CN110244103A - A Clamp Ammeter Based on Rogowski Coil - Google Patents

Abstract

The invention provides a clamp ammeter based on a Rogowski coil, which includes a housing, a detection jaw, a circuit board and a battery, the detection jaw is electrically connected to the circuit board, a display screen is provided on the housing, and the display screen is electrically connected to the circuit board , which also includes a Rogowski coil electrically connected to the circuit board, a switch is provided on the side wall of the housing, the switch is electrically connected to the circuit board, the switch has a first gear and a second gear, and the switch is switched to the second gear. The detection jaw works in the first gear, and the Rogowski coil works when the switch is switched to the second gear, so that the detection jaw and the Rogowski coil of the clamp ammeter can work independently, that is, the clamp ammeter has two detection functions, which greatly improves The versatility of the clamp ammeter, and when it is not suitable for the detection of the detection jaw, the Rogowski coil can be used for detection and measurement, which can greatly improve the detection convenience of the clamp ammeter and the maintenance convenience of maintenance personnel sex.

Description

A Clamp Ammeter Based on Rogowski Coil

technical field

The invention relates to a detection tool for electrical equipment, in particular to a clamp ammeter based on a Rogowski coil.

Background technique

When the existing power equipment fails, especially when the general protection trips and the power is cut off, to determine the leakage fault point, generally use a clamp-type ammeter to conduct an overall inspection of all the lines in the entire station area. current, but the existing clamp-type ammeter bayonet is small, and it is often impossible to measure scattered wires or thick cables, which brings great difficulty to emergency repairs.

Contents of the invention

The object of the present invention is to provide a clamp ammeter with convenient detection and maintenance.

In order to achieve the above object, the present invention adopts the following technical solutions: a pincer ammeter based on Rogowski coils, including a housing, a detection jaw located on the upper end of the housing, a circuit board located in the housing, and a circuit board and detection clamp The detection jaw is electrically connected to the circuit board, the housing is provided with a display screen, and the display screen is electrically connected to the circuit board, which also includes a Rogowski coil electrically connected to the circuit board, and the side wall of the housing is provided with Switch, the switch is electrically connected to the circuit board, the switch has a first gear and a second gear, the detection jaw works when the switch is switched to the first gear, and the Rogowski coil works when the switch is switched to the second gear .

Further, the Rogowski coil includes a coil body, a connecting body and a connecting wire, the connecting body includes a first connecting end, a second connecting end and a third connecting end, one end of the coil body is connected to the first connecting end, and the other end is connected to the second connecting end. The two connecting ends are flexibly connected, one end of the connecting wire is connected to the third connecting end, and the other end is electrically connected to the circuit board.

Further, a socket is provided at the bottom of the housing, and the socket is electrically connected to the circuit board, and the connecting line is provided with a plug matched with the socket.

Further, the coil body is a flexible coil.

Further, the outer peripheral cover of the detection jaw is provided with a shielding cover for shielding other conductive parts.

Further, the detection jaws are circular after being closed, and the shape of the shielding cover is set to match the shape of the detection jaws.

Further, the movable cover of the shielding cover is arranged on the outer periphery of the detection jaw and is detachably connected with the housing.

Further, the detection jaw includes fixed pliers and movable pliers, and the shielding cover includes fixed pliers and movable pliers, the fixed hood is set corresponding to the fixed pliers, and the movable cover is set corresponding to the movable pliers and moves with the movable pliers.

Further, the shielding case is a metal shielding case.

Further, a button for detecting the opening and closing of the jaw is provided on one side of the detection jaw, and the button is located on a different side from the switching switch.

After adopting the technical scheme, the present invention has the following advantages:

1. In the present invention, by setting the Rogowski coil electrically connected with the circuit board on the clamp ammeter, and setting the switch electrically connected with the circuit board on the side wall of the housing, by switching the switch, the detection of the clamp ammeter The jaw and the Rogowski coil can work independently, that is, the clamp ammeter has two detection functions, which greatly improves the versatility of the clamp ammeter, and when it is not suitable for the detection of the detection jaw, the Rogowski coil can be used for detection , Measurement, so as to accurately locate the faulty customer, help the customer to troubleshoot in time, reduce the power outage time of the fault, and improve the reliability of the line power supply. Ensure the safety of customers' electricity use and reduce the occurrence of personal electric shock injury accidents. Taking the initiative to control the last 100-meter fault service can quickly find the fault point and eliminate it in time after the general insurance trips, so as to realize the goal and requirement of "quality service". That is to say, such setting can greatly improve the detection convenience of the clamp ammeter and the maintenance convenience of maintenance personnel.

