CN110873779A

CN110873779A - Ignition test device

Info

Publication number: CN110873779A
Application number: CN201811024610.XA
Authority: CN
Inventors: 刘宏伟; 秦海兵; 龚伟; 俞渊; 刘岗
Original assignee: China International Marine Containers Group Co Ltd; Zhangjiagang CIMC Sanctum Cryogenic Equipment Co Ltd; CIMC Enric Investment Holdings Shenzhen Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; Zhangjiagang CIMC Sanctum Cryogenic Equipment Co Ltd; CIMC Enric Investment Holdings Shenzhen Co Ltd
Priority date: 2018-09-04
Filing date: 2018-09-04
Publication date: 2020-03-10

Abstract

The invention provides an ignition test device. The ignition test device comprises a test container and a glow wire. The test container is of a sealed and closed structure. The test container is provided with a vacuumizing interface used for being connected with a vacuumizing device and an inflating interface used for being connected with a medium introducing device. The glowing filament is accommodated in the test container, is fixedly arranged in the test container, and is electrified and heated for igniting a test sample. The ignition test device provides a test environment of pure medium gas. When the tested sample is ignited, the risks of explosion, deflagration and the like can not occur, and the safety is improved.

Description

Ignition test device

Technical Field

The invention relates to the field of test equipment, in particular to an ignition test device.

Background

The samples were tested for compatibility with the medium, in particular oxygen compatibility. At present, most of testing instruments adopt a method of directly exposing a sample to air in an unsealed space and then passing a medium through the sample. However, if the introduced medium is oxygen, and the sample to be tested is incompatible with oxygen, the test environment is not in a pure oxygen state, when the sample to be tested is ignited, a combustion phenomenon occurs in the space in the instrument, and risks such as explosion and deflagration may occur, so that the reliability is not high.

Disclosure of Invention

The invention aims to provide an ignition test device with high safety.

An ignition test apparatus comprising:

the test container is of a sealed and closed structure, and is provided with a vacuumizing interface used for being connected with a vacuumizing device and an inflating interface used for being connected with a medium introducing device; and

the glowing filament accept in the test container, the glowing filament is fixed to be located in the test container, glowing filament ohmic heating is used for lighting test sample.

In one embodiment, the test container comprises a cylinder body, and a front end enclosure and a rear end enclosure which are arranged at two ends of the cylinder body, wherein the front end enclosure and the rear end enclosure are respectively connected with two ports of the cylinder body in a sealing manner.

In one embodiment, the test container is provided with an observation hole, a transparent cover is arranged on the observation hole, and the observation hole is sealed by the transparent cover through a clamping hoop.

In one embodiment, the device further comprises a trolley contained in the test container, the trolley is slidably arranged at the bottom of the test container, and a clamp used for clamping the test sample is arranged on the trolley.

In one embodiment, one end of the trolley is provided with a traction rope, one end of the traction rope is connected with the trolley, the other end of the traction rope is connected with a falling object, the bottom of the test container is provided with a fixed pulley, the fixed pulley is located in the advancing direction of the trolley, the traction wire bypasses the fixed pulley, and the falling object falls to drive the trolley to advance.

In one embodiment, the test device further comprises a bottom plate, the bottom plate is fixedly arranged at the bottom of the test container, the glow wire is arranged on the bottom plate through an upright post, the trolley can slide on the bottom plate, and the trolley moves to enable the test sample to be in contact with the glow wire.

In one embodiment, the test container further comprises a power supply device, the power supply device is electrically connected with the glow wire through a cable, the test container is provided with a wire through hole, and the cable penetrates through the wire through hole.

In one embodiment, the cable and the test container are sealed with a connector therebetween.

In one embodiment, the power supply device includes a transformer for electrically connecting to a power source, the transformer being used to control the magnitude of the output current.

In one embodiment, the power supply device further includes a transformer and a display, the transformer is connected to the display, and the display displays the output current.

In one embodiment, the power supply device further comprises a distribution box.

In one embodiment, the vacuum pumping port and the air charging port are both provided with vacuum flanges.

