Explosion-proof industrial camera

Abstract

An explosion-proof industrial camera comprises a camera body and further comprises a rear shell and a front cover which is connected with the rear shell in a separated mode, an explosion-proof cavity is formed in the middle of the front cover, the camera body is fixed in the explosion-proof cavity, an inner installation frame is fixed in an inner cavity of the rear shell, and the rear portion of the camera body is installed in the inner installation frame. The front cover comprises a front cover body, window glass encapsulated on the inner side of a window of the front cover body, and a glass pressing ring fixed in an inner cavity of the front cover and pressed on the window glass and the front cover body; and the front part of the camera body is mounted in the glass pressing ring. The camera body is stably fixed in the explosion-proof cavity between the front cover and the rear shell through the glass pressing rings and the inner mounting frame on the front side and the rear side, the assembly precision is high, the explosion-proof performance is good, heat generated in the using process of the camera body is rapidly transmitted to the front cover and the rear shell through the glass pressing rings and the inner mounting frame, the rapid heat dissipation effect is achieved, and the service life of the camera is prolonged. The structure is simple and compact, and the size is small.

Description

Technical Field

[0001] The utility model belongs to the field of explosion-proof, and in particular relates to an explosion-proof industrial camera. Background Art

[0002] Electrical equipment used in some gas explosive, dust and fiber explosive environments (such as coal mines, petrochemicals, gas stations, natural gas extraction, drilling platforms, military industries, mines, metal polishing workshops with explosion hazards, etc.) needs to be designed to be explosion-proof. Otherwise, electric sparks, arcs and other electric fire sources accidentally generated during equipment operation may cause explosions and lead to safety accidents.

[0003] Therefore, the market demands the design of an explosion-proof industrial camera with strong explosion-proof performance, suitable for use in explosion-proof areas, and used for taking pictures, recording and measuring. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an explosion-proof industrial camera.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an explosion-proof industrial camera, including a camera body, a rear shell, and a front cover connected to the rear shell to form an explosion-proof cavity in the middle, the camera body is fixed in the explosion-proof cavity, an inner mounting frame is fixed in the inner cavity of the rear shell, the rear part of the camera body is installed in the inner mounting frame, the front cover includes a front cover body, a window glass cast on the inner side of the window of the front cover body, a glass pressure ring fixed in the inner cavity of the front cover and pressed on the window glass and the front cover body, and the front part of the camera body is installed in the glass pressure ring.

[0006] In some embodiments, the inner mounting frame is made of a high thermal conductivity material in one piece, and includes a nesting frame that is sleeved on the rear of the camera body, and an inner fixed edge located at the edge of the nesting frame mouth, and the inner fixed edge is fixedly connected to an inner step of the rear shell by screws.

[0007] In some embodiments, a cable gland is connected to the bottom of the rear shell via explosion-proof threads, the bottom of the nesting frame has a hollow hole, the camera body wiring terminal extends out of the hollow hole and faces the bottom of the rear shell, and a wiring cavity with a centerline dimension a of 35mm-45mm is formed between the wiring terminal and the bottom of the rear shell.

[0008] In some embodiments, the inner mounting frame is made of copper in one piece.

[0009] In some embodiments, the outer surfaces of the rear shell and the front cover are integrally formed and are provided with a plurality of heat dissipation fins distributed along a center line direction.

[0010] In some embodiments, the rear housing and the front cover are respectively made of aluminum or an aluminum alloy.

[0011] In certain embodiments, after the rear shell and the front cover are sleeved together via a cylindrical flameproof joint surface, the rear shell and the front cover are fixedly connected via a plurality of screws.

[0012] In some embodiments, the glass pressure ring is made of an integral molding, including a pressure plate located on the outer ring and a positioning ring located on the inner ring and extending axially backward. The pressure plate is fixedly connected to the front cover by multiple screws, and the camera body is inserted into the positioning ring.

[0013] In some embodiments, the glass pressing ring is made of an integrally formed aluminum alloy.

