A compressed natural gas supply device, method, medium and equipment for an engine test bench

Abstract

The present application provides an engine test bench compressed natural gas supply device, method, medium and equipment. By setting multiple gas cylinder groups, engine gas supply devices, pressure regulating valves, first pressure sensors, pressure relief valves and controllers, the engine gas supply device supplies gas to the natural gas engine, the pressure regulating valve stably outputs the natural gas pressure to the engine gas supply device, the first pressure sensor monitors the natural gas pressure output to the pressure regulating valve, the pressure relief valve releases excess natural gas pressure, the controller controls the gas cylinder group valve, the gas cylinder valve and the pressure relief valve to perform actions according to the natural gas pressure values ​​monitored by the gas cylinder group pressure sensor and the first pressure sensor, thereby improving the efficiency of the test bench, and obtaining the output natural gas pressure in real time and ensuring the output natural gas pressure, so as to improve the accuracy of the test bench, and the pressure relief valve can also be used to release excess pressure when the pressure is abnormal, so as to ensure the safety of the gas supply device.

Description

Technical Field

[0001] The present application relates to the technical field, and in particular to a compressed natural gas supply device, method, medium and equipment for an engine test bench. Background Art

[0002] With the increasing attention paid to environmental issues, the development of new energy vehicles is also accelerating. Compressed natural gas (CNG), as a clean and efficient alternative fuel, has been widely used in the field of transportation. In the development and testing process of natural gas engines, bench testing is an indispensable part. Traditional engine bench test devices have many shortcomings in natural gas supply, such as unstable gas supply pressure, inadequate monitoring of gas cylinder pressure, and insufficient safety monitoring. These problems directly affect the accuracy and reliability of the test results. Therefore, it is necessary to develop a stable and safe engine bench compressed natural gas supply device. Summary of the invention

[0003] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a compressed natural gas supply device, method, medium and equipment for an engine test bench.

[0004] According to one aspect of the present application, there is provided an engine test bench compressed natural gas supply device, comprising: a plurality of gas cylinder groups, each of the gas cylinder groups comprising a plurality of gas cylinders, each of the gas cylinders storing compressed natural gas required for natural gas engine testing, a gas cylinder group valve and a gas cylinder group pressure sensor respectively arranged at each of the gas cylinders, and a gas cylinder valve respectively arranged at each of the gas cylinders; an engine gas supply device, the engine gas supply device connecting the gas cylinder group and the natural gas engine, for supplying gas to the natural gas engine; a pressure regulating valve, the pressure regulating valve being arranged between the gas cylinder group and the engine gas supply device, for stabilizing the output to the natural gas engine; the natural gas pressure of the engine air supply device; a first pressure sensor, the first pressure sensor is arranged between the gas cylinder group and the pressure stabilizing valve, and is used to monitor the natural gas pressure output to the pressure stabilizing valve; a pressure relief valve, the pressure relief valve and the pressure stabilizing valve are arranged in parallel, and are used to release excess natural gas pressure; a controller, the controller is connected to the gas cylinder group valve, the gas cylinder valve, the gas cylinder group pressure sensor, the first pressure sensor, and the pressure relief valve, and is used to control the gas cylinder group valve, the gas cylinder valve, and the pressure relief valve to perform actions according to the natural gas pressure values ​​monitored by the gas cylinder group pressure sensor and the first pressure sensor.

[0005] In one embodiment, the engine stand compressed natural gas supply device further comprises: a gas consumption meter, which is arranged between the engine supply device and the pressure regulating valve and is used to measure the natural gas consumption output to the natural gas engine.

[0006] In one embodiment, the engine stand compressed natural gas supply device further includes: a first gas sensor, which is arranged at the gas supply pipeline of the natural gas engine and is used to monitor natural gas leakage in the gas supply pipeline of the natural gas engine.

[0007] In one embodiment, the engine stand compressed natural gas supply device further includes: a second gas sensor, which is disposed at the gas cylinder group and is used to monitor natural gas leakage from the gas cylinder group.

