A high-low pressure regulating system for a gas engine

Abstract

The application provides a high-low pressure regulating system for a gas engine and relates to the technical field of auxiliary devices of gas engines.The high-low pressure regulating system for the gas engine comprises an air inlet pipeline device, a low-pressure gas pipeline device and a high-pressure gas pipeline device.The air inlet pipeline device comprises an air inlet pipe, the air inlet end of the air inlet pipe is connected with a municipal gas pipeline, the air outlet end of the air inlet pipe is connected with a first air inlet branch pipe and a second air inlet branch pipe which are arranged in parallel, the first air inlet branch pipe is connected with the air inlet end of the low-pressure gas pipeline device, the air outlet end of the low-pressure gas pipeline device is used for connecting a low-pressure gas engine, the second air inlet branch pipe is connected with the air inlet end of the high-pressure gas pipeline device, and the air outlet end of the high-pressure gas pipeline device is used for connecting a high-pressure gas engine.The air inlet pipeline device, the low-pressure gas pipeline device and the high-pressure gas pipeline device are matched with each other, the effect of gas pressure regulation is remarkable, and the application range is wide.

Description

Technical Field

[0001] This invention relates to the field of auxiliary devices for gas engines, and more specifically to a high and low pressure regulation system for a gas engine. Background Technology

[0002] Gas engines are engines that use natural gas as fuel. They come in various types, including low-pressure gas engines and high-pressure gas engines.

[0003] Land-based gas engines are low-pressure gas engines, requiring a lower gas pressure than municipal gas, making them unsuitable for direct use. Multi-point injection gas engines are high-pressure gas engines, requiring a higher gas pressure than municipal gas, making them unsuitable for direct use as well.

[0004] Therefore, if municipal gas is to be used in a gas engine, its high and low pressure must be regulated. Currently, there is no device on the market that can effectively regulate the high and low pressure of municipal gas to adapt it to low-pressure or high-pressure gas engines. Summary of the Invention

[0005] The purpose of this invention is to provide a high and low pressure regulation system for gas engines, so as to solve the technical problem that the gas pressure of existing municipal gas cannot be directly adapted to low-pressure or high-pressure gas engines. The preferred technical solutions among the many technical solutions provided by this invention can produce many technical effects, which are described in detail below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a high and low pressure regulation system for a gas engine, comprising an intake pipeline device, a low-pressure gas pipeline device, and a high-pressure gas pipeline device, wherein: the intake pipeline device includes an intake pipe, the intake end of which is connected to a municipal gas pipeline, and the outlet end of which is connected to a first intake branch pipe and a second intake branch pipe arranged in parallel; the first intake branch pipe is connected to the intake end of the low-pressure gas pipeline device, and the outlet end of the low-pressure gas pipeline device is used to connect to a low-pressure gas engine; the second intake branch pipe is connected to the intake end of the high-pressure gas pipeline device, and the outlet end of the high-pressure gas pipeline device is used to connect to a high-pressure gas engine.

[0008] The low-pressure and high-pressure in this invention are based on the pressure of municipal gas. A gas engine that requires a gas pressure lower than the municipal gas pressure is a low-pressure gas engine, and a gas engine that requires a gas pressure higher than the municipal gas pressure is a high-pressure gas engine.

[0009] Preferably, both the first and second intake branches are provided with an intake filter and an intake flow meter in sequence along the gas flow direction.

[0010] Preferably, both the first intake branch pipe and the second intake branch pipe are equipped with valves.

[0011] Preferably, the intake pipe device includes a branch pipe, one end of which is connected to the outlet end of the first intake branch pipe, and the other end of which is connected to the outlet end of the second intake branch pipe; a valve is provided on the branch pipe.

[0012] Preferably, the low-pressure gas pipeline device includes a low-pressure gas delivery pipeline, the inlet end of which is connected to the outlet end of the first inlet branch pipe, and the outlet end of which is used to connect to a low-pressure gas engine; the low-pressure gas delivery pipeline is provided with a first filter, a first electromagnetic gas supply valve, an electromagnetic slow-opening valve, a first pressure gauge, a first pressure regulating valve, a low-pressure outlet pressure gauge, and a low-pressure outlet flow meter in sequence along the gas flow direction; a first vent pipe is connected to the low-pressure gas delivery pipeline at a position between the first electromagnetic gas supply valve and the electromagnetic slow-opening valve, and a first electromagnetic vent valve is provided on the first vent pipe.

