Temperature rise cooling device for transmission line tension clamp based on vibration self-energy extraction

Abstract

The temperature rise cooling device for the tension clamp of a power transmission line based on vibration self-energy extraction belongs to the field of power transmission line maintenance technology. The cantilever beam substrate of the energy supply component is connected with a piezoelectric vibrator, one end of the substrate of the piezoelectric vibrator is fixedly connected to the surface of the cantilever beam substrate, the piezoelectric chip is pasted on the substrate, and the mass block is fixedly placed on the free end of the substrate; the mass block amplifies the vibration frequency of the transmission line, and the piezoelectric chip generates electricity using the vibration frequency amplified by the mass block; the charging unit and the discharge unit of the energy storage component are electrically connected; the charging unit stores the electric energy emitted by the energy supply component, and the discharge unit is used for the energy storage component to supply power to the refrigeration cycle component; the N-type semiconductor and the P-type semiconductor of the refrigeration cycle component are connected to form a P-N junction, and several P-N junctions are connected in series to form a semiconductor refrigeration sheet to cool the tension clamp of the transmission line. The present invention can self-power the wire clamp to instantly cool the temperature rise, and improve the phenomenon of line connection being burned due to excessive voltage and excessive resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission line maintenance, and in particular relates to a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction. Background Art

[0002] The energy generated by the vibration of the conductor can be present in the operation of the transmission line. The connection point of the transmission conductor is the weakest link in the operation of the transmission line. The conductor at the connection point is often burned or damaged due to excessive voltage and conductor vibration wear. With the continuous increase in resistance and the continued vibration and friction of the conductor, the heating phenomenon of the conductor connection point is becoming more and more serious. In order to solve the heating problem of the connection point of the high-voltage transmission line conductor, measures need to be taken to control it, improve the faults caused by the heating of the connection point, and ensure the stable and safe operation of the line. However, the load borne by the wire clamp of the high-voltage transmission conductor cannot be too large, which puts certain requirements on the energy supply device of the temperature rise cooling system.

[0003] Piezoelectric materials are crystalline materials that will generate voltage between their two end surfaces when subjected to pressure. They mainly rely on the positive piezoelectric effect to convert the mechanical energy generated by the vibration of the conductor into electrical energy. In addition to being affected by the properties of the material itself, the conversion rate is also very susceptible to the vibration frequency. The vibration frequency of the transmission line conductor is uncertain, and bound charges of opposite signs appear on the surfaces of the two ends of the piezoelectric material. The charge density is proportional to the external mechanical force, that is, high-frequency vibration will generate high-frequency current. How to make good use of the mechanical energy generated by the vibration of the conductor and ensure good and continuous power supply is the key to effectively solve the continuous and stable operation of the temperature rise cooling system of the transmission line tension clamp.

[0004] In the related art, a temperature rise cooling device and a temperature rise cooling method for monitoring ice-melting cables of power transmission lines in a power system are disclosed, which use a water circulation method to perform temperature rise cooling of the lines. The lines are connected to the temperature rise cooling by connecting arc-shaped clamps in the water storage tank preparation period, and solar power generation equipment is used. However, solar energy extraction technology is not perfect, the cost of manual maintenance is high, and the weight of solar panels is large. Increasing the deadweight load of the conductors may cause unsafe operation of the lines. In addition, relying on weather conditions to obtain electricity to power the water circulation temperature rise cooling system has certain limitations and cannot be widely used. Summary of the invention

[0005] To this end, the present invention provides a temperature rise cooling device at the transmission line tension clamp based on vibration self-energy extraction, which can achieve self-energy supply to instantly cool the conductor clamp to improve the phenomenon of line connection being burned due to excessive voltage and excessive resistance.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction, comprising an energy supply component, an energy storage component and a refrigeration cycle component;

[0007] The energy supply component includes a shielding cover and a protective cover, wherein the protective cover is wrapped around the outside of the shielding cover, and a plurality of cantilever beam substrates are arranged on the side of the protective cover; the cantilever beam substrate is connected to a piezoelectric vibrator, and the piezoelectric vibrator includes a substrate, a piezoelectric chip and a mass block; one end of the substrate is fixedly connected to the surface of the cantilever beam substrate, the piezoelectric chip is adhered to the substrate, and the mass block is fixedly placed at the free end of the substrate; the mass block is used to amplify the vibration frequency of the transmission line, and the piezoelectric chip generates electricity using the amplified vibration frequency of the mass block;

