阅读说明：本技术 一种自热物质实验装置 (Self-heating material experimental device ) 是由 钟焕荣 李树娟 于亮 赵军 范伟检 于 2018-07-16 设计创作，主要内容包括：本发明公开了一种自热物质实验装置,包括具备内腔的箱体和与箱体活动连接的箱盖,箱体中设有放置实验样本的样本放置架,箱体中设有用于检测实验样品温度的物质温度传感器和用于检测实验环境温度的环境温度传感器,物质温度传感器和环境温度传感器均电连接数据记录仪器,箱体中还设有加热空气并驱使空气流动的热风循环系统和第一温度传感器,热风循环系统和第一温度传感器均电连接温度控制器,此热风循环系统可配合第一温度传感器及温度控制器将箱体的内腔中空气加热到设定的温度,并使得箱体内空间温度分布均匀,从而营造一个重现性较好的实验环境,此发明用于易燃固体物质的实验检测领域。(The invention discloses a self-heating material experimental device, which comprises a box body with an inner cavity and a box cover movably connected with the box body, wherein a sample placing frame for placing an experimental sample is arranged in the box body, a material temperature sensor for detecting the temperature of the experimental sample and an environment temperature sensor for detecting the temperature of an experimental environment are arranged in the box body, both the material temperature sensor and the environment temperature sensor are electrically connected with a data recording instrument, a hot air circulating system and a first temperature sensor for heating air and driving the air to flow are also arranged in the box body, both the hot air circulating system and the first temperature sensor are electrically connected with a temperature controller, the hot air circulating system can be matched with the first temperature sensor and the temperature controller to heat the air in the inner cavity of the box body to a set temperature, and the temperature distribution of the space in the, therefore, an experimental environment with better reproducibility is created, and the method is used in the field of experimental detection of combustible solid substances.)

1. A self-heating substance experimental apparatus, characterized in that: including box (1) that possesses the inner chamber and with box (1) swing joint's case lid (2), be equipped with the sample rack of placing the experiment sample in box (1), be equipped with in box (1) and be used for detecting material temperature sensor (3) of experimental sample temperature and be used for detecting environmental temperature's ambient temperature sensor (4), data record instrument (5) is connected to material temperature sensor (3) and ambient temperature sensor (4) equal electricity, still be equipped with heated air and order about the hot air circulation system and first temperature sensor (6) that the air flows in box (1), temperature controller is connected to hot air circulation system and the equal electricity of first temperature sensor (6).

2. The autothermal mass experimental device of claim 1, wherein: the material temperature sensor (3) extends into the inner cavity of the box body (1) from the upper part of the box body and is suspended above the sample placing frame.

3. The autothermal mass experimental device of claim 2, wherein: the environment temperature sensor (4) is stretched into the inner cavity of the box body (1) from the upper portion of the box body and is suspended above the sample placing frame, and the distance between the tail end of the environment temperature sensor (4) and the tail end of the material temperature sensor (3) is 2-8 cm.

4. The autothermal mass experimental device of claim 1, wherein: the hot air circulating system comprises an annular heating pipe (7) arranged on the side wall in the box body (1) and a fan arranged in the heating pipe (7).

5. The autothermal mass experimental device of claim 4, wherein: the hot air circulation box is characterized in that a separation cover (8) covering the outside of the hot air circulation system is further arranged in the box body (1), and a plurality of vent holes are formed in the separation cover (8).

6. The autothermal mass experimental device of claim 5, wherein: the vent holes are arranged at the top edge and the bottom edge of the isolation cover (8).

7. The autothermal mass experimental device of claim 5, wherein: the first temperature sensor (6) extends out of the side wall of the box body provided with the hot air circulating system and penetrates through the isolation cover (8).

8. The autothermal mass experimental device of claim 5, wherein: the sample placing rack comprises a plurality of net-shaped plates (9) which are movably connected with a box body (1) on two sides, a plurality of long-strip-shaped support strips (10) are vertically arranged on the inner side wall of the isolation cover (8) and the relative box body (1), a plurality of clamping grooves are arranged on the support strips (10) along the length direction of the support strips, and two ends of each net-shaped plate (9) are respectively clamped and arranged in the clamping grooves.

9. The autothermal mass experimental device of claim 1, wherein: material temperature sensor (3) and ambient temperature sensor (4) soaking resistance formula temperature sensor, material temperature sensor (3) and ambient temperature sensor (4) all are through cable lug connection data record instrument (5), material temperature sensor (3) and ambient temperature sensor (4) all connect data record instrument (5) through four-wire system thermal resistance mode of connection.

