Electric energy meter stand and measuring detection device

Abstract

The present invention belongs to the field of power system metering and detection devices, and particularly relates to an electric energy meter stand and a metering and detection device. The electric energy meter stand includes an arc detection component and an electric energy metering control component. The metering control component includes a relay component. The relay component is provided with a sampling resistor, and the sampling resistor is provided with a sampling reference point. The arc detection component includes high-frequency and low-frequency sampling transformers. The high-frequency and low-frequency sampling transformers are sleeved on the terminal and individually connected to the terminal. The terminal input end is connected to the live wire of the electric energy meter, and the output end is respectively connected to the relay component. The output end of the relay component is connected to the output live wire of the electric energy meter. The arc detection component enables the electric energy meter to have an arc detection function, improves system safety, and provides multiple electric energy metering control components, effectively reducing the number of wire terminals, avoiding fault points, and reducing the number of electric energy meters in the distribution cabinet without changing the number of metering routes (multiple routes), effectively reducing the size of the distribution cabinet and reducing costs.

Description

Technical Field

[0001] The invention belongs to the field of power system metering and detection devices, and in particular relates to an electric energy meter stand and a metering and detection device. Background Art

[0002] An electric energy meter, also known as a watt-hour meter, fire meter, or kilowatt-hour meter, is an instrument used to measure electrical energy. Traditional electric energy meters lack arc detection capabilities and cannot effectively detect arcing within the metering channel. Arcing can cause faults in the daily operation of power systems or power equipment, and in severe cases, can even cause fires. To improve circuit safety, electric energy meters and arc detection devices are used separately to perform arc detection and energy measurement. However, separate arc detection devices and electric energy meters create multiple access points in the circuit, increasing the probability of introducing access fault points.

[0003] In a Chinese utility model patent with authorization announcement number CN 217212883 U and authorization announcement date of August 16, 2022, an electric energy meter and an electric energy meter system are disclosed. The electric energy meter includes a fault arc detection circuit, a control circuit and an alarm circuit. The input end of the fault arc detection circuit is connected to the live wire of the circuit measured by the electric energy meter. The fault arc detection circuit is used to sample the current of the live wire and detect whether a fault arc occurs in the circuit. The electric energy meter has an arc detection function. Like the traditional ones, this electric energy meter can only measure the electric energy of one metering channel. If you want to complete the electric energy detection of multiple metering channels, you can only increase the number of metering channels by increasing the number of electric energy meters. Increasing the number of electric energy meters also requires expanding the volume of the supporting distribution cabinet, which will put higher requirements on the power line distribution technology in the distribution cabinet, resulting in an increase in the cost of the entire distribution cabinet. Summary of the Invention

[0004] The present invention aims to provide an electric energy meter stand to solve the technical problem of large size and high cost of distribution cabinets used for arc detection and electric energy metering in the prior art. The present invention also aims to provide a metering and detection device to solve the above technical problem.

[0005] To achieve the above-mentioned purpose, the present invention provides a technical solution for an electric energy meter stand as follows: the electric energy metering control component includes more than two relay components, and each relay component is provided with a sampling resistor; the arc detection component includes a high-frequency sampling transformer and a low-frequency sampling transformer, and the high-frequency sampling transformer and the low-frequency sampling transformer are sleeved on the terminal post and connected to the terminal post separately, the incoming end of the terminal post is used to connect the live wire of the electric energy meter, and the outgoing end of the terminal post is respectively connected to each relay component, and the outgoing end of the relay is connected to the output live wire of the electric energy meter.

[0006] The beneficial effects are: arranging an arc detection component in the electricity meter base can enable the electricity meter to have an arc detection function, which can effectively detect arc problems in the line in the metering channel, thereby improving the operation safety of the line, and by arranging multiple electricity metering control components in an electricity meter base and connecting them to the terminal posts connected to the arc detection components, it is not necessary to set two connection points in the power system, effectively reducing the number of wire terminals and avoiding fault points. While not changing the number of metering routes (multiple routes), the number of electricity meters set in the distribution cabinet is reduced, effectively reducing the volume of the distribution cabinet and reducing the cost of the distribution cabinet.

[0007] Furthermore, there are two relay assemblies, namely a first relay assembly and a second relay assembly.

[0008] The beneficial effect is that by providing two relay components, it is convenient to set the circuit structure inside the meter base.

