Automatic pressure regulating device of fuel gas pressure regulating box

Abstract

The invention discloses an automatic pressure regulating device for a fuel gas pressure regulating box, and particularly relates to the technical field of fuel gas equipment.The automatic pressure regulating device comprises an upstream gas inlet pipeline, a first ball valve, an electric valve, a filter, an integrated pressure regulator, a flow meter, a downstream gas outlet pipeline, an anti-explosion controller, a solar cell panel and a grounding device which are sequentially connected; the downstream gas outlet pipeline is used for conveying the treated fuel gas to the downstream, the first ball valve is used for manually controlling on-off of the fuel gas, the electric valve is used for adjusting the flow of the fuel gas according to a control signal, and the filter is used for filtering impurities in the fuel gas; the automatic pressure regulating device of the fuel gas pressure regulating box has the remarkable advantages in multiple aspects, pressure can be accurately and stably regulated through an integrated pressure regulator and a self-adaptive flow regulation program on the aspects of pressure regulation and filtering, and the automatic pressure regulating device can pre-judge pressure changes of peak and valley gas consumption in advance according to real-time and historical data, dynamically adjust the opening degree of an electric valve and ensure that the output pressure is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of gas equipment, and more specifically, to an automatic pressure regulating device for a gas pressure regulating box. Background Art

[0002] With the acceleration of urbanization and the continuous growth of energy demand, gas as a clean energy has been widely used in industrial production, commercial operations and residents' lives. As a key equipment in the gas transmission and distribution system, the gas pressure regulating box has the main function of regulating the upstream high pressure gas to a stable pressure suitable for downstream users to ensure the safe and efficient supply of gas.

[0003] Traditional gas pressure regulating boxes have provided basic guarantees for gas supply for a long time in the past. However, with the development of science and technology and the increasing requirements of society for safety and reliability, their shortcomings have gradually become apparent. However, traditional gas pressure regulating boxes have many disadvantages. Their pressure regulation methods are often relatively extensive, and it is difficult to accurately adapt to changes in gas demand in different time periods and scenarios. During the peak gas consumption in the morning and evening, the gas pressure is often insufficient due to the inability to adjust the pressure and flow in time, affecting the normal operation of the equipment; and during the low period at night, the pressure may be too high, resulting in energy waste and even safety hazards.

[0004] In addition, the filtering function of traditional pressure regulating boxes is limited and cannot effectively remove fine impurities and harmful gases in the gas. After long-term use, these impurities will accumulate in pipelines and equipment, aggravating equipment wear, reducing equipment service life, and increasing maintenance costs. At the same time, traditional pressure regulating boxes are also lagging behind in safety monitoring and remote management. Once a gas leak or illegal intrusion occurs, it is difficult to detect and deal with it in time. The operation and maintenance personnel are also unable to understand the operating status of the pressure regulating box in real time, making it difficult to perform equipment maintenance and troubleshooting in advance. For this reason, we propose an automatic pressure regulating device for a gas pressure regulating box. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an automatic pressure regulating device for a gas pressure regulating box. The automatic pressure regulating device for a gas pressure regulating box has many significant advantages. At the pressure regulation and filtration level, it can accurately and stably regulate the pressure through an integrated pressure regulator and an adaptive flow adjustment program. It can predict the pressure changes during peak and trough gas consumption in advance based on real-time and historical data, and dynamically adjust the opening of the electric valve to ensure stable output pressure and meet the needs of various users. At the same time, the multi-layer structure of the filter, from coarse filtration to fine filtration to activated carbon adsorption, can effectively remove impurities and harmful gases, improve gas quality, reduce the risk of downstream equipment failure, and extend the service life of equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic pressure regulating device for a gas pressure regulating box, comprising an upstream air inlet pipeline, a first ball valve, an electric valve, a filter, an integrated pressure regulator, a flow meter, a downstream air outlet pipeline, an explosion-proof controller, a solar panel and a grounding device connected in sequence, the upstream air inlet pipeline is used to receive upstream gas, the downstream air outlet pipeline is used to transport the treated gas to the downstream, the first ball valve is used to manually control the on-off of the gas, the electric valve is used to adjust the gas flow according to a control signal, the filter is used to filter impurities in the gas, the integrated pressure regulator is used to adjust the gas pressure, and the flow meter is used to measure the gas flow;

