High-voltage rectification power supply assembly of weather radar

Abstract

The utility model provides a high-voltage rectification power supply assembly of a weather radar. The high-voltage rectification power supply assembly comprises an RC absorption circuit, a rectification circuit, a mode switch, an output adjusting knob and a sampling circuit. The input end of the RC absorption circuit is connected with 380V three-phase power, and the output end of the RC absorption circuit is connected with the rectifying circuit; the output end of the rectifying circuit is connected with the sampling circuit; the output end of the sampling circuit is connected with the measurement interface board. The mode switch and the output adjusting knob are respectively connected with the rectifying circuit; the mode switch is used for adjusting working states of the weather radar high-voltage rectification power supply assembly, and the working states comprise a normal working state and a maintenance state; and the output adjusting knob is used for changing the output voltage value of the rectifying circuit in a maintenance state. According to the utility model, the technical problem that the high-voltage rectification power supply assembly of the weather radar cannot quantitatively master the voltage adjustment amount from the AC 380V power supply source in the maintenance process can be solved.

Description

Technical Field

[0001] This utility model relates to the field of weather radar technology, specifically to a high-voltage rectifier power supply component for weather radar. Background Technology

[0002] Currently, the high-voltage circuit of weather radar has a relatively high probability of failure during operation. The main reasons are that the transmitter charging switch assembly IGBT and modulator, oil tank interface, high-voltage devices, and high-voltage cables are broken down by the instantaneous large current when the high voltage is applied, or arcing causes damage to the transmitter's front-end circuit, including the charging switch assembly, trigger, measurement interface board, main control board, etc. It may also damage the receiver and signal processor differential chip.

[0003] When a high-voltage circuit fails, the only current solution is to manually connect a three-phase voltage regulator to check the cause of the fault. This method cannot quantitatively determine the voltage adjustment amount from the AC 380V power supply head, which is not conducive to fault observation and detection. Moreover, the fault repair process is prone to escalation, increasing repair costs. On the other hand, it is difficult to locate the fault point. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a high-voltage rectifier power supply assembly for weather radar, thereby solving the technical problem that existing technologies cannot quantitatively control the voltage adjustment amount from the AC 380V power supply head during the maintenance of weather radars.

[0005] The technical solution adopted by this utility model is a high-voltage rectifier power supply component for a weather radar, including: an RC absorption circuit, a rectifier circuit, a mode switch, an output adjustment knob, and a sampling circuit.

[0006] The input terminal of the RC absorption circuit is connected to a 380V three-phase power supply, and the output terminal is connected to a rectifier circuit.

[0007] The input terminal of the rectifier circuit is connected to an RC snubber circuit, and the output terminal is connected to a sampling circuit.

[0008] The mode switch and output adjustment knob are respectively connected to the rectifier circuit; the mode switch is used to adjust the working state of the high-voltage rectifier power supply component of the weather radar, the working state including normal operation and maintenance state; the output adjustment knob is used to change the output voltage value of the rectifier circuit in the maintenance state.

[0009] The input terminal of the sampling circuit is connected to the rectifier circuit, and the output terminal is connected to the measurement interface board.

[0010] Furthermore, the output voltage of the rectifier circuit is 0–510V.

[0011] Furthermore, the high-voltage rectifier power supply assembly for the weather radar also includes a filter inductor, the input of which is connected to the rectifier circuit and the output of which is connected to the sampling circuit.

[0012] Furthermore, the high-voltage rectifier power supply assembly for the weather radar also includes a voltage display circuit, the input of which is connected to the output of the rectifier circuit via a filter inductor.

[0013] Furthermore, the voltage display circuit uses a digital tube for numerical display.

[0014] Furthermore, the mode switch is selected as a push-button self-locking switch or a rocker switch.

[0015] Furthermore, the output adjustment knob is a manual adjustment potentiometer.

[0016] As can be seen from the above technical solution, the beneficial technical effects of this utility model are as follows:

[0017] The output voltage of the high-voltage rectifier power supply component of the weather radar can be manually and quantitatively adjusted from 0V to 510V during transmitter fault repair. This allows the manual line high voltage to be slowly increased from 0V to 4KV, enabling the high-voltage characteristics of high-voltage components such as switching components and modulators to be checked under low voltage conditions. This avoids damage to components under high voltage conditions, reduces maintenance costs, achieves the goal of accurately locating fault points, improves transmitter fault diagnosis efficiency, and shortens transmitter high-voltage fault repair time. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a block diagram illustrating the electrical principle of the high-voltage rectifier power supply assembly for a weather radar according to an embodiment of this utility model.

[0020] Figure 2 This is a circuit diagram of the RC absorption circuit of the high-voltage rectifier power supply component for a weather radar according to an embodiment of the present invention.

[0021] Figure 3 This is a circuit diagram of the rectifier circuit, mode switch, and output adjustment knob of the high-voltage rectifier power supply assembly for the weather radar according to an embodiment of this utility model.

[0022] Figure 4 This is a circuit diagram of the filter inductor, sampling circuit, and voltage display circuit of the high-voltage rectifier power supply component for a weather radar according to an embodiment of this utility model. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0025] Example

[0026] This embodiment provides a high-voltage rectifier power supply component for a weather radar, such as... Figure 1 As shown, it includes: an RC snubber circuit, a rectifier circuit, a mode switch and an output adjustment knob, as well as a sampling circuit.

