CN114487902A - An underground far-point leakage test system for coal mines - Google Patents

Abstract

The invention discloses a far-point electric leakage test system in a coal mine, which comprises a wood board, a fluorescent lamp, an illumination comprehensive protector, an illuminated comprehensive protector, a round leather line, a four-core round leather line and an illumination circuit, wherein an iron sheet box is hung on the wood board, a button is placed in the iron sheet box, the farthest end of the illumination circuit is provided with a grounding electrode and a tee joint, a first horn mouth, a second horn mouth and a third horn mouth are arranged in the tee joint, the first horn mouth is connected with the fluorescent lamp at the farthest end through the round leather line, the second horn mouth is connected with the grounding electrode through the round leather line, and the third horn mouth is connected with the button through the round leather line. According to the invention, a tester does not need to hang a power failure card from the comprehensive protection place to be tested each time, then goes to the test place to perform test operation, then returns to the comprehensive protection place to supply power and runs back and forth repeatedly, and after improvement, the tester directly presses the button switch to perform the test, so that the labor intensity of workers is greatly reduced, the test time is greatly shortened, and the test efficiency is improved.

Description

An underground far-point leakage test system for coal mines

technical field

The invention relates to the field of electric leakage test systems, in particular to a remote point electric leakage test system in a coal mine.

Background technique

The underground system of coal mines is relatively complex, with many roadways and long battle lines, so there are many comprehensive lighting protection applications. There are two main problems in the far-point leakage test:

1. Since the farthest end of the comprehensive lighting insurance generally only has electrical terminal equipment without starters or other switches, it is very difficult to test the leakage current at the far point of the comprehensive lighting insurance, and it is not even possible to do the test in some places, which is also very time-consuming. The far-point leakage test of the feed switch is much more difficult.

2. Due to the large number of lighting comprehensive protection in use, and the far-point leakage test of each comprehensive lighting is very long, it takes up a lot of time for the electrician. Normally, the far-point leakage test time of a lighting comprehensive protection complete is about a certain extent. Affects the explosion-proof inspection time in the mining area.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the disadvantages of the large number of comprehensive lighting protection in the prior art, and the long-distance leakage test of each comprehensive protection at the same time, which takes up a lot of time of the electrician, and proposes a coal mine underground Remote leakage test system.

In order to achieve the above object, the present invention adopts the following technical solutions:

An underground far-point leakage test system in a coal mine, comprising a wooden board, a fluorescent lamp, a comprehensive lighting protection, an illuminated comprehensive protection, a round leather wire, a four-core round leather wire and a lighting circuit. A button is placed inside, and the farthest end of the lighting circuit is provided with a ground electrode and a tee, and the tee is provided with a first horn, a second horn and a third horn, and the first horn passes through The round wire is connected to the farthest fluorescent lamp, the second horn is connected to the ground electrode through the round wire, and the third horn is connected to the button through the round wire.

Preferably, a protection door is provided on the iron box, a locking piece is installed on both the protection door and the iron box, and a safety lock is installed on the two locking pieces.

Preferably, a resistance is connected inside the tee, and the resistance is 2000 ohms.

Preferably, the model of the button is BZA1-5/127-2.

Preferably, the round leather wire between the third trumpet mouth and the button is composed of two four-core round leather wires.

Preferably, the fluorescent lamp, the lighting comprehensive protection and the illuminated comprehensive protection are connected.

Preferably, the resistor is located between the ground-side round skin wire and the ground electrode.

The beneficial effects of the present invention are:

1. The present invention does not require the tester to hang a power outage sign from the tested comprehensive insurance place every time, then go to the test site to carry out the test operation, then go back to the comprehensive insurance place to send electricity, and run back and forth repeatedly. After improvement, simply press the button switch to test, Greatly reduces the labor intensity of workers.

2. In the present invention, the above-mentioned test device has been installed when the most remote power supply equipment of the comprehensive lighting protection is installed, so each test only needs to press the button to test, which saves a lot of wiring time and greatly shortens the test time. Improved test efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of an underground far-point leakage test system in a coal mine proposed by the present invention.

FIG. 2 is an enlarged structural schematic diagram of the position A of a far-point leakage test system in a coal mine proposed by the present invention.