[0007] The explosion-proof controller is electrically connected to the electric valve, and is used to receive the pressure sensor signal and control the opening of the electric valve according to a preset algorithm; the pressure sensor array is arranged at the inlet end of the electric valve and the outlet end of the integrated pressure regulator;

[0008] The pressure indicator is arranged between the filter and the integrated voltage regulator; the solar panel is electrically connected to the explosion-proof controller; and the grounding device is connected to the downstream air outlet pipe for grounding the device.

[0009] In a preferred embodiment, the explosion-proof controller further includes a storage module, in which an adaptive flow regulation program based on historical gas consumption data and real-time pressure data is stored. The adaptive flow regulation program can automatically adjust the opening of the electric valve according to the changing law of gas consumption load in different time periods. The adaptive flow regulation program adopts the following method: assuming that the current time is t, and the real-time inlet pressure collected by the pressure sensor at the inlet end of the electric valve is P in (t), the real-time outlet pressure collected by the integrated pressure regulator outlet pressure sensor is P out (t), the gas load prediction model obtained by analyzing and processing the historical gas consumption data is Q(t), and the opening adjustment coefficient of the electric valve is K(t), then:

[0010] Among them, K0 is the initial opening setting value, which is 0.5, P set The preset outlet pressure target value is 2.5 kPa, P avgis the average value of the inlet pressure in the past 60 minutes, λ is the attenuation factor, which is taken as 0.05. The calculation module of the explosion-proof controller calculates Kt according to the above algorithm, and controls the opening of the electric valve accordingly to achieve precise regulation of the gas flow rate. In addition, during the peak gas consumption in the morning and evening, i.e. 7:00-9:00 in the morning and 18:00-20:00 in the evening, and the trough period at night, i.e. 0:00-5:00 in the morning, the pressure fluctuation trend is predicted in advance through the gas load prediction model, the pressure regulation process is dynamically optimized, the impact of pressure fluctuations on downstream equipment is reduced, and the stability of gas supply and energy utilization efficiency are improved.

[0011] In a preferred embodiment, the filter includes a multi-layer filtration structure, which is a coarse filter layer, a fine filter layer and an activated carbon adsorption layer in sequence. The coarse filter layer is made of metal fiber sintered felt with a porosity of 30% and a pore size distribution of 50-100 μm, which is used to remove particulate impurities with a particle size greater than 50 μm in the fuel gas, and the filtration efficiency reaches more than 95%; the fine filter layer uses a polymer nanofiber membrane with a membrane pore size of 50-100 nm, which can further filter fine particulate impurities with a particle size between 50 nm and 50 μm, and the filtration accuracy is as high as 99%; the activated carbon adsorption layer uses coconut shell activated carbon with a high specific surface area, and its specific surface area is greater than 1000 m 2 / g, micropore volume greater than 0.5cm 3 / g, used to absorb harmful gases and odors in fuel gas to improve fuel gas quality, and each layer is connected by a clamp structure with sealing performance, and the tightening torque of the clamp is 20N·m.

[0012] In a preferred embodiment, the integrated pressure regulator is internally provided with a pressure regulating element and a microprocessor control unit, the pressure regulating element comprises a high-precision pressure regulating valve and a pressure sensor combination, the valve core of the pressure regulating valve is made of special ceramic material, and has the characteristics of wear resistance, corrosion resistance, and high-precision regulation, and its regulation accuracy is 0.1kPa, the accuracy of the pressure sensor is ±0.2% FS, and the response time is less than 30ms, which can quickly respond to the control instructions of the microprocessor control unit to achieve accurate regulation of the gas pressure, the microprocessor control unit is connected to the explosion-proof controller by communication, adopts a high-speed communication bus, and the communication rate reaches 500kbps, receives the control signal of the explosion-proof controller and feeds back the working status information of the pressure regulator, and the microprocessor control unit runs a pressure regulation algorithm based on the combination of fuzzy control and PID control, which is as follows: the set pressure is P r ef, actual pressure is P a ctual, error e = P r ef-P actual , error change rate Output control quantity u, then Where Kp , K i , K d They are proportional coefficient, integral coefficient and differential coefficient respectively, which are dynamically adjusted according to the real-time pressure changes through the online self-tuning algorithm to achieve fast and stable pressure regulation, so that the outlet pressure is stable at P ref Within the range of ±0.2kPa.

