High-pressure gas switching circuit

Abstract

The utility model provides a high-voltage gas switching circuit, which specifically comprises a high-voltage capacitor C1, a high-voltage gas switch K1, a divider resistor R1 and a load L1, wherein one end of the high-voltage capacitor C1 is connected with one end of the divider resistor R1, and the other end of the divider resistor R1 serves as a voltage detection end and is connected with an external voltage detection circuit; the other end of the high-voltage capacitor C1 is connected with one end of a load L1, and the other end of the load L1 is grounded; a first end of the high-pressure gas switch K1 is connected with one end of the high-pressure capacitor C1, a second end of the high-pressure gas switch K1 is connected with the other end of the load L1, and a trigger end of the high-pressure gas switch K1 is connected with an external trigger signal; and one end of the high-voltage capacitor C1 is connected with an external charging power supply. One end of the high-voltage gas switch K1 and one end of the load are grounded, so that the safety of the circuit is improved, and energy is stored through the high-voltage capacitor C1, so that high current and high voltage are generated instantly through discharging of the high-voltage capacitor C1.

Description

Technical Field

[0001] This utility model relates to the field of circuit technology, and in particular to a high-pressure gas switch circuit. Background Technology

[0002] Currently, the application of high-voltage (greater than 10KV) switches in specific occasions such as medical health and scientific research is limited by a variety of factors. These limitations mainly involve control difficulty, safety risks, cost-effectiveness, space occupation and layout, adaptability of experimental subjects and environment, as well as technology and human resources.

[0003] In other words, how to provide a high-voltage gas switch circuit that has high safety and low cost, and can be used in scenarios that require instantaneous generation of high voltage or high current, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] In view of the above-mentioned problems, the present invention aims to provide a high-pressure gas switching circuit that solves at least one of the above-mentioned technical problems.

[0005] This utility model provides a high-pressure gas switch circuit, the high-pressure gas switch circuit comprising:

[0006] High-voltage capacitor C1, high-voltage gas switch K1, voltage divider resistor R1, and load L1;

[0007] In this configuration, one end of the high-voltage capacitor C1 is connected to one end of the voltage divider resistor R1, and the other end of the voltage divider resistor R1 serves as a voltage detection terminal connected to an external voltage detection circuit; the other end of the high-voltage capacitor C1 is connected to one end of the load L1, and the other end of the load L1 is grounded; the first end of the high-voltage gas switch K1 is connected to one end of the high-voltage capacitor C1, the second end of the high-voltage gas switch K1 is connected to the other end of the load L1, and the trigger terminal of the high-voltage gas switch K1 is connected to an external trigger signal; one end of the high-voltage capacitor C1 is connected to an external charging power supply.

[0008] Preferably, the high-pressure gas switching circuit further includes:

[0009] A voltage detection resistor R2 is provided, with one end connected to the voltage detection terminal and the other end grounded. An external voltage detection circuit is connected in parallel across the voltage detection resistor R2.

[0010] Preferably, the resistance of the voltage sensing resistor R2 is 50MΩ.

[0011] Preferably, the resistance of the voltage divider resistor R1 is 50MΩ.

[0012] Preferably, the charging power source is a constant current source.

[0013] Preferably, the load L1 is an electromagnet-type shock wave lithotripter.

[0014] Preferably, the load L1 is a gas lamp.

[0015] Preferably, the load L1 is an electromagnetic pulse generator.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Specifically, this utility model provides a high-voltage gas switch circuit, including a high-voltage capacitor C1, a high-voltage gas switch K1, a voltage divider resistor R1, and a load L1. One end of the high-voltage capacitor C1 is connected to one end of the voltage divider resistor R1, and the other end of the voltage divider resistor R1 serves as a voltage detection terminal connected to an external voltage detection circuit. The other end of the high-voltage capacitor C1 is connected to one end of the load L1, and the other end of the load L1 is grounded. The first end of the high-voltage gas switch K1 is connected to one end of the high-voltage capacitor C1, and the second end of the high-voltage gas switch K1 is connected to the other end of the load L1. The trigger terminal of the high-voltage gas switch K1 is connected to an external trigger signal. One end of the high-voltage capacitor C1 is connected to an external charging power supply. This application improves circuit safety by grounding the high-voltage gas switch K1 and one end of the load. The switching on and off of the high-voltage gas switch K1 causes the high-voltage capacitor C1 to be in a discharging and charging state respectively, storing energy through the high-voltage capacitor C1 to generate high current and high voltage instantaneously during discharge. This application achieves high safety and low cost.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the connection of the high-pressure gas switch circuit in an embodiment of this application;

