CN213660997U

CN213660997U - Metering box suitable for 24KV overhead line

Info

Publication number: CN213660997U
Application number: CN202022047403.5U
Authority: CN
Inventors: 周平江; 姚伟; 陈奋创
Original assignee: Shenzhen Chuangyin Technology Co ltd
Current assignee: Shenzhen Chuangyin Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-07-09
Anticipated expiration: 2030-09-17

Abstract

The utility model provides a batch meter suitable for 24KV overhead line, including mutual-inductor body, high-voltage fuse, guard shield, box subassembly, mounting bracket, ground connection mounting panel, arrester and binding clip, high-voltage fuse installs in the fusible core section of thick bamboo of mutual-inductor body, the mutual-inductor body is fixed on the box subassembly, by three single-phase current-voltage combined transformer according to the looks interval distribution, the guard shield is installed on the box subassembly, the mounting bracket is installed on the box subassembly, the arrester seat that the arrester high-voltage terminal passes through the mutual-inductor body is installed on the mutual-inductor body, the binding clip passes through the conducting rod fixed mounting of mutual-inductor body be in on the mutual-inductor body, ground connection mounting panel is connected ground connection with the N end and the arrester earthing terminal of mutual-inductor body. The utility model has the advantages that: the device has the advantages of electricity larceny prevention, easy integral test, convenient and accurate measurement.

Description

Metering box suitable for 24KV overhead line

Technical Field

The utility model relates to an overhead line batch meter technical field, in particular to batch meter suitable for 24KV overhead line.

Background

Along with the demand to electric power is bigger and bigger, electric power system uses high-voltage metering box to be a not only simple but also convenient measurement mode, and present high-voltage metering box product generally has following several measurement modes:

2 or 3 single-phase pouring type voltage transformers and 2 or 3 single-phase current transformers, components of the transformer are assembled in a split mode, the transformer is complex to install, the assembling size is large, a metering box needs to be arranged independently, elements in the metering box are simple to set, voltage and current signals of a circuit can only be collected, and the anti-theft function is omitted.

2 or 3 single-phase pouring type voltage transformers and 2 or 3 single-phase current transformers are assembled in the metal shell in a split mode, sufficient insulation space is reserved in the shell, the size of a product box body is large, the installation of the internal transformers is complex, a metering box is installed outside the metal shell, elements in the metering box are simple to set, only voltage and current signals of a circuit can be collected, and the anti-electricity-theft function is omitted.

Adopt the integrative combined type mutual-inductor of oily formula three-phase and the integrated structural style of batch meter outside the casing, the product contains insulating oil, and seal structure is complicated, has the hidden danger of oil leak polluted environment, needs periodic maintenance, and the product weight is heavy, and the component sets up simply in the batch meter, can only gather the voltage and the current signal of circuit, does not have the function of thief-proofly.

The metering modes of the overhead lines have the advantages of large volume, heavy weight, difficulty in installation, simple setting of metering box elements, no electricity stealing prevention function, safety and difficulty in overall verification.

Disclosure of Invention

To above problem, the utility model discloses an aim at has designed a compact, and the integration, creepage distance is big, and from taking built-in high-voltage fuse, the arrester, has designed anti-electricity-theft device and communication interface in the box subassembly, fine solution protection slow, anti-electricity-theft difficulty, technical problem such as whole test difficulty are realized through following technical scheme.

The utility model provides a 24kV prevents electric larceny built on stilts integral type batch meter, include: mutual-inductor body, high-voltage fuse, guard shield, box subassembly, mounting bracket and ground connection mounting panel, the arrester, the binding clip, high-voltage fuse installs in the fusible core section of thick bamboo of mutual-inductor body, the mutual-inductor body is fixed on the box subassembly, the guard shield is installed on the box subassembly, the mounting bracket is installed on the box subassembly, the arrester seat that mutual-inductor body was passed through to the arrester high-voltage end is installed on the body, the binding clip passes through the conducting rod fixed mounting of mutual-inductor body be in on the mutual-inductor body, ground connection is connected with mutual-inductor body's N end and arrester earthing terminal to the ground connection mounting panel.