[0013] In a preferred embodiment, a safety monitoring element is included, which includes a combustible gas leakage sensor and a door switch sensor. The combustible gas leakage sensor is arranged at the connection between the pressure regulating box pipeline and the valve seal, and adopts a semiconductor gas sensor. The detection sensitivity of methane reaches 5ppm, and the response time is less than 3s. When the gas leakage concentration is detected to reach a preset threshold of 20ppm, an alarm signal is sent to the explosion-proof controller, the electric valve is closed within 3 seconds, and an alarm is issued. The sound intensity I of the sound and light alarm prompt and the gas leakage concentration C satisfy the following relationship: I=80+2×C-20, where the unit of I is dB, and the light signal adopts a red warning light with a flashing frequency of 2Hz; the door switch sensor is arranged on the door of the device, and adopts a reed switch sensor. When the door is opened in an unauthorized way and during abnormal working hours, an alarm signal is sent to the explosion-proof controller, and the explosion-proof controller issues an sound and light alarm prompt after receiving the alarm signal.

[0014] In a preferred embodiment, a charging controller and a battery are connected between the solar panel and the explosion-proof controller. The charging controller adopts maximum power point tracking technology, and the tracking efficiency is improved by 95%. The working point of the solar panel is adjusted in real time so that it always works in the maximum power output state, thereby improving the utilization efficiency of solar energy. The battery adopts a lithium-ion battery with a capacity of 100Ah and a cycle life of more than 2000 times. It has overcharge, over-discharge and short-circuit protection functions, and supplies power to the explosion-proof controller when solar energy is insufficient and the city power is cut off. When the battery power is less than 20%, a low power alarm message is sent to the remote monitoring center through the remote communication module to ensure the continuous operation of the device.

[0015] In a preferred embodiment, a remote communication module is included, which is connected to the explosion-proof controller and uses 5G communication technology to interact with the remote monitoring center. The communication rate reaches 100Mbps, and the pressure and flow operation data are transmitted. The transmission interval is related to the gas flow. The operation and maintenance personnel remotely operate the device, view the status and receive alarm information through the remote monitoring center software platform. The platform can analyze historical data to generate pressure fluctuation curves, flow change curves and equipment failure statistical reports to provide support for gas management and equipment maintenance. Among them, the data transmission interval Δt and the gas flow Q meet the following conditions: Δt = 5-0.01×Q, when Q≤500m 3 / h; the fitting function of the pressure fluctuation curve P(t) is P(t) = P0 + a × sinωt + φ + b × t + c; the fitting function of the flow change curve Q(t) is Q(t) = Q0 + d × e -kt +f×t 2 +g×t+h.

[0016] The technical effects and advantages of the present invention: The automatic pressure regulating device of the gas pressure regulating box has many significant advantages. At the pressure regulation and filtration level, it can accurately and stably regulate the pressure through an integrated pressure regulator and an adaptive flow adjustment program. It can predict the pressure changes during peak and trough gas consumption in advance based on real-time and historical data, and dynamically adjust the opening of the electric valve to ensure stable output pressure and meet the needs of various users. At the same time, the multi-layer structure of the filter, from coarse filtration to fine filtration to activated carbon adsorption, can effectively remove impurities and harmful gases, improve gas quality, reduce the risk of downstream equipment failure, and extend the service life of equipment.

