Waterproof and explosion-proof fuel cell exhaust hydrogen concentration detection equipment

Abstract

The invention belongs to the field of hydrogen fuel cells, and discloses waterproof and explosion-proof fuel cell tail discharge hydrogen concentration detection equipment. Comprising a shell defined by a bottom plate, a top plate and a peripheral plate, an electrical control part is arranged on the front side in the shell, a hydrogen concentration detection part is arranged on the rear side in the shell, a middle partition plate is arranged between the electrical control part and the hydrogen concentration detection part, an opening is formed in the top plate on the front side, a cover plate is arranged on the opening, the peripheral plate on the front side is provided with a front door, and the peripheral plate on the rear side is provided with a rear door. An electrical backboard is arranged outside the front door. The equipment is additionally provided with three water removal filters, so that the service life of the hydrogen concentration detectors is prolonged, and meanwhile, two hydrogen concentration detectors with different measuring ranges are mounted, so that the measurement precision of the equipment is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen fuel cells, and in particular relates to a waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device. Background Art

[0002] As energy and environmental problems become increasingly severe, hydrogen fuel cell vehicles have become an important development direction for the automotive industry in the future with their advantages of high efficiency and zero emissions. However, in existing fuel cell engine tests, most of the tail exhaust is a mixture of hydrogen and air. With the long-term operation of the fuel cell system, the efficiency of the fuel cell stack decreases, and potential hydrogen leakage, the sealing performance of the tail exhaust valve or plate decreases, and the sealing performance of the hydrogen nozzle decreases, which will lead to an increase in the tail exhaust hydrogen concentration. Once the tail exhaust hydrogen concentration exceeds the threshold, it will cause an explosion when encountering an open flame or electric spark at the moment of discharge, posing a great threat to people's life and property safety. Therefore, for the sake of hydrogen safety, it is necessary to monitor the tail exhaust hydrogen concentration of the fuel cell system in real time, and to always control the hydrogen concentration (tail exhaust hydrogen concentration) of the tail exhaust outlet of the fuel cell system below the explosion concentration, which is very necessary for the safety of the system and personnel. At the same time, the value of the hydrogen concentration is related to the energy efficiency ratio of the fuel cell engine, so the tail exhaust hydrogen concentration monitoring function of the fuel cell engine test bench is particularly important.

[0003] There are currently two methods for extracting tail gas from fuel cells. One method is to add an inclined pipe in the tail pipe to directly introduce hydrogen into the hydrogen concentration sensor; the second method is to use a handheld hydrogen concentration detector at the tail outlet to detect the tail hydrogen concentration.

[0004] If the first solution is adopted, the disadvantages are as follows: 1. Due to technical reasons, the liquid water that may exist in the gas discharged by the fuel cell system (containing a large amount of water vapor) will seriously affect the service life and reliability of the hydrogen concentration sensor. 2. This sensor can only be used for a single fuel cell system, and cannot be applied to other system detection equipment, nor can it be moved. At the same time, since the installation of a hydrogen concentration sensor will increase the complexity of the system, replacement and maintenance are also more difficult.

[0005] The second solution is only suitable for development in a laboratory environment and is greatly affected by environmental factors, so it cannot meet the detection requirements of real-time operation in a vehicle environment. At the same time, this method also has disadvantages such as unstable sampling points, inaccurate concentrations, narrow measurable concentration range, and discontinuous data.

[0006] At this time, it is necessary to develop a simple and convenient multi-range detection equipment that can also be used outdoors. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art, the present invention provides a waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device, which can detect various types of fuel cell systems. When it is detected that the tail exhaust hydrogen concentration exceeds the standard, effective measures can be taken in time to ensure its safety. At the same time, the detection data can also be analyzed and transmitted.

[0008] The above-mentioned object of the present invention is achieved through the following technical scheme: a waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device, the structure of which is: an outer shell surrounded by a bottom plate, a top plate and an outer peripheral plate, an electrical control part is provided on the front side of the outer shell, a hydrogen concentration detection part is provided on the rear side, an intermediate partition is provided between the electrical control part and the hydrogen concentration detection part, an opening is provided on the front top plate, a cover plate is provided on the opening, a front door is provided on the front outer peripheral plate, a rear door is provided on the rear outer peripheral plate, and an electrical back plate is provided on the outside of the front door.

[0009] The electrical control part includes a display provided under the upper cover plate, the display is connected to the motor of the electrical control part, the display is provided with a power button and a stop / start control button, and a groove is provided on the peripheral plate belonging to the electrical control part on the side of the fuel cell tail exhaust hydrogen concentration detection device, and a LAN interface, a CAN interface and a POWER interface are installed in the groove, and the motor of the electrical control part is a PLC controller.

