Pipe explosion protection device

Abstract

The invention provides a pipe explosion protection device which comprises a protection cover (4), and the protection cover (4) can surround a pipeline (2) in the circumferential direction of the pipeline (2) to form a semi-closed cavity with a single outlet, and the length of the cavity in the axial direction of the pipeline (2) is larger than that of a component (3). And the single outlet is used for blocking the impact of airflow generated by burst of the pipeline (2) on peripheral components of the pipeline (2), so that the airflow directionally flows out from the single outlet.

Description

Technical Field

[0001] This invention belongs to the field of aircraft engine nacelle protection, and particularly relates to a pipe burst protection device. Background Technology

[0002] Commercial aircraft engines contain high-temperature, high-pressure air ducts within the nacelle, fan compartment, and core compartment. If these ducts rupture, a large amount of high-temperature, high-pressure gas will enter the nacelle, potentially causing excessive pressure and endangering its structural safety. Furthermore, the uncontrollable location and direction of the rupture and gas flow mean that if the ruptured gas is ejected towards sensitive electronic components, it could cause impact and overheating damage, jeopardizing engine safety.

[0003] Therefore, inventing a device that can effectively control the flow direction of high-temperature airflow after a pipe rupture while quickly removing high-pressure airflow from the cabin, thereby achieving overheat protection of cabin accessories and structures as well as cabin depressurization function, is crucial for the safety of the engine and nacelle in the event of a pipe rupture. Summary of the Invention

[0004] The technical problem that the invention aims to solve

[0005] The purpose of this invention is to provide a pipe burst protection device to solve the problems of overheating of internal accessories and structural safety of the nacelle when a high-temperature and high-pressure air pipe bursts inside the nacelle. It controls the flow direction of the high-temperature and high-pressure airflow after the pipe bursts, avoids the direct impact of the high-temperature and high-pressure airflow on surrounding components, and can also control the timely opening of the pressure relief section based on ambient temperature monitoring to release the high-temperature and high-pressure airflow inside the nacelle, reduce the pressure inside the nacelle, and improve the safety of engine accessories and nacelle structure under pipe burst conditions.

[0006] Technical solutions to solve technical problems

[0007] According to one embodiment of the present invention, a burst pipe protection device is provided, which is disposed in a cabin area consisting of a casing and a shroud arranged from the inside out with the same axis. A pipe parallel to the axis and allowing gas to pass through is disposed within the cabin area, and components are disposed near the pipe. The burst pipe protection device is characterized in that...

[0008] The device includes a protective cover configured to surround the pipe circumferentially, and is a semi-enclosed cavity with a length along the axial direction of the pipe that is longer than the length of the component and has a single outlet. This is used to block the impact of airflow generated by the pipe burst on the surrounding components of the pipe, allowing the airflow to flow out directionally from the single outlet.

[0009] The pipe explosion protection device according to one of the embodiments of the present application, wherein the cavity of the protection cover is formed by a first baffle, a second baffle, a third baffle, and a left baffle and a right baffle arranged on both sides of the protection cover, which are connected in sequence.

[0010] The pipe explosion protection device according to one of the embodiments of the present application, wherein the first baffle is arranged on the side of the pipeline with a gas release valve, and is designed with a through hole for the gas release valve to pass through, for blocking the impact of the airflow generated by the pipeline explosion on the gas release valve, the second baffle is arranged between the pipeline and the component different from the gas release valve in the circumferential direction, for blocking the impact of the airflow generated by the pipeline explosion on the component, the third baffle is arranged between the pipeline and the casing, for blocking the impact of the airflow generated by the pipeline explosion on the casing, and the left baffle and the right baffle are designed with circular holes for the pipeline to pass through.

[0011] The pipe explosion protection device according to one of the embodiments of the present application, wherein the first baffle is of a curved surface type, and when the curved surface of the first baffle is taken as a center and the bending angle of the curved surface in the circumferential direction is taken as α, it satisfies 60°≤α≤90°.

[0012] The pipe explosion protection device according to one of the embodiments of the present application, wherein the second baffle is of a curved surface type, and when the curved surface of the second baffle is taken as a center and the bending angle of the curved surface in the circumferential direction is taken as β, it satisfies 60°≤β≤90°.

