Thermo-sensitive wire on-off protection device and automatic fire extinguishing system comprising thermo-sensitive wire on-off protection device

Abstract

The utility model provides a thermosensitive wire on-off protection device and an automatic fire extinguishing system comprising the thermosensitive wire on-off protection device. The thermosensitive wire on-off protection device comprises an outer shell, wherein the outer shell is provided with an input port, an output port and a pressure relief port; the opening degree adjusting piece is movably arranged in the outer shell, and a first signal channel and a second signal channel are formed in the opening degree adjusting piece; the opening control part is connected with the opening adjusting part and drives the opening adjusting part to move; when the opening degree adjusting part is in a closed state, the input port and the output port are cut off by the opening degree adjusting part, and hot flue gas sequentially passes through the input port, the second signal channel and the pressure relief opening; when the opening degree adjusting piece is in the open state, hot smoke sequentially passes through the input port, the first signal channel and the output port, and the input port and the pressure relief port are stopped by the opening degree adjusting piece. In this way, heat source signal transmission of the thermosensitive line can be cut off and connected in time, and the safety of personnel working in a space provided with an automatic fire extinguishing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power, in particular to a thermal line on-off protection device and an automatic fire extinguishing system comprising the same. Background Art

[0002] The number of wind turbines equipped with automatic fire extinguishing systems is increasing year by year. To ensure timely and effective triggering of the automatic fire extinguishing system in any wind turbine nacelle, the system must possess high sensitivity and a wide fire detection range. Existing standard automatic fire extinguishing systems for wind turbines typically consist of a temperature sensor, a smoke sensor, multiple mechanical magnetic temperature-sensing power generation elements, and a small amount of thermistor wiring to form the fire detection component. In addition to the thermistor wiring, the trigger signal output by the fire detection component must pass through the fire protection PLC. If the equipment loses power or freezes, the automatic fire extinguishing system will fail, resulting in low reliability.

[0003] The principle behind the thermal wires is that when a fire occurs, the sudden increase in temperature ignites nearby thermal wires, generating hot smoke (a heat source signal). This hot smoke is then transported via a gas pipe connector to the fire extinguishing device of the automatic fire extinguishing system, which automatically activates and extinguishes the fire. This solution eliminates the need for a fire protection PLC and, once the automatic fire extinguishing system is activated, provides a more comprehensive safeguard for the wind turbine nacelle.

[0004] In practice, to ensure safe operation within spaces equipped with automatic fire extinguishing systems, it's necessary to disconnect the automatic fire extinguishing system to prevent malfunctions or misoperation. Currently, this is typically done by disconnecting the fire PLC's input and output signals or simply powering it off. However, this approach doesn't completely shut down the heat source signal transmission from the thermistor wires, making it difficult to completely disconnect the automatic fire extinguishing system and posing a potential safety threat to operators. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defect in the prior art that it is difficult to cut off the signal transmission of the thermal line, and to provide a thermal line on-off protection device and an automatic fire extinguishing system including the same.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A thermal line on-off protection device, comprising:

[0008] An outer shell is provided with an input port, an output port and a pressure relief port, wherein the input port is used to communicate with an external channel provided with a thermal line;

[0009] an opening adjustment member, the opening adjustment member being movably disposed within the outer shell, and provided with a first signal channel and a second signal channel;

[0010] An opening control unit, the opening control unit is connected to and drives the opening adjustment member to move so that the opening adjustment member switches between an open state and a closed state; when the opening adjustment member is in a closed state, the input port and the output port are cut off by the opening adjustment member, and the input port, the second signal channel, and the pressure relief port are connected in sequence; when the opening adjustment member is in an open state, the input port, the first signal channel, and the output port are connected in sequence, and the input port and the pressure relief port are cut off by the opening adjustment member.