[0017] In terms of safety and management, combustible gas leak sensors and access switch sensors can detect leaks and illegal intrusions in a timely manner, quickly alarm and close the electric valve to ensure the safety of personnel and property. Moreover, the device uses 5G remote communication modules and software platforms to achieve remote monitoring and operation. Operation and maintenance personnel can grasp operating data in real time, adjust parameters remotely, and use data analysis to plan maintenance in advance, improve management efficiency, and reduce operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the working process of the automatic pressure regulating device for the gas pressure regulating box of the present invention;

[0019] Figure 2 This is a schematic diagram of equipment control of the automatic pressure regulating device of the gas pressure regulating box of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Refer to the instruction manual Figure 1-2, an automatic pressure regulating device for a gas pressure regulating box, comprising an upstream air inlet pipeline, a first ball valve, an electric valve, a filter, an integrated pressure regulator, a flow meter, a downstream air outlet pipeline, an explosion-proof controller, a solar panel and a grounding device connected in sequence, the upstream air inlet pipeline is used to receive upstream gas, the downstream air outlet pipeline is used to transport the treated gas to the downstream, the first ball valve is used to manually control the on-off of the gas, the electric valve is used to adjust the gas flow according to the control signal, the filter is used to filter impurities in the gas, the integrated pressure regulator is used to adjust the gas pressure, and the flow meter is used to measure the gas flow;

[0022] The explosion-proof controller is electrically connected to the electric valve, and is used to receive the pressure sensor signal and control the opening of the electric valve according to a preset algorithm; the pressure sensor array is arranged at the inlet end of the electric valve and the outlet end of the integrated pressure regulator;

[0023] The pressure indicator is arranged between the filter and the integrated voltage regulator; the solar panel is electrically connected to the explosion-proof controller; and the grounding device is connected to the downstream air outlet pipe for grounding the device.

[0024] The explosion-proof controller also includes a storage module, in which an adaptive flow regulation program based on historical gas consumption data and real-time pressure data is stored. The adaptive flow regulation program can automatically adjust the opening of the electric valve according to the changing law of gas consumption load in different time periods. The adaptive flow regulation program adopts the following method: assuming that the current time is t, and the real-time inlet pressure collected by the pressure sensor at the inlet end of the electric valve is P in (t), the real-time outlet pressure collected by the integrated pressure regulator outlet pressure sensor is P out (t), the gas load prediction model obtained by analyzing and processing the historical gas consumption data is Q(t), and the opening adjustment coefficient of the electric valve is K(t), then: Among them, K0 is the initial opening setting value, which is 0.5, P set The preset outlet pressure target value is 2.5 kPa, P avgis the average value of the inlet pressure in the past 60 minutes, λ is the attenuation factor, which is taken as 0.05. The calculation module of the explosion-proof controller calculates Kt according to the above algorithm, and controls the opening of the electric valve accordingly to achieve precise regulation of the gas flow rate. In the morning and evening gas consumption peaks, i.e. 7:00-9:00 in the morning and 18:00-20:00 in the evening, and the night trough period, i.e. 0:00-5:00 in the morning, the gas load prediction model is used to predict the pressure fluctuation trend in advance, dynamically optimize the pressure regulation process, reduce the impact of pressure fluctuations on downstream equipment, and improve the stability of gas supply and energy utilization efficiency; the automatic pressure regulating device of the gas pressure regulating box is composed of multiple key components connected in order through pipelines; the upstream air intake pipeline is responsible for introducing gas to provide gas source for subsequent processes. The first ball valve can manually control the on and off of the gas to ensure safety during equipment maintenance and emergencies;

[0025] The electric valve is connected to the explosion-proof controller and accurately adjusts the gas flow according to the controller signal; it can quickly respond to changes in demand and ensure a stable flow supply. The filter adopts a multi-layer design. The coarse filter layer uses metal fiber sintered felt to intercept particulate impurities; the fine filter layer uses a polymer nanofiber membrane to further filter tiny impurities; the activated carbon adsorption layer adsorbs harmful gases and odors to improve the quality of gas. The layers are tightly connected by specific clamps to ensure sealing; the integrated pressure regulator is the core component, and the internal pressure regulating element works in conjunction with the microprocessor control unit. The valve core of the pressure regulating valve is made of special ceramic materials, which are wear-resistant and corrosion-resistant and have high adjustment accuracy. The matching pressure sensor can quickly sense pressure changes and feedback to the microprocessor. The microprocessor communicates with the explosion-proof controller at high speed, receives instructions and feedbacks the working status of the pressure regulator; the flow meter measures the gas flow in real time, provides key data for system operation, integrates sensor data, and controls each component according to preset rules. The pressure sensors are distributed at the inlet end of the electric valve and the outlet end of the integrated pressure regulator to monitor pressure changes. The pressure indicator directly displays the gas pressure, which is convenient for operators to monitor. The solar panel converts solar energy into electricity when it is illuminated to power the device. The grounding device is connected to the downstream gas outlet pipeline to ensure electrical safety. The adaptive flow regulation program in the explosion-proof controller works based on historical gas consumption data and real-time pressure data. It collects pressure data at the inlet of the electric valve and the outlet of the integrated pressure regulator in real time, and predicts gas load at different time periods based on historical data.

