An electronic unit of a gas-liquid linkage valve

Abstract

The application discloses a kind of gas-liquid linkage valve electronic units, comprising: main processor and slave processor;Main processor is used for: when the gas-liquid linkage valve opens, the first current pressure value of target pipeline section is obtained, and when first current pressure value reaches preset pressure value range, first valve closing signal is generated and sent to the actuator for controlling the gas-liquid linkage valve corresponding to the target pipeline section;Slave processor is used for: when the gas-liquid linkage valve opens, the second current pressure value of target pipeline section is obtained, and when second pressure value reaches preset pressure value range, second valve closing signal is generated and sent to the actuator, so that when the actuator receives first valve closing signal and second valve closing signal simultaneously, the gas-liquid linkage valve is closed.The application controls gas-liquid linkage valve using double processors, enhances operation reliability and safety, reduces the risk of misoperation caused by single device failure.

Description

Technical Field

[0001] This invention relates to the field of pneumatic-hydraulic linkage valve technology, and more particularly to an electronic unit for a pneumatic-hydraulic linkage valve. Background Technology

[0002] Currently, long-distance natural gas pipelines widely use electronic units for gas-liquid linkage valves as intelligent control devices. When a natural gas pipeline ruptures, the actuator of the gas-liquid linkage valve is automatically driven to close the valve.

[0003] However, with over ten thousand gas-liquid linkage valves currently in use in my country's natural gas pipelines, erroneous shut-off accidents have occurred at various points along the pipelines during daily operation, impacting the safe operation of long-distance natural gas pipelines. A comprehensive analysis of on-site conditions and electronic unit data records reveals that this situation primarily arises because the electronic units of the gas-liquid linkage valves consist of a single CPU controller and a single pressure transmitter. A malfunction in any of these modules can lead to erroneous shut-off. This product structure has low reliability and a significant risk of malfunction. In other words, when the actuator should not operate, a failure in either the controller or the pressure transmitter can cause the actuator to activate, resulting in erroneous valve shut-off, which severely affects the normal operation of natural gas pipelines.

[0004] Therefore, there is an urgent need to provide a weight management technology solution to address the aforementioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an electronic unit for a gas-liquid linkage valve.

[0006] The technical solution of the electronic unit of the pneumatic-hydraulic linkage valve of the present invention is as follows:

[0007] Includes: main processor and slave processor;

[0008] The main processor is used to: when the gas-liquid linkage valve is opened, obtain the first current pressure value of the target pipeline segment, and when the first current pressure value reaches the preset pressure value range, generate a first valve closing signal and send it to the actuator for controlling the gas-liquid linkage valve corresponding to the target pipeline segment;

[0009] The slave processor is configured to: when the gas-liquid linkage valve is opened, acquire the second current pressure value of the target pipeline section, and when the second pressure value reaches the preset pressure value range, generate a second valve closing signal and send it to the actuator, so that when the actuator receives both the first valve closing signal and the second valve closing signal, it closes the gas-liquid linkage valve.

[0010] The beneficial effects of the pneumatic-hydraulic linkage valve electronic unit of the present invention are as follows:

[0011] This invention employs dual processors to control the pneumatic-hydraulic linkage valve, enhancing operational reliability and safety, and reducing the risk of misoperation due to a single device malfunction.

[0012] Based on the above solution, the electronic unit of the gas-liquid linkage valve of the present invention can be further improved as follows.

[0013] Furthermore, the main processor and the slave processor are connected via UART communication; the main processor is specifically used for:

[0014] When the gas-liquid linkage valve is opened, the second current pressure value is obtained, and it is determined whether the difference between the first current pressure value and the second current pressure value is greater than a preset pressure difference value, and the determination result is obtained.

[0015] When the judgment result is negative, the step of generating a first valve-closing signal and sending it to the actuator for controlling the gas-liquid linkage valve corresponding to the target pipeline section is executed when the first current pressure value reaches the preset pressure value range.

[0016] The main processor is also used for:

[0017] When the judgment result is yes, an alarm message indicating that the current pressure is abnormal is output.

[0018] Furthermore, it also includes: communication chips;

[0019] The main processor is specifically used to: output the alarm information to the target device through the communication chip.

[0020] Furthermore, it also includes: a display screen; the display screen is connected to the main processor, and the main processor is further used for:

[0021] The first current pressure value and the second current pressure value are sent to the display screen for display.

