CN210015161U - Clamp type ammeter - Google Patents

Abstract

The utility model relates to a clamp-on ammeter, the clamp-on ammeter include clamp-on ammeter body, fixing device and locate the screw hole of the bottom surface of the clamp-on ammeter body, the screw hole can be used for fixing the clamp-on ammeter body on the panel of other equipment, the fixing device can fix the clamp-on ammeter body on other devices; the utility model discloses a do not advance the installation of clamp-on ammeter into the circuit of survey and also can realize the long-time measurement to the circuit, and can not produce parasitic loop, on clamp-on ammeter accessible screw hole was fixed in the panel of other equipment near the circuit that awaits measuring, also can directly be fixed in the cable that awaits measuring with clamp-on ammeter body simultaneously, long-time fixed when having realized the measurement of clamp-on ammeter, simultaneously, alarm device has been add to the clamp-on ammeter, has realized just the function of reporting to the police when the measured current value surpasss preset current value.

Description

Clamp type ammeter

Technical Field

The utility model relates to an electric power measuring tool field, more specifically relates to a tong-type ampere meter.

Background

The clamp-on ammeter is manufactured according to the action of magnetic field force exerted by an electrified conductor in a magnetic field, a permanent magnet is arranged in the clamp-on ammeter, a magnetic field is generated between electrodes, a coil is arranged in the magnetic field, two ends of the coil are respectively provided with a hairspring spring, the springs are respectively connected with a binding post of the clamp-on ammeter, the springs and the coil are connected through a rotating shaft, and a pointer is arranged at the front end of the rotating shaft opposite to the clamp-on ammeter; when current passes through the coil, the current passes through a magnetic field along the spring and the rotating shaft, and the current cuts the magnetic induction line, so that the coil deflects under the action of the magnetic field force to drive the rotating shaft and the pointer to deflect; since the magnitude of the magnetic field force increases with the increase of the current, the magnitude of the current can be observed through the deflection degree of the pointer, and the clamp type ammeter is required to be connected into a loop to be measured in series and is used for measuring by introducing the current.

The conventional fixedly-installed clamp ammeter needs to be connected in series with a loop for wiring, and the measurement can not be completed without influencing the installed loop like a clamp direct current clamp ammeter. For example, in a built substation, the change of the secondary circuit wiring may require power failure, and a parasitic circuit is easily generated, so that it is difficult and hidden trouble to add a clamp ammeter in the change of the circuit of the built substation equipment.

The conventional clamp type direct current clamp ammeter is only convenient to hold and move for use and is inconvenient to fix at a certain point for long-time measurement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned prior art the fixed inconvenient defect of jaw type ampere meter, provide a jaw type ampere meter.

The clamp-on ammeter comprises a clamp-on ammeter body, a clamp head, a fixing device and a screw hole arranged on the bottom surface of the clamp-on ammeter body, wherein the screw hole can be used for fixing the clamp-on ammeter body on panels of other equipment, and the fixing device can be used for fixing the clamp-on ammeter body on other devices; the binding clip is connected with the ammeter body through the test wire, and the binding clip is connected with the ammeter body through the test wire, so that the binding clip can test lines in all directions under the condition that the ammeter body is fixed, and the binding clip is flexible and convenient.

The clamp ammeter is additionally provided with the fixing device, so that the clamp ammeter can flexibly measure the current at the required position, when long-time measurement is needed, the clamp ammeter body can be fixed on the panel of other nearby equipment by using screws, and when other equipment with the panel is not arranged nearby, the clamp ammeter body can be directly fixed on other fixable equipment or a measured cable through the fixing device.

Preferably, the fixing device is a turnbuckle fixed on the surface of the body of the clamp-on ammeter, and the turnbuckle is common and low in manufacturing cost.

Preferably, the turnbuckle is fixed on the bottom surface of the clamp-on ammeter body, so that the display screen of the clamp-on ammeter is not shielded, and the reading of data by workers is facilitated.

Preferably, be equipped with the head between the body bottom surface of turnbuckle and jaw-type ampere meter body, the turnbuckle is connected with the head, and the head is fixed in the bottom surface of jaw-type ampere meter body, and rotatory turnbuckle can make the turnbuckle move about to pressing close to the bottom surface of jaw-type ampere meter body, and when need not use the turnbuckle, can rotate the turnbuckle to pressing close to the bottom surface of jaw-type ampere meter body, can save space, simultaneously, when not being suitable for the turnbuckle and when using the screw hole, the turnbuckle does not hinder the installation of turnbuckle.

