Improved fuel gas pressure regulating metering pry

Abstract

The invention relates to the technical field of fuel gas pressure regulating and metering, and discloses an improved fuel gas pressure regulating and metering pry which comprises a pressure regulating module, a main pipeline, a standby pipeline, a metering module, a safety protection module, a filtering module and a control module. The pressure regulating module, the metering module, the safety protection module, the filtering module and the control module are mutually connected through a main pipeline and a standby pipeline respectively, the pressure regulating module comprises a main pressure regulating valve, a main pressure buffer tank, a fine pressure regulating valve and a micro pressure buffer tank, and venturi silencers are additionally arranged at outlets of the main pressure regulating valve and the fine pressure regulating valve respectively; the metering module comprises a turbine flowmeter and an ultrasonic flowmeter, the pressure regulating module, the main pipeline, the standby pipeline, the metering module, the safety protection module, the filtering module and the control module are integrated, the problems that traditional equipment is large in size, low in precision and difficult to maintain are solved, and the safety and economical efficiency of gas transmission and distribution are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pressure regulation and metering, and particularly to an improved gas pressure regulation and metering skid. Background Art

[0002] A metering skid is a gas metering device, generally referring to integrating metering instruments related to metering, flow computers, valves, front and rear straight pipe sections, and other devices on a steel platform, which can be assembled and debugged at the production factory and then transported to the production site. That steel platform is called a skid. This kind of equipment that is manufactured in the factory and transported to the site as a whole is called a skid-mounted equipment. The equipment for metering purposes is called a metering skid. A gas pressure regulation and metering skid usually consists of a pressure regulator, a flowmeter, valves, a filter, and pipelines.

[0003] However, in practical applications, the existing gas pressure regulation and metering skids have the problem of structural redundancy. Traditional equipment is bulky, inconvenient for installation and maintenance, especially lacking flexibility when applied to scenarios with limited space, and also lacking in accuracy and stability. With a single pressure regulation stage or lacking a dynamic compensation mechanism, large pressure fluctuations and cumulative metering errors occur. At the same time, the maintenance cost is high. When the filter is blocked or components fail, shutdown for maintenance is required, affecting the continuity of gas supply.

[0004] Therefore, we propose an improved gas pressure regulation and metering skid. Summary of the Invention

[0005] The present invention mainly solves the technical problems existing in the above-mentioned prior art, and provides an improved gas pressure regulation and metering skid.

[0006] To achieve the above object, the present invention adopts the following technical solution. An improved gas pressure regulation and metering skid includes a pressure regulation module, a main pipeline, a standby pipeline, a metering module, a safety protection module, a filtering module, and a control module. The pressure regulation module, the metering module, the safety protection module, the filtering module, and the control module are respectively connected to each other through the main pipeline and the standby pipeline. The main pipeline and the standby pipeline adopt a redundant pipeline design, which can be switched to the standby pipeline when a single module fails, ensuring the continuity of gas supply. The main pipeline and the standby pipeline are respectively coated with an adiabatic coating to reduce the energy loss caused by the temperature fluctuation of the gas.

[0007] Preferably, the pressure regulation module includes a main pressure regulator, a main pressure buffer tank, a fine pressure regulator, and a fine pressure buffer tank. The main pressure regulator realizes coarse adjustment, and the fine pressure regulator dynamically compensates for pressure fluctuations based on the PID algorithm, with the output pressure stability error ≤ ±1%. Venturi mufflers are respectively added at the outlets of the main pressure regulator and the fine pressure regulator to reduce the noise to below 65 dB. The main pressure buffer tank and the fine pressure buffer tank are used to further eliminate the influence of pulsating air flow.

[0008] Preferably, the metering module 13 includes a turbine flowmeter and an ultrasonic flowmeter, which are combined in parallel to improve metering accuracy through a data fusion algorithm.

[0009] Preferably, the safety protection module includes a pressure sensor, a temperature sensor, a flow sensor, a combustible gas concentration sensor, an adaptive safety unit, an emergency shut-off valve, an audible and visual alarm, and a remote monitoring unit. When pressure overlimit or leakage is detected, the emergency shut-off valve will be closed within 0.5 seconds and the audible and visual alarm will be activated. The remote monitoring unit supports remote monitoring and synchronizes data to the cloud platform through the 4G / 5G module to achieve unattended operation.

