Monomer combustion test device

Abstract

The utility model discloses a single combustion test device, which solves the technical problems that a gas analyzer on the existing single combustion test equipment is difficult to meet the requirements of measurement accuracy and low cost at the same time, and the change of the combustion state of a material is inconvenient to inquire subsequently as the combustion state of the material is not monitored and recorded. Comprising combustion test equipment, a machine room arranged beside the combustion test equipment, a gas analysis mechanism connected out of the combustion test equipment, and a PLC control cabinet arranged in the machine room. According to the utility model, combustion drippings and flame transverse spreading changes in the monomer combustion process are monitored and recorded in real time, so that the state changes in the material combustion process can be inquired conveniently when subsequent needs exist; the TDLAS technology is introduced into a monomer combustion test for the first time to measure the concentration of oxygen, carbon monoxide and carbon dioxide in flue gas, the measurement result is accurate, and compared with an imported gas analyzer, the cost is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of combustion tests, and in particular relates to a single combustion test device. Background Art

[0002] The single-combustion test is a method for evaluating the combustion performance of a single material or product by simulating an actual fire environment. This test is mainly used to measure key parameters such as the heat release rate, smoke production, and flame propagation speed of the material during combustion, thereby determining its combustion performance level. Existing single-combustion tests in China usually use imported gas analyzers or domestic gas analyzers to measure the oxygen and carbon dioxide content in the flue gas. Although imported gas analyzers can meet the measurement accuracy requirements, their cost is relatively high. Domestic gas analyzers are relatively cheap compared to imported gas analyzers, but their measurement accuracy is lower.

[0003] Existing techniques for conducting single-unit combustion tests measure not only oxygen content but also indicators such as exhaust duct temperature and flue gas carbon dioxide concentration during combustion. However, these techniques fail to monitor and record changes in combustion drippings and the lateral spread of flames during combustion, hindering subsequent monitoring of changes in the combustion state when necessary. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a single combustion test device to solve the technical problems that the gas analyzers used in existing single combustion test equipment are difficult to meet the requirements of measurement accuracy and low cost at the same time, and fail to monitor and record the state of material combustion, making it inconvenient to query the state changes of material combustion when necessary later.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A single combustion test device includes combustion test equipment, a machine room located next to the combustion test equipment, a gas analysis mechanism connected to the combustion test equipment, and a PLC control cabinet located in the machine room; the gas analysis mechanism includes a gas collection pipe connected to the combustion test equipment, a buffer tank connected to the gas collection pipe, and a smoke filter and a first exhaust fan located on the gas collection pipe; the buffer tank is connected to a tunable diode laser absorption spectrometer, and the combustion test equipment, the smoke filter, the first exhaust fan and the tunable diode laser absorption spectrometer are respectively connected to the PLC control cabinet.

[0007] Furthermore, the computer room is also provided with a PC connected to the PLC control cabinet, and a wall-mounted display hung on the wall of the computer room and connected to the PC.

[0008] Furthermore, the combustion test equipment includes a combustion chamber, a test cart arranged in the combustion chamber, an air collecting hood arranged on the top of the combustion chamber, and a smoke exhaust pipe connected to the air collecting hood; a high-speed camera is installed in the combustion chamber, and the high-speed camera is connected to the PLC control cabinet.

[0009] Furthermore, a temperature sensor, a smoke density sensor and a pressure difference sensor are provided in the exhaust pipe, and a second exhaust fan is provided on the exhaust pipe; the temperature sensor, smoke density sensor, pressure difference sensor and the second exhaust fan are respectively connected to the PLC control cabinet.

[0010] Furthermore, it also includes a combustion mechanism, which includes a propane tank located in the machine room, a sandbox burner connected from the propane tank and located on the test cart, and an auxiliary burner connected from the propane tank and located in the combustion chamber.

[0011] Furthermore, a gas main is connected to the propane storage tank, a first gas branch pipe and a second gas branch pipe are connected to the gas main pipe, the first gas branch pipe is connected to the sandbox burner, and the second gas branch pipe is connected to the auxiliary burner.

