An ultra-fine dry powder canister actuation control device, system, and method

Abstract

The application discloses a kind of ultrafine dry powder tank body starting control device, system and method, the system includes fire extinguishing host computer and multiple starting control devices, multiple starting control devices are sequentially connected in series, the voltage output terminal of each starting control device is connected with a group of ultrafine dry powder tank body, each ultrafine dry powder tank body of each group of ultrafine dry powder tank body is connected in parallel, when needing to detonate ultrafine dry powder tank body fire extinguishing, fire extinguishing host computer controls input and output module and outputs starting instruction to the control signal input terminal of first starting control device, the voltage output terminal of previous starting control device between adjacent two starting control devices is connected with the voltage input terminal of latter starting control device.The application reduces the size of starting current by controlling the time-sharing starting of each group of ultrafine dry powder tank body, reduces cable core diameter, makes on-site construction more simple and convenient, and can use gas fire extinguishing controller with power instead of fire-fighting special power.

Description

Technical Field

[0001] This invention belongs to the field of fire protection equipment control technology, specifically relating to an ultrafine dry powder tank start-up control device, system and method. Background Technology

[0002] In the narrow environment of underground utility tunnels, each section is approximately 200m long and 3m wide. According to design requirements, an ultra-fine dry powder canister needs to be installed approximately every 4m, requiring a total of 50 canisters. Each canister requires an initiation device, which needs 1A of current to start, for a total system current of 50A. The original design connected all the initiation devices of the ultra-fine dry powder canisters in parallel to the starting line, requiring NH-RVV2*10mm² starting wire for the 50A current. The gas extinguishing unit itself has a built-in 10A power supply, which is insufficient to meet the starting current requirements of the ultra-fine dry powder. Therefore, a dedicated fire-fighting power supply of 50A or greater is needed, and the system also requires an NH-KVV2*2.5mm² feedback wire.

[0003] When the gas extinguishing control panel receives a fire alarm linkage signal, traditional solutions such as Figure 1 As shown: The gas extinguishing host control input / output module outputs a 24V active signal, which causes the normally open contact of the intermediate relay to close. The current from the fire-fighting power supply reaches the ignition device of the ultrafine dry powder tank through the intermediate relay. The ignition device controls the ultrafine dry powder tank to release the ultrafine dry powder stored inside for fire extinguishing.

[0004] This traditional design has a large starting current and thick cables, and requires a dedicated fire protection power supply. Because the starting line and feedback line are laid in the same DN40 galvanized pipe, and corresponding metal flexible hoses and locking heads are required, the difficulty of wiring and piping is also increased. Summary of the Invention

[0005] The purpose of this invention is to overcome at least one of the defects in the prior art and to provide an ultrafine dry powder tank start-up control device, system and method, which at least solves one of the problems of large start-up current, thick start-up wire and the need to configure a fire-fighting power supply for ultrafine dry powder tanks in narrow spaces such as underground integrated pipe corridors.

[0006] The technical solution of this invention is implemented as follows: This invention discloses an ultrafine dry powder canister start-up control device, including a control unit, a voltage conversion module, a switch control circuit, a voltage input terminal for receiving a first voltage, and a control signal input terminal for receiving a start-up command. The input terminal of the voltage conversion module is connected to the voltage input terminal, and the output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminal, and the output terminal of the switch control circuit is connected to the voltage output terminal. The first input terminal of the control unit is connected to the control signal input terminal, and the first output terminal of the control unit is connected to the control terminal of the switch control circuit for controlling the on / off state of the switch control circuit. The first voltage is the voltage required to detonate the ultrafine dry powder canister.

[0007] This invention discloses an ultrafine dry powder canister activation control device, comprising a control unit, a power supply unit, and a switch control circuit. The input terminal of the voltage conversion module is connected to a voltage input terminal, and the output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminal, and the output terminal of the switch control circuit is connected to a voltage output terminal. The first output terminal of the control unit is connected to the control terminal of the switch control circuit. The control unit is used to control the on / off state of the switch control circuit according to the set detonation time of the ultrafine dry powder canister. The first voltage is the voltage for detonating the ultrafine dry powder canister.