Labels in the picture: 1 wooden board, 2 button, 3 iron box, 4 fluorescent lamp, 5 lighting comprehensive protection, 6 round leather wire, 7 illuminated comprehensive protection, 8 grounding electrode, 9 four-core round leather wire, 10 safety lock, 11 resistance , 12 tee.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Referring to Figure 1-2, an underground far-point leakage test system in a coal mine includes a wooden board 1, a fluorescent lamp 4, a comprehensive lighting protection 5, an illuminated comprehensive protection 7, a round leather wire 6, a four-core round leather wire 9 and a lighting circuit. A metal box 3 is hung on the 1, and a button 2 is placed in the iron box 3. The farthest end of the lighting circuit is provided with a grounding electrode 8 and a tee 12. At the farthest point of the lighting circuit, a standard grounding electrode 8 is set for For leakage test, stop the switch load side power of the tested lighting comprehensive protection 7, and hang the power outage sign;

The tee 12 is provided with a first horn mouth, a second horn mouth and a third horn mouth, the first horn mouth is connected to the farthest fluorescent lamp 4 through the round leather wire 6, and the second horn mouth is connected to the ground through the round leather wire 6 The pole 8 is connected, the third trumpet is connected with the button 2 through the round leather wire 6, the metal box 3 is provided with a protection door, the protection door and the metal box 3 are both installed with locking pieces, and the two locking pieces are installed with safety locks 10. Lock the iron box 3 on which the button 2 is placed through the safety lock 10 to prevent other people passing by from jogging the switch of the button 2 at will;

A resistor 11 is connected in the tee 12, and the resistance is 2000 ohms. The model of the button 2 is BZA1-5/127-2. The round leather wire 6 between the third trumpet mouth and the button 2 is two four-core round leather wires 9 It consists of fluorescent lamp 4, lighting comprehensive protection 5 and illuminated comprehensive protection 7, and resistor 11 is located between the round leather wire 6 on the grounding side and the grounding electrode 8, and the 2kΩ experimental resistor 11 is connected to the tee 12 and connected to the ground. Between the side round leather wire 6 and the binding post, after everything is ready, turn on the switch of the tested lighting comprehensive protection 7, and close the test button 2 switch. The tested lighting comprehensive protection 7 trips, that is, the test is successful, otherwise, the remote test If the jump does not work, you should find the reason and deal with it in time.

Working principle: In the present invention, when in use, install a BZA1-5/127-2 button switch (voltage level 127V) at the farthest point of the lighting line, and then place the button 2 in the iron box 3, and then put the The iron box 3 is locked by installing the lock 10, and is hung on the top wall of the coal mine, and the position is suitable for personnel to operate;

At the farthest point of the lighting line, set up a standard grounding electrode 8 for leakage test. Shut off the switch load side of the tested lighting comprehensive protection 7, hang the power outage sign, and install a BHD-40 at the farthest point of the lighting line. /660 type small tee 12, the bell mouth 1 is connected to the farthest fluorescent lamp 4 through the round leather wire 6, the horn mouth 2 is connected to the ground electrode 8 through the round leather wire 6, and the horn mouth 3 is connected to the button 2 through the round leather wire 6;

Connect the 2kΩ experimental resistor 11 to the tee 12, and connect it between the round leather wire 6 and the terminal on the ground side. After everything is ready, turn on the switch of the tested lighting comprehensive protection 7, and the test button 2 switch. The tested lighting comprehensive protection 7 trips, that is, the test is successful. On the contrary, if the remote point test does not work, the reason should be found and dealt with in time. After the test, the iron box 3 where the button 2 is placed is locked by the safety lock 10 to prevent passing other people. Personnel click the button 2 switch at will.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (7)

1. An underground far-point leakage test system in a coal mine is characterized in that, comprising a wooden board (1), a fluorescent lamp (4), a comprehensive lighting protection (5), a comprehensive lighting protection (7), a round leather wire (6), four A core round leather wire (9) and a lighting circuit, an iron box (3) is hung on the wooden board (1), a button (2) is placed in the iron box (3), and the farthest end of the lighting circuit is provided with a button (2). There is a ground electrode (8) and a tee (12), the tee (12) is provided with a first bell mouth, a second bell mouth and a third bell mouth, and the first bell mouth passes through the round leather wire (6). ) is connected to the farthest fluorescent lamp (4), the second trumpet is connected to the ground electrode (8) through a rounded wire (6), and the third horn is connected to a button through a rounded wire (6). (2) Connection. 2. A kind of underground far-point leakage test system of coal mine according to claim 1, is characterized in that, described iron box (3) is provided with protection door, and described protection door and iron box (3) are all installed with A locking piece, a safety lock (10) is installed on the two locking pieces. 3. An underground far-point leakage test system in a coal mine according to claim 1, characterized in that, a resistance (11) is connected in the tee (12), and the resistance is 2000 ohms. 4. An underground far-point leakage test system in a coal mine according to claim 1, characterized in that, the model of the button (2) is BZA1-5/127-2. 5. A kind of underground far-point leakage test system in a coal mine according to claim 1, characterized in that, the round skin line (6) between the third bell mouth and the button (2) is two four-core round skin Line (9) is formed. 6 . The far-point leakage test system for underground coal mines according to claim 1 , wherein the fluorescent lamp ( 4 ), the lighting comprehensive insurance ( 5 ) and the illuminated comprehensive insurance ( 7 ) are connected. 7 . 7. An underground far-point leakage test system in a coal mine according to claim 3, characterized in that, the resistor (11) is located between the grounding side round skin wire (6) and the grounding electrode (8).

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