Thermal overload detection device and thermal overload detection method

Abstract

The present invention relates to the technical field of detection devices, and provides a thermal overload detection device and a thermal overload detection method. The thermal overload detection device includes a detection chamber with a containing space, a compression device arranged in the detection chamber, and a detection device for detecting the number of water droplets. The detection chamber has an inlet and an outlet, and the detection device is arranged at the outlet. The compression device is used to change the volume of the containing space, and the object to be detected is placed in the containing space. The object to be detected is placed in the detection chamber. Once the object to be detected in the detection chamber is overheated, the ions released when it is heated and damaged are spread in the containing space through Brownian motion or convection, and pyrolyzed ions are used as condensation nuclei for forming water droplets, and the volume of the containing space is changed by the compression device, so as to control the diameter of the water droplets formed by each pyrolyzed ion. Finally, the number of water droplets in the containing space is calculated by the detection device to judge the heating state of the object to be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a thermal overload detection device and a thermal overload detection method. Background Art

[0002] In the fields of electricity, it is necessary to effectively prevent accidents caused by overheating of materials when the temperature exceeds the limit of the material's basic physical and chemical properties. Detecting thermal overload of materials can predict its hidden dangers and the development trend of thermal runaway in advance.

[0003] At present, the use of existing thermal overload detection devices is limited by the site and construction difficulty, and the detection process itself is triggered, that is, the detection process is more passive. Summary of the invention

[0004] The purpose of the present invention is to provide a thermal overload detection device, aiming to solve the problem that the existing thermal overload detection device is trigger-type and relatively passive during the detection process.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present application provides a thermal overload detection device, comprising a detection chamber having a accommodating space, a compression device arranged in the detection chamber, and a detection device for detecting the number of water droplets, wherein the detection chamber has an inlet and an outlet, the detection device is arranged at the outlet, the compression device is used to change the volume of the accommodating space, and an object to be detected is placed in the accommodating space.

[0007] Beneficial effects of the present invention: The thermal overload detection device provided by the present invention has the following working process: an object to be detected is placed in a detection chamber; once the object to be detected in the detection chamber is overheated, the pyroions released by the heat are dispersed in the accommodating space through Brownian motion or convection, and the pyroions are used as condensation nuclei to form water droplets, and the volume of the accommodating space is changed by a compression device, so as to control the diameter of the water droplets formed by each pyroion. Finally, the number of water droplets in the accommodating space is calculated by the detection device to judge the heating state of the object to be detected.

[0008] In one embodiment, the detection device includes a power supply, a plurality of detection elements connected in parallel to the power supply, and a detection circuit electrically connected to each of the detection elements, wherein the detection elements are arranged side by side, and the detection elements include a first detection arm electrically connected to the power supply and a second detection arm electrically connected to the power supply, and a gap is formed between the first detection arm and the second detection arm for water droplets to pass through.

[0009] In one embodiment, the first detection arm comprises a first evaporation beam, and an anode contact is provided on a side of the first evaporation beam facing the first detection arm.

[0010] In one embodiment, a plurality of liquid guiding grooves are formed on the first evaporation beam.

[0011] In one embodiment, the second detection arm comprises a second evaporation beam, and the second evaporation beam is provided with a cathode contact arranged opposite to the anode contact.

[0012] In one embodiment, a plurality of liquid guiding grooves are provided on the second evaporation beam.

[0013] In one embodiment, the distance between the anode contact and the cathode contact is 5 nm to 30 nm.

[0014] In one embodiment, the thermal overheat detection device comprises an air inlet channel, the air outlet of the air inlet channel is connected to the inlet, the air inlet of the air inlet channel is provided with a first control valve, and the inlet is provided with a check valve.

[0015] In one embodiment, the thermal overheat detection device comprises an air outlet channel, an air inlet of the air outlet channel is connected to the outlet, and a second control valve is disposed at the air outlet of the air outlet channel.

[0016] In a second aspect, the present application further provides a thermal overload detection method, using the thermal overload detection device described above, and the specific steps are as follows:

[0017] Placing the object to be detected in the detection chamber of the thermal overload detection device, closing the entrance of the detection chamber, and changing the capacity of the detection chamber by a compression device;

[0018] Detect the number of water drops in the current detection chamber by using a detection device;

[0019] The number of water drops is used to determine whether the object is in an overheated state.

[0020] Beneficial effects of the present invention: The thermal overload detection method provided by the present invention has low energy consumption and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a thermal overload detection device provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a detection device for a thermal overload detection device provided by an embodiment of the present invention;

[0024] Figure 3 A flow chart of a thermal overload detection method provided by an embodiment of the present invention.