[0008] Furthermore, the ultrafine dry powder canister start-up control device of the present invention also includes an instruction input unit. The first input terminal of the control unit is connected to the instruction input unit, and the control unit is used to collect the detonation time of the ultrafine dry powder canister set by the instruction input unit.

[0009] Furthermore, the ultrafine dry powder tank start-up control device of the present invention also includes an isolation module, the input terminal of which is connected to a voltage input terminal, and the output terminal of which is connected to the input terminals of a voltage conversion module and a switch control circuit, respectively.

[0010] The ultrafine dry powder tank start-up control device of the present invention further includes an isolation module. The input terminal of the isolation module is connected to the voltage input terminal, and the output terminal of the isolation module is connected to the input terminal of the voltage conversion module and the switch control circuit, respectively.

[0011] Furthermore, the ultrafine dry powder tank start-up control device of the present invention also includes a feedback signal output terminal for outputting feedback signals and a feedback signal input terminal for receiving feedback signals. The feedback signal output terminal is connected to the second output terminal of the control unit, and the feedback signal input terminal is connected to the second input terminal of the control unit.

[0012] This invention discloses an ultrafine dry powder canister start-up control system, including a fire extinguishing host and multiple start-up control devices. The multiple start-up control devices are connected in series. The voltage output terminal of each start-up control device is connected to a set of ultrafine dry powder canisters. The ultrafine dry powder canisters in each set are connected in parallel. The first start-up control device adopts the ultrafine dry powder canister start-up control device as described above, and the remaining start-up control devices adopt the ultrafine dry powder canister start-up control device as described above. The control signal input terminal of the first start-up control device is connected to the fire extinguishing host to receive the start-up command sent by the fire extinguishing host. Between two adjacent start-up control devices, the voltage output terminal of the previous start-up control device is connected to the voltage input terminal of the next start-up control device.

[0013] When the voltage output terminal of each start-up control device outputs the first voltage, the ultrafine dry powder tank connected to its voltage output terminal is energized.

[0014] Furthermore, the fire extinguishing host is connected to the first start control device via an input / output module; the power supply of the fire extinguishing host is used to provide the first voltage to the voltage input terminal of the first start control device.

[0015] Furthermore, the number of ultra-fine dry powder canisters in each group must be such that the power supply of the fire extinguishing host can meet the starting current required for that group of ultra-fine dry powder canisters.

[0016] Furthermore, each start-up control device includes a feedback signal output terminal for outputting feedback signals and a feedback signal input terminal for receiving feedback signals. The feedback signal output terminal is connected to the second output terminal of the control unit, and the feedback signal input terminal is connected to the second input terminal of the control unit. Between two adjacent start-up control devices, the feedback signal output terminal of the latter start-up control device is connected to the feedback signal input terminal of the former start-up control device. The feedback signal output terminal of the first start-up control device is connected to the fire extinguishing host or to the fire extinguishing host via an input / output module. The feedback signal input terminal of each start-up control device is connected to the corresponding ultrafine dry powder canister of the group, for collecting feedback signals from each ultrafine dry powder canister of the group and sending them to its control unit.

[0017] This invention discloses a method for controlling the start-up of an ultrafine dry powder tank, comprising the following steps:

[0018] Power is supplied to the voltage input terminal of the first activation control device. When it is necessary to detonate the ultrafine dry powder canisters for fire extinguishing, the fire extinguishing host control input / output module outputs a activation command to the control signal input terminal of the first activation control device. After receiving the activation command, the control unit inside the first activation control device sends a signal to the switch control circuit. The switch control circuit closes and outputs the first voltage. At this time, the first group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the second activation control device receives the first voltage. After the second activation control device receives the first voltage, its control unit is powered on and runs, and detects the delay time t of the command input unit. When the delay time t is reached, its control unit sends a signal to the switch control circuit, controlling the switch control circuit to close and output the first voltage. At this time, the second group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the third activation control device receives the first voltage, and so on, until the last group of ultrafine dry powder canisters receives the first voltage and begins to detonate.