Preferably, the screw hole locate on the angle of the bottom surface of jaw-type ampere meter body, be convenient for the installation, the staff of being convenient for simultaneously reads data.

Preferably, the number of the screw holes on the bottom surface of the clamp-on ammeter body is 4, and the screw holes are respectively arranged on 4 corners of the bottom surface of the clamp-on ammeter body, so that the clamp-on ammeter can be fixed more stably when being fixed on other equipment panels.

Preferably, four corners of the clamp-on ammeter body are provided with protruding parts, and the protruding parts and the bottom surface of the clamp-on ammeter body are in the same plane; the protruding part is used for forming a screw hole and is provided with a turnbuckle, so that the clamp-on ammeter can be conveniently installed.

Preferably, the clamp-on ammeter is further provided with an alarm device, the alarm device is integrated in the clamp-on ammeter body, and when the measured current exceeds a preset value, the alarm device is started to give an alarm so as to remind a worker.

Preferably, the alarm device comprises a relay, an indicator light, a buzzer and a reset switch;

the alarm device is also provided with a trigger switch, and when the current value measured by the clamp ammeter exceeds a preset value, the clamp ammeter controls the trigger switch to be closed;

one end of the reset switch is connected with one end of the power supply, the other end of the reset switch is connected with one end of the trigger switch, the other end of the trigger switch is connected with one end of the coil of the relay, and the other end of the coil of the relay is connected with the other end of the power supply;

the normally open contact of the relay is connected with the contact switch in parallel;

the indicator light and the buzzer are respectively connected with the coil of the relay in parallel.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is: the utility model discloses a do not advance the installation of clamp-on ammeter measured circuit and also can realize the long-time measurement to the circuit, and can not produce parasitic loop, on clamp-on ammeter body accessible screw hole was fixed in the panel of other equipment near the circuit that awaits measuring, also can directly be fixed in the cable that awaits measuring with clamp-on ammeter body simultaneously, long-time fixed when having realized the measurement of clamp-on ammeter, simultaneously, alarm device has been add to the clamp-on ammeter, has realized just reporting to the police when the measured current value surpasss preset current value function.

Drawings

Fig. 1 is a schematic view of a clamp ammeter described in embodiment 1.

Fig. 2 is a schematic view of the clamp ammeter described in embodiment 2.

Fig. 3 is a schematic circuit diagram of an alarm device of the clamp ammeter described in embodiment 2.

The device comprises a clamp-type ammeter body 1, a screw hole 2, a fixing device 3, a movable device 4, a protruding part 5, a K1 trigger switch, a K2 reset switch, a KM relay, a KM2 coil, a KM1 normally open contact, an L-indicator light and an HL-buzzer.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;

it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Example 1:

the embodiment provides a clamp-on ammeter, which comprises a clamp-on ammeter body 1, a clamp head 7, a fixing device 3 and a screw hole 2 arranged on the bottom surface of the clamp-on ammeter body 1, wherein the screw hole 2 can be used for fixing the clamp-on ammeter body on a panel of other equipment, and the fixing device 3 can be used for fixing the clamp-on ammeter body on other equipment; the clamp head 7 is connected with the ammeter body 1 through a test wire.

When the clamp-on ammeter is used, the clamp head 7 of the clamp-on ammeter is clamped on a cable or a wire to be measured, the ammeter body 1 is fixed on other equipment panels through the screw hole 2 on the bottom surface of the clamp-on ammeter body 1, or the ammeter body 1 is fixed on the cable or the wire to be measured through the fixing device 3.

Example 2:

the embodiment provides a clamp-on ammeter, which comprises a clamp-on ammeter body 1, a clamp head 7, a fixing device 3 and a screw hole 2 arranged on the bottom surface of the clamp-on ammeter body 1, wherein the screw hole 2 can be used for fixing the clamp-on ammeter on a panel of other equipment, and the fixing device 3 can be used for fixing the clamp-on ammeter on other equipment; the clamp head 7 is connected with the ammeter body 1 through a test wire.

The fixing device 3 is a turnbuckle fixed on the surface of the clamp-on ammeter body 1.

The turnbuckle is fixed on the bottom surface of the clamp-on ammeter body 1.

A movable device 4 is arranged between the turnbuckle and the bottom surface of the clamp-on ammeter body 1, the turnbuckle is connected with the movable device 4, the movable device 4 is fixed on the bottom surface of the clamp-on ammeter body 1, and the turnbuckle can be moved to be close to the bottom surface of the clamp-on ammeter body 1 by rotating the turnbuckle.

