阅读说明：本技术 一种具有检测无卤阻燃聚乙烯性能的装置 (Device with detect and have steamed fire-retardant polyethylene performance ) 是由 张晓红 缪江明 王樟水 缪绸 张贺 张莉 于 2020-11-25 设计创作，主要内容包括：本发明涉及阻燃检测设备技术领域,且公开了一种具有检测无卤阻燃聚乙烯性能的装置,包括支撑架、燃烧装置与灭火装置,所述支撑架的中下部固定安装有隔板,支撑架的顶部固定安装有试验箱,所述试验箱包括实验箱体、移动架、电动推杆、移动块、转轴、链轮、移动槽、链条、滑动块、滑动槽、复位弹簧、连接杆、固定框、U型夹、火焰探测器与温度探测器,所述实验箱体固定安装在支撑架的顶部,移动架固定安装在实验箱体内部的一侧,电动推杆固定安装在移动架的内部,移动块与电动推杆的顶部固定连接,转轴与移动块的中部转动连接。本发明解决了无卤阻燃聚乙烯与火焰的距离不精准恒定,无法测定表面温度的问题。(The invention relates to the technical field of flame-retardant detection equipment, and discloses a device for detecting the performance of halogen-free flame-retardant polyethylene, which comprises a support frame, a combustion device and a fire extinguishing device, wherein a partition plate is fixedly arranged at the middle lower part of the support frame, a test box is fixedly arranged at the top of the support frame, the test box comprises an experiment box body, a moving frame, an electric push rod, a moving block, a rotating shaft, a chain wheel, a moving groove, a chain, a sliding block, a sliding groove, a reset spring, a connecting rod, a fixing frame, a U-shaped clamp, a flame detector and a temperature detector, the experiment box body is fixedly arranged at the top of the support frame, the moving frame is fixedly arranged at one side inside the experiment box body, the electric push rod is fixedly arranged inside the moving frame, the moving. The invention solves the problems that the distance between the halogen-free flame-retardant polyethylene and flame is not accurate and constant, and the surface temperature cannot be measured.)

1. The utility model provides a device with detect halogen-free fire-retardant polyethylene performance, includes support frame (1), burner (3) and extinguishing device (4), its characterized in that: a partition plate (5) is fixedly installed at the middle lower part of the support frame (1), and a test box (2) is fixedly installed at the top of the support frame (1);

the test box (2) comprises an experiment box body (6), a moving frame (7), an electric push rod (8), a moving block (9), a rotating shaft (10), a chain wheel (11), a moving groove (12), a chain (13), a sliding block (14), a sliding groove (15), a reset spring (16), a connecting rod (17), a fixed frame (18), a U-shaped clamp (19), a flame detector (20) and a temperature detector (21), wherein the experiment box body (6) is fixedly arranged at the top of the supporting frame (1), the moving frame (7) is fixedly arranged at one side inside the experiment box body (6), the electric push rod (8) is fixedly arranged inside the moving frame (7), the moving block (9) is fixedly connected with the top of the electric push rod (8), the rotating shaft (10) is rotatably connected with the middle part of the moving block (9), and two ends of the rotating shaft (10) are slidably connected with the moving groove (, the chain wheel (11) is rotationally connected with the rotating shaft (10), the moving groove (12) is arranged on the inner wall of the moving frame (7), the chain (13) is in transmission connection with the chain wheel (11), one end of the chain (13) is fixedly connected with the bottom of the moving frame (7), the other end of the chain (13) is fixedly connected with the sliding block (14), the sliding block (14) is in sliding connection with the sliding groove (15), the sliding groove (15) is arranged on the side surface of the moving frame (7), one end of the reset spring (16) is fixedly connected with the bottom of the sliding block (14), the other end of the reset spring (16) is fixedly connected with the bottom of the moving frame (7), the connecting rod (17) is fixedly connected with the side surface of the connecting rod (14), the fixing frame (18) is fixedly connected with the other end of the connecting rod (17), the U-shaped clamp (19) is fixedly arranged in the fixing frame (18), the flame detector (20) is fixedly arranged on the side, the temperature detector (21) is fixedly arranged on the side surface of the fixed frame (18);