[0012] Furthermore, a flow controller is provided on the gas main pipe, a first solenoid valve is provided on the first gas branch pipe, and a second solenoid valve is provided on the second gas branch pipe; the sand table burner, auxiliary burner, flow controller, first solenoid valve and second solenoid valve are respectively connected to the PLC control cabinet.

[0013] Furthermore, the test cart is provided with a first electronically controlled igniter adapted to the sand table burner, and the combustion chamber is provided with a second electronically controlled igniter adapted to the auxiliary burner; the first electronically controlled igniter and the second electronically controlled igniter are respectively connected to the PLC control cabinet.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model has a simple structure, a scientific and reasonable design, and is easy to use. The utility model performs real-time detection of flames in a single combustion test for the first time, that is, a high-speed camera monitors the combustion drippings and the lateral spread of the flame in the test process in real time. At the same time, the PLC control cabinet receives and stores the images taken by the high-speed camera in real time, which is conducive to querying the state changes of the material combustion process when necessary later; the utility model introduces spectral absorption technology in a single combustion test for the first time, and uses this technology to measure the concentrations of gases such as oxygen, carbon monoxide, and carbon dioxide in the flue gas generated by combustion in the test process. The measurement results are accurate, and compared with imported gas analyzers, the utility model is relatively cheap and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model.

[0017] Figure 2 Schematic diagram of the exhaust pipe structure.

[0018] Figure 3 This is a cross-sectional view of the machine room.

[0019] Figure 4 Schematic diagram of the combustion mechanism.

[0020] Figure 5 This is a structural block diagram of the connection between the PLC control cabinet and other devices.

[0021] The names corresponding to the reference numerals are:

[0022] 1- Combustion test equipment, 2- Machine room, 3- Gas collection pipe, 4- Dust filter, 6- First exhaust fan, 7- Buffer tank, 8- Tunable diode laser absorption spectrometer, 9- PLC control cabinet, 10- PC, 11- Wall-mounted display, 27- Combustion chamber, 28- Test cart, 29- Gas collection hood, 30- Exhaust pipe, 31- High-speed camera, 32- Temperature sensor, 33- Smoke density sensor, 34- Differential pressure sensor, 35- Second exhaust fan, 36- Propane storage tank, 37- Gas main pipe, 38- First gas branch pipe, 39- Second gas branch pipe, 40- Sand table burner, 41- Auxiliary burner, 42- Flow controller, 43- First solenoid valve, 44- Second solenoid valve, 45- First electronically controlled igniter, 46- Second electronically controlled igniter, 47- Exhaust pump. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described herein are merely a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; of course, they can also refer to mechanical connections or electrical connections; in addition, they can also refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] Example 1

[0027] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0028] The utility model has a simple structure, a scientific and reasonable design, and is easy to use. The utility model performs real-time detection of flames in a single combustion test for the first time, that is, a high-speed camera monitors the combustion drippings and the lateral spread of the flame in the test process in real time. At the same time, the PLC control cabinet receives and stores the images taken by the high-speed camera in real time, which is conducive to querying the state changes of the material combustion process when necessary later; the utility model introduces spectral absorption technology in a single combustion test for the first time, and uses this technology to measure the concentrations of gases such as oxygen, carbon monoxide, and carbon dioxide in the flue gas generated by combustion in the test process. The measurement results are accurate, and compared with imported gas analyzers, the utility model is relatively cheap and has a low cost.

[0029] Example 2

[0030] like Figure 1-5As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0031] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0032] In this second embodiment, a high-speed camera 31 records the changes in the flaming drips and lateral flame spread during the combustion process in real time and transmits the recorded video to a PLC control cabinet 9. The PLC control cabinet 9 stores the received video information and backs it up to a PC 10. The PC 10 transmits the received video information to a wall-mounted display 11 for display, allowing personnel in the machine room to observe the combustion status of the material in real time. The test piece burns in the combustion test apparatus 1, generating smoke that is exhausted through a smoke exhaust pipe 30.