[0008] The energy storage component is electrically connected to the energy supply component, and the refrigeration cycle component is electrically connected to the energy storage component; the energy storage component includes a charging unit and a discharging unit, and the charging unit and the discharging unit are electrically connected; the charging unit is used to store the electric energy generated by the energy supply component, and the discharging unit is used for the energy storage component to supply power to the refrigeration cycle component;

[0009] The refrigeration cycle component is wrapped around the outside of the transmission line tension clamp, and the refrigeration cycle component includes an N-type semiconductor and a P-type semiconductor, the N-type semiconductor and the P-type semiconductor are connected to form a PN junction, and a plurality of PN junctions are connected in series to form a semiconductor refrigeration plate to cool the transmission line tension clamp.

[0010] As a preferred solution of the temperature rise cooling device at the tension clamp of the transmission line based on vibration self-energy extraction, the charging unit includes an energy extraction subunit, a monitoring subunit, a rectifier subunit and an electric storage subunit;

[0011] The energy taking subunit is an equivalent element of the energy supply component; the monitoring subunit includes a capacitor C30 and an oscilloscope;

[0012] The rectifier unit includes a diode D31, a diode D32, a diode D33, a diode D34 and a capacitor C35; one end of the capacitor C30 is connected between one end of the diode D31 and one end of the diode D33, and the other end of the capacitor C30 is connected between one end of the diode D32 and one end of the diode D34; one end of the capacitor C35, the other end of the diode D31, and the other end of the diode D32 are connected; the other end of the capacitor C35, the other end of the diode D33, and the other end of the diode D34 are connected;

[0013] The electronic storage unit includes an ammeter, a voltmeter and an inductor L36.

[0014] As a preferred solution of the temperature rise cooling device at the tension clamp of the transmission line based on vibration self-energy extraction, the discharge unit includes a discharge switch S57, a diode D59, a resistor R63, a resistor R64, a capacitor C65, a transistor Q58, a transistor Q62, a resistor R60 and a capacitor C61;

[0015] The discharge switch S57 is connected to the diode D59, the diode D59 is connected to the resistor R63, and the resistor R63 is connected to the resistor R64; one end of the capacitor C65 is connected between the diode D59 and the resistor R63, and the other end of the capacitor C65, one end of the resistor R64, one end of the transistor Q62, and one end of the capacitor C61 are connected;

[0016] One end of the resistor R60 is connected to the transistor Q58, and the other end of the resistor R60 is connected to the transistor Q62; the other end of the capacitor C61 is connected to the transistor Q58.

[0017] As a preferred solution for the temperature rise cooling device at the tension clamp of a transmission line based on vibration self-energy extraction, the energy storage component also includes a battery, which is fixed under the protective cover body, and the input end of the battery is electrically connected to the charging unit, and the output end of the battery is electrically connected to the discharge unit; the battery supplies power to the refrigeration cycle component through the discharge unit.

[0018] As a preferred solution of the temperature rise cooling device at the tension clamp of a power transmission line based on vibration self-energy extraction, the refrigeration cycle component also includes a first copper conductor and a second copper conductor;

[0019] The first copper conductor is connected to the upper end of the PN junction; the second copper conductor is connected to the lower end of the PN junction;

[0020] The upper end of the PN junction forms a cold end; the lower end of the PN junction forms a hot end.

[0021] As a preferred solution for the temperature rise cooling device at the tension clamp of a power transmission line based on vibration self-energy extraction, after direct current is applied to the refrigeration cycle component, electrons flow from the N-type semiconductor to the P-type semiconductor; the upper end of the PN junction absorbs external energy and the temperature decreases; the lower end of the PN junction continuously releases heat to form a hot end.

[0022] As a preferred solution for the temperature rise cooling device at the transmission line tension clamp based on vibration self-energy extraction, the circuit of the piezoelectric vibrator includes diode D88, diode D86, diode D87, diode D89, inductor L66, inductor L80, inductor L81, inductor L82, grounding capacitor C83, grounding capacitor C84 and grounding capacitor C85.

