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Devices for warning of pre-fire conditions caused by localized overheating of electrical equipment

A technology of local overheating and electrical equipment, which is applied to fire alarms with electric action, fire alarms with hydraulic/pneumatic action, fire alarms, etc., and can solve problems such as slow heating gas discharge rate

Active Publication Date: 2020-11-06
热力电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] Furthermore, a significant disadvantage of this system is the gas emission rate upon slow heating of the microencapsulated odorants or odorants mixed with waxes or fatty acids

Method used

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  • Devices for warning of pre-fire conditions caused by localized overheating of electrical equipment
  • Devices for warning of pre-fire conditions caused by localized overheating of electrical equipment

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Embodiment Construction

[0055] The technical aim of the present invention is to create an automatic tool for early pre-ignition condition alerting of fires caused by local overheating of electrical equipment, when the heating of wires or electrical contacts exceeds the allowable operating parameters (>100°C), but has not yet reached At levels that are flammable (>250°C), pyrolysis of the material occurs at this level.

[0056] The technical result of the claimed solution is to increase the likelihood of early detection of pre-fire conditions.

[0057] The provided device is made of a polymer thermoset composite with an explosion failure temperature in the range of 80-200°C, the continuous phase of which is formed by a thermoset polymer containing odorants such as sulphur dioxide, low molecular weight mercaptans, bisulfites Alkyl sulfides, dialkyl disulfides, or combinations thereof.

[0058] A feature of the described polymer composites is the use of thermosetting polymers as polymeric materials. U...

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Abstract

The invention relates to a tool for monitoring pre-fire conditions resulting from localized overheating of electrical equipment and aimed at preventing fires caused by electrical wiring failures, in particular wiring device failures. The inventive device for warning of local overheating is made of a polymer composite cross-linked material with an explosion failure temperature in the range of 80-200° C., which contains odorous substances. In a particular embodiment of the invention, said polymer composite is in the form of microcapsules with an odor core dispersed in a binder made of a thermosetting polymer. In other embodiments of the invention, the polymer composite is in the form of a polymer gel comprising cross-linked polymer particles swollen in a solution of the odorant and located in a thermosetting polymer matrix. In other embodiments of the present invention, the polymer composite is in the form of silica gel or zeolite particles on which odorants are adsorbed, said particles being located in a cross-linked polymer matrix. In other embodiments of the invention, the polymer composite is in the form of cross-linked porous polymer particles with closed pores or channels filled with odorants or odorant solutions, the particles being located in a thermosetting polymer matrix . Sulfur dioxide, lower mercaptans, dialkyl sulfides, dialkyl disulfides, combinations or solutions thereof are used as odorants. Hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluorocarbons such as chlorofluorocarbons, perfluoro(ethyl isopropyl ketone), alkanes, simple esters, or combinations thereof can be used as solvents for odorous substances.

Description

technical field [0001] The claimed device relates to a tool for controlling pre-fire conditions caused by local overheating of electrical equipment, which can be used to identify failures of electrical equipment at an early stage and prevent fires caused by faulty wiring. Background technique [0002] To date, more than 20% of all fires have occurred due to the illegal operation of electrical equipment and installations. Fires most often occur in areas of electrical contact. [0003] Generally, fires do not start spontaneously. Wires at junctions prior to this often have long-term failures. At the same time, the amperage does not rise as sharply as in the case of a short circuit, so the electromagnetic release used in modern circuit breakers cannot be used for protection in this case. [0004] Therefore, the resistance increases under poor contact at the socket or switchboard, which is the cause of the temperature increase. The wire deforms due to thermal expansion, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/00
CPCG08B17/04C08J3/126C08K3/34C08K3/36C08K5/37C08K9/10C08K9/12C08L23/0853C08L63/00C08L75/02C08L75/04G08B17/06
Inventor A·V·勒斯夫
Owner 热力电子有限责任公司
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