A safe and efficient methanol fuel supply device
Patent Information
- Application Number
- CN202521686899.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-08-08
AI Technical Summary
然而，传统的甲醇燃料供应装置普遍采用单向输送设计，即仅通过防爆泵将燃料从储罐经单一输液管路直接泵送至灶台燃烧器，这种单向输送模式在实际应用中存在显著的安全隐患和效率问题，一是灶台燃烧器的燃料消耗有限，防爆自吸泵持续的输送燃料容易造成单向输液管压力较大，这种异常压力不仅会加剧管路及连接件的疲劳，存在爆管或泄漏风险，安全隐患很大；二是在系统启动或运行过程中，罐体内空气，以及输液管内存在的空气很容易被吸入管路系统，空气混入液态甲醇燃料中会形成气阻，使用灶台点火时还需要通过喷嘴喷孔排出空气，灶台的喷嘴喷孔很小，等待时间会很长，会导致燃料输送不稳定、灶台点火困难、火焰忽大忽小甚至意外熄灭，这不仅影响灶具的正常工作和热效率，频繁的点火失败或火焰不稳定本身也是一个不容忽视的安全风险点，此外，传统甲醇燃料运输依赖大型罐体，需现场分装，存在泄漏风险和操作不便的问题，为此本申请提出一种安全高效的甲醇燃料供应装置来解决上述问题
[0014] The beneficial effects of this utility model are as follows:
Smart Images
Figure CN224706927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of methanol fuel safety technology, specifically a safe and efficient methanol fuel supply device. Background Technology
[0002] Methanol, as a clean and economical liquid fuel, is increasingly widely used in the catering industry (such as stoves) and industrial heating. However, traditional methanol fuel supply systems generally adopt a unidirectional delivery design, that is, fuel is directly pumped from the storage tank to the stove burner through a single liquid delivery pipeline via an explosion-proof pump. This unidirectional delivery mode has significant safety hazards and efficiency problems in practical applications. First, the fuel consumption of the stove burner is limited, and the continuous delivery of fuel by the explosion-proof self-priming pump can easily cause high pressure in the unidirectional liquid delivery pipeline. This abnormal pressure not only aggravates the fatigue of the pipeline and connecting parts, but also poses a risk of pipe bursting or leakage, resulting in significant safety hazards. Second, during system startup or operation, air in the tank and air present in the liquid delivery pipeline can easily be drawn into the pipeline system. Traditional methanol fuel supply systems often suffer from air resistance when mixed with liquid methanol. When igniting the stove, this air must be expelled through the nozzle orifice, which is very small, resulting in long waiting times. This leads to unstable fuel delivery, difficulty in igniting the stove, inconsistent flame size, and even accidental flameout. This not only affects the stove's normal operation and thermal efficiency, but the frequent ignition failures or unstable flames also pose a significant safety risk. Furthermore, traditional methanol fuel transportation relies on large tanks, requiring on-site repackaging, which presents leakage risks and operational inconveniences. Therefore, this application proposes a safe and efficient methanol fuel supply device to address these issues. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] In view of the shortcomings of the prior art, this utility model provides a safe and efficient methanol fuel supply device, which solves the technical problems mentioned in the background.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a safe and efficient methanol fuel supply device, comprising a tank body, with a liquid extraction port and a liquid return port symmetrically installed on the top of the tank body. The liquid extraction port is connected to one end of a liquid extraction pipe, and the other end of the liquid extraction pipe is connected to the inlet of an explosion-proof self-priming pump. The outlet of the explosion-proof self-priming pump is connected to one end of a delivery pipe, and the other end of the delivery pipe is connected to a T-connector. The other two ports of the T-connector are respectively connected to a liquid return pipe and a stove burner. The other end of the liquid return pipe is connected to a liquid return port. A liquid filling port is installed on the top of the tank body.
[0007] Preferably, the suction pipe, infusion pipe and return pipe are all explosion-proof pipes.
[0008] Preferably, the explosion-proof self-priming pump is electrically connected to the main control box of the stove burner, and the explosion-proof self-priming pump is controlled by the main control box and starts synchronously with the stove burner.
[0009] Preferably, the bottom pipes of both the liquid extraction port and the liquid return port extend to the bottom of the tank body.
[0010] Preferably, a flame-retardant breathing valve is also installed at the top of the tank.
[0011] Preferably, the extraction tube and the return tube are equipped with easy-to-disassemble connectors that connect with the extraction tube port and the return tube port, respectively.