The screw hole 2 is arranged on the corner of the bottom surface of the clamp-on ammeter body 1.

The number of the screw holes 2 on the bottom surface of the clamp-on ammeter body 1 is 4, and the screw holes are respectively arranged on 4 corners of the bottom surface of the clamp-on ammeter body 1.

The clamp-on ammeter comprises a clamp-on ammeter body 1, wherein four corners of the clamp-on ammeter body 1 are provided with protruding parts 5, and the protruding parts 5 and the bottom surface of the clamp-on ammeter body 1 are in the same plane; the protruding part 5 is used for forming the screw hole 2.

The clamp-on ammeter is further provided with an alarm device, and the alarm device is integrated in the clamp-on ammeter.

The alarm device comprises a relay KM, an indicator lamp L, a buzzer HL and a reset switch K2;

the alarm device is also provided with a trigger switch K1, and when the current value measured by the clamp ammeter exceeds the preset value, the clamp ammeter controls the trigger switch K1 to be closed.

One end of the reset switch K2 is connected with one end of a power supply, the other end of the reset switch K2 is connected with one end of a trigger switch K1, the other end of the trigger switch K1 is connected with one end of a coil KM2 of the relay KM, and the other end of the coil KM2 of the relay KM is connected with the other end of the power supply;

a normally open contact KM1 of the relay KM is connected with a contact switch K1 in parallel;

the indicator lamp L and the buzzer HL are respectively connected with the coil KM2 of the relay KM in parallel.

When the clamp-on ammeter is used, a current value is set on the clamp-on ammeter, then a clamp head 7 of the clamp-on ammeter is clamped on a circuit to be tested, and then the clamp-on ammeter body 1 is fixed on other devices or cables through a screw hole 2 or a turnbuckle.

When the value of the current measured by the clamp ammeter exceeds a preset value, the alarm device starts to alarm, the alarm indicator lamp is turned on, the buzzer sends out an alarm sound, and a worker can perform inspection operation after hearing the alarm sound or seeing the alarm indicator lamp, and resets the alarm device by pressing the reset switch.

The same or similar reference numerals correspond to the same or similar parts;

the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;

it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. A clamp-on ammeter is characterized by comprising a clamp-on ammeter body, a clamp head, a fixing device and a screw hole arranged on the bottom surface of the clamp-on ammeter body, wherein the screw hole can be used for fixing the clamp-on ammeter body on panels of other equipment, and the fixing device can be used for fixing the clamp-on ammeter body on other devices; the clamp head is connected with the ammeter body through a test wire.

2. The current clamp meter of claim 1, wherein the fastening means is a turnbuckle fastened to the surface of the current clamp meter body.

3. The current clamp according to claim 2, wherein the turnbuckle is fixed to the bottom surface of the current clamp body.

4. The current clamp meter according to claim 3, wherein a movable device is arranged between the turnbuckle and the bottom surface of the current clamp meter body; the turnbuckle is connected with the movable device, the movable device is fixed on the bottom surface of the clamp-on ammeter body, and the turnbuckle can be moved to be close to the bottom surface of the clamp-on ammeter body by rotating the turnbuckle.

5. The current clamp meter of claim 1, wherein the screw hole is formed at a corner of the bottom surface of the current clamp meter body.

6. The current clamp meter according to claim 5, wherein the number of the screw holes on the bottom surface of the current clamp meter body is 4, and the screw holes are respectively arranged on 4 corners of the bottom surface of the current clamp meter body.

7. The current clamp meter according to claim 1, wherein the current clamp meter body is provided with protruding parts at four corners, and the protruding parts and the bottom surface of the current clamp meter body are in the same plane; the protruding part is used for forming a screw hole.

8. The current clamp meter according to claim 1, wherein the current clamp meter is further provided with an alarm device, and the alarm device is integrated in the current clamp meter.

9. The current clamp meter according to claim 8, wherein the alarm device comprises a relay, an indicator light, a buzzer, a reset switch;

the alarm device is also provided with a trigger switch, and when the current value measured by the clamp ammeter exceeds a preset value, the clamp ammeter controls the trigger switch to be closed;

one end of the reset switch is connected with one end of the power supply, the other end of the reset switch is connected with one end of the trigger switch, the other end of the trigger switch is connected with one end of the coil of the relay, and the other end of the coil of the relay is connected with the other end of the power supply;

the normally open contact of the relay is connected with the contact switch in parallel;

the indicator light and the buzzer are respectively connected with the coil of the relay in parallel.

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