CN214278058U

CN214278058U - Glow wire ignition test device

Info

Publication number: CN214278058U
Application number: CN202120438358.8U
Authority: CN
Inventors: 鹿文军; 陈新; 周毅; 李许; 王成涛; 周海波
Original assignee: Shenzhen Customs Industrial Products Testing Technology Center
Current assignee: Shenzhen Customs Industrial Products Testing Technology Center
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-09-24
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a glow wire ignition nature test device, including experimental frame, the top fixed mounting of experimental frame has experimental machine case, and has seted up the test chamber in the positive left side of experimental machine case, the left wall movable mounting of test chamber entry has the protection hatch door, and is equipped with transparent window on the protection hatch door, the inner diapire fixed mounting of test chamber has the tester body, and the installation slide rail has been seted up at the top of the tester body. This glow wire ignition nature test device, the advancing and retreating device moves to the right, thereby make the test sample on it move to the right and just with the contact of the glow wire body, adjust the adjustable resistance button, make the resistance that inserts the glow wire body change, with the size of this change current, thereby control temperature, make the glow wire body reach the temperature of survey, its thermocouple detectable reaches the temperature of the glow wire body this moment, its numerical value shows on the temperature display surface, make the observation more directly perceived, the operation is thus simple, and reasonable design, safety and reliability.

Description

Glow wire ignition test device

Technical Field

The utility model relates to a glowing filament test technical field specifically is a glowing filament ignition nature test device.

Background

The glow wire test device is a test instrument device for a material combustion test, and the glow wire test device is designed and manufactured according to the requirement of a glow wire test method in the glow wire test standard, is suitable for carrying out ignition risk tests on electrical and electronic products, household appliances and materials thereof, and is also used for a flameless ignition source ignition test to measure the glow ignition initiation temperature, the combustibility and the flame resistance index of related materials.

As the requirements of customers on safety become more stringent, the requirements on the glow wire test device itself become more stringent, and therefore, the reliability and stability of the performance of the glow wire test device need to be improved urgently.

To this end, it is necessary to design a glow wire ignition test apparatus so as to solve the problems set forth above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a glow wire is played and is fired nature test device to solve the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: a glow wire ignition test device comprises a test machine base, a test machine box is fixedly arranged at the top of the test machine base, and the left side of the front of the test case is provided with a test chamber, the left wall of the test chamber inlet is movably provided with a protective chamber door, and the protective cabin door is provided with a transparent window, the inner bottom wall of the test cabin is fixedly provided with a test instrument body, and the top of the tester body is provided with a mounting slide rail, the inside of the mounting slide rail is provided with an advancing and retreating device in a sliding way, and the top of the advancing and retreating device is provided with a clamping slot, a test sample is clamped and fixed in the clamping slot, the right side of the inner bottom wall of the mounting slide rail is fixedly connected with a vertical frame, the top end of the vertical frame is fixedly connected with a balance plate, the top of the balance plate is fixedly connected with a U-shaped heating ring, and install the glowing filament body through the screw on the U type heating ring, install the thermocouple through the screw on the glowing filament body.

Preferably, install master controller and display mechanism on the experimental machine case, and display mechanism is located the top of master controller, the master controller comprises temperature sensor, adjustable resistance button, timing device and timing button, temperature sensor and thermocouple coupling are connected, the glowing filament body is established ties and is had adjustable resistance, display mechanism includes time display face and temperature display face.

Preferably, the top of the test chamber is provided with a suction fan, the top of the suction fan is communicated with a smoke exhaust pipe, the other end of the smoke exhaust pipe is communicated with a gas purification cylinder, the gas purification cylinder is arranged at the top of the testing machine box, and the main controller is further provided with a fan button.

Preferably, the locating pulley is installed at the top of the balance plate, the right side fixedly connected with high temperature resistant steel rope of the advancing and retreating device, the other end of the high temperature resistant steel rope penetrates through the locating pulley and is fixedly connected with a hook, and the hook is hung by a tension weight.

