Natural gas delivery and metering system, method and electronic equipment

Abstract

The invention relates to the technical field of natural gas conveying, and particularly discloses a natural gas conveying and metering system and method and electronic equipment.The natural gas conveying and metering system comprises a base and a pipeline used for conveying natural gas, and the pipeline is installed on the base through a pipe support; the two ends of a pipeline are connected with an inlet gas collecting pipe and an outlet gas collecting pipe respectively, and natural gas enters the inlet gas collecting pipe from a gas source and then sequentially passes through an inlet isolating valve, an ultrasonic flowmeter, a pressure and temperature sensor and an outlet isolating valve to enter the outlet gas collecting pipe. A hoisting hole is further formed in the base, and the hoisting hole is used for hoisting the whole base to a ship body through hoisting equipment and installing the whole base. The natural gas conveying and metering system provided by the embodiment of the invention has remarkable beneficial effects in multiple aspects in the natural gas conveying and metering directions; in the aspect of installation, the whole base type design is convenient for integral hoisting installation, assembly in a workshop can avoid influence of complex environment on a ship site, working hours and manpower are remarkably saved, and installation difficulty and time cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas transmission, and in particular to a natural gas transmission and metering system, method and electronic equipment. Background Art

[0002] As countries pay more and more attention to environmental protection, natural gas, as a high-quality energy source, is used more and more widely, and the measurement of natural gas in international trade has become crucial.

[0003] When natural gas is transported and measured on ships in the traditional way, it is necessary to install various components of the external transmission metering system on the ship one by one, such as ultrasonic flowmeters, gas manifolds, temperature and pressure transmitters, etc., and to carry out on-site pipeline welding, assembly and debugging. This makes the installation process complicated and requires a lot of man-hours and manpower. In addition, the working environment on the ship is relatively harsh. The ship's roll and other conditions have extremely high requirements for the support of the front and rear gas manifolds of the flowmeter and the flatness of the base of each component, further increasing the difficulty and time cost of installation. If the above requirements are not met, it will affect the results of natural gas composition analysis, and then lead to errors in trade settlement. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least some extent. To this end, the purpose of the present invention is to provide a natural gas transmission and metering system, method and electronic equipment to optimize the installation difficulty of the natural gas transmission and metering system and improve the metering accuracy.

[0005] To achieve the above-mentioned purpose, the first aspect of the embodiment of the present invention proposes a natural gas transmission and metering system, including a base and a pipeline for transmitting natural gas, the pipeline is installed on the base through a pipe support, and the two ends of the pipeline are respectively connected to an inlet gas manifold and an outlet gas manifold. After the natural gas enters the inlet gas manifold from the gas source, it passes through an inlet isolation valve, an ultrasonic flowmeter, a pressure and temperature sensor and an outlet isolation valve in sequence and enters the outlet gas manifold; a lifting hole is also installed on the base, and the lifting hole is used for lifting equipment to lift the entire base to the hull and install it.

[0006] In some embodiments of the present invention, the pipeline includes two horizontal pipes and two vertical pipes, the two horizontal pipes are respectively connected to the inlet gas collecting pipe and the outlet gas collecting pipe, and the two ends of the two horizontal pipes are sealed and connected via the two vertical pipes.

[0007] In some embodiments of the present invention, a sampling tube is further connected to the inlet gas manifold, and the sampling tube is used to collect natural gas samples regularly or irregularly.

[0008] In some embodiments of the present invention, a pressure balancing pipe is connected to the pipeline at a position corresponding to the position between the inlet gas manifold and the inlet isolation valve, and the pressure balancing pipe is used to balance the pressure difference between different pipeline positions.

[0009] In some embodiments of the present invention, a nitrogen purge pipe is also connected to the pipeline, and the nitrogen purge pipe is used to purge the pipeline.

[0010] In some embodiments of the present invention, a flow regulator is connected to the pipeline at a position corresponding to the position between the inlet isolation valve and the ultrasonic flow meter, and the flow regulator is used to adjust the natural gas flow according to system requirements and a set flow value.

[0011] In some embodiments of the present invention, a ventilation tube is further connected to the pipeline, and the ventilation tube is used to balance the pressure in the pipeline.

