Hydrogen energy commercial vehicle expansion water tank system

Abstract

The utility model relates to hydrogen energy commercial vehicle field especially relates to a kind of hydrogen energy commercial vehicle expansion water tank system, including water tank body;Multiple horizontal baffles are arranged inside gas-liquid separation cavity staggeredly, and the upper end of each horizontal baffle is respectively spaced apart and provided with multiple inclined baffles.The utility model has the beneficial effects that: by the inside of expansion water tank being provided with gas-liquid separation cavity and liquid storage cavity, and by the inside of gas-liquid separation cavity being staggeredly provided with horizontal baffle and the inclined baffle being arranged on the upper end thereof, gas-liquid efficient separation can be realized, and the pressure change in expansion water tank is monitored by pressure sensor, the pressure in tank is dynamically regulated by electric pressure relief valve, maintains ±0.05bar fluctuation range, and the intelligent temperature control system in liquid storage cavity can start heating mode according to ambient temperature, and the circulating pump is started after coolant is preheated, to avoid fuel cell low-temperature operation, effectively prolong the service life of fuel cell.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen-powered commercial vehicles, and in particular to an expansion tank system for hydrogen-powered commercial vehicles. Background Technology

[0002] During operation, hydrogen fuel cell commercial vehicles generate a significant amount of heat from the fuel cell stack, requiring thermal management through a coolant circulation system. Traditional expansion tanks have the following drawbacks:

[0003] 1. Poor adaptability to pressure fluctuations, which can easily lead to coolant vaporization or leakage; 2. Inability to match dynamic operating conditions in real time (such as vehicle start-stop, load changes), resulting in low thermal management efficiency. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0005] An expansion tank system for hydrogen-powered commercial vehicles, comprising a tank body;

[0006] The interior of the water tank is designed with two layers, an air-liquid separation chamber and a liquid storage chamber that are interconnected.

[0007] A water inlet pipe is installed on the upper part of one side of the gas-liquid separation chamber. Multiple horizontal guide plates are arranged alternately inside the gas-liquid separation chamber. Multiple inclined guide plates are arranged at intervals on the upper end of each horizontal guide plate. The upper end of the inclined guide plates is set on the side facing the direction of coolant flow. A pressure sensor and an electric pressure relief valve are also installed on the upper end of the gas-liquid separation chamber away from the water inlet pipe.

[0008] A water outlet pipe is installed at the lower part of the liquid storage chamber on the side away from the water inlet pipe, and an intelligent temperature control system is installed at the bottom of the liquid storage chamber.

[0009] As a further embodiment of this utility model: the intelligent temperature control system includes a temperature sensor located in the middle of the bottom of the liquid storage chamber, and a semiconductor temperature controller is provided on the side of the liquid storage chamber near the water outlet pipe.

[0010] As a further embodiment of this invention, a magnetic filter is provided on the inner wall between the gas-liquid separation chamber and the liquid storage chamber.

[0011] As a further embodiment of this utility model: a liquid level sensor is also provided on the inner wall of the liquid storage chamber, and a replenishment pipe is provided on the upper part of the liquid storage chamber near the water inlet pipe.

[0012] As a further embodiment of this utility model, the outer ends of the inlet pipe, outlet pipe, and replenishment pipe are respectively provided with connecting valves.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a gas-liquid separation chamber and a liquid storage chamber inside the expansion tank, and by staggering the horizontal guide plates and the inclined guide plates at the upper end of the gas-liquid separation chamber, efficient gas-liquid separation can be achieved. The pressure sensor monitors the gas pressure change inside the expansion tank, and the electric pressure relief valve dynamically adjusts the pressure inside the tank to maintain a fluctuation range of ±0.05 bar. The intelligent temperature control system in the liquid storage chamber can start the heating mode according to the ambient temperature to preheat the coolant before starting the circulation pump, avoiding low-temperature operation of the fuel cell and effectively extending the service life of the fuel cell.

[0014] Additional aspects and advantages of this 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. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] The diagram shows: 1. Water tank body; 2. Gas-liquid separation chamber; 3. Liquid storage chamber; 4. Water inlet pipe; 5. Horizontal guide plate; 6. Angled guide plate; 7. Pressure sensor; 8. Electric pressure relief valve; 9. Water outlet pipe; 10. Temperature sensor; 11. Semiconductor temperature controller; 12. Magnetic filter; 13. Liquid level sensor; 14. Liquid replenishment pipe; 15. Connecting valve. Detailed Implementation

[0018] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please see Figure 1 A hydrogen-powered commercial vehicle expansion tank system, comprising a tank body 1;

[0023] The interior of the water tank body 1 is configured as two layers, with the gas-liquid separation chamber 2 and the liquid storage chamber 3 connected to each other.

