Conventional relay logic ventilation fan control device capable of being started and stopped in grading and classification mode
By designing a hierarchical and categorized conventional relay logic ventilation fan control device, the problem of the lack of standardization in the fan control circuit of the building ventilation system was solved, achieving efficient design and production, and improving adaptability and convenience.
Patent Information
- Application Number
- CN202422957541.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The lack of standardization in the design of fan control loops in existing building ventilation systems means that each project needs to be redesigned, which is time-consuming, results in a variety of product styles that are difficult to adapt to different conditions, and leads to resource waste and inefficiency.
A hierarchical and categorized conventional relay logic ventilation fan control device was designed, including a fan control module, a control condition input module, and a signal output module. Standardized design and modular production are achieved through priority division and fixed interfaces.
It improves design and production efficiency, reduces design time and resource waste, enhances adaptability and ease of installation and commissioning, and lowers production costs.
Smart Images
Figure CN223621832U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building ventilation control technology, and in particular relates to a conventional relay logic ventilation fan control device with graded and typed start and stop. Background Technology
[0002] Ventilation systems are an essential part of buildings, playing a vital role in ensuring indoor air quality and safeguarding the safety of production and daily life. Larger buildings, underground structures, or buildings in special environments often rely on mechanical ventilation fans for air circulation and indoor-outdoor air exchange. These fans not only handle routine ventilation under normal conditions but also provide ventilation and shutdown functions in emergency situations, such as removing harmful gases and dust, and supplying or stopping ventilation for smoke extraction during fires. Therefore, correctly starting and stopping the fans according to control requirements is of paramount importance.
[0003] When designing wind turbine control loops, it is crucial to comprehensively consider the turbine's start-up and shutdown conditions. Currently, there are no universally approved, standardized products on the market. Although some industries have proposed typical design schemes that generally consider various conditions within their specific sectors, these schemes become unsuitable when applied across industries where the start-up and shutdown conditions change. Currently, in the hydropower and other power industries, wind turbine control loop design often requires a completely redesigned system for each turbine in every project. Therefore, the following problems commonly exist in wind turbine control during project implementation:
[0004] (1) Each project requires redesign, and each fan control needs to be designed separately, resulting in a low degree of standardization. The design of fan control conditions is greatly influenced by human factors. The ventilation system design schemes vary from project to project, and the ventilation system design for the same project often needs to be modified. This leads to frequent passive modifications to the fan control loop, making it difficult to guarantee design quality, and resulting in a lot of design time and affecting the project schedule.
[0005] (2) There are too many styles of product design. Basically, the control circuit of each type of fan is different. There are dozens of forms of fan control boxes in a medium-sized or larger hydropower project. They are not interchangeable. Once the upstream design changes, they have to be redesigned.
[0006] (3) The fan control device also needs to be customized according to the design results, resulting in a large variety of product styles, and there is no substitute for each other. Once the control scheme changes, the already produced control device is difficult to apply, and it is necessary to re-purchase and re-produce, resulting in a waste of manpower, materials and funds.
[0007] (4) The production process is time-consuming. Each project requires the manufacturer to produce according to the design unit's plan. There are too many styles of electrical control boxes for each project, and internal wiring must be done according to different plans. The production process is time-consuming and inefficient.
[0008] (5) Installation and commissioning time is required. There are too many styles of fan control boxes for each project, and they are all different. During the on-site installation and commissioning, it is necessary to familiarize yourself with the design scheme and control device one by one. If a problem occurs, the internal circuit wiring must be checked one by one. Summary of the Invention
[0009] The technical problem to be solved by this utility model is to provide a conventional relay logic ventilation fan control device with standardized design and wide applicability, which is based on graded and typed start-stop.
[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0011] The conventional relay logic ventilation fan control device with graded and typed start-stop mainly consists of a fan control module, a control condition input module, and a signal output module;
[0012] The wind turbine control module mainly consists of 8 branches, namely, the 1# wind turbine control branch, the 1# wind turbine operation indication branch, the 1# wind turbine electrical fault monitoring branch, the 1# wind turbine stop signal extension branch, the 2# wind turbine control branch, the 2# wind turbine operation indication branch, the 2# wind turbine electrical fault monitoring branch, and the 2# wind turbine stop signal extension branch.
[0013] The control condition input module mainly consists of three loops: priority 1 control condition input loop, priority 2 control condition input loop, and priority 3 control condition input loop; among them,
[0014] Priority 1 control condition input circuit includes 8 branches, namely, the start / stop branch of single signal dual control with holding type, the start branch of instantaneous or holding type single signal single control, the stop branch of instantaneous or holding type single signal single control, the start / stop signal extension branch, the start signal extension branch, the stop signal extension branch, the fire manual control extension circuit of the holding type single signal single control start of fan #1 branch and the holding type single signal single control start of fan #2 branch;
[0015] The priority 2 control condition input loop includes 3 branches: instantaneous dual-signal dual-control start branch, instantaneous dual-signal dual-control stop branch, and instantaneous or holding single-signal single-control start branch.
[0016] The priority 3 control condition input loop includes 8 branches: local manual start / stop branch, remote holding type start / stop branch, remote operation indication branch, LCU remote control switching branch, local control switching branch; LCU remote control - instantaneous dual signal dual control start branch, LCU remote control - instantaneous dual signal dual control stop branch, and remote manual control - instantaneous holding type start / stop branch.
[0017] The signal output module mainly consists of fan operation lead-out contacts, linkage control lead-out contacts, and signal loops: among which,
[0018] The fan operation lead-out contact includes two sets of lead-out contacts, each set consisting of the No. 1 fan operation lead-out contact and the No. 2 fan operation lead-out contact;
[0019] The linkage control lead-out contacts consist of two pairs of lead-out contacts. One pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #1 and the lead-out contact for the stop linkage control of fan #1; the other pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #2 and the lead-out contact for the stop linkage control of fan #2.
[0020] The signal loop includes 12 branches, namely: control power failure signal branch, local position signal branch, remote position signal branch, No. 1 fan failure signal branch, No. 1 fan operation signal branch, No. 1 fan stop signal branch, No. 2 fan failure signal branch, No. 2 fan operation signal branch, No. 2 fan stop signal branch, start / stop signal branch, start signal branch, and stop signal branch.