the combustion device (3) comprises a fuel tank (22), a fuel pipe (23), an electronic control flow valve (24) and a combustion nozzle (25), the fuel tank (22) is fixedly arranged on the upper surface of the partition plate (5), the combustion nozzle (25) is fixedly arranged at the bottom inside the test box body (6), the fuel tank (22) and the combustion nozzle (25) are fixedly connected through the fuel pipe (23), and the electronic control flow valve (24) is fixedly arranged in the middle of the fuel pipe (23);

extinguishing device (4) are including gas bomb (26), automatically controlled stop valve (27), gas-supply pipe (28), jet-propelled board (29), gas pocket (30), support column (31) and baffling cap (32), gas bomb (26) fixed mounting is in the bottom of support frame (1), and jet-propelled board (29) fixed mounting is at the inside top of experiment box (6), and gas bomb (26) and jet-propelled board (29) pass through gas-supply pipe (28) fixed connection, and automatically controlled stop valve (27) fixed mounting is at the middle part of gas-supply pipe (28), and the bottom at jet-propelled board (29) is seted up in gas pocket (30), top gas pocket (30) fixed connection of support column (31), baffling cap (32) and the bottom fixed connection of support column (31).

2. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the movable rack (7) is provided with two movable racks, one movable rack (7) is fixedly installed on the side wall of the experiment box body (6), and the other movable rack (7) is fixedly installed on the bottom inside the experiment box body (6).

3. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the front side and the rear side of the sliding block (14) are provided with sliding grooves, and the width of each sliding groove is the same as the thickness of the corresponding sliding groove (15).

4. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the fixed frame (18) is a square frame, the number of the U-shaped clamps (19) is six, the six U-shaped clamps (19) are symmetrically arranged inside the fixed frame (18), and one fixed frame (18) is arranged right above the combustion nozzle (25).

5. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the temperature detector (21) and the flame detector (20) are fixedly arranged on one surface of the fixed frame (18) far away from the combustion nozzle (25), and the temperature detector (21) and the flame detector (20) are arranged on two symmetrical edges of the fixed frame (18).

6. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the gas storage cylinder (26) is filled with pressurized gas which is non-combustible inert gas or carbon dioxide.

7. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the number of the air holes (30) is a plurality, and the air holes are uniformly formed in the bottom of the air injection plate (29).

8. The device for detecting the performance of the halogen-free flame retardant polyethylene according to claim 1, wherein: the shape of the baffling cap (32) is circular arc, and the opening of the baffling cap (32) is upward.

Technical Field

The invention relates to the technical field of flame-retardant detection equipment, in particular to a device for detecting the performance of halogen-free flame-retardant polyethylene.

Background

Polyethylene is a thermoplastic resin obtained by polymerizing ethylene. In industry, copolymers of ethylene with small amounts of alpha-olefins are also included. The polyethylene is odorless and nontoxic, feels like wax, has excellent low-temperature resistance (the lowest use temperature can reach-100 to-70 ℃), has good chemical stability, and can resist corrosion of most of acid and alkali (cannot resist acid with oxidation property). Is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation. However, common polyethylene is very flammable and can be burned as long as open fire approaches, so that the application range of polyethylene is greatly reduced, and the flame retardant is added into polyethylene to enhance the flame retardant property of polyethylene, so that the application scenes of polyethylene are diversified.

The halogen-free polyethylene added with the flame retardant needs to be detected for the fire resistance and the flame retardance, the detection mode is generally flame ignition, the existing detection mode is that mostly the halogen-free flame-retardant polyethylene to be detected is manually clamped by hands or a handheld fixture, the halogen-free flame-retardant polyethylene is enabled to be gradually close to the flame, the halogen-free flame-retardant polyethylene is positioned at a specific distance for a period of time, whether the combustion or the blackening phenomenon occurs or not is observed, the distance between the halogen-free flame-retardant polyethylene and the flame is accurate and constant in the mode, the surface temperature of the halogen-free flame-retardant polyethylene cannot be determined, and the potential safety hazard.

Disclosure of Invention

The invention aims to provide a device for detecting the performance of halogen-free flame-retardant polyethylene, which achieves the aims of accurate and constant distance between flame-retardant polyethylene and flame and eliminating potential safety hazard.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a device with detect halogen-free fire-retardant polyethylene performance, includes support frame, burner and extinguishing device, the well lower part fixed mounting of support frame has the baffle, and the top fixed mounting of support frame has the proof box.

