Testing arrangement of self-heating food heating package release heat and gas volume
阅读说明：本技术 一种自热食品发热包释放热量与气体量的测试装置 (Testing arrangement of self-heating food heating package release heat and gas volume ) 是由 章明洪 房朋 牛彦超 张小沁 商照聪 殷炯 王高俊 吴昊 于 2020-06-24 设计创作，主要内容包括：本发明涉及一种自热食品发热包释放热量与气体量的测试装置,包括：量热机构：包括量热容器、反应瓶和定量漏斗,其中,反应瓶内放置有待测样品,在量热容器内还设置有测量反应瓶产热量的量热组件,定量漏斗内装有水,并置于反应瓶上方,该定量漏斗的出液口还连接反应瓶；集气机构：包括导气管、水槽、固定支架和集气瓶,固定支架安装在水槽底部,导气管的一端连接反应瓶,另一端上安装有排气组件,集气瓶内装满水,且在测量时,集气瓶以倒置状态与排气组件对接,并用于收集反应瓶内反应生成的气体。与现有技术相比,本发明可同时测定自热食品发热包所释放的热量和气体量,为评价发热包的质量和安全性提供技术支撑,填补了该领域的技术空白。(The invention relates to a testing device for the quantity of heat and gas released by a self-heating food heating bag, which comprises: a heat metering mechanism: the quantitative reaction device comprises a calorimetric container, a reaction bottle and a quantitative funnel, wherein a sample to be measured is placed in the reaction bottle, a calorimetric component for measuring the heat production quantity of the reaction bottle is also arranged in the calorimetric container, water is filled in the quantitative funnel and is placed above the reaction bottle, and a liquid outlet of the quantitative funnel is also connected with the reaction bottle; gas collection mechanism: including air duct, basin, fixed bolster and gas collection bottle, the fixed bolster is installed in the basin bottom, and the reaction flask is connected to the one end of air duct, installs exhaust subassembly on the other end, and the gas collection bottle is filled with water, and when measuring, the gas collection bottle docks with exhaust subassembly with inversion state to be used for collecting the gas that reaction produced in the reaction flask. Compared with the prior art, the method can simultaneously measure the heat and the gas released by the self-heating food heating bag, provides technical support for evaluating the quality and the safety of the heating bag, and fills the technical blank in the field.)
1. A testing device for testing the amount of heat and gas released from a heating bag of a self-heating food, comprising:
a heat metering mechanism: the quantitative reaction device comprises a calorimetric container, a reaction bottle with a sealed bottle cap and a quantitative funnel, wherein a sample to be measured is placed in the reaction bottle and is placed in the calorimetric container, a calorimetric component for measuring the heat production quantity of the reaction bottle is also arranged in the calorimetric container, water is filled in the quantitative funnel and is placed above the reaction bottle, and a liquid outlet of the quantitative funnel is also connected with the reaction bottle;
gas collection mechanism: the gas collecting device comprises a gas guide tube, a water tank, a fixing support and a gas collecting bottle, wherein the fixing support is installed at the bottom of the water tank and is immersed by water contained in the water tank, one end of the gas guide tube is connected with the reaction bottle, an exhaust assembly is installed at the other end of the gas guide tube, the exhaust assembly is fixedly arranged on the fixing support, the gas collecting bottle is filled with water, and when the gas collecting bottle is used for measurement, the gas collecting bottle is in butt joint with the exhaust assembly in an inverted state and used for collecting gas generated by reaction in the reaction bottle.
2. The apparatus as claimed in claim 1, wherein the container has a heat-insulating cavity sealed with heat-insulating foam, the reaction flask is disposed in the heat-insulating cavity and contains water for submerging the reaction flask, the calorimetric assembly is in contact with the water in the heat-insulating cavity and can measure the temperature of the water, and the variation of the temperature of the water in the heat-insulating cavity is detected by the calorimetric assembly during operation, so as to calculate the heat output of the sample to be tested.
3. The apparatus of claim 2, wherein the heat measuring assembly is a thermometer with a measuring end immersed in the water level inside the heat insulating cavity.
4. The apparatus as claimed in claim 2, wherein an agitator is disposed in the heat-insulating cavity.
5. The apparatus as claimed in claim 1, wherein a gas return tube is disposed between the reaction bottle and the quantitative hopper.
6. The device for testing the amount of heat and gas released from a self-heating food heating pack according to claim 1, wherein the exhaust assembly comprises an exhaust pipe, a conical valve core, an exhaust valve rod and an exhaust spring, wherein one end of the exhaust pipe is connected with the air duct, the other end of the exhaust pipe is provided with the exhaust valve rod which moves back and forth along the inner cavity of the exhaust pipe, the conical valve core is arranged in the inner cavity of the exhaust pipe and is fixedly connected with the exhaust valve rod, one end of the exhaust spring is connected with one end of the exhaust valve rod extending out of the exhaust pipe, the other end of the exhaust spring is connected with the end part of the exhaust pipe, and in a normal state, the exhaust spring drives the exhaust valve rod to extend outwards, so that the conical valve core blocks the exhaust port; when the gas collecting bottle is placed on the exhaust assembly in an inverted mode, the exhaust valve rod is pressed into the exhaust pipe, the conical valve core is made to leave the exhaust port, and then the exhaust pipe is opened.
