阅读说明：本技术 液化天然气回收控制系统及车辆 (Liquefied natural gas recovery control system and vehicle ) 是由 李敬文 郭俊婷 常鑫鹏 陶巍巍 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种液化天然气回收控制系统及车辆,所述液化天然气回收控制系统包括供气装置,用于提供液化天然气；脱附电磁阀；天然气吸附装置,所述天然气吸附装置的一端与所述供气装置连接,用于接收所述供气装置输出的液化天然气,所述天然气吸附装置的另一端通过所述脱附电磁阀与所述车辆的发动机连接,以在所述脱附电磁阀开启后,对所述液化天然气进行处理,并将处理得到的目标气体输送至所述发动机；控制器,与所述脱附电磁阀连接,用于控制所述脱附电磁阀开启。本发明将LNG气瓶排出的液化天然气进行吸附、储存、脱附及燃烧,将原本排放至大气中的天然气进行回收利用,在节能减排上有着重大贡献。(The invention discloses a liquefied natural gas recovery control system and a vehicle, wherein the liquefied natural gas recovery control system comprises a gas supply device, a liquefied natural gas recovery device and a liquefied natural gas recovery control device, wherein the gas supply device is used for supplying liquefied natural gas; a desorption electromagnetic valve; one end of the natural gas adsorption device is connected with the gas supply device and used for receiving the liquefied natural gas output by the gas supply device, and the other end of the natural gas adsorption device is connected with an engine of the vehicle through the desorption electromagnetic valve so as to process the liquefied natural gas after the desorption electromagnetic valve is opened and convey a target gas obtained by processing to the engine; and the controller is connected with the desorption electromagnetic valve and is used for controlling the desorption electromagnetic valve to be opened. The LNG gas cylinder provided by the invention can be used for adsorbing, storing, desorbing and burning the liquefied natural gas discharged from the LNG gas cylinder, and recycling the natural gas originally discharged into the atmosphere, thereby making a great contribution to energy conservation and emission reduction.)

1. A lng recovery control system for a vehicle, the system comprising:

a gas supply unit for supplying liquefied natural gas;

a desorption electromagnetic valve;

one end of the natural gas adsorption device is connected with the gas supply device and used for receiving the liquefied natural gas output by the gas supply device, and the other end of the natural gas adsorption device is connected with an engine of the vehicle through the desorption electromagnetic valve so as to process the liquefied natural gas after the desorption electromagnetic valve is opened and convey a target gas obtained by processing to the engine;

and the controller is connected with the desorption electromagnetic valve and is used for controlling the desorption electromagnetic valve to be opened.

2. The lng recovery control system according to claim 1, wherein the gas supply device includes:

an LNG cylinder for storing the liquefied natural gas;

the safety valve is arranged at a port of the LNG cylinder;

when the pressure in the LNG gas cylinder reaches the set pressure of the safety valve, the liquefied natural gas stored in the LNG gas cylinder is output through the safety valve.

3. The lng recovery control system of claim 1 or 2, wherein the controller is specifically configured to:

and when the engine is detected to be started, controlling the desorption electromagnetic valve to be opened.

4. The lng recovery control system of claim 3, wherein the controller is configured to supply power to the desorption solenoid valve to control the desorption solenoid valve to be opened.

5. The lng recovery control system according to claim 1, wherein an inside of the natural gas adsorption device is filled with an adsorbent material to adsorb the lng.

6. The lng recovery control system of claim 5, wherein the adsorbent material comprises activated carbon.

7. The liquefied natural gas recovery control system according to claim 5 or 6, wherein the natural gas adsorption device is provided with a vent, and after the desorption solenoid valve is opened, air enters the interior of the natural gas adsorption device through the vent to flush and desorb the liquefied natural gas, so as to output the target gas.

8. The lng recovery control system according to claim 5 or 6, wherein the target gas is methane.

9. The lng recovery control system of claim 1, wherein the controller is configured as an engine controller.

10. A vehicle characterized by comprising the liquefied natural gas recovery control system according to any one of claims 1 to 9.

Technical Field

The invention relates to the field of recovery of vent gas of a liquefied natural gas device, in particular to a liquefied natural gas recovery control system and a vehicle.