[0008] In one embodiment, the engine stand compressed natural gas supply device further comprises: an indicator light, which is connected to the controller and is used to receive a control instruction from the controller and light up a corresponding color to display the working status of the engine stand compressed natural gas supply device.

[0009] In one embodiment, the engine stand compressed natural gas supply device further includes: a fan, wherein the fan is disposed at the gas cylinder group and is used to dissipate heat from the gas cylinder group.

[0010] In one embodiment, the engine test bench compressed natural gas supply device also includes: a throttle valve and a second pressure sensor, wherein the throttle valve is arranged between the gas cylinder group and the first pressure sensor, and is used to control the natural gas pressure output to the pressure regulating valve; the second pressure sensor is arranged between the gas cylinder group and the throttle valve, and is used to monitor the natural gas pressure output by the gas cylinder group.

[0011] According to another aspect of the present application, a method for supplying compressed natural gas to an engine test bench is provided, which is applied to any of the compressed natural gas supply devices for an engine test bench described above, and the method for supplying compressed natural gas to an engine test bench comprises: obtaining monitoring data collected by a monitoring component; wherein the monitoring component comprises the gas cylinder group pressure sensor and the first pressure sensor; and controlling an execution component to perform an action according to the monitoring data; wherein the execution component comprises the gas cylinder group valve, the gas cylinder valve and the pressure relief valve.

[0012] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute the above method.

[0013] According to another aspect of the present application, an electronic device is provided, comprising: a processor; a memory for storing instructions executable by the processor; and the processor is used to execute the above method.

[0014] The present application provides an engine test bench compressed natural gas supply device, method, medium and equipment, which are provided by setting multiple gas cylinder groups, engine gas supply devices, pressure regulating valves, first pressure sensors, pressure relief valves and controllers. Each gas cylinder group includes multiple gas cylinders, each gas cylinder stores compressed natural gas required for natural gas engine testing, and each gas cylinder group is provided with a gas cylinder group valve and a gas cylinder group pressure sensor. Each gas cylinder is provided with a gas cylinder valve. The engine gas supply device connects the gas cylinder group and the natural gas engine to supply gas to the natural gas engine. The pressure regulating valve is provided between the gas cylinder group and the engine gas supply device to stabilize the natural gas pressure output to the engine gas supply device. The first pressure sensor is provided between the gas cylinder group and the pressure regulating valve to monitor the natural gas pressure output to the pressure regulating valve. The pressure relief valve and the pressure regulating valve are provided in parallel. , used to release excess natural gas pressure, the controller is connected to the gas cylinder group valve, the gas cylinder valve, the gas cylinder group pressure sensor, the first pressure sensor, and the pressure relief valve, and is used to control the gas cylinder group valve, the gas cylinder valve and the pressure relief valve to perform actions according to the natural gas pressure value monitored by the gas cylinder group pressure sensor and the first pressure sensor; that is, the gas cylinder group is used to supply gas to multiple gas cylinders to ensure the gas supply pressure, and also avoid problems such as test interruption caused by frequent better gas cylinders, thereby improving the efficiency of the bench test, and using the gas cylinder group pressure sensor and the first pressure sensor to monitor the natural gas pressure value to obtain the output natural gas pressure in real time, and at the same time, by controlling the gas cylinder group valve and the gas cylinder valve to ensure the pressure of the output natural gas, so as to improve the accuracy of the bench test, and the pressure relief valve can also be used to release excess pressure when the pressure is abnormal to ensure the safety of the gas supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 It is a schematic structural diagram of a compressed natural gas supply device for an engine stand provided by an exemplary embodiment of the present application.

[0017] Figure 2 It is a flow chart of a method for supplying compressed natural gas to an engine test bench provided by an exemplary embodiment of the present application.

