An explosion-proof structure and an explosion-proof lamp

Abstract

The utility model discloses an explosion -proof structure and explosion -proof lamps and lanterns, wherein, explosion -proof structure explosion -proof includes radiator, front cover and back cover. The inner chamber of radiator is provided with the baffle, and the inner chamber is divided into two cavity bodies of upper and lower with baffle, and the upper and lower ends of radiator each has an opening, and the front cover and back cover are connected with the opening respectively, and then two cavity bodies are closed into two explosion -proof spaces, one explosion -proof space is used for assembling the power module of lamps and lanterns, and the other explosion -proof space is used for assembling the light source module of lamps and lanterns, the baffle is provided with the threading hole, and the threading hole is communicated with two explosion -proof spaces, and one side or both sides of the baffle at the threading hole is provided with the gluing position, and the gluing position is used for filling the pouring sealant. Explosion -proof lamps and lanterns include above -mentioned explosion -proof structure, and light source module, power module. The utility model provides technical scheme, under the condition of reducing the quantity of explosion -proof surface, not only retains the necessary explosion -proof surface and satisfies the limit value requirement of three elements of explosion -proof standard to explosion -proof, but also improves the stability of explosion -proof performance.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof lighting fixtures, and in particular to an explosion-proof structure and an explosion-proof lighting fixture. Background Technology

[0002] Explosion-proof lighting fixtures are generally used in special environments such as petrochemical plants, coal mines, and pharmaceutical workshops where flammable gases, dust, or flammable and explosive substances are present, requiring extremely high explosion-proof ratings. Current technology utilizes gravity casting to create a complete cavity for the power supply cavity and LED cavity, sharing a single heat dissipation component. Simultaneously, leveraging the advantage of pure aluminum's lack of sand holes after processing and employing threaded explosion-proof methods, Zone 1 explosion-proof requirements can be met. However, this approach also has the following drawbacks: 1) Designing for planar explosion-proof requires numerous screws and a wide explosion-proof surface; 2) The large explosion-proof surface increases product weight and complicates assembly processes; 3) Several large planes need to be machined to meet explosion-proof requirements; 4) The numerous assembly steps and parts result in high labor and material costs. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides an explosion-proof structure and an explosion-proof lighting fixture.

[0004] An explosion-proof structure includes a heat sink, a front cover, and a rear cover; wherein,

[0005] The radiator has a partition in its inner cavity, which divides the inner cavity into upper and lower cavities. The radiator has an opening at each of its upper and lower ends. The front cover and the rear cover are connected to the openings respectively, which seal the two cavities into two explosion-proof spaces.

[0006] One of the explosion-proof spaces is used to assemble the power module of the lamp, and the other explosion-proof space is used to assemble the light source module of the lamp; the partition is provided with a wire hole, which connects the two explosion-proof spaces; the partition is provided with an adhesive application position on one or both sides of the wire hole, which is used to fill the potting compound.

[0007] An explosion-proof lighting fixture includes an electrically connected light source module and a power supply module, as well as an explosion-proof structure as described above; the light source module and the power supply module are respectively installed in two explosion-proof spaces.

[0008] The explosion-proof structure and explosion-proof lighting fixture provided by this utility model integrate the originally dispersed structures such as the shell, end cover, and lamp body / body in traditional explosion-proof lighting fixtures into a single main cavity through an integral die-cast / integral casting heat sink, as well as front and rear covers that cooperate with the heat sink. It also converges the multiple flanges / joint surfaces in the traditional solution into two explosion-proof spaces with the fewest critical explosion-proof surfaces, thereby structurally reducing leakage paths and failure points.

[0009] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0010] 1) No need for multiple heat sinks for explosion protection. By integrating the power supply cavity and light source cavity, the number of explosion-proof surfaces is reduced, the overall structure is simpler, and the number of parts in the lamp is reduced.

[0011] 2) By separating multiple cavities (such as independent light source cavity / power supply cavity / wiring cavity), potential ignition sources are confined to more controllable cavities, reducing the risk of cross-cavity explosion transmission. At the same time, it is easier to perform independent sealing and thermal management, improving the overall temperature group compliance capability of the machine.