[0023] As a preferred solution of the temperature rise cooling device at the tension clamp of the power transmission line based on vibration self-energy extraction, the refrigeration cycle assembly also includes a temperature sensor, which is fixed below the protective cover; the temperature sensor is used to sense the temperature at the tension clamp of the power transmission line;

[0024] When the temperature at the transmission line tension clamp is higher than the preset normal operating temperature, the refrigeration cycle component is powered by the energy storage component.

[0025] As a preferred solution for a temperature rise cooling device at a transmission line tension clamp based on vibration self-energy extraction, the device is fixed to the transmission line tension clamp by a rigid clamp at the head end, a flexible clamp in the middle, and a rigid clamp at the tail end, and the shielding cover is used to wrap the tension clamp.

[0026] As a preferred solution for the temperature rise cooling device at the tension clamp of the transmission line based on vibration self-energy extraction, the DMN modal decomposition algorithm is used to decompose the vibration frequency signal of the transmission line into several modal components, maintaining the consistency of the linear growth of each modal component and balancing the error between the time domain signal and the corresponding frequency domain signal.

[0027] The present invention has the following advantages: it comprises an energy supply component, an energy storage component and a refrigeration cycle component; the energy supply component comprises a shielding cover and a protective cover, the protective cover is wrapped around the outside of the shielding cover, and a plurality of cantilever beam substrates are arranged on the side of the protective cover; the cantilever beam substrate is connected with a piezoelectric vibrator, and the piezoelectric vibrator comprises a substrate, a piezoelectric chip and a mass block; one end of the substrate is fixedly connected to the surface of the cantilever beam substrate, the piezoelectric chip is adhered to the substrate, and the mass block is fixedly placed on the free end of the substrate; the mass block is used to amplify the vibration frequency of the transmission line, and the piezoelectric chip generates electricity using the amplified vibration frequency of the mass block; the energy storage component The components and the energy supply components are electrically connected, and the refrigeration cycle components and the energy storage components are electrically connected; the energy storage component includes a charging unit and a discharging unit, and the charging unit and the discharging unit are electrically connected; the charging unit is used to store the electric energy emitted by the energy supply component, and the discharging unit is used for the energy storage component to supply power to the refrigeration cycle component; the refrigeration cycle component is wrapped around the outside of the transmission line tension clamp, and the refrigeration cycle component includes an N-type semiconductor and a P-type semiconductor, and the N-type semiconductor and the P-type semiconductor are connected to form a PN junction, and a plurality of PN junctions are connected in series to form a semiconductor refrigeration plate to cool the transmission line tension clamp. The present invention uses piezoelectric energy collection to supply energy to the semiconductor refrigeration plate, which greatly saves labor costs, can achieve self-power supply, and has higher power supply efficiency; it realizes instant temperature rise cooling of the wire clamp, improves the phenomenon of line connection being burned due to excessive voltage and excessive resistance; it prolongs the service life of the tension clamp, and is highly economical; it reduces the number of operation and maintenance times, and ensures the safe and stable operation of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0029] Figure 1 A schematic structural diagram of a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of an application scenario of a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of vibration energy extraction of an energy supply component of a temperature rise cooling device at a tension clamp of a transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of a charging power supply circuit of a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of a discharge power supply circuit of a temperature rise cooling device at a tension clamp of a power transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of a refrigeration cycle assembly of a temperature rise cooling device at a tension clamp of a transmission line based on vibration self-energy extraction provided in an embodiment of the present invention;

[0035] Figure 7 The present invention is a schematic diagram of a protection circuit for a refrigeration cycle component of a temperature rise cooling device at a tension clamp of a transmission line based on vibration self-energy extraction provided in an embodiment of the present invention.

[0036] In the figure, 1, energy supply component; 2, energy storage component; 3, refrigeration cycle component; 4, shielding cover; 5, protective cover; 6, cantilever beam base; 7, piezoelectric vibrator; 8, substrate; 9, piezoelectric chip; 10, mass block; 11, charging unit; 12, discharge unit; 13, temperature sensor; 14, N-type semiconductor; 15, P-type semiconductor; 16, semiconductor refrigeration sheet; 17, battery; 18, first copper conductor; 19, second copper conductor; 20, cold end; 21, hot end;

[0037] I. Tension wire clamp; II. Head end rigid clamp; III. Middle flexible clamp; IV. Tail end rigid clamp. DETAILED DESCRIPTION

[0038] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, 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.

