A gas supply system for a natural gas generator set

Abstract

The utility model discloses a natural gas generating set's gas supply system, including gas cut -out valve, filter, pressure regulator, pressure gauge, flame arrestor and fuel control valve. Gas cut -out valve is used for cutting off gas supply when engine stops working, filter filters water and impurity in gas, pressure regulator adjusts the gas pressure required by engine work, pressure gauge shows gas pressure, flame arrestor prevents the flame from descending when the accident, fuel control valve controls fuel supply amount according to engine working condition. The components are sealed connection in proper order and are communicated, and the gas cut -out valve is connected with the natural gas source, and the fuel control valve is connected with the engine mixer. The system adopts the sealed pipeline connection of corrosion -resistant, high -pressure -resistant, sets up the sealing element, and the connection mode is various, and manual stop valve and bypass pipeline can be further set up to guarantee the practicality of the system. The system is high in safety, stable in operation, convenient in maintenance, can effectively improve energy utilization efficiency, reduces harmful gas emission.

Description

Technical Field

[0001] This utility model relates to the field of gas supply technology for natural gas generator sets, and more specifically, to an energy-saving and environmentally friendly gas supply system for natural gas generator sets. Background Technology

[0002] In the field of energy utilization, natural gas generator sets, due to their high efficiency and cleanliness, have been widely used in distributed generation, backup power, and other scenarios. However, existing natural gas generator set gas supply systems still have some problems that urgently need to be solved. These problems not only affect the performance and reliability of the generator sets but also pose challenges to energy efficiency and environmental protection. Specifically, the following problems exist: 1. Traditional natural gas generator sets lack effective safety shut-off devices and flame arrestors in their gas supply systems. When the engine stops working, the gas supply cannot be cut off in time, which can easily lead to gas leaks and increase the risk of fire and explosion. Moreover, in the event of an accident, there is no reliable flame arrestor to prevent the flames from spreading downwards, which may cause more serious safety accidents and pose a great threat to the safety of equipment and personnel. 2. Water and impurities in the gas can cause wear and blockage of engine components, affecting the normal operation of the engine. At the same time, traditional gas supply systems struggle to precisely regulate gas pressure, preventing the engine from receiving the appropriate gas volume under different operating conditions, leading to unstable engine performance and low power generation efficiency. Furthermore, the lack of real-time pressure monitoring devices makes it difficult for operators to detect abnormal gas pressure in a timely manner and take appropriate measures, further impacting the operational stability of the generator set. 3. Existing gas supply systems require shutdown for maintenance and repair, leading to power outages and inconvenience to users. Furthermore, when filters need cleaning or replacement, the entire system must be shut down, affecting the generator's continuous power supply capability. In addition, traditional connection methods and sealing measures are prone to leaks and loosening, increasing maintenance difficulty and costs. The natural gas generator sets in the fourth section use fuel that burns incompletely, which easily produces carbon deposits. This not only reduces energy efficiency but also increases the emission of harmful gases such as carbon monoxide, carbon dioxide, and sulfur dioxide, causing environmental pollution and hindering the sustainable use of energy.

[0003] How to more effectively solve the above problems is an important issue that needs to be addressed in natural gas generator sets. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and propose a gas supply system for a natural gas generator set, comprising: A gas shut-off valve, which is used to cut off the gas supply when the engine stops working; A filter, the filter being used to remove water and impurities from the gas; A pressure regulator, used to regulate the pressure of the combustion gas required for engine operation; Pressure gauge, the pressure gauge being used to display the gas pressure; A flame arrester, used to prevent the spread of flames in the event of an accident; A fuel control valve, which is used to precisely control the fuel supply according to the engine's operating conditions; The gas shut-off valve, filter, pressure regulator, pressure gauge, and flame arrester are connected in sequence and sealed together.

[0005] Preferably, the gas shut-off valve has a gas inlet at the end furthest from the filter, and the gas inlet is connected to an external natural gas source via a pipeline; Preferably, the fuel control valve has a gas outlet at the end furthest from the flame arrester, and the gas outlet is connected to an external engine mixer.

[0006] Preferably, the gas shut-off valve, filter, pressure regulator, pressure gauge, flame arrester, and fuel control valve are all connected by sealed pipes, and the sealed pipes are made of corrosion-resistant and high-pressure-resistant metal or non-metal materials to ensure that there is no leakage of gas during the transportation process.

[0007] Preferably, the connection points at both ends of the sealed pipe are equipped with sealing elements.

[0008] Preferably, the sealing element is a sealing gasket or sealant.

