Control system for intelligently starting carbon dioxide fire extinguishing device through thermal imaging in limited space

Abstract

The invention relates to the technical field of limited space fire extinguishing, in particular to a control system of a limited space thermal imaging intelligent starting carbon dioxide fire extinguishing device, comprising: an automatic detection unit, which is composed of a fire detector, preferably, the fire detector has functions of temperature sensing, smoke sensing and the like; the audible and visual alarm is arranged in the limited space, when the automatic detection unit detects a fire disaster, detection of personnel in the limited space is achieved through the arranged thermal imaging capturing system, when the fire disaster occurs, the audible and visual alarm works immediately to remind the personnel in the limited space to evacuate, and when the thermal imaging capturing system detects that personnel exist in the limited space, the audible and visual alarm gives an alarm. After spraying of the fire extinguisher is delayed for 5 seconds, detection is carried out again until no person is confirmed in the limited space, the fire extinguisher control unit is started, fire extinguishing in the limited space is achieved, and meanwhile the situation that when low-temperature carbon dioxide fire extinguishing is carried out, the person stays in the limited space, and danger is caused is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of confined space fire extinguishing, and in particular to a control system for a confined space thermal imaging intelligently started carbon dioxide fire extinguishing device. Background Art

[0002] In confined spaces, such as basements, cabins, mines, etc., fires are often accompanied by great danger. Due to the small space and poor ventilation, the fire spreads rapidly and it is difficult for people to evacuate. Therefore, it is particularly important to design a device that can be intelligently activated and effectively extinguish the fire. Carbon dioxide is a commonly used fire extinguishing agent with the advantages of high fire extinguishing efficiency and no pollution. Therefore, choosing carbon dioxide as a fire extinguishing agent in the fire extinguishing system is a common choice in confined spaces. However, it should be noted that carbon dioxide will quickly reduce the oxygen concentration in the confined space during the fire extinguishing process, so it is necessary to ensure that people have evacuated before extinguishing the fire. Summary of the invention

[0003] The purpose of the present invention is to provide a control system for a confined space thermal imaging intelligently activated carbon dioxide fire extinguishing device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] As an optional solution of the control system of the limited space thermal imaging intelligent start carbon dioxide fire extinguishing device described in the present invention, wherein:

[0006] A control system for a limited space thermal imaging intelligently activated carbon dioxide fire extinguishing device, comprising:

[0007] Automatic detection unit, which is composed of fire detectors. Preferably, the fire detectors should have functions such as temperature and smoke sensing;

[0008] The sound and light alarm is set inside the limited space. When the automatic detection unit detects a fire, the sound and light alarm will sound an alarm to remind the internal personnel to evacuate;

[0009] The thermal imaging capture system includes at least one thermal imaging capture device; it is used to capture and detect the movements of people inside and determine whether the people inside have evacuated. When the thermal imaging capture system detects the presence of people in the confined space, the fire extinguisher spraying is delayed. After a delay of 5 seconds, the detection is repeated until it is confirmed that there are no people in the confined space. Or, according to the specific fire location reported by the automatic fire detection unit, the thermal imaging capture system does not capture the presence of people near the fire source, and the fire extinguisher control unit is activated immediately.

[0010] At least one fire extinguisher control unit is provided, and the fire extinguisher control unit includes a container valve and a storage tank for storing fire extinguishing agent, which is used to spray carbon dioxide to extinguish the fire on the spot through carbon dioxide.

[0011] Preferably, the fire extinguisher control unit also includes a fire alarm controller, and the fire alarm controller is electrically connected to the device.

[0012] Preferably, the thermal imaging capture system comprises the following steps:

[0013] S1: When a fire occurs, the dynamics of people in a confined space are captured by a thermal imager;

[0014] S2: When the thermal imager detects that there are still people inside the confined space, the fire alarm controller will be delayed to start, and re-detect after a delay of 5 seconds. When there are no people in the detection area, the equipment inside the confined space will be controlled to cut off power, stop ventilation, and start the fire damper to extinguish the fire;

[0015] S3: Start the container valve to open the fire extinguishing agent storage tank to extinguish the fire.

[0016] Preferably, a manual control unit is also included, including a conversion switch and a manual control valve.

[0017] Preferably, the system also includes an emergency stop valve and an emergency operation valve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The built-in fire detector can monitor fire signals in real time. Once an abnormal situation is detected, the system can immediately activate the sound and light alarm to send an emergency evacuation signal to the on-site personnel. At the same time, the system can quickly and automatically activate the carbon dioxide fire extinguishing device to quickly and effectively extinguish the fire, greatly shortening the response time and thus reducing the losses caused by the fire.