[0022] Furthermore, it also includes: a first sensor, a first acquisition chip, a main output module, a second sensor, a second acquisition chip, and a slave output module; the first sensor, the first acquisition chip, the main processor, and the main output module are connected in sequence, the second sensor, the second acquisition chip, the slave processor, and the slave output module are connected in sequence, and the main output module and the slave output module are connected in series and then connected to the actuator;

[0023] The main processor is specifically used to: receive the first current pressure value collected by the first sensor controlled by the first acquisition chip, and when the first current pressure value reaches the preset pressure value range, generate the first valve closing signal and send it to the actuator through the main output module;

[0024] The slave processor is specifically used to: receive the second current pressure value collected by the second sensor controlled by the second acquisition chip, and when the second current pressure value reaches the preset pressure value range, generate the second valve closing signal and send it to the actuator through the slave output module.

[0025] Furthermore, it also includes: a power conversion module; the power conversion module is connected to the main processor and the slave processor respectively, and the power conversion module is used to supply power to the main processor and the slave processor.

[0026] Furthermore, it also includes: a first dual-channel double-pole double-throw switch; the first acquisition chip is connected to the first input channel or the first standard comparison point of the main processor through the first dual-channel double-pole double-throw switch;

[0027] When the first acquisition chip is connected to the first input channel, the main processor executes the step of receiving the first current pressure value of the target pipeline segment acquired by the first sensor controlled by the first acquisition chip;

[0028] When the first acquisition chip is connected to the first standard comparison point, the main processor is used to receive the standard comparison potential of the main processor from the first acquisition chip in order to determine the accuracy of the data acquisition.

[0029] Furthermore, it also includes: a second dual-channel double-pole double-throw switch; the second acquisition chip is connected to the second input channel of the slave processor or the second standard comparison point through the second dual-channel double-pole double-throw switch;

[0030] When the second acquisition chip is connected to the second input channel, the slave processor executes the step of receiving the second current pressure value of the target pipeline segment acquired by the second sensor controlled by the second acquisition chip;

[0031] When the second acquisition chip is connected to the second standard comparison point, the slave processor is used to receive the standard comparison potential of the slave processor from the second acquisition chip in order to determine the accuracy of the data acquisition.

[0032] Furthermore, it also includes: main memory and slave memory;

[0033] The main memory is used to store the data and operation log information received by the main processor, and the slave memory is used to store the data and operation log information received by the slave processor.

[0034] Furthermore, the communication chip is an RS232 or RS485 communication chip, and the display screen is an LED display screen. Attached Figure Description

[0035] Figure 1 A schematic diagram of an embodiment of an electronic unit for a gas-liquid linkage valve provided by the present invention is shown;

[0036] Figure 2 A schematic diagram of an embodiment of an electronic unit for a gas-liquid linkage valve provided by the present invention is shown;

[0037] Figure 3 The diagram shows the main output module and the slave output module in an embodiment of an electronic unit for a gas-liquid linkage valve provided by the present invention. Detailed Implementation

[0038] Figure 1 A schematic diagram of an embodiment of an electronic unit for a pneumatic-hydraulic linkage valve provided by the present invention is shown. Figure 1 As shown, it includes: a main processor 100 and a slave processor 200.

[0039] The main processor 100 is used to: when the gas-liquid linkage valve is opened, obtain the first current pressure value of the target pipeline segment, and when the first current pressure value reaches the preset pressure value range, generate a first valve closing signal and send it to the actuator 300 for controlling the gas-liquid linkage valve corresponding to the target pipeline segment.

[0040] The slave processor 200 is configured to: when the gas-liquid linkage valve is opened, acquire the second current pressure value of the target pipeline section, and when the second pressure value reaches the preset pressure value range, generate a second valve closing signal and send it to the actuator, so that when the actuator receives both the first valve closing signal and the second valve closing signal, it closes the gas-liquid linkage valve.

