Fuel supply system

Abstract

The utility model relates to a fuel supply system, it relates to fuel supply field, it includes storage tank, delivery mechanism and heat supply mechanism, delivery mechanism includes vaporizer, buffer tank and delivery pipe, vaporizer's inlet end is communicated with storage tank's outlet end, vaporizer's outlet end is communicated with buffer tank's inlet end, and delivery pipe is communicated with the delivery pipe's inlet end. One end of the delivery pipe is communicated with the outlet end of the buffer tank, and the outlet end of the delivery pipe is communicated with an oil inlet of an engine or a range extender; the heat supply mechanism comprises a first pipeline and a second pipeline, the first end of the first pipeline communicates with a cooling loop in the engine or the range extender, the second end of the first pipeline communicates with the inlet end of a vaporization loop of the vaporizer, and the first end of the second pipeline communicates with the cooling loop in the engine or the range extender. The second end of the second pipeline communicates with the outlet end of a vaporization loop of the vaporizer. According to the utility model, the problems of insufficient vaporization and large pressure fluctuation during fuel supply can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fuel supply especially a fuel supply system. BACKGROUND

[0002] With the increasingly stringent environmental protection requirements and the adjustment of energy structure, liquefied natural gas (LNG) as a kind of clean and efficient energy, in the field of automobile, ship and so on, more and more widely used.

[0003] LNG fuel supply system is the key system that LNG is converted from storage state to the gas state available to engine, and stably supplies the engine combustion.

[0004] However, this scheme has the following problems: vaporization is insufficient: LNG needs to be vaporized before entering the engine, and the traditional scheme is often insufficient, which leads to unstable engine combustion and affects engine performance. SUMMARY

[0005] In order to solve the problem of insufficient vaporization and large pressure fluctuation during LNG fuel supply, the utility model provides a fuel supply system.

[0006] The utility model provides a fuel supply system, adopts the following technical scheme:

[0007] A fuel supply system, comprising a storage tank, a conveying mechanism and a heat supply mechanism, the conveying mechanism comprising a vaporizer, a buffer tank and a conveying pipe, the inlet end of the vaporizer is in communication with the outlet end of the storage tank, the outlet end of the vaporizer is in communication with the inlet end of the buffer tank, one end of the conveying pipe is in communication with the outlet end of the buffer tank, and the outlet end of the conveying pipe is in communication with the oil inlet of the engine or the range extender.

[0008] The heat supply mechanism comprises a first pipeline and a second pipeline, the first end of the first pipeline is in communication with the cooling circuit in the engine or the range extender, the second end of the first pipeline is in communication with the inlet end of the vaporization circuit of the vaporizer, the first end of the second pipeline is in communication with the cooling circuit in the engine or the range extender, and the second end of the second pipeline is in communication with the outlet end of the vaporization circuit of the vaporizer.

[0009] By adopting the technical scheme, the system can effectively transport the fuel from the storage tank to the engine through the combination of the vaporizer, the buffer tank and the conveying pipe. The design of the heat supply mechanism utilizes the cooling circuit of the engine or the range extender to provide heat for the vaporizer, improves the energy utilization efficiency of the system, reduces the additional energy consumption, and ensures that the LNG is fully vaporized in the vaporizer. The setting of the buffer tank can effectively alleviate the pressure fluctuation and ensure that the fuel pressure in the conveying pipe remains stable, avoiding the influence of pressure fluctuation on the normal work of the engine.

[0010] Optionally, an adjusting valve is arranged on the first pipeline.

[0011] By adopting the technical scheme, the adjusting valve arranged on the first pipeline can accurately control the flow of the cooling liquid flowing to the vaporizer, thereby adjusting the heating effect of the vaporizer, ensuring the stability of fuel vaporization, and improving the controllability and adaptability of the system.

[0012] Optionally, the heat supply mechanism further comprises a temperature sensor, which is arranged on the first pipeline and electrically connected with the adjusting valve.

