Ammonia gas rail for ammonia engine

Abstract

The utility model relates to the technical field of engines, and discloses an ammonia gas rail for an ammonia engine, which comprises a spraying rail main body, the high-pressure cavity and the low-pressure cavity are formed in the injection rail main body; the injection rail upper cover is arranged on the injection rail main body and is communicated with the high-pressure cavity; the ammonia injector is connected between the injection rail upper cover and the injection rail main body, and the ammonia injector is communicated with the low-pressure cavity; the ammonia gas rail is specially designed for an ammonia gas engine, and has the characteristics that the ammonia resistance is high, the ammonia gas conveying efficiency is high, the gas rail upper cover can be mounted on the injection rail main body through the hollow bolt, the gaseous ammonia gas is guided and conveyed, and the ammonia gas rail is easy to expand, compact in structure, simple and convenient to mount and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an ammonia gas rail for an ammonia engine. Background Art

[0002] Internal combustion engines are the main power source for road traffic, non-road mobile machinery and defense equipment in the world today. In the context of carbon neutrality and electrification, internal combustion engines are facing tremendous pressure. Finding a sustainable development path for internal combustion engines has important practical and economic significance. Ammonia, as a zero-carbon fuel and hydrogen-rich carrier, has received increasing attention in the era of carbon neutrality and has become a research hotspot.

[0003] The ammonia gas rail is one of the core components of the ammonia engine. It has the functions of transporting ammonia fuel and installing ammonia nozzles and high and low pressure ammonia chamber temperature and pressure sensors. The ammonia gas rail in the existing technology has defects such as being difficult to expand and inconvenient to install. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an ammonia gas rail for an ammonia engine, aiming to alleviate the above problems at least to a certain extent.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] An ammonia gas rail for an ammonia engine, comprising:

[0007] Injection rail body;

[0008] A high-pressure chamber and a low-pressure chamber are provided on the injection rail body;

[0009] A spray rail upper cover, disposed on the spray rail body and connected to the high-pressure chamber;

[0010] an ammonia injector, connected between the injection rail upper cover and the injection rail body, the ammonia injector being in communication with the low-pressure chamber;

[0011] Wherein, the gaseous ammonia in the high-pressure chamber can be transported to the low-pressure chamber through an ammonia injector;

[0012] Wherein, the spray rail upper cover is detachably connected to the spray rail main body.

[0013] Preferably, an air inlet channel and an air outlet channel are respectively provided at both ends of the injection rail body, the air inlet channel is communicated with the high-pressure chamber, and the air outlet channel is communicated with the low-pressure chamber.

[0014] Preferably, it also includes:

[0015] A first connection port is provided at the bottom of the injection rail upper cover, and a second connection port is provided on the injection rail body and communicates with the low-pressure chamber, and the ammonia injector is connected between the first connection port and the second connection port;

[0016] A positioning port is provided at the bottom of the injection rail body, and the positioning port is communicated with the high-pressure chamber;

[0017] A delivery channel is provided on the side wall of the positioning port, the delivery channel passes through the spray rail upper cover, the delivery channel is communicated with the first connecting port, and a one-eighth plug is inserted in one end of the delivery channel away from the positioning port.

[0018] Preferably, the positioning port passes through the injection rail upper cover, a hollow bolt is provided in the positioning port, the hollow bolt is inserted into the high-pressure chamber, and a delivery port is opened on the hollow bolt.

[0019] Preferably, a side wall of the positioning port is provided with a transfer port connected to the delivery port, and a diameter of the transfer port is larger than that of the positioning port.

[0020] Preferably, an O-ring is connected between the spray rail upper cover and the spray rail body.

[0021] Preferably, a sealing gasket is connected between the hollow bolt and the injection rail upper cover.

[0022] Preferably, it further comprises two temperature and pressure sensors plugged into the injection rail body, wherein one of the temperature and pressure sensors is plugged into the high-pressure chamber, and the other temperature and pressure sensor is plugged into the low-pressure chamber.

