A high-precision gas circuit control and monitoring integrated device

Abstract

The utility model relates to the technical field of gas circuit control provides a kind of high-precision gas circuit control and monitoring integrated device.The device includes control unit and multiple gas transmission pipeline, each gas transmission pipeline is sequentially provided with first pressure detection unit, first pressure regulating element, second pressure detection unit and second pressure regulating element along gas transmission direction, third pressure detection unit is also provided in gas chamber.Wherein, first pressure detection unit and second pressure detection unit respectively monitor the pressure value before and after first pressure regulating element, third pressure detection unit monitors the pressure value of output end gas chamber;Control unit controls first pressure regulating element according to the difference of the pressure value before and after first pressure regulating element, controls second pressure regulating element according to the difference of preset pressure value and gas chamber pressure value.This device realizes accurate regulation and control to the pressure of different stages of gas circuit by multistage pressure detection and grading pressure regulation, effectively improves the precision, stability and reliability of gas circuit control, and is suitable for a variety of scenes needing to accurately control gas chamber pressure.

Description

Technical Field

[0001] This utility model relates to the field of gas path control technology, specifically to a high-precision integrated device for gas path control and monitoring. Background Technology

[0002] The pneumatic circuit system is a crucial component ensuring the stable, safe, and efficient operation of the entire high-power pulse power supply system. Its main functions include insulation protection, arc extinguishing and cooling, pressure regulation and stability assurance, and improved environmental adaptability. Therefore, in the field of high-power pulse power supplies, the stability and reliability of the pneumatic circuit system are of paramount importance to the performance of the entire system.

[0003] Existing gas supply systems are inadequate in terms of independent gas supply regulation, pressure monitoring, and system integration, making it difficult to meet the high precision and reliability requirements of high-power pulse sources for gas control. Specifically:

[0004] The independent regulation capability of the gas supply is weak, making it difficult to achieve differentiated and precise control for different gases (such as insulating gases and auxiliary gases);

[0005] Insufficient pressure monitoring accuracy makes it impossible to provide real-time and accurate feedback on the pressure status of pipelines and gas chambers, which can easily lead to lag in regulation.

[0006] The system has low integration and poor coordination between its components (such as sensors, regulating valves, and control modules), making maintenance and troubleshooting difficult.

[0007] Insufficient safety and reliability, lack of a sound protection mechanism, difficulty in responding quickly in the event of gas leaks or abnormal pressure, and difficulty in meeting the high precision and high reliability requirements of high-power pulse sources for gas control.

[0008] Therefore, it is necessary to study a high-precision integrated device for gas path control and monitoring to overcome the shortcomings of existing technologies. Utility Model Content

[0009] Based on the above description, in order to solve at least one technical problem pointed out in the background art, this utility model provides a high-precision gas path control and monitoring integrated device, which has the advantages of high control accuracy, high safety, strong reliability, good environmental adaptability and autonomous controllability, and is suitable for various application scenarios that require precise control of the gas path.

[0010] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A high-precision gas path control and monitoring integrated device includes a control unit and multiple gas transmission pipelines. Each gas transmission pipeline is provided with a first pressure detection unit, a first pressure regulating element, a second pressure detection unit, and a second pressure regulating element in sequence along the gas transmission direction. The output end of the gas transmission pipeline is also provided with a third pressure detection unit, wherein:

[0011] The first pressure detection unit is used to monitor the first pressure value at the front end of the first pressure regulating element;

[0012] The second pressure detection unit is used to monitor the second pressure value at the rear end of the first pressure regulating element;

[0013] The third pressure detection unit is used to monitor the third pressure value of the gas chamber at the output end of the gas pipeline;

[0014] The control unit is configured to output a first pressure regulating signal based on the difference between the first pressure value and the second pressure value, and to output a second pressure regulating signal based on the difference between the preset pressure value and the third pressure value.

