Liquid continuous combustion tester

Abstract

The utility model provides a kind of liquid sustained combustion test instrument, including rack, combustion test box, combustion and fire extinguishing two-in-one nozzle, liquid sample box and be used for driving combustion and fire extinguishing two-in-one nozzle lifting lifting assembly, combustion test box is fixedly installed in rack top, combustion and fire extinguishing two-in-one nozzle and liquid sample box are all located inside combustion test box, and the output end of combustion and fire extinguishing two-in-one nozzle is opposite liquid sample box top, lifting assembly is fixedly installed in combustion test box inner side wall, and the output end of lifting assembly is fixedly connected with the outer surface of combustion and fire extinguishing two-in-one nozzle, the utility model is cooperated by ignition ring and fire spraying cavity, simulates the combustion process of liquid fuel under specific condition, then utilizes the synergistic effect of fire extinguishing ring and fire extinguishing cavity, assesses the inhibition effect of fire extinguishing medium to combustion, multiple fire spraying cavities are synchronously ignited, cover sample box full area, reduce local combustion deviation, multiple fire extinguishing cavities are synchronously sprayed, cover combustion area, improve fire extinguishing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of liquid combustion testing equipment, and more particularly to a liquid continuous combustion test instrument. Background Technology

[0002] The liquid sustained combustion test is an important test to determine whether a substance will continue to burn when heated and exposed to a flame under test conditions. The liquid sustained combustion test apparatus is the testing equipment used to perform this test. A metal block with a recess (sample tank) is heated to a specified temperature, a specified amount of the test substance is placed in the test tank, a standard flame is applied under specified conditions, and then immediately removed. The test substance is then observed to see if it maintains stable combustion.

[0003] Traditional liquid combustion testing equipment typically adopts a split design, meaning that the ignition system and the extinguishing system are independent modules that need to be installed and coordinated. This split design results in insufficient coordination between ignition and extinguishing actions, making it difficult for the extinguishing medium to intervene quickly in the early stages of combustion, which affects the accuracy of the test data. In addition, the ignition and extinguishing equipment require separate spaces, which limits the compactness and modularity of the testing instrument.

[0004] Therefore, it is necessary to provide a new liquid continuous combustion test apparatus to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a liquid continuous combustion test instrument.

[0006] The liquid continuous combustion test apparatus provided by this utility model includes a frame, a combustion test chamber, a combustion extinguishing nozzle, a liquid sample box, and a lifting assembly for driving the combustion extinguishing nozzle to rise and fall. The combustion test chamber is fixedly installed on the top of the frame. The combustion extinguishing nozzle and the liquid sample box are both located inside the combustion test chamber, and the output end of the combustion extinguishing nozzle faces the liquid sample box. The lifting assembly is fixedly installed on the inner side wall of the combustion test chamber, and the output end of the lifting assembly is fixedly connected to the outer surface of the combustion extinguishing nozzle. The combined combustion and fire extinguishing nozzle has multiple independent and spaced-apart spray chambers and fire extinguishing chambers. The multiple spray chambers are connected to the spraying equipment, and the multiple fire extinguishing chambers are connected to the fire extinguishing equipment. Each of the spray chambers and fire extinguishing chambers has multiple through holes at its bottom.

[0007] Furthermore, it also includes a liquid sample loading assembly, which includes a storage tank for storing the liquid sample to be burned, a sliding mechanism, and a sample loading head. The first gas tank is fixedly installed on the frame, and the output end of the first gas tank is fixedly connected to the sample loading head through a connecting pipe. The sample loading head is also provided with a valve. The sliding mechanism is fixedly installed inside the combustion test chamber, and the sample loading head is fixedly installed at the output end of the sliding mechanism.

[0008] Furthermore, the liquid sample box is provided with rotating rods on both sides, and the two rotating rods are respectively rotatably installed on both sides of the combustion test chamber. One end of one of the rotating rods passes through the combustion test chamber and is fixedly connected to a rotary motor. A base plate is fixedly installed at the bottom of the rotary motor, and the base plate is fixedly installed on the outer wall of the combustion test chamber.

