A multichannel clamp-on ammeter

Abstract

The utility model discloses a kind of multi-channel clamp ammeter, it is related to relay protection technical field, including fuselage, the main control component of being arranged in the inside of fuselage and the cooperation of several tongs with fuselage, several connecting ports electrically connected with the main control component are arranged on the fuselage, the number of connecting port is same with the number of tongs and one-to-one cooperation, each tongs is docked with corresponding connecting port by flexible connecting line.This utility model is reasonable in design, several tongs are connected with fuselage, alarm lamp is located on tongs, so that multiple live flexible connecting lines can be detected simultaneously, compared with prior art, the device can play a live warning role when carrying out maintenance and live maintenance, and the efficiency is higher when detecting multiple live flexible connecting lines.

Description

Technical Field

[0001] This utility model relates to the field of relay protection technology, and more specifically to the field of multi-channel clamp ammeter technology. Background Technology

[0002] A clamp meter is a portable instrument that can directly measure AC and DC current without disconnecting the circuit. Its working part consists of an electromagnetic ammeter and a through-type current transformer, with its iron core made into a movable opening and clamp shape. It has evolved from analog to digital, possessing most of the functions of a multimeter, and can measure various parameters such as AC and DC current. Existing patents disclose the following technologies: The patent with publication number CN110346626A and patent name "Clamp-on Ammeter" discloses the following: It includes a clamp-on multimeter with a fixing tube installed on one side. The fixing tube is a tubular structure, and one end of the fixing tube is connected to a cloth bag. The cloth bag is a shell structure made of filter cloth with one open end, and the opening of the cloth bag is connected to the opening of one end of the fixing tube. This invention utilizes a combination of a gearbox, fan blades, a motor, and a brush. The motor can drive the fan blades to rotate, drawing dust into the fixing tube and the cloth bag. Simultaneously, the motor can drive the input shaft of the gearbox to rotate. After the gearbox decelerates, it drives the brush to rotate at a slower speed, thus allowing the user to easily brush off the dust and facilitating dust absorption by the fan blades.

[0003] Patent publication number CN114325036A, entitled "Clamp-on Ammeter," discloses the following: A clamp-on ammeter includes a first clamp with a first end and a second end; a second clamp with a third end and a fourth end, the third end slidingly engaging with the first end, causing the fourth end to open or close relative to the second end; a support module supporting the first and second clamps; a first drive module disposed on the support module for driving the third end to slide relative to the first end; and an ammeter, with the first and second clamps electrically connected to the ammeter. In use, the first drive module drives the first and third ends to slide relative to each other, causing the first and second clamps to open or close relative to each other. When open, a cable enters between the first and second clamps. When closed, the current value of the ammeter cable can pass through. This method of current detection automatically drives the opening and closing of the first and second clamps, making operation convenient and less strenuous.

[0004] The aforementioned patents and current clamp-on ammeters generally consist of a main body and a clamp. Testing begins by placing the clamp over the flexible connecting wire, and each clamp can only test one flexible connecting wire at a time. However, during routine maintenance in power plants, some flexible connecting wires in certain maintenance areas, such as terminal blocks, may be live, potentially posing a hazard to maintenance work. Therefore, there is an urgent need for a multi-channel clamp-on ammeter with an alarm function to address this issue. Utility Model Content

[0005] The purpose of this invention is to address the technical problem that current clamp-on ammeters are only used for current detection and can only detect one flexible connection wire at a time. In daily maintenance work, some maintenance areas, such as terminal blocks, may be energized, which may pose potential hazards to the maintenance work. This invention provides a multi-channel clamp-on ammeter.

[0006] The purpose of this invention is to provide a multi-channel clamp ammeter with an added alarm device to solve the problem mentioned in the background art that the current clamp ammeter is only used for current detection and can only detect one flexible connection wire at a time. In daily maintenance work, some maintenance areas such as terminal blocks may be energized, which may cause potential hazards to the maintenance work, such as protection malfunction and PT short circuit.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model provides a multi-channel clamp ammeter, including a body, a main control component disposed inside the body, and a plurality of clamp bodies that cooperate with the body. The body is provided with a plurality of connection ports that are electrically connected to the main control component. The number of connection ports is the same as the number of clamp bodies and they are matched one by one. Each clamp body is connected to the corresponding connection port through a flexible connection line.

[0008] Specifically, the device uses several clamps connected to the main body, with alarm lights located on the clamps, allowing for the simultaneous detection of multiple flexible connecting wires. Compared with existing technologies, this device is more efficient in detecting multiple flexible connecting wires.

[0009] In one embodiment, the machine body is provided with a display component that is electrically connected to the main control component. The display component includes a plurality of display screens, the number of which is consistent with the number of clamps and they are displayed in a one-to-one correspondence.