[0011] In this technical solution, by providing this thermal line on-off protection device, when the opening adjustment member is in the closed state, the input port and output port are blocked by the opening adjustment member, and the hot flue gas (i.e., the heat source signal) passes through the input port, the second signal channel, and the pressure relief port in sequence, allowing the hot flue gas to be completely released from the pressure relief port and prevent it from escaping from the output port, thereby ensuring that the transmission of the heat source signal is cut off. When the opening adjustment member is in the open state, the hot flue gas passes through the input port, the first signal channel, and the output port in sequence. The input port and the pressure relief port are blocked by the opening adjustment member, allowing the hot flue gas to be completely output from the output port and prevent it from leaking from the pressure relief port, thereby reducing transmission losses in the thermal line on-off protection device when the heat source signal is connected. In this way, the transmission of the heat source signal of the thermal line can be timely cut off and connected.

[0012] Preferably, the opening control unit is capable of driving the opening adjustment member to rotate, so that the opening adjustment member is switched between an open state and a closed state.

[0013] In this technical solution, through the above settings, the effect of timely cutting off and connecting the heat source signal transmission of the thermosensitive line can be achieved with a relatively simple structure.

[0014] Preferably, the thermal line on-off protection device further includes a main signal channel, the main signal channel is located between the input port and the output port, the opening adjustment member is a cylinder, and the first signal channel and the main signal channel are both cylindrical cavities;

[0015] When the opening adjustment member is in a closed state, the first signal channel and the main signal channel are cut off; when the opening adjustment member is in an open state, the first signal channel and the main signal channel are connected.

[0016] In the present technical solution, through the above arrangement, the effect of cutting off or connecting the input port and the output port by rotating the opening adjustment member can be achieved with a relatively simple structure.

[0017] Preferably, the ratio of the diameter of the first signal channel to the diameter of the main signal channel is in the range of 0.3-0.6.

[0018] In the present technical solution, through the above settings, it is possible to avoid the diameter of the first signal channel being too large, resulting in a low flow rate of the hot flue gas, or the diameter of the first signal channel being too small, resulting in a low passage rate of the hot flue gas, so that the failure rate of the thermal wire on-off protection device is within a reasonable range.

[0019] Preferably, when the opening adjustment member is in a closed state, the axis of the first signal channel is perpendicular to the axis of the main signal channel; when the opening adjustment member is in an open state, the axis of the first signal channel and the axis of the main signal channel are parallel or coincide with each other.

[0020] In the present technical solution, through the above settings, the opening adjustment member can achieve the effect of timely cutting off and connecting the heat source signal transmission of the thermal line within the rotation range of 90°, and when the opening adjustment member is in the open state, the loss of the hot flue gas passage rate caused by the change in the flow direction of the hot flue gas is reduced.

[0021] Preferably, the axis of the first signal channel and the axis of the second signal channel are perpendicular to each other, and the pressure relief port is connected to the side wall of the main signal channel.

[0022] In this technical solution, through the above arrangement, the opening adjustment member can be switched from the first signal channel connecting to the output port to the second signal channel connecting to the pressure relief port within a rotation range of 90° with a relatively simple structure.

[0023] Preferably, the thermal line protection device further comprises a motor and a driving member, wherein the motor, the driving member and the opening adjustment member are connected in sequence, and the opening control unit can control the motor to drive the driving member and the opening adjustment member to move.

[0024] In this technical solution, through the above arrangement, the effect of the electrically driven opening adjustment member can be achieved with a relatively simple structure.

[0025] Preferably, the thermal line on-off protection device further includes a main signal channel, the main signal channel is located between the input port and the output port, the outer shell includes a first shell and a second shell that are sealed to each other, the main signal channel is located inside the first shell, the motor is located inside the second shell, and along the axis direction of the main signal channel, the width of the first shell is smaller than the width of the second shell; and / or,

[0026] The outer shell is also provided with a power port, and the power port is used to connect the motor to a power source.

[0027] In this technical solution, by setting the width of the first shell to be smaller than the width of the second shell, the motor can be protected within the outer shell while minimizing the volume of the outer shell, facilitating on-site installation of the thermal line on-off protection device. The provision of a power port facilitates power supply to the motor.

[0028] Preferably, the opening control unit can control the motor to drive the driving member and the opening adjustment member to reciprocate 90°, so that the opening adjustment member switches between the open and closed states; and / or,

[0029] The motor is a DC motor.

