CN103474876B - 10 kilovolts of electric power complete set of equipments anti-misoperation lockings - Google Patents

Abstract

The invention relates to an anti-misoperation locking of 10 kV power complete equipment, which is composed of a metering cabinet and a power receiving cabinet. The operating mechanism of the switch cooperates with the lower door of the metering cabinet through a mechanical linkage lock; a micro switch is installed inside the door of the metering cabinet, the power signal of the micro switch is connected to the voltage transformer in the power receiving cabinet, and the micro switch is connected to the voltage transformer installed in the power receiving cabinet. The sound and light alarm device above the incoming line cabinet of the cabinet is connected electromagnetically. It has the functions of mechanical interlock and electromagnetic alarm, which realizes the double insurance of personal error prevention of high-voltage metering device, and effectively avoids personal electric shock casualty accidents.

Description

Anti-misoperation locking of 10 kV power complete equipment

technical field

The invention relates to an anti-misoperation locking of 10 kilovolt electric complete sets of equipment, which is used for 10 kilovolt electric complete sets of equipment.

Background technique

The on-site installation, inspection and maintenance of 10 kV high-voltage electric energy metering devices has the characteristics of small and scattered work sites, multiple points and wide areas, and the specific working time of a single site is relatively short. The electrician of the customer is responsible for operating the high-voltage equipment and implementing safety measures. There are some safety hazards in field work. The health level of user equipment varies in thousands of ways under the operating state, and the degree of emphasis on management and the quality of electricians are uneven, which makes it difficult for users to implement the "two votes" system in safety management, resulting in organizational measures to ensure the safety of electric energy metering on-site operations It is difficult to fully implement; in the work, it is found that the 10 kV high-voltage equipment of electricity customers generally has imperfect safety protection facilities, and the incoming line cabinets of many high-voltage customers only use artificial padlock protection methods. Due to disrepair and poor management, There are many cases where the locks are incomplete or not easy to use. If the staff lacks sufficient safety awareness and fails to perform the necessary safety measures, it is easy to enter the live compartment by mistake, causing personal injury and death accidents. According to statistics, among the safety accidents of the State Grid Corporation of China in the past two years, electric energy metering and high-voltage customer electricity inspection professionals accounted for a high proportion of personal electric shock casualties, and it is showing an upward trend.

The anti-misoperation locking device with the "five preventions" function is an important technical measure to ensure the safety of people and equipment, and to prevent misuse and accidental contact with live equipment. The anti-misoperation locking device is mainly based on technical means, and it has become the mainstream of power safety management to prevent human misoperation and accidental contact with live equipment. In the part of the electric energy metering device, there is no anti-misoperation locking device between the high-voltage metering cabinet and the load switch of the incoming line, which leads to the increase of the probability of people accidentally entering the electrified interval, accidentally touching and accidentally touching the electrified equipment, and easily causing personal electric shock casualties ACCIDENT.

Contents of the invention

The purpose of the present invention is to provide an anti-misoperation locking of 10 kV power complete sets of equipment, which has the functions of mechanical interlock and electromagnetic alarm, and realizes the double insurance of personal error prevention of high-voltage metering device, and effectively avoids personal electric shock casualty accidents.

The technical solution of the present invention is realized in the following way: the anti-misoperation locking of 10 kV power complete equipment is composed of a metering cabinet and a power receiving cabinet, and is characterized in that a mechanical linkage lock is installed between the metering cabinet door and the isolating switch of the power receiving cabinet , the operating mechanism of the isolating switch of the power receiving cabinet cooperates with the lower door of the metering cabinet through a mechanical linkage lock; a micro switch is installed inside the door of the metering cabinet, and the power signal of the micro switch is connected to the voltage transformer in the power receiving cabinet. It is electromagnetically connected with the sound and light alarm device installed above the incoming cabinet of the power receiving cabinet.

The mechanical linkage lock is composed of an operation panel, an isolation operation hole, a connecting rod, an interlock lock lever, an operation hole baffle mechanism, a door buffer top plate, a linkage crank arm, a return spring, and a rotating shaft; There is an isolation operation hole on the cabinet door and the operation panel. The door buffer top plate is fixed on the metering cabinet to cooperate with the lower end of the linkage crank arm. The upper end of the linkage crank arm is linked with the interlock lock lever. The interlocking locking rod is supported on the operation hole baffle mechanism arranged in the isolation operation hole; the interlocking locking rod is provided with a spring, and the rotating shaft is connected with the interlocking locking rod and fixed on the receiving cabinet.

The positive effect of the invention is to ensure the personal safety of on-site operation, realize the goal of intrinsic safety of electric energy metering on-site work, and effectively avoid personal electric shock casualty accidents.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural diagram of the mechanical linkage lock of the present invention.

Fig. 3 is a partial structural diagram of the operation panel of the present invention.

Fig. 4 is a partial structural diagram of the operating hole baffle mechanism of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings: As shown in Figure 1, the anti-misoperation locking of 10 kV power complete equipment is composed of a metering cabinet and a power receiving cabinet, and is characterized in that: the metering cabinet door 1 and the power receiving cabinet 2 A mechanical linkage lock 3 is installed between the isolating switches, and the operating mechanism of the isolating switch of the receiving cabinet 2 cooperates with the lower door of the metering cabinet through the mechanical linkage lock 3; a micro switch is installed on the inside of the metering cabinet door 1, and the power signal of the micro switch is connected to The voltage transformer in the power receiving cabinet 2 is connected, and the micro switch is connected with the sound and light alarm device installed above the incoming line cabinet of the power receiving cabinet 2 in an electromagnetic manner.

