A centralized control alarm system for manhole doors in confined spaces in the metallurgical industry

Abstract

This utility model discloses a centralized control and alarm system for manhole doors in confined spaces in the metallurgical industry, belonging to the field of alarm system technology. The system includes front-end monitoring equipment, a central control unit, alarm devices, and a central control computer. The system provides real-time and comprehensive monitoring of the status of manhole doors in confined spaces. Status sensors accurately monitor the opening and closing status of the manhole doors, while gas sensors detect the gas composition and concentration within the confined space in real time. This allows for timely detection of safety hazards and centralized alarm activation, improving the safety of confined space operations. The automated monitoring and alarm system reduces the workload and potential oversights of manual inspections. It also features remote alarm functionality, with the alarm devices including both audible and visual alarms connected to the alarm terminal of the central control computer. Alarm information is transmitted to the central control computer via a network, enabling management personnel to monitor the safety status of the confined space anytime, anywhere.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm systems, and specifically relates to a centralized control alarm system for manholes in confined spaces in the metallurgical industry. Background Art

[0002] In the continuous production process of the metallurgical industry, confined space operations are high-risk operations, prone to mass casualty incidents, and run through all production links. There are multiple potential safety hazards such as abnormal oxygen concentration, accumulation of toxic and harmful gases, and leakage of flammable and explosive media in high-risk confined spaces. As an important gateway for personnel to enter and exit, the opening and closing state of the manhole door directly affects the safe operation of equipment and production continuity.

[0003] The traditional manual inspection mode is difficult to adapt to the characteristics of continuous 24-hour operation in metallurgical production, and has inherent defects such as long inspection cycles and lagging responses. Some current monitoring devices on the market can only achieve simple monitoring of the magnetic state of the door, neither can synchronously sense changes in environmental parameters in the space nor have the ability of multi-device linkage alarm, and prominent problems such as many monitoring blind spots and poor warning timeliness are exposed in large-scale applications in the metallurgical industry. In view of the deficiencies of the prior art, the utility model provides a centralized control alarm system for manholes in confined spaces in the metallurgical industry to solve the above problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a centralized control alarm system for manholes in confined spaces in the metallurgical industry, which can real-time monitor the opening and closing states of the manhole door, conduct centralized alarm in a timely manner when abnormal situations occur, improve the safety of confined space operations, and provide reliable safety guarantee for industrial production.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A centralized control alarm system for manholes in confined spaces in the metallurgical industry includes front-end monitoring devices, a central control unit, an alarm device, and a central control computer;

[0006] The front-end monitoring devices include state sensors installed on the manholes of confined spaces and gas sensors arranged inside the confined spaces;

[0007] The state sensors are used to monitor the opening and closing states of the manhole door, and the gas sensors are used to detect the gas components and concentrations inside the confined space;

[0008] The front-end monitoring devices are signal-connected to the central control unit through wireless sensors;

[0009] The central control unit receives and processes sensor data, and the central control unit is connected to the central control computer through a signal receiver;

[0010] The alarm device includes an audible and visual alarm device installed near the confined space and an alarm terminal of the central control computer.

[0011] When the central control unit detects abnormal opening of the manhole door or excessive gas levels, it triggers an audible and visual alarm and an alarm on the central control computer.

[0012] Preferably, the status sensor is a door magnetic sensor, which is fixed at the contact point between the manhole door frame and the door body.

[0013] Preferably, the gas sensor includes at least one of an oxygen concentration sensor, a toxic gas sensor, and a combustible gas sensor, and is installed on the interior wall of a confined space.

[0014] Preferably, the central control unit has a built-in data storage module, which interacts with the central control computer for historical data via an encryption protocol.

[0015] Preferably, the wireless sensor is integrated into the front-end monitoring device and communicates with the central control unit via a wireless network.

[0016] Preferably, the audible and visual alarm device is installed within 5 meters of the manhole door, and the audible and visual alarm device is signal-connected to the central control unit.

[0017] Preferably, the central control unit is equipped with an alarm threshold module, which is used to set the opening time limit of the manhole door and the gas concentration safety threshold.

[0018] Preferably, the system also includes multiple regional central control units, each of which is connected to the central control computer in the main control room via a signal connection.

[0019] This utility model discloses a centralized control alarm system for manhole doors in confined spaces in the metallurgical industry, which has the following beneficial effects:

[0020] This centralized control and alarm system for manholes in confined spaces in the metallurgical industry provides real-time and comprehensive monitoring of the manhole status. Status sensors accurately monitor the opening and closing of the manholes, while gas sensors detect the composition and concentration of gases within the confined space in real time. This allows for timely detection of safety hazards and centralized alarm activation, significantly improving the safety of confined space operations. The automated monitoring and alarm system reduces the workload and potential oversights of manual inspections. It also features remote alarm functionality, including audible and visual alarms installed near the confined space and connected to the alarm terminal of the central control computer. Alarm information is transmitted to the central control computer via the network, allowing management personnel to monitor the safety status of the confined space anytime, anywhere. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is the architecture diagram of the centralized alarm system for manhole doors in confined spaces of the present invention;

[0023] Figure 2 This is the schematic diagram of the signal transmission from the regional central control unit of the present invention to the central control computer.