[0033] Gas sampling pipe 3 is used to collect gas from exhaust pipe 30. Under the action of first exhaust fan 6, some of the flue gas in exhaust pipe 30 is transferred from exhaust pipe 30 to gas sampling pipe 3. After being filtered by dust filter 4 in gas sampling pipe 3 to remove dust, the flue gas enters buffer tank 7 for flow rate buffering. From buffer tank 7, the flue gas enters tunable diode laser absorption spectrometer 8 for gas analysis. Tunable diode laser absorption spectroscopy (TDLAS) changes the wavelength of the output light by adjusting the laser's injection current and temperature. When the laser's output light wavelength matches a characteristic absorption line of the gas being measured, the laser energy is absorbed by the gas molecules, resulting in a decrease in light intensity. The principle of gas concentration analysis by tunable diode laser absorption spectrometer 8 is as follows: a laser emits light of a specific wavelength. When the light passes through the gas molecules being measured, the gas molecules absorb the light, resulting in a decrease in light intensity. The concentration of the gas being measured is related to the degree of light intensity reduction. By analyzing the degree of light intensity reduction, the concentration of the gas being measured can be inferred.

[0034] In this embodiment 2, the PLC control cabinet 9 controls the operating status of the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8, specifically: the PLC control cabinet 9 controls the operation of the combustion test equipment 1 to make the material in the combustion test equipment 1 burn; controls the operation of the first exhaust fan 6 and adjusts the operating parameters of the first exhaust fan 6 to make the speed of the first exhaust fan 6 extracting gas appropriate, thereby adjusting the smoke collection speed in the gas collection pipe 3; controls the operation of the smoke filter 4 to make the smoke filter 4 filter the smoke collected in the gas collection pipe 3 to filter out smoke in the smoke; controls the operation of the tunable diode laser absorption spectrometer 8, and adjusts the output light wavelength of the laser in the tunable diode laser absorption spectrometer 8 by adjusting the current and temperature of the input laser to detect the concentration of oxygen, carbon dioxide or carbon monoxide in the collected gas respectively.

[0035] The PLC control cabinet 9 also acquires and stores data generated during the operation of the combustion test equipment 1 and the tunable diode laser absorption spectrometer 8. The combustion test equipment 1 transmits data such as the smoke density and exhaust pipe temperature to the PLC control cabinet 9, which analyzes and stores this data. The tunable diode laser absorption spectrometer 8 measures gas concentration and transmits the measured data to the PLC control cabinet 9, which also analyzes and stores this data.

[0036] The PC 10 is connected to the PLC control cabinet 9, and a communication connection is established between the PC 10 and the PLC control cabinet 9. Personnel can view the data generated by the PLC control cabinet 9 during the operation of the combustion test equipment 1 and the tunable diode laser absorption spectrometer 8 by performing corresponding operations on the PC 10, or perform corresponding operations on the PC 10 to manually control the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8.

[0037] Example 3

[0038] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0039] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0040] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0041] In this third embodiment, the test material is securely placed on a test cart 28. After being pushed into the combustion chamber 27, the test material burns on the cart 28, which serves as a combustion platform. Smoke generated during the combustion process is collected by a gas hood 29 and then discharged through a smoke exhaust pipe 30. During the combustion process, a high-speed camera 31 captures the process in real time and transmits the captured video to a PLC control cabinet 9. The PLC control cabinet 9 backs up the video information to a PC 10, which then transmits the video information to a wall-mounted display for display.

[0042] Example 4

[0043] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0044] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0045] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0046] A temperature sensor 32 , a smoke density sensor 33 and a pressure difference sensor 34 are provided in the smoke exhaust pipe 30 , and a second exhaust fan 35 is provided on the smoke exhaust pipe 30 ; the temperature sensor 32 , the smoke density sensor 33 , the pressure difference sensor 34 and the second exhaust fan 35 are respectively connected to the PLC control cabinet 9 .

