A calibration method for a hydrogen fuel engine

Abstract

The present invention relates to the field of calibration technology, and discloses a calibration method for a hydrogen fuel engine. The equipment used includes a heat preservation box body, on the side wall of which a connection calibrator is embedded. On the front and rear side walls of the heat preservation box body, a hot gas dispenser and a cold gas dispenser are sequentially embedded. A waste liquid and waste gas recovery device is fixed outside the heat preservation box body. The waste liquid and waste gas recovery device includes: a sealed box body, and a middle plate is fixed inside the sealed box body. The present invention recovers the waste gas and waste liquid generated by the hydrogen fuel engine during operation by setting up a waste liquid and waste gas recovery device, and respectively transmits the waste gas and waste liquid into the sealed box body and the waste gas recovery bin through connecting pipes to realize classified recovery and collection operations. The ammonia gas is recovered through the waste gas recovery bin to prevent environmental pollution caused by direct emission of ammonia gas.

Description

Technical Field

[0001] The present invention relates to the technical field of calibration equipment, and particularly to a calibration equipment and a calibration method for a hydrogen fuel engine. Background Art

[0002] As the name implies, a hydrogen fuel engine is an engine that uses hydrogen fuel as a power source. The characteristics of hydrogen fuel are pollution-free and high efficiency. The emissions generated after its operation are generally water and ammonia, which have less environmental pollution.

[0003] When the calibration equipment of a hydrogen fuel engine conducts test calibration operations on the hydrogen fuel engine, due to the working characteristics of the hydrogen fuel engine, a large amount of liquid water and ammonia will be discharged. The existing calibration equipment only collects the liquid water, while the ammonia will be directly discharged. Ammonia is easily soluble in water, and once discharged randomly, it will have a certain impact on the environment. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a calibration equipment and a calibration method for a hydrogen fuel engine, which solve the problems raised in the above background art. To achieve the above objectives, the present invention is realized through the following technical solutions: A calibration equipment and a calibration method for a hydrogen fuel engine, including a heat preservation box body, a connection calibrator is embedded on the side wall of the heat preservation box body, a hot gas injector and a cold gas injector are sequentially embedded on the front and rear side walls of the heat preservation box body, and a waste liquid and waste gas recovery device is fixed outside the heat preservation box body. The waste liquid and waste gas recovery device includes:

[0005] A sealed box body, a middle plate is fixed inside the sealed box body, a connected plug-in base is fixed at the top of the middle plate, and a connection pipe is embedded on the side wall of the sealed box body;

[0006] An exhaust gas recovery bin, an exhaust valve is arranged at the top of the exhaust gas recovery bin, a sealing plate penetrates and is slidably connected to the right side wall of the exhaust gas recovery bin, two elastic pieces one are fixed between the two sides of the sealing plate and the exhaust gas recovery bin, an elastic linkage plate is fixed on the right side of the connected plug-in base, and the connection pipe is L-shaped;

[0007] An ice slag treatment device is fixed inside the heat preservation box body. The ice slag treatment device includes:

[0008] A recovery bin, a push-button switch type air pump is fixed on both sides of the recovery bin, and a pneumatic telescopic rod is fixed on each air pump;

[0009] A circulating moving motor, a double-sided scraping rod is rotatably connected to the back of the circulating moving motor, and an elastic piece two is arranged between the double-sided scraping rod and the circulating moving motor.

[0010] Preferably, arc-shaped baffles are fixed on both sides of the bilateral scraping rod, and an ice-removing acceleration component is arranged between the bilateral scraping rod and the circulating motor.

[0011] Preferably, the ice-removing acceleration component includes a fixed block and an arc-shaped rod. A vibrating rod is rotatably connected inside the fixed block, and a contact plate is fixed on the right side of the vibrating rod.

[0012] Preferably, there are two arc-shaped rods, and both arc-shaped rods are fixed on the top of the circulating motor. A plurality of impact balls are fixed on the opposite sides of the two arc-shaped rods.

[0013] Preferably, a hydrogen fuel leakage detection device is fixed outside the heat preservation box body. The hydrogen fuel leakage detection device includes:

[0014] A storage bin, a small-diameter air valve is embedded on the side wall of the storage bin, a wind pressure pipeline is fixed on the top of the storage bin, and a cross-shaped metal wind plate is rotatably connected inside the wind pressure pipeline;

[0015] An induction movable rod is rotatably connected inside the storage bin. A cavity is formed inside the induction movable rod. A metal conduction block is embedded on the right side of the induction movable rod, and an elastic metal bell is fixed on the left side of the metal conduction block.