It is specific the high voltage fuse is removable high voltage fuse, the arrester is removable arrester.

The box body assembly, the protective cover and the mounting frame are integrally arranged, a box door of the box body assembly is provided with a damper supporting rod, and a damper is arranged on the supporting rod.

The utility model has the advantages that: the device has the advantages of electricity larceny prevention, easy integral test, convenient and accurate measurement.

Drawings

Fig. 1 is a schematic structural diagram of a metering box in the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the box assembly of the present invention.

Fig. 3 is a schematic diagram of the connection of the binding post of the watt-hour meter of the present invention.

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

1-a transformer body; 2-a high voltage fuse; 3-a shield; 4-a box assembly; 5-mounting a frame; 6-a grounding mounting plate; 7-a lightning arrester; 8-a jointing clamp; the low-voltage wiring terminal 41, the watt-hour meter 42, the proximity sensor 43, the communication interface 44, the corrector 45, the current converter 46, the communication alarm module 47 and the damper support rod 48. Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a 24kV prevents electric larceny built on stilts integral type batch meter, please refer to fig. 1, including mutual-inductor body 1, high tension fuse 2, guard shield 3, box subassembly 4, mounting bracket 5, ground connection mounting panel 6, arrester 7 and binding clip 8, high tension fuse 2 installs in mutual-inductor body 1's fusion tube, mutual-inductor body 1 fixes on box subassembly 4, guard shield 3 installs on box subassembly 4, mounting bracket 5 installs on box subassembly 4, arrester 7 installs on body 1 through mutual-inductor body 1's arrester seat, binding clip 8 passes through mutual-inductor body 1's conducting rod fixed mounting be in on mutual-inductor body 1, ground connection mounting panel 6 is connected ground connection with mutual-inductor body 1's N end and arrester 7 earthing terminal.

The anti-electricity-theft metering box is mainly installed on a 24kV overhead line, a wiring terminal of the overhead line is connected with a binding clip 8 of a combined type mutual inductor in the metering box, a replaceable high-voltage fuse 2 and an arrester 7 are arranged at a high-voltage end of the combined type mutual inductor in the metering box, so that current elements of the combined type mutual inductor in the metering box are connected in series in the line, voltage elements are connected in parallel in the line, current and voltage signals of the line are respectively collected from a low-voltage part of the mutual inductor, and the primary high-voltage fuse 2 and the arrester 7 of the metering box can protect the impact damage of overvoltage and overcurrent caused by the fault of the line on the combined type mutual. This batch meter has the work load that the circuit was maintained from the integrated design of taking high voltage fuse and arrester, significantly reduced, simple to operate, the operation is reliable.

24kV anti-electricity-theft built on stilts integral type batch meter is by 3 single-phase combination formula mutual-inductor bodies 1, high-voltage fuse 2 (every looks high-voltage terminal is from taking), guard shield 3, box subassembly 4 (contains low voltage binding post, the kilowatt-hour meter, the current converter, the corrector, proximity sensor, the communication interface), mounting bracket 5, ground connection mounting panel 6, arrester 7, the built on stilts mounting structure of binding clip 8 constitution integral type, the batch meter is small, light in weight, simple to operate, mounting bracket 5 and the pre-buried pole of power line, the locking of installation device on the post, the binding clip 8 at mutual-inductor both ends concatenates respectively in every looks circuit, the voltage standard secondary signal of the circuit that will gather through combination formula mutual-inductor connects into the voltage circuit of kilowatt-hour meter in the batch meter, the current circuit that the standard current signal that will gather. The kilowatt-hour meter carries out active and reactive measurement through calculating the standard current voltage signal that gathers, and the user passes through communication interface, and the corrector wholly carries out the precision check-up to batch meter (including current-voltage transformer, kilowatt-hour meter), need not unpack apart the high-voltage batch meter and check-up respectively to mutual-inductor and kilowatt-hour meter, has guaranteed the precision of whole measurement. With proximity sensor and intelligent kilowatt-hour meter cooperation use, can send out the warning or cut off the power supply when people or object move apart from the unexpected distance of batch meter safety, the effectual emergence of preventing to steal the electricity incident.

