Industrial confined space protection system and method based on high-cleanliness micro-positive-pressure fresh air

Abstract

The invention discloses an industrial confined space protection system based on high-cleanliness micro-positive-pressure fresh air, and relates to the technical field of digital management, and the industrial confined space protection system comprises a fresh air supply module used for supplying fresh air; the ventilation and positive pressure maintaining module comprises an air supply opening and an air return opening which are formed in the closed space and is used for forming organized airflow so that positive pressure can be maintained in the closed space; the multi-parameter monitoring module is used for collecting environmental parameters in real time; and the intelligent control module is used for adjusting the fresh air supply module based on the environmental parameters collected by the multi-parameter monitoring module in real time so as to maintain the target positive pressure and the cleanliness of the closed space. Closed-loop adjustment is conducted on the air supply amount through multi-parameter monitoring and intelligent control, the industrial closed space is in a slight positive pressure state for a long time, dust and external pollution gas are prevented from invading, in addition, fresh air and purified and dried compressed air are supplied in a combined mode and mixed according to a set proportion, and the air supply efficiency is improved. And the cleanliness and the dew point control effect are further improved.

Description

Technical Field

[0001] This invention relates to the field of digital management technology, and in particular to an industrial enclosed space protection system and method based on high-cleanliness micro-positive pressure fresh air. Background Technology

[0002] In industries such as coking, metallurgy, mining, and chemicals, enclosed industrial spaces like hydraulic power units and electrical rooms often house a large number of critical equipment, such as hydraulic power units, PLC control cabinets, high and low voltage electrical cabinets, and instrument panels. These spaces commonly present the following problems: 1. Dust intrusion: Coke dust, coal dust, and metal oxide dust can easily enter the room through door gaps, cable holes, and ventilation openings, and accumulate on the surface of electrical equipment, causing faults such as short circuits, overheating, tripping / shutdown; 2. Moisture and condensation issues: Due to the temperature difference between day and night, negative pressure ventilation, and the breathing effect, indoor moisture is difficult to expel in time, which easily leads to condensation at electrical components and terminals, causing a decrease in insulation performance, corrosion, and failure. 3. Inadequacy of traditional ventilation methods: Traditional air supply and exhaust systems are mostly simple air exchange or negative pressure exhaust, which are difficult to maintain stable positive pressure and cleanliness indoors; the fresh air volume and fan speed are usually fixed or roughly adjusted, which are difficult to adapt to changes in indoor pressure, dust and humidity. 4. Lack of high-cleanliness air source and intelligent collaborative control: Existing systems often do not perform fine filtration and drying of fresh air, and also lack a collaborative working mechanism with the compressed air system, making it difficult to achieve a high-cleanliness micro-positive pressure environment; at the same time, they lack multi-parameter monitoring and intelligent control, making it impossible to visualize the system status and provide risk warnings.

[0003] Therefore, there is an urgent need for an industrial enclosed space protection system and method that combines "high-cleanliness air source + micro-positive pressure control + fresh air energy saving + intelligent monitoring" to achieve active protection against dust and moisture in industrial enclosed spaces. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an industrial enclosed space protection system and method based on high-cleanliness micro-positive pressure fresh air.

[0005] To solve the above technical problems, the technical solution of the present invention is as follows: An industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air includes: Fresh air supply module, used to supply fresh air; The ventilation and positive pressure maintenance module includes air supply and return vents installed in the enclosed space to form an organized airflow and maintain positive pressure in the enclosed space. A multi-parameter monitoring module is used to collect environmental parameters in real time; In addition, an intelligent control module is used to adjust the fresh air supply module based on the environmental parameters collected in real time by the multi-parameter monitoring module in order to maintain the target positive pressure and cleanliness of the enclosed space.

[0006] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to the present invention, it further includes a compressed gas supply module and a mixing and distribution module. The compressed gas supply module is used to supply compressed air; The mixing and distribution module is connected to the fresh air supply module and the compressed gas supply module, and is used to mix fresh air and compressed air according to a set ratio or control strategy, and supply air to the enclosed space.

