Integrated vaporization and pressurization integrated device of LNG vehicle-mounted gas supply system

Abstract

The utility model relates to the technical field of LNG (liquefied natural gas) vehicle-mounted gas cylinder gas supply systems, in particular to an integrated vaporization and pressurization integrated device of an LNG vehicle-mounted gas supply system, which comprises a box body, a water bath vaporizer is fixedly connected to the inner bottom of the box body, and a liquid inlet pipe is arranged at the left end of the water bath vaporizer. The left end of the liquid inlet pipe horizontally penetrates through the box body and communicates with a liquid outlet pipe of the LNG storage bottle, a leakage detection part is arranged at the top of the box body and comprises a natural gas leakage detector, the natural gas leakage detector is installed at the inner top of the box body, an overflow valve is installed in the liquid inlet pipe, and a safety exhaust pipe is vertically arranged at the top end of the box body; according to the natural gas leakage detection device, natural gas leaked in the box body can be detected in time through the natural gas leakage detector, meanwhile, an electric signal is sent to the PLC so that the warning lamp can be turned on to remind people, and the safety in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG vehicle-mounted gas cylinder gas supply system, in particular to an integrated vaporization and pressurization integrated device of an LNG vehicle-mounted gas supply system. Background Art

[0002] With the enhancement of social environmental awareness, more and more cars are using environmentally friendly fuels as power fuel. Among them, the use of cars fueled by liquefied natural gas (LNG) is increasing due to its advantages such as low emissions, low pollution and low price.

[0003] After searching, it was found that the patent disclosed "an integrated vaporization and pressurization device for LNG vehicle-mounted gas supply system", and its application number is "201510306337.X". The patent includes a box body, in which a vaporization pipeline for vaporizing liquid natural gas for supplying the engine and a pressurization pipeline for pressurizing the LNG cylinder are arranged, and a mounting hole is arranged on the box body. The vaporization inlet and vaporization outlet of the vaporization pipeline and the pressurization inlet and pressurization outlet of the pressurization pipeline are all arranged on one side of the box body, and the vaporization inlet and the pressurization inlet are in the same direction, and the vaporization outlet and the pressurization outlet are in the same direction; a water inlet pipeline and a water outlet pipeline for connecting to the engine water pipe are arranged on the top of the box body, and a spray pipe is connected to the water inlet pipeline, which can achieve the dual functions of vaporization and pressurization at the same time. Its biggest advantage is its high degree of integration, which effectively solves the defects of the separate design of vaporization and pressurization, such as complex and intertwined pipelines but low heat exchange efficiency.

[0004] However, although the above patent is highly integrated and effectively solves the defects of the separate design of vaporization and pressurization, such as complex crisscrossing of pipelines but low heat exchange efficiency, it lacks the function of natural gas leakage detection during the gas supply process, resulting in the inability to timely detect natural gas leakage. There are certain safety hazards and the safety performance is average. Therefore, we propose an integrated vaporization and pressurization device for LNG on-board gas supply system to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an integrated vaporization and pressurization integrated device for an LNG vehicle-mounted gas supply system.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integrated vaporization and pressurization device of an LNG vehicle-mounted gas supply system, comprising a box body, a water bath vaporizer is fixedly connected to the inner bottom of the box body, a liquid inlet pipe is arranged at the left end of the water bath vaporizer, the left end of the liquid inlet pipe horizontally penetrates the box body and is connected with the liquid outlet pipe of the LNG storage bottle, a leakage detection component is arranged at the top of the box body, the leakage detection component comprises a natural gas leakage detector, the natural gas leakage detector is installed at the inner top of the box body, an overflow valve is installed inside the liquid inlet pipe, a safety exhaust pipe is vertically arranged at the top of the box body, an exhaust valve is installed inside the safety exhaust pipe, a PLC controller is fixedly connected to the top surface of the box body, a warning light is installed on the top surface of the box body, and the natural gas leakage detector and the warning light are both electrically connected to the PLC controller.