[0015] The first voltage regulating element is used to adjust the opening degree according to the first voltage regulating signal;

[0016] The second voltage regulating element is used to adjust the opening degree according to the second voltage regulating signal.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] The device provided by this utility model can independently supply gas to the gas chambers of multiple key components in the power supply by setting up multiple independent gas supply pipelines. By setting up multi-stage pressure detection units and pressure regulating elements in the gas supply pipelines of the power supply gas chamber, the control unit outputs pressure regulating signals according to different pressure differences, realizing precise control of the pressure at different stages of the pipeline. This can effectively improve the accuracy and stability of the gas circuit control, ensure that the pressure of the gas chamber at the end of the gas supply meets the preset requirements, and enhance the flexibility and reliability of the system pressure regulation.

[0019] Based on the above technical solution, the present invention can be further improved as follows.

[0020] Furthermore, the input end of the gas pipeline is also equipped with a switching element.

[0021] Furthermore, the switching element has both manual control components and automatic control components.

[0022] Furthermore, the input ends of multiple gas pipelines are connected to a gas source to form a main gas path.

[0023] Furthermore, the device is provided with multiple main air passages, the pipelines of which are independent of each other and are respectively connected to the control unit.

[0024] Furthermore, the control unit includes a control module and an actuator, wherein:

[0025] The control module is used to output a first pressure regulating signal based on the difference between the first pressure value and the second pressure value, and to output a second pressure regulating signal based on the difference between the preset pressure value and the third pressure value.

[0026] The actuator is used to control the opening degree of the first voltage regulating element according to the first voltage regulating signal, and to control the opening degree of the second voltage regulating element according to the second voltage regulating signal.

[0027] Furthermore, the control unit also includes a display, which is communicatively connected to the control module.

[0028] Furthermore, the actuator includes a drive module and a relay group, wherein:

[0029] The drive module is connected to the control module and is used to convert the first voltage regulation signal into a first drive signal, and / or convert the second voltage regulation signal into a second drive signal;

[0030] The relay group is connected to the drive module and is used to control the opening degree of the first voltage regulating element according to the first drive signal, and / or to control the opening degree of the second voltage regulating element according to the second drive signal.

[0031] Furthermore, the first pressure regulating element is a pressure reducing valve.

[0032] Furthermore, the second pressure regulating element is a servo regulating valve. Attached Figure Description

[0033] Figure 1 A schematic diagram of a high-precision gas path control and monitoring integrated device provided for an embodiment of this utility model;

[0034] Figure 2 A flowchart illustrating the pressure boosting process of the device provided in this embodiment of the utility model;

[0035] Figure 3 A block diagram illustrating the working principle of the control unit provided in this embodiment of the utility model;

[0036] Figure 4 A schematic diagram illustrating the connection principle between the control module and the display provided in this embodiment of the utility model;

[0037] Figure 5 A schematic diagram illustrating the connection principle between the control module and the actuator provided in this embodiment of the utility model;

[0038] Figure 6 This is a schematic diagram of the control flow of the control unit provided in an embodiment of the present utility model. Detailed Implementation

[0039] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0041] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "under" or "below" of other elements or features will be oriented "over" of other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0042] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0043] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0044] like Figure 1 As shown, this utility model provides a high-precision gas path control and monitoring integrated device, including a control unit (not shown in the figure) and multiple gas delivery pipelines. Each gas delivery pipeline is provided with a first pressure detection unit (e.g., along the gas delivery direction) in sequence. Figure 1Pressure sensors 1-16 in the middle), first pressure regulating element (e.g. Figure 1 Pressure reducing valves 1-16 in the middle), and the second pressure detection unit (e.g. Figure 1 Pressure sensors 17-32) and second pressure regulating element (e.g. Figure 1 The pressure regulating valves 1-16 (preferably servo regulating valves) are used in the gas supply pipeline. The output end of the gas supply pipeline is connected to the gas filling channel of the power supply gas chamber via a flange. A third pressure detection unit (not shown in the figure, which can be implemented using a pressure sensor or pressure transmitter) is also provided at the output end of the gas supply pipeline or in the gas chamber.