As shown in Figures 2, 3, and 4, the mechanical interlock lock 3 is composed of an operation panel 3-1, an isolation operation hole 3-2, a connecting rod 3-3, an interlocking lock lever 3-4, and an operation hole baffle mechanism. 3-5, door buffer top plate 3-6, linkage crank arm 3-7, return spring 3-8, rotating shaft 3-9; the operation panel 3-1 is fixed on the cabinet door of the power receiving cabinet 2, and the operation panel There is an isolation operation hole 3-2 on the 3-1, and the door buffer top plate 3-6 is fixed on the metering cabinet 1 to cooperate with the lower end of the linkage crutch arm 3-7, and the upper end of the linkage crutch arm 3-7 is linked with the interlocking lock bar. The rod 3-3 is fixed on the interlocking locking rod 3-4, and the interlocking locking rod 3-4 is supported on the operation hole baffle mechanism 3-5 arranged in the isolation operation hole 3-2; the interlocking locking rod 3- 4 is provided with a spring 3-10, and the rotating shaft 3-9 is connected with the interlocking lock bar 3-4 and fixed on the receiving cabinet 2.

When the metering cabinet 1 is opened, the door buffer top plate 3-6 promotes the interlocking crank arm 3-4, and the linkage crank arm 3-4 rotates counterclockwise. The upper end of the linkage crank arm 3-7 is linked with the interlock lock lever 3-4. Due to the door closing action, the linkage lever arm 3-7 rotates, and the return spring 3-8 works to make the interlock lock lever 3-4 rotate clockwise. At this moment, the interlocking lock bar 3-4 unlocks the operating hole baffle plate mechanism 3-5, and the operating hole baffle plate mechanism 3-5 is opened from the isolation operating hole 3-2, and the isolating switch can be operated this moment. Otherwise, the door is unlatched, and the operating hole baffle plate mechanism 3-5 is locked, and the isolating switch cannot be operated. In a word, the isolating switch can be operated only when the metering cabinet 1 is closed, so as to ensure the safety of the operators.

Its working process is as follows:

1. The isolating switch of the power receiving cabinet is mechanically interlocked with the door of the metering cabinet.

When the isolating switch is in the closing position, the lower door of metering cabinet 1 cannot be opened; when the isolating switch is in the opening position, the lower door of metering cabinet 1 can be opened. The specific interlocking method of the isolating switch of the power receiving cabinet 2 and the metering cabinet 1 door is as follows:

When the lower door of the metering cabinet 1 is in the open state, the interlocking lock lever 3-4 is reset, and the door of the metering cabinet 1 locks the isolation operation hole 3-2 of the isolating switch of the receiving cabinet through the interlocking lock lever 3-4. Operate the isolating switch of the receiving cabinet.

When the lower door of the metering cabinet 1 was in the closed state, the isolating operation hole 3-2 of the isolating switch of the power receiving cabinet 2 was opened by the interlocking lock bar 3-4, and the isolating switch could be operated at this moment.

When the isolating switch of the power receiving cabinet 2 is in the closed state (at this time, the metering cabinet is a charged interval), the interlocking lock lever 3-41 is pressed down to lock the door of the metering cabinet, so that the door of the metering cabinet 1 cannot be opened to prevent the operator from accidentally Into the electrified interval; when the isolating switch of the power receiving cabinet is in the separated state, the door of the metering cabinet 1 can be opened.

2. Electromagnetic anti-misalarm function.

In order to ensure the personal safety of the on-site operators of electric energy measurement, on the basis of setting the mechanical linkage lock 3 between the metering cabinet door and the power receiving cabinet isolation switch, another layer of protection - electromagnetic lock is added, that is, an electromagnetic lock is installed inside the metering cabinet door. The micro switch (the power signal of which is taken from the voltage transformer in the power receiving cabinet) is electromagnetically connected to the sound and light alarm device installed above the incoming cabinet. When the power receiving cabinet and the metering cabinet are charged, the metering The mechanical interlocking function of the cabinet, if you try to open the door of the metering cabinet, the micro switch will activate the sound and light alarm system to remind the operator that the equipment is live and avoid entering the charged interval by mistake.

Claims (1)

1. The anti-misoperation locking of 1.10 kilovolts of electric power complete set of equipments, become with powered group by metering cabinet, it is characterized in that: between metering cabinet door and powered cabinet isolating switch, install mechanical blocking lock, the operating mechanism of powered cabinet isolating switch is coordinated with metering cabinet Xiamen by mechanical linkage lock; Install a sensitive switch inside metering cabinet door, the power supply signal of sensitive switch is connected with the voltage transformer in powered cabinet, and sensitive switch is connected with electromagnetic mode with the acoustic-optic alarm above the incoming line cabinet being arranged on powered cabinet; Wherein mechanical linkage lock is made up of guidance panel, isolated operation hole, connecting rod, interlocking locking bar, handle hole baffle mechanism, door buffering top board, interlock connecting lever, back-moving spring, rotating shaft; Wherein guidance panel is fixed on the cabinet door of powered cabinet, guidance panel has isolated operation hole, door buffering top board is fixed on metering cabinet and coordinates with interlock connecting lever lower end, interlock connecting lever upper end links with interlocking locking bar, connecting rod is fixed on interlocking locking bar, and interlocking locking bar withstands on the handle hole baffle mechanism that is arranged in isolated operation hole; Interlocking locking bar is provided with spring, and rotating shaft is connected with interlocking locking bar and is fixed on cashier's office in a shop powered.