[0018] Figure 3 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. gas cylinder group; 2. engine air supply device; 3. pressure regulating valve; 4. first pressure sensor; 5. pressure relief valve; 6. controller; 7. gas cylinder group valve; 8. gas cylinder group pressure sensor; 9. gas cylinder valve; 10. gas consumption meter; 11. first gas sensitive sensor; 12. second gas sensitive sensor; 13. storage chamber; 14. indicator light; 15. fan; 16. throttle valve; 17. second pressure sensor; 18. first valve; 19. second valve; 20. third valve; 21. grounding wire; 22. grounding point; 23. universal wheel; 100. electronic device; 101. processor; 102. memory; 103. input device; 104. output device. DETAILED DESCRIPTION

[0020] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0021] Figure 1 1 is a schematic diagram of the structure of a compressed natural gas supply device for an engine stand provided by an exemplary embodiment of the present application. Figure 1 As shown, the compressed natural gas supply device for the engine test bench includes: multiple gas cylinder groups 1, an engine gas supply device 2, a pressure regulating valve 3, a first pressure sensor 4, a pressure relief valve 5, and a controller 6. Each gas cylinder group 1 includes multiple gas cylinders, each gas cylinder stores compressed natural gas required for natural gas engine testing, each gas cylinder group 1 is respectively provided with a gas cylinder group valve 7 and a gas cylinder group pressure sensor 8, each gas cylinder is respectively provided with a gas cylinder valve 9, the engine gas supply device 2 is connected to the gas cylinder group 1 and the natural gas engine for supplying gas to the natural gas engine, and the pressure regulating valve 3 is provided between the gas cylinder group 1 and the engine The gas supply device 2 is used to stabilize the natural gas pressure output to the engine gas supply device 2. The first pressure sensor 4 is arranged between the gas cylinder group 1 and the pressure regulating valve 3, and is used to monitor the natural gas pressure output to the pressure regulating valve 3. The pressure relief valve 5 and the pressure regulating valve 3 are arranged in parallel to release excess natural gas pressure. The controller 6 is connected with the gas cylinder group valve 7, the gas cylinder valve 9, the gas cylinder group pressure sensor 8, the first pressure sensor 4, and the pressure relief valve 5, and is used to control the gas cylinder group valve 7, the gas cylinder valve 9 and the pressure relief valve 5 to perform actions according to the natural gas pressure values ​​monitored by the gas cylinder group pressure sensor 8 and the first pressure sensor 4.

[0022] The present application adopts a structure of multiple gas cylinder groups 1 to store compressed natural gas, wherein each gas cylinder group 1 includes multiple gas cylinders. Multiple gas cylinders are used to store compressed natural gas, and combined with the opening and closing of the gas cylinder group valve 7 of each gas cylinder group 1 and the gas cylinder valve 9 of each gas cylinder, different gas cylinders or gas cylinder groups can be selected and combined according to the actual test needs to obtain a gas supply method that meets the actual test needs. Natural gas is output from a gas cylinder and supplied to the engine via a pressure-stabilizing valve 3 and an engine gas supply device 2 to realize the test gas supply of the engine, and a gas cylinder group pressure sensor 8 and a first pressure sensor 4 are arranged in the gas supply path to monitor the natural gas pressure in the gas supply path in real time, and at the same time, a gas cylinder valve 9 and a gas cylinder group valve 7 are arranged in the gas supply path to control the gas supply pressure of the natural gas to realize closed-loop regulation of the engine gas supply, and the pressure-stabilizing valve 3 is combined to ensure that the pressure of the natural gas output to the natural gas engine is stable, thereby improving the test accuracy; and a pressure relief valve 5 is arranged in parallel with the engine gas supply device 2 to release excess pressure when the pressure in the gas supply path is too high to ensure the safety of the entire gas supply device; at the same time, the present application also uses a controller 6 to comprehensively adjust the opening or closing, as well as the opening degree of each valve according to the pressure values ​​collected by each sensor, thereby realizing stable gas supply output and automatic gas supply of natural gas, thereby reducing human participation.