[0021] In the control branch and operation indication branch of fan #1, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 1KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 1K1, 1KB11, and 1K3, the closing position auxiliary contact of circuit breaker 1QF, and the coil of contactor 1QC; the rear ends of the normally open contacts of relays KA11, 1KH1, and 1K1, and the front ends of the normally open contacts of relay 1KB11 are connected in parallel; the coil of contactor 1QC, the coil of relay 1K2, the operation indicator light 1HG1, the operation indicator light 1HG1 of remote button box 1, and the operation indicator light 1HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62;
[0022] In the electrical fault monitoring branch of wind turbine #1, the auxiliary contact of the open position of circuit breaker 1QF and the front end of the normally open contact of thermal relay 1KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of circuit breaker 1QF and the normally open contact of thermal relay 1KTH are connected in parallel with the coil of relay 1K1, fault indicator 1HY1, fault indicator 1HY1 of remote button box 1, and the front end of fault indicator 1HY1 of remote button box 2; the rear end of the coil of relay 1K1, fault indicator 1HY1, fault indicator 1HY1 of remote button box 1, and fault indicator 1HY1 of remote button box 2 are connected in parallel and then connected to the neutral wire L62.
[0023] In the extended branch of the stop signal for fan #1, the front end of the external stop command contact is connected to the live wire L61, and the rear end is connected to the front end of the coil of relay 1K3. The rear end of the coil of relay 1K3 is connected to the neutral wire L62.
[0024] In the control branch and operation indication branch of fan #2, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 2KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 2K1, 2KB11, and 2K3, the closing position auxiliary contact of circuit breaker 2QF, and the coil of contactor 2QC; the rear ends of the normally open contacts of relays KA11, 2KH1, and 2K1, and the front ends of the normally open contacts of relay 2KB11 are connected in parallel; the coil of contactor 2QC, the coil of relay 2K2, the operation indicator light 2HG1, the operation indicator light 2HG1 of remote button box 1, and the front ends of the operation indicator light 2HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62;
[0025] In the electrical fault monitoring branch of wind turbine #2, the auxiliary contact of the open position of circuit breaker 2QF and the front end of the normally open contact of thermal relay 2KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of circuit breaker 2QF and the normally open contact of thermal relay 2KTH are connected in parallel with the coil of relay 2K1, fault indicator 2HY1, the front end of fault indicator 2HY1 of remote button box 1 and remote button box 2; the rear end of the coil of relay 2K1, fault indicator 2HY1, the front end of fault indicator 2HY1 of remote button box 1 and remote button box 2 are connected in parallel and then connected to the neutral wire L62.
[0026] In the extended branch of the stop signal for fan #2, the front end of the external stop command contact is connected to the live wire L61, and the rear end is connected to the front end of the relay 2K3 coil. The rear end of the relay 2K3 coil is connected to the neutral wire L62.
[0027] The fan control module has a parallel control power monitoring branch. The front end of the parallel connection is connected to the live wire L via circuit breaker QF61, and the rear end of the parallel connection is connected to the neutral wire N via circuit breaker QF61. The control power monitoring branch includes the power monitoring relay K0 and indicator light HW0 of the device body connected in parallel.
[0028] In the priority 1 control condition input loop:
[0029] ① In the start / stop branch of the single-signal dual-control type holding circuit, the external start / stop command contact, relay KC11,
[0030] The front ends of the normally open contacts of KC12 are connected in parallel to each other and then connected to the live wire L61; the rear ends of the normally open contacts of the external start / stop command contacts, relays KC11 and KC12 are connected in parallel to the front end of the coil of relay KA11; the rear end of the coil of relay KA11 is connected to the neutral wire L62.
[0031] ② In the instantaneous or holding type single-signal single-control starting branch, the front ends of the external start command contact, the normally open contacts of relays KC13 and KC11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC11 is connected to the front end of the reset button SB11; the rear ends of the external start command contact, the normally open contact of relay KC13, and the reset button SB11 are connected in parallel with the coil of relay KC11 and the front end of indicator light HY11; the coil of relay KC11 and the rear end of indicator light HY11 are connected in parallel and then connected to the neutral wire L62;
[0032] ③ In the instantaneous or holding type single-signal single-control stop branch, the front ends of the external stop command contact, the normally open contacts of relays KD11 and KB11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KB11 is connected to the front end of the reset button SB12; the rear ends of the external stop command contact, the normally open contact of relay KD11, and the reset button SB12 are connected in parallel with the front end of the coil of relay KB11; the rear end of the coil of relay KB11 is connected to the neutral wire L62.
[0033] ④ In the start / stop signal extension branch, the external start / stop command contact is connected to the live wire L61; external start
[0034] The stop command contact is connected in parallel with the coil of relay KC12 and the front end of indicator light HY12; the coil of relay KC12 and the rear end of indicator light HY12 are connected in parallel and then connected to the neutral wire L62;
[0035] ⑤ In the start signal extension branch, the external start command contact is connected to the live wire L61; the rear end of the external start command contact is connected in parallel with the coil of relay KC13 and the front end of indicator light HY13; the coil of relay KC13 and the rear end of indicator light HY13 are connected in parallel and then connected to the neutral wire L62.
[0036] ⑥ In the stop signal extension branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD11 coil; the rear end of the relay KD11 coil is connected to the neutral wire L62.
[0037] ⑦ The fire manual control extension circuit's holding-type single-signal single-control start No. 1 fan branch includes a fire manual control panel and relay 1KH1 coil connected in sequence;
[0038] ⑧ The single-signal single-control start-up branch of fan #2 includes a fire manual control panel and relay coil 2KH1 connected in sequence.
[0039] In the priority 2 control condition input loop:
[0040] ① In the instantaneous dual-signal dual-control start circuit, the external start command contact and the normally open contact of relay KA21.
[0041] The front ends are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KA21 is connected to the front end of the normally closed contact of relay KB21; the external start command contact, the rear end of the normally closed contact of relay KB21, and relay KA21 are connected to the front end of the normally closed contact of relay KB21.
[0042] The front ends of the coils are connected in parallel; the rear end of the relay KA21 coil is connected to the neutral wire L62.
[0043] ② In the instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the external stop command...
[0044] Connect the rear end of the contact to the front end of the relay KB21 coil; connect the rear end of the relay KB21 coil to the neutral wire L62; ③ In the instantaneous or holding type single-signal single-control start branch, the external start command contact and the front end of the normally open contact of the relay KA22 are connected in parallel and then connected to the live wire L61; connect the rear end of the normally open contact of the relay KA21 to the front end of the reset button SB21; connect the rear end of the external start command contact and the rear end of the reset button SB21 to the front end of the relay KA22 coil; connect the rear end of the relay KA22 coil to the neutral wire L62.
[0045] In the priority 3 control condition input loop:
[0046] ① In the local manual start / stop branch, the front end of the "local" contact of the local / remote switch SA1 is connected
[0047] Live wire L61; The rear end of the "local" contact of the local / remote switch SA1 is connected in parallel with the front end of the normally open contact of the local start button SBC1 and the relay KA31; The rear ends of the normally open contacts of the local start button SBC1 and the relay KA31 are connected in parallel and then sequentially connected to the local stop button SBO1 and the coil of the relay KA31; the relay KA31
[0048] The coil is connected to the neutral wire L62 at the rear end;
[0049] ② In the remote holding type start / stop branch, the front end of the "remote" contact of the local / remote switch SA1 is connected to
[0050] Connect the live wire L61; the rear end of the "remote" contact of the local / remote switch SA1 is connected in parallel with the front ends of the normally open contacts of three external start / stop command contacts from different sources, and relays KC32 and KC33; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally open contact of relay KC31; the three external start / stop command contacts from different sources...