[0016] Preferably, a third elastic sheet is arranged between the lower left side of the induction movable rod and the storage bin, and the top of the induction movable rod is communicated with the wind pressure pipeline through an elastic hose.

[0017] A calibration method for a hydrogen fuel engine calibration device is as follows:

[0018] Step 1: First, place the hydrogen fuel engine on the engine support frame inside the heat preservation box body, and then connect the hydrogen fuel engine to the connection calibrator;

[0019] Step 2: Adjust the environment inside the heat preservation box body by starting the cold air dispenser or the hot air dispenser to release the environmental gas, so as to calibrate the state of the hydrogen fuel engine when it works in different environments;

[0020] Step 3: A waste liquid and waste gas recovery device is fixed on the right side of the heat preservation box body, and the waste liquid and waste gas recovery device is used to recover the liquid water and ammonia gas generated by the hydrogen fuel engine during operation;

[0021] Step 4: Detect whether the hydrogen fuel engine leaks hydrogen fuel during operation through the hydrogen concentration sensor, and at the same time, an alarm connected electrically performs an alarm operation, so as to stop the test in time and repair it.

[0022] The present invention provides a calibration device and a calibration method for a hydrogen fuel engine. It has the following beneficial effects:

[0023] (1) The present invention sets up a waste liquid and waste gas recovery device to recover the waste gas and waste liquid generated by the hydrogen fuel engine during operation. The waste gas and waste liquid are respectively transmitted into the sealed box body and the waste gas recovery bin through connecting pipes to achieve classified recovery and collection operations. The ammonia gas is recovered through the waste gas recovery bin to prevent environmental pollution caused by direct ammonia gas emissions.

[0024] (2) The present invention sets up an ice slag treatment device to treat the ice slag attached to the air outlet of the cold air dispenser. The double-sided scraping rod is controlled by a circulating moving motor to move left and right to separate the ice slag. At the same time, when the double-sided scraping rod moves to the end of the air outlet of the cold air dispenser, it will first squeeze the push-button switch air pump, causing it to inflate the pneumatic telescopic rod, making the pneumatic telescopic rod extend and lifting the double-sided scraping rod, so as to treat the ice slag attached to the side walls on both sides of the air outlet of the cold air dispenser.

[0025] (3) The present invention sets up an accelerating ice removal component to treat the residual ice slag attached to the double-sided scraping rod. During the process of the double-sided scraping rod lifting and scraping, the impact ball on the arc-shaped rod continuously impacts the contact plate. With the cooperation of the torsion spring rotating shaft, the vibrating rod continuously impacts the double-sided scraping rod, shaking off the residual ice slag attached to the double-sided scraping rod.

[0026] (4) The present invention sets up a hydrogen fuel leakage detection device to detect whether hydrogen leakage occurs during the operation of the hydrogen fuel engine. Once hydrogen leaks, the air pressure in the insulation box will increase. At this time, the excess gas will be ejected through the small-diameter valve, and different alarm sounds will be generated according to different ambient gases, so as to prompt the problem of hydrogen leakage in the hydrogen fuel engine. Description of the Drawings

[0027] Figure 1 It is a three-dimensional structure diagram of the overall left view perspective of the present invention;

[0028] Figure 2 It is a three-dimensional structure diagram of the overall right view perspective of the present invention;

[0029] Figure 3 It is a three-dimensional structure diagram of the double-view perspective of the waste liquid and waste gas recovery device of the present invention;

[0030] Figure 4 It is a three-dimensional sectional view structure diagram of the waste gas recovery bin of the present invention;

[0031] Figure 5 It is a three-dimensional structure diagram of the ice slag treatment device of the present invention;

[0032] Figure 6 For the present invention Figure 5Schematic diagram of the enlarged structure of part A inside

[0033] Figure 7 3D structure diagram of the ice-removing acceleration component of the present invention

[0034] Figure 8 Dual-view 3D structure diagram of the hydrogen fuel leakage detection device of the present invention

[0035] Figure 9 3D structure diagram of the induction movable rod and its internal structure of the present invention

