Detection alarm device

Abstract

The utility model discloses a kind of detection alarm devices, including connecting box, detection mechanism, propulsion mechanism and positioning connection component, wherein, detection mechanism is set on connecting box, positioning connection component is set on connecting box, propulsion mechanism includes detection box, air intake assembly and buffer cladding block, wherein, detection box is set on connecting box, and set away from positioning connection component, air intake assembly is set on detection box, buffer cladding block is set inside detection box. Thus, using active air convection sampling and built-in sensor detection structure, makes convection air pass through buffer cladding block, realizes fast response and stable sampling, effectively improve the anti environmental interference ability and detection precision.

Description

Technical Field

[0001] This utility model relates to the technical field of gas monitoring and alarm, and in particular to a detection and alarm device. Background Technology

[0002] A detection and alarm device is a safety equipment that integrates sensing, judgment, and warning. Its core function is to continuously or intermittently monitor specific target physical or chemical quantities (such as gas concentration, temperature, pressure, smoke, etc.). When the monitored quantity exceeds a preset safety threshold, the device can automatically trigger alarm signals in the form of sound, light, or electricity.

[0003] In related technologies, existing detection and alarm devices for pipeline gases mainly employ diffusion-type and pump-suction-type structures. The diffusion-type structure directly exposes the sensor probe to the monitoring point, relying on natural gas diffusion for detection. While simple, this structure is greatly affected by environmental wind force and direction, easily leading to slow response or missed alarms. Simultaneously, the probe is susceptible to interference from rain, snow, dust, and other contaminants, causing measurement inaccuracies and false alarms. Furthermore, the installation location is extremely demanding. The pump-suction structure uses a sampling pump and long pipelines to extract gas from multiple points and deliver it to a central analyzer. While this structure offers higher accuracy, the system is complex and costly, and the long sampling path results in extremely slow response times, failing to meet the requirements for rapid alarms. Therefore, these devices suffer from low reliability, slow response, and poor environmental adaptability in practical applications. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a detection and alarm device that adopts active air convection sampling and built-in sensor detection structure, so that the convective air passes through the buffer cover block, realizing rapid response and stable sampling, and effectively improving the ability to resist environmental interference and detection accuracy.

[0006] To achieve the above objectives, this utility model proposes a detection alarm device, including a connecting box, a detection mechanism, a propulsion mechanism, and a positioning connection component. The detection mechanism is disposed on the connecting box, the positioning connection component is disposed on the connecting box, and the propulsion mechanism includes a detection box, an air intake component, and a buffer covering block. The detection box is disposed on the connecting box and located away from the positioning connection component. The air intake component is disposed on the detection box, and the buffer covering block is disposed inside the detection box.

[0007] In addition, the detection and alarm device proposed above according to this utility model may also have the following additional technical features: Specifically, the air intake assembly includes an air intake pipe and two symmetrically arranged axial flow fans. The air intake pipe is disposed on the detection box and located below the detection box, and is vertically connected to the detection box. The two symmetrically arranged axial flow fans are disposed at both ends of the air intake pipe.

[0008] Specifically, the detection mechanism includes a sensor, a control component, and an integrated audible and visual alarm. The control component is located inside the connection box, the sensor is located inside the buffer cover block and connected to the control component, and the integrated audible and visual alarm is located on the connection box and connected to the control component.

[0009] Specifically, the control component includes two symmetrically arranged batteries, a relay, and a PCB control board. The two symmetrically arranged batteries are located on both sides of the inside of the connection box, the PCB control board is located inside the connection box and between the two symmetrically arranged batteries, and the relay is located on the PCB control board.

[0010] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The detection and alarm device of this utility model actively collects gas through the propulsion component, forming a stable directional airflow in the air inlet pipe, realizing rapid response and efficient sampling. After the airflow is smoothly processed by the buffer covering block in the detection box, it contacts the sensor, creating a stable detection environment, significantly improving the anti-environmental interference capability and detection accuracy, eliminating missed alarms and false alarms, and the device has flexible installation angle and strong environmental adaptability.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the detection and alarm device of this utility model; Figure 2 This is a schematic diagram of the positioning connection component structure of the detection and alarm device of this utility model; Figure 3 This is a schematic diagram of the propulsion mechanism of the detection and alarm device of this utility model; Figure 4 This is a schematic diagram of the detection mechanism of the detection alarm device of this utility model.

[0013] As shown in the figure: 1. Connecting box; 2. Detection mechanism; 21. Sensor; 22. Control component; 221. Battery; 222. Relay; 223. PCB control board; 23. Integrated sound and light alarm; 3. Propulsion mechanism; 31. Detection box; 32. Air intake component; 321. Air intake pipe; 322. Axial flow fan; 33. Buffer cover block; 4. Positioning connection component. Detailed Implementation

[0014] The 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 denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0015] The detection and alarm device of this utility model embodiment will be described below with reference to the accompanying drawings.

[0016] like Figures 1-4 As shown, the detection alarm device of this utility model embodiment may include a connection box 1, a detection mechanism 2, a propulsion mechanism 3, and a positioning connection component 4.

[0017] The detection mechanism 2 is mounted on the connection box 1, and the positioning connection component 4 is mounted on the connection box 1.

[0018] It should be noted that the connecting box 1 described in this embodiment is stably connected between the detection mechanism 2, the propulsion mechanism 3 and the positioning connecting component 4, and the positioning connecting component 4 enables the connecting box 1 to be installed on the pipeline at any angle. The positioning connecting component 4 adopts two sets of clamp structures.

[0019] The propulsion mechanism 3 includes a detection box 31, an air intake assembly 32, and a buffer cover block 33.

[0020] The detection box 31 is disposed on the connecting box 1 and is located away from the positioning connecting component 4. The air intake component 32 is disposed on the detection box 31, and the buffer covering block 33 is disposed inside the detection box 31.

