Module box for controlling fireproof valve and control method of fireproof valve

Abstract

The invention relates to a module box for controlling a fireproof valve and a control method of the fireproof valve. The module box comprises a box body; the output module is arranged in the box body, is in communication connection with an external fire alarm controller, and is used for receiving a remote control instruction of the fire alarm controller and generating a remote control signal; the first switch module is arranged in the box body, is electrically connected with the output module and is used for realizing electric connection between the output module and the fireproof valve under the triggering of the remote control signal, so that the remote control signal controls the fireproof valve to be opened or closed; and the local control button is arranged on the box body and is used for responding to an external local control instruction and triggering an electric connection path with the fireproof valve, so that the local control instruction controls the fireproof valve to be opened or closed. According to the invention, the fault-tolerant capability and the overall safety of the module box are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power, and in particular to a module box for controlling a fire damper and a control method for the fire damper. Background Art

[0002] In a fire accident, casualties caused by smoke are usually much higher than those caused directly by flames, so it is particularly important to control the spread of smoke in a fire. Fire dampers can effectively block the spread of smoke and flames when a fire occurs to prevent the spread of fire and thus reduce casualties. The opening and closing of fire dampers mainly depends on the fire alarm controller to achieve remote control through a module box. However, the existing module boxes are usually a simple combination of modules and boxes, lacking the function of local control, resulting in low fault tolerance. Once a fire occurs, when remote control fails, if it is not possible to intervene in time through on-site operations, it may have immeasurable serious consequences. Therefore, it is necessary to provide a module box for controlling fire dampers and a control method for fire dampers. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a module box for controlling fire dampers and a control method for fire dampers, thereby improving the problem of low fault tolerance of the module box in the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a module box for controlling a fire damper, comprising: a box body; an output module, which is arranged in the box body and is communicatively connected to an external fire alarm controller, and is used to receive remote control instructions from the fire alarm controller and generate remote control signals; a first switch module, which is arranged in the box body and is electrically connected to the output module, and is used to realize the electrical connection between the output module and the fire damper under the triggering of the remote control signal, so that the remote control signal controls the fire damper to open or close; a local control button, which is arranged on the box body, and is used to trigger the electrical connection path with the fire damper in response to an external local control instruction, so that the local control instruction controls the fire damper to open or close.

[0005] In one embodiment of the present invention, the output module includes a valve opening output module, and the first switch module includes a first valve opening switch, wherein: the valve opening output module is communicatively connected to the fire alarm controller, and is used to receive the remote valve opening instruction of the remote control instruction, and perform signal analysis to generate a remote valve opening control signal; the first valve opening switch is used to be turned on when triggered by the remote valve opening control signal, to achieve an electrical connection between the valve opening output module and the fire damper, so that the remote valve opening control signal controls the opening of the fire damper.

[0006] In one embodiment of the present invention, the output module also includes a valve closing output module, and the first switch module also includes a first valve closing switch, wherein: the valve closing output module is communicatively connected to the fire alarm controller, and is used to receive a remote valve closing instruction of the remote control instruction, and perform signal analysis to generate a remote valve closing control signal; the first valve closing switch is used to be turned on when triggered by the remote valve closing control signal, to achieve electrical connection between the valve closing output module and the fire damper, so that the remote valve closing control signal controls the fire damper to close.

[0007] In one embodiment of the present invention, the local control buttons include: a start control button, which is arranged on the box body, and is used to respond to the valve opening instruction of the local control instruction, and to open the electrical connection path with the fire damper, so that the valve opening instruction controls the fire damper to open; a stop control button, which is arranged on the box body, and is used to respond to the valve closing instruction of the local control instruction, and to open the electrical connection path with the fire damper, so that the valve closing instruction controls the fire damper to close.

[0008] In one embodiment of the present invention, the module box also includes a second switch module and an input module, wherein: the second switch module is arranged in the box body and is electrically connected to the limit device, and is used to be turned on under the control of the position feedback signal sent by the limit device to realize the electrical connection between the limit device and the input module; wherein, when the limit device detects that the fire damper reaches a preset position, it generates a position feedback signal; the input module is arranged in the box body and is communicatively connected to the fire alarm controller, and is used to receive the position feedback signal and send the position feedback signal to the fire alarm controller.