[0036] In the figure: 1. Heat preservation box body; 2. Connection calibrator; 3. Cold air dispenser; 4. Hot air dispenser; 5. Waste liquid and waste gas recovery device; 51. Sealed box body; 52. Waste gas recovery bin; 53. Connection pipeline; 54. Connecting and plugging base; 55. Elastic linkage plate; 56. Sealing plate; 6. Ice slag treatment device; 61. Recovery bin; 62. Press-switch type air pump; 63. Pneumatic telescopic rod; 64. Circular moving motor; 65. Double-sided scraping rod; 66. Ice-removing acceleration component; 661. Fixed block; 662. Arc-shaped rod; 663. Vibration rod; 664. Contact plate; 7. Hydrogen fuel leakage detection device; 71. Storage bin; 72. Small-diameter valve; 73. Wind pressure pipeline; 74. Cross-shaped metal wind plate; 75. Induction movable rod; 76. Elastic metal bell; 77. Metal conduction block. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0038] Please refer to Figures 1-9 , the present invention provides a technical solution: a calibration device for a hydrogen fuel engine, mainly including a heat preservation box body 1. A closed top cover is rotatably connected to the top end of the heat preservation box body 1. The bottom of the inner wall of the heat preservation box body 1 is fixed with an engine support frame. At the same time, a connection calibrator 2 is embedded on the right side wall of the heat preservation box body 1, and a cold air dispenser 3 is embedded on the back side wall of the heat preservation box body 1, and a hot air dispenser 4 is embedded on the front side wall of the heat preservation box body 1. By setting the cold air dispenser 3 and the hot air dispenser 4 to adjust the environment inside the heat preservation box body 1, the calibration operation of the hydrogen fuel engine can be better carried out. A waste liquid and waste gas recovery device 5 is fixed on the right side of the heat preservation box body 1. The waste liquid and waste gas recovery device 5 mainly includes:

[0039] Sealed box body 51, in the middle of the sealed box body 51, a middle plate is fixed. The design of the middle plate is to divide the interior of the sealed box body 51 into two parts. On the back side plate of the sealed box body 51, a connecting pipe 53 is embedded. One end of the connecting pipe 53 is connected with a plug through a soft rubber tube. The function of the plug is to connect the drain port of the hydrogen fuel engine. At the same time, the other end of the connecting pipe 53 penetrates and is fixed on the middle plate. The connecting pipe 53 is L-shaped, and its turning point is in an open state, and a one-way movable plate is arranged in the opening. By arranging the one-way movable plate in the turning opening of the connecting pipe 53, the water and ammonia gas generated during the operation of the hydrogen fuel engine are separated, and collected and processed respectively. At the top of the middle plate, a connected plug-in base 54 is fixed. On the right side of the connected plug-in base 54, an elastic linkage plate 55 is fixed. In the space above the middle plate of the sealed box body 51, half of the saturated ammonium salt solution is filled;

[0040] Exhaust gas recovery bin 52. An exhaust valve is arranged at the top of the exhaust gas recovery bin 52. At the same time, a sealing plate 56 is connected to the side wall of the exhaust gas recovery bin 52 in a piston-sliding manner. When the exhaust gas recovery bin 52 is in the initial state, a sufficient amount of saturated ammonium salt solution is filled in it. Subsequently, the exhaust gas recovery bin 52 is closed through the sealing plate 56 to prevent the saturated ammonium salt solution inside from leaking. Elastic pieces one are fixed on both side walls of the sealing plate 56, and the ends of the two elastic pieces one far away from the sealing plate 56 are fixed on the outer wall of the exhaust gas recovery bin 52.

[0041] Furthermore, inside the heat preservation box body 1, below the air outlet of the cold air dispenser 3, an ice slag treatment device 6 is movably connected. The ice slag treatment device 6 mainly includes:

[0042] Recovery bin 61. The recovery bin 61 is slidably connected in a support frame fixed on the inner wall of the heat preservation box body 1. Press switch type air pumps 62 are fixed on both the left side and the right side of the recovery bin 61, and a pneumatic telescopic rod 63 is fixed at the air outlet of the press switch type air pump 62. When the press switch type air pump 62 is started, air is filled into the pneumatic telescopic rod 63 to make the pneumatic telescopic rod 63 extend;