[0019] Furthermore, after the last set of ultrafine dry powder canisters is detonated, signals are fed back step by step from the last start control device to the first start control device. The first start control device feeds back the feedback signal to the fire extinguishing host via the input / output module. Once the fire extinguishing host receives the feedback signal, the process is completed.

[0020] The present invention has at least the following beneficial effects: The present invention sets up multiple start-up control devices, which are connected in series. The ultrafine dry powder tanks are divided into groups of several, and the multiple groups of ultrafine dry powder tanks are respectively connected to the voltage output terminals of the multiple start-up control devices. The ultrafine dry powder tanks in each group are connected in parallel. By controlling the start-up of each group of ultrafine dry powder tanks in a time-sharing manner, the starting current is reduced, the cable core diameter is reduced, and the on-site construction is simpler and more convenient. Moreover, the power supply of the gas extinguishing controller can be used instead of the fire-fighting power supply, which solves the problems of large starting current, thick starting wires, and the need to configure a fire-fighting power supply for ultrafine dry powder tanks in narrow spaces such as underground integrated pipe corridors. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a traditional ultrafine dry powder tank start-up control system;

[0023] Figure 2A schematic diagram of the ultrafine dry powder tank start-up control system provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of an ultrafine dry powder tank start-up control device provided in one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of an ultrafine dry powder tank start-up control device provided in another embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" or "several" means two or more.

[0028] Example 1

[0029] See Figure 3 This invention provides a start-up control device for an ultrafine dry powder canister, including a control unit, a voltage conversion module, a switch control circuit, a voltage input terminal for receiving a first voltage, and a control signal input terminal for receiving a start command. The input terminal of the voltage conversion module is connected to the voltage input terminals V+ and V- (the voltage input terminals V+ and V- need to provide 24V DC voltage and 10A current). The output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminals V+ and V-, and the output terminal of the switch control circuit is connected to the voltage output terminals 2S+ and 2S- (rated voltage output 24V). The first input terminal of the control unit is connected to the control signal input terminals A+ and A- (the signal type is a passive normally closed signal). The first output terminal of the control unit is connected to the control terminal of the switch control circuit to control the on / off state of the switch control circuit. When the control unit receives a start command, it controls the switch control circuit to conduct, that is, it controls the conduction between the voltage input terminal and the voltage output terminal, and the voltage output terminal outputs the first voltage, i.e., 24V power supply, which is the voltage for detonating the ultrafine dry powder canister.

[0030] Furthermore, the ultrafine dry powder can start-up control device of the present invention also includes an isolation module. The input terminal of the isolation module is connected to the voltage input terminal, and the output terminal of the isolation module is connected to the input terminals of the voltage conversion module and the switch control circuit, respectively. The isolation module is used to limit the maximum input voltage to 24V to prevent subsequent circuits from being damaged by overvoltage.

[0031] Furthermore, the ultrafine dry powder tank start-up control device of the present invention also includes feedback signal output terminals 1FB+ and 1FB- (signal type is passive normally closed signal) for outputting feedback signals and feedback signal input terminals 2FB+ and 2FB- (signal type is passive normally closed signal) for receiving feedback signals. The feedback signal output terminals are connected to the second output terminal of the control unit, and the feedback signal input terminals are connected to the second input terminal of the control unit.

[0032] The control unit in this embodiment uses a microcontroller. The voltage conversion module converts the 24V voltage to the power supply voltage required by the microcontroller. In this embodiment, the voltage conversion module filters and steps down the 24V voltage to stabilize it at 5V, which is then used to power the control unit. The switch control circuit can use a relay. When the switch control circuit receives a control signal from the control unit, the relay closes, and the 24V voltage is output. The control unit controls the energization or de-energization of the relay coil, thereby controlling the conduction and disconnection between the voltage input terminal and the voltage output terminal. For example, one end of the normally open contact of the relay is connected to the voltage input terminal or the output terminal of the isolation module, and the other end of the normally open contact of the relay is connected to the voltage output terminal. The first output terminal of the control unit is connected to one end of the relay coil, and the other end of the relay coil is connected to a power source, such as 24V.

