A cylinder pressure control system and apparatus

Abstract

The utility model discloses a kind of gas cylinder pressure control system and equipment, applied to the equipment with gas cylinder, the system includes: the pressure detection component of connecting gas cylinder, gas cylinder supercharging pipeline and gas cylinder pressure reducing pipeline, pressure detection component includes pressure sensor, gas cylinder supercharging pipeline includes supercharging outlet liquid pipeline solenoid valve, gas cylinder pressure reducing pipeline includes throttle solenoid valve;Vehicle controller is electrically connected pressure sensor, supercharging outlet liquid pipeline solenoid valve and throttle solenoid valve respectively, for collecting the pressure data of gas cylinder by pressure sensor, and according to the switch state of the independent control supercharging outlet liquid pipeline solenoid valve and throttle solenoid valve of gas cylinder pressure data.In the utility model, vehicle controller is electrically connected supercharging outlet liquid pipeline solenoid valve and throttle solenoid valve, can realize the intelligent control of gas cylinder's supercharging process and pressure reducing process by pressure monitoring, also realized the full-course intelligent monitoring and control of gas cylinder, so that the gas cylinder performance of equipment is more excellent.

Description

Technical Field

[0001] This utility model relates to the field of gas cylinder pressure control technology, and in particular to a gas cylinder pressure control system and equipment. Background Technology

[0002] With the booming domestic natural gas vehicle market, more and more vehicles are using LNG (liquefied natural gas) as fuel. Consequently, the control requirements for the gas cylinders storing liquefied natural gas in vehicles are also becoming increasingly stringent.

[0003] However, current control of LNG cylinders for vehicles mainly involves cylinder pressurization solutions, without considering the actual pressure requirements of the vehicle for the cylinders. This results in a low level of intelligence in cylinder control, which is detrimental to the development of natural gas vehicles. Summary of the Invention

[0004] This utility model provides a gas cylinder pressure control system and equipment to improve the intelligence of vehicle gas cylinder control.

[0005] According to one aspect of this utility model, a gas cylinder pressure control system is provided, applied in equipment with gas cylinders, comprising:

[0006] A pressure detection component, a gas cylinder pressurization pipeline, and a gas cylinder depressurization pipeline are connected to the gas cylinder. The pressure detection component includes a pressure sensor, the gas cylinder pressurization pipeline includes a pressurization outlet solenoid valve, and the gas cylinder depressurization pipeline includes a gas-saving solenoid valve.

[0007] The vehicle controller is electrically connected to the pressure sensor, the booster outlet solenoid valve, and the throttle solenoid valve, respectively. It is used to collect the pressure data of the gas cylinder through the pressure sensor and independently control the on / off state of the booster outlet solenoid valve and the throttle solenoid valve based on the pressure data of the gas cylinder.

[0008] According to one aspect of the present invention, an apparatus is provided, comprising: a gas cylinder pressure control system and a gas cylinder as described above.

[0009] In this invention, the gas cylinder pressure control system includes: a pressure detection component connected to the gas cylinder, a gas cylinder pressurization pipeline, and a gas cylinder depressurization pipeline. The pressure detection component includes a pressure sensor to collect pressure data from the gas cylinder. The gas cylinder pressurization pipeline includes a pressurization outlet solenoid valve, and the gas cylinder depressurization pipeline includes a throttle solenoid valve. The vehicle controller is electrically connected to the pressure sensor to monitor the gas cylinder pressure in real time. The vehicle controller is also electrically connected to the pressurization outlet solenoid valve to intelligently control its opening and closing through pressure monitoring, thus achieving intelligent control of the gas cylinder pressurization process. Furthermore, the vehicle controller is electrically connected to the throttle solenoid valve to intelligently control its opening and closing through pressure monitoring, thus achieving intelligent control of the gas cylinder depressurization process. This invention achieves intelligent monitoring and control of the gas cylinder throughout the entire process, resulting in superior gas cylinder performance, eliminating the need for manual operation, reducing costs, and improving equipment operational safety.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a device provided in an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of a gas cylinder pressure control system provided in an embodiment of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0016] Figure 1 This is a schematic diagram of a device provided in an embodiment of this utility model, as shown below. Figure 1 As shown, the device 100 provided in this embodiment includes a gas cylinder pressure control system 110 and a gas cylinder 120. The gas cylinder pressure control system 110 is used to regulate the internal pressure of the gas cylinder 120 and also to control the gas cylinder 120 to provide energy to the gas supply system of the power component of the device 100. If the device 100 is a vehicle, the device 100 includes an engine 130, which has a gas supply system. The gas cylinder pressure control system 110 is used to regulate the internal pressure of the gas cylinder 120 and control the gas cylinder 120 to provide energy to the gas supply system of the engine 130. Optionally, the gas cylinder 120 can be a liquefied natural gas cylinder for storing liquefied natural gas.

[0017] The device 100 provided in this embodiment includes a gas cylinder pressure control system 110 that can intelligently control the gas cylinder 120. The structure and working principle of the gas cylinder pressure control system 110 will be described in detail through several embodiments to illustrate its intelligent control of the gas cylinder 120. Based on this, the gas cylinder pressure control system 110 in the device 100 provided in this embodiment not only meets the growing domestic market for natural gas vehicles but also enhances the performance of the gas cylinder 120, meeting the various operating conditions required by the vehicle in complex scenarios. Simultaneously, it enables more convenient, simpler, and intelligent operation of the liquefied natural gas (LNG) gas cylinder 120, improving vehicle safety and usability. It is understood that the gas cylinder pressure control system 110 can be applied not only to vehicles with gas cylinders 120 but also to other devices, without specific limitations.