[0051] The stop command contact, the rear end of the normally open contact of relay KC33, and the front end of the normally closed contact of relay KC31 are connected in parallel; the rear ends of one pair of normally open and normally closed contacts of relay KC31 are connected in parallel, and then connected to the local stop button.
[0052] SBO1 rear end and relay KA31 coil front end connected in parallel;
[0053] ③ In the remote operation indication branch, the remote button box 1 operation indicator HB1 and the remote button box 2 operation indicator
[0054] The front end of lamp HB1 is connected in parallel with the rear end of the "remote" contact of the local / remote switch SA1 and the front end of one pair of normally open and normally closed contacts of relay KC31; the remote button box 1 operates the indicator light HB1, and the remote button box 2...
[0055] The operation indicator light HB1 is connected in parallel to the neutral wire L62 at its rear end;
[0056] ④ In the LCU remote control switching branch, the external remote control command contact and the normally open contact of relay KC31 are...
[0057] The front ends of the relays are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC31 is connected to the front end of the normally closed contact of relay KD31; the external remote control command contact, the rear end of the normally closed contact of relay KD31, and the relay...
[0058] The front ends of the KC31 coils of the electrical appliances are connected in parallel; the rear end of the KC31 coil of the relay is connected to the neutral wire L62.
[0059] ⑤ In the local control switching branch, the external local control command contact is connected to the live wire L61; the external local control...
[0060] The rear end of the control command contact is connected to the front end of the relay KD31 coil; the rear end of the relay KD31 coil is connected to the neutral wire L62; ⑥ In the LCU remote control - instantaneous dual-signal dual-control start branch, the external start command contact and the front end of the normally open contact of relay KC32 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally closed contact of relay KD32; the rear end of the external start command contact and the rear end of the normally closed contact of relay KD32 are connected in parallel with the front end of the relay KC32 coil; the rear end of the relay KC32 coil is connected to the neutral wire L62;
[0061] ⑦ In the LCU remote control – instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD32 coil; the rear end of the relay KD32 coil…
[0062] Connect the neutral wire L62;
[0063] ⑧ In the remote manual control – instantaneous or hold-type start / stop branch, the remote button box 1 starts the circuit.
[0064] The normally open contacts of SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel to each other and then connected to the live wire L61; the normally open contacts of remote button box 1 start button SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel to each other and then connected to the remote button box 1 stop button SBO1, remote button box 2 stop button SBO1, and relay KC33 coil; the rear end of relay KC33 coil is connected to the neutral wire L62.
[0065] In the fan operation lead-out contact:
[0066] ①The No. 1 fan's operating lead-out contacts include two pairs of normally open contacts of relay 1K2;
[0067] ②The No. 2 fan's operating lead-out contacts include two pairs of normally open contacts of relay 2K2.
[0068] In the linkage control lead-out contacts:
[0069] ①The lead-out contact of the No. 1 fan operation linkage control is one pair of normally open contacts of relay 1K2;
[0070] ②The stop linkage control lead-out contact of fan #1 is one pair of normally closed contacts of relay 1K2;
[0071] ③The lead-out contact of the No. 2 fan operation linkage control is one pair of normally open contacts of relay 2K2;
[0072] ④ The stop linkage control lead-out contact of fan #2 is a pair of normally closed contacts of relay 2K2.
[0073] In the signal loop:
[0074] ① The control power supply fault signal branch includes the circuit breaker QF61 trip position contact and the power monitoring relay K0.
[0075] Parallel connection of disconnected contacts;
[0076] ② The local location signal branch includes the "local" contact of the local / remote switching switch SA1;
[0077] ③ The remote location signal branch includes the "remote" contact of the local / remote switching switch SA1;
[0078] ④ The fault signal branch of fan #1 includes the normally open contact of relay 1K1;
[0079] ⑤ The operating signal branch of fan #1 includes the normally open contact of contactor 1QC;
[0080] ⑥ The stop signal branch for fan #1 includes the normally open contact of relay 1K3;
[0081] ⑦ The fault signal branch of fan #2 includes the normally open contact of relay 2K1;
[0082] ⑧2# Fan operation signal branch includes the normally open contact of contactor 2QC;
[0083] ⑨ The stop signal branch for fan #2 includes the normally open contact of relay 2K3;
[0084] ⑩ The start / stop signal branch includes the normally open contact of relay KC12;
[0085] The 11-start signal branch includes the normally open contact of relay KC13;
[0086] The 12 stop signal branch includes the normally open contact of relay KD11.
[0087] The aforementioned ventilation fan control device also includes a metal housing, with various relays encapsulated inside the metal housing, and functional pressure plates, indicator lights, buttons, etc., embedded in the metal housing.
[0088] To address the problems existing in the design and use of current building ventilation control systems, the inventors designed a conventional relay logic ventilation fan control device with hierarchical and type-based start / stop functionality. It mainly consists of a fan control module, a control condition input module, and a signal output module. Taking two fans as an example, the fan control module mainly consists of 4 branches each for fan #1 and fan #2 (a total of 8 branches). The control condition input module includes three priority levels based on fan start / stop control requirements, with each priority level further divided into multiple branches according to different control types. Specifically, priority 1 control condition input loops mainly consist of 8 branches, priority 2 control condition input loops mainly consist of 3 branches, and priority 3 control condition input loops mainly consist of 8 branches. The signal output module mainly consists of 3 main branches, totaling 20 branches.
[0089] Compared with the prior art, the present invention has the following outstanding advantages:
[0090] (1) It has a wide range of applicable industries. Compared with conventional fan control logic circuits that are dedicated to a certain field, it downplays the specific conditions of fan control and focuses on the priority of start and stop conditions and signal types.
[0091] (2) Standardized design: control requirements for various priorities and signal types have been standardized into fixed interfaces. Designers only need to focus on the start-up and shutdown conditions of the wind turbine and design the corresponding interfaces, which reduces the time for loop design and improves the design quality.
[0092] (3) Easy to use: It is a packaged, pre-designed product that can be directly installed and used. The whole product is installed in a box (cabinet), and users can directly connect to the corresponding interface, which improves the ease of use.
[0093] (4) It is highly adaptable. When the fan control requirements or the fan power supply circuit changes, the corresponding interface connection scheme can be adjusted.
[0094] (5) It can be standardized and scaled up to improve production efficiency and reduce production costs.
