A burner testing apparatus

Abstract

This application relates to the field of burner technology and provides a burner testing device, including an air supply port and a gas supply port. The air supply port is connected to the burner under test via a primary air pipeline and a secondary air pipeline. The gas supply port is connected to the burner under test via a gas pipeline. The air supply port and the gas supply port are also connected to the burner under test via a premixer. Flow control components are respectively provided on the primary air pipeline, the secondary air pipeline, the gas pipeline, the connection path between the air supply port and the premixer, and the connection path between the gas supply port and the premixer, which can test the performance of burners in different operating modes.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and in particular to a burner testing device. Background Technology

[0002] The burner is the core heat exchanger and heat generation component of a gas water heater. Its combustion stability, gas mixing uniformity, and airflow distribution directly determine the overall thermal efficiency, temperature comfort, and operational safety of the unit. Therefore, it is necessary to test the combustion performance of the burner to optimize its design and thus improve the performance of the gas water heater. Summary of the Invention

[0003] This application provides a burner testing device for testing the combustion performance of a burner.

[0004] In a first aspect, this application provides a burner testing device, including an air supply port and a gas supply port; the air supply port is connected to the burner under test via a primary air pipeline and a secondary air pipeline; the gas supply port is connected to the burner under test via a gas pipeline; the air supply port and the gas supply port are also connected to the burner under test via a premixer; wherein, flow control components are respectively provided on the primary air pipeline, the secondary air pipeline, the gas pipeline, the connection path between the air supply port and the premixer, and the connection path between the gas supply port and the premixer.

[0005] In one embodiment, the premixer includes a gas inlet, an air inlet, and an outlet; the burner testing device further includes: a housing, a first gas supply pipe, a second gas supply pipe, a third gas supply pipe, a fourth gas supply pipe, and a fifth gas supply pipe; the housing forms a receiving cavity; the receiving cavity is used to receive the burner under test; the burner under test includes a burner inlet; the outlet is connected to the burner inlet; one end of the first gas supply pipe is connected to an air supply port, and the other end of the first gas supply pipe is connected to an air inlet; one end of the second gas supply pipe is connected to a gas supply port, and the second gas supply pipe... The other end is connected to the gas inlet; the premixer is located on the first gas supply pipe and the second gas supply pipe; one end of the third gas supply pipe is connected to the air supply port, and the other end of the third gas supply pipe is connected to the accommodating cavity; the third gas supply pipe is a secondary air pipeline; one end of the fourth gas supply pipe is connected to the air supply port, and the other end of the fourth gas supply pipe is connected to the burner inlet; the fourth gas supply pipe is a primary air pipeline; one end of the fifth gas supply pipe is connected to the gas supply port, and the other end of the fifth gas supply pipe is connected to the burner inlet; the fifth gas supply pipe is a gas pipeline.

[0006] In one embodiment, the housing is provided with an opening, and the opening is provided with a visualization partition; the flame hole of the fire briquette to be tested is located within the visible area of ​​the opening.

[0007] In one embodiment, the burner testing apparatus further includes an image acquisition device, wherein the orthographic projection of the image acquisition port of the image acquisition device onto the housing is located within the opening.

[0008] In one embodiment, the housing has a smoke outlet duct that communicates with the receiving cavity; the burner testing device further includes a flue gas detection device disposed in the smoke outlet duct; or, the burner testing device further includes a flue gas sampling device disposed in the smoke outlet duct.

[0009] In one embodiment, the burner testing apparatus further includes a temperature sensor fixed to the housing, which is used to sense the flame temperature of the burner under test.

[0010] In one embodiment, the burner testing apparatus further includes a vibration component for driving the burner under test to vibrate.

[0011] In one embodiment, the third gas supply pipe and the fourth gas supply pipe are independent of each other.

[0012] In one embodiment, the air coefficient of the burner testing device is 0.6 to 2.2.

[0013] In one embodiment, the flow control element includes a flow meter and a control valve.

