A metrology switch

Abstract

The application belongs to the technical field of low-voltage electrical apparatus, and particularly relates to a measuring switch; the measuring switch comprises a switch body and a measuring module; the switch body is internally provided with a conductive row, the connecting end of the conductive row penetrates through the switch body and extends to the wiring end of the switch body; the upper end surface of the switch body is provided with a mounting groove, and the mounting groove is located above the conductive row; the measuring module comprises a circuit board, a Hall element and a communication module, the Hall element and the communication module are both arranged on the circuit board, the measuring module is detachably arranged on the upper end surface of the switch body, and the Hall element is located in the mounting groove. The measuring module in the measuring switch can detect the size of the current by sensing the change of the magnetic field on the conductive row through the Hall element, so that the measuring module has high measuring accuracy, the installation of the measuring module does not need to reserve the wiring end or the installation space, the consumption of raw materials and the loss of electric energy can be greatly reduced, and thus the production cost and the operation cost of the measuring switch are effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of low-voltage electrical apparatus, and particularly relates to a metering switch. BACKGROUND

[0002] The metering switch is a low-voltage switch electrical apparatus with a high-precision current sensor and a metering unit, which is used to realize normal on-off breaking or overload short-circuit protection of a power distribution line, and can realize local or remote interaction of data, node voltage, current, and power monitoring, and segmented lean processing function, and is an important bottom node element for realizing smart grid. The metering switch includes a switch body and a metering module instead of an instrument.

[0003] In order to better realize the integrated design of the circuit breaker, the sampling coil, the instrument, and the communication, the market has appeared the circuit breakers of the added type and the embedded type; among them, the circuit breaker of the added type adds a metering module at the rear part of the traditional circuit breaker; and the circuit breaker of the embedded type reserves an installation space on the traditional circuit breaker, installs the measuring coil at the installation space, and embeds the metering module in the installation space.

[0004] However, the volume of the circuit breakers of the added type and the embedded type will be much larger than that of the traditional circuit breaker, for example, the circuit breaker of the added type needs to reserve a set of wiring terminals for conveniently adding the metering module, and the wiring terminals have relevant requirements and standards, which cannot be reduced, resulting in the increase of the volume of the circuit breaker of the added type; and the circuit breaker of the embedded type needs to reserve an installation space, and the setting of the installation space will cause the increase of the volume of the circuit breaker of the embedded type, such as the metering switches disclosed in the Chinese invention patent application No. 202210959266.3, entitled “High-break metering switch”, the Chinese utility model patent No. 202121670293.6, entitled “Metering switch”, and the Chinese utility model patent No. 202220428626.2, entitled “Intelligent metering switch of Internet of Things”;

[0005] In addition, according to the relevant requirements, the measurement accuracy of the measuring coil cannot be lower than 1%, and the requirement of the measuring coil is higher than that of the traditional circuit breaker, and at the same time, the higher the measurement accuracy, the larger the volume, so that the circuit breaker inevitably has a conflict between the space occupied by the measuring coil and the accuracy, and the measuring coil must be installed around the flow guide plate, resulting in that the volume of the circuit breaker with the metering module is much larger than that of the traditional circuit breaker.

[0006] The increase in the volume of the circuit breaker will cause the materials (housing materials and wire materials) for producing the circuit breaker to increase by the same proportion, and under the same current-carrying condition, the power consumption will also increase by the same proportion, and the temperature rise of the terminal will also increase to a certain extent, which will increase the fault risk of the circuit breaker. Therefore, it is a technical problem to be solved by those skilled in the art to invent a measuring switch with small volume and high measurement accuracy. SUMMARY

[0007] In order to solve the above problems existing in the prior art, the application provides a measuring switch to solve the technical problem that the volume of the add-on type circuit breaker and the embedded type circuit breaker is large, which increases the production cost and operation cost of the circuit breaker.

[0008] The application is implemented by the following technical scheme:

[0009] A measuring switch comprises a switch body and a measuring module.

[0010] The switch body is internally provided with a conductive row, and the connecting end of the conductive row extends through the switch body and extends to the terminal of the switch body. The upper end surface of the switch body is provided with a mounting groove, and the mounting groove is located above the conductive row.

[0011] The measuring module comprises a circuit board, a Hall element and a communication module, the Hall element and the communication module are arranged on the circuit board, the measuring module is detachably arranged on the upper end surface of the switch body, and the Hall element is located in the mounting groove.

[0012] In order to better realize the application, the number of Hall elements is equal to the number of conductive rows, all the conductive rows are arranged along the width direction of the switch body at equal intervals, and the arrangement positions of all the Hall elements correspond to the positions of all the conductive rows one by one.

