Fuel gas supply system and vehicle
By using solenoid valves and controllers in LNG vehicles, the operational difficulties caused by the icing of mechanical valve bodies in low temperature environments are solved, intelligent adjustment and safety monitoring are achieved, and the safety and energy saving of the gas supply system are improved.
Patent Information
- Application Number
- CN202422556922.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The mechanical valve body of existing LNG vehicles is prone to freezing in low temperature environments, which leads to difficulty in manual operation of users, inability to intelligently adjust gas supply, and safety hazards.
The first solenoid valve and the second solenoid valve are adopted to intelligently control the gas flow and pressure through the controller to avoid manual operation, and combine the collision sensor, temperature sensor, leakage sensor and other sensors for safety monitoring and early warning.
It realizes intelligent regulation of gas supply in low temperature environments, improves the safety and energy saving of the system, and avoids operational difficulties and potential dangers caused by icing.
Smart Images
Figure CN223120049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a gas supply system and a vehicle. Background Art
[0002] In the related art, vehicles using LNG (Liquefied Natural Gas) have significant advantages in long-distance transportation. Currently, the gas cylinders for storing LNG in vehicles all adopt mechanical valve bodies, which are opened or closed by manual operation of users. When the external environmental temperature is too low, the valve body will freeze, making manual operation difficult, and users cannot control the gas supply. It will also cause the inability to intelligently adjust the gas supply according to the vehicle state. Summary of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a gas supply system, which can intelligently adjust the first solenoid valve and the second solenoid valve, without the need for users to manually operate the valve body, avoiding the difficulty of manual operation caused by icing and the inability to control the gas supply, and making the gas supply system more intelligent and energy-saving.
[0004] A second aspect embodiment of the utility model provides a vehicle.
[0005] To solve the above problems, a first aspect embodiment of the utility model provides a gas supply system, including: a gas storage cylinder for storing gas; a first solenoid valve disposed at the gas outlet of the gas storage cylinder, the first solenoid valve being used to adjust the gas flow rate of the gas storage cylinder; a second solenoid valve disposed in the gas storage cylinder, the second solenoid valve being used to adjust the gas pressure in the gas storage cylinder; a controller connected to the first solenoid valve, the controller being used to control the conduction or cut-off of the first solenoid valve and / or the second solenoid valve.
[0006] According to the gas supply system of the embodiment of the utility model, by setting a first solenoid valve to adjust the gas flow rate of the gas storage cylinder and a second solenoid valve to adjust the gas pressure in the gas storage cylinder, the controller can intelligently control the conduction or cut-off of the first solenoid valve and / or the second solenoid valve. Thus, compared with the mechanical valve body that requires manual operation by users in the prior art, the solution of using the controller to control the first solenoid valve and / or the second solenoid valve in this application does not require users to manually operate the valve body, thereby avoiding the difficulty of adjusting the gas storage cylinder caused by icing and making the gas supply system more intelligent and energy-saving.
[0007] In some embodiments, it further includes: a collision sensor, which is arranged at the front end of the vehicle cab, and the collision sensor is connected to the controller, and the collision sensor is used to detect the vehicle collision state; the controller is further used to control the first solenoid valve to cut off when the vehicle collision state is a collision.
[0008] In some embodiments, it further includes: a temperature sensor, which is connected to the controller, and the temperature sensor is arranged inside the shroud of the gas cylinder, and the temperature sensor is used to detect the temperature value of the gas cylinder; the controller is further used to control the first solenoid valve to cut off when the temperature value is lower than a preset threshold.
[0009] In some embodiments, it further includes: a leakage sensor, which is connected to the controller, and the leakage sensor is used to detect the gas leakage state; the controller is further used to control the first solenoid valve to cut off when the gas leakage state is a fault.
[0010] In some embodiments, it further includes: a first pressure sensor, which is connected to the controller, and the first pressure sensor is used to detect the pressure value of the gas cylinder.
[0011] In some embodiments, it further includes: a liquid level sensor, which is connected to the controller, and the liquid level sensor is used to detect the liquid level height of the gas cylinder; the controller is further used to control the on or off of the second solenoid valve according to the liquid level height.
