Material level detection and fire early warning device

Abstract

The utility model relates to the field of fire early warning, in particular to a material level detection and fire early warning device which comprises a bin body, the top of the bin body is in a closed shape, a plurality of thermal resistors are embedded in the top of the bin body in the vertical direction, the lengths of the thermal resistors located in the bin body are arranged in an equal difference mode, and the top ends of the thermal resistors are flush. A control assembly is fixed to the top of the bin body, an audible and visual alarm is installed on the side wall of the bin body, and the control assembly comprises a shell and a circuit board installed in the shell. The height of the material level is indirectly calculated by utilizing the heat dissipation rate difference caused by the change of the material level. Compared with a traditional heavy hammer type, radar type or ultrasonic type device, the mechanical friction spark risk (heavy hammer type) and dust interference (radar / ultrasonic type) are avoided, and the detection precision and safety are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of fire early warning, specifically a level detection and fire early warning device. Background Technology

[0002] Level detection in combustible powder silos often employs hammer-type, radar-type, or ultrasonic devices. However, hammer-type devices pose a risk of frictional sparks arising from contact between mechanical parts and combustible dust; radar and ultrasonic devices are susceptible to signal attenuation or scattering interference at high dust concentrations, leading to measurement errors. Furthermore, uneven temperature distribution or localized overheating within the silo can trigger spontaneous combustion, but traditional level detection devices lack temperature monitoring capabilities, making fire early warning difficult.

[0003] Therefore, it is necessary to provide a level detection and fire early warning device to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a level detection and fire early warning device.

[0005] This utility model provides a level detection and fire early warning device, comprising a closed top of a chamber, wherein a plurality of thermal resistors are embedded and installed vertically on the top of the chamber, and the lengths of the thermal resistors within the chamber are arranged at equal intervals, with the tops of the thermal resistors being flush; a control component is fixed on the top of the chamber; and an audible and visual alarm is installed on the side wall of the chamber. The control component includes a housing and a circuit board installed inside the housing, and a central processing module is installed on the circuit board. The audible and visual alarm and the thermal resistors are both connected to the central processing module.

[0006] Preferably, the circuit board is equipped with a communication module, and the central processing module is connected to the terminal through the communication module.

[0007] Preferably, the top of the silo body is provided with a powder silo inlet, and the bottom center of the silo body is provided with a powder silo outlet.

[0008] Preferably, the upper half of the silo body is cylindrical and the lower half is conical.

[0009] Preferably, a solenoid valve is installed at the outlet of the powder silo.

[0010] Multiple resistance temperature detectors (RTDs) of varying lengths are vertically arranged at the top of the silo to monitor the temperature gradient at different heights in real time. Temperature signals are transmitted to a central processing module. Changes in material level lead to differences in the heat dissipation rate across the material-covered area; analyzing the temperature distribution allows for indirect estimation of the material level. An audible and visual alarm is triggered when the local temperature exceeds a preset threshold (e.g., ambient temperature + 20°C) or when there is a sudden change in temperature difference between adjacent RTDs. Historical temperature curves are used to distinguish between normal operational temperature rises (e.g., heat generated by material friction) and abnormal temperature rises (e.g., smoldering).

[0011] Compared with related technologies, the present invention provides the following beneficial effects:

[0012] Improve the accuracy and safety of material level detection

[0013] Innovative detection method: By using multiple equally spaced resistance temperature detectors (RTDs) to monitor the temperature gradient at different heights in real time, the material level is indirectly calculated by utilizing the difference in heat dissipation rate caused by changes in material level. Compared with traditional hammer-type, radar-type, or ultrasonic devices, this method avoids the risk of mechanical friction sparks (hammer-type) and dust interference (radar / ultrasonic), significantly improving detection accuracy and safety.

[0014] Temperature-level dual monitoring: Traditional devices can only detect the material level, while this device analyzes the material level through temperature distribution and simultaneously monitors local overheating or sudden temperature changes, providing dual safety protection.

[0015] Fire early warning function

[0016] Real-time temperature monitoring and threshold alarm: When the local temperature exceeds the preset threshold (such as ambient temperature +20℃) or the temperature difference between adjacent probes changes suddenly, the audible and visual alarm is immediately triggered to achieve early warning of fire.