The test box comprises an experiment box body, a moving frame, an electric push rod, a moving block, a rotating shaft, a chain wheel, a moving groove, a chain, a sliding block, a sliding groove, a reset spring, a connecting rod, a fixing frame, a U-shaped clamp, a flame detector and a temperature detector, wherein the experiment box body is fixedly arranged at the top of a supporting frame, the moving frame is fixedly arranged at one side inside the experiment box body, the electric push rod is fixedly arranged inside the moving frame, the moving block is fixedly connected with the top of the electric push rod, the rotating shaft is rotatably connected with the middle part of the moving block, two ends of the rotating shaft are slidably connected with the moving groove, the chain wheel is rotatably connected with the rotating shaft, the moving groove is arranged on the inner wall of the moving frame, the chain is in transmission connection with the chain wheel, one end of the chain is fixedly connected with the bottom of the moving, reset spring's one end and the bottom fixed connection of sliding block, reset spring's the other end and the bottom fixed connection who removes the frame, the side fixed connection of connecting rod and sliding block, the other end fixed connection of fixed frame and connecting rod, the fixed installation of U type clamp is in the inside of fixed frame, flame detector fixed mounting is in the side of fixed frame, temperature detector fixed mounting is in the side of fixed frame.

The combustion device comprises a fuel tank, a fuel pipe, an electric control flow valve and a combustion nozzle, wherein the fuel tank is fixedly installed on the upper surface of the partition plate, the combustion nozzle is fixedly installed at the bottom inside the test box body, the fuel tank and the combustion nozzle are fixedly connected through the fuel pipe, and the electric control flow valve is fixedly installed in the middle of the fuel pipe.

Extinguishing device includes gas bomb, automatically controlled stop valve, gas-supply pipe, jet-propelled board, gas pocket, support column and baffling cap, gas bomb fixed mounting is in the bottom of support frame, and jet-propelled board fixed mounting passes through gas-supply pipe fixed connection at the inside top of experiment box, gas bomb and jet-propelled board, and automatically controlled stop valve fixed mounting is in the middle part of gas-supply pipe, and the bottom at the jet-propelled board is seted up to the gas pocket, the top gas pocket fixed connection of support column, the bottom fixed connection of baffling cap and support column.

Preferably, the movable frame is provided with two, one movable frame is fixedly installed on the side wall of the experiment box body, and the other movable frame is fixedly installed on the bottom inside the experiment box body.

Preferably, the front side and the rear side of the sliding block are provided with sliding grooves, and the width of each sliding groove is the same as the thickness of each sliding groove.

Preferably, the fixing frame is a square frame, the number of the U-shaped clamps is six, the six U-shaped clamps are symmetrically arranged inside the fixing frame, and one of the fixing frames is arranged right above the combustion nozzle.

Preferably, the temperature detector and the flame detector are fixedly arranged on one surface of the fixing frame far away from the combustion nozzle, and the temperature detector and the flame detector are arranged on two symmetrical edges of the fixing frame.

Preferably, the gas cylinder is filled with a pressurized gas, which is a non-combustible inert gas or carbon dioxide.

Preferably, the number of the air holes is a plurality, and the air holes are uniformly formed in the bottom of the air injection plate.

Preferably, the shape of the baffling cap is circular arc, and the opening of the baffling cap faces upwards.

The invention provides a device for detecting the performance of halogen-free flame-retardant polyethylene. The method has the following beneficial effects:

(1) the electric push rod is used as moving power in the moving frame, so that the moving process of the whole moving frame can meet the experiment requirement of the fixing frame well, meanwhile, the moving groove formed in the moving frame can ensure that the whole moving block can move along the consistent direction all the time, the moving block cannot deviate, the operation of the moving frame can be well ensured by matching with the electric push rod, meanwhile, the fixing frame is driven to move by moving of the sliding block, and the temperature detector and the flame detector which are installed on the fixing frame can detect the temperature and whether the halogen-free flame-retardant polyethylene burns or not in real time by matching with the experiment requirement.

(2) The chain wheel is rotatably connected to the moving block through the rotating shaft, and the chain in transmission connection with the chain wheel controls the moving of the sliding block, so that the whole sliding block can freely move on the moving frame, the chain enables the moving block on the electric push rod not to reach the bottom of the moving block and enables the sliding block to freely reach the bottom of the moving block, the connecting rod and the fixed frame which are fixedly connected to the sliding block can freely move within the length range of the whole moving frame, and the distance between the halogen-free flame-retardant polyethylene and flame can be accurately controlled.