[0012] In some embodiments, it further includes: a buffer tank; a second pressure sensor, which is connected to the buffer tank, and the second pressure sensor is used to detect the pressure value of the buffer tank.
[0013] A second aspect embodiment of the present invention proposes a vehicle, including the gas supply system of the above embodiment.
[0014] According to the vehicle of the embodiment of the present invention, through the above gas supply system, the pressure and flow rate of the gas output can be intelligently adjusted, and the vehicle can be provided with multiple functions.
[0015] In some embodiments, it includes: an instrument, which is connected to the controller of the gas supply system, and the instrument is used to display the working state of the gas supply system.
[0016] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings
[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:
[0018] Figure 1 is a schematic diagram of a fuel supply system according to an embodiment of the present utility model;
[0019] Figure 2 is a structural block diagram of a vehicle according to an embodiment of the present utility model.
[0020] Reference numerals:
[0021] Vehicle 1000;
[0022] Gas supply system 100; Instrument 200;
[0023] Gas storage cylinder 1; First solenoid valve 2; Second solenoid valve 3; Controller 4; Collision sensor 5; Temperature sensor 6; Leakage sensor 7; First pressure sensor 8; Liquid level sensor 9; Engine controller 10; Voltage regulator 11; Buffer tank 12; Second pressure sensor 13. Detailed implementation manners
[0024] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.
[0025] To solve the above problems, an embodiment of the first aspect of the present utility model provides a gas supply system. The gas supply system can control the first solenoid valve and the second solenoid valve through a controller to intelligently adjust the pressure and flow rate of the gas output, without the need for the user to manually operate the valve body, thereby avoiding difficulty in adjusting the gas storage cylinder caused by icing and making the gas supply system more intelligent and energy-saving.
[0026] The following refers to Figure 1 Describe the gas supply system 100 according to an embodiment of the present utility model. The gas supply system 100 includes a gas storage cylinder 1, a first solenoid valve 2, a second solenoid valve 3, and a controller 4.
[0027] Among them, the gas storage cylinder 1 is used to store gas; the first solenoid valve 2 is arranged at the gas outlet of the gas storage cylinder, and the first solenoid valve 2 is used to adjust the gas flow rate of the gas storage cylinder 1; the second solenoid valve 3 is arranged in the gas storage cylinder 1, and the second solenoid valve 3 is used to adjust the gas pressure in the gas storage cylinder 1; the controller 4 is connected to the first solenoid valve 2 and the second solenoid valve 3, and the controller 4 is used to control the conduction or cut-off of the first solenoid valve 2 and / or the second solenoid valve 3.
[0028] Specifically, the gas storage cylinder 1 is arranged outside the vehicle body. If the external environmental temperature is relatively low, icing may occur at the gas storage cylinder 1, which will cause difficulties for users to manually operate the gas storage cylinder 1 outside the vehicle body. Therefore, a first solenoid valve 2 is arranged at the gas outlet of the gas storage cylinder 1, a second solenoid valve 3 is arranged on the gas storage cylinder 1, and the controller 4 is connected to the first solenoid valve 2 and the second solenoid valve 3 to control the conduction or cut-off of the first solenoid valve 2 and / or the second solenoid valve 3 through the controller 4. That is to say, users do not need to manually operate outside the vehicle body, and the gas supply system 100 can intelligently adjust the gas flow rate of the gas storage cylinder 1 and the gas pressure in the gas storage cylinder 1 by using the controller 4. For example, the gas supply system 100 intelligently adjusts the gas flow rate of the gas storage cylinder 1 and the gas pressure in the gas storage cylinder 1 according to the engine working conditions of the vehicle. Therefore, compared with the prior art in which a mechanical valve body is used for the gas storage cylinder and users need to manually operate the valve body to control the gas supply, based on the above architecture, the gas supply system 100 of the present application can intelligently adjust the first solenoid valve 2 and the second solenoid valve 3 without manual operation by users, avoiding the difficulty of manual operation caused by icing and the inability to control the gas supply, and making the gas supply system 100 more intelligent and energy-saving.