[0020] Secondly, the system has unique advantages in terms of personnel safety. Through advanced thermal imaging technology, the system can capture the dynamics of people in a limited space in real time and accurately determine the location and number of people. Before the fire extinguishing device is activated, the system will ensure that all personnel have been safely evacuated, thus avoiding the risk of harm to the human body caused by low-temperature carbon dioxide gas during the fire extinguishing process.

[0021] In addition, the system is easy to operate and highly automated, greatly reducing the reliance on manual operation. Users only need to perform simple settings and debugging, and the system can continue to operate unattended, greatly reducing operating costs and maintenance difficulties. At the same time, the stability and reliability of the system are also fully guaranteed, and it can continue to operate stably in various harsh environments, providing strong protection for the fire safety of the venue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The schematic diagram is the overall structure of a control system for a thermal imaging intelligently activated carbon dioxide fire extinguishing device in a limited space. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] A control system for intelligently starting a carbon dioxide fire extinguishing device in a limited space based on thermal imaging technology. The system can automatically detect, alarm, and detect the evacuation of personnel when a fire occurs, and intelligently start the fire extinguisher to extinguish the fire. At the same time, it provides manual control and emergency stop functions to ensure the safety and reliability of the fire extinguishing process.

[0028] include:

[0029] The automatic detection unit is composed of fire detectors, which should have multiple functions such as temperature and smoke sensing. Temperature detectors detect fires by monitoring changes in ambient temperature; smoke detectors detect fires by monitoring the concentration of smoke particles in the air. In order to improve the accuracy and reliability of detection, fire detectors should be distributed in every corner and key positions in a limited space. At the same time, fire detectors should also have waterproof and dustproof properties to adapt to harsh working environments.

[0030] Sound and light alarms should be installed in conspicuous and easily audible locations inside confined spaces. When a fire occurs, the sound and light alarms should emit loud alarms and flashing lights to remind people inside to evacuate quickly. The sound and light of the sound and light alarms should have sufficient intensity and penetration to ensure that they can quickly attract the attention of people when a fire occurs.

[0031] The thermal imaging capture system consists of at least one thermal imaging capture device. The thermal imaging capture device detects the movement of people by capturing the infrared radiation of people in a limited space. In order to improve the accuracy and reliability of detection, the thermal imaging capture device should have characteristics such as high resolution and high sensitivity. At the same time, the thermal imaging capture device should also have functions such as automatic calibration and automatic adjustment to adapt to different working environments and personnel dynamics.

[0032] The fire extinguisher control unit consists of a container valve and a storage tank for storing fire extinguishing agents. The container valve should have the characteristics of quick opening and good sealing to ensure that the fire extinguishing agent can be released quickly during the fire extinguishing process. At the same time, the storage tank should have sufficient capacity and pressure bearing capacity to store enough fire extinguishing agents and withstand the pressure changes during the fire extinguishing process.

[0033] In the above, the thermal imaging capture system is set up to detect people inside the confined space. When a fire occurs, the sound and light alarm will work immediately to remind the internal personnel to evacuate. When the thermal imaging capture system detects the presence of people in the confined space, the fire extinguisher will be delayed. After a delay of 5 seconds, it will be re-detected until it is confirmed that there are no people in the confined space, or according to the specific fire location reported by the automatic fire detection unit, the thermal imaging capture system does not capture the presence of people near the fire source, and the fire extinguisher control unit will be activated immediately to extinguish the fire in the confined space. At the same time, it is prevented that people stay in the confined space when the low-temperature carbon dioxide is used to extinguish the fire, which may cause danger.

[0034] Furthermore, the fire extinguisher control unit also includes a fire alarm controller, which is electrically connected to power supplies, fans, fire dampers and other equipment. When a fire occurs, after all personnel have escaped from the confined space, the internal equipment of the confined space is controlled to cut off power, stop ventilation, and start the fire dampers to achieve fire extinguishing.

[0035] Furthermore, the thermal imaging capture system comprises the following steps:

[0036] S1: When a fire occurs, the dynamics of people in a confined space are captured by a thermal imager;

[0037] S2: When the thermal imager detects that there are still people inside the confined space, the fire alarm controller will be delayed to start, and re-detect after a delay of 5 seconds. When there are no people in the detection area, the equipment inside the confined space will be controlled to cut off power, stop ventilation, and start the fire damper to extinguish the fire;

[0038] S3: Start the container valve to open the fire extinguishing agent storage tank to extinguish the fire.