[0030] In this technical solution, by configuring the opening adjustment member to rotate 90° back and forth to switch between open and closed states, a relatively simple structure can be used to connect and disconnect the input port and output port, as well as the input port and pressure relief port. Using a DC motor allows for precise control of the opening adjustment member's rotation angle.

[0031] Preferably, the opening adjustment member is made of 304 stainless steel; and / or,

[0032] The outer shell is made of 6061 aluminum alloy; and / or

[0033] The thermal line on-off protection device further includes a port connector connected to the outside of the input port and the output port, and the material of the port connector is ABS.

[0034] In this technical solution, by setting the material of the opening adjustment member to 304 stainless steel, rust prevention can be achieved in a humid installation environment, and at the same time, the heat conduction of hot flue gas in the opening adjustment member can be reduced, further ensuring that the transmission of the heat source signal is cut off. By setting the material of the outer shell to 6061 aluminum alloy, rust prevention can be achieved in a humid installation environment, and the manufacturing cost of the thermal line on-off protection device can be reduced. By setting the port connector, waterproofing can be achieved in a humid installation environment, reducing the possibility of water entering the interior of the thermal line on-off protection device through the connection gap between the input port and the output port. Setting the material of the port connector to ABS can adapt to humid installation environments and reduce the manufacturing cost of the thermal line on-off protection device.

[0035] An automatic fire extinguishing system comprises the thermal wire on / off protection device as described in any one of the above items, a thermal wire network and a fire extinguishing device, wherein the input port is connected to the thermal wire network, and the output port is connected to the fire extinguishing device.

[0036] In this technical solution, by providing the automatic fire extinguishing system, the heat source signal transmission of the thermal sensitive line network can be cut off and connected in a timely manner, thereby avoiding the malfunction of the fire extinguishing device or its operation caused by personnel's maloperation, thereby improving the safety of personnel working in a space equipped with a fire extinguishing device.

[0037] The positive progress effect of this utility model is:

[0038] By providing this thermal line on-off protection device, when the opening adjustment member is in the closed state, the input port and output port are blocked by the opening adjustment member. Hot flue gas (i.e., the heat source signal) sequentially passes through the input port, the second signal channel, and the pressure relief port, allowing the hot flue gas to be completely released from the pressure relief port and prevented from escaping from the output port, thus ensuring that the transmission of the heat source signal is blocked. When the opening adjustment member is in the open state, the hot flue gas sequentially passes through the input port, the first signal channel, and the output port. The input port and the pressure relief port are blocked by the opening adjustment member, allowing the hot flue gas to be completely discharged from the output port and prevented from leaking from the pressure relief port. This reduces transmission losses in the thermal line on-off protection device when the heat source signal is connected. In this way, the transmission of the heat source signal through the thermal line can be timely blocked and connected. By providing this automatic fire extinguishing system, the transmission of the heat source signal through the thermal line can be timely blocked and connected, preventing the automatic fire extinguishing device from malfunctioning or causing it to operate due to human error, thereby improving the safety of personnel working in spaces equipped with automatic fire extinguishing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the three-dimensional structure of a thermal wire on-off protection device according to an embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the three-dimensional structure of an opening adjustment member according to an embodiment of the present utility model.

[0041] Figure 3 This is a schematic diagram of the longitudinal cross-section structure of the thermal wire on-off protection device according to one embodiment of the present invention when the opening adjustment member is in the closed state.

[0042] Figure 4 This is a schematic cross-sectional structural diagram of a thermal wire on-off protection device according to an embodiment of the present invention when the opening adjustment member is in a closed state.

[0043] Figure 5 This is a schematic diagram of the longitudinal cross-section structure of the thermal wire on-off protection device according to one embodiment of the present invention when the opening adjustment member is in the open state.

[0044] Figure 6 This is a schematic cross-sectional structural diagram of a thermal wire on-off protection device according to an embodiment of the present invention when the opening adjustment member is in the open state.

