Stability detection device

Abstract

The utility model provides a stability detection device which comprises a thermal stability test tube for placing a sample, a heating device for heating the thermal stability test tube, a hose communicated with the thermal stability test tube, a collecting bottle communicated with the hose, and a pH meter arranged in the collecting bottle, and distilled water for collecting gas is placed in the collecting bottle. According to the stability detection device disclosed by the utility model, hydrogen chloride gas is collected by using distilled water in the collection bottle, so that leakage of the hydrogen chloride gas can be avoided, personal health and safety are protected, the pH value is detected by the pH meter, manual visual monitoring is replaced, the accuracy and reliability of a measurement result are improved, and meanwhile, measurement data can be recorded and analyzed; and subsequent material performance improvement is facilitated.

Description

Technical Field

[0001] The utility model relates to a stability detection device. Background Art

[0002] Thermal stability testing is a key component in evaluating the thermal stability of wire and cable materials in high-temperature environments. It is primarily applicable to the insulation and sheathing of polyvinyl chloride (PVC) flexible cables. The test method measures the time it takes for the sample to begin decomposing at 200°C to assess its thermal stability. Utilizing the acidic nature of hydrogen chloride gas, the sample releases hydrogen chloride gas upon decomposition at high temperatures. Current methods measure the thermal stability of the sample by observing the time it takes for pH test paper to change color.

[0003] Existing testing methods have the following drawbacks: ① As the estimated time is about to expire, the test strips must be replaced every 5-10 minutes, and the user must constantly monitor the test strips for color changes, which is time-consuming and labor-intensive. ② Visually observing the color change of the test strips has a time lag, and the time it takes to observe the color change will be different from the actual color change time. ③ Although the amount of hydrogen chloride gas released is small, long-term exposure to it is harmful to human health.

[0004] In view of this, it is necessary to improve the existing stability detection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a stability detection device to solve the problems of the existing stability detection method being time-consuming and labor-intensive, having low accuracy and causing harm to the human body.

[0006] To achieve the above-mentioned purpose, the utility model provides a stability detection device, which includes a thermally stable test tube for placing a sample, a heating device for heating the thermally stable test tube, a hose connected to the thermally stable test tube, a collecting bottle connected to the hose, and a pH meter arranged in the collecting bottle, wherein distilled water for collecting gas is placed in the collecting bottle.

[0007] As a further improvement of the present invention, the stability detection device further includes a stirring device for stirring the liquid in the collection bottle.

[0008] As a further improvement of the present invention, the stirring device is a magnetic stirrer arranged below the collecting bottle.

[0009] As a further improvement of the present invention, the thermal stability detection device further includes a vent pipe connected to the hose and an air pump for introducing air into the vent pipe.

[0010] As a further improvement of the present invention, the thermal stability detection device further includes a control unit electrically connected to the pH meter to receive collected data.

[0011] As a further improvement of the present invention, the thermal stability detection device further includes a display unit electrically connected to the control unit.

[0012] As a further improvement of the present invention, an exhaust pipe is provided on the collecting bottle.

[0013] As a further improvement of the present invention, the hose is a rubber hose.

[0014] As a further improvement of the present invention, the heating device is provided with a plurality of heating tanks for accommodating the thermally stable test tubes.

[0015] The beneficial effects of the utility model are as follows: the stability detection device of the utility model collects hydrogen chloride gas with distilled water in a collection bottle, thereby preventing leakage of hydrogen chloride gas and protecting personal health and safety; the pH value is detected by a pH meter, replacing manual visual monitoring, thereby improving the accuracy and reliability of the measurement results; and the measurement data can be recorded and analyzed at the same time, facilitating subsequent material performance improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the stability detection device of the present utility model;

[0018] Figure 2 It is a side structural diagram of the stability detection device of the present utility model. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 2 As shown, the stability detection device 100 of the present invention includes a thermal stability test tube 1 for placing a sample, a heating device 2 for heating the thermal stability test tube 1, a hose 3 connected to the thermal stability test tube 1, a vent tube 4 connected to the hose 3, an air pump for supplying air into the vent tube 4, a collecting bottle 6 connected to the hose 3, a pH meter 7 arranged in the collecting bottle 6, a stirring device 8 for stirring the liquid in the collecting bottle 6, a control unit 9 electrically connected to the pH meter 7 to receive collected data, and a display unit electrically connected to the control unit 9.

[0023] Thermal stability testing is a key component in evaluating the thermal stability of wire and cable materials in high-temperature environments. It is primarily applicable to the insulation and jacketing of polyvinyl chloride (PVC) flexible cables. The test method measures the time it takes for a sample to begin decomposing at 200°C. Utilizing the principle that decomposition produces acidic hydrogen chloride gas, the sample releases hydrogen chloride gas upon decomposition at high temperatures, providing the thermal stability time. The core of the test is determining the timing of hydrogen chloride gas generation.