[0009] In one embodiment of the present invention, the second switch module includes a second valve opening switch, and the input module includes a valve opening input module, wherein: the second valve opening switch is electrically connected to the limit device, and the second normally open contact of the second valve opening switch is connected to the valve opening input module, and is used to respond to the open limit feedback signal sent by the limit device, close the second normally open contact of the second valve opening switch, so as to realize the electrical connection between the valve opening input module and the limit device; wherein, the limit device generates an open limit feedback signal when detecting that the fire damper is opened to a preset open position; and the valve opening input module is used to send the open limit feedback signal to the fire alarm controller.

[0010] In one embodiment of the present invention, the second switch module also includes a second valve closing switch, and the input module also includes a valve closing input module, wherein: the second valve closing switch is electrically connected to the limit device, and the second normally open contact of the second valve closing switch is connected to the valve closing input module, and is used to respond to the closing limit feedback signal sent by the limit device, close the second normally open contact of the second valve closing switch to achieve the electrical connection between the valve closing input module and the limit device; wherein the limit device generates a closing limit feedback signal when detecting that the fire damper is closed to a preset closing position; the valve closing input module is used to send the closing limit feedback signal to the fire alarm controller.

[0011] In one embodiment of the present invention, the valve opening circuit between the first switch module / the local control button and the fire damper is also connected to the normally closed contact of the second valve closing switch, so as to disconnect the valve opening circuit in response to the remote valve closing control signal.

[0012] In one embodiment of the present invention, the third normally open contact of the second valve closing switch is connected to an external smoke exhaust fan and is configured to close when triggered by the closing limit feedback signal, so that the closing limit feedback signal is sent to the smoke exhaust fan.

[0013] In one embodiment of the present invention, the module box also includes: a valve open limit indicator light, which is arranged on the box body and connected to the first normally open contact of the second valve open switch, and is used to be lit when the first normally open contact of the second valve open switch is closed; wherein the open limit feedback signal triggers the closure of the first normally open contact of the second valve open switch; a valve close limit indicator light, which is arranged on the box body and connected to the first normally open contact of the second valve close switch, and is used to be lit when the first normally open contact of the second valve close switch is closed; wherein the closed limit feedback signal triggers the closure of the first normally open contact of the second valve close switch.

[0014] In one embodiment of the present invention, the valve open limit indicator light, the valve close limit indicator light and the local control button are arranged on the same side of the module box.

[0015] In an embodiment of the present invention, the first switch module is a relay.

[0016] In one embodiment of the present invention, a plurality of equally spaced cable glands are installed on the bottom wall of the module box.

[0017] In one embodiment of the present invention, a terminal block for connecting various devices in the module box with various devices outside the module box is installed in the module box.

[0018] In one embodiment of the present invention, a method for controlling a fire damper is also provided, and the fire damper is controlled using a module box for controlling the fire damper as described in any of the above items, and the method includes: the output module of the module box receives a remote control instruction of a fire alarm controller and generates a remote control signal; the first switch module of the module box, under the triggering of the remote control signal, conducts an electrical connection path between the output module and the fire damper; or the local control button of the module box responds to an external local control instruction and conducts an electrical connection path with the fire damper; the fire damper is opened or closed under the action of the remote control signal or the local control instruction, and sends a position feedback signal; the input module of the module box receives the position feedback signal, and sends the position feedback signal to the fire alarm controller.

[0019] As described above, a module box for controlling a fire damper and a method for controlling a fire damper of the present invention have the following beneficial effects: by providing an output module on the module box, a remote control signal is generated under the action of an external fire alarm controller, and by triggering the first switch module to close, an electrical connection between the output module and the fire damper is established, so that the fire damper can be opened and closed under the action of the remote control signal. In addition, a local control button is provided on the module box, and an electrical connection between the local control button and the fire damper is established through on-site manual control, so that the fire damper can be opened and closed. By integrating the output module and the local control button on the module box at the same time, remote control and on-site control are combined, so that when one of the methods fails, the fire damper can still be controlled by another method, thereby improving the fault tolerance and overall safety of the module box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of information interaction between a module box for controlling a fire damper, a controller and a fire damper provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the electrical principle of a module box controlling a fire damper provided in an embodiment of the present invention;

[0022] Figure 3 Another electrical schematic diagram of a module box controlling a fire damper provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the electrical principle of remote control instructions and feedback signals provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the electrical principle of the feedback signal and input module or smoke exhaust fan provided in an embodiment of the present invention;

[0025] Figure 6A schematic diagram of relay pins provided in an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the structure of a module box provided in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the internal structure of a module box provided in an embodiment of the present invention;

[0028] Fig. 9 A schematic flow chart of a method for controlling a fire damper provided in an embodiment of the present invention;

[0029] Component number description:

[0030] 100, box body, 110, valve open limit indicator light; 120, valve close limit indicator light; 130, terminal block; 140, guide rail; 150, cable gland; 160, grounding bolt; 170, nut assembly; 200, output module; 210, valve open output module; 220, valve close output module; 300, first switch module; 310, first valve open switch; 320, first valve close switch; 400, local control button; 410, start control button; 420, stop control button; 500, input module; 510, valve open input module; 520, valve close input module; 600, second switch module; 610, second valve open switch; 620, second valve close switch; 700, fire damper; 710, valve body; 720, motor; 730, limit device; 800, fire alarm controller. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0034] The inventors found that fire dampers need to be tested regularly, and fire dampers are usually installed at higher positions. However, since existing fire dampers lack the function of on-site control, during the experiment, when the valve needs to be reset after closing, the operator needs to climb to a higher position and reset the fire damper by turning the fire damper body. It can be seen that this control method of fire dampers is not only time-consuming and troublesome, but also poses certain hidden dangers to the personal safety of operators. Especially in the event of a fire, almost no one can climb to a high place to perform the reset operation, which may lead to extremely serious consequences.

[0035] The present invention provides a module box for controlling a fire damper. An output module is provided on the module box so that a remote control signal is generated under the action of an external fire alarm controller, and an electrical connection between the output module and the fire damper is established by triggering the closing of a first switch module, so that the fire damper is opened and closed under the action of the remote control signal. In addition, a local control button is provided on the module box, and an electrical connection between the local control button and the fire damper is established through on-site manual control, so that the fire damper is opened and closed. By integrating the output module and the local control button on the module box at the same time, remote control and on-site control are combined, so that when one of the methods fails, the fire damper can still be controlled by another method, thereby improving the fault tolerance and overall safety of the module box. Furthermore, since the module box of the present invention has a local control function, the operator does not need to climb high to achieve the reset of the fire damper, thereby greatly reducing the safety risk of the operator during the reset process and improving the convenience of operation. In addition, after receiving the remote valve closing control signal sent by the external fire alarm controller, the module box described in the present invention will automatically disconnect the valve opening circuit between the first switch module / local control button and the fire damper to prevent the valve opening operation, thereby ensuring the convenience of reset while improving the overall safety.

[0036] See also Figure 1The module box includes a box body 100, an output module 200, a first switch module 300 and a local control button 400. The box body 100 of the module box is used to accommodate various electrical components and modules. The output module 200 is arranged in the box body 100, and is connected to the external fire alarm controller 800 for communication, and is used to receive the remote control command of the fire alarm controller 800 and generate a remote control signal. Among them, the remote control signal is used to control the opening and closing of the external fire damper 700, so that in the event of a fire, the motor 720 on the fire damper 700 can be driven by remote control to close the valve body 710 to improve fire safety. The first switch module 300 is arranged in the box body 100 and is electrically connected to the output module 200, and is used to realize the electrical connection between the output module 200 and the fire damper 700 under the triggering of the remote control signal, so that the remote control signal controls the fire damper 700 to open or close. Specifically, the first switch module 300, under the triggering of the remote control signal, opens or closes the connection circuit between the fire damper 700 and the output module 200, so that the fire damper 700 is opened or closed under the action of the remote control signal sent by the output module 200. The local control button 400 is arranged on the box 100 and extends from the outer surface of the box 100 to the inside of the box 100, and is used to respond to the external local control command to trigger the electrical connection path with the fire damper 700, so that the local control command controls the fire damper 700 to open or close. The outer surface of the local control button 400 protrudes from the outside of the box 100, which is convenient for the operator to directly control it on site. When the fire damper 700 needs to be closed, the operator presses the local control button 400, which, under the action of the external local control command, opens the electrical connection path with the motor 710 on the fire damper 700, thereby realizing the local control of the valve body 720. In this way, when remote control fails or in an emergency, operators can take timely measures to prevent the fire from spreading.

[0037] See also Figure 1In one embodiment of the present invention, the output module 200 includes a valve opening output module 210, and the first switch module 300 includes a first valve opening switch 310, wherein: the valve opening output module 210 is connected to the fire alarm controller 800 for communication, and is used to receive the remote valve opening instruction of the remote control instruction, and perform signal analysis to generate a remote valve opening control signal; the first valve opening switch 310 is used to be turned on under the triggering of the remote valve opening control signal, so as to realize the electrical connection between the valve opening output module 210 and the fire damper 700, so that the remote valve opening control signal controls the fire damper 700 to open. The valve opening output module 210 is installed in the box 100 and communicates with the external fire alarm controller 800. When the fire damper 700 needs to be opened remotely, the fire alarm controller 800 sends a remote valve opening instruction to the valve opening output module 210. After receiving the remote valve opening command, the valve opening output module 210 performs signal analysis on the remote valve opening command, thereby converting the remote valve opening command into a signal format suitable for internal circuit processing, forming a remote valve opening control signal and sending it to the first valve opening switch 310. Under the action of the remote valve opening control signal, the first valve opening switch 310 closes the electrical connection path between the valve opening output module 210 and the fire damper 700, so that the fire damper 700 is opened under the action of the remote valve opening control signal.