[0007] further:

[0008] The right end of the water bath vaporizer is provided with a gas filling pipe, the right end of the gas filling pipe penetrates the box body and is connected with the air intake pipe of the engine, and a pressure regulating valve is installed inside the gas filling pipe.

[0009] further:

[0010] A pressure stabilizer is installed inside the gas filling pipe, a pressure gauge is arranged on the top of the gas filling pipe, and the pressure stabilizer is located between the pressure regulating valve and the pressure gauge.

[0011] further:

[0012] A circulating water inlet is arranged on the top of the water bath evaporator, and a circulating water outlet is arranged on the top of the water bath evaporator. The top ends of the circulating water inlet and the circulating water outlet both vertically penetrate the box body and extend to the outside.

[0013] further:

[0014] A boosting pump is installed on the inner top of the box body, and a boosting pipe is connected to the output end of the boosting pump. The left end of the boosting pipe passes through the box body and is connected to the inside of the LNG storage bottle.

[0015] further:

[0016] A buffer component is provided at the bottom of the box body, and the buffer component includes a base. A damper is fixedly connected to the top surface of the base. There are multiple dampers, and the top ends of the multiple dampers are fixedly connected to the bottom surface of the box body. A mounting hole is vertically penetrated inside the base.

[0017] The utility model has the following beneficial effects:

[0018] 1. Compared with the prior art, the integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system has a leak detection component. When natural gas leaks from the box, the natural gas leak detector will use the resistance change data on the semiconductor surface to detect the concentration of the natural gas, thereby determining whether the natural gas is leaking. When a leak is detected, the warning light will be turned on through the PLC controller to remind people to deal with it in time. The specific operation can discharge the leaked natural gas inside the box through the exhaust valve and the safety exhaust pipe to avoid danger caused by excessive concentration, thereby eliminating safety hazards. Compared with the existing device, the function of leak detection of natural gas during the gas supply process is lacking, resulting in the inability to timely detect natural gas leaks, posing certain safety hazards, and the safety performance is average. The device can detect the natural gas leaking inside the box in time through the natural gas leak detector, and at the same time send an electrical signal to the PLC controller to light up the warning light to remind people, thereby improving the safety during use.

[0019] 2. Compared with the prior art, the integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system has a buffer component and a base fixed on the vehicle by bolts passing through the mounting holes. When severe vibration occurs, multiple dampers will absorb the vibration, thereby reducing the impact on the internal components of the box and improving the protection performance. The device can buffer and reduce vibration of the box to avoid damage to the device caused by severe vibration, thereby improving the protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model from a first perspective;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0022] Figure 3 This is a cross-sectional view of the box body of the utility model from the first perspective;

[0023] Figure 4 This is a cross-sectional view of the box body of the utility model from a second viewing angle.

[0024] Legend:

[0025] 100, housing; 200, water bath vaporizer; 210, liquid inlet pipe; 220, gas filling pipe; 230, pressure regulating valve; 240, voltage stabilizer; 250, pressure gauge; 260, circulating water inlet; 270, circulating water outlet; 300, leakage detection component; 310, natural gas leakage detector; 320, overflow valve; 330, safety exhaust pipe; 340, exhaust valve; 350, PLC controller; 360, warning light; 400, booster pump; 410, booster pipe; 500, buffer component; 510, base; 520, damper; 530, mounting hole. DETAILED DESCRIPTION

[0026] Reference Figure 1-4 The utility model provides an integrated vaporization and pressurization device for an LNG vehicle-mounted gas supply system, comprising a box body 100, a water bath vaporizer 200, a leakage detection component 300, a booster pump 400 and a buffer component 500.

[0027] The box body 100 is used to support and accommodate various components.