[0013] By adopting the technical scheme, the temperature sensor can monitor the temperature of the first pipeline in real time, and through the electrical signal connection with the adjusting valve, the flow of the cooling liquid can be automatically adjusted, so as to ensure that the working temperature of the vaporizer is within the optimal range, thereby improving the automation level and operation efficiency of the system.

[0014] Optionally, the heat supply mechanism further comprises a heater, which is in communication with the vaporization circuit of the vaporizer through a pipeline, and electrically connected with the temperature sensor.

[0015] By adopting the technical scheme, the heater further enhances the heating capacity of the vaporizer, especially when the heat provided by the cooling circuit of the engine or the range extender is insufficient, the heater can supplement the heat to ensure the full vaporization of the fuel, thereby improving the reliability and adaptability of the system.

[0016] Optionally, the conveying mechanism further comprises a first pressure regulating valve, which is arranged on the conveying pipe.

[0017] By adopting the technical scheme, the first pressure regulating valve arranged on the conveying pipe can adjust the conveying pressure of the fuel, so as to ensure that the fuel is conveyed to the engine at a stable pressure, avoid the influence of pressure fluctuation on the work of the engine, and improve the operation stability and efficiency of the engine.

[0018] Optionally, the conveying mechanism further comprises an air pressure sensor, which is arranged in the buffer tank and electrically connected with the first pressure regulating valve.

[0019] By adopting the technical scheme, the gas pressure sensor is arranged in the buffer tank, the gas pressure in the buffer tank can be monitored in real time, the pressure of the delivery pipe can be automatically adjusted through the electrical signal connection with the first pressure regulating valve, the low pressure or high pressure condition is reduced, the stability of fuel delivery is ensured, and the safety and reliability of the system are improved.

[0020] Optionally, the delivery mechanism further comprises a buzzer, the buzzer is arranged on the buffer tank, and the buzzer is in electrical signal communication with the gas pressure sensor.

[0021] By adopting the technical scheme, the buzzer is in electrical signal connection with the gas pressure sensor, when the gas pressure in the buffer tank is abnormal, for example, air leakage occurs in the buffer tank, the buzzer can issue an alarm to remind the operator to handle in time, the system is prevented from malfunctioning due to abnormal gas pressure, and the safety of the system is improved.

[0022] Optionally, the delivery mechanism further comprises a second pressure regulating valve, the second pressure regulating valve is arranged on the pipeline between the buffer tank and the vaporizer, and the second pressure regulating valve is in communication with the gas pressure sensor.

[0023] By adopting the technical scheme, the second pressure regulating valve is arranged on the pipeline between the buffer tank and the vaporizer, the delivery pressure of fuel can be further adjusted, the delivery pressure is dynamically adjusted according to the gas pressure in the vaporizer, the fuel pressure in the vaporizer is ensured to be stable, the vaporization effect is prevented from being affected by pressure fluctuation, and the stability and reliability of the system are improved.

[0024] Optionally, the delivery mechanism further comprises a filter, and the filter is arranged on the delivery pipe between the first pressure regulating valve and the oil inlet of the engine or the range extender.

[0025] By adopting the technical scheme, the filter is arranged on the delivery pipe between the first pressure regulating valve and the oil inlet of the engine or the range extender, impurities in fuel can be effectively filtered, impurities are prevented from entering the engine, the normal work of the engine is protected, and the service life of the engine is prolonged.

[0026] Optionally, a guard plate is fixedly installed on one side of the storage tank.

[0027] By adopting the technical scheme, the guard plate is fixedly installed on one side of the storage tank, the storage tank is protected from external impact or damage, the safety of the storage tank is improved, and the service life of the system is prolonged.

[0028] In summary, the utility model has at least one of the following beneficial technical effects:

[0029] 1. The adjustment valve and temperature sensor are arranged on the first pipeline, which can accurately control the flow of cooling liquid flowing to the vaporizer in the cooling circuit, and ensure the stability of the heating effect of the vaporizer. At the same time, the addition of the heater further enhances the vaporization capacity, especially in low temperature or high load working conditions, which ensures that the LNG fuel is fully vaporized, and avoids the problem of engine efficiency reduction or engine stall caused by insufficient vaporization.