[0024] In the figure: 1, manhole door; 2, gas sensor; 3, status sensor; 4, audible and visual alarm device; 5, central control unit; 6, wireless sensor; 7, signal receiver; 8, central control computer. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Through the embodiments of this application, by providing a centralized control and alarm system for manhole doors in confined spaces in the metallurgical industry, the problem that the traditional manual inspection mode is difficult to adapt to the characteristics of continuous 24-hour operation in metallurgical production, with inherent defects such as long inspection cycles and lagging responses, is solved. Some current monitoring devices on the market can only achieve simple monitoring of the door magnetic state, neither can synchronously sense changes in environmental parameters in the space nor have the ability of multi-device linkage alarm.

[0027] To better understand the above technical solutions, the following will elaborate on the above technical solutions in combination with the accompanying drawings of the specification and specific implementation manners.

[0028] Embodiment 1: The embodiments of the present invention disclose a centralized control and alarm system for manhole doors in confined spaces in the metallurgical industry. As shown in the attached Figure 1-2 figure, it includes front-end monitoring devices, a central control unit 5, an alarm device, and a central control computer 8;

[0029] The front-end monitoring devices include a status sensor 3 installed on the manhole door 1 of the confined space and a gas sensor 2 arranged inside the confined space;

[0030] Status sensor 3 is used to monitor the opening and closing status of manhole door 1, and gas sensor 2 is used to detect the gas composition and concentration in the confined space. Status sensor 3 can monitor whether manhole door 1 is opened or closed in real time, providing key information for subsequent judgment of whether personnel have entered the confined space. It effectively solves the problem that traditional manual inspection cannot monitor the status of manhole door 1 in real time, and avoids the situation where the abnormal opening of manhole door 1 is not detected.

[0031] Gas sensor 2 includes at least one of an oxygen concentration sensor, a toxic gas concentration sensor, and a combustible gas concentration sensor. Installed on the interior wall of a confined space, it can detect the gas composition and concentration within the confined space in real time. This enables timely detection of safety hazards such as abnormal oxygen concentrations, accumulation of toxic and harmful gases, and leakage of flammable and explosive media. It overcomes the shortcomings of existing monitoring devices that cannot simultaneously sense changes in environmental parameters within the space, providing more comprehensive data support for ensuring personnel safety and production continuity.

[0032] The front-end monitoring device is connected to the central control unit 5 via wireless sensor 6;

[0033] The central control unit 5 receives and processes sensor data, and the central control unit 5 is connected to the central control computer 8 through the signal receiver 7.

[0034] The signal receiver 7 serves as a bridge between the central control unit 5 and the central control computer 8. It can reliably receive data signals sent by the central control unit 5 and accurately transmit them to the central control computer 8, ensuring the reliability of data transmission and enabling managers to view various monitoring data and alarm information of the confined space in a timely manner on the central control computer 8.

[0035] The central control unit 5 receives data transmitted from the front-end monitoring equipment via wireless sensors 6 and performs in-depth analysis and processing. The central control unit 5 has a built-in data storage module capable of storing a large amount of historical data and interacts with the central control computer 8 through an encryption protocol to ensure data security. By setting an alarm threshold module, the opening duration limit of the manhole door 1 and the gas concentration safety threshold can be flexibly set according to actual needs. When the detected data exceeds the set threshold, the audible and visual alarm device 4 and the central control computer 8 are triggered in a timely manner.

[0036] When the central control unit 5 detects abnormal opening of the manhole door 1 or excessive gas levels, it triggers the audible and visual alarm device 4 and the central control computer 8. The central control unit 5 enables centralized management and intelligent analysis of monitoring data, improving the timeliness and accuracy of early warnings, and facilitating subsequent inquiries and summaries of the safety status of confined space operations.

[0037] The wireless sensor 6 is integrated into the front-end monitoring device and communicates with the central control unit 5 through a wireless network, realizing wireless signal transmission between the front-end monitoring device and the central control unit. This avoids the cumbersome wiring, improves the system's flexibility and scalability, and adapts to the complex and ever-changing production environment of the metallurgical industry. Compared with traditional wired transmission methods, it reduces installation costs and maintenance difficulty.

[0038] The alarm system includes an audible and visual alarm device 4 installed near the confined space and an alarm terminal of the central control computer 8; the audible and visual alarm device 4 is installed within 5 meters of the manhole door 1 and is connected to the central control unit 5.

[0039] When the central control unit 5 determines that there is an abnormal situation, it can quickly alert on-site personnel through audible and visual alarms, enabling them to promptly detect the danger and take corresponding measures to reduce accident losses, thus making up for the shortcomings of untimely on-site alarms in existing technologies.

[0040] The central control computer 8 alarm terminal receives alarm information through the network, enabling remote monitoring. This allows managers to promptly grasp the safety status of confined spaces regardless of their location, facilitating timely decision-making and preventing safety accidents.

