Photovoltaic power supply high temperature alarm device

Abstract

The invention relates to the technical field of power distribution equipment, in particular to a photovoltaic power supply high-temperature alarm device which comprises a shell, a temperature measuring module, a control module, an energy supply module and a signal module. A temperature measuring module, a control module, a signal module and an energy supply module are installed in the shell, a plurality of lifting lugs used for being matched and fixed with a wire clamp are arranged on the outer surface of the shell, the temperature measuring module is used for detecting the temperature of the wire clamp, and the control module is used for receiving signals of the temperature measuring module and sending the signals to the signal module. The signal module is used for transmitting the current temperature detected by the temperature measuring module outwards, the energy supply module is used for providing electric quantity needed by operation for the temperature measuring module, the control module and the signal module, real-time temperature monitoring can be achieved, and once the temperature of the wire clamp exceeds a preset threshold value, the warning lamp is automatically started, and instant visual warning is provided. The safety monitoring capability of the power distribution network is enhanced, and potential fault points can be found in time.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution equipment, and in particular to a photovoltaic-powered high-temperature alarm device. Background Art

[0002] During the operation of the distribution network, conductor heating failure is a common and serious safety hazard. This type of failure usually stems from multiple factors, the most common of which is improper installation of the wire clamp. Taking the JB-type groove wire clamp as an example, its inappropriate torque may cause excessive squeezing or poor contact of the wire, thereby causing wire damage or poor electrical contact, further causing abnormal heating when current passes through. As the heating problem worsens, it may cause a series of more serious faults, such as wire melting, short circuit, fire, etc., posing a threat to the safe operation of the distribution network.

[0003] In addition, the distribution network often needs to deal with the connection problem between the main line and the drainage line of different diameters. In order to adapt to these wire diameter differences, aluminum wire or other materials are usually wound on the drainage line to increase the contact radius. However, although this approach can solve the problem of wire diameter differences, it also brings the potential risk of environmental corrosion. The wound part of the aluminum wire is extremely susceptible to erosion by air, moisture and pollutants, causing oxidation or corrosion on the metal surface, thereby increasing the contact resistance. The increase in resistance will directly lead to greater heat generation when the current passes through, further exacerbating the heating problem of the wire, forming a vicious circle.

[0004] At present, traditional wire clamps used in distribution networks lack an effective high-temperature warning mechanism. Since wire heating failures usually appear gradually over a period of time and are difficult to monitor in real time, traditional wire clamp designs cannot issue timely alarms at the early stages of heating. This makes it difficult for distribution networks to quickly take corresponding preventive measures when facing the risk of wire heating, increasing the possibility of failures. Existing technologies have failed to provide a solution that can both ensure stable connection of wires and effectively monitor and warn of wire heating. Therefore, how to detect and deal with wire heating problems in a timely manner while ensuring connection quality has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] Since traditional wire clamps lack a high-temperature warning mechanism, the distribution network has long faced safety hazards. In order to enhance the safety monitoring capabilities of the distribution network and discover potential fault points in a timely manner:

[0006] The present application proposes a photovoltaic-powered high-temperature alarm device, comprising a shell, a temperature measurement module, a control module, an energy supply module, and a signal module; the temperature measurement module, the control module, the signal module, and the energy supply module are installed in the shell, and the outer surface of the shell is provided with a plurality of hanging ears for cooperating and fixing with a wire clamp, the temperature measurement module is used to detect the temperature of the wire clamp, the control module is used to receive the signal of the temperature measurement module and send it to the signal module, the signal module is used to transmit the temperature currently detected by the temperature measurement module to the outside, and the energy supply module is used to provide the temperature measurement module, the control module, and the signal module with the power required for operation.

[0007] Preferably, a heat-conducting block penetrating the shell is provided on the top of the shell, the top surface of the heat-conducting block is used to contact the wire clamp to detect the temperature of the contact surface, and the temperature measuring module is located at the bottom of the heat-conducting block.

[0008] Preferably, the control module includes a single-chip microcomputer, an alarm circuit, and a signal conditioning circuit. The single-chip microcomputer is used to provide instruction reception and calculation from the temperature measurement module and send the calculation results to the signal module; the alarm circuit is used to connect the single-chip microcomputer and the signal module; the signal conditioning circuit is used to connect the temperature measurement module and the single-chip microcomputer.

