Explosive-proof device

A technology of explosion-proof and shell, which is applied in the direction of the measuring device shell, etc., can solve the problems of dangerous surrounding environment, failure to meet the high standard requirements of flame-proof performance, single flame-proof shell, etc., and achieve the effect of improving the flame-proof performance

Active Publication Date: 2014-03-26
艾默生过程控制流量技术有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Flameproof transmitters in the prior art generally have a single flameproof housing, which can only be used in environments where the requirements for flameproofing are not too high, for example, it can only be used in hazardous area classification levels according to the International Electrotechnical Commission Zone 1 or Zone 2
In the application environment with very high requirements for flameproof performance, such as in zone 0 of the hazardous area classification level according to the International Electrotechnical Commission, when a single flameproof shell bursts or partially fails during use, the surrounding environment would be very dangerous
Therefore, this transmitter with a single flameproof housing sometimes cannot meet the high standard requirements of the application environment for flameproof performance

Method used

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Embodiment Construction

[0011] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage.

[0012] Such as figure 1 As shown, the flameproof device 1 according to the present invention includes a first flameproof casing 2 and a second flameproof casing 3, and the interior of the first flameproof casing 2 has an accommodating space for accommodating the For electrical equipment, such as circuit boards, wiring components and other electronic components that may cause sparks or short circuits, the first flameproof enclosure 2 is arranged in the inner space of the second flameproof enclosure 3 . The first flameproof casing 2 includes a casing part 21 and a front end cover part 22 arranged on the upper part of the casing part 21, wherein the casing part 21 can be an integrally formed compon...

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Abstract

The invention belongs to the field of explosive-proof electrical equipment, and in particular relates to an explosive-proof device (1) with double explosive-proof shells. The explosive-proof device comprises a first explosive-proof shell (2) used for accommodating electrical equipment, and a second explosive-proof shell (3), wherein the first explosive-proof shell (2) is arranged in the internal space of the second explosive-proof shell (3). The explosive-proof performance of electrical equipment such as a transmitter, provided with the explosive-proof device is greatly improved, so that the explosive-proof device can be used in a using environment with high requirements on explosive-proof performance. When the first explosive-proof shell (2) fails partially or completely, the explosive-proof function can be further performed through the second explosive-proof shell (3); therefore, sparks or explosion in the electrical equipment can be prevented from leaking to an external application environment.

Description

technical field [0001] The invention relates to a flameproof device. Background technique [0002] At present, transmitters are more and more widely used in the field of industrial control. They are mainly used to convert physical quantities such as temperature, pressure, concentration, flow, and liquid level of the measured target into available standard signals. Transmitters are widely used in petroleum, chemical, textile and other fields. Since oils, chemicals, and fiber materials are mostly flammable dangerous goods, transmitters generally need to supply current, so the transmitter’s It is inevitable that there will be electrical faults inside, and sparks or short circuits may occur. Therefore, the transmitters used in these fields must have flameproof performance, so that unsafe factors such as sparks or short circuits generated inside the transmitter are completely enclosed in the shell. body so that it cannot leak to the outside of the transmitter. [0003] Flamepro...

Claims

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Application Information

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IPC IPC(8): G01D11/24
Inventor 赵恒
Owner 艾默生过程控制流量技术有限公司
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