[0009] Further, the first relay assembly and the second relay assembly are on the same plane.

[0010] The beneficial effects are: making the structure of the entire electric energy meter base flat, the relay can be directly welded to the electric meter main board, saving the internal space of the electric energy meter base, facilitating the reduction of the size of the electric energy meter base and further reducing the volume of the distribution cabinet.

[0011] Furthermore, the long side direction of the first relay assembly is perpendicular to the arrangement direction of the high-frequency sampling transformer and the low-frequency sampling transformer, and the long side direction of the second relay assembly is arranged along the arrangement direction of the high-frequency sampling transformer and the low-frequency sampling transformer. The arc detection assembly is located in the space enclosed by the first relay assembly and the second relay assembly.

[0012] The beneficial effects are: the long sides of the first relay assembly and the second relay assembly are arranged vertically, and the arc detection assembly is set in the space surrounded by the two relay assemblies, the spatial position in the electricity meter stand is reasonably arranged, the internal space of the electricity meter stand is reasonably utilized, the components are arranged more closely, the size of the electricity meter stand is reduced, and the volume of the distribution cabinet is further reduced.

[0013] Furthermore, the sampling resistors all use manganese copper resistors.

[0014] The beneficial effect is that the sampling resistors all adopt manganese copper resistors, which can reduce the material cost of the whole machine.

[0015] To achieve the above-mentioned purpose, the technical solution of the metering and detection device provided by the present invention is: the metering and detection device includes an electric energy meter stand, the electric energy metering control component of the electric energy meter stand includes more than two relay components, and the relay components are each provided with a sampling resistor; the arc detection component includes a high-frequency sampling transformer and a low-frequency sampling transformer, the high-frequency sampling transformer and the low-frequency sampling transformer are mounted on the terminal post and are separately connected to the terminal post, the incoming end of the terminal post is used to connect the live wire of the electric energy meter, the outgoing end of the terminal post is respectively connected to each relay component, and the outgoing end of the relay is connected to the output live wire of the electric energy meter.

[0016] The beneficial effects are: an arc detection component is set in the electricity meter base, so that the electricity meter has an arc detection function, which can effectively detect arc problems in the line of the metering channel, thereby improving the operation safety of the line, and by setting multiple electricity metering control components in an electricity meter base and connecting them to the terminal connected to the arc detection component, it is not necessary to set two connection points in the power system, thereby effectively avoiding the fault point, and it is not necessary to set multiple electricity meters in a distribution cabinet to detect multiple metering channels, thereby effectively reducing the volume of the distribution cabinet and reducing the cost of the distribution cabinet.

[0017] Furthermore, there are two relay assemblies, namely a first relay assembly and a second relay assembly.

[0018] The beneficial effect is that by providing two relay components, it is convenient to set the circuit structure inside the meter base.

[0019] Further, the first relay assembly and the second relay assembly are on the same plane.

[0020] The beneficial effects are: making the structure of the entire electric energy meter base flat, the relay can be directly welded to the electric meter main board, saving the internal space of the electric energy meter base, facilitating the reduction of the size of the electric energy meter base and further reducing the volume of the distribution cabinet.

[0021] Furthermore, the long side direction of the first relay assembly is perpendicular to the arrangement direction of the high-frequency sampling transformer and the low-frequency sampling transformer, and the long side direction of the second relay assembly is arranged along the arrangement direction of the high-frequency sampling transformer and the low-frequency sampling transformer. The arc detection assembly is located in the space enclosed by the first relay assembly and the second relay assembly.

[0022] The beneficial effects are: the long sides of the first relay assembly and the second relay assembly are arranged vertically, and the arc detection assembly is set in the space surrounded by the two relay assemblies, the spatial position in the electricity meter stand is reasonably arranged, the internal space of the electricity meter stand is reasonably utilized, the components are arranged more closely, the size of the electricity meter stand is reduced, and the volume of the distribution cabinet is further reduced.

[0023] Furthermore, the sampling resistors and are both manganese-copper resistors.

