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A simple explosion-proof junction box, comprising a box body (1), characterized in that: A mounting plate (2) is provided in the middle of the box body (1), and the mounting plate (2) divides the interior of the box body (1) into a front chamber (3) and a rear chamber (4) which are independent of each other. A box door (5) is installed at the front end of the front chamber (3), and a plurality of external explosion-proof threading connectors (6) are installed at the rear end of the rear chamber (4). An explosion-proof socket connected to the corresponding external explosion-proof threading connector (6) is provided on the front end surface of the mounting plate (2), and a control switch is also provided on the front end surface of the mounting plate (2). A sealing cover (7) is installed at a position corresponding to the control switch on the rear end surface of the mounting plate (2), and an internal explosion-proof threading connector (8) is provided on the rear end surface of the sealing cover (7). The control switch is connected to the explosion-proof socket through the internal explosion-proof threading connector (8) to control the on-off of the circuit of the explosion-proof socket.

2. The simple explosion-proof junction box according to claim 1, characterized in that: The explosion-proof socket comprises an explosion-proof input socket (9) and an explosion-proof output socket (10); the control switch comprises an input control switch (11) and an output control switch (12) respectively connected to the explosion-proof input socket (9) and the explosion-proof output socket (10).

3. The simple explosion-proof junction box according to claim 1 is characterized in that: The external explosion-proof threading connector (6) and the internal explosion-proof threading connector (8) are both stainless steel cable threading connectors.

4. The simple explosion-proof junction box according to claim 1, characterized in that: The control switch is located above the explosion-proof socket.

5. The simple explosion-proof junction box according to any one of claims 1 to 4, characterized in that: The box body (1), the box door (5), the mounting plate (2) and the sealing cover (7) are all made of steel plates with a thickness of 1.5 mm.

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