[0013] In order to better realize the application, the bottom of the mounting groove is provided with a limiting groove, the position of the limiting groove corresponds to the position of the conductive row, and the Hall element is located in the limiting groove.

[0014] In order to better realize the application, the mounting groove is provided with a shielding groove between two adjacent limiting grooves, and the shielding groove is provided with a magnetic field shielding material.

[0015] In order to better realize the application, the measuring switch further comprises an upper cover, the upper cover is detachably covered on the upper end surface of the switch body, and the measuring module is located between the upper cover and the switch body.

[0016] In order to better realize the present application, further optimization is made in the above structure, the circuit board is provided with a plug-in end, the communication module is provided with a plug-in head, the communication module is connected with the circuit board through cooperation of the plug-in head and the plug-in end, and the upper cover is provided with a through hole corresponding to the position of the plug-in end.

[0017] In order to better realize the present application, further optimization is made in the above structure, the measuring switch further comprises a protective cover, the lower end surface of the upper cover is provided with a containing groove, the protective cover is located at the slot opening of the containing groove, and the protective cover is provided with a protective groove corresponding to the position of the mounting groove, the measuring module is located in the containing groove, and the Hall element is located in the protective groove.

[0018] In order to better realize the present application, further optimization is made in the above structure, the protective groove is filled with potting glue.

[0019] In order to better realize the present application, further optimization is made in the above structure, the switch body comprises a main body part and a middle cover, the upper end surface of the main body part is provided with a clamping groove at the connection position of the wiring end of the main body part, the middle cover is clamped at the clamping groove, and the mounting groove is arranged on the side of the middle cover away from the clamping groove.

[0020] In order to better realize the present application, further optimization is made in the above structure, the middle cover is detachably arranged on the upper end surface of the main body part through bolts.

[0021] In summary, the present application has the following technical effects:

[0022] There is a magnetic field around the conductive row with current, and the size of the magnetic field is proportional to the size of the current. The measuring module in the measuring switch can detect the size of the current by sensing the change of the magnetic field on the conductive row through the Hall element, so that the measuring module has high measuring accuracy, and the volume of the Hall element is small. It can be normally used by being arranged in the mounting groove arranged on the switch body, without reserving wiring ends or mounting space for the installation of the measuring module, which can greatly reduce the consumption of raw materials and the loss of electric energy, thereby effectively reducing the production cost and operation cost of the measuring switch. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1is a structural schematic diagram of a measurement switch of the present application;

[0025] Figure 2 is a sectional view of a measurement switch of the present application;

[0026] Figure 3 is an exploded view of a measurement switch of the present application;

[0027] Figure 4 is a structural schematic diagram of a measurement module in a measurement switch of the present application;

[0028] Figure 5 is a structural schematic diagram of a middle cover in a measurement switch of the present application;

[0029] Figure 6 is a structural schematic diagram of a protective cover in a measurement switch of the present application.

[0030] Reference signs:

[0031] 1, switch body; 11, main body part; 111, conductive row; 12, middle cover; 121, mounting groove; 122, limiting groove; 123, shielding groove;

[0032] 2, measurement module; 21, circuit board; 211, plug-in end; 22, Hall element;

[0033] 3, upper cover; 31, through hole;

[0034] 4, protective cover; 41, protective groove. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0036] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Embodiment one:

[0039] As shown in the figure: Figures 1 to 5

[0040] A measuring switch, comprising a switch body 1 and a measuring module 2; wherein,

[0041] The inside of the switch body 1 is provided with a conductive row 111, the connecting end of the conductive row 111 passes through the switch body 1 and extends to the wiring end of the switch body 1; the upper end surface of the switch body 1 is provided with a mounting groove 121, the mounting groove 121 is located above the conductive row 111;

[0042] The measuring module 2 comprises a circuit board 21, a Hall element 22 and a communication module, the Hall element 22 and the communication module are both arranged on the circuit board 21, the measuring module 2 is detachably arranged on the upper end surface of the switch body 1, and the Hall element 22 is located in the mounting groove 121.

[0043] There is a magnetic field around the energized conductive row 111, and the size of the magnetic field is proportional to the size of the current, the measuring module 2 in the measuring switch can detect the size of the current by sensing the change of the magnetic field on the conductive row 111 through the Hall element 22, so that the measuring module 2 has higher measuring accuracy;

[0044] And the volume of the Hall element 22 is small, which can be normally used by being arranged in the mounting groove 121 arranged on the switch body 1, without reserving wiring end or mounting space for the installation of the measuring module 2, which can greatly reduce the consumption of raw materials and the loss of electric energy, thereby effectively reducing the production cost and operating cost of the measuring switch.

