Orifice-plate spark particle obstructing device
A barrier device and orifice technology, applied in fire rescue, etc., can solve the problems that affect the safe use of positive pressure explosion-proof control cabinets, cannot ensure the effective barrier of spark particles, and simple structure, so as to improve the reliability of safe operation and simple and ingenious structure , the effect of prolonging the service life
Inactive Publication Date: 2013-10-09
WUXI BEYOND AOK ELECTRIC
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Problems solved by technology
[0002] In the prior art, the exhaust port of the positive pressure explosion-proof control cabinet usually uses a rubber plate as a barrier device for spark particles, which has a simple structure and is easy to age. Long-term operation cannot ensure effective barrier to spark particles, which affects the positive pressure explosion-proof control cabinet. safe use of
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[0011] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0012] As shown in the figure, the orifice-type spark particle blocking device in the embodiment is mainly composed of parts such as an exhaust pipe 1, an orifice plate 2 and a shield 3, and the exhaust pipe 1, the orifice plate 2 and the shield 3 are all It is made of metal material.
[0013] like figure 1 As shown, the exhaust pipe 1 is fixedly installed in the exhaust port of the positive pressure explosion-proof control cabinet by screw connection or welding, and two orifice plates are fixed on the inner end of the exhaust pipe 1 by screw connection or welding. 2. A plurality of through holes 2a are opened on the orifice plate 2; the shield 3 is set on the orifice plate 2, the inner wall of the shield 3 is welded and fixed to the edge of the orifice plate 2, and the edge of the opening of the shield 3 is connected to the positive pressure explosion-proof c...
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The invention relates to an orifice-plate spark particle obstructing device which is applied on a positive pressure explosion-proof control cabinet. The obstructing device contains an exhaust pipe, an orifice plate and a shield. The exhaust pipe is fixedly arranged through an air exhaust opening of the positive pressure explosion-proof control cabinet. At least one orifice plate is fixed on the internal end of the exhaust pipe. The orifice plate is equipped with a plurality of through holes. The shield is sleeved on the orifice plate. The inner wall of the shield is fixedly connected with the edge of the orifice plate. There is a certain distance from the edge of the shield opening to the inner wall of the positive pressure explosion-proof control cabinet. The device has a simple and ingenious structure, is arranged at the air exhaust opening of the positive pressure explosion-proof control cabinet, and can be used to obstruct and intercept sparks and heat particles generated during the operation process of the explosion-proof control cabinet to discharge into an external dangerous environment of the control cabinet through the orifice plate, the shield and the exhaust pipe. Thus, the cooling distance of the spark particles is increased, and safe operation reliability of the positive pressure explosion-proof control cabinet is raised. The orifice plate, the shield and the exhaust pipe are all prepared from a metal material, the obstructing material is optimized, and the service life of the obstructing device is prolonged.
Description
technical field [0001] The invention relates to an orifice plate type spark particle blocking device applied to a positive pressure explosion-proof control cabinet. Background technique [0002] In the prior art, the exhaust port of the positive pressure explosion-proof control cabinet usually uses a rubber plate as a barrier device for spark particles, which has a simple structure and is easy to age. Long-term operation cannot ensure effective barrier to spark particles, which affects the positive pressure explosion-proof control cabinet. safe use. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a simple and ingenious orifice-type spark particle barrier device, which adopts an orifice structure to cool and cool the sparks or hot particles generated in the positive pressure explosion-proof control cabinet. The barrier improves the safe operation reliability of the positive pressure explo...
Claims
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IPC IPC(8): A62C4/00
Inventor 孙爱平何大庆林伯凝王皞赟
Owner WUXI BEYOND AOK ELECTRIC