Mutual inductance type three-phase power-off-free meter changing device

Abstract

The utility model discloses a mutual inductance type three-phase uninterruptible power meter changing device which comprises a portable box, the top of the portable box is provided with a box cover, the portable box is internally provided with an equipment main body, the surface of the equipment main body is electrically connected with a row of multiple function buttons, and the multiple function buttons are arranged in the portable box. A display dial plate electrically connected with the equipment main body is arranged above each function button, and an indicating lamp A, an indicating lamp B and an indicating lamp C which are electrically connected with the equipment main body are arranged below the function buttons. The mutual inductance type three-phase power-off-free meter changing device has the functions of phase sequence judgment, voltage monitoring, current monitoring, fault alarming and the like; a parallel connection loop is provided, warning and protection are carried out on operation errors possibly occurring in the wiring and meter changing process, it is ensured that the meter changing operation is completed safely and reliably, and meanwhile the device has the advantages of being easy and convenient to install, reliable in operation and convenient to operate on the basis that the functions are met. The device can be suitable for replacing the mutual inductance type metering ammeter without power cut.

Description

Technical Field

[0001] The utility model relates to the field of electric power equipment, in particular to a mutual induction three-phase non-stop meter changing device. Background Art

[0002] Electric meter is the abbreviation of electric energy meter, which is a general term for instruments used to measure electrical energy. It is also called watt-hour meter, fire meter, electric energy meter, and kilowatt-hour meter. With the continuous deepening of human society's application of electricity, the application of electric meters has become increasingly extensive and in-depth, and has further developed towards intelligence.

[0003] In the application of electricity meters, it is often necessary to replace the electricity meters. During the replacement process, for those with special electricity needs who cannot afford to shut down the power, a series of emergency protection plans need to be formulated to ensure that the power lines can operate normally during the meter replacement process. However, formulating an emergency protection plan without power outages is not only labor-intensive and cumbersome, but also prone to emergencies, resulting in economic losses and even production accidents. Therefore, a mutual induction three-phase non-stop meter replacement device that does not require power outages is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a mutual inductance three-phase non-stop meter replacement device to solve the problem in the above-mentioned background technology that when replacing the existing electricity meter, there is the problem of formulating a non-stop emergency protection plan, which is not only costly in manpower and has a cumbersome process, but is also prone to emergencies, resulting in economic losses and even production accidents.

[0005] The technical solution of the utility model is achieved as follows: a mutual induction three-phase non-stop power meter changing device comprises a portable box, a box cover is installed on the top of the portable box, a device body is installed inside the portable box, a surface of the device body is electrically connected to a row of multiple function buttons, a display dial electrically connected to the device body is provided above each of the function buttons, an A indicator light, a B indicator light and a C indicator light electrically connected to the device body are provided below the function buttons, a first table position switch and a second table position switch electrically connected to the device body are respectively provided on both sides of the A indicator light, the B indicator light and the C indicator light, one side of the device body is electrically connected to a first table position terminal, and the other side of the device body is electrically connected to a second table position terminal;

[0006] The function buttons include a power button, a detection button, a reset button, a three-fourth switch button, a phase sequence status button and an alarm.

[0007] Preferably, the portable case is rotatably connected to one side of the case cover via a sealed hinge, and the case cover is connected to the other side of the portable case via a safety lock.

[0008] Preferably, an inscription piece is fixedly mounted on the inner wall of the box cover.

[0009] Preferably, a carrying handle is fixedly provided on the portable box shell.

[0010] Preferably, a wire receiving groove is provided on each side of the device body, a plurality of winding posts are provided inside the wire receiving groove, and the surfaces of the winding posts are subjected to anti-slip treatment.

[0011] By adopting the above technical solution, the beneficial effects of the utility model are:

[0012] This mutual induction three-phase non-stop meter changing device has functions such as phase sequence discrimination, voltage monitoring, current monitoring, fault alarm, etc. It provides a parallel connection circuit and warns and protects against operational errors that may occur during wiring and meter changing, ensuring that the meter changing operation is completed safely and reliably. At the same time, the utility model has the advantages of simple installation, reliable operation and convenient operation on the basis of meeting the functions, and can be realized as a device suitable for non-stop meter changing for mutual induction metering meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is the main view of the utility model;

[0015] Figure 2 This is the main view of the utility model with the lid open;

[0016] Figure 3 This is a top view of the box cover of the present invention when it is open;

[0017] Figure 4 for Figure 3 Magnified view of the X region.

[0018] Among them: 1. Portable box; 2. Box cover; 3. Safety lock; 4. Portable handle; 5. Device body; 6. Display dial; 7. Function button; 8. One-position switch; 9. Two-position switch; 10. Wire slot; 11. One-position terminal; 12. Two-position terminal; 13. Indicator light A; 14. Indicator light B; 15. Indicator light C; 16. Winding post; 17. Inscription piece; 701. Power button; 702. Test button; 703. Reset button; 704. Three-fourth switch button; 705. Phase sequence status button; 706. Alarm. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See Figure 1-Figure 4 , a mutual induction three-phase non-stop power meter changing device, comprising a portable box 1, a box cover 2 is installed on the top of the portable box 1, a device body 5 is installed inside the portable box 1, a surface of the device body 5 is electrically connected to a row of multiple function buttons 7, each function button 7 is provided with a display dial 6 electrically connected to the device body 5, and an A indicator light 13, a B indicator light 14 and a C indicator light 15 electrically connected to the device body 5 are provided below the function button 7. On both sides of the A indicator light 13, the B indicator light 14 and the C indicator light 15, a first meter position switch 8 and a second meter position switch 9 electrically connected to the device body 5 are respectively provided. One side of the device body 5 is electrically connected to a first meter position terminal 11, and the other side of the device body 5 is electrically connected to a second meter position terminal 12;

[0021] The function buttons 7 include a power button 701 , a detection button 702 , a reset button 703 , a three-fourth switching button 704 , a phase sequence status button 705 and an alarm 706 .

