Long-distance fresh air system, interlocking control method and equipment

Abstract

The invention discloses a long-distance fresh air system and an interlocking control method and device. The long-distance fresh air system comprises a draught fan, a pipeline component and a control cabinet component. The starting end fan, the starting end connecting air pipe, the starting end plenum chamber, the long-distance air conveying pipe, the terminal plenum chamber, the terminal connecting air pipe, the terminal fan and the terminal air supply pipe are connected in sequence; the fluid sensors are respectively arranged in the starting end connecting air pipe and the terminal connecting air pipe; the starting end control cabinet is connected with the starting end fan through a communication control line; the terminal control cabinet is connected with the terminal fan through a communication control line; the starting end control cabinet, the terminal control cabinet and the data center are sequentially connected through optical fibers. The invention belongs to the field of fresh air transmission. According to the system provided by the invention, fresh air can be transmitted in an ultra-long distance, air supply to a building body in a mountain is realized, the volume of the fresh air can be flexibly adjusted, and an effective communication means is established for the fans at the two ends.

Description

Technical Field

[0001] The present invention relates to the field of fresh air transmission, and in particular to a long-distance fresh air system, a chain control method and equipment. Background Art

[0002] As an indoor air conditioning device, the main function of the fresh air system is to transport fresh air from the outside to the indoor through the operation of its built-in fan equipment. There are two main types of fresh air systems: ductless fresh air systems and ducted fresh air systems.

[0003] For some special buildings that require ultra-long-distance air supply, such as the national major scientific and technological infrastructure under construction, the frontier physics experimental facility for the extremely deep underground polar radiation background, which is based on this patent, is located in the middle of an ultra-long mountain tunnel buried at a depth of 2,400 meters. It is necessary to pass through a 10km tunnel to supply fresh air to the laboratory in the mountain. The existing fresh air system cannot meet the needs of ultra-long-distance fresh air delivery, and this problem must be solved innovatively. In view of this, it is urgent to propose a long-distance fresh air system to solve the above problems. Summary of the invention

[0004] The embodiments of the present invention solve the technical problem that the existing fresh air systems in the prior art cannot meet the demand for ultra-long distance fresh air delivery by providing a long-distance fresh air system, an interlocking control method and equipment, and achieve the technical effect of being able to deliver air over ultra-long distances.

[0005] In a first aspect, the present invention provides a long-distance fresh air system, the system comprising:

[0006] The long-distance fresh air system includes fans, pipeline components and control cabinet components, wherein the fans include the starting end fans and the terminal fans, the pipeline components include the starting end connecting air duct, the starting end static pressure box, the long-distance air supply pipe, the terminal connecting air duct, the terminal static pressure box, the fluid sensor and the terminal air supply pipe, and the control cabinet components include the starting end control cabinet, the communication control line, the optical fiber and the terminal control cabinet;

[0007] The connection order of each component is: starting end fan, starting end connecting air duct, starting end static pressure box, long distance air supply duct, terminal static pressure box, terminal connecting air duct, terminal fan, terminal air supply duct;

[0008] The fluid sensors are respectively arranged in the starting end connecting air duct and the terminal connecting air duct, and are used to monitor the air volume or air pressure in the starting end connecting air duct and the terminal connecting air duct;

[0009] The control cabinet at the starting end is connected to the fluid sensor in the air duct at the starting end through a communication control line, and the control cabinet at the starting end is connected to the fan at the starting end through a communication control line;

[0010] The terminal control cabinet is connected to the fluid sensor in the terminal connection air duct through a communication control line, and the terminal control cabinet is connected to the terminal fan through a communication control line;

[0011] The starting control cabinet, the terminal control cabinet and the data center are connected in sequence with optical fibers.

[0012] Further, regarding the types of fans, they include:

[0013] The type of fan at the starting end is a variable frequency fan;

[0014] The terminal fan is a fixed frequency fan.

[0015] Further, regarding the types of fans, they include:

[0016] The starting control cabinet, terminal control cabinet and data center all have built-in interlocking control modules;

[0017] The data center is used to obtain the operating parameters of the long-distance fresh air system and control the operation of the long-distance fresh air system.