[0021] Figure 2 This is the voltage curve of terminal P1 during normal charging in the embodiments of this application;

[0022] Figure 3 This is the voltage curve at terminal P1 under the condition of capacitor or load being disconnected in the embodiments of this application;

[0023] Figure 4 This is a curve showing the current versus time applied to the load during the discharge of the high-voltage capacitor in an embodiment of this application. Detailed Implementation

[0024] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art are within the scope of protection of this utility model; wherein the keyword "and / or" involved in this embodiment indicates two situations, and or. In other words, A and / or B mentioned in the embodiments of this specification indicates two situations, A and B, and A or B, describing three states of A and B. For example, A and / or B means: only A is included and not B; only B is included and not A; and A and B are included.

[0025] Furthermore, in the embodiments of this specification, when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component present.

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] Example 1

[0028] Please see Figure 1-4Specifically, in this embodiment of the high-pressure gas switch circuit, the high-pressure gas switch circuit provided in this application specifically includes: a high-pressure capacitor C1, a high-pressure gas switch K1, a voltage divider resistor R1, and a load L1; one end of the high-pressure capacitor C1 is connected to one end of the voltage divider resistor R1, and the other end of the voltage divider resistor R1 serves as a voltage detection terminal connected to an external voltage detection circuit; the other end of the high-pressure capacitor C1 is connected to one end of the load L1, and the other end of the load L1 is grounded; the first end of the high-pressure gas switch K1 is connected to one end of the high-pressure capacitor C1, the second end of the high-pressure gas switch K1 is connected to the other end of the load L1, and the trigger terminal of the high-pressure gas switch K1 is connected to an external trigger signal; one end of the high-pressure capacitor C1 is connected to an external charging power supply.

[0029] Specifically, this utility model embodiment provides a high-voltage gas switch circuit, including a high-voltage capacitor C1, a high-voltage gas switch K1, a voltage divider resistor R1, and a load L1. One end of the high-voltage capacitor C1 is connected to one end of the voltage divider resistor R1, and the other end of the voltage divider resistor R1 serves as a voltage detection terminal connected to an external voltage detection circuit. The other end of the high-voltage capacitor C1 is connected to one end of the load L1, and the other end of the load L1 is grounded. The first end of the high-voltage gas switch K1 is connected to one end of the high-voltage capacitor C1, and the second end of the high-voltage gas switch K1 is connected to the other end of the load L1. The trigger terminal of the high-voltage gas switch K1 is connected to an external trigger signal. One end of the high-voltage capacitor C1 is connected to an external charging power supply. This embodiment improves circuit safety by grounding the high-voltage gas switch K1 and one end of the load. The high-voltage capacitor C1 is in a discharging and charging state corresponding to the conduction and cutoff of the high-voltage gas switch K1, storing energy through the high-voltage capacitor C1 to generate high current and high voltage instantaneously during discharge. This application achieves high safety and low cost.

[0030] The high-voltage gas switch K1 is a switch device with built-in inert gas that is insulating when there is no breakdown and conducting after breakdown. The advantages of this switch are that it has a high withstand voltage of over 30KV, a withstand current of over 100A, relatively low cost, and simple operation. That is, applying a certain voltage to the trigger terminal will make the entire internal space completely conductive.

[0031] In one possible implementation, the high-pressure gas switch circuit further includes a voltage detection resistor R2, one end of which is connected to a voltage detection terminal, and the other end of which is grounded. An external voltage detection circuit is connected in parallel across the voltage detection resistor R2, thereby allowing the voltage value across the voltage detection resistor R2 to be detected by the external voltage detection circuit.

[0032] Specifically, the charge flows from the P2 terminal through the high-voltage capacitor C1 to the load L1. At this time, the current is very small (<100mA), and the load L1 is equivalent to a short circuit, with the current flowing directly through the load L1 to the ground wire; the P1 terminal is for voltage detection feedback. Figure 2 The voltage curve at terminal P1 during normal charging is shown. Figure 3 This is the voltage curve at terminal P1 when the capacitor or load is open.