[0010] In one embodiment, the housing includes a square housing, a louvered heat dissipation assembly disposed on the square housing, and an inwardly recessed concealed groove disposed on one side of the square housing, with all connection ports located within the concealed groove.

[0011] In one embodiment, several connection ports are evenly distributed in a straight line along the inside of the concealed groove.

[0012] In one embodiment, each clamp body is provided with an alarm component that is electrically connected to the main control component.

[0013] In one embodiment, the alarm component includes a light indicator unit for alarm notification, wherein the light indicator unit is a plurality of LED alarm lights embedded in the clamp housing.

[0014] Specifically, each clamp is equipped with an alarm light, which can help personnel quickly identify abnormal current flexible connection wires during maintenance.

[0015] In one embodiment, the alarm component further includes a sound-emitting unit for alarm notification, wherein the sound-emitting unit is a buzzer alarm.

[0016] In one embodiment, each flexible connecting line includes a connector head connected to a corresponding connector port, a first connecting straight line connected to the connector head, a threaded coiled line connected to the first connecting straight line, and a second connecting straight line connected to the threaded coiled line. The second connecting straight line is connected to a connector end connected to a corresponding clamp body.

[0017] The flexible connecting cable between the machine body and the clamp body is a separate connector type.

[0018] In one implementation, the length of the threaded coil is greater than 1 / 2 of the length of the corresponding flexible connecting line.

[0019] In one embodiment, each clamp body includes an outer shell, two clamping units disposed inside the outer shell, and a control button for controlling the openings of the two clamping units. The two clamping units extend out of the outer shell, and semi-circular clamping grooves are provided on opposite sides of the two clamping units extending out of the outer shell.

[0020] In one embodiment, the housing is provided with auxiliary control components.

[0021] The beneficial effects of this utility model are as follows: This invention employs several clamps connected to the main body, with alarm lights located on the clamps, enabling simultaneous testing of multiple flexible cables. Compared to existing technologies, this device is more efficient when testing a large number of flexible cables, and each clamp is equipped with an alarm light, which helps personnel quickly identify abnormal currents in the flexible cables during maintenance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a top-view perspective view of the overall structure of this utility model.

[0024] Figure 2 This is a bottom-view perspective view of the overall structure of this utility model.

[0025] Figure 3This is a schematic diagram of the alarm component structure of this utility model.

[0026] Reference numerals: 110, fuselage; 111, clamp body; 112, concealed slot; 113, alarm component. Detailed Implementation

[0027] To make the technical problems, technical solutions, and technical effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] This utility model provides a multi-channel clamp ammeter, including a body 110, a main control component disposed inside the body 110, and a plurality of clamp bodies 111 that cooperate with the body 110. The body 110 is provided with a plurality of connection ports that are electrically connected to the main control component. The number of connection ports is the same as the number of clamp bodies 111 and they are matched one by one. Each clamp body 111 is connected to the corresponding connection port through a flexible connection line.

[0032] Specifically, several clamps 111 are connected to the body 110, and an alarm light is located on the clamp 111, so that multiple flexible connecting wires can be detected at the same time. Compared with the existing technology, this device is more efficient in detecting multiple flexible connecting wires.

[0033] In one embodiment, the body 110 is provided with a display component that is electrically connected to the main control component. The display component includes a plurality of display screens, the number of which is consistent with the number of clamps 111 and they are displayed in a one-to-one correspondence.

[0034] In one embodiment, the housing 110 includes a square shell, a louvered heat dissipation assembly disposed on the square shell, and an inwardly recessed hidden groove 112 disposed on one side of the square shell, with all connection ports located within the hidden groove 112.

[0035] In one embodiment, several connection ports are evenly distributed in a straight line along the interior of the hidden groove 112.

[0036] In one embodiment, each clamp 111 is provided with an alarm component 113 that is electrically connected to the main control component.

[0037] In one embodiment, the alarm component 113 includes a light indicator unit for alarm notification, which is a plurality of LED alarm lights embedded in the housing of the clamp body 111.

[0038] Specifically, each clamp body 111 is equipped with an alarm light, which can help personnel quickly identify abnormal current flexible connection wires during maintenance operations.

[0039] In one embodiment, the alarm component 113 further includes a sound-emitting unit for alarm notification, which is a buzzer alarm.

[0040] In one embodiment, each flexible connecting line includes a connector head connected to a corresponding connector port, a first connecting straight line connected to the connector head, a threaded coiled line connected to the first connecting straight line, and a second connecting straight line connected to the threaded coiled line. The second connecting straight line is connected to a connecting end connected to a corresponding clamp body 111.

[0041] The flexible connecting wires connecting the body 110 and the clamp 111 are separate connectors with connector ports.

[0042] In one implementation, the length of the threaded coil is greater than 1 / 2 of the length of the corresponding flexible connecting line.