[0018] In a second aspect, the present invention provides a chain control method, comprising:

[0019] Determine the number of fans at the starting end according to the design air volume requirements and start the fans at the starting end;

[0020] Determine the air supply time difference between the starting end fan and the terminal end fan, and determine the start time node of the terminal end fan according to the air supply time difference;

[0021] When the start time node is reached, the terminal fan is turned on and the starting end fan and the terminal fan are adjusted according to the wind parameters in the starting end connecting air duct and the wind parameters in the terminal connecting air duct. The wind parameters include wind pressure or air volume.

[0022] Further, according to the wind parameters in the wind duct connected to the starting end and the wind parameters in the wind duct connected to the terminal end, the fan at the starting end and the fan at the terminal end are adjusted, including:

[0023] When the wind pressure in the air duct connected at the starting end is less than the rated wind pressure in the air duct connected at the terminal end, adjusting the fan at the starting end and the fan at the terminal end so that the wind pressure in the air duct connected at the starting end is greater than the rated wind pressure in the air duct connected at the terminal end; and,

[0024] When the air volume in the air duct connected at the starting end is less than the rated air volume in the air duct connected at the terminal end, the fan at the starting end and the fan at the terminal end are adjusted so that the air volume in the air duct connected at the starting end is greater than the rated air volume in the air duct connected at the terminal end.

[0025] Furthermore, the formula for the air supply time difference includes:

[0026]

[0027] Where Δt is the air supply time difference, L is the length of the long-distance air supply pipe, A is the total area of ​​the cross section of the long-distance air supply pipe, n is the number of fans at the starting end in operation, and w is the total area of ​​the cross section of the long-distance air supply pipe. s is the air outlet speed of the fan at the starting end.

[0028] Furthermore, the method further comprises:

[0029] When the running time of the starting end fan or the terminal fan is greater than the preset running time, the corresponding starting end fan or the corresponding terminal fan is switched.

[0030] Further, including:

[0031] The total number of the starting-end fans is greater than the number of the starting-end fans in operation, and the number of the starting-end fans in operation is always consistent with the number of the terminal fans in operation.

[0032] Further, including:

[0033] When the target area is in a fire condition or post-disaster condition, all fans are controlled to turn on.

[0034] In a third aspect, the present invention provides an electronic device, comprising:

[0035] processor;

[0036] a memory for storing processor-executable instructions;

[0037] The processor is configured to execute to implement a linkage control method as provided in the first aspect.

[0038] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0039] A long-distance fresh air system, the system includes: the long-distance fresh air system includes a fan, a pipeline component and a control cabinet component, wherein the fan includes a starting end fan and a terminal fan, the pipeline component includes a starting end connecting air duct, a starting end static pressure box, a long-distance air supply pipe, a terminal connecting air duct, a terminal static pressure box, a fluid sensor and a terminal air supply pipe, and the control cabinet component includes a starting end control cabinet, a communication control line, an optical fiber and a terminal control cabinet; the connection order of each component is: starting end fan, starting end connecting air duct, starting end static pressure box, long-distance air supply pipe, terminal static pressure box, terminal connecting air duct, terminal fan, Terminal air supply duct; fluid sensors are respectively arranged in the starting end connecting duct and the terminal connecting duct, and are used to monitor the air volume or air pressure in the starting end connecting duct and the terminal connecting duct; the starting end control cabinet is connected to the fluid sensor in the starting end connecting duct through a communication control line, and the starting end control cabinet is connected to the starting end fan through a communication control line; the terminal control cabinet is connected to the fluid sensor in the terminal connecting duct through a communication control line, and the terminal control cabinet is connected to the terminal fan through a communication control line; the starting end control cabinet, the terminal control cabinet and the data center are connected in turn with optical fibers. The system provided by the present invention can transmit fresh air over ultra-long distances, realizes air supply to special scenes such as buildings (laboratories) in mountains, and can flexibly adjust the fresh air volume, and establish effective communication means for the fans at both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A schematic diagram of the structure of a long-distance fresh air system provided by the present invention;

[0042] Figure 2 A schematic flow chart of a chain control method provided by the present invention;

[0043] Figure 3 A schematic flow chart of another interlocking control method provided by the present invention;

[0044] Figure 4 The present invention provides a schematic structural diagram of an electronic device.