[0026] The adjustment amount of the electric valve opening is calculated by comprehensively considering the change of inlet pressure, the deviation between the outlet pressure and the target value, and the gas load forecast factors. During the special periods of peak gas consumption in the morning and evening and low gas consumption at night, the program can predict the pressure fluctuation in advance, adjust the electric valve opening in advance, optimize the pressure regulation process, and ensure stable and efficient gas supply.

[0027] The filter comprises a multi-layer filtering structure, which is a coarse filter layer, a fine filter layer and an activated carbon adsorption layer in sequence. The coarse filter layer is made of metal fiber sintered felt with a porosity of 30% and a pore size distribution of 50-100 μm, which is used to remove particle impurities with a particle size greater than 50 μm in the fuel gas, and the filtration efficiency reaches more than 95%; the fine filter layer is made of a polymer nanofiber membrane with a membrane pore size of 50-100 nm, which can further filter fine particle impurities with a particle size between 50 nm and 50 μm, and the filtration accuracy is as high as 99%; the activated carbon adsorption layer is made of coconut shell activated carbon with a high specific surface area, and the specific surface area is greater than 1000 m 2 / g, micropore volume greater than 0.5cm 3 / g, used to absorb harmful gases and odors in fuel gas to improve fuel gas quality, and each layer is connected by a clamp structure with sealing performance, and the clamp's tightening torque is 20N·m; the metal fiber sintered felt of the coarse filter layer of the filter has a reasonable porosity and pore size design, which can effectively intercept particulate impurities. The polymer nanofiber membrane of the fine filter layer further filters tiny impurities with its extremely small membrane pore size. The coconut shell activated carbon of the activated carbon adsorption layer has a large specific surface area and considerable micropore volume, which can absorb harmful gases and odors. Each layer is connected by a clamp with a specific tightening torque to ensure sealing and efficient filtration.

[0028] The integrated pressure regulator is internally provided with a pressure regulating element and a microprocessor control unit, the pressure regulating element comprises a high-precision pressure regulating valve and a pressure sensor combination, the valve core of the pressure regulating valve is made of special ceramic material, and has the characteristics of wear resistance, corrosion resistance and high-precision regulation, and its regulation accuracy is 0.1kPa, the accuracy of the pressure sensor is ±0.2%FS, and the response time is less than 30ms, which can quickly respond to the control instructions of the microprocessor control unit to achieve accurate regulation of the gas pressure, the microprocessor control unit is connected to the explosion-proof controller by communication, adopts a high-speed communication bus, and the communication rate reaches 500kbps, receives the control signal of the explosion-proof controller and feeds back the working status information of the pressure regulator, and the feedback information includes the current pressure value, working mode, and fault code, and the microprocessor control unit runs a pressure regulation algorithm based on the combination of fuzzy control and PID control, which is as follows: the set pressure is P r ef, actual pressure is P a ctual, error e = P r ef-P actual , error change rate Output control quantity u, then, Where K p , K i , K dThey are proportional coefficient, integral coefficient and differential coefficient respectively, which are dynamically adjusted according to the real-time pressure changes through the online self-tuning algorithm to achieve fast and stable pressure regulation, so that the outlet pressure is stable at P ref Within ±0.2kPa;

[0029] The combustible gas leak sensor is installed at the leak-prone location. It uses semiconductor technology and is sensitive to methane detection and responds quickly. When the leak concentration reaches the preset value, a signal is sent to the explosion-proof controller. After receiving the signal, the controller quickly closes the electric valve and activates the sound and light alarm. The sound is loud and the light flashes at a specific frequency to warn of danger. The access switch sensor is installed on the door of the device. When the door is illegally opened, an alarm signal is sent to the controller, which then activates the sound and light alarm to indicate that there is a safety risk.

