Tail gas detection device for hydrogen fuel cell automobile

Abstract

The utility model relates to a hydrogen fuel cell automobile tail gas detection device which comprises a box body and a detection assembly, a gas inlet and a gas outlet are formed in the surface of the box body, a flow divider is arranged in the box body, and an input port of the flow divider is communicated with the gas inlet; the detection assembly is arranged in the box body; the detection assembly comprises a first sensor, a second sensor and an electromagnetic valve, the air inlet end of the first sensor is communicated with the output port of the flow divider, and the air outlet end of the first sensor is communicated with the air outlet; the input end of the electromagnetic valve is communicated with the output port of the flow divider, the output end of the electromagnetic valve is communicated with the air inlet end of the second sensor, and the air outlet end of the second sensor is communicated with the air outlet; the range of the first sensor is greater than that of the second sensor; and the electromagnetic valve is electrically connected with the second sensor. The hydrogen concentration detector can detect different hydrogen concentrations, and is wide in application range and more accurate in measured value. And a small-range sensor can be protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas detection technical field especially is a kind of hydrogen fuel cell vehicle tail gas detection device. BACKGROUND

[0002] Hydrogen fuel cell as a kind of emerging energy provides power for automobile, compared with traditional automobile, pure electric car is more green and environmental protection, but hydrogen gas as a kind of combustible gas, concentration reaches certain degree and there is danger, thus the concentration of hydrogen gas in automobile exhaust needs to be detected.

[0003] The tail gas detection device in prior art is mostly single large range or single small range, wherein the detection accuracy of small range is higher.When the detection concentration of tail gas does not match the range of detection device, on the one hand, it will lead to inaccurate detection value, on the other hand, if the tail gas with large concentration passes through the detection device with small range, it will damage the small range detection sensor and affect the accuracy of subsequent detection. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model wants to overcome the defect that the prior art cannot be applied to multiple tail gas detection.

[0005] To solve the above technical problems, the utility model provides a kind of hydrogen fuel cell vehicle tail gas detection device, comprising: box and detection component, the surface of the box is provided with inlet and outlet, the inside of the box is provided with shunt, the input of the shunt is communicated with the inlet;The detection component is arranged in the inside of the box;

[0006] The detection component includes first sensor, second sensor and electromagnetic valve, the gas inlet end of the first sensor is communicated with the output of the shunt, and the gas outlet end of the first sensor is communicated with the outlet;The input of the electromagnetic valve is communicated with the output of the shunt, and the output of the electromagnetic valve is communicated with the gas inlet end of the second sensor, and the gas outlet end of the second sensor is communicated with the outlet;The range of the first sensor is greater than the range of the second sensor;The electromagnetic valve is electrically connected with the second sensor.

[0007] In an embodiment of the utility model, water separator is arranged between the inlet and the input of the shunt.

[0008] In an embodiment of the utility model, it further includes drainage assembly, and the drainage assembly includes water pump, first check valve and second check valve, the water inlet end of the water pump is communicated with the liquid discharge port of the water separator, the first check valve is arranged between the water pump and the water separator, and the second check valve is arranged at the water outlet end of the water pump.

[0009] In one embodiment of the utility model, the box surface is equipped with a drain, and the drain is arranged opposite to the water outlet end of the water pump.

[0010] In one embodiment of the utility model, a third check valve is arranged between the first sensor and the shunt, and a fourth check valve is arranged between the first sensor and the air outlet.

[0011] In one embodiment of the utility model, a first diaphragm pump is arranged between the second sensor and the air outlet, and a fifth check valve is further arranged between the first diaphragm pump and the air outlet.

[0012] In one embodiment of the utility model, the detection assembly further comprises a second diaphragm pump, an input end of the second diaphragm pump is communicated with the shunt, and an output end of the second diaphragm pump is communicated with the air outlet.

[0013] In one embodiment of the utility model, a sixth check valve is arranged between the second diaphragm pump and the air outlet.