[0095] (6) Convenient procurement. Both general basic solutions and derived typical solutions can be ordered directly. There are not many types of orders, and only the quantity needs to be determined. The various types are highly substitutable, avoiding the possibility of repeated modifications and procurement.
[0096] (7) During installation and commissioning, it is only necessary to connect the external interface of the device and test its correctness. There is no need to check the internal circuit, which improves the efficiency of installation and commissioning. Attached Figure Description
[0097] Figure 1 This is a schematic diagram of the structural principle of the relevant circuits of the fan control module of the conventional relay logic ventilation fan control device with graded and typed start-stop.
[0098] Figure 2 This is a schematic diagram of the structural principle of the priority 1 and priority 2 related circuits in the control condition input module of the conventional relay logic ventilation fan control device with graded and typed start-stop.
[0099] Figure 3 This is a schematic diagram of the structural principle of the priority 3 related circuit in the control condition input module of the conventional relay logic ventilation fan control device with graded and typed start-stop.
[0100] Figure 4 This is a schematic diagram of the structural principle of the signal output module related circuit of the conventional relay logic ventilation fan control device with graded and typed start-stop. Detailed Implementation
[0101] like Figures 1 to 4 As shown, this utility model is a conventional relay logic ventilation fan control device with graded and typed start-stop. It studies and analyzes the control conditions of the fan, extracts the key factors affecting the control circuit such as start-stop nature, priority, and contact form, and assembles relays, switching switches, terminals and other components into a circuit with fixed logic.
[0102] (1) Control conditions are divided into two main categories: start conditions and stop conditions.
[0103] (2) Prioritize the start and stop conditions, with three main priorities. Priority 1 is the highest, and the control loop executes the higher-priority instructions first.
[0104] (3) The contacts for start and stop conditions are classified into several types, including dual control and single control. Single control contacts are divided into two types: holding type and instantaneous type. They are also divided into two types: start and stop grouped and non-grouped. Different contact types correspond to different interfaces and drive their respective relays. After the relays are reactivated, the start and stop control of the fan is realized in the main control circuit.
[0105] (4) The internal circuits have been greatly optimized, the circuits are simple, the logic is clear, and they are easy to maintain.
[0106] (5) The control loop corresponds to a certain number of power supply loops for the fans, and a certain number of fans can be connected as needed, which can also adapt to changes in the number of power supply loops.
[0107] (6) Reserve different control command interfaces according to priority and control type. Connect when there is a corresponding control requirement so that the fan can meet the corresponding control requirements; unused interfaces are reserved as backups and will not affect the operation of the fan.
[0108] (7) Based on functional modular design, it has good scalability.
[0109] The circuit is encapsulated in a robust metal casing with good electromagnetic shielding and heat dissipation, forming an independent device. Standardized and fixed external interfaces, including input power interfaces, primary circuit output interfaces, various control condition input interfaces, and signal output interfaces, are provided and arranged in a hard-wired manner at the rear of the device, forming a standardized product. Users can directly connect the corresponding interfaces according to their functional requirements.
[0110] The device mainly consists of a fan control module, a control condition input module, and a signal output module; in addition, it also includes a metal housing, with various relays encapsulated inside the metal housing, and various functional pressure plates, indicator lights, buttons, etc. embedded in the metal housing.
[0111] The following embodiments use two fans as an example to illustrate the present invention in detail.
[0112] I. Fan Control Module
[0113] The fan control module is mainly used to execute corresponding operation instructions based on the specific priority and control type of the start / stop fan signal, and control the fan to start or stop.
[0114] The wind turbine control module mainly consists of eight branches: the #1 wind turbine control branch, the #1 wind turbine operation indicator branch, the #1 wind turbine electrical fault monitoring branch, the #1 wind turbine stop signal extension branch, the #2 wind turbine control branch, the #2 wind turbine operation indicator branch, the #2 wind turbine electrical fault monitoring branch, and the #2 wind turbine stop signal extension branch.
[0115] In the control branch and operation indication branch of fan #1, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 1KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 1K1, 1KB11, and 1K3, the closing position auxiliary contact of circuit breaker 1QF, and the coil of contactor 1QC; the rear ends of the normally open contacts of relays KA11, 1KH1, and 1K1, and the front ends of the normally open contacts of relay 1KB11 are connected in parallel; the coil of contactor 1QC, the coil of relay 1K2, the operation indicator light 1HG1, the operation indicator light 1HG1 of remote button box 1, and the operation indicator light 1HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62;
[0116] In the electrical fault monitoring branch of wind turbine #1, the auxiliary contact of the open position of circuit breaker 1QF and the front end of the normally open contact of thermal relay 1KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of circuit breaker 1QF and the normally open contact of thermal relay 1KTH are connected in parallel with the coil of relay 1K1, fault indicator 1HY1, fault indicator 1HY1 of remote button box 1, and the front end of fault indicator 1HY1 of remote button box 2; the rear end of the coil of relay 1K1, fault indicator 1HY1, fault indicator 1HY1 of remote button box 1, and fault indicator 1HY1 of remote button box 2 are connected in parallel and then connected to the neutral wire L62.
[0117] In the extended branch of the stop signal for fan #1, the front end of the external stop command contact is connected to the live wire L61, and the rear end is connected to the front end of the coil of relay 1K3. The rear end of the coil of relay 1K3 is connected to the neutral wire L62.
[0118] In the control branch and operation indication branch of fan #2, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 2KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 2K1, 2KB11, and 2K3, the closing position auxiliary contact of circuit breaker 2QF, and the coil of contactor 2QC; the rear ends of the normally open contacts of relays KA11, 2KH1, and 2K1, and the front ends of the normally open contacts of relay 2KB11 are connected in parallel; the coil of contactor 2QC, the coil of relay 2K2, the operation indicator light 2HG1, the operation indicator light 2HG1 of remote button box 1, and the front ends of the operation indicator light 2HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62;
[0119] In the electrical fault monitoring branch of wind turbine #2, the auxiliary contact of the open position of circuit breaker 2QF and the front end of the normally open contact of thermal relay 2KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of circuit breaker 2QF and the normally open contact of thermal relay 2KTH are connected in parallel with the coil of relay 2K1, fault indicator 2HY1, the front end of fault indicator 2HY1 of remote button box 1 and remote button box 2; the rear end of the coil of relay 2K1, fault indicator 2HY1, the front end of fault indicator 2HY1 of remote button box 1 and remote button box 2 are connected in parallel and then connected to the neutral wire L62.
[0120] In the extended branch of the stop signal for fan #2, the front end of the external stop command contact is connected to the live wire L61, and the rear end is connected to the front end of the relay 2K3 coil. The rear end of the relay 2K3 coil is connected to the neutral wire L62.