The ignition test device provides a closed test container, the test container is vacuumized through the vacuumizing device, and then the test container is filled with medium gas. The ignition test device provides a test environment of pure medium gas. Therefore, when the test environment is in a pure medium gas state, the risk of explosion, deflagration and the like can not occur when the tested sample is ignited, and the safety is improved.

Drawings

Fig. 1 is a sectional view of an ignition test apparatus of the present embodiment;

fig. 2 is an enlarged view of a portion of the ignition test apparatus shown in fig. 1.

The reference numerals are explained below: 10. igniting the test device; 11. a test vessel; 111. vacuumizing the interface; 112. an inflation interface; 113. a barrel; 114. a front end enclosure; 115. sealing the end; 116. an observation hole; 117. a transparent cover; 118. a flange; 119. clamping a hoop; 12. a glow wire; 121. a column; 13. a trolley; 131. a clamp; 132. a hauling rope; 133. dropping an object; 134. a fixed pulley; 135. a wheel; 14. a base plate; 15. a power supply device; 151. a cable; 152. a distribution box; 153. a transformer; 154. a transformer; 155. a display; 156. a voltage regulator; 16. a fixed seat; 17. a track; 171. and a guide groove.

Detailed Description

While this invention is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the invention not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides an ignition test device 10, and the ignition test device 10 is used for testing the compatibility between a tested sample and a medium gas.

The ignition test apparatus 10 of the present embodiment includes a test container 11, a glow wire 12, a carriage 13, a base plate 14, and a power supply device 15. The sealed test container 11 is filled with medium gas, the power supply device 15 supplies power to the glow wire to heat the glow wire 12, the tested sample is fixedly arranged on the trolley 13, and the glow wire 12 is ignited on the tested sample through the movement of the trolley 13, so that the compatibility of the tested sample and the medium gas is tested.

The test container 11 is a hermetically closed structure. The test container 11 is provided with a vacuum pumping port 111 for connecting with a vacuum pumping device and an inflation port 112 for connecting with a medium introducing device. First, the sealed test container 11 is evacuated through the vacuum port, and then a dielectric gas is introduced into the test container 11. The medium is not limited to pure oxygen.

The test container 11 includes a cylinder 113, and a front cap 114 and a rear cap 115 provided at both ends of the cylinder 113. The front end enclosure 114 and the rear end enclosure 115 are respectively connected with two ports of the cylinder 113 in a sealing manner. The front seal head 114 and the rear seal head 115 can better bear the pressure on the test container 11, and the test container 11 is prevented from being damaged by overlarge pressure. The cylindrical body 113 has a cylindrical shape. The cylindrical test container 11 requires less material for the same volume, which is cost effective.

Specifically, in the present embodiment, the test container 11 is a cylindrical structure or an elliptical head structure having a good pressure resistance.

The vacuum pumping interface 111 and the air charging interface 112 are both provided with vacuum flanges. The vacuumizing interface 111 and the inflating interface 112 are CF flanges, KF flanges and ISO flanges.

In this embodiment, the KF flange of the inflation interface may be a connection structure such as a stop valve, a check valve, etc. The KF flange of the vacuum-pumping port can be a connecting structure such as a stop valve.

The glow wire 12 is housed in the test vessel 11. The glow wire 12 is fixedly arranged in the test container 11, and the glow wire 12 is electrified and heated for igniting a test sample. The glow wire 12 has a higher melting point, so that the phenomenon that the glow wire 12 is damaged and the test is influenced due to overhigh temperature of the glow wire 12 is avoided.

It is understood that the glow wire 12 may be a platinum wire, a stainless steel wire, or the like.

The test container 11 is provided with a viewing hole 116. A transparent cover 117 is provided over the viewing aperture 116, the transparent cover 117 being clipped onto the test vessel 11 and sealing the viewing aperture 116. The test process in the test container 11 can be observed through the transparent cover 117. Specifically, in the present embodiment, the test container 11 is provided with a flange 118 at the observation hole 116. The transparent cover 117 is hermetically connected to the flange 118 by a sealing ring. The transparent cover 117 is provided with a clamp 119, and the transparent cover 117 is fixed with a flange 118 through the clamp 119 in a clamp sealing manner.