[0013] The pipe explosion protection device according to one of the embodiments of the present application, wherein the protection cover further comprises a connecting baffle for connecting the first baffle and the second baffle.

[0014] The pipe explosion protection device according to one of the embodiments of the present application, wherein the protection cover is made of a high-temperature-resistant metal material with low thermal conductivity.

[0015] The pipe explosion protection device according to one of the embodiments of the present application, further comprising a pressure relief part arranged on the cabin cover, and the outlet of the protection cover is directed towards the pressure relief part, so that when the airflow flows out of the outlet, the airflow is directed to flow towards the pressure relief part, thereby releasing the airflow in the cabin area.

[0016] The blast tube protection device according to the embodiment of the present application, wherein the pressure relief part comprises a door plate, a hinge for fixing a fixed end of the door plate to the nacelle to control the door plate to be freely rotatable relative to the nacelle, and a controller arranged on the door plate for triggering the door plate to open.

[0017] The blast tube protection device according to the embodiment of the present application, further comprising at least one sensor arranged at an outlet of the protection cover for detecting temperature change of the outlet and connected to the controller of the pressure relief part through at least one cable, when the temperature change rate detected by the at least one sensor is greater than a specified threshold, a signal transmitted by the sensor is sent to the controller, and the pressure relief part is opened to release the airflow in the nacelle area.

[0018] Effects of the Invention

[0019] According to the present application, the overheating of the nacelle accessories and the safety of the nacelle structure can be solved when the high-pressure gas tube in the nacelle bursts, the flow direction of the high-temperature airflow after the tube bursts is controlled, the direct impact of the high-temperature airflow on the surrounding components is avoided, and the timely opening of the pressure relief part can be monitored and controlled according to the ambient temperature, the high-temperature and high-pressure airflow in the nacelle is released, the pressure in the nacelle is reduced, and the safety of the engine accessories and the nacelle structure under the condition of the tube burst is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present disclosure can be better understood by describing the exemplary embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0021] Figure 1 is a perspective view showing that the blast tube protection device according to the embodiment 1 of the present application is arranged in the engine nacelle.

[0022] Figure 2A is a sectional view showing that the blast tube protection device according to the embodiment 1 of the present application is arranged from the circumferential direction.

[0023] Figure 2B is a sectional view showing that the blast tube protection device according to the embodiment 1 of the present application is arranged from the axial direction.

[0024] Figure 3 is a specific structural schematic view showing that the blast tube protection device according to the embodiment 1 of the present application is arranged in the engine nacelle.

[0025] Figure 4 is an exploded schematic view showing the protection cover of the blast tube protection device according to the embodiment 1 of the present application.

[0026] Figure 5is a sectional view showing a protective cover of the burst pipe protection device of Embodiment 1 of the present application as viewed in the circumferential direction.

[0027] Figure 6 is an exploded schematic view showing a pressure relief portion of the burst pipe protection device of Embodiment 1 of the present application.

[0028] Figure 7 is a sectional view showing the burst pipe protection device of Embodiment 2 of the present application as viewed in the axial direction.

[0029] Figure 8A is a schematic view showing a specific structure in which the burst pipe protection device of Embodiment 2 of the present application is fitted in an engine nacelle.

[0030] Figure 8B is a schematic enlarged view showing a sensor of the burst pipe protection device of Embodiment 2 of the present application mounted on a protective cover.

[0031] Explanation of Reference Numerals:

[0032] 0 nacelle, 1 engine case, 2 pipe, 3 component, 4 protective cover, 5 first sensor, 6 second sensor, 7 second cable, 8 first cable, 9 pressure relief portion, 10 air release valve, 11 first baffle (valve baffle), 12 second baffle (access baffle), 13 right baffle, 14 left baffle, 15 connecting baffle, 16 third baffle (lower baffle), 17 first hinge, 18 second hinge, 19 door panel, 20 controller. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein, but rather should be construed in a broader sense. It is understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0034] In the description of the present disclosure, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is merely for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present disclosure. In addition, the terms "first", "second", "third", etc. are only for descriptive purposes and cannot be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0035] The positional words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the present disclosure. In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "assembled", "connected", "connected", "opposite", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0036] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the disclosure. The phrase appears at various places in the specification is not necessarily referring to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] <Embodiment 1>