[0045] Reference numerals

[0046] 1-starting end fan, 2-starting end connecting air duct, 3-starting end static pressure box, 4-optical fiber, 5-starting end control cabinet, 6-long distance air supply duct, 7-terminal static pressure box, 8-terminal connecting air duct, 9-terminal fan, 10-terminal control cabinet, 11-data center, 12-fluid sensor, 13-communication control line, 14-terminal air supply duct. DETAILED DESCRIPTION

[0047] The embodiment of the present invention solves the technical problem that the existing fresh air systems in the prior art cannot meet the demand for ultra-long distance fresh air delivery by providing a long-distance fresh air system.

[0048] The technical solution of the embodiment of the present invention is to solve the above technical problems, and the overall idea is as follows:

[0049] A long-distance fresh air system, the system includes: the long-distance fresh air system includes a fan, a pipeline component and a control cabinet component, wherein the fan includes a starting end fan and a terminal fan, the pipeline component includes a starting end connecting air duct, a starting end static pressure box, a long-distance air supply pipe, a terminal connecting air duct, a terminal static pressure box, a fluid sensor and a terminal air supply pipe, and the control cabinet component includes a starting end control cabinet, a communication control line, an optical fiber and a terminal control cabinet; the connection order of each component is: starting end fan, starting end connecting air duct, starting end static pressure box, long-distance air supply pipe, terminal static pressure box, terminal connecting air duct, terminal fan, Terminal air supply duct; fluid sensors are respectively arranged in the starting end connecting air duct and the terminal connecting air duct, and are used to monitor the air volume or air pressure in the starting end connecting air duct and the terminal connecting air duct; the starting end control cabinet is connected to the fluid sensor in the starting end connecting air duct through a communicative control line, and the starting end control cabinet is connected to the starting end fan through a communicative control line; the terminal control cabinet is connected to the fluid sensor in the terminal connecting air duct through a communicative control line, and the terminal control cabinet is connected to the terminal fan through a communicative control line; the starting end control cabinet, the terminal control cabinet and the data center are connected in turn with optical fibers.

[0050] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0051] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0052] The present invention provides Figure 1 A long-distance fresh air system is shown, which includes a fan, a pipeline component and a control cabinet component.

[0053] The fan includes a starting end fan 1 and a terminal fan 9. The starting end fan 1 is a variable frequency fan; the terminal fan 9 is a fixed frequency fan. The starting end fan 1 can receive instructions from the starting end control cabinet 5 and operate according to the instructions. The terminal fan 9 can receive instructions from the terminal control cabinet 10 and operate according to the instructions.

[0054] The motor of a fixed-frequency fan runs at a fixed frequency, and the speed and air volume of a fixed-frequency fan are relatively constant and cannot be automatically adjusted according to demand; the motor of a variable-frequency fan can adjust the frequency through a frequency converter, thereby adjusting the speed and air volume of the fan, and can be adjusted according to actual needs.

[0055] The pipeline components include a starting end connecting air duct 2, a starting end static pressure box 3, a long-distance air supply pipe 6, a terminal connecting air duct 8, a terminal static pressure box 7, a fluid sensor 12 and a terminal air supply pipe 14.

[0056] The control cabinet components include a starting end control cabinet 5 , a communicative control line 13 , an optical fiber 4 and a terminal control cabinet 10 .

[0057] like Figure 1 As shown, the connection order of each component is: starting end fan 1, starting end connecting air duct 2, starting end static pressure box 3, long distance air supply pipe 6, terminal static pressure box 7, terminal connecting air duct 8, terminal fan 9, terminal air supply pipe 14.

[0058] The fluid sensor 12 is respectively disposed in the starting end connecting air duct 2 and the terminal connecting air duct 8 , and is used to monitor the air volume or air pressure in the starting end connecting air duct 2 and the terminal connecting air duct 8 .

[0059] The fluid sensor 12 may be an air volume sensor and an air pressure sensor. The air volume sensor is used to monitor the air volume, and the air pressure sensor is used to monitor the air pressure.