10. The autothermal mass experimental device of claim 9, wherein: the data recording instrument (5) is a paperless recorder.

Technical Field

The invention relates to the field of experimental detection of inflammable solid substances, in particular to a self-heating substance experimental device.

Background

For the dangers of the solid combustible substances with self-heating characteristics in the storage and transportation processes, the dangers are mostly judged by adopting the Chinese national standard GB/T21612-2008 dangerous substance combustible solid self-heating test method. It is mainly based on 100mm³And 25mm³The results of the experiments at temperatures of 140 ℃, 120 ℃ and 100 ℃ respectively classify their risks during storage and transportation. However, the experimental method is only suitable for a small amount of experimental samples to complete the experiment at high temperature, and the whole process of real self-heating is difficult to reflect.

For the simulation experiment of the self-heating process of the solid combustible substance, the key point is that the experimental device can better simulate the environment of the storage and transportation process of the solid combustible substance.

At present, most self-heating experimental devices adopt a constant temperature system with a bottom heating function, and the temperature of a test environment is controlled by utilizing natural temperature rise. The bottom heating naturally heaies up, can't guarantee the experimental environment box, and the temperature of the inside is even, and the difference in temperature is great in the environmental test box.

Disclosure of Invention

The invention aims to provide a self-heating substance experimental device.

The technical scheme adopted by the invention is as follows:

the utility model provides a self-heating material experimental apparatus, including the box that possesses the inner chamber and with box swing joint's case lid, be equipped with the sample rack of placing the experimental sample in the box, be equipped with the material temperature sensor who is used for detecting the experimental sample temperature in the box and be used for detecting the ambient temperature's of experiment ambient temperature's ambient temperature sensor, the equal electric connection data record instrument of material temperature sensor and ambient temperature sensor, still be equipped with heated air in the box and order about hot air circulation system and the first temperature sensor that the air flows, the equal electric connection temperature controller of hot air circulation system and first temperature sensor.

As further improvement of the technical scheme of the invention, the material temperature sensor extends into the inner cavity of the box body from the upper part of the box body and is suspended above the sample placing frame.

The temperature sensor is further improved by the technical scheme that the environment temperature sensor extends into the inner cavity of the box body from the upper part of the box body and is suspended above the sample placing frame, and the distance between the tail end of the environment temperature sensor and the tail end of the material temperature sensor is 2-8 cm.

Further as an improvement of the technical scheme of the invention, the hot air circulating system comprises an annular heating pipe arranged on the side wall in the box body and a fan arranged in the heating pipe.

Further as an improvement of the technical scheme of the invention, the box body is also internally provided with an isolation cover covering the hot air circulating system, and the isolation cover is provided with a plurality of vent holes.

As a further improvement of the technical scheme of the invention, the vent holes are arranged at the top edge and the bottom edge of the isolation cover.

As a further improvement of the technical scheme of the invention, the first temperature sensor extends out of the side wall of the box body provided with the hot air circulating system and penetrates through the isolation cover.

The invention further provides an improvement of the technical scheme, the sample placing frame comprises a plurality of reticular plates, two sides of each reticular plate are movably connected with the box body, a plurality of strip-shaped support strips are vertically arranged on the inner side wall of the isolation cover and the opposite box body, a plurality of clamping grooves are formed in the support strips along the length direction of the support strips, and two ends of each reticular plate are respectively clamped in one clamping groove.

The invention further provides an improvement of the technical scheme, the material temperature sensor and the environment temperature sensor are soaking resistance type temperature sensors, the material temperature sensor and the environment temperature sensor are directly connected with a data recording instrument through cables, and the material temperature sensor and the environment temperature sensor are connected with the data recording instrument through a four-wire heating resistance wiring mode.

As a further improvement of the technical scheme of the invention, the data recording instrument is a paperless recorder.

The invention has the beneficial effects that: this self-heating material experimental apparatus through set up hot air circulating system in the box, can order about the air flow in the heated air, utilizes first temperature sensor cooperation temperature controller can heat the temperature of setting for with air in the inner chamber of box to make the interior space temperature distribution of box even, thereby build the better experimental environment of reproducibility, make the experiment effect more fit actual scene.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the case according to the embodiment of the present invention.