[0012] In some embodiments of the present invention, a signal control box and a combustible gas leakage detector are also connected to the pipeline.

[0013] A natural gas transmission and metering method comprises the following steps: Gas source access and confluence: Natural gas enters the inlet manifold from the gas source. The inlet manifold serves as the initial gathering point, concentrating the natural gas from the gas source in preparation for subsequent transportation within the system; Natural gas transmission and control: After natural gas flows out from the inlet manifold, it first passes through the inlet isolation valve, and then enters the pipeline. The pipeline consists of two horizontal pipes and two vertical pipes, which are installed on the base through pipe supports to form a stable natural gas transmission path. Along the transmission path, the natural gas passes through the flow regulator, ultrasonic flowmeter, pressure and temperature sensor in the system in turn, and finally enters the outlet manifold through the outlet isolation valve. In this process, the ultrasonic flowmeter uses the propagation characteristics of ultrasonic waves in natural gas to measure the flow rate of natural gas, and the pressure and temperature sensors measure the pressure and temperature of the natural gas in real time when it flows through this location.

[0014] An electronic device comprises a memory, a processor and a computer program stored in the memory, wherein when the computer program is executed by the processor, the above-mentioned natural gas transmission and metering method is implemented.

[0015] To achieve the above objectives, a second aspect of the present invention provides an electronic device, including a memory, a processor and a computer program stored in the memory, wherein when the computer program is executed by the processor, the above-mentioned natural gas transmission and metering system is implemented.

[0016] The natural gas transmission and metering system of the embodiment of the present invention has many significant beneficial effects in the direction of natural gas transmission and metering; in terms of installation, the whole base design is convenient for overall lifting and installation, and assembly in the workshop can avoid the influence of the complex environment on the ship site, significantly save working hours and manpower, and reduce the difficulty and time cost of installation; at the same time, in terms of metering accuracy, the combined use of multiple components can accurately control the installation conditions of the flow meter, ensure a stable metering environment, greatly improve the metering accuracy, and reduce the risk of trade settlement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a natural gas transmission and metering system according to an embodiment of the present invention; Figure 2 It is a schematic structural diagram of an electronic device according to another embodiment of the present invention.

[0018] In the figure: 1. Pipeline; 11. Inlet isolation valve; 12. Flow regulator; 13. Ultrasonic flowmeter; 14. Outlet isolation valve; 15. Nitrogen purge pipe; 16. Vent pipe; 17. Pressure balance pipe; 18. Sampling tube; 2. Base; 3. Inlet gas manifold; 4. Outlet gas manifold; 5. Signal control box; 6. Pressure and temperature sensor; 7. Combustible gas leak detector. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The natural gas transmission and metering system, method and electronic device according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of a natural gas transmission and metering system according to an embodiment of the present invention.

[0022] like Figure 1 As shown, the natural gas transmission and metering system includes: a base 2 and a pipeline 1 for transmitting natural gas, the pipeline 1 is installed on the base 2 through a pipe support 22, and the two ends of the pipeline 1 are respectively connected to an inlet gas manifold 3 and an outlet gas manifold 4. After the natural gas enters the inlet gas manifold 3 from the gas source, it passes through the inlet isolation valve 11, the ultrasonic flowmeter 13, the pressure and temperature sensor 6 and the outlet isolation valve 14 in sequence and enters the outlet gas manifold 4; a lifting hole 21 is also installed on the base 2, and the lifting hole 21 is used for lifting equipment to lift the entire base 2 to the hull and install it.

[0023] In some embodiments of the present invention, the pipeline 1 includes two horizontal pipes and two vertical pipes. The two horizontal pipes are respectively connected to the inlet gas collecting pipe 3 and the outlet gas collecting pipe 4. The two ends of the two horizontal pipes are sealed and connected through two vertical pipes.

[0024] In some embodiments of the present invention, a sampling tube 18 is also connected to the inlet gas manifold 3. The sampling tube 18 is used to collect natural gas samples regularly or irregularly for natural gas component analysis, quality testing and other operations to ensure that the quality of the natural gas meets the requirements.

[0025] In some embodiments of the present invention, a pressure balancing pipe 17 is connected to the position of the pipeline 1 corresponding to the position between the inlet gas manifold 3 and the inlet isolation valve 11 , and the pressure balancing pipe 17 is used to balance the pressure difference between different positions of the pipeline 1 .