[0018] Figure 2 This is a schematic diagram of a gas cylinder pressure control system provided in an embodiment of the present invention. The gas cylinder pressure control system is... Figure 1 The gas cylinder pressure control system 110 is used in various devices 100 that have gas cylinders 120. Here, it is used as an example. Figure 1The device 100 shown is exemplified using a vehicle as an example. The gas cylinder pressure control system 110 is used to control the gas cylinder 120 to provide energy to the vehicle's engine 130's air supply system. Figure 2 As shown, the gas cylinder pressure control system 110 includes: a pressure detection component 141 connected to the gas cylinder 120, a gas cylinder pressurization line 142, and a gas cylinder depressurization line 143. The pressure detection component 141 includes a pressure sensor Pt1, the gas cylinder pressurization line 142 includes a pressurization outlet solenoid valve SV2, and the gas cylinder depressurization line 143 includes a throttle solenoid valve SV1. A vehicle controller 144 is electrically connected to the pressure sensor Pt1, the pressurization outlet solenoid valve SV2, and the throttle solenoid valve SV1, respectively. It is used to collect pressure data from the gas cylinder 120 via the pressure sensor Pt1 and independently control the on / off states of the pressurization outlet solenoid valve SV2 and the throttle solenoid valve SV1 based on the pressure data from the gas cylinder 120. It can be understood that in the gas cylinder pressure control system 110, each line includes at least one transmission line, and a valve is installed on the transmission line. The on / off state of the valve is controlled to control the opening or closing of the corresponding position in the transmission line.

[0019] In this embodiment, the gas cylinder pressure control system 110 includes a pressure detection component 141 connected to the gas cylinder 120. The pressure detection component 141 includes a pressure sensor Pt1 and a pressure gauge P1 connected to the gas cylinder 120. The pressure sensor Pt1 and the pressure gauge P1 are also connected. The pressure detection component 141 can detect the pressure signal inside the gas cylinder 120 in real time and obtain the pressure data of the gas cylinder 120. The gas cylinder pressure signal includes the pressure value inside the gas cylinder. Specifically, the pressure gauge P1 measures the pressure inside the gas cylinder 120, and the pressure sensor Pt1 senses the pressure signal from the pressure gauge P1 and converts the pressure signal into pressure data, which is an electrical signal converted from the pressure signal. The pressure sensor Pt1 is electrically connected to the vehicle controller 144. The vehicle controller 144 can obtain the pressure data of the gas cylinder 120 in real time from the pressure sensor Pt1. This pressure data can be considered as an actual reflection of the pressure inside the gas cylinder 120. Therefore, the gas cylinder pressure control system 110 can monitor the pressure of the gas cylinder 120 in real time.

[0020] The gas cylinder pressure control system 110 includes a main safety valve Svp connected to the pressure detection assembly 141.

[0021] The cylinder pressure control system 110 includes a cylinder pressurization line 142 connected to the cylinder 120. The cylinder pressurization line 142 includes a pressurization outlet solenoid valve SV2, which is located within the cylinder pressurization line 142. The vehicle controller 144 is electrically connected to the pressurization outlet solenoid valve SV2 and controls its opening or closing based on the pressure data from the cylinder 120. The on / off state of the pressurization outlet solenoid valve SV2 determines the opening or closing of the pressurization path between the cylinder pressurization line 142 and the cylinder 120. Specifically, if the vehicle controller 144 determines that the gas cylinder 120 needs pressurization based on the pressure data of the gas cylinder 120, it controls the opening of the pressurization outlet solenoid valve SV2, opening the gas cylinder pressurization line 142. This establishes a pressurization path between the gas cylinder pressurization line 142 and the gas cylinder 120, thus pressurizing the gas cylinder 120 and increasing its pressure. Alternatively, if the vehicle controller 144 determines that the gas cylinder 120 does not need pressurization based on the pressure data of the gas cylinder 120, it controls the closing of the pressurization outlet solenoid valve SV2, closing the gas cylinder pressurization line 142. This disconnects the pressurization path between the gas cylinder pressurization line 142 and the gas cylinder 120, preventing further pressurization of the gas cylinder 120 and maintaining a stable pressure. Therefore, the cylinder pressure control system 110 monitors the pressure of the cylinder 120 in real time, and through intelligent control of the pressure monitoring, controls the opening and closing of the solenoid valve SV2 in the pressurization pipeline, thereby realizing intelligent control of the pressurization process of the cylinder 120.

[0022] The gas cylinder pressure control system 110 includes a gas cylinder pressure reduction line 143 connected to the gas cylinder 120. The gas cylinder pressure reduction line 143 includes a throttle solenoid valve SV1, which is located within the gas cylinder pressure reduction line 143. The vehicle controller 144 is electrically connected to the throttle solenoid valve SV1 and controls the throttle solenoid valve SV1 to open or close based on the pressure data of the gas cylinder 120. The on / off state of the throttle solenoid valve SV1 determines whether the pressure reduction path between the gas cylinder pressure reduction line 143 and the gas cylinder 120 is open or closed. Specifically, if the vehicle controller 144 determines that the gas cylinder 120 needs pressure reduction based on the pressure data of the gas cylinder 120, it controls the throttle solenoid valve SV1 to open, thus opening the gas cylinder pressure reduction line 143. This establishes a pressure reduction path between the gas cylinder pressure reduction line 143 and the gas cylinder 120, allowing gas to be discharged from the gas cylinder 120 through the gas cylinder pressure reduction line 143, thereby reducing the pressure in the gas cylinder 120. Alternatively, if the vehicle controller 144 determines that the gas cylinder 120 does not require depressurization based on the pressure data of the gas cylinder 120, it controls the throttle solenoid valve SV1 to close, thereby shutting off the gas cylinder depressurization line 143. This disconnects the depressurization path between the gas cylinder depressurization line 143 and the gas cylinder 120, preventing gas from venting through the depressurization line 143 and thus preventing further pressure reduction. The pressure of the gas cylinder 120 remains stable. Therefore, the gas cylinder pressure control system 110 monitors the pressure of the gas cylinder 120 in real time and intelligently controls the opening and closing of the throttle solenoid valve SV1 through pressure monitoring, achieving intelligent control of the depressurization process of the gas cylinder 120.

