Anti-freezing and damp-proof system for fire pump room

Abstract

The invention relates to the technical field of fire-fighting facility detection, in particular to a fire-fighting pump room anti-freezing and moisture-proof system, which comprises a data acquisition module, a data processing module, a data processing module and a data processing module, and is characterized in that the data acquisition module is used for acquiring pump room environment parameters, outdoor environment parameters and indoor facility surface temperature parameters; the data processing module is used for preprocessing the pump room environment parameters, the outdoor environment parameters and the indoor facility surface temperature; the control decision module comprises an abnormity early warning unit which is used for calculating a freezing risk index and a moisture-proof risk threshold temperature, judging whether anti-freezing early warning or moisture-proof early warning exists or not and outputting an early warning result; and the automatic control unit is used for regulating and controlling the operation state of related equipment in the pump room according to the early warning result. According to the invention, through intelligent monitoring and dynamic adjustment of environment temperature and humidity and equipment surface temperature in the fire-fighting pump room, equipment in the fire-fighting pump room is effectively prevented from being damaged by freezing and humid environment.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection facility detection, in particular to an antifreeze and moisture-proof system for a fire pump room. Background Art

[0002] As a core component of the fire protection system, the proper operation of the fire pump room is directly related to the success of fire fighting. However, fire pump rooms often face severe environmental challenges, especially in cold regions or seasons, where pipes are prone to freezing. Furthermore, the environment in fire pump rooms is generally humid, with relative humidity exceeding 90%, reaching condensation levels. These environmental factors seriously threaten the normal operation of the equipment within the pump room, potentially causing system failure and thus compromising fire safety.

[0003] Currently, there are several protective technologies available on the market for the humid environments of fire pump rooms. For example, CN200810126419.6 discloses a fire water supply equipment control cabinet with an automatic moisture-proof and dehumidification device. This technology involves installing a detector on the top of the control cabinet and a dehumidification heater on the bottom, connected via flame-retardant twisted-pair cables. The system automatically detects the temperature and humidity inside the cabinet and performs dehumidification and heating. However, this technology is limited to moisture-proofing and dehumidification within a single control cabinet and cannot fully monitor and control the entire pump room environment. Furthermore, the technology lacks comprehensive consideration of antifreeze issues and a scientific risk assessment mechanism, making it impossible to provide early warnings and take protective measures based on changing trends in environmental parameters. Furthermore, the technology lacks remote monitoring and data analysis capabilities, making it incapable of intelligent management and decision support. Consequently, it suffers from significant technical limitations in practical applications. Summary of the Invention

[0004] In view of this, the present invention proposes a fire pump room anti-freeze and moisture-proof system to solve technical problems in the existing technology, such as the lack of comprehensive monitoring and control of the entire pump room environment, the inability to scientifically assess freezing and moisture risks, and the lack of an intelligent early warning mechanism.

[0005] The technical solution of the present invention is achieved as follows: The present invention provides a fire pump room antifreeze and moisture-proof system, comprising:

[0006] Data acquisition module, used to collect pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature parameters;

[0007] The data processing module is connected to the data acquisition module and is used to pre-process the pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature;

[0008] A control decision module is connected to the data processing module and includes:

[0009] The abnormal warning unit compares the freezing risk index and moisture risk threshold temperature with the preset threshold to determine whether there is an antifreeze warning or moisture warning and outputs the warning result;

[0010] The automatic control unit is connected to the abnormal warning unit and is used to adjust the operating status of relevant equipment in the pump room according to the warning results.

[0011] Based on the above technical solutions, preferably, the pump room environmental parameters include indoor dry-bulb temperature, indoor relative humidity, pump room dew point temperature and pump room moisture content; the outdoor environmental parameters include outdoor dry-bulb temperature, outdoor relative humidity, outdoor dew point temperature and outdoor moisture content; the indoor facility surface temperature parameters include indoor water pipe wall temperature, indoor enclosure structure surface temperature, indoor bridge wall temperature and indoor electrical cabinet surface temperature.

[0012] Based on the above technical solution, preferably, the execution process of the control decision module is as follows:

[0013] (1) Calculate the freezing risk index and moisture risk threshold temperature based on the preprocessed parameters;

[0014] (2) Compare the freezing risk index with the preset antifreeze trigger threshold to determine whether the current freezing risk index is greater than the preset antifreeze trigger threshold. If so, output an antifreeze warning, and the automatic control unit executes the antifreeze control strategy according to the antifreeze warning. If not, proceed to the next step.

[0015] (3) Compare the minimum value of the current indoor facility surface temperature parameter with the moisture-proof risk threshold temperature to determine whether the minimum value of the current indoor facility surface temperature is less than the moisture-proof risk threshold temperature. If so, output a moisture-proof warning, and the automatic control unit executes the corresponding moisture-proof control strategy according to the moisture-proof warning. If not, maintain the status quo.