[0060] The starting end control cabinet 5 is connected to the fluid sensor 12 in the starting end connecting air duct 2 through the communication control line 13, and the starting end control cabinet 5 is connected to the starting end fan 1 through the communication control line 13. The starting end control cabinet 5 obtains the air volume and air pressure monitored by the fluid sensor 12 through the communication control line 13.

[0061] The terminal control cabinet 10 is connected to the fluid sensor 12 in the terminal connection air duct 8 through the communication control line 13, and the terminal control cabinet 10 is connected to the terminal fan 9 through the communication control line 13. The terminal control cabinet 10 obtains the air volume and air pressure monitored by the fluid sensor 12 through the communication control line 13.

[0062] The starting end control cabinet 5, the terminal control cabinet 10 and the data center 11 are connected in sequence with optical fiber 4. The starting end control cabinet 5, the terminal control cabinet 10 and the data center 11 are all built-in interlocking control modules; the data center 11 is used to obtain the operating parameters (air volume and air pressure) of the long-distance fresh air system and control the operation of the long-distance fresh air system. The built-in interlocking control module can strengthen the control of the long-distance fresh air system and facilitate the control of the long-distance fresh air system to operate. The following is a specific embodiment:

[0063] The application scenario of this embodiment is a deep underground laboratory located in the middle of an 18-kilometer-long tunnel in a mountain. In this application scenario, the long-distance air pipe 6 is made of high-density polyethylene and has a length of 9 kilometers.

[0064] When using a long-distance fresh air system, the order in which fresh air reaches the laboratory from the outside through various components is as follows: two (in this embodiment, the total number of variable frequency fans at the starting end is set to 4, and under normal working conditions, two units can meet the air volume design requirements) starting variable frequency fans 1 pump fresh air to the starting end connecting air duct 2, and then after the wind pressure is stabilized by the starting end static pressure box 3, it enters the 9km long high-density polyethylene long-distance air supply pipe 6, and then enters the terminal connecting air duct 8 after stabilizing the wind pressure through the terminal static pressure box 7. At this time, the two terminal fixed-frequency fans 9 are started to pump the fresh air to the terminal supply air duct 14, and finally the air is supplied into the laboratory through the terminal supply air duct 14.

[0065] The present invention also provides Figure 2 The interlocking control method shown in FIG. 1 is based on the long-distance fresh air system provided above, and includes steps S11-S13. The interlocking control method provided by the present invention can also be referred to in conjunction with Figure 3 :

[0066] Step S11, determining the number of fans at the starting end according to the design air volume requirement and starting the fans at the starting end.

[0067] Step S12, determining the air supply time difference between the starting end fan and the terminal end fan, and determining the start time node of the terminal end fan according to the air supply time difference.

[0068] Step S13, when the start time node is reached, the terminal fan is turned on and the starting end fan and the terminal fan are adjusted according to the wind parameters in the starting end connecting air duct and the wind parameters in the terminal connecting air duct, and the wind parameters include wind pressure or air volume.

[0069] Regarding step S11, the number of the starting-end fans is determined according to the design air volume requirement and the starting-end fans are started.

[0070] The design air volume requirement refers to the air volume requirement in the target site to be supplied. Specifically, the number of fans at the starting end that need to be started can be determined based on the rated power of the fans at the starting end and the design air volume requirement. The fans at the starting end can all be variable frequency fans of the same type. After determining the number of fans at the starting end that need to be started, the fans in this part can be started.

[0071] Regarding step S12, the air supply time difference between the starting end fan and the terminal end fan is determined, and the start time node of the terminal end fan is determined according to the air supply time difference.

[0072] The formula for air supply time difference includes:

[0073]

[0074] Where Δt is the air supply time difference, L is the length of the long-distance air supply pipe, A is the total area of ​​the cross section of the long-distance air supply pipe, n is the number of fans at the starting end in operation, and w is the total area of ​​the cross section of the long-distance air supply pipe. s is the air outlet speed of the fan at the starting end.

[0075] For example, if there are three long-distance air pipes, each with a circular cross-section and a diameter of 800 mm, the total cross-sectional area is 1.51 m 2 ;w s The air outlet speed of the fan at the starting end is set to 5.66 m / s in this embodiment. 3 / h; n is the number of fans running at the starting end, which is 2 in this embodiment. Therefore, in this embodiment, the calculated delayed start time Δt is 20 minutes.

