RU189449U1 - DEVICE FOR CHECKING THE CORRECTION OF ELECTRICAL CONNECTIONS OF AN INDIVIDUAL PROTECTIVE SCREENING SET - Google Patents

Abstract

The utility model relates to the field of labor protection and safety during work. A device for checking the health of electrical connections of an individual protective shunt kit contains a measuring device in the form of a printed circuit board located in a housing with a microcontroller placed on it, to which a power source, a visual indication unit and a voice support unit are connected, the microcontroller being designed to check the integrity of the shunt the circuit of the set, verification of the operability of the measuring device and fixation of the measurement results, the device is equipped with two elec contacts for connecting the conductivity on the one hand to the set and measuring an electrical resistance, on the other hand - to a power source. The technical result consists in reliable determination of the serviceability of the connections of the elements of an individual protective shielding kit, worn on an electrician who is ready to work. 5 hp f-ly, 2 ill.

Description

The utility model relates to the field of labor protection, safety during work, and is designed to check the health of the electrical connections of the personal protection kit for personnel against electric shock, as well as the thermal risks of an electric arc when working both under induced and under operating voltage.

An individual protective shielding kit is designed to protect personnel performing work on high-voltage power lines (HVL) power lines from being hit by induced voltage. The principle of operation of an individual protective shielding kit, for example, Ep-4 (0), is to shunt them the current flowing through the body of a person who has fallen under induced voltage (for example, due to a violation of the grounding circuit). The kit is designed to flow, bypassing the human body, the electrical current of the induced voltage for a time sufficient to take protective measures (for example, restoring the grounding circuit). Heating elements of the kit (about 40 degrees Celsius), while not only does not cause the destruction of the protective elements, but does not cause burns or discomfort to the user. This indicates the ability of the kit to protect personnel not only in contact with the voltage induced by the capacitive path, but also in the case of inductive (electromagnetic) pickup, when the current can reach values of more than 30 A.

All components of the Ep-4 kit (0) are made of electrically conductive materials. The individual elements of the electrically conductive fabric used for the manufacture of shielding clothing must have a reliable connection between them. An individual protective shielding kit has one or two contact leads with clips at the ends for connecting the kit to the ground loop or to the grounded objects of open distribution devices and to the wires of overhead power lines or to the metal parts of the working platform, which is under the potential of the wire. Contact points are located in the front pockets of jackets, overalls. At the end of the contact output is a connecting clip. Loss of contact of at least one element of the set with the rest deprives the set of protective properties.

Before starting work, it is important to check that the electrical connections of the individual protective shield kit are complete and in good condition so as not to endanger the maintenance personnel (electricians).

Known measuring instrument (ohmmeter) for measuring the resistance. The ohmmeter consists of a power source, a measuring mechanism and a variable resistor. An ohmmeter is used to check the health of the electrical connections of an individual protective shielding kit, including a jacket with a hood, semi-overalls, a box, gloves and boots. Individually check the health of the elements of the shielding kit by connecting an ohmmeter to them. If the electrical resistance on the elements of the kit meets the requirements of the standard (see https://allgosts.ru/13/340/gost_12.4.172-2014). then these elements can be used in work, otherwise - not.

However, such testing of the kit is laborious and time consuming.

Known indicator induced voltage (see RF patent on PM No. 173772, IPC G01R 19/00, G08B 21/02, publ. 11.09.2017). The indicator contains a board on an electrically insulating base and two electrically conductive contact nodes mounted on it, which are mounted on the board with the possibility of their contact with clothing items. On the specified board, three LEDs are installed by means of fastening elements, each of which is designed for its own current value, and the electrical connection between the LEDs is parallel. Each of the two common points of electrical contact of the LEDs, formed by their parallel connection, is connected to its contact node, and these electrically conductive contact nodes are fixed on opposite edges of the indicated board. In addition, the contact nodes, LEDs and their electrical connections are galvanically isolated from all edges of the electrically insulating base.

However, this device is not designed to check the electrical connections of the kit before starting work in the workplace, which leads to an increased risk of emergency situations. And this device only shows that the electrician is under induced voltage, but does not protect him from damage from the induced voltage.

The technical problem of the claimed utility model is the creation of a compact portable device capable of checking the operability of the electrical connections of the elements of an individual protective shielding kit immediately before starting work on overhead transmission lines, a contact network and meeting safety conditions.

The technical result consists in reliable determination of the serviceability of the connections of the elements of an individual protective shielding kit, worn on an electrician who is ready to work.

The technical problem is solved by the fact that the device for checking the health of the electrical connections of an individual protective shielding (shunt) kit, according to the decision, contains a measuring device in the form of a printed circuit board located in a housing with a microcontroller to which a power source, a visual indication unit and speech unit, while the measuring instrument is made with the function of checking the integrity of the shunt circuit of the kit, checking the operability of the meter device-locking and the measurement results, the apparatus is provided with two electrically conductive contacts for connecting the meter shunt to a personal protection kit.