As shown in fig. 2, the box opening door of the box body component 4 is provided with a damper support rod 48, so that the box door can be opened at a preset speed, and the door control switch is arranged on the box body component 4, so that the purpose of electricity larceny prevention can be achieved.

The box subassembly includes: the low-voltage wiring terminal 41, the watt-hour meter 42, the current converter 46, the corrector 45, the proximity sensor 43, the communication interface 44 and other electrical components which are connected by a circuit, wherein, the box door and the box body of the box body component are connected by a damper supporting rod 48, the damper supporting rod 48 is a hydraulic telescopic rod, and the low-voltage wiring terminal is arranged at the bottom in the box body and is used for being connected with a 24KV overhead line; the electric meter is arranged on the box door, the window of the electric meter can be displayed through the window or the transparent panel of the box door, the proximity sensor 43 is arranged on the box door, the head of the sensor is arranged on the box door, the proximity sensor 43 can adopt one of a magnetic induction type proximity switch, an inductive type proximity switch or a capacitance type proximity switch, and can detect the approaching object. Still be provided with in the case door: the device comprises a corrector 45, a current converter 46, a communication interface 44 and the like, wherein the communication interface adopts an RS-232 or RS485 serial interface, the current converter 46 is connected with a loop of the electric meter, and the corrector is connected with the electric meter.

The communication interface can be externally connected with a portable computer, and an electric power control system in the computer is communicated with the electric meter in the box body to integrally test the electric meter. The watt-hour meter is verified through the current converter and the corrector, and the integral metering precision is guaranteed.

The proximity sensor 43 is in electrical connection with a communication alarm module 47 to which signals generated by the proximity sensor are sent, the communication alarm module comprising a GPRS module for transmitting signals generated by the proximity sensor 43 to the master station via the GPRS module. The master station may monitor several similar electronic boxes.

As shown in fig. 3, the watt-hour meter 42 is an intelligent watt-hour meter, in which a part of terminals are used for detecting tripping and alarming (including approach alarming; door opening alarming of a box body assembly; voltage loss and current loss alarming, etc.), and the watt-hour meter is also connected with a corrector and a current converter; is connected with an external computer through an RS485 interface and is used for communication.

The utility model discloses effectively solved 24KV overhead line in measure the electric energy difficulty, protection mutual-inductor line structure is complicated, and anti-electricity-theft degree of difficulty is big and whole metering error is big, shortcoming such as precision difference, the utility model relates to a line overcurrent overvoltage protection is gathered, anti-electricity-theft device is in integrative structure, and is small, light in weight, measurement, simple to operate has solved many technical bottlenecks of 24KV overhead line measurement, and the measurement case device has whole operation safety, and is reliable, many advantages such as measurement check-up convenience.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a batch meter suitable for 24KV overhead line, its characterized in that, includes mutual-inductor body, high-voltage fuse, guard shield, box subassembly, mounting bracket, ground connection mounting panel, arrester and binding clip, high-voltage fuse installs in the fusible core section of thick bamboo of mutual-inductor body, the mutual-inductor body is fixed on the box subassembly, by three single-phase current-voltage mutual-inductors according to the looks interval distribution, the guard shield is installed on the box subassembly, the mounting bracket is installed on the box subassembly, the arrester seat that the arrester high-voltage end passes through the mutual-inductor body is installed on the body, the binding clip passes through the conducting rod fixed mounting of mutual-inductor body on the mutual-inductor body, ground connection mounting panel and the N end and the arrester earthing terminal connection ground connection of mutual-inductor.

2. The metering box of claim 1, wherein the high voltage fuse is a replaceable high voltage fuse and the surge arrester is a replaceable surge arrester.

3. The metering box of claim 1, wherein the box assembly comprises a low voltage terminal, a watt-hour meter, a current converter, a corrector, a proximity sensor and a communication interface electrical element, wherein the low voltage terminal, the current converter, the corrector and the communication interface are connected with terminals on a circuit meter, and the proximity sensor is arranged on the box assembly and connected with the communication alarm module.

4. The batch tank of claim 3, wherein the tank assembly is integrally formed with the shroud and the mounting bracket, and wherein the tank door of the tank assembly is provided with a damper support bar.