[0024] A water inlet pipe 4 is provided on the upper part of one side of the gas-liquid separation chamber 2. Multiple horizontal guide plates 5 are arranged vertically inside the gas-liquid separation chamber 2. Multiple inclined guide plates 6 are arranged at intervals on the upper end of each horizontal guide plate 5. The upper end of the inclined guide plates 6 is arranged on the side facing the direction of coolant advance. A pressure sensor 7 and an electric pressure relief valve 8 are also provided on the upper end of the side of the gas-liquid separation chamber 2 away from the water inlet pipe 4.

[0025] A water outlet pipe 9 is provided at the lower part of the liquid storage chamber 3 on the side away from the water inlet pipe 4, and an intelligent temperature control system is provided at the bottom of the liquid storage chamber 3.

[0026] Connect the inlet pipe 4 and outlet pipe 9 to the cooling pipe. When the coolant returns to the gas-liquid separation chamber 2 after cooling treatment, the internally staggered horizontal guide plates 5 and the upper inclined guide plates 6 enable efficient gas-liquid separation. The pressure sensor 7 monitors the pressure changes in the expansion tank, and the electric pressure relief valve 8 dynamically adjusts the pressure in the tank to maintain a fluctuation range of ±0.05 bar. The intelligent temperature control system in the liquid storage chamber 3 can start the heating mode according to the ambient temperature to preheat the coolant before starting the circulation pump, avoiding low-temperature operation of the fuel cell and effectively extending the service life of the fuel cell.

[0027] A further solution: The intelligent temperature control system includes a temperature sensor 10 located in the middle of the bottom of the liquid storage chamber 3, and a semiconductor temperature controller 11 located on the side of the liquid storage chamber 3 near the water outlet pipe 9.

[0028] Temperature sensor 10 can monitor the temperature of coolant in reservoir 3; during vehicle cold start, vehicle controller activates semiconductor thermostat 11 according to ambient temperature to preheat coolant before coolant circulation, thus preventing fuel cell from operating at low temperature; when coolant temperature rises, semiconductor thermostat 11 cools coolant.

[0029] A further solution: A magnetic filter 12 is installed on the inner wall between the gas-liquid separation chamber 2 and the liquid storage chamber 3.

[0030] It can adsorb metal particles in the coolant.

[0031] A further solution: A liquid level sensor 13 is also installed on the inner wall of the liquid storage chamber 3, and a replenishment pipe 14 is installed on the upper part of the liquid storage chamber 3 near the water inlet pipe 4.

[0032] It can ensure that there is a certain amount of coolant in the liquid storage chamber 3, and avoid the coolant from overheating and vaporizing, which would lead to insufficient coolant and reduced cooling efficiency.

[0033] A further solution: Connecting valves 15 are installed at the outer ends of the inlet pipe 4, outlet pipe 9, and replenishment pipe 14 respectively.

[0034] It can be easily connected to coolant pipes.

[0035] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An expansion tank system for hydrogen-powered commercial vehicles, characterized in that: Including the water tank body (1); The interior of the water tank body (1) is configured as two layers, with the gas-liquid separation chamber (2) and the liquid storage chamber (3) connected to each other. A water inlet pipe (4) is provided on the upper part of one side of the gas-liquid separation chamber (2). Multiple horizontal guide plates (5) are arranged vertically inside the gas-liquid separation chamber (2). Multiple inclined guide plates (6) are arranged at intervals on the upper end of each horizontal guide plate (5). The upper end of the inclined guide plate (6) is arranged on the side facing the direction of coolant flow. A pressure sensor (7) and an electric pressure relief valve (8) are also provided on the upper end of the side of the gas-liquid separation chamber (2) away from the water inlet pipe (4). A water outlet pipe (9) is provided at the lower part of the liquid storage chamber (3) on the side away from the water inlet pipe (4), and an intelligent temperature control system is provided at the bottom of the liquid storage chamber (3).

2. The hydrogen-powered commercial vehicle expansion tank system according to claim 1, characterized in that: The intelligent temperature control system includes a temperature sensor (10) located in the middle of the bottom of the liquid storage chamber (3), and a semiconductor temperature controller (11) is provided on the side of the liquid storage chamber (3) near the water outlet pipe (9).

3. The hydrogen-powered commercial vehicle expansion tank system according to claim 1, characterized in that: A magnetic filter (12) is provided on the inner wall between the gas-liquid separation chamber (2) and the liquid storage chamber (3).

4. The hydrogen-powered commercial vehicle expansion tank system according to claim 1, characterized in that: A liquid level sensor (13) is also installed on the inner wall of the liquid storage chamber (3), and a replenishment pipe (14) is installed on the upper part of the liquid storage chamber (3) near the water inlet pipe (4).

5. The hydrogen-powered commercial vehicle expansion tank system according to claim 4, characterized in that: The outer ends of the inlet pipe (4), outlet pipe (9), and replenishment pipe (14) are respectively equipped with connecting valves (15).

Images