The device further comprises a metal base, dielectric and contact rods interconnected, wherein the contact rod is connected to the measuring device, and the metal base is provided with a fastener for accommodating the dielectric rod.

The metal contact bar has a easily detachable connection with a dielectric rod.

The dielectric bar is connected to a metal contact bar by aligning the hole in the contact bar with a button on the dielectric bar.

The dielectric bar is rigidly connected to the metal contact bar.

The dielectric bar is pivotally connected to the metal base and can be rotated relative to each other and locked in a vertical position.

The device further comprises a metallized glove placed on a metal base.

The utility model is illustrated by drawings.

FIG. 1 shows the inventive device; FIG. 2 shows a functional diagram of the measuring device.

Positions in the drawings indicated:

1. - metal base;

2. - dielectric rod;

3. - contact bar;

4. - measuring device;

5. - electrically conductive (metallized) glove;

6. - clamps;

7. - printed circuit board;

8. - unit for checking the operability of the main components of the device

9. - unit for checking the integrity of the shunt circuit of the kit;

10. - speech support unit;

11. - block fixing results;

12. - visual indication unit;

13. - power supply;

14. - unit connecting the device to the kit;

15. - Microcontroller.

A device for checking the health of the electrical connections of an individual protective shielding kit consists of a metal base 1, provided with a fastener for accommodating a dielectric rod 2, made, for example, of fiberglass. The dielectric rod 2 is connected to a metal contact rod 3. There are various options for connecting the rods, such as easily detachable and rigid. A measuring device 4 is connected to the upper part of the contact rod 3. The device has a measuring device connecting unit to the kit containing two conductive contacts with black and red clips. The black clip is connected to the metal base 1 or to the buttons on the front side of the electrically conductive glove 5, which is laid back to the base 1. The red remote clip is designed to be connected to the fabric case.

A variant of the device without the use of rods and base, in this case, the clips are attached to the kit directly.

Electrically conductive glove 5 increases the reliability of the electrical contact of the device with the shoe of an individual protective shielding kit

The measuring device 4 contains a printed circuit board 7, which houses the microcontroller 15. The microcontroller 15 is connected to the power source 13. The input of the microcontroller 15 is connected to the node 14 connecting the measuring device to the kit, which is connected to the contact rod 3. The outputs of the microcontroller 15 are connected:

a) with speech support unit 10 (microcircuit, sound emitter);

b) with a visual indication unit 12 (LEDs, a pointer device);

c) power source.

The microcontroller 15 contains functional programmable blocks test the health of the main components of the device 8; check the integrity of the shunt circuit kit 9; fixing the results 11 (long-term memory of the microcontroller).

The microcontroller 15 is programmed with the ability to verify the operability of the instrument nodes, check the integrity of the shunt circuit of the kit and record the results.

The front panel of the instrument case 4 has a sound emitter, with the help of which the conclusions of the measurement results are explained in words, the control switch device, the readings of which can be in the red or green zone of the scale, as well as two LEDs indicating all stages of the device operation and the power button, for example "Start". On the sides of the housing of the measuring device 4 there are contacts that provide a reliable connection of the shunt circuit of the kit with the measuring circuit of the instrument.

The programmable unit for checking the operability of the main components of the device 8 is designed to test the voice accompaniment units 10, the visual display 12 and the power source 13.

When checking the electrical connections of the kit, the microcontroller 15 generates and sends a signal to the visual indication unit 12 and the voice accompaniment unit 10. The results are recorded in a programmable fixation unit 11.

When testing and checking the correctness of the connection of the elements of the costume, the microcontroller 15 sends a signal to the visual display unit 12 and the green indicator lights up, indicating that the set is ready for operation. In addition, the speech accompaniment unit 10 will inform about this by giving a voice signal that the suit is ready, for example, “THE SUIT IS READY”. Otherwise, a red LED will turn on, indicating that the electrical connections are not complete or broken. This will also be reported by a voice signal, for example, "WORK FORBIDDEN."

The verification procedure consists in measuring the electrical resistance of the connection of all necessary components of the ready-to-work kit immediately before starting work. To check the connection of all parts of the kit, it is sufficient to check the connection (resistance) of the three circuits of the kit by conducting three types of measurements:

Measurement 1: Tapered - any leg on a metal base;

Measure 2: left hand on a contact bar - right foot on a metal base or glove;

Measure 3: Right hand on the contact bar - left foot on a metal base or glove.