(3) According to the invention, the fuel tank is arranged in the support frame, the fuel is provided for the combustion nozzle through the fuel pipe, the flame retardant property of the halogen-free flame retardant polyethylene is detected by enabling the halogen-free flame retardant polyethylene to be close to the flame on the combustion nozzle, and the flow of the fuel in the fuel pipe can be controlled by the electric control flow valve arranged in the middle of the fuel pipe, so that an experimenter can control the size of the flame by controlling the flow of the fuel, and the experiment can be more accurate.

(4) According to the invention, the top of the experimental box body is provided with the gas spraying plate, pressurized flame-retardant gas stored in the gas storage cylinder is sprayed into the test box through the gas hole formed in the bottom of the gas spraying plate, so that the halogen-free flame-retardant polyethylene can be quickly extinguished once the halogen-free flame-retardant polyethylene is combusted in the experimental process, a fire disaster is prevented, meanwhile, the deflection cap arranged at the bottom of the gas hole can deflect the quickly sprayed flame-retardant gas, and the gas is prevented from breaking the halogen-free flame-retardant polyethylene on the fixing frame, so that the observation of experimental results by experimenters is influenced.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a diagram of the structure of the experimental box of the present invention;

FIG. 3 is a block diagram of the mobile frame of the present invention;

figure 4 is a side view of the fixed frame of the present invention;

FIG. 5 is a view showing the structure of the gas injection plate of the present invention.

In the figure: 1 support frame, 2 test boxes, 3 combustion devices, 4 fire extinguishing devices, 5 partition plates, 6 experiment box bodies, 7 moving frames, 8 electric push rods, 9 moving blocks, 10 rotating shafts, 11 chain wheels, 12 moving grooves, 13 chains, 14 sliding blocks, 15 sliding grooves, 16 reset springs, 17 connecting rods, 18 fixing frames, 19U-shaped clamps, 20 flame detectors, 21 temperature detectors, 22 fuel tanks, 23 fuel pipes, 24 electric control flow valves, 25 combustion nozzles, 26 gas storage bottles, 27 electric control stop valves, 28 gas pipes, 29 gas spraying plates, 30 air holes, 31 supporting columns and 32 baffling caps.

Detailed Description

As shown in fig. 1 to 5, the present invention provides a technical solution:

the utility model provides a device with detect halogen-free fire-retardant polyethylene performance, includes support frame 1, burner 3 and extinguishing device 4, and the well lower part fixed mounting of support frame 1 has baffle 5, and the top fixed mounting of support frame 1 has proof box 2.