[0038] Next, the specific structure of the engine nacelle will be described with reference to Figures 1 to 3 The specific structure of the engine nacelle will be described with reference to Figure 1 is a perspective view showing the engine nacelle in which the burst protection device of Embodiment 1 of the present application is arranged. Figure 2A is a cross-sectional view showing the burst protection device of Embodiment 1 of the present application as viewed in the circumferential direction. Figure 2B is a cross-sectional view showing the burst protection device of Embodiment 1 of the present application as viewed in the axial direction. Figure 3 is a specific structural schematic view showing the engine nacelle in which the burst protection device of Embodiment 1 of the present application is arranged.

[0039] As shown in Figures 1 to 3 The core engine cabin area is formed by the engine nacelle cover 0 and the engine case 1 of the transmitter. The core engine cabin area is a closed area. The engine case 1 and the nacelle cover 0 can be cylindrical and arranged coaxially from the inside to the outside. That is, the engine case 1 is arranged inside the nacelle cover 0 coaxially with the nacelle cover 0.

[0040] The engine cabin area formed between the engine case 1 and the nacelle cover 0 is arranged with accessories such as pipes 2, components 3, etc.

[0041] The pipe 2 is capable of passing high-temperature and high-pressure gas. The pipe 2 is arranged in parallel with the axis of the nacelle 0, i.e. the pipe 2 is arranged in the axial direction of the nacelle 0 in the engine nacelle region. The pipe 2 is further provided with a bleed valve 10 for controlling the bleeding of the pipe 2. The bleed valve 10 extends in the radial direction of the nacelle 0 from the pipe 2 towards the nacelle 0. In the vicinity of the pipe 2, an electronic component 3 arranged in the nacelle 0 is arranged as an electronic accessory. As shown in Figure 2A and 2B The component 3 is arranged at a different position in the circumferential direction of the pipe 2, here on the right side of the pipe 2, and, as viewed in the axial direction, above the pipe 2, and, as viewed in the radial direction, close to the nacelle 0.

[0042] The pipe of high-temperature and high-pressure gas is prone to burst when passing through the engine nacelle, and the pipe at the bleed valve 10 for controlling the bleeding is more prone to burst. The leaked high-temperature and high-pressure gas flow is prone to impact the component 3, the bleed valve 10 and other accessories, and the burst of the high-temperature and high-pressure gas flow will also cause the pressure in the nacelle to be too large, resulting in the destruction of the structure in the nacelle. Therefore, a device is needed for guiding the high-temperature gas flow to flow out of the nacelle in a directional manner in the burst pipe state, and for controlling the opening of the pressure relief according to the temperature monitoring, so as to release the pressure in the nacelle in time.

[0043] To this end, a burst pipe protection device composed of a protective cover 4 and a pressure relief portion 9 can be arranged in the engine nacelle region formed between the engine case 1 and the nacelle 0, so as to protect the impact of the gas flow generated due to the burst of the pipe 2 on the surrounding accessories or components, and to release the pressure in the nacelle in time.

[0044] As shown in Figure 3 , the protective cover 4 is configured as a semi-closed cavity with a single outlet in a manner capable of surrounding the pipe 2 in the circumferential direction of the pipe 2, and the length of the protective cover 4 in the axial direction of the pipe 2 is longer than the length of the component 3, so that the closed part of the cavity of the protective cover 4 can block the impact of the gas flow generated due to the burst of the pipe 2 on the surrounding components of the pipe 2, and the single outlet of the protective cover 4 can make the above-mentioned generated gas flow flow out of the single outlet in a directional manner. The surrounding components are, for example, the bleed valve 10 arranged on the pipe 2, the component 3 arranged in the vicinity of the pipe 2 or the engine case 1.