[0041] Specifically, ① the CPUs of the main processor 100 and slave processor 200 use STMicroelectronics' STM32F1 microcontroller with a Cortex-M3 core, 72MHz clock speed, 256k ROM, and 48k RAM. They employ the μC / OS-II embedded operating system, supporting multitasking. This is a portable, firmware-enabled, customizable, preemptive multitasking real-time kernel suitable for various microprocessors, microcontrollers, and digital processing chips. ② The target pipeline segment is a natural gas pipeline that requires control using a gas-liquid linkage valve. ③ The first current pressure value is the pressure value of the target pipeline segment at the current moment, obtained by the main processor 100. ④ The second current pressure value is the pressure value of the target pipeline segment at the current moment, obtained by the slave processor 200. ⑤ The preset pressure range is the preset pressure value used to close the gas-liquid linkage valve. ⑥ The first valve closing signal is the valve closing signal generated by the main processor 100. The second valve closing signal is the valve closing signal generated by the slave processor 200. ⑦ The gas-liquid linkage valve is typically installed on the target pipeline segment. The actuator 300 can be installed near the pneumatic-hydraulic linkage valve or in other locations, as long as it can control the pneumatic-hydraulic linkage valve. There are no restrictions on the specific location.

[0042] It should be noted that, in addition to the current pressure value, the main processor 100 and the slave processor 200 can also calculate the average pressure and average pressure drop over a certain period of time, and compare the calculated values ​​with the corresponding preset values ​​to determine whether to generate a valve closing signal.

[0043] Preferably, the main processor 100 and the slave processor 200 are connected via UART communication; the main processor 100 is specifically used for:

[0044] When the gas-liquid linkage valve is opened, the second current pressure value is obtained, and it is determined whether the difference between the first current pressure value and the second current pressure value is greater than a preset pressure difference value, and the determination result is obtained.

[0045] The preset pressure difference value is used to determine whether the pressure difference between two pressure values ​​of the same target pipeline segment collected (acquired) is normal.

[0046] Specifically, the main processor 100 communicates with the slave processor 200 in real time via UART communication to obtain the second current pressure value from the slave processor 200, and determines whether the difference between the first current pressure value and the second current pressure value is greater than a preset pressure difference value, thereby obtaining a judgment result.

[0047] When the judgment result is negative, the step of generating a first valve-closing signal and sending it to the actuator 300 for controlling the gas-liquid linkage valve corresponding to the target pipeline section is executed when the first current pressure value reaches the preset pressure value range.

[0048] It should be noted that when the gas-liquid linkage valve is closed, the main processor 100 and the slave processor 200 do not perform the above steps.

[0049] The main processor 100 is also used for:

[0050] When the judgment result is yes, an alarm message indicating that the current pressure is abnormal is output.

[0051] Specifically, when the difference between the first current pressure value and the second current pressure value is greater than the preset pressure difference value, it is determined that there is a fault or abnormality in the current pressure, and the corresponding alarm information is output.

[0052] Preferably, it also includes: communication chip 140;

[0053] The main processor 100 is specifically used to: output the alarm information to the target device through the communication chip 140.

[0054] Specifically: ① The communication chip 140 uses an RS232 or RS485 communication chip. The communication chip 140 is used to convert TTL level serial port signals to RS232 or RS485 level signals. ② The target device is any external terminal device, including but not limited to mobile phones, computers, etc. ③ The communication chip 140 communicates with the target device via STANDARD RTU, DANIEL ASCII, or DANIEL RTU communication protocols.

[0055] Preferably, it further includes: a display screen 150; the display screen 150 is connected to the main processor 100, and the main processor 100 is further configured to:

[0056] The first current pressure value and the second current pressure value are sent to the display screen 150 for display.

[0057] The display screen 150 is an LCD display screen used to display relevant information (such as current pressure value) output by the main processor 100. The display screen 150 can be configured as a Chinese display screen or an English display screen.

[0058] More preferably, such as Figure 2 As shown, it also includes: a first sensor 110, a first acquisition chip 120, a main output module 130, a second sensor 210, a second acquisition chip 220, and a slave output module 230.

[0059] Specifically, ① the first sensor 110, the first acquisition chip 120, the main processor 100, and the main output module 130 are connected in sequence; the second sensor 210, the second acquisition chip 220, the slave processor 200, and the slave output module 230 are connected in sequence; the main output module 130 and the slave output module 230 are connected in series and then connected to the actuator 300. ② Both the first sensor 110 and the second sensor 210 are pressure sensors, installed on the target pipeline section. ③ Both the first acquisition chip 120 and the second acquisition chip 220 are AI acquisition chips, model: ADS1256. ④ Both the main output module 130 and the slave output module 230 include relays, each consisting of two I / O ports controlling two relay output points connected in parallel, thereby effectively reducing the risk of non-operation due to a single output point failure. ⑤ As... Figure 3 As shown, the main output module 130 is used for digital output of the main processor 100, such as DO0 to DO1; the slave output module 230 is used for digital output of the slave processor 200, such as DO2 to DO3.