[0026] In some embodiments of the present invention, a nitrogen purge pipe 15 is also connected to the pipeline 1. The nitrogen purge pipe 15 is used to purge the natural gas pipeline 1 before system startup or after maintenance to remove impurities, air, etc. in the pipeline 1 to ensure the purity of the natural gas and the safe operation of the system.

[0027] In some embodiments of the present invention, a flow regulator 12 is connected to the position between the pipeline 1 corresponding to the inlet isolation valve 11 and the ultrasonic flowmeter 13. The flow regulator 12 is used to adjust the natural gas flow according to the system requirements and the set flow value to ensure that the natural gas transmission flow is stable within the set range.

[0028] In some embodiments of the present invention, a vent pipe 16 is further connected to the pipeline 1, and the vent pipe 16 is used to balance the pressure in the pipeline 1 to prevent the pipeline 1 from being damaged or affecting the operation of the system due to pressure changes.

[0029] In some embodiments of the present invention, a signal control box 5 and a combustible gas leakage detector 7 are also connected to the pipeline 1 .

[0030] The system uses an integral base 2 design to simplify the process: most of the assembly work of the natural gas transmission and metering system is completed in the workshop, including the connection of pipeline 1 and components, welding of structural parts, etc. Compared with the traditional installation of components one by one on the ship, it avoids the interference of factors such as limited space on the ship site and harsh environment (such as roll and roll) on the installation, greatly simplifies the installation process and improves the installation efficiency. For example, the traditional method may require workers to spend a lot of time on the ship to position, weld and debug components, while the integral design of the base 2 can be directly hoisted to the ship for installation after the assembly is completed in the workshop in an orderly manner, significantly shortening the installation cycle. Not only that, it also reduces the workload of on-site construction: most of the complex pipeline 1 welding, structural parts assembly and other work are completed in the workshop, reducing the workload of on-site construction on the ship. Only simple hoisting and conventional connection operations are required on the ship, which reduces the difficulty of construction, and also reduces the construction errors caused by factors such as ship shaking, and improves the installation quality.

[0031] On the other hand, the precise installation of the system ensures the accuracy of the flowmeter. When assembling the base 2 in the workshop, the length and installation accuracy of the gas manifolds before and after the ultrasonic flowmeter 13 can be controlled more accurately. Through strict processes and testing methods, such as inspection of straight pipe sections and welding inspection of structural parts, the installation environment of the flowmeter is guaranteed to meet the requirements, thereby improving the measurement accuracy of the flowmeter. Compared with the traditional installation on ships, which is difficult to achieve the same accuracy, this solution effectively reduces the measurement errors caused by improper installation and provides more accurate data support for natural gas trade handover. And the stable operating environment improves the measurement accuracy: the relative positions of the components on the base are stable, which effectively reduces the impact of external factors such as ship shaking on metering equipment such as flowmeters, and provides a stable operating environment for metering work. A stable environment helps the flowmeter to continuously and accurately measure the natural gas flow, further improves the accuracy of measurement, and ensures the fairness and justice of trade settlement.

[0032] A natural gas transmission and metering method comprises the following steps: Gas source access and confluence: Natural gas enters the inlet gas confluence pipe 3 from the gas source. The inlet gas confluence pipe 3 serves as the initial confluence point to collect the natural gas from the gas source and prepare for subsequent transportation within the system; Natural gas transmission and control: After the natural gas flows out from the inlet manifold 3, it first passes through the inlet isolation valve 11. The inlet isolation valve 11 controls the on-off of the natural gas entering the system. It remains open during normal operation so that the natural gas can smoothly enter the subsequent pipeline 1. During system inspection, maintenance or emergency, it can be closed to effectively cut off the gas source, ensuring system safety and operational convenience.