[0045] The first pressure detection unit is used to monitor the first pressure value at the front end of the first pressure regulating element;

[0046] The second pressure detection unit is used to monitor the second pressure value at the rear end of the first pressure regulating element;

[0047] The third pressure detection unit is used to monitor the third pressure value of the gas chamber at the output end of the gas pipeline;

[0048] The control unit is configured to output a first pressure regulating signal based on the difference between the first pressure value and the second pressure value, and to output a second pressure regulating signal based on the difference between the preset pressure value and the third pressure value.

[0049] The first voltage regulating element is used to adjust the opening degree according to the first voltage regulating signal;

[0050] The second voltage regulating element is used to adjust the opening degree according to the second voltage regulating signal.

[0051] It is understandable that high-power pulsed power supplies typically contain multiple critical components requiring insulation or arc-extinguishing protection (such as multiple gas switches, high-voltage electrode gaps in different areas, etc.). These components may be distributed in different locations within the power system, and their pressure and flow rate requirements for sulfur hexafluoride in the gas chamber may differ. The device provided in this embodiment, by setting up multiple independent gas supply lines, can achieve independent gas supply to each component, avoiding problems such as uneven pressure distribution and insufficient flow caused by a single branch supplying multiple components. This ensures that each critical component receives sulfur hexafluoride gas that meets its operating conditions (such as insulation protection at specific pressures).

[0052] The design of multiple gas pipelines can also form redundancy backup: when a gas pipeline fails, the normal operation of core components can be maintained by shutting down the faulty pipeline, activating the backup pipeline, or adjusting the gas supply parameters of other pipelines, thereby reducing the probability of overall failure of the power system due to a single point of failure.

[0053] Furthermore, different components in the power system may have different requirements for the pressure accuracy of sulfur hexafluoride gas (for example, components in high-voltage areas require higher gas pressure to ensure insulation strength, while components in low-voltage areas can have appropriately lower gas pressure). This device's control unit enables differentiated adjustment of each gas pipeline, performing precise closed-loop control for the target pressure of each pipeline. This avoids the "one-size-fits-all" effect of adjusting a single pipeline, thus improving the overall control accuracy of the gas system.

[0054] Furthermore, when upgrading, repairing, or expanding the functionality of the power system (such as adding new high-pressure components), the design of multiple gas pipelines can directly expand the gas supply by adding new branch interfaces, without the need for large-scale modifications to the original main pipeline, thus reducing expansion costs.

[0055] The device provided in this embodiment sets up multiple independent gas supply pipelines, and sets up multi-level pressure detection units and pressure regulating elements in the gas supply pipeline of the power supply gas chamber. The control unit outputs pressure regulating signals according to different pressure differences, so as to realize precise control of the pressure at different stages of the pipeline. This can effectively improve the accuracy and stability of gas circuit control, ensure that the pressure of the gas supply terminal gas chamber meets the preset requirements, and enhance the flexibility and reliability of system pressure regulation.

[0056] In one possible implementation, to switch the connection / disconnection state between the gas pipeline and the gas source, i.e., to control whether the gas pipeline is connected to the gas source, the input end of the gas pipeline is also provided with a switching element. For ease of operation, this switching element has a manual control component (to support manual operation mode) and an automatic control component (to support electric control mode). For example... Figure 1 As shown in Figures 1 to 16, a shut-off valve is installed at the input end of each gas pipeline. This shut-off valve serves as the main switch for its respective gas pipeline, and can disconnect or connect the gas pipeline to the gas source.

[0057] In one possible implementation, to share a common gas source and save equipment costs, the input ends of multiple gas pipelines are connected to the same gas source to form a main gas path. Depending on power requirements, multiple independent main gas paths can be configured, with each main gas path having its own independent pipeline and a separate control connection to the control unit.

[0058] For example Figure 1As shown, a main gas path for sulfur hexafluoride (SF6) gas and a main gas path for zero-grade air are respectively set up. SF6 gas is delivered to the gas switch and high-voltage electrode gap via the SF6 main gas path. In the gas switch, its excellent insulation and arc-extinguishing properties ensure that the circuit is effectively cut off during opening and closing, preventing damage caused by a persistent electric arc. In the high-voltage electrode gap, SF6 gas is filled, and its high insulation strength prevents breakdown discharge between the electrodes, ensuring stable operation of the power supply under high-voltage conditions. Zero-grade air is delivered to the gas path used for purging and cleaning, as well as to relevant parts of the power supply involved in pressure balancing and auxiliary regulation. For example, before experiments or during equipment maintenance, zero-grade air is delivered to pipelines and gas chambers to purge residual impurities and keep the power supply clean. When involved in pressure balancing and auxiliary regulation, zero-grade air enters the corresponding pressure regulating gas path, working with other gases to achieve precise pressure control of the entire gas system.