It is understood that the transparent cover 117 may be a plexiglas cover. The sealing ring is a rubber ring or a rubber strip. The observation hole 116 may be provided at another position of the test container 11 as long as the test process can be observed.

The ignition test apparatus 10 of the present embodiment further includes a cart 13 housed in the test container 11. The cart 13 is provided with a clamp 131 for clamping a test sample. The clamp 131 may be a clamping plate or a clamping clip, etc. The trolley 13 is slidably disposed at the bottom of the test container 11.

Specifically, the ignition test device 10 further includes a bottom plate 14 and a fixing base 16. The bottom plate 14 is fixed in the cylinder 113 by the fixing base 16. The glow wire 12 is mounted on the base plate 14 via a vertical column 121. The vertical columns 121 fix the glow wire 12 to a predetermined height. Referring also to fig. 2, the cart 13 is slidable on a base plate 14. Specifically, the bottom plate 14 is provided with a rail 17 on which the trolley 13 slides. The rail 17 is provided with a guide groove 171 for receiving the wheel 135 of the trolley 13. The wheels 135 of the cart 13 are partially received in the guide slots 171 and move along the guide slots 171. The guide groove 171 can ensure the movement locus of the trolley 13 and avoid the movement deviation of the trolley 13.

The carriage 13 moves to bring the test specimen into contact with the glow wire 12. The trolley 13 is provided with a clamping plate for fixing a sample to be tested. The trolley 13 is automatically drawn to the glow wire 12 by the falling object.

One end of the trolley 13 is provided with a pulling rope 132, one end of the pulling rope 132 is connected with the trolley 13, and the other end is connected with a pendant 133. A fixed pulley 134 is arranged at the bottom of the test container 11 and in the advancing direction of the trolley 13, the pull wire 132 passes around the fixed pulley 134, and the falling object 133 falls to drive the trolley 13 to advance.

After the glow wire 12 ignites the sample to be measured, the front end of the sample to be measured burns, the weight of the sample to be measured becomes lighter and lighter, the friction between the trolley 13 and the bottom plate 14 is reduced, and the pendant 133 drives the trolley 13 to move close to the glow wire 12. Therefore, during the whole test process, the trolley 13 is close to the glow wire 12 along with the combustion of the tested sample, so that the tested sample is kept in contact with the glow wire 12, and the test can be completely finished.

It is understood that in other embodiments, the movement of the cart 13 may be driven by a motor or the like. The fixing mode of fixing the tested sample by the trolley 13 is not limited to clamp plate fixing, and can also be fixed by bolts, buckles and the like.

The ignition test apparatus 10 further comprises a power supply 15. The power supply device 15 is electrically connected with the glow wire 12 through a cable 151, the test container 11 is provided with a wire through hole, and the cable 151 penetrates through the wire through hole. The seal between the cable 151 and the test container 11 seals the wire passage hole through the connector. Specifically, the connector can be an aviation connector or the like.

The power supply device 15 further includes a distribution box 152, a transformer 153, a transformer 154, and a display 155. The distribution box 152 is used for accommodating a transformer 153, a mutual inductor 154, a display 155 and a voltage regulator 156. The distribution box 152 integrates the power supply unit 15, and isolates the transformer 153, the transformer 154, the display 155, and the voltage regulator 156 from the outside.

The transformer 153 is used for electrical connection with a power source, and the transformer 153 is used for controlling an output current. The transformer 153 sets the output current range to 0-200A. The transformer 153 regulates the magnitude of the current by rotating the voltage regulator 156.

The transformer 154 is connected to a display 155, and the display 155 displays the output current. The display 155 sets a display range of 0 to 300A.

