Explosion-proof shell and explosion-proof optical communication device adopting same

Abstract

The utility model discloses an explosion-proof housing and an explosion-proof optical communication device employing the same, the explosion-proof housing comprises an aluminum housing and an aluminum cover body, the aluminum cover body is in threaded connection with the aluminum housing, the aluminum cover body seals a top opening of the aluminum housing, the aluminum housing is provided with a cable introducing device, and the cable introducing device is provided with a cable receiving device. The aluminum cover body is provided with an optical signal introduction device, the inner side of the aluminum shell is provided with an inner sealing structure tightly attached to the bottom face of the aluminum cover body, and the outer side of the aluminum cover body is provided with an outer sealing structure tightly attached to the top face of the aluminum shell. According to the explosion-proof optical communication device, an optical communication device, a switch and a fixing frame for fixing the optical communication device and the switch are installed in a shell, the optical communication device receives or emits optical signals through an optical signal introduction device and is further in communication connection with the switch, and an aluminum cover body and an aluminum shell body are in threaded connection to form a sealing structure. Gaps can be reduced, and heat leakage of the electrical equipment is prevented.

Description

Technical Field

[0001] The utility model relates to a shell and an optical communication device using the shell, in particular to an explosion-proof shell and an explosion-proof optical communication device using the shell. Background Art

[0002] When using electrical equipment in explosive environments such as explosive gas environments, electrical equipment will generate heat and become electrically charged during operation. Long-term use of electrical equipment will generate a large amount of heat, leading to safety accidents in explosive gas environments or electrical equipment generating electromagnetic waves, which may ignite flammable gases under the action of electromagnetic waves, especially in public places such as gas stations, unless the heat generated by the electrical equipment is removed in time or the electromagnetic waves generated by the electrical equipment are shielded. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one object of the utility model is to provide an explosion-proof housing that can reduce electromagnetic radiation and quickly dissipate heat.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An explosion-proof housing includes an aluminum shell and an aluminum cover body, the bottom of the aluminum cover body extends into the inner side of the aluminum shell body and is threadedly connected thereto, the aluminum cover body closes the top opening of the aluminum shell body to form a closed space, the aluminum shell body is provided with a cable introduction device, the aluminum cover body is provided with an optical signal introduction device, the inner side of the aluminum shell body is provided with an inner sealing structure that is tightly attached to the bottom surface of the aluminum cover body, and the outer side of the aluminum cover body is provided with an outer sealing structure that is tightly attached to the top surface of the aluminum shell body.

[0006] The cable introduction device comprises a pipe joint outside the aluminum shell and a cable connected to the pipe joint.

[0007] The optical signal introduction device includes a through hole opened on an aluminum cover body, and a round tube surrounding the through hole is arranged on one side of the aluminum cover body close to the aluminum shell, and the inner side of the round tube is stepped to form a glass fixing groove and a glass pressure plate groove, and the through hole, the glass fixing groove and the glass pressure plate groove are connected in sequence to form an optical channel, and the inner diameters of the through hole, the glass fixing groove and the glass pressure plate groove increase in sequence, and a light-transmitting sheet is installed in the glass fixing groove, and an annular aluminum pressure plate is installed in the glass pressure plate groove. After assembly, the aluminum pressure plate and the inner wall of the aluminum cover body fix the light-transmitting sheet in the glass fixing groove.

[0008] The inner sealing structure comprises an annular sealing portion which is tightly attached to the inner side of the aluminum shell and the bottom surface of the aluminum cover.

[0009] The outer sealing structure comprises an outer edge of the aluminum cover body that is tightly attached to the top surface of the aluminum shell.

[0010] Another object of the utility model is to provide an explosion-proof optical communication device using the explosion-proof housing which can reduce electromagnetic radiation and quickly dissipate heat.

[0011] An explosion-proof optical communication device using the housing, wherein an optical communicator, a switch and a fixing frame for fixing the optical communicator and the switch are installed inside the enclosed space, the optical signal introduction device, the optical communicator and the switch are arranged in sequence from top to bottom, the cable introduction device, the optical communicator and the switch are electrically connected, and the optical communicator is also communicatively connected with the switch.

