High-efficiency low-nitrogen low-carbon water-cooling premixed combustion test platform

Abstract

The utility model relates to the technical field of combustion equipment, in particular to a high-efficiency low-nitrogen low-carbon water-cooling premixed combustion test platform which comprises a combustor, a mixer is installed on the back face of the combustor and connected with a gas header pipe and an air inlet pipe, gas is introduced into the outer end of the gas header pipe, combustion-supporting air is introduced into the outer end of the air inlet pipe, and the combustion-supporting air is introduced into the outer end of the air inlet pipe. The outer end of the gas branch pipe is provided with a burning torch, and the outer end of the air inlet pipe is connected with an air blower. According to the high-efficiency low-nitrogen low-carbon water-cooling premixed combustion test platform, an ignition test can be carried out on a manufactured low-nitrogen low-carbon combustor through the test platform, and whether the manufactured low-nitrogen low-carbon combustor can achieve the required working performance or not is accurately judged. Therefore, the quality of the combustor can be ensured before the combustor leaves a factory, and the problems of maintenance inconvenience and customer satisfaction in the later use process are reduced. The test platform adopts a water-cooling premixed combustion technology, fuel gas and combustion-supporting air are fully mixed through a mixer, and the combustion efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of combustion equipment technology, specifically to a high-efficiency, low-nitrogen, low-carbon water-cooled premixed combustion test platform. Background Technology

[0002] Gas-fired boilers produce nitrogen oxides (NOx) during combustion, a significant environmental issue that cannot be ignored during boiler operation. NOx is a major component of atmospheric pollution, ozone layer depletion, and photochemical smog formation; therefore, reducing NOx emissions is a primary focus of boiler retrofitting. The key to boiler retrofitting lies in adopting low-NOx, low-carbon burners to effectively reduce NOx emissions.

[0003] However, existing low-NOx and low-carbon burners lack adequate testing equipment during production. This makes it impossible to accurately determine whether the manufactured low-NOx and low-carbon burners can achieve the required performance. This uncertainty may cause maintenance difficulties during later use and even affect customer satisfaction. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency, low-NOx, low-carbon water-cooled premixed combustion test platform to solve the problem mentioned in the background art that the existing low-NOx, low-carbon burners lack certain test equipment during the production process.

[0005] To achieve the above objectives, this utility model provides a high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform, including a burner, a mixer mounted on the back of the burner, the mixer being connected to a main gas pipe and an air inlet pipe, gas being introduced into the outer end of the main gas pipe, combustion air being introduced into the outer end of the air inlet pipe, a gas branch pipe being connected to the main gas pipe, an ignition gun being mounted on the outer end of the gas branch pipe, and a blower being connected to the outer end of the air inlet pipe.

[0006] Preferably, the main gas pipe is equipped with a main pipe ball valve, a filter, a low-pressure switch, a first gas control valve, a second gas control valve, a high-pressure switch, and a gas valve regulator in sequence.

[0007] Preferably, a branch ball valve, a solenoid valve, and a branch pressure gauge are installed sequentially on the gas branch pipe.

[0008] Preferably, a pressure switch is installed on the air inlet pipe.

[0009] As a preferred option, a control cabinet is also included.

[0010] Preferably, the heat-receiving surface of the burner is equipped with water-cooled wall tubes.

[0011] Preferably, a main gas pressure gauge is installed at both ends of the main gas pipe, and a gas differential pressure measuring hose is connected between the gas inlet of the second gas control valve and the output of the gas valve regulator.

[0012] Preferably, a leak detection switch is installed at the end of the gas branch pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This high-efficiency, low-NOx, low-carbon water-cooled premixed combustion test platform allows for ignition tests on manufactured low-NOx, low-carbon burners, accurately determining whether they achieve the required performance. This helps ensure burner quality before delivery, reducing maintenance inconvenience and customer satisfaction issues during later use.

[0015] The test platform employs water-cooled premixed combustion technology, which thoroughly mixes the fuel gas and combustion air through a mixer, improving combustion efficiency. Simultaneously, the burner's heating surface is equipped with water-cooled wall tubes, effectively cooling the heat generated during combustion and further enhancing the burner's stability and durability.

[0016] This platform focuses on testing low-NOx and low-carbon burners, helping to optimize burner design and reduce nitrogen oxide emissions during combustion. This meets environmental protection requirements and helps reduce air pollution and ozone layer depletion.