[0076] Specifically, the time node for starting the fan at the starting end can be determined first, and the time node for starting the fan at the starting end plus the time node corresponding to the air supply time difference is the start time node of the terminal fan.

[0077] Regarding step S13, when the start time node is reached, the terminal fan is turned on and the starting end fan and the terminal fan are adjusted according to the wind parameters in the starting end connecting air duct and the wind parameters in the terminal connecting air duct, and the wind parameters include wind pressure or air volume.

[0078] Specifically, when the wind pressure in the air duct connected at the starting end is less than the rated wind pressure in the air duct connected at the terminal end, the fan at the starting end and the fan at the terminal end are adjusted so that the wind pressure in the air duct connected at the starting end is greater than the rated wind pressure in the air duct connected at the terminal end; and,

[0079] When the air volume in the air duct connected at the starting end is less than the rated air volume in the air duct connected at the terminal end, the fan at the starting end and the fan at the terminal end are adjusted so that the air volume in the air duct connected at the starting end is greater than the rated air volume in the air duct connected at the terminal end.

[0080] In addition, the method also includes:

[0081] When the running time of the starting end fan or the terminal fan is greater than the preset running time, the corresponding starting end fan or the corresponding terminal fan is switched. The preset running time can be two days. In other words, when the running time of a starting end fan is greater than two days, it is necessary to switch to other starting end fans that are not running. The terminal fan can perform similar operations. When the starting end fan and the terminal fan are reactivated, steps S11-S13 can be re-executed.

[0082] It can be understood that the total number of the starting-end fans is greater than the number of the starting-end fans in operation, and the number of the starting-end fans in operation is always consistent with the number of the terminal fans in operation.

[0083] To improve safety, when the target area is in a fire or post-disaster condition, all fans can be controlled to turn on. When a running fan fails, the failed fan can be stopped and the corresponding number of fault-free fans can be switched to operate.

[0084] In summary, a long-distance fresh air system includes: the long-distance fresh air system includes a fan, a pipeline component and a control cabinet component, wherein the fan includes a starting end fan and a terminal fan, the pipeline component includes a starting end connecting air duct, a starting end static pressure box, a long-distance air supply pipe, a terminal connecting air duct, a terminal static pressure box, a fluid sensor and a terminal air supply pipe, and the control cabinet component includes a starting end control cabinet, a communication control line, an optical fiber and a terminal control cabinet; the connection order of each component is: starting end fan, starting end connecting air duct, starting end static pressure box, long-distance air supply pipe, terminal static pressure box, terminal connecting air duct, terminal The fan and the terminal air supply duct; the fluid sensors are respectively arranged in the starting end connecting duct and the terminal connecting duct, and are used to monitor the air volume or air pressure in the starting end connecting duct and the terminal connecting duct; the starting end control cabinet is connected to the fluid sensor in the starting end connecting duct through a communication control line, and the starting end control cabinet is connected to the starting end fan through a communication control line; the terminal control cabinet is connected to the fluid sensor in the terminal connecting duct through a communication control line, and the terminal control cabinet is connected to the terminal fan through a communication control line; the starting end control cabinet, the terminal control cabinet and the data center are connected with optical fibers in turn. The system provided by the present invention can transmit fresh air over ultra-long distances, realizes air supply to special scenes such as buildings (laboratories) in mountains, and can flexibly adjust the fresh air volume, and establish effective communication means for the fans at both ends.

[0085] Based on the same inventive concept, the present invention also provides Figure 4 An electronic device as shown includes:

[0086] Processor 41;

[0087] A memory 42 for storing instructions executable by the processor 41;

[0088] The processor 41 is configured to execute to implement a linkage control method as provided above.

[0089] Since the electronic device introduced in this embodiment is an electronic device used to implement the information processing method in the embodiment of the present invention, based on the information processing method introduced in the embodiment of the present invention, a person skilled in the art can understand the specific implementation of the electronic device of this embodiment and its various variations, so how the electronic device implements the method in the embodiment of the present invention is not described in detail here. As long as the electronic device used by a person skilled in the art to implement the information processing method in the embodiment of the present invention, it belongs to the scope of protection of the present invention.