[0023] The present application provides a compressed natural gas supply device for an engine test bench, which is provided with multiple gas cylinder groups, an engine gas supply device, a pressure regulating valve, a first pressure sensor, a pressure relief valve, and a controller. Each gas cylinder group includes multiple gas cylinders, each gas cylinder stores compressed natural gas required for natural gas engine testing, and each gas cylinder group is provided with a gas cylinder group valve and a gas cylinder group pressure sensor. Each gas cylinder is provided with a gas cylinder valve. The engine gas supply device connects the gas cylinder group and the natural gas engine to supply gas to the natural gas engine. The pressure regulating valve is provided between the gas cylinder group and the engine gas supply device to stabilize the natural gas pressure output to the engine gas supply device. The first pressure sensor is provided between the gas cylinder group and the pressure regulating valve to monitor the natural gas pressure output to the pressure regulating valve. The pressure relief valve and the pressure regulating valve are provided in parallel to release the natural gas. To release excess natural gas pressure, the controller is connected to the gas cylinder group valve, the gas cylinder valve, the gas cylinder group pressure sensor, the first pressure sensor, and the pressure relief valve, and is used to control the gas cylinder group valve, the gas cylinder valve and the pressure relief valve to perform actions according to the natural gas pressure value monitored by the gas cylinder group pressure sensor and the first pressure sensor; that is, the gas cylinder group is used to realize gas supply from multiple gas cylinders to ensure the gas supply pressure, and also avoid problems such as test interruption caused by frequent replacement of gas cylinders, thereby improving the efficiency of the bench test, and the gas cylinder group pressure sensor and the first pressure sensor are used to monitor the natural gas pressure value to obtain the output natural gas pressure in real time, and at the same time, the gas cylinder group valve and the gas cylinder valve are controlled to ensure the output natural gas pressure, so as to improve the accuracy of the bench test, and the pressure relief valve can also be used to release excess pressure when the pressure is abnormal to ensure the safety of the gas supply device.

[0024] In one embodiment, if Figure 1 As shown, the above-mentioned engine test bench compressed natural gas supply device can also include: a gas consumption meter 10, which is arranged between the engine gas supply device 2 and the pressure regulating valve 3, and is used to measure the natural gas consumption output to the natural gas engine.

[0025] The present application sets a gas consumption meter 10 between the engine air supply device 2 and the pressure regulating valve 3 to monitor the natural gas flow rate flowing through the gas consumption meter 10 in real time during the test, and then calculates the natural gas consumption output to the natural gas engine, thereby providing an accurate measurement value of the natural gas consumption for the test of the natural gas engine.

[0026] In one embodiment, if Figure 1 As shown, the above-mentioned engine stand compressed natural gas supply device may also include: a first gas sensor 11, which is arranged at the gas supply pipeline of the natural gas engine and is used to monitor the natural gas leakage in the gas supply pipeline of the natural gas engine.

[0027] The present application sets a first gas sensitive sensor 11 near the gas supply pipeline of the natural gas engine to monitor the natural gas leakage in the gas supply pipeline of the natural gas engine during the test process. If natural gas leakage is detected, an alarm is immediately issued and a leakage signal is sent to the controller 6. The controller 6 controls the corresponding valve to close to prevent further leakage of natural gas.

[0028] In one embodiment, if Figure 1 As shown, the above-mentioned engine stand compressed natural gas supply device may also include: a second gas sensor 12, which is arranged at the gas cylinder group 1 and is used to monitor the natural gas leakage of the gas cylinder group 1.

[0029] The present application sets a second gas sensor 12 near the gas cylinder group 1 to monitor the natural gas leakage of the gas cylinder group 1 during the test process. If a natural gas leakage is detected, an alarm is immediately issued and a leakage signal is sent to the controller 6, and the controller 6 controls the corresponding valve to close to prevent further leakage of natural gas. Specifically, the present application sets multiple gas cylinder groups 1 in a storage room 13 to isolate open flames and other heat sources, avoid direct sunlight and rain, and sets the second gas sensor 12 in the storage room 13 to monitor whether there is a natural gas leakage in the storage room 13, so as to determine whether there is a natural gas leakage in the gas cylinder group 1.