[0024] The beneficial effect is that the sampling resistors all adopt manganese copper resistors, which can reduce the material cost of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded view of the electric energy meter stand in Example 1 of the present invention (excluding the terminal cover);

[0026] Figure 2 This is a first structural diagram of the internal data collection component of the electric energy meter base in Example 1 of the present invention;

[0027] Figure 3 This is a second structural diagram of the internal data collection component of the electric energy meter base in Example 1 of the present invention;

[0028] Figure 4 This is a three-dimensional diagram of the appearance of the electric energy meter stand in Example 1 of the present invention.

[0029] Description of reference numerals:

[0030] 1. Bottom shell; 11. Bottom shell bottom plate; 111. Extension; 12. Neutral line groove; 131. First clip; 132. Second clip; 15. Strong current port cover; 151. Wire hole; 2. Mainboard; 3. Acquisition module; 31. Input live wire copper plate; 321. Low-frequency sampling transformer; 322. High-frequency sampling transformer; 323. Low-frequency sampling transformer signal acquisition port; 33. Wiring copper plate; 34. First relay assembly; 341. First relay assembly signal acquisition port; 34 2. First output copper plate; 343. Reference sampling point; 344. First relay assembly sampling resistor; 35. Second relay assembly; 351. Second relay assembly signal acquisition port; 352. Second output copper plate; 354. Second relay assembly sampling resistor; 361. First output live copper plate; 362. Second output live copper plate; 4. High-voltage port; 5. Top shell; 51. Top shell side panel; 52. Top shell top panel; 521. Neutral wire connection hole; 53. Connection plate; 6. Terminal cover. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0032] 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 invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0033] It should be noted that relational terms such as "first" and "second" that may appear are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, elements defined by the phrase "including a..." do not exclude processes or methods that include the elements.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "provided with" and "provided with" should be understood in a broad sense. For example, the object "provided with" may be a part of the main body, or may be arranged separately from the main body and connected to the main body. The connection may be detachable or non-detachable. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] The present invention is described in further detail below with reference to the examples.

[0037] Specific embodiment 1 of an electric energy meter stand provided by the present invention:

[0038] like Figure 1 、 Figure 2 、 Figure 3As shown, the structure of the electric energy meter base provided in this embodiment includes a base 1, in which a collection module 3 is provided. The collection module 3 includes an arc detection component and an electric energy metering control component. The electric energy metering control component includes a first relay component 34 and a second relay component 35. The first relay component 34 and the second relay component 35 are respectively provided with a first input terminal and a second input terminal. The first input terminal and the second input terminal are both provided with sampling resistors, namely a first relay component sampling resistor 344 and a second relay component sampling resistor 354. A reference sampling point 343 is provided on the first relay component sampling resistor 344.

[0039] like Figure 1 、 Figure 2 As shown, the arc detection assembly is provided with a terminal. In this embodiment, the terminal is a copper plate 33. The incoming end of the copper plate 33 is connected to the live input copper plate 31, which is then connected to the live input of the energy meter. The arc detection assembly includes a high-frequency sampling transformer 322 and a low-frequency sampling transformer 321. The high-frequency sampling transformer 322 and the low-frequency sampling transformer 321 are mounted on the copper plate 33 and are individually connected to the copper plate 33. The copper plate 33 first connects to the high-frequency sampling transformer 322, then to the low-frequency sampling transformer 321, and then splits into two paths, connecting the first input terminal and the second input terminal respectively. In this embodiment, two sampling resistors are provided at the first and second input terminals. All sampling resistors are manganese copper resistors and are correspondingly welded to the first and second input terminals. The copper plate 33 connects the first and second input terminals via soft copper wire.

[0040] like Figure 1 、 Figure 2 、 Figure 3As shown, the first relay assembly 34 and the second relay assembly 35 are respectively provided with a first output terminal and a second output terminal. In this embodiment, the first output terminal and the second output terminal are respectively a first output copper plate 342 and a second output copper plate 352. The first output copper plate 342 and the second output copper plate 352 are respectively connected to the first output live copper plate 361 and the second output live copper plate 362 via corresponding soft copper wires. The first output live copper plate 361 and the second output live copper plate 362 are respectively output to the first metering channel and the second metering channel of the bottom case. The first relay assembly 34 and the second relay assembly 35 are also respectively provided with a control port connected to the mainboard 2. The first relay assembly 34 and the second relay assembly 35 are welded to the mainboard 2. High-voltage ports are provided on the input live copper plate 31, the first output live copper plate 361, and the second output live copper plate 362. The first relay assembly 34 and the second relay assembly 35 are on the same plane. The long side direction of the first relay assembly 34 is perpendicular to the arrangement direction of the high-frequency sampling transformer 322 and the low-frequency sampling transformer 321. The long side direction of the second relay assembly 35 is arranged along the arrangement direction of the high-frequency sampling transformer 322 and the low-frequency sampling transformer 321. The arc detection assembly is located in the space enclosed by the first relay assembly 34 and the second relay assembly 35.

