Low-voltage electric energy metering device
By introducing protective and ventilation components into the low-voltage electricity metering device, the problems of unstable voltage and current and poor heat dissipation are solved, thus achieving the safety and metering accuracy of the equipment.
Patent Information
- Application Number
- CN202420810597.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-18
AI Technical Summary
Existing low-voltage electricity metering devices lack voltage regulation detection, resulting in unstable voltage and current, which can easily cause metering errors and equipment damage, and also have poor heat dissipation.
A low-voltage power metering device is designed, comprising a protective mechanism, a monitoring component, and a ventilation component. The protective mechanism includes a housing, a sealed door, and a baffle. The monitoring component includes a leakage current protector, a PLC controller, a wireless transmission module, and an audible and visual alarm. The ventilation component includes a temperature sensor, an exhaust fan, and a dust filter, which are used to provide protection, metering, and heat dissipation.
It improves the safety and accuracy of low-voltage electricity metering equipment, prevents damage caused by unstable current and voltage and overheating, and achieves stable metering and effective heat dissipation.
Smart Images
Figure CN222337250U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of low-voltage electric energy metering equipment, in particular to a low-voltage electric energy metering device. Background Art
[0002] Low-voltage electric energy metering devices are devices used to measure the electric energy consumption in low-voltage circuits. They are usually used in homes, businesses and light industrial places. They can accurately record the electric energy consumed and provide users with data on electricity consumption, so as to settle fees or manage electricity consumption.
[0003] According to the Chinese patent application number: 202020524781.5, a low-voltage electric energy metering device is disclosed, including a box, an electric energy meter and a warning light, the electric energy meter is arranged in the middle of the upper part of the box, the electric energy meter is arranged above the induction tube, a hanging dry powder fire extinguisher is arranged above the induction tube, a lightning arrester is arranged on one side above the hanging dry powder fire extinguisher, the warning light is arranged on one side of the lightning arrester, and a brake switch is arranged on one side below the warning light, the electric energy meter is connected to the box by screws, and the induction tube is plugged into the hanging dry powder fire extinguisher. By arranging the hanging dry powder fire extinguisher and the induction tube, the fire in the device can be automatically extinguished, and the components in the metering device are prevented from being damaged by overload and heating, thereby improving the safety of the low-voltage electric energy metering device;
[0004] The comparative case effectively solves the problem that the low-voltage electric energy metering equipment in the prior art lacks fireproof components and has poor heat dissipation effect. It has the advantages of automatic fire extinguishing and improved heat dissipation effect. However, this kind of low-voltage electric energy metering equipment lacks voltage stabilization for the detection circuit, which makes the voltage and current easily too high or too low. The unstable current and voltage can easily cause metering errors and damage the metering equipment.
[0005] In summary, the utility model therefore provides a low-voltage electric energy metering device to solve the above-mentioned problems. Utility Model Content
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0007] A low-voltage electric energy metering device comprises a protective mechanism, wherein the protective mechanism comprises a protective component and a monitoring component, wherein the protective component comprises a box body, a sealing door, a first baffle and a second baffle, wherein the monitoring component comprises a leakage protector, a PLC controller, a wireless transmission module and an audible and visual alarm, wherein a metering component is installed in the inner cavity of the protective mechanism, wherein the metering component comprises an electric energy meter, a current transformer and a voltage transformer, wherein a ventilation component is arranged on the surface of the protective mechanism, wherein the ventilation component comprises a temperature sensor, a ventilation fan and a dustproof net, wherein the protective component and the monitoring component are used to provide protection for the metering component, wherein the metering component is used to measure the electric energy in the low-voltage circuit, and wherein the ventilation component is used to dissipate heat.
[0008] Furthermore, in the present invention, the sealing door is hinged to the box body through a hinge, and the first baffle plate and the second baffle plate are respectively fixed on both sides of the inner cavity of the box body.
[0009] Furthermore, in the utility model, the leakage protector, PLC controller and wireless transmission module are all installed in the inner cavity of the box and fixed to one side of the inner cavity of the box, and the sound and light alarm is installed on the top of the box.
[0010] Furthermore, in the present invention, the electric energy meter, current transformer and voltage transformer are all installed on the other side of the inner cavity of the box and fixedly connected to the inner wall of the box.
[0011] Furthermore, in the present invention, the temperature sensor is installed in the inner cavity of the box, and the ventilation fan and the dustproof net are both installed on the back of the box.
[0012] Furthermore, in the utility model, the input ends of the leakage protector, current transformer, voltage transformer and temperature sensor are electrically connected to the input end of the PLC controller, and the output end of the PLC controller is electrically connected to the input end of the wireless transmission module, the sound and light alarm and the ventilation fan respectively.