[0016] Based on the above technical solution, preferably, the calculation formula of the freezing risk index is:

[0017]

[0018] in, is the freezing temperature of water; is the safety margin temperature; It is the minimum value between the indoor dry bulb temperature and the surface temperature of each device; is the rate of temperature change, in °C / h; is the trend influence coefficient, with a value of 0.2-0.5.

[0019] Based on the above technical solution, preferably, the calculation formula for the moisture-proof risk threshold temperature is:

[0020]

[0021] in, is the current dew point temperature, is the condensation safety margin, is the dew point temperature change rate, is the trend influence coefficient, and its value is 0.1-0.3.

[0022] Based on the above technical solutions, preferably, the antifreeze control strategy includes: recording the current temperature value and timestamp, shutting down the supply / exhaust system, shutting down the dehumidifier, turning on the heater, and continuing this state until the freezing risk index is less than the preset antifreeze release threshold.

[0023] On the basis of the above technical solution, preferably, in step (3), the automatic control unit executes the corresponding moisture-proof control strategy according to the moisture-proof warning, specifically including:

[0024] A. When the outdoor humidity is higher than the indoor humidity, the abnormal warning unit outputs a first-class moisture warning. After receiving the first-class moisture warning, the automatic control unit issues a control instruction: shut down the air supply / exhaust system, turn on the dehumidifier, and turn off the heater. This state continues until the moisture warning release condition is met.

[0025] B. When the indoor humidity is higher than the outdoor humidity and the outdoor temperature is higher than the sum of the indoor dew point temperature and the preset ventilation safety margin, the abnormal warning unit outputs a second-type moisture-proof warning. After receiving the second-type moisture-proof warning, the automatic control unit issues a control instruction: turning on the supply / exhaust system and turning off the dehumidifier. This state continues until the moisture-proof warning release condition is met;

[0026] C. When the indoor humidity is greater than the outdoor humidity and the outdoor dry-bulb temperature is not greater than the sum of the indoor dew point temperature and the preset ventilation safety margin, the abnormal warning unit outputs a third-type moisture-proof warning. After receiving the third-type moisture-proof warning, the automatic control unit issues a control instruction: shut down the supply / exhaust system and turn on the dehumidifier. This state continues until the moisture-proof warning release condition is met.

[0027] On the basis of the above technical solution, preferably, the moisture-proof warning release condition is that the minimum surface temperature of the indoor facility is greater than the sum of the indoor dew point temperature and a preset release safety margin.

[0028] On the basis of the above technical solution, preferably, the control decision module also includes an equipment protection unit for monitoring the operating status of the dehumidifier, heater and supply / exhaust system. When the start and stop frequency of the equipment exceeds a preset threshold, the lag time of the control response is increased; the preset threshold is that the number of starts and stops per hour does not exceed 3-6 times, and the lag time of the control response is 5-15 minutes.

[0029] On the basis of the above technical solution, preferably, the system further includes:

[0030] The remote monitoring module is used to display in real time the data collected by the data acquisition module, the data processed by the data processing module, the warning results output by the abnormal warning unit of the control decision module, and the status of the equipment controlled by the automatic control unit of the control decision module, and allows remote adjustment of control parameters;

[0031] The report generation module is used to automatically generate system operation logs, alarm records and historical trend analysis reports of key environmental parameters.

[0032] The fire pump room antifreeze and moisture-proof system of the present invention has the following beneficial effects compared with the prior art:

[0033] (1) By constructing a closed-loop control system consisting of a data acquisition module, a data processing module, a control decision module, a remote monitoring module, and a report generation module, the system realizes intelligent monitoring and dynamic adjustment of the ambient temperature and humidity in the fire pump room and the surface temperature of the equipment, effectively preventing the equipment in the fire pump room from being harmed by freezing and humid environments, improving the safety and reliability of the fire pump room equipment, reducing the equipment failure rate and maintenance costs, and ensuring the normal operation of the fire protection system under various environmental conditions;

[0034] (2) The freezing risk index calculation formula adopted by the present invention comprehensively considers the difference between the current minimum temperature and the freezing temperature, the safety margin, and the temperature change trend, and introduces a trend influence coefficient, so that the system can perceive the trend change of freezing risk in advance. Compared with the traditional single temperature threshold judgment method, it greatly improves the accuracy and foresight of antifreeze warning, and reduces misjudgments and missed judgments caused by ambient temperature fluctuations;

[0035] (3) The present invention divides moisture-proof conditions into three categories based on the relationship between indoor and outdoor humidity and temperature, and adopts different control strategies for each category, thus avoiding the "one-size-fits-all" control method of traditional systems, improving the energy efficiency of the system, reducing unnecessary equipment operation while achieving the moisture-proof goal, reducing energy consumption, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0037] Figure 1 This is a structural diagram of the fire pump room antifreeze and moisture-proof system of the present invention;