[0009] Preferably, the signal module includes an alarm light and an antenna, and an alarm light and an antenna are provided at the bottom of the shell. The alarm light is used to provide a visible light signal corresponding to the temperature detected by the current temperature measurement module, and the antenna is used to emit an electromagnetic wave signal corresponding to the temperature detected by the current temperature measurement module.

[0010] Preferably, a relief opening for avoiding the wire clamp fastener is provided on the top of the heat conductive block, and the relief opening is a hemispherical depression.

[0011] Preferably, the edge of the hemispherical recess is chamfered.

[0012] Preferably, the energy supply module includes a photovoltaic panel, a lithium battery and a charging circuit, and the outer shell is equipped with a photovoltaic panel for converting light energy into electrical energy; a lithium battery is installed in the outer shell for directly providing the temperature measurement module, the single-chip microcomputer and the signal module with the power required for operation, and the photovoltaic panel is connected to the lithium battery through a photovoltaic circuit; the charging circuit is used to connect the energy supply module and the temperature measurement module, the control module and the signal module, so that the energy supply module is used to provide the temperature measurement module, the single-chip microcomputer and the signal module with the power required for operation.

[0013] Preferably, a heat insulation board is provided in the shell, and the heat insulation board and the inner wall of the shell form a space that isolates the temperature measurement module from the control module, the signal module, and the energy supply module.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Real-time temperature monitoring and early warning: The integrated temperature measurement module can monitor the temperature of the conductor in real time. Once the temperature exceeds the preset threshold, the alarm light will automatically start to provide an immediate visual alarm. This high temperature early warning mechanism greatly enhances the safety monitoring capability of the distribution network and helps to promptly discover and deal with potential fault points.

[0016] 2. Optimize the layout of the structure of the temperature measurement module to reduce the difficulty of fixing the temperature measurement module and the wire clamp, improve the installation convenience, reduce the failure rate of the temperature measurement module and extend the service life of the temperature measurement module, and avoid the heat generated by the control module, signal module and energy supply module affecting the detection accuracy of the temperature measurement module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below; in all drawings, similar elements or parts are generally identified by similar figure marks; in the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a stereogram of the present invention;

[0019] Figure 2 It is a cross-sectional view of the present invention;

[0020] Figure 3 This is the working principle diagram of the control module;

[0021] Figure 4 This is the working principle diagram of the signal conditioning circuit of the control module.

[0022] In the figure: 1. Heat conducting block; 2. Shell; 3. Photovoltaic panel; 4. Lifting ear; 5. Avoidance; 6. Chamfer; 7. Temperature measurement module; 8. Lithium battery; 9. Control module; 10. Warning light; 11. Antenna; 12. Heat insulation board. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The following is combined with Figure 1 To Attachment Figure 4, introduces a photovoltaic-powered high-temperature alarm device proposed in the present invention, including a shell 2, a temperature measuring module 7, a control module 9, an energy supply module, and a signal module; the temperature measuring module 7, the control module 9, the signal module and the energy supply module are installed in the shell 2, and the outer surface of the shell 2 is provided with a plurality of lifting ears 4 for cooperating with the wire clamp for fixing, the lifting ears 4 are used to fix the temperature measuring module 7 and the wire clamp to be detected with materials such as a clamp or a stainless steel rope, the temperature measuring module 7 is used to detect the temperature of the wire clamp, the control module 9 is used to receive the signal of the temperature measuring module 7 and send it to the signal module, the signal module is used to transmit the temperature detected by the current temperature measuring module 7 to the outside, and the energy supply module is used to provide the temperature measuring module 7, the control module 9 and the signal module with the power required for operation.

[0025] A heat conducting block 1 penetrating the shell 2 is disposed on the top of the shell 2 . The top surface of the heat conducting block 1 is used to contact the wire clamp to detect the temperature of the contact surface. The temperature measuring module 7 is located at the bottom of the heat conducting block 1 .