[0009] Furthermore, the combustion test chamber is also equipped with a filter screen located below the liquid sample box, and a liquid collection box is slidably installed at the bottom of the filter screen.

[0010] Furthermore, the flame-throwing device includes a gas tank for storing flammable gas and an ignition ring. The output end of the gas tank is connected to a gas supply pipe, and the other end of the gas supply pipe is connected to the inner cavity of the ignition ring. Multiple ignition tubes are circumferentially and equidistantly connected to the bottom of the ignition ring. The multiple ignition tubes are respectively connected to multiple flame-throwing chambers. An arc igniter is also provided on the outer side of the ignition ring.

[0011] Furthermore, the fire extinguishing device includes a storage tank for storing fire extinguishing medium and a fire extinguishing ring. The output end of the storage tank is connected to a supply pipe, and the other end of the supply pipe is connected to the inner cavity of the fire extinguishing ring. The bottom of the fire extinguishing ring is connected to multiple fire extinguishing pipes at equal intervals in a circumferential direction, and the multiple fire extinguishing pipes are respectively connected to multiple fire extinguishing chambers.

[0012] Furthermore, the sliding mechanism includes a fixed slide rail, a lead screw, a drive motor, and a slider. The fixed slide rail is fixedly installed on the bottom wall of the combustion test chamber. The drive motor is fixedly installed on one end of the fixed slide rail. The output end of the drive motor is fixedly connected to one end of the lead screw. The other end of the lead screw is rotatably connected to the fixed slide rail. The slider is threadedly connected to the lead screw and is slidably installed on the top of the fixed slide rail. The top of the slider is fixedly connected to the sample dispensing head.

[0013] Furthermore, the lifting assembly includes a second fixed slide rail, a second lead screw, a second drive motor, and a second slider. The second fixed slide rail is fixedly installed on the inner side wall of the combustion test chamber. The second drive motor is fixedly installed on one end of the second fixed slide rail. The output end of the second drive motor is fixedly connected to one end of the second lead screw. The other end of the second lead screw is rotatably connected to the second fixed slide rail. The second slider is threadedly connected to the second lead screw and is slidably installed on one side of the second fixed slide rail. A connecting block is fixedly connected to one side of the second slider, and the connecting block is fixedly connected to the outer side wall of the combined combustion and fire extinguishing nozzle.

[0014] Furthermore, both the gas supply pipe and the outer surface of the supply pipe are provided with check valves.

[0015] Furthermore, an air supply pump is connected to one side of both the liquid storage tank and the storage tank.

[0016] Compared with related technologies, the liquid continuous combustion test apparatus provided by this utility model has the following beneficial effects: 1. This utility model simulates the combustion process of liquid fuel under specific conditions by combining the ignition ring and the flame chamber. Then, it evaluates the suppression effect of the extinguishing medium on combustion by utilizing the synergistic effect of the extinguishing ring and the extinguishing chamber. Multiple flame chambers are ignited simultaneously to cover the entire area of ​​the sample box, reducing local combustion deviation. Multiple extinguishing chambers spray simultaneously to cover the combustion area, improving extinguishing efficiency. The extinguishing and ignition are concentrated in the same component, reducing the proportion occupied.

[0017] 2. This utility model solves the technical bottlenecks of poor combustion uniformity, low fire extinguishing verification efficiency, and high dependence on manual labor in traditional tests by using multiple flame chambers for ignition, multiple fire extinguishing chambers for coordination, and automated sliding and lifting.

[0018] 3. In this invention, the rotary motor drives the liquid sample box to rotate via a rotating rod, which can simulate combustion behavior at different tilt angles and facilitate the disposal of combustion residues after the experiment. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the liquid continuous combustion test apparatus provided by this utility model; Figure 2 This is a schematic diagram of the internal structure of the combustion test chamber provided by this utility model; Figure 3 A schematic diagram of the overall structure of the combustion and fire extinguishing combined nozzle provided by this utility model; Figure 4 A schematic diagram showing the disassembled structure of the combustion and fire extinguishing combined nozzle provided by this utility model; Figure 5A schematic diagram of the structure of the flame-throwing device and fire-extinguishing device provided by this utility model; Figure 6 A schematic diagram of the sample feeding assembly provided by this utility model; Figure 7 A schematic diagram of the lifting assembly provided by this utility model; Figure 8 This is a schematic diagram of the liquid sample box provided by this utility model.