[0038] Figure 2 It is a working flow chart of the antifreeze and moisture-proof system of the fire pump room of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the fire pump room of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] like Figure 1 and Figure 2 As shown, the present invention provides a fire pump room antifreeze and moisture-proof system, comprising:

[0042] Data acquisition module, used to collect pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature parameters;

[0043] The data processing module is connected to the data acquisition module and is used to pre-process the pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature parameters;

[0044] A control decision module is connected to the data processing module, and the control decision module includes:

[0045] The abnormal warning unit calculates the freezing risk index and moisture risk threshold temperature based on the preprocessed parameters, compares the freezing risk index and moisture risk threshold temperature with the preset thresholds to determine whether an antifreeze warning or moisture warning is required and outputs the warning result;

[0046] The automatic control unit is connected to the abnormal warning unit and is used to adjust the operating status of relevant equipment in the pump room according to the warning results.

[0047] Specifically, the data acquisition module obtains indoor and outdoor environmental parameters and equipment surface temperature parameters from various sensors; the data processing module verifies, cleans and converts the collected raw data to obtain pre-processed data parameters, and calculates the freezing risk index and moisture-proof risk threshold temperature based on the pre-processed parameters; the abnormal warning unit determines whether there is an anti-freeze or moisture-proof warning state based on the freezing risk index and moisture-proof risk threshold temperature; the automatic control unit adjusts the equipment operation state according to the received warning results and executes the corresponding anti-freeze or moisture-proof strategy, thereby realizing anti-freeze and moisture-proof control of the fire pump room.

[0048] The present invention achieves comprehensive anti-freeze and moisture-proof protection for fire pump rooms by establishing a complete environmental monitoring, risk assessment, and intelligent control system. The system can monitor the changing trends of environmental parameters in real time, and warn of potential risks in advance, effectively avoiding the problem of equipment damage caused by delayed reactions in traditional technologies; the use of a scientific risk index calculation method improves the accuracy and reliability of anti-freeze and moisture-proof measures; the intelligent control strategy optimizes the equipment operating status, ensuring the normal working environment of the fire equipment, avoiding frequent equipment start-up and shutdown, and extending the service life of the system; at the same time, the system has adaptive capabilities and can flexibly adjust the control strategy according to different seasons and regional characteristics, greatly improving the safe and stable operation of the fire pump room, and providing a more reliable technical guarantee for fire safety.

[0049] Furthermore, if Figure 3 As shown, the pump room environmental parameters include the indoor dry bulb temperature t n 、Indoor relative humidity φ n , pump room dew point temperature t nl and the moisture content of the pump room d n ; Outdoor environmental parameters include outdoor dry bulb temperature t w 、Outdoor relative humidity φ w , outdoor dew point temperature t wl and outdoor humidity d w ; Indoor facility surface temperature including indoor water pipe wall temperature t n1 , indoor envelope surface temperature t n2 , indoor bridge wall temperature t n3 and the surface temperature of the indoor electrical cabinet t n4 Among them, the indoor enclosure structure refers to the structural components in the fire pump room building that are in direct contact with the external environment and play a role of separation and protection, mainly including exterior walls, interior walls, roofs, floor slabs, doors, windows and other building components.

[0050] Among them, the indoor dry-bulb temperature, outdoor dry-bulb temperature and indoor facility surface temperature are collected through temperature sensors, and the indoor relative humidity and outdoor relative humidity are collected through humidity sensors.

[0051] Furthermore, the data processing module is responsible for receiving the raw data from the data acquisition module, performing pre-processing operations such as cleaning, filtering, and outlier processing on it, and calculating relevant derived parameters.

[0052] Specifically, the data processing module uses a combination of sliding average and median filtering to denoise all temperature and humidity sensor data (indoor dry-bulb temperature, indoor relative humidity, outdoor dry-bulb temperature, outdoor relative humidity, and surface temperature of each device), filtering out random noise and sudden interference to ensure data smoothness and usability. Based on statistical principles, the system employs the 3σ criterion to identify and handle abnormal data. Data outside the sensor's range is directly marked as invalid. Data deviating from the mean by more than three standard deviations is interpolated from nearby valid data. If multiple consecutive data points are abnormal, the system issues a sensor fault warning, prompting maintenance personnel to check sensor status. To address missing data caused by interruptions in data transmission or temporary sensor failures, the data processing module uses linear or polynomial interpolation methods based on historical data trends to complete the data. This ensures the system remains functional even in the event of temporary sensor failures, improving system robustness.

[0053] Pump room dew point temperature t nl The calculation formula is:

[0054]

[0055] Where, and is a constant obtained by fitting the experimental data.