[0013] Beneficial effects: The utility model has the following beneficial effects:
[0014] The utility model provides protection for the metering component by setting a protection mechanism, thereby preventing the metering component from being damaged by external environmental factors during use; the protection component can provide a protection space for the metering component; the monitoring component can promptly cut off power and send a notification when a failure occurs in the metering component, thereby improving the safety of the use of low-voltage electric energy metering equipment; the metering component is provided to measure the electric energy in the low-voltage circuit; the electric energy meter is used to measure the amount of electric energy used; the current transformer and the voltage transformer can adjust the current and voltage to keep them at safe values, thereby preventing the electric energy meter from being damaged due to the instability of the current and voltage; the ventilation component is provided to ventilate and dissipate heat in the inner cavity of the box, thereby preventing the internal components of the box from malfunctioning due to overheating. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the box body of the utility model;
[0017] Figure 3 It is a rear view structural schematic diagram of the box body of the utility model;
[0018] Figure 4 It is a schematic diagram of the system flow of the utility model.
[0019] In the figure:
[0020] 1. Protection mechanism; 11. Protection component; 111. Box; 112. Sealed door; 113. First baffle; 114. Second baffle; 12. Monitoring component; 121. Leakage protector; 122. PLC controller; 123. Wireless transmission module; 124. Sound and light alarm; 2. Metering component; 201. Electric energy meter; 202. Current transformer; 203. Voltage transformer; 3. Ventilation component; 301. Temperature sensor; 302. Ventilation fan; 303. Dust net. DETAILED DESCRIPTION
[0021] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.
[0022] Example 1
[0023] like Figure 1-4 As shown, it is the first embodiment of the utility model, which provides a low-voltage electric energy metering device, including a protection mechanism 1, the protection mechanism 1 includes a protection component 11 and a monitoring component 12, the protection component 11 includes a box 111, a sealing door 112, a first baffle 113 and a second baffle 114, the monitoring component 12 includes a leakage protector 121, a PLC controller 122, a wireless transmission module 123 and an audible and visual alarm 124, the inner cavity of the protection mechanism 1 is installed with a metering component 2, the metering component 2 includes an electric energy meter 201, a current transformer 202 and a voltage transformer 203, the surface of the protection mechanism 1 is provided with a ventilation component 3, the ventilation component 3 includes a temperature sensor 301, a ventilation fan 302 and a dustproof net 303, the protection component 11 and the monitoring component 12 are used to provide protection for the metering component 2, the metering component 2 is used to measure the electric energy in the low-voltage circuit, and the ventilation component 3 is used to dissipate heat.
[0024] like Figure 1-4 As shown, the energy meter 201 is used to measure the amount of electric energy used in the low-voltage circuit, the current transformer 202 can sense and convert the current signal, and reduce the current signal in the circuit to a safe level, the voltage transformer 203 can sense and convert the voltage signal, and reduce the voltage signal in the circuit to a safe level so as to be connected to the energy meter 201. The conversion between the current transformer 202 and the voltage transformer 203 can prevent the energy meter 201 from being damaged due to unstable current or voltage. The leakage protector 121 can monitor the current in the circuit, thereby preventing electric shock from occurring in the circuit, thereby improving the safety of use. The box body 111 and the sealed door 112 can improve the enclosed operating space, and the first baffle 113 and the second baffle 114 respectively shield the monitoring component 12 and the metering component 2, thereby improving their protection.
[0025] Example 2
[0026] Reference Figure 1-3, which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.
[0027] In this embodiment, the sealing door 112 is hinged to the box body 111 through a hinge, and the first baffle 113 and the second baffle 114 are respectively fixed on both sides of the inner cavity of the box body 111.
[0028] The leakage protector 121 , the PLC controller 122 and the wireless transmission module 123 are all installed in the inner cavity of the box 111 and fixed to one side of the inner cavity of the box 111 , and the sound and light alarm 124 is installed on the top of the box 111 .
[0029] The temperature sensor 301 is installed in the inner cavity of the box body 111 , and the ventilation fan 302 and the dustproof net 303 are both installed on the back side of the box body 111 .
[0030] like Figure 1-3 As shown, the input end of the leakage protector 121 is connected to the power line, and the output end is connected to the load line to realize the monitoring of the circuit. The communication end of the leakage protector 121 is electrically connected to the input end of the PLC controller 122, and can be remotely controlled through the PLC controller 122. The wireless transmission module 123 can send a fault signal to the remote client when a fault occurs, so as to remind the user to handle it in time. The wireless transmission module 123 can use a cellular module or a wireless communication module. The temperature sensor 301 can monitor the temperature of the inner cavity of the box body 111. When the temperature When the temperature exceeds the preset value, a signal can be sent to the PLC controller 122, and the ventilation fan 302 can be started by the PLC controller 122 to ventilate the inner cavity of the box 111, thereby achieving heat dissipation and cooling. When the temperature is lower than the preset value, the ventilation fan 302 can be turned off by the PLC controller 122, thereby achieving energy saving. The dustproof net 303 can be connected to the box 111 by magnetic attraction, and can be easily disassembled and cleaned. The dustproof net 303 can prevent external dust from entering the inner cavity of the box 111 and polluting the components in the inner cavity of the box 111.