[0014] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a burner testing device, which includes an air supply port and a gas supply port. The air supply port is connected to the burner under test via a primary air pipeline and a secondary air pipeline. The gas supply port is connected to the burner under test via a gas pipeline. The air supply port and the gas supply port are also connected to the burner under test via a premixer. Flow control components are respectively installed on the primary air pipeline, the secondary air pipeline, the gas pipeline, the connection path between the air supply port and the premixer, and the connection path between the gas supply port and the premixer. By configuring the burner testing device as described above, the combustion performance of the burner can be tested, and this burner testing device can test the combustion performance of burners in different operating modes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of the burner testing device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the pipe connections of the burner testing device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the premixer provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the fire duct under test provided in the embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] The burner is the core heat exchanger and heat generation component of a gas water heater. Its combustion stability, gas mixing uniformity, and airflow distribution directly determine the overall thermal efficiency, temperature comfort, and operational safety of the unit. Therefore, it is necessary to test the combustion performance of the burner to optimize its design and thus improve the performance of the gas water heater.

[0022] Therefore, embodiments of this application provide a burner testing apparatus for performing performance tests on burners.

[0023] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the main structure of the burner testing device provided in the embodiments of this application. Figure 2 This is a schematic diagram of the pipe connections for the burner testing device provided in an embodiment of this application. Figure 3 This is a schematic diagram of the premixer provided in the embodiments of this application. Figure 4 This is a schematic diagram of the structure of the fire duct under test provided in the embodiment of this application.

[0024] The burner testing device includes an air supply port, a gas supply port, a primary air line, a secondary air line, a gas line, and a premixer 13. The air supply port is connected to the burner under test 12 through the primary air line and the secondary air line; the gas supply port is connected to the burner under test 12 through the gas line; the air supply port and the gas supply port are also connected to the burner under test 12 through the premixer 13; wherein, flow control components 19 are respectively installed on the primary air line, the secondary air line, the gas line, the connection path between the air supply port and the premixer 13, and the connection path between the gas supply port and the premixer 13.

[0025] The air supply port is used to connect to the air supply device 2; in one embodiment, the air supply port includes a fan. The gas supply port is used to connect to the gas supply device 3; in one embodiment, the gas supply device 3 includes at least one of a gas pressure stabilizing tank and a municipal gas pipeline. The flow control component 19 is used to regulate the flow rate of the fluid in the pipeline.

[0026] By controlling the flow control element 19 on the primary air line, secondary air line, gas line, the connection path between the air supply port and the premixer 13, and the connection path between the gas supply port and the premixer 13, the combustion performance of the burner in different operating modes can be tested. Specifically, the flow control components 19 on the primary air line, secondary air line, and gas line are all in a closed state, while the flow control components 19 on the connection path between the air supply port and the premixer 13 and the connection path between the gas supply port and the premixer 13 are all in an open state, which is the full premix mode; the flow control components 19 on the primary air line and gas line are all in a closed state, while the flow control components 19 on the connection path between the secondary air line, air supply port, and premixer 13 and the connection path between the gas supply port and the premixer 13 are all in an open state, which is the semi-premix mode; the flow control components 19 on the primary air line, secondary air line, and gas line are all in an open state, while the flow control components 19 on the connection path between the air supply port and the premixer 13 and the connection path between the gas supply port and the premixer 13 are all in a closed state, which is the non-premix mode.

[0027] The burner testing device includes a housing 11, a premixer 13, a first gas supply pipe 14, a second gas supply pipe 15, a third gas supply pipe 16, a fourth gas supply pipe 17, and a fifth gas supply pipe 18.

[0028] The housing 11 serves as the main frame and forms a receiving cavity 111 for housing components such as the flame arrester 12 to be tested. The flame arrester 12 to be tested is disposed within the receiving cavity 111. The flame arrester 12 to be tested has a flame arrester air inlet 121 and multiple flame holes 122. The flame arrester 12 to be tested has a connecting channel 123 inside, which connects the flame holes 122 and the flame arrester air inlet 121. Gas enters the flame arrester 12 to be tested through the flame arrester air inlet 121 and generates a flame at the flame holes 122.