[0056] Pump room moisture content d n The calculation formula is:

[0057]

[0058] Where, and is a constant obtained by fitting the experimental data.

[0059] Where, represents the indoor water vapor partial pressure, and p is the standard atmospheric pressure.

[0060] Outdoor dew point temperature t wl The calculation formula is:

[0061]

[0062] Outdoor humidity d w The calculation formula is:

[0063] .

[0064] The control and decision-making module is responsible for scientifically assessing the freezing and moisture risks within the pump room based on environmental parameters and equipment surface temperature data pre-processed by the data processing module. It then automatically adjusts the operating status of related equipment based on the assessment results. By establishing a mathematical model based on physical mechanisms and engineering experience, this module enables the system to provide early warning and proactive intervention capabilities, avoiding the passive response limitations of traditional systems and effectively ensuring the normal operation of firefighting equipment.

[0065] The control decision module consists of three functional units: an anomaly warning unit, an automatic control unit, and an equipment protection unit. The anomaly warning unit is responsible for risk assessment and abnormal situation warnings; the automatic control unit is responsible for implementing specific control measures; and the equipment protection unit is responsible for monitoring equipment operating status and preventing excessive equipment wear and tear. These three units work closely together to form a complete closed-loop intelligent control system.

[0066] Furthermore, the execution process of the control decision module is as follows:

[0067] (1) calculating a freezing risk index and a moisture-proof risk threshold temperature based on the preprocessed parameters;

[0068] (2) Compare the freezing risk index with the preset antifreeze trigger threshold to determine whether the current freezing risk index is greater than the preset antifreeze trigger threshold. If so, output an antifreeze warning, and the automatic control unit executes the antifreeze control strategy according to the antifreeze warning. If not, proceed to the next step.

[0069] (3) Compare the current minimum value of the indoor facility surface temperature with the moisture-proof risk threshold temperature to determine whether the current minimum value of the indoor facility surface temperature is less than the moisture-proof risk threshold temperature. If so, output a moisture-proof warning, and the automatic control unit executes the corresponding moisture-proof control strategy according to the moisture-proof warning. If not, maintain the status quo.

[0070] Specifically, the freezing risk index The calculation formula is:

[0071]

[0072] Where, is the freezing temperature of water, usually taken as 0°C; is the safety margin temperature, set according to engineering experience; It is the minimum value between the indoor dry bulb temperature and the surface temperature of each device; The temperature change rate is expressed in °C / h and is usually calculated based on the temperature change over the last 30-60 minutes. is the trend influence coefficient, with a value of 0.2-0.5. Used to assess the freezing risk under the current temperature conditions, The influence of temperature change trend is introduced to enable the system to respond in advance according to the temperature change trend and initiate anti-freeze measures in advance when the temperature has not yet reached a dangerous level but is showing a rapid downward trend.

[0073] The system divides the risk level into three levels according to the value of the freezing risk index:

[0074] Low risk range: <0.6, indicating that the current ambient temperature is high or has an upward trend, the freezing risk is low, the system can maintain normal operation, and no anti-freeze measures need to be activated; medium risk range: , indicating that the ambient temperature is approaching the critical threshold for antifreeze or there is a clear cooling trend. The temperature changes should be closely monitored and the system enters an alert state, but there is no need to fully initiate antifreeze measures; High-risk zone:

[0075] , indicating that the ambient temperature is approaching freezing temperature or is rapidly decreasing, and the risk of freezing is imminent. The system should immediately initiate anti-freeze measures to ensure equipment safety.

[0076] The system adopts a dual threshold design to form a hysteresis control characteristic. Antifreeze trigger threshold: set to the freezing risk index Reaching 0.8, when this threshold is reached, the system will output an antifreeze warning signal and activate the antifreeze control strategy. Antifreeze release threshold: set as the freezing risk index When the temperature drops below 0.6, the system will release the antifreeze warning and stop antifreeze measures. The release threshold is significantly lower than the trigger threshold. This hysteresis design effectively prevents frequent equipment startup and shutdown caused by slight fluctuations in environmental parameters near critical states, thereby improving system stability and equipment life.