[0038] The first switch module 300 can be a relay or an electronic switch. In one embodiment of the present invention, the first switch module 300 is a relay. Specifically, considering that the opening control terminal and the closing control terminal of the fire damper 700 have a common terminal and are connected to two control circuits at the same time, it may cause the power supply of two different control circuits to be short-circuited, resulting in a short circuit. To avoid this problem, the first valve opening switch 310 is a relay so that it has an isolation function. Figure 1 , Figure 2 , Figure 6 As shown, the valve opening output module 210 is connected to the 13th and 14th terminals of the first valve opening switch 310, and the 5th and 9th terminals of the first valve opening switch 310 are connected to the corresponding terminals of the motor of the fire damper 700. When the valve opening output module 210 outputs the remote valve opening control signal, the 5th and 9th terminals of the first valve opening switch 310 are closed, and the connection path between the valve opening output module 210 and the corresponding terminals on the motor 720 of the fire damper 700 is connected, so that the remote valve opening control signal controls the motor 720 of the fire damper 700, so that the fire damper 700 is driven by the motor 720 to open.

[0039] See also Figure 1 , Figure 2 and Figure 4In one embodiment of the present invention, the output module 200 further includes a valve closing output module 220, and the first switch module 300 further includes a first valve closing switch 320, wherein: the valve closing output module 220 is connected to the fire alarm controller 800 for communication, and is used to receive the remote valve closing instruction of the remote control instruction, and perform signal analysis to generate a remote valve closing control signal; the first valve closing switch 320 is used to be turned on under the triggering of the remote valve closing control signal, and realize the electrical connection between the valve closing output module 220 and the fire damper 700, so that the remote valve closing control signal controls the fire damper 700 to close. The valve closing output module 220 is installed in the box 100 and communicates with the external fire alarm controller 800. When the fire damper 700 needs to be closed remotely, the fire alarm controller 800 sends a remote valve closing command to the valve closing output module 220. The valve closing output module 220 transmits the received remote valve closing command in multiplex signals by setting different contacts to achieve different control operations, and generates a remote valve closing control signal, which is sent to the first valve closing switch 320. The first valve closing switch 320, triggered by the remote valve closing control signal, turns on the electrical connection between the valve closing output module 220 and the fire damper 700, so that the fire damper 700 is closed under the action of the remote valve closing control signal. Preferably, the first valve closing switch 320 is a relay. Figure 2 , Figure 4 and Figure 6 As shown, the valve closing output module 220 is connected to the 13th and 14th terminals of the first valve closing switch 320, and the 5th and 9th terminals of the first valve closing switch 320 are connected to the corresponding terminals of the motor of the fire damper 700. When the valve closing output module 220 outputs the remote valve closing control signal, the 5th and 9th terminals of the first valve closing switch 320 are closed, and the connection path between the valve closing output module 220 and the corresponding terminals on the motor 720 of the fire damper 700 is connected, so that the remote valve closing control signal controls the motor 720 of the fire damper 700, so that the fire damper 700 is closed under the drive of the motor 720.

[0040] See also Figure 1 , Figure 2 and Figure 7In one embodiment of the present invention, the local control button 400 includes: a start control button 410, which is arranged on the box 100 and is used to respond to the local valve opening instruction of the local control instruction, and conduct the electrical connection path with the fire damper 700, so that the local valve opening instruction controls the fire damper 700 to perform an opening operation; a stop control button 420, which is arranged on the box 100 and is used to respond to the local valve closing instruction of the local control instruction, and conduct the electrical connection path with the fire damper 700, so that the local valve closing instruction controls the fire damper 700 to perform a closing operation. When the fire damper 700 needs to be opened by local control, the operator presses the start control button 410, thereby conducting the electrical connection path with the fire damper 700, so that the fire damper 700 is opened under the action of the local valve opening instruction. Furthermore, when it is necessary to locally control the fire damper 700 to close, the operator stops the control button 420, thereby opening the electrical connection path with the fire damper 700, so that the fire damper 700 is closed under the action of the local valve closing command.