[0039] Furthermore, the system also includes a manual control unit, including a conversion switch and a manual control valve. When personnel discover a fire, manual / automatic switching is achieved through the conversion switch, and the sound and light alarm is activated through the manual control valve, thereby realizing manual alarm.

[0040] Furthermore, the system also includes an emergency stop valve and an emergency operation valve, which are used to stop the fire extinguishing process or perform emergency operations in an emergency.

[0041] Working principle:

[0042] Automatic detection and alarm: When a fire occurs in a confined space, the fire detector first detects the fire signal (such as temperature rise, smoke generation, etc.) and transmits the signal to the control system. After receiving the signal, the control system immediately activates the sound and light alarm, sounds a sound and light alarm, and reminds the internal personnel to evacuate quickly.

[0043] Personnel evacuation detection and delayed fire extinguishing: At the same time, the thermal imaging capture system starts working to capture and detect the dynamics of personnel in the confined space. If the thermal imaging capture system detects that there are still people in the confined space, the control system will delay the discharge of the fire extinguisher. The delay time is 5 seconds, during which the thermal imaging capture system continues to detect. If there are still people in the detection area after 5 seconds, the delay will continue; if there are no people in the detection area, or according to the specific fire location reported by the automatic fire detection unit, the thermal imaging capture system does not capture the presence of people near the fire source, and the fire extinguisher control unit is immediately activated. The thermal imaging capture system comprehensively detects that there are no people in the fire area, then the control system controls the internal equipment of the confined space to cut off the power, stop ventilation, start the fire damper, and start the fire extinguisher control unit to extinguish the fire.

[0044] Fire extinguisher spraying and fire extinguishing: After receiving the command from the control system, the fire extinguisher control unit opens the container valve and releases the carbon dioxide in the storage tank. The carbon dioxide quickly fills the limited space, reducing the oxygen concentration and thus extinguishing the fire.

[0045] Manual control and emergency stop: In the event of a fire, if the automatic control system fails or personnel need manual operation, they can switch through the manual control unit. The conversion switch switches the system to manual mode and activates the sound and light alarm through the manual control valve. At the same time, the emergency stop valve and emergency operation valve can be used to stop the fire extinguishing process or perform other emergency operations in an emergency.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A control system for a limited space thermal imaging intelligently activated carbon dioxide fire extinguishing device, characterized in that: include: Automatic detection unit, which is composed of fire detectors. Preferably, the fire detectors should have functions such as temperature and smoke sensing; The sound and light alarm is set inside the limited space. When the automatic detection unit detects a fire, the sound and light alarm will sound an alarm to remind the internal personnel to evacuate; A thermal imaging capture system, comprising at least one thermal imaging capture device; It is used to capture and detect the movements of people inside and determine whether they have evacuated. When the thermal imaging capture system detects the presence of people in the confined space, the fire extinguisher spraying is delayed. After a delay of 5 seconds, re-detection is carried out until it is confirmed that there are no people in the confined space. Or, according to the specific fire location reported by the automatic fire detection unit, the thermal imaging capture system does not capture the presence of people near the fire source, and the fire extinguisher control unit is activated immediately. At least one fire extinguisher control unit is provided, and the fire extinguisher control unit includes a container valve and a storage tank for storing fire extinguishing agent, which is used to spray carbon dioxide to extinguish the fire on the spot through carbon dioxide.

2. According to claim 1, a control system for intelligently starting a carbon dioxide fire extinguishing device in a limited space based on thermal imaging technology is characterized in that: The fire extinguisher control unit also includes a fire alarm controller, which is electrically connected to the device.

3. According to claim 1, a control system for intelligently starting a carbon dioxide fire extinguishing device in a limited space based on thermal imaging technology is characterized in that: The thermal imaging capture system comprises the following steps: S1: When a fire occurs, the dynamics of people in a confined space are captured by a thermal imager; S2: When the thermal imager detects that there are still people inside the confined space, the fire alarm controller will be delayed to start, and re-detect after a delay of 5 seconds. When there are no people in the detection area, the equipment inside the confined space will be powered off, ventilation will be stopped, and the fire damper will be started to extinguish the fire; S3: Start the container valve to open the fire extinguishing agent storage tank to extinguish the fire.

4. According to claim 1, a control system for intelligently starting a carbon dioxide fire extinguishing device in a limited space based on thermal imaging technology is characterized in that: Also included is a manual control unit, including a change-over switch and a manually controlled valve.

5. According to claim 1, a control system for intelligently starting a carbon dioxide fire extinguishing device in a limited space based on thermal imaging technology is characterized in that: The system also includes an emergency stop valve and an emergency operating valve.

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