Isolated safety barrier
A safety barrier and isolation technology, applied in the field of safety barriers, can solve the problems of long replacement operation time, inconvenient use process, inability to adapt to various host controllers and on-site sensor and actuator signal transmission, etc., to achieve increased functions Variety and the effect of saving operation time
Pending Publication Date: 2021-07-13
安徽启电自动化科技有限公司
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[0003] At present, there are mainly Zener safety barriers and isolated safety barriers, but the overall performance of the isolated safety barrier is significantly higher than that of the Zener safety barrier. The isolated safety barrier can not only prevent dangerous energy from entering the dangerous site from the intrinsically safe circuit terminals , improve the explosion-proof performance of the intrinsically safe circuit of the system, also increase the anti-interference ability of the system, and greatly improve the reliability of the system operation. The existing technology uses different boards and interfaces for different instruments. The signal adaptive ability of the existing isolated safety barrier is poor, and it cannot adapt to the signals between various host controllers and field sensors and actuators. Passing, the process of using is very inconvenient, and the replacement operation takes a long time
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[0019] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship show...
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The invention provides an isolated safety barrier which comprises a safety barrier body, a power supply part, a functional loop part and a control part. The functional loop part is arranged in the safety barrier body, the functional loop part at least comprises two groups of loop units which have different functions and can work independently, and each loop unit comprises an inlet end and an outlet end; the safety barrier body is provided with an interface part, the interface part comprises an access port and an output port, the inlet end is connected with the inner side of the access port, and the outlet end is connected with the inner side of the output port; and the control part is used for switching the connection and disconnection between different loop units and the interface part. According to the present invention, various functional isolated safety barriers are integrated in a same device, and a specific functional loop can be controlled to work, so that the signal self-adaption can be realized, the safety barrier can be used for various signal types, the functional diversity of the same safety barrier is increased, and the operation time is saved.
Description
technical field [0001] The invention relates to the technical field of safety barriers, in particular to an isolated safety barrier. Background technique [0002] The safety barrier, also known as associated equipment, is an important part of the intrinsically safe circuit system. It is connected between the intrinsically safe circuit and the non-intrinsically safe circuit, and its structure prevents the non-intrinsically safe circuit from adversely affecting the intrinsically safe circuit. [0003] At present, there are mainly Zener safety barriers and isolated safety barriers, but the overall performance of the isolated safety barrier is significantly higher than that of the Zener safety barrier. The isolated safety barrier can not only prevent dangerous energy from entering the dangerous site from the intrinsically safe circuit terminals , improve the explosion-proof performance of the intrinsically safe circuit of the system, also increase the anti-interference ability o...
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IPC IPC(8): H02H9/00
CPCH02H9/00
Inventor 闫化凯
Owner 安徽启电自动化科技有限公司