[0020] The diagram is labeled as follows: 1. Frame; 2. Combustion test chamber; 3. Combustion and extinguishing combined nozzle; 4. Liquid sample box; 5. Spray chamber; 6. Extinguishing chamber; 7. Through hole; 8. Storage tank; 9. Sample dispensing head; 10. Valve; 11. Rotating rod; 12. Rotary motor; 13. Base plate; 14. Filter screen; 15. Liquid collection box; 16. Gas tank; 17. Ignition ring; 18. Gas supply pipe; 19. Ignition tube; 20. Arc igniter; 21. Storage tank; 22. Extinguishing ring; 23. Supply pipe; 24. Extinguishing tube; 25. Slide rail one; 26. Lead screw one; 27. Drive motor one; 28. Slider one; 29. ​​Fixed slide rail two; 30. Lead screw two; 31. Drive motor two; 32. Slider two; 33. Connecting block; 34. Check valve; 35. Gas supply pump; 36. Connecting pipe. Detailed Implementation

[0021] To gain a more detailed understanding of the features and technical content of the embodiments disclosed herein, please refer to the following references. Figures 1-8 ,in, Figure 1 A schematic diagram of the overall structure of the liquid continuous combustion test apparatus provided by this utility model; Figure 2 This is a schematic diagram of the internal structure of the combustion test chamber provided by this utility model; Figure 3 A schematic diagram of the overall structure of the combustion and fire extinguishing combined nozzle provided by this utility model; Figure 4 A schematic diagram showing the disassembled structure of the combustion and fire extinguishing combined nozzle provided by this utility model; Figure 5 A schematic diagram of the structure of the flame-throwing device and fire-extinguishing device provided by this utility model; Figure 6 A schematic diagram of the sample feeding assembly provided by this utility model; Figure 7 A schematic diagram of the lifting assembly provided by this utility model; Figure 8 This is a schematic diagram of the liquid sample box provided by this utility model, which illustrates the implementation of the embodiments of this disclosure in detail. The accompanying drawings are for reference only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Example 1:

[0024] In the specific implementation process, such as Figures 1-7 As shown, the liquid continuous combustion tester includes a frame 1, a combustion test chamber 2, a combustion extinguishing nozzle 3, a liquid sample box 4, and a lifting assembly for raising and lowering the combustion extinguishing nozzle 3. The combustion test chamber 2 is fixedly installed on the top of the frame 1. The combustion extinguishing nozzle 3 and the liquid sample box 4 are both located inside the combustion test chamber 2, and the output end of the combustion extinguishing nozzle 3 faces the liquid sample box 4. The lifting assembly is fixedly installed on the inner wall of the combustion test chamber 2, and the output end of the lifting assembly is fixedly connected to the outer surface of the combustion extinguishing nozzle 3. The combustion and fire extinguishing combined nozzle 3 has multiple independent and spaced-apart spray chambers 5 and fire extinguishing chambers 6. The multiple spray chambers 5 are connected to the spraying equipment, and the multiple fire extinguishing chambers 6 are connected to the fire extinguishing equipment. Each spray chamber 5 and fire extinguishing chamber 6 has multiple through holes 7 at its bottom.

[0025] It is worth noting that the flame-spraying device includes a gas tank 16 for storing flammable gas and an ignition ring 17. The output end of the gas tank 16 is connected to a gas supply pipe 18, and the other end of the gas supply pipe 18 is connected to the inner cavity of the ignition ring 17. The bottom of the ignition ring 17 is connected to multiple ignition tubes 19 at equal intervals in a circumferential direction. The multiple ignition tubes 19 are connected to multiple flame-spraying chambers 5 respectively. An arc igniter 20 is also provided on the outside of the ignition ring 17. The arc igniter 20 ignites the gas in the ignition tubes 19, and the flame is sprayed onto the sample box through the through hole 7 at the bottom of the flame-spraying chamber 5.