[0030] 2. The linkage control of the buffer tank combined with the gas pressure sensor and the first pressure regulating valve can effectively alleviate the pressure fluctuation in the fuel delivery process, and ensure that the fuel pressure in the delivery pipe remains stable. The addition of the second pressure regulating valve further refines the pressure regulation range, ensures that the fuel pressure is stable during delivery, reduces the influence of pressure fluctuation on engine operation, and improves the stability and reliability of the system.

[0031] 3. The introduction of temperature sensor and gas pressure sensor enables the system to monitor the working state of the vaporizer and buffer tank in real time, and realizes automatic adjustment through electrical signal connection with the adjustment valve, forming a closed loop control. The setting of the buzzer further enhances the safety of the system, which can timely alarm when the gas pressure is abnormal, reminding the operator to handle, and preventing system failure.

[0032] 4. The filter arranged on the delivery pipe can effectively filter impurities in the fuel, prevent impurities from entering the engine, protect the normal operation of the engine and prolong its service life. The side-mounted guard plate of the storage tank provides additional physical protection, avoiding the storage tank from being impacted or damaged externally, and improving the overall safety and durability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the overall structure schematic diagram of the embodiment of the utility model;

[0034] Figure 2 is the structure schematic diagram of the delivery mechanism and the heat supply mechanism.

[0035] Mark explanation: 100, storage tank; 200, delivery mechanism; 210, vaporizer; 220, buffer tank; 230, delivery pipe; 240, first pressure regulating valve; 250, gas pressure sensor; 260, buzzer; 270, second pressure regulating valve; 280, filter; 300, heat supply mechanism; 310, first pipeline; 320, second pipeline; 330, adjustment valve; 340, heater; 350, temperature sensor; 400, guard plate. DETAILED DESCRIPTION

[0036] The following will be combined with the reference to the drawings Figure 1 and the drawings Figure 2The technical solutions in the embodiments of the present application are clearly and completely described, and obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0038] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0039] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0041] The embodiments of the present application disclose a fuel supply system. Referring to the accompanying Figure 1 and the accompanying Figure 2The fuel supply system mainly comprises a storage tank 100, a delivery mechanism 200 and a heat supply mechanism 300. The delivery mechanism 200 comprises a vaporizer 210, a buffer tank 220 and a delivery pipe 230. The inlet end of the vaporizer 210 is in communication with the outlet end of the storage tank 100. The outlet end of the vaporizer 210 is in communication with the inlet end of the buffer tank 220. One end of the delivery pipe 230 is in communication with the outlet end of the buffer tank 220. The outlet end of the delivery pipe 230 is in communication with the oil inlet of the engine. The heat supply mechanism 300 comprises a first pipeline 310 and a second pipeline 320. The first end of the first pipeline 310 is in communication with the cooling circuit of the engine or the range extender. The second end of the first pipeline 310 is in communication with the inlet end of the vaporization circuit of the vaporizer 210. The first end of the second pipeline 320 is in communication with the cooling circuit of the engine or the range extender. The second end of the second pipeline 320 is in communication with the outlet end of the vaporization circuit of the vaporizer 210.

[0042] Through the combination of the vaporizer 210, the buffer tank 220 and the delivery pipe 230, the system can effectively deliver the fuel from the storage tank 100 to the engine. The design of the heat supply mechanism 300 utilizes the cooling circuit of the engine or the range extender to provide heat for the vaporizer 210, improves the energy utilization efficiency of the system, reduces the additional energy consumption, and ensures that the LNG is fully vaporized in the vaporizer 210. The setting of the buffer tank 220 can effectively alleviate the pressure fluctuation, ensure that the fuel pressure in the delivery pipe 230 remains stable, and avoid affecting the normal work of the engine due to pressure fluctuation.