[0077] When freezing risk index When the antifreeze trigger threshold (i.e., 0.8) is greater than the preset antifreeze trigger threshold, the system initiates the antifreeze control process. The specific execution steps are as follows: The system first records detailed environmental data when the antifreeze control is triggered, including the timestamp, the temperature values ​​of each measuring point, and the calculated freezing risk index. This data is used for subsequent trend analysis, system optimization, and fault analysis. The recorded data also serves as part of the system operation log to support administrator monitoring and auditing. The supply / exhaust system is immediately shut down, including all supply and exhaust fans, dampers, and other equipment. The system will first confirm the current operating status of the fan. If the fan is running, a stop command will be sent and the relevant dampers will be closed at the same time to minimize indoor and outdoor air exchange. The purpose is to prevent cold air from entering the pump room, reduce heat loss, and maintain indoor temperature. All running dehumidifiers will be turned off and heating equipment will be turned on to increase the indoor temperature. The system determines the number of heaters to activate and their power levels based on the freeze risk index and the difference between the indoor temperature and the target temperature. For heaters with multiple units or adjustable power, the system uses a staged activation strategy, initially activating the necessary number of units or at lower power levels, then increasing them as needed. The system also continuously monitors heater operating status and indoor temperature changes to ensure effective warming. Maintaining this control state, the system continuously monitors indoor temperature changes, periodically recalculates the freeze risk index, and evaluates the effectiveness of antifreeze measures. If the freeze risk index continues to rise or remains high, the system will strengthen antifreeze measures, such as increasing heater power. If the temperature in a particular area of ​​the room drops close to freezing, the system will issue an emergency alert, prompting administrator intervention. The freeze risk index F1 is continuously monitored. When F1F1 remains below the antifreeze release threshold (0.6) for a period of time (typically 10-15 minutes), the system releases the antifreeze state.

[0078] The calculation formula for the moisture risk threshold temperature T is:

[0079]

[0080] Where T is the moisture risk threshold temperature, in °C, which represents the safe lower limit of the equipment surface temperature. is the current indoor dew point temperature, This is the condensation safety margin, set based on experience; The dew point temperature change rate is expressed in °C / h and is usually calculated based on the dew point temperature change in the last 30-60 minutes. is the trend influence coefficient, which is 0.1-0.3. In this calculation formula, the current indoor dew point temperature is Based on the critical temperature point at which condensation begins on the surface of the equipment in theory; Ensure that a certain safety distance is maintained between the surface temperature of the equipment and the dew point temperature; Realizes dynamic adjustment of safety margin and trend influence coefficient Used to control the system's sensitivity to dew point temperature trends.

[0081] Determine the minimum value of the surface temperature of indoor facilities min(t n1 ,t n2 ,t n3 ,t n4 ), compare the minimum surface temperature with the moisture-proof risk threshold temperature T. If the minimum surface temperature is lower than the moisture-proof risk threshold temperature, it is determined that there is a condensation risk and the moisture-proof strategy needs to be implemented. If the minimum surface temperature is greater than or equal to the moisture-proof risk threshold temperature, it is determined that the condensation risk is acceptable and no special intervention is required.

[0082] When the system determines that there is a risk of condensation, it needs to further determine which moisture-proof strategy to adopt. The system divides moisture-proof strategies into three categories based on the relationship between indoor and outdoor humidity conditions and temperature. The specific judgment process is as follows:

[0083] A. Calculate the indoor humidity and outdoor humidity, and compare the two. If d w >d n , the outdoor air contains more moisture than the indoor air. In this case, ventilation will introduce more moisture, which is not conducive to moisture prevention. The first type of moisture prevention strategy should be adopted. The first type of moisture prevention strategy includes: the system records the detailed environmental data that triggers the first type of moisture prevention strategy, including indoor and outdoor temperature and humidity, surface temperature, moisture content calculation results, etc., analyzes the size of the difference in indoor and outdoor moisture content, and assesses the degree of moisture risk. Shut down all supply / exhaust systems, including air supply and exhaust fans and related air valves. The system first checks the current operating status of the fan, sends a stop command to the running equipment, confirms that the air valve is closed, and isolates the indoor and outdoor air exchange. The purpose is to prevent high-humidity outdoor air from entering the pump room and exacerbating the indoor humidity problem. Turn on the indoor dehumidifier to reduce the indoor humidity. The system continuously monitors the dehumidification effect and records the humidity change trend. If the humidity decreases too slowly, the system will record it in the log to remind the administrator that additional dehumidification equipment may be needed. Turn off heating equipment to avoid unnecessary energy consumption; if the current ambient temperature is low (close to but not yet reaching the antifreeze trigger condition), the system may keep some heating equipment running at low power to prevent the temperature from dropping further; the system continuously monitors indoor temperature changes to ensure that there is no risk of freezing during the dehumidification process.