[0014] In one embodiment of the utility model, a temperature control assembly is further included, the temperature control assembly comprises a temperature sensor, a heater and a temperature controller, the temperature sensor and the heater are arranged inside the box, and the temperature controller is arranged on the surface of the box; the temperature controller is electrically connected with the temperature sensor and the heater respectively.

[0015] In one embodiment of the utility model, an axial flow fan is arranged on the end face of the heater, and a ventilation opening is arranged on the side of the box away from the heater.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The hydrogen fuel cell vehicle tail gas detection device has the advantages that two sensors with different ranges are arranged in the utility model, the hydrogen concentration of tail gas is detected, the detection of different hydrogen concentrations can be realized by increasing the electromagnetic valve on the small-range sensor, the range is wide, the measured value is more accurate, and the small-range sensor can be protected. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to the specific embodiments of the utility model and in combination with the drawings, wherein

[0019] Figure 1 is a structural schematic view of the box of the utility model;

[0020] Figure 2is a structure schematic view of the box body inside of the utility model;

[0021] Figure 3 is a partial structure schematic view of the detection assembly of the utility model;

[0022] Figure 4 is the work flow chart of the utility model;

[0023] The description of the drawing of the specification is as follows: 1, box body;2, air inlet;3, air outlet;4, flow divider;5, first sensor;6, second sensor;7, electromagnetic valve;8, steam-water separator;9, water pump;10, first check valve;11, second check valve;12, third check valve;13, fourth check valve;14, fifth check valve;15, sixth check valve;16, drain;17, first diaphragm pump;18, second diaphragm pump;19, temperature sensor;20, heater;21, temperature controller;22, axial flow fan;23, vent. Specific implementation

[0024] The utility model is further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0025] Refer to Figures 1-4 The utility model discloses a hydrogen fuel cell automobile tail gas detection device, include: box body 1 and detection assembly, the box body 1 surface is provided with air inlet 2 and air outlet 3, the box body 1 inside is provided with flow divider 4, the input of flow divider 4 with air inlet 2 intercommunication;Detection assembly sets up in the box body 1 inside;

[0026] The detection assembly includes first sensor 5, second sensor 6 and electromagnetic valve 7, the air inlet of first sensor 5 with the output of flow divider 4 intercommunication, the air outlet of first sensor 5 with air outlet 3 intercommunication;The input of electromagnetic valve 7 with the output of flow divider 4 intercommunication, the output of electromagnetic valve 7 with the air inlet of second sensor 6 intercommunication, the air outlet of second sensor 6 with air outlet 3 intercommunication;The range of first sensor 5 is greater than the range of second sensor 6;Electromagnetic valve 7 and second sensor 6 electricity are connected.

[0027] The utility model discloses a detection assembly of tail gas is integrated in the box 1 inside, the surface of box 1 is provided with air inlet 2 and gas outlet 3, air inlet 2 is used for with the detection of tail gas and is passed in, and the gas of after discharge is used for the discharge of detection. The first sensor 5 and second sensor 6 in the utility model are used for detecting hydrogen concentration, wherein the first sensor 5 is large range detection module, and the second sensor 6 is small range detection module. Specifically, gas enters first sensor 5 and second sensor 6 respectively from the flow divider 4 and carries out detection, and an electromagnetic valve 7 is arranged between the second sensor 6 and the flow divider 4, because the range of the second sensor 6 is small but the precision is high, when detecting that hydrogen concentration in tail gas exceeds the range of itself, the second sensor 6 feedback signal, and the electromagnetic valve 7 closes and cuts off this passage, to this to protect the second sensor 6. At this time, hydrogen concentration is detected by the first sensor 5, when the concentration is low and does not exceed the range, the hydrogen concentration value is provided by the second sensor 6 with high precision.

[0028] The utility model discloses the built-in two-way different range sensor to the hydrogen concentration of tail gas carries out detection, through increasing electromagnetic valve 7 on the sensor of small range, can realize the detection of different hydrogen concentration, can adapt to wide range, and the measured value is more accurate. And can protect the sensor of small range.

[0029] Further, the air inlet 2 and the input port of the flow divider 4 are provided with a steam-water separator 8.

