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Isolating safety grid

An isolated, safety barrier technology, applied in the direction of electrical components, electrical components, etc.

Inactive Publication Date: 2011-05-11
SUPCON GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]The purpose of the present invention is to provide an isolated safety barrier to solve the problem that only a single power supply input is provided in the prior art, and it is easy to cause isolation when the power supply of the circuit fails Abnormal or stop working technical problems
Another purpose of the present invention is to solve the problem that the existing isolated safety barrier adopts the side terminal wiring mode, which is inconvenient for power-on and installation during engineering construction, and the addition of redundant power supply function will not be conducive to the intensive installation of the isolated safety barrier. question

Method used

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034]The safety barrier is an associated device that connects intrinsically safe equipment and non-intrinsically safe equipment in the intrinsically safe system, and realizes the explosion-proof function of the hazardous location equipment. It is the special safety function of the safety barrier, so special attention should be paid to the safety of the safety barrier. After long-term practice, it is found that the current isolated safety barriers powered by a single power supply have huge potential safety hazards that technical personnel in this industry have not paid attention to. Moreover, the side terminals are used for separate power supply, and the wiring is complicated, which is not conducive to the power-on and installation of the engineering construction. For this reason, a practical, reliable and easy-to-install isolated safety barrier with a redundant bot...

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Abstract

The present invention offers a kind of isolated safety barrier using the design of double sources redundancy power supply. Specifically, the electrical source, accepting double power inputs, connects with the power switch device to form a redundancy power supply circuit. The power switch device will automatically shift to the other power source in normal state if one of the power sources is invalid, therefore the isolated safety barrier can maintain a normal working state. Comparing to the isolated safety barrier using single power source, the present invention largely increases the credibility of isolated safety barriers.

Description

technical field [0001] The invention relates to an isolated safety barrier, in particular to an isolated safety barrier with redundant power supply. Background technique [0002] Intrinsic safety is an explosion-proof method that uses safety barrier technology to limit the electrical energy provided to the field instrument to a safe range that can neither generate sparks sufficient to detonate nor produce a surface temperature sufficient to detonate the instrument, thereby eliminating the source of detonation. There are two levels of intrinsic safety, Ex(ia) and Ex(ib). IEC (International Electrotechnical Commission) stipulates that only Ex(ia) level intrinsically safe explosion-proof technology can be used in zone 0, the most dangerous place. Ex (ia) level intrinsically safe instruments will not explode in circuit components under normal working conditions and when there are two faults in the circuit. In Ex(ia) type circuits, the operating current is limited to less than ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K10/00
Inventor 丁云杨舟王凯孙敏
Owner SUPCON GRP