Background

Current LNG (liquid Natural Gas, Liquefied Natural Gas) motorcycle type, park for a long time because of the vehicle, Natural Gas pressure will continuously rise in its Gas cylinder, when pressure surpassed the pressure that the Gas cylinder relief valve set for, the relief valve will open automatically and carry out the pressure release, so that high-pressure Natural Gas passes through the direct atmosphere of discharging of relief valve in the Gas cylinder, thereby the protection Gas cylinder, prevent to cause the damage because of the overpressure to the Gas cylinder, this kind of design is with safety as the main objective, but there is serious air pollution hidden danger, the fuel also can be wasted simultaneously. How to reduce LNG motorcycle type relief valve to external natural gas emission to make full use of discharged natural gas is the problem that needs to solve at present urgently.

Disclosure of Invention

Aiming at the problems, the invention provides a liquefied natural gas recovery control system, which is used for adsorbing, storing, desorbing and combusting liquefied natural gas discharged from an LNG (liquefied natural gas) bottle of a vehicle so as to achieve the purposes of energy conservation and emission reduction.

In order to achieve the above object, a liquefied natural gas recovery control system according to an embodiment of the present invention includes:

a gas supply unit for supplying liquefied natural gas;

a desorption electromagnetic valve;

one end of the natural gas adsorption device is connected with the gas supply device and used for receiving the liquefied natural gas output by the gas supply device, and the other end of the natural gas adsorption device is connected with an engine of the vehicle through the desorption electromagnetic valve so as to process the liquefied natural gas after the desorption electromagnetic valve is opened and convey a target gas obtained by processing to the engine;

and the controller is connected with the desorption electromagnetic valve and is used for controlling the desorption electromagnetic valve to be opened.

In addition, a liquefied natural gas recovery control system according to an embodiment of the present invention may further have the following additional technical features:

further, the gas supply device comprises an LNG gas cylinder for storing the liquefied natural gas;

further, the safety valve is arranged at a port of the LNG cylinder; when the pressure in the LNG gas cylinder reaches the set pressure of the safety valve, the liquefied natural gas stored in the LNG gas cylinder is output through the safety valve.

Further, the controller is specifically configured to control the desorption solenoid valve to be opened when engine start is detected.

Further, the controller is also used for supplying power to the desorption electromagnetic valve so as to control the desorption electromagnetic valve to be opened.

Further, the inside of the natural gas adsorption device is filled with an adsorption substance to adsorb the liquefied natural gas.

Further, the adsorbent material comprises activated carbon.

Further, natural gas adsorption equipment is provided with the blow vent desorption solenoid valve opens the back, and the air passes through the blow vent gets into inside the natural gas adsorption equipment, in order to right liquefied natural gas washes the desorption, exports target gas.

Further, the target gas is methane.

Further, the controller is configured as an engine controller.

In order to solve the existing problems, the invention provides a vehicle, namely the vehicle comprises a liquefied natural gas recovery control system, and the liquefied natural gas discharged from a vehicle LNG cylinder is adsorbed, stored, desorbed and combusted through the liquefied natural gas recovery control system, so that the purposes of energy conservation and emission reduction are achieved.

The invention has prominent substantive features and remarkable progress:

(1) the natural gas adsorption device can adsorb, store and desorb the natural gas discharged by the gas supply device, and is a device capable of repeatedly adsorbing and desorbing.

(2) The desorption electromagnetic valve is completely closed-loop controlled by the engine controller, so that the work of the liquefied natural gas recovery control system is cooperated with the work and emission conditions of the engine, the operation can be optimized under the condition of not influencing power and emission, and the energy conservation and emission reduction to the maximum extent are realized.

(3) The natural gas discharged by the gas supply device is adsorbed and stored, and is desorbed and combusted under specific conditions, so that the liquefied natural gas originally discharged into the atmosphere is recycled, the problems of greenhouse gas discharge from vehicles into the atmosphere and energy waste are solved, the design defects of the current LNG vehicle type are overcome, and the energy-saving and emission-reducing device has great contribution.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic block diagram of an LNG recovery control system according to an embodiment of the present invention;

fig. 2 is a schematic configuration diagram of an lng recovery control system according to another embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

A lng recovery control system and a vehicle according to an embodiment of the present invention will be described with reference to fig. 1 to 2.

Fig. 1 is a schematic configuration diagram of an lng recovery control system according to an embodiment of the present invention. As shown in fig. 1, the lng recovery control system 100 includes: the gas supply device 110, the desorption electromagnetic valve 120, the natural gas adsorption device 130 and the controller 140.

The gas supply device 110 is used to supply liquefied natural gas.

One end of the natural gas adsorption device 130 is connected to the gas supply device 110 for receiving the liquefied natural gas output by the gas supply device 110, and the other end of the device is connected to the engine 200 of the vehicle through the desorption solenoid valve 120, so that after the desorption solenoid valve 120 is opened, the liquefied natural gas is treated, and the treated target gas is delivered to the engine 200.