[0007] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to the present invention, the fresh air supply module includes a fresh air unit and a first filter component connected to the fresh air unit.

[0008] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to the present invention, the compressed gas supply module includes a compressed air supply end and a second filter component, a drying component and a pressure reducing and stabilizing component connected in sequence to the compressed air supply end. The mixing and distribution module includes a mixing chamber connected to the outlet end of the fresh air supply module and the outlet end of the compressed gas supply module, a mixing ratio regulating device for adjusting the ratio of fresh air and compressed air flow, and an air distribution pipeline for distributing the mixed gas to industrial enclosed spaces.

[0009] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to the present invention, the air supply outlet is located at the top or high position of the enclosed space, and the return air outlet is located at the bottom or low position of the enclosed space, so as to form an organized airflow from top to bottom.

[0010] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air described in this invention, the multi-parameter monitoring module includes pressure sensors, temperature and humidity sensors, dew point sensors, particle concentration sensors, and wind speed sensors installed inside, outside, and in the air duct of the enclosed space.

[0011] As a preferred embodiment of the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air described in this invention, it further includes a human-machine interaction module, which is used to display pressure, particle concentration, humidity and equipment operating status, and to interact with a host computer, digital twin platform or plant-level control system.

[0012] This invention also provides a method for protecting industrial enclosed spaces based on high-cleanliness micro-positive pressure fresh air, which is based on the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air described in any of the above claims, comprising: Set target positive pressure, cleanliness level, and humidity / dew point control targets for industrial confined spaces; The fresh air and compressed air are filtered and / or dried by the fresh air supply module and the compressed gas supply module to obtain gas that meets the cleanliness and dew point requirements. Based on target parameters and control strategies, fresh air and compressed air are mixed in proportion and delivered to industrial enclosed spaces through a mixing and distribution module. The system collects data in real time, including indoor and outdoor pressure difference, indoor temperature and humidity, dew point, particle concentration, and wind speed, through a multi-parameter monitoring module. The intelligent control module automatically adjusts the fresh air unit speed, compressed gas supply, and mixing ratio based on the collected parameters to maintain the indoor positive pressure and environmental parameters within the set range.

[0013] As a preferred embodiment of the industrial enclosed space protection method based on high-cleanliness micro-positive pressure fresh air described in this invention, it further includes: issuing an alarm message when the monitored parameters exceed a preset threshold, performing interlock control or degrading operation, and recording the operation data for subsequent analysis and optimization.

[0014] As a preferred embodiment of the industrial enclosed space protection method based on high-cleanliness micro-positive pressure fresh air described in this invention, the target positive pressure value of the industrial enclosed space is set to +50 to +150 Pa.

[0015] The beneficial effects of this invention are: (1) This invention uses multi-parameter monitoring and intelligent control to precisely control the pressure difference between indoor and outdoor spaces, so that the industrial enclosed space is kept under a slight positive pressure for a long time, avoiding the intrusion of dust and external polluting gases. In addition, the invention uses fresh air and compressed air that has been purified and dried to supply air and adjust the mixing ratio to enhance the cleanliness and dew point control capabilities under high dust and high humidity conditions.

[0016] (2) The present invention ensures that the cleanliness of the gas source and the dew point meet the requirements through filtration and drying measures, and, in conjunction with environmental monitoring and control, keeps the indoor particle concentration and humidity within a controllable range.

[0017] (3) Through multi-parameter monitoring and human-machine interface display, the operator can keep track of the indoor environment status and equipment operation status in real time, which is conducive to maintenance management and fault diagnosis.