[0013] Preferably, the low-pressure gas pipeline device includes an electromagnetic emergency shut-off valve, which is installed on the low-pressure gas transmission pipeline.

[0014] Preferably, the low-pressure gas pipeline device includes a flame arrester, which is disposed on the low-pressure gas delivery pipeline and located upstream of the first filter.

[0015] Preferably, the high-pressure gas pipeline device includes a high-pressure gas delivery pipeline, the inlet end of which is connected to the outlet end of the second inlet branch pipe, and the outlet end of which is used to connect to a high-pressure gas engine; the high-pressure gas delivery pipeline is provided with, in sequence along the gas flow direction, a first pressure stabilizing tank, a second filter, a compressor, a third filter, a one-way valve, a pressure stabilizing filter group, a fourth filter, a second pressure gauge, a second electromagnetic gas supply valve, a second pressure regulating valve, a high-pressure outlet pressure gauge, and a high-pressure outlet flow meter; a second vent pipe is connected to the high-pressure gas delivery pipeline at a position between the second electromagnetic gas supply valve and the second pressure regulating valve, and a second electromagnetic vent valve is provided on the second vent pipe.

[0016] Preferably, the pressure-stabilizing filter group includes a pressure-stabilizing tank group and a filter group connected in sequence, wherein: the pressure-stabilizing tank group includes a plurality of second pressure-stabilizing tanks arranged in parallel; and the filter group includes a plurality of fifth filters arranged in parallel.

[0017] Preferably, a return pipe is connected to the second vent pipe downstream of the second electromagnetic vent valve. The return end of the return pipe is connected to the high-pressure gas transmission pipeline and is located downstream of the second pressure regulating valve. A third pressure gauge is installed on the high-pressure gas transmission pipeline between the second pressure regulating valve and the high-pressure outlet pressure gauge.

[0018] The high and low pressure regulation system for a gas engine provided by this invention has at least the following beneficial effects:

[0019] The high and low pressure regulation system for the gas engine includes an intake pipeline device, a low-pressure gas pipeline device, and a high-pressure gas pipeline device. The intake pipeline device is used to supply gas to the low-pressure gas pipeline device and the high-pressure gas pipeline device.

[0020] The intake pipeline device includes an intake pipe, the intake end of which is connected to a municipal gas pipeline, and the outlet end of which is connected to a first intake branch pipe and a second intake branch pipe arranged in parallel. The first intake branch pipe is connected to the intake end of the low-pressure gas pipeline device, and the outlet end of the low-pressure gas pipeline device is used to connect to a low-pressure gas engine. The second intake branch pipe is connected to the intake end of the high-pressure gas pipeline, and the outlet end of the high-pressure gas pipeline device is used to connect to a high-pressure gas engine. In actual use, according to actual needs, the corresponding intake branch pipe is selected to supply gas to the corresponding low-pressure gas pipeline device and high-pressure gas pipeline device, enabling them to work, thereby realizing the regulation of the gas pressure of the corresponding gas engine to meet the demand.

[0021] This invention enables the reduction of municipal gas pressure through a low-pressure gas pipeline device, suitable for low-pressure gas engines; and enables the increase of municipal gas pressure through a high-pressure gas pipeline device, suitable for high-pressure gas engines. The intake pipeline device, low-pressure gas pipeline device, and high-pressure gas pipeline device work together to achieve not only significant gas pressure regulation but also a wide range of applications. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the intake pipe device of the present invention;

[0025] Figure 3 This is a schematic diagram of the low-pressure gas pipeline device of the present invention;

[0026] Figure 4 This is a structural schematic diagram of the high-pressure gas pipeline device of the present invention.

