Energy-taking power supply

Abstract

The utility model discloses an energy-taking power supply. The energy-taking power supply comprises a first shell, wherein the first shell is provided with a first opening; the energy-taking transformer is provided with a high-voltage energy-taking capacitor, and the energy-taking transformer is placed in the first shell through the first opening; the piezoresistor is arranged in the first shell, and the piezoresistor is connected to a primary winding of the energy taking transformer in parallel; and the high-voltage connecting line is respectively connected with the energy-taking transformer and the high-voltage energy-taking capacitor. The energy-taking transformer directly obtains high voltage through the high-voltage energy-taking capacitor, a secondary power electronic device does not need to be deployed to rectify and filter the high voltage, and the output voltage and the output power of the energy-taking transformer are stabilized without depending on a secondary power electronic device protection loop. And the overvoltage and overcurrent of the energy-taking transformer are released, so that the energy-taking transformer can obtain the voltage from the high-voltage energy-taking capacitor in real time under the overvoltage and overcurrent conditions, and the service life of the whole power distribution network switch is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution network switches, in particular to an energy-taking power supply. Background Art

[0002] In the prior art, the rectifier circuit, protection circuit and voltage stabilizing circuit configured in the distribution network switch all use a large number of secondary power electronic components configured with a capacitor voltage division energy supply. However, the secondary power electronic components are placed in the switch box. When the voltage of the transformer increases from the phase voltage to the line voltage, the temperature of the transformer increases, resulting in a reduction in the service life of the secondary power electronic components placed inside the switch box, thereby affecting the service life of the entire distribution network switch. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an energy-taking power supply, which does not require the use of secondary power electronic components for rectification and filtering, and ensures that the service life of the energy-taking power supply is consistent with that of the distribution network switch.

[0004] On the one hand, the energy-taking power supply according to the embodiment of the utility model includes:

[0005] A first shell, wherein the first shell is provided with a first opening;

[0006] An energy transformer, wherein the energy transformer is provided with a high-voltage energy-taking capacitor, and the energy transformer is placed inside the first shell through the first opening;

[0007] A varistor, the varistor is arranged inside the first housing, and the varistor is connected in parallel to the primary winding of the energy extraction transformer;

[0008] A high-voltage connecting line is connected to the energy taking transformer and the high-voltage energy taking capacitor respectively.

[0009] According to some embodiments of the present utility model, the first housing is also provided with a secondary output terminal.

[0010] According to some embodiments of the present utility model, a high-voltage energy extraction capacitor is also connected to the side opposite to the side where the high-voltage connecting line is connected to the energy extraction transformer.

[0011] According to some embodiments of the utility model, the first shell is provided with a first bottom plate, a first side plate, a first end side plate, a first top cover plate and a second side plate, the first end of the first side plate is connected to the first bottom plate, the second end of the first side plate is connected to the first end side plate, the third end of the first side plate is connected to the first top cover plate, and the fourth end of the first side plate is connected to the second side plate.

[0012] According to some embodiments of the utility model, the energy supply is also provided with a second shell, the second shell is provided with a second opening, the second shell is connected to the first shell, the second shell is provided with a third side panel, a second bottom plate, a second end side panel, a second top cover panel and a fourth side panel, the second bottom plate is connected to the first bottom plate, the second side panel is connected to the fourth side panel, the first end side panel is connected to the second end side panel, and the first top cover panel is connected to the second top cover panel.

[0013] According to some embodiments of the present invention, heat dissipation holes are disposed on surfaces of the first shell and the second shell.

[0014] According to some embodiments of the present invention, the high-voltage connecting wire is made of silicone.

[0015] According to some embodiments of the utility model, one end of the high-voltage energy extraction capacitor is connected to an AC power supply, the other end of the high-voltage energy extraction capacitor is respectively connected to a first end of the energy extraction transformer and one end of the varistor, the second end of the energy extraction transformer and the other end of the varistor are both grounded, the third end of the energy extraction transformer is grounded, and the fourth end of the energy extraction transformer is connected to a load of the energy extraction power supply.