[0018] (4) This invention can be widely used for environmental protection in various industrial enclosed spaces such as hydraulic stations, electrical rooms, instrument rooms, and control rooms in industries such as coking, metallurgy, and mining. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of an industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air provided by the present invention; Figure 2 A schematic diagram illustrating the principle of the mixing and distribution module in the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air provided by the present invention; Figure 3 A schematic diagram of the structure of the multi-parameter monitoring module in the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air provided by the present invention; Figure 4 A schematic diagram of the control logic for an industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air provided by the present invention; Figure 5 This is a schematic diagram of the human-computer interaction interface in this invention. Detailed Implementation

[0021] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the industrial enclosed space protection system based on high-cleanliness, slightly positive-pressure fresh air provided in this application. The system includes: a fresh air supply module, a ventilation and positive pressure maintenance module, a multi-parameter monitoring module, and an intelligent control module. The intelligent control module controls the fresh air supply module based on environmental parameters collected by the multi-parameter monitoring module, ensuring the industrial enclosed space maintains a consistently slightly positive pressure.

[0023] Specifically, the fresh air supply module is used to supply fresh air. This module includes a fresh air unit and a first filter assembly connected to the unit. The fresh air unit uses a permanent magnet synchronous motor and is equipped with a servo controller to automatically adjust the fan speed based on the indoor and outdoor pressure difference and environmental parameters.

[0024] Preferably, the aforementioned fresh air supply module may also include a drying component for drying the fresh air supplied by the fresh air unit.

[0025] The ventilation and positive pressure maintenance module includes an air supply vent located at the top or high position of the enclosed space and a return air vent located at the bottom or low position of the enclosed control, which is used to form an organized airflow from top to bottom to maintain a slight positive pressure in the room.

[0026] The multi-parameter monitoring module is used to collect environmental parameters in real time. Specifically, the multi-parameter monitoring module includes pressure sensors, temperature and humidity sensors, dew point sensors, particle concentration sensors, and wind speed sensors installed inside, outside, and in air ducts of enclosed spaces.

[0027] The intelligent control module is used to adjust the fresh air supply module based on the environmental parameters collected in real time by the multi-parameter monitoring module in order to maintain the target positive pressure and cleanliness of the enclosed space.

[0028] For a better option, see [link to previous section]. Figure 1 The aforementioned industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air also includes a compressed gas supply module and a mixing and distribution module. The compressed gas supply module supplies compressed air and specifically includes a compressed air supply end and, sequentially connected to the compressed air supply end, a second filter assembly, a drying assembly, and a pressure reducing and stabilizing assembly. The compressed air supplied by the compressed air supply end first passes through the second filter assembly, then enters the drying assembly for drying. The dried compressed air then passes through a pressure reducing valve and a pressure stabilizing valve, ultimately outputting compressed air with a dew point not higher than -20℃ and a particle size not greater than 0.1μm.

[0029] The mixing and distribution module connects to the fresh air supply module and the compressed gas supply module, and is used to mix fresh air and compressed air according to a set ratio or control strategy, and supply the air to the enclosed space. The mixing and distribution module includes a mixing chamber, a mixing ratio adjustment device, and air distribution piping. The mixing chamber is connected to the outlets of both the fresh air supply module and the compressed gas supply module for mixing the fresh air and compressed air. The mixing ratio adjustment device is used to regulate the flow ratio of fresh air and compressed air. The air distribution piping includes multiple air outlets for distributing the mixed gas to the industrial enclosed space.

[0030] The intelligent control module connects to the fresh air supply module, compressed gas supply module, and multi-parameter monitoring module. It automatically adjusts the fresh air unit speed, compressed gas supply volume, and mixing ratio based on real-time monitoring data to maintain the target positive pressure and cleanliness of the industrial enclosed space. Specifically, the intelligent control module is configured to adjust the fresh air unit speed and / or the output pressure and flow rate of the compressed gas supply module based on the difference between indoor and outdoor pressure or a reference pressure, keeping the indoor-outdoor pressure difference within the range of +50 to +150 Pa. Simultaneously, it adjusts the mixing ratio adjustment component settings based on indoor temperature, humidity, dew point, and particulate matter concentration parameters to maintain air quality within a preset range.

[0031] Preferably, the intelligent control module is equipped with an energy-saving operation mode, which reduces the speed of the fresh air fan and / or the supply of compressed gas when the doors and windows of the industrial enclosed space are closed, the number of people is small, and the environmental parameters are stable, while maintaining the pressure difference and air quality inside and outside the industrial enclosed space within the allowable range, so as to reduce operating energy consumption.