[0041] Status sensor 3 is a door magnetic sensor, and status sensor 3 is fixed at the contact point between the door frame and the door body of manhole door 1.

[0042] The central control unit 5 is equipped with an alarm threshold module, which is used to set the opening time limit of the manhole door 1 and the gas concentration safety threshold.

[0043] The system also includes multiple regional central control units 5, each of which is connected to the central control computer 8 in the main control room via signals.

[0044] This centralized control and alarm system enables real-time and comprehensive monitoring of the status of manhole doors in confined spaces, promptly identifying safety hazards and triggering centralized alarms, significantly improving the safety of confined space operations. Automated monitoring and alarms reduce the workload and potential oversights of manual inspections, improving safety management efficiency. Furthermore, the remote alarm function allows managers to monitor the safety status of confined spaces anytime, anywhere, facilitating timely decision-making and preventing accidents.

[0045] The operation steps of the centralized control alarm system are as follows: install front-end monitoring equipment, including status sensor 3 and gas sensor 2, on each confined space manhole door 1, and fix the status sensor 3 at the contact point between the manhole door frame and the door body, and install the gas sensor 2 on the inner wall of the confined space.

[0046] The front-end monitoring device is wirelessly connected to the central control unit 5 via wireless sensor 6 to ensure smooth data transmission.

[0047] Set alarm thresholds in the central control unit 5, such as parameters like the opening time of manhole door 1 exceeding the specified duration or the gas concentration reaching a dangerous level, and activate the data storage module to record historical data.

[0048] The central control unit 5 is connected to the central control computer 8 via the signal receiver 7, so that the central control computer 8 can receive and display monitoring data and alarm information.

[0049] After the system is started, the front-end monitoring equipment begins to monitor the opening and closing status of the manhole door 1 and the gas composition and concentration in the confined space in real time, and sends the data to the central control unit 5 through the wireless sensor 6.

[0050] The central control unit 5 analyzes and processes the received data. Once an abnormality is detected, it immediately sends an alarm command to the audible and visual alarm device 4 and the alarm terminal of the central control computer 8. The audible and visual alarm device 4 emits an audible and visual alarm near the confined space to remind on-site personnel. At the same time, the alarm terminal of the central control computer 8 receives the alarm information through the network and notifies the management personnel to handle it in a timely manner.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A centralized alarm system for manholes of limited spaces in the metallurgical industry, comprising a front-end monitoring device, a central control unit (5), an alarm device and a central control computer (8), characterized in that: The front-end monitoring device includes a status sensor (3) installed on the manhole door (1) of the confined space and a gas sensor (2) set inside the confined space; the status sensor (3) is used to monitor the opening and closing status of the manhole door (1), and the gas sensor (2) is used to detect the gas composition and concentration in the confined space; the front-end monitoring device is connected to the central control unit (5) via a wireless sensor (6); the central control unit (5) receives and processes the sensor data, and the central control unit (5) is connected to the central control computer (8) via a signal receiver (7); the alarm device includes an audible and visual alarm device (4) set near the confined space and an alarm terminal of the central control computer (8); when the central control unit (5) detects that the manhole door (1) is abnormally opened or the gas exceeds the standard, it triggers the audible and visual alarm device (4) and the central control computer (8) to alarm.

2. A centralized alarm system for manholes of confined spaces in the metallurgical industry according to claim 1, characterized in that, The status sensor (3) is a door magnetic sensor, and the status sensor (3) is fixed at the contact point between the door frame and the door body of the manhole door (1).

3. A centralized alarm system for manholes of confined spaces in the metallurgical industry according to claim 1, characterized in that, The gas sensor (2) includes at least one of an oxygen concentration sensor, a toxic gas sensor, and a combustible gas sensor, and is installed on the inner wall of a confined space.

4. A centralized alarm system for manholes of confined spaces in the metallurgical industry according to claim 1, characterized in that, The central control unit (5) has a built-in data storage module, which interacts with the central control computer (8) for historical data through an encryption protocol.

5. A centralized alarm system for manholes of confined spaces in the metallurgical industry according to claim 1, characterized in that, The wireless sensor (6) is integrated into the front-end monitoring device and communicates with the central control unit (5) via a wireless network.

6. A centralized control alarm system for manhole doors in confined spaces in the metallurgical industry according to claim 1, characterized in that, The sound and light alarm device (4) is installed within 5 meters of the manhole door (1), and the sound and light alarm device (4) is connected to the central control unit (5) via signal.

7. A centralized control alarm system for manhole doors in confined spaces in the metallurgical industry according to claim 1, characterized in that, The central control unit (5) is equipped with an alarm threshold module, which is used to set the opening time limit of the manhole door (1) and the gas concentration safety threshold.

8. A centralized control alarm system for manhole doors in confined spaces in the metallurgical industry according to claim 7, characterized in that, The system also includes multiple regional central control units (5), each of which is connected to the central control computer (8) in the main control room via signal.

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