[0041] like Figure 1 、 Figure 4As shown, the acquisition module 3, the mainboard 2, and the high-voltage port 4 are installed in the installation cavity formed by the bottom shell 1 and the top shell 5. The length of the top shell side plate 51 on one side of the top shell 5 is greater than the length on the other side. The bottom shell bottom plate 11 has an upwardly extending extension 111 at the corresponding position of the longer side of the top shell side plate 51. The extension 111 and the longer top shell side plate 51 are both provided with a high-voltage port cover 15. The two high-voltage port covers 15 are provided with three wire holes 151. The wire hole 151 in the middle position is formed by splicing the arc grooves at the matching positions of the two high-voltage port covers 15. A connecting plate 53 is connected between the top shell top plate 52 and the high-voltage port cover 15 on the top shell 5. The top shell top plate 52 is provided with a neutral wire connection hole 521 for entering and exiting the neutral wire inside the meter holder. A first clip 13 is provided on the bottom plate 11 of the bottom shell, and a neutral line groove 12 is formed between the first clip 13 and the extension portion 111. Correspondingly, a second clip is also provided on the top shell 4, which is directly opposite the position of the first clip 13, and another neutral line groove 12 is formed between the second clip and the connecting plate. When multiple electricity meters need to be installed in a distribution cabinet, the neutral wire used to connect the electricity meters first passes through the neutral line groove 12 to reach the neutral line connection hole 521, and then enters the installation cavity from the neutral line connection hole 521. When the wire is discharged, it leaves the installation cavity from the neutral line connection hole, and then exits from the neutral line groove 12 on the other side to connect to the next electricity meter, thereby ensuring that multiple electricity meters can be installed in one electrical cabinet. The arc detection component in the meter holder gives the electricity meter an arc detection function, improving system safety and detecting whether the circuit wiring is in good condition and whether an arc is generated. The equipment has two-way electricity metering control components, reducing the circuit system circuit crimping points, effectively avoiding fault points, and using one metering device to measure two circuit metering channels, effectively reducing the size of the distribution cabinet and reducing costs.

[0042] Specific embodiment 2 of the electric energy meter stand provided by the present invention:

[0043] The main difference from Example 1 is that, in this embodiment, the first relay assembly, the low-frequency sampling transformer, and the high-frequency sampling transformer are arranged on the same plane.

[0044] Specific embodiment 3 of the electric energy meter stand provided by the present invention:

[0045] The main difference from Example 1 is that, in this embodiment, the long side directions of the first relay assembly and the second relay assembly are perpendicular to the arrangement direction of the high-frequency sampling transformer and the low-frequency sampling transformer, and the arc detection assembly is located in front of the first relay assembly and the second relay assembly.

[0046] Specific embodiment 4 of the electric energy meter stand provided by the present invention:

[0047] The main difference from Example 1 is that, in this embodiment, the sampling resistors are all copper resistors.

[0048] Specific embodiment 5 of the electric energy meter stand provided by the present invention:

[0049] The main difference from embodiment 1 is that, in this embodiment, a sampling reference point can be selected on any relay group of two relays.