[0010] Preferably, the filtration module includes a main filter cartridge, a pressure difference sensor, a reverse pulse purge device and a spare filter cartridge. The filtration module 15 adopts a double filter cartridge structure. The main filter cartridge has a built-in main filter screen. The main filter screen is made of stainless steel sintered fiber with a filtration accuracy of 5μm and a service life increased by 30%. When the pressure difference of the main filter screen is ≥50kPa, it automatically switches to the spare filter cartridge and triggers a reverse pulse purge to clear the blocked filter cartridge.

[0011] Preferably, the control module includes a PLC controller and a self-diagnosis unit, and the self-diagnosis unit can regularly generate equipment health reports and push maintenance suggestions.

[0012] Working principle: After the gas enters the pressure regulating module, it first passes through the main pressure regulating valve for preliminary pressure regulation, and then enters the main pressure buffer tank for airflow stabilization. The fine pressure regulating valve is based on a precise PID algorithm to perform subtle dynamic compensation on the pressure output by the main pressure regulating valve to ensure the stability of the output pressure, and the error is strictly controlled within ±1%. Venturi mufflers are installed at the outlets of the main pressure regulating valve and the fine pressure regulating valve. This design effectively reduces the noise level during equipment operation, so that the overall noise is controlled below 65dB, greatly improving the working environment. In the metering module, the turbine flowmeter and the ultrasonic flowmeter are configured in parallel. The two work together and through the data fusion algorithm, the accuracy and reliability of the metering can be significantly improved. This dual metering method not only improves the credibility of the data, but also provides a solid foundation for subsequent flow analysis and management. The safety protection module integrates a variety of sensors and emergency processing devices. When the system detects safety hazards such as pressure over-limit, temperature abnormality or gas leakage, it can quickly link the emergency shut-off valve to close within 0.5 seconds to effectively prevent the accident from expanding. At the same time, the sound and light alarm will start immediately to remind the operator to pay attention. The remote monitoring unit synchronizes data to the cloud platform in real time through the 4G / 5G module, realizing remote monitoring and unattended operation, which greatly improves the safety and convenience of the system. The filter module adopts a double filter cartridge structure, and the main filter cartridge and the spare filter cartridge work alternately to ensure the continuous clean supply of gas. The stainless steel sintered fiber filter built into the main filter cartridge has a filtration accuracy of up to 5μm, which can effectively intercept impurities and particulate matter and extend the service life of the equipment. When the pressure difference of the main filter reaches or exceeds 50kPa, the system will automatically switch to the spare filter cartridge and start the reverse pulse purge device to clean the blocked filter cartridge to ensure the continuous stability of the filtration efficiency. The control module, as the "brain" of the entire system, consists of a PLC controller and a self-diagnosis unit. The PLC controller is responsible for the overall control and scheduling of the system to ensure the coordinated operation of each module. The self-diagnosis unit can regularly generate equipment health reports and push maintenance recommendations based on the analysis results, providing strong support for preventive maintenance and troubleshooting of equipment.

[0013] The present invention provides an improved gas pressure regulating and metering skid, which has the following beneficial effects:

[0014] 1. This improved gas pressure regulating and metering skid integrates a pressure regulating module, a main pipeline, a backup pipeline, a metering module, a safety protection module, a filtering module and a control module, which solves the problems of large size, low precision and difficult maintenance of traditional equipment, and significantly improves the safety and economy of gas transmission and distribution.

[0015] 2. The improved gas pressure regulating and metering skid, by setting the main pipeline and the standby pipeline, through the redundant design of the main pipeline and the standby pipeline, improves the continuity and reliability of gas supply, and reduces the risk of gas supply interruption caused by equipment failure.

[0016] 3. The improved gas pressure regulating and metering skid, by setting the pressure regulating module, the pressure regulating module adopts the combination of the main pressure regulating valve and the fine pressure regulating valve, and combines the PID algorithm to achieve dynamic compensation, effectively improving the stability of the output pressure and reducing the impact of pressure fluctuation on the metering accuracy.

[0017] 4. The improved gas pressure regulating and metering skid, by setting the metering module, the metering module adopts the parallel configuration of the turbine flowmeter and the ultrasonic flowmeter, and combines the data fusion algorithm, improving the accuracy and reliability of metering, and providing more accurate data support for gas transmission and distribution.

