A ship power grid testing device

Abstract

The present application provides a ship power grid test device, including a box, an equipment socket, a flexible cable, an air switch, a voltmeter, a megohmmeter and a phase sequence meter. The equipment socket is arranged on the shell of the box, one end of the flexible cable is used to be plugged into the equipment socket, and the other end is used to be connected to the circuit of the electrical equipment in the power grid. The voltmeter, megohmmeter and phase sequence meter all include a display module arranged on the surface of the box shell. One end of the air switch is connected to the equipment socket circuit, and the other end is connected to the voltmeter, megohmmeter and phase sequence meter circuit. A rotary voltage conversion switch is arranged on the circuit connected between the air switch and the voltmeter, an insulation detection switch is arranged on the circuit connected between the air switch and the megohmmeter, and a phase sequence test switch is arranged on the circuit connected between the air switch and the phase sequence meter. The present application scheme integrates the functions of voltage measurement, insulation measurement, phase sequence measurement, etc., saves time, reduces the number of test personnel, reduces the labor intensity of construction personnel, and effectively reduces the safety risks of the test.

Description

Technical Field

[0001] The present application relates to the technical field of ship power grid testing, and in particular to a ship power grid testing device. Background Art

[0002] The construction vessel is equipped with an emergency power grid device, which is a power distribution device that converts between normal power supply and emergency power supply. When the ship's main power grid fails or is partially damaged, the normal power supply network cannot work, and the emergency power grid device directly uses the power generated by the generator to provide temporary power supply guarantee for important load equipment.

[0003] In the prior art, when debugging the accident power grid system, it is necessary to use an insulation meter to measure insulation, and use a phase sequence meter and a multimeter to measure phase sequence and voltage. The operation is cumbersome and there is a risk of electric shock. For example, in some debugging work, 3 to 4 people are required to cooperate in the debugging and inspection. During the debugging of the accident power grid, the construction personnel carry various instruments to measure and check the equipment one by one. In particular, when the equipment measures voltage and phase sequence, it needs to measure with power on, which is easy to cause electric shock accidents. Summary of the invention

[0004] The purpose of the embodiment of the present application is to provide a ship power grid testing device, which integrates functions such as voltage measurement, insulation measurement, and phase sequence measurement, saves testing time, reduces the number of test personnel, reduces the labor intensity of construction personnel, and effectively reduces the safety risks of the test.

[0005] The present application provides a ship power grid testing device, comprising a box, an equipment socket, a flexible cable, an air switch, a voltmeter, a megohmmeter and a phase sequence meter.

[0006] The box body is a waterproof shell structure, and the equipment socket is arranged on the shell of the box body; one end of the soft cable is used to be plugged into the equipment socket, and the other end is used to be connected to the circuit of the electrical equipment in the power grid; the voltmeter, megohmmeter and phase sequence meter all include a display module arranged on the surface of the box shell; one end of the air switch is connected to the equipment socket circuit, and the other end is connected to the voltmeter, megohmmeter and phase sequence meter circuit; a rotary voltage conversion switch is arranged on the circuit connecting the air switch and the voltmeter, an insulation detection switch is arranged on the circuit connecting the air switch and the megohmmeter, and a phase sequence test switch is arranged on the circuit connecting the air switch and the phase sequence meter.

[0007] In an implementable solution, the ship power grid testing device has one or more equipment sockets.

[0008] In an implementable solution, when there are multiple device sockets, the number of air switches is consistent with the number of device sockets, and each device socket is connected to an air switch circuit.

[0009] In one feasible solution, when there are multiple device sockets, the number of flexible cables is consistent with the number of device sockets.

[0010] In an implementable solution, the ship power grid test device includes a grounding post and a grounding wire. The grounding post is arranged on a box body, and a first end of the grounding wire is connected to the grounding post. When in use, a second end of the grounding wire is connected to the hull.

[0011] In an implementable solution, a conductive clip is provided at the second end of the grounding wire of the ship power grid testing device for facilitating clamping on the ship hull.

[0012] In an implementable solution, the ship power grid testing device includes a power indicator light, which is connected to the output circuit of the air switch.

[0013] In an implementable solution, the ship power grid testing device includes a phase sequence indicator light, which is arranged on the surface of the box and is used to indicate the phase sequence of the power-consuming equipment and the flexible cable output.