The measurement cycle algorithm is as follows:

1. Testing the performance of the LEDs, sound emitter, power supply of the device, switch instrument. When a malfunction is detected, the device is not allowed to be used, measuring 1, recording the results and time of the test and reporting the results of the test with voice and light indication.

2. Testing the performance of the LEDs, sound emitter, power supply of the device, switch instrument. When a malfunction is detected, the device is not allowed to be used, measurement 2, recording the results and the time of the test carried out and reporting the results of the test with voice and light indication.

3. Testing the performance of the LEDs, sound emitter, instrument power, switch instrument. When a malfunction is detected, the device is not allowed to be used, measuring 3, recording the results and time of the test and reporting the results of the test with voice and light indication.

The claimed solution was tested as a device for indicating the readiness of the EP-4 (0) set to work.

The device works as follows.

A user of a clothing set (electrician), dressed in a protective kit, connects the black clip with a metal base or with buttons on the front side of the glove, with the back side of it on the base. Connects the red remote clamp with the contact rod. Cleans dirt from shoes.

The device is ready for operation.

To check the set, the user of the set of clothes measures the resistance in the following sequence:

Measure 1

- installs the right or left shoe on a metal base or a metallized glove;

- connects the red remote clamp with the front part of the box;

- presses the power button, for example, "Start";

- watches as the red and green LEDs blink simultaneously for 3 seconds.

The device makes the necessary measurements and if there are all electrical connections, the green LED will light up indicating that the set is ready for operation. In addition, a voice signal, for example, “COSTUME READY” will inform about it. Otherwise, a red LED will turn on, indicating that the electrical connections are not complete or broken. This will also be reported by a voice signal, for example, "WORK FORBIDDEN."

Measure 2

The user of the clothing set places the left shoe on a metal base or metallic glove;

- is taken with the right hand for the contact bar;

- presses the power button, for example, "Start";

- watches as the red and green LEDs blink simultaneously for 3 seconds.

The device makes the necessary measurements in case of successful completion of the test and if there are all electrical connections, the green LED will light up, indicating that the set is ready for operation. Additionally, it is reported by a voice signal, for example, “COSTUME READY”. Otherwise, a red LED will turn on, indicating that the electrical connections are not complete or broken. This is also reported by a voice signal, for example, "WORK FORBIDDEN."

Measure 3

The user of the clothing set places the right shoe on a metal base or metallic glove;

- is taken with the left hand for the contact bar;

- presses the power button, for example, "Start";

- watches as the red and green LEDs blink simultaneously for 3 seconds.

The device makes the necessary measurements in case of successful completion of the test and if there are all electrical connections, the green LED will light up, indicating that the set is ready for operation. Additionally, it is reported by a voice signal, for example, “COSTUME READY”. Otherwise, a red LED will turn on, indicating that the electrical connections are not complete or broken. This is also reported by a voice signal, for example, "WORK FORBIDDEN."

The principle of operation of the protective kit is to shunt them the current flowing through the human body. The readiness of the protective kit for operation consists in determining the integrity of the shunt circuit. In accordance with the description, for example, of an EP-4 (0) protective set, the resistance of the shunting circuit should not be more than 10 Ohms.

The leakage of an electric current through an individual protective kit, accompanied by an increase in the temperature of the elements of the kit or their electrical connection nodes, is a signal indicating a violation of the rules for the application of basic protective equipment and security measures. In this case, it is necessary to immediately stop work until the causes of the potential difference in the work area and, as a result, the potential difference between the elements of the set are eliminated.

Thus, the developed device prevents the use of a defective protective kit, in particular, Ep-4 (0), if it does not have a reliable connection of elements. The device may be portable.

Claims (6)

1. A device for checking the operability of electrical connections of an individual protective shunt kit, characterized in that it contains a measuring device in the form of a printed circuit board located in a housing with a microcontroller placed on it, to which a power source, a visual indication unit and a speech unit are connected, This microcontroller is made with the function of checking the integrity of the shunt circuit of the set, checking the operability of the measuring device and recording the results measured minutes, the device is provided with two electrically conductive contacts for connecting the one hand to the set and measuring an electrical resistance, on the other hand - to a power source. 2. The device according to claim 1, characterized in that it further comprises a metal base, dielectric and contact rods interconnected, wherein the contact bar is connected to the measuring device, and the metal base is provided with a fastener for accommodating the dielectric rod. 3. The device according to claim 2, characterized in that the metal contact rod has a easily detachable connection with the dielectric rod. 4. The device according to claim 2, characterized in that the dielectric rod is connected to a metal contact rod by aligning the hole in the contact rod with a button on the dielectric rod. 5. The device according to claim 2, characterized in that the dielectric rod is rigidly connected to the metal contact rod. 6. The device according to claim 2, characterized in that the dielectric bar is pivotally connected to the metal base and can be rotated relative to each other and locked in a vertical position.

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