[0023] In this invention, the gas cylinder pressure control system includes: a pressure detection component connected to the gas cylinder, a gas cylinder pressurization pipeline, and a gas cylinder depressurization pipeline. The pressure detection component includes a pressure sensor to collect pressure data from the gas cylinder. The gas cylinder pressurization pipeline includes a pressurization outlet solenoid valve, and the gas cylinder depressurization pipeline includes a throttle solenoid valve. The vehicle controller is electrically connected to the pressure sensor to monitor the gas cylinder pressure in real time. The vehicle controller is also electrically connected to the pressurization outlet solenoid valve to intelligently control its opening and closing through pressure monitoring, thus achieving intelligent control of the gas cylinder pressurization process. Furthermore, the vehicle controller is electrically connected to the throttle solenoid valve to intelligently control its opening and closing through pressure monitoring, thus achieving intelligent control of the gas cylinder depressurization process. This invention achieves intelligent monitoring and control of the gas cylinder throughout the entire process, resulting in superior gas cylinder performance, eliminating the need for manual operation, reducing costs, and improving equipment operational safety.

[0024] refer to Figure 2As shown, the optional gas cylinder pressurization line 142 includes: a pressurization outlet valve PV and a self-pressurization coil Pr1; the pressurization outlet valve PV is located between the gas cylinder 120 and the pressurization outlet solenoid valve SV2, and the pressurization outlet solenoid valve SV2 is located between the pressurization outlet valve PV and the self-pressurization coil Pr1; the vehicle controller 144 is used to open the pressurization outlet solenoid valve SV2 in self-pressurization mode when the pressure data of the gas cylinder 120 is lower than a first set value, or to close the pressurization outlet solenoid valve SV2 when the pressure data of the gas cylinder 120 is higher than a second set value. When the first set value is less than or equal to the second set value, the pressurization outlet valve PV is in a normally open state.

[0025] In this embodiment, the booster valve PV is located in the gas cylinder booster pipeline 142, and the self-boosting coil Pr1 is located in the gas cylinder booster pipeline 142. Specifically, the booster valve PV is located in the pipeline between the gas cylinder 120 and the booster pipeline solenoid valve SV2, and the self-boosting coil Pr1 is located in the pipeline on the side of the booster pipeline solenoid valve SV2 away from the booster valve PV. Under normal circumstances, the booster valve PV is in the normally open state.

[0026] The booster outlet valve PV, the booster outlet pipeline solenoid valve SV2, and the self-boosting coil Pr1 can constitute a self-boosting circuit. Specifically, the vehicle controller 144 can collect the pressure data in the gas cylinder 120 in real time through the pressure sensor Pt1. After logical judgment, it can intelligently control the booster outlet pipeline solenoid valve SV2 to open or close, thereby opening or closing the self-boosting circuit. The vehicle controller 144 pre-stores a first set value and a second set value. The first set value is less than or equal to the second set value. Relevant personnel can reasonably design the specific values ​​of the first set value and the second set value according to the product requirements, without specific limitations.

[0027] When the gas cylinder pressure control system 110 is in self-pressurization mode, if the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is lower than the first set value, it can control the solenoid valve SV2 of the pressurization outlet pipeline to be in the open state and the pressurization outlet valve PV to be in the normally open state after logical judgment. This allows the gas cylinder 120 and the self-pressurization coil Pr1 to form a closed loop, thereby increasing the pressure of the gas cylinder 120 and achieving self-pressurization. Optionally, the gas cylinder 120 may contain liquefied natural gas (LNG). LNG has a high liquid-to-gas ratio. In self-pressurization mode, the small amount of liquid output from the gas cylinder 120 can be vaporized into a large amount of steam through the self-pressurization coil Pr1. The steam is fed back to the gas cylinder 120 through the self-pressurization coil Pr1. This is a closed loop, so the increased gas volume in the gas cylinder 120 is much greater than the liquid volume output from the gas cylinder 120. Furthermore, gas is compressible, thus increasing the pressure of the gas cylinder 120.

[0028] When the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is higher than the second set value, it can control the solenoid valve SV2 of the booster liquid outlet line to be closed after logical judgment. Then the path between the gas cylinder 120 and the self-boosting coil Pr1 is disconnected, the pressure inside the gas cylinder 120 no longer increases, and the pressure inside the gas cylinder 120 remains stable.

[0029] Therefore, the cylinder pressure control system 110 monitors the pressure of the cylinder 120 in real time, and through intelligent control of the pressure monitoring, controls the opening and closing of the solenoid valve SV2 in the pressurization pipeline, thereby realizing intelligent control of the pressurization process of the cylinder 120.