[0032] In addition, the aforementioned industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air also includes a human-machine interface (HMI) module. This HMI module displays pressure, particle concentration, humidity, equipment operating status, and alarm information, and interacts with a host computer, digital twin platform, or plant-level control system. Specifically, the HMI module is configured to display at least one of the following: indoor and outdoor pressure, indoor temperature and humidity, indoor particulate matter concentration, compressed gas supply status, fresh air unit operating status, alarm information, and historical operating trends. It can also upload data to the plant's host computer system or digital twin platform.

[0033] This application also provides a method for protecting industrial enclosed spaces based on high-cleanliness micro-positive pressure fresh air, which is based on the aforementioned industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air. The method specifically includes the following steps: Step S101: Set the target positive pressure value, cleanliness level, and humidity / dew point control target for the industrial enclosed space.

[0034] Step S102: The fresh air and compressed air are filtered and / or dried through the fresh air supply module and the compressed gas supply module to obtain gas that meets the cleanliness and dew point requirements.

[0035] Step S103: Based on the target parameters and control strategy, the fresh air and compressed air are mixed in proportion and delivered to the industrial enclosed space through the mixing and distribution module.

[0036] Step S104: Real-time data collection of indoor and outdoor pressure difference, indoor temperature and humidity, dew point, particle concentration, and wind speed via a multi-parameter monitoring module.

[0037] Step S105: The intelligent control module automatically adjusts the fresh air unit speed, compressed gas supply and mixing ratio according to the collected parameters to maintain the indoor positive pressure and environmental parameters within the set range.

[0038] Step S106: When the monitored parameters exceed the preset threshold, an alarm message is issued, and if necessary, interlock control or degraded operation is performed, and the operation data is recorded for subsequent analysis and optimization.

[0039] The above technical solution will be further explained below through specific embodiments.

[0040] Example 1: Protection System for Hydraulic Station and Electrical Room in a Coking Plant. A coking plant constructed a new hydraulic station and electrical room, both relatively enclosed spaces, housing critical equipment such as hydraulic stations, electrical cabinets, PLC control cabinets, and instrument panels.

[0041] 1. System Configuration: Fresh air sampling ports are set up outside the factory area. The fresh air unit uses a 1.5 kW permanent magnet synchronous motor and is equipped with a servo controller. The fresh air filtration components include an F7 grade medium efficiency filter and an H11 grade high efficiency filter. The compressed air in the plant area is processed by a coarse filter, a fine filter and a dryer, and then output to the mixing and distribution module through a pressure reducing valve and a pressure regulating valve; Air supply vents are installed at the top of the hydraulic station room and electrical room, and return air vents are installed on the ground or at a low position to form a top-down airflow organization.

[0042] 2. Control target setting: The target for indoor-outdoor pressure difference is +80 Pa, and the allowable range is +50 to +120 Pa. The target for indoor particulate matter concentration is to be below a certain preset level (e.g., PM2.5 and PM10). The indoor relative humidity should be controlled between 40% and 70%.

[0043] 3. Operation process: The intelligent control module automatically adjusts the speed of the fresh air unit based on the indoor and outdoor pressure difference, and activates compressed air compensation when the fresh air adjustment is insufficient. The multi-parameter monitoring module collects indoor and outdoor pressure, indoor temperature and humidity, and particulate matter concentration in real time, and transmits the data to the controller. The controller adjusts the mixing ratio and air volume according to environmental parameters to ensure that the indoor environment is within the target range.

[0044] 4. Running results: After being put into operation, the pressure difference between indoors and outdoors has been basically stabilized at around +80 Pa. Dust inside the electrical room has been significantly reduced, and there is basically no visible dust accumulation on the surface of important electrical equipment. During the high humidity season, there is no obvious condensation indoors, and corrosion of the control cabinet has been significantly reduced.