[0041] See also Figure 1 , Figure 2 and Figure 8 In one embodiment of the present invention, the module box further includes a second switch module 600 and an input module 500, wherein: the second switch module 600 is arranged in the box body 100 and is electrically connected to the limit device 730, and is used to be turned on under the control of the position feedback signal sent by the limit device 730, so as to realize the electrical connection between the limit device 730 and the input module 500; the input module 500 is arranged in the box body 100 and is connected to the fire alarm controller 800 for communication, so as to receive the position feedback signal and send the position feedback signal to the fire alarm controller 800. The second switch module 600 is arranged in the box body 100 and is electrically connected to the limit device 730. When the limit device 730 detects that the fire damper 700 is opened to the preset position, a position feedback signal is generated and sent to the second switch module 600 along the connected line, so that the second switch module 600 is closed, thereby turning on the electrical connection between the limit device 730 and the input module 500, so as to facilitate the transmission of the position feedback signal. The types of the limit device 730 include but are not limited to Hall effect sensors, photoelectric limit switches, inductive limit switches, etc. After receiving the position feedback signal fed back by the limit device 730, the input module 500 transmits the received position feedback signal in multiple channels by setting different contacts to realize different control operations, and sends the position feedback signal to the fire alarm controller 800 through a communication connection, so that the fire alarm controller 800 can detect the valve status in real time and make corresponding responses.

[0042] See also Figure 1 , Figure 2 , Figures 4 to 6 In one embodiment of the present invention, the second switch module 600 includes a second valve opening switch 610, and the input module 500 includes a valve opening input module 510, wherein: the second valve opening switch 610 is electrically connected to the limit device 730, and the second normally open contact of the second valve opening switch 610 is connected to the valve opening input module 510, and is used to close the second normally open contact of the second valve opening switch 610 in response to the open limit feedback signal sent by the limit device 730, so as to realize the electrical connection between the valve opening input module 510 and the limit device 730; wherein the limit device 730 generates an open limit feedback signal when detecting that the fire damper 700 is opened to a preset open position; the valve opening input module 510 is used to convert the format of the open limit feedback signal, and send the converted open limit feedback signal to the fire alarm controller 800. The second valve opening switch 610 is a relay, and is electrically connected to the limit device 730. When the limit device 730 detects that the fire damper 700 is opened to the preset position, an open limit feedback signal is generated and sent to the second valve opening switch 610 through the electrical connection circuit, triggering the second normally open contact (contacts 6, 10) of the second valve opening switch 610 to close, thereby establishing an electrical connection between the valve opening input module 510 and the limit device 730 to transmit the open limit feedback signal. After receiving the open limit feedback signal, the valve opening input module 510 sends it to the fire alarm controller 800 through the communication connection, so that the fire alarm controller 800 performs subsequent processing.

[0043] See also Figure 1 , Figure 2 , Figures 4 to 6In one embodiment of the present invention, the second switch module 600 further includes a second valve closing switch 620, and the input module further includes a valve closing input module 520, wherein: the second valve closing switch 620 is electrically connected to the limit device 730, and the second normally open contact of the second valve closing switch 620 is connected to the valve closing input module 520, and is used to close the second normally open contact of the second valve closing switch 620 in response to the closing limit feedback signal sent by the limit device 730 to realize the electrical connection between the valve closing input module 520 and the limit device 730; wherein the limit device 730 generates a closing limit feedback signal when detecting that the fire damper 700 is closed to a preset closing position; and the valve closing input module 520 is used to send the closing limit feedback signal to the fire alarm controller 800. The second valve closing switch 620 is a relay, and is electrically connected to the limit device 730. When the limit device 730 detects that the fire damper 700 is closed to the preset position, a closing limit feedback signal is generated and sent to the second valve closing switch 620 through the electrical connection circuit, triggering the second normally closed contact (contacts 2 and 10) of the second valve closing switch 620 to close, thereby establishing an electrical connection between the valve closing input module 520 and the limit device 730 to transmit the closing limit feedback signal. After receiving the closing limit feedback signal, the valve closing input module 520 sends it to the fire alarm controller 800 through the communication connection, so that the fire alarm controller 800 performs subsequent processing.