[0012] Preferably, a safety pressure relief valve is installed on the liquid inlet.
[0013] (III) Beneficial Effects
[0014] The beneficial effects of this utility model are as follows:
[0015] This safe and efficient methanol fuel supply device ensures a normal fuel supply to the stove by connecting the delivery pipe and return pipe to the stove via a three-way pipe. It can also form a closed loop with the tank. When the pressure in the delivery pipe is too high, the excess methanol fuel output by the explosion-proof self-priming pump can flow back to the tank directly through the return pipe, releasing the liquid accumulated in the delivery pipe in real time. This completely avoids the problem of a surge in pipeline pressure caused by fuel vaporization or continuous pump operation, and significantly reduces safety hazards such as pipe bursts and leaks.
[0016] This safe and efficient methanol fuel supply device features an explosion-proof self-priming pump that is synchronously controlled by the stove burner when the device is started. Air in the pipeline can be synchronously transported back to the tank along with the methanol liquid, thus blocking air from entering the stove combustion end from the source. This completely solves problems such as unstable fuel delivery, ignition delay, flame fluctuation, and even accidental flameout caused by air resistance, significantly improving the stove's ignition efficiency and combustion stability. Furthermore, the device adopts a small, integrated tank design, eliminating the need for on-site repackaging and allowing for direct transportation and use. This reduces the risk of leakage during transportation and improves the convenience of loading, unloading, and relocation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;
[0018] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;
[0019] Figure 3 This is a schematic diagram of the fuel transport path structure within the pipeline according to this utility model.
[0020] In the diagram: 1. Tank body, 2. Liquid extraction port, 3. Liquid extraction pipe, 4. Explosion-proof self-priming pump, 5. Liquid delivery pipe, 6. T-connector, 7. Return pipe, 8. Quick-release connector, 9. Flame-retardant breather valve, 10. Return pipe port, 11. Safety pressure relief valve. Detailed Implementation
[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] like Figure 1-3As shown, this utility model provides a technical solution: a safe and efficient methanol fuel supply device, including a tank 1, which is under normal pressure and has a capacity of 30-50L. A liquid extraction port 2 and a liquid return port 10 are symmetrically installed at the top of the tank 1. A liquid filling port 8 is also installed at the top of the tank 1 for adding methanol fuel into the tank 1. A safety pressure relief valve 11 is installed on the liquid filling port 8. The bottom pipes of both the liquid extraction port 2 and the liquid return port 10 extend to the bottom of the tank 1. One end of the liquid extraction pipe 3 is connected to the liquid extraction port 2, and the other end of the liquid extraction pipe 3 is connected to the inlet of an explosion-proof self-priming pump 4. The outlet of the explosion-proof self-priming pump 4... Connect one end of the infusion tube 5, and the other end of the infusion tube 5 is connected to the tee pipe 6. The other two ports of the tee pipe 6 are connected to the return pipe 7 and the stove burner, respectively. Turn on the power to the main control box of the stove burner, and the explosion-proof self-priming pump 4 starts synchronously. Utilizing the suction of the explosion-proof self-priming pump 4, the circulation and return mechanism is started. The flow path of the methanol fuel is: extraction port 2 → extraction pipe 3 → explosion-proof self-priming pump 4 → infusion tube 5 → tee pipe 6. The other end of the return pipe 7 is connected to the return pipe port 10. Easy-to-disassemble connectors are installed on the extraction pipe 3 and the return pipe 7 to connect with the extraction pipe port 2 and the return pipe port 10. The easy-to-disassemble connectors facilitate the connection of the extraction pipe 3 and the return pipe 7 with the extraction pipe port 2 and the return pipe port 10. The return pipe port 10 can be connected or disconnected. The suction pipe 3 can also be connected to the return pipe port 10, and the return pipe 7 can also be connected to the suction pipe port 2. Both connections allow for fuel circulation between the suction pipe 3, the return pipe 7, and the tank 2. This allows for easy interchange of the return and discharge ports within the tank 1 without affecting its use. Initially, due to the small nozzle size of the stove, the three-way pipe 6 will preferentially guide fuel and any entrained air to the return pipe 7, forming a closed-loop circulation: tank 1 → suction pipe 3 → explosion-proof self-priming pump 4 → delivery pipe 5 → return pipe 7 → return pipe port 10 → tank 1. Air enters the tank 1, and after 1-2 seconds of circulation, the air in the pipeline... The system is fully emptied and filled with fuel. After the stove burner is ignited, the fuel delivered by the three-way pipe 6 to the burner ensures normal ignition of the stove. When the demand of the stove burner decreases, or during normal fuel supply, excess fuel will automatically flow back to the tank 1 through the return pipe 7 to avoid pressure buildup in the delivery pipe 5. The extraction pipe 3, delivery pipe 5, and return pipe 7 are all explosion-proof pipes, improving the safety of the device during use. The device breaks through the traditional unidirectional delivery mode by forming a circulation and return mechanism through the extraction pipe 3, delivery pipe 5, three-way pipe 6, and return pipe 7, and constructs a dynamic balance system for fuel delivery, simultaneously solving the problems of pressure buildup and air mixing.