[0033] Furthermore, the ultrafine dry powder tank start-up control device of this embodiment of the invention also includes three indicator lights, which are connected to the control unit and whose power is controlled by the control unit. The first indicator light is an action signal light, the second indicator light is a feedback signal light, and the third indicator light is a fault signal light.

[0034] Example 2

[0035] See Figure 4This invention discloses an ultrafine dry powder canister activation control device, including a control unit, a power supply unit, and a switch control circuit. The input terminal of the voltage conversion module is connected to voltage input terminals 1S+ and 1S- (rated voltage input 24V), and the output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminals, and the output terminal of the switch control circuit is connected to voltage output terminals 2S+ and 2S- (rated voltage output 24V). The first output terminal of the control unit is connected to the control terminal of the switch control circuit. The control unit is used to control the on / off state of the switch control circuit according to the set detonation time of the ultrafine dry powder canister. The first voltage is the voltage for detonating the ultrafine dry powder canister.

[0036] Furthermore, the ultrafine dry powder canister start-up control device of the present invention also includes an instruction input unit. The first input terminal of the control unit is connected to the instruction input unit, and the control unit is used to collect the detonation time of the ultrafine dry powder canister set by the instruction input unit.

[0037] Furthermore, in this embodiment, the instruction input unit is a DIP switch. This DIP switch can adjust the time of group start control; each DIP switch can delay by 0.5 seconds, and the detonation time is adjustable from 1 to 4 seconds.

[0038] Furthermore, the ultrafine dry powder can start-up control device of the present invention also includes an isolation module. The input terminal of the isolation module is connected to the voltage input terminal, and the output terminal of the isolation module is connected to the input terminals of the voltage conversion module and the switch control circuit, respectively. The isolation module is used to limit the maximum input voltage to 24V to prevent subsequent circuits from being damaged by overvoltage.

[0039] When the voltage input terminal is energized, the voltage input from the voltage input terminal is 24V. The voltage conversion module is used to convert the 24V voltage into the power supply voltage required by the control unit. In this embodiment, the voltage conversion module filters and steps down the 24V voltage to stabilize it at 5V, which is then used to power the control unit. After the control unit is powered on and running, it detects the delay time t set by the command input unit, such as the DIP switch. When the delay time t is reached, the control unit sends a signal to the switch control circuit to close the switch control circuit, that is, to connect the voltage input terminal or the output terminal of the isolation module with the voltage output terminal, and the voltage output terminal outputs a first voltage, such as 24V power.

[0040] The control unit in this embodiment uses a microcontroller. The switch control circuit can use a relay. The control unit controls the energization or de-energization of the relay coil, thereby controlling the conduction and disconnection between the voltage input terminal or the output terminal of the isolation module and the voltage output terminal. For example, one end of the normally open contact of the relay is connected to the voltage input terminal or the output terminal of the isolation module, and the other end of the normally open contact of the relay is connected to the voltage output terminal. The first output terminal of the control unit is connected to one end of the relay coil, and the other end of the relay coil is connected to a power supply, such as 24V.

[0041] The microcontroller acquires the input signal from the DIP switch, determines the detonation time t of the ultrafine dry powder canister, and stores it in the control unit. After the delay t, the microcontroller outputs a control signal to the switch control circuit, which closes the internal switch, allowing 24V voltage to supply power to the next stage through the voltage output terminals 2S+ and 2S-.

[0042] Furthermore, the ultrafine dry powder tank start-up control device of the present invention also includes feedback signal output terminals 1FB+ and 1FB- (signal type is passive normally closed signal) for outputting feedback signals and feedback signal input terminals 2FB+ and 2FB- (signal type is passive normally closed signal) for receiving feedback signals. The feedback signal output terminals are connected to the second output terminal of the control unit, and the feedback signal input terminals are connected to the second input terminal of the control unit.

[0043] Furthermore, the ultrafine dry powder tank start-up control device of this embodiment of the invention also includes three indicator lights, which are connected to the control unit and whose power is controlled by the control unit. The first indicator light is an action signal light, the second indicator light is a feedback signal light, and the third indicator light is a fault signal light.