[0029] The premixer 13 includes a gas inlet 131, an air inlet 132, and an outlet 133, with the outlet 133 connected to the burner inlet 121. In one embodiment, the outlet 133 and the burner inlet 121 are connected by a pipe. In another embodiment, the housing 11 has a first opening that communicates with the burner inlet 121 of the burner under test; the gas-air mixture from the premixer 13 is introduced into the burner under test 12 through the outlet 133, the first opening of the housing 11, and the burner inlet 121, generating a flame at the flame hole 122.

[0030] One end of the first air supply pipe 14 is connected to the air supply port, and the other end of the first air supply pipe 14 is connected to the air inlet 132 of the premixer 13; air is introduced into the premixer 13 through the air supply port, the first air supply pipe 14, and the air inlet 132.

[0031] One end of the second gas supply pipe 15 is connected to the gas supply port, and the other end of the second gas supply pipe 15 is connected to the gas inlet 131 of the premixer 13; gas is introduced into the premixer 13 through the gas supply port, the second gas supply pipe 15, and the gas inlet 131. The premixer 13 is located on the first gas supply pipe 14 and the second gas supply pipe 15.

[0032] One end of the third air supply pipe 16 is connected to the air supply port, and the other end of the third air supply pipe 16 is connected to the receiving cavity 111 of the housing 11, supplying air to the burner 12 under test and supplying secondary air to the burner 12 under test. That is to say, the third air supply pipe 16 is a secondary air pipeline. In one embodiment, the housing 11 is provided with a second opening, which is connected to the receiving cavity 111; the other end of the third air supply pipe 16 is connected to the second opening of the housing 11, and air enters the receiving cavity 111 through the third air supply pipe 16 and the second opening of the housing 11. In one embodiment, there is a gap between the cavity wall of the accommodating cavity 111 and the test burner 12, and / or multiple test burners 12 are provided in the accommodating cavity 111, with gaps between adjacent test burners 12. Air enters the accommodating cavity 111 through the gap between the cavity wall of the accommodating cavity 111 and the test burner 12 and / or the gap between adjacent test burners 12 via the third air supply pipe 16 and the second opening of the housing 11, thereby realizing secondary air entry into the accommodating cavity 111.

[0033] One end of the fourth air supply pipe 17 is connected to the air supply port, and the other end of the fourth air supply pipe 17 is connected to the burner inlet 121 of the burner under test 12, providing primary air to the burner under test 12. That is to say, the fourth air supply pipe 17 is a primary air pipeline. In one embodiment, the housing 11 is provided with a third opening, which communicates with the burner inlet 121; air is introduced into the burner under test 12 through the fourth air supply pipe 17, the third opening of the housing 11, and the burner inlet 121 of the burner under test 12, realizing the introduction of primary air into the burner under test 12.

[0034] One end of the fifth gas supply pipe 18 is connected to the gas supply port, and the other end of the fifth gas supply pipe 18 is connected to the burner inlet 121 of the burner under test 12, providing gas to the burner under test 12. In other words, the fifth gas supply pipe 18 is a gas pipeline. In one embodiment, the housing 11 is provided with a fourth opening, which is connected to the burner inlet 121; gas is introduced into the burner under test 12 through the fifth gas supply pipe 18, the fourth opening of the housing 11, and the burner inlet 121 of the burner under test 12, thereby realizing the introduction of gas into the burner under test 12.