[0009] Preferably, the connection between the sealed pipeline and the gas shut-off valve, filter, pressure regulator, pressure gauge, flame arrester, and fuel control valve adopts one or more of the following methods: threaded connection, flange connection, or quick-connect connection, to ensure the tightness and stability of the connection and prevent gas leakage and component loosening.

[0010] Preferably, a manual shut-off valve is installed on the connection pipeline between the gas shut-off valve and the natural gas source, which is used to manually shut off the input of natural gas during maintenance, repair or emergency of the gas supply system.

[0011] Preferably, a bypass pipe is also provided on the connecting pipe between the filter and the pressure regulator. A bypass valve is installed on the bypass pipe. When the filter needs to be cleaned or the filter element needs to be replaced, the bypass valve can be opened to allow the gas to bypass the filter through the bypass pipe, ensuring the continuous operation of the generator set.

[0012] Compared with existing technologies, the beneficial effects of this utility model are: 1. By setting up a gas shut-off valve, the gas supply can be quickly cut off when the engine stops working, effectively avoiding the risk of gas leakage, providing reliable protection for the safety of equipment and personnel, and preventing safety accidents such as fires and explosions caused by gas leakage.

[0013] 2. By installing a flame arrester, the flame can be prevented from spreading downwards in the event of an accident, greatly reducing the possibility of serious accidents such as explosions and further enhancing the safety of the entire gas supply system. 3. By using corrosion-resistant and high-pressure-resistant sealed pipes to connect various components, and installing seals (such as gaskets and sealants) at the connection points, and adopting threaded connections, flange connections, or quick-connect connections, it is possible to ensure that there is no leakage of gas during the transmission process, thus ensuring the safety and stability of the system operation and reducing safety hazards caused by gas leakage. 4. Through the structure of the filter, water and impurities in the fuel gas can be filtered out, preventing these impurities from entering the engine and causing wear or blockage of parts, thereby ensuring stable engine operation and extending engine life; 5. Through the structure of the pressure regulator, the pressure of the gas required for engine operation can be precisely adjusted, so that the engine can obtain the appropriate amount of gas under different operating conditions, ensuring that the engine is always in the best working state, and improving the operating stability and power generation efficiency of the generator set. 6. The pressure gauge's structure allows for real-time display of gas pressure, enabling operators to monitor system operation promptly, detect and address potential issues such as pressure anomalies, and ensure the stable and reliable operation of the entire gas supply system. 7. By installing a manual shut-off valve on the connection pipeline between the gas shut-off valve and the natural gas source, the input of natural gas can be manually shut off during maintenance, repair, or emergency situations in the gas supply system, providing convenient conditions for staff to safely perform equipment maintenance and troubleshooting. 8. By installing a bypass pipe and bypass valve on the connecting pipe between the filter and the pressure regulator, when the filter needs to be cleaned or the filter element replaced, the bypass valve can be opened to allow the gas to bypass the filter through the bypass pipe, ensuring the continuous operation of the generator set, reducing equipment downtime, and improving production efficiency and maintenance convenience. 9. By adopting a natural gas engine structure that uses natural gas as fuel, natural gas combustion is stable and clean, less prone to knocking and carbon buildup, which can fully utilize engine performance, improve energy efficiency, and reduce emissions of harmful gases such as carbon monoxide, carbon dioxide, and sulfur dioxide. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of a gas supply energy-saving and environmentally friendly system for a natural gas generator set proposed in this utility model.

[0015] In the diagram, 1-gas shut-off valve; 2-filter; 3-pressure regulator; 4-pressure gauge; 5-flame arrester; 6-fuel control valve; Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Referring to the figure, this embodiment provides a gas supply system for a natural gas generator set, including: Gas shut-off valve 1, which is used to shut off the gas supply when the engine stops working; Filter 2, which is used to filter out water and impurities from the gas; Pressure regulator 3, which is used to regulate the pressure of the gas required for engine operation; Pressure gauge 4, which is used to display the gas pressure; Flame arrester 5, which is used to prevent the flame from spreading downward in the event of an accident; Fuel control valve 6, which is used to precisely control the fuel supply according to the engine's operating conditions; The gas shut-off valve 1, filter 2, pressure regulator 3, pressure gauge 4, and flame arrester 5 are connected in sequence and sealed together.

[0018] Furthermore, the gas shut-off valve 1 is provided with a gas inlet at the end away from the filter 2, and the gas inlet is connected to an external natural gas source through a pipeline; Furthermore, the fuel control valve 6 has a gas outlet at the end away from the flame arrester 5, and the gas outlet is connected to an external engine mixer.