[0030] As a preferred scheme of the utility model, the steam-water separator 8 is composed of an oil mist separator and a micro-mist separator, which can effectively separate impurities and water in the tail gas, avoiding the influence of water vapor on subsequent detection elements. The tail gas passing through the steam-water separator 8 enters the flow divider 4.

[0031] Further, it further includes a drainage assembly, the drainage assembly includes a water pump 9, a first check valve 10 and a second check valve 11, the water inlet end of the water pump 9 is communicated with the liquid discharge port of the steam-water separator 8, the first check valve 10 is arranged between the water pump 9 and the steam-water separator 8, and the second check valve 11 is arranged at the water outlet end of the water pump 9.

[0032] Specifically, the moisture generated after the steam-water separator 8 is filtered through the first check valve 10, and the water is discharged to the water outlet end through the second check valve 11 by the water pump 9. The first check valve 10 prevents the backflow of the discharged water into the steam-water separator 8, and the second check valve 11 prevents the entry of external water vapor into the equipment. As a preferred scheme of the utility model, the surface of the box 1 is provided with a drain port 16, and the drain port 16 is arranged opposite to the water outlet end of the water pump 9. The moisture generated by the steam-water separator 8 is discharged outside the equipment.

[0033] Further, a third one-way valve 12 is arranged between the first sensor 5 and the flow divider 4, and a fourth one-way valve 13 is arranged between the first sensor 5 and the gas outlet 3.

[0034] Specifically, the third one-way valve 12 prevents the detection gas flow from being sucked back into the flow divider 4, thereby affecting the accuracy of the detection result of the first sensor 5, and the fourth one-way valve 13 is connected to the gas outlet 3 to prevent external water vapor from entering the first sensor 5.

[0035] Further, a first diaphragm pump 17 is arranged between the second sensor 6 and the gas outlet 3, and a fifth one-way valve 14 is arranged between the first diaphragm pump 17 and the gas outlet 3.

[0036] Specifically, the first diaphragm pump 17 is arranged between the second sensor 6 and the gas outlet 3 to provide power for the second sensor 6 to detect the gas, so that the gas can be sucked into the second sensor 6 for detection. Since the inlet 2 of the second detector is provided with an electromagnetic valve 7, it functions as a one-way valve to prevent the gas flow from being sucked back into the flow divider 4. Similarly, the fifth one-way valve 14 can prevent external water vapor from entering the second sensor 6. The first sensor 5 is provided with a diaphragm pump, which can provide power support for the detection of the first sensor 5.

[0037] Further, the detection assembly further comprises a second diaphragm pump 18, an input end of the second diaphragm pump 18 being in communication with the flow divider 4, and an output end of the second diaphragm pump 18 being in communication with the gas outlet 3. A sixth one-way valve 15 is arranged between the second diaphragm pump 18 and the gas outlet 3.

[0038] Specifically, the second diaphragm pump 18 provides auxiliary power for the detection of the gas, sucks the gas at the inlet 2 into the flow divider 4, and facilitates the input of the gas for the detection of the first sensor 5 and the second sensor 6.

[0039] Further, a temperature control assembly is further included, the temperature control assembly comprising a temperature sensor 19, a heater 20 and a temperature controller 21, the temperature sensor 19 and the heater 20 being arranged inside the box 1, and the temperature controller 21 being arranged on the surface of the box 1; the temperature controller 21 being electrically connected to the temperature sensor 19 and the heater 20, respectively.

[0040] Specifically, the device is further provided with a heater 20 for increasing the temperature inside the device, and a high-precision temperature controller 21 is further provided, which, through a temperature sensor 19 module, realizes the controllable temperature inside the device, so that the hydrogen sensor can be normally used in extremely low-temperature environment in winter.

[0041] Further, the end surface of the heater 20 is provided with an axial flow fan 22, and the side of the box body 1 away from the heater 20 is provided with a ventilation opening 23.

[0042] Specifically, the temperature of the heater 20 is dissipated to the entire inside of the box body 1 through the axial flow fan 22, so as to improve the temperature inside the box body 1, and the hot air is discharged through the ventilation opening 23.