[0030] The safety monitoring element includes a combustible gas leakage sensor and a door switch sensor. The combustible gas leakage sensor is arranged at the connection of the pressure regulating box pipeline and the valve seal. It adopts a semiconductor gas sensor. The detection sensitivity of methane reaches 5ppm and the response time is less than 3s. When the gas leakage concentration reaches the preset threshold value of 20ppm, an alarm signal is sent to the explosion-proof controller. After receiving the alarm signal, the explosion-proof controller controls the electric valve to close within 3 seconds and sends an audible and visual alarm prompt. The sound intensity I of the audible and visual alarm prompt and the gas leakage concentration C meet the following relationship: I=80+2×C-20, where the unit of I is dB, and the light signal adopts a red warning light with a flashing frequency of 2Hz; the door switch sensor is arranged on the door of the device, and adopts a reed switch sensor. When the door is opened without authorization and during abnormal working hours, an alarm signal is sent to the explosion-proof controller. After receiving the alarm signal, the explosion-proof controller sends an audible and visual alarm prompt; the combustible gas leakage sensor is installed at a leak-prone place, adopts semiconductor technology, is sensitive to methane detection and responds quickly. When the leakage concentration reaches the preset value, a signal will be sent to the explosion-proof controller. After receiving the signal, the controller quickly closes the electric valve and activates the sound and light alarm. The sound is loud and the light flashes at a specific frequency to warn of danger;

[0031] The access switch sensor is installed on the door of the device. When the door is opened illegally, it will send an alarm signal to the controller, and the controller will then activate the sound and light alarm to indicate that there is a security risk.

[0032] A charging controller and a storage battery are connected between the solar panel and the explosion-proof controller. The charging controller adopts the maximum power point tracking technology, and the tracking efficiency is improved by 95%. The working point of the solar panel is adjusted in real time so that it always works in the maximum power output state, thereby improving the utilization efficiency of solar energy. The storage battery adopts a lithium-ion battery with a capacity of 100Ah and a cycle life of more than 2000 times. It has overcharge, over-discharge and short-circuit protection functions. It supplies power to the explosion-proof controller when solar energy is insufficient and the city power is cut off. When the battery power is less than 20%, a low power alarm message is sent to the remote monitoring center through the remote communication module to ensure the continuous operation of the device. The solar panel converts solar energy into electrical energy under light. The charging controller adopts advanced technology to track the optimal working state of the solar panel, improve the utilization efficiency of solar energy, and manage the storage and distribution of electrical energy. The storage battery adopts a lithium-ion battery with sufficient capacity, long cycle life and multiple protection functions. It supplies power to the device when solar energy is insufficient and the power is cut off, and sends an alarm message to the remote monitoring center when the power is low.

[0033] It includes a remote communication module, which is connected to the explosion-proof controller and uses 5G communication technology to interact with the remote monitoring center. The communication rate reaches 100Mbps, and the pressure and flow operation data are transmitted. The transmission interval is related to the gas flow. The operation and maintenance personnel remotely operate the device, check the status and receive alarm information through the remote monitoring center software platform. The platform can analyze historical data to generate pressure fluctuation curves, flow change curves and equipment failure statistical reports to provide support for gas management and equipment maintenance. Among them, the data transmission interval Δt and the gas flow Q meet the following conditions: when Q≤500m 3 / h, Δt=5-0.01×Q; the fitting function of the pressure fluctuation curve P(t) is P(t)=P0+a×sinωt+φ+b×t+c; the fitting function of the flow change curve Q(t) is Q(t)=Q0+d×e -kt +f×t 2 +g×t+h; the remote communication module uses 5G technology to communicate with the remote monitoring center at high speed to transmit device pressure, flow, and equipment status operation data. The transmission interval will be reasonably adjusted according to the gas flow.