[0035] By configuring the gas supply pipeline of the burner testing device as described above, the burner testing device can test the combustion performance of burners in different operating modes. Specifically, the burners in different operating modes include fully premixed mode, semi-premixed mode, and non-premixed mode. For the fully premixed mode, gas is introduced into the premixer 13 through the second gas supply pipeline 15 and the gas inlet 131, and air is introduced into the premixer 13 through the first gas supply pipeline 14 and the air inlet 132. The gas and air are fully mixed in the premixer 13. The gas-air mixture is introduced into the test burner 12 through the outlet 133 of the premixer 13 and the burner inlet 121 of the burner 12 under test, and burns in the flame hole 122 of the burner 12 under test. In the semi-premixed mode, gas is introduced into the premixer 13 through the second gas supply pipe 15 and the gas inlet 131, and air is introduced into the premixer 13 through the first gas supply pipe 14 and the air inlet 132. The gas and air are fully mixed in the premixer 13. The gas-air mixture is introduced into the burner 12 under test through the outlet 133 of the premixer 13 and the burner inlet 121 of the burner 12 under test. At the same time, air enters the accommodating cavity 111 containing the burner 12 under test through the third gas supply pipe 16 to achieve secondary air replenishment. In the non-premixed mode, the gas is introduced into the test burner 12 through the fifth gas supply pipe 18 and the burner inlet 121 of the test burner 12. Air enters the test burner 12 through the fourth gas supply pipe 17 and the burner inlet 121 of the test burner 12. The gas and primary air are mixed in the test burner 12 and burned in the flame hole 122 of the test burner 12. At the same time, air enters the accommodating cavity 111 containing the test burner 12 through the third gas supply pipe 16 to realize the replenishment of secondary air.

[0036] Based on the burner optimization requirements, the burner testing device provided in this application embodiment can select different modes of burners for performance testing in order to optimize the burner design and thereby improve the performance of the gas water heater.

[0037] In one embodiment, each of the first gas supply pipe 14, the second gas supply pipe 15, the third gas supply pipe 16, the fourth gas supply pipe 17, and the fifth gas supply pipe 18 is equipped with a flow control element 19. The flow control element 19 refers to a structural component that controls whether gas flows through the pipe and the gas flow rate. By installing the flow control element 19 on the first gas supply pipe 14, the second gas supply pipe 15, the third gas supply pipe 16, the fourth gas supply pipe 17, and the fifth gas supply pipe 18, the flow rate of each gas supply pipe can be individually and precisely adjusted. Regardless of the operating mode, the gas flow rate and air flow can be individually controlled through the flow control element 19, and key performance data (such as flameout boundary, seismic resistance limit, gas concentration uniformity, flow velocity uniformity, etc.) can be tested to identify specific defects in the burner's combustion performance.

[0038] In one embodiment, by adjusting the valve opening of the flow control element 19 on the first gas supply pipe 14 to open, the valve opening of the flow control element 19 on the second gas supply pipe 15 to open, the valve opening of the flow control element 19 on the third gas supply pipe 16 to close, the valve opening of the flow control element 19 on the fourth gas supply pipe 17 to close, and the valve opening of the flow control element 19 on the fifth gas supply pipe 18 to close, the burner testing device operates in a fully premixed mode. By adjusting the valve opening of the flow control element 19 on the first gas supply pipe 14 and the valve opening of the flow control element 19 on the second gas supply pipe 15, the air coefficient in the fully premixed mode can be adjusted, and the combustion performance under different air coefficients in the fully premixed mode can be tested. For example, the air coefficient of the burner testing device in the fully premixed mode is 0.6 to 1.8.

[0039] In one embodiment, by adjusting the valve opening of the flow control element 19 on the first gas supply pipe 14 to open, the valve opening of the flow control element 19 on the second gas supply pipe 15 to open, the valve opening of the flow control element 19 on the third gas supply pipe 16 to open, the valve opening of the flow control element 19 on the fourth gas supply pipe 17 to close, and the valve opening of the flow control element 19 on the fifth gas supply pipe 18 to close, the burner testing device operates in a semi-premixed mode. By adjusting the valve opening of the flow control element 19 on the first gas supply pipe 14, the second gas supply pipe 15, and the third gas supply pipe 16, the air coefficient in the semi-premixed mode can be adjusted, and the combustion performance under different air coefficients in the semi-premixed mode can be tested. For example, the air coefficient of the burner testing device in the semi-premixed mode is 0.6 to 2.2.