7. The device of claim 6, wherein the end of the exhaust pipe near the exhaust spring is in the shape of a stepped truncated cone and comprises an exhaust section and a valve core section, the exhaust section and the valve core section are communicated with each other and have a smaller diameter, the exhaust port is formed at the junction of the exhaust section and the valve core section, the exhaust valve rod is arranged in the exhaust section and moves back and forth along the interior of the exhaust section, the valve core section is further connected with the air guide pipe, and the conical valve core is arranged in the valve core section.
8. The device for testing the amount of heat and gas released from the self-heating food heating pack according to claim 1, wherein the gas collecting bottle comprises a bottle body with volume scales and a gas collecting valve arranged at the mouth of the bottle body, the gas collecting valve comprises a valve body fixedly arranged at the mouth of the bottle and partially extending into the bottle body, one outward side of the valve body is open, a valve core capable of moving back and forth along the inner wall of the valve body is further arranged in the valve body, a gas collecting spring is further arranged between the valve core and the valve body, and a side groove communicated with the bottle body is further formed in the side wall of the valve body; when the gas-collecting spring is in a normal extension state, the valve core completely shields the side open groove, when the gas-collecting bottle is in butt joint with the exhaust component, the valve core is propped against and moves towards the bottom end of the valve body, so that the gas-collecting spring is synchronously compressed, and at the moment, the side open groove can be exposed and the bottle body is communicated with the outside.
9. The apparatus of claim 8, wherein the gutter has an overflow port on the side thereof such that the water level in the gutter will flood the entire exhaust assembly and the side slots in the gas collection bottle will always be below the water level in the gutter when the gas collection bottle is inverted over the exhaust assembly.
10. The apparatus as claimed in claim 8, wherein the valve body is cylindrical and has a screw hole formed on its outer wall for fixedly connecting with the gas collecting bottle.
Technical Field
The invention belongs to the technical field of testing devices, and relates to a testing device for the quantity of heat and gas released by a self-heating food heating bag.
Background
As a novel popular fast food, the self-heating food has the advantages of high heating speed, convenient eating and the like, is popular among many consumers and merchants, combines with the innovation of taste modeling, and becomes an instant fast food which is loved by people.
According to investigation and data inquiry, the self-heating food consists of food materials and a heating bag, the main components of the self-heating food heating bag in the market at present comprise aluminum powder, calcium oxide, iron powder, magnesium powder and the like, and a large amount of heat and gas mainly containing hydrogen are released after water is added in the self-heating food heating bag. The heat release amount and the continuous heat release time are important indexes for evaluating the quality of the heating bag, and the food materials can be heated to the required temperature by the released heat; meanwhile, the released hydrogen is a dangerous flammable gas, the explosion limit is 4% -75.6%, the ignition energy is very low, when the self-heating food is used under some closed or semi-closed conditions, such as in a car or a tent, the risk of combustion and explosion exists, and researches show that a common heating bag can generate about forty liters of hydrogen, and the more hydrogen generated by the heating bag, the more dangerous the self-heating food is.
Therefore, the heat and hydrogen released by the heating bag are main indexes for evaluating the quality and safety of the heating bag, and no relevant standard of the self-heating food heating bag product exists at present, and no effective method for testing the heat and hydrogen generated by the heating bag exists. The patent CN 108007968A only proposes the measurement of the total heat energy of the heat-generating pack, and does not disclose the measurement of the gas amount.
Disclosure of Invention
The invention aims to provide a device for testing the quantity of heat and gas released by a self-heating food heating bag, which is used for detecting the quantity of heat and gas released by the self-heating food heating bag in use and further evaluating the quality and the safety of the heating bag.
The purpose of the invention can be realized by the following technical scheme:
a test device for testing the amount of heat and gas released from a hot food heating pack, comprising:
a heat metering mechanism: the quantitative reaction device comprises a calorimetric container, a reaction bottle with a sealed bottle cap and a quantitative funnel, wherein a sample to be measured is placed in the reaction bottle and is placed in the calorimetric container, a calorimetric component for measuring the heat production quantity of the reaction bottle is also arranged in the calorimetric container, water is filled in the quantitative funnel and is placed above the reaction bottle, and a liquid outlet of the quantitative funnel is also connected with the reaction bottle;
gas collection mechanism: the gas collecting device comprises a gas guide tube, a water tank, a fixing support and a gas collecting bottle, wherein the fixing support is installed at the bottom of the water tank and is immersed by water contained in the water tank, one end of the gas guide tube is connected with the reaction bottle, an exhaust assembly is installed at the other end of the gas guide tube, the exhaust assembly is fixedly arranged on the fixing support, the gas collecting bottle is filled with water, and when the gas collecting bottle is used for measurement, the gas collecting bottle is in butt joint with the exhaust assembly in an inverted state and used for collecting gas generated by reaction in the reaction bottle.
