Power transformation and distribution device for electrical test of mining high-explosive switch

Abstract

The utility model provides a mining high-explosion switch electrical test-used power transformation and distribution device, when the device is used, air switches of two modules are turned off, a U-shaped wiring terminal of a power line is connected to an underground 660V power supply, an explosion-proof plug at the other end of the power line is connected to a first explosion-proof socket of a 660V alternating current transformation module, and the 660V alternating current transformation module is connected to a second explosion-proof socket of the 660V alternating current transformation module. A second explosion-proof socket on the 660V alternating-current transformation module is electrically connected with a third explosion-proof socket on the 100V alternating-current transformation module, an explosion-proof plug at one end of a power distribution output line is electrically connected with a fourth explosion-proof socket of the 100V alternating-current transformation module, and three alligator clips at the other end of the power distribution output line are electrically connected to three terminals of a high-explosion switch three-phase voltage transformer. The air switch is switched to a switching-on position to supply power, and then a power socket of a test instrument power supply is connected to start the test. The beneficial effects of the utility model are that the device employs a split type design, can be flexibly matched, can meet the requirement that the high-explosive switch detection takes three-phase AC 100V / 660V as input, and can achieve the output of three-phase AC 100V and AC 220V at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a power distribution device for electrical testing of a high-explosive switch for mines. Background Art

[0002] The flameproof high-voltage power distribution device for mines is an electrical device used in flammable and explosive environments such as coal mines. This switch can quickly cut off the current when the circuit is interrupted to prevent sparks in the circuit from causing explosions or fires.

[0003] Mine flameproof high-voltage distribution devices are usually used in coal mines, petrochemical plants and other flammable and explosive industrial sites, and are one of the important equipment to ensure work safety. These devices need to comply with specific safety standards and regulations, and often require regular inspection and maintenance to ensure their normal operation and safety performance. Generally speaking, in addition to daily inspection and maintenance work, each coal mine will also test the safety performance of the mine flameproof high-voltage distribution devices in use every year in accordance with the "Preventive Test Procedures for Power Equipment". During the development of these tests, it is necessary to provide a 220V single-phase AC power supply and a 100V three-phase AC power supply for the test equipment. The underground power supply of coal mines is mainly 660V AC, so when conducting preventive tests on mine flameproof high-voltage distribution devices, it is necessary to provide these two voltage levels of power to ensure the normal and orderly progress of the test work. This patent aims to meet this demand by designing and manufacturing a transformer and distribution device used for electrical preventive tests of mine flameproof high-voltage distribution devices. Utility Model Content

[0004] The utility model is based on the above technical problems and proposes a power distribution device for electrical testing of high-explosive switches for mines.

[0005] A power distribution device for electrical testing of high-explosive switches for mines, comprising: a 660V AC transformer module, a 100V AC transformer module, a power cord, a quick-plug cable, and a power distribution output cable. One end of the power cord has three U-shaped terminals, and the other end has an explosion-proof plug; both ends of the quick-plug cable have the explosion-proof plug; one end of the power distribution output cable has three crocodile clips, and the other end has the explosion-proof plug; the U-shaped terminal of the power cord is connected to the 660V power supply underground, and the explosion-proof plug at the other end of the power cord is connected to the The first explosion-proof socket of the 660V AC transformer module is connected to the second explosion-proof socket of the 660V AC transformer module through the quick-plug wire, and the explosion-proof plug at one end of the power distribution output line is electrically connected to the fourth explosion-proof socket of the 100V AC transformer module. The three alligator clips at the other end are electrically connected to the three terminals of the three-phase voltage transformer of the high-explosive switch. The 100V AC transformer module is also provided with a power socket, which supplies power to the test instruments.

[0006] In a possible implementation, the 660V AC transformation module is composed of a circuit breaker and a three-phase AC transformer with a transformation ratio of 660V / 100V connected in series, and the 100V AC transformation module is composed of the circuit breaker and a single-phase AC step-up transformer with a transformation ratio of 100V / 220V.