[0044] Example 3

[0045] See Figures 2 to 4 This invention discloses an ultrafine dry powder canister start-up control system, including a fire extinguishing host and multiple start-up control devices. The multiple start-up control devices are connected in series. The voltage output terminal of each start-up control device is connected to a set of ultrafine dry powder canisters. The ultrafine dry powder canisters in each set are connected in parallel. The first start-up control device is an ultrafine dry powder canister start-up control device as described in Embodiment 1, and the remaining start-up control devices are ultrafine dry powder canister start-up control devices as described in Embodiment 2. The control signal input terminal of the first start-up control device is connected to the fire extinguishing host to receive the start-up command sent by the fire extinguishing host. The voltage output terminal of the preceding start-up control device is connected to the voltage input terminal of the following start-up control device between two adjacent start-up control devices.

[0046] When the voltage output terminal of each start-up control device outputs the first voltage, the ultrafine dry powder tank connected to its voltage output terminal is energized.

[0047] The ultrafine dry powder tank start-up control device described in Embodiment 1 is used to interface with the input / output module, while the ultrafine dry powder tank start-up control device described in Embodiment 2 is used at the connection between groups.

[0048] Furthermore, the fire extinguishing unit is connected to the first start-up control device via an input / output module; the control signal input terminal of the first start-up control device is connected to the input / output module to receive the start-up command sent by the input / output module. The fire extinguishing unit's built-in power supply provides the first voltage to the voltage input terminal of the first start-up control device. The input / output module converts the signals output by the fire extinguishing unit into switch signal outputs.

[0049] The control signal input terminals A+ and A- of the first start control device are connected to the corresponding terminals of the input / output module, respectively. The feedback signal output terminals FB+ and FB- of the first start control device are connected to the corresponding terminals of the input / output module, respectively. The voltage input terminals V+ and V- of the first start control device are connected to the corresponding terminals of the fire extinguishing host. The gas fire extinguishing host provides 24V power to the V+ and V- terminals. The voltage output terminals 2S+ and 2S- of the first start control device are connected to the voltage input terminals 1S+ and 1S- of the second start control device, respectively. The feedback signal input terminals 2FB+ and 2FB- of the first start control device are connected to the feedback signal output terminals 1FB+ and 1FB- of the second start control device, respectively.

[0050] The voltage output terminals 2S+ and 2S- of the second start control device are connected to the voltage input terminals 1S+ and 1S- of the third start control device, and the feedback signal input terminals 2FB+ and 2FB- of the second start control device are connected to the feedback signal output terminals 1FB+ and 1FB- of the third start control device, and so on, so that multiple start control devices are connected in series.

[0051] Furthermore, the number of ultra-fine dry powder canisters in each group must be such that the power supply of the fire extinguishing host can meet the starting current required for that group of ultra-fine dry powder canisters.

[0052] Furthermore, each start-up control device includes a feedback signal output terminal for outputting feedback signals and a feedback signal input terminal for receiving feedback signals. The feedback signal output terminal is connected to the second output terminal of the control unit, and the feedback signal input terminal is connected to the second input terminal of the control unit. Between two adjacent start-up control devices, the feedback signal output terminal of the latter start-up control device is connected to the feedback signal input terminal of the former start-up control device. The feedback signal output terminal of the first start-up control device is connected to the input / output module, and the input / output module is connected to the fire extinguishing host. Starting from the last start-up control device, the feedback signal is fed back step by step to the first start-up control device. The first start-up control device feeds back the feedback signal to the host through the input / output module via the 1FB+ and 1FB- terminals. When the host receives the feedback signal, the process is completed.

[0053] The feedback signal input terminal of each start-up control device is connected to the corresponding ultrafine dry powder canister in the group, and is used to collect the feedback signal of each ultrafine dry powder canister in the group and send it to its control unit.