[0043] In addition, the top of the box body 1 is provided with a box cover which is hinged to the box body 1, and the surface of the box cover is provided with a display screen for observing real-time data of detection, and the surface and the side wall of the box body 1 are both provided with a handle for facilitating carrying and moving of the entire device. The inside of the device is also provided with a heater 20 for improving the temperature inside the device, and is also provided with a high-precision temperature controller 21, so as to realize controllable temperature inside the device through a temperature sensor 19 module, so that the hydrogen sensor can also be normally used in an extremely low-temperature environment in winter.

[0044] In summary, the utility model introduces a hydrogen fuel cell vehicle exhaust detection device, the utility model discloses two different range sensors built-in detect the hydrogen concentration of exhaust, through increasing electromagnetic valve 7 on the small range sensor can realize the detection of different hydrogen concentration, can adapt to a wide range, and the measured value is more accurate. And can protect the small range sensor. The inside of the device is also provided with a heater 20 for improving the temperature inside the device, and is also provided with a high-precision temperature controller 21, so as to realize controllable temperature inside the device through a temperature sensor 19 module, so that the hydrogen sensor can also be normally used in an extremely low-temperature environment in winter.

[0045] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A hydrogen fuel cell vehicle exhaust detection device characterized by comprising: The utility model relates to a kind of water quality detection device, including: Box and detection component, the box surface is provided with air inlet and air outlet, the box interior is provided with flow divider, the input of the flow divider is communicated with the air inlet;The detection component is arranged in the box interior; The detection component includes first sensor, second sensor and electromagnetic valve, the air inlet of the first sensor is communicated with the output of the flow divider, the air outlet of the first sensor is communicated with the air outlet;The input of the electromagnetic valve is communicated with the output of the flow divider, the output of the electromagnetic valve is communicated with the air inlet of the second sensor, the air outlet of the second sensor is communicated with the air outlet;The range of the first sensor is greater than the range of the second sensor;The electromagnetic valve is electrically connected with the second sensor.

2. The hydrogen fuel cell vehicle exhaust detection device of claim 1, wherein: Air and water separator is arranged between the air inlet and the input of the flow divider.

3. The hydrogen fuel cell vehicle exhaust detection device of claim 2, wherein: It further includes drainage assembly, the drainage assembly includes water suction pump, first check valve and second check valve, the water inlet of the water suction pump is communicated with the liquid outlet of the air and water separator, first check valve is arranged between the water suction pump and air and water separator, and the second check valve is arranged at the water outlet of the water suction pump.

4. The hydrogen fuel cell vehicle exhaust detection device of claim 3, wherein: Drainage port is opened in the surface of the box, and the drainage port is arranged opposite the water outlet of the water suction pump.

5. The hydrogen fuel cell vehicle exhaust detection device of claim 1, wherein: Third check valve is arranged between the first sensor and the flow divider, and fourth check valve is arranged between the first sensor and the air outlet.

6. The hydrogen fuel cell vehicle exhaust detection device of claim 1, wherein: First diaphragm pump is arranged between the second sensor and the air outlet, and fifth check valve is further arranged between the first diaphragm pump and the air outlet.

7. The hydrogen fuel cell vehicle exhaust detection device of claim 1, wherein: The detection component further includes second diaphragm pump, the input of the second diaphragm pump is communicated with the flow divider, and the output of the second diaphragm pump is communicated with the air outlet.

8. The hydrogen fuel cell vehicle exhaust detection device of claim 7, wherein: Sixth check valve is arranged between the second diaphragm pump and the air outlet.

9. The hydrogen fuel cell vehicle exhaust detection device of claim 1, wherein: It further includes temperature control assembly, the temperature control assembly includes temperature sensor, heater and temperature controller, the temperature sensor and the heater are arranged in the box interior, and the temperature controller is arranged on the surface of the box;The temperature controller is electrically connected with the temperature sensor and heater respectively.

10. The hydrogen fuel cell vehicle exhaust detection device of claim 9, wherein: The end surface of the heater is provided with an axial fan, and the side, away from the heater, of the box is provided with a ventilation opening.

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