[0045] In addition, as shown in Figures 1 to 3 , the pressure relief portion 9 is arranged on the nacelle 0, and as viewed from Figure 2B , the pressure relief portion 9 is arranged below the pipe 2. As shown in Figure 3 , the single outlet of the protective cover 4 is directed towards the pressure relief portion 9, so that the above-mentioned generated gas flow can flow out of the single outlet of the protective cover in a directional manner towards the pressure relief portion 9, and the pressure relief portion 9 is opened under the action of the internal and external pressure, so as to release the burst gas flow in the nacelle.

[0046] Therefore, by configuring a semi-enclosed cavity structure protective cover near the vent valve, where there may be a risk of pipe bursting inside the nacelle, it is possible to prevent the bursting airflow from impacting the vent valve and accessories. At the same time, a single outlet is designed to guide the bursting airflow towards the pressure relief section, so that the bursting airflow flows out of the nacelle in a directional manner, preventing the accessories inside the nacelle from overheating and releasing the high pressure inside the nacelle to ensure structural safety.

[0047] Below, refer to Figures 4 to 6 The structure of the protective cover 4 and the pressure relief section 9 will be described in detail. Figure 4 This is an exploded view of the protective cover of the pipe burst protection device according to Embodiment 1 of the present invention. Figure 5 This is a cross-sectional view showing the protective cover of the burst pipe protection device of Embodiment 1 of the present invention viewed from the circumferential direction. Figure 6 This is an exploded view showing the pressure relief section of the pipe burst protection device according to Embodiment 1 of the present invention.

[0048] like Figure 4 As shown, the protective cover 4 is formed by sequentially connecting and surrounding a valve baffle 11 (serving as a first baffle), an accessory baffle 12 (serving as a second baffle), a lower baffle 16 (serving as a third baffle), and a left baffle 14 and a right baffle 13 disposed on both sides of the protective cover 4. The valve baffle 11, accessory baffle 12, and lower baffle 16 have the same axial length and are longer than the axial length of component 3.

[0049] A valve baffle 11 is disposed on the side of the pipe 2 with the vent valve 10, and is designed with a through hole to allow the vent valve 10 to pass through. That is, the protective cover 4 can be designed with a through hole in the direction of the vent valve 10 in the pipe 2, allowing the vent valve 10 to pass through. This through hole can be any shape, such as circular, oriented in the positive direction, or elongated in the longitudinal direction, as long as it allows the vent valve 10 to pass through. The pipe 2 at the vent valve 10 is more prone to bursting than other parts of the pipe. Therefore, by designing a valve baffle 11 with a through hole, interference with the vent valve can be avoided, and the impact of the airflow generated by the bursting of the pipe 2 on the vent valve 10 can be effectively blocked.

[0050] Here, a valve baffle 11 is configured for the pipe 2 equipped with a vent valve 10 to block airflow impact. However, the valve baffle 11 is also applicable to pipes without a vent valve 10, in which case a through hole is not required. Furthermore, the valve baffle 11 can be planar or curved. To better block airflow impact, it is preferable that the valve baffle 11 is formed as a curved surface whose surface bends radially towards the hood 0, i.e., its surface bends towards the vent valve. If the bending angle of this curved surface around the central axis of the pipe 2 in the circumferential direction is α, then it is preferable that 60° ≤ α ≤ 90°.

[0051] The accessory baffle 12 is connected to the valve baffle 11 and is arranged between the pipe 2 and the component 3 to block the impact of the airflow generated by the burst of the pipe 2 on the component 3. The accessory baffle 11 can be planar or curved. In order to better block the impact of the airflow, the accessory baffle 11 is preferably curved in a direction along the radial direction of the component 3. If the curved surface is curved along the circumferential direction with the center axis of the pipe 2 as the center at an angle β, it is preferable to satisfy 60°≤β≤90°.

[0052] The accessory baffle 12 and the valve baffle 11 can be connected by a connecting baffle 15. When the radius length of the curved surface of the accessory baffle 12 is different from the radius length of the curved surface of the valve baffle 11, the accessory baffle 12 and the valve baffle 11 can be smoothly connected by the connecting baffle 15. The radius length of the curved surface refers to the length with the axis of the pipe 2 as the center. The connecting baffle 15 is preferably a planar baffle, but is not limited thereto. More specifically, as shown in Figure 4 、 5 the radius length of the curved surface of the accessory baffle 12 is longer than the radius length of the curved surface of the valve baffle 11, and the accessory baffle 12 is located closer to the component 3 between the pipe 2 and the component 3, the accessory baffle 12 and the valve baffle 11 are smoothly connected by the connecting baffle 15. At this time, the component 3 can be located within the range covered by the accessory baffle 12 to block the airflow.