[0016] The energy-taking power supply according to the embodiment of the utility model has at least the following beneficial effects:

[0017] A first shell, the first shell is provided with a first opening; an energy transformer, the energy transformer is provided with a high-voltage energy capacitor, and the energy transformer is placed inside the first shell through the first opening; a varistor, the varistor is arranged inside the first shell, and the varistor is connected in parallel to the primary winding of the energy transformer; a high-voltage connecting line, the high-voltage connecting line is respectively connected to the energy transformer and the high-voltage energy capacitor. According to the technical solution of the present application, the energy transformer directly obtains high voltage electricity through the high-voltage energy capacitor, and there is no need to deploy secondary power electronic devices to rectify and filter the high voltage electricity, and does not rely on the secondary power electronic device protection circuit to stabilize the output voltage and output power of the energy transformer. By connecting a varistor in parallel to the primary winding of the energy transformer, the overvoltage and overcurrent of the energy transformer are released, and the energy transformer and the high-voltage energy capacitor are connected through the high-voltage connecting line, so as to ensure that the energy transformer can also obtain voltage from the high-voltage energy capacitor in real time in the case of overvoltage and overcurrent, thereby improving the service life of the entire distribution network switch.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the overall structure of the switching power supply of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure after the first shell and the second shell of the embodiment of the utility model are installed;

[0022] Figure 3 This is a schematic diagram of the overall structure of the first shell and the second shell of an embodiment of the utility model;

[0023] Figure 4 This is a circuit diagram of the energy-taking power supply according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] First housing 100; first bottom plate 110; first side plate 120; first end side plate 130; first top cover plate 140; second side plate 150; first opening 160; energy transformer 200; varistor 300; high-voltage connecting wire 400; secondary terminal 500; second housing 600; third side plate 610; second bottom plate 620; second end side plate 630; second top cover plate 640; fourth side plate 650; heat dissipation hole 700; high-voltage energy capacitor

[0026] C1. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figures 1 to 4 An embodiment of the utility model provides an energy-taking power supply, including a first shell 100, the first shell 100 is provided with a first opening 160; an energy-taking transformer 200, the energy-taking transformer 200 is provided with a high-voltage energy-taking capacitor C1, and the energy-taking transformer 200 is placed inside the first shell 100 through the first opening 160; a varistor 300, the varistor 300 is arranged inside the first shell 100, and the varistor 300 is connected in parallel to the primary winding of the energy-taking transformer 200. In this embodiment, the long-term operating voltage of the varistor 300 is not less than 1500V; a high-voltage connecting line 400, and the high-voltage connecting line 400 is respectively connected to the energy-taking transformer 200 and the high-voltage energy-taking capacitor C1. According to the technical solution of the present application, the energy taking transformer 200 directly obtains high voltage electricity through the high-voltage energy taking capacitor C1, and there is no need to deploy secondary power electronic devices to rectify and filter the high voltage electricity. The output voltage and output power of the energy taking transformer 200 are stabilized without relying on the secondary power electronic device protection circuit. The overvoltage and overcurrent of the energy taking transformer 200 are released by connecting the varistor 300 in parallel to the primary winding of the energy taking transformer 200. The energy taking transformer 200 and the high-voltage energy taking capacitor C1 are connected by the high-voltage connecting line 400 to ensure that the energy taking transformer 200 and the high-voltage energy taking capacitor C1 are connected, so as to ensure that the energy taking transformer 200 can also obtain voltage from the high-voltage energy taking capacitor C1 in time in the case of overvoltage and overcurrent, thereby improving the service life of the entire distribution network switch.

[0031] It should be noted that, since the capacitor voltage-dividing energy-taking power supply works between the relative ground, the rated parameters of the capacitor voltage-dividing energy-taking power supply are designed according to the relative ground voltage, but there is a single-phase grounding fault in the 10KV power grid line, and some lines allow the equipment to run with a fault for two hours. At this time, the phase voltage of the secondary power electronic components rises to the line voltage, so that the energy-taking device has to withstand more than twice the overvoltage and output twice the energy-taking power. The capacitor voltage-dividing energy-taking power supply in the prior art is mostly CL / CCL principle and CVT principle, but the above-mentioned energy-taking power supplies are all provided with a rectifier circuit or a protection circuit and a voltage stabilizing circuit to ensure that the output voltage and output power are stable and the transformer is overloaded and damaged. The energy-taking power supply in this embodiment does not need to rectify and filter the alternating current through secondary power electronic devices, but uses the core saturation characteristics of the energy-taking transformer 200 to limit overvoltage and overcurrent. When the energy-taking power supply is operating normally, the core of the energy-taking transformer 200 works at the edge of the saturation point. When the line is overvoltage, the energy-taking transformer 200 enters a saturated operating state, and the output voltage and power remain basically unchanged. For lightning overvoltage, a varistor 300 is connected in parallel to the primary winding of the energy-taking transformer 200 to release the overvoltage and overcurrent in the line, thereby ensuring the normal operation of the energy-taking power supply. In addition, as a type of lightning arrester, the varistor 300 has a very long service life, thereby ensuring that the service life of the varistor 300 is consistent with the service life of the switch.