[0044] See also Figure 1 , Figure 2 and Figure 7In one embodiment of the present invention, the module box further includes: a valve open limit indicator light 110, which is arranged on the box body 100 and connected to the first normally open contact of the second valve open switch 610, and is used to be lit when the first normally open contact of the second valve open switch 610 is closed; wherein the open limit feedback signal triggers the first normally open contact of the second valve open switch 610 to close; a valve close limit indicator light 120, which is arranged on the box body 100 and connected to the first normally open contact of the second valve close switch 620, and is used to be lit when the first normally open contact of the second valve close switch 620 is closed; wherein the close limit feedback signal triggers the first normally open contact of the second valve close switch 620 to close. The valve open limit indicator light 110 and the valve close limit indicator light 120 are both installed outside the box body 100, and are used to be lit when the valve is opened / closed to a preset position. Specifically, when the limit device 730 detects that the valve is opened to the preset position, the open limit feedback signal sent will not only trigger the second normally open contact (contacts 6 and 10) of the second valve opening switch 610 to close, so as to send the signal to the fire alarm controller 800, but also trigger the first normally open contact (contacts 5 and 9) of the second valve opening switch 610 to close, and conduct the connection between the limit device 730 and the valve open limit indicator light 110, so that the valve open limit indicator light 110 is lit under the triggering of the open limit feedback signal. The working principle of the valve closed limit indicator light 120 is the same as that of the valve open limit indicator light 110, which will not be described in detail here. Furthermore, in one embodiment of the present invention, the valve open limit indicator light, the valve closed limit indicator light and the local control button are arranged on the same side of the module box, so as to facilitate the operator's control and observation.

[0045] See also Figure 1 , Figure 3 and Figure 6 , considering that when the fire damper 700 is closed, it is not allowed to open the fire damper 700 again, so in one embodiment of the present invention, the valve opening circuit between the first switch module 300 / the local control button 400 and the fire damper 700 is also connected to the normally closed contact of the second valve closing switch 620, which is used to disconnect the valve opening circuit in response to the remote valve closing control signal. Specifically, the remote valve closing control signal triggers the normally closed contact (contacts 2 and 10) of the second valve closing switch 620 to disconnect, thereby disconnecting the valve opening circuit between the first switch module 300 or the local control button 400 and the fire damper 700. Ensure that during the closing of the fire damper 700, the valve opening circuit is prevented from triggering the valve opening operation again due to misoperation, so as to improve the safety of the system.

[0046] See also Figure 1 , Figure 2, considering that when the smoke temperature in the smoke exhaust duct reaches 280°C, the smoke is already carrying fire, and smoke exhaust should be stopped at this time, otherwise the smoke and fire will spread to other parts and cause new hazards. To achieve the above purpose, in one embodiment of the present invention, the third normally open contact of the second valve closing switch 620 is connected to the external smoke exhaust fan, and is used to close under the triggering of the closing limit feedback signal, so that the closing limit feedback signal is sent to the smoke exhaust fan. The third normally open contact (contact 7, 11) of the second valve closing switch 620 is connected to the smoke exhaust fan, and it is in a disconnected state when the closing limit feedback signal is not received. When the limit device 730 detects that the fire damper 700 is closed to the preset position, the closing limit feedback signal sent triggers the third normally open contact to close, thereby conducting the electrical connection path between the limit device 730 and the smoke exhaust fan, so as to send the closing limit feedback signal to the secondary circuit of the smoke exhaust fan, thereby closing the smoke exhaust fan.

[0047] See also Figure 7 and Figure 8 In one embodiment of the present invention, a plurality of equally spaced cable glands 150 are installed on the bottom wall of the module box. A plurality of cable glands 150 are evenly distributed on the bottom wall of the module box to fix the cables.

[0048] In one embodiment of the present invention, the module box is equipped with a terminal block 130 for connecting various devices in the module box with various devices outside the module box. The terminal block 130 facilitates the arrangement of various cables and signal lines, making subsequent maintenance more convenient.

[0049] For further information, please refer to Figure 7 and Figure 8 The box body 100 is also fixed to the wall surface by a grounding bolt 160 and a nut assembly 170. In addition, a guide rail 140 is also installed in the box body 100, so that various components can be placed and installed on the guide rail 140.

[0050] In one embodiment of the present invention, a method for controlling a fire damper is further provided, for opening and closing the fire damper using the module box described in any one of the above items, the method comprising:

[0051] S1, the output module of the module box receives the remote control command of the fire alarm controller and generates a remote control signal;

[0052] S2, the first switch module of the module box is triggered by the remote control signal to connect the electrical connection path between the output module and the fire damper; or

[0053] S3, the local control button of the module box responds to the external local control command and opens the electrical connection path with the fire damper;

[0054] S4, the fire damper is opened or closed under the action of the remote control signal or the local control instruction, and a position feedback signal is sent;

[0055] S5. The input module of the module box receives the position feedback signal and sends the position feedback signal to the fire alarm controller.

