Electromagnetic shielding mode of electric apparatus chassis in new type train

Abstract

An electromagnetic shielding method for a train electrical box. For all parts of the cabinet body that need to be electromagnetically shielded, all side panels and doors are made of conductive materials, and are subjected to surface treatment, electrophoresis and plastic spraying treatment, and all outer panels and internal protective panels The inside of the accessories and the profile accessories are electrically connected to ensure the conductivity of the surface of the box. Rittal's ROXTEC electromagnetic shielding technology is used for the incoming line on the top of the box or other parts, and flexible clamp-on conductive rubber is added. All the side panels and the contact between the door and the base frame are sealed with electromagnetic shielding foam conductive rubber, so that it can be tightly pressed with the frame profile, and achieve a good electromagnetic shielding effect and improve vibration resistance. sex. The joints in the middle of the door knot are also sealed with conductive electromagnetic shielding rubber material and sprayed with conductive paint inside and outside, which realizes a good electromagnetic shielding effect of the door structure.

Description

technical field [0001] The invention belongs to the configuration and arrangement of electrical cabinets for trains, in particular to the configuration and arrangement of network control panel cabinets on trains, as well as the configuration and structure of the cabinets in electromagnetic compatibility mode adopted by the network control panel cabinets. Background technique [0002] Electromagnetic shielding on the box of the electrical device is a protective measure for the box of the electrical device to prevent external electromagnetic interference, which is helpful for improving the stability and reliability of the electrical components in the box and extending The service life is very beneficial. Especially for the locomotive network control panel cabinet, the electromagnetic compatibility method is an electromagnetic shielding protection measure for the various precision electronic components in the panel cabinet to avoid electromagnetic interference to the outside, a...

AI Technical Summary

Problems solved by technology

Most of the existing locomotive control panel cabinets are realized by integral welding and ordinary dust-proof sealing. Although this method can basically meet the railway IEC standard, there is still a lot of room for improvement.

Moreover, although the integrally welded frame form of the existing control panel box body is beneficial to the overall strength and rigidity of the cabinet, this integrally welded frame form also has some deficiencies.

One is that this overall welded panel wall frame has the disadvantages of large deformation and unsightly appearance; the other is that the structure is too heavy, mainly because the wall panels of this type of machine frame are not removable, so the internal components When installing, it is necessary to consider leaving enough space for installation and maintenance, which will inevitably increase the structure of the box, so it is necessary to improve it.

At present, some people propose to change the existing locomotive control panel cabinet into a skeleton-type puzzle structure, but to realize the skeleton-type panel structure of the control panel cabinet, it is first necessary to solve the electromagnetic shielding problem of the skeleton-type panel structure, and In actual use, it is also found that it is necessary to further improve the electromagnetic shielding of various control panel cabinets of existing locomotives.

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