The controller 140 is connected to the desorption solenoid valve 120 and is configured to control the desorption solenoid valve 120 to open.

In an embodiment of the present invention, the desorption solenoid valve 120 is a common solenoid component, and is an electrically controllable switch device, which is used to control the connection and disconnection between the engine 200 and the pipeline of the lng recovery control system 100. When the power is on, the desorption solenoid valve 120 is opened, and when the power is off, the desorption solenoid valve 120 is automatically closed, and the action of the desorption solenoid valve is completely controlled by the controller 140. The controller 140 performs comprehensive judgment according to the current working condition of the vehicle and the sensor signals of each part of the engine 200 to control whether the desorption electromagnetic valve 120 is opened and the opening time, the opening degree and the like, so that the lng recovery control system 100 and the engine 200 work and discharge conditions are cooperated with each other, the operation can be optimized under the condition that neither power nor discharge is influenced, and the maximum energy saving is realized.

In one embodiment of the present invention, as shown in fig. 2, the Gas supply 110 includes a LNG (Liquefied Natural Gas) cylinder 111 and a safety valve 112. The LNG tank 111 is used to store the liquefied natural gas. The safety valve 112 is arranged at the port of the LNG cylinder 111; when the pressure in the LNG tank 111 reaches the set pressure of the safety valve 112, the liquefied natural gas stored in the LNG tank 111 is discharged through the safety valve 112.

In one embodiment of the present invention, when the engine 200 is shut down, the desorption solenoid valve 120 is closed and the system is not operating; alternatively, when the pressure in the LNG tank 111 is lower than the pressure set by the relief valve 112, no LNG is discharged to the natural gas adsorption device 130, and the supply of gas to the outside is stopped.

In one embodiment of the present invention, the controller 140 is specifically configured to control the desorption solenoid valve 120 to open when the start of the engine 200 is detected. Specifically, the controller 140 may detect the state of the engine 200 through relevant sensors provided on the engine 200; alternatively, the controller 140 may determine the start state of the engine 200 by detecting a start signal of the engine 200, for example, determining that the engine 200 is started when the start signal of the engine 200 is detected.

In one embodiment of the present invention, the controller 140 is configured to supply power to the desorption solenoid valve 120 to control the desorption solenoid valve 120 to open.

In one embodiment of the present invention, the interior of the natural gas adsorption device 130 is filled with an adsorbent material to adsorb the liquefied natural gas.

In one embodiment of the invention, the adsorbent material comprises activated carbon.

In an embodiment of the present invention, as shown in fig. 2, the natural gas adsorption device 130 is provided with a vent 131, and after the desorption solenoid valve 120 is opened, air enters the natural gas adsorption device 130 through the vent 131 to flush and desorb the liquefied natural gas, and the target gas is output.

In one embodiment of the invention, the target gas is methane.

In the embodiment, taking the adsorbing substance as activated carbon as an example, when natural gas molecules enter the natural gas adsorbing device 130, liquefied natural gas is adsorbed in pores on the surface of the activated carbon. When the controller 140 controls the desorption electromagnetic valve 120 to open, because there is a pressure difference between the engine 200 and the vent 131 of the natural gas adsorption device 130, the liquefied natural gas in the natural gas adsorption device 130 can smoothly complete the desorption process, i.e. the methane molecules adsorbed on the surface of the activated carbon powder are desorbed by the high-speed airflow and enter the engine 200 along with the airflow through the pipeline for combustion, so as to realize desorption and combustion.

In one embodiment of the present invention, the controller 140 is configured as an engine controller.

In an embodiment, the LNG recovery Control system 100 may be composed of an LNG tank 111, a natural gas adsorption device 130, a safety valve 112, a desorption solenoid valve 120, and an engine controller, such as an engine ECU (Electronic Control Unit). The specific operation principle of the lng recovery control system 100 is summarized as follows: when the pressure in the vehicle LNG tank 111 reaches the set pressure of the safety valve 112, the liquefied natural gas enters the natural gas adsorption device 130 through the safety valve 112 to be adsorbed and stored. When the engine 200 is started, the engine controller controls the desorption electromagnetic valve 120 to be opened, and negative pressure generated by an air inlet pipe of the engine 200 is introduced into the whole system. Because pressure difference exists between the engine 200 and the vent 131 of the natural gas adsorption device 130, air enters the natural gas adsorption device 130 through the vent 131, so that liquefied natural gas in the natural gas adsorption device 130 is flushed and desorbed, a desorbed liquefied natural gas and air mixture enters the engine 200 through the desorption electromagnetic valve 120 to be combusted, finally, the desorption electromagnetic valve 120 is controlled to be closed by the engine controller, so that a cycle of adsorption, storage, desorption and combustion is completed, and the whole liquefied natural gas recovery control system 100 is controlled in a closed loop mode by the engine controller, so that the purposes of energy conservation and emission reduction are achieved.