[0023] The explosion-proof self-priming pump 4 is electrically connected to the main control box of the stove burner, and the explosion-proof self-priming pump 4 is controlled by the main control box to start synchronously with the stove burner. When the stove is turned on or off, the main control box synchronously controls the explosion-proof self-priming pump 4 to start or stop. When the main control box of the stove burner is turned on, the explosion-proof self-priming pump 4 starts synchronously. The explosion-proof self-priming pump 4 uses a suction start-up circulation reflux mechanism. A flame-retardant breather valve 9 is also installed at the top of the tank 1. The flame-retardant breather valve 9 can be used to allow outside air to enter the tank 1 to ensure the pressure balance inside the tank 1.
[0024] The operational steps for this application are as follows:
[0025] Check the liquid level in tank 1 to ensure sufficient methanol fuel; confirm that the flame-retardant breather valve 9 is open to maintain the gas pressure balance inside the tank; connect the easy-to-detach connector of the liquid extraction pipe 3 to the liquid extraction port 2; and firmly connect the easy-to-detach connector at the end of the return pipe 7 to the return pipe port 10 at the top of tank 1.
[0026] When the main control box of the stove burner is turned on, the explosion-proof self-priming pump 4 starts simultaneously. Utilizing the suction and circulation mechanism of the explosion-proof self-priming pump 4, the flow path of methanol fuel is: suction port 2 → suction pipe 3 → explosion-proof self-priming pump 4 → delivery pipe 5 → three-way pipe 6. In the initial stage, due to the small nozzle orifice of the stove, the three-way pipe 6 will preferentially guide the fuel and entrained air to the return pipe 7, forming a closed loop of tank 1 → suction pipe 3 → explosion-proof self-priming pump 4 → delivery pipe 5 → return pipe 7 → return pipe port 10 → tank 1. Air enters tank 1, and after 1-2 seconds of circulation, the air in the pipeline is purged, and the system is filled with fuel. After the stove burner is ignited, the fuel delivered by the three-way pipe 6 to the stove burner ensures normal ignition of the stove. When the demand of the stove burner decreases, or during normal fuel supply, excess fuel will automatically flow back to tank 1 through the return pipe 7, effectively preventing pressure buildup in the delivery pipe 5.
[0027] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A safe and efficient methanol fuel supply device, characterized in that: The tank (1) includes a tank body (1), on which a liquid extraction port (2) and a liquid return port (10) are symmetrically installed. The liquid extraction port (2) is connected to one end of a liquid extraction pipe (3), and the other end of the liquid extraction pipe (3) is connected to the inlet of an explosion-proof self-priming pump (4). The outlet of the explosion-proof self-priming pump (4) is connected to one end of a delivery pipe (5), and the other end of the delivery pipe (5) is connected to a three-way pipe (6). The other two ports of the three-way pipe (6) are connected to a liquid return pipe (7) and a stove burner, respectively. The other end of the liquid return pipe (7) is connected to the liquid return port (10). A liquid filling port (8) is installed on the top of the tank body (1).
2. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: The extraction pipe (3), infusion pipe (5) and return pipe (7) are all explosion-proof pipes.
3. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: The explosion-proof self-priming pump (4) is electrically connected to the main control box of the stove burner, and the explosion-proof self-priming pump (4) is controlled by the main control box and starts synchronously with the stove burner.
4. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: The bottom pipes of the extraction port (2) and the return port (10) both extend to the bottom of the tank body (1).
5. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: A flame-retardant breathing valve (9) is installed at the top of the tank (1).
6. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: The extraction tube (3) and return tube (7) are equipped with easy-to-disassemble connectors that connect with the extraction tube port (2) and return tube port (10).
7. The safe and efficient methanol fuel supply device according to claim 1, characterized in that: A safety pressure relief valve (11) is installed on the liquid filling port (8).