[0033] Then the natural gas enters the pipeline 1, which is composed of two horizontal pipes and two vertical pipes, and is installed on the base 2 through the pipe support 22 to form a stable transmission path. In the pipeline 1, the natural gas continues to flow under the action of the pressure difference, and its flow direction is guided by the structure and components of the pipeline 1; Along the transmission path, the natural gas passes through the flow regulator 12, ultrasonic flow meter 13, and pressure and temperature sensor 6 in the system in turn, and finally enters the outlet gas manifold 4 through the outlet isolation valve 14. The ultrasonic flow meter 13 uses the propagation characteristics of ultrasonic waves in natural gas to measure the flow rate of natural gas, and the pressure and temperature sensor 6 measures the pressure and temperature of natural gas when it flows through this position in real time. The outlet gas manifold 4 collects the natural gas again and then transports it to the downstream external transmission pipeline or other use and storage facilities.

[0034] Pressure balance and stability guarantee: A pressure balance pipe 17 is connected to the position between the inlet gas manifold 3 and the inlet isolation valve 11 of the pipeline 1. When a pressure difference occurs between different parts of the pipeline 1 of the system, the pressure balance pipe 17 balances these pressure differences through the flow of internal gas, ensuring that the pressure in the entire pipeline system is in a relatively stable state, preventing damage to the pipeline 1 or affecting the normal transportation of natural gas due to excessive pressure fluctuations.

[0035] The air vent 16 in the system also serves to balance the pressure in the pipeline 1 . It allows the excess gas in the pipeline 1 to be discharged or replenished, thereby maintaining the pressure balance in the pipeline 1 and further ensuring the stability of the system operation.

[0036] Natural gas metering principle: The ultrasonic flowmeter 13 measurement principle, when natural gas flows through the ultrasonic flowmeter 13, the ultrasonic flowmeter 13 uses the propagation characteristics of ultrasonic waves in natural gas to measure the flow rate of natural gas. It transmits and receives ultrasonic signals and measures the propagation time difference of ultrasonic waves in the downstream and upstream directions. According to the time difference and known parameters such as the inner diameter of the pipeline 1, the flow rate of natural gas can be accurately calculated using a specific calculation formula. This measurement method has the advantages of high precision, large measurement range, and is not affected by other pressure, temperature, and component changes. It can provide accurate flow data for natural gas trade transfer, etc.

[0037] Pressure and temperature parameters assist metering: The pressure and temperature sensor 6 measures the pressure and temperature of the natural gas in real time when it flows through the location. These parameters are crucial for accurately measuring the natural gas flow rate, because the volume of natural gas changes with changes in pressure and temperature. In actual metering, it is necessary to correct and compensate the flow data measured by the ultrasonic flowmeter 13 based on the gas state equation, such as the ideal gas state equation or the actual gas state equation, combined with the measured pressure and temperature values, so as to obtain a more accurate natural gas flow value under standard conditions, such as standard temperature and pressure conditions.

[0038] System operation monitoring and safety assurance principle; signal control and monitoring, the signal control box 5 plays a core control and monitoring role in the system. It receives electrical signals from pressure and temperature sensors 6, ultrasonic flowmeters 13 and other devices, and processes and analyzes these signals. Through the preset program and parameter range, the signal control box 5 can monitor the operating status of the system in real time, including whether the key parameters such as the flow, pressure, and temperature of natural gas are within the normal range. If the parameters exceed the set range, the signal control box 5 will issue a corresponding control instruction or alarm signal.

[0039] As an example, when the flow regulator 12 receives an instruction from the signal control box 5, it adjusts the valve opening according to the instruction, thereby adjusting the natural gas flow to keep it within a set stable range.

[0040] Combustible gas leakage monitoring and protection: Combustible gas leakage detectors 7 are installed in key parts of the system, such as around the gas manifold and at the connection of pipeline 1. It uses sensors sensitive to combustible gas to monitor the natural gas concentration in the surrounding environment in real time. Once a natural gas leak is detected, the combustible gas leakage detector 7 will immediately send out an alarm signal to remind the staff to take timely measures, such as finding the leak point, performing emergency repairs or taking corresponding safety protection measures to prevent natural gas leaks from causing fires, explosions and other safety accidents.

[0041] Principles of natural gas quality detection: The sampling tube 18 is connected to the inlet manifold 3 to collect natural gas samples. At a predetermined time interval or under specific conditions set by the system, the valve and other devices on the sampling tube 18 are controlled to allow natural gas to flow from the pipeline 1 into the sampling tube 18 and be collected in a special sample container. During the sampling process, the representativeness and accuracy of the sampling must be ensured to avoid the sample not being able to truly reflect the quality of the natural gas due to improper sampling methods.

