Outdoor safety type high-precision electronic metering combined sensor

Abstract

An outdoor safe high-precision electronic combined sensor for metering belongs to the technical field of electronic sensors, and is characterized in that an ECTX electronic zero sequence current sensor, an ECTC electronic phase sequence current sensor, a primary loop, an EVTX electronic zero sequence voltage sensor and an EVTC electronic phase sequence voltage sensor are arranged in a metal forming shell; the ECTX electronic zero sequence current sensor, the ECTC electronic phase sequence current sensor, the EVTX electronic zero sequence voltage sensor and the EVTC electronic phase sequence voltage sensor are connected to a primary loop, and the primary loop is connected with an external device of the metal forming shell through a primary wire inlet terminal and a primary wire outlet terminal. The electronic mutual inductor is installed integrally instead of being separated in the past, space and materials are saved, safety and reliability are achieved, the accuracy and the service life are effectively guaranteed, the situation that overall replacement is needed when one part is damaged in the past is avoided, the probability of part damage is reduced, the space is reduced, reliability and operation safety are improved, and main environment-friendly metering parameters are more stable.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic sensors, and in particular relates to a combination sensor for outdoor safety and high-precision electronic measurement. Background Art

[0002] In recent years, outdoor electronic sensors have been successfully applied to power systems with their simple structure, few parts, high reliability, high precision, long service life, environmental protection, and stable electrical signals. At present, the structure of electronic sensors is developing in a diversified direction, and the disclosure of numerous patent technologies has promoted the continuous improvement of electronic sensor technology. Although these patent technologies are relatively advanced, they are relatively complicated in the manufacturing process and assembly, especially when current and voltage sensors are required at the same time, they are large in size and have many parts, and the measurement of electrical signals is inaccurate, which has become the main crux of the current products. The large design volume wastes raw materials and is cumbersome and labor-intensive. The live body is exposed, which poses a great safety hazard to line operation. Long-term outdoor rain and ultraviolet and air corrosion can easily cause excessive partial discharge and aging of electronic components in the sensor, resulting in sensor damage and equipment operation safety.

[0003] At present, the domestic method mainly adopts the method of installing the switch casing separately, and adding it to the front and back, which is bulky and not conducive to miniaturization. For example, the prior art CN109683004B discloses a combined electronic sensor, which improves the sensitivity of the sensor by providing multiple sets of conductive rods, and can obtain higher measurement accuracy. However, once a fault or damage occurs, the entire assembly needs to be replaced, resulting in errors in subsequent matching, inaccurate measurement, and unsafe equipment and personnel. In addition, the accuracy of the prior art is unstable, and the output signal after collection is easily interfered by electromagnetic interference, and misjudgment often occurs. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present invention proposes: a combination sensor for outdoor safe high-precision electronic metering, including a metal molded shell, in which the metal molded shell is equipped with an ECTX electronic zero-sequence current sensor, an ECTC electronic phase-sequence current sensor, a primary circuit, an EVTX electronic zero-sequence voltage sensor, and an EVTC electronic phase-sequence voltage sensor. The ECTX electronic zero-sequence current sensor, the ECTC electronic phase-sequence current sensor, the EVTX electronic zero-sequence voltage sensor, and the EVTC electronic phase-sequence voltage sensor are connected to the primary circuit, and the primary circuit is connected to the external devices of the metal molded shell through a primary incoming terminal and a primary outgoing terminal.

[0005] Furthermore, the metal molded shell is molded in one step.

[0006] Furthermore, the interior of the metal molded shell is filled with environmentally friendly gas as insulation.

[0007] Furthermore, anti-condensation protection is provided on the electronic components inside the metal molded shell.

[0008] Furthermore, the electronic components inside the metal molded shell are coated with anti-corrosion material.

[0009] Furthermore, the ECTX electronic zero-sequence current sensor, the ECTC electronic phase-sequence current sensor, the EVTX electronic zero-sequence voltage sensor, and the EVTC electronic phase-sequence voltage sensor are integrated with chips having metering, measurement, and zero-sequence functions.