[0043] In one embodiment, each clamp 111 includes an outer shell, two clamping units disposed inside the outer shell, and a control button for controlling the openings of the two clamping units. The two clamping units extend out of the outer shell, and semi-circular clamping grooves are provided on opposite sides of the two clamping units extending out of the outer shell.

[0044] In one embodiment, the housing is provided with auxiliary control components.

[0045] Example 1 This utility model provides a multi-channel clamp ammeter, including a body 110 with a display component and a main control component, and clamps 111. The control component consists of a button or knob component. The body 110 is connected to multiple clamps 111 by a flexible connecting wire. An alarm component 113 is provided on the clamp 111, and the alarm component 113 includes an internal alarm light. At least half of the flexible connecting wire of the clamp 111 is spirally coiled. The surface of the clamp 111 is provided with auxiliary control components. The alarm component 113 also includes a sound unit for alarm reminder.

[0046] In use, clamp 111 is sequentially placed on the outside of the multiple flexible connecting wires to be tested. Then, the main control component of the machine body 110 or the auxiliary control component of clamp 111 is operated. During maintenance, it is fixed on the terminal block as an alarm device. When an abnormality is detected, the sound unit of the alarm component 113 will sound an alarm and the alarm light will flash.

[0047] Example 2 Refer to the attached diagram in the instruction manual. Figure 1 The difference between this embodiment and the previous embodiment is that the flexible connecting wires of the body 110 and the clamp 111 are connected by separate connectors, and the connectors are evenly distributed in a straight line along the surface of the body 110. The display unit of the body 110 includes several display screens, the number of which is consistent with the number of clamps 111. When the connector is not connected, the screen connector is in a closed state. When the connector is inserted into the connector, the corresponding screen is in a constantly lit state. A hidden slot 112 is provided on the body 110, and the connector area of ​​the body 110 is placed therein. The length of the hidden slot 112 is greater than the length of the connector of the flexible connecting wire of the clamp 111. In use, according to the actual number of flexible connecting wires to be tested, the connectors of the flexible connecting wires of the clamp 111 are inserted into the connectors of the body 110 in sequence.

Claims

1. A multi-channel clamp-on ammeter, characterized in that, It includes a body (110), a main control component disposed inside the body (110), and a plurality of clamps (111) that cooperate with the body (110). The body (110) is provided with a plurality of connection ports that are electrically connected to the main control component. The number of connection ports is the same as the number of clamps (111) and they cooperate one by one. Each clamp (111) is connected to the corresponding connection port through a flexible connection line.

2. A multi-channel clamp-on ammeter according to claim 1, characterized in that, The body (110) is provided with a display component that is electrically connected to the main control component. The display component includes a plurality of display screens, the number of which is consistent with the number of clamps (111) and they are displayed in a one-to-one correspondence.

3. A multi-channel clamp-on ammeter according to claim 1, characterized in that, The body (110) includes a square shell, a louvered heat dissipation assembly disposed on the square shell, and an inwardly recessed hidden groove (112) disposed on one side of the square shell, all of the connection ports being located within the hidden groove (112).

4. A multi-channel clamp-on ammeter according to claim 3, characterized in that, Several of the connection ports are evenly distributed in a straight line inside the hidden groove (112).

5. A multi-channel clamp-on ammeter according to claim 1, characterized in that, Each clamp body (111) is provided with an alarm component (113) that is electrically connected to the main control component.

6. A multi-channel clamp-on ammeter according to claim 5, characterized in that, The alarm component (113) includes a light indicator unit for alarm reminder, which is a plurality of LED alarm lights embedded in the housing of the clamp body (111).

7. A multi-channel clamp-on ammeter according to claim 5, characterized in that, The alarm component (113) also includes a sound-emitting unit for alarm notification, which is a buzzer alarm.

8. A multi-channel clamp-on ammeter according to claim 1, characterized in that, Each of the flexible connecting lines includes a connector head connected to the corresponding connector port, a first connecting straight line connected to the connector head, a threaded coiled line connected to the first connecting straight line, and a second connecting straight line connected to the threaded coiled line. The second connecting straight line is connected to a connecting end connected to the corresponding clamp body (111). The flexible connecting wires connecting the body (110) and the clamp (111) are separate connectors with connector ports.

9. A multi-channel clamp-on ammeter according to claim 8, characterized in that, The length of the spiral thread is greater than 1 / 2 of the length of the corresponding flexible connecting line.

10. A multi-channel clamp-on ammeter according to claim 1, characterized in that, Each clamp body (111) includes an outer shell, two clamping units disposed inside the outer shell, and a control button for controlling the openings of the two clamping units. The two clamping units extend out of the outer shell, and semi-circular clamping grooves are provided on opposite sides of the two clamping units extending out of the outer shell.

Images