[0045] Description of reference numerals:

[0046] Outer shell 1

[0047] Input port 11

[0048] Output port 12

[0049] Pressure relief port 13

[0050] First housing 14

[0051] Second housing 15

[0052] Power port 16

[0053] Opening adjustment part 2

[0054] First signal channel 21

[0055] Second signal channel 22

[0056] Main signal channel 3

[0057] Drive 4

[0058] Port connector 5 DETAILED DESCRIPTION

[0059] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0060] like Figure 1 As shown, this embodiment provides a thermal line on-off protection device, which includes:

[0061] The outer shell 1 is provided with an input port 11 , an output port 12 and a pressure relief port 13 . The input port 11 is used to communicate with an external channel where a thermal line (not shown) is provided.

[0062] like Figure 2 The opening adjustment member 2 shown is movably arranged in the outer shell 1 , and is provided with a first signal channel 21 and a second signal channel 22 .

[0063] The opening control unit (not shown in the figure) is connected to and drives the opening adjustment member 2 to move, so that the opening adjustment member 2 switches between the open and closed states.

[0064] like Figure 3 、 Figure 4As shown, when the opening adjustment member 2 is in the closed state, the input port 11 and the output port 12 are cut off by the opening adjustment member 2, and the input port 11, the second signal channel 22, and the pressure relief port 13 are connected in sequence, so that the hot flue gas (i.e., the heat source signal) passes through the input port 11, the second signal channel 22, and the pressure relief port 13 in sequence, so that the hot flue gas is completely released from the pressure relief port 13 and will not escape from the output port 12, thereby ensuring that the transmission of the heat source signal is cut off.

[0065] like Figure 5 、 Figure 6 As shown, when the opening adjustment member 2 is in the open state, the input port 11, the first signal channel 21, and the output port 12 are sequentially connected. The input port 11 and the pressure relief port 13 are blocked by the opening adjustment member 2. The hot flue gas passes through the input port 11, the first signal channel 21, and the output port 12 in sequence. The input port 11 and the pressure relief port 13 are blocked by the opening adjustment member 2, so that the hot flue gas is completely output from the output port 12 and does not leak from the pressure relief port 13. This reduces transmission losses in the thermal line on-off protection device when the heat source signal is connected. In this way, the heat source signal transmission of the thermal line can be timely cut off and connected.

[0066] In this embodiment, the opening control unit is capable of driving the opening adjustment member 2 to rotate, thereby switching the opening adjustment member 2 between open and closed states. This allows for a relatively simple structure to achieve the effect of timely disconnecting and connecting the heat source signal transmission of the thermistor line. Of course, in other embodiments, the opening control unit can also drive the opening adjustment member to move, thereby switching the opening adjustment member between open and closed states.

[0067] In this embodiment, the thermal line on-off protection device also includes a main signal channel 3, which is located between the input port 11 and the output port 12. The opening adjustment member 2 is a cylinder, and the first signal channel 21 and the main signal channel 3 are both cylindrical cavities.

[0068] When the opening adjustment member 2 is closed, the first signal channel 21 and the main signal channel 3 are disconnected; when the opening adjustment member 2 is open, the first signal channel 21 and the main signal channel 3 are connected. In this way, the effect of disconnecting or connecting the input port 11 and the output port 12 by rotating the opening adjustment member 2 can be achieved with a relatively simple structure. Of course, in other embodiments, the cross-sectional shapes of the first signal channel and the main signal channel can be set to non-circular shapes, and the opening adjustment member can also be set to other shapes, such as a sheet-shaped member that adapts to the cross-sectional shape of the main signal channel.

[0069] Please refer back to Figure 3In this embodiment, the ratio of the diameter d of the first signal channel 21 to the diameter D of the main signal channel 3 is 0.4. This prevents the hot flue gas flow rate from being too low due to an overly large diameter of the first signal channel 21, or the hot flue gas flow rate from being too low due to an underlying diameter of the first signal channel 21, thereby keeping the failure rate of the thermal wire on / off protection device within a reasonable range. Of course, in other embodiments, the ratio of the diameter of the first signal channel 21 to the diameter of the main signal channel 3 can also take other values ​​within the range of 0.3-0.6.