[0030] In one embodiment, if Figure 1As shown, the above-mentioned engine stand compressed natural gas supply device may also include: an indicator light 14, which is connected to the controller 6 and is used to receive a control instruction from the controller 6 to light up a corresponding color to display the working status of the engine stand compressed natural gas supply device.

[0031] The present application sets an indicator light 14 to display the working status of the engine test bench compressed natural gas supply device. For example, a green light is lit when it is working normally, and a red light flashes when it is working abnormally (such as natural gas leakage, insufficient pressure, etc.), so that the operator can know the working status of the engine test bench compressed natural gas supply device in real time.

[0032] In one embodiment, if Figure 1 As shown, the above-mentioned engine stand compressed natural gas supply device can also include: a fan 15, which is arranged at the gas cylinder group 1 and is used to dissipate heat from the gas cylinder group 1.

[0033] The present application dissipates heat and ventilation for the storage chamber 13 by arranging a fan 15 in the storage chamber 13 , thereby achieving heat dissipation and ventilation for the gas cylinder group 1 in the storage chamber 13 , thereby ensuring that the gas cylinder group 1 works in a better environment, thereby improving the safety of the gas cylinder group 1 .

[0034] In one embodiment, if Figure 1 As shown, the above-mentioned engine test bench compressed natural gas supply device may also include: a throttle valve 16 and a second pressure sensor 17. The throttle valve 16 is arranged between the gas cylinder group 1 and the first pressure sensor 4, and is used to control the natural gas pressure output to the pressure regulating valve 3. The second pressure sensor 17 is arranged between the gas cylinder group 1 and the throttle valve 16, and is used to monitor the natural gas pressure output by the gas cylinder group 1.

[0035] The present application provides a throttle valve 16 between the gas cylinder group 1 and the first pressure sensor 4 to achieve throttling control of the natural gas output from the gas cylinder group 1, thereby achieving pressure regulation of the natural gas pipeline to meet the gas supply pressure requirement.

[0036] In one embodiment, if Figure 1 As shown, the above-mentioned engine test bench compressed natural gas supply device may also include: a first valve 18, the first valve 18 is arranged between the first pressure sensor 4 and the pressure regulating valve 3, and is used to adjust the natural gas pressure output to the pressure regulating valve 3. The first valve 18 is connected to the controller 6, and is automatically opened or closed according to the instruction of the controller 6 to realize remote control or automatic control of the supply and stop of natural gas, thereby improving the convenience of operation.

[0037] In one embodiment, if Figure 1As shown, the above-mentioned engine test bench compressed natural gas supply device can also include: a second valve 19, the second valve 19 is arranged between the first pressure sensor 4 and the pressure relief valve 5, and is used to control the natural gas pressure output to the pressure relief valve 5. Under normal circumstances, the second valve 19 can be set to a normally open state, and the pressure relief valve 5 is used to realize pipeline pressure relief.

[0038] In one embodiment, if Figure 1 As shown, the above-mentioned engine test bench compressed natural gas supply device may also include: a third valve 20, the third valve 20 is connected to the gas cylinder group 1 and is far away from the engine gas supply device 2, and is used to empty the residual gas in the pipeline after the test is completed.

[0039] In one embodiment, if Figure 1 As shown, the above-mentioned engine stand compressed natural gas supply device may also include: a grounding wire 21 and a grounding point 22, the grounding wire 21 connects the gas supply pipeline to the grounding point 22 to ensure the electrical safety of the gas supply device and prevent static electricity accumulation from causing fire or explosion.

[0040] In one embodiment, if Figure 1 As shown, the above-mentioned engine test bench compressed natural gas supply device can also include: a universal wheel 23, which is arranged at the bottom of the gas cylinder group 1, for realizing the movement of the gas cylinder group 1, and the universal wheel 23 has a self-locking function to ensure that the gas cylinder group 1 is stable and motionless during the test.