[0026] It is worth noting that the fire extinguishing equipment includes a storage tank 21 for storing extinguishing media and a fire extinguishing ring 22. The output end of the storage tank 21 is connected to a supply pipe 23, and the other end of the supply pipe 23 is connected to the inner cavity of the fire extinguishing ring 22. The bottom of the fire extinguishing ring 22 is connected to multiple fire extinguishing pipes 24 at equal intervals in a circumferential direction. The multiple fire extinguishing pipes 24 are connected to multiple fire extinguishing chambers 6 respectively. The extinguishing media (such as dry powder, foam, water) in the storage tank 21 enters the fire extinguishing ring 22 through the air supply pump 35 and the supply pipe 23, and is sprayed to the burning area through the through hole 7 at the bottom of the fire extinguishing chamber 6. Optionally, when the extinguishing medium is water, the extinguishing medium can be used not only to extinguish the burning liquid inside the liquid sample box 4, but also to clean the liquid sample box 4.

[0027] It should be noted that the outer surfaces of the gas supply pipe 18 and the supply pipe 23 are equipped with check valves 34. The check valves 34 on the gas supply pipe 18 and the supply pipe 23 prevent gas or liquid backflow and avoid equipment damage. The liquid storage tank 8 and the storage tank 21 are both connected to a gas supply pump 35.

[0028] It is worth noting that, for reference Figure 7 As shown, the lifting assembly includes a fixed slide rail 29, a lead screw 30, a drive motor 31, and a slider 32. The fixed slide rail 29 is fixedly installed on the inner wall of the combustion test chamber 2. The drive motor 31 is fixedly installed on one end of the fixed slide rail 29. The output end of the drive motor 31 is fixedly connected to one end of the lead screw 30, and the other end of the lead screw 30 is rotatably connected to the fixed slide rail 29. The slider 32 is threadedly connected to the lead screw 30 and is slidably installed on the fixed slide rail 29. On one side of track 29 and on one side of slider 22, a connecting block 33 is fixedly connected. The connecting block 33 is fixedly connected to the outer wall of the combustion and fire extinguishing nozzle 3. The drive motor 21 drives slider 22 to rise along the fixed slide rail 29 through lead screw 20, which drives the combustion and fire extinguishing nozzle 3 to fall directly above the sample box. The flammable gas in the gas tank 16 enters the ignition ring 17 through the gas supply pipe 18. In addition, after burning the sample liquid, the combustion and fire extinguishing nozzle 3 can be raised and lowered when extinguishing the fire. In this embodiment, the lifting component can also adjust the height of the fire extinguishing operation, thereby changing the fire extinguishing range and the concentrated fire extinguishing area. Example 2:

[0029] In a specific implementation process, refer to Figure 6 As shown, the liquid continuous combustion test apparatus also includes a liquid sample feeding assembly, which includes a storage tank 8 for storing the liquid sample to be burned, a sliding mechanism, and a sample feeding head 9. A gas tank 16 is fixedly installed on the frame 1. The output end of the gas tank 16 is fixedly connected to the sample feeding head 9 through a connecting pipe 36. The sample feeding head 9 is also equipped with a valve 10. The sliding mechanism is fixedly installed inside the combustion test chamber 2, and the sample feeding head 9 is fixedly installed at the output end of the sliding mechanism. It is worth noting that the sliding mechanism includes a fixed slide rail 25, a lead screw 26, a drive motor 27, and a slider 28. The fixed slide rail 25 is fixedly installed on the bottom wall of the combustion test chamber 2. The drive motor 27 is fixedly installed on one end of the fixed slide rail 25. The output end of the drive motor 27 is fixedly connected to one end of the lead screw 26. The other end of the lead screw 26 is rotatably connected to the fixed slide rail 25. The slider 28 is threadedly connected to the lead screw 26 and is slidably installed on the top of the fixed slide rail 25. The top of the slider 28 is fixedly connected to the sample dispensing head 9. The drive motor 27 drives the slider 28 to slide along the fixed slide rail 25 through the lead screw 26, so that the sample dispensing head 9 moves directly above the liquid sample box 4. The liquid in the storage tank 8 is transported to the sample dispensing head 9 through the connecting pipe 36. After the valve 10 is opened, the liquid is precisely injected into the liquid sample box 4. Example 3:

[0030] In a specific implementation process, refer to Figure 8 As shown, the liquid sample box 4 is provided with rotating rods 11 on both sides. The two rotating rods 11 are respectively rotatably installed on both sides of the combustion test chamber 2, and one end of one of the rotating rods 11 passes through the combustion test chamber 2 and is fixedly connected to a rotary motor 12. A base plate 13 is fixedly installed at the bottom of the rotary motor 12 and is fixedly installed on the outer wall of the combustion test chamber 2. The rotary motor 12 drives the liquid sample box 4 to rotate through the rotating rods 11 to simulate the combustion behavior under different tilt angles and to facilitate the dumping of the combustion residue after the experiment.

[0031] It is worth noting that the combustion test chamber 2 is also equipped with a filter screen 14, which is located below the liquid sample box 4. A liquid collection box 15 is slidably installed at the bottom of the filter screen 14. The combustion residue enters the liquid collection box 15 after being filtered by the filter screen 14, which facilitates subsequent analysis.

[0032] The working principle of this utility model is as follows: When the combustion tester is in use, the drive motor 27 drives the slider 28 to slide along the fixed slide rail 25 via the lead screw 26, so that the sample head 9 moves to the top of the liquid sample box 4. The liquid in the storage tank 8 is transported to the sample head 9 through the connecting pipe 36. After the valve 10 is opened, the liquid is accurately injected into the liquid sample box 4, or the liquid is placed directly inside the liquid sample box 4. The drive motor 31 drives the slider 32 to rise along the fixed slide rail 29 via the lead screw 30, so that the combustion and extinguishing combined nozzle 3 falls to the top of the sample box. The flammable gas in the gas tank 16 enters the ignition ring 17 through the gas supply pipe 18. Arc igniter 20 ignites the gas in ignition tube 19. The flame is sprayed through the through hole 7 at the bottom of the flame chamber 5 onto the sample box to ignite the sample liquid. After the sample liquid is burned, the combustion and extinguishing nozzle 3 can be raised and lowered when the fire is extinguished. Rotary motor 12 drives the liquid sample box 4 to rotate through rotating rod 11 to simulate combustion behavior at different tilt angles. The extinguishing medium (such as dry powder, foam, water) in storage tank 21 enters the extinguishing ring 22 through air supply pump 35 and supply pipe 23, and is sprayed into the combustion area through the through hole 7 at the bottom of extinguishing chamber 6. The combustion residue after the experiment is poured out and filtered through filter screen 14 into collection box 15 for subsequent analysis.

[0033] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid continuous combustion test apparatus, characterized in that, The device includes a frame (1), a combustion test chamber (2), a combustion extinguishing nozzle (3), a liquid sample box (4), and a lifting assembly for raising and lowering the combustion extinguishing nozzle (3). The combustion test chamber (2) is fixedly installed on the top of the frame (1). The combustion extinguishing nozzle (3) and the liquid sample box (4) are both located inside the combustion test chamber (2), and the output end of the combustion extinguishing nozzle (3) faces the liquid sample box (4) above. The lifting assembly is fixedly installed on the inner side wall of the combustion test chamber (2), and the output end of the lifting assembly is fixedly connected to the outer surface of the combustion extinguishing nozzle (3). The combustion and fire extinguishing combined nozzle (3) has multiple independent and spaced-apart fire-spraying chambers (5) and fire-extinguishing chambers (6). The multiple fire-spraying chambers (5) are connected to the fire-spraying equipment, and the multiple fire-extinguishing chambers (6) are connected to the fire-extinguishing equipment. Each of the fire-spraying chambers (5) and fire-extinguishing chambers (6) has multiple through holes (7) at its bottom.