[0023] In summary, the utility model mainly has the following beneficial effects:

[0024] By setting the injection rail body, the liquid ammonia in the ammonia fuel tank enters the vaporizer through the outlet stop valve, the outlet solenoid valve, and the outlet flow limiting valve. The liquid ammonia enters the vaporizer after passing through various valves and becomes gaseous ammonia, enters the pressure-stabilizing tank after passing through the pressure reducing valve, and enters the high-pressure chamber of the ammonia rail after passing through the fine filter. The high-pressure chamber and the low-pressure chamber are connected by multiple ammonia injectors. When the ammonia injector is closed, the high and low pressure chambers are not connected. When the ammonia injector is opened, the ammonia in the high-pressure chamber of the ammonia rail will be sprayed into the low-pressure chamber through the injector, enter the engine intake duct after flowing through the ammonia-air mixer, and then enter the cylinder for combustion. The ammonia rail is specially designed for ammonia engines, has strong ammonia resistance, and high ammonia delivery efficiency. The rail cover can be installed on the injection rail body by hollow bolts, and the gaseous ammonia is guided and delivered, which realizes the characteristics of easy expansion, compact structure, and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the ammonia injector structure of the utility model after assembly;

[0027] Figure 3 It is a schematic diagram of the structure of the conveying channel of the utility model;

[0028] Figure 4 It is a right side schematic diagram of the spray rail body structure of the utility model;

[0029] Figure 5 It is a front view schematic diagram of the injection rail body structure of the utility model.

[0030] Reference numerals:

[0031] 100, injection rail body; 101, high pressure chamber; 102, low pressure chamber; 103, injection rail cover; 104, ammonia injector;

[0032] 200, air inlet channel; 201, air outlet channel;

[0033] 300, first connection port; 301, second connection port; 302, positioning port; 303, conveying channel; 304, hollow bolt; 305, conveying port; 306, transfer port;

[0034] 400, O-ring; 401, sealing gasket;

[0035] 500. Temperature and pressure sensor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] refer to Figure 1-Figure 5 , an ammonia gas rail for an ammonia engine, comprising:

[0038] Injection rail body 100;

[0039] The high pressure chamber 101 and the low pressure chamber 102 are provided on the injection rail body 100;

[0040] The spray rail upper cover 103 is provided on the spray rail body 100 and communicated with the high pressure chamber 101;

[0041] An ammonia injector 104 is connected between the injection rail upper cover 103 and the injection rail body 100 , and the ammonia injector 104 is communicated with the low-pressure chamber 102 ;

[0042] The gaseous ammonia in the high-pressure chamber 101 can be transported to the low-pressure chamber 102 through the ammonia injector 104;

[0043] The spray rail cover 103 is detachably connected to the spray rail body 100;

[0044] The liquid ammonia in the ammonia fuel tank enters the vaporizer through the outlet stop valve, the outlet solenoid valve, and the outlet flow limiting valve. The liquid ammonia (about 10 bar) enters the vaporizer through various valves and becomes gaseous ammonia (about 8-9 bar). It enters the pressure regulating tank (about 6.5 bar) after passing through the pressure reducing valve, and enters the high-pressure chamber 101 of the ammonia rail after fine filtration. The high-pressure chamber 101 and the low-pressure chamber 102 are connected by multiple ammonia injectors 104. When the ammonia injector 104 is closed, the high and low pressure chambers 102 are not connected. When the ammonia injector 104 is opened, the ammonia (about 6.5 bar) in the high-pressure chamber 101 of the ammonia rail will be sprayed into the low-pressure chamber 102 through the injector, and enter the engine intake duct after flowing through the ammonia-air mixer, and then enter the cylinder for combustion. This ammonia rail is specially designed for ammonia engines and has the characteristics of strong ammonia resistance, high ammonia delivery efficiency, easy expansion, compact structure, and simple installation.