[0045] It should be noted that the above-mentioned Hall element 22 is a magnetic sensor based on Hall effect. They can be used to detect magnetic field and its change in various occasions related to magnetic field;

[0046] The Hall element 22 has the advantages of firm structure, small volume, light weight, long service life, easy installation, small power consumption, high frequency (up to 1MHz), resistance to vibration, dust, oil stains, water vapor and salt spray pollution or corrosion, etc. As the detection end of the measuring module 2, it can effectively improve the service life of the measuring switch. ​

[0047] In addition, the measurement module 2 is removed from the switch body 1, which does not affect the normal use of the switch body 1; that is, the switch body 1 can be sold and used as a traditional circuit breaker; if the measurement module 2 needs to be installed, the measurement module 2 can be directly installed on the switch body 1 for use, so that the measurement switch realizes the maximum generalization of high and low ends in a set of system architecture, and realizes the possibility of rapid upgrading, thereby effectively improving the practicability of the measurement switch; the embedded circuit breaker in the prior art must be pre-installed with a coil, and the coil is an internal structure and cannot be quickly disassembled, resulting in poor universality of the embedded circuit breaker.

[0048] At the same time, the measurement coil in the traditional measurement switch can only measure alternating current; the measurement module 2 in the measurement switch of the embodiment adopts a Hall element 22, which can measure alternating current and direct current, greatly increasing the application range of the switch without increasing the device.

[0049] Optimally, the number of the Hall elements 22 is equal to the number of the conductive rows 111; wherein,

[0050] All the conductive rows 111 are arranged at equal intervals along the width direction of the switch body 1, and the arrangement positions of all the Hall elements 22 correspond to the positions of all the conductive rows 111 one by one, so as to better measure the current size of each conductive row 111 when energized.

[0051] Optimally, the bottom of the mounting groove 121 is provided with a limiting groove 122; wherein,

[0052] The position of the limiting groove 122 corresponds to the position of the conductive row 111; when the measurement module 2 is installed on the switch body 1, the Hall element 22 is located in the limiting groove 122, so as to better protect the Hall element 22.

[0053] Preferably, a shielding groove 123 is arranged between the two adjacent limiting grooves 122, and a magnetic field shielding material is arranged in the shielding groove 123, so as to shield the interference electromagnetic signals generated by the two adjacent conductive rows 111, thereby improving the measurement accuracy of the measurement module 2.

[0054] Optimally, the inside of the switch body 1 is provided with an electrically operated mechanism, the action end of the electrically operated mechanism is connected with the switch of the switch body 1, and the electrically operated mechanism is in communication connection with the measurement module; the staff can remotely control the action of the electrically operated mechanism, so as to remotely control the opening and closing of the switch, thereby making the use of the measurement switch more convenient.

[0055] Optimally, the measurement switch further comprises an upper cover 3; wherein,

[0056] The upper cover 3 is detachably covered on the upper end surface of the switch body 1, the circuit board 21 in the measurement module 2 is located between the upper cover 3 and the switch body 1, the measurement module 2 is fixed on the switch body 1 through the upper cover 3, so that the connection between the measurement module 2 and the switch body 1 is more stable, so as to avoid the measurement module 2 from falling off the switch body 1 during use.

[0057] In addition, the upper cover 3 can also protect the measurement module 2 from being damaged by external objects.

[0058] It should be noted that the measurement module 2 can also be arranged on the side wall of the switch body 1, and the upper cover 3 is detachably arranged on the side of the switch body 1, and the measurement module 2 is fixed on the switch body 1 through the upper cover 3, so that the connection between the measurement module 2 and the switch body 1 is more stable.

[0059] Preferably, the upper cover 3 is provided with a liquid crystal display screen, the liquid crystal display screen is in communication connection with the measurement module 2, the measurement module 2 can transmit the data information and fault information detected by it to the liquid crystal display screen, and display the information externally through the liquid crystal display screen, so that the maintenance personnel can quickly know the fault information and maintain the measurement switch.

[0060] Preferably, the circuit board 21 is provided with a plug-in end 211, the communication module is provided with a plug-in connector, the communication module is in communication connection with the circuit board 21 through the cooperation of the plug-in connector and the plug-in end 211, and the upper cover 3 is provided with a through hole 31 corresponding to the position of the plug-in end 211, the plug-in end 211 passes through the through hole 31 and is located outside the upper cover 3, so that the disassembly of the communication module and the circuit board 21 is more convenient.

[0061] Preferably, the switch body 1 comprises a main body part 11 and a middle cover 12.

[0062] The upper end surface of the main body part 11 and the connection part of the wiring end of the main body part 11 are provided with a clamping groove, the middle cover 12 is clamped on the clamping groove, and the mounting groove 121 is arranged on the side of the middle cover 12 away from the clamping groove; the middle cover 12 can realize complete physical isolation between the wiring end of the main body part 11 and the measurement module 2, so that the measurement switch has higher insulation characteristics, which increases the possibility of further improving the application range of the measurement switch, such as high voltage and direct current field.