[0032] The first housing 100 is also provided with a secondary output terminal 500. It should be noted that it is used to connect the energy transformer 200 with the load so that the load can directly obtain the output voltage of the energy transformer 200 through the secondary output terminal 500, so that the voltage of the energy transformer 200 can be guided to other circuits or devices without disassembling the first housing 100 of the energy source, and the electrical isolation between the energy transformer 200 and the load is realized, so as to prevent mutual interference or current backflow between the load and the internal circuit of the energy switch.

[0033] A high-voltage plug is also provided on the opposite side of the side where the high-voltage connecting line 400 is connected to the energy-taking transformer 200. It should be noted that the high-voltage connecting line 400 is used to connect the energy-taking transformer 200 with the high-voltage energy-taking capacitor C1. The high-voltage connecting line 400 is made of silicone material with an insulation level of up to 8KV. A high-voltage plug is also provided on the opposite side of the side where the high-voltage connecting line 400 is connected to the energy-taking transformer 200 and the high-voltage energy-taking capacitor C1, which is used to connect the energy-taking capacitor to the BNC socket. The high-voltage plug can withstand strong voltage and high current, and ensure safe and reliable connection between the high-voltage connecting line 400, the energy-taking capacitor and the energy-taking transformer 200, and can easily connect and disconnect the electrical connection between the high-voltage power supply and the energy-taking transformer 200, avoiding arcing and leakage between the energy-taking switch and the external connection circuit, and further improving the service life of the energy-taking switch.

[0034] The first shell 100 is provided with a first bottom plate 110, a first side plate 120, a first end side plate 130, a first top cover plate 140 and a second side plate 150, the first end of the first side plate 120 is connected to the first bottom plate 110, the second end of the first side plate 120 is connected to the first end side plate 130, the third end of the first side plate 120 is connected to the first top cover plate 140, and the fourth end of the first side plate 120 is connected to the second side plate 150.

[0035] It should be noted that the first housing 100 adopts a symmetrical bending process. The first housing 100 is based on the first side plate 120, and the first bottom plate 110, the first end side plate 130, the first top cover plate 140 and the second side plate 150 are gathered along the same axis to form a first opening 160 in the first housing 100, so that the opening is not closed when there is only one energy-taking switch. The first side plate 120 is used to install the transformer and the varistor 300, and the soldering circuit board, etc. The second side plate 150 is used to install the high-voltage connection system, the grounding terminal and the secondary output terminal, etc.

[0036] The energy supply is also provided with a second shell 600, the second shell 600 is provided with a second opening, the second shell 600 is connected to the first shell 100, the second shell 600 is provided with a third side plate 610, a second bottom plate 620, a second end side plate 630, a second top cover plate 640 and a fourth side plate 650, the second bottom plate 620 is connected to the first bottom plate 110, the second side plate 150 is connected to the fourth side plate 650, the first end side plate 130 is connected to the second end side plate 630, and the first top cover plate 140 is connected to the second top cover plate 640.

[0037] It should be noted that when the second shell 600 is bent, the bending direction of the second shell 600 is determined according to the position of the first opening 160 of the first shell 100. When the first shell 100 is bent, the position of the second opening of the second shell 600 is determined according to whether the first side plate 120 is facing up or the back. When the first bottom plate 110 is facing down and the second side plate 150 is facing up, it is the first shell 100 with the first opening 160 on the right side. When the second shell 600 is assembled with the first shell 100, the first opening 160 is connected to the second opening, and the first side plate 120 is the opposite side of the second side plate 150, so that when the openings of the two energy-taking power sources are relatively assembled, the whole energy-taking power source is closed, thereby preventing metal foreign matter from entering the interior of the energy-taking power source during the production process.

[0038] The surfaces of the first shell 100 and the second shell 600 are both provided with heat dissipation holes 700. It should be noted that when the energy switch is working, the energy transformer 200 will generate a large amount of heat due to high voltage and strong current, which will affect the working performance and service life of the energy switch. In this embodiment, the surfaces of the first shell 100 and the second shell 600 are both provided with heat dissipation holes 700, thereby increasing the heat dissipation area of ​​the energy switch, improving the heat transfer efficiency, and effectively reducing the temperature of the energy transformer 200. In addition, the heat dissipation holes 700 can promote the air flow around the energy switch to form convection heat dissipation. The hot air is discharged from the inside of the energy switch through the heat dissipation holes, and the external cold air enters the inside of the energy switch through the heat dissipation holes 700, thereby forming a circulating flow of air and accelerating the heat dissipation of the energy transformer 200.