[0014] The scope of this utility model is not limited to technical solutions formed by a specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents. For example, technical solutions formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the camera body is stably fixed in the explosion-proof cavity between the front cover and the rear shell through the glass pressure rings and the inner mounting frame on the front and rear sides, with high assembly precision and good explosion-proof performance. In addition, the heat generated by the camera body during use is quickly transferred to the front cover and the rear shell through the glass pressure ring and the inner mounting frame, achieving the effect of rapid heat dissipation, and the structure is simple and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of an explosion-proof industrial camera;

[0017] Figure 2 This is the rear view of an explosion-proof industrial camera;

[0018] Figure 3 It is a rear view of a high-precision explosion-proof measurement longitudinal section;

[0019] Figure 4 For attachment Figure 3 AA direction cross section;

[0020] Figure 5 For attachment Figure 3 BB direction cross-section;

[0021] Including: 1. Camera body; 2. Back shell; 3. Front cover; 31. Front cover body; 32. Window glass; 4. Inner mounting bracket; 4a. Nesting bracket; 4b. Hole; 4c. Fixed ring edge;

[0022] 5. Glass pressure ring; 5a. Pressure plate; 5b. Positioning ring; 6. Flameproof chamber; 7. Cable gland. DETAILED DESCRIPTION

[0023] As shown in the accompanying drawings, an explosion-proof industrial camera includes an aluminum alloy rear housing 2, an aluminum alloy front cover 3 flameproofly mounted on the rear housing 2, and a flameproof chamber 6 formed between the front cover 3 and the rear housing 2. The camera body 1 is fixed in the flameproof chamber 6. The detailed installation structure is as follows:

[0024] An inner mounting frame 4 is fixed within the inner cavity of the rear shell 2. The inner mounting frame 4 is formed integrally from a highly thermally conductive material, and in this embodiment, is formed integrally from copper. The inner mounting frame 4 includes a nesting frame 4a that fits over the rear portion of the camera body 1, and a fixed ring edge 4c located at the edge of the opening of the nesting frame 4a. The fixed ring edge 4c is fixedly connected to an inner step of the rear shell 2 by screws. The rear portion of the camera body 1 is embedded in the copper nesting frame 4a, and the rear portion of the camera body 1 and the nesting frame 4a are fixedly connected by multiple screws. The camera body 1 is securely mounted within the rear shell 2 via the copper inner mounting frame 4, and heat is quickly transferred to the rear shell 2 via the copper inner mounting frame 4, achieving a rapid heat dissipation effect.

[0025] The bottom of the nesting frame 4a features a perforation 4b. The camera body 1's wiring terminals extend through this perforation, facing the bottom of the rear housing 2. A cable gland 7 is connected to the bottom of the rear housing 2 via flameproof threads. The threads have an effective engagement count of ≥5 and an effective engagement length of ≥8mm, 2-M25×1.5-6H / 6g. The cables are routed through the cable gland 7 into the flameproof cavity 6 and electrically connected to the camera body 1's wiring terminals. A wiring space with a centerline dimension a of 42mm is formed between the wiring terminals and the bottom of the rear housing 2, facilitating cable storage.

[0026] The front cover 3 comprises a main body 31, a window glass 32 encapsulated within the central window at the front end of the main body 31, and a glass retaining ring 5 secured within the interior of the main body 31 and pressed against the window glass 32. The encapsulation layer is bonded with SY6002 material, with a longitudinal bond length of ≥10mm. The window glass 32 is made of tempered glass, with its edges and the encapsulation layer sandwiched between the outer side of the window in the main body 31 and the glass retaining ring 5, ensuring a good seal.

[0027] The glass pressure ring 5 is made of an integral piece of aluminum alloy, and includes a pressure plate 5a located on the outer ring and a positioning ring 5b located on the inner ring and extending axially backward. The pressure plate 5a is fixedly connected to the front cover 3 by multiple screws, and the front lens of the camera body 1 is inserted into the positioning ring 5b of the glass pressure ring 5 for stability.

[0028] The rear shell 2 and the front cover 3 are connected by a cylindrical flameproof joint surface. The cylindrical flameproof joint surface L ≥ 12.5mm, ic ≤ 0.2mm. A sealing ring is set between the two, and the rear shell 2 and the front cover 3 are fixedly connected by multiple screws. Figure 3 As shown, the outer surfaces of the rear shell 2 and the front cover 3 are integrally formed and are provided with a plurality of heat dissipation fins distributed along the center line direction, so as to facilitate the copper inner mounting frame 4 and the glass pressure ring 5 to transfer heat to the rear shell 2 and the front cover 3, thereby dissipating heat more quickly.