[0121] The fan control module has a parallel control power monitoring branch. The front end of the parallel connection is connected to the live wire L via circuit breaker QF61, and the rear end of the parallel connection is connected to the neutral wire N via circuit breaker QF61. The control power monitoring branch includes the power monitoring relay K0 and indicator light HW0 of the device body connected in parallel.
[0122] II. Control Condition Input Module
[0123] The control condition input module is mainly responsible for connecting the ventilation fan control device with the start / stop commands of other external equipment. In other words, external signals that need to be processed by the ventilation fan control device are received through the control condition input module.
[0124] The control condition input module mainly consists of three loops: Priority 1, Priority 2, and Priority 3. These loops prioritize the conditions that trigger the start / stop of the fan according to relevant specifications. Each priority level triggers different relays based on different types of conditions. External conditions use independent normally open / closed contacts. After various types of external conditions are connected to their respective input loops, the internal logic is triggered to execute the corresponding actions.
[0125] 2.1 Priority 1 Control Condition Input Loop
[0126] The priority 1 control condition input circuit includes 8 branches, namely, the start / stop branch with single signal dual control of holding type, the start branch with single signal single control of instantaneous or holding type, the stop branch with single signal single control of instantaneous or holding type, the start / stop signal extension branch, the start signal extension branch, the stop signal extension branch, the fire manual control extension circuit with single signal single control of holding type start of fan #1 branch, and single signal single control of holding type start of fan #2 branch.
[0127] ① In the start / stop branch of the single-signal dual-control type holding circuit, the external start / stop command contact, relay KC11,
[0128] The front ends of the normally open contacts of KC12 are connected in parallel to each other and then connected to the live wire L61; the rear ends of the normally open contacts of the external start / stop command contacts, relays KC11 and KC12 are connected in parallel to the front end of the coil of relay KA11; the rear end of the coil of relay KA11 is connected to the neutral wire L62.
[0129] ② In the instantaneous or holding type single-signal single-control starting branch, the front ends of the external start command contact, the normally open contacts of relays KC13 and KC11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC11 is connected to the front end of the reset button SB11; the rear ends of the external start command contact, the normally open contact of relay KC13, and the reset button SB11 are connected in parallel with the coil of relay KC11 and the front end of indicator light HY11; the coil of relay KC11 and the rear end of indicator light HY11 are connected in parallel and then connected to the neutral wire L62;
[0130] ③ In the instantaneous or holding type single-signal single-control stop branch, the front ends of the external stop command contact, the normally open contacts of relays KD11 and KB11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KB11 is connected to the front end of the reset button SB12; the rear ends of the external stop command contact, the normally open contact of relay KD11, and the reset button SB12 are connected in parallel with the front end of the coil of relay KB11; the rear end of the coil of relay KB11 is connected to the neutral wire L62.
[0131] ④ In the start / stop signal extension branch, the external start / stop command contact is connected to the live wire L61; external start
[0132] The stop command contact is connected in parallel with the coil of relay KC12 and the front end of indicator light HY12; the coil of relay KC12 and the rear end of indicator light HY12 are connected in parallel and then connected to the neutral wire L62;
[0133] ⑤ In the start signal extension branch, the external start command contact is connected to the live wire L61; the rear end of the external start command contact is connected in parallel with the coil of relay KC13 and the front end of indicator light HY13; the coil of relay KC13 and the rear end of indicator light HY13 are connected in parallel and then connected to the neutral wire L62.
[0134] ⑥ In the stop signal extension branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD11 coil; the rear end of the relay KD11 coil is connected to the neutral wire L62.
[0135] ⑦ The fire manual control extension circuit's holding-type single-signal single-control start No. 1 fan branch includes a fire manual control panel and relay 1KH1 coil connected in sequence;
[0136] ⑧ The fire manual control extension circuit's holding-type single-signal single-control start No. 2 fan branch includes a fire manual control panel and relay 2KH1 coil connected in sequence.
[0137] 2.2 Priority 2 Control Condition Input Loop
[0138] The priority 2 control condition input loop includes 3 branches: instantaneous dual-signal dual-control start branch, instantaneous dual-signal dual-control stop branch, and instantaneous or holding single-signal single-control start branch.
[0139] ① In the instantaneous dual-signal dual-control start branch, the external start command contact and the front end of the normally open contact of relay KA21 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KA21 is connected to the front end of the normally closed contact of relay KB21; the external start command contact and the rear end of the normally closed contact of relay KB21 are connected in parallel with the front end of the coil of relay KA21; the rear end of the coil of relay KA21 is connected to the neutral wire L62.
[0140] ② In the instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KB21 coil; the rear end of the relay KB21 coil is connected to the neutral wire L62.
[0141] ③ In the instantaneous or holding type single-signal single-control start branch, the external start command contact and the front end of the normally open contact of relay KA22 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KA21 is connected to the front end of reset button SB21; the rear end of the external start command contact and reset button SB21 are connected in parallel with the front end of relay KA22 coil; the rear end of relay KA22 coil is connected to the neutral wire L62.
[0142] 2.3 Priority 3 Control Condition Input Loop
[0143] The priority 3 control condition input loop includes 8 branches: local manual start / stop branch, remote holding type start / stop branch, remote operation indication branch, LCU remote control switching branch, local control switching branch; LCU remote control - instantaneous dual signal dual control start branch, LCU remote control - instantaneous dual signal dual control stop branch, and remote manual control - instantaneous holding type start / stop branch.
[0144] ① In the local manual start / stop branch, the front end of the "local" contact of the local / remote switch SA1 is connected to the live wire L61; the rear end of the "local" contact of the local / remote switch SA1 is connected in parallel with the front end of the normally open contact of the local start button SBC1 and the relay KA31; the rear ends of the normally open contacts of the local start button SBC1 and the relay KA31 are connected in parallel and then sequentially connected to the local stop button SBO1 and the coil of the relay KA31; the rear end of the relay KA31 coil is connected to the neutral wire L62.
[0145] ② In the remote holding type start / stop branch, the front end of the "remote" contact of the local / remote switch SA1 is connected to the live wire L61; the rear end of the "remote" contact of the local / remote switch SA1 is connected in parallel with the front ends of the normally open contacts of three external start / stop command contacts from different sources, and relays KC32 and KC33; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally open contact of relay KC31; the three external start / stop command contacts from different sources...
[0146] The stop command contact, the rear end of the normally open contact of relay KC33, and the front end of the normally closed contact of relay KC31 are connected in parallel; the rear ends of one pair of normally open and normally closed contacts of relay KC31 are connected in parallel, and then connected in parallel with the rear end of the local stop button SBO1 and the front end of the coil of relay KA31.
