RU2733762C1 - Protective electrical equipment signalling suit - Google Patents

Abstract

FIELD: individual protection means; footwear.SUBSTANCE: invention relates to labour protection and safety and is intended for individual protection of electricians. Protective signalling suit of electrical personnel comprises electroconductive shoes galvanically connected to each other, electroconductive jacket, electrically conductive trousers or overalls/semi-overalls, electrically conductive gloves, electroconductive helmet cover. At that, on main paths of current flow one or more devices-signalling devices of current flow are connected, which, when current flows through suit elements, deliver audio and/or light signal, thus informing electrician about getting under voltage and necessity to take measures to eliminate this condition.EFFECT: technical result consists in improvement of safety of works carried out by electrical personnel, that is increase in efficiency and reliability of protection of electrician.3 cl, 1 dwg

Description

The invention relates to labor protection and safety precautions for electrical personnel, and in particular to personal protective equipment against electric shock when exposed to operating, induced or step voltage. These hazardous factors affect the personnel servicing high and extra-high voltage electrical installations under operating or induced voltage. Also included are works on high-voltage power lines and railway contact networks, carried out with or without removing voltage.

The closest in technical essence to the claimed invention is an individual protective shunt set Ep-4 (0) "Tesla", containing electrically interconnected electrically conductive shoes, an electrically conductive jacket, electrically conductive trousers or overalls / semi-overall, electrically conductive gloves, an electrically conductive pad [1] ... The kit shunts the human body, ensuring the flow of currents of different nature. All elements of the kit are made of electrically conductive materials and are interconnected by channels of increased conductivity and electrically conductive contact leads.

This protective suit was chosen as a prototype.

The technical problem of the present invention is to eliminate the following disadvantages of the prototype:

- the inability of the suit to signal the presence of danger, that is, the electrician gets under the operating, induced or step voltage;

- in the source [1] it is indicated that when an electrician gets under voltage and, accordingly, when current flows through the suit, the elements of clothing may heat up. Moreover, as real operation shows, this heating can be significant, especially in the places where the live parts touch, since in these places the current density is high. There have been cases of burns of the skin of the palms with the late detection of a voltage hit, that is, when the current significantly heated the elements of electrically conductive gloves at the place of holding the current-carrying part.

The solution to the technical problem is achieved by the fact that in a protective signaling suit of electrical personnel, containing electrically conductive shoes, electrically conductive jacket, electrically conductive trousers or overalls / half overalls, electrically conductive gloves, electrically conductive collar, according to the invention, on the main paths of current flow, one or more devices, signaling the flow of current, which, when current flows through the elements of the suit, give a sound and / or light signal. Complementary embodiments correspond to the dependent claims.

Due to the shunting properties of the suit, the worker remains protected from direct electric shock.

When implementing the claimed invention, the electric current flowing through the elements of the suit and arising when the electrician gets under the operating or induced voltage is a diagnostic sign of the early detection of this dangerous condition, that is, the electrician's touch to the live parts.

The signaling device creates an audible and / or light signal when current flows through it and thereby indicates to the electrician that it is in a dangerous state. Any technical means capable of converting electric current into a sound and / or light signal can be used as signaling devices. At the same time, devices that convert electrical quantities into sound and light have a significantly shorter response time compared to the time it takes for the elements of the suit to heat up due to heat losses when current flows through them.

The use of signaling devices in a protective signaling suit for electrical personnel, reporting on hitting the operating, induced or step voltage, constitutes the novelty and essential differences of the claimed invention.

In the future, the invention is illustrated by an example of its specific implementation with reference to the attached drawing, in which: Figure 1 shows a structural and schematic general view of a protective signaling suit of electrical personnel, which shows: 1 - electrically conductive shoes, 2 - electrically conductive trousers or overalls / semi-overalls, 3 - electrically conductive jacket, 4 - electrically conductive gloves, 5 - electrically conductive nakasnik, C1, C2, C3, C4 and C5 - current flow signaling devices. The electrical connections of the elements of the suit are shown by bold black lines with bold knot points. Further, when mentioning the elements of the suit, for brevity, the word "electrically conductive" will in some cases be omitted.

The principle of operation of a protective signaling suit of electrical personnel is as follows.