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The embodiment of the present invention provides a temperature rise cooling device for a power transmission line tension clamp I based on vibration self-energy extraction. The device is fixed to the power transmission line tension clamp I through a head end rigid clamp II, a middle flexible clamp III, and a tail end rigid clamp IV, and the tension clamp I is wrapped with a shielding cover 4. The device includes an energy supply component 1, an energy storage component 2, and a refrigeration cycle component 3;

[0040] The energy supply component 1 includes a shielding cover 4 and a protective cover 5, wherein the protective cover 5 is wrapped around the outside of the shielding cover 4, and a plurality of cantilever beam substrates 6 are arranged on the side of the protective cover 5; the cantilever beam substrate 6 is connected to a piezoelectric vibrator 7, and the piezoelectric vibrator 7 includes a substrate 8, a piezoelectric chip 9 and a mass block 10; one end of the substrate 8 is fixedly connected to the surface of the cantilever beam substrate 6, the piezoelectric chip 9 is attached to the substrate 8, and the mass block 10 is fixedly placed at the free end of the substrate 8; the mass block 10 is used to amplify the vibration frequency of the transmission line, and the piezoelectric chip 9 generates electricity using the vibration frequency amplified by the mass block 10;

[0041] Among them, the energy storage component 2 is electrically connected to the energy supply component 1, and the refrigeration cycle component 3 is electrically connected to the energy storage component 2; the energy storage component 2 includes a charging unit 11 and a discharging unit 12, and the charging unit 11 and the discharging unit 12 are electrically connected; the charging unit 11 is used to store the electric energy generated by the energy supply component 1, and the discharging unit 12 is used for the energy storage component 2 to supply power to the refrigeration cycle component 3;

[0042] Among them, the refrigeration cycle component 3 is wrapped around the outside of the transmission line tension clamp I, and the refrigeration cycle component 3 includes an N-type semiconductor 14 and a P-type semiconductor 15. The N-type semiconductor 14 and the P-type semiconductor 15 are connected to form a PN junction, and several PN junctions are connected in series to form a semiconductor refrigeration plate 16 to cool the transmission line tension clamp I.

[0043] See also Figure 7In this embodiment, the circuit of the piezoelectric vibrator includes a diode D88, a diode D86, a diode D87, a diode D89, an inductor L66, an inductor L80, an inductor L81, an inductor L82, a grounding capacitor C83, a grounding capacitor C84 and a grounding capacitor C85.

[0044] Specifically, after the piezoelectric material senses the vibration signal, a potential difference is generated through the positive piezoelectric effect, and the generated current flows through the diode D88 and the diode D86. The diode D88 and the diode D86 play an isolating role, isolating the positive and negative electricity. The diode D87 and the diode D89 play a role in stabilizing the voltage, stabilizing the voltage near a fixed value, and preventing the unstable voltage from damaging the semiconductor refrigeration plate 16. The current flows through the inductor L66, the inductor L80, the inductor L81, and the inductor L82 to filter the transmitted electrical signal, reduce the interference of the original electrical signal, and stabilize the power quality. The grounding capacitor C83, the grounding capacitor C84, and the grounding capacitor C85 effectively reduce the electromagnetic interference caused by the transmission line and the interference of other electronic equipment, prevent the damage of the device caused by excessive voltage, and thus protect the semiconductor refrigeration plate 16.

[0045] In this embodiment, the charging unit 11 includes an energy taking subunit, a monitoring subunit, a rectifier unit and an electronic storage unit; the energy taking subunit is an equivalent element of the energy supply component 1; the monitoring subunit includes a capacitor C30 and an oscilloscope; the rectifier unit includes a diode D31, a diode D32, a diode D33, a diode D34 and a capacitor C35; one end of the capacitor C30 is connected between one end of the diode D31 and one end of the diode D33, and the other end of the capacitor C30 is connected between one end of the diode D32 and one end of the diode D34; one end of the capacitor C35, the other end of the diode D31, and the other end of the diode D32 are connected; the other end of the capacitor C35, the other end of the diode D33, and the other end of the diode D34 are connected; the electronic storage unit includes an ammeter, a voltmeter and an inductor L36.