[0029] The assembly method involves electrically connecting the connection terminals of the camera body 1, which are fixed to the copper inner mounting bracket 4, to the cables introduced into the explosion-proof chamber 6 via the cable gland 7. The fixing ring 4c of the inner mounting bracket 4 is fixedly connected to an inner step of the rear housing 2 using screws. The positioning ring 5b of the glass pressure ring 5 is placed over the front of the camera body 1, and the front cover 3 is placed over the rear housing 2. The front cover 3 and rear housing 2 are then fixed together using multiple screws. This makes installation easy, the structure is simple and compact, the size is small, and the explosion-proof performance is excellent.

[0030] An explosion-proof industrial camera that complies with the provisions of Q / PDDT 022-2024, "I2900 Enterprise Standard for Explosion-Proof High-Precision Measurement Cameras." 2. Applicable ambient temperature range: -20°C ≤ Ta ≤ 40°C; 3. Protection level: IP65; 4. Rated voltage: DC18V, rated current: 3A.

[0031] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. An explosion-proof industrial camera, comprising a camera body (1), characterized in that: It also includes a rear shell (2), and a front cover (3) connected to the rear shell (2) to form an explosion-proof cavity (6). The camera body (1) is fixed in the explosion-proof cavity (6). An inner mounting frame (4) is fixed in the inner cavity of the rear shell (2), and the rear portion of the camera body (1) is mounted in the inner mounting frame (4). The front cover (3) comprises a front cover body (31), a window glass (32) cast in the inner side of the window of the front cover body (31), and a glass pressing ring (5) fixed in the inner cavity of the front cover (3) and pressed on the window glass (32) and the front cover body (31); the front part of the camera body (1) is mounted in the glass pressing ring (5).

2. The explosion-proof industrial camera according to claim 1, characterized in that: The inner mounting frame (4) is made of a high thermal conductivity material and is integrally formed, comprising a nesting frame (4a) sleeved on the rear of the camera body (1), and a fixed ring edge (4c) located at the edge of the mouth of the nesting frame (4a). The fixed ring edge (4c) is fixedly connected to an inner step of the rear shell (2) by screws.

3. The explosion-proof industrial camera according to claim 2, characterized in that: The bottom of the rear shell (2) is connected to a cable gland (7) via a flameproof thread, the bottom of the nesting frame (4a) has a hollow hole (4b), the connection terminal of the camera body (1) extends out of the hollow hole (4b) and faces the bottom of the rear shell (2), and a connection space with a centerline dimension a of 35mm-45mm is formed between the connection terminal and the bottom of the rear shell (2).

4. The explosion-proof industrial camera according to claim 1, characterized in that: The inner mounting frame (4) is made of copper in one piece.

5. The explosion-proof industrial camera according to claim 1, characterized in that: The outer surfaces of the rear shell (2) and the front cover (3) are respectively integrally formed and are provided with a plurality of heat dissipation fins distributed along the center line direction.

6. The explosion-proof industrial camera according to claim 1, characterized in that: The rear shell (2) and the front cover (3) are respectively made of aluminum or aluminum alloy.

7. The explosion-proof industrial camera according to claim 1, characterized in that: After the rear shell (2) and the front cover (3) are sleeved together via a cylindrical flameproof joint surface, the rear shell (2) and the front cover (3) are fixedly connected via a plurality of screws.

8. The explosion-proof industrial camera according to claim 1, characterized in that: The glass pressure ring (5) is made of an integral molding, comprising a pressure plate (5a) located on the outer ring and a positioning ring (5b) located on the inner ring and extending axially backward. The pressure plate (5a) is fixedly connected to the front cover (3) by a plurality of screws, and the front part of the camera body (1) is inserted into the positioning ring (5b).

9. The explosion-proof industrial camera according to claim 1, characterized in that: The glass pressing ring (5) is made of an aluminum alloy in one piece.

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