[0040] In one embodiment, by adjusting the valve opening of the flow control element 19 on the first gas supply pipe 14 to closed, the valve opening of the flow control element 19 on the second gas supply pipe 15 to closed, the valve opening of the flow control element 19 on the third gas supply pipe 16 to open, the valve opening of the flow control element 19 on the fourth gas supply pipe 17 to open, and the valve opening of the flow control element 19 on the fifth gas supply pipe 18 to open, the burner testing device operates in non-premixed mode. By adjusting the valve opening of the flow control element 19 on the third gas supply pipe 16, the fourth gas supply pipe 17, and the fifth gas supply pipe 18, the air coefficient in non-premixed mode can be adjusted, and the combustion performance under different air coefficients in non-premixed mode can be tested. For example, the air coefficient of the burner testing device in non-premixed mode is 0.6 to 2.2.

[0041] In one embodiment, the flow control element 19 includes a flow meter 191 and a control valve 192.

[0042] Flow meter 191 refers to a structural component used for real-time measurement of gas flow, such as a mass flow meter or thermal flow meter. Control valve 192 refers to a valve used for dynamic regulation of gas flow, such as a solenoid valve or electric regulating valve. Flow meter 191 and control valve 192 are connected in series in the gas supply pipeline. Flow meter 191 is located upstream of control valve 192 to monitor flow data, and control valve 192 is located downstream to adjust its opening based on the data. The placement of flow meter 191 ensures accurate real-time acquisition of gas flow data, while the placement of control valve 192 ensures rapid and stable dynamic response in flow regulation. The combination of flow meter 191 and control valve 192 forms a closed-loop control system, further improving flow control accuracy, which is beneficial for analyzing flame conditions under different operating modes and different air coefficients.

[0043] In one implementation, such as Figure 1 As shown, the housing 11 has an opening 112, and the opening 112 has a visualization partition 113. The flame hole 122 of the flame pack 12 under test is located within the visible area of ​​the opening 112.

[0044] The visualization partition 113 can be made of a transparent or translucent material; in one embodiment, the material of the visualization partition 113 includes one or more of glass and acrylic sheet. The visualization partition 113 is connected to the opening 112 of the housing 11; in one embodiment, the visualization partition 113 and the housing 11 are snap-fit ​​connected. The visualization partition 113 cooperates with the housing 11, making the receiving cavity 111 a closed cavity. The flame hole 122 of the burner under test 12 is located in the visible area of ​​the opening 112. During the test, the flame combustion status of the flame hole 122 of the burner under test 12 can be seen through the visualization partition 113. The combustion status can be analyzed in real time without disassembling the device, thereby accurately locating the gas concentration and flow rate distribution problems, which is helpful in confirming the specific defects of the burner's combustion performance.

[0045] In one embodiment, the flame color of the burner 12 under test is observed through a visualization partition 113, and the uniformity of the gas concentration can be determined by the flame color. Gas concentration refers to the mixing ratio of gas and air. If the flame color is consistent throughout the test combustion area, the gas concentration is relatively uniform, indicating a relatively uniform mixture of gas and air; conversely, the mixture is less uniform. It can be understood that if testing a single burner 12, the test combustion area is the area formed by the multiple flame holes 122 of that burner 12; if testing multiple burners 12, the test combustion area is the area formed by the multiple flame holes 122 of each burner 12.

[0046] In one embodiment, the flame height of the burner 12 under test is observed through a visualization partition 113, and the uniformity of the gas flow rate can be determined by the flame height. If the flame height is consistent throughout the test combustion area, the gas flow rate is relatively uniform; conversely, the gas flow rate is not uniform. It can be understood that if a single burner 12 is being tested, the test combustion area is the region formed by the multiple flame holes 122 of that burner 12; if multiple burners 12 are being tested, the test combustion area is the region formed by the multiple flame holes 122 of each burner 12.

[0047] In one embodiment, the flow control element 19 of each gas supply pipe is adjusted, that is, the air coefficient is adjusted, and the flame of the test burner 12 is observed through the visualization partition 113, so that the flameout boundary can be analyzed.