[0033] When the high-voltage capacitor C1 charges to the set value and stops charging, a brief breakdown voltage is generated between terminals P3 and P4, causing the high-voltage gas switch K1 to break down and short-circuit. At this time, the charging input port (P2 terminal) of the high-voltage capacitor C1 will be short-circuited to ground, and the charge of the high-voltage capacitor C1 will be output to the load L1. Figure 4 The curve represents the current applied to the load L1 as a function of time when the high-voltage capacitor C1 discharges.

[0034] As attached Figure 1 As shown, the charging level of the capacitor can be detected by connecting terminal P1 (voltage detection terminal) to an external voltage detection circuit; a constant current source can be connected between terminals P2 and P5 to charge the high-voltage capacitor C1; terminals P4 and P5 in the attached diagram are common ground terminals, and an external trigger circuit can be connected between P3 and P4 to trigger the high-voltage gas switch K1 to conduct. Terminals P1, P2, P3, P4, and P5 are configured to facilitate connection to external circuits.

[0035] It is understood that in the circuit provided by this application, the capacitor will be left floating after the load disconnects and will not be charged. Furthermore, the voltage curve during voltage charging can be analyzed on the system to determine whether there is any floating equipment in the system.

[0036] In one possible implementation, the voltage sensing resistor R2 has a resistance of 50 MΩ.

[0037] In one possible implementation, the voltage divider resistor R1 has a resistance of 50MΩ, which reduces the voltage at the voltage detection terminal to a safe voltage and forms a proportional signal with the voltage of the capacitor.

[0038] In one possible implementation, the charging power supply is a constant current source. This constant current source outputs a constant current, which is then used to charge the high-voltage capacitor C1.

[0039] In one possible implementation, the load L1 is any one of an electromagnet-type shock wave lithotripter, a gas lamp, and an electromagnetic pulse generator.

[0040] The circuit provided in this application is suitable for use in scenarios that require instantaneous generation of high current (>100A / 10uS) or high voltage (>10KV), such as electromagnetic disc shock wave crushers, gas lamps, electromagnetic pulse generators, etc.

[0041] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the present utility model's technical solution shall still fall within the scope of the present utility model's technical solution.

Claims

1. A high-pressure gas switching circuit, characterized in that, The high-pressure gas switch circuit includes: High-voltage capacitor C1, high-voltage gas switch K1, voltage divider resistor R1, and load L1; In this configuration, one end of the high-voltage capacitor C1 is connected to one end of the voltage divider resistor R1, and the other end of the voltage divider resistor R1 serves as a voltage detection terminal connected to an external voltage detection circuit; the other end of the high-voltage capacitor C1 is connected to one end of the load L1, and the other end of the load L1 is grounded; the first end of the high-voltage gas switch K1 is connected to one end of the high-voltage capacitor C1, the second end of the high-voltage gas switch K1 is connected to the other end of the load L1, and the trigger terminal of the high-voltage gas switch K1 is connected to an external trigger signal; one end of the high-voltage capacitor C1 is connected to an external charging power supply.

2. The high-pressure gas switching circuit as described in claim 1, characterized in that, The high-pressure gas switch circuit also includes a voltage detection resistor R2, one end of which is connected to the voltage detection terminal, and the other end of which is grounded. The external voltage detection circuit is connected in parallel across the voltage detection resistor R2.

3. The high-pressure gas switching circuit as described in claim 2, characterized in that, The voltage sensing resistor R2 has a resistance of 50MΩ.

4. The high-pressure gas switching circuit as described in claim 1, characterized in that, The resistance of the voltage divider resistor R1 is 50MΩ.

5. The high-pressure gas switching circuit as described in claim 1, characterized in that, The charging power source is a constant current source.

6. The high-pressure gas switching circuit as described in claim 1, characterized in that, The load L1 is an electromagnet-type shock wave rock crusher.

7. The high-pressure gas switching circuit as described in claim 1, characterized in that, The load L1 is a gas lamp.

8. The high-pressure gas switching circuit as described in claim 1, characterized in that, The load L1 is an electromagnetic pulse generator.

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