[0046] Specifically, the oscilloscope in the monitoring subunit can visualize the signal and detect the signal quality. At the same time, the capacitor C30 plays a role in stabilizing the branch voltage. Four diodes are used in the rectifier subunit: diode D31, diode D32, diode D33, and diode D34 are connected in series and parallel, which can better play the role of rectification. At the same time, capacitor C35 plays a role in balancing the voltage. Finally, the voltmeter and ammeter in the storage subunit can visualize the actual stored electrical energy. At the same time, the role of inductor L36 is to stabilize the voltage signal, which is convenient for adjusting the device status at any time.

[0047] In this embodiment, the discharge unit 12 includes a discharge switch S57, a diode D59, a resistor R63, a resistor R64, a capacitor C65, a transistor Q58, a transistor Q62, a resistor R60 and a capacitor C61; the discharge switch S57 is connected to the diode D59, the diode D59 is connected to the resistor R63, and the resistor R63 is connected to the resistor R64; one end of the capacitor C65 is connected between the diode D59 and the resistor R63, and the other end of the capacitor C65, one end of the resistor R64, one end of the transistor Q62, and one end of the capacitor C61 are connected; one end of the resistor R60 is connected to the transistor Q58, and the other end of the resistor R60 is connected to the transistor Q62; the other end of the capacitor C61 is connected to the transistor Q58.

[0048] Specifically, when the switch S57 is closed and the current flows into the discharge unit, the diode D59 acts as an isolation to separate the positive and negative electricity. The resistors R63 and R64 are connected in parallel with the capacitor C65 to act as a filter, and the transistor Q58 amplifies the current to strengthen the current signal. The transistor Q62 acts as a switch circuit, and together with the resistor R60, the circuit is maintained in a relatively stable voltage range, and the capacitor C61 balances the voltage distribution.

[0049] In this embodiment, the energy storage component 2 also includes a battery 17, which is fixed under the protective cover body 5, and the input end of the battery 17 is electrically connected to the charging unit 11, and the output end of the battery 17 is electrically connected to the discharge unit 12; the battery 17 supplies power to the refrigeration cycle component 3 through the discharge unit 12.

[0050] In this embodiment, the refrigeration cycle component 3 also includes a first copper conductor 18 and a second copper conductor 19; the first copper conductor 18 is connected to the upper end of the PN junction; the second copper conductor 19 is connected to the lower end of the PN junction; the upper end of the PN junction forms a cold end 20; the lower end of the PN junction forms a hot end 21; after direct current is applied to the refrigeration cycle component 3, electrons flow from the N-type semiconductor 14 to the P-type semiconductor 15; the upper end of the PN junction absorbs external energy and the temperature decreases; the lower end of the PN junction continuously releases heat to form a hot end 21.

[0051] Specifically, the refrigeration cycle component 3 is based on the Peltier effect. The N-type semiconductor 14 and the P-type semiconductor 15 are connected to form a PN junction. When the direct current passes through the PN junction, the temperature difference electromotive force causes energy displacement, resulting in heat release. Figure 6As shown, after applying direct current, electrons flow from N-type semiconductor 14 to P-type semiconductor 15. Energy is required to flow from low energy level to high energy level. Since the law of conservation of energy is satisfied, the temperature is reduced by absorbing external energy. Since the electric field force does not change, the electrons continue to move, and the upper end continues to absorb heat to form a cold end 20; the lower end continues to release heat to form a hot end 21. Multiple PN junctions are connected in series to form a semiconductor cooling plate 16. Based on the above principle, this design allows the hot end 21 to be directly exposed to the air for easy heat dissipation.