[0012] 3) The die-cast integrated radiator structure has the characteristics of strong integrity, impact resistance and good dimensional consistency. It can maintain a stable fit between the cavity and the explosion-proof surface under vibration and impact conditions, reducing the risk of failure due to loosening.

[0013] In summary, this solution, while reducing the number of flameproof surfaces, not only retains the necessary flameproof surfaces and meets the limit requirements of the flameproof standard for the three elements of flameproof (minimum effective length L, maximum gap W, and surface roughness Ra), but also improves the stability of the flameproof performance. Attached Figure Description

[0014] Figure 1 This is an exploded view of the explosion-proof lamp in the embodiment of this utility model;

[0015] Figure 2 This is a cross-sectional view of the explosion-proof lamp in an embodiment of this utility model;

[0016] Figure 3 This is a partial perspective view of the explosion-proof lighting fixture in an embodiment of this utility model;

[0017] Figure 4 This is a partial cross-sectional view of the explosion-proof lighting fixture in an embodiment of this utility model;

[0018] The markings in the accompanying drawings are as follows:

[0019] 1. Installation accessories; 2. Heat sink; 21. Partition plate; 22. Wiring hole; 23. Boss; 3. Front cover; 4. Rear cover; 5. Pressure frame; 6. Aluminum substrate; 7. LED light source; 8. Glass plate; 9. Screws; 10. Pressure plate; 11. Upper fixing plate; 12. Power supply; 13. Lower fixing plate; 14. Rear cover rubber ring; 15. Encapsulating glue; 16. Front cover rubber ring. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Provides an explosion-proof structure and an explosion-proof lighting fixture, such as Figures 1 to 4 As shown, the explosion-proof structure is versatile and can be used in explosion-proof lighting fixtures. The following explanation uses an explosion-proof industrial and mining lamp as an example. The explosion-proof structure specifically includes a heat sink 2, a front cover 3, and a rear cover 4.

[0022] The radiator is preferably made of one-piece die casting or integral casting; a partition 21 is provided in its inner cavity, which divides the inner cavity into upper and lower chambers; each of the upper and lower ends of the radiator has an opening, and the front cover and rear cover are respectively connected to the openings to seal the two chambers into two explosion-proof spaces. For example, the front cover and rear cover are connected to the radiator by threads.

[0023] One explosion-proof space is used to assemble the power supply module of the lighting fixture, and the other explosion-proof space is used to assemble the light source module of the lighting fixture, thus separating the power supply and the light source within a space inside a heat sink. The partition has wiring holes 22 connecting the two explosion-proof spaces, allowing wires to pass through and connect electrical components in the two spaces. On one or both sides of the wiring holes on the partition are sealing areas for filling with potting compound 15. The potting compound seals the wires, reducing the risk of explosion transmission.

[0024] Furthermore, the application position includes a boss 23 located on one or both sides of the partition, the boss forming a groove area around the wire hole, the groove area being filled with potting compound; a pressure plate 10 is provided on the upper end face of the boss, the pressure plate being connected to the partition by screws 9, used to press the potting compound tightly and seal it.

[0025] Furthermore, a rear cover rubber ring 14 is provided between the rear cover and the opening of the radiator; a front cover rubber ring 16 is provided between the front cover and the opening of the radiator. The front cover rubber ring and the rear cover rubber ring can further increase the airtightness.

[0026] Furthermore, the explosion-proof space near the front cover is used to assemble the light source module of the lamp. The lower outlet of the explosion-proof space is first fitted with a front cover rubber ring 16, and then covered by a glass plate 8. A pressure frame 5 is provided below the glass plate to press the glass plate and the front cover rubber ring tightly. After the front cover is connected to the heat sink, the front cover encloses the front cover rubber ring, the glass plate and the pressure plate inside, thus forming a tighter explosion-proof space.