[0039] The high-voltage connecting wire 400 is made of silicone. It should be noted that the high-voltage connecting wire 400 is made of silicone, so that the high-voltage connecting wire 400 has good high-temperature resistance. Under high-temperature conditions, the high-voltage connecting wire 400 can still maintain stable electrical performance. In addition, silicone has high arc resistance, which makes the energy-taking switch lower than high-energy discharge when an arc occurs, reducing the occurrence of switch damage or accidents caused by arcs.

[0040] One end of the high-voltage energy-taking capacitor C1 is connected to the AC power supply, the other end of the high-voltage energy-taking capacitor C1 is respectively connected to the first end of the energy-taking transformer 200 and one end of the varistor 300, the second end of the energy-taking transformer 200 and the other end of the varistor 300 are both grounded, the third end of the energy-taking transformer 200 is grounded, and the fourth end of the energy-taking transformer 200 is connected to the load of the energy-taking power supply. It should be noted that in this embodiment, the transformation ratio of the energy-taking transformer 200 is 1000:24, the output power is 10VA, and it enters a saturation state at 1500V. Specifically, the energy-taking transformer 200 converts the AC power input by the high-voltage energy-taking capacitor C1 into a voltage suitable for the load, and the energy-taking transformer 200 is electrically connected to the high-voltage energy-taking capacitor C1 and the load respectively through the energy-taking transformer 200 to realize the conversion and transmission of electric energy, and the voltage fluctuation of the energy-taking transformer 200 is limited by the varistor 300, thereby protecting the load from the influence of voltage fluctuations, and further improving the service life of the energy-taking switch. In the description of this specification, the description with reference to the terms "one embodiment", "further embodiments", "some specific embodiments" or "some examples" etc. means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A power supply, characterized in that: include: A first shell, wherein the first shell is provided with a first opening; An energy transformer, wherein the energy transformer is provided with a high-voltage energy-taking capacitor, and the energy transformer is placed inside the first shell through the first opening; A varistor, the varistor is arranged inside the first housing, and the varistor is connected in parallel to the primary winding of the energy extraction transformer; A high-voltage connecting line is connected to the energy taking transformer and the high-voltage energy taking capacitor respectively.

2. The energy-taking power source according to claim 1, characterized in that: The first housing is also provided with secondary output terminals.

3. The energy-taking power source according to claim 1, characterized in that: A high-voltage energy-taking capacitor is also connected to the side opposite to the side where the high-voltage connecting line is connected to the energy-taking transformer.

4. The energy-taking power source according to claim 1, characterized in that: The first shell is provided with a first bottom plate, a first side plate, a first end side plate, a first top cover plate and a second side plate, the first end of the first side plate is connected to the first bottom plate, the second end of the first side plate is connected to the first end side plate, the third end of the first side plate is connected to the first top cover plate, and the fourth end of the first side plate is connected to the second side plate.

5. The energy-taking power source according to claim 4, characterized in that: The energy supply is also provided with a second shell, the second shell is provided with a second opening, the second shell is connected to the first shell, the second shell is provided with a third side plate, a second bottom plate, a second end side plate, a second top cover plate and a fourth side plate, the second bottom plate is connected to the first bottom plate, the second side plate is connected to the fourth side plate, the first end side plate is connected to the second end side plate, and the first top cover plate is connected to the second top cover plate.

6. The energy-taking power source according to claim 5, characterized in that: Heat dissipation holes are arranged on the surfaces of the first shell and the second shell.

7. The energy-taking power source according to claim 1, characterized in that: The high-voltage connecting wire is made of silicone.

8. The energy-taking power source according to claim 1, characterized in that: One end of the high-voltage energy-taking capacitor is connected to an AC power supply, and the other end of the high-voltage energy-taking capacitor is respectively connected to a first end of the energy-taking transformer and one end of the varistor, the second end of the energy-taking transformer and the other end of the varistor are both grounded, the third end of the energy-taking transformer is grounded, and the fourth end of the energy-taking transformer is connected to a load of the energy-taking power supply.

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