[0048] In one embodiment, the flame propagation of the fire bar 12 under test is observed through a visualization partition 113.

[0049] In one embodiment, the ignition status of the test burner 12 is observed through a visualization partition 113.

[0050] In one embodiment, the burner testing apparatus includes a vibration assembly; the vibration assembly is used to drive the burner under test 12 to vibrate. When the vibration assembly is working, it drives the burner under test 12 to vibrate. By adjusting the vibration parameters of the vibration assembly (e.g., vibration frequency, vibration acceleration), and observing the flame of the burner under test 12 through the visualization partition 113, the flame state under different vibration conditions can be analyzed, and the seismic resistance boundary can be analyzed. It can be understood that the housing 11 may be disposed on the vibration assembly, and the vibration of the vibration assembly drives the burner under test 12 located inside the housing 11 to vibrate.

[0051] In one embodiment, the flame state is observed visually by the operator; that is, the operator can observe the flame state visually through the visualization partition 113 and analyze the specific defects of the burner's combustion performance based on the flame state, such as the uniformity of gas concentration and flow rate.

[0052] In one embodiment, the burner testing device further includes an image acquisition device. The orthographic projection of the image acquisition port of the image acquisition device onto the housing 11 is located within the opening 112 of the housing 11. The flame image is acquired by the image acquisition device, and the flame state is analyzed by the flame image.

[0053] By precisely aligning the orthographic projection of the image acquisition port (i.e., the lens optical entrance) of the image acquisition device with the area of ​​the opening 112, the image acquisition port of the image acquisition device and the visualization partition 113 set in the opening 112 form an optical path, ensuring that the flame image is captured without obstruction through the visualization partition 113. The captured flame image is clear and without distortion, which helps to improve the accuracy of flame combustion performance analysis, thereby helping to identify specific defects in the combustion performance of the burner.

[0054] In one embodiment, the image acquisition device includes a high-speed camera.

[0055] In one embodiment, the image acquisition device is fixed to the housing 11.

[0056] For example, an image acquisition device is used to acquire flame images and analyze the flame color.

[0057] For example, an image acquisition device is used to acquire images of flames and analyze the flame height.

[0058] For example, multiple flame images of ignition and subsequent ignition are acquired using an image acquisition device, and the flame propagation is analyzed.

[0059] For example, an image of the flame at the moment of ignition can be captured by an image acquisition device, and the ignition state can be analyzed.

[0060] For example, the flow control components 19 of each gas supply pipeline are adjusted, and flame images under different air coefficients are acquired by an image acquisition device to analyze the flameout boundary.

[0061] For example, the vibration parameters of the vibration component are adjusted, and flame images under different vibration parameters are acquired by an image acquisition device to analyze the seismic boundary.

[0062] Continue reading Figure 1 The housing 11 has a smoke outlet pipe 114, which communicates with the receiving cavity 111. Gas produced by combustion of the fuel gas in the flame holes 122 of the burner under test 12 is discharged from the smoke outlet pipe 114 to the outside of the housing 11. In one embodiment, the burner testing device further includes a flue gas detection device, which is installed in the smoke outlet pipe 114 and is used to detect the gas after combustion of the fuel gas, enabling real-time analysis of flue gas emission data. In another embodiment, the burner testing device further includes a flue gas sampling device, which is installed in the smoke outlet pipe 114 and is used to collect the gas after combustion of the fuel gas. The collected flue gas can be detected using a chromatograph or other detection device, enabling higher precision flue gas emission analysis.

[0063] By installing flue gas detection equipment or flue gas sampling equipment in the flue gas outlet duct 114, the flue gas emission data can be analyzed to evaluate the degree of combustion of the gas and whether the back air coefficient setting is reasonable. The defects in the combustion performance of the burner can be confirmed by detecting the flue gas.

[0064] In one embodiment, the burner testing apparatus further includes a temperature sensor fixed to the housing 11, which is used to sense the flame temperature of the burner 12 under test.