[0084] B. If d n >d w , indicating that the indoor air humidity is higher than the outdoor air humidity, further judgment is needed to calculate the outdoor temperature t w The indoor dew point temperature plus ventilation safety margin (t nl +Δt v ) If t w >t nl +Δt v, indicating that the outdoor air temperature is high enough to prevent condensation on indoor surfaces, necessitating the second-level moisture prevention strategy. The second-level moisture prevention strategy involves the system recording detailed environmental data that triggers the second-level moisture prevention strategy, specifically analyzing the difference in indoor and outdoor humidity and the relationship between outdoor temperature and indoor dew point. The system activates the supply and exhaust ventilation systems to promote indoor and outdoor air exchange; monitors fan operation to ensure proper functioning; and shuts off dehumidifiers, generally keeping heaters off. If the outdoor temperature is higher than the indoor dew point plus a safety margin, but still relatively low (e.g., below 5°C), the system may activate low-power heating based on actual conditions to prevent ventilation from causing excessively low indoor temperatures. The system reassesses the relationship between indoor and outdoor humidity and temperature at short intervals (usually every 5-10 minutes). If environmental conditions change and no longer meet the requirements for the second-level moisture prevention strategy, the system automatically switches to the first or third-level moisture prevention strategies.

[0085] C. If t w ≤t nl +Δt v , indicating that the outdoor air temperature is low and may condense on the surface of indoor cooling equipment after being introduced. The third type of moisture-proof strategy should be adopted. Δt v The value is usually 2-3°C, which is a safety factor to ensure that ventilation does not cause new condensation problems. v Values ​​provide greater safety but may limit ventilation opportunities; smaller Δt v The value increases ventilation opportunities, but the potential risk of condensation is slightly higher. The third type of moisture-proof strategy includes: the system records detailed environmental data that triggers the third type of moisture-proof strategy, analyzes the difference in indoor and outdoor humidity, and the relationship between outdoor temperature and indoor dew point temperature. Turn off the supply / exhaust system to block the exchange of air between indoor and outdoor. The system checks the operating status of the fan and sends a stop command to the running device; turns on the indoor dehumidifier to reduce the indoor humidity. The system continuously monitors the dehumidification effect and records the humidity reduction trend. The system continuously monitors the dehumidification effect and records the humidity reduction trend. Maintain the execution of the control strategy while continuously evaluating its effectiveness. Re-evaluate the indoor humidity change rate every preset time (usually 10-15 minutes). If the humidity decreases too slowly, the system will record it in the log and increase the dehumidification effort or alert the administrator if necessary. At the same time, monitor the indoor temperature changes to ensure that the dehumidification process does not cause the temperature to drop too low, causing the risk of freezing.

[0086] When the environmental conditions improve to a safe range, the system should promptly release the moisture warning state. The judgment process for releasing the conditions is as follows: Real-time monitoring of the surface temperature of indoor facilities (t n1 ,t n2 ,t n3 ,t n4 ), obtain the latest calculated indoor dew point temperature, and determine the release safety margin Δt r, calculate the minimum surface temperature of the equipment min(t n1 ,t n2 ,t n3 ,t n4 ), calculate the safety comparison threshold t nl +Δt r , if min(t n1 ,t n2 ,t n3 ,t n4 )>t nl +Δt r , it is determined that the release condition has been met. The system needs to continuously monitor until the release condition is met for a preset time (usually 5-10 minutes) before officially releasing the moisture-proof warning. This design can avoid frequent state switching caused by short-term data fluctuations. Release safety margin Δt r Usually slightly larger than the condensation safety margin S in the initial judgment dp , forming a hysteresis characteristic, avoiding the system from frequently switching working modes near the critical state. The present invention divides the moisture-proof strategies into three categories and adopts appropriate control measures for different indoor and outdoor humidity and temperature combinations, so that the system can select the optimal control scheme under various complex environmental conditions, greatly improving the moisture-proof effect and energy utilization efficiency. For example, when the outdoor air is dry and the temperature is suitable, the system gives priority to ventilation for moisture-proofing, which saves a lot of electricity compared to continuously running the dehumidifier; when the outdoor air humidity is high or the temperature is too low, the system avoids ventilation to prevent the introduction of more moisture or the risk of new condensation.

[0087] The device protection unit, a key component of the control decision module, aims to prevent excessive wear and tear on equipment caused by frequent starts and stops or prolonged continuous operation, extending equipment life and reducing maintenance costs. The device protection unit implements strict start and stop frequency monitoring and management for all devices controlled by the system, including heaters, dehumidifiers, and ventilation systems. This includes recording every start and stop event for each device, including timestamps and triggering reasons. It also sets a maximum permissible number of starts and stops per hour, typically 3-6, depending on the device type and manufacturer's recommendations. If a device's starts and stops approach the limit within a time window, the system proactively intervenes in the control logic. Enforcing start and stop restrictions doesn't completely prohibit necessary device operations, but rather reduces their frequency by increasing delays, for example. When a device's start and stop frequency approaches the threshold, the system increases the control response delay, ranging from 5 to 15 minutes. For example, if a device has started and stopped four times in the past 45 minutes, and the limit is 6 times / hour, the system will delay the next potential state transition by 10 minutes. The system will identify necessary starts and stops in special circumstances, such as emergency antifreeze needs. In extreme cases (such as a sudden and rapid increase in the freezing risk index), the system will temporarily relax the start and stop frequency limit to prioritize equipment safety. Such exceptions will be specially recorded and trigger the system to notify the administrator.