[0070] In this embodiment, when the opening adjustment member 2 is in the closed state, the axis A1 of the first signal channel 21 is perpendicular to the axis A2 of the main signal channel 3; when the opening adjustment member 2 is in the open state, the axis A1 of the first signal channel 21 and the axis A2 of the main signal channel 3 coincide with each other. In this way, the opening adjustment member 2 can achieve the effect of timely cutting off and connecting the heat source signal transmission of the thermal wire within a 90° rotation range, and when the opening adjustment member 2 is in the open state, the loss of the hot flue gas flow rate caused by the change in the flow direction of the hot flue gas is reduced. Of course, in other embodiments, when the opening adjustment member is in the open state, the axis of the first signal channel and the axis of the main signal channel can also be set to be parallel to achieve a similar effect; the rotation range of the opening adjustment member can also be adaptively adjusted according to other structures of the thermal wire on-off protection device.

[0071] Please refer back to Figure 2 In this embodiment, the axis A1 of the first signal channel 21 and the axis A3 of the second signal channel 22 are perpendicular to each other, and the pressure relief port 13 communicates with the side wall of the main signal channel 3. This allows a relatively simple structure to achieve switching between the first signal channel 21 connecting to the output port 12 and the second signal channel 22 connecting to the pressure relief port 13 within a 90° rotation range of the opening adjustment member 2.

[0072] In this embodiment, the thermal line protection device further includes a motor (not shown) and a driver 4. The motor, driver 4, and opening adjustment member 2 are sequentially connected. The opening control unit controls the motor to drive the driver 4 and the opening adjustment member 2 to move. This allows the opening adjustment member 2 to be electrically driven with a relatively simple structure.

[0073] Please refer back to Figure 1 In this embodiment, the outer shell 1 includes a first shell 14 and a second shell 15, which are sealed together. The main signal channel 3 is located within the first shell 14, and the motor is located within the second shell 15. Along the axis C of the main signal channel 3, the width L1 of the first shell 14 is smaller than the width L2 of the second shell 15. This allows the motor to be protected within the outer shell 1 while minimizing the volume of the outer shell 1, facilitating on-site installation of the thermal line on / off protection device.

[0074] In this embodiment, the outer shell 1 is further provided with a power port 16, which is used to connect the power supply to the motor. In this way, it is convenient to supply power to the motor.

[0075] In this embodiment, the opening control unit can control the motor to drive the driving member 4 and the opening adjustment member 2 to rotate back and forth 90°; so that the opening adjustment member 2 can switch between the open and closed states, and the connection and cutoff of the input port and the output port, and the input port and the pressure relief port can be achieved with a relatively simple structure.

[0076] In this embodiment, the motor is a DC motor, which can facilitate precise control of the rotation angle of the opening adjustment member 2.

[0077] In this embodiment, the material of the opening adjustment member 2 is 304 stainless steel. In this way, it can be rust-proof in a humid installation environment, and at the same time, the heat conduction of the hot flue gas in the opening adjustment member 2 can be reduced, further ensuring that the transmission of the heat source signal is cut off.

[0078] In this embodiment, the outer shell 1 is made of 6061 aluminum alloy, which can prevent rust in a humid installation environment and reduce the manufacturing cost of the thermal line on-off protection device.

[0079] In this embodiment, a port connector 5 is provided to be connected to the outside of the input port 11 and the output port 12, which can prevent water from entering the interior of the thermal line on-off protection device through the connection gap between the input port 11 and the output port 12. The material of the port connector 5 is ABS (Acrylonitrile Butadiene Styrene plastic), which can adapt to humid installation environments and reduce the manufacturing cost of the thermal line on-off protection device.

[0080] In this embodiment, another similar port connector 5 is provided to connect to the outside of the power port 16 to further reduce the possibility of water ingress. Of course, in other embodiments, the materials of the opening adjustment member, the outer shell, and the port connector can be adjusted accordingly according to the actual needs of the installation environment and the requirements of cost control.