[0056] See also Figure 1 , Figure 3 and Fig. 9 After receiving the remote control command from the fire alarm controller 800, the output module 200 analyzes and processes the signal to generate a remote control signal. Under the triggering of the remote control signal, the first switch module 300 activates the corresponding relay, conducts the connection between the output module 200 and the fire damper 700, and forms a closed loop, so that the motor 720 on the fire damper 700 drives the valve body 710 to open or close the operation under the action of the remote control signal. In addition, on-site control can also be performed manually. When the valve body 710 of the fire damper 700 needs to be opened or closed, the operator presses the local control button 400 on the box 100 to conduct the circuit with the fire damper 700, thereby controlling the fire damper 700 to open or close. When the fire damper 700 is opened or closed to the preset position, a position feedback signal is sent to the input module 500 through the limit device 730. After receiving the position feedback signal, the input module 500 sends the signal to the fire alarm controller 800. It should be noted that when the position feedback signal is a closed limit feedback signal, the signal can be divided into three signals and transmitted to different devices to achieve different functions by triggering different contacts of the second valve closing switch 620. Specifically, the first signal is sent to the fire alarm controller 800 through the input module 500, so that the fire alarm controller 800 can implement subsequent operation processing; the second signal is sent to the secondary circuit of the smoke exhaust fan to turn off the smoke exhaust fan; the third signal is sent to the valve closed limit indicator light 120 of the module box, so that the light is lit for easy observation.

[0057] It should be noted that, in order to highlight the innovative part of the present invention, the present embodiment does not introduce units that are not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in the present embodiment.

[0058] In summary, the present invention discloses a module box for controlling a fire damper and a control method for a fire damper. By providing an output module on the module box, a remote control signal is generated under the action of an external fire alarm controller, and by triggering the first switch module to close, an electrical connection between the output module and the fire damper is established, so that the fire damper is opened and closed under the action of the remote control signal. In addition, a local control button is provided on the module box, and an electrical connection between the local control button and the fire damper is established through on-site manual control, so that the fire damper is opened and closed. By integrating the output module and the local control button on the module box at the same time, remote control and on-site control are combined, so that when one of the methods fails, the fire damper can still be controlled by another method, thereby improving the overall safety. Furthermore, since the module box of the present invention has a local control function, the operator does not need to climb high to achieve the reset of the fire damper, thereby greatly reducing the safety risk of the operator during the reset process and improving the convenience of operation. In addition, after receiving the remote valve closing control signal sent by the external fire alarm controller, the module box of the present invention will automatically disconnect the valve opening circuit between the first switch module / local control button and the fire damper to prevent the valve opening operation, thereby ensuring the convenience of reset while also improving the overall safety. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A module box for controlling fire dampers, characterized in that: The module box comprises: Box; An output module, arranged in the box, is communicatively connected with an external fire alarm controller, and is used to receive remote control instructions from the fire alarm controller and generate remote control signals; A first switch module is disposed in the box and electrically connected to the output module, and is used to realize electrical connection between the output module and the fire damper under the triggering of the remote control signal, so that the remote control signal controls the fire damper to open or close; A local control button is arranged on the box body and is used to respond to an external local control instruction to trigger an electrical connection path with the fire damper so that the local control instruction controls the fire damper to open or close.

2. The module box for controlling fire dampers according to claim 1, characterized in that: The output module includes a valve opening output module, and the first switch module includes a first valve opening switch, wherein: The valve opening output module is connected to the fire alarm controller for receiving the remote valve opening instruction of the remote control instruction, performing signal analysis, and generating a remote valve opening control signal; The first valve opening switch is used to be turned on when triggered by the remote valve opening control signal, thereby realizing the electrical connection between the valve opening output module and the fire damper, so that the remote valve opening control signal controls the fire damper to open.

3. The module box for controlling fire dampers according to claim 2, characterized in that: The output module further includes a valve closing output module, and the first switch module further includes a first valve closing switch, wherein: The valve closing output module is in communication connection with the fire alarm controller, and is used for receiving the remote valve closing instruction of the remote control instruction, performing signal analysis, and generating a remote valve closing control signal; The first valve closing switch is used to be turned on when triggered by the remote valve closing control signal, thereby realizing the electrical connection between the valve closing output module and the fire damper, so that the remote valve closing control signal controls the fire damper to close.