[0045] As a further feature of the present invention, an air inlet channel 200 and an air outlet channel 201 are respectively provided at both ends of the spray rail body 100, the air inlet channel 200 is connected to the high pressure chamber 101, and the air outlet channel 201 is connected to the low pressure chamber 102;

[0046] Through the air intake channel 200 and the air outlet channel 201, high-pressure gaseous ammonia can enter the high-pressure chamber 101 through the air intake channel 200, and is guided by the injection rail cover 103 to be transported to the ammonia injector 104. The ammonia injector 104 injects the high-pressure ammonia, and the generated low-pressure ammonia can enter the subsequent ammonia-air mixer from the air outlet channel 201.

[0047] As a further feature of the present invention, it also includes:

[0048] A first connection port 300 is provided at the bottom of the injection rail upper cover 103, and a second connection port 301 is provided on the injection rail body 100 and communicates with the low-pressure chamber 102, and the ammonia injector 104 is connected between the first connection port 300 and the second connection port 301;

[0049] A positioning port 302 is provided at the bottom of the injection rail body 100 , and the positioning port 302 is communicated with the high pressure chamber 101 ;

[0050] A delivery channel 303 is provided on the side wall of the positioning port 302, the delivery channel 303 penetrates the spray rail upper cover 103, the delivery channel 303 is communicated with the first connection port 300, and a one-eighth plug is inserted into the end of the delivery channel 303 away from the positioning port 302;

[0051] By setting the first connection port 300 and the second connection port 301, the gaseous ammonia in the high-pressure chamber 101 can enter the first connection port 300 through the positioning port 302 and the delivery port 305, and then enter the ammonia injector 104, and then enter the low-pressure chamber 102 through the second connection port 301, thereby achieving the purpose of transporting the gaseous ammonia. The first connection port 300 and the second connection port 301 can also locate the position of the ammonia injector 104, which is convenient for the subsequent installation of the ammonia injector 104.

[0052] As a further feature of the present invention, the positioning port 302 penetrates the spray rail upper cover 103, a hollow bolt 304 is provided in the positioning port 302, the hollow bolt 304 is inserted into the high pressure chamber 101, and a delivery port 305 is provided on the hollow bolt 304;

[0053] By setting the hollow bolts 304, the setting of the hollow bolts 304 can realize the fixing of the spray rail cover 103 on the spray rail body 100, and at the same time facilitate the disassembly and assembly of the ammonia gas rail, thereby achieving the effects of easy expansion, compact structure and easy installation.

[0054] As a further feature of the present invention, the side wall of the positioning port 302 is provided with a transfer port 306 connected to the delivery port 305, and the diameter of the transfer port 306 is larger than that of the positioning port 302;

[0055] By setting the adapter 306, when the operator uses the hollow bolt 304 to install the spray rail cover 103 on the spray rail body 100, the delivery port 305 and the delivery channel 303 may be misaligned. For this reason, a adapter 306 with a diameter larger than the positioning port 302 is opened on the side wall of the positioning port 302 to ensure the normal delivery of the subsequent gaseous ammonia.

[0056] As a further feature of the present invention, an O-ring 400 is connected between the spray rail upper cover 103 and the spray rail body 100;

[0057] By providing the O-ring 400 , it can be ensured that the high-pressure gaseous ammonia in the high-pressure chamber 101 will not leak from the positioning port 302 .

[0058] As a further feature of the present invention, a sealing gasket 401 is connected between the hollow bolt 304 and the spray rail upper cover 103;

[0059] By providing the sealing gasket 401 , the sealing between the hollow bolt 304 and the injection rail upper cover 103 can be ensured.

[0060] As a further feature of the present invention, two temperature and pressure sensors 500 are plugged into the injection rail body 100 , wherein one temperature and pressure sensor 500 is plugged into the high-pressure chamber 101 , and the other temperature and pressure sensor 500 is plugged into the low-pressure chamber 102 ;

[0061] By providing two temperature and pressure sensors 500 , the temperature and pressure data in the high-pressure chamber 101 and the low-pressure chamber 102 can be monitored in real time, thereby improving safety.