[0030] refer to Figure 2 As shown, the optional gas cylinder pressurization line 142 includes: a first pressurization pump CP1 and a first check valve CV1. The first pressurization pump CP1 is located between the self-pressurization coil Pr1 and the first check valve CV1, and the first check valve CV1 is located between the first pressurization pump CP1 and the gas cylinder 120. The vehicle controller 144 is electrically connected to the first pressurization pump CP1 and is used to open the pressurization outlet solenoid valve SV2 and operate the first pressurization pump CP1 when the pressure data of the gas cylinder 120 is lower than a third set value in the auxiliary pressurization mode, or to close the pressurization outlet solenoid valve SV2 and the first pressurization pump CP1 when the pressure data of the gas cylinder 120 is higher than a fourth set value. The third set value is less than or equal to the fourth set value.

[0031] In this embodiment, the first booster pump CP1 is located between the self-boosting coil Pr1 and the first one-way valve CV1, and the first one-way valve CV1 is located between the first booster pump CP1 and the gas cylinder 120. Under normal circumstances, the booster outlet valve PV is in the normally open state. The vehicle controller 144 is electrically connected to the first booster pump CP1 and can intelligently control the opening and closing of the first booster pump CP1.

[0032] The booster outlet valve PV, the booster outlet pipeline solenoid valve SV2, the self-boosting coil Pr1, the first booster pump CP1, and the first one-way valve CV1 can constitute an auxiliary booster circuit. Specifically, the vehicle controller 144 can collect the pressure data in the gas cylinder 120 in real time through the pressure sensor Pt1. After logical judgment, it can intelligently control the switching action of the booster outlet pipeline solenoid valve SV2 and the first booster pump CP1 to open or close the auxiliary booster circuit. The vehicle controller 144 has a third setting value and a fourth setting value pre-stored. The third setting value is less than or equal to the fourth setting value. Relevant personnel can reasonably design the specific values ​​of the third setting value and the fourth setting value according to the product requirements, without specific limitations.

[0033] When the gas cylinder pressure control system 110 is in auxiliary boosting mode, if the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is lower than the third set value, it can, after logical judgment, control the solenoid valve SV2 of the boosting liquid outlet pipeline and the first boosting pump CP1 to be in the open state, thus operating the first boosting pump CP1. The first boosting pump CP1 can draw saturated vapor from the boosting coil Pr1 and transfer it to the gas phase space of the gas cylinder 120 through the open first one-way valve CV1, thereby increasing the pressure in the gas cylinder 120 and achieving boosting. Optionally, the gas cylinder 120 may store liquefied natural gas. Since liquefied natural gas has a high liquid-to-gas ratio, in auxiliary boosting mode, the small amount of liquid output from the gas cylinder 120 can be vaporized into a large amount of vapor through the boosting coil Pr1. The vapor is then input into the gas cylinder 120 through the first boosting pump CP1, thereby increasing the pressure of the gas cylinder 120. The gas phase space of gas cylinder 120 is the top space of gas cylinder 120 that is not occupied by liquid. Similarly, the liquid phase space of gas cylinder 120 is the lower space of gas cylinder 120 occupied by liquid.

[0034] When the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is higher than the fourth set value, it can control the solenoid valve SV2 of the booster outlet pipeline and the first booster pump CP1 to be in the closed state after logical judgment. Then the auxiliary booster path between the gas cylinder 120 and the self-boosting coil Pr1 is disconnected, the pressure inside the gas cylinder 120 no longer increases, and the pressure inside the gas cylinder 120 remains stable.

[0035] Therefore, the cylinder pressure control system 110 monitors the pressure of the cylinder 120 in real time, and through intelligent control of the pressure monitoring, controls the opening and closing of the solenoid valve SV2 of the booster outlet pipeline and the first booster pump CP1, thereby realizing intelligent control of the pressurization process of the cylinder 120.

[0036] refer to Figure 2 As shown, the optional gas cylinder pressure control system 110 includes: a gas cylinder liquid supply line 145, which includes a vaporizer Va; a gas cylinder pressurization line 142 including: a second pressurization pump CP2 and a second one-way valve CV2, which is located between the second pressurization pump CP2 and the gas cylinder 120; the second pressurization pump CP2 is connected to the vaporizer Va; the vehicle controller 144 is electrically connected to the second pressurization pump CP2 and is used to operate the second pressurization pump CP2 to extract vapor from the vaporizer Va when the pressure data of the gas cylinder 120 is lower than a fifth set value in active pressurization mode, or to shut off the second pressurization pump CP2 when the pressure data of the gas cylinder 120 is higher than a sixth set value, wherein the fifth set value is less than or equal to the sixth set value.

[0037] In this embodiment, the second booster pump CP2 is connected to the vaporizer Va in the gas cylinder supply line 145, and can extract vapor from the vaporizer Va during operation. Specifically, the second one-way valve CV2 is located between the second booster pump CP2 and the gas cylinder 120. The vehicle controller 144 is electrically connected to the second booster pump CP2, and can intelligently control the opening and closing of the second booster pump CP2.

[0038] The second booster pump CP2 and the second one-way valve CV2, connected to the gas cylinder supply line 145, can form an active booster circuit. Specifically, the vehicle controller 144 can collect pressure data from the gas cylinder 120 in real time through the pressure sensor Pt1. After logical judgment, it can intelligently control the switching action of the second booster pump CP2 to open or close the active booster circuit. The vehicle controller 144 has a fifth setting value and a sixth setting value pre-stored. The fifth setting value is less than or equal to the sixth setting value. Relevant personnel can reasonably design the specific values ​​of the fifth setting value and the sixth setting value according to the product requirements, without specific limitations.