[0043] The circulating motor 64 is slidably connected to the front end of the recycling bin 61. A double-sided scraping rod 65 is rotatably connected to the back surface of the circulating motor 64. By the circular movement of the circulating motor 64, the left and right movement of the double-sided scraping rod 65 is controlled to remove the ice slag attached to the air outlet of the cold air dispenser 3. The scraped ice slag will fall into the recycling bin 61 for recycling, preventing the air outlet of the cold air dispenser 3 from being blocked. Arc-shaped baffles are fixed on both sides of the double-sided scraping rod 65. The arc-shaped baffles are provided to prevent the ice slag scraped by the double-sided scraping rod 65 from splashing everywhere. Among them, a second elastic sheet is fixed between the top end of the double-sided scraping rod 65 and the circulating motor 64. When the double-sided scraping rod 65 moves to the end of the air outlet of the cold air dispenser 3, it will first squeeze the push-button switch air pump 62, causing it to inflate the pneumatic telescopic rod 63, so that the pneumatic telescopic rod 63 extends and lifts the double-sided scraping rod 65, which can process the ice slag attached to the side walls on both sides of the air outlet of the cold air dispenser 3. At the same time, an ice-removing acceleration component 66 is provided between the double-sided scraping rod 65 and the circulating motor 64;

[0044] The ice-removing acceleration component 66 includes a fixed block 661 and an arc-shaped rod 662. The fixed block 661 is fixed to the top end of the double-sided scraping rod 65. A vibrating rod 663 is rotatably connected to the inside of the fixed block 661 through a torsion spring rotating shaft. A contact plate 664 is fixed to the right side of the vibrating rod 663. At the same time, there are two arc-shaped rods 662 in total, and both are fixed to the top end of the circulating motor 64. A plurality of impact balls are fixed on the side of the two arc-shaped rods 662 facing each other. When the double-sided scraping rod 65 is lifted and moved by the pneumatic telescopic rod 63, the double-sided scraping rod 65 drives the vibrating rod 663 to rotate. At this time, the contact plate 664 will be continuously impacted by the impact balls on the arc-shaped rod 662, causing the vibrating rod 663 to lift. Subsequently, under the restoring force of the torsion spring rotating shaft, the vibrating rod 663 returns to its original position and impacts the double-sided scraping rod 65, shaking off the ice slag attached to the double-sided scraping rod 65.

[0045] Furthermore, a hydrogen fuel leakage detection device 7 is fixed to the left side of the heat preservation box body 1. The hydrogen fuel leakage detection device 7 mainly includes:

[0046] A storage bin 71. A small-diameter air valve 72 is embedded in the side wall of the storage bin 71. Once the hydrogen fuel engine leaks hydrogen fuel after the heat preservation box body 1 is filled with ambient gas, the air pressure in the heat preservation box body 1 will increase. At this time, the excess gas will be ejected through the small-diameter air valve 72. At the same time, a wind pressure pipeline 73 is connected and fixed to the top end of the storage bin 71. A cross-shaped metal wind plate 74 is rotatably connected in the wind pressure pipeline 73;

[0047] The induction movable rod 75 is rotatably connected inside the storage bin 71, and a third elastic sheet is provided between the bottom of the induction movable rod 75 and the storage bin 71. A cavity is formed inside the induction movable rod 75, and the cavity is filled with sufficient liquid water. A water injection pipe with a one-way valve is fixed to the back of the induction movable rod 75. A metal conduction block 77 is fixed to the right side of the induction movable rod 75. When the environmental gas in the heat preservation box body 1 is ejected through the small-diameter air valve 72, it will act on the metal conduction block 77, and the physical state generated by the hot environmental gas or the cold environmental gas is conducted into the induction movable rod 75 through the metal conduction block 77. An elastic metal bell 76 is fixed to the left side of the induction movable rod 75. When the cold environmental gas acts on the metal conduction block 77, the end of the metal conduction block 77 close to the small-diameter air valve 72 will adsorb and condense the contacted gas, resulting in an icing phenomenon, thereby increasing the weight of the induction movable rod 75, causing the induction movable rod 75 to rotate, prompting the elastic metal bell 76 to strike the storage bin 71, generating a sound alarm. At the same time, an elastic hose is fixed to the top of the induction movable rod 75. One end of the elastic hose is communicated with the cavity of the induction movable rod 75, and the other end of the elastic hose is fixed and communicated with the wind pressure pipe 73. When the hot environmental gas is ejected through the small-diameter air valve 72, it is conducted into the liquid water in the induction movable rod 75 through the metal conduction block 77, so that the liquid water vaporizes and then enters the wind pressure pipe 73, causing the cross-shaped metal wind plate 74 to rotate and generating a sound alarm.