[0060] The main processor 100 is specifically used to: receive the first current pressure value collected by the first sensor 110 controlled by the first acquisition chip 120, and when the first current pressure value reaches the preset pressure value range, generate the first valve closing signal and send it to the actuator 300 through the main output module 130.

[0061] The slave processor 200 is specifically used to: receive the second current pressure value collected by the second sensor 210 controlled by the second acquisition chip 220, and when the second current pressure value reaches the preset pressure value range, generate the second valve closing signal and send it to the actuator 300 through the slave output module 230.

[0062] Preferably, it further includes: a power conversion module 160; the power conversion module 160 is connected to the main processor 100 and the slave processor 200 respectively, and the power conversion module 160 is used to supply power to the main processor 100 and the slave processor 200.

[0063] The power conversion module 160 converts the input 9-36V voltage into 5V, 3.3V, 12V, and 24V. The 3.3V and 5V are used by the main processor 100 and the slave processor 200. Furthermore, the 3.3V and 5V can also be used by peripheral chips, while the 12V and 24V can be used as power supplies to drive the external actuator 300.

[0064] Preferably, it also includes: a first dual-channel double-pole double-throw switch 170; the first acquisition chip 120 is connected to the first input channel or the first standard comparison point of the main processor 100 through the first dual-channel double-pole double-throw switch 170.

[0065] When the first acquisition chip 120 is connected to the first input channel, the main processor 100 executes the step of receiving the first current pressure value of the target pipeline segment acquired by the first sensor 110 controlled by the first acquisition chip 120.

[0066] When the first acquisition chip 120 is connected to the first standard comparison point, the main processor 100 is used to receive the standard comparison potential of the main processor 100 acquired by the first acquisition chip 120 to determine the accuracy of the data acquisition.

[0067] Preferably, it also includes: a second dual-channel double-pole double-throw switch 240; the second acquisition chip 220 is connected to the second input channel or the second standard comparison point of the slave processor 200 through the second dual-channel double-pole double-throw switch 240.

[0068] When the second acquisition chip 220 is connected to the second input channel, the slave processor 200 executes the step of receiving the second current pressure value of the target pipeline segment acquired by the second sensor 210 controlled by the second acquisition chip 220.

[0069] When the second acquisition chip 220 is connected to the second standard comparison point, the slave processor 200 is used to receive the standard comparison potential of the slave processor 200 acquired by the second acquisition chip 220 in order to determine the accuracy of the data acquisition.

[0070] Among them, the first dual-channel double-pole double-throw switch 170 and the second dual-channel double-pole double-throw switch 240 both adopt the model: ADG888 dual-channel double-pole double-throw switch.

[0071] Specifically, when the first acquisition chip 120 is connected to the first input channel (the AI ​​input channel of the main processor 100), the main processor 100 executes the step of receiving the first current pressure value of the target pipeline segment acquired by the first sensor 110 controlled by the first acquisition chip 120. When the first acquisition chip 120 is connected to the first standard comparison point (2.5V), the accuracy of the data acquisition by the AI ​​input channel is determined by acquiring the standard comparison potential, thereby achieving the purpose of AI self-testing.

[0072] When the second acquisition chip 220 is connected to the second input channel (the AI ​​input channel of the processor 200), the processor 200 executes the step of receiving the second current pressure value of the target pipeline segment acquired by the second sensor 210 controlled by the second acquisition chip 220. When the second acquisition chip 220 is connected to the second standard comparison point (2.5V), the accuracy of the data acquisition by the AI ​​input channel is determined by acquiring the standard comparison potential, thus achieving the purpose of AI self-testing.

[0073] Preferably, it also includes: a main memory 180 and a slave memory 150;

[0074] The main memory 100 is used to store the data and operation record information received by the main processor 100, and the slave memory 200 is used to store the data and operation record information received by the slave processor 200.

[0075] The technical solution of this embodiment adopts a combination design of dual sensors, dual processors, and dual output modules to control the gas-liquid linkage valve. While realizing data sharing between the two processors, it enhances operational reliability and safety and reduces the risk of misoperation caused by the failure of a single device.