2. The Rogowski coil includes a coil body, a connecting body and a connecting wire. The connecting body includes a first connecting end, a second connecting end and a third connecting end. One end of the coil body is connected to the first connecting end, and the other end is connected to the second connecting end. Flexible connection, one end of the connecting wire is connected to the third connecting end, and the other end is electrically connected to the circuit board. The Rogowski coil with this structure is not only convenient for detecting and measuring various types of wires to ensure the accuracy of detection and measurement, but also It is convenient for connection with the clamp ammeter and convenient for maintenance personnel to operate.

3. By setting the socket at the bottom of the shell, the socket is electrically connected to the circuit board, and the connecting line is provided with a plug that matches the socket, which facilitates the plug-in cooperation between the Rogowski coil and the clamp ammeter, and the plug-in cooperation is reliable , not easy to loose, to ensure the accuracy of detection and measurement.

4. The coil body is set as a flexible coil, so that the coil body can be deformed and can adapt to different shapes and sizes of equipment to be tested, which greatly improves the detection breadth of the Rogowski coil, thereby improving the detection breadth of the clamp ammeter.

5. By setting a shielding cover that can shield other conductive parts on the outer periphery of the detection jaw, the detection jaw will not be affected by other conductive parts or power equipment when detecting electrical equipment, thereby improving the detection and measurement efficiency of the detection jaw Accuracy, so as to accurately locate faulty customers, help customers to troubleshoot in time, reduce fault outage time, and improve line power supply reliability.

6. The detection jaw is round after closing, and the shape of the shielding cover is set to match the shape of the detection jaw, which can well ensure the maximum detection size of the detection jaw, that is, it can accommodate larger size waiting The detection equipment improves the detection universality of the detection jaw, and the shielding effect of the shielding cover is good, ensuring the accuracy of the detection and measurement of the detection jaw.

7. The movable cover of the shielding cover is set on the outer periphery of the detection jaw and is detachably connected with the housing, so that after the detection and measurement are completed, the shielding cover can be removed and stored, which is convenient for the overall storage of the clamp ammeter.

8. The detection jaw includes fixed pliers and movable pliers, and the shielding cover includes fixed pliers and movable pliers. The fixed cover and the fixed pliers are set correspondingly, and the movable cover is set correspondingly to the movable pliers and moves with the movable pliers. In this way, the shielding cover is set into two parts , one part is fixed with the fixed clamp, and the other part moves with the movable clamp, so that when testing, it is not necessary to be separately set on the shielding cover, and the detection jaw can be directly operated, and the shielding cover moves with the detection jaw, which is very good The operation convenience of the clamp ammeter is improved.

9. The shielding cover is set as a metal shielding cover, which greatly improves the shielding effect of the shielding cover, thereby improving the accuracy of detection and measurement of the detection jaw.

10. By setting the button for detecting the opening and closing of the jaw on the side of the detection jaw, it is convenient to detect the opening and closing of the jaw, and the button and the switch are set on different sides, so that when the button and the switch are operated, The button and the switch will not affect each other, ensuring convenient operation and independent work without affecting each other.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

FIG. 1 is a schematic structural diagram of Embodiment 1 of the clamp ammeter of the present invention.

Fig. 2 is a schematic diagram of the connection of the Rogowski coil in Embodiment 1 of the clamp ammeter according to the present invention.

Fig. 3 is a partial structural schematic diagram of Embodiment 2 of the clamp ammeter according to the present invention.

Fig. 4 is a schematic structural diagram of the shielding case in Embodiment 3 of the clamp ammeter according to the present invention.

The names of the components marked in the figure are as follows:

1. Shell; 11. Display screen; 12. Socket; 2. Detection jaw; 21. Fixed pliers; 22. Movable pliers; 3. Rogowski coil; 31. Coil body; 32. Connector; 321. First connection 322, the second connecting end; 323, the third connecting end; 33, connecting wire; 331, plug; 4, switch; 5, button; 6, shielding cover; 61, fixed cover; 62, movable cover.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", "vertical", "horizontal", " Words such as "top", "bottom", etc. indicating orientation or positional relationship are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device/element must have a specific orientation or are constructed and operative in a particular orientation and therefore are not to be construed as limiting the invention.