[0019] Furthermore, the gas shut-off valve 1, filter 2, pressure regulator 3, pressure gauge 4, flame arrester 5, and fuel control valve 6 are all connected by sealed pipes, and the sealed pipes are made of corrosion-resistant and high-pressure-resistant metal or non-metal materials to ensure that there is no leakage of gas during the transportation process.

[0020] Furthermore, the connection points at both ends of the sealed pipe are equipped with sealing elements.

[0021] Furthermore, the sealing element is a sealing gasket or sealant.

[0022] Furthermore, the connection between the sealed pipeline and the gas shut-off valve 1, filter 2, pressure regulator 3, pressure gauge 4, flame arrester 5, and fuel control valve 6 shall be one or more of the following: threaded connection, flange connection, or quick-connect connection, to ensure the tightness and stability of the connection and prevent gas leakage and loosening of components.

[0023] Furthermore, a manual shut-off valve is installed on the connection pipeline between the gas shut-off valve 1 and the natural gas source, which is used to manually shut off the input of natural gas during maintenance, repair or emergency situations of the gas supply system.

[0024] As a further embodiment, a bypass pipe can also be provided on the connecting pipe between the filter 2 and the pressure regulator 3. A bypass valve is installed on the bypass pipe. When the filter 2 needs to be cleaned or the filter element is replaced, the bypass valve can be opened to allow the gas to bypass the filter 2 through the bypass pipe, ensuring the continuous operation of the generator set.

[0025] Based on the above embodiments, the specific working principle of this unit is as follows: The gas is supplied from a natural gas source and first passes through a gas shut-off valve. When the engine stops working, the gas supply can be quickly cut off to prevent gas leakage and ensure the safety of equipment and personnel.

[0026] Next, the fuel gas enters the filter, where water and impurities in the fuel gas are effectively filtered out, ensuring that the fuel gas entering the subsequent system is pure and preventing these impurities from causing wear or blockage to engine parts.

[0027] The gas then reaches the pressure regulator, which adjusts the gas pressure according to the engine's operating requirements to achieve the pressure value necessary for normal engine operation. A pressure gauge displays the gas pressure in real time, facilitating monitoring by operators.

[0028] Flame arresters are an important part of safety assurance. In the event of an accident, such as backfire, they can effectively prevent the flames from spreading down the pipes and prevent more serious dangers such as explosions. Finally, the fuel control valve precisely controls the gas supply based on the engine's operating conditions, such as load, to ensure that the engine receives the appropriate amount of gas under different operating conditions.

[0029] After being processed by the gas supply system, the natural gas enters the engine mixer. In the mixer, natural gas and air are thoroughly mixed in a specific ratio to form a combustible mixture. This combustible mixture enters the engine combustion chamber and is ignited by the spark plug (for spark-ignition natural gas engines) or spontaneously combusts during compression (for compression-ignition natural gas engines, which are relatively rare and usually require special design). The combustion of natural gas produces high-temperature, high-pressure gas, which drives the piston to reciprocate within the cylinder, converting the chemical energy of the natural gas into mechanical energy. The piston's reciprocating motion is transmitted to the crankshaft via the connecting rod, causing the crankshaft to rotate and thus driving the engine to output mechanical energy.

[0030] The mechanical energy output by the engine drives the generator. The generator contains a stator and a rotor. When the rotor rotates under the engine's power, it induces an electromotive force in the stator windings, thus outputting electrical energy. The controller plays a crucial role in intelligent regulation throughout the process. It monitors the operating parameters of the engine and generator in real time, such as speed, voltage, and temperature. Based on these parameters, the controller precisely controls the fuel control valve, ignition system, and other components to ensure that the engine and generator are always in optimal operating condition and stably output electrical energy.

[0031] The gas supply system of this natural gas generator set has the following advantages over existing natural gas supply technologies: 1. By setting up a gas shut-off valve, the gas supply can be quickly cut off when the engine stops working, effectively avoiding the risk of gas leakage, providing reliable protection for the safety of equipment and personnel, and preventing safety accidents such as fires and explosions caused by gas leakage.