[0041] Figure 2 : is a flow chart of a method for supplying compressed natural gas to an engine rig provided by an exemplary embodiment of the present application. The method for supplying compressed natural gas to an engine rig is applied to any of the above-mentioned compressed natural gas supply devices for an engine rig. Specifically, the method for supplying compressed natural gas to an engine rig is applied to the above-mentioned controller, such as Figure 2 As shown, the engine bench compressed natural gas supply method includes the following steps:

[0042] Step 210: Acquire monitoring data collected by the monitoring component.

[0043] The monitoring component includes a gas cylinder group pressure sensor and a first pressure sensor. The present application uses the gas cylinder group pressure sensor and the first pressure sensor to collect the output natural gas pressure value of the gas cylinder group and the natural gas pressure sensor on the gas supply pipeline in real time during the test process to obtain the gas supply situation in the gas supply pipeline.

[0044] Step 220: Control the execution component to perform actions according to the monitoring data.

[0045] The actuators include the gas cylinder group valve, the gas cylinder valve and the pressure relief valve. This application controls the actuators (each valve) through a controller, controls the opening of each valve according to the monitoring data, thereby realizing the closed-loop gas supply to the natural gas engine, so as to stably output natural gas to the natural gas engine, ensure the automatic realization of the test, and ensure the accuracy of the test.

[0046] The present application provides a method for supplying compressed natural gas to an engine test bench, which comprises setting a plurality of gas cylinder groups, an engine gas supply device, a pressure regulating valve, a first pressure sensor, a pressure relief valve, and a controller. Each gas cylinder group comprises a plurality of gas cylinders, each gas cylinder stores compressed natural gas required for natural gas engine testing, a gas cylinder group valve and a gas cylinder group pressure sensor are respectively set at each gas cylinder group, a gas cylinder valve is respectively set at each gas cylinder, the engine gas supply device connects the gas cylinder group and the natural gas engine for supplying gas to the natural gas engine, the pressure regulating valve is set between the gas cylinder group and the engine gas supply device for stabilizing the natural gas pressure output to the engine gas supply device, the first pressure sensor is set between the gas cylinder group and the pressure regulating valve for monitoring the natural gas pressure output to the pressure regulating valve, the pressure relief valve and the pressure regulating valve are set in parallel for releasing the compressed natural gas. To release excess natural gas pressure, the controller is connected to the gas cylinder group valve, the gas cylinder valve, the gas cylinder group pressure sensor, the first pressure sensor, and the pressure relief valve, and is used to control the gas cylinder group valve, the gas cylinder valve and the pressure relief valve to perform actions according to the natural gas pressure value monitored by the gas cylinder group pressure sensor and the first pressure sensor; that is, the gas cylinder group is used to realize gas supply from multiple gas cylinders to ensure the gas supply pressure, and also avoid problems such as test interruption caused by frequent replacement of gas cylinders, thereby improving the efficiency of the bench test, and the gas cylinder group pressure sensor and the first pressure sensor are used to monitor the natural gas pressure value to obtain the output natural gas pressure in real time, and at the same time, the gas cylinder group valve and the gas cylinder valve are controlled to ensure the output natural gas pressure, so as to improve the accuracy of the bench test, and the pressure relief valve can also be used to release excess pressure when the pressure is abnormal to ensure the safety of the gas supply device.