[0081] This embodiment also provides an automatic fire extinguishing system, comprising the aforementioned thermal line on / off protection device, a thermal line network, and a fire extinguishing device. Input port 11 is connected to the thermal line network, and output port 12 is connected to the fire extinguishing device. This system can timely disconnect and connect heat source signal transmission from the thermal line network, preventing malfunction of the fire extinguishing device or its activation due to human error, thereby improving the safety of personnel operating in a space equipped with a fire extinguishing device.

[0082] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A thermal line on-off protection device, characterized in that: It includes: An outer shell is provided with an input port, an output port and a pressure relief port, wherein the input port is used to communicate with an external channel provided with a thermal line; an opening adjustment member, the opening adjustment member being movably disposed within the outer shell, and provided with a first signal channel and a second signal channel; an opening control unit connected to and driving the opening adjustment member to move so as to switch the opening adjustment member between an open state and a closed state; When the opening adjustment member is in a closed state, the input port and the output port are blocked by the opening adjustment member, and the input port, the second signal channel, and the pressure relief port are connected in sequence; when the opening adjustment member is in an open state, the input port, the first signal channel, and the output port are connected in sequence, and the input port and the pressure relief port are blocked by the opening adjustment member.

2. The thermal line on-off protection device according to claim 1, characterized in that: The opening control unit can drive the opening adjustment member to rotate so as to switch the opening adjustment member between an open state and a closed state.

3. The thermal line on-off protection device according to claim 2, characterized in that: The thermal line on-off protection device further includes a main signal channel, the main signal channel is located between the input port and the output port, the opening adjustment member is a cylinder, and the first signal channel and the main signal channel are both cylindrical cavities; When the opening adjustment member is in a closed state, the first signal channel and the main signal channel are cut off; when the opening adjustment member is in an open state, the first signal channel and the main signal channel are connected.

4. The thermal line on-off protection device according to claim 3, characterized in that: The ratio of the diameter of the first signal channel to the diameter of the main signal channel is in a range of 0.3-0.

6.

5. The thermal line on-off protection device according to claim 3, characterized in that: When the opening adjustment member is in a closed state, the axis of the first signal channel is perpendicular to the axis of the main signal channel; when the opening adjustment member is in an open state, the axis of the first signal channel and the axis of the main signal channel are parallel or coincide with each other.

6. The thermal line on-off protection device according to claim 3, characterized in that: The axis of the first signal channel and the axis of the second signal channel are perpendicular to each other, and the pressure relief port is connected to the side wall of the main signal channel.

7. The thermal line on-off protection device according to claim 1, characterized in that: The thermal line protection device further includes a motor and a driving member, which are connected in sequence. The opening control unit can control the motor to drive the driving member and the opening adjusting member to move.

8. The thermal line on-off protection device according to claim 7, characterized in that: The thermal line on-off protection device further includes a main signal channel, the main signal channel is located between the input port and the output port, the outer shell includes a first shell and a second shell that are sealed to each other, the main signal channel is located inside the first shell, the motor is located inside the second shell, and along the axis of the main signal channel, the width of the first shell is smaller than the width of the second shell; and / or, The outer shell is also provided with a power port, and the power port is used to connect the motor to a power source.

9. The thermal line on-off protection device according to claim 7, characterized in that: The opening control unit can control the motor to drive the driving member and the opening adjustment member to reciprocate 90 degrees, so that the opening adjustment member switches between the open and closed states; and / or, The motor is a DC motor.

10. The thermal line on-off protection device according to claim 1, characterized in that: The material of the opening adjustment member is 304 stainless steel; and / or, The outer shell is made of 6061 aluminum alloy; and / or The thermal line on-off protection device further includes a port connector connected to the outside of the input port and the output port, and the material of the port connector is ABS.

11. An automatic fire extinguishing system, characterized in that: It comprises the thermal wire on-off protection device according to any one of claims 1 to 10, a thermal wire network and a fire extinguishing device, wherein the input port is connected to the thermal wire network, and the output port is connected to the fire extinguishing device.

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