[0022] See Figure 1 、 Figure 2 and Figure 3 The portable box 1 is rotatably connected to the box cover 2 on one side by a sealed hinge, and the box cover 2 is connected to the other side of the portable box 1 by a safety lock 3. This arrangement makes it easy to lock the portable box 1 and the box cover 2 together through the safety lock 3 when the device is not in use, avoiding damage and malfunction caused by unauthorized persons opening the device, thereby improving the safety of the device.

[0023] See Figure 2 The inner wall of the box cover 2 is fixedly installed with an inscription piece 17, which can be used to identify the performance parameters, usage specifications, and precautions of the device, so that users can always remind themselves when using it and improve the standardization and safety of operation.

[0024] See Figure 1 、 Figure 2 and Figure 3 A portable handle 4 is fixedly provided on the shell of the portable box 1, so that the user can conveniently carry the device to the workplace, thereby improving the portability of the device.

[0025] See Figure 3A wire receiving slot 10 is provided on each side of the device body 5, and a plurality of winding posts 16 are provided inside the wire receiving slot 10. The surface of the winding posts 16 is anti-slip treated. This arrangement makes it easy to place the cables and tools needed for changing the meter in the wire receiving slot 10, and the winding posts 16 can increase the friction of the cable, thereby improving the stability of the cable placed in the wire receiving slot 10 and preventing the cables from getting entangled in the wire receiving slot 10.

[0026] Working principle: When using this device, first fix the new meter to one of the meter terminals 11 of this device, then use the puncture splitter to connect the meter that needs to be replaced on site (if there is a junction box, a special connection tool for the junction box can be used to connect the meter, if there is no junction box, a special puncture splitter can be used to connect the meter). When wiring the three-phase three-wire meter, the B phase current is not connected, and the N phase of the device is connected to the B phase of the junction box voltage. Then switch the one-meter switch 8 to the first gear. When replacing a three-phase three-meter, press the three-fourth switch button 704 and then power on the device. Press the power button 701 to power the device body 5. After the power supply is completed, press the test button 702 to detect the A / B / C voltage phase sequence and CT status, and observe the status of the A indicator light 13, B indicator light 14, C indicator light 15, phase sequence status button 705 and alarm 706: When the CT indicator light is red and alarms, you need to check Check whether the on-site current parallel meter wire has unsuccessful puncture or unsuccessful paralleling through the junction box, and the CT abnormal alarm surface. Recheck whether the current wire parallel connection is abnormal according to the device wiring process. After troubleshooting, the indicator light is always green, and press the reset button to retest; when the voltage phase sequence red light is always on and an alarm is given, it is necessary to check whether the on-site parallel voltage wire is connected successfully. After troubleshooting, press the reset button to retest; when all indicator lights are green, remove the old meter and fix it to the second meter terminal 12, the second meter switch 9 is switched to the first gear, and the first meter switch 8 is switched to the zero gear. Remove the new meter and install it to the user's meter position, check the power information of the new meter and make a record, check the power information of the old meter and make a record, the second meter terminal 12 meter switch is switched to the zero gear, disconnect the detection button 702, remove the old meter, disconnect the power button 701, remove the special wiring harness and special connection tools for meter replacement, and the meter replacement is completed.

[0027] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between the components and the technical effect, or it can be an integral connection or a partial connection. As in this example, for those skilled in the art, the specific meanings of the above terms in this utility model or the utility model can be understood according to the specific circumstances. In this utility model, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "transverse", "longitudinal", etc. are based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly for better describing the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Finally, it should be noted that when describing the positions of various components and the matching relationships between them, the utility model usually uses one or a pair of components as an example. However, those skilled in the art should understand that such positions, matching relationships, etc. are also applicable to other components / other pairs of components.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Mutual induction three-phase non-stop meter changing device, characterized by: The portable case (1) comprises a case cover (2) installed on the top of the portable case (1), a device body (5) installed inside the portable case (1), a row of multiple function buttons (7) electrically connected to the surface of the device body (5), a display dial (6) electrically connected to the device body (5) is arranged above each function button (7), an A indicator light (13), a B indicator light (14) and a C indicator light (15) electrically connected to the device body (5) are arranged below the function buttons (7), a first table switch (8) and a second table switch (9) electrically connected to the device body (5) are respectively arranged on both sides of the A indicator light (13), the B indicator light (14) and the C indicator light (15), one side of the device body (5) is electrically connected to a first table terminal (11), and the other side of the device body (5) is electrically connected to a second table terminal (12); The functional buttons (7) include a power button (701), a detection button (702), a reset button (703), a three-fourth switching button (704), a phase sequence status button (705) and an alarm (706).

2. The mutual induction three-phase non-stop meter replacement device according to claim 1, characterized in that: The portable case (1) is rotatably connected to one side of the case cover (2) via a sealed hinge, and the case cover (2) is connected to the other side of the portable case (1) via a safety lock (3).

3. The mutual induction three-phase non-stop meter switching device according to claim 1, characterized in that: An inscription sheet (17) is fixedly mounted on the inner wall of the box cover (2).

4. The mutual induction three-phase non-stop meter-changing device according to claim 1, characterized in that: A portable handle (4) is fixedly provided on the shell of the portable box (1).

5. The mutual induction three-phase non-stop meter changing device according to claim 1, characterized in that: A wire receiving groove (10) is provided on each side of the device body (5), and a plurality of winding poles (16) are provided inside the wire receiving groove (10), and the surfaces of the winding poles (16) are subjected to anti-slip treatment.

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