[0048] A calibration method for a hydrogen fuel engine mainly includes the following steps:

[0049] Step 1: First, place the hydrogen fuel engine on the engine support frame inside the heat preservation box body 1, and then connect the hydrogen fuel engine to the connection calibrator 2;

[0050] Step 2: Adjust the environment inside the heat preservation box body 1 by starting the cold air dispenser 3 or the hot air dispenser 4 to release the environmental gas, so as to calibrate the state of the hydrogen fuel engine when it works in different environments;

[0051] Step 3: A waste liquid and waste gas recovery device 5 is fixed on the right side of the heat preservation box body 1, and the waste liquid and waste gas recovery device 5 is used to recover the liquid water and ammonia gas when the hydrogen fuel engine is working;

[0052] Step 4: Use the hydrogen fuel leakage detection device 7 to detect whether there is a problem of hydrogen fuel leakage when the hydrogen fuel engine is working, so as to stop the test in time and repair it.

[0053] When in use:

[0054] First, place the hydrogen fuel engine on the engine support frame and then connect it to the connection calibrator 2;

[0055] 1. First, start the cold air dispenser 3 to release cold air into the heat preservation box body 1 to simulate the working state of the hydrogen fuel engine in a cold environment. After the cold environment gas filling is completed, start the hydrogen fuel engine, and detect and calibrate the working condition of the hydrogen fuel engine in the cold situation through the connection calibrator 2. After the detection is completed, icing is likely to occur at the air outlet of the cold air dispenser 3. At this time, start the circulating moving motor 64 to make the circulating moving motor 64 move left and right in a cycle. During the left and right movement of the circulating moving motor 64, it will drive the bilateral scraping rod 65 to move left and right, scraping off the ice slag attached to the bottom wall of the air outlet of the cold air dispenser 3. The scraped ice slag falls into the recycling bin 61 for collection. At the same time, arc-shaped baffles are fixed on both sides of the bilateral scraping rod 65 to prevent the ice slag scraped by the bilateral scraping rod 65 from splashing everywhere. When the circulating moving motor 64 drives the bilateral scraping rod 65 to move to the end of the air outlet of the cold air dispenser 3, it will first squeeze the push-switch air pump 62 to inflate the pneumatic telescopic rod 63, making the pneumatic telescopic rod 63 extend and lift the bilateral scraping rod 65, so as to handle the ice slag attached to the side walls on both sides of the air outlet of the cold air dispenser 3. During the process of the bilateral scraping rod 65 lifting and scraping, the bilateral scraping rod 65 drives the vibrating rod 663 to rotate synchronously. At this time, the contact plate 664 will be continuously hit by the impact ball on the arc-shaped rod 662, causing the vibrating rod 663 to lift. Then, under the resilience of the torsion spring rotating shaft, the vibrating rod 663 returns to its original position and hits the bilateral scraping rod 65, shaking off the ice slag attached to the bilateral scraping rod 65;

[0056] 2. Start the hot air dispenser 4 to fill the heat preservation box body 1 with hot annular gas to simulate the working state of the hydrogen fuel engine in a high-temperature environment, and then detect and calibrate through the connection calibrator 2;

[0057] 3. When the hydrogen fuel engine is working, liquid water and ammonia gas will be generated. At this time, these products are discharged through the connecting pipe 53. When the liquid water contacts the one-way movable plate, it will push the one-way movable plate to rotate. At this time, the liquid water enters the lower cavity of the sealed box body 51. Then, the ammonia gas will enter the waste gas recycling bin 52 along the vertical rod of the connecting pipe 53. By discharging the saturated ammonium salt solution filled in the waste gas recycling bin 52, ammonia gas is collected. Then, when the waste gas recycling bin 52 is taken out, the elastic linkage plate 55 is separated from the sealing plate 56. Under the resilience of the first elastic piece, the sealing plate 56 returns to its original position to seal the bottom of the waste gas recycling bin 52 to prevent ammonia gas leakage.