[0047] In this fourth embodiment, the second exhaust fan 35 is used to draw smoke generated within the combustion chamber into the exhaust pipe 30 for easy exhaust through the exhaust pipe 30. A temperature sensor 32, a smoke density sensor 33, and a differential pressure sensor 34 within the exhaust pipe 30 are used to detect changes in the temperature, smoke density, and smoke pressure within the exhaust pipe 30, respectively. The temperature sensor 32, smoke density sensor 33, differential pressure sensor 34, and the second exhaust fan 35 transmit the detected data to the PLC control cabinet 9, which stores the received information.

[0048] Example 5

[0049] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0050] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0051] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0052] It also includes a combustion mechanism, which includes a propane tank 36 located in the machine room 2, a sand table burner 40 connected from the propane tank 36 and located on the test cart 28, and an auxiliary burner 41 connected from the propane tank 36 and located in the combustion chamber 27.

[0053] Example 6

[0054] like Figure 1-5As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0055] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0056] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0057] It also includes a combustion mechanism, which includes a propane tank 36 located in the machine room 2, a sand table burner 40 connected from the propane tank 36 and located on the test cart 28, and an auxiliary burner 41 connected from the propane tank 36 and located in the combustion chamber 27.

[0058] A gas main pipe 37 is connected to the propane storage tank 36 , and a first gas branch pipe 38 and a second gas branch pipe 39 are connected to the gas main pipe 37 . The first gas branch pipe 38 is connected to the sandbox burner 40 , and the second gas branch pipe is connected to the auxiliary burner 41 .

[0059] Example 7

[0060] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0061] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0062] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0063] It also includes a combustion mechanism, which includes a propane tank 36 located in the machine room 2, a sand table burner 40 connected from the propane tank 36 and located on the test cart 28, and an auxiliary burner 41 connected from the propane tank 36 and located in the combustion chamber 27.

[0064] A gas main pipe 37 is connected to the propane storage tank 36 , and a first gas branch pipe 38 and a second gas branch pipe 39 are connected to the gas main pipe 37 . The first gas branch pipe 38 is connected to the sandbox burner 40 , and the second gas branch pipe is connected to the auxiliary burner 41 .

[0065] A flow controller 42 is provided on the gas supply main pipe 37, a first solenoid valve 43 is provided on the first gas supply branch pipe 38, and a second solenoid valve 44 is provided on the second gas supply branch pipe 39; the sand table burner 40, the auxiliary burner 41, the flow controller 42, the first solenoid valve 43 and the second solenoid valve 44 are respectively connected to the PLC control cabinet 9.

[0066] In this embodiment 7, an air extraction pump 47 is provided on the gas main 37, and the air extraction pump 47 is connected to a PLC control cabinet 9. The PLC control cabinet 9 controls the operating states of the air extraction pump 47, the sand table burner 40, the auxiliary burner 41, the flow controller 42, the first solenoid valve 43, and the second solenoid valve 44. Specifically, the PLC control cabinet 9 controls the start and stop of the air extraction pump 47, controls the output or extinguishment of the sand table burner 40 or the auxiliary burner 41, controls the flow controller 42 to switch the delivery channel and adjust the flow rate of propane delivered from the gas main 37, and controls the opening and closing of the first solenoid valve 43 and the second solenoid valve 44.

[0067] After the vacuum pump 47 is activated, it pumps propane from the propane storage tank 36 into the gas main 37. After the propane in the gas main 37 is regulated by the flow controller 42, it is then fed into the first gas branch 38 or the second gas branch 39. The first gas branch 38 delivers the propane to the sandbox burner 40, while the second gas branch 39 delivers the propane to the auxiliary burner 41. The first solenoid valve 43 is used to open and close the first gas branch 38, thereby opening or closing the passage within the first gas branch 38. The second solenoid valve 44 is used to open and close the second gas branch 39, thereby opening or closing the passage within the second gas branch 39.