[0007] In a possible implementation, the 660V AC transformation module and the 100V AC transformation module are further provided with a control panel, and the control panel is provided with an air switch and a leakage protection device.

[0008] In a possible implementation, the first explosion-proof socket and the second explosion-proof socket are installed on a side of the 660V AC transformer module, and the first explosion-proof socket and the second explosion-proof socket are respectively a 660V input terminal and a 100V output terminal.

[0009] In a possible implementation, the third explosion-proof socket, the fourth explosion-proof socket and the power socket are installed on the side of the 100V AC transformer module, and the third explosion-proof socket, the fourth explosion-proof socket and the power socket are respectively a 100V input end, a 100V output end and a 220V power output end.

[0010] Beneficial effects: The device can meet the requirements of high-explosive switch detection with three-phase AC 100V / 660V as input, and can also realize the power distribution device with three-phase AC 100V and AC 220V output;

[0011] This device adopts a modular design and can be flexibly combined according to the actual situation in actual application, which can meet more usage scenarios. At the same time, the modular design of the equipment simplifies the equipment structure and is conducive to the maintenance and repair of the equipment. The modules are connected with industrial-grade explosion-proof plugs. When in use, the equipment shell uses a flame-retardant plastic waterproof shell, which improves the insulation performance of the equipment and enables the equipment to adapt to the harsh environment of the mine, improving the safety performance and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Shows a structural flow chart of the utility model;

[0013] Figure 2 The electrical principle diagram of the device is shown;

[0014] Figure 3 Shows the structural diagram of the 660V AC transformer module

[0015] Figure 4 The schematic diagram of the structure of the 100V AC transformer module is shown;

[0016] Figure 5 The electrical principle diagram of the 660V AC transformer module is shown;

[0017] Figure 6 Shows the electrical schematic diagram of the 100V AC transformer module

[0018] Figure 7 A schematic diagram of the structure of the control panel is shown;

[0019] Figure 8 shows a schematic diagram of the structure of the power line;

[0020] Fig. 9 A schematic diagram of the structure of a quick-connect cable is shown;

[0021] Fig.10 shows a schematic diagram of the structure of the power distribution output line;

[0022] Fig.11 The structural flow chart is shown when 660V power supply cannot be provided underground. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] like Figure 1 to Figure 11The power distribution device for electrical testing of high-explosive switches for mines shown in the figure comprises: a 660V AC transformer module 1, a 100V AC transformer module 2, a power cord 3, a quick-plug cord 4, and a power distribution output cord 5. The 660V AC transformer module 1 is composed of a circuit breaker and a three-phase AC transformer with a transformation ratio of 660V / 100V connected in series. A first explosion-proof socket 6 and a second explosion-proof socket 7 are provided on the side of the 660V AC transformer module 1. The first explosion-proof socket 6 and the second explosion-proof socket 7 are respectively a 660V input terminal and a 100V output terminal; the 100V AC transformer module Block 2 is composed of a circuit breaker and a single-phase AC step-up transformer with a transformation ratio of 100V / 220V. A third explosion-proof socket 8, a fourth explosion-proof socket 9 and a power socket 10 are provided on the side of the 100V AC transformation module 2. The third explosion-proof socket 8, the fourth explosion-proof socket 9 and the power socket 10 are respectively a 100V input end, a 100V output end and a 220V power output end; a control panel 11 is also provided in the 660V AC transformation module 1 and the 100V AC transformation module 2, and an air switch 12 and a leakage protection device 13 are provided on the control panel 11.

[0025] One end of the power cord 3 has three U-shaped terminals 14, and the other end has an explosion-proof plug 15; both ends of the quick-connect cord 4 have explosion-proof plugs 15; one end of the distribution output cord 5 has three alligator clips 16, and the other end has an explosion-proof plug 15.