[0045] Therefore, the technical solution of this application precisely controls the pressure difference between indoors and outdoors through multi-parameter monitoring and intelligent control, so that the industrial enclosed space is kept at a slight positive pressure for a long time, avoiding the intrusion of dust and external polluting gases. In addition, it uses a combination of fresh air and purified and dried compressed air for air supply and adjusts the mixing ratio. At the same time, it ensures that the cleanliness of the air source and the dew point meet the requirements through filtration and drying measures. With the help of environmental monitoring and control, the indoor particle concentration and humidity are kept within a controllable range.

[0046] In addition to the above embodiments, the present invention may have other implementation methods; all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. An industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air, characterized in that: include: Fresh air supply module, used to supply fresh air; The ventilation and positive pressure maintenance module includes air supply and return vents installed in the enclosed space to form an organized airflow and maintain positive pressure in the enclosed space. A multi-parameter monitoring module is used to collect environmental parameters in real time; In addition, an intelligent control module is used to adjust the fresh air supply module based on the environmental parameters collected in real time by the multi-parameter monitoring module in order to maintain the target positive pressure and cleanliness of the enclosed space.

2. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 1, characterized in that: It also includes a compressed gas supply module and a mixing and distribution module; The compressed gas supply module is used to supply compressed air; The mixing and distribution module is connected to the fresh air supply module and the compressed gas supply module, and is used to mix fresh air and compressed air according to a set ratio or control strategy, and supply air to the enclosed space.

3. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 1, characterized in that: The fresh air supply module includes a fresh air unit and a first filter component connected to the fresh air unit.

4. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 2, characterized in that: The compressed gas supply module includes a compressed air supply end and a second filter component, a drying component, and a pressure reducing and stabilizing component connected in sequence to the compressed air supply end. The mixing and distribution module includes a mixing chamber connected to the outlet end of the fresh air supply module and the outlet end of the compressed gas supply module, a mixing ratio regulating device for adjusting the ratio of fresh air and compressed air flow, and an air distribution pipeline for distributing the mixed gas to industrial enclosed spaces.

5. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 1, characterized in that: The air supply outlet is located at the top or high position of the enclosed space, and the return air outlet is located at the bottom or low position of the enclosed space, in order to form an organized airflow from top to bottom.

6. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 1, characterized in that: The multi-parameter monitoring module includes pressure sensors, temperature and humidity sensors, dew point sensors, particle concentration sensors, and wind speed sensors installed inside, outside, and in the air duct of the enclosed space.

7. The industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air according to claim 1, characterized in that: It also includes a human-machine interaction module, which is used to display pressure, particle concentration, humidity and equipment operating status, and to interact with the host computer, digital twin platform or plant-level control system.

8. A method for protecting industrial enclosed spaces based on high-cleanliness micro-positive pressure fresh air, which is based on the industrial enclosed space protection system based on high-cleanliness micro-positive pressure fresh air as described in any one of claims 2 to 7, characterized in that: include: Set target positive pressure, cleanliness level, and humidity / dew point control targets for industrial confined spaces; The fresh air and compressed air are filtered and / or dried by the fresh air supply module and the compressed gas supply module to obtain gas that meets the cleanliness and dew point requirements. Based on target parameters and control strategies, fresh air and compressed air are mixed in proportion and delivered to industrial enclosed spaces through a mixing and distribution module. The system collects data in real time, including indoor and outdoor pressure difference, indoor temperature and humidity, dew point, particle concentration, and wind speed, through a multi-parameter monitoring module. The intelligent control module automatically adjusts the fresh air unit speed, compressed gas supply, and mixing ratio based on the collected parameters to maintain the indoor positive pressure and environmental parameters within the set range.

9. The industrial enclosed space protection method based on high-cleanliness micro-positive pressure fresh air according to claim 8, characterized in that: Also includes: When the monitored parameters exceed the preset threshold, an alarm message is issued, interlock control or degraded operation is performed, and the operation data is recorded for subsequent analysis and optimization.

10. The industrial enclosed space protection method based on high-cleanliness micro-positive pressure fresh air according to claim 8, characterized in that: The target positive pressure value for industrial enclosed spaces is set to +50 to +150 Pa.

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