[0032] 2. By installing a flame arrester, the flame can be prevented from spreading downwards in the event of an accident, greatly reducing the possibility of serious accidents such as explosions and further enhancing the safety of the entire gas supply system. 3. By using corrosion-resistant and high-pressure-resistant sealed pipes to connect various components, and installing seals (such as gaskets and sealants) at the connection points, and adopting threaded connections, flange connections, or quick-connect connections, it is possible to ensure that there is no leakage of gas during the transmission process, thus ensuring the safety and stability of the system operation and reducing safety hazards caused by gas leakage. 4. Through the structure of the filter, water and impurities in the fuel gas can be filtered out, preventing these impurities from entering the engine and causing wear or blockage of parts, thereby ensuring stable engine operation and extending engine life; 5. Through the structure of the pressure regulator, the pressure of the gas required for engine operation can be precisely adjusted, so that the engine can obtain the appropriate amount of gas under different operating conditions, ensuring that the engine is always in the best working state, and improving the operating stability and power generation efficiency of the generator set. 6. The pressure gauge's structure allows for real-time display of gas pressure, enabling operators to monitor system operation promptly, detect and address potential issues such as pressure anomalies, and ensure the stable and reliable operation of the entire gas supply system. 7. By installing a manual shut-off valve on the connection pipeline between the gas shut-off valve and the natural gas source, the input of natural gas can be manually shut off during maintenance, repair, or emergency situations in the gas supply system, providing convenient conditions for staff to safely perform equipment maintenance and troubleshooting. 8. By installing a bypass pipe and bypass valve on the connecting pipe between the filter and the pressure regulator, when the filter needs to be cleaned or the filter element replaced, the bypass valve can be opened to allow the gas to bypass the filter through the bypass pipe, ensuring the continuous operation of the generator set, reducing equipment downtime, and improving production efficiency and maintenance convenience. 9. By adopting a natural gas engine structure that uses natural gas as fuel, natural gas combustion is stable and clean, and it is not easy to produce knocking and carbon deposits. It can fully utilize engine performance, improve energy utilization efficiency, and reduce emissions of harmful gases such as carbon monoxide, carbon dioxide, and sulfur dioxide. It actively responds to the national dual-carbon strategy and the direction of energy diversification and transformation, and is in line with the trend of green and low-carbon energy development.

[0033] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

[0034] Furthermore, it should be understood in the description of this utility model that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A gas supply system for a natural gas generator set, characterized in that, include: Gas shut-off valve (1), the gas shut-off valve (1) is used to shut off the gas supply when the engine stops working; Filter (2), the filter (2) is used to filter out water and impurities in the gas; Pressure regulator (3), the pressure regulator (3) is used to regulate the pressure of the gas required for engine operation; Pressure gauge (4), the pressure gauge (4) is used to display the gas pressure; A flame arrester (5) is used to prevent the flame from spreading downwards in the event of an accident; Fuel control valve (6), which is used to precisely control the fuel supply according to the engine operating conditions; The gas shut-off valve (1), filter (2), pressure regulator (3), pressure gauge (4), and flame arrester (5) are connected in sequence and sealed together.

2. The gas supply system for the natural gas generator set according to claim 1, characterized in that, The gas shut-off valve (1) is provided with a gas inlet at the end away from the filter (2), and the gas inlet is connected to an external natural gas source through a pipeline.

3. The gas supply system for the natural gas generator set according to claim 1, characterized in that, The fuel control valve (6) has a gas outlet at the end away from the flame arrester (5), and the gas outlet is connected to an external engine mixer.

4. The gas supply system for the natural gas generator set according to claim 1, characterized in that, The gas shut-off valve (1), filter (2), pressure regulator (3), pressure gauge (4), flame arrester (5) and fuel control valve (6) are all connected by sealed pipes, and the sealed pipes are made of corrosion-resistant and high-pressure-resistant metal or non-metal materials to ensure that there is no leakage of gas during the transportation process.

5. The gas supply system for the natural gas generator set according to claim 4, characterized in that, The connection points at both ends of the sealed pipe are equipped with sealing elements.

6. The gas supply system for the natural gas generator set according to claim 5, characterized in that, The sealing components are sealing gaskets and sealant.

7. The gas supply system for a natural gas generator set according to claim 5, characterized in that, The connection between the sealed pipeline and the gas shut-off valve (1), filter (2), pressure regulator (3), pressure gauge (4), flame arrester (5), and fuel control valve (6) adopts one or more of the following methods: threaded connection, flange connection, or quick-connect connection, to ensure the tightness and stability of the connection and prevent gas leakage and loosening of components.

8. The gas supply system for the natural gas generator set according to claim 1, characterized in that, The gas shut-off valve (1) is equipped with a manual shut-off valve on the connection pipeline between the gas supply valve (1) and the natural gas source, which is used to manually shut off the input of natural gas during maintenance, repair or emergency of the gas supply system.

9. The gas supply system for a natural gas generator set according to claim 1, characterized in that, A bypass pipe is also provided on the connecting pipe between the filter (2) and the pressure regulator (3). A bypass valve is installed on the bypass pipe. When the filter (2) needs to be cleaned or the filter element is replaced, the bypass valve can be opened so that the gas passes through the bypass pipe and bypasses the filter (2), thus ensuring the continuous operation of the generator set.

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