[0010] The hydrogen concentration detection part is composed of a primary automatic drainage filter, a secondary water removal filter, a tertiary water removal filter, a stop valve, a flow meter, a pump-suction hydrogen concentration detector, and a hydrogen concentration analyzer. A tail exhaust inlet is provided above the peripheral plate belonging to the hydrogen concentration detection part on the side of the fuel cell tail exhaust hydrogen concentration detection equipment, and a tail exhaust outlet is provided below. The primary automatic drainage filter, the secondary water removal filter, the tertiary water removal filter, the stop valve, the flow meter, the pump-suction hydrogen concentration detector, and the hydrogen concentration analyzer are sequentially connected from the tail exhaust inlet to the tail exhaust outlet.

[0011] Furthermore, the motor model is GCAN-PLC-400 display touch screen TCP7032Ki.

[0012] Furthermore, a scriber is provided between the cover plate and the top plate, and the scriber is used for opening and fixing the cover plate.

[0013] Furthermore, a push-pull handle is provided on the rear door side top plate.

[0014] Furthermore, casters are provided at the bottom of the base plate.

[0015] Furthermore, a caster pad is provided between the base plate and the casters.

[0016] Furthermore, the measuring range of the pump-suction hydrogen concentration detector is 10 vol%.

[0017] Furthermore, the range of the hydrogen concentration analyzer is 2000ppm.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] 1. The protection level of the equipment is IP55, the explosion-proof level of all components is IIC level, and the hydrogen concentration test part and the electrical control part are integrated to make the equipment more compact and convenient;

[0020] 2. The device is equipped with four 2.5-inch wheels, which makes it easy to move. The tilted display makes it easier to observe the test data and has good operability;

[0021] 3. The device is designed to be waterproof and moisture-proof, reducing the impact of bad weather on the device;

[0022] 4. The device has three water removal filters, which increases the life of the hydrogen concentration detector. At the same time, two hydrogen concentration detectors with different ranges are installed, which greatly improves the measurement accuracy of the device. When the hydrogen concentration exceeds the standard or the hydrogen concentration detection device fails, the device will issue an audible and visual alarm, which is safer;

[0023] 5. The equipment can be applied to different types of fuel cell systems, with good versatility and aesthetics; BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 This is the main view of the hydrogen concentration detection equipment (inside the electrical side);

[0026] Figure 2 This is a right view of the hydrogen concentration detection device;

[0027] Figure 3 It is the left view of the hydrogen concentration detection equipment;

[0028] Figure 4 It is the back view of the hydrogen concentration detection device (inside the detection side);

[0029] Figure 5 This is the main view (external) of the hydrogen concentration detection equipment;

[0030] Figure 6 It is the back view (external) of the hydrogen concentration detection device;

[0031] Figure 7 This is a front view of the display panel of the hydrogen concentration detection equipment.

[0032] In the figure, 1. bottom plate; 2. outer plate; 3. top plate; 4. cover plate; 5. middle partition; 6. electrical back plate; 7. display; 8. hydrogen concentration detection part; 9. front door; 10. rear door; 11. push-pull handle; 12. scriber; 13. caster pad; 14. caster; A. tail exhaust inlet; B. tail exhaust outlet; C. LAN interface; D. CAN interface; E. POWER interface; F. power button; G. stop / start button; H. first-stage automatic drainage filter; J. second-stage water removal filter; K. third-stage water removal filter; L. stop valve; M. flow meter; N. pump-suction hydrogen concentration detector; P. hydrogen concentration analyzer. DETAILED DESCRIPTION

[0033] The present invention is described in detail below by specific examples, but the protection scope of the present invention is not limited. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can be obtained from commercial channels.

[0034] Example 1

[0035] The present invention provides a portable waterproof and explosion-proof device for detecting tail exhaust hydrogen concentration of a fuel cell system, which is mainly composed of a bottom plate 1, an outer plate 2, a top plate 3, a cover plate 4, a middle partition plate 5, an electrical back plate 6, a display 7, a hydrogen concentration detection part 8, a front door 9, a rear door 10, a push-pull handle 11, a scriber 12, a caster pad 13, a 2.5-inch caster 14, etc.