[0052] In this embodiment, the vibration of the transmission line causes the tension clamp 1 to vibrate, which in turn causes the cantilever beam base 6 to vibrate. Since a mass block 10 is added to the free end of the cantilever beam base 6, the vibration frequency of the cantilever beam base 6 is higher than the vibration frequency of the transmission line, thereby better approaching the vibration frequency of the piezoelectric chip 9, converting most of the mechanical energy generated by the vibration into electrical energy, realizing self-energy generation, and improving power generation efficiency. Among them, the circuit of the energy supply component 1 is built into the protective cover body 5 and connected to the energy storage component 2. The energy storage component 2 supplies power to the refrigeration cycle component 3, and the refrigeration cycle component 3 is placed on the inner side of the shielding cover body 4, in contact with the tension clamp 1, and directly cools it by temperature rise. An opening is left below the protective cover body 5 for the hot end 21 of the semiconductor refrigeration plate 16 to dissipate heat, forming a good natural air cooling cycle.

[0053] When the power transmission line vibrates, the cantilever beam base 6 vibrates accordingly, and the external force F acts on the piezoelectric material repeatedly, causing the piezoelectric chip 9 to deform, thereby causing the charge distribution of the piezoelectric chip 9 to be uneven and generate a potential difference. The current vibration frequency of the power transmission line can be determined by the driver chip. When the current vibration frequency is close to the resonant frequency of the piezoelectric chip 9, the power storage of the energy supply component 1 is turned on, and the electric energy generated by the piezoelectric chip 9 is stored in the energy storage component 2.

[0054] Among them, the actual operating temperature of the transmission line tension clamp 1 is compared with the normal operating temperature of the transmission line tension clamp 1. When the temperature sensor 13 senses that the temperature is higher than the normal operating temperature of the tension clamp 1, the power supply channel of the energy storage component 2 is opened to supply power to the semiconductor cooling sheet 16, the driver chip is turned on, and the energy storage component 2 is selected to supply power to the transmission line semiconductor cooling sheet 16; when the temperature of the tension clamp 1 drops to a certain level, the power supply channel of the energy storage component 2 is closed to achieve self-power supply. The current required power supply load is calculated according to the current temperature of the tension clamp 1. If the power supply load is greater than the load of the transmission line semiconductor cooling sheet 16, the charging switch of the energy storage component 2 is turned on to charge the battery 17 of the energy storage component 2 until it is full, and then the charging switch is turned off.

[0055] In a possible embodiment, the transmission line vibration frequency signal is decomposed into several modal components using a DMN modal decomposition algorithm, the linear growth of each modal component is kept consistent, and the error between the time domain signal and the corresponding frequency domain signal is balanced.

[0056] Specifically, in order to ensure the energy efficiency of the energy supply component 1, the vibration data collected by the energy supply component 1 is analyzed and processed using the DMN modal decomposition method. The energy supply component 1 can capture vibration mechanical signals in multiple frequency domains and can apply DMN modal decomposition. By selecting the mode and center frequency, the complex signal is decomposed into multiple modal components, while maintaining the consistency of the linear growth of each modal component, making the signal after modal decomposition easier to analyze. In addition, the DMN modal decomposition algorithm has a strong anti-interference ability and can well balance the error between the time domain signal and the corresponding frequency domain signal, which is of great significance to the analysis of vibration mechanical signals.