[0026] See also Figure 3 and Figure 4 The control module 9 includes a single-chip microcomputer, an alarm circuit, and a signal conditioning circuit. The single-chip microcomputer is used to receive and calculate instructions from the temperature measurement module 7 and send the calculated results to the signal module; the alarm circuit is used to connect the single-chip microcomputer and the signal module; the signal conditioning circuit is used to connect the temperature measurement module 7 and the single-chip microcomputer. The main function of the signal conditioning circuit is to condition the temperature signal transmitted from the temperature measurement module 7 to a stable voltage level (0-3.3V) that the single-chip microcomputer can receive. The signal conditioning circuit includes a proportional circuit and a voltage follower circuit. The signal transmitted by the temperature measurement module 7 is relatively weak and cannot be directly collected by the single-chip microcomputer (MCU). It is necessary to use a proportional circuit to amplify the signal first so that the collected signal can be adjusted to a voltage level that the single-chip microcomputer can receive. In order to protect the single-chip microcomputer (MCU) and prevent the single-chip microcomputer from being impacted by the peak voltage / current of the external signal, a voltage follower circuit is added between the proportional circuit and the single-chip microcomputer (MCU). It has the characteristics of high input impedance and low output impedance, which makes the signal transmission more stable, avoids the situation where the signal fluctuates severely during the signal collection process of the single-chip microcomputer, and ensures that the single-chip microcomputer can operate more safely and stably.

[0027] See Figure 2The signal module includes an alarm light 10 and an antenna 11. The bottom of the housing 2 is provided with an alarm light 10 and an antenna 11. The alarm light 10 is used to provide a visible light signal corresponding to the temperature detected by the current temperature measurement module 7. Since the entire device is installed on a cable conductor in the sky, considering the sunlight during the day and long-distance viewing, the size of the alarm light 10 cannot be too small. Considering the power and the brightness of the light, the alarm light 10 design can choose a three-color light (yellow, green, and red) of more than 20mm. Choosing three colors of alarm lights 10 can ensure the diversity of alarm functions, such as: temperature level, low battery, etc. The antenna 11 is used to emit an electromagnetic wave signal corresponding to the temperature detected by the current temperature measurement module 7. When the light condition is strong or the line of sight is poor, it can be considered to increase the signal reception method. The antenna 11 can be a signal antenna 11 such as Bluetooth or WIFI to improve applicability in various environments.

[0028] The top of the heat conducting block 1 is provided with an escape opening 5 for avoiding the wire clamp fastener. The escape opening 5 is a hemispherical depression. The hemispherical structure can form an arched force, reduce the stress concentration of the entire escape opening 5, improve the overall strength and durability, and prevent the heat conducting block 1 from being damaged by wire clamp fasteners such as nuts and nuts. After the wire clamp fasteners such as nuts and nuts fall into the hemispherical depression, the contact surface between the heat conducting block 1 and the wire clamp can be increased as much as possible. The edge of the hemispherical depression is provided with a chamfer 6 to further reduce the stress concentration and improve the service life.

[0029] The energy supply module includes a photovoltaic panel 3, a lithium battery 8 and a charging circuit. The housing 2 is equipped with a photovoltaic panel 3 for converting light energy into electrical energy. The photovoltaic panel 3 converts solar energy into electrical energy and stores it in the lithium battery 8. Since the entire system uses photovoltaic charging to provide power, the long-term and stable operation of the entire system can be guaranteed. The housing 2 is equipped with a lithium battery 8 that directly provides the temperature measurement module 7, the single-chip microcomputer and the signal module with the required power for operation. Figure 3 The photovoltaic panel 3 is connected to the lithium battery 8 through a photovoltaic circuit; the charging circuit is used to connect the energy supply module and the temperature measurement module 7, the control module 9, and the signal module, so that the energy supply module is used to provide the temperature measurement module 7, the single-chip microcomputer and the signal module with the power required for operation.

[0030] A heat insulation board 12 is provided in the shell 2, and the heat insulation board 12 and the inner wall of the shell 2 form a space that isolates the temperature measurement module 7 from the control module 9, the signal module, and the energy supply module, thereby reducing the failure rate of the temperature measurement module 7 and extending the service life of the temperature measurement module 7, and preventing the heat generated by the control module 9, the signal module, and the energy supply module from affecting the detection accuracy of the temperature measurement module 7.

[0031] Here is a method of use:

[0032] The heat conducting block 1 is fitted to the bottom of the wire clamp to be tested, and the entire device and the wire clamp to be tested are fixed by fasteners (hoops or pipe clamps, etc.) through the ear 4 on the housing 2. The shape is as follows: Figure 1 As shown (the clamp or pipe clamp is not shown), align the avoidance opening 5 with the fasteners of the wire clamp to be tested, such as nuts and caps, to increase the contact area between the heat conducting block 1 and the bottom of the wire clamp to be tested as much as possible.

