CN207730925U - Electric energy meter field examines voltage sampling apparatus - Google Patents

Abstract

The utility model provides a voltage sampling device for on-site inspection of electric energy meters, which belongs to the technical field of on-site inspection of electric energy meters in electric power metering, and comprises a fixed plate, a voltage sampling mechanism and a connecting mechanism; several through holes are arranged on the fixed plate, and the fixed Both ends of the board are provided with screw holes; the voltage sampling mechanism includes several voltage test lines, one end of the voltage test line is connected with a stretchable probe, and the other end of the voltage test line is connected with a through-hole plug; The connecting mechanism includes a nut fixed in the through hole, and the stretchable probe is provided with a thread matched with the nut. The utility model can solve the difficult problem of sampling failure caused by the crocodile clip clamping the voltage screw not firmly, and is simple in manufacture and convenient in use, and improves the working efficiency of the electric energy meter on-site inspection.

Description

Voltage Sampling Device for Field Inspection of Electric Energy Meter

technical field

The utility model relates to the technical field of on-site inspection of electric energy meters in electric power metering, in particular to a voltage sampling device for on-site inspection of electric energy meters.

Background technique

As an important part of the electric energy metering device, the error change of the electric energy meter during operation will directly affect the accuracy of electric energy metering. In order to grasp the pass rate of on-site operation of electric energy metering devices in a timely manner, according to the requirements of DL/T448-2000 "Technical Management Regulations for Electric Energy Metering Devices", class I-IV electric energy metering devices that meet certain load conditions should be tested on site within a specified time period. The energy meter in the test is carried out with real load.

Usually, the voltage sampling method of the on-site calibrator in the on-site inspection of the electric energy meter is to fix it on the voltage screw of the terminal button box of the electric energy meter with an alligator clip. The button box voltage screw is not in firm contact with the crocodile clip, etc., often causing the crocodile clip to collapse during the inspection process; or the voltage screw is not firmly clamped by the crocodile clip for a long time, resulting in the failure of voltage sampling, which will lead to a low success rate of voltage sampling once and prolong the test period. On-site inspection time; there may even be a voltage short circuit accident during the alligator clip avalanche. Therefore, it is imminent to seek a safe and reliable voltage sampling method.

The patent document with the publication number CN106054103A discloses a three-phase electric energy meter field inspection voltage wiring device, which includes a panel, a side plate, a rubber pad, a metal probe, a voltage test line and a crimping handle. Both ends on one side of the panel are vertical The side plates are fixed, and a rubber pad is fixed on the inner side of the middle of the two side plates; four metal probes protrude from the panel facing the side plate at intervals, and the other ends of the four metal probes are respectively connected to the Four voltage test wires to the other side of the panel; a crimping handle is installed in the middle of the panel where the voltage testing wires are installed, and a hinge drive mechanism is installed between the crimping handle and the probe. The utility model connects the voltage wire of the voltage wiring device to the verification device when performing on-site inspection of the three-phase electric energy meter, fixes the other end with the electric energy meter, aligns the probe with the voltage terminal of the electric energy meter, and presses down the crimping handle , so that the probes are in close contact with the voltage terminals, the inspection work can be carried out, but the metal probes of this device protrude from the panel of the side plate at intervals, and are in contact with the four voltage terminals of the electric energy meter, and the metal probes are easy to loosen , poor contact with the voltage terminal, resulting in voltage sampling failure.

The patent with the notification number CN201993385U discloses an electric energy meter detection plug-in device and an electric energy meter detection system, including: a bottom plate; a fixing part arranged at one end of the bottom plate; a clamping part connected to the other end of the bottom plate to fix the electric energy meter; The left link and the right link hinged on both sides of the fixed part; the left guide rail connected with the left link; the right guide rail connected with the right link; the first positioning piece, the second positioning piece, the third positioning piece, the fourth The positioning piece, the fifth positioning piece and the sixth positioning piece; the probe base; the probe set on the probe base, which can be inserted into the voltage terminal interface and the auxiliary terminal interface. The structure of the device is complex. The electric energy meter is fixed by tightening parts and fixing parts. The connecting rod is arranged on the fixing part, and the connecting rod is connected to the guide rail. The probe is set in the socket of the probe base and connected to the voltage terminal. Once any small part appears The problem will affect the voltage sampling and affect the work efficiency. In addition, before the test, it is necessary to fix the tightening parts and adjust each part. After the test, it is necessary to take a coffee break to restore the tightening parts to their original positions, which is very troublesome.