[0054] Each ultrafine dry powder canister in this group has its first feedback signal terminal connected to the first feedback signal input terminal 2FB+ of the corresponding start-up control device, and each ultrafine dry powder canister's second feedback signal terminal is connected to the second feedback signal input terminal 2FB- of the corresponding start-up control device, forming a parallel connection. In one embodiment, when an ultrafine dry powder canister is detonated, an open circuit is formed between its first and second feedback signal terminals. The control unit can determine whether all ultrafine dry powder canisters in the group have been detonated based on the resistance measured between the first and second feedback signal input terminals 2FB+ and 2FB- of the start-up control device.

[0055] Example 4

[0056] See Figures 2 to 4 This invention discloses a method for controlling the start-up of an ultrafine dry powder tank, comprising the following steps:

[0057] Power is supplied to the voltage input terminal of the first activation control device. When it is necessary to detonate the ultrafine dry powder canisters for fire extinguishing (e.g., when the fire extinguishing host receives a fire alarm linkage signal), the fire extinguishing host control input / output module outputs a activation command to the control signal input terminal of the first activation control device. After receiving the activation command, the control unit inside the first activation control device sends a signal to the switch control circuit. The switch control circuit closes and outputs the first voltage. At this time, the first group of ultrafine dry powder canisters receives the first voltage and begins to detonate. Simultaneously, the second activation control device receives the first voltage. After the second activation control device receives the first voltage, its control unit is powered on and runs, and detects the delay time t of the command input unit. When the delay time t is reached, its control unit sends a signal to the switch control circuit, controlling the switch control circuit to close and output the first voltage. At this time, the second group of ultrafine dry powder canisters receives the first voltage and begins to detonate. Simultaneously, the third activation control device receives the first voltage, and so on, until the last group of ultrafine dry powder canisters receives the first voltage and begins to detonate.

[0058] Furthermore, after the last set of ultrafine dry powder canisters is detonated, signals are fed back step by step from the last start control device to the first start control device. The first start control device feeds back the feedback signal to the fire extinguishing host via the input / output module. Once the fire extinguishing host receives the feedback signal, the process is completed.

[0059] The feedback signal indicates whether each group of detonations was successfully executed. When the next activation control device transmits the feedback signal (such as the feedback signal indicating whether all 49th and 50th ultrafine dry powder canisters were detonated) to the previous activation control device, the previous activation control device receives the first feedback signal from the next activation control device (such as the feedback signal indicating whether all 49th and 50th ultrafine dry powder canisters were detonated) and combines it with its own collected second feedback signal (such as the feedback signal indicating whether all 41st to 48th ultrafine dry powder canisters were detonated), analyzes it, and outputs a third feedback signal (such as the feedback signal indicating whether all 41st to 50th ultrafine dry powder canisters were detonated). Finally, the first activation control device feeds back the feedback signals indicating whether all ultrafine dry powder canisters were detonated to the fire extinguishing host through the input / output module. The input / output module only needs to receive a single switch feedback signal from the first activation control device.

[0060] When the total number of ultrafine dry powder canisters is 50, they are divided into groups of 8. In this embodiment, the last group has 2 ultrafine dry powder canisters, and the remaining groups have 8. Under the action of the internal control unit of the starting device, the initiator of each group of ultrafine dry powder canisters is triggered in a time-sharing manner, causing each group to detonate at intervals of a few seconds. Since each group has only 8 ultrafine dry powder canisters, only 8A of current is needed. The original 10A current of the gas extinguishing host is sufficient for the system function, so the dedicated fire-fighting power supply is eliminated. Because its current is only 8A, the original starting cable NH-RVV2*10mm2+NH-KVV2*2.5mm2 can be replaced with NH-KVV4*2.5mm2. With the reduction in cable diameter, the galvanized pipe used for conduit is also reduced accordingly, and DN25 galvanized pipe is sufficient, making wiring and construction simpler.