[0090] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0091] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0094] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0095] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A long-distance fresh air system, characterized in that: The system comprises: The long-distance fresh air system includes a fan, a pipeline component and a control cabinet component, wherein the fan includes a starting end fan and a terminal fan, the pipeline component includes a starting end connecting air duct, a starting end static pressure box, a long-distance air supply pipe, a terminal connecting air duct, a terminal static pressure box, a fluid sensor and a terminal air supply pipe, and the control cabinet component includes a starting end control cabinet, a communication control line, an optical fiber and a terminal control cabinet; The connection order of each component is: starting end fan, starting end connecting air duct, starting end static pressure box, long-distance air supply duct, terminal static pressure box, terminal connecting air duct, terminal fan, terminal air supply duct; The fluid sensor is respectively arranged in the starting end connecting air duct and the terminal connecting air duct, and is used to monitor the air volume or air pressure in the starting end connecting air duct and the terminal connecting air duct; The starting end control cabinet is connected to the fluid sensor in the starting end connecting air duct through a communication control line, and the starting end control cabinet is connected to the starting end fan through a communication control line; The terminal control cabinet is connected to the fluid sensor in the terminal connection air duct through a communication control line, and the terminal control cabinet is connected to the terminal fan through a communication control line; The starting end control cabinet, the terminal control cabinet and the data center are connected in sequence with optical fibers.

2. A long-distance fresh air system as claimed in claim 1, characterized in that: Regarding the types of fans, they include: The type of the fan at the starting end is a variable frequency fan; The terminal fan is a fixed-frequency fan.

3. A long-distance fresh air system as claimed in claim 1, characterized in that: Types of fans include: The starting end control cabinet, the terminal control cabinet and the data center all have built-in interlocking control modules; The data center is used to obtain the operating parameters of the long-distance fresh air system and control the operation of the long-distance fresh air system.

4. A chain control method, characterized in that: A long-distance fresh air system provided based on any one of claims 1 to 3, comprising: Determine the number of fans at the starting end according to the design air volume requirements and start the fans at the starting end; Determine the air supply time difference between the starting end fan and the terminal end fan, and determine the start time node of the terminal end fan according to the air supply time difference; When the start time node is reached, the terminal fan is turned on and the starting end fan and the terminal fan are adjusted according to the wind parameters in the starting end connecting air duct and the wind parameters in the terminal connecting air duct, where the wind parameters include wind pressure or air volume.

5. A chain control method as claimed in claim 4, characterized in that: According to the wind parameters in the wind duct connected to the starting end and the wind parameters in the wind duct connected to the terminal, the fan at the starting end and the fan at the terminal are adjusted, including: When the wind pressure in the air duct connected to the starting end is less than the rated wind pressure in the air duct connected to the terminal end, adjusting the fan at the starting end and the fan at the terminal end so that the wind pressure in the air duct connected to the starting end is greater than the rated wind pressure in the air duct connected to the terminal end; and, When the air volume in the air duct connected at the starting end is less than the rated air volume in the air duct connected at the terminal end, the fan at the starting end and the fan at the terminal end are adjusted so that the air volume in the air duct connected at the starting end is greater than the rated air volume in the air duct connected at the terminal end.

6. A chain control method as claimed in claim 4, characterized in that: The formula for air supply time difference includes: Where Δt is the air supply time difference, L is the length of the long-distance air supply pipe, A is the total area of ​​the cross section of the long-distance air supply pipe, n is the number of fans at the starting end in operation, and w is the total area of ​​the cross section of the long-distance air supply pipe. s is the air outlet speed of the fan at the starting end.

7. A chain control method as claimed in claim 4, characterized in that: The method further comprises: When the running time of the starting end fan or the terminal fan is greater than the preset running time, the corresponding starting end fan or the corresponding terminal fan is switched.

8. A chain control method as claimed in claim 4, characterized in that: include: The total number of the starting-end fans is greater than the number of the starting-end fans in operation, and the number of the starting-end fans in operation is always consistent with the number of the terminal fans in operation.

9. A chain control method as claimed in claim 4, characterized in that: include: When the target area is in a fire condition or post-disaster condition, all fans are controlled to turn on.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute to implement a linkage control method as claimed in any one of claims 4 to 9.

Images