[0039] When the gas cylinder pressure control system 110 is in active boosting mode, if the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is lower than the fifth preset value, it can control the second booster pump CP2 to be turned on after logical judgment. Operating the second booster pump CP2 allows it to draw saturated vapor from the carburetor Va and transfer it to the gas phase space of the gas cylinder 120 through the open second one-way valve CV2, thereby increasing the pressure inside the gas cylinder 120 and achieving boosting. Optionally, the gas cylinder 120 may contain liquefied natural gas (LNG). LNG has a high liquid-to-gas ratio; in active boosting mode, the small amount of liquid output from the gas cylinder 120 can be converted into a large amount of vapor through the carburetor Va. This vapor is then drawn into the gas cylinder 120 by the second booster pump CP2, allowing the pressure in the gas cylinder 120 to rise rapidly.

[0040] When the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is higher than the sixth set value, it can control the second booster pump CP2 to be in the closed state after logical judgment. Then the active boosting path of the gas cylinder 120 is disconnected, the pressure inside the gas cylinder 120 no longer increases, and the pressure inside the gas cylinder 120 remains stable.

[0041] Therefore, the gas cylinder pressure control system 110 monitors the pressure of the gas cylinder 120 in real time, and through intelligent control of the pressure monitoring, controls the opening and closing of the solenoid valve SV2 of the booster outlet pipeline and the second booster pump CP2, thereby realizing intelligent control of the pressurization process of the gas cylinder 120.

[0042] refer to Figure 2As shown, the optional gas cylinder pressure control system 110 includes: a gas cylinder supply line 145, which includes a temperature sensor TP; the vehicle controller 144 is electrically connected to the temperature sensor TP and is used to control the booster pump to stop operating when the gas temperature in the gas cylinder supply line 145 is detected to be lower than the set temperature value.

[0043] In this embodiment, the temperature sensor TP is installed in the gas cylinder supply line 145, such as... Figure 2 The temperature sensor TP shown is located at the air supply port of the engine 130, but is not limited to this location. The temperature sensor TP can detect the gas temperature in the gas cylinder supply line 145 in real time and convert the gas temperature into temperature data, which is an electrical signal for gas temperature conversion. The vehicle controller 144 has temperature setpoints pre-stored, and relevant personnel can reasonably design the specific values ​​of the temperature setpoints according to the product requirements, without specific limitations.

[0044] The vehicle controller 144 is electrically connected to the temperature sensor TP. The vehicle controller 144 can acquire temperature data from the temperature sensor TP in real time, which can be considered as an actual reflection of the gas temperature. Therefore, the gas cylinder pressure control system 110 can monitor the gas temperature in the gas cylinder supply line 145 in real time. When the vehicle controller 144 detects that the gas temperature in the gas cylinder supply line 145 is lower than the set temperature value, it can, after logical judgment, control the first booster pump CP1 and the second booster pump CP2 to stop operating or not start, in order to protect the first booster pump CP1 and the second booster pump CP2 in the gas cylinder pressure control system 110.

[0045] refer to Figure 1 and Figure 2 As shown, the optional device 100 includes an engine 130; the gas cylinder pressure control system 110 includes: a gas cylinder supply line 145, the gas cylinder supply line 145 includes a supply line solenoid valve SV3 and a buffer tank 145a, the supply line solenoid valve SV3 is located between the gas cylinder 120 and the buffer tank 145a, and the buffer tank 145a is connected to the gas supply line of the engine 130; the vehicle controller 144 is electrically connected to the supply line solenoid valve SV3, and is used to open the supply line solenoid valve SV3 when the device 100 is working, or to close the supply line solenoid valve SV3 when the device 100 is not running. The optional gas cylinder supply line 145 includes: a buffer tank pressure sensor Pt2, which is located between the buffer tank 145a and the engine 130; the vehicle controller 144 is electrically connected to the buffer tank pressure sensor Pt2 and is used to collect the air supply port pressure data of the engine 130 through the buffer tank pressure sensor Pt2, and close the supply line solenoid valve SV3 when the air supply port pressure data of the engine 130 meets the pressure change condition.

[0046] In this embodiment, the gas cylinder supply line 145 includes a first line node N1. Optionally, the gas cylinder supply line 145 includes an outlet check valve DCv, located between the gas cylinder 120 and the first line node N1; the gas cylinder supply line 145 includes an outlet shut-off valve Vu, located between the first line node N1 and the supply line solenoid valve SV3; the gas cylinder supply line 145 includes a vaporizer Va, located between the supply line solenoid valve SV3 and the buffer tank 145a; the buffer tank 145a is connected to a buffer tank pressure gauge P2, and a buffer tank pressure sensor Pt2 is located between the buffer tank 145a and the engine 130; a temperature sensor TP is located at the gas inlet of the engine 130. Optionally, the gas cylinder supply line 145 includes a line safety valve LSv.

[0047] Specifically, the vehicle controller 144 is electrically connected to the liquid supply line solenoid valve SV3 to control its opening and closing. When the vehicle is supplied with natural gas, the equipment 100 operates, and the vehicle controller 144 controls the opening of the liquid supply line solenoid valve SV3; when the vehicle is turned off, the equipment 100 stops operating, and the vehicle controller 144 controls the closing of the liquid supply line solenoid valve SV3. When the vehicle is supplied with natural gas, the liquid outlet shut-off valve Vu is normally open, and the liquefied natural gas in the gas cylinder 120 flows through the liquid outlet check valve DCv, through the liquid outlet shut-off valve Vu and the liquid supply line solenoid valve SV3, into the gas supply line and gas supply system of the engine 130.