[0068] The flow controller 42 is used to switch the propane delivered from the gas main pipe 37 to the first gas branch pipe 38 or the second gas branch pipe 39 and control the flow of the propane input into the first gas branch pipe 38 or the second gas branch pipe 39.

[0069] Example 8

[0070] like Figure 1-5 As shown, the utility model provides a single combustion test device, including a combustion test equipment 1, a machine room 2 located next to the combustion test equipment 1, a gas analysis mechanism connected to the combustion test equipment 1, and a PLC control cabinet 9 located in the machine room 2; the gas analysis mechanism includes a gas collection pipe 3 connected from the combustion test equipment 1, a buffer tank 7 connected from the gas collection pipe 3, and a smoke filter 4 and a first exhaust fan 6 located on the gas collection pipe 3; the buffer tank 7 is connected to a tunable diode laser absorption spectrometer 8, and the combustion test equipment 1, the smoke filter 4, the first exhaust fan 6 and the tunable diode laser absorption spectrometer 8 are respectively connected to the PLC control cabinet 9.

[0071] The computer room 2 is also provided with a PC 10 connected to the PLC control cabinet 9 , and a wall-mounted display 11 hung on the wall of the computer room 2 and connected to the PC 10 .

[0072] The combustion test equipment 1 includes a combustion chamber 27, a test cart 28 arranged in the combustion chamber 27, an air collecting hood 29 arranged on the top of the combustion chamber 27, and a smoke exhaust pipe 30 connected to the air collecting hood 29; a high-speed camera 31 is provided in the combustion chamber 27, and the high-speed camera 31 is connected to the PLC control cabinet 9.

[0073] It also includes a combustion mechanism, which includes a propane tank 36 located in the machine room 2, a sand table burner 40 connected from the propane tank 36 and located on the test cart 28, and an auxiliary burner 41 connected from the propane tank 36 and located in the combustion chamber 27.

[0074] A first electronically controlled igniter 45 adapted to the sand table burner 40 is provided on the test cart 28, and a second electronically controlled igniter 46 adapted to the auxiliary burner 41 is provided in the combustion chamber 27; the first electronically controlled igniter 45 and the second electronically controlled igniter 46 are respectively connected to the PLC control cabinet 9.

[0075] In this eighth embodiment, after the first gas branch pipe 38 delivers propane to the sand tray burner 40, the first electronically controlled igniter 45 ignites the propane, causing the sand tray burner 40 to produce a flame. After the second gas branch pipe 39 delivers propane to the auxiliary burner 41, the second electronically controlled igniter 46 ignites the propane, causing the auxiliary burner 41 to produce a flame.

[0076] The model of PLC control cabinet 9 is Siemens S7-1200.

[0077] The smoke filter 4, the first exhaust fan 6, the tunable diode laser absorption spectrometer 8, the PLC control cabinet 9, the PC 10, the wall-mounted display 11, the high-speed camera 31, the temperature sensor 32, the smoke density sensor 33, the pressure difference sensor 34, the second exhaust fan 35, the sand table burner 40, the auxiliary burner 41, the flow controller 42, the first solenoid valve 43, the second solenoid valve 44, the first electronically controlled igniter 45, the second electronically controlled igniter 46 and the exhaust pump 47 used in the present invention are all existing known electrical equipment and can be directly purchased and used on the market. The smoke filter 4, the first exhaust fan 6, the tunable diode laser absorption spectrometer 8, the PLC control cabinet 9, the PC 10, the wall-mounted display 11, the high-speed camera 31, the temperature sensor 32, the smoke density sensor 33, the pressure difference sensor 34, The structures, circuits, and control principles of the second exhaust fan 35, the sand table burner 40, the auxiliary burner 41, the flow controller 42, the first solenoid valve 43, the second solenoid valve 44, the first electronically controlled igniter 45, the second electronically controlled igniter 46 and the exhaust pump 47 are all existing known technologies. Therefore, the structures, circuits, and control principles of the smoke filter 4, the first exhaust fan 6, the tunable diode laser absorption spectrometer 8, the PLC control cabinet 9, the PC 10, the wall-mounted display 11, the high-speed camera 31, the temperature sensor 32, the smoke density sensor 33, the pressure difference sensor 34, the second exhaust fan 35, the sand table burner 40, the auxiliary burner 41, the flow controller 42, the first solenoid valve 43, the second solenoid valve 44, the first electronically controlled igniter 45, the second electronically controlled igniter 46 and the exhaust pump 47 are not further described here.