[0076] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. Similarly, for the sake of brevity and to aid in understanding one or more aspects of the invention, in the description of exemplary embodiments of the invention above, various features of the embodiments are sometimes grouped together in a single embodiment, figure, or description thereof. The claims, which follow the detailed description, are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0077] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. An electronic unit for a pneumatic-hydraulic linkage valve, characterized in that, include: Master processor and slave processor; The main processor is used to: when the gas-liquid linkage valve is opened, obtain the first current pressure value of the target pipeline segment, and when the first current pressure value reaches the preset pressure value range, generate a first valve closing signal and send it to the actuator for controlling the gas-liquid linkage valve corresponding to the target pipeline segment; The slave processor is configured to: when the gas-liquid linkage valve is opened, acquire the second current pressure value of the target pipeline section, and when the second current pressure value reaches the preset pressure value range, generate a second valve closing signal and send it to the actuator, so that when the actuator receives both the first valve closing signal and the second valve closing signal, it closes the gas-liquid linkage valve. It also includes: a first sensor, a first acquisition chip, a main output module, a second sensor, a second acquisition chip, and a slave output module; the first sensor, the first acquisition chip, the main processor, and the main output module are connected in sequence, the second sensor, the second acquisition chip, the slave processor, and the slave output module are connected in sequence, and the main output module and the slave output module are connected in series and then connected to the actuator; The main processor is specifically used to: receive the first current pressure value collected by the first sensor controlled by the first acquisition chip, and when the first current pressure value reaches the preset pressure value range, generate the first valve closing signal and send it to the actuator through the main output module; The slave processor is specifically used to: receive the second current pressure value collected by the second sensor controlled by the second acquisition chip, and when the second current pressure value reaches the preset pressure value range, generate the second valve closing signal and send it to the actuator through the slave output module; It also includes: a first dual-channel double-pole double-throw switch; the first acquisition chip is connected to the first input channel or the first standard comparison point of the main processor through the first dual-channel double-pole double-throw switch; When the first acquisition chip is connected to the first input channel, the main processor executes the step of receiving the first current pressure value of the target pipeline segment acquired by the first sensor controlled by the first acquisition chip; When the first acquisition chip is connected to the first standard comparison point, the main processor is used to receive the standard comparison potential of the main processor from the first acquisition chip to determine the accuracy of the data acquisition. It also includes: a second dual-channel double-pole double-throw switch; the second acquisition chip is connected to the second input channel or the second standard comparison point of the slave processor through the second dual-channel double-pole double-throw switch; When the second acquisition chip is connected to the second input channel, the slave processor executes the step of receiving the second current pressure value of the target pipeline segment acquired by the second sensor controlled by the second acquisition chip; When the second acquisition chip is connected to the second standard comparison point, the slave processor is used to receive the standard comparison potential of the slave processor from the second acquisition chip in order to determine the accuracy of the data acquisition.

2. The pneumatic-hydraulic linkage valve electronic unit according to claim 1, characterized in that, The main processor and the slave processor are connected via UART communication; the main processor is specifically used for: When the gas-liquid linkage valve is opened, the second current pressure value is obtained, and it is determined whether the difference between the first current pressure value and the second current pressure value is greater than a preset pressure difference value, and the determination result is obtained. When the judgment result is negative, the step of generating a first valve-closing signal and sending it to the actuator for controlling the gas-liquid linkage valve corresponding to the target pipeline section is executed when the first current pressure value reaches the preset pressure value range. The main processor is also used for: When the judgment result is yes, an alarm message indicating that the current pressure is abnormal is output.

3. The pneumatic-hydraulic linkage valve electronic unit according to claim 2, characterized in that, Also includes: Communication chips; The main processor is specifically used to: output the alarm information to the target device through the communication chip.

4. The pneumatic-hydraulic linkage valve electronic unit according to claim 3, characterized in that, Also includes: The display screen is connected to the main processor, and the main processor is further configured to: The first current pressure value and the second current pressure value are sent to the display screen for display.

5. The pneumatic-hydraulic linkage valve electronic unit according to claim 1, characterized in that, Also includes: Power conversion module; The power conversion module is connected to the main processor and the slave processor respectively, and the power conversion module is used to supply power to the main processor and the slave processor.

6. The electronic unit for the gas-liquid linkage valve according to claim 1, characterized in that, Also includes: Main memory and slave memory; The main memory is used to store the data and operation log information received by the main processor, and the slave memory is used to store the data and operation log information received by the slave processor.

7. The pneumatic-hydraulic linkage valve electronic unit according to claim 4, characterized in that, The communication chip is an RS232 or RS485 communication chip, and the display screen is an LED display screen.

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