[0061] The working process of a specific embodiment of the present invention is as follows:

[0062] The gas extinguishing unit supplies 24V power to the V+ and V- terminals. When it is necessary to ignite the ultrafine dry powder canisters for fire extinguishing, the gas extinguishing unit's control input / output module outputs a closed switch signal to the A+ and A- terminals of the first activation control device. After receiving the closed signal, the first activation control device's control unit checks for a closed switch signal input again after a 3-second interval. Once a closed switch signal input is confirmed, the control unit inside the first activation control device sends a signal to the switch control circuit. The relay inside the switch control circuit closes, and 24V power is output. At the same time, the green indicator light illuminates, indicating that the board is in operation. At this time, the first group of ultrafine dry powder canisters (the 1st to the 8th) receive 24V power and begin detonation, while the second activation control device also receives 24V voltage.

[0063] When the second start control device receives 24V voltage, the control unit inside the second start control device detects the delay time t of the DIP switch. When the delay time t is reached, the control unit inside the second start control device sends a signal to the switch control circuit. The relay inside the switch control circuit closes, the 24V power supply is output, and the green indicator light illuminates, indicating that the start control device is in operation. At this time, the second group of ultrafine dry powder tanks (the 9th to the 16th) receive 24V power and begin to detonate. At the same time, the third start control device receives 24V voltage.

[0064] The subsequent start control device continues to execute according to the second start control device. After the last start control device completes its execution, the feedback signal is fed back from the last start control device to the first start control device step by step. The first start control device feeds back the feedback signal to the input / output module through the 1FB+ and 1FB- terminals, and then the input / output module feeds it back to the gas extinguishing host. When the gas extinguishing host receives the feedback signal, the process is completed.

[0065] To reduce the starting current, reduce the cable core diameter, combine the starting line and feedback line into one cable, and change the original starting line NH-RVV2*10mm2 + feedback line NH-KVV2*2.5mm2 to NH-KVV4*2.5mm2, and to use the power supply built into the gas extinguishing controller instead of the dedicated fire-fighting power supply, this invention designs a starting control device that solves the problems of high starting current, thick starting lines, and the need for a dedicated fire-fighting power supply in the narrow space of underground integrated pipe corridors containing ultra-fine dry powder tanks.

[0066] This invention reduces the starting current and cable core diameter by controlling the time-sharing start-up of the ultrafine dry powder tank, making on-site construction simpler and more convenient.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling the start-up of an ultrafine dry powder container, characterized in that, Includes the following steps: Power is supplied to the voltage input terminal of the first activation control device. When it is necessary to detonate the ultrafine dry powder canisters for fire extinguishing, the fire extinguishing host control input / output module outputs a activation command to the control signal input terminal of the first activation control device. After receiving the activation command, the control unit inside the first activation control device sends a signal to the switch control circuit. The switch control circuit closes and outputs the first voltage. At this time, the first group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the second activation control device receives the first voltage. After the second activation control device receives the first voltage, its control unit is powered on and runs, and detects the delay time t of the command input unit. When the delay time t is reached, its control unit sends a signal to the switch control circuit, controls the switch control circuit to close, and outputs the first voltage. At this time, the second group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the third activation control device receives the first voltage, and so on, until the last group of ultrafine dry powder canisters receives the first voltage and begins to detonate. After the last set of ultrafine dry powder canisters is detonated, signals are fed back step by step from the last start control device to the first start control device. The first start control device feeds back the feedback signal to the fire extinguishing host via the input / output module. Once the fire extinguishing host receives the feedback signal, the ultrafine dry powder canister start control method is completed.