[0014] Compared with the prior art, the beneficial effects of this application include at least:

[0015] When the ship power grid test device of the present application is used, the electrical equipment in the power grid is connected to the equipment socket with a soft cable. Then, close the corresponding air switch. First, close the insulation detection switch, connect the air switch and the megohmmeter, observe the measured insulation resistance on the megohmmeter, and check whether the insulation resistance meets the standard. Second, disconnect the insulation detection switch, supply power to the power grid equipment, close the phase sequence test switch, and observe whether the phase sequence displayed on the display module of the phase sequence meter is in order. If it is in reverse order, it is necessary to replace two line sequences. Third, operate the rotary voltage conversion switch to observe whether the voltage displayed by the voltmeter is consistent with the output voltage of the power grid equipment. Finally, disconnect the air switch and unplug the soft cable to complete the test.

[0016] It can be seen that the ship power grid test device of the present application integrates the functions of voltage measurement, insulation measurement, phase sequence measurement, etc. When using the ship power grid test device of the present application for testing, only one person is needed to complete the inspection of resistance, phase sequence and voltage, which can save time, reduce the number of test personnel, and reduce the labor intensity of construction personnel. At the same time, during the test process, the test personnel do not need to reconnect the wires, but only need to perform plug-in and switch operations, which effectively reduces the safety risks of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural diagram of a ship power grid testing device according to an embodiment of the present application;

[0019] Figure 2 It is a front view of a ship power grid testing device according to an embodiment of the present application;

[0020] Figure 3 The present invention is a circuit diagram of a ship power grid testing device according to an embodiment of the present application.

[0021] In the figure:

[0022] 1. Box body; 11. Electric control box door lock; 2. Equipment socket; 21. First equipment socket; 22. Second equipment socket; 23. Third equipment socket; 3. Flexible cable; 4. Air switch; QF1. First air switch; QF2. Second air switch; QF3. Third air switch; 5. Voltmeter; 51. Rotary voltage conversion switch; 6. Megaohmmeter; 61. Insulation detection switch; 7. Phase sequence meter; 71. Phase sequence test switch; 72. Phase sequence indicator light; 8. Grounding column; 81. Grounding wire; 82. Conductive clip; 9. Power indicator light. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] like Figure 1-Figure 3 As shown, this embodiment provides a ship power grid testing device, including a box body 1, an equipment socket 2, a flexible cable 3, an air switch 4, a voltmeter 5, a megohmmeter 6 and a phase sequence meter 7.

[0026] The box body 1 is a waterproof housing structure, designed to be IP56 waterproof grade. The device socket 2 is arranged on the housing of the box body 1. One end of the flexible cable 3 is used to be plugged into the device socket 2, and the other end is used to be connected to the circuit of the power device in the power grid.

[0027] The voltmeter 5, megohmmeter 6 and phase sequence meter 7 all include a display module arranged on the surface of the housing 1. For example, the display module of the voltmeter 5 and megohmmeter 6 can be a pointer or a digital display type reading meter. The display module of the phase sequence meter 7 can be an indicator light.

[0028] One end of the air switch 4 is connected to the circuit of the equipment socket 2, and the other end is connected to the circuits of the voltmeter 5, the megohmmeter 6 and the phase sequence meter 7. A rotary voltage conversion switch 51 is provided on the circuit connecting the air switch 4 and the voltmeter 5, an insulation detection switch 61 is provided on the circuit connecting the air switch 4 and the megohmmeter 6, and a phase sequence test switch 71 is provided on the circuit connecting the air switch 4 and the phase sequence meter 7.

[0029] When the ship power grid test device of this embodiment is used, the electrical equipment in the power grid is connected to the equipment socket 2 with a soft cable 3. Then, close the corresponding air switch 4. First, close the insulation detection switch 61, connect the air switch 4 and the megohmmeter 6, observe the measured insulation resistance on the megohmmeter 6, and check whether the insulation resistance meets the standard. Second, disconnect the insulation detection switch 61, supply power to the power grid equipment, close the phase sequence test switch 71, and observe whether the phase sequence displayed by the display module of the phase sequence meter 7 is in order. If it is in reverse order, it is necessary to replace two line sequences. Third, operate the rotary voltage conversion switch 51 to observe whether the voltage displayed by the voltmeter 5 is consistent with the output voltage of the power grid equipment. Finally, disconnect the air switch 4 and unplug the soft cable 3 to complete the test.

[0030] It can be seen that the ship power grid test device of this embodiment integrates the functions of voltage measurement, insulation measurement, phase sequence measurement, etc. When using the ship power grid test device of this embodiment for testing, only one person is needed to complete the inspection of resistance, phase sequence and voltage, which can save time, reduce the number of test personnel, and reduce the labor intensity of construction personnel. At the same time, during the test process, the test personnel do not need to reconnect the wires, but only need to perform plug-in and switch operations, which effectively reduces the safety risks of the test.