[0059] Figure 2 The process of pressurizing (i.e., charging) the power supply's gas chamber is illustrated. Combined with... Figure 1 and Figure 2 As shown, before filling the gas supply pipeline, ensure that the gas chambers inside each gas switch of the power supply are filled with the required specific gas, and that the gas purity and pressure meet the preset parameters. If the gas is contaminated or other problems cause insufficient gas pressure, the gas replenishment operation must be performed again; if a gas leak is detected, the leak location in the pipeline should be checked and dealt with promptly; if the gas purity does not meet the standard, fresh gas must be added until the pressure and purity meet the test requirements.

[0060] During the pressure regulation phase, the control unit first sets the target operating pressure and issues commands, simultaneously receiving pressure commands and real-time pressure data from pressure sensors to schedule the various gas transmission pipeline systems. The control unit calculates the pressure deviation to generate control quantities, which then adjust the valve core displacements of each valve (the first and second pressure regulating elements) in the gas transmission pipelines, adjusting their openings to the initial regulation state corresponding to the operating pressure, completing the coarse adjustment process. Subsequently, based on the pressure feedback data from the stable phase, the system enters closed-loop regulation mode, continuously optimizing the regulation parameters until the pressure value stabilizes.

[0061] The principle of boost operation is as follows: Figure 2 As shown. During the pressurization process, the shut-off valve is opened in the operating sequence, and the opening of the pressure reducing valve and regulating valve is controlled to increase the pressure at a stable rate. When the output pressure sensor detects that the system pressure has reached 90% of the target value, the valve opening is gradually reduced, switching to a low-speed pressurization mode, until the pressure accurately reaches the target value, and finally the relevant valves are closed to complete the pressurization operation.

[0062] by Figure 1Taking the illustrated gas circuit as an example, during pressure regulation, the shut-off valve primarily controls the overall opening / closing of the gas pipeline. The second pressure regulating element (i.e., the regulating valve), combined with the third pressure detection unit, forms a closed-loop control, mainly regulating the pressure in the gas chamber through the gas pipeline. The first and second pressure detection units, combined with the first pressure regulating element, serve as supplementary components to the regulating valve or pressure control components for specific stages. They are mainly used to stabilize the gas source output pressure, prevent the high pressure from the gas source from impacting the pipeline when the shut-off valve is first opened, and ensure the safety and precision control of the gas pipeline. This is because the initial pressure of the gas source (such as a sulfur hexafluoride cylinder or a zero-level air storage tank) is usually much higher than the operating pressure required by the system (for example, the cylinder pressure may reach tens of megapascals, while the device operating pressure may only require a few megapascals). Pressure reducing valves reduce high-pressure gas sources to the target pressure required by the system through mechanical or electronic adjustment mechanisms, and maintain stable output pressure. This prevents gas source pressure fluctuations (such as pressure drops caused by reduced gas cylinder capacity) from affecting the accuracy of gas circuit control. It also prevents high-pressure gas from directly entering downstream circuits and avoids sensor damage, pipeline leaks, or switch component failures due to overpressure, thus protecting core components.

[0063] To facilitate closed-loop regulation of the gas pipeline, the pressure reducing valve (or servo regulating valve), as a key component of the actuator in the PID control logic of this device, receives analog signals from the control unit and achieves precise pressure control by fine-tuning its opening. For example, during the pressurization phase, the pressure reducing valve gradually adjusts its output pressure based on real-time data from its downstream pressure sensor, first increasing the pressure at a stable rate to 90% of the target value, then switching to a low-speed pressurization, working in conjunction with the regulating valve to ultimately achieve high-precision pressure stability.