[0057] In summary, the present invention includes an energy supply component 1, an energy storage component 2 and a refrigeration cycle component 3; the energy supply component 1 includes a shielding cover 4 and a protective cover 5, the protective cover 5 is wrapped around the outside of the shielding cover 4, and a plurality of cantilever beam substrates 6 are arranged on the side of the protective cover 5; the cantilever beam substrate 6 is connected to a piezoelectric vibrator 7, and the piezoelectric vibrator 7 includes a substrate 8, a piezoelectric chip 9 and a mass block 10; one end of the substrate 8 is fixedly connected to the surface of the cantilever beam substrate 6, the piezoelectric chip 9 is pasted on the substrate 8, and the mass block 10 is fixedly placed on the free end of the substrate 8; the mass block 10 is used to amplify the vibration frequency of the transmission line, and the piezoelectric chip 9 generates electricity using the vibration frequency amplified by the mass block 10; the energy storage component 2 and The energy supply components 1 are electrically connected, and the refrigeration cycle component 3 and the energy storage component 2 are electrically connected; the energy storage component 2 includes a charging unit 11 and a discharging unit 12, and the charging unit 11 and the discharging unit 12 are electrically connected; the charging unit 11 is used to store the electric energy emitted by the energy supply component 1, and the discharging unit 12 is used for the energy storage component 2 to supply power to the refrigeration cycle component 3; the refrigeration cycle component 3 is wrapped around the outside of the transmission line tension clamp 1, and the refrigeration cycle component 3 includes an N-type semiconductor 14 and a P-type semiconductor 15, and the N-type semiconductor 14 and the P-type semiconductor 15 are connected to form a PN junction, and a plurality of PN junctions are connected in series to form a semiconductor refrigeration plate 16 to cool the transmission line tension clamp 1. The vibration of the transmission line causes the tension clamp 1 to vibrate, and then causes the cantilever beam base 6 to vibrate. Since a mass block 10 is added to the free end of the cantilever beam base 6, the vibration frequency of the cantilever beam base 6 is higher than the vibration frequency of the transmission line, so as to better approach the vibration frequency of the piezoelectric chip 9, and convert most of the mechanical energy generated by the vibration into electrical energy, realize self-energy generation, and improve the power generation efficiency. Among them, the circuit of the energy supply component 1 is built into the protective cover body 5 and connected to the energy storage component 2. The energy storage component 2 supplies power to the refrigeration cycle component 3, and the refrigeration cycle component 3 is placed on the inner side of the shielding cover body 4, in contact with the tension clamp I, and directly cools it by temperature rise. An opening is left under the protective cover body 5 for the hot end 21 of the semiconductor refrigeration plate 16 to dissipate heat, forming a good natural air cooling cycle. The refrigeration cycle component 3 is based on the Peltier effect. The N-type semiconductor 14 and the P-type semiconductor 15 are connected to form a PN junction. When direct current passes through the PN junction, the energy is offset due to the effect of the temperature difference electromotive force, resulting in heat release. Its schematic diagram is as follows Figure 6As shown, after applying direct current, electrons flow from N-type semiconductor 14 to P-type semiconductor 15. Energy is required to flow from low energy level to high energy level. Because the law of conservation of energy is satisfied, external energy is absorbed and the temperature is reduced. Because the electric field force does not change, the electrons continue to move, and the upper end continues to absorb heat to form a cold end 20; the lower end continues to release heat to form a hot end 21. Multiple PN junctions are connected in series to form a semiconductor cooling plate 16. Based on the above principle, the design makes the hot end 21 directly exposed to the air for easy heat dissipation. The present invention collects piezoelectric energy to supply energy to the semiconductor cooling plate 16, greatly saving labor costs, achieving self-power supply, and higher power supply efficiency; achieving instant temperature rise cooling of the wire clamp, improving the phenomenon of line connection being burned due to excessive voltage and excessive resistance; extending the service life of the tension clamp 1, and being highly economical; reducing the number of operation and maintenance times, and ensuring safe and stable operation of the transmission line.

[0058] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A temperature rise cooling device at a transmission line tension clamp (I) based on vibration self-energy extraction, characterized in that: It comprises an energy supply component (1), an energy storage component (2) and a refrigeration cycle component (3); The energy supply component (1) comprises a shielding cover (4) and a protective cover (5), wherein the protective cover (5) is wrapped around the outside of the shielding cover (4), and a plurality of cantilever beam bases (6) are provided on the side of the protective cover (5); the cantilever beam base (6) is connected to a piezoelectric vibrator (7), and the piezoelectric vibrator (7) comprises a substrate (8), a piezoelectric chip (9) and a mass block (10); one end of the substrate (8) is fixedly connected to the surface of the cantilever beam base (6), the piezoelectric chip (9) is adhered to the substrate (8), and the mass block (10) is fixedly placed on the free end of the substrate (8); the mass block (10) is used to amplify the vibration frequency of the transmission line, and the piezoelectric chip (9) generates electricity using the amplified vibration frequency of the mass block (10); The energy storage component (2) is electrically connected to the energy supply component (1), and the refrigeration cycle component (3) is electrically connected to the energy storage component (2); the energy storage component (2) comprises a charging unit (11) and a discharging unit (12), and the charging unit (11) and the discharging unit (12) are electrically connected; the charging unit (11) is used to store the electric energy generated by the energy supply component (1), and the discharging unit (12) is used for the energy storage component (2) to supply power to the refrigeration cycle component (3); The refrigeration cycle component (3) is wrapped around the outside of the transmission line tension clamp (I), and the refrigeration cycle component (3) includes an N-type semiconductor (14) and a P-type semiconductor (15), wherein the N-type semiconductor (14) and the P-type semiconductor (15) are connected to form a PN junction, and a plurality of PN junctions are connected in series to form a semiconductor refrigeration plate (16) to cool the transmission line tension clamp (I).

2. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 1 is characterized in that: The charging unit (11) comprises an energy extraction subunit, a monitoring subunit, a rectifier subunit and an electric storage subunit; The energy extraction subunit is an equivalent element of the energy supply component (1); the monitoring subunit includes a capacitor C30 and an oscilloscope; The rectifier unit includes a diode D31, a diode D32, a diode D33, a diode D34 and a capacitor C35; one end of the capacitor C30 is connected between one end of the diode D31 and one end of the diode D33, and the other end of the capacitor C30 is connected between one end of the diode D32 and one end of the diode D34; one end of the capacitor C35, the other end of the diode D31, and the other end of the diode D32 are connected; the other end of the capacitor C35, the other end of the diode D33, and the other end of the diode D34 are connected; The electronic storage unit includes an ammeter, a voltmeter and an inductor L36.

3. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 2 is characterized in that: The discharge unit (12) comprises a discharge switch S57, a diode D59, a resistor R63, a resistor R64, a capacitor C65, a transistor Q58, a transistor Q62, a resistor R60 and a capacitor C61; The discharge switch S57 is connected to the diode D59, the diode D59 is connected to the resistor R63, and the resistor R63 is connected to the resistor R64; one end of the capacitor C65 is connected between the diode D59 and the resistor R63, and the other end of the capacitor C65, one end of the resistor R64, one end of the transistor Q62, and one end of the capacitor C61 are connected; One end of the resistor R60 is connected to the transistor Q58, and the other end of the resistor R60 is connected to the transistor Q62; the other end of the capacitor C61 is connected to the transistor Q58.

4. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 3 is characterized in that: The energy storage component (2) further comprises a battery (17), the battery (17) being fixed below the protective cover (5), the input end of the battery (17) being electrically connected to the charging unit (11), and the output end of the battery (17) being electrically connected to the discharge unit (12); the battery (17) supplies power to the refrigeration cycle component (3) through the discharge unit (12).

5. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 1 is characterized in that: The refrigeration cycle component (3) further comprises a first copper conductor (18) and a second copper conductor (19); The first copper conductor (18) is connected to the upper end of the PN junction; the second copper conductor (19) is connected to the lower end of the PN junction; The upper end of the PN junction forms a cold end (20); and the lower end of the PN junction forms a hot end (21).

6. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 5 is characterized in that: When direct current is applied to the refrigeration cycle component (3), electrons flow from the N-type semiconductor (14) to the P-type semiconductor (15); the upper end of the PN junction absorbs external energy and the temperature decreases; the lower end of the PN junction continuously releases heat to form a hot end (21).

7. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 1 is characterized in that: The circuit of the piezoelectric vibrator (7) includes a diode D88, a diode D86, a diode D87, a diode D89, an inductor L66, an inductor L80, an inductor L81, an inductor L82, a grounding capacitor C83, a grounding capacitor C84 and a grounding capacitor C85.

8. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 1 is characterized in that: The refrigeration cycle assembly (3) further comprises a temperature sensor (13), wherein the temperature sensor (13) is fixed below the protective cover (5); the temperature sensor (13) is used to sense the temperature at the transmission line tension clamp (I); When the temperature at the transmission line tension clamp (I) is higher than a preset normal operating temperature, the refrigeration cycle component (3) is powered by the energy storage component (2).

9. The temperature rise cooling device at the transmission line tension clamp (I) based on vibration self-energy extraction according to claim 1 is characterized in that: The device is fixed to a transmission line tension clamp (I) via a head end rigid clamp (II), a middle flexible clamp (III) and a tail end rigid clamp (IV), and the tension clamp (I) is wrapped with the shielding cover (4).

Images