The power supply device 15 is supplied with 220v ac power to the transformer 153 and the display 154, the voltage regulator 156 controls the output current, and the transformer 154 is provided on the output cable, and the transformer 154 is connected to the display 155 to display the output current. Each part is integrated in the switch board, and the integrated level is high.

When the ignition test device 10 of the present embodiment is used, a sample to be tested is fixed by a clamp plate on the cart 13, the test container 11 is sealed, and then the test container 11 is evacuated. When the vacuum state is reached, medium gas is introduced into the test container 11, so that the test container 11 reaches a pure medium test environment. And then the transformer 153 is adjusted until the output current is about 130A, the glow wire 12 reaches a glowing state, the glow wire 12 ignites the sample to be tested, and the test state is observed from the observation hole 116.

The ignition test device 10 of the present embodiment can also be used for testing in a non-pure medium state, and under the working conditions of the rest tested samples, mixed medium gas, no medium gas and the like, only the proportion of the medium gas of the inflation pipeline at the inflation interface 112 needs to be adjusted.

The above-described ignition test apparatus 10 has at least the following advantages over conventional ignition test apparatuses:

first, when the ignition test apparatus 10 of the present embodiment is used, the test container 11 is first brought into a vacuum state, and then the medium gas is introduced, so that the test environment can be brought into a pure medium gas state. The test environment of the scheme can reach a pure medium state, so that risks such as explosion and deflagration cannot occur, and the test container 11 is designed to be of a structure capable of bearing internal pressure, so that the test container is safe and reliable.

In addition, when the ignition test apparatus 10 according to the present embodiment is used, if the sample to be tested is incompatible with the medium and harmful gas is generated, the test container 11 cannot be discharged, and the harmful gas can be pumped to a specific place to be treated, thereby satisfying the requirement of environmental protection.

Secondly, the power supply system of the ignition test apparatus 10 of the present embodiment is simple and easy to operate, and only the transformer needs to be adjusted, so that the use and maintenance are simple and convenient. The power supply system part and the test container 11 part are high in integration level and high in modularization degree.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An ignition test apparatus, comprising:

2. The ignition test device of claim 1, wherein the test container comprises a cylinder body, and a front end enclosure and a rear end enclosure which are arranged at two ends of the cylinder body, and the front end enclosure and the rear end enclosure are respectively connected with two ports of the cylinder body in a sealing manner.

3. The ignition test device of claim 1, wherein the test container is provided with a viewing hole, a transparent cover is arranged on the viewing hole, and the transparent cover seals the viewing hole through a clamping hoop.

4. The ignition test device of claim 1, further comprising a cart contained within the test container, the cart being slidably disposed at the bottom of the test container, the cart having a clamp for holding the test sample.

5. The ignition test device of claim 4, wherein a traction rope is arranged at one end of the trolley, one end of the traction rope is connected with the trolley, a falling object is connected at the other end of the traction rope, a fixed pulley is arranged at the bottom of the test container and is positioned in the advancing direction of the trolley, the traction rope bypasses the fixed pulley, and the falling object falls to drive the trolley to advance.

6. The ignition test apparatus of claim 1, further comprising a base plate, wherein said base plate is fixedly disposed at the bottom of said test vessel, said glow wire is disposed on said base plate via a post, said carriage is slidable on said base plate, and said carriage moves to contact said test specimen with said glow wire.

7. The ignition test device of claim 1, further comprising a power supply device electrically connected to the glow wire via a cable, wherein the test vessel is provided with a wire hole through which the cable passes.

8. The ignition test apparatus of claim 7, wherein the cable and the test container are sealed from each other by a connector to seal the wire passage hole.

9. The ignition test apparatus of claim 7, wherein the power supply comprises a transformer for electrical connection to a power source, the transformer being configured to control the magnitude of the output current.

10. The ignition test device of claim 7, wherein the power supply further comprises a transformer and a display, the transformer is connected with the display, and the display displays the output current.

11. An ignition test apparatus as claimed in claim 7, wherein the power supply means further comprises a power distribution box.

12. The ignition test apparatus of claim 1, wherein the vacuum port and the gas charging port are each provided with a vacuum flange.