[0042] Quality testing principle: The collected natural gas samples are sent to professional testing laboratories or used for analysis and testing using the testing equipment on board. Testing items usually include natural gas component analysis to determine the proportion of various gas components, calorific value determination to measure the energy content of natural gas, and impurity content detection such as the content of impurities such as hydrogen sulfide and moisture. Through various chemical analysis methods and instruments and equipment, the samples are accurately analyzed to determine whether the quality of natural gas meets the relevant standards and requirements, so as to ensure the quality of natural gas delivered and used, and to ensure the safe operation of the system and the use effect of downstream users.

[0043] The natural gas transmission and metering method has a flow regulator 12 installed between the corresponding inlet isolation valve 11 and the ultrasonic flow meter 13 of the pipeline 1. The regulator can accurately adjust the flow of natural gas according to the system requirements and the pre-set flow value. Through the real-time monitoring and feedback system (such as working in conjunction with the signal control box 5), the flow regulator 12 can quickly respond to changes in the natural gas flow and adjust the valve opening in time to keep the natural gas transmission flow stable within the set range. This is of great significance for meeting the needs of different user ends and optimizing the operating efficiency of the entire natural gas transmission network; Ultrasonic flowmeter 13 facilitates precise measurement and control: Ultrasonic flowmeter 13 uses its high-precision measurement principle to measure the flow rate of natural gas in real time and accurately calculate the flow rate. Its measurement results not only provide reliable data basis for trade transfer, but also provide key feedback information for the control of flow regulator 12. Through cooperation with flow regulator 12, precise control and regulation of natural gas flow is achieved, ensuring the stability and accuracy of natural gas flow during transportation, and avoiding adverse effects on pipeline 1 and downstream equipment caused by excessive flow fluctuations.

[0044] In addition, the method uses a pressure balance pipe 17 to stabilize the system pressure: a pressure balance pipe 17 is connected between the corresponding inlet gas manifold 3 and the inlet isolation valve 11 of the pipeline 1. When there is a pressure difference between pipelines 1 at different parts of the system, the pressure balance pipe 17 can automatically balance these pressure differences, so that the pressure in the entire pipeline system remains relatively stable. This plays an important role in preventing problems such as pipeline 1 rupture and equipment damage due to excessive pressure, and the normal transportation of natural gas affected by low pressure, and effectively ensures the safety and stability of the natural gas transportation process.

[0045] The provision of the vent pipe 16 further enhances the stability of the pressure in the pipeline 1. It can discharge excess gas or replenish gas in time when the pressure in the pipeline 1 changes, so that the pressure in the pipeline 1 is always within a safe and reasonable range. Whether the ship is sailing normally or encountering special working conditions (such as ship shaking, temperature changes, etc.), the vent pipe 16 can work together with the pressure balance pipe 17 to ensure that the pipeline system is not affected by pressure fluctuations and ensure the safe and stable transportation of natural gas.

[0046] Corresponding to the above embodiment, the present invention further provides an electronic device.

[0047] like Figure 2The figure shows a schematic diagram of the structure of an electronic device in the present invention, where the electronic device 200 includes: a processor 201 and a memory 203. The processor 201 and the memory 203 are connected, such as through a bus 202. Optionally, the electronic device 200 may further include a transceiver 204. It should be noted that in actual applications, the transceiver 204 is not limited to one, and the structure of the electronic device 200 does not constitute a limitation on the embodiments of the present invention.

[0048] The processor 201 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor 201 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0049] The bus 202 may include a path to transmit information between the above components. The bus 202 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 202 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0050] The memory 203 is used to store a computer program corresponding to the natural gas transmission and metering method of the above embodiment of the present invention, and the computer program is controlled and executed by the processor 201. The processor 201 is used to execute the computer program stored in the memory 203 to implement the contents shown in the above method embodiment.