[0147] ③ In the remote operation indication branch, the front ends of the remote button box 1 operation indicator HB1 and the remote button box 2 operation indicator HB1 are connected in parallel with the rear end of the "remote" contact of the local / remote switch SA1 and the front ends of one pair of normally open and normally closed contacts of the relay KC31; the rear ends of the remote button box 1 operation indicator HB1 and the remote button box 2 operation indicator HB1 are connected in parallel to the neutral line L62.
[0148] ④ In the LCU remote control switching branch, the external remote control command contact and the front end of the normally open contact of relay KC31 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC31 is connected to the front end of the normally closed contact of relay KD31; the external remote control command contact and the rear end of the normally closed contact of relay KD31 are connected in parallel with the front end of the coil of relay KC31; the rear end of the coil of relay KC31 is connected to the neutral wire L62.
[0149] ⑤ In the local control switching branch, the external local control command contact is connected to the live wire L61; the rear end of the external local control command contact is connected to the front end of the relay KD31 coil; the rear end of the relay KD31 coil is connected to the neutral wire L62.
[0150] ⑥ In the LCU remote control-instantaneous dual-signal dual-control start branch, the external start command contact and the front end of the normally open contact of relay KC32 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally closed contact of relay KD32; the external start command contact and the rear end of the normally closed contact of relay KD32 are connected in parallel with the front end of the coil of relay KC32; the rear end of the coil of relay KC32 is connected to the neutral wire L62.
[0151] ⑦ In the LCU remote control-instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD32 coil; the rear end of the relay KD32 coil is connected to the neutral wire L62.
[0152] ⑧ In the remote manual control – instantaneous or hold-type start / stop branch, the remote button box 1 starts the circuit.
[0153] The normally open contacts of SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel to each other and then connected to the live wire L61; the normally open contacts of remote button box 1 start button SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel to each other and then connected to the remote button box 1 stop button SBO1, remote button box 2 stop button SBO1, and relay KC33 coil; the rear end of relay KC33 coil is connected to the neutral wire L62.
[0154] III. Signal Output Module
[0155] The signal output module is mainly responsible for sending fault signals and status signals of the fan and ventilation fan control device itself to the monitoring system, and providing linkage control contacts with external equipment such as fire dampers.
[0156] The signal output module mainly consists of fan operation lead-out contacts, linkage control lead-out contacts, and signal loops: among which,
[0157] The fan operation lead-out contact includes two sets of lead-out contacts, each set being the No. 1 fan operation lead-out contact and the No. 2 fan operation lead-out contact.
[0158] ①The No. 1 fan's operating lead-out contacts include two pairs of normally open contacts of relay 1K2;
[0159] ②The No. 2 fan's operating lead-out contacts include two pairs of normally open contacts of relay 2K2.
[0160] The linkage control lead-out contacts consist of two pairs of lead-out contacts. One pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #1 and the lead-out contact for the stop linkage control of fan #1; the other pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #2 and the lead-out contact for the stop linkage control of fan #2.
[0161] ①The lead-out contact of the No. 1 fan operation linkage control is one pair of normally open contacts of relay 1K2;
[0162] ②The stop linkage control lead-out contact of fan #1 is one pair of normally closed contacts of relay 1K2;
[0163] ③The lead-out contact of the No. 2 fan operation linkage control is one pair of normally open contacts of relay 2K2;
[0164] ④ The stop linkage control lead-out contact of fan #2 is a pair of normally closed contacts of relay 2K2.
[0165] The signal loop includes 12 branches, namely: control power failure signal branch, local position signal branch, remote position signal branch, No. 1 fan failure signal branch, No. 1 fan operation signal branch, No. 1 fan stop signal branch, No. 2 fan failure signal branch, No. 2 fan operation signal branch, No. 2 fan stop signal branch, start / stop signal branch, start signal branch, and stop signal branch.
[0166] ①The control power supply fault signal branch includes the circuit breaker QF61 trip position contact and the power monitoring relay K0 normally closed contact connected in parallel;
[0167] ② The local location signal branch includes the "local" contact of the local / remote switching switch SA1;
[0168] ③ The remote location signal branch includes the "remote" contact of the local / remote switching switch SA1;
[0169] ④ The fault signal branch of fan #1 includes the normally open contact of relay 1K1;
[0170] ⑤ The operating signal branch of fan #1 includes the normally open contact of contactor 1QC;
[0171] ⑥ The stop signal branch for fan #1 includes the normally open contact of relay 1K3;
[0172] ⑦ The fault signal branch of fan #2 includes the normally open contact of relay 2K1;
[0173] ⑧2# Fan operation signal branch includes the normally open contact of contactor 2QC;
[0174] ⑨ The stop signal branch for fan #2 includes the normally open contact of relay 2K3;
[0175] ⑩ The start / stop signal branch includes the normally open contact of relay KC12;
[0176] The 11-start signal branch includes the normally open contact of relay KC13;
[0177] The 12 stop signal branch includes the normally open contact of relay KD11.
[0178] The above embodiments are mainly designed for the control of two wind turbines and are not intended to limit the invention in any way. The signal inputs and command outputs required for different wind turbine control will vary. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.
Claims
1. A conventional relay logic ventilation fan control device with graded and typed start / stop, characterized in that... It mainly consists of a fan control module, a control condition input module, and a signal output module; The wind turbine control module mainly consists of 8 branches, namely, the 1# wind turbine control branch, the 1# wind turbine operation indication branch, the 1# wind turbine electrical fault monitoring branch, the 1# wind turbine stop signal extension branch, the 2# wind turbine control branch, the 2# wind turbine operation indication branch, the 2# wind turbine electrical fault monitoring branch, and the 2# wind turbine stop signal extension branch. The control condition input module mainly consists of three loops: a priority 1 control condition input loop, a priority 2 control condition input loop, and a priority 3 control condition input loop; among which... The priority 1 control condition input circuit includes 8 branches, namely, the start / stop branch of the holding type single signal dual control, the start branch of the instantaneous or holding type single signal single control, the stop branch of the instantaneous or holding type single signal single control, the start / stop signal extension branch, the start signal extension branch, the stop signal extension branch, the fire manual control extension circuit of the holding type single signal single control start of fan #1 branch and the holding type single signal single control start of fan #2 branch; The priority 2 control condition input loop includes 3 branches, namely, instantaneous dual-signal dual-control start branch, instantaneous dual-signal dual-control stop branch, and instantaneous or holding single-signal single-control start branch; The priority 3 control condition input loop includes 8 branches, namely: local manual start / stop branch, remote hold-type start / stop branch, remote operation indication branch, LCU remote control switching branch, local control switching branch; LCU remote control - instantaneous dual-signal dual-control start branch, LCU remote control - instantaneous dual-signal dual-control stop branch, and remote manual control - instantaneous hold-type start / stop branch; The signal output module mainly consists of a fan operation lead-out contact, a linkage control lead-out contact, and a signal circuit. The fan operation lead-out contact includes two sets of lead-out contacts, each set being the No. 1 fan operation lead-out contact and the No. 2 fan operation lead-out contact. The linkage control lead-out contacts consist of two pairs of lead-out contacts. One pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #1 and the lead-out contact for the stop linkage control of fan #1; the other pair of lead-out contacts is the lead-out contact for the operation linkage control of fan #2 and the lead-out contact for the stop linkage control of fan #2. The signal loop includes 12 branches, namely, control power failure signal branch, local position signal branch, remote position signal branch, No. 1 fan failure signal branch, No. 1 fan operation signal branch, No. 1 fan stop signal branch, No. 2 fan failure signal branch, No. 2 fan operation signal branch, No. 2 fan stop signal branch, start / stop signal branch, start signal branch, and stop signal branch.