[0065] By sensing the flame temperature using a temperature sensor, it can be used to evaluate the completeness of gas combustion, determine the rationality of air coefficient matching, characterize the uniformity of gas concentration and flow rate, and explore the flameout boundary, vibration boundary, etc. through changes in flame temperature.

[0066] In one embodiment, the burner testing device further includes a controller and a display screen. The controller can be connected to one or more of the following: flow control device 19, image acquisition device, vibration component, flue gas detection device, flue gas sampling device, and temperature sensor. The controller is connected to the display screen to realize parameter visualization, real-time monitoring and stable adjustment, reduce human operation error, and improve the accuracy, stability and controllability of test data and test conditions.

[0067] In one embodiment, the controller is connected to the flow control unit 19. The controller controls the flow control unit 19 on each gas supply pipe according to the test command, and the flow control unit 19 on each gas supply pipe transmits the flow information of the corresponding gas supply pipe to the controller. The controller can control this flow information to be displayed on the display screen, realize the real-time control of the flow control unit 19, and realize tests such as the flameout boundary.

[0068] In one embodiment, the image acquisition device is connected to the controller. The controller controls the image acquisition device to acquire flame images according to the test command. The image acquisition device outputs the flame images to the controller. The controller can control these flame images to be displayed on the screen so that the operator can analyze the uniformity of gas concentration, uniformity of gas flow rate, flameout boundary, seismic resistance limit, etc., based on the flame images.

[0069] In one embodiment, the vibration component and the image acquisition device are connected to the controller. The controller controls the vibration parameters of the vibration component according to the test instructions, and controls the image acquisition device to acquire flame images under different vibration parameters. The image acquisition device outputs the flame images to the controller, and the controller can control the flame images to be displayed on the screen so that the operator can analyze the seismic resistance limit, etc., based on the flame images.

[0070] In one embodiment, the controller is connected to a temperature sensor, which transmits the detected flame temperature data to the controller. The controller then displays the temperature data on a screen so that the operator can analyze the combustion situation based on the temperature data.

[0071] In one embodiment, the controller is connected to a flue gas detection device, which transmits the flue gas detection results to the controller. The controller then controls the display of the flue gas detection results on a screen so that the operator can analyze the combustion performance based on the flue gas detection results.

[0072] In one embodiment, each of the first gas supply pipe 14, the second gas supply pipe 15, the third gas supply pipe 16, the fourth gas supply pipe 17, and the fifth gas supply pipe 18 is equipped with a pressure reducing valve, which is located upstream of the flow control element 19. The air supply port provides high-pressure air, which is reduced in pressure by the pressure reducing valve on the supply pipe; for example, the high-pressure air from the air supply port enters the premixer 13 after passing through the pressure reducing valve of the first gas supply pipe 14 and the flow control element 19. The gas supply port provides high-pressure gas, which is reduced in pressure by the pressure reducing valve on the supply pipe; for example, the high-pressure gas from the gas supply port enters the premixer 13 after passing through the pressure reducing valve of the second gas supply pipe 15 and the flow control element 19.

[0073] In one embodiment, the third air supply pipe 16 and the fourth air supply pipe 17 are independent of each other; in other words, for the non-premixed burner test device, the pipe for primary air intake (i.e., the fourth air supply pipe) and the pipe for secondary air intake (i.e., the third air supply pipe) are independent of each other, so as to realize independent air supply for the primary and secondary air of the burner under test 12. The primary air coefficient and secondary air coefficient of the burner under test 12 can be accurately calculated, providing accurate analysis results for the flameout and vibration resistance margin range of the burner under test 12, which is conducive to optimizing the combustion performance of the burner.

[0074] In one embodiment, the housing 11 has one or more mounting portions for mounting the burner 12 to be tested. It is understood that when only one burner 12 is provided within the housing 11, the burner testing device can analyze the combustion performance of a single burner 12, such as the uniformity of gas concentration and gas flow rate along the arrangement direction of the plurality of flame holes 122 of the burner 12, the flameout boundary, and the vibration resistance limit. When multiple burners 12 are provided within the housing 11, the burner testing device can analyze the combustion performance of multiple burners, such as the uniformity of gas concentration and gas flow rate along the arrangement direction of the multiple burners 12, the flameout boundary, and the vibration resistance limit.