[0051] The electronic device 200 includes, but is not limited to, mobile terminals such as laptop computers, PADs (tablet computers), and fixed terminals such as desktop computers. Figure 2 The electronic device 200 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0052] The electronic device 200 of the embodiment of the present invention has many significant beneficial effects. In terms of installation, the design of the whole base 2 is convenient for overall lifting and installation. Assembly in the workshop can avoid the influence of the complex environment on the ship site, significantly save manpower and time, and reduce the difficulty and time cost of installation. In terms of metering accuracy, the installation conditions of the flow meter can be accurately controlled to ensure a stable metering environment, greatly improve the metering accuracy, and reduce the risk of trade settlement errors. The flatness of the component base 2 is guaranteed, the system stability is enhanced, the impact of ship shaking is resisted, and the displacement and failure probability of components are reduced. Through strict inspection and debugging in the workshop, on-site construction errors are reduced, the system operation reliability is greatly improved, and operational hazards are effectively avoided. At the same time, it is convenient for natural gas quality testing, optimizes the installation of the sampling tube 18, and ensures the accuracy of detection; improves safety monitoring, reasonably plans equipment installation and wiring, enhances system safety, and comprehensively ensures that natural gas transportation and metering work are carried out efficiently, stably and safely.

[0053] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, transmit, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

[0054] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A natural gas transmission and metering system, comprising a base and a pipeline for transmitting natural gas, characterized in that: The pipeline is installed on the base through a pipe support, and the two ends of the pipeline are respectively connected to an inlet gas manifold and an outlet gas manifold. After the natural gas enters the inlet gas manifold from the gas source, it passes through the inlet isolation valve, ultrasonic flow meter, pressure and temperature sensor and outlet isolation valve in sequence and enters the outlet gas manifold; a lifting hole is also installed on the base, and the lifting hole is used for lifting equipment to lift the entire base to the hull and install it.

2. The natural gas transmission and metering system according to claim 1, characterized in that: The pipeline includes two horizontal pipes and two vertical pipes. The two horizontal pipes are respectively connected to the inlet gas collecting pipe and the outlet gas collecting pipe. The two ends of the two horizontal pipes are respectively connected in a sealed manner through the two vertical pipes.

3. The natural gas transmission and metering system according to claim 1, characterized in that: The inlet gas manifold is also connected to a sampling tube, and the sampling tube is used to collect natural gas samples regularly or irregularly.

4. The natural gas transmission and metering system according to claim 1, characterized in that: The pipeline is connected with a pressure balancing pipe at a position between the inlet gas manifold and the inlet isolation valve, and the pressure balancing pipe is used to balance the pressure difference between different pipeline positions.

5. The natural gas transmission and metering system according to claim 1, characterized in that: The pipeline is also connected to a nitrogen purge pipe, and the nitrogen purge pipe is used to purge the pipeline.

6. The natural gas transmission and metering system according to claim 1, characterized in that: A flow regulator is connected to the pipeline at a position corresponding to the inlet isolation valve and the ultrasonic flow meter. The flow regulator is used to adjust the natural gas flow according to system requirements and a set flow value.

7. The natural gas transmission and metering system according to claim 1, characterized in that: The pipeline is also connected with a ventilation tube, and the ventilation tube is used to balance the pressure in the pipeline.

8. The natural gas transmission and metering system according to claim 1, characterized in that: The pipeline is also connected with a signal control box and a combustible gas leakage detector.

9. A natural gas transmission and metering method, characterized in that: The following steps are involved: Gas source access and confluence: Natural gas enters the inlet manifold from the gas source. The inlet manifold serves as the initial gathering point, concentrating the natural gas from the gas source in preparation for subsequent transportation within the system; Natural gas transmission and control: After natural gas flows out from the inlet manifold, it first passes through the inlet isolation valve, and then enters the pipeline. The pipeline consists of two horizontal pipes and two vertical pipes, which are installed on the base through pipe supports to form a stable natural gas transmission path. Along the transmission path, the natural gas passes through the flow regulator, ultrasonic flowmeter, pressure and temperature sensor in the system in turn, and finally enters the outlet manifold through the outlet isolation valve. In this process, the ultrasonic flowmeter uses the propagation characteristics of ultrasonic waves in natural gas to measure the flow rate of natural gas, and the pressure and temperature sensors measure the pressure and temperature of the natural gas in real time when it flows through this location.

10. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory, wherein when the computer program is executed by the processor, the natural gas transmission and metering method according to claim 9 is implemented.

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