[0010] The beneficial effects of the present invention are:

[0011] The present invention solves the serious defects of the original electromagnetic combined metering transformer and the split electronic combined metering transformer, and integrates the ECTX electronic zero-sequence current sensor, the ECTC electronic phase-sequence current sensor, the primary circuit, the EVTX electronic zero-sequence voltage sensor, and the EVTC electronic phase-sequence voltage sensor into a metal molded shell. The electronic transformer is installed in one piece instead of being split in the past, which saves space and materials, is safe and reliable, and effectively guarantees accuracy and service life, avoiding the need to replace the entire component when a component is broken in the past. The present invention can reduce the probability of damaged components, reduce space, increase reliability and operational safety, and make the main environmental protection metering parameters more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The invention is a schematic structural diagram of a combination sensor for outdoor safety and high-precision electronic metering.

[0013] Wherein, the accompanying drawings are marked as follows:

[0014] 1. Metal molded shell, 2. ECTX electronic zero-sequence current sensor, 3. ECTC electronic phase-sequence current sensor, 4. Primary circuit, 5. EVTX electronic zero-sequence voltage sensor, 6. EVTC electronic phase-sequence voltage sensor, 7. Primary incoming terminal, 8. Primary outgoing terminal. DETAILED DESCRIPTION

[0015] Example 1

[0016] The purpose of the present invention is to overcome the above-mentioned shortcomings and defects and to provide an outdoor safe high-precision electronic metering combined sensor which is smaller in size, simpler in structure, saves materials, has high reliability and precision, is maintenance-free and easy to operate.

[0017] In order to make the technical means and objectives of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments. A combination sensor for outdoor safety high-precision electronic metering, such as Figure 1As shown, it includes a metal molded shell 1, in which the metal molded shell 1 is installed an ECTX electronic zero-sequence current sensor 2, an ECTC electronic phase-sequence current sensor 3, a primary circuit 4, an EVTX electronic zero-sequence voltage sensor 5, and an EVTC electronic phase-sequence voltage sensor 6. The ECTX electronic zero-sequence current sensor 2, the ECTC electronic phase-sequence current sensor 3, the EVTX electronic zero-sequence voltage sensor 5, and the EVTC electronic phase-sequence voltage sensor 6 are connected to the primary circuit 4, and the primary circuit 4 is connected to the external devices of the metal molded shell 1 through the primary incoming terminal 7 and the primary outgoing terminal 8.

[0018] The metal molded shell 1 is molded in one step.

[0019] The interior of the metal molded shell 1 is filled with environmentally friendly gas for insulation.

[0020] Wherein, anti-condensation is provided on the electronic components inside the metal molded shell 1 .

[0021] Wherein, the electronic components inside the metal molded shell 1 are coated with anti-corrosion material.

[0022] The ECTX electronic zero-sequence current sensor 2, the ECTC electronic phase-sequence current sensor 3, the EVTX electronic zero-sequence voltage sensor 5, and the EVTC electronic phase-sequence voltage sensor 6 are integrated with chips having metering, measurement, and zero-sequence functions.

[0023] Example 2

[0024] A combination sensor for outdoor safety and high-precision electronic metering comprises a metal molded shell 1, an ECTX electronic zero-sequence current sensor 2, an ECTC electronic phase-sequence current sensor 3, a primary circuit 4, an EVTX electronic zero-sequence voltage sensor 5, an EVTC electronic phase-sequence voltage sensor 6, a primary incoming terminal 7, and a primary outgoing terminal 8. The metal molded shell 1 contains the ECTX electronic zero-sequence current sensor 2, the ECTC electronic phase-sequence current sensor 3, the primary circuit 4, the EVTX electronic zero-sequence voltage sensor 5, and the EVTC electronic phase-sequence voltage sensor 6, which are mutually connected to the primary circuit 4, and the primary circuit is connected to external devices of the metal molded shell through the primary incoming terminal and the primary outgoing terminal.