[0043] In some embodiments, an adjusting valve 330 is arranged on the first pipeline 310. The arrangement of the adjusting valve 330 on the first pipeline 310 can accurately control the flow of the cooling liquid flowing to the vaporizer 210 from the cooling circuit, thereby adjusting the heating effect of the vaporizer 210, ensuring the stability of fuel vaporization, and improving the controllability and adaptability of the system.

[0044] In some embodiments, the heat supply mechanism 300 further comprises a temperature sensor 350 arranged on the first pipeline 310. The temperature sensor 350 is in electrical signal connection with the adjusting valve 330. The arrangement of the temperature sensor 350 enables the system to monitor the temperature of the first pipeline 310 in real time, and through the electrical signal connection with the adjusting valve 330, the flow of the cooling liquid can be automatically adjusted, ensuring that the working temperature of the vaporizer 210 is within the optimal range, and improving the automation level and operation efficiency of the system.

[0045] In some embodiments, the heat supply mechanism 300 further comprises a heater 340, which is in communication with the vaporization circuit of the vaporizer 210 through a pipeline, and the heater 340 is in electrical signal communication with the temperature sensor 350. The addition of the heater 340 further enhances the heating capacity of the vaporizer 210, especially when the heat provided by the engine or the range extender cooling circuit is insufficient, the heater 340 can supplement the heat to ensure the sufficient vaporization of the fuel, and improve the reliability and adaptability of the system.

[0046] In some embodiments, the delivery mechanism 200 further comprises a first pressure regulating valve 240, which is arranged on the delivery pipe 230. Arranging the first pressure regulating valve 240 on the delivery pipe 230 can adjust the delivery pressure of the fuel, ensure that the fuel is delivered to the engine at a stable pressure, avoid the influence of pressure fluctuations on the operation of the engine, and improve the operation stability and efficiency of the engine.

[0047] In some embodiments, the delivery mechanism 200 further comprises an air pressure sensor 250, which is arranged in the buffer tank 220, and the air pressure sensor 250 is in electrical signal communication with the first pressure regulating valve 240. Arranging the air pressure sensor 250 in the buffer tank 220 can monitor the air pressure in the buffer tank 220 in real time, and automatically adjust the pressure of the delivery pipe 230 through the electrical signal connection with the first pressure regulating valve 240, reduce the occurrence of low pressure or high pressure, ensure the stability of fuel delivery, and improve the safety and reliability of the system.

[0048] In some embodiments, the delivery mechanism 200 further comprises a buzzer 260, which is arranged on the buffer tank 220, and the buzzer 260 is in electrical signal communication with the air pressure sensor 250. The buzzer 260 is in electrical signal connection with the air pressure sensor 250, and when the air pressure in the buffer tank 220 is abnormal, such as air leakage in the buffer tank 220, the buzzer 260 can issue an alarm to remind the operator to handle it in time, prevent the system from malfunctioning due to abnormal air pressure, and improve the safety of the system.

[0049] In some embodiments, the delivery mechanism 200 further comprises a second pressure regulating valve 270, which is arranged on the pipeline between the buffer tank 220 and the vaporizer 210, and the second pressure regulating valve 270 is in communication with the air pressure sensor 250. Arranging the second pressure regulating valve 270 on the pipeline between the buffer tank 220 and the vaporizer 210 can further adjust the delivery pressure of the fuel, dynamically adjust the delivery pressure according to the air pressure in the vaporizer 210, ensure the stability of the fuel pressure in the vaporizer 210, avoid the influence of pressure fluctuations on the vaporization effect, and improve the stability and reliability of the system.

[0050] In some embodiments, the conveying mechanism 200 further comprises a filter 280 arranged on the conveying pipe 230 between the first pressure regulating valve 240 and the oil inlet of the engine or the range extender. Arranging the filter 280 on the conveying pipe 230 between the first pressure regulating valve 240 and the oil inlet of the engine or the range extender can effectively filter impurities in the fuel and prevent the impurities from entering the engine, thereby protecting the normal operation of the engine and prolonging the service life of the engine.