[0017] The test platform integrates multiple components such as the main gas pipe, air inlet pipe, gas branch pipes, ignition gun, blower, and control cabinet, exhibiting a high degree of integration and ease of operation. Furthermore, various valves, filters, pressure gauges, and other equipment are installed on the main gas pipe and gas branch pipes to ensure the accuracy and safety of the testing process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the pipeline connection of this utility model;

[0021] Figure 4 This is a schematic diagram of the gas distribution pipe structure in this utility model;

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Burner; 2. Mixer; 3. Gas main pipe; 31. Main pipe ball valve; 32. Filter; 33. Low-pressure switch; 34. First gas control valve; 35. Second gas control valve; 36. High-pressure switch; 37. Gas valve regulator; 38. Main pipe pressure gauge; 39. Gas differential pressure measuring hose; 4. Gas branch pipe; 41. Branch pipe ball valve; 42. Solenoid valve; 43. Branch pipe pressure gauge; 44. Ignition gun; 45. Leak detection switch; 5. Air inlet pipe; 51. Blower; 52. Air pressure switch; 6. Control cabinet; 7. Water-cooled wall tube. Detailed Implementation

[0024] 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.

[0025] This invention provides a high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform, such as... Figures 1-4 As shown, the device includes a burner 1, with a mixer 2 mounted on its back. The mixer 2 is connected to a main gas pipe 3 and an air inlet pipe 5. Gas is introduced into the outer end of the main gas pipe 3, and combustion air is introduced into the outer end of the air inlet pipe 5. A gas branch pipe 4 is connected to the outer end of the main gas pipe 3, and an ignition gun 44 is installed at the outer end of the gas branch pipe 4. A blower 51 is connected to the outer end of the air inlet pipe 5. The mixer 2 mounted on the back of the burner 1, as a key component for mixing gas and combustion air, effectively promotes the full integration of the two. Gas is introduced into the main gas pipe 3, and combustion air is introduced into the air inlet pipe 5. After mixing in the mixer 2, the two provide excellent combustion conditions for the burner 1. At the same time, the gas branch pipe 4 connected to the main gas pipe 3 and the ignition gun 44 installed at its outer end ensure reliable start-up and stable combustion. The blower 51 connected to the outer end of the air inlet pipe 5 provides sufficient combustion air to the burner, ensuring complete combustion and efficiency. This design not only improves combustion efficiency but also helps reduce nitrogen oxide emissions, achieving a high-efficiency, low-nitrogen, and low-carbon combustion effect, providing strong technical support for the research and development and testing of low-nitrogen and low-carbon burners.

[0026] In this embodiment, the main gas pipe 3 is sequentially equipped with a main pipe ball valve 31, a filter 32, a low-pressure switch 33, a first gas control valve 34, a second gas control valve 35, a high-pressure switch 36, and a gas valve regulator 37. The main pipe ball valve 31 is used to control the flow of gas, the filter 32 is used to remove impurities from the gas, the low-pressure switch 33 and the high-pressure switch 36 are used to monitor whether the gas pressure is within a safe range, the first gas control valve 34 and the second gas control valve 35 are used to precisely regulate the gas flow, and the gas valve regulator 37 provides more precise gas flow control, thus improving the overall stability and reliability of the gas supply.

[0027] Specifically, a branch ball valve 41, a solenoid valve 42, and a branch pressure gauge 43 are installed sequentially on the gas branch pipe 4. The branch ball valve 41 is used to control the on / off of the gas branch pipe, the solenoid valve 42 enables rapid gas shut-off and opening, and the branch pressure gauge 43 is used to monitor the pressure in the gas branch pipe in real time, ensuring the safety and controllability of the gas branch pipe system.

[0028] Furthermore, a pressure switch 52 is installed on the air inlet duct 5. The pressure switch 52 is used to monitor the air pressure inside the air inlet duct 5 to ensure a stable supply of combustion air that meets combustion requirements. When the air pressure is abnormal, the pressure switch 52 can promptly issue a signal to protect the combustion system from damage, thereby improving the safety and stability of the combustion system.

[0029] Furthermore, it also includes control cabinet 6. Control cabinet 6 integrates the control elements of the combustion system, realizing centralized control and management of the combustion process. Through control cabinet 6, operators can easily monitor the operating status of the combustion system, adjust combustion parameters, and improve the automation level and ease of operation of the combustion system.

[0030] Furthermore, the heat-receiving surface of burner 1 is equipped with water-cooled wall tubes 7. The design of the water-cooled wall tubes 7 effectively cools the heat-receiving surface of burner 1, preventing overheating and damage, and improving the durability and reliability of the burner. At the same time, the water-cooled wall tubes 7 can also recover some of the heat generated by combustion, improving energy utilization efficiency.

[0031] Furthermore, pressure gauges 38 are installed at both ends of the main gas pipe 3 to ensure stable pressure in the gas supply system. A gas differential pressure measuring hose 39 is connected between the inlet of the second gas control valve 35 and the output of the gas valve regulator 37. The gas differential pressure measuring hose 39 is used to measure the pressure difference between the inlet of the second gas control valve 35 and the output of the gas valve regulator 37, providing a basis for precise control of gas flow and improving the accuracy and reliability of the gas supply system.