[0047] Optionally, when conducting a natural gas engine test, the present application obtains the natural gas demand (reflected in natural gas pressure) of the natural gas engine, and opens the least number of gas cylinders in gas cylinder group 1 in sequence according to the natural gas demand to supply gas to the natural gas engine. For example, if the natural gas demand of the natural gas engine is less than the natural gas pressure that can be provided by a single gas cylinder when it is full, then open a gas cylinder (can be in a predetermined order). If the gas cylinder alone cannot meet the demand of the natural gas engine, then close the gas cylinder and open the next gas cylinder until there is a gas cylinder that can provide the natural gas pressure required by the natural gas engine alone. If all gas cylinders cannot provide the natural gas pressure required by the natural gas engine alone, that is, all gas cylinders are not full, then two gas cylinders can be opened in a predetermined order, and so on. If opening all gas cylinders at the same time still cannot meet the current demand of the natural gas engine, then close the gas cylinder valves of all gas cylinders, and replenish natural gas or replace gas cylinders for all gas cylinders. Preferably, before testing, the present application can also sequentially open the gas cylinder valve corresponding to a single gas cylinder and close the gas cylinder group valve where the gas cylinder is located, so as to use the gas cylinder group pressure sensor to measure the natural gas pressure that each gas cylinder can provide, thereby quickly determining the minimum number of gas cylinder combinations based on the natural gas demand of the natural gas engine.

[0048] Optionally, when the present application detects a leak in the gas supply pipeline, the gas cylinder valve and the valve of the corresponding branch are closed. For example, if there is a leak in the branch composed of the engine gas supply device 2, the gas consumption meter 10 and the pressure regulating valve 3, the gas cylinder valve 9 and the first valve 18 are closed, and the third valve 20 is opened synchronously to discharge the natural gas in the gas supply pipeline.

[0049] Optionally, the present application controls the opening of the gas cylinder group valve 7, the throttle valve 16 and the first valve 18 to control the difference between the pressure values ​​collected by the gas cylinder group pressure sensor 8 and the second pressure sensor 17, and the difference between the pressure values ​​collected by the second pressure sensor 17 and the first pressure sensor 4 to be less than a preset pressure difference threshold, so as to reduce the pressure difference at the gas cylinder group valve 7 and the throttle valve 16, thereby protecting the gas cylinder group valve 7 and the throttle valve 16. Preferably, the present application can set the difference between the pressure values ​​collected by the gas cylinder group pressure sensor 8 and the second pressure sensor 17, and the difference between the pressure values ​​collected by the second pressure sensor 17 and the first pressure sensor 4 to be equal, and adjust the opening of the gas cylinder group valve 7, the throttle valve 16 and the first valve 18 according to the difference between the pressure values ​​collected by the gas cylinder group pressure sensor 8 and the second pressure sensor 17, and the difference between the pressure values ​​collected by the second pressure sensor 17 and the first pressure sensor 4.

[0050] Optionally, the present application can also use the pressure values ​​collected by the gas cylinder group pressure sensor 8, the second pressure sensor 17 and the first pressure sensor 4 to verify each other, for example, by fully opening the throttle valve 16 to verify whether the error between the pressure values ​​collected by the second pressure sensor 17 and the first pressure sensor 4 is within a preset error threshold range. If so, it means that the second pressure sensor 17 and the first pressure sensor 4 are normal, otherwise at least one of the second pressure sensor 17 and the first pressure sensor 4 is abnormal.

[0051] Below, reference Figure 3 The electronic device according to the embodiment of the present application is described. The electronic device may be any one or both of the first device and the second device, or a stand-alone device independent of them, and the stand-alone device may communicate with the first device and the second device to receive the collected input signal from them.

[0052] Figure 3 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0053] like Figure 3 As shown, the electronic device 100 includes one or more processors 101 and a memory 102 .

[0054] The processor 101 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 100 to perform desired functions.

[0055] The memory 102 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 101 may run the program instructions to implement the methods of the various embodiments of the present application described above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0056] In one example, the electronic device 100 may further include: an input device 103 and an output device 104 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0057] When the electronic device is a stand-alone device, the input device 103 may be a communication network connector, which is used to receive the collected input signals from the first device and the second device.

[0058] In addition, the input device 103 may also include, for example, a keyboard, a mouse, and the like.

[0059] The output device 104 can output various information to the outside, including determined distance information, direction information, etc. The output device 104 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0060] Of course, to simplify, Figure 3 Only some of the components related to the present application in the electronic device 100 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 100 may also include any other appropriate components.

