RELATED APPLICATIONS

The present invention is a Nonprovisional Application under 35 USC 111(a), claiming priority to Serial No. CN 201910976695.X, filed on 15 Oct. 2019, the entirety of which is incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to the field of sprays for external insulation of electrical equipment, in particular to a visual insulating spray lance for live working.

BACKGROUND

With the development of economy, there are more unknown pollution sources. For example, original level-I or level-II pollution is serious due to human factors such as building of cement plants or chemical plants, demolition, road construction, or the like. As a result, the antifouling property is greatly reduced, and pollution flashover is extremely likely to occur especially under special weather conditions such as humid atmospheres, heavy fogs, dewing, drizzling. Room temperature vulcanizing (RTV) silicone coatings as anti-pollution flashover coatings frequently used by power sectors have excellent hydrophobicity and migration of hydrophobicity and can effectively reduce the probability of the pollution flashover occurring on electrical equipment when sprayed on the surfaces of insulators. Most existing anti-pollution flashover coatings for the electrical equipment are sprayed during power cuts. However, with the development of society, requirements on reliability of power supply are increasingly high, and power-off maintenance is increasingly unfeasible for the power sectors. Especially once a key station is off, there are many adverse consequences. Different sprays may be simultaneously performed within precious power-off time due to limited time and heavy tasks, in this case, different operation will be influenced mutually, and insufficient spraying thicknesses or missing sprays are inevitable in the spraying process of RTV, resulting in poor spraying effects. An RTV spraying technology for live working as an emerging technology can be used to spray anti-pollution flashover coatings during normal operation of the equipment without being limited by the power-off time, thus effectively avoiding the conflict between economic benefits of the power supply and safe operation of the equipment. Due to the limitation of a current detection technology, sprays of the RTV on the power-on equipment cannot be viewed at the vicinity of the power-on equipment, and common electrical equipment is complicated in structure, in this case, dead angles appear and cannot be viewed on the ground. Consequentially, nonuniform spraying thicknesses and missing sprays are caused, operation units and owner units cannot control spray qualities, and the sprays depend on experience of operators to a greater extent. In view of this, it is an emergency to develop a spray device for spraying power-on electrical equipment to realize external insulation of the electrical equipment, which can achieve real-time local monitoring on the spray qualities as well as remote data sharing.

SUMMARY

The objective of the present invention is to overcome the defects of the prior art by providing a visual insulating spray lance for live working, which can effectively solve the problems that sprays on electrical equipment cannot be viewed in real time and the spray quality is not ideal.

To achieve the above objective, the present invention adopts the following technical solution: a visual insulating spray lance for live working includes a spray nozzle and an operating rod, where the operating rod with a top opening and a bottom opening is hollow, a liquid guide tube and an air tube in the hollow operating rod stretch out of two ends of the operating rod and have outlet ends stretching out of the upper end of the operating rod, a connecting tube inserted into the upper end of the operating rod is communicated with an inlet of the spray nozzle, an upward connecting rod is hinged to the upper portion of the operating rod through a first fastener and has an upper end fixedly provided with a video optical transceiver, a display is fixedly arranged on the lower portion of the operating rod through a second fastener, an optical fiber is arranged in an internal cavity of the connecting rod and an optical fiber tube in an internal cavity of the operating rod, and the video optical transceiver is connected to the display through the optical fiber; and the display includes a shell and an internal circuit including an optical receiver, a chip for a video signal processor, a power divider, a display screen, and a 4G communication module, where the optical fiber is connected to the optical receiver via a fiber channel (FC) interface, the chip for a video signal processor has an input terminal connected to a signal output terminal of the optical receiver as well as an output terminal connected to an input terminal of the power divider, two output interfaces of the power divider are respectively connected to an interface of the display screen as well as an RS232 interface of the 4G communication module, a battery is connected to the optical receiver, the chip for a video signal processor, the power divider, the display screen, a power terminal of the 4G communication module, and a power terminal of a global positioning system (GPS) module, and a charging port connected to the battery is formed in the shell.

The present invention is simple in structure, novel and unique in design, convenient to operate, can achieve real-time local monitoring and remote monitoring on the spraying situation of the electrical equipment, effectively solves the problems that electrical equipment is required to be power-off when sprayed with RTV silicone and the spray quality is not ideal, thus being innovative compared with spray lances for electrical equipment and having remarkable social and economic benefits.