[0029] For the gas supply system 100 according to the embodiment of the present invention, by setting the first solenoid valve 2 to adjust the gas flow rate of the gas storage cylinder and setting the second solenoid valve 3 to adjust the gas pressure in the gas storage cylinder, the controller 4 is used to intelligently control the conduction or cut-off of the first solenoid valve 2 and / or the second solenoid valve 3. Therefore, compared with the prior art in which users need to manually operate a mechanical valve body to control the gas supply, the solution of using the controller to control the first solenoid valve and / or the second solenoid valve in the present application does not require users to manually operate the valve body, avoiding the difficulty of manual operation caused by icing and the inability to control the gas supply, and making the gas supply system 100 more intelligent and energy-saving.
[0030] In some embodiments, as Figure 1 shown, the gas supply system 100 further includes a collision sensor 5.
[0031] Wherein, the collision sensor 5 is arranged at the front end of the vehicle cab, the collision sensor 5 is connected to the controller 4, and the collision sensor 5 is used to detect the vehicle collision state; the controller 5 is further used to control the first solenoid valve 2 to cut off when the vehicle collision state is a collision.
[0032] Specifically, the collision sensor 5 can detect the vehicle collision state and send the vehicle collision state to the controller 4. If the controller 4 determines that the vehicle collision state is a collision, the controller 4 controls the first solenoid valve 2 to cut off to stop the gas storage cylinder 1 from continuing to supply gas, avoiding gas leakage or fire caused by the collision, ensuring the safety of the vehicle, and improving the safety of the gas supply system 100, thereby realizing the collision cut-off function of the gas supply system 100.
[0033] In some embodiments, as Figure 1 shown, the gas supply system 100 further includes a temperature sensor 6.
[0034] Wherein, the temperature sensor 6 is connected to the controller 4. The temperature sensor 6 is disposed inside the shroud of the gas cylinder 1 and is used to detect the temperature value of the gas cylinder 1. The controller 4 is further configured to control the first solenoid valve 2 to cut off when the temperature value is lower than a preset threshold.
[0035] Specifically, when the gas in the gas cylinder 1 flows out from the bottle mouth of the gas cylinder 1, it will absorb heat, causing the temperature at the bottle mouth of the gas cylinder 1 to decrease. When the external temperature is relatively low, it is possible that the bottle mouth of the gas cylinder 1 freezes, damaging the gas cylinder 1, and further causing the sealing performance of the gas cylinder 1 to be damaged, resulting in gas leakage. Therefore, by arranging the temperature sensor 6 inside the shroud of the gas cylinder 1 to detect the temperature value of the gas cylinder 1 and sending the temperature value to the controller 4 to determine whether the bottle mouth of the gas cylinder 1 is frozen. If the controller 4 determines that the temperature value is lower than the preset threshold, at this time, the bottle mouth of the gas cylinder 1 is frozen. To avoid damage to the gas cylinder 1, the controller 4 controls the first solenoid valve 2 to cut off to stop the gas cylinder 1 from continuing to supply gas, ensuring vehicle safety. And when it is determined that the bottle mouth of the gas cylinder 1 is frozen, the controller 4 will also send a freezing signal to give a warning to the user, reminding the user to perform defrosting maintenance. For example, sending a freezing signal to the vehicle instrument, remote APP (Application, mobile software), etc., thereby realizing the freezing cut-off and warning functions of the gas supply system 100. The preset threshold can be set according to the actual situation and is not specifically limited here.
[0036] In some embodiments, as Figure 1 shown, the gas supply system 100 further includes a leakage sensor 7.
[0037] Wherein, the leakage sensor 7 is connected to the controller 4. The leakage sensor 7 is used to detect the gas leakage state. The controller 4 is further configured to control the first solenoid valve 2 to cut off when the gas leakage state is a fault.
[0038] Specifically, the leakage sensor 7 can determine whether the vehicle has gas leakage, that is, detect the gas leakage state, and send it to the controller 4. If the controller 4 determines that the vehicle has gas leakage, that is, the gas leakage state is a fault, to avoid danger caused by gas leakage to the vehicle, the controller 4 controls the first solenoid valve 2 to cut off to stop the gas cylinder 1 from continuing to supply gas, ensuring vehicle safety. And when it is determined that the vehicle has gas leakage, the controller 4 will also send a gas leakage signal to give a warning to the user, reminding the user to troubleshoot the gas leakage fault, thereby realizing the gas leakage cut-off and warning functions of the gas supply system 100.