[0026] A box cover 18 connected with a buckle 20 is provided on the housing 17 of the 660V AC transformer module 1 and the 100V AC transformer module 2, and a handle 19 is provided on the box cover 18 for easy carrying.

[0027] The use of this device is as follows:

[0028] During the test, when using it on site, first open the box covers of the 660V AC transformer module 1 and the 100V AC transformer module 2, turn the air switches 12 of the two modules to the disconnected position, connect the U-shaped terminal 14 of the power cord 3 to the 660V power supply in the well, and connect the explosion-proof plug 15 at the other end of the power cord 3 to the first explosion-proof socket 6 of the 660V AC transformer module 1. The second explosion-proof socket 7 on the 660V AC transformer module 1 is electrically connected to the third explosion-proof socket 8 on the 100V AC transformer module 2 through the quick-plug wire 4. The explosion-proof plug 15 at one end of the distribution output line 5 is electrically connected to the fourth explosion-proof socket 9 of the 100V AC transformer module 2, and the three alligator clips 16 at the other end are electrically connected to the three terminals of the three-phase voltage transformer of the high-explosive switch. The air switch 12 is turned to the closed position to supply power, and then the power supply line of the test instrument power supply is connected to the 220V power socket 10 of the 100V AC transformer module 2 to start the test.

[0029] In the above process, if Fig.11As shown, if a 660V power supply cannot be provided underground, the 660V AC transformer module 1 can be discarded, and the 100V AC transformer module 2 can be directly connected to the 100V power supply through the power line 3, and the 100V power supply directly supplies power to the 100V AC transformer module 2.

[0030] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power distribution device for electrical testing of high-explosive switches for mines, characterized in that: include: 660V AC transformer module, 100V AC transformer module, power cord, quick-plug cord, power distribution output cord, one end of the power cord has three U-shaped terminals, and the other end has an explosion-proof plug; both ends of the quick-plug cord have the explosion-proof plug; one end of the power distribution output cord has three crocodile clips, and the other end has the explosion-proof plug; the U-shaped terminal of the power cord is connected to the 660V power supply underground, the explosion-proof plug at the other end of the power cord is connected to the first explosion-proof socket of the 660V AC transformer module, the second explosion-proof socket on the 660V AC transformer module is electrically connected to the third explosion-proof socket on the 100V AC transformer module through the quick-plug cord, the explosion-proof plug at one end of the power distribution output cord is electrically connected to the fourth explosion-proof socket of the 100V AC transformer module, and the three crocodile clips at the other end are electrically connected to the three terminals of the three-phase voltage transformer of the high-explosive switch, and the 100V AC transformer module also has a power socket, which supplies power to the test instruments.

2. The power transformer and distribution device for electrical testing of high-explosive switches for mines according to claim 1 is characterized in that: The 660V AC transformation module is composed of a circuit breaker and a three-phase AC transformer with a transformation ratio of 660V / 100V connected in series, and the 100V AC transformation module is composed of the circuit breaker and a single-phase AC step-up transformer with a transformation ratio of 100V / 220V.

3. The power transformer and distribution device for electrical testing of high-explosive switches for mines according to claim 1, characterized in that: The 660V AC transformer module and the 100V AC transformer module are also provided with a control panel, and the control panel is provided with an air switch and a leakage protection device.

4. The power transformer and distribution device for electrical testing of high-explosive switches for mines according to claim 1, characterized in that: The first explosion-proof socket and the second explosion-proof socket are installed on the side of the 660V AC transformer module, and the first explosion-proof socket and the second explosion-proof socket are respectively a 660V input terminal and a 100V output terminal.

5. The power transformer and distribution device for electrical testing of high-explosive switches for mines according to claim 4, characterized in that: The third explosion-proof socket, the fourth explosion-proof socket and the power socket are installed on the side of the 100V AC transformer module. The third explosion-proof socket, the fourth explosion-proof socket and the power socket are respectively a 100V input end, a 100V output end and a 220V power output end.

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