[0048] The vehicle controller 144 is electrically connected to the buffer tank pressure sensor Pt2. The buffer tank pressure gauge P2 and the buffer tank pressure sensor Pt2, as buffer tank pressure detection components, can acquire pressure data at location 145a of the buffer tank in real time. This pressure data at location 145a is also the air supply port pressure data of the engine 130. The vehicle controller 144 can acquire the air supply port pressure data of the engine 130 in real time through the buffer tank pressure sensor Pt2. In the initial design, based on various scenarios of a sharp drop in engine air supply port pressure, the conditions for rapid pressure changes can be obtained and stored in the vehicle controller 144.

[0049] Based on the air supply port pressure data of the engine 130, the vehicle controller 144 can intelligently control the opening or closing of the fuel supply line solenoid valve SV3 after logical judgment, enabling the fuel supply line solenoid valve SV3 to function as an overflow valve (Ef). Specifically, the vehicle controller 144 collects the air supply port pressure data of the engine 130 in real time through the buffer tank pressure sensor Pt2. After logical judgment, when a sharp drop in the air supply port pressure of the engine 130 is detected (such as the air supply line of the engine 130 becoming detached), the air supply port pressure data of the engine 130 meets the pressure change condition, and the fuel supply line solenoid valve SV3 is controlled to close urgently. The gas cylinder 120 automatically stops supplying fuel to the engine 130 without driver intervention, thereby ensuring the safety of the vehicle and driver. The fuel supply line solenoid valve SV3 can realize the function of the overflow valve Ef.

[0050] Therefore, the gas cylinder pressure control system 110 monitors the pressure of the gas cylinder 120 and the gas supply port pressure of the engine 130 in real time, and realizes intelligent control of the gas cylinder liquid supply by intelligently controlling the opening and closing of the solenoid valve SV3 of the liquid supply pipeline through pressure monitoring.

[0051] refer to Figure 2 As shown, the optional gas cylinder liquid supply line 145 includes a first line node N1 and a liquid outlet check valve DCv, with the liquid outlet check valve DCv located between the gas cylinder 120 and the first line node N1; the throttle solenoid valve SV1 is located between the gas cylinder 120 and the output end of the gas cylinder pressure reduction line 143, with the output end of the gas cylinder pressure reduction line 143 connected to the first line node N1; the vehicle controller 144 is used to close the throttle solenoid valve SV1 when the pressure data of the gas cylinder 120 is lower than the seventh set value, or to open the throttle solenoid valve SV1 when the pressure data of the gas cylinder 120 is higher than the eighth set value and the gas cylinder liquid supply line 145 supplies gas to the engine 130, wherein the seventh set value is less than or equal to the eighth set value.

[0052] In this embodiment, the throttle solenoid valve SV1 is located between the gas cylinder 120 and the first pipeline node N1. The vehicle controller 144 is electrically connected to the throttle solenoid valve SV1. Specifically, the vehicle controller 144 can collect the pressure data inside the gas cylinder 120 in real time through the pressure sensor Pt1. After logical judgment, it can intelligently control the opening and closing of the throttle solenoid valve SV1, so as to open or close the gas cylinder pressure reduction pipeline 143, thereby realizing the regulation and control of the internal pressure of the gas cylinder 120. The vehicle controller 144 has a seventh setting value and an eighth setting value pre-stored. The seventh setting value is less than or equal to the eighth setting value. Relevant personnel can reasonably design the specific values ​​of the seventh setting value and the eighth setting value according to the product requirements, without specific limitations.

[0053] When the vehicle controller 144 detects that the pressure data of the gas cylinder 120 is higher than the eighth set value, if the gas cylinder liquid supply line 145 is supplying gas to the engine 130, it can control the throttle solenoid valve SV1 to open after logical judgment. Then, the saturated vapor in the gas phase space at the top of the gas cylinder 120 can enter the gas cylinder liquid supply line 145 through the throttle solenoid valve SV1. The gas cylinder liquid supply line 145 transmits a gas-liquid mixture to achieve pressure reduction.

[0054] As the gas in cylinder 120 is continuously used, the pressure inside cylinder 120 gradually decreases. When the vehicle controller 144 detects that the pressure data of cylinder 120 is lower than the seventh set value, it controls the throttle solenoid valve SV1 to close after logical judgment. At this time, the liquid outlet check valve DCv is in the open state, and the liquid supply pipeline 145 of the gas cylinder returns to the liquid supply state, that is, the pipeline transmits liquid.

[0055] In other embodiments, optional devices include: a pressure-reducing touch control module; the vehicle controller is electrically connected to the pressure-reducing touch control module and is used to control the on / off state of the throttle solenoid valve according to the pressure-reducing control command transmitted by the pressure-reducing touch control module. Specifically, a gas cylinder pressure-reducing button is provided in the vehicle's cab. The gas cylinder pressure-reducing button serves as the pressure-reducing touch control module. The user in the vehicle can directly open or close the throttle solenoid valve SV1 via the gas cylinder pressure-reducing button based on their judgment of the upcoming gas station or operating scenario. The vehicle controller controls the opening of the throttle solenoid valve according to the pressure-reducing opening command transmitted by the pressure-reducing touch control module, or controls the closing of the throttle solenoid valve according to the pressure-reducing closing command transmitted by the pressure-reducing touch control module, thus meeting the user's expectation of reducing gas cylinder pressure. Alternatively, in other embodiments, the throttle solenoid valve can be an economy valve with a manual valve, allowing manual control of the gas cylinder pressure-reducing pipeline to achieve the gas cylinder pressure-reducing function. It is understandable that the pressure reduction control command transmitted by the pressure reduction touch module comes from the user's input. Specifically, when the user touches the pressure reduction touch module, the pressure reduction touch module generates the corresponding pressure reduction start command or pressure reduction stop command, so as to satisfy the user's manual control of the throttle solenoid valve.