[0039] In some embodiments, as Figure 1As shown, the gas supply system 100 further includes a first pressure sensor 8.
[0040] Among them, the first pressure sensor 8 is connected to the controller 4, and the first pressure sensor 8 is used to detect the pressure value of the gas storage cylinder 1.
[0041] Specifically, when the gas storage cylinder 1 supplies gas to the engine, the first pressure sensor 8 detects the pressure value of the gas storage cylinder 1 to ensure that the pressure value of the gas storage cylinder 1 is within a safe range, and sends the pressure value to the controller 4. If the controller 4 determines that the pressure value exceeds the pressure safety range of the gas storage cylinder 1, if the pressure value is too low, the controller 4 controls the second solenoid valve 3 to conduct to increase the gas pressure in the gas storage cylinder 1; if the pressure value is too high, the controller 4 controls the second solenoid valve to cut off to reduce the gas pressure in the gas storage cylinder 1.
[0042] In some embodiments, as Figure 1 shown, the gas supply system 100 further includes a liquid level sensor 9.
[0043] Among them, the liquid level sensor 9 is connected to the controller 4, and the liquid level sensor 9 is used to detect the liquid level height of the gas storage cylinder 1; the controller 4 is further used to control the conduction or cut-off of the second solenoid valve 3 according to the liquid level height.
[0044] Specifically, the liquid level sensor 9 can detect the liquid level height of the gas storage cylinder 1 to detect the remaining gas volume in the gas storage cylinder 1, and send the liquid level height to the controller 4. When the liquid level height decreases, the remaining gas volume in the gas storage cylinder 1 decreases, that is, the gas pressure in the gas storage cylinder 1 decreases, and the controller 4 controls the second solenoid valve 3 to conduct to ensure the gas output pressure of the gas storage cylinder 1.
[0045] In an embodiment, the controller 4 is connected to the engine controller 10, the engine controller 10 is connected to the voltage stabilizer 11, the engine controller 10 obtains the working condition parameters of the vehicle engine through the voltage stabilizer 11, thereby determining the gas demand of the engine and sending it to the controller 4, and the controller 4 can control the conduction or cut-off of the second solenoid valve 3 according to the liquid level height to ensure that the output pressure of the gas provided by the gas storage cylinder 1 always meets the gas demand of the engine.
[0046] In some embodiments, as Figure 1 shown, the gas supply system 100 further includes a buffer tank 12 and a second pressure sensor 13.
[0047] Among them, the second pressure sensor 13 is connected to the buffer tank 12, and the second pressure sensor 11 is used to detect the pressure value of the buffer tank 10.
[0048] Specifically, the buffer tank 12 is arranged between the gas storage cylinder 1 and the engine to stabilize the gas flow rate and pressure in the gas storage cylinder 1, avoiding large fluctuations in gas supply caused by changes in engine demand. After the second pressure sensor 13 detects the pressure value of the buffer tank 10, it sends it to the controller 4. If the controller 4 detects that the pressure value of the buffer tank exceeds the normal pressure value range of the buffer tank, the controller 4 will adjust the pressure value of the buffer tank 12 to avoid potential safety hazards. Thus, through the settings of the first pressure sensor 8, the liquid level sensor 9, the buffer tank 12, and the second pressure sensor 13, the gas supply system 100 realizes the constant pressure function of the gas cylinder.
[0049] In the embodiment, as Figure 1 shown, through the settings of the collision sensor 5, the temperature sensor 6, the leakage sensor 7, the first pressure sensor 8, the liquid level sensor 9, the buffer tank 12, and the second pressure sensor 13, the gas supply system 100 performs self-check on the gas system. Through the comprehensive judgment of the collision cut-off function, the icing cut-off and warning function, the gas leakage and warning function, and the constant pressure function of the gas cylinder, it is determined whether the gas supply 100 system is in a normal state, that is, the self-check of the gas supply system 100. If the controller 4 determines that the vehicle collision state is a collision; and / or determines that the temperature value is lower than the preset threshold; and / or determines that the gas leakage state is a fault; and / or determines that the pressure value of the gas storage cylinder is not within the safe pressure range; and / or determines that the liquid level height is not within the safe height range; and / or determines that the pressure value of the buffer tank is not within the safe pressure range, then it is determined that the gas supply system 100 is in a fault state and a signal is sent for warning, the system self-check is faulty, and the user is reminded to find the fault; otherwise, it is determined that the gas supply system 100 is in a normal state and the system self-check is normal.