[0061] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the method according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0062] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0063] In addition, an embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0064] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0065] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0066] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0067] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0068] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0069] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A compressed natural gas supply device for an engine stand, characterized in that: include: A plurality of gas cylinder groups, each of which includes a plurality of gas cylinders, each of which stores compressed natural gas required for natural gas engine testing, a gas cylinder group valve and a gas cylinder group pressure sensor are respectively provided at each of the gas cylinder groups, and a gas cylinder valve is respectively provided at each of the gas cylinders; An engine air supply device, the engine air supply device is connected to the gas cylinder group and the natural gas engine, and is used to supply gas to the natural gas engine; A pressure stabilizing valve, which is disposed between the gas cylinder group and the engine gas supply device and is used to stabilize the pressure of the natural gas output to the engine gas supply device; a first pressure sensor, the first pressure sensor being disposed between the gas cylinder group and the pressure stabilizing valve and being used for monitoring the pressure of the natural gas output to the pressure stabilizing valve; A pressure relief valve, the pressure relief valve and the pressure stabilizing valve are arranged in parallel to release excess natural gas pressure; A controller, the controller is connected to the gas cylinder group valve, the gas cylinder valve, the gas cylinder group pressure sensor, the first pressure sensor, and the pressure relief valve, and is used to control the gas cylinder group valve, the gas cylinder valve, and the pressure relief valve to perform actions according to the natural gas pressure value monitored by the gas cylinder group pressure sensor and the first pressure sensor; The engine stand compressed natural gas supply device further comprises: a gas consumption meter, which is arranged between the engine gas supply device and the pressure regulating valve and is used to measure the natural gas consumption output to the natural gas engine; The engine rig compressed natural gas supply device further includes: a throttle valve and a second pressure sensor, wherein the throttle valve is disposed between the gas cylinder group and the first pressure sensor and is used to control the natural gas pressure output to the pressure stabilizing valve, and the second pressure sensor is disposed between the gas cylinder group and the throttle valve and is used to monitor the natural gas pressure output by the gas cylinder group; The controller sequentially opens the least number of gas cylinders in the gas cylinder group to supply gas to the natural gas engine according to the natural gas demand of the natural gas engine; the pressure values ​​collected by the pressure sensor of the gas cylinder group, the second pressure sensor and the first pressure sensor are mutually verified.

2. The engine pedestal compressed natural gas supply device according to claim 1, characterized in that: The engine stand compressed natural gas supply device also includes: a first gas sensor, which is arranged at the gas supply pipeline of the natural gas engine and is used to monitor the natural gas leakage in the gas supply pipeline of the natural gas engine.

3. The engine pedestal compressed natural gas supply device according to claim 1, characterized in that: The engine stand compressed natural gas supply device further includes: a second gas sensor, which is arranged at the gas cylinder group and is used to monitor the natural gas leakage of the gas cylinder group.

4. The engine pedestal compressed natural gas supply device according to claim 1, characterized in that: The engine bench compressed natural gas supply device further comprises: an indicator light, which is connected to the controller and is used to receive a control instruction from the controller and light up a corresponding color to display the working status of the engine bench compressed natural gas supply device.

5. The engine pedestal compressed natural gas supply device according to claim 1, characterized in that: The engine stand compressed natural gas supply device further comprises: a fan, which is arranged at the gas cylinder group and is used to dissipate heat from the gas cylinder group.

6. A method for supplying compressed natural gas to an engine stand, characterized in that: The compressed natural gas supply device for an engine rig applied to any one of claims 1 to 5 above, the compressed natural gas supply method for an engine rig comprising: Acquire monitoring data collected by a monitoring component; wherein the monitoring component includes the gas cylinder group pressure sensor and the first pressure sensor; The execution component is controlled to execute an action according to the monitoring data; wherein the execution component includes the gas cylinder group valve, the gas cylinder valve and the pressure relief valve.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to claim 6.

8. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the method according to claim 6.

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