Preferably, the right side fixed mounting at tester body top has electric telescopic handle, and electric telescopic handle's top fixedly connected with holds puts the dish, and the bottom of pulling force weight and the top contact of holding.

Preferably, the front surface of the advancing and retreating device is movably provided with a flame ruler through a positioning pin.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this glowing filament ignition nature test device, open the protection hatch door, assemble the glowing filament body and thermocouple (ensure that the screw is screwed up), with test sample joint in the centre gripping draw-in groove, close the protection hatch door, the advancing and retreating device is moved by the linear electric motor control in it, make the advancing and retreating device move right, thereby make the test sample on it move right and just with glowing filament body contact, adjust adjustable resistance button, make the resistance of inserting the glowing filament body change, with this size that changes the electric current, thereby control temperature, make the glowing filament body reach the temperature of survey, its thermocouple detectable arrives the temperature of the glowing filament body this moment, its numerical value shows on the temperature display surface, make the observation more directly perceived, the operation is simple, and reasonable design, safety and reliability.

(2) This glow wire ignition test device, the time that the glow wire body was applyed in the experiment is thirty seconds, and the glow wire body is applyed automatic back-off after thirty seconds, and timing device records the after flame, if the sample has not been lit off during the glow wire body is applyed, or goes out in thirty seconds after the glow wire back-off automatically, and there is not ignition bottom layer during the experiment in addition, just judges that the experiment is qualified to the survey under the different temperatures of its adaptation.

(3) The glow wire ignition test device can be hung on a hook by a tension weight before a test, the tension weight is initially positioned on a bearing disc, a high-temperature-resistant steel rope does not apply force to an advancing and retreating device, an electric telescopic rod is started during the test, the electric telescopic rod stretches to enable the bearing disc to move downwards, the tension weight is in a suspended state at the moment, the tension force applied to the advancing and retreating device is the same as the gravity force of the tension weight (the friction force applied to the advancing and retreating device is extremely small and ignored), the force action is mutual, so that the force applied to a test sample by a glow wire body is the same as the gravity force of the tension weight, the pressure of the glow wire body at the same temperature is different when the glow wire body is applied to the test sample, the combustion phenomenon of the material can be different completely (the pressure is larger, the material is easier to ignite, the material is more severe), the test pressure of the glow wire test is regulated by a standard range of 0.8N-1.2N, the pressure is controlled by measuring qualified tensile force removing codes, so that the test data is more convincing.

(4) This glow wire ignition test device, when experimental the end, treat the temperature natural cooling back in the test chamber, start the suction fan, the suction fan absorbs cigarette ash and waste gas in the test chamber through the pipe of discharging fume to guarantee the safety of air in the test chamber, open the protection hatch door again and internally clean, so that the use of next test, the flame chi can swing to vertical state round the locating pin, so that observe and take notes the height of flame, the practicality is better.

Drawings

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

FIG. 2 is a perspective view of the structure tester body of the present invention;

fig. 3 is a perspective view of the structure advancing and retreating device of the present invention after moving.

In the figure: 1. a test stand; 2. a test chassis; 3. a test chamber; 4. a protective hatch; 5. a transparent window; 6. testing the instrument body; 60. installing a slide rail; 61. a driving and reversing device; 62. clamping a clamping groove; 63. a test sample; 64. erecting a frame; 65. a balance plate; 66. a U-shaped heating ring; 67. a glow wire body; 68. a thermocouple; 7. a master controller; 8. a display mechanism; 9. a suction fan; 10. a smoke exhaust pipe; 11. a gas purification cartridge; 12. positioning the pulley; 13. high temperature resistant steel ropes; 14. hooking; 15. a tension weight; 16. automatically telescoping the rod; 17. a bearing disc; 18. positioning pins; 19. a flame ruler.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a glowing filament ignition test device comprises a test machine base 1, a test machine case 2 is fixedly installed at the top of the test machine base 1, a test chamber 3 is arranged on the left side of the front face of the test machine case 2, a protection cabin door 4 is movably installed on the left wall of an inlet of the test chamber 3, a transparent window 5 is arranged on the protection cabin door 4, a test instrument body 6 is fixedly installed on the inner bottom wall of the test chamber 3, an installation slide rail 60 is arranged at the top of the test instrument body 6, an advancing and retreating device 61 is installed in the installation slide rail 60 in a sliding mode, a clamping groove 62 is arranged at the top of the advancing and retreating device 61, a test sample 63 is fixedly clamped inside the clamping groove 62, a vertical frame 64 is fixedly connected to the right side of the inner bottom wall of the installation slide rail 60, a balance plate 65 is fixedly connected to the top end of the vertical frame 64, a U-shaped heating ring 66 is fixedly connected to the top of the balance plate 65, and a glowing filament body 67 is installed on the U-shaped heating ring 66 through screws, a thermocouple 68 is screwed to the glow wire body 67.