[0025] Among them, the reference numerals in the figure are:

[0026] Detection chamber 10, compression device 20, detection device 30, inlet 10a, outlet 10b, power supply 31, detection element 32, detection circuit 33, first detection arm 321, second detection arm 322, gap 30a, first evaporation beam 3211, anode contact 3212, liquid guide groove 30b, second evaporation beam 3221, cathode contact 3222, air inlet channel 41, first control valve 42, check valve 43, air outlet channel 51, second control valve 52. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Please refer to Figure 1 The thermal overload detection device provided by the present application includes a detection chamber 10 having a containing space, a compression device 20 arranged in the detection chamber 10, and a detection device 30 for detecting the number of water droplets. The detection chamber 10 has an inlet 10a and an outlet 10b. The detection device 30 is arranged at the outlet 10b. The compression device 20 is used to change the volume of the containing space, and the object to be detected is placed in the containing space. When performing the detection, the inlet 10a is in a closed state. The compression device 20 can change the volume of the containing space, for example, to increase or decrease the volume of the containing space relative to the initial state, so as to change the pressure in the containing space, thereby adjusting the particle size of the water droplets.

[0032] The working principle of the thermal overload detection device of the present application is: when a substance is heated beyond the steady-state limit, the outer electrons of the smallest unit atom or molecule that constitutes the substance escape to become ions, which are pyrolytic ions. The pyrolytic ions are also released in the space due to the thermal effect, and these pyrolytic ions serve as condensation nuclei for water droplets. If the substance continues to be heated, more water droplets will be formed by the pyrolytic ions. By calculating the number of water droplets passing through the detection device 30 per unit time, it is possible to determine whether the object in the space is overheated.

[0033] The thermal overload detection device provided by the present invention has the following working process: the object to be detected is placed in the detection chamber 10. Once the object to be detected in the detection chamber 10 is overheated, the pyro-released ions released by the heat are spread in the accommodating space through Brownian motion or convection, and the pyro-released ions are used as condensation nuclei to form water droplets. In addition, the volume of the accommodating space is changed by the compression device 20, so as to control the diameter of the water droplets formed by each pyro-released ion. Finally, the number of water droplets in the accommodating space is calculated by the detection device 30 to judge the heating state of the object to be detected. For example, the particle size range of the pyro-released ions is between 0.1 nanometers and 6 nanometers. And, the particle size of the water droplets formed by the pyro-released ions can be controlled within a certain range by the compression device 20. That is, the thermal overload detection device of the present application adopts process detection during the detection process, and the detection process is more active.

[0034] Please refer to Figure 1 and Figure 2In one embodiment, the detection device 30 includes a power supply 31, a plurality of detection members 32 connected in parallel to the power supply 31, and a detection circuit 33 electrically connected to each detection member 32. Each detection member 32 is arranged side by side, and the detection member 32 includes a first detection arm 321 electrically connected to the power supply 31 and a second detection arm 322 electrically connected to the power supply 31. A gap 30a for water droplets to pass through is formed between the first detection arm 321 and the second detection arm 322. It can be understood that the arrangement direction of each detection member 32 is the same as the direction of the outlet 10b of the detection chamber 10, that is, the water droplets can pass through the gap 30a to the outside of the detection chamber 10. Specifically, the first detection arm 321, the second detection arm 322 and the detection circuit 33 form a water drop counting circuit. In the undetected state, the water drop counting circuit is in an open circuit state, and when the water droplets pass through the interval, the water drop counting circuit is in a pass state, so as to count.

[0035] Please refer to Figure 2 In one embodiment, the first detection arm 321 includes a first evaporation beam 3211, and an anode contact 3212 is provided on one side of the first evaporation beam 3211 facing the first detection arm 321. It can be understood that there are a large number of water droplets in a Brownian motion state in the detection chamber 10, and the water droplets directly falling on the first evaporation beam 3211 are heated and volatilized to prevent the water droplets from condensing on the first evaporation beam 3211. At the same time, the anode contact 3212 is used to contact the water droplets.

[0036] Please refer to Figure 2 In one embodiment, a plurality of liquid guide grooves 30b are provided on the first evaporation beam 3211. It can be understood that in order to improve the water passing efficiency of the first evaporation beam 3211, the liquid guide grooves 30b are provided on the first evaporation beam 3211. Once the condensed water droplets do not have time to be evaporated, they can quickly leave the first evaporation beam 3211 through the liquid guide grooves 30b.

[0037] Please refer to Figure 2 In one embodiment, the second detection arm 322 includes a second evaporation beam 3221, and the second evaporation beam 3221 is provided with a cathode contact 3222 arranged opposite to the anode contact 3212. It can be understood that there are a large number of water droplets in a Brownian motion state in the detection chamber 10, and the water droplets falling on the second evaporation beam 3221 are heated and volatilized to prevent the water droplets from condensing on the second evaporation beam 3221. At the same time, the cathode contact 3222 is used to contact with the water droplets. When the water droplets pass through the cathode contact 3222 and the anode contact 3212, the water drop counting circuit is in a pass state.

[0038] Please refer to Figure 2In one embodiment, a plurality of liquid guide grooves 30b are provided on the second evaporation beam 3221. Similarly, in order to improve the water passing efficiency of the second evaporation beam 3221, liquid guide grooves 30b are provided on the second evaporation beam 3221. Once the condensed water droplets are too late to be evaporated, they can quickly leave the second evaporation beam 3221 through the liquid guide grooves 30b.