[0062] Working principle: Liquid ammonia in the ammonia fuel tank enters the vaporizer through the outlet stop valve, outlet solenoid valve, and outlet flow limiting valve. Liquid ammonia (about 10 bar) enters the vaporizer through various valves and becomes gaseous ammonia (about 8-9 bar). It enters the pressure regulating tank (about 6.5 bar) after passing through the pressure reducing valve. After fine filtration, it enters the high-pressure chamber 101 of the ammonia rail. The high-pressure chamber 101 and the low-pressure chamber 102 are connected by multiple ammonia injectors 104. When the ammonia injectors 104 are closed, the high-pressure and low-pressure chambers 102 are not When the ammonia injector 104 is opened, the ammonia (about 6.5 bar) in the high-pressure chamber 101 of the ammonia rail will be sprayed into the low-pressure chamber 102 through the injector, and enter the engine intake duct after flowing through the ammonia-air mixer, and then enter the cylinder for combustion. The ammonia rail is specially designed for ammonia engines, has strong ammonia resistance and high ammonia transportation efficiency. The air rail cover can be installed on the injection rail body 100 by using the hollow bolt 304, and the gaseous ammonia can be guided and transported, realizing the characteristics of easy expansion, compact structure, and easy installation.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonia gas rail for an ammonia engine, characterized in that: include: Injection rail body; A high-pressure chamber and a low-pressure chamber are provided on the injection rail body; A spray rail upper cover, disposed on the spray rail body and connected to the high-pressure chamber; an ammonia injector, connected between the injection rail upper cover and the injection rail body, the ammonia injector being in communication with the low-pressure chamber; Wherein, the gaseous ammonia in the high-pressure chamber can be transported to the low-pressure chamber through an ammonia injector; Wherein, the spray rail upper cover is detachably connected to the spray rail main body.

2. The ammonia rail for an ammonia engine according to claim 1, characterized in that: An air inlet channel and an air outlet channel are respectively provided at two ends of the injection rail body. The air inlet channel is communicated with the high-pressure chamber, and the air outlet channel is communicated with the low-pressure chamber.

3. The ammonia rail for an ammonia engine according to claim 1, characterized in that: Also includes: A first connection port is provided at the bottom of the injection rail upper cover, and a second connection port is provided on the injection rail body and communicates with the low-pressure chamber, and the ammonia injector is connected between the first connection port and the second connection port; A positioning port is provided at the bottom of the injection rail body, and the positioning port is communicated with the high-pressure chamber; A delivery channel is provided on the side wall of the positioning port, the delivery channel passes through the spray rail upper cover, the delivery channel is communicated with the first connecting port, and a one-eighth plug is inserted in one end of the delivery channel away from the positioning port.

4. The ammonia rail for an ammonia engine according to claim 3, characterized in that: The positioning port passes through the injection rail upper cover, a hollow bolt is arranged in the positioning port, the hollow bolt is inserted into the high-pressure chamber, and a conveying port is opened on the hollow bolt.

5. The ammonia gas rail for an ammonia engine according to claim 4, characterized in that: A transfer port communicating with the delivery port is formed on the side wall of the positioning port, and a diameter of the transfer port is larger than that of the positioning port.

6. The ammonia gas rail for an ammonia engine according to claim 1, characterized in that: An O-ring is connected between the spray rail upper cover and the spray rail body.

7. The ammonia rail for an ammonia engine according to claim 4, characterized in that: A sealing gasket is connected between the hollow bolt and the injection rail upper cover.

8. The ammonia rail for an ammonia engine according to claim 1, characterized in that: It also includes two temperature and pressure sensors plugged into the injection rail body, one of the temperature and pressure sensors is plugged into the high-pressure chamber, and the other temperature and pressure sensor is plugged into the low-pressure chamber.

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