The main controller 7 and the display mechanism 8 are installed on the test case 2, the display mechanism 8 is located above the main controller 7, the main controller 7 is composed of a temperature sensor, an adjustable resistance button, a timing device and a timing button, the temperature sensor is coupled with the thermocouple 68, the glow wire body 67 is connected with the adjustable resistance in series, and the display mechanism 8 comprises a time display surface and a temperature display surface.

The suction fan 9 is installed at the top of the test chamber 3, the top of the suction fan 9 is communicated with the smoke exhaust pipe 10, the other end of the smoke exhaust pipe 10 is communicated with the gas purification cylinder 11, the gas purification cylinder 11 is installed at the top of the test case 2, and the main controller 7 is further provided with a fan button.

The top of the balance plate 65 is provided with a positioning pulley 12, the right side of the driving and reversing device 61 is fixedly connected with a high temperature resistant steel rope 13, the other end of the high temperature resistant steel rope 13 penetrates through the positioning pulley 12 and is fixedly connected with a hook 14, and a tension weight 15 is hung on the hook 14.

The right side fixed mounting at the tester body 6 top has electric telescopic handle 16, and electric telescopic handle 16's top fixedly connected with holds puts dish 17, and the bottom of pulling force weight 15 contacts with the top of holding.

The front surface of the advancing and retreating device 61 is movably provided with a flame ruler 19 through a positioning pin 18.

The working principle is as follows: the protection cabin door 4 is opened, the glowing filament body 67 and the thermocouple 68 are assembled (screws are ensured to be screwed tightly), the test sample 63 is clamped in the clamping groove 62, the protection cabin door 4 is closed, the advancing and retreating device 61 moves under the control of the linear motor in the advancing and retreating device 61, the advancing and retreating device 61 moves rightwards, the test sample 63 on the advancing and retreating device moves rightwards and is just contacted with the glowing filament body 67, the adjustable resistance button is adjusted, the resistance of the entered glowing filament body 67 is changed, the current is changed, the temperature is controlled, the glowing filament body reaches the measured temperature, the thermocouple 68 can detect the temperature of the glowing filament body 67 at the moment, and the numerical value is displayed on the temperature display surface, so that the observation is more visual, the operation is simple, the design is reasonable, and the safety and the reliability are realized; the time of the application of the glowing filament body 67 in the test is thirty seconds, the glowing filament body 67 automatically retreats after being applied for thirty seconds, the timing device records the after flame, if the sample does not ignite during the application of the glowing filament body 67, or automatically extinguishes within thirty seconds after the glowing filament body 67 retreats, and no ignition bedding layer exists during the test, the test is judged to be qualified, and the glowing filament body 67 is suitable for the measurement at different temperatures; before the test, a tension weight 15 can be hung on a hook 14, the tension weight 15 is firstly positioned on a bearing disc 17, the high-temperature resistant steel rope 13 of the tension weight does not apply force to the advancing and retreating device 61, the electric telescopic rod 16 is started during the test, the electric telescopic rod 16 is stretched to enable the bearing disc 17 to move downwards, the tension weight 15 is in a suspended state at the moment, the tension force applied to the advancing and retreating device 61 is the same as the gravity of the tension weight 15 (the friction force applied to the advancing and retreating device 61 is extremely small and is ignored), the force action is mutual, so that the force applied to a test sample 63 by a glowing filament body 67 is the same as the gravity of the tension weight 15, the glowing filament body 67 at the same temperature is different in pressure when applied to the test sample 63, the combustion phenomenon of the material can be quite different (the higher the pressure is, the material is easier to ignite, the harsher filament is more), the test pressure of the glowing filament test is specified by the standard to be 0.8N-1.2N, the pressure is controlled by the tensile force dispelling code 15 qualified in measurement, so that the test data is more convincing; when the experiment ended, treat the temperature natural cooling back in the test chamber 3, start suction fan 9, suction fan 9 absorbs cigarette ash and waste gas in the test chamber 3 through exhaust pipe 10 to the safety of air in the guarantee test chamber 3 opens protection hatch door 4 again and cleans inwards, so that the use of next test, flame chi 19 can swing to vertical state round locating pin 18, so that observe and take notes the height of flame, and the practicality is better.