[0058] After the cold air dispenser 3 or the hot air dispenser 4 releases the environmental gas, the air pressure in the heat preservation box body 1 is relatively stable and will not change. At this time, once hydrogen leaks during the operation of the hydrogen fuel engine, the hydrogen and environmental gas mixture will be sent into the storage bin 71 through the small-diameter valve 72. At this time;

[0059] When the cold ambient gas acts on the metal conduction block 77, the end of the metal conduction block 77 close to the small-diameter valve 72 will adsorb and condense the contacted gas, resulting in icing, thereby increasing the weight of the induction lever 75, causing the induction lever 75 to rotate, and prompting the elastic metal bell 76 to strike the storage bin 71 to generate an audible alarm;

[0060] When the hot ambient gas is ejected through the small-diameter valve 72, it is conducted through the metal conduction block 77 to the liquid water in the induction lever 75, thereby vaporizing the liquid water. Subsequently, it enters the wind pressure pipe 73, causing the cross-shaped metal wind plate 74 to rotate and generating an audible alarm.

[0061] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes should be covered within the protection scope of the present invention.

Claims

1. A calibration device used in a calibration method for a hydrogen fuel engine, including a heat preservation box body, characterized in that: A connection calibrator is embedded on the side wall of the heat preservation box body, a hot gas dispenser and a cold gas dispenser are sequentially embedded on the front and rear side walls of the heat preservation box body, and a waste liquid and waste gas recovery device is fixed outside the heat preservation box body. The waste liquid and waste gas recovery device includes: A sealed box body, with a middle plate fixed inside the sealed box body, a connected plug-in base fixed at the top of the middle plate, and a connection pipe embedded on the side wall of the sealed box body; A waste gas recovery bin, with an exhaust valve arranged at the top of the waste gas recovery bin, a sealing plate penetrating and slidingly connected on the right side wall of the waste gas recovery bin, two first elastic pieces fixed between both sides of the sealing plate and the waste gas recovery bin, an elastic linkage plate fixed on the right side of the connected plug-in base, and the connection pipe is L-shaped; An ice slag treatment device is fixed inside the heat preservation box body. The ice slag treatment device includes: A recovery bin, with a push-button switch type air pump fixed on both sides of the recovery bin, and a pneumatic telescopic rod fixed on each air pump; A circulating moving motor, with a double-sided scraping rod rotatably connected to the back of the circulating moving motor, and a second elastic piece arranged between the double-sided scraping rod and the circulating moving motor; Arc-shaped baffles are fixed on both sides of the double-sided scraping rod, and an accelerating de-icing component is arranged between the double-sided scraping rod and the circulating moving motor; The accelerating de-icing component includes a fixed block and an arc-shaped rod. A vibrating rod is rotatably connected inside the fixed block, and a contact plate is fixed on the right side of the vibrating rod.

2. The calibration device used in a calibration method for a hydrogen fuel engine according to claim 1, characterized in that: There are two arc-shaped rods, and both of the two arc-shaped rods are fixed on the top of the circulating moving motor. A plurality of impact balls are fixed on the opposite sides of the two arc-shaped rods.

3. The calibration device used in a calibration method for a hydrogen fuel engine according to claim 2, characterized in that: A hydrogen fuel leakage detection device for detecting hydrogen fuel leakage is fixed outside the heat preservation box body.

4. A calibration method for a hydrogen fuel engine, using the calibration device used in a calibration method for a hydrogen fuel engine according to any one of claims 1-3, characterized in that: The specific steps are as follows: Step 1: First, place the hydrogen fuel engine on the engine support frame inside the heat preservation box body, and then connect the hydrogen fuel engine to the connection calibrator; Step 2: Adjust the environment inside the heat preservation box body by starting the cold gas dispenser or the hot gas dispenser to release environmental gas, so as to calibrate the state of the hydrogen fuel engine when it works in different environments; Step 3: A waste liquid and waste gas recovery device is fixed on the right side of the heat preservation box body, and the waste liquid and waste gas recovery device is used to recover the liquid water and ammonia gas when the hydrogen fuel engine is working; Step 4: Detect whether there is a problem of hydrogen fuel leakage when the hydrogen fuel engine is working through a hydrogen concentration sensor, and at the same time, perform an alarm operation through an electrically connected alarm, so as to stop the test in time and repair it.

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