The test box 2 comprises an experiment box body 6, two moving frames 7, an electric push rod 8, a moving block 9, a rotating shaft 10, a chain wheel 11, a moving groove 12, a chain 13, a sliding block 14, a sliding groove 15, a reset spring 16, a connecting rod 17, a fixing frame 18, a U-shaped clamp 19, a flame detector 20 and a temperature detector 21, wherein the experiment box body 6 is fixedly arranged at the top of a supporting frame 1, the moving frames 7 are fixedly arranged at one side inside the experiment box body 6, the two moving frames 7 are arranged, one moving frame 7 is fixedly arranged with the side wall of the experiment box body 6, the other moving frame 7 is fixedly arranged with the bottom inside the experiment box body 6, the height of the fixing frame 18 is adjusted by arranging the two moving frames, the distance between the fixing frame 18 and the side face of flame is adjusted by the one adjusting frame, so that the experiment can more accurately measure the performance of halogen, the moving block 9 is fixedly connected with the top of the electric push rod 8, the rotating shaft 10 is rotatably connected with the middle part of the moving block 9, two ends of the rotating shaft 10 are slidably connected with the moving groove 12, the chain wheel 11 is rotatably connected with the rotating shaft 10, the moving groove 12 is arranged on the inner wall of the moving frame 7, the chain 13 is in transmission connection with the chain wheel 11, one end of the chain 13 is fixedly connected with the bottom of the moving frame 7, the other end of the chain 13 is fixedly connected with the sliding block 14, the sliding block 14 is slidably connected with the sliding groove 15, sliding grooves are arranged on the front side and the rear side of the sliding block 14, the width of the sliding groove is the same as the thickness of the sliding groove 15, the sliding groove is arranged on the sliding block 14, the sliding block 14 slides more smoothly, the sliding groove 15 is arranged on the side of the moving frame 7, one end of the return spring 16 is fixedly connected with the bottom of the sliding block, the fixed frame 18 is fixedly connected with the other end of the connecting rod 17, the fixed frame 18 is a regular quadrilateral frame, the number of U-shaped clamps 19 is six, one of the fixed frame 18 is arranged right above the combustion nozzle 25, the six U-shaped clamps 19 are symmetrically arranged in the fixed frame 18, the halogen-free flame retardant polyethylene is fixed in the middle of the fixed frame 18 through the six U-shaped clamps 19, then the test is carried out, the U-shaped clamps 19 are fixedly arranged in the fixed frame 18, the flame detector 20 is fixedly arranged on the side surface of the fixed frame 18, the temperature detector 21 and the flame detector 20 are fixedly arranged on one surface of the fixed frame 18 far away from the combustion nozzle 25, the temperature detector 21 and the flame detector 20 are arranged on two symmetrical edges of the fixed frame 18, the electric push rod 8 is used as the moving power in the moving frame 7, so that the moving, meanwhile, the moving groove 12 formed on the moving frame 7 can ensure that the whole moving block 9 can move along the consistent direction all the time without deviation, the operation of the moving frame 7 can be well ensured by matching with the electric push rod 8, meanwhile, the moving frame 18 is driven to move by the movement of the sliding block 14, the temperature detector 21 and the flame detector 20 mounted on the fixing frame 18 can detect the temperature and whether the halogen-free flame-retardant polyethylene is burnt or not in real time by matching with the experimental requirements, the chain wheel 11 is rotationally connected on the moving block 9 through the rotating shaft 10, the movement of the sliding block 14 is controlled through the chain 13 in transmission connection with the chain wheel 11, so that the whole sliding block 14 can freely move on the moving frame 7, and the sliding block 14 can freely reach the bottom of the moving block 9 on the electric push rod 8 through the chain 13 by using the chain 13, the connecting rod 17 and the fixed frame 18 fixedly connected to the sliding block 14 can also move freely within the length range of the whole moving frame 7, so that the distance between the halogen-free flame-retardant polyethylene and the flame can be accurately controlled.

The combustion device 3 comprises a fuel tank 22, a fuel pipe 23, an electronic control flow valve 24 and a combustion nozzle 25, the fuel tank 22 is fixedly installed on the upper surface of the partition board 5, the combustion nozzle 25 is fixedly installed at the bottom inside the test box body 6, the fuel tank 22 and the combustion nozzle 25 are fixedly connected through the fuel pipe 23, the electronic control flow valve 24 is fixedly installed in the middle of the fuel pipe 23, the fuel tank 22 is arranged in the support frame 1, fuel is provided for the combustion nozzle 25 through the fuel pipe 23, the flame retardant performance of the halogen-free flame retardant polyethylene is detected by enabling the halogen-free flame retardant polyethylene to be close to the flame on the combustion nozzle 25, the electronic control flow valve 24 arranged in the middle of the fuel pipe 23 can control the flow of the fuel in the fuel pipe 23, so that an experime.

The fire extinguishing device 4 comprises a gas storage bottle 26, an electric control stop valve 27, a gas pipe 28, a gas spraying plate 29, gas holes 30, a support column 31 and a baffle cap 32, wherein the gas storage bottle 26 is fixedly arranged at the bottom of the support frame 1, the gas storage bottle 26 is filled with pressurized gas which is non-combustible inert gas or carbon dioxide, flames in the test box 2 are extinguished through flame-retardant gas, fire is prevented from happening, the gas spraying plate 29 is fixedly arranged at the top inside the experiment box body 6, the gas storage bottle 26 is fixedly connected with the gas spraying plate 29 through the gas pipe 28, the electric control stop valve 27 is fixedly arranged at the middle part of the gas pipe 28, the gas holes 30 are arranged at the bottom of the gas spraying plate 29, the gas holes 30 are uniformly arranged at the bottom of the gas spraying plate 29, the flame-retardant gas is sprayed out after passing through a gas cavity of the gas spraying plate 29, and the flame-retardant gas is sprayed out through the gas holes 30, top gas pocket 30 fixed connection of support column 31, the bottom fixed connection of baffling cap 32 and support column 31, the shape of baffling cap 32 is arc, and the opening of baffling cap 32 upwards, top through at experiment box 6 sets up gas jet plate 29, the pressurization flame retardant gas who stores in with the gas bomb 26 through the gas pocket 30 of seting up in gas jet plate 29 bottom sprays to proof box 2 inside, in the experimentation in case halogen-free flame retardant polyethylene takes place the burning can be quick with it put out, prevent to arouse the conflagration, the baffling cap 32 that sets up simultaneously in gas pocket 30 bottom can carry out the baffling to quick spun flame retardant gas, prevent that gaseous halogen-free flame retardant polyethylene on with mount 18 from dashing, influence the experimenter to the observation of experimental result.