[0078] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are intended to illustrate the technical solutions of the present invention, rather than to limit them, and certainly not to limit the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or embellishments made to the main design concept and spirit of the present invention that have no substantive significance, provided that the technical problems they solve are still consistent with those of the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields should also be included in the patent protection scope of the present invention.

Claims

1. A single combustion test device, characterized in that: The invention comprises a combustion test device (1), a machine room (2) located next to the combustion test device (1), a gas analysis mechanism connected to the combustion test device (1), and a PLC control cabinet (9) located in the machine room (2); the gas analysis mechanism comprises a gas sampling pipe (3) connected to the combustion test device (1), a buffer tank (7) connected to the gas sampling pipe (3), and a smoke filter (4) and a first exhaust fan (6) located on the gas sampling pipe (3); the buffer tank (7) is connected to a tunable diode laser absorption spectrometer (8), and the combustion test device (1), the smoke filter (4), the first exhaust fan (6) and the tunable diode laser absorption spectrometer (8) are respectively connected to the PLC control cabinet (9); The computer room (2) is also provided with a PC (10) connected to the PLC control cabinet (9), and a wall-mounted display (11) hung on the wall of the computer room (2) and connected to the PC (10); The combustion test equipment (1) includes a combustion chamber (27), a test cart (28) arranged in the combustion chamber (27), a gas collecting hood (29) arranged on the top of the combustion chamber (27), and a smoke exhaust pipe (30) connected to the gas collecting hood (29); a high-speed camera (31) is arranged in the combustion chamber (27), and the high-speed camera (31) is connected to a PLC control cabinet (9).

2. A single combustion test device according to claim 1, characterized in that: A temperature sensor (32), a smoke density sensor (33), and a pressure difference sensor (34) are provided in the smoke exhaust pipe (30), and a second exhaust fan (35) is provided on the smoke exhaust pipe (30); the temperature sensor (32), the smoke density sensor (33), the pressure difference sensor (34), and the second exhaust fan (35) are respectively connected to the PLC control cabinet (9).

3. A single combustion test device according to claim 1, characterized in that: The invention also includes a combustion mechanism, which includes a propane tank (36) located in the machine room (2), a sand table burner (40) connected from the propane tank (36) and located on the test cart (28), and an auxiliary burner (41) connected from the propane tank (36) and located in the combustion chamber (27).

4. A single combustion test device according to claim 3, characterized in that: The propane storage tank (36) is connected to a gas main pipe (37), and the gas main pipe (37) is connected to a first gas branch pipe (38) and a second gas branch pipe (39). The first gas branch pipe (38) is connected to a sandbox burner (40), and the second gas branch pipe (39) is connected to an auxiliary burner (41).

5. A single combustion test device according to claim 4, characterized in that: A flow controller (42) is provided on the gas transmission main pipe (37), a first solenoid valve (43) is provided on the first gas transmission branch pipe (38), and a second solenoid valve (44) is provided on the second gas transmission branch pipe (39); the sand table burner (40), the auxiliary burner (41), the flow controller (42), the first solenoid valve (43), and the second solenoid valve (44) are respectively connected to the PLC control cabinet (9).

6. A single combustion test device according to claim 3, characterized in that: A first electronically controlled igniter (45) adapted to the sand table burner (40) is provided on the test cart (28), and a second electronically controlled igniter (46) adapted to the auxiliary burner (41) is provided in the combustion chamber (27); the first electronically controlled igniter (45) and the second electronically controlled igniter (46) are respectively connected to the PLC control cabinet (9).

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