2. A start-up control system for an ultrafine dry powder tank, characterized in that: It includes a fire extinguishing host and multiple start control devices, which are connected in series. Each start control device's voltage output terminal is connected to a set of ultra-fine dry powder canisters. The ultra-fine dry powder canisters in each set are connected in parallel. The control signal input terminal of the first start control device is connected to the fire extinguishing host to receive the start command sent by the fire extinguishing host. Between two adjacent start control devices, the voltage output terminal of the previous start control device is connected to the voltage input terminal of the next start control device. Power is supplied to the voltage input terminal of the first activation control device. When it is necessary to detonate the ultrafine dry powder canisters for fire extinguishing, the fire extinguishing host control input / output module outputs a activation command to the control signal input terminal of the first activation control device. After receiving the activation command, the control unit inside the first activation control device sends a signal to the switch control circuit. The switch control circuit closes and outputs the first voltage. At this time, the first group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the second activation control device receives the first voltage. After the second activation control device receives the first voltage, its control unit is powered on and runs, and detects the delay time t of the command input unit. When the delay time t is reached, its control unit sends a signal to the switch control circuit, controls the switch control circuit to close, and outputs the first voltage. At this time, the second group of ultrafine dry powder canisters receives the first voltage and begins to detonate. At the same time, the third activation control device receives the first voltage, and so on, until the last group of ultrafine dry powder canisters receives the first voltage and begins to detonate. After the last set of ultrafine dry powder canisters is detonated, signals are fed back to the first start control device step by step from the last start control device. The first start control device feeds back the feedback signal to the fire extinguishing host through the input / output module. When the fire extinguishing host receives the feedback signal, the ultrafine dry powder canister start control method is completed. The first start-up control device includes a control unit, a voltage conversion module, a switch control circuit, a voltage input terminal for receiving a first voltage, and a control signal input terminal for receiving a start-up command. The input terminal of the voltage conversion module is connected to the voltage input terminal, and the output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminal, and the output terminal of the switch control circuit is connected to the voltage output terminal. The first input terminal of the control unit is connected to the control signal input terminal, and the first output terminal of the control unit is connected to the control terminal of the switch control circuit to control the on / off state of the switch control circuit. The first voltage is the voltage required to detonate the ultrafine dry powder canister. The remaining start-up control devices include a control unit, a power supply unit, and a switch control circuit. The input terminal of the voltage conversion module is connected to the voltage input terminal, and the output terminal of the voltage conversion module is used to output a second voltage to power the control unit. The input terminal of the switch control circuit is connected to the voltage input terminal, and the output terminal of the switch control circuit is connected to the voltage output terminal. The first output terminal of the control unit is connected to the control terminal of the switch control circuit. The control unit is used to control the on / off state of the switch control circuit according to the set detonation time of the ultrafine dry powder canister. The first voltage is the voltage used to detonate the ultrafine dry powder canister.

3. The ultrafine dry powder tank start-up control system as described in claim 2, characterized in that: It also includes an instruction input unit, the first input terminal of the control unit is connected to the instruction input unit, and the control unit is used to collect the detonation time of the ultrafine dry powder canister set by the instruction input unit.

4. The ultrafine dry powder tank start-up control system as described in claim 2, characterized in that: It also includes an isolation module, the input of which is connected to a voltage input terminal, and the output of which is connected to the input of a voltage conversion module and a switch control circuit, respectively.

5. The ultrafine dry powder tank start-up control system as described in claim 2, characterized in that: It also includes a feedback signal output terminal for outputting feedback signals and a feedback signal input terminal for receiving feedback signals. The feedback signal output terminal is connected to the second output terminal of the control unit, and the feedback signal input terminal is connected to the second input terminal of the control unit.

6. The ultrafine dry powder tank start-up control system as described in claim 2, characterized in that: The fire extinguishing host is connected to the first start control device via an input / output module; the power supply of the fire extinguishing host is used to provide the first voltage to the voltage input terminal of the first start control device; the number of ultra-fine dry powder canisters in each group must be such that the power supply of the fire extinguishing host can meet the starting current required for that group of ultra-fine dry powder canisters.

7. The ultrafine dry powder tank start-up control system as described in claim 2, characterized in that: Each start control device includes a feedback signal output terminal for outputting feedback signals and a feedback signal input terminal for receiving feedback signals. The feedback signal output terminal is connected to the second output terminal of the control unit, and the feedback signal input terminal is connected to the second input terminal of the control unit. Between two adjacent start control devices, the feedback signal output terminal of the latter start control device is connected to the feedback signal input terminal of the former start control device. The feedback signal output terminal of the first start control device is connected to the fire extinguishing host or to the fire extinguishing host via an input / output module. The feedback signal input terminal of each start control device is connected to the corresponding ultrafine dry powder canister of the group, for collecting feedback signals from each ultrafine dry powder canister of the group and sending them to its control unit.

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