[0053] As shown in Figure 4 、 5 the lower baffle 16 is arranged between the pipe 2 and the casing to block the impact of the airflow generated by the burst of the pipe on the casing.

[0054] In addition, the right baffle 13 and the left baffle 14 are arranged on both sides of the axial cavity of the protective cover 4 and correspond to the cross-sectional shape in the circumferential direction formed by the valve baffle 11, the accessory baffle 12, and the lower baffle 16 connected in sequence. The right baffle 13 and the left baffle 14 are designed with through holes to allow the pipe 2 to pass through.

[0055] The single outlet of the protective cover 4 is formed by the valve baffle 11, the lower baffle 16, the left baffle 14, and the right baffle 13.

[0056] The protective cover 4 is made of a high-temperature-resistant metal material with low thermal conductivity, such as high-temperature alloy, steel, etc.

[0057] The main structure of the protective cover 4 is mainly described above. The protective cover 4 is configured in a manner that it can surround the pipeline 2 in the circumferential direction of the pipeline 2, and has a semi-closed cavity with a length in the axial direction of the pipeline 2 longer than the length of the component 3 and a single outlet, so as to block the impact of the airflow generated by the burst of the pipeline on the peripheral components of the pipeline, and direct the airflow to flow out of the single outlet.

[0058] Next, the pressure relief part 9 is described. As shown in Figure 6 , the pressure relief part 9 mainly includes a door plate 19, a first hinge 17, a second hinge 18, and a controller 20. The first hinge 17 and the second hinge 18, which are double hinges, are used to fix the fixed end of the door plate 19 to the cabin cover 0, so as to control the free rotation of the door plate 19 relative to the cabin cover 0. The controller 20 is arranged on the door plate 19, and is used to trigger the opening of the door plate 19. In the present embodiment, the controller 20 is arranged on the opposite side of the fixed end of the door plate 19, and can also be arranged at other positions of the door plate 19. When the airflow generated by the burst of the pipeline flows out of the single outlet of the protective cover 4, the airflow can be directed to flow to the door plate 19 of the pressure relief part 9. The controller 20 on the door plate 19 triggers the door plate 19 to rotate freely under the action of the pressure inside and outside the cabin area, so as to release the burst airflow in the cabin area under the control of the first hinge 17 and the second hinge 18.

[0059] <Embodiment 2>

[0060] Next, with reference to Figure 7 , Figure 8A , Figure 8B , an embodiment 2 of the present application is described. The difference between the embodiment 2 and the embodiment 1 is that a sensor is further included, which is used to detect the temperature at the outlet of the protective cover.

[0061] As shown in Figure 7 , Figure 8A , Figure 8B , at least one sensor can be arranged at the outlet of the protective cover 4. In the present embodiment 2, an example of arranging two first sensors 5 and second sensors 6 at the outlet of the protective cover 4 is given. The first sensors 5 and the second sensors 6 are respectively arranged at both ends of the outlet of the protective cover, and are used to detect the temperature change at the outlet. The first sensors 5 and the second sensors 6 are respectively connected to the controller 20 of the pressure relief part 9 through the first cable 8 and the second cable 7.

[0062] When the temperature rate of change detected by the first sensor 5 and the second sensor 6 is greater than a specified threshold, the transmission signal of the first sensor 5 and the second sensor 6 is sent to the controller 20, the pressure relief part 9 is opened, thereby releasing the airflow in the cabin area. The above-mentioned specified threshold is, for example, 20°C / s. Here, the signal transmission of the two sensors to the controller 20 is listed. But the signal transmission is set to a dual circuit redundancy structure, and the temperature abnormal signal transmission of any sensor can trigger the opening of the door plate 19.