Furthermore, the calorimetric container is provided with an adiabatic cavity formed by sealing adiabatic foam, the reaction bottle is arranged in the adiabatic cavity, water submerging the reaction bottle is contained in the adiabatic cavity, the calorimetric component is in contact with the water in the adiabatic cavity and can measure the temperature of the water, and during work, the temperature change in the adiabatic cavity is detected through the calorimetric component, so that the heat release of the sample to be measured can be calculated.
Furthermore, the calorimetric component is a thermometer with a measuring end immersed under the water level inside the heat insulation cavity.
Furthermore, a stirrer is arranged in the heat insulation cavity.
Furthermore, an air return pipe is arranged between the reaction bottle and the quantitative funnel.
Furthermore, the exhaust assembly comprises an exhaust pipe, a conical valve core, an exhaust valve rod and an exhaust spring, wherein one end of the exhaust pipe is connected with the air guide pipe, the other end of the exhaust pipe is provided with the exhaust valve rod which moves back and forth along the inner cavity of the exhaust pipe, the conical valve core is arranged in the inner cavity of the exhaust pipe and is fixedly connected with the exhaust valve rod, one end of the exhaust spring is connected with one end of the exhaust valve rod extending out of the exhaust pipe, the other end of the exhaust spring is connected with the end part of the exhaust pipe, and in a normal state, the exhaust spring drives the exhaust valve rod to extend outwards, so that the conical valve core blocks an exhaust port of the; when the gas collecting bottle is placed on the exhaust assembly in an inverted mode, the exhaust valve rod is pressed into the exhaust pipe, the conical valve core is made to leave the exhaust port, and then the exhaust pipe is opened.
Furthermore, the end part of the exhaust pipe close to the exhaust spring is in a step round table shape and comprises an exhaust section and a valve core section, wherein the exhaust section and the valve core section are communicated with each other, the diameter of the exhaust section is smaller, the diameter of the valve core section is larger, the exhaust section is internally provided with an exhaust valve rod which moves back and forth along the inside of the exhaust valve rod, the valve core section is also connected with the air guide pipe, and the valve core section is internally provided with the conical valve core.
Furthermore, the gas collecting bottle comprises a bottle body with volume scales and a gas collecting valve arranged at the bottle mouth of the bottle body, the gas collecting valve comprises a valve body fixedly arranged at the bottle mouth and partially extending into the bottle body, one outward side of the valve body is provided with an opening, a valve core capable of moving back and forth along the inner wall of the valve body is further arranged in the valve body, a gas collecting spring is further arranged between the valve core and the valve body, and a side groove communicated with the bottle body is further processed on the side wall of the valve body; when the gas-collecting spring is in a normal extension state, the valve core completely shields the side open groove, when the gas-collecting bottle is in butt joint with the exhaust component, the valve core is propped against and moves towards the bottom end of the valve body, so that the gas-collecting spring is synchronously compressed, and at the moment, the side open groove can be exposed and the bottle body is communicated with the outside.
Furthermore, the side part of the water tank is also provided with an overflow port, so that the water level in the water tank submerges the whole exhaust assembly, and the side open groove on the gas collecting bottle is always positioned below the liquid level of the water tank when the gas collecting bottle is inverted on the exhaust assembly.
Furthermore, the valve body is cylindrical, and the outer wall of the valve body is provided with a screw port fixedly connected with the gas collecting bottle.
Compared with the prior art, the invention has the following advantages:
(1) the method can simultaneously measure the heat and the gas released by the self-heating food heating bag, provides technical support for evaluating the quality and the safety of the heating bag, and fills the technical blank in the field.
(2) The special gas collecting valve on the gas collecting bottle and the matching design of the exhaust assembly enable the whole device to be capable of automatically stopping gas collection, operability of the device is greatly improved, and the gas collecting bottle is convenient and fast to replace.
(3) The gas collection mechanism adopts a drainage method for collection, can ensure complete gas collection, and effectively avoids the error of results caused by gas loss and the like.
(4) And index measurement is carried out in a simulation experiment mode, so that the experimental data are consistent with the actual situation.