[0031] The device socket 2 of the ship power grid test device may include multiple devices. For example, it may include a first device socket 21, a second device socket 22, and a third device socket 23. The number of corresponding flexible cables 3 may also be three. The first device socket 21, the second device socket 22, and the third device socket 23 can be used to connect to different electrical devices.

[0032] Correspondingly, in this embodiment, Figure 1 and Figure 3 As shown, when the device socket 2 includes multiple devices, the number of air switches 4 is consistent with the number of device sockets 2, and each device socket 2 is connected to a circuit of an air switch 4. For example, when the device socket 2 includes a first device socket 21, a second device socket 22, and a third device socket 23, the air switch 4 may include a first air switch QF1, a second air switch QF2, and a third air switch QF3. By operating different air switches 4, different electrical devices can be connected to the circuit of the test device, thereby facilitating the testing of multiple electrical devices.

[0033] In this embodiment, if Figure 1 As shown, the ship power grid test device includes a grounding column 8 and a grounding wire 81. The grounding column 8 is arranged on the box 1, and the first end of the grounding wire 81 is connected to the grounding column 8; when in use, the second end of the grounding wire 81 is connected to the hull.

[0034] In this embodiment, if Figure 1 As shown, the second end of the grounding wire 81 can be provided with a conductive clip 82 for convenient clamping on the hull.

[0035] In this embodiment, if Figure 1 and Figure 3 As shown, the ship power grid testing device may include a power indicator light 9, which is connected to the output circuit of the air switch 4 to observe the power-on status of the equipment.

[0036] In this embodiment, if Figure 1 and Figure 3 As shown, the ship power grid test device includes a phase sequence indicator light 72, which serves as a display module of the phase sequence meter 7 and is arranged on the surface of the box 1 to indicate the phase sequence of the output of the electrical equipment and the flexible cable 3.

[0037] In addition, the box body 1 can be provided with an electric control box door lock 11. For safety reasons, the control box door can be locked with a professional door lock to prevent accidental electric shock.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ship power grid testing device, characterized in that: It includes a box (1), an equipment socket (2), a flexible cable (3), an air switch (4), a voltmeter (5), a megohmmeter (6) and a phase sequence meter (7): The box body (1) is a waterproof shell structure, and the device socket (2) is arranged on the shell of the box body (1); One end of the flexible cable (3) is used for plugging into the device socket (2), and the other end is used for connecting to the circuit of the power-consuming device in the power grid; The voltmeter (5), the megohmmeter (6) and the phase sequence meter (7) all include a display module arranged on the shell surface of the box (1); One end of the air switch (4) is connected to the circuit of the device socket (2), and the other end is connected to the circuit of the voltmeter (5), the megohmmeter (6) and the phase sequence meter (7); A rotary voltage conversion switch (51) is provided on the circuit connecting the air switch (4) and the voltmeter (5), an insulation detection switch (61) is provided on the circuit connecting the air switch (4) and the megohmmeter (6), and a phase sequence test switch (71) is provided on the circuit connecting the air switch (4) and the phase sequence meter (7).

2. The ship power grid testing device according to claim 1, characterized in that: The number of the device sockets (2) is one or more.

3. The ship power grid testing device according to claim 2, characterized in that: When there are multiple device sockets (2), the number of the air switches (4) is consistent with the number of the device sockets (2), and each device socket (2) is connected to a circuit of the air switch (4).

4. The ship power grid testing device according to claim 3, characterized in that: When the device sockets (2) include a plurality of devices, the number of the flexible cables (3) is consistent with the number of the device sockets (2).

5. The ship power grid testing device according to claim 1, characterized in that: The ship power grid testing device comprises a grounding post (8) and a grounding wire (81); the grounding post (8) is arranged on the box (1); a first end of the grounding wire (81) is connected to the grounding post (8); when in use, a second end of the grounding wire (81) is connected to a ship body.

6. The ship power grid testing device according to claim 5, characterized in that: The second end of the grounding wire (81) is provided with a conductive clip (82) for convenient clamping on the hull.

7. The ship power grid testing device according to claim 1, characterized in that: The ship power grid testing device comprises a power indicator light (9), and the power indicator light (9) is connected to the output end circuit of the air switch (4).

8. The ship power grid testing device according to claim 1, characterized in that: The ship power grid test device comprises a phase sequence indicator light (72) which serves as a display module of the phase sequence meter (7) and is arranged on the surface of the box (1) and is used to indicate the phase sequence output by the electrical equipment and the flexible cable (3).

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