Those not described in detail in this specification are within the skill of the art.

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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a glow wire ignition test device, includes test frame (1), its characterized in that: the testing machine comprises a testing machine base (1), a testing machine case (2) is fixedly mounted at the top of the testing machine base (1), a testing cabin (3) is arranged on the left side of the front face of the testing machine case (2), a protection cabin door (4) is movably mounted on the left wall of an inlet of the testing cabin (3), a transparent window (5) is arranged on the protection cabin door (4), a testing instrument body (6) is fixedly mounted on the inner bottom wall of the testing cabin (3), an installation slide rail (60) is arranged at the top of the testing instrument body (6), an advancing and retreating device (61) is slidably mounted in the installation slide rail (60), a clamping groove (62) is formed in the top of the advancing and retreating device (61), a testing sample (63) is fixedly clamped in the clamping groove (62), a stand (64) is fixedly connected to the right side of the inner bottom wall of the installation slide rail (60), and a balance plate (65) is fixedly connected to the top end of the stand (64), the top fixedly connected with U type heating ring (66) of balance plate (65), and install glowing filament body (67) through the screw on U type heating ring (66), install thermocouple (68) through the screw on glowing filament body (67).

2. The glow wire ignition test apparatus of claim 1, wherein: install master controller (7) and display mechanism (8) on experimental machine case (2), and display mechanism (8) are located the top of master controller (7), master controller (7) comprise temperature sensor, adjustable resistance button, timing device and timing button, temperature sensor and thermocouple (68) coupling connection, the glowing filament body (67) is established ties there is adjustable resistance, display mechanism (8) are including time display face and temperature display face.

3. The glow wire ignition test apparatus of claim 2, wherein: the test chamber is characterized in that a suction fan (9) is installed at the top of the test chamber (3), the top of the suction fan (9) is communicated with a smoke exhaust pipe (10), the other end of the smoke exhaust pipe (10) is communicated with a gas purification cylinder (11), the gas purification cylinder (11) is installed at the top of the test case (2), and a fan button is further installed on the main controller (7).

4. The glow wire ignition test apparatus of claim 1, wherein: the balance plate (65) top is installed positioning pulley (12), the right side fixedly connected with high temperature resistant steel rope (13) of advancing and retreating device (61), and the other end of high temperature resistant steel rope (13) runs through positioning pulley (12) and fixedly connected with couple (14), it has pulling force weight (15) to hang to lean on couple (14).

5. The glow wire ignition test apparatus of claim 4, wherein: the right side fixed mounting at tester body (6) top has electric telescopic handle (16), and the top fixedly connected with of electric telescopic handle (16) holds puts dish (17), and the bottom of tensile weight (15) contacts with the top of holding.

6. The glow wire ignition test apparatus of claim 1, wherein: the front surface of the advancing and retreating device (61) is movably provided with a flame ruler (19) through a positioning pin (18).