[0063] In the second embodiment, by setting a sensor for detecting temperature at the outlet of the protective cover, when the detected temperature rate of change is greater than a specified threshold, the signal of monitoring the burst pipe is transmitted to the controller of the pressure relief device through the cable, thereby triggering the opening of the door plate, finally guiding the burst airflow to be directed out of the nacelle, preventing overheating of the cabin accessories and releasing the high pressure in the cabin to ensure the safety of the structure.

[0064] It should be understood that the above description is illustrative and not restrictive. For example, the above-described embodiments (and / or aspects thereof) can be used in combination with each other. In addition, many modifications can be made to adapt a particular situation or material to the teachings of the various embodiments of the present application without departing from the scope thereof. While materials described herein are described as being useful in various embodiments of the present application, such materials are not intended to limit the scope of the various embodiments of the present application, but rather are examples of materials that can be used in accordance with the present application. Many other embodiments will be apparent to those of ordinary skill in the art having the benefit of this disclosure. Therefore, the scope of the various embodiments of the present application should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A burst pipe protection device, disposed within a cabin area consisting of a casing and a shroud arranged from the inside out along the same axis, wherein a pipe parallel to the axis and allowing gas to pass through is disposed within the cabin area, and components disposed near the pipe, characterized in that... The device includes a protective cover configured to surround the pipe circumferentially, and is a semi-enclosed cavity with a length along the axial direction of the pipe that is longer than the length of the component and has a single outlet. This is used to block the impact of airflow generated by the pipe burst on the surrounding components of the pipe, allowing the airflow to flow out directionally from the single outlet.

2. The pipe rupture protection device as described in claim 1, characterized in that, The cavity of the protective cover is formed by a first baffle, a second baffle, a third baffle with the same length along the axial direction, and a left baffle and a right baffle arranged on both sides of the protective cover, which are connected and surrounded in sequence.

3. The pipe rupture protection device as described in claim 2, characterized in that, The first baffle is disposed on the side of the pipe with the vent valve and is designed with a through hole to allow the vent valve to pass through, thereby blocking the impact of the airflow generated by the pipe rupture on the vent valve. The second baffle is disposed between the pipe and the component whose circumferential direction is different from that of the vent valve, and is used to block the impact of the airflow generated by the pipe rupture on the component. The third baffle is disposed between the pipe and the casing to block the impact of the airflow generated by the pipe rupture on the casing. The left and right baffles are designed with circular holes to allow the pipe to pass through.

4. The pipe rupture protection device as described in claim 3, characterized in that, The first baffle is curved. When the bending angle of the curved surface of the first baffle along the circumferential direction with the central axis of the pipe as the center is α, it satisfies 60°≤α≤90°.

5. The pipe rupture protection device as described in claim 3, characterized in that, The second baffle is curved. When the bending angle of the curved surface of the second baffle along the circumferential direction with the central axis of the pipe as the center is β, it satisfies 60°≤β≤90°.

6. The pipe rupture protection device as described in claim 3, characterized in that, The protective cover also includes a connecting baffle for connecting the first baffle and the second baffle.

7. The pipe rupture protection device as described in claim 3, characterized in that, The protective cover is made of a high-temperature resistant metal material with low thermal conductivity.

8. The pipe rupture protection device according to any one of claims 1 to 7, characterized in that, It also includes a pressure relief section, which is disposed on the shroud. The outlet of the protective cover faces the pressure relief section, such that when the airflow flows out from the outlet, the airflow is directed toward the pressure relief section, thereby releasing the airflow in the cabin area.

9. The pipe rupture protection device as described in claim 8, characterized in that, The pressure relief section includes: Door panel; A hinge for securing the fixed end of the door panel to the hatch cover, thereby controlling the door panel to rotate freely and open relative to the hatch cover; and A controller, configured on the door panel, is used to trigger the door panel to open.

10. The pipe rupture protection device as described in claim 9, characterized in that, It also includes at least one sensor disposed at the outlet of the protective cover for detecting temperature changes at the single outlet, and connected to the controller of the pressure relief section via at least one cable. When the temperature change rate detected by at least one sensor is greater than a predetermined threshold, the sensor's transmission signal is sent to the controller, and the pressure relief section is opened, thereby releasing the airflow in the cabin area.

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