[0024] The thermally stable test tube 1 is used to place samples and has good heat conduction effect.

[0025] The heating device 2 is provided with a plurality of heating tanks 21 for accommodating the thermal stability test tubes 1. Each heating tank 21 can accommodate one thermal stability test tube 1, thereby achieving the effect of carrying out multiple groups of thermal stability tests simultaneously.

[0026] The hose 3 is a rubber hose and needs to have a certain heat resistance to prevent damage caused by high temperature and avoid problems such as melting and decomposition that affect the test results. The hose 3 can discharge the gas generated in the thermal stability test tube 1 into the collection bottle 6.

[0027] The air pump and the vent pipe 4 are used to introduce external air so as to allow all the air in the heat-stable test tube 1 to pass into the collection bottle 6.

[0028] Distilled water is placed inside the collection bottle 6 to collect the gas. Hydrogen chloride gas can fully dissolve in the distilled water and prevent leakage. The connection between the hose 3 and the collection bottle 6 allows direct flow of the distilled water. Therefore, in this embodiment, there are two preferred methods: one is to insert the hose 3 from the top of the collection bottle 6 and extend it into the bottom of the collection bottle 6, allowing the introduced gas to enter directly into the distilled water. The other is to connect the hose 3 to the bottom of the collection bottle 6. In this solution, the collection bottle 6 is preferably positioned lower than the heat-stable test tube 1 to prevent the distilled water from flowing back into the heat-stable test tube 1.

[0029] If hydrogen chloride gas is generated, it dissolves in distilled water to form a solution. The stirring device 8 is a magnetic stirrer located below the collection bottle 6 to improve dissolution efficiency and prevent excessive hydrogen chloride gas from escaping. The collection bottle 6 is provided with an exhaust pipe 61 to discharge gas that is insoluble in distilled water.

[0030] The pH meter 7 can detect the pH value of the solution in the collection bottle 6 in real time, the control unit 9 collects data in real time, and the display unit displays the data in real time. The control unit 9 and the display unit can be the same device, having both control and display functions, or they can be independent devices. When the thermal stability test begins, the pH meter 7 begins testing. When the pH meter 7 displays a value, the corresponding test time and pH value changes are automatically recorded to form a curve graph. Based on the curve graph, the relationship between the thermal stability performance of the material and time can be obtained.

[0031] The working process of the stability detection device 100 of the present invention is as follows: after turning on the heating device 2 and reaching the test set temperature, the thermal stability test tube 1 containing the sample is placed in the heating tank 21 of the heating device 2, and the gas is transmitted to the collection bottle 6 with distilled water through the hose 3. The pH value of the mixture of gas and distilled water is detected by the pH meter 7. The control unit 9 and the display unit record and display the relationship diagram between the pH value and time in real time. According to the relationship diagram, the relationship between the thermal stability performance of the material and time can be obtained, the stability of the quality of polyvinyl chloride products can be controlled, and automatic monitoring of the thermal stability test can be realized.

[0032] The stability detection device 100 of the present invention collects hydrogen chloride gas with distilled water in the collection bottle 6, thereby preventing leakage of hydrogen chloride gas and protecting personal health and safety. The pH value is detected by the pH meter 7, replacing manual visual monitoring, thereby improving the accuracy and reliability of the measurement results. At the same time, the measurement data can be recorded and analyzed to facilitate subsequent material performance improvement.

[0033] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A stability detection device, characterized in that: The stability detection device includes a heat-stable test tube for placing a sample, a heating device for heating the heat-stable test tube, a hose connected to the heat-stable test tube, a collection bottle connected to the hose, a pH meter arranged in the collection bottle, and distilled water for collecting gas is placed in the collection bottle.

2. The stability detection device according to claim 1, characterized in that: The stability detection device also includes a stirring device for stirring the liquid in the collection bottle.

3. The stability detection device according to claim 2, characterized in that: The stirring device is a magnetic stirrer arranged below the collecting bottle.

4. The stability detection device according to claim 1, characterized in that: The thermal stability detection device also includes a vent pipe connected to the hose and an air pump for introducing air into the vent pipe.

5. The stability detection device according to claim 1, characterized in that: The thermal stability detection device also includes a control unit electrically connected to the pH meter to receive collected data.

6. The stability detection device according to claim 5, characterized in that: The thermal stability detection device further includes a display unit electrically connected to the control unit.

7. The stability detection device according to claim 1, characterized in that: The collecting bottle is provided with an exhaust pipe.

8. The stability detection device according to claim 1, characterized in that: The hose is a rubber hose.

9. The stability detection device according to claim 1, characterized in that: The heating device is provided with a plurality of heating tanks for accommodating the thermally stable test tubes.

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