[0064] Pressure reducing valves can also create physical isolation between the gas source and the downstream gas path. When a system malfunctions (such as pipeline leakage or abnormal pressure), they can work with shut-off valves to quickly cut off the high-pressure gas source, prevent the spread of danger, and improve the safety of the system.

[0065] In one possible implementation, such as Figure 3 As shown, the control unit includes a control module and an actuator, wherein:

[0066] The control module employs a microcontroller to receive detection signals from various sensors and parse them into corresponding detection values ​​(e.g., a first pressure value, a second pressure value, and a third pressure value). It outputs a first pressure regulating signal based on the difference between the first pressure value and the second pressure value in the same gas pipeline, and outputs a second pressure regulating signal based on the difference between a preset pressure value and the third pressure value.

[0067] The actuator is used to control the opening / closing of various valves in the gas pipeline, for example, controlling the opening degree of the first pressure regulating element according to the first pressure regulating signal, and controlling the opening degree of the second pressure regulating element according to the second pressure regulating signal.

[0068] Understandably, the control unit of the pneumatic system, combined with pressure sensors, a microcontroller, and actuators, can automatically control the inflation process. For example, the sensor detects the internal pressure of the air chamber and transmits it to the microcontroller. When the pressure exceeds its preset value, the microcontroller automatically controls the operation of the actuators (such as motors and solenoid valves) to change the inflation state of the air supply line to meet the inflation requirements of the air chamber. In case of abnormality, the auxiliary function unit can report the fault to the control unit and automatically cut off the power supply to ensure the safety of air chamber inflation.

[0069] like Figure 5 As shown in the circuit diagram, the microcontroller can be implemented using a single-chip microcomputer and its peripheral circuits. For example, the STC12C5A60S2 single-chip microcomputer can be used as the main control chip of the microcontroller, which works in conjunction with the control system software. The instruction code of the STC12C5A60S2 / AD / PWM series single-chip microcomputer is fully compatible with that of the 8051 single-chip microcomputer, but its speed is more than 10 times that of the commonly used 8051 single-chip microcomputer. It includes a dedicated watchdog reset circuit, four timer / counters, two pulse width modulation outputs, and eight high-speed 10-bit analog-to-digital converter outputs, and features high cost performance and powerful functions.

[0070] In one possible implementation, the actuator includes a drive module and a relay group, and may also include other actuators such as a motor and a solenoid valve, wherein:

[0071] The drive module is connected to the control module and is used to convert the first voltage regulation signal into a first drive signal, and / or convert the second voltage regulation signal into a second drive signal;

[0072] The relay group includes multiple independently controllable relays connected to the drive module, used to control the opening degree adjustment of the first voltage regulating element according to the first drive signal, and / or to control the opening degree adjustment of the second voltage regulating element according to the second drive signal, and / or to control the open / closed state of the shut-off valve.

[0073] For example Figure 6 The circuit schematic illustrates the connection relationship between the drive module and the relay group in a specific implementation scenario. Figure 6In this example, the drive module is illustrated using the ULN2003 driver chip, and the relay group is illustrated using relays K1 and K2. The actuator can drive relays K1 and K2 via the ULN2003 driver chip to control the inflation valve of the air chamber, thereby regulating the air chamber pressure. The input pins IN1-IN7 of the ULN2003 driver chip are directly connected to the output terminals of the microcontroller U1 to receive multiple signals. The output pins OUT1-OUT7 of the ULN2003 driver chip are connected one-to-one to the negative terminals of the coils of each relay, allowing control of multiple relays. The positive terminals of the relay coils are connected to a 5V power supply, and the normally open contacts of the relays are connected to one end of the valve in the air supply pipeline. When the microcontroller outputs a valid control signal, the relay coil is energized, the normally open contacts close, and the valve is connected to the circuit, realizing the inflation function.

[0074] In one possible implementation, such as Figure 4 and Figure 5 As shown, the control unit also includes a display, which is communicatively connected to the control module.