[0028] The water bath vaporizer 200 is used to convert LNG into gaseous natural gas. Specifically, the water bath vaporizer 200 is fixedly connected to the inner bottom of the box body 100, and a liquid inlet pipe 210 is provided at the left end of the water bath vaporizer 200. The left end of the liquid inlet pipe 210 horizontally penetrates the box body 100 and is connected to the liquid outlet pipe of the LNG storage bottle. A gas filling pipe 220 is provided at the right end of the water bath vaporizer 200, and the right end of the gas filling pipe 220 penetrates the box body 100 and is connected to the engine's intake pipe. A pressure regulating valve 230 is installed inside the gas filling pipe 220, and a pressure stabilizer 240 is installed inside the gas filling pipe 220. A pressure gauge 250 is provided on the top of the gas filling pipe 220, and the pressure stabilizer 240 is located between the pressure regulating valve 230 and the pressure gauge 250. A circulating water inlet 260 is provided on the top of the water bath vaporizer 200. A circulating water outlet 270 is provided at the top of the device 200, and the top ends of the circulating water inlet 260 and the circulating water outlet 270 both vertically penetrate the box body 100 and extend to the outside. When in use, the liquid natural gas in the LNG storage bottle will enter the interior of the water bath vaporizer 200 through the liquid inlet pipe 210, and the low-temperature liquid natural gas will be gasified into gaseous natural gas under the action of the water bath vaporizer 200. The principle is that hot water enters the interior of the water bath vaporizer 200 through the circulating water inlet 260 and is discharged from the circulating water outlet 270, and the hot water is used to exchange heat with the low-temperature liquid natural gas, and then the gaseous natural gas enters the engine through the gas filling pipe 220. The pressure regulating valve 230 is used to control the amount of gas entering the engine, the voltage stabilizer 240 is used to maintain the gas requirements of the engine, and the pressure gauge 250 is used to display the pressure in the gas cylinder.

[0029] The leakage detection component 300 can detect the natural gas leaking inside the box 100 in time. Specifically, the leakage detection component 300 includes a natural gas leakage detector 310, which is installed on the inner top of the box 100. An overflow valve 320 is installed inside the liquid inlet pipe 210. A safety exhaust pipe 330 is vertically arranged on the top of the box 100, and an exhaust valve 340 is installed inside the safety exhaust pipe 330. A PLC controller 350 is fixedly connected to the top surface of the box 100, and a warning light 360 is installed on the top surface of the box 100. The natural gas leakage detector 310 and the warning light 360 are connected to the PLC controller 350. 0 electrical connection, wherein the natural gas leak detector 310 can be an AC80-EX model or other models. When used specifically, when natural gas leaks from the box 100, the natural gas leak detector 310 will use the resistance change data on the semiconductor surface to detect the concentration of the natural gas, thereby determining whether the natural gas is leaking. When a leak is detected, the warning light 360 will be turned on through the PLC controller 350, thereby reminding people to deal with it in time. Specifically, the natural gas leaked from the box 100 can be discharged through the exhaust valve 340 and the safety exhaust pipe 330 to avoid danger caused by excessive concentration and eliminate safety hazards.

[0030] The boost pump 400 is used for feeding. Specifically, the boost pump 400 is installed on the inner top of the box body 100. The output end of the boost pump 400 is connected to the boost pipe 410. The left end of the boost pipe 410 passes through the box body 100 and is connected to the interior of the LNG storage bottle. When in use, the boost pump 400 will increase the pressure inside the LNG storage bottle through the boost pipe 410, so that the liquefied natural gas inside the LNG storage bottle enters the interior of the water bath vaporizer 200 from the liquid inlet pipe 210 for gasification.