[0033] Since the wire clamps to be tested in the prior art are all made of heat-conducting metal materials such as aluminum or copper, the wire clamps to be tested can transfer the temperature on the wire to the heat-conducting block 1, so the heat-conducting block 1 can transfer the received heat to the temperature measurement module 7 located at the bottom of the heat-conducting block 1. The temperature measurement module 7 sends the electrical signal to the single-chip microcomputer for processing in real time, and the single-chip microcomputer analyzes and determines according to the preset judgment conditions. When the preset warning value is exceeded, the alarm circuit transmits the temperature difference signal to the alarm light 10 and the antenna 11; when it is lower than the preset warning value, the alarm circuit transmits the normal operation signal to the alarm light 10 and the antenna 11.

[0034] The remote monitoring operator can judge the current temperature condition by the preset color of the alarm light 10 to determine the next action. In some embodiments, the signal sent by the antenna 11 can be received by using a drone or by pre-burying a signal transmitter around the wire clamp to be tested, so as to realize the operation of monitoring the conductor temperature beyond the line of sight.

[0035] It should be understood that when used in this specification and the appended claims, the terms “include” and “comprises” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof;

[0036] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention; as used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise;

[0037] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

Claims

1. A photovoltaic powered high temperature alarm device, characterized in that: The invention comprises a housing (2), a temperature measuring module (7), a control module (9), an energy supply module and a signal module; the housing (2) is provided with the temperature measuring module (7), the control module (9), the signal module and the energy supply module; the outer surface of the housing (2) is provided with a plurality of hanging ears (4) for cooperating and fixing with a wire clamp; the temperature measuring module (7) is used to detect the temperature of the wire clamp; the control module (9) is used to receive the signal of the temperature measuring module (7) and send it to the signal module; the signal module is used to transmit the temperature currently detected by the temperature measuring module (7) to the outside; and the energy supply module is used to provide the temperature measuring module (7), the control module (9) and the signal module with the power required for operation.

2. A photovoltaic powered high temperature alarm device according to claim 1, characterized in that: A heat conducting block (1) penetrating the shell (2) is provided at the top of the shell (2); the top surface of the heat conducting block (1) is used to contact the wire clamp to detect the temperature of the contact surface; and the temperature measuring module (7) is located at the bottom of the heat conducting block (1).

3. A photovoltaic powered high temperature alarm device according to claim 1, characterized in that: The control module (9) comprises a single-chip microcomputer, an alarm circuit, and a signal conditioning circuit; the single-chip microcomputer is used to receive instructions from the temperature measurement module (7), perform operations, and send the results of the operations to the signal module; the alarm circuit is used to connect the single-chip microcomputer and the signal module; and the signal conditioning circuit is used to connect the temperature measurement module (7) and the single-chip microcomputer.

4. A photovoltaic powered high temperature alarm device according to claim 1, characterized in that: The signal module comprises an alarm light (10) and an antenna (11). The bottom of the housing (2) is provided with an alarm light (10) and an antenna (11). The alarm light (10) is used to provide a visible light signal corresponding to the temperature detected by the current temperature measurement module (7), and the antenna (11) is used to emit an electromagnetic wave signal corresponding to the temperature detected by the current temperature measurement module (7).

5. A photovoltaic powered high temperature alarm device according to claim 2, characterized in that: The top of the heat conducting block (1) is provided with an escape opening (5) for escaping the wire clamp fastener, and the escape opening (5) is a hemispherical depression.

6. A photovoltaic-powered high temperature alarm device according to claim 5, characterized in that: The hemispherical concave edge is provided with a chamfer (6).

7. A photovoltaic powered high temperature alarm device according to claim 1, characterized in that: The energy supply module comprises a photovoltaic panel (3), a lithium battery (8) and a charging circuit; the housing (2) is provided with a photovoltaic panel (3) for converting light energy into electrical energy; the housing (2) is provided with a lithium battery (8) for directly providing the temperature measurement module (7), the single-chip microcomputer and the signal module with the power required for operation; the photovoltaic panel (3) is connected to the lithium battery (8) via the photovoltaic circuit; the charging circuit is used to connect the energy supply module with the temperature measurement module (7), the control module (9) and the signal module, so that the energy supply module is used to provide the temperature measurement module (7), the single-chip microcomputer and the signal module with the power required for operation.

8. A photovoltaic powered high temperature alarm device according to claim 2, characterized in that: A heat insulation board (12) is provided inside the housing (2), and the heat insulation board (12) and the inner wall of the housing (2) form a space that isolates the temperature measurement module (7) from the control module (9), the signal module, and the energy supply module.

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