[0034] Through the monitoring center software platform, operation and maintenance personnel can remotely view the operating status of the device, set parameters such as the opening of the electric valve and the target pressure value of the pressure regulator, and remotely control some operations. The software platform can analyze historical data, generate pressure and flow change curves and fault statistics reports, and provide decision-making basis for management and maintenance.

[0035] The above embodiments can be implemented in whole or in part by software, hardware, firmware and any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions and computer programs. When the computer instructions and computer programs are loaded and executed on a computer, the processes and functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, and other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server and data center to another website site, computer, server and data center by wired (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0036] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0037] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0038] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0039] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0040] If the functions are implemented in the form of software functional units and sold and used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0041] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes and substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. An automatic pressure regulating device for a gas pressure regulating box, characterized in that: The invention comprises an upstream air inlet pipeline, a first ball valve, an electric valve, a filter, an integrated pressure regulator, a flow meter, a downstream air outlet pipeline, an explosion-proof controller, a solar panel and a grounding device connected in sequence, wherein the upstream air inlet pipeline is used to receive the upstream gas, the downstream air outlet pipeline is used to transport the treated gas to the downstream, the first ball valve is used to manually control the on-off of the gas, the electric valve is used to adjust the gas flow according to the control signal, the filter is used to filter impurities in the gas, the integrated pressure regulator is used to adjust the gas pressure, and the flow meter is used to measure the gas flow; The explosion-proof controller is electrically connected to the electric valve, and is used to receive the pressure sensor signal and control the opening of the electric valve according to a preset algorithm; the pressure sensor array is arranged at the inlet end of the electric valve and the outlet end of the integrated pressure regulator; The pressure indicator is arranged between the filter and the integrated voltage regulator; the solar panel is electrically connected to the explosion-proof controller; and the grounding device is connected to the downstream air outlet pipe for grounding the device.

2. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: The explosion-proof controller also includes a storage module, in which an adaptive flow regulation program based on historical gas consumption data and real-time pressure data is stored. The adaptive flow regulation program can automatically adjust the opening of the electric valve according to the changing law of gas consumption load in different time periods. The adaptive flow regulation program adopts the following method: assuming that the current time is t, and the real-time inlet pressure collected by the pressure sensor at the inlet end of the electric valve is P in (t, the real-time outlet pressure collected by the integrated pressure regulator outlet pressure sensor is P out (t, the gas load prediction model obtained by analyzing and processing the historical gas consumption data is Q(t, the opening adjustment coefficient of the electric valve is K(t, then: Among them, K0 is the initial opening setting value, which is 0.5, P set The preset outlet pressure target value is 2.5 kPa, P avg is the average value of the inlet pressure in the past 60 minutes, λ is the attenuation factor, which is taken as 0.

05. The calculation module of the explosion-proof controller calculates Kt according to the above algorithm, and controls the opening of the electric valve accordingly to achieve precise regulation of the gas flow rate. In addition, during the peak gas consumption in the morning and evening, i.e. 7:00-9:00 in the morning and 18:00-20:00 in the evening, and the trough period at night, i.e. 0:00-5:00 in the morning, the pressure fluctuation trend is predicted in advance through the gas load prediction model, the pressure regulation process is dynamically optimized, the impact of pressure fluctuations on downstream equipment is reduced, and the stability of gas supply and energy utilization efficiency are improved.

3. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: The filter comprises a multi-layer filtering structure, which is a coarse filter layer, a fine filter layer and an activated carbon adsorption layer in sequence. The coarse filter layer is made of metal fiber sintered felt with a porosity of 30% and a pore size distribution of 50-100 μm, which is used to remove particle impurities with a particle size greater than 50 μm in the fuel gas, and the filtration efficiency reaches more than 95%; the fine filter layer is made of a polymer nanofiber membrane with a membrane pore size of 50-100 nm, which can further filter fine particle impurities with a particle size between 50 nm and 50 μm, and the filtration accuracy is as high as 99%; the activated carbon adsorption layer is made of coconut shell activated carbon with a high specific surface area, and the specific surface area is greater than 1000 m 2 / g, micropore volume greater than 0.5cm 3 / g, used to absorb harmful gases and odors in fuel gas to improve fuel gas quality, and each layer is connected by a clamp structure with sealing performance, and the tightening torque of the clamp is 20N·m.

4. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: The integrated pressure regulator is internally provided with a pressure regulating element and a microprocessor control unit, the pressure regulating element comprises a high-precision pressure regulating valve and a pressure sensor combination, the valve core of the pressure regulating valve is made of special ceramic material, and has the characteristics of wear resistance, corrosion resistance and high-precision regulation, and its regulation accuracy is 0.1kPa, the accuracy of the pressure sensor is ±0.2%FS, and the response time is less than 30ms, which can quickly respond to the control instructions of the microprocessor control unit to achieve accurate regulation of the gas pressure, the microprocessor control unit is connected to the explosion-proof controller by communication, adopts a high-speed communication bus, and the communication rate reaches 500kbps, receives the control signal of the explosion-proof controller and feeds back the working status information of the pressure regulator, and the feedback information includes the current pressure value, working mode, and fault code, and the microprocessor control unit runs a pressure regulation algorithm based on the combination of fuzzy control and PID control, which is as follows: the set pressure is P r ef, actual pressure is P a ctual, error e = P r ef-P actual , error change rate Output control quantity u, then Where K p , K i , K d They are proportional coefficient, integral coefficient and differential coefficient respectively, which are dynamically adjusted according to the real-time pressure changes through the online self-tuning algorithm to achieve fast and stable pressure regulation, so that the outlet pressure is stable at P ref Within the range of ±0.2kPa.

5. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: The invention comprises a safety monitoring element, wherein the safety monitoring element comprises a combustible gas leakage sensor and a door switch sensor. The combustible gas leakage sensor is arranged at the connection of the pressure regulating box pipeline and the valve seal, adopts a semiconductor gas sensor, has a detection sensitivity of 5ppm for methane, and a response time of less than 3s. When it is detected that the gas leakage concentration reaches a preset threshold value of 20ppm, an alarm signal is sent to the explosion-proof controller. After receiving the alarm signal, the explosion-proof controller controls the electric valve to close within 3 seconds and sends out an audible and visual alarm prompt. The sound intensity I of the audible and visual alarm prompt and the gas leakage concentration C satisfy the following relationship: I=80+2×C-20, wherein the unit of I is dB, and the optical signal adopts a red warning light with a flashing frequency of 2Hz; the door switch sensor is arranged on the door of the device, adopts a reed switch sensor, and when the door is opened in an unauthorized opening manner and during abnormal working hours, an alarm signal is sent to the explosion-proof controller. After receiving the alarm signal, the explosion-proof controller sends out an audible and visual alarm prompt.

6. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: A charging controller and a storage battery are connected between the solar panel and the explosion-proof controller. The charging controller adopts the maximum power point tracking technology, and the tracking efficiency is improved by 95%. The working point of the solar panel is adjusted in real time so that it always works in the maximum power output state, thereby improving the utilization efficiency of solar energy. The storage battery adopts a lithium-ion battery with a capacity of 100Ah and a cycle life of more than 2000 times. It has overcharge, over-discharge and short-circuit protection functions, and supplies power to the explosion-proof controller when solar energy is insufficient and the city power is cut off. When the battery power is lower than 20%, a low power alarm message is sent to the remote monitoring center through the remote communication module to ensure the continuous operation of the device.

7. The automatic pressure regulating device for a gas pressure regulating box according to claim 1, characterized in that: It includes a remote communication module, which is connected to the explosion-proof controller and uses 5G communication technology to interact with the remote monitoring center. The communication rate reaches 100Mbps, and the pressure and flow operation data are transmitted. The transmission interval is related to the gas flow. The operation and maintenance personnel remotely operate the device, check the status and receive alarm information through the remote monitoring center software platform. The platform can analyze historical data to generate pressure fluctuation curves, flow change curves and equipment failure statistical reports to provide support for gas management and equipment maintenance. Among them, the data transmission interval Δt and the gas flow Q meet the following requirements: When Q≤500m 3 / h, Δt=5-0.01×Q; the fitting function of the pressure fluctuation curve P(t is P(t=P0+a×sinωt+φ+b×t+c; the fitting function of the flow change curve Q(t is Q(t=Q0+d×e -kt +f×t 2 +g×t+h.

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