[0039] In one embodiment, the spacing between the anode contact 3212 and the cathode contact 3222 is 5 nm to 30 nm. It can be understood that the spacing between the anode contact 3212 and the cathode contact 3222 is 5 nm, 7 nm, 10 nm, 12 nm, 15 nm, 17 nm, 20 nm, 22 nm, 25 nm, 27 nm, 30 nm, etc., and of course it can also be other non-integer values.

[0040] Please refer to Figure 1 In one embodiment, the thermal overheat detection device includes an air inlet channel 41, the air outlet of the air inlet channel 41 is connected to the inlet 10a, the air inlet of the air inlet channel 41 is provided with a first control valve 42, and the inlet 10a is provided with a check valve 43. It can be understood that air is delivered to the detection chamber 10 through the air inlet channel 41, and the first control valve 42 is used to control the air intake amount in the air inlet channel 41. At the same time, when the detection chamber 10 needs to be closed, the check valve 43 is opened to prevent the air in the detection chamber 10 from being discharged to the outside through the inlet 10a.

[0041] Please refer to Figure 1 Similarly, in one embodiment, the thermal overheating detection device includes an air outlet channel 51, the air inlet of the air outlet channel 51 is connected to the outlet 10b, and the air outlet of the air outlet channel 51 is provided with a second control valve 52. It can be understood that the air in the detection chamber 10 is transported to the outside through the air outlet channel 51, and the second control valve 52 is used to control the air outlet volume in the air outlet channel 51.

[0042] Please refer to Figure 3 The present application also provides a thermal overload detection method, using the above-mentioned thermal overload detection device, the specific steps are as follows:

[0043] Place the object to be detected in the detection chamber 10 of the thermal overload detection device, and close the entrance 10a of the detection chamber 10;

[0044] A closed space is formed in the detection chamber 10 to prevent the detection process from being disturbed.

[0045] The capacity of the detection chamber 10 is changed by the compression device 20; and the number of water drops in the current lower detection chamber 10 is detected by the detection device 30;

[0046] Once the object to be detected is overheated, pyrolytic ions are released in the detection chamber 10 and water droplets are formed. The pressure in the detection chamber 10 is adjusted by the compression device 20 to adjust the particle size of the water droplets, and the detection device 30 is used to calculate the number of water droplets formed.

[0047] The number of water drops is used to determine whether the object is in an overheated state.

[0048] The number of water drops passing through the detection device 30 per unit time can be obtained by simulating the detection object to be in an overheated state, and the number of water drops can be used as a standard value. By comparing the current value with the standard value, it is determined whether the detection object is in an overheated state.

[0049] The thermal overload detection method provided by the present invention has low energy consumption and high detection efficiency.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal overload detection device, characterized in that: The invention comprises a detection chamber having a containing space, a compression device arranged in the detection chamber, and a detection device for detecting the number of water drops, wherein the detection chamber has an inlet and an outlet, the detection device is arranged at the outlet, the compression device is used to change the volume of the containing space, and the object to be detected is placed in the containing space; The detection device comprises a power supply, a plurality of detection elements connected in parallel to the power supply, and a detection circuit electrically connected to each of the detection elements, each of the detection elements is arranged side by side, the detection element comprises a first detection arm electrically connected to the power supply and a second detection arm electrically connected to the power supply, a gap is formed between the first detection arm and the second detection arm for water droplets to pass through, the first detection arm comprises a first evaporation beam, and an anode contact is provided on a side of the first evaporation beam facing the first detection arm; The thermal overload detection device also includes an air inlet channel and an air outlet channel, the air outlet of the air inlet channel is connected to the inlet, the air inlet of the air inlet channel is provided with a first control valve, and the inlet is provided with a check valve; the air inlet of the air outlet channel is connected to the outlet, and the air outlet of the air outlet channel is provided with a second control valve.

2. The thermal overload detection device according to claim 1, characterized in that: A plurality of liquid guiding grooves are formed on the first evaporation beam.

3. The thermal overload detection device according to claim 1, characterized in that: The second detection arm comprises a second evaporation beam, and the second evaporation beam is provided with a cathode contact arranged opposite to the anode contact.

4. The thermal overload detection device according to claim 3, characterized in that: A plurality of liquid guiding grooves are provided on the second evaporation beam.

5. The thermal overload detection device according to claim 3, characterized in that: The distance between the anode contact and the cathode contact is 5nm-30nm.

6. A thermal overload detection method, characterized in that: Using the thermal overload detection device according to any one of claims 1 to 5, the specific steps are as follows: Placing the object to be detected in the detection chamber of the thermal overload detection device and closing the entrance of the detection chamber; Changing the volume of the detection chamber by means of a compression device; and detecting the number of water drops currently in the lower detection chamber by means of a detection device; The number of water drops is used to determine whether the object is in an overheated state.

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