[0075] In one implementation, such as Figure 2 As shown, the burner testing device also includes a flame arrester 10, which is positioned between the outlet 133 of the premixer 13 and the inlet 121 of the burner 12 under test. During combustion, the flame arrester 10 effectively suppresses flame backflow, preventing backfire of the burner under test and open flame from entering the second gas supply pipeline 15 (gas pipeline), thus avoiding safety accidents such as pipeline explosion and gas ignition, ensuring stable operation of the testing system, and preventing the testing process from being interrupted by backfire.

[0076] In one implementation, such as Figure 4 As shown, the connecting channel 123 of the test burner 12 has a meandering flow channel a and a turning structure b, which realizes the full mixing of gas and air, gas pressure stabilization and rectification, backfire prevention and safety protection, and uniform distribution of mixed gas, providing a stable and uniform combustible mixture for each flame hole 122 of the test burner 12, effectively ensuring combustion stability and safety.

[0077] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A burner testing device for testing a burner array under test, characterized in that, include: The air supply port is connected to the flame arrester under test through a primary air pipeline and a secondary air pipeline; The gas supply port is connected to the burner under test via a gas pipeline; The air supply port and the gas supply port are also connected to the test burner via a premixer; Flow control components are respectively installed on the primary air pipeline, the secondary air pipeline, the gas pipeline, the connection path between the air supply port and the premixer, and the connection path between the gas supply port and the premixer.

2. The burner testing device according to claim 1, characterized in that, The premixer includes a gas inlet, an air inlet, and an air outlet; The burner testing device also includes: The housing has a receiving cavity for accommodating the burner under test; the burner under test has a burner air inlet; and the air outlet is connected to the burner air inlet. A first air supply pipe, one end of which is connected to an air supply port, and the other end of which is connected to the air inlet. The second gas supply pipe has one end connected to the gas supply port and the other end connected to the gas inlet. The premixer is located on the first gas supply pipe and the second gas supply pipe. The third air supply pipe has one end connected to the air supply port and the other end connected to the accommodating cavity; the third air supply pipe is the secondary air pipeline. The fourth air supply pipe has one end connected to the air supply port and the other end connected to the burner air inlet; the fourth air supply pipe is the primary air pipeline. The fifth gas supply pipeline has one end connected to the gas supply port and the other end connected to the burner inlet; the fifth gas supply pipeline is the gas pipeline.

3. The burner testing device according to claim 2, characterized in that, The housing is provided with an opening, and the opening is provided with a visual partition; The flame hole of the fire pack to be tested is located within the visible area of ​​the opening.

4. The burner testing device according to claim 3, characterized in that, The burner testing device also includes an image acquisition device, wherein the orthographic projection of the image acquisition port of the image acquisition device on the housing is located within the opening.

5. The burner testing apparatus according to claim 2, characterized in that, The housing has a smoke outlet pipe, which is connected to the accommodating cavity; The burner testing device further includes a flue gas detection device, which is installed in the flue gas outlet duct; or, the burner testing device further includes a flue gas sampling device, which is installed in the flue gas outlet duct.

6. The burner testing apparatus according to claim 2, characterized in that, The burner testing device also includes a temperature sensor, which is fixed to the housing and is used to sense the flame temperature of the burner under test.

7. The burner testing apparatus according to claim 2, characterized in that, The burner testing device also includes a vibration component, which is used to drive the test burner to vibrate.

8. The burner testing apparatus according to claim 2, characterized in that, The third gas supply pipeline is independent of the fourth gas supply pipeline.

9. The burner testing apparatus according to claim 1, characterized in that, The air coefficient of the burner testing device is 0.6~2.

2.

10. The burner testing apparatus according to claim 1, characterized in that, The flow control components include a flow meter and a control valve.

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