2. The liquid continuous combustion test apparatus according to claim 1, characterized in that, It also includes a liquid sample loading assembly, which includes a storage tank (8) for storing the liquid sample to be burned, a sliding mechanism, and a sample loading head (9). A gas tank (16) is fixedly installed on the frame (1). The output end of the gas tank (16) is fixedly connected to the sample loading head (9) through a connecting pipe (36). The sample loading head (9) is also provided with a valve (10). The sliding mechanism is fixedly installed inside the combustion test chamber (2), and the sample loading head (9) is fixedly installed at the output end of the sliding mechanism.

3. The liquid continuous combustion test apparatus according to claim 2, characterized in that, The liquid sample box (4) is provided with rotating rods (11) on both sides. The two rotating rods (11) are respectively rotatably installed on both sides of the combustion test chamber (2). One end of one of the rotating rods (11) passes through the combustion test chamber (2) and is fixedly connected to a rotary motor (12). A base plate (13) is fixedly installed at the bottom of the rotary motor (12). The base plate (13) is fixedly installed on the outer wall of the combustion test chamber (2).

4. The liquid continuous combustion test apparatus according to claim 3, characterized in that, The combustion test chamber (2) is also equipped with a filter screen (14), which is located below the liquid sample box (4). A liquid collection box (15) is slidably installed at the bottom of the filter screen (14).

5. The liquid continuous combustion test apparatus according to claim 4, characterized in that, The flame-spraying device includes a gas tank (16) for storing flammable gas and an ignition ring (17). The output end of the gas tank (16) is connected to a gas supply pipe (18), and the other end of the gas supply pipe (18) is connected to the inner cavity of the ignition ring (17). The bottom of the ignition ring (17) is connected to multiple ignition tubes (19) at equal intervals in a circumferential direction. The multiple ignition tubes (19) are respectively connected to multiple flame-spraying chambers (5). An arc igniter (20) is also provided on the outside of the ignition ring (17).

6. The liquid continuous combustion test apparatus according to claim 5, characterized in that, The fire extinguishing equipment includes a storage tank (21) for storing fire extinguishing medium and a fire extinguishing ring (22). The output end of the storage tank (21) is connected to a supply pipe (23). The other end of the supply pipe (23) is connected to the inner cavity of the fire extinguishing ring (22). The bottom of the fire extinguishing ring (22) is connected to multiple fire extinguishing pipes (24) at equal intervals in a circumferential direction. The multiple fire extinguishing pipes (24) are respectively connected to multiple fire extinguishing chambers (6).

7. The liquid continuous combustion test apparatus according to claim 6, characterized in that, The sliding mechanism includes a fixed slide rail (25), a lead screw (26), a drive motor (27), and a slider (28). The fixed slide rail (25) is fixedly installed on the bottom wall of the combustion test chamber (2). The drive motor (27) is fixedly installed on one end of the fixed slide rail (25). The output end of the drive motor (27) is fixedly connected to one end of the lead screw (26). The other end of the lead screw (26) is rotatably connected to the fixed slide rail (25). The slider (28) is threadedly connected to the lead screw (26) and is slidably installed on the top of the fixed slide rail (25). The top of the slider (28) is fixedly connected to the sample feeding head (9).

8. The liquid continuous combustion test apparatus according to claim 7, characterized in that, The lifting assembly includes a fixed slide rail (29), a lead screw (30), a drive motor (31), and a slider (32). The fixed slide rail (29) is fixedly installed on the inner wall of the combustion test chamber (2). The drive motor (31) is fixedly installed at one end of the fixed slide rail (29). The output end of the drive motor (31) is fixedly connected to one end of the lead screw (30). The other end of the lead screw (30) is rotatably connected to the fixed slide rail (29). The slider (32) is threadedly connected to the lead screw (30) and is slidably installed on one side of the fixed slide rail (29). A connecting block (33) is fixedly connected to one side of the slider (32). The connecting block (33) is fixedly connected to the outer wall of the combined combustion and fire extinguishing nozzle (3).

9. The liquid continuous combustion test apparatus according to claim 8, characterized in that, Both the gas supply pipe (18) and the supply pipe (23) are provided with check valves (34) on their outer surfaces.

10. The liquid continuous combustion test apparatus according to claim 9, characterized in that, An air pump (35) is connected to one side of both the liquid storage tank (8) and the storage tank (21).

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