[0027] An RC snubber circuit has its input connected to a 380V three-phase power supply and its output connected to a rectifier circuit. The RC snubber circuit is used to absorb grid pollution caused by external power grid interference and phase-shift modulation. Its circuit diagram is shown below. Figure 2 As shown, it includes capacitors C1, C2, C3, C7, C8, C11, and resistors R1, R2, R3, R5, R6, R9.

[0028] The rectifier circuit has an input terminal connected to an RC snubber circuit and an output terminal connected to a sampling circuit, and also passes through... Figure 3 The rectifier board designated A2A1 is connected to the mode switch and the output adjustment knob, respectively. The rectifier circuit outputs an adjustable DC voltage from 0 to 510V, and its circuit diagram is shown below. Figure 3 As shown in some embodiments, the output of the rectifier circuit is first connected to a filter inductor, and then connected to a sampling circuit through the filter inductor. The filter inductor can filter out low-frequency interference in the DC voltage output by the rectifier circuit, and its circuit structure diagram is shown in the figure. Figure 4 As shown.

[0029] The mode switch and output adjustment knob are connected to the rectifier circuit. The mode switch is used to adjust the operating status of the high-voltage rectifier power supply component of the weather radar. There are two operating states: normal operation and maintenance. When the mode switch is selected as normal operation, the rectifier module stably outputs a 510V DC voltage. When the mode switch is selected as maintenance operation, the output DC voltage output by the rectifier circuit can be changed via the output adjustment knob. Its circuit diagram is shown below. Figure 3 As shown, in Figure 3 The diagram only shows the connection between the mode switch, output adjustment knob, and rectifier circuit; the RC snubber circuit is not shown. In a specific implementation, the mode switch can be a push-button lockout switch or a rocker switch, and the output adjustment knob can be a manual adjustment potentiometer.

[0030] The sampling circuit has its input connected to a rectifier circuit; in some embodiments, the sampling circuit may also be connected to the rectifier circuit via a filter inductor. The rectifier circuit is used for low-voltage sampling, extracting approximately 1% of the 0-510V DC voltage and outputting it to the transmitter's measurement interface board; its circuit diagram is shown below. Figure 4 As shown.

[0031] In some embodiments, the high-voltage rectifier power supply assembly for weather radar also includes a voltage display circuit. The input terminal of the voltage display circuit is connected to the output of the rectifier circuit via a filter inductor, providing real-time digital display of the DC voltage output by the rectifier module. This makes the output voltage readily apparent and facilitates maintenance and repair. Its circuit diagram is shown below. Figure 4 As shown; in a specific implementation, a digital tube can be used for numerical display.

[0032] The high-voltage rectifier power supply component for weather radar provided in this embodiment is suitable for S-band klystron type weather radar. Its output voltage can be manually and quantitatively adjusted from 0V to 510V during transmitter fault repair. In this way, the manual line high voltage can also be slowly increased from 0V to 4KV. This allows high-voltage components such as switching components and modulators to be checked for high-voltage characteristics in a low-voltage environment, avoiding the easy damage of components under high voltage conditions, reducing maintenance costs, achieving the goal of accurately locating the fault point, improving the efficiency of transmitter fault diagnosis, and shortening the transmitter high-voltage fault repair time.

[0033] The high-voltage rectifier power supply component for weather radar provided in this embodiment has the same signal characteristics as the original rectifier power supply component in its interface circuit. It can directly replace the original rectifier power supply component without changing any circuit of the original transmitter, which is more conducive to transmitter repair and maintenance. It has the characteristics of high reliability and good compatibility.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A high-voltage rectifier power supply assembly for a weather radar, characterized in that, include: RC snubber circuit, rectifier circuit, mode switch, output adjustment knob and sampling circuit; The input terminal of the RC absorption circuit is connected to a 380V three-phase power supply, and the output terminal is connected to a rectifier circuit. The input terminal of the rectifier circuit is connected to an RC snubber circuit, and the output terminal is connected to a sampling circuit. The mode switch and output adjustment knob are respectively connected to the rectifier circuit; the mode switch is used to adjust the working state of the high-voltage rectifier power supply component of the weather radar, the working state including normal operation and maintenance state; the output adjustment knob is used to change the output voltage value of the rectifier circuit in the maintenance state. The input terminal of the sampling circuit is connected to the rectifier circuit, and the output terminal is connected to the measurement interface board.

2. The high-voltage rectifier power supply assembly for weather radar according to claim 1, characterized in that, The output voltage of the rectifier circuit is 0~510V.

3. The high-voltage rectifier power supply assembly for weather radar according to claim 1, characterized in that, It also includes a filter inductor, the input of which is connected to a rectifier circuit and the output of which is connected to a sampling circuit.

4. The high-voltage rectifier power supply assembly for weather radar according to claim 2, characterized in that, It also includes a voltage display circuit, the input of which is connected to the output of the rectifier circuit via a filter inductor.

5. The high-voltage rectifier power supply assembly for weather radar according to claim 4, characterized in that, The voltage display circuit uses a digital tube to display the numerical value.

6. The high-voltage rectifier power supply assembly for weather radar according to claim 3, characterized in that, The mode switch is either a push-button self-locking switch or a rocker switch.

7. The high-voltage rectifier power supply assembly for weather radar according to claim 3, characterized in that, The output adjustment knob is a manual adjustment potentiometer.

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