2. The ventilation fan control device according to claim 1, characterized in that: In the No. 1 fan control branch and the No. 1 fan operation indication branch, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 1KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 1K1, 1KB11, and 1K3, the closing position auxiliary contact of circuit breaker 1QF, and the coil of contactor 1QC; the rear ends of the normally open contacts of relays KA11, 1KH1, and 1K1, and the front ends of the normally open contacts of relay 1KB11 are connected in parallel; the front ends of the coil of contactor 1QC, the coil of relay 1K2, the operation indicator light 1HG1, the operation indicator light 1HG1 of remote button box 1, and the operation indicator light 1HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62; In the electrical fault monitoring branch of the No. 1 wind turbine, the auxiliary contact of the open position of the circuit breaker 1QF and the front end of the normally open contact of the thermal relay 1KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of the circuit breaker 1QF and the normally open contact of the thermal relay 1KTH are connected in parallel with the coil of the relay 1K1, the fault indicator light 1HY1, the fault indicator light 1HY1 of the remote button box 1, and the front end of the fault indicator light 1HY1 of the remote button box 2; the rear end of the coil of the relay 1K1, the fault indicator light 1HY1, the fault indicator light 1HY1 of the remote button box 1, and the fault indicator light 1HY1 of the remote button box 2 are connected in parallel and then connected to the neutral wire L62. In the extended branch of the stop signal for the No. 1 fan, the front end of the external stop command contact is connected to the live wire L61 and the rear end is connected to the front end of the coil of relay 1K3. The rear end of the coil of relay 1K3 is connected to the neutral wire L62. In the control branch and operation indication branch of the No. 2 fan, the front ends of the normally open contacts of relays KA31, KA21, KA22, KA11, and 2KH1 are connected in parallel and then connected to the live wire L61; the rear ends of KA31, KA21, and KA22 are connected in parallel and then connected in sequence to the normally closed contacts of relays 2K1, 2KB11, and 2K3, the closing position auxiliary contact of circuit breaker 2QF, and the coil of contactor 2QC; the rear ends of the normally open contacts of relays KA11, 2KH1, and 2K1, and the front ends of the normally open contacts of relay 2KB11 are connected in parallel; the coil of contactor 2QC, the coil of relay 2K2, the operation indicator light 2HG1, the operation indicator light 2HG1 of remote button box 1, and the front ends of the operation indicator light 2HG1 of remote button box 2 are connected in parallel, and the rear ends are connected in parallel and then connected to the neutral wire L62; In the electrical fault monitoring branch of the No. 2 wind turbine, the auxiliary contact of the open position of the circuit breaker 2QF and the front end of the normally open contact of the thermal relay 2KTH are connected in parallel and then connected to the live wire L61; the rear end of the auxiliary contact of the open position of the circuit breaker 2QF and the normally open contact of the thermal relay 2KTH are connected in parallel with the coil of the relay 2K1, the fault indicator 2HY1, the fault indicator 2HY1 of the remote button box 1, and the front end of the fault indicator 2HY1 of the remote button box 2; the rear end of the coil of the relay 2K1, the fault indicator 2HY1, the fault indicator 2HY1 of the remote button box 1, and the fault indicator 2HY1 of the remote button box 2 are connected in parallel and then connected to the neutral wire L62. In the extended branch of the stop signal for the No. 2 fan, the front end of the external stop command contact is connected to the live wire L61 and the rear end is connected to the front end of the coil of relay 2K3. The rear end of the coil of relay 2K3 is connected to the neutral wire L62. The wind turbine control module is connected to the parallel control power monitoring branch. The front end of the parallel connection is connected to the live wire L via circuit breaker QF61, and the rear end of the parallel connection is connected to the neutral wire N via circuit breaker QF61. The control power monitoring branch includes the power monitoring relay K0 and indicator light HW0 of the device body connected in parallel.
3. The ventilation fan control device according to claim 1, characterized in that... In the priority 1 control condition input loop: ① In the start / stop branch of the holding-type single-signal dual-control circuit, the front ends of the external start / stop command contacts and the normally open contacts of relays KC11 and KC12 are connected in parallel and then connected to the live wire L61; the rear ends of the external start / stop command contacts and the normally open contacts of relays KC11 and KC12 are connected in parallel with the front end of the coil of relay KA11; the rear end of the coil of relay KA11 is connected to the neutral wire L62. ② In the instantaneous or holding type single-signal single-control starting branch, the front ends of the external start command contact, the normally open contacts of relays KC13 and KC11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC11 is connected to the front end of the reset button SB11; the rear ends of the external start command contact, the normally open contact of relay KC13, and the reset button SB11 are connected in parallel with the coil of relay KC11 and the front end of indicator light HY11; the coil of relay KC11 and the rear end of indicator light HY11 are connected in parallel and then connected to the neutral wire L62; ③ In the instantaneous or holding type single-signal single-control stop branch, the front ends of the external stop command contact, the normally open contacts of relays KD11 and KB11 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KB11 is connected to the front end of the reset button SB12; the rear ends of the external stop command contact, the normally open contact of relay KD11, and the reset button SB12 are connected in parallel with the front end of the coil of relay KB11; the rear end of the coil of relay KB11 is connected to the neutral wire L62. ④ In the start / stop signal extension branch, the external start / stop command contact is connected to the live wire L61; the rear end of the external start / stop command contact is connected in parallel with the coil of relay KC12 and the front end of indicator light HY12; the coil of relay KC12 and the rear end of indicator light HY12 are connected in parallel and then connected to the neutral wire L62. ⑤ In the start signal extension branch, the external start command contact is connected to the live wire L61; the rear end of the external start command contact is connected in parallel with the coil of relay KC13 and the front end of indicator light HY13; the coil of relay KC13 and the rear end of indicator light HY13 are connected in parallel and then connected to the neutral wire L62. ⑥ In the stop signal extension branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD11 coil; the rear end of the relay KD11 coil is connected to the neutral wire L62. ⑦ The fire manual control extension circuit's holding-type single-signal single-control start No. 1 fan branch includes a fire manual control panel and relay 1KH1 coil connected in sequence; ⑧ The fire manual control extension circuit's holding-type single-signal single-control start No. 2 fan branch includes a fire manual control panel and relay 2KH1 coil connected in sequence.