[0012] The aluminum shell is installed on an aluminum fixing bracket.

[0013] The fixing frame comprises a bottom plate fixedly connected to the bottom of the switch, and a supporting plate fixedly connected to the optical communicator is installed on the side of the bottom plate. After assembly, the bottom plate is fixed inside the aluminum shell.

[0014] The beneficial effects of the utility model are as follows: the aluminum shell and the aluminum cover have good thermal conductivity and electrical conductivity, thereby dissipating the electricity and heat generated by the entire electrical equipment to avoid ignition of combustible gases. At the same time, the inner sealing structure and the outer sealing structure are used to prevent heat leakage of the electrical equipment, thereby preventing explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural exploded diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the aluminum cover. DETAILED DESCRIPTION

[0019] Reference Figures 1 to 3An explosion-proof housing comprises an aluminum housing 1 and an aluminum cover 2, the bottom of the aluminum cover 2 extends into the inner side of the aluminum housing 1 and is threadedly connected thereto, the aluminum cover 2 closes the top opening of the aluminum housing to form a closed space, the aluminum housing 1 is provided with a cable introduction device, the aluminum cover 2 is provided with an optical signal introduction device, the inner side of the aluminum housing 1 is provided with an inner sealing structure that is tightly attached to the bottom surface of the aluminum cover, the outer side of the aluminum cover 2 is provided with an outer sealing structure that is tightly attached to the top surface of the aluminum housing, the threaded connection between the aluminum cover and the aluminum housing also serves as a sealing structure, which can also reduce gaps and prevent heat leakage from electrical equipment, and the explosion-proof housing is cylindrical as a whole.

[0020] The aluminum shell and aluminum cover have good thermal conductivity and electrical conductivity, so as to discharge the electricity and heat generated by the entire electrical equipment to avoid ignition of combustible gases. At the same time, the inner sealing structure and the outer sealing structure are used to prevent heat leakage of the electrical equipment, thereby preventing explosion.

[0021] The cable entry device includes a pipe joint 11 on the outside of the aluminum shell and a cable connected to the pipe joint (not shown in the drawing). The cable is a network cable or a power cable. The cable completely blocks the pipe joint 11 to prevent the heat inside it from leaking out.

[0022] The optical signal introduction device includes a through hole 21 opened on an aluminum cover body, and a round tube 22 surrounding the through hole is arranged on one side of the aluminum cover body 2 close to the aluminum shell, and the inner side of the round tube 22 is stepped to form a glass fixing groove 221 and a glass pressure plate groove 222. The through hole, the glass fixing groove and the glass pressure plate groove are connected in sequence to form an optical channel, and the inner diameters of the through hole, the glass fixing groove and the glass pressure plate groove increase in sequence. A light-transmitting sheet 23 is installed in the glass fixing groove 221, and an aluminum pressure plate 223 is installed in the glass pressure plate groove 222. After assembly, the aluminum pressure plate and the inner wall of the aluminum cover body fix the light-transmitting sheet in the glass fixing groove.

[0023] The inner sealing structure includes an annular sealing portion 31 which is tightly attached to the inner side of the aluminum shell and the bottom surface of the aluminum cover.

[0024] The outer sealing structure includes an outer edge 41 of the aluminum cover body that is tightly attached to the top surface of the aluminum shell.

[0025] An explosion-proof optical communication device using the housing, wherein an optical communicator 51, a switch 52 and a fixing frame for fixing the optical communicator and the switch are installed inside the enclosed space, the optical signal introduction device, the optical communicator and the switch are arranged in sequence from top to bottom, the cable introduction device, the optical communicator and the switch are electrically connected, the optical communicator can be an infrared optical communicator, the optical communicator receives or transmits an optical signal through the optical signal introduction device, and the optical communicator is also communicatively connected with the switch.

[0026] The aluminum shell is mounted on an aluminum fixing bracket 61, which has good thermal conductivity and electrical conductivity, so that the electricity and heat generated by the entire electrical equipment can be discharged away, thereby preventing explosion.