[0075] by Figure 5 For example, the monitor U2 uses an LCD12864 liquid crystal display module containing Chinese character libraries. This liquid crystal display module can be directly connected to... Figure 6 The device is connected to a microcontroller and can be powered by a wide voltage range of 3.0 to 5.5V. It contains 8192 Chinese characters and features cursor display, cursor shifting, cursor blinking, custom characters, and sleep mode. The display can also be a touchscreen with human-machine interface capabilities, allowing users to set device operating parameters, such as the preset pressure value of the air chamber, via the touchscreen.

[0076] Combination Figures 4-5 The schematic diagram of the control unit shown is now presented in the following way. Figure 6 This demonstrates the control flow of the device in a specific implementation scenario.

[0077] refer to Figure 6The flowchart illustrates that after the gas pipeline is connected to the gas chamber, the pressure sensor (third pressure detection unit) collects the gas pressure parameters inside the gas chamber in real time. The analog-to-digital converter module within the control unit converts the analog signal into a digital signal, which is then transmitted to the microcontroller U1. The microcontroller U1 inputs the real-time gas pressure value into the software for calculation and displays the current gas pressure data of the gas chamber on the operating interface. The operator inputs a preset target gas pressure value through the software interface and sends it to the microcontroller U1. The microcontroller U1 then compares the current measured gas pressure value with the input target gas pressure value: if the two values ​​are consistent or the deviation is within the allowable range, it indicates that the gas chamber pressure meets the requirements. At this time, the microcontroller does not send a pressure adjustment command, and the shut-off valve, pressure reducing valve, and regulating valve remain closed. If the preset gas pressure value is higher than the current measured pressure value of the gas chamber, it indicates that the gas chamber needs to be inflated. The microcontroller U1 transmits the target pressure parameter to the solenoid valve control module, triggering the gas circuit to open and starting the inflation operation. At this time, the shut-off valve, pressure reducing valve, and regulating valve are open.

[0078] During inflation, pressure can also be monitored through the first pressure detection unit and the second pressure detection unit. Figure 1 The pressure values ​​at the front and rear ends of the pressure reducing valve are adjusted to regulate the opening of the pressure reducing valve, preventing the large pressure of the gas source from impacting the pipeline and the gas chamber, and ensuring the reliability and safety of the gas transmission pipeline.

[0079] During inflation, the pressure sensor (third pressure detection unit) continuously monitors the pressure change in the air chamber. When the measured pressure value of the air chamber is found to be completely consistent with the preset pressure value or within the allowable deviation range, the microcontroller U1 immediately sends a command to close all valves and end the inflation process.

[0080] The high-precision gas path control and monitoring integrated device provided by this utility model has the following advantages:

[0081] 1. Outstanding High-Precision Control Capabilities: By installing multi-stage pressure detection units and pressure regulating elements in the gas supply pipeline of the power supply chamber, and by acquiring pressure signals in real time through high-precision pressure sensors and pressure transmitters, the control unit outputs pressure regulating signals according to different pressure differences, achieving precise control of the pressure at different stages of the pipeline. Combined with PID control algorithms and closed-loop regulation of servo regulating valves, along with the high-speed processing of the STC12C5A60S2 microcontroller, precise control of gas pressure is achieved, effectively improving the accuracy and stability of gas path control, ensuring pressure deviation is controlled within an extremely low range, enhancing the flexibility and reliability of system pressure regulation, and meeting the stringent requirements for gas path accuracy in scenarios such as high-power pulse power supplies.

[0082] 2. Significantly improved safety and reliability: Multiple protection mechanisms ensure stable system operation, including a shut-off valve at the gas source inlet to prevent gas leakage, and auxiliary functional units of the control module (such as protection units) that automatically cut off the power supply and alarm when there is abnormal pressure, gas leakage, or substandard purity; the output end of the gas pipeline can be connected to the gas chamber of the power supply through a flange connection, which facilitates fault handling and maintenance, and the design of multiple independent gas paths achieves fault isolation and reduces the overall failure risk.

[0083] 3. Strong environmental adaptability: In terms of structure, thermal design, three-proof design (moisture-proof, dust-proof, and corrosion-proof) and shielding measures can be preferred to effectively resist the influence of harsh environments and ensure that the system can still work stably under complex conditions such as high temperature, humidity, and dust, thus expanding the application scenarios.