[0027] Figure Labels

[0028] 1. Intake Piping System; 101. Intake Pipe; 102. First Intake Branch Pipe; 103. Second Intake Branch Pipe; 104. Valve; 105. Intake Filter; 106. Intake Flow Meter; 107. Branch Pipe; 2. Low-Pressure Gas Piping System; 201. Low-Pressure Gas Delivery Pipeline; 202. First Filter; 203. First Solenoid Gas Supply Valve; 204. Solenoid Soft-Opening Valve; 205. First Pressure Gauge; 206. First Pressure Regulating Valve; 207. Low-Pressure Outlet Pressure Gauge; 208. Low-Pressure Outlet Flow Meter; 209. First Vent Pipe; 210. First Solenoid Vent Valve; 211. Solenoid Emergency Shut-Off Valve; 212. Flame Arrestor; 3. High-pressure gas pipeline system; 301. High-pressure gas delivery pipeline; 302. First pressure stabilizing tank; 303. Second filter; 304. Compressor; 305. Third filter; 306. Check valve; 307. Fourth filter; 308. Second pressure gauge; 309. Second solenoid gas supply valve; 310. Second pressure regulating valve; 311. High-pressure outlet pressure gauge; 312. High-pressure outlet flow meter; 313. Second vent pipe; 314. Second solenoid vent valve; 315. Second pressure stabilizing tank; 316. Fifth filter; 317. Return pipe; 318. Third pressure gauge; 4. Low-pressure gas engine; 5. High-pressure gas engine. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] Example 1:

[0031] This invention provides a high and low pressure regulation system for a gas engine, referring to... Figure 1 and Figure 2 As shown, the high and low pressure regulation system for the gas engine includes an intake pipeline device 1, a low-pressure gas pipeline device 2, and a high-pressure gas pipeline device 3.

[0032] The air intake pipeline device 1 includes an air intake pipe 101, the air intake end of which is connected to a municipal gas pipeline, and the air outlet end of the air intake pipe 101 is connected to a first air intake branch pipe 102 and a second air intake branch pipe 103 arranged in parallel.

[0033] The first intake branch pipe 102 is connected to the intake end of the low-pressure gas pipeline device 2, and the outlet end of the low-pressure gas pipeline device 2 is used to connect to the low-pressure gas engine 4.

[0034] The second intake branch pipe 103 is connected to the intake end of the high-pressure gas pipeline device 3, and the outlet end of the high-pressure gas pipeline device 3 is used to connect to the high-pressure gas engine 5.

[0035] Land-based gas engines are mostly low-pressure gas engines. When supplying gas to them, the outlet end of the low-pressure gas pipeline device 2 is connected to the land-based gas engine. The gas enters the low-pressure gas pipeline device 2 through the intake pipe 101 and the first intake branch pipe 102 in sequence. The low-pressure gas pipeline device 2 reduces the gas pressure to adapt it to the land-based gas engine.

[0036] Marine multi-point injection gas engines are mostly high-pressure gas engines. When supplying gas to them, the outlet end of the high-pressure gas pipeline device 3 is connected to the marine multi-point injection gas engine. The gas enters the high-pressure gas pipeline device 3 through the intake pipe 101 and the second intake branch pipe 103 in sequence. The high-pressure gas pipeline device 3 increases the gas pressure to adapt it to the marine multi-point injection gas engine.

[0037] This invention can effectively transport municipal gas to low-pressure gas pipeline device 2 and high-pressure gas pipeline device 3 through the intake pipeline device 1. The low-pressure gas pipeline device 2 can reduce the gas pressure to adapt it to the corresponding low-pressure gas engine, and the high-pressure gas pipeline device 3 can increase the gas pressure to adapt it to the corresponding high-pressure gas engine. Not only is the gas pressure regulation effect significant, but it also has a wide range of applications.

[0038] Example 2:

[0039] Example 2 is based on Example 1:

[0040] like Figure 1 and Figure 2 As shown, an intake filter 105 and an intake flow meter 106 are sequentially installed on the first intake branch pipe 102 and the second intake branch pipe 103 along the gas flow direction.

[0041] The intake filter 105 is a primary filter that performs preliminary filtration of municipal gas, and the intake flow meter 106 is used to detect the intake flow rate.