[0050] In a specific embodiment of a metering and detecting device provided by the present invention, the innovation lies in adopting the structure described in any one of the specific embodiments 1-4 of the above-mentioned electric energy meter stand, which will not be described in detail here.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electric energy meter stand, comprising a bottom shell and a top shell, wherein the bottom shell and the top shell form an installation cavity, wherein an arc detection component and an electric energy metering control component are arranged in the installation cavity, wherein the arc detection component and the ... The length of the top shell side plate on one side of the top shell is greater than that on the other side, and the bottom plate of the bottom shell has an upwardly extending extension at a position corresponding to the longer side of the top shell side plate, and the extension and the longer top shell side plate are both provided with a strong current port cover, and a connecting plate is connected between the top plate of the top shell and the strong current port cover on the top shell, and a zero wire connection hole is provided on the top plate of the top shell for entering and exiting the zero wire inside the meter seat, and a first buckle is provided on the bottom plate of the bottom shell, and a zero wire groove is formed between the first buckle and the extension, and a second buckle is also provided on the top shell opposite to the position of the first buckle, and another zero wire groove is formed between the second buckle and the connecting plate. The electric energy metering control component includes two or more relay components, each of which is provided with a sampling resistor; the arc detection component includes a high-frequency sampling mutual inductor (322) and a low-frequency sampling mutual inductor (323), the high-frequency sampling mutual inductor (322) and the low-frequency sampling mutual inductor (323) are sleeved on the terminal and individually connected to the terminal, the incoming end of the terminal is used to connect the live wire of the electric energy meter, the outgoing end of the terminal is respectively connected to each relay component, and the outgoing end of the relay component is connected to the output live wire of the electric energy meter.

2. The electric energy meter stand according to claim 1, characterized in that: The relay components are provided with two, namely a first relay component (34) and a second relay component (35).

3. The electric energy meter stand according to claim 2, characterized in that: The first relay assembly (34) and the second relay assembly (35) are on the same plane.

4. The electric energy meter stand according to claim 3, characterized in that: The long side direction of the first relay component (34) is perpendicular to the arrangement direction of the high-frequency sampling mutual inductor (322) and the low-frequency sampling mutual inductor (323); the long side direction of the second relay component (35) is arranged along the arrangement direction of the high-frequency sampling mutual inductor (322) and the low-frequency sampling mutual inductor (323); and the arc detection component is located in a space enclosed by the first relay component (34) and the second relay component (35).

5. The electric energy meter stand according to any one of claims 1 to 4, characterized in that: The sampling resistor is a manganese copper resistor.

6. A measuring and detecting device, characterized in that: The utility model comprises an electric energy meter stand, wherein the electric energy meter stand comprises a bottom shell and a top shell, wherein the bottom shell and the top shell constitute an installation cavity, wherein an arc detection component and an electric energy metering control component are arranged in the installation cavity, wherein the length of the top shell side plate on one side of the top shell is greater than the length on the other side, and the bottom plate of the bottom shell has an upwardly extending extension at a position corresponding to the longer side of the top shell side plate, and the extension and the longer top shell side plate are both provided with a strong electric port cover, and a connecting plate is connected between the top plate of the top shell and the strong electric port cover on the top shell, and a zero wire connecting hole is provided on the top plate of the top shell for entering and exiting the zero wire inside the meter stand, a first buckle is provided on the bottom plate of the bottom shell, and a zero wire groove is formed between the first buckle and the extension, and a connection hole corresponding to the first buckle is also provided on the top shell. A second snap fastener is positioned opposite to the first snap fastener, and another zero line groove is formed between the second snap fastener and the connecting plate; the electric energy metering control component includes more than two relay components, and the relay components are each provided with a sampling resistor; the arc detection component includes a high-frequency sampling transformer (322) and a low-frequency sampling transformer (323), the high-frequency sampling transformer (322) and the low-frequency sampling transformer (323) are sleeved on the terminal and separately connected to the terminal, the incoming end of the terminal is used to connect the live wire of the electric energy meter, the outgoing end of the terminal is respectively connected to each relay component, and the outgoing end of the relay component is connected to the output live wire of the electric energy meter.

7. The measuring and detecting device according to claim 6, wherein: The relay components are provided with two, namely a first relay component (34) and a second relay component (35).

8. The measuring and detecting device according to claim 7, wherein: The first relay assembly (34) and the second relay assembly (35) are on the same plane.

9. The measuring and detecting device according to claim 8, characterized in that: The long side direction of the first relay component (34) is perpendicular to the arrangement direction of the high-frequency sampling mutual inductor (322) and the low-frequency sampling mutual inductor (323); the long side direction of the second relay component (35) is arranged along the arrangement direction of the high-frequency sampling mutual inductor (322) and the low-frequency sampling mutual inductor (323); and the arc detection component is located in a space enclosed by the first relay component (34) and the second relay component (35).

10. The measuring and detecting device according to any one of claims 6 to 9, characterized in that: The sampling resistor is a manganese copper resistor.

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