In this liquefied natural gas recovery control system 100, natural gas adsorption device 130 can carry out the absorption, store and desorption of natural gas, be a device that can repeatedly adsorb and desorb, its inside generally fills material such as active carbon (use filling active carbon as an example below), when natural gas molecule gets into the device by the absorption in the hole on active carbon surface, when desorption solenoid valve 120 opened, make desorption process go on smoothly because the pressure differential of engine 200 and natural gas adsorption device 130 end, high-speed air current will adsorb the methane molecule on powdered carbon surface and deviate from, finally get into engine 200 along with the air current through the pipeline and burn, realize the desorption promptly.

The desorption electromagnetic valve 120 is a common electromagnetic element, is an electrically controllable switch device, and aims to control the on-off of the engine 200 and the pipeline of the whole natural gas recovery control system, when the electromagnetic valve is switched on and switched off, the electromagnetic valve is automatically switched off, the action of the electromagnetic valve is completely controlled by the engine ECU, the engine ECU can comprehensively judge according to the current working condition and signals of various sensors, and control whether the electromagnetic valve is switched on, the switching-on time, the switching-off opening degree and the like, so that the working and discharging conditions of the natural gas recovery control system and the engine 200 are completely integrated, and the natural gas recovery control system and the engine 200 work under the condition of not influencing power and discharging.

Therefore, the lng recovery control system 100 can repeatedly perform adsorption, storage and desorption of natural gas, and the desorption solenoid valve 120 is completely closed-loop controlled by the engine ECU, so that the system and the engine 200 cooperate with each other, thereby achieving maximum energy conservation and emission reduction. The liquefied natural gas recovery control system 100 according to the embodiment of the invention has the following beneficial effects:

(1) the natural gas adsorption device 130 of the present invention can adsorb, store and desorb the natural gas discharged from the gas supply device 110, and is a device capable of repeatedly adsorbing and desorbing.

(2) The desorption electromagnetic valve 120 is completely closed-loop controlled by the controller 140 of the engine 200, so that the work of the liquefied natural gas recovery control system 100 is cooperated with the work and emission condition of the engine 200, the operation can be optimized under the condition of not influencing power and emission, and the energy conservation and emission reduction to the maximum extent are realized.

(3) The natural gas discharged by the gas supply device 110 is adsorbed and stored, and is desorbed and combusted under specific conditions, so that the liquefied natural gas originally discharged into the atmosphere is recycled, the problems of greenhouse gas discharge from vehicles into the atmosphere and energy waste are solved, the design defects of the current LNG vehicle type are overcome, and the energy-saving and emission-reducing device has great contribution.

A further embodiment of the invention also discloses a vehicle. The vehicle includes an lng recovery control system 100 as described in any of the above embodiments of the present invention.

Therefore, when the vehicle performs lng recovery control, the specific implementation manner of the vehicle is similar to the specific implementation manner of the lng recovery control system 100 described in any one of the above embodiments of the present invention, and for the specific implementation manner of the vehicle, please refer to the description portion of the lng recovery control system 100, which is not described herein again to reduce redundancy.

Therefore, according to the vehicle provided by the embodiment of the invention, the following beneficial effects can be realized:

(1) the natural gas adsorption device can adsorb, store and desorb the natural gas discharged by the gas supply device, and is a device capable of repeatedly adsorbing and desorbing.

(2) The desorption electromagnetic valve is completely closed-loop controlled by the engine controller, so that the work of the liquefied natural gas recovery control system is cooperated with the work and emission conditions of the engine, the operation can be optimized under the condition of not influencing power and emission, and the energy conservation and emission reduction to the maximum extent are realized.

(3) The natural gas discharged by the gas supply device is adsorbed and stored, and is desorbed and combusted under specific conditions, so that the liquefied natural gas originally discharged into the atmosphere is recycled, the problems of greenhouse gas discharge from vehicles into the atmosphere and energy waste are solved, the design defects of the current LNG vehicle type are overcome, and the energy-saving and emission-reducing device has great contribution.

In addition, other configurations and functions of the vehicle according to the above-described embodiment of the present invention are known to those skilled in the art, and are not described in detail in order to reduce redundancy.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.