Embodiment one:

As shown in Figures 1 to 2, the present invention provides a kind of pincer ammeter based on Rogowski coil, comprising housing 1, the detection jaw 2 that is arranged on the upper end of housing 1, the circuit board that is located in housing 1 (in the figure not shown) and a battery (not shown) that supplies power to the circuit board and the detection jaw 2, the housing 1 is a plastic housing, the detection jaw 2 is electrically connected to the circuit board, and the housing 1 is provided with a display screen 11. The display screen 11 is electrically connected to the circuit board. The display screen 11 is fixed on the circuit board by soldering to form an electrical connection. The battery is a rechargeable battery. After the power of the battery is exhausted, the battery can be charged to realize recycling. Energy saving and environmental protection.

In this embodiment, the clamp ammeter also includes a Rogowski coil 3 electrically connected to the circuit board. The side wall of the housing 1 is provided with a switch 4, and the switch 4 is electrically connected to the circuit board. The switch 4 has a first gear and In the second gear position, when the switch 4 is switched to the first gear, the detection jaw 2 works, and when the switch 4 is switched to the second gear, the Rogowski coil 3 works, and by switching the switch, the detection jaw of the clamp ammeter and The Rogowski coil can work alone, that is, the clamp ammeter has two detection functions, which greatly improves the versatility of the clamp ammeter, and when it is not suitable for the detection of the detection jaw, the Rogowski coil can be used for detection and measurement. In this way, the faulty customer can be accurately located, the fault can be solved in time to help the customer, the time of power outage can be reduced, and the power supply reliability of the line can be improved. Ensure the safety of customers' electricity use and reduce the occurrence of personal electric shock injury accidents. Taking the initiative to control the last 100-meter fault service can quickly find the fault point and eliminate it in time after the general insurance trips, so as to realize the goal and requirement of "quality service". That is to say, such setting can greatly improve the detection convenience of the clamp ammeter and the maintenance convenience of maintenance personnel.

Specifically, the Rogowski coil 3 includes a coil body 31, a connecting body 32 and a connecting wire 33, the connecting body 32 includes a first connecting end 321, a second connecting end 322 and a third connecting end 323, and one end of the coil body 31 is connected to the first One end of the connecting wire 33 is connected to the third connecting end 323, and the other end is electrically connected to the circuit board. The Rogowski coil of this structure is not only convenient for detecting various types of wires , measurement, to ensure the accuracy of detection and measurement, but also to facilitate the connection between the clamp ammeter and the operation of maintenance personnel; Metal wires for electrical connection.

And, the bottom end of housing 1 is provided with socket 12, and socket 12 is electrically connected with circuit board, and connecting line 33 is provided with the plug 331 that cooperates with socket 12, facilitates the plug-in cooperation between Rogowski coil and clamp ammeter like this, and The plug-in fit is reliable and not easy to loose, so as to ensure the accuracy of detection and measurement.

In order to facilitate the detection of various types of wires and various conductive parts by the coil body, the coil body 31 can be set as a flexible coil, so that the coil body can be deformed, and can adapt to different shapes and sizes of equipment to be tested, greatly improving the detection versatility of the Rogowski coil , thereby improving the detection breadth of the clamp ammeter.

In order to facilitate the detection of the opening and closing of the jaws, a button 5 for detecting the opening and closing of the jaws can be arranged on one side of the detection jaw 2, and the button 5 and the switch 4 are located on different sides, that is, on different sides of the housing 1 , so that it is convenient to detect the opening and closing of the jaws, and the button and the switch are set on different sides, so that when the button and the switch are operated, the button and the switch will not affect each other, ensuring convenient operation and independent work without affecting each other and, the detection jaw 2 includes a fixed jaw 21 and a movable jaw 22, the button 5 is located on one side of the movable jaw 22, and the movable jaw 22 is specifically hinged to form a movement, so that the detection jaw 2 can be opened and closed.

Embodiment two:

The difference between this embodiment and the first embodiment is that the outer peripheral cover of the detection jaw is provided with a shielding cover for shielding other conductive parts.

In this embodiment, as shown in Figure 3, the outer peripheral cover of the detection jaw 2 is provided with a shielding cover 6 for shielding other conductive parts, so that the detection jaw will not be affected by other conductive parts or power equipment when detecting electric equipment. Influence, so as to improve the detection and measurement accuracy of the detection jaw, so as to accurately locate the fault customer, help the customer to eliminate the fault in time, reduce the fault power outage time, and improve the reliability of the line power supply.