[0042] As an optional implementation, such as Figure 1 and Figure 2As shown, valves 104 are provided on both the first intake branch pipe 102 and the second intake branch pipe 103. The valves 104 are used for on / off control of the corresponding pipes. The valves 104 can be manual valves.

[0043] When supplying gas to the low-pressure gas engine 4 alone, the valve 104 on the first intake branch pipe 102 is opened, and the first intake branch pipe 102 is connected; the valve 104 on the second intake branch pipe 103 is closed, and the second intake branch pipe 103 is disconnected.

[0044] When supplying gas to the high-pressure gas engine 5 alone, valve 104 on the second intake branch pipe 103 is opened and valve 104 on the first intake branch pipe 102 is closed.

[0045] When supplying gas to both the low-pressure gas engine 4 and the high-pressure gas engine 5, valves 104 on the first intake branch pipe 102 and the second intake branch pipe 103 are both opened.

[0046] The intake pipe device 1 can realize the switching control of the pipe, making the system more flexible in use.

[0047] As an optional implementation, such as Figure 1 and Figure 2 As shown, the intake pipe device 1 includes a branch pipe 107. One end of the branch pipe 107 is connected to the outlet end of the first intake branch pipe 102, and the other end of the branch pipe 107 is connected to the outlet end of the second intake branch pipe 103. A valve 104 is provided on the branch pipe 107.

[0048] The branch pipe 107 enables the first intake branch pipe 102 to supply air to the high-pressure gas engine 5 and the second intake branch pipe 103 to supply air to the low-pressure gas engine 4. In this way, the first intake branch pipe 102 and the second intake branch pipe 103 serve as backups for each other. In actual use, if the instruments on the first intake branch pipe 102 or the instruments on the second intake branch pipe 103 malfunction, the system can continue to operate without stopping by opening and closing the corresponding valves, making the air supply more stable.

[0049] As an optional implementation, such as Figure 3 As shown, the low-pressure gas pipeline device 2 includes a low-pressure gas transmission pipeline 201. The inlet end of the low-pressure gas transmission pipeline 201 is connected to the outlet end of the first inlet branch pipe 102. The outlet end of the low-pressure gas transmission pipeline 201 is used to connect to the low-pressure gas engine 4.

[0050] A first filter 202, a first electromagnetic gas supply valve 203, an electromagnetic slow-opening valve 204, a first pressure gauge 205, a first pressure regulating valve 206, a low-pressure gas outlet pressure gauge 207, and a low-pressure gas outlet flow meter 208 are sequentially arranged along the gas flow direction on the low-pressure gas transmission pipeline 201. A first vent pipe 209 is connected to the low-pressure gas transmission pipeline 201 at the position between the first electromagnetic gas supply valve 203 and the electromagnetic slow-opening valve 204. A first electromagnetic vent valve 210 is arranged on the first vent pipe 209.

[0051] During the process of supplying gas to the low-pressure gas engine 4, the first filter 202 performs secondary filtration of the gas. The first electromagnetic gas supply valve 203, the first pressure regulating valve 206, and the first electromagnetic venting valve 210 work together to reduce the gas pressure. The first electromagnetic venting valve 210 is for coarse adjustment, the first pressure regulating valve 206 is for fine adjustment, and the electromagnetic slow-opening valve 204 opens slowly during operation to avoid excessive impact. The first pressure gauge 205 and the low-pressure outlet pressure gauge 207 work together to detect the pressure in real time to ensure the gas pressure reduction effect. The low-pressure outlet flow meter 208 is used to detect the gas flow after pressure reduction.

[0052] As an optional implementation, such as Figure 3 As shown, the low-pressure gas pipeline device 2 includes an electromagnetic emergency shut-off valve 211, which is installed on the low-pressure gas transmission pipeline 201 and is located between the first filter 202 and the first electromagnetic gas supply valve 203.

[0053] When a sudden abnormality occurs in the gas supply, the low-pressure gas transmission pipeline 201 can react immediately to prevent accidents from happening.