Contents of the invention

In view of this, the utility model provides a voltage sampling method and device for on-site inspection of electric energy meters, which can solve the problem of sampling failure caused by the crocodile clip not holding the voltage screw securely, and improve the work efficiency of on-site inspection of electric energy meters.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A voltage sampling device for on-site inspection of an electric energy meter, comprising a fixed plate, a voltage sampling mechanism and a connecting mechanism; several through holes are arranged on the fixed plate, and screw holes are arranged at both ends of the fixed plate; the voltage sampling mechanism includes Several voltage test lines, one end of the voltage test line is connected with a stretchable probe, and the other end of the voltage test line is connected with a straight-through hole plug; the connection mechanism includes a nut fixed in the through hole, the Threads matching the nut are provided on the stretchable probe.

Further, there are four through holes.

Further, there are four voltage test lines.

Further, the fixed board is a PVC board.

Further, the stretchable probe is made of copper material.

Further, the four voltage test lines and the through-hole plugs connected to the voltage test lines are respectively painted in four colors of yellow, green, red and black.

The beneficial effect of the utility model is that the utility model comprises three parts: a fixing plate, a voltage sampling mechanism and a connecting mechanism. Several through holes are arranged on the fixing plate, and screw holes are arranged at both ends of the fixing plate. The length and width of the fixing plate are consistent with the length and width of the electric energy meter terminal button box. The voltage sampling mechanism includes several voltage test lines. One end of the voltage test line is connected to a stretchable probe, which can be flexibly matched with the voltage screws at the end of the meter with different heights. The other end of the voltage test line is connected to a through-hole plug. The connection mechanism includes a nut fixed in the through hole, and a screw thread matched with the nut is arranged on the stretchable probe. The retractable probe is connected to the fixed plate through threads, and fixed on the voltage terminal interface of the terminal button box of the electric energy meter. The through-hole plug at the other end of the voltage test line is inserted into the on-site calibrator to perform voltage sampling.

There are 4 through holes, and the positions of the through holes correspond to the positions of the A, B, C, and N phase voltage screws on the terminal button box of the electric energy meter. There are 4 voltage test lines, which are A-phase voltage test line, B-phase voltage test line, C-phase voltage test line, and N-phase voltage test line. The fixed board is a PVC board, which is insulating, flame-retardant and corrosion-resistant. The stretchable probe is made of copper material, which has excellent electrical conductivity. The 4 voltage test lines and the through-hole plugs connected with the voltage test lines are respectively painted in four colors of yellow, green, red and black, representing phase A, phase B, phase C and phase N, which is convenient for wiring.

The utility model has the advantages of simple structure, easy processing, convenience, practicability and safety, solves the problem of voltage sampling failure caused by the crocodile clip clamping the voltage screw not firmly, and can improve the working efficiency of the field inspection of the electric energy meter. The stretchable probe at one end of the test line is connected to the fixed plate through threads, and the stretchable probe is connected to the voltage terminal interface of the terminal button box of the electric energy meter; the other end is connected to the on-site calibrator through the through plug hole, which is very firm . The utility model is convenient to use and simple to operate. When in use, just fix the screw holes at both ends of the fixing plate on the terminal button box of the electric energy meter with bolts, then fix the retractable probe on the fixing plate through screw connection, and insert it into the voltage terminal of the terminal button box of the electric energy meter Then connect the through-hole plug at the other end of the voltage test line to the on-site calibrator, so that the voltage sampling can be successfully carried out, so that the on-site inspection of the electric energy meter can be carried out conveniently and safely, which is convenient and fast, saves time, and at the same time, the device is easy to manufacture , low cost, very firm fixation, and improved detection efficiency.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic structural diagram of a field inspection voltage sampling device for an electric energy meter according to Embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of the fixing plate of Embodiment 1 of the present utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings 1-2 of the embodiment of the utility model. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