Specifically, the detection jaw 2 is circular after closing, and the shape of the shielding cover 6 is matched with the shape of the detection jaw 2, that is, the shielding cover 6 is also circular, which can well ensure the maximum detection of the detection jaw. Size, that is, it can accommodate larger-sized equipment to be tested, improve the detection breadth of the detection jaw, and the shielding effect of the shielding cover is good, ensuring the accuracy of detection and measurement of the detection jaw; and, the shielding cover 6 is set as a metal The shielding cover greatly improves the shielding effect of the shielding cover, thereby improving the accuracy of detection and measurement of the detection jaw.

And, detection jaw 2 comprises fixed pliers 21 and movable pliers 22, and shielding cover 6 comprises fixed cover 61 and movable cover 62, and fixed cover 61 is set correspondingly with fixed pliers 21, and movable cover 62 is correspondingly set with movable pliers 22 and moves with movable pliers. 22 action, so that the shielding cover is set into two parts, one part is fixed with the fixed clamp, and the other part moves with the movable clamp, so that when testing, it is not necessary to be separately set on the shielding cover, and the detection jaw can be directly operated, and the shielding cover It moves with the detection jaw, which greatly improves the operation convenience of the clamp ammeter.

The structures and beneficial effects of other parts not described are the same as those in Embodiment 1, and will not be repeated here.

Embodiment three:

The difference between this embodiment and the second embodiment lies in that the structure of the shielding case is different.

In this embodiment, as shown in Figure 4, the shielding cover 6 is an integral structure, and the shielding cover 6 movable cover is arranged on the outer periphery of the detection jaw and is detachably connected with the housing, so that after the detection and measurement are completed, the After the shield cover is removed, it can be stored, which is convenient for the overall storage of the clamp ammeter.

The structures and beneficial effects of other parts not described are the same as those in Embodiment 2, and will not be repeated here.

Except above-mentioned preferred embodiment, the present invention also has other embodiments, and those skilled in the art can make various changes and deformations according to the present invention, as long as they do not depart from the spirit of the present invention, all should belong to the scope defined in the appended claims of the present invention scope.

Claims (10)

1. A clamp-on ammeter based on a Rogowski coil, comprising a housing, a detection jaw located at the upper end of the housing, a circuit board located in the housing and a battery that supplies power to the circuit board and the detection jaw, the detection jaw and the circuit The board is electrically connected, the housing is provided with a display screen, and the display screen is electrically connected to the circuit board. It is characterized in that it also includes a Rogowski coil electrically connected with the circuit board. Electrically connected, the switch has a first gear and a second gear, the detection jaw works when the switch is switched to the first gear, and the Rogowski coil works when the switch is switched to the second gear. 2. clamp ammeter according to claim 1, is characterized in that, described Rogowski coil comprises coil body, connection body and connection wire, and connection body comprises first connection end, second connection end and the 3rd connection end, and coil One end of the body is connected to the first connection end, the other end is movably connected to the second connection end, one end of the connecting wire is connected to the third connection end, and the other end is electrically connected to the circuit board. 3. The clamp ammeter according to claim 2, wherein a socket is provided at the bottom of the housing, the socket is electrically connected to the circuit board, and the connecting line is provided with a plug that matches the socket. 4. The clamp ammeter according to claim 2, wherein the coil body is a flexible coil. 5. The clamp ammeter according to claim 1, characterized in that, the outer peripheral cover of the detection jaw is provided with a shielding cover for shielding other conductive parts. 6 . The clamp ammeter according to claim 5 , wherein the detection jaws are circular after they are closed, and the shape of the shielding cover matches the shape of the detection jaws. 6 . 7 . The clamp ammeter according to claim 5 , wherein the movable cover of the shielding cover is arranged on the outer periphery of the detection jaw and is detachably connected with the housing. 8 . 8. The clamp-on ammeter according to claim 5, wherein the detection jaws comprise fixed clamps and movable clamps, the shielding cover comprises a fixed cover and a movable cover, the fixed cover and the fixed clamp are correspondingly arranged, and the movable cover and the movable cover are arranged correspondingly. The tongs are set correspondingly and act with the movable tongs. 9. The clamp ammeter according to claim 5, wherein the shielding case is a metal shielding case. 10. The clamp ammeter according to claim 1, wherein a button for detecting the opening and closing of the detection jaw is provided on one side of the detection jaw, and the button and the switch are located on a different side.