[0036] Furthermore, the hydrogen concentration detection part 8 is fixed on the middle partition 5, and the exhaust gas of the fuel cell system enters the hydrogen concentration detection part through the exhaust inlet A, and passes through the first-level automatic drainage filter H, the second-level water removal filter (J), the third-level water removal filter (K), the stop valve L, the flow meter (M), the pump suction hydrogen concentration detector with a range of 0-10vol% (N), and the hydrogen concentration analyzer with a range of 0-2000ppm (P), and finally the exhaust gas is discharged through the exhaust outlet B. Among them, the first-level automatic drainage filter H, the second-level water removal filter (J), and the third-level water removal filter (K) are mainly used to remove moisture in the exhaust system and extend the service life of the hydrogen concentration sensor, and then the filtered water is discharged through the floor 1 with a hose; the stop valve L can control the opening and closing of the exhaust gas according to actual needs, and the flow meter (M) can detect the flow of the exhaust system; the two hydrogen concentration sensors (N and P) are equipped, and customers can switch according to actual conditions, which improves the detection range of the equipment.

[0037] Furthermore, in the electrical control part, the electrical control accessories are fixed to the middle partition 5 through the electrical backplane 6, the power line is connected to the electrical control part through the POWER interface E, and the LAN interface (C) and the CAN interface (D) can exchange, transmit and download data; the display 7 is installed on the top plate 3, at an angle of 35 degrees to the horizontal plane, so as to facilitate the operator to observe. There are two control buttons on the right side of the display 7, namely the power button F and the stop / start button (G), which are convenient for the operator to control the equipment.

[0038] Furthermore, there is a watertight cover plate 4 above the display 7, which can be closed when it rains. The cover plate is a transparent acrylic plate, so even if the cover plate 4 is closed, the value on the display 7 can be clearly seen. When it is sunny, the cover plate 4 can be opened. The cover plate can be locked by a scratching piece 12 to prevent accidental closing.

[0039] Furthermore, the protection level of the equipment is IP55, and the explosion-proof level of all components is IIC level, which greatly improves the safety. There is a push-pull handle 11 on the top, and 4 2.5-inch casters 14 on the bottom. The casters are bolted on the caster pads 13, and the caster pads are welded on the bottom plate 1, so that the equipment can be easily dragged. The electrical part and the hydrogen concentration detection part are closed with the front door 9 and the rear door 10 respectively, which is convenient for installation and maintenance. At the same time, the equipment is equipped with an audible and visual alarm, which can be used for early warning if hydrogen exceeds the standard or fails.

[0040] The above-described embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made thereto without departing from the principles and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device, characterized in that: The structure comprises: a shell surrounded by a bottom plate (1), a top plate (3) and an outer plate (2); an electrical control part is arranged on the front side of the shell, a hydrogen concentration detection part (8) is arranged on the rear side, a middle partition (5) is arranged between the electrical control part and the hydrogen concentration detection part (8); an opening is arranged on the front top plate (3), a cover plate (4) is arranged on the opening, a front door (9) is arranged on the front outer plate (2), a rear door (10) is arranged on the rear outer plate (2), and an electrical back plate (6) is arranged on the outside of the front door (9); The electrical control part comprises a display (7) provided under the upper cover plate (4), the display (7) being connected to the motor of the electrical control part, the display (7) being provided with a power button (F) and a stop / start control button (G), a groove being provided on the peripheral plate (2) belonging to the electrical control part on the side of the fuel cell tail exhaust hydrogen concentration detection device, the groove being provided with a LAN interface (C), a CAN interface (D) and a POWER interface (E), and the motor of the electrical control part being a PLC controller; The hydrogen concentration detection part (8) is composed of a primary automatic drainage filter (H), a secondary water removal filter (J), a tertiary water removal filter (K), a stop valve (L), a flow meter (M), a pump-suction type hydrogen concentration detector (N), and a hydrogen concentration analyzer (P). A tail exhaust inlet (A) is provided above the peripheral plate (2) belonging to the hydrogen concentration detection part (8) on the side of the fuel cell tail exhaust hydrogen concentration detection device, and a tail exhaust outlet (B) is provided below. The primary automatic drainage filter (H), the secondary water removal filter (J), the tertiary water removal filter (K), the stop valve (L), the flow meter (M), the pump-suction type hydrogen concentration detector (N), and the hydrogen concentration analyzer (P) are sequentially connected between the tail exhaust inlet (A) and the tail exhaust outlet (B).

2. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: The motor model is GCAN-PLC-400 display touch screen TCP7032Ki.

3. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: A scribing piece (12) is provided between the cover plate (4) and the top plate (3).

4. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: A push-pull handle (11) is provided on the side top plate (3) of the rear door (10).

5. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: Casters (14) are provided at the bottom of the base plate (1).

6. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: A caster pad (13) is provided between the base plate (1) and the caster (14).

7. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: The measuring range of the pumping hydrogen concentration detector (N) is 10 vol%.

8. The waterproof and explosion-proof fuel cell tail exhaust hydrogen concentration detection device according to claim 1 is characterized in that: The range of the hydrogen concentration analyzer (P) is 2000ppm.

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