[0063] Preferably, the middle cover 12 is detachably arranged on the upper end surface of the main body part 11 through bolts, so that the disassembly of the middle cover 12 is more convenient.

[0064] It should be noted that the measurement switch can also be used as a circuit breaker with measurement function.

[0065] Embodiment two:

[0066] As Figures 1 to 6 shown:

[0067] As a further optimization of the above embodiment, the measurement switch further comprises a protective cover 4; wherein,

[0068] The lower end surface of the upper cover 3 is provided with a receiving groove, the protective cover 4 is located at the notch of the receiving groove, and the protective cover 4 is provided with a protective groove 41 corresponding to the position of the mounting groove 121; when the measurement module 2 is installed, the measurement module 2 is placed between the upper cover 3 and the protective cover 4, and the Hall element 22 is located in the protective groove 41, so as to better realize the protection of the measurement module 2, improve the safety of the use of the measurement module 2, and effectively improve the service life of the measurement module 2.

[0069] Optimization, the protective groove 41 is filled with potting glue, which can cover the Hall element 22, better realize the protection of the Hall element 22, make the structure of the measurement module 2 more stable, and effectively improve the service life of the measurement switch.

[0070] It should be noted that the potting glue is to fill the liquid polyurethane compound into the protective groove 41 containing the Hall element 22 by mechanical or manual method, and solidify into a thermosetting high polymer insulating material with excellent performance at room temperature or under heating condition, so as to realize the protection of the Hall element 22.

[0071] In addition, the other structures of the measurement switch according to the embodiment are completely the same as those of the measurement switch according to the embodiment one, and the details can be referred to the content in the embodiment one, which will not be repeated here.

[0072] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A metrology switch, characterized by The switch body (1) and the measurement module (2) are included. The switch body (1) is internally provided with a conductive row (111), and the wiring end of the conductive row (111) penetrates through the switch body (1) and extends to the wiring end of the switch body (1); the upper end surface of the switch body (1) is provided with a mounting groove (121), and the mounting groove (121) is located above the conductive row (111). The measurement module (2) includes a circuit board (21), a Hall element (22) and a communication module, the Hall element (22) and the communication module are arranged on the circuit board (21), the measurement module (2) is detachably arranged on the upper end surface of the switch body (1), and the Hall element (22) is located in the mounting groove (121). The bottom of the mounting groove (121) is provided with a limiting groove (122), the position of the limiting groove (122) corresponds to the position of the conductive row (111), the Hall element (22) is located in the limiting groove (122), and a shielding groove (123) is arranged between adjacent two limiting grooves (122), and the shielding groove (123) is provided with a magnetic field shielding material.

2. The metrology switch of claim 1, wherein The number of the Hall elements (22) is equal to the number of the conductive rows (111), all the conductive rows (111) are arranged along the width direction of the switch body (1) at equal intervals, and the arrangement positions of all the Hall elements (22) correspond to the positions of all the conductive rows (111) one by one.

3. The metrology switch of claim 1, wherein The upper cover (3) is further included, the upper cover (3) is detachably covered on the upper end surface of the switch body (1), and the measurement module (2) is located between the upper cover (3) and the switch body (1).

4. The metrology switch of claim 3, wherein The circuit board (21) is provided with a plug-in end (211), the communication module is provided with a plug-in head, the communication module is in communication connection with the circuit board (21) through cooperation of the plug-in head and the plug-in end (211), and the upper cover (3) is provided with a perforation (31) corresponding to the position of the plug-in end (211).

5. The metrology switch of claim 4, wherein The protective cover (4) is further included, the lower end surface of the upper cover (3) is provided with a containing groove, the protective cover (4) is located at the groove opening of the containing groove, the protective cover (4) is provided with a protective groove (41) corresponding to the position of the mounting groove (121), the measurement module (2) is located in the containing groove, and the Hall element (22) is located in the protective groove (41).

6. The metrology switch of claim 5, wherein The protective groove (41) is filled with potting glue.

7. The metrology switch according to any one of claims 1 to 6, wherein The switch body (1) includes a main body part (11) and a middle cover (12), the upper end surface of the main body part (11) and the connection position of the wiring end of the main body part (11) are provided with a clamping groove, the middle cover (12) is clamped at the clamping groove, and the mounting groove (121) is arranged on the side of the middle cover (12) away from the clamping groove.

8. The metrology switch of claim 7, wherein The middle cover (12) is detachably arranged on the upper end surface of the main body (11) by bolts.

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