Li Xiang Xu Xiuhua 2 (Xuzhou Mining and Labor Group Co., Ltd. Qishan Coal Mine, Xuzhou, Jiangsu 221132, Xuzhou Mining and Labor Group Co., Ltd. Technology Center, Xuzhou, Jiangsu 221006), developed a smart sound and light warning board with independent intellectual property rights to solve After the power switch cabinet is powered off during maintenance, other personnel mistakenly send power to the electric operator to cause injury. The warning sign can also be used in other high-voltage dangers or where warnings are required, simply by changing the voice content. It is an intelligent electrician tool with dual sound and light warning function. It has high sensitivity and can completely eliminate the occurrence of false power transmission. The structure is simple, the effect is good, the safety is high, and the use is convenient.
1Proposal of the problem When the coal mine is performing electrical equipment, circuit maintenance, etc., the electrical switchgear must be powered off and then overhauled. In order to prevent someone from sending power by mistake, it is necessary to hang the warning sign "No one is allowed to send power" next to the switchgear, and the operator has the right to remove the card. In order to ensure that nothing is lost, it is necessary to set up a special person to prevent accidents caused by electric shocks caused by other personnel. Hanging the power-off card and arranging the special person care can not completely prevent the accidental power transmission accident. If the power is sent incorrectly, it will cause serious harm to the working electrical workers.
The intelligent sound and light warning board of the electric board uses the dual warning of voice and light, which can fundamentally prevent personnel from entering the board and minimize the occurrence of false power transmission.
2Electric plate intelligent sound and light warning sign structure and working principle 2.1 Structure composed of electric board intelligent sound and light warning sign by infrared detection sensor, control circuit, voice circuit, power amplifier output circuit, speaker, LED light, solid battery, power switch, LED Colorful color lights and other components. Each part is set on the left side of the front side of the rectangular box. There is a set of LED lights on the back of the words “There is no work to be blockedâ€. After power-on, the lights are more clear and conspicuous. The LED side of the front side of the box is equipped with LED colorful color lights, infrared detection sensors and speakers. The side of the box stone is the four corners on the back of the charger jack box. There is a power switch in the middle of the back of the magnet (see). When using the site, the back of the warning sign should be close to the surface of the power-off switchgear. P can be fixed on the switchgear by magnets. The internal power supply automatically turns on the warning sign and is in working condition.
Device jack; 5 - infrared detection sensor; 6 - speaker warning sign outline structure 2.2 working principle working principle, the sensor can detect the infrared radiation of the human body through non-contact form, and convert it into voltage Signal When the person passes the area covered by the infrared detecting sensor, the infrared heat released by the human body is detected, and the detected infrared heat is converted into an electrical signal and input to the control execution circuit. The voice control circuit and the light control circuit are triggered by the execution circuit. At this time, the speaker emits a warning language such as "someone works forbidden to explain" and the led light is turned on and the "some people work forbidden to explain" words, and the ED colorful color change lamp changes the color voice and The light plays a dual warning role.
The warning sign uses a rechargeable solid battery as the power source. After the solid battery is exhausted, the charging wire can be connected to the charging jack and the adaptability analysis of the 220V power supply fully mechanized caving face. Li Jinhuai, Wang Zhichun (Guotou Henan Xinneng Development Co., Ltd., Zhengzhou, Henan 451191, China) According to the analysis, it is believed that the 11051 working face of Wangxingzhuang Coal Mine adopts ZYF4000/17/28 type shielded caving coal hydraulic support to adapt to the on-site geological conditions, the roof control effect is good, and the three-machine size is reasonable.
1 Work surface situation overview Wang Xingzhuang Coal Mine 11051 work face mining second! The coal coal thickness is 1. 7~11.35m and the average 5.2m inclination angle is 14~24. The working face adopts the direction of the 铪 铪 铪 mining coal mining machine height 2.4m surface coal height average 2.15m working face direct face is mudstone fracture, the average thickness of 1m basic top tumbling sandstone rushing slender quartz sandstone has oblique layering. The coal floor is a sandy mudstone containing pyrite nodules and seeing muscovite fragments.
Frame, center distance 1.5m<1 for resistance 4000kN;: frame manual operation support strength 0.702 MPa to base plate specific pressure 1.5MPa adaptation dip raspberry 25 shearer model MG200/500-AWD double boring traction drum diameter 1.6m The depth of 0.6m injection capacity 2 mine pressure observation program 11051 fully mechanized caving face research content mainly includes the working resistance of the bracket and the observation of the shrinkage of the living column. According to the observation results, the law of the top surface of the working face and the support of the working face of the working pressure are assisted and charged.
2.3 Main technical parameters Working voltage range / V sensing angle / sensing distance / m detecting angle / (.) Standby time / h view, easy to carry and voice and light prompt effect is obvious, effective DC4.5 ~ 20 can play a role in preventing construction workers The role of misoperation. At present, the warning 2 (can be adjusted according to needs) 4 Conclusion Working environment without corrosive gas, no significant vibration and impact in the case of the whole machine weight / g about 500 3 application effect board intelligent sound and light warning sign is a portable safety device. In June 2010, it was first tested at the Qishan Coal Mine Downhole Substation, as an alarm device for preventing power failure after power failure. The trial situation shows that the device is reliable, sensitive, and effective. It has the characteristics of practicability and prisonability.
At the end of 2010, the power supply department of the mining group launched the "anti-electric shock, anti-air fall" activity, and once purchased 45 warning signs for the Liuxin 110 electric board. The intelligent sound and light warning sign is a small portable safety device that is simple to use and easy to use. The rate is low, and the warning effect is obviously a new type of electrician tool for electrical workers in industrial and mining enterprises. It has changed the situation of hanging warning signs or engraving personnel in front of electrical switchgears for many years, which can effectively improve work efficiency and work quality, and has a wide range of ir use. value.
He is a mechanical and electrical engineering major at China University of Mining and Technology, and an engineer at Qishan Coal Mine of Xuzhou Mining Group Co., Ltd.
Spring prevention of kV regional substation and various mine substation of Xu Mining Group
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