Detailed Description

Referring to fig. 1 to 2, the invention relates to a self-heating material experiment device, which comprises a box body 1 with an inner cavity and a box cover 2 movably connected with the box body 1, wherein a sample placing frame for placing an experiment sample is arranged in the box body 1, a material temperature sensor 3 for detecting the temperature of the experiment sample and an environment temperature sensor 4 for detecting the temperature of an experiment environment are arranged in the box body 1, both the material temperature sensor 3 and the environment temperature sensor 4 are electrically connected with a data recording instrument 5, a hot air circulation system and a first temperature sensor 6 for heating air and driving the air to flow are also arranged in the box body 1, and both the hot air circulation system and the first temperature sensor 6 are electrically connected with a temperature controller.

Specifically, during the experiment, material temperature sensor 3 stretches into the experimental sample to the temperature of real-time supervision experimental sample, ambient temperature sensor 4 has certain distance apart from the experimental sample, and this distance should be within 10cm, can monitor and obtain the temperature data around the comparatively accurate experimental sample.

And set up hot air circulating system in the box 1, can order about the air flow in the heated air, utilize 6 cooperation temperature controller of first temperature sensor can be with the temperature of setting for of air heating in the inner chamber of box 1 to make 1 inner space temperature distribution of box even, thereby build the better experimental environment of a reproducibility, make the experimental effect more fit actual scene.

As a preferred embodiment of the invention, the material temperature sensor 3 extends into the inner cavity of the box body 1 from the upper part of the box body and is suspended above the sample placing frame.

As a preferred embodiment of the invention, the environment temperature sensor 4 extends into the inner cavity of the box body 1 from the upper part of the box body and is suspended above the sample placing rack, and the distance between the tail end of the environment temperature sensor 4 and the tail end of the material temperature sensor 3 is 2-8 cm.

As a preferred embodiment of the present invention, the hot air circulation system includes an annular heating duct 7 provided on a side wall inside the cabinet 1 and a fan provided in the heating duct 7. The hot air around the heating pipe 7 is forced to form hot air with certain pressure by utilizing the rotation of the fan blade, and the hot air is blown into the working chamber. The hot air forms a certain circulation in the working chamber to heat the working chamber to a set temperature. The working chamber heated by the principle has uniform temperature distribution and better experiment reproducibility.

As a preferred embodiment of the present invention, an isolation cover 8 covering the hot air circulation system is further disposed in the box body 1, a plurality of vent holes are disposed on the isolation cover 8, and the isolation cover 8 separates the hot air circulation system from the experimental sample, so as to prevent the experimental sample from being blown away by the fan and directly contacting the heating pipe 7.

As a preferred embodiment of the present invention, vent holes are provided at the top and bottom edges of the shield case 8.

In a preferred embodiment of the present invention, the first temperature sensor 6 extends from the side wall of the housing 1 provided with the hot air circulation system and penetrates the shielding cover 8, and the temperature of the air outside the shielding cover 8 can be directly monitored.

As a preferred embodiment of the invention, the sample placing rack comprises a plurality of reticular plates 9, two sides of each reticular plate are movably connected with the box body 1, a plurality of strip-shaped support strips 10 are vertically arranged on the inner side wall of the isolation cover 8 and the box body 1 opposite to the isolation cover, a plurality of clamping grooves are arranged on the support strips 10 along the length direction of the support strips, two ends of each reticular plate 9 are respectively clamped in one clamping groove, and the reticular plates 9 can be detached and arranged in the clamping grooves at any height on the support strips 10, so that different experimental requirements can be met.

As a preferred embodiment of the invention, the material temperature sensor 3 and the environment temperature sensor 4 are heat resistance type temperature sensors, the material temperature sensor 3 and the environment temperature sensor 4 are both directly connected with the data recording instrument 5 through cables, and the material temperature sensor 3 and the environment temperature sensor 4 are both connected with the data recording instrument 5 through a four-wire heating resistance wiring mode, so that the temperature distortion recorded by the data recording instrument caused by the interference of transmission signals of the temperature sensors can be avoided.

In a preferred embodiment of the present invention, the data recording device 5 is a paperless recorder, and the temperature sensor is directly connected to a dedicated paperless recorder outside the ventilating kitchen, so as to avoid the interference of the test data. The paperless recorder can record data for up to 1 year. The data curve can be directly displayed on the recorder, and the purpose of determining whether the inspection result meets the standard requirements is achieved. Data on the paperless recorder can be conveniently copied to a computer through a USB flash disk, and the computer is matched with special software, so that experimental data can be processed, data curves can be checked, data records and the like can be reserved, and the traceability of experimental results is guaranteed.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.