[0056] Therefore, the cylinder pressure control system 110 monitors the pressure of cylinder 120 in real time and intelligently controls the opening and closing of the throttle solenoid valve SV1 through pressure monitoring, realizing intelligent control of the depressurization process of cylinder 120. It can also manually control the cylinder's economic circuit by controlling the throttle solenoid valve SV1 via the cylinder depressurization button. The cylinder depressurization pipeline can also be understood as the cylinder's economic pipeline / circuit, and the corresponding throttle solenoid valve SV1 can be understood as the economic circuit solenoid valve.

[0057] based on Figure 2The optional cylinder pressure control system 110 may also include: a cryogenic inlet C1, a vent (return gas) connector C2, a vent (shutdown) valve Vv, an inlet check valve FCv, a level gauge LG, a secondary safety valve Svs, and a level transmitter Cb. Depending on the equipment, the structure of the cylinder pressure control system 110 is not limited to... Figure 2 As shown.

[0058] In this embodiment, the throttle solenoid valve SV1, the booster outlet solenoid valve SV2, and the supply solenoid valve SV3 in the gas cylinder pressure control system are all controlled by the vehicle controller, requiring no manual operation or on-site maintenance. It can also communicate with the vehicle controller via a mobile app, PDA, or PC to remotely monitor the operating status of the gas cylinder 120 in real time and perform online pressure adjustments. This gas cylinder pressure control system features fully intelligent monitoring and control. When the gas cylinder pressure is low, the booster pump automatically starts; when the internal pressure of the gas cylinder reaches the set value, the booster pump automatically stops. When the gas cylinder pressure is too high, the throttle solenoid valve SV1 is opened to reduce the gas cylinder pressure, achieving gas saving without driver intervention.

[0059] For any of the above embodiments of the device, the optional device further includes at least one of a display module and an alarm module; the device further includes a fault detection module, which is used to detect whether the device has malfunctioned; the vehicle controller is electrically connected to the display module, the alarm module and the fault detection module respectively, and is used to control the display module to display fault information and / or trigger the alarm module to alarm according to the fault information sent by the fault detection module.

[0060] In this embodiment, the equipment has a real-time monitoring system, specifically including a fault detection module, a display module, and an alarm module. The vehicle controller can receive various data on vehicle operation in real time, such as slope, vehicle speed, engine load, etc., and send commands to pipelines such as booster, fluid supply, and economy circuit. It also collects and analyzes the operating data and fault information of these pipelines and displays them on the vehicle's instrument panel. When the vehicle's cylinder pressure control system or other systems malfunction or require necessary operation, it can promptly remind or alarm the driver to stop and check, achieving real-time monitoring. Simultaneously, the vehicle controller has communication capabilities with the vehicle network. When various systems of the vehicle malfunction, the fault can be troubleshooted through the vehicle network. If the fault is caused by software, online debugging and repair can be performed through the vehicle network; if it is caused by hardware, the vehicle network can guide the customer to a service station for repair.

[0061] The device provided in this embodiment of the utility model adopts the gas cylinder pressure control system provided in any of the above embodiments. Taking a vehicle as an example, the device can automatically adjust and control the pressure of the vehicle's gas cylinder based on the different pressure requirements of the gas cylinder under different operating scenarios of the vehicle, without the need for manual operation by the user. The gas cylinder pressure control system is equipped with an expansion interface that can communicate with the vehicle. Based on the actual operating conditions of the vehicle, it analyzes information such as road slope, engine load rate, vehicle load, and gas cylinder liquid level to adjust and control the gas cylinder pressure in real time, meeting the vehicle's power and economy requirements while achieving the purpose of saving gas. Through the automatic control of each pipeline by the vehicle controller, functions such as automatic liquid dispensing, automatic shut-off, and emergency cut-off are realized; through the adjustment and control of the booster pipeline by the vehicle controller, boosting is achieved to meet the power output of the vehicle in different scenarios; through the adjustment and control of the gas cylinder economy pipeline by the vehicle controller, the internal pressure of the gas cylinder can be reduced to the maximum extent while meeting the power output, reducing exhaust loss due to vehicle parking; users can also manually control the throttle solenoid valve to force open the economy circuit to realize the function of gas cylinder depressurization. Furthermore, the real-time monitoring system displays fault and pressure information on the instrument panel, reminding users to operate appropriately. It can also feed back faults or fault codes to the vehicle's central control display, prompting the driver to perform timely maintenance, achieving real-time monitoring. Equipped with vehicle networking capabilities, it can remotely analyze faults and operating data, guiding users to rewrite data online and troubleshoot problems. Additionally, it features low-temperature warning and protection functions; in the event of a carburetor malfunction, it protects the booster pump from damage when the gas temperature is too low. The equipment has pressure increase and decrease adjustment functions, allowing for intelligent exhaust by opening the throttle solenoid valve when the gas cylinder is under high pressure, preventing economic losses for the user. Moreover, the gas cylinder supports a low-pressure operating mode, prioritizing the use of the gas fuel inside the cylinder to achieve pressure reduction or increase, enabling pressure adjustment and control based on the overall vehicle requirements.