[0017] Historical temperature curve analysis: By combining historical data, we can distinguish between normal temperature rise (such as frictional heat) and abnormal temperature rise (such as smoldering), avoid false alarms, and improve the accuracy of early warning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] The following are the labels in the diagram: 1. Bin body; 2. RTD (Resistor for Thermal Analysis); 3. Control components; 4. Audible and visual alarm; 5. Housing; 6. Circuit board; 7. Central processing module; 8. Communication module; 9. Powder bin inlet; 10. Powder bin outlet; 11. Solenoid valve; 12. Terminal. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1A novel level detection and fire early warning device is described. The device mainly comprises a silo 1 with a closed top to ensure the safe storage of powder materials. Several thermal resistors 2 are vertically embedded in the top of the silo 1. These thermal resistors 2 are arranged at equal lengths with their tops flush to accurately monitor temperature changes at different heights. A control assembly 3 is also fixed to the top of the silo 1. This assembly consists of a housing 5 and a circuit board 6 installed inside the housing 5. The circuit board 6 integrates a central processing module 7, responsible for receiving and processing temperature signals from the thermal resistors 2. Audible and visual alarms 4 are installed on the side walls of the silo 1 to issue an alarm when an abnormality is detected.

[0022] Specifically, the RTD 2 probe is electrically connected to the central processing module 7 via a wire, ensuring that the temperature signal can be transmitted to the central processing module 7 in real time and accurately. When the local temperature exceeds a preset threshold (such as ambient temperature + 20°C) or a sudden change occurs in the temperature difference between adjacent RTD 2 probes, the central processing module 7 will immediately trigger the audible and visual alarm 4 to issue an audible and visual alarm, reminding the operator to take timely measures.

[0023] In addition, to enhance the remote monitoring capability of the device, a communication module 8 is also provided on the circuit board 6. The central processing module 7 can connect wirelessly or wiredly with the terminal device 12 (such as a computer, mobile phone, etc.) through the communication module 8, so that operators can remotely monitor the operating status of the powder silo.

[0024] In terms of the structural design of the silo body 1, the top is provided with a powder silo inlet 9 for adding powder; the bottom center is provided with a powder silo outlet 10, and a solenoid valve 11 is installed to control the discharge of powder. The upper part of the silo body 1 is designed as a cylinder, and the lower part is conical. This design helps the powder to flow and be discharged smoothly.

[0025] The device works by vertically arranging multiple resistance temperature detectors (RTDs) of varying lengths at the top of the silo 1 to monitor the temperature gradient at different heights in real time. Since changes in material level lead to differences in the heat dissipation rate across the material-covered area, the material level can be indirectly calculated by analyzing the temperature distribution. Furthermore, by combining historical temperature curves, the device can effectively distinguish between normal operating temperature rises (such as heat generated by material friction) and abnormal temperature rises (such as smoldering), thereby further improving the accuracy of fire early warning.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A level detection and fire early warning device, characterized in that, The top of the compartment (1) is closed. Several thermal resistors (2) are embedded in the top of the compartment (1) along the vertical direction. The lengths of the thermal resistors (2) inside the compartment (1) are arranged in equal intervals. The tops of the thermal resistors (2) are flush. A control component (3) is fixed to the top of the compartment (1). An audible and visual alarm (4) is installed on the side wall of the compartment (1). The control component (3) includes a housing (5) and a circuit board (6) installed inside the housing (5). A central processing module (7) is installed on the circuit board (6). The audible and visual alarm (4) and the thermal resistors (2) are both connected to the central processing module (7).

2. The level detection and fire early warning device according to claim 1, characterized in that, The circuit board (6) is provided with a communication module (8), and the central processing module (7) is connected to the terminal (12) through the communication module (8).

3. The level detection and fire early warning device according to claim 1, characterized in that, The top of the silo body (1) is provided with a powder silo inlet (9), and the bottom center of the silo body (1) is provided with a powder silo outlet (10).

4. The level detection and fire early warning device according to claim 1, characterized in that, The upper half of the container (1) is cylindrical, and the lower half of the container (1) is conical.

5. The level detection and fire early warning device according to claim 3, characterized in that, A solenoid valve (11) is installed at the outlet (10) of the powder silo.

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