[0088] The control decision module achieves intelligent coordination of antifreeze, moisture-proofing, and equipment protection functions. Through a priority management mechanism, it ensures stable and reliable system operation even in complex and changing environmental conditions. A dual assessment mechanism for freezing and moisture risks enables the system to comprehensively assess the pump room environment and provide comprehensive protection. The addition of the equipment protection unit effectively extends the service life of system equipment, reducing maintenance costs and failure rates.

[0089] Furthermore, the system also includes:

[0090] The remote monitoring module is used to display in real time the data collected by the data acquisition module, the data processed by the data processing module, the warning results output by the abnormal warning unit of the control decision module, and the status of the equipment controlled by the automatic control unit of the control decision module, and allows remote adjustment of control parameters;

[0091] The report generation module is used to automatically generate system operation logs, alarm records and historical trend analysis reports of key environmental parameters.

[0092] The remote monitoring module serves as the human-machine interface for the fire pump room's antifreeze and moisture-proofing system. It connects to the data acquisition module, data processing module, and control and decision-making module (including the abnormality warning unit and automatic control unit) to enable real-time monitoring and remote control of the entire system. This module utilizes a layered design, encompassing a data reception layer, a data processing layer, a business logic layer, and a user interface layer, forming a complete closed-loop monitoring system.

[0093] The remote monitoring module establishes a real-time data connection with the data acquisition and processing modules via standard communication protocols (such as Modbus TCP, OPC UA, or MQTT). It uses polling or push notifications to obtain outdoor environmental parameters, pump room environmental parameters, and equipment surface temperatures. The remote monitoring module visualizes the calculated parameters obtained from the data processing module, focusing on the freezing risk index, moisture risk threshold temperature, minimum surface temperature, and temperature and humidity trends. These indicators are presented through a combination of numerical and graphical visualizations. The numerical values ​​directly indicate the current status, while the graphical representation shows the trend over the past 24 hours, helping managers quickly assess the risk development. The freezing risk index and moisture risk are displayed using a color-coded ribbon, automatically changing color according to the risk level (e.g., green - safe, yellow - alert, orange - warning, red - dangerous), providing a visual representation of the current risk status. The remote monitoring module is tightly integrated with the abnormal warning unit of the control decision module, receiving and displaying warning results in real time. Warning information includes the following elements: warning time, warning type (freeze / moisture protection), warning level, trigger condition, current value, threshold, trend, automatically executed control measures, and recommended actions. To ensure that early warning information is delivered to relevant personnel in a timely manner, the system has implemented a multi-channel notification mechanism, including interface notifications, mobile app push, voice calls, etc.

[0094] The remote monitoring module provides an intuitive device status monitoring interface, displaying the real-time operating status of controlled devices: Ventilation / Exhaust Systems: Displays operating status (on / off), operating hours, and operating mode; Dehumidifiers: Displays operating status, power level, dehumidification capacity, and operating hours; Heaters: Displays operating status, power level, surface temperature, and operating hours. The remote monitoring module also provides a parameter adjustment interface, allowing authorized users to modify system control parameters. Adjustable parameters primarily include: Antifreeze Parameters: Freeze Risk Index Trigger Threshold, Release Threshold, Safety Margin Temperature, and Trend Impact Factor; Moisture Protection Parameters: Condensation Safety Margin, Trend Impact Factor, Ventilation Safety Margin, and Moisture Protection Release Safety Margin; and Device Protection Parameters: Start / Stop Frequency Threshold, Hysteresis Time, and Run Time Limit.

[0095] The report generation module includes system operation log reports, which record the operating status and key events of each system component. Alarm record analysis reports focus on recording and analyzing various alarms generated by the system. The system automatically generates daily alarm reports, weekly alarm reports, and monthly alarm analysis reports. The environmental parameter historical trend analysis report provides analysis of long-term trends in various environmental parameters monitored by the system.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fire pump room antifreeze and moisture-proof system, characterized in that: include: Data acquisition module, used to collect pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature parameters; The data processing module is connected to the data acquisition module and is used to pre-process the pump room environmental parameters, outdoor environmental parameters and indoor facility surface temperature parameters; A control decision module is connected to the data processing module, and the control decision module includes: An abnormal warning unit is used to calculate the freezing risk index and moisture risk threshold temperature based on the preprocessed parameters, and compare the calculated freezing risk index and moisture risk threshold temperature with the preset thresholds to determine whether an antifreeze warning or moisture warning is required and output a warning result; The automatic control unit is connected to the abnormal warning unit and is used to adjust the operating status of relevant equipment in the pump room according to the warning results.