Drawings
FIG. 1 is a schematic structural diagram of a testing apparatus according to the present invention;
FIG. 2 is a schematic view of the structure at the gas collecting valve;
FIG. 3 is a schematic view of the structure at the exhaust assembly;
the notation in the figure is:
1-calorimetric container, 2-sample to be tested, 3-adiabatic foam, 4-reaction bottle, 5-thermometer, 6-stirrer, 7-quantitative funnel, 8-air return pipe, 9-air guide pipe, 10-water, 11-air collection bottle, 12-overflow port, 13-air discharge pipe, 14-water tank, 15-tripod, 16-air collection spring, 17-side open groove, 18-valve core, 19-screw, 20-air collection valve, 21-air discharge spring, 22-air discharge valve rod and 23-conical valve core.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the following embodiments or examples, unless a functional structure or a component is specifically described, it means a conventional component or a conventional structure in the art to achieve a corresponding function.
The invention provides a testing device for testing the quantity of heat and gas released by a self-heating food heating bag, the structure of which is shown in figure 1 and comprises:
a heat metering mechanism: the quantitative calorimeter comprises a calorimetric container 1, a reaction bottle 4 provided with a sealed bottle cap and a quantitative funnel 7, wherein a sample 2 to be tested is placed in the reaction bottle 4 and is placed in the calorimetric container 1, a calorimetric component for measuring the heat production quantity of the reaction bottle 4 is also arranged in the calorimetric container 1, water is filled in the quantitative funnel 7 and is placed above the reaction bottle 4, a liquid outlet of the quantitative funnel 7 is also connected with the reaction bottle 4, and a valve is also arranged at a liquid outlet of the quantitative funnel 7;
gas collection mechanism: the gas collecting device comprises a gas guide tube 9, a water tank 14, a fixing support (namely a tripod 15) and a
In a specific embodiment of the present invention, the calorimetric container 1 has an adiabatic cavity sealed by an adiabatic foam 3, the reaction flask 4 is arranged in the adiabatic cavity, water submerging the reaction flask 4 is contained in the adiabatic cavity, the calorimetric component contacts the water in the adiabatic cavity and can measure the temperature of the water, and the exothermic quantity of the sample 2 to be measured can be calculated by detecting the change of the water temperature in the adiabatic cavity through the calorimetric component during operation.
In a more specific embodiment, the calorimetric assembly is a thermometer 5 with a measuring end immersed in the water level inside the insulated cavity, and the mercury bubble of the thermometer 5 is generally guaranteed to be located at 1/2 below the water level and not attached to the wall when measuring.
In a more specific embodiment, the heat-insulating cavity is further provided with a stirrer 6, so that the temperature of water in the calorimetric container 1 is uniform, and preferably, the height of a stirring blade of the stirrer 6 is lower than that of the calorimetric component (i.e. the thermometer 5) so as to avoid damaging the calorimetric component during stirring.
In a specific embodiment of the present invention, a gas return pipe 8 is further disposed between the reaction flask 4 and the quantitative funnel 7, and the gas return pipe 8 is connected above the water level inside the quantitative funnel 7, so that a balanced gas pressure pipeline can be constructed between the quantitative funnel 7 and the reaction flask 4 to ensure that the water in the quantitative funnel 7 can be smoothly discharged into the reaction flask 4.
In a specific embodiment of the present invention, the quantitative funnel 7 is provided with scales and the end thereof is provided with a sealing cover design, so that the sealing requirement during measurement can be met by the detachable sealing cover, and water can be supplemented as required at any time.
In a specific embodiment of the present invention, please refer to fig. 3 again, the exhaust assembly includes an exhaust pipe 13, a conical valve plug 2318, an exhaust valve rod 22 and an exhaust spring 21, wherein one end of the exhaust pipe 13 is connected to the air duct 9, the other end is provided with the exhaust valve rod 22 moving back and forth along the inner cavity thereof, the conical valve plug 2318 is disposed in the inner cavity of the exhaust pipe 13 and is fixedly connected to the exhaust valve rod 22, one end of the exhaust spring 21 is connected to one end of the exhaust valve rod 22 extending out of the exhaust pipe 13, the other end is connected to the end of the exhaust pipe 13, and in a normal state, the exhaust spring 21 drives the exhaust valve rod 22 to extend out, and the conical valve plug 2318 seals the exhaust port of the exhaust pipe 13; when the
In a more specific embodiment, the end of the exhaust pipe 13 close to the exhaust spring 21 is in a stepped circular truncated cone shape, and includes an exhaust section with a smaller diameter and a
In a specific embodiment of the present invention, please refer to fig. 2 again, the
In a more specific embodiment, the side of the gutter 14 is further provided with an overflow 12, so that the water level in the gutter 14 submerges the entire exhaust assembly, and the
In a more specific embodiment, the valve body is cylindrical, and a
The above embodiments may be implemented individually, or in any combination of two or more.
The above embodiments will now be described in more detail with reference to the following examples.
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