When in use, the halogen-free flame-retardant polyethylene is fixed in the fixed frame 18 through the U-shaped clamp 19, the burning nozzle 25 is ignited, the size of flame is controlled through the electric control flow valve 24, the moving block 9 is pushed to move along the moving groove 12 through the electric push rod 8, the chain wheel 11 is made to rotate, the length of the chain 13 on one side of the sliding block 14 is further changed, the sliding block 14 is driven to move, the distance between the fixed frame 18 and the flame is changed and fixed, the temperature detector 21 and the flame detector 20 arranged on the fixed frame 18 can detect the temperature of the halogen-free flame-retardant polyethylene in real time and whether the halogen-free flame-retardant polyethylene is burnt, once the halogen-free flame-retardant polyethylene starts to burn, the electric control stop valve 27 is opened, pressurized flame-retardant gas stored in the gas storage bottle 26 is sprayed into the test box 2 through the air holes 30 arranged at the bottom of the air spray plate 29 to, the gas is prevented from breaking the halogen-free flame-retardant polyethylene on the fixing frame 18, and the observation of the experiment result by the experimenter is influenced.

In conclusion, the electric push rod 8 is used as the moving power in the moving frame 7, so that the whole moving process of the moving frame 7 can meet the experimental requirements of the fixed frame 18, meanwhile, the moving groove 12 formed in the moving frame 7 can ensure that the whole moving block 9 can move along the consistent direction, and can not deviate, and when the electric push rod 8 is used in cooperation, the moving frame 7 can be well ensured to run, meanwhile, the fixed frame 18 is driven to move through the movement of the sliding block 14, and the temperature detector 21 and the flame detector 20 which are installed on the fixed frame 18 can detect the temperature of the halogen-free flame-retardant polyethylene and whether the halogen-free flame-retardant polyethylene is combusted or not in real time according to the experimental requirements; the chain wheel 11 is rotatably connected to the moving block 9 through the rotating shaft 10, and the chain 13 in transmission connection with the chain wheel 11 controls the movement of the sliding block 14, so that the whole sliding block 14 can freely move on the moving frame 7, the chain 13 is used for enabling the bottom of the moving block 9 on the electric push rod 8 which cannot reach the bottom to be freely reached by the chain 13, and the connecting rod 17 and the fixed frame 18 which are fixedly connected to the sliding block 14 can freely move within the length range of the whole moving frame 7, so that the distance between the halogen-free flame-retardant polyethylene and flame can be accurately controlled; the fuel tank 22 is arranged in the support frame 1, the fuel pipe 23 is used for providing fuel for the combustion nozzle 25, the halogen-free flame-retardant polyethylene is close to flame on the combustion nozzle 25 to detect the flame retardant property of the halogen-free flame-retardant polyethylene, and the electric control flow valve 24 arranged in the middle of the fuel pipe 23 can control the flow rate of the fuel in the fuel pipe 23, so that experimenters can control the flow rate of the flame by controlling the flow rate of the fuel, and the experiment can be more accurate; set up gas spout board 29 through the top at experiment box 6, the pressurization flame retardant gas who stores in with the gas bomb 26 through the gas pocket 30 of seting up in gas spout board 29 bottom sprays test box 2 inside, in case there is not steamed flame retardant polyethylene to take place the burning can be quick with it and put out in the experimentation, prevent to arouse the conflagration, the baffling cap 32 that sets up simultaneously in gas pocket 30 bottom can carry out the baffling to quick spun flame retardant gas, prevent that gaseous halogen-free flame retardant polyethylene on with mount 18 from breaking through, influence the observation of experimenter to the experimental result.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.