[0051] In some embodiments, a guard plate 400 is fixedly installed on one side of the storage tank 100. Fixing the guard plate 400 on one side of the storage tank 100 can protect the storage tank 100 from external impact or damage, improve the safety of the storage tank 100, and prolong the service life of the system.

[0052] The implementation principle of the fuel supply system according to an embodiment of the present application is as follows:

[0053] Through the synergistic effect of the heat supply mechanism 300, the heater 340 and the temperature sensor 350, the LNG fuel is fully vaporized, and the problem of insufficient vaporization is solved. The combination design of the buffer tank 220, the air pressure sensor 250 and the multi-stage pressure regulating valve effectively alleviates the pressure fluctuation and ensures the stable fuel conveying pressure. The closed-loop control of the temperature sensor 350, the air pressure sensor 250 and the regulating valve realizes the automatic adjustment and real-time monitoring of the system, and improves the automation level and safety of the system. The addition of the filter 280 and the guard plate 400 further improves the reliability and durability of the system and prolongs the service life of the equipment.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fuel supply system characterized by comprising: The device comprises a storage tank (100), a delivery mechanism (200) and a heat supply mechanism (300), the delivery mechanism (200) comprises a vaporizer (210), a buffer tank (220) and a delivery pipe (230), the inlet end of the vaporizer (210) is communicated with the outlet end of the storage tank (100), the outlet end of the vaporizer (210) is communicated with the inlet end of the buffer tank (220), one end of the delivery pipe (230) is communicated with the outlet end of the buffer tank (220), and the outlet end of the delivery pipe (230) is communicated with the oil inlet of an engine or a range extender. The heat supply mechanism (300) comprises a first pipeline (310) and a second pipeline (320), the first end of the first pipeline (310) is communicated with the cooling circuit in the engine or the range extender, the second end of the first pipeline (310) is communicated with the inlet end of the vaporization circuit of the vaporizer (210), the first end of the second pipeline (320) is communicated with the cooling circuit in the engine or the range extender, and the second end of the second pipeline (320) is communicated with the outlet end of the vaporization circuit of the vaporizer (210).

2. A fuel supply system according to claim 1, characterized in that: An adjusting valve (330) is arranged on the first pipeline (310).

3. A fuel supply system according to claim 2, characterised in that: The heat supply mechanism (300) further comprises a temperature sensor (350), the temperature sensor (350) is arranged on the first pipeline (310), and the temperature sensor (350) is electrically connected with the adjusting valve (330).

4. A fuel supply system according to claim 3, characterized in that: The heat supply mechanism (300) further comprises a heater (340), the heater (340) is communicated with the vaporization circuit of the vaporizer (210) through a pipeline, and the heater (340) is electrically connected with the temperature sensor (350).

5. The fuel supply system according to claim 1, characterized by: The delivery mechanism (200) further comprises a first pressure regulating valve (240), and the first pressure regulating valve (240) is arranged on the delivery pipe (230).

6. A fuel supply system according to claim 5, characterized in that: The delivery mechanism (200) further comprises an air pressure sensor (250), the air pressure sensor (250) is arranged in the buffer tank (220), and the air pressure sensor (250) is electrically connected with the first pressure regulating valve (240).

7. A fuel supply system according to claim 6, characterised in that: The delivery mechanism (200) further comprises a buzzer (260), the buzzer (260) is arranged on the buffer tank (220), and the buzzer (260) is electrically connected with the air pressure sensor (250).

8. A fuel supply system according to claim 6, characterized in that: The delivery mechanism (200) further comprises a second pressure regulating valve (270), and the second pressure regulating valve (270) is arranged on the pipeline between the buffer tank (220) and the vaporizer (210) and is communicated with the air pressure sensor (250).

9. The fuel supply system according to claim 5, characterized by: The delivery mechanism (200) further comprises a filter (280), and the filter (280) is arranged on the delivery pipe (230) between the first pressure regulating valve (240) and the oil inlet of the engine or the range extender.

10. The fuel supply system according to claim 1, characterized by: A guard plate (400) is fixedly arranged on one side of the storage tank (100).

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