[0018] 5. The improved gas pressure regulating and metering skid, by setting the safety protection module, the safety protection module integrates a variety of sensors and emergency treatment devices, realizes the rapid response and effective treatment of potential safety hazards, and improves the safety and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall module of the present invention;

[0020] Figure 2 It is a schematic diagram of the pressure regulating module of the present invention;

[0021] Figure 3 It is a schematic diagram of the metering module of the present invention;

[0022] Figure 4 It is a schematic diagram of the safety protection module of the present invention;

[0023] Figure 5 It is a schematic diagram of the filtering module of the present invention;

[0024] Figure 6 It is a schematic diagram of the control module of the present invention.

[0025] Legend: 10. Pressure regulating module; 11. Main pipeline; 12. Standby pipeline; 13. Metering module; 14. Safety protection module; 15. Filtering module; 16. Control module. DETAILED DESCRIPTION OF THE INVENTION

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0027] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present invention.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Embodiment 1: An improved gas pressure regulating and metering skid, such as Figure 1 As shown, it includes a pressure regulating module 10, a main pipeline 11, a spare pipeline 12, a metering module 13, a safety protection module 14, a filter module 15 and a control module 16, and the pressure regulating module 10, the metering module 13, the safety protection module 14, the filter module 15 and the control module 16 are respectively connected to each other through the main pipeline 11 and the spare pipeline 12. The main pipeline 11 and the spare pipeline 12 adopt a redundant pipeline design, which can be switched to the spare pipeline 12 when a single module fails to ensure the continuity of gas supply. The main pipeline 11 and the spare pipeline 12 are respectively coated with thermal insulation to reduce the energy loss caused by gas temperature fluctuations. The pressure regulating module 10 includes a main pressure regulating valve, a main pressure buffer tank, a fine pressure regulating valve and a micro pressure buffer tank. The main pressure regulating valve realizes coarse adjustment. The fine pressure regulating valve dynamically compensates for pressure fluctuations based on the PID algorithm. The output pressure stability error is ≤±1%. Venturi silencers are added to the outlets of the main pressure regulating valve and the fine pressure regulating valve to reduce the noise to below 65dB. The main pressure buffer tank and the micro pressure buffer tank are used to further eliminate the influence of pulsating airflow. The metering module 13 includes a turbine flowmeter and an ultrasonic flowmeter, which are combined in parallel to improve the metering accuracy through a data fusion algorithm. The safety protection module 14 includes a pressure sensor, a temperature sensor, a flow sensor, a combustible gas concentration sensor, an adaptive safety unit, an emergency shut-off valve, an audible and visual alarm, and a remote monitoring unit. When the pressure exceeds the limit or leaks, the emergency shut-off valve is closed within 0.5 seconds, and the audible and visual alarm is activated. The remote monitoring unit supports remote monitoring and synchronizes data to the cloud platform through the 4G / 5G module to achieve unattended operation. The filter module 15 includes a main filter cartridge, a differential pressure sensor, a reverse pulse purge device, and a spare filter cartridge. The filter module 15 adopts a double filter cartridge structure. The main filter cartridge has a built-in main filter screen. The main filter screen is made of stainless steel sintered fiber with a filtration accuracy of 5μm and a lifespan increase of 30%. When the pressure difference of the main filter screen is ≥50kPa, it automatically switches to the spare filter cartridge and triggers a reverse pulse purge to block the filter cartridge. The control module 16 includes a PLC controller and a self-diagnosis unit, which can regularly generate equipment health reports and push maintenance suggestions. By integrating the pressure regulating module 10, the main pipeline 11, the backup pipeline 12, the metering module 13, the safety protection module 14, the filter module 15 and the control module 16, the problems of large size, low precision and difficult maintenance of traditional equipment are solved, and the safety and economy of gas transmission and distribution are significantly improved.