[0027] The fixing frame includes a bottom plate 71 fixedly connected to the bottom of the switch by a first screw, and a support plate 72 fixedly connected to the optical communicator is installed on the side of the bottom plate 71. After assembly, the bottom plate 71 is fixed to the inside of the aluminum shell by a second screw or welding (the second screw cannot extend outward from the aluminum shell). With this structure, the switch and the optical communicator are fixed, and the switch does not contact the optical communicator, so that the optical communicator and the switch are prevented from generating heat due to friction, and it is ensured that neither the switch nor the optical communicator contacts the inner wall of the aluminum shell to prevent heat from being generated by friction. It can also ensure that the optical communicator receives or optical signals, and the support plate 72 can also limit the position of the switch.

[0028] The top surface of the aluminum cover is also affixed with an aluminum nameplate 81, which has good thermal conductivity and electrical conductivity, thereby dissipating the electricity and heat generated by the entire electrical equipment, thereby preventing explosion.

[0029] The above implementation modes cannot limit the protection scope of the present invention. The equivalent modifications and changes made by those skilled in the art without departing from the overall concept of the present invention are still within the scope of the present invention.

Claims

1. An explosion-proof housing, characterized in that The invention comprises an aluminum shell (1) and an aluminum cover (2), wherein the bottom of the aluminum cover (2) extends into the inner side of the aluminum shell (1) and is threadedly connected thereto, and the aluminum cover (2) closes the top opening of the aluminum shell to form a closed space. The aluminum shell (1) is provided with a cable introduction device, and the aluminum cover (2) is provided with an optical signal introduction device. The inner side of the aluminum shell (1) is provided with an inner sealing structure tightly attached to the bottom surface of the aluminum cover, and the outer side of the aluminum cover (2) is provided with an outer sealing structure tightly attached to the top surface of the aluminum shell.

2. The explosion-proof housing according to claim 1, characterized in that The cable introduction device comprises a pipe joint (11) outside the aluminum shell and a cable connected to the pipe joint.

3. The explosion-proof housing according to claim 2, characterized in that The optical signal introduction device comprises a through hole (21) formed on an aluminum cover body; a circular tube (22) surrounding the through hole is provided on one side of the aluminum cover body (2) close to the aluminum shell; the inner side of the circular tube (22) is stepped to form a glass fixing groove (221) and a glass pressing plate groove (222); the through hole, the glass fixing groove and the glass pressing plate groove are connected in sequence to form an optical channel; the inner diameters of the through hole, the glass fixing groove and the glass pressing plate groove increase in sequence; a light-transmitting sheet (23) is installed in the glass fixing groove (221); and an annular aluminum pressing plate (223) is installed in the glass pressing plate groove (222); after assembly, the aluminum pressing plate and the inner wall of the aluminum cover body fix the light-transmitting sheet in the glass fixing groove.

4. The explosion-proof housing according to claim 3, characterized in that The inner sealing structure comprises an annular sealing portion (31) which is tightly attached to the inner side of the aluminum shell and the bottom surface of the aluminum cover.

5. The explosion-proof housing according to claim 4, characterized in that The outer sealing structure comprises an outer edge (41) which is tightly attached to the outer side of the aluminum cover and the top surface of the aluminum shell.

6. An explosion-proof optical communication device using the housing according to any one of claims 1 to 5, characterized in that An optical communicator (51), a switch (52) and a fixing frame for fixing the optical communicator and the switch are installed inside the closed space; the optical signal introduction device, the optical communicator and the switch are arranged in sequence from top to bottom; the cable introduction device, the optical communicator and the switch are electrically connected; and the optical communicator is also connected to the switch for communication.

7. The explosion-proof optical communication device according to claim 6, characterized in that The aluminum shell is mounted on an aluminum fixing bracket (61).

8. The explosion-proof optical communication device according to claim 7, characterized in that The fixing frame comprises a bottom plate (71) fixedly connected to the bottom of the switch, and a support plate (72) fixedly connected to the optical communicator is installed on the side of the bottom plate (71). After assembly, the bottom plate (71) is fixed inside the aluminum shell.

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