[0084] 4. Significant advantages in generalization and serialization: Adopting standardized hardware interfaces (such as the connection between microcontroller and display, driver chip) and modular design, it is easy to replace components, upgrade the system and adapt to multiple scenarios, reducing maintenance costs and upgrade difficulty.

[0085] 5. Guaranteed self-reliance and controllability: Core components (such as the STC12C5A60S2 microcontroller) are domestically produced, avoiding dependence on foreign products, ensuring the system's self-reliance and controllability in the supply chain and technology, and improving the security of long-term stable operation.

[0086] 6. High efficiency with coordinated functions: The independent gas path design for different types of gases (sulfur hexafluoride and zero-level air) allows for independent gas supply to multiple key component gas chambers in the power supply through multiple independent gas pipelines. This ensures the efficient implementation of core insulation and arc extinguishing functions as well as auxiliary purging and pressure regulation functions. The two work together to meet the system's differentiated needs for different gases and improve overall operating efficiency.

[0087] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision gas path control and monitoring integrated device, characterized in that, The system includes a control unit and multiple gas delivery pipelines. Each gas delivery pipeline, along the gas delivery direction, is sequentially equipped with a first pressure detection unit, a first pressure regulating element, a second pressure detection unit, and a second pressure regulating element. The output end of each gas delivery pipeline is also equipped with a third pressure detection unit. The first pressure detection unit is used to monitor the first pressure value at the front end of the first pressure regulating element; The second pressure detection unit is used to monitor the second pressure value at the rear end of the first pressure regulating element; The third pressure detection unit is used to monitor the third pressure value of the gas chamber at the output end of the gas pipeline; The control unit is configured to output a first pressure regulating signal based on the difference between the first pressure value and the second pressure value, and to output a second pressure regulating signal based on the difference between the preset pressure value and the third pressure value. The first voltage regulating element is used to adjust the opening degree according to the first voltage regulating signal; The second voltage regulating element is used to adjust the opening degree according to the second voltage regulating signal.

2. The high-precision gas path control and monitoring integrated device according to claim 1, characterized in that, The gas pipeline is also equipped with a switching element at its input end.

3. The high-precision gas path control and monitoring integrated device according to claim 2, characterized in that, The switching element has a manual control component and an automatic control component.

4. The high-precision gas path control and monitoring integrated device according to any one of claims 1 to 3, characterized in that, The input ends of multiple gas pipelines are connected to a gas source to form a main gas path.

5. The high-precision gas path control and monitoring integrated device according to claim 4, characterized in that, The device is equipped with multiple main air passages, and the pipelines of the multiple main air passages are independent of each other and are respectively connected to the control unit.

6. The high-precision gas path control and monitoring integrated device according to claim 1, characterized in that, The control unit includes a control module and an actuator, wherein: The control module is used to output a first pressure regulating signal based on the difference between the first pressure value and the second pressure value, and to output a second pressure regulating signal based on the difference between the preset pressure value and the third pressure value. The actuator is used to control the opening degree of the first voltage regulating element according to the first voltage regulating signal, and to control the opening degree of the second voltage regulating element according to the second voltage regulating signal.

7. The high-precision gas path control and monitoring integrated device according to claim 6, characterized in that, The control unit also includes a display, which is communicatively connected to the control module.

8. The high-precision gas path control and monitoring integrated device according to claim 6 or 7, characterized in that, The actuator includes a drive module and a relay group, wherein: The drive module is connected to the control module and is used to convert the first voltage regulation signal into a first drive signal, and / or convert the second voltage regulation signal into a second drive signal; The relay group is connected to the drive module and is used to control the opening degree of the first voltage regulating element according to the first drive signal, and / or to control the opening degree of the second voltage regulating element according to the second drive signal.

9. The high-precision gas path control and monitoring integrated device according to claim 1, characterized in that, The first pressure regulating element is a pressure reducing valve.

10. The high-precision gas path control and monitoring integrated device according to claim 1, characterized in that, The second pressure regulating element is a servo regulating valve.

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