[0033] Embodiment 2: Based on Embodiment 1, Figures 2 - 3As shown, the pressure regulating module 10 includes a main pressure regulating valve, a main pressure buffer tank, a fine pressure regulating valve and a micro pressure buffer tank. The main pressure regulating valve realizes coarse adjustment. The fine pressure regulating valve dynamically compensates for pressure fluctuations based on the PID algorithm. The output pressure stability error is ≤±1%. Venturi silencers are added to the outlets of the main pressure regulating valve and the fine pressure regulating valve to reduce the noise to below 65dB. The main pressure buffer tank and the micro pressure buffer tank are used to further eliminate the influence of pulsating airflow. The metering module 13 includes a turbine flowmeter and an ultrasonic flowmeter. The turbine flowmeter and the ultrasonic flowmeter are combined in parallel to improve the metering accuracy through the data fusion algorithm. The safety protection module 14 includes a pressure sensor, a temperature sensor, a flow sensor, a combustible gas concentration sensor, an adaptive safety unit, an emergency shut-off valve, an audible and visual alarm, and a remote monitoring unit. When the pressure exceeds the limit or leaks, the emergency shut-off valve is closed within 0.5 seconds, and the audible and visual alarm is activated. The remote monitoring unit supports remote monitoring and synchronizes data to the cloud platform through the 4G / 5G module to achieve unattended operation. The filter module 15 includes a main filter cartridge, a pressure difference sensor, a reverse pulse purge device and a spare filter cartridge. The filter module 15 adopts a double filter cartridge structure. The main filter cartridge has a built-in main filter screen. The main filter screen is made of stainless steel sintered fiber with a filtration accuracy of 5μm and a service life increased by 30%. When the pressure difference of the main filter screen is ≥50kPa, it automatically switches to the spare filter cartridge and triggers the reverse pulse purge to clear the blocked filter cartridge. The control module 16 includes a PLC controller and a self-diagnosis unit. The self-diagnosis unit can regularly generate equipment health reports and push maintenance recommendations. By setting up the main line 11 and the spare line 12, and through the redundant design of the main line 11 and the spare line 12, the continuity and reliability of the gas supply are improved, and the risk of gas supply interruption due to equipment failure is reduced.

[0034] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 4As shown, the safety protection module 14 includes a pressure sensor, a temperature sensor, a flow sensor, a combustible gas concentration sensor, an adaptive safety unit, an emergency shut-off valve, an audible and visual alarm, and a remote monitoring unit. When the pressure exceeds the limit or leaks, the emergency shut-off valve is closed within 0.5 seconds, and the audible and visual alarm is activated. The remote monitoring unit supports remote monitoring, and synchronizes the data to the cloud platform through the 4G / 5G module to achieve unattended operation. The filter module 15 includes a main filter cartridge, a pressure difference sensor, a reverse pulse purge device, and a spare filter cartridge. The filter module 15 adopts a double filter cartridge structure. The main filter cartridge has a built-in main filter screen. The main filter screen is made of stainless steel sintered fiber with a filtration accuracy of 5μm and a lifespan increase of 30%. When the pressure difference of the main filter screen is ≥50kPa, it automatically switches to the spare filter cartridge and triggers the reverse pulse purge to block the filter cartridge. The control module 16 includes a PLC controller and a self-diagnosis unit. The self-diagnosis unit can regularly generate equipment health reports and push maintenance suggestions. By setting up the pressure regulating module 10, the pressure regulating module 10 adopts the combination of the main pressure regulating valve and the fine pressure regulating valve, and combines the PID algorithm to realize dynamic compensation, which effectively improves the stability of the output pressure and reduces the influence of pressure fluctuation on the metering accuracy.

[0035] Embodiment 4: Based on Embodiment 1, Embodiment 2 and Embodiment 3, Figure 5 As shown, the filter module 15 includes a main filter cartridge, a pressure difference sensor, a reverse pulse purge device and a spare filter cartridge. The filter module 15 adopts a double filter cartridge structure. The main filter cartridge has a built-in main filter screen. The main filter screen is made of stainless steel sintered fiber with a filtration accuracy of 5μm and a lifespan increase of 30%. When the pressure difference of the main filter screen is ≥50kPa, it automatically switches to the spare filter cartridge and triggers the reverse pulse purge to block the filter cartridge. The control module 16 includes a PLC controller and a self-diagnosis unit. The self-diagnosis unit can regularly generate equipment health reports and push maintenance recommendations. By setting up a metering module 13, the metering module 13 uses a turbine flowmeter and an ultrasonic flowmeter in parallel configuration, combined with a data fusion algorithm, to improve the accuracy and reliability of metering, and provide more accurate data support for gas transmission and distribution.

[0036] Embodiment 5: Based on Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 4, Figure 6 As shown, the control module 16 includes a PLC controller and a self-diagnosis unit, which can regularly generate equipment health reports and push maintenance suggestions. By setting up a safety protection module 14, the safety protection module 14 integrates a variety of sensors and emergency processing devices, which can achieve rapid response and effective processing of safety hazards, thereby improving the safety and reliability of the system.