[0062] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0063] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas cylinder pressure control system, characterized in that, Applied to equipment containing gas cylinders, including: A pressure detection component, a gas cylinder pressurization pipeline, and a gas cylinder depressurization pipeline are connected to the gas cylinder. The pressure detection component includes a pressure sensor, the gas cylinder pressurization pipeline includes a pressurization outlet solenoid valve, and the gas cylinder depressurization pipeline includes a gas-saving solenoid valve. The vehicle controller is electrically connected to the pressure sensor, the booster outlet solenoid valve, and the throttle solenoid valve, respectively. It is used to collect the pressure data of the gas cylinder through the pressure sensor and independently control the on / off state of the booster outlet solenoid valve and the throttle solenoid valve based on the pressure data of the gas cylinder.

2. The gas cylinder pressure control system according to claim 1, characterized in that, The gas cylinder pressurization pipeline includes: a pressurization outlet valve and a self-pressurization coil; The booster liquid outlet valve is located between the gas cylinder and the booster liquid outlet pipeline solenoid valve, and the booster liquid outlet pipeline solenoid valve is located between the booster liquid outlet valve and the self-boosting coil. The vehicle controller is used to open the booster outlet solenoid valve when the pressure data of the gas cylinder is lower than a first set value in self-boosting mode, or to close the booster outlet solenoid valve when the pressure data of the gas cylinder is higher than a second set value. The first set value is less than or equal to the second set value, and the booster outlet valve is in a normally open state.

3. The gas cylinder pressure control system according to claim 2, characterized in that, The gas cylinder pressurization pipeline includes: a first pressurization pump and a first one-way valve, wherein the first pressurization pump is located between the self-pressurization coil and the first one-way valve, and the first one-way valve is located between the first pressurization pump and the gas cylinder; The vehicle controller is electrically connected to the first booster pump and is used to open the booster outlet solenoid valve and operate the first booster pump when the pressure data of the gas cylinder is lower than a third set value in the auxiliary booster mode, or to close the booster outlet solenoid valve and the first booster pump when the pressure data of the gas cylinder is higher than a fourth set value, wherein the third set value is less than or equal to the fourth set value.

4. The gas cylinder pressure control system according to claim 1, characterized in that, The gas cylinder pressure control system includes: a gas cylinder liquid supply pipeline, wherein the gas cylinder liquid supply pipeline includes a vaporizer; The gas cylinder pressurization pipeline includes: a second pressurization pump and a second one-way valve, the second one-way valve being located between the second pressurization pump and the gas cylinder; the second pressurization pump is connected to the vaporizer; The vehicle controller is electrically connected to the second booster pump and is used to operate the second booster pump to extract steam from the carburetor when the pressure data of the gas cylinder is lower than a fifth set value in active boost mode, or to shut down the second booster pump when the pressure data of the gas cylinder is higher than a sixth set value, wherein the fifth set value is less than or equal to the sixth set value.

5. The gas cylinder pressure control system according to claim 3 or 4, characterized in that, The gas cylinder pressure control system includes: a gas cylinder liquid supply pipeline, and the gas cylinder liquid supply pipeline includes a temperature sensor; The vehicle controller is electrically connected to the temperature sensor and is used to control the booster pump to stop operating when the gas temperature in the gas cylinder supply line is detected to be lower than the set temperature value.

6. The gas cylinder pressure control system according to claim 1, characterized in that, The device includes an engine; The gas cylinder pressure control system includes: a gas cylinder liquid supply pipeline, the gas cylinder liquid supply pipeline includes a liquid supply pipeline solenoid valve and a buffer tank, the liquid supply pipeline solenoid valve is located between the gas cylinder and the buffer tank, and the buffer tank is connected to the gas supply pipeline of the engine; The vehicle controller is electrically connected to the liquid supply line solenoid valve, and is used to open the liquid supply line solenoid valve when the equipment is working, or to close the liquid supply line solenoid valve when the equipment is not running.

7. The gas cylinder pressure control system according to claim 6, characterized in that, The gas cylinder supply pipeline includes: a buffer tank pressure sensor, which is located between the buffer tank and the engine; The vehicle controller is electrically connected to the buffer tank pressure sensor, and is used to collect the air supply port pressure data of the engine through the buffer tank pressure sensor. When the air supply port pressure data of the engine meets the pressure change condition, the solenoid valve of the liquid supply line is closed.

8. The gas cylinder pressure control system according to claim 6, characterized in that, The gas cylinder liquid supply pipeline includes a first pipeline node and a liquid outlet check valve, wherein the liquid outlet check valve is located between the gas cylinder and the first pipeline node; The gas-saving solenoid valve is located between the gas cylinder and the output end of the gas cylinder pressure-reducing pipeline, and the output end of the gas cylinder pressure-reducing pipeline is connected to the first pipeline node. The vehicle controller is used to close the throttle solenoid valve when the pressure data of the gas cylinder is lower than the seventh set value, or to open the throttle solenoid valve when the pressure data of the gas cylinder is higher than the eighth set value and the gas cylinder supply line supplies air to the engine, wherein the seventh set value is less than or equal to the eighth set value.

9. A device, characterized in that, include: The gas cylinder pressure control system and gas cylinder according to any one of claims 1-8.

10. The device according to claim 9, characterized in that, The device includes: a step-down touch module; The vehicle controller is electrically connected to the step-down touch module and is used to control the on / off state of the throttle solenoid valve according to the step-down control command transmitted by the step-down touch module.

Images