[0054] As an optional implementation, such as Figure 3 As shown, the low-pressure gas pipeline device 2 includes a flame arrester 212. The flame arrester 212 is installed on the low-pressure gas transmission pipeline 201 and is located upstream of the first filter 202. The flame arrester 212 can prevent gas backfire and eliminate safety hazards.

[0055] As an optional implementation, such as Figure 4 As shown, the high-pressure gas pipeline device 3 includes a high-pressure gas transmission pipeline 301. The inlet end of the high-pressure gas transmission pipeline 301 is connected to the outlet end of the second inlet branch pipe 103. The outlet end of the high-pressure gas transmission pipeline 301 is used to connect to the high-pressure gas engine 5.

[0056] Along the gas flow direction, the high-pressure gas transmission pipeline 301 is sequentially equipped with a first pressure stabilizing tank 302, a second filter 303, a compressor 304, a third filter 305, a one-way valve 306, a pressure stabilizing filter group, a fourth filter 307, a second pressure gauge 308, a second electromagnetic gas supply valve 309, a second pressure regulating valve 310, a high-pressure gas outlet pressure gauge 311, and a high-pressure gas outlet flow meter 312. A second vent pipe 313 is connected to the high-pressure gas transmission pipeline 301 between the second electromagnetic gas supply valve 309 and the second pressure regulating valve 310. A second electromagnetic vent valve 314 is installed on the second vent pipe 313.

[0057] During the process of supplying gas to the high-pressure gas engine 5, the second filter 303, the third filter 305, and the fourth filter 307 operate, combining coarse and fine filtration for significant filtration effect. The first pressure stabilizing tank 302 is used to stabilize the gas pressure, the compressor 304 provides the power for gas supply, and the one-way valve 306 ensures that the gas can only flow in one direction, preventing backflow of gas from the pressure stabilizing filter group. The pressure stabilizing filter group has both a pressure stabilizing and filtration function and can store gas. The second electromagnetic gas supply valve 309, the second pressure regulating valve 310, and the second electromagnetic venting valve 314 work with the pressure stabilizing tank to increase the gas pressure. The second pressure gauge 308 and the high-pressure outlet pressure gauge 311 work together to detect the pressure in real time to ensure the gas pressure increase effect. The high-pressure outlet flow meter 312 is used to detect the gas flow rate after pressure increase.

[0058] As an optional implementation, such as Figure 4 As shown, the pressure-stabilizing filter group includes a pressure-stabilizing tank group and a filter group connected in sequence.

[0059] The pressure stabilizing tank group includes multiple second pressure stabilizing tanks 315 arranged in parallel, and each parallel pressure stabilizing branch is equipped with a valve.

[0060] The filter group includes multiple fifth filters 316 arranged in parallel, and each parallel filter branch is equipped with a valve.

[0061] Thus, on the one hand, multiple parallel second pressure stabilizing tanks 315 serve as backups for each other, and multiple parallel fifth filters 316 serve as backups for each other. On the other hand, in actual use, the second pressure stabilizing tanks 315 can work independently or multiple tanks can work simultaneously. In addition to stabilizing the pressure, they can store gas. When a fault occurs upstream, the gas stored in the second pressure stabilizing tanks 315 can be used to boost the gas supply to the high-pressure gas engine 5 without stopping the engine.

[0062] As an optional implementation, such as Figure 4As shown, a return pipe 317 is connected to the second vent pipe 313 downstream of the second electromagnetic vent valve 314. A valve is installed on the return pipe 317. The return end of the return pipe 317 is connected to the high-pressure gas transmission pipeline 301. Downstream of the second pressure regulating valve 310, a third pressure gauge 318 is installed on the high-pressure gas transmission pipeline 301 between the second pressure regulating valve 310 and the high-pressure outlet pressure gauge 311.

[0063] The reflux pipe 317 is designed to allow for the return of vented gas as needed during actual use, thereby improving gas utilization.