When the electrician gets under the operating or induced voltage between the points of the suit that are at different potentials, an electric current begins to flow through the elements of the suit. The path of the current can be different depending on which points fall under different potentials. In this case, one or more signaling devices, through which the current flows, will give an audible and / or light signal informing the electrician about voltage being hit.

Let's consider the main paths of current flow.

When different potentials are closed on the sleeve 5 and any point of the jacket 3, the current will flow along the path: "the sleeve 5 - the device-signaling device C5 - jacket 3" or the so-called head - body path. In this case, the signaling device C5 will give a response about falling under voltage.

When closure of different potentials on the sleeve 5 and the shoe 1, the current will flow along the path: "the sleeve 5 - the signaling device C5 - jacket 3 - the signaling device C2 - trousers 2 - the signaling device C1 - shoes 1" or the so-called path head - legs. At the same time, signaling devices C1, C2, C5 will give a response about falling under voltage.

The C1 signaling device is installed only on one of the legs, since one of it is enough to determine the mode of falling under voltage when the current flows along the main paths. The installation of a similar alarm device on the second leg can generally be performed, but in this example it is considered redundant.

When different potentials are closed by the sleeve 5 and one of the gloves 4, the current will flow along the path: "the sleeve 5 - the signaling device C5 - the jacket 3 - the signaling device C3 or the signaling device C4 - the right glove 4 or the left glove 4" or so called the head-hand path. At the same time, signaling devices C5 and C3 or C4 will give a response about falling under voltage.

When different potentials are closed by left glove 4 and right glove 4, the current will flow along the path: "left glove 4 - signaling device C4 - jacket 3 - signaling device C3 - right glove 4" or the so-called hand - hand path. At the same time, signaling devices C3 and C4 will give a response about falling under voltage.

When the different potentials of any of the gloves 4 and shoes 1 are closed, the current will flow along the path: "glove 4 - signaling device C3 or signaling device C4 - jacket 3 - signaling device C2 - trousers 2 - signaling device C1 - shoes 1 "Or the so-called hand - feet path. In this case, the signaling devices C1, C2 and C3 or C4 will give a response about falling under voltage.

When different potentials are closed by the left shoe of the shoe 1 and the right shoe of the shoe 1, the current will flow along the path: "the left shoe of the shoe 1 - trousers 2 - the signaling device C1 - the right shoe of the shoe 1" or the so-called leg - leg path. This case is also typical for getting under step voltage. In this case, the C1 signaling device will give a response about falling under voltage.

Other, including more complex, combinations of potential closure and, accordingly, the paths of current flow through the elements of the suit are possible, however, when connecting the signaling devices in the manner shown in figure 1, at least one signaling device will give an audible and / or light signal about the electrician getting under voltage with the main types of touching live parts.

The development of technology, including digital, makes it possible, instead of several signaling devices located in the places of galvanic connection of the elements of the suit, to use one signaling device that generates a sound and / or light signal and receives information about the flow of current through electrical connectors and having connections to them.

The signal generated by the signaling device informs the electrician about the need to take measures to eliminate the condition of falling under the induced voltage. These measures can be taken to avoid excessive heating of the elements of the suit.

In comparison with the prototype, the efficiency and reliability of protection of the electrician from being energized and from the consequences caused by the electric current flowing through the elements of the suit has been increased, that is, in general, the safety of the work of electrical personnel is increased.

The proposed invention is carried out using known technical means.

Literature

1. Individual protective kit Ep-4 (0) "Tesla" [Electronic resource]. - Access mode: http://energoform.ru/tesla.html

Claims (3)

1. Protective signaling suit of electrical personnel, containing electrically conductive shoes, electrically conductive jacket, electrically conductive trousers or overalls / semi-overalls, electrically conductive gloves, electrically conductive collar, characterized in that one or more current flow signaling devices are switched on on the main paths of current flow , which, when current flows through the elements of the suit, give a sound and / or light signal. 2. A protective signaling suit according to claim 1, in which one or more signaling devices are installed on the following paths of current flow: left hand - right hand, head - body, head - legs, leg - leg, left hand - legs, right hand - legs. 3. Protective signaling suit according to claim 1 or 2, in which one or more signaling devices are installed in the places of electrical connections of the suit elements among themselves.

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