[0031] Example 3
[0032] Reference Figure 2 , which is the third embodiment of the utility model, and this embodiment is based on the previous two embodiments.
[0033] In this embodiment, the electric energy meter 201 , the current transformer 202 and the voltage transformer 203 are all installed on the other side of the inner cavity of the box 111 , and are fixedly connected to the inner wall of the box 111 .
[0034] The input ends of the leakage protector 121, the current transformer 202, the voltage transformer 203 and the temperature sensor 301 are all electrically connected to the input end of the PLC controller 122, and the output end of the PLC controller 122 is electrically connected to the input end of the wireless transmission module 123, the sound and light alarm 124 and the ventilation fan 302 respectively.
[0035] like Figure 2 As shown, the current transformer 202 and the voltage transformer 203 each have two output terminals, which are respectively connected to the current input terminal and the voltage input terminal of the electric energy meter 201 and the current input terminal ground terminal and the voltage input terminal ground terminal of the electric energy meter 201. The current transformer 202 and the voltage transformer 203 can convert the current signal and the voltage signal in the circuit into stable signals, so that the electric energy meter 201 can accurately measure the electric energy consumption.
[0036] When in use, the current transformer 202 and the voltage transformer 203 convert the current signal and the voltage signal in the circuit into stable signals. The electric energy meter 201 can accurately measure the electric energy consumption used in the circuit, thereby preventing the electric energy meter 201 from being damaged due to the instability of the current and voltage. The leakage protector 121 monitors the current in the circuit. When the current imbalance is detected, it determines whether leakage occurs by detecting the difference between the inflow and outflow of the current, and sends the data to the PLC controller 122 in time. Then the PLC controller 122 cuts off the circuit through the leakage protector 121, thereby preventing safety accidents caused by leakage. The PLC controller 122 sends data to the remote client in a timely manner through the wireless transmission module 123, so that the user can view it in time. The PLC controller 122 also sends an alarm through the sound and light alarm 124 to remind the user to deal with it. The temperature sensor 301 monitors the temperature of the inner cavity of the box 111. When the temperature exceeds the preset value, it can send a signal to the PLC controller 122. The ventilation fan 302 is started by the PLC controller 122 to ventilate the inner cavity of the box 111, thereby achieving heat dissipation and cooling. When the temperature is lower than the preset value, the ventilation fan 302 can be turned off by the PLC controller 122, thereby achieving energy saving.
[0037] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.
[0038] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.
Claims
1. A low-voltage electric energy metering device, comprising a protection mechanism (1), characterized in that: The protection mechanism (1) comprises a protection component (11) and a monitoring component (12); the protection component (11) comprises a box body (111), a sealing door (112), a first baffle (113) and a second baffle (114); the monitoring component (12) comprises a leakage protector (121), a PLC controller (122), a wireless transmission module (123) and an audible and visual alarm (124); a metering component (2) is installed in the inner cavity of the protection mechanism (1); the metering component (2) The invention comprises an electric energy meter (201), a current transformer (202) and a voltage transformer (203); a ventilation component (3) is arranged on the surface of the protection mechanism (1); the ventilation component (3) comprises a temperature sensor (301), a ventilation fan (302) and a dust screen (303); the protection component (11) and the monitoring component (12) are used to provide protection for the metering component (2); the metering component (2) is used to measure the electric energy in the low-voltage circuit; and the ventilation component (3) is used to dissipate heat.
2. The low voltage electric energy metering device according to claim 1, characterized in that: The sealing door (112) is hinged to the box body (111) via a hinge, and the first baffle (113) and the second baffle (114) are respectively fixed to two sides of the inner cavity of the box body (111).
3. The low voltage electric energy metering device according to claim 1, characterized in that: The leakage protector (121), the PLC controller (122) and the wireless transmission module (123) are all installed in the inner cavity of the box (111) and fixed to one side of the inner cavity of the box (111), and the sound and light alarm (124) is installed on the top of the box (111).
4. The low voltage electric energy metering device according to claim 1, characterized in that: The electric energy meter (201), the current transformer (202) and the voltage transformer (203) are all installed on the other side of the inner cavity of the box (111) and are fixedly connected to the inner wall of the box (111).
5. The low voltage electric energy metering device according to claim 1, characterized in that: The temperature sensor (301) is installed in the inner cavity of the box (111), and the ventilation fan (302) and the dustproof net (303) are both installed on the back of the box (111).
6. The low voltage electric energy metering device according to claim 1, characterized in that: The input ends of the leakage protector (121), the current transformer (202), the voltage transformer (203) and the temperature sensor (301) are all electrically connected to the input end of the PLC controller (122), and the output end of the PLC controller (122) is electrically connected to the input ends of the wireless transmission module (123), the sound and light alarm (124) and the ventilation fan (302), respectively.