[0027] The explosion-proof lighting fixture is based on the aforementioned explosion-proof structure and includes an electrically connected light source module and a power supply module, as well as the explosion-proof structure described above. The light source module and the power supply module are installed in two explosion-proof spaces respectively, that is, the light source module and the power supply module can be arbitrarily configured in any explosion-proof space according to actual needs.

[0028] In one implementation, the explosion-proof space near the rear cover is a power supply cavity, and the power supply module is installed inside the power supply cavity; the explosion-proof space near the front cover is a light source cavity, and the light source module is installed inside the light source cavity.

[0029] More specifically, the power supply module includes a power supply 12, an upper fixing plate 11, and a lower fixing plate 13; the upper fixing plate and the lower fixing plate are connected to the upper and lower ends of the power supply respectively and fixed inside the power supply cavity. The light source module includes an aluminum substrate 6, on which an LED light source 7 is disposed; the aluminum substrate is fixed to one side of the partition by screws.

[0030] Furthermore, the explosion-proof lighting fixture also includes mounting accessories 1, which are used to be threadedly connected to the rear cover and mounted in a preset position, such as on a wall.

[0031] The above is a description of the present utility model, which is used to help understand the present utility model. However, the implementation of the present utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the principle of the present utility model shall be considered as equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An explosion-proof structure, characterized in that, Includes a radiator, front cover, and rear cover; among which, The radiator has a partition in its inner cavity, which divides the inner cavity into upper and lower cavities. The radiator has an opening at each of its upper and lower ends. The front cover and the rear cover are connected to the openings respectively, which seal the two cavities into two explosion-proof spaces. One of the explosion-proof spaces is used to assemble the power module of the lamp, and the other explosion-proof space is used to assemble the light source module of the lamp; the partition is provided with a wire hole, which connects the two explosion-proof spaces; the partition is provided with an adhesive application position on one or both sides of the wire hole, which is used to fill the potting compound.

2. The explosion-proof structure as described in claim 1, characterized in that, The adhesive application position includes a boss located on one or both sides of the partition plate. The boss forms a groove area around the wire hole, and the groove area is filled with the potting adhesive. A pressure plate is provided on the upper end face of the boss, and the pressure plate seals the potting adhesive.

3. The explosion-proof structure as described in claim 1, characterized in that, A rear cover rubber ring is provided between the rear cover and the opening of the radiator; a front cover rubber ring is provided between the front cover and the opening of the radiator.

4. The explosion-proof structure as described in claim 1, characterized in that, The explosion-proof space near the front cover is used to assemble the light source module of the lamp. The lower outlet of the explosion-proof space is first fitted with a front cover rubber ring, and then covered by a glass plate. A pressure frame is provided below the glass plate, which is used to press the glass plate and the front cover rubber ring tightly. After the front cover is connected to the heat sink, the front cover encloses the front cover rubber ring, the glass plate and the pressure plate inside.

5. The explosion-proof structure according to any one of claims 1 to 4, characterized in that, The radiator is made by die casting or integral casting.

6. An explosion-proof lighting fixture, characterized in that, It includes an electrically connected light source module and a power supply module, and an explosion-proof structure as described in any one of claims 1 to 5; the light source module and the power supply module are respectively installed in two explosion-proof spaces.

7. The explosion-proof lighting fixture as described in claim 6, characterized in that, The explosion-proof space near the rear cover is a power supply cavity, and the power supply module is installed in the power supply cavity; the explosion-proof space near the front cover is a light source cavity, and the light source module is installed in the light source cavity.

8. The explosion-proof lighting fixture as described in claim 7, characterized in that, The power module includes a power supply, an upper fixing plate, and a lower fixing plate; the upper fixing plate and the lower fixing plate are respectively connected to the upper and lower ends of the power supply and fixed inside the power supply cavity.

9. The explosion-proof lighting fixture as described in claim 7, characterized in that, The light source module includes an aluminum substrate on which an LED light source is disposed; the aluminum substrate is fixed to one side of the partition by screws.

10. The explosion-proof lighting fixture as described in any one of claims 6 to 9, characterized in that, It also includes mounting accessories, which are used to connect with the back cover and mount it in a preset position.

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