4. The ventilation fan control device according to claim 1, characterized in that... In the priority 2 control condition input loop: ① In the instantaneous dual-signal dual-control start branch, the external start command contact and the front end of the normally open contact of relay KA21 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KA21 is connected to the front end of the normally closed contact of relay KB21; the external start command contact and the rear end of the normally closed contact of relay KB21 are connected in parallel with the front end of the coil of relay KA21; the rear end of the coil of relay KA21 is connected to the neutral wire L62. ② In the instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KB21 coil; the rear end of the relay KB21 coil is connected to the neutral wire L62. ③ In the instantaneous or holding type single-signal single-control start branch, the external start command contact and the front end of the normally open contact of relay KA22 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KA21 is connected to the front end of reset button SB21; the rear end of the external start command contact and reset button SB21 are connected in parallel with the front end of relay KA22 coil; the rear end of relay KA22 coil is connected to the neutral wire L62.
5. The ventilation fan control device according to claim 1, characterized in that... In the priority 3 control condition input loop: ① In the local manual start / stop branch, the front end of the "local" contact of the local / remote switch SA1 is connected to the live wire L61; the rear end of the "local" contact of the local / remote switch SA1 is connected in parallel with the front end of the normally open contact of the local start button SBC1 and the relay KA31; the rear ends of the normally open contacts of the local start button SBC1 and the relay KA31 are connected in parallel and then sequentially connected to the local stop button SBO1 and the coil of the relay KA31; the rear end of the relay KA31 coil is connected to the neutral wire L62. ② In the remote holding type start / stop branch, the front end of the "remote" contact of the local / remote switch SA1 is connected to the live wire L61; the rear end of the "remote" contact of the local / remote switch SA1 is connected in parallel with the front ends of the normally open contacts of three external start / stop command contacts from different sources and relays KC32 and KC33; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally open contact of relay KC31; the rear ends of the three external start / stop command contacts from different sources and relay KC33 are connected in parallel with the front end of the normally closed contact of relay KC31; the rear ends of one pair of normally open and normally closed contacts of relay KC31 are connected in parallel, and then connected in parallel with the rear end of the local stop button SBO1 and the front end of the coil of relay KA31; ③ In the remote operation indication branch, the front end of the remote button box 1 operation indicator light HB1 and the remote button box 2 operation indicator light HB1 are connected in parallel with the rear end of the "remote" contact of the local / remote switch SA1 and the front end of one pair of normally open and normally closed contacts of the relay KC31; the rear end of the remote button box 1 operation indicator light HB1 and the remote button box 2 operation indicator light HB1 are connected in parallel to the neutral line L62. ④ In the LCU remote control switching branch, the external remote control command contact and the front end of the normally open contact of relay KC31 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC31 is connected to the front end of the normally closed contact of relay KD31; the external remote control command contact and the rear end of the normally closed contact of relay KD31 are connected in parallel with the front end of the coil of relay KC31; the rear end of the coil of relay KC31 is connected to the neutral wire L62. ⑤ In the local control switching branch, the external local control command contact is connected to the live wire L61; the rear end of the external local control command contact is connected to the front end of the relay KD31 coil; the rear end of the relay KD31 coil is connected to the neutral wire L62. ⑥ In the LCU remote control-instantaneous dual-signal dual-control start branch, the external start command contact and the front end of the normally open contact of relay KC32 are connected in parallel and then connected to the live wire L61; the rear end of the normally open contact of relay KC32 is connected to the front end of the normally closed contact of relay KD32; the external start command contact and the rear end of the normally closed contact of relay KD32 are connected in parallel with the front end of the coil of relay KC32; the rear end of the coil of relay KC32 is connected to the neutral wire L62. ⑦ In the LCU remote control-instantaneous dual-signal dual-control stop branch, the external stop command contact is connected to the live wire L61; the rear end of the external stop command contact is connected to the front end of the relay KD32 coil; the rear end of the relay KD32 coil is connected to the neutral wire L62. ⑧ In the remote manual control - instantaneous holding type start / stop branch, the front ends of the normally open contacts of the remote button box 1 start button SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel and then connected to the live wire L61; the rear ends of the remote button box 1 start button SBC1, remote button box 2 start button SBC1, and relay KC33 are connected in parallel and then connected to the remote button box 1 stop button SBO1, remote button box 2 stop button SBO1, and relay KC33 coil; the rear end of the relay KC33 coil is connected to the neutral wire L62.
6. The ventilation fan control device according to claim 1, characterized in that... In the fan operation lead-out contact: ①The No. 1 fan's operating lead-out contacts include two pairs of normally open contacts of relay 1K2; ②The No. 2 fan's operating lead-out contacts include two pairs of normally open contacts of relay 2K2.
7. The ventilation fan control device according to claim 1, characterized in that... In the linkage control lead-out contact: ①The lead-out contact of the No. 1 fan operation linkage control is one pair of normally open contacts of relay 1K2; ②The stop linkage control lead-out contact of fan #1 is one pair of normally closed contacts of relay 1K2; ③The lead-out contact of the No. 2 fan operation linkage control is one pair of normally open contacts of relay 2K2; ④ The stop linkage control lead-out contact of fan #2 is a pair of normally closed contacts of relay 2K2.
8. The ventilation fan control device according to claim 1, characterized in that... In the signal loop: ①The control power supply fault signal branch includes the circuit breaker QF61 trip position contact and the power monitoring relay K0 normally closed contact connected in parallel; ② The local location signal branch includes the "local" contact of the local / remote switching switch SA1; ③ The remote location signal branch includes the "remote" contact of the local / remote switching switch SA1; ④ The fault signal branch of fan #1 includes the normally open contact of relay 1K1; ⑤ The operating signal branch of fan #1 includes the normally open contact of contactor 1QC; ⑥ The stop signal branch for fan #1 includes the normally open contact of relay 1K3; ⑦ The fault signal branch of fan #2 includes the normally open contact of relay 2K1; ⑧2# Fan operation signal branch includes the normally open contact of contactor 2QC; ⑨ The stop signal branch for fan #2 includes the normally open contact of relay 2K3; ⑩ The start / stop signal branch includes the normally open contact of relay KC12; The 11-start signal branch includes the normally open contact of relay KC13; The 12 stop signal branch includes the normally open contact of relay KD11.
9. The ventilation fan control device according to claim 1, characterized in that... It also includes a metal housing, with various relays encapsulated inside the metal housing, and various functional pressure plates, indicator lights, buttons, etc. embedded in the metal housing.