[0025] The metal molded shell 1 is molded in one step, and there is no deformation or water leakage;

[0026] The above-mentioned ECTX electronic zero-sequence current sensor 2, ECTC electronic phase-sequence current sensor 3, EVTX electronic zero-sequence voltage sensor 5, and EVTC electronic phase-sequence voltage sensor 6 are not affected by the external environment;

[0027] The above-mentioned outdoor safety high-precision electronic metering combined sensor has metering, measurement and zero sequence functions integrated together;

[0028] The above-mentioned outdoor safety high-precision electronic metering combined sensor has an internal flushing environment-friendly gas as insulation and anti-condensation;

[0029] The above-mentioned outdoor safe high-precision electronic metering combined sensor has explosion-proof function because it uses electronic mutual inductor, is safe and reliable, and ensures that the product will not explode;

[0030] The present invention solves the serious defects of the original electromagnetic combined metering transformer and the split electronic combined metering transformer, and integrates the ECTX electronic zero-sequence current sensor, the ECTC electronic phase-sequence current sensor, the primary circuit, the EVTX electronic zero-sequence voltage sensor, and the EVTC electronic phase-sequence voltage sensor into a metal molded shell. The electronic transformer is installed in one piece instead of being split in the past, which saves space and materials, is safe and reliable, and effectively guarantees accuracy and service life, avoiding the need to replace the entire component when a component is broken in the past. The present invention can reduce the probability of damaged components, reduce space, increase reliability and operational safety, and make the main environmental protection metering parameters more stable.

[0031] The present invention is specifically achieved in that:

[0032] 1. The metal molded housing 1 is equipped with an ECTX electronic zero-sequence current sensor 2, an ECTC electronic phase-sequence current sensor 3, a primary circuit 4, an EVTX electronic zero-sequence voltage sensor 5, and an EVTC electronic phase-sequence voltage sensor 6, which are interconnected on the primary circuit 4 to ensure a good sealing effect and corrosion protection of the components to achieve reliable operation;

[0033] 2. Since all the internal components are electronic, there is no possibility of explosion. The metal molded shell 1 has no pressure relief port, which can better ensure the airtightness of the box;

[0034] The above is an overall description and implementation process of a combination sensor for outdoor safety and high-precision electronic metering.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combination sensor for outdoor safety and high-precision electronic measurement, characterized in that: The invention comprises a metal molded shell (1), wherein an ECTX electronic zero-sequence current sensor (2), an ECTC electronic phase-sequence current sensor (3), a primary circuit (4), an EVTX electronic zero-sequence voltage sensor (5), and an EVTC electronic phase-sequence voltage sensor (6) are installed in the metal molded shell (1); the ECTX electronic zero-sequence current sensor (2), the ECTC electronic phase-sequence current sensor (3), the EVTX electronic zero-sequence voltage sensor (5), and the EVTC electronic phase-sequence voltage sensor (6) are connected to the primary circuit (4); and the primary circuit (4) is connected to external devices of the metal molded shell (1) via a primary incoming terminal (7) and a primary outgoing terminal (8).

2. The outdoor safety high-precision electronic metering combined sensor according to claim 1, characterized in that: The metal molded shell (1) is molded in one step.

3. The outdoor safety high-precision electronic metering combined sensor according to claim 1, characterized in that: The interior of the metal molded shell (1) is filled with environmentally friendly gas for insulation.

4. The outdoor safety high-precision electronic metering combined sensor according to claim 1, characterized in that: Anti-condensation devices are provided on the electronic components inside the metal molded housing (1).

5. The outdoor safety high-precision electronic metering combined sensor according to claim 1, characterized in that: The electronic components inside the metal molded housing (1) are coated with anti-corrosion material.

6. The outdoor safety high-precision electronic metering combined sensor according to claim 1, characterized in that: The ECTX electronic zero-sequence current sensor (2), the ECTC electronic phase-sequence current sensor (3), the EVTX electronic zero-sequence voltage sensor (5), and the EVTC electronic phase-sequence voltage sensor (6) are integrated with chips having metering, measurement, and zero-sequence functions.

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