2. A fire pump room antifreeze and moisture-proof system according to claim 1, characterized in that: The pump room environmental parameters include indoor dry-bulb temperature, indoor relative humidity, pump room dew point temperature and pump room moisture content; the outdoor environmental parameters include outdoor dry-bulb temperature, outdoor relative humidity, outdoor dew point temperature and outdoor moisture content; the indoor facility surface temperature parameters include indoor water pipe wall temperature, indoor enclosure structure surface temperature, indoor bridge wall temperature and indoor electrical cabinet surface temperature.

3. A fire pump room antifreeze and moisture-proof system as claimed in claim 2, characterized in that: The execution process of the control decision module is as follows: (1) Calculate the freezing risk index and moisture risk threshold temperature based on the preprocessed parameters; (2) Compare the freezing risk index with the preset antifreeze trigger threshold to determine whether the current freezing risk index is greater than the preset antifreeze trigger threshold. If so, output an antifreeze warning, and the automatic control unit executes the antifreeze control strategy according to the antifreeze warning. If not, proceed to the next step. (3) Compare the minimum value of the current indoor facility surface temperature parameter with the moisture-proof risk threshold temperature to determine whether the minimum value of the current indoor facility surface temperature is less than the moisture-proof risk threshold temperature. If so, output a moisture-proof warning, and the automatic control unit executes the corresponding moisture-proof control strategy according to the moisture-proof warning. If not, maintain the status quo.

4. A fire pump room antifreeze and moisture-proof system as claimed in claim 3, characterized in that: The calculation formula for the freezing risk index is: in, is the freezing temperature of water; is the safety margin temperature; It is the minimum value between the indoor dry bulb temperature and the surface temperature of each device; is the rate of temperature change, in °C / h; is the trend influence coefficient, with a value of 0.2-0.

5.

5. The fire pump room antifreeze and moisture-proof system according to claim 3, characterized in that: The calculation formula for the moisture risk threshold temperature is: in, is the current dew point temperature, is the condensation safety margin, is the dew point temperature change rate, is the trend influence coefficient, and its value is 0.1-0.

3.

6. A fire pump room antifreeze and moisture-proof system as claimed in claim 4, characterized in that: The antifreeze control strategy includes: recording the current temperature value and timestamp, shutting down the supply / exhaust system, turning off the dehumidifier, turning on the heater, and continuing this state until the freezing risk index is less than the preset antifreeze release threshold.

7. The antifreeze and moisture-proof system for a fire pump room according to claim 5, characterized in that: In step (3), the automatic control unit executes the corresponding moisture-proof control strategy according to the moisture-proof warning, specifically including: A. When the outdoor humidity is higher than the indoor humidity, the abnormal warning unit outputs a first-class moisture warning. After receiving the first-class moisture warning, the automatic control unit issues a control instruction: shut down the air supply / exhaust system, turn on the dehumidifier, and turn off the heater. This state continues until the moisture warning release condition is met. B. When the indoor humidity is higher than the outdoor humidity and the outdoor temperature is higher than the sum of the indoor dew point temperature and the preset ventilation safety margin, the abnormal warning unit outputs a second-type moisture-proof warning. After receiving the second-type moisture-proof warning, the automatic control unit issues a control instruction: turning on the supply / exhaust system and turning off the dehumidifier. This state continues until the moisture-proof warning release condition is met; C. When the indoor humidity is greater than the outdoor humidity and the outdoor dry-bulb temperature is not greater than the sum of the indoor dew point temperature and the preset ventilation safety margin, the abnormal warning unit outputs a third-type moisture-proof warning. After receiving the third-type moisture-proof warning, the automatic control unit issues a control instruction: shut down the supply / exhaust system and turn on the dehumidifier. This state continues until the moisture-proof warning release condition is met.

8. The fire pump room antifreeze and moisture-proof system according to claim 7, characterized in that: The condition for lifting the moisture-proof warning is that the minimum surface temperature of the indoor facility is greater than the sum of the indoor dew point temperature and the preset lifting safety margin.

9. The fire pump room antifreeze and moisture-proof system according to claim 1, characterized in that: The control decision module also includes an equipment protection unit for monitoring the operating status of the dehumidifier, heater and supply / exhaust system, and adjusting their operation according to preset start-stop frequency thresholds and / or operating time limits.

10. The fire pump room antifreeze and moisture-proof system according to claim 1, characterized in that: The system further comprises: The remote monitoring module is used to display in real time the data collected by the data acquisition module, the data processed by the data processing module, the warning results output by the abnormal warning unit of the control decision module, and the status of the equipment controlled by the automatic control unit of the control decision module, and allows remote adjustment of control parameters; The report generation module is used to automatically generate system operation logs, alarm records and historical trend analysis reports of key environmental parameters.

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