[0021] It should be noted that the detection box 31 described in the above embodiment is a tubular structure with openings at both ends. The air intake component 32 delivers gas into the interior of the detection box 31 at one end and allows the gas to pass through the buffer cover block 33. The buffer cover block 33 is made of polyurethane sponge with a medium density (30-45 KG / m³) and a pore size of 20-40 PPI, which can provide good gas diffusion and particle filtration effect while ensuring low airflow resistance.

[0022] Specifically, in practical applications, relevant personnel fix the device on the pipeline using the positioning connection component 4. The installation angle is determined according to the actual construction environment. It can be located below the pipeline, parallel to the pipeline, or above the pipeline. In the initial state, the buffer cover block 33 is located in the upper inner part of the detection box 31, while the sensor 21 is located inside the buffer cover block 33.

[0023] In use, the device is connected to an external power bus to power the PCB control board 223, the two axial fans 322 and the battery 221, causing the two axial fans 322 to rotate continuously and push the airflow in opposite directions. The air rises in the middle of the air intake pipe 321 and enters the detection box 31, where it comes into contact with the buffer cover block 33. After contacting the buffer cover block 33, the gas gradually permeates, reducing the airflow velocity and diffusing within the buffer cover block 33. This allows the gas to contact the sensor 21 in a stable environment, improving detection quality and anti-interference effect.

[0024] Meanwhile, after the sensor 21 detects combustible gas, it transmits a low-voltage control signal to the PCB control board 223. Current flows through the coil of the relay 222. After the coil is energized, it generates a magnetic field, which attracts the mechanical contacts inside that were originally disconnected. The main power supply connects the external integrated sound and light alarm 23, causing it to sound an alarm. Batteries 221 are installed on both sides for storing power.

[0025] In one embodiment of this utility model, such as Figure 2 and Figure 4 As shown, the intake assembly 32 includes an intake pipe 321 and two symmetrically arranged axial fans 322.

[0026] The intake pipe 321 is located on the detection box 31 and below it, and is vertically connected to the detection box 31. Two symmetrically arranged axial flow fans 322 are located at both ends of the intake pipe 321.

[0027] It should be noted that the air intake pipe 321 described in this embodiment is located below the detection box 31. For gases with a density greater than air that sink, the sinking gas is sampled and transported by two symmetrically arranged axial flow fans 322.

[0028] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the detection mechanism 2 includes a sensor 21, a control component 22, and an integrated audible and visual alarm 23.

[0029] The control component 22 is located inside the connection box 1, the sensor 21 is located inside the buffer cover block 33 and is connected to the control component 22, and the integrated sound and light alarm 23 is located on the connection box 1 and is connected to the control component 22.

[0030] It should be noted that the sensor 21 proposed in the above embodiment is used to monitor combustible gases (such as natural gas, methane, hydrogen, propane). When the detection element (platinum wire coil coated with catalyst) in the sensor 21 encounters combustible gas, it will undergo flameless combustion on its surface, causing the temperature of the platinum wire to rise and the resistance to change. The gas concentration is calculated by measuring the resistance change. The integrated sound and light alarm 23 is powered by 24V voltage.

[0031] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the control component 22 includes two symmetrically arranged batteries 221, a relay 222, and a PCB control board 223.

[0032] Two symmetrically arranged batteries 221 are located on the inside of the connection box 1 on both sides. The PCB control board 223 is located inside the connection box 1 and between the two symmetrically arranged batteries 221. The relay 222 is located on the PCB control board 223.

[0033] It should be noted that the two symmetrically arranged batteries 221 proposed in the above embodiment are used to power the device after a power outage, and the relay 222 is used to control the triggering of the integrated sound and light alarm 23. At the same time, the relay 222 includes a drive circuit, which consists of a transistor (such as SS8050), a freewheeling diode (such as 1N4148), and a base resistor. The function of this circuit is to use the small current signal of the MCU to control a switch that can pass a larger current, and to provide a discharge circuit for the reverse electromotive force generated by the coil to protect the MCU.

[0034] In summary, the detection and alarm device of this utility model adopts an active air convection sampling and built-in sensor detection structure, which allows convective air to pass through the buffer cover block, achieving rapid response and stable sampling, and effectively improving the ability to resist environmental interference and detection accuracy.

[0035] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A detection and alarm device, characterized in that, It includes a connection box, a detection mechanism, a propulsion mechanism, and a positioning connection assembly, among which, The detection mechanism is mounted on the connection box; The positioning connection component is disposed on the connection box; The propulsion mechanism includes a detection box, an air intake assembly, and a buffer cover block, wherein, The detection box is disposed on the connection box and is located away from the positioning connection component; The air intake assembly is mounted on the detection box; The buffer cover block is disposed inside the detection box.

2. The detection and alarm device according to claim 1, characterized in that, The air intake assembly includes an intake pipe and two symmetrically arranged axial fans, wherein, The air intake pipe is disposed on the detection box, located below the detection box, and is vertically connected to the detection box; Two symmetrically arranged axial fans are located at both ends of the air intake pipe.

3. The detection and alarm device according to claim 1, characterized in that, The detection mechanism includes a sensor, a control component, and an integrated audible and visual alarm, wherein... The control component is located inside the connection box; The sensor is disposed inside the buffer cover block and is connected to the control component; The integrated sound and light alarm is mounted on the connection box and connected to the control component.

4. The detection and alarm device according to claim 3, characterized in that, The control component includes two symmetrically arranged batteries, relays, and a PCB control board, wherein... The two symmetrically arranged batteries are located on both sides of the interior of the connector box; The PCB control board is located inside the connection box and between the two symmetrically arranged batteries; The relay is mounted on the PCB control board.

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