[0032] Furthermore, a leak detection switch 45 is installed at the end of the gas branch pipe 4. The leak detection switch 45 is used to detect whether there is a leak in the gas branch pipe 4. When a leak occurs in the gas branch pipe 4, the leak detection switch 45 can promptly send a signal to remind the operator to handle the situation, preventing safety hazards and energy waste caused by gas leaks.

[0033] When using the high-efficiency, low-NOx, low-carbon water-cooled premixed combustion test platform of this invention, after the control cabinet 6 is powered on, a system self-test is first performed to ensure that all equipment is in normal condition. After the self-test is completed, the control cabinet 6 checks the operating conditions, and the burner 1 can only be started if the operating conditions are met.

[0034] Gas enters the system through the gas main pipe 3, passing sequentially through the main pipe ball valve 31 (controlling gas flow), filter 32 (removing impurities from the gas), low-pressure switch 33 (monitoring low gas pressure protection), first gas control valve 34, second gas control valve 35 (precisely regulating gas flow), high-pressure switch 36 (monitoring high gas pressure protection), and gas valve regulator 37 (providing finer gas flow control). Combustion air enters through the air inlet pipe 5, with sufficient airflow provided by the blower 51. The air pressure switch 52 on the air inlet pipe 5 monitors the air pressure to ensure a stable supply of combustion air that meets combustion requirements.

[0035] Before burner 1 starts, blower 51 operates at its maximum frequency of 50Hz to purge the furnace for 60 seconds to remove residual gas and dust. After purging, control cabinet 6 outputs a signal to reduce blower 51 frequency to the ignition frequency. The first gas control valve 34 opens, and the leak detection switch 45 between gas control valves 1 and 2 performs a gas leak check. If the leak is detected correctly, the solenoid valve 42 on the gas branch pipe 4 opens, and the ignition gun 44 begins ignition. At this time, the main flame detector of burner 1 detects the ignition flame. After the ignition flame detection is normal, the second gas control valve 35 opens, and the main flame is activated. The main flame detector then detects the main flame. After the main flame detection is normal, the ignition gun solenoid valve 42 closes, and burner 1 enters normal operation.

[0036] The control cabinet 6 automatically adjusts the combustion status according to the boiler load, and controls the gas flow and combustion air volume by adjusting the frequency of the gas valve regulator 37 and the blower 51 to achieve efficient, low nitrogen and low carbon combustion effect.

[0037] A main gas pipe 3 is equipped with a main pipe pressure gauge 38 at both ends to ensure stable gas supply system pressure. A gas differential pressure measuring hose 39 is connected between the inlet end of the second gas control valve 35 and the output end of the gas valve regulator 37 to measure the differential pressure and provide a basis for precise control of gas flow. A leak detection switch 45 is installed at the end of the gas branch pipe 4 to detect whether there is a leak in the gas branch pipe. When a leak occurs, the leak detection switch 45 will promptly issue a signal to remind the operator to handle the situation. The air pressure switch 52 continuously monitors the air pressure in the air inlet pipe 5. When the air pressure is abnormal, it will promptly issue a signal to protect the combustion system from damage.

[0038] The heat-receiving surface of burner 1 is equipped with water-cooled wall tubes 7, which effectively cool the burner, prevent overheating and damage, and improve durability and reliability. The water-cooled wall tubes 7 can also recover some of the heat generated by combustion, improving energy utilization efficiency.

[0039] Finally, it should be noted that the electronic components in the burner 1, mixer 2, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform, comprising a burner (1), characterized in that: A mixer (2) is installed on the back of the burner (1). The mixer (2) is connected to a gas main pipe (3) and an air inlet pipe (5). Gas is introduced into the outer end of the gas main pipe (3), and combustion air is introduced into the outer end of the air inlet pipe (5). A gas branch pipe (4) is connected to the outer end of the gas main pipe (3). An ignition gun (44) is installed at the outer end of the gas branch pipe (4). A blower (51) is connected to the outer end of the air inlet pipe (5).

2. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: The gas main pipe (3) is sequentially equipped with a main pipe ball valve (31), a filter (32), a low-pressure switch (33), a first gas control valve (34), a second gas control valve (35), a high-pressure switch (36), and a gas valve regulator (37).

3. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: The gas branch pipe (4) is sequentially equipped with a branch ball valve (41), a solenoid valve (42), and a branch pressure gauge (43).

4. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: A pressure switch (52) is installed on the air inlet pipe (5).

5. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: It also includes the control cabinet (6).

6. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: The heat-receiving surface of the burner (1) is equipped with water-cooled wall tubes (7).

7. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 2, characterized in that: The gas main pipe (3) is equipped with a main pipe pressure gauge (38) at both ends, and a gas differential pressure measuring hose (39) is connected between the gas inlet end of the second gas control valve (35) and the output end of the gas valve regulator (37).

8. The high-efficiency, low-NOx, low-carbon, water-cooled premixed combustion test platform according to claim 1, characterized in that: A leak detection switch (45) is installed at the end of the gas branch pipe (4).

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