[0037] The working principle of the present invention is as follows: after the gas enters the pressure regulating module 10, it first passes through the main pressure regulating valve for preliminary pressure regulation, and then enters the main pressure buffer tank for airflow stabilization. The fine pressure regulating valve performs subtle dynamic compensation on the pressure output by the main pressure regulating valve based on a precise PID algorithm to ensure the stability of the output pressure, and the error is strictly controlled within ±1%. Venturi mufflers are installed at the outlets of the main pressure regulating valve and the fine pressure regulating valve. This design effectively reduces the noise level during the operation of the equipment, so that the overall noise is controlled below 65dB, greatly improving the working environment. In the metering module 13, the turbine flowmeter and the ultrasonic flowmeter are configured in parallel. The two work together and through the data fusion algorithm, the accuracy and reliability of the measurement can be significantly improved. This dual metering method not only improves the credibility of the data, but also provides a solid foundation for subsequent flow analysis and management. The safety protection module 14 integrates a variety of sensors and emergency processing devices. When the system detects safety hazards such as pressure over-limit, temperature abnormality or gas leakage, it can quickly link the emergency shut-off valve to close within 0.5 seconds to effectively prevent the accident from expanding. At the same time, the sound and light alarm will start immediately to remind the operator to pay attention. The remote monitoring unit synchronizes data to the cloud platform in real time through the 4G / 5G module, realizing remote monitoring and unattended operation, which greatly improves the safety and convenience of the system. The filter module 15 adopts a double filter cartridge structure, and the main filter cartridge and the spare filter cartridge work alternately to ensure the continuous clean supply of gas. The stainless steel sintered fiber filter built into the main filter cartridge has a filtration accuracy of up to 5μm, which can effectively intercept impurities and particulate matter and extend the service life of the equipment. When the pressure difference of the main filter reaches or exceeds 50kPa, the system will automatically switch to the spare filter cartridge and start the reverse pulse purge device to clean the blocked filter cartridge to ensure the continuous stability of the filtration efficiency. The control module 16, as the "brain" of the entire system, consists of a PLC controller and a self-diagnosis unit. The PLC controller is responsible for the overall control and scheduling of the system to ensure the coordinated operation between the modules. The self-diagnosis unit can regularly generate equipment health reports and push maintenance recommendations based on the analysis results, providing strong support for preventive maintenance and troubleshooting of equipment.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An improved gas pressure regulating and metering skid, characterized in that: The invention comprises a pressure regulating module (10), a main pipeline (11), a spare pipeline (12), a metering module (13), a safety protection module (14), a filtering module (15) and a control module (16); the pressure regulating module (10), the metering module (13), the safety protection module (14), the filtering module (15) and the control module (16) are respectively connected to each other through the main pipeline (11) and the spare pipeline (12); the pressure regulating module (10) comprises a main pressure regulating valve, a main pressure buffer tank, a micro pressure regulating valve and a micro pressure buffer tank.

2. The improved gas pressure regulating and metering skid according to claim 1 is characterized in that: Venturi silencers are respectively provided at the outlets of the main pressure regulating valve and the fine pressure regulating valve.

3. The improved gas pressure regulating and metering skid according to claim 1 is characterized in that: The metering module (13) comprises a turbine flowmeter and an ultrasonic flowmeter.

4. The improved gas pressure regulating and metering skid according to claim 1 is characterized in that: The safety protection module (14) comprises a pressure sensor, a temperature sensor, a flow sensor, a combustible gas concentration sensor, an adaptive safety unit, an emergency shut-off valve, an audible and visual alarm, and a remote monitoring unit.

5. The improved gas pressure regulating and metering skid according to claim 1 is characterized in that: The filter module (15) comprises a main filter cartridge, a differential pressure sensor, a reverse pulse purge device and a spare filter cartridge.

6. The improved gas pressure regulating and metering skid according to claim 5 is characterized in that: The main filter cartridge has a built-in main filter screen.

7. The improved gas pressure regulating and metering skid according to claim 6 is characterized by: The main filter is made of stainless steel sintered fiber.

8. The improved gas pressure regulating and metering skid according to claim 1 is characterized in that: The control module (16) includes a PLC controller and a self-diagnosis unit.

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