[0064] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high and low pressure regulation system for a gas engine, characterized in that, This includes an intake piping system, a low-pressure gas piping system, and a high-pressure gas piping system, wherein: The air intake pipeline device includes an air intake pipe, the air intake end of which is connected to a municipal gas pipeline, and the air outlet end of which is connected to a first air intake branch pipe and a second air intake branch pipe arranged in parallel. The first intake branch pipe is connected to the intake end of the low-pressure gas pipeline device, and the outlet end of the low-pressure gas pipeline device is used to connect to the low-pressure gas engine. The second intake branch pipe is connected to the intake end of the high-pressure gas pipeline device, and the outlet end of the high-pressure gas pipeline device is used to connect to the high-pressure gas engine. The low-pressure gas pipeline device includes a low-pressure gas transmission pipeline, and a first pressure regulating valve is installed on the low-pressure gas transmission pipeline. The high-pressure gas pipeline device includes a high-pressure gas transmission pipeline, and a compressor is installed on the high-pressure gas transmission pipeline. The intake pipe device includes a branch pipe, one end of which is connected to the outlet end of the first intake branch pipe, and the other end of which is connected to the outlet end of the second intake branch pipe. A valve is installed on the branch pipe.

2. The high and low pressure regulation system for a gas engine according to claim 1, characterized in that, Both the first and second intake branches are equipped with an intake filter and an intake flow meter in sequence along the gas flow direction.

3. The high and low pressure regulation system for a gas engine according to claim 1, characterized in that, Both the first intake branch pipe and the second intake branch pipe are equipped with valves.

4. The high and low pressure regulation system for a gas engine according to claim 1, characterized in that, The inlet end of the low-pressure gas transmission pipeline is connected to the outlet end of the first inlet branch pipe, and the outlet end of the low-pressure gas transmission pipeline is used to connect to the low-pressure gas engine. The low-pressure gas transmission pipeline is provided with a first filter, a first electromagnetic gas supply valve, an electromagnetic slow-opening valve, a first pressure gauge, a first pressure regulating valve, a low-pressure gas outlet pressure gauge, and a low-pressure gas outlet flow meter in sequence along the gas flow direction. A first vent pipe is connected to the low-pressure gas transmission pipeline at a position between the first electromagnetic gas supply valve and the electromagnetic slow-opening valve, and a first electromagnetic vent valve is provided on the first vent pipe.

5. The high and low pressure regulation system for a gas engine according to claim 4, characterized in that, The low-pressure gas pipeline device includes an electromagnetic emergency shut-off valve, which is installed on the low-pressure gas transmission pipeline.

6. The high and low pressure regulation system for a gas engine according to claim 4, characterized in that, The low-pressure gas pipeline device includes a flame arrester, which is installed on the low-pressure gas delivery pipeline and located upstream of the first filter.

7. The high and low pressure regulation system for a gas engine according to claim 1, characterized in that, The inlet end of the high-pressure gas transmission pipeline is connected to the outlet end of the second inlet branch pipe, and the outlet end of the high-pressure gas transmission pipeline is used to connect to the high-pressure gas engine. The high-pressure gas transmission pipeline is sequentially equipped with a first pressure stabilizing tank, a second filter, a compressor, a third filter, a one-way valve, a pressure stabilizing filter group, a fourth filter, a second pressure gauge, a second electromagnetic gas supply valve, a second pressure regulating valve, a high-pressure gas outlet pressure gauge, and a high-pressure gas outlet flow meter along the gas flow direction. A second vent pipe is connected to the high-pressure gas transmission pipeline between the second electromagnetic gas supply valve and the second pressure regulating valve, and a second electromagnetic vent valve is installed on the second vent pipe.

8. The high and low pressure regulation system for a gas engine according to claim 7, characterized in that, The pressure-stabilizing filter assembly includes a pressure-stabilizing tank assembly and a filter assembly connected in sequence, wherein: The pressure stabilizing tank group includes multiple second pressure stabilizing tanks arranged in parallel; The filter group includes multiple fifth filters arranged in parallel.

9. The high and low pressure regulation system for a gas engine according to claim 7, characterized in that, A return pipe is connected to the second vent pipe downstream of the second electromagnetic vent valve. The return end of the return pipe is connected to the high-pressure gas transmission pipeline and is located downstream of the second pressure regulating valve. A third pressure gauge is installed on the high-pressure gas transmission pipeline between the second pressure regulating valve and the high-pressure outlet pressure gauge.

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