4. The module box for controlling fire dampers according to claim 1, characterized in that: The local control button comprises: A start control button is arranged on the box body, and is used to respond to the valve opening instruction of the local control instruction, and to open the electrical connection path with the fire damper, so that the valve opening instruction controls the fire damper to open; A stop control button is arranged on the box body and is used to respond to the valve closing instruction of the local control instruction, and to open an electrical connection path with the fire damper so that the valve closing instruction controls the fire damper to close.

5. The module box for controlling fire dampers according to claim 1, characterized in that: The module box further comprises a second switch module and an input module, wherein: The second switch module is disposed in the box and is electrically connected to the limit device of the fire damper, and is used to be turned on under the control of the position feedback signal sent by the limit device to realize the electrical connection between the limit device and the input module; wherein the limit device generates a position feedback signal when detecting that the fire damper reaches a preset position; The input module is disposed in the box and is in communication connection with the fire alarm controller, and is used for receiving the position feedback signal and sending the position feedback signal to the fire alarm controller.

6. The module box for controlling fire dampers according to claim 5, characterized in that: The second switch module includes a second valve opening switch, and the input module includes a valve opening input module, wherein: The second valve opening switch is electrically connected to the limit device, and the second normally open contact of the second valve opening switch is connected to the valve opening input module, and is used to close the second normally open contact of the second valve opening switch in response to the open limit feedback signal sent by the limit device, so as to realize the electrical connection between the valve opening input module and the limit device; wherein, the limit device generates an open limit feedback signal when detecting that the fire damper is opened to a preset open position; The valve opening input module is used to send the open limit feedback signal to the fire alarm controller.

7. The module box for controlling fire dampers according to claim 6, characterized in that: The second switch module further includes a second valve closing switch, and the input module further includes a valve closing input module, wherein: The second valve closing switch is electrically connected to the limit device, and the second normally open contact of the second valve closing switch is connected to the valve closing input module, and is used to close the second normally open contact of the second valve closing switch in response to the closing limit feedback signal sent by the limit device to realize the electrical connection between the valve closing input module and the limit device; wherein the limit device generates a closing limit feedback signal when detecting that the fire damper is closed to a preset closing position; The valve closing input module is used to send the closing limit feedback signal to the fire alarm controller.

8. The module box for controlling fire dampers according to claim 7, characterized in that: The valve opening circuit between the first switch module / the local control button and the fire damper is also connected to the normally closed contact of the second valve closing switch, and is used to disconnect the valve opening circuit in response to the remote valve closing control signal of the remote control signal.

9. The module box for controlling fire dampers according to claim 7, characterized in that: The third normally open contact of the second valve closing switch is connected to an external smoke exhaust fan and is used to close when triggered by the closing limit feedback signal, so that the closing limit feedback signal is sent to the smoke exhaust fan.

10. The module box for controlling fire dampers according to claim 7, characterized in that: The module box also includes: A valve opening limit indicator light is arranged on the box body and connected to the first normally open contact of the second valve opening switch, and is used to be lit when the first normally open contact of the second valve opening switch is closed; wherein the opening limit feedback signal triggers the closing of the first normally open contact of the second valve opening switch; The valve closing limit indicator light is arranged on the box body and connected to the first normally open contact of the second valve closing switch, and is used to be lit when the first normally open contact of the second valve closing switch is closed; wherein, the closing limit feedback signal triggers the closure of the first normally open contact of the second valve closing switch.

11. The module box for controlling fire dampers according to claim 10, characterized in that: The valve opening limit indicator light, the valve closing limit indicator light and the local control button are arranged on the same side of the module box.

12. The module box for controlling fire dampers according to claim 1, characterized in that: The first switch module is a relay.

13. The module box for controlling fire dampers according to claim 1, characterized in that: A plurality of equally spaced cable glands are installed on the bottom wall of the module box.

14. The module box for controlling fire dampers according to claim 1, characterized in that: The module box is provided with a terminal block for connecting various devices in the module box with various devices outside the module box.

15. A method for controlling a fire damper, characterized in that: The fire damper is controlled using the module box for controlling the fire damper according to any one of claims 1 to 14, the method comprising: The output module of the module box receives the remote control instruction of the fire alarm controller and generates a remote control signal; The first switch module of the module box, under the triggering of the remote control signal, switches on the electrical connection path between the output module and the fire damper; or The local control button of the module box responds to the external local control command to open the electrical connection path with the fire damper; The fire damper is opened or closed under the action of the remote control signal or the local control instruction, and sends a position feedback signal; The input module of the module box receives the position feedback signal and sends the position feedback signal to the fire alarm controller.

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