[0050] The second aspect embodiment of the present invention proposes a vehicle 1000, as Figure 2 shown, including the gas supply system 100 of the above embodiment.
[0051] According to the vehicle 1000 of the embodiment of the present invention, through the above gas supply system 100, the pressure and flow rate of the gas output can be intelligently adjusted, and the vehicle can be equipped with multiple functions.
[0052] In some embodiments, as Figure 1 and Figure 2 shown, the vehicle 1000 includes an instrument 200.
[0053] Wherein, the instrument 200 is connected to the controller 4 of the gas supply system 100, and the instrument 200 is used to display the working state of the gas supply system 100.
[0054] Specifically, the gas supply system 100 performs self-check on the gas system through the settings of the collision sensor 5, temperature sensor 6, leakage sensor 7, first pressure sensor 8, liquid level sensor 9, buffer tank 12, and second pressure sensor 13. It comprehensively determines whether the gas supply system 100 is in a normal state through the collision cut-off function, icing cut-off and warning function, gas leakage and warning function, and constant pressure function of the gas cylinder, and sends the self-check status of the gas supply system 100 to the instrument 200. If it is determined that the self-check status of the gas supply system 100 is faulty, a fault signal is sent to the instrument 200 for warning to remind the user to find the fault; on the contrary, if the self-check status of the gas supply system 100 is normal, a normal signal is sent to the instrument 200.
[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.
[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.
Claims
1. A gas supply system, characterized in that, Comprising: A gas storage cylinder for storing fuel gas; A first solenoid valve disposed at the gas outlet of the gas storage cylinder, the first solenoid valve being used to adjust the fuel gas flow rate of the gas storage cylinder; A second solenoid valve disposed in the gas storage cylinder, the second solenoid valve being used to adjust the fuel gas pressure in the gas storage cylinder; A controller connected to the first solenoid valve and the second solenoid valve, the controller being used to control the conduction or cutoff of the first solenoid valve and / or the second solenoid valve.
2. The gas supply system according to claim 1, wherein Further comprising: A collision sensor disposed at the front end of the vehicle cab, the collision sensor being connected to the controller, the collision sensor being used to detect the vehicle collision state; The controller is further used to control the first solenoid valve to cutoff when the vehicle collision state is a collision.
3. The gas supply system according to claim 2, characterized in that, Further comprising: A temperature sensor connected to the controller, the temperature sensor being disposed inside the shroud of the gas storage cylinder, the temperature sensor being used to detect the temperature value of the gas storage cylinder; The controller is further used to control the first solenoid valve to cutoff when the temperature value is lower than a preset threshold.
4. The gas supply system according to claim 3, characterized in that, Further comprising: A leakage sensor connected to the controller, the leakage sensor being used to detect the fuel gas leakage state; The controller is further used to control the first solenoid valve to cutoff when the fuel gas leakage state is a fault.
5. The gas supply system according to claim 4, characterized in that, Further comprising: A first pressure sensor connected to the controller, the first pressure sensor being used to detect the pressure value of the gas storage cylinder.
6. The gas supply system according to claim 5, characterized in that, Further comprising: A liquid level sensor connected to the controller, the liquid level sensor being used to detect the liquid level height of the gas storage cylinder; The controller is further used to control the conduction or cutoff of the second solenoid valve according to the liquid level height.
7. The gas supply system according to claim 5, wherein Further comprising: A buffer tank; A second pressure sensor connected to the buffer tank, the second pressure sensor being used to detect the pressure value of the buffer tank.
8. A vehicle, characterized in that, Comprising the fuel gas supply system according to any one of claims 1-7.
9. The vehicle according to claim 8, characterized in that, Comprising: An instrument connected to the controller of the fuel gas supply system, the instrument being used to display the working state of the fuel gas supply system.