[0031] The buffer component 500 can buffer and reduce vibration of the box body 100 to prevent damage to the device caused by severe vibration, thereby improving the protection performance. Specifically, the buffer component 500 includes a base 510, and a damper 520 is fixedly connected to the top surface of the base 510. There are multiple dampers 520, and the top ends of the multiple dampers 520 are fixedly connected to the bottom surface of the box body 100. A mounting hole 530 is vertically penetrated inside the base 510. When in use, the base 510 is fixed to the car by bolts penetrating the mounting hole 530. When severe vibration occurs, the multiple dampers 520 will absorb the vibration, thereby reducing the impact on the internal components of the box body 100 and improving the protection performance.

[0032] Working principle: In actual use, when natural gas leaks from the box 100, the natural gas leak detector 310 will use the resistance change data on the semiconductor surface to detect the concentration of natural gas, so as to determine whether the natural gas is leaking. When a leak is detected, the warning light 360 will be turned on through the PLC controller 350 to remind people to deal with it in time. The specific operation can discharge the leaked natural gas inside the box 100 through the exhaust valve 340 and the safety exhaust pipe 330 to avoid danger caused by excessive concentration and eliminate safety hazards. The base 510 is fixed to the car by bolts passing through the mounting hole 530. When severe vibration occurs, multiple dampers 520 will absorb the vibration, thereby reducing the impact on the internal components of the box 100 and improving the protection performance.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated vaporization and pressurization device for an LNG vehicle-mounted gas supply system, comprising a box (100), characterized in that: A water bath vaporizer (200) is fixedly connected to the inner bottom of the box (100), a liquid inlet pipe (210) is arranged at the left end of the water bath vaporizer (200), the left end of the liquid inlet pipe (210) horizontally penetrates the box (100) and is connected to the liquid outlet pipe of the LNG storage bottle, and a leakage detection component (300) is arranged on the top of the box (100), the leakage detection component (300) comprises a natural gas leakage detector (310), and the natural gas leakage detector (310) is installed inside the box (100). At the top, an overflow valve (320) is installed inside the liquid inlet pipe (210), a safety exhaust pipe (330) is vertically arranged at the top of the box body (100), an exhaust valve (340) is installed inside the safety exhaust pipe (330), a PLC controller (350) is fixedly connected to the top surface of the box body (100), a warning light (360) is installed on the top surface of the box body (100), and the natural gas leak detector (310) and the warning light (360) are both electrically connected to the PLC controller (350).

2. The integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system according to claim 1 is characterized in that: The right end of the water bath vaporizer (200) is provided with a gas filling pipe (220), the right end of the gas filling pipe (220) passes through the box (100) and is connected to the air intake pipe of the engine, and a pressure regulating valve (230) is installed inside the gas filling pipe (220).

3. The integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system according to claim 2 is characterized in that: A pressure stabilizer (240) is installed inside the gas filling pipe (220), a pressure gauge (250) is arranged on the top of the gas filling pipe (220), and the pressure stabilizer (240) is located between the pressure regulating valve (230) and the pressure gauge (250).

4. The integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system according to claim 1 is characterized in that: A circulating water inlet (260) is disposed at the top of the water bath evaporator (200), and a circulating water outlet (270) is disposed at the top of the water bath evaporator (200). The top ends of the circulating water inlet (260) and the circulating water outlet (270) both vertically penetrate the housing (100) and extend to the outside.

5. The integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system according to claim 1 is characterized in that: A boosting pump (400) is installed at the inner top of the box body (100), and the output end of the boosting pump (400) is connected to a boosting pipe (410), and the left end of the boosting pipe (410) passes through the box body (100) and is connected to the inside of the LNG storage bottle.

6. The integrated vaporization and pressurization device of the LNG vehicle-mounted gas supply system according to claim 1 is characterized in that: A buffer component (500) is provided at the bottom of the box body (100), and the buffer component (500) includes a base (510). A damper (520) is fixedly connected to the top surface of the base (510). There are multiple dampers (520), and the top ends of the multiple dampers (520) are fixedly connected to the bottom surface of the box body (100). A mounting hole (530) is vertically penetrated inside the base (510).

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