Embodiment one

As shown in Figures 1 and 2, this embodiment provides a voltage sampling device for field inspection of electric energy meters, including a fixed plate 3, a voltage sampling mechanism and a connecting mechanism; four through holes 7 are arranged on the fixed plate 3, so that Both ends of the fixed plate are provided with screw holes 6; the voltage sampling mechanism includes 4 voltage test lines 2, one end of the voltage test line 2 is connected to the scalability probe 5, and the other end of the voltage test line 2 Connect the straight-through hole plug 1; the connection mechanism includes a nut 8 fixed in the through hole 7, and the stretchable probe 5 is provided with a screw thread matching the nut 8.

Among them, the positions of the four through holes 7 on the fixed plate 3 match the positions of the A.B.C three-phase and N-phase voltage terminal interfaces on the terminal button box of the electric energy meter, so as to facilitate the fixed connection between the flexible probe 5 and the voltage terminals. The nut 8 is pressure riveted on the through hole 7, and the thread is engraved on the end of the telescopic probe 5 connected with the voltage test line 2, and is fixed in the through hole of the fixing plate and fixedly connected with the voltage terminal through screw connection.

Embodiment two

Referring to Fig. 1 , a field test voltage sampling device for an electric energy meter described in this embodiment is an improvement on the basis of Embodiment 1: the fixed plate 3 is a PVC plate. The stretchable probe 5 is made of copper material.

The fixed board is a PVC board, which is insulating, flame-retardant and corrosion-resistant. The stretchable probe is made of copper material, which has excellent electrical conductivity.

Embodiment Three

Referring to Fig. 1, a kind of electrical energy meter field inspection voltage sampling device described in this embodiment is an improvement on the basis of Embodiment 2: 4 voltage test lines, 2 and all the voltage test lines connected to the voltage test line 2 The said through-hole plug 1 is respectively coated with four colors of yellow, green, red and black.

The 4 voltage test lines and the through-hole plugs connected to the voltage test lines are painted in yellow, green, red and black respectively, representing phase A, phase B, phase C and phase N, which are easy to distinguish and convenient to connect.

Embodiment four

As shown in Fig. 1, a kind of method using described electric energy meter on-the-spot inspection voltage sampling device comprises the following steps:

S1: Fix the screw holes 6 at both ends of the fixing plate 3 to the terminal button box of the electric energy meter with bolts;

S2: Fix the stretchable probe 5 at one end of the voltage test line 2 into the nut 8 on the fixed plate 3 through screw connection, and insert the stretchable probe 5 into the voltage terminal interface on the terminal button box of the electric energy meter;

S3: Connect the through-hole plug 1 at the other end of the voltage test line 2 to the field calibrator.

The foregoing is a preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. a kind of electric energy meter field examines voltage sampling apparatus, it is characterised in that：Including fixed plate, voltage sampling mechanism and connection Mechanism；Several through-holes are set in the fixed plate, and the both ends of the fixed plate are respectively provided with screw hole；Voltage sampling mechanism packet Include several voltage tester lines, one end of the voltage tester line connects scalability probe, the voltage tester line it is another End connection clear opening plug；The bindiny mechanism includes the nut being fixed in the through-hole, is set on the scalability probe Set the screw thread to match with the nut.

2. electric energy meter field as described in claim 1 examines voltage sampling apparatus, it is characterised in that：The through-hole is 4.

3. electric energy meter field as described in claim 1 examines voltage sampling apparatus, it is characterised in that：The voltage tester line is 4.

4. electric energy meter field as described in claim 1 examines voltage sampling apparatus, it is characterised in that：The fixed plate is PVC Plate.

5. electric energy meter field as described in claim 1 examines voltage sampling apparatus, it is characterised in that：The scalability probe It is made of copper product.

6. electric energy meter field as claimed in claim 3 examines voltage sampling apparatus, it is characterised in that：4 voltage testers Line and the clear opening plug being connect with the voltage tester line are coated with yellow, green, red, black four colors respectively.