A CFRP cable corrosion and flame retardant protection device

Abstract

The present application relates to a kind of CFRP cable corrosion-resistant flame-retardant protection device, to solve the current CFRP cable covering flame-retardant layer long-term exposure in outdoor environment causes the technical problem of affecting flame-retardant effect, including CFRP cable group, the present application improves the structure of existing CFRP cable corrosion-resistant flame-retardant protection device, by setting flame-retardant inner shell outside CFRP cable group, set blocking piece outside flame-retardant inner shell, set storage mechanism outside blocking piece, set trigger mechanism at the bottom of storage mechanism, set torsion spring outside storage mechanism, set corrosion-resistant outer shell outside torsion spring, so that in the process of routine maintenance, by storage mechanism, flame retardant is injected, then by trigger mechanism, flame-retardant liquid is sprayed to flame-retardant inner shell, prevent the traditional CFRP cable long-term exposure in outdoor environment causes the failure of flame retardant to occur, prolong its service life, prevent flame retardant failure, improve flame-retardant effect.

Description

Technical Field

[0001] This invention relates to the field of CFRP cable technology, and in particular to a CFRP cable anti-corrosion and flame-retardant protection device. Background Technology

[0002] CFRP cable refers to carbon fiber reinforced polymer cable. Carbon fiber reinforced polymer (CFRP) is a composite material formed using carbon fiber or carbon fiber fabric as reinforcement and resin, ceramics, metals, cement, carbonaceous materials, or rubber as the matrix. It features high specific strength, high specific modulus, fatigue resistance, and designability. Initially, CFRP was mainly used in aerospace, military products, and vehicle engineering. With technological advancements, CFRP cables have also found widespread application in long-span structures. For example, in cable-stayed dome structures, CFRP cables, due to their lightweight, high strength, good corrosion resistance, and low temperature sensitivity, are used to replace traditional steel cables to improve structural stability and durability.

[0003] Existing CFRP cable corrosion and flame retardancy protection methods primarily involve coating the outside of the CFRP cable with a flame-retardant layer or applying an anti-corrosion coating. However, this approach is problematic because the flame-retardant layer and anti-corrosion coating are susceptible to detachment due to wind, rain, snow, sunlight, and atmospheric chemicals during long-term outdoor exposure. Over time, these materials corrode, leading to performance degradation and even breakage. Furthermore, in critical structures such as bridges and buildings, the integrity of the CFRP cable is crucial to the overall structural safety. Fire damage to the CFRP cable can cause structural failure and serious safety accidents. Therefore, designing a protective device with excellent corrosion resistance and flame retardancy is of paramount importance. In light of this, we propose a CFRP cable corrosion and flame retardant protection device. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide a CFRP cable anti-corrosion and flame-retardant protection device to solve the technical problem that the flame-retardant layer of the current CFRP cable is exposed to the outdoor environment for a long time, which affects the flame-retardant effect.

[0005] To achieve the objectives of this invention, the technical solution adopted is as follows: A CFRP cable anti-corrosion and flame-retardant protection device is designed, comprising a CFRP cable assembly, a flame-retardant inner shell sleeved on the outer side of the CFRP cable assembly, a sliding mechanism sleeved on the outer side of the CFRP cable assembly opposite to the end of the flame-retardant inner shell, a blocking component movably disposed on the outer side of the flame-retardant inner shell, a triggering mechanism disposed at the end of the flame-retardant inner shell away from the sliding mechanism, the triggering mechanism being connected to the blocking component, mounting discs disposed at both ends of the flame-retardant inner shell opposite to the triggering mechanism, a storage mechanism disposed on the mounting discs, a flame-retardant outer shell sleeved on the outer side of the mounting discs, a torsion spring sleeved on the outer side of the flame-retardant outer shell, and an anti-corrosion outer shell sleeved on the outer side of the torsion spring. This invention provides a flame-retardant inner shell over the CFRP cable assembly, a blocking component over the outer side of the flame-retardant inner shell, a storage mechanism over the outer side of the blocking component, a triggering mechanism at the bottom of the storage mechanism, a torsion spring over the outer side of the storage mechanism, and a corrosion-resistant outer shell over the outer side of the torsion spring. This allows flame retardant to be injected through the storage mechanism during routine maintenance, and then sprayed onto the flame-retardant inner shell through the triggering mechanism.

[0006] Preferably, the sliding mechanism includes a top shell, a connecting sleeve, an annular groove, and a sliding groove. The connecting sleeve is connected to the bottom end of the top shell, the annular groove is formed at the bottom end of the connecting sleeve, and the sliding groove is formed at the bottom end of the connecting sleeve opposite to the annular groove. The annular groove is fitted onto the end of the flame-retardant inner shell away from the triggering mechanism. A plurality of blocking elements are movably inserted into the sliding groove, and the end of the torsion spring away from the triggering mechanism is connected to the outer wall of the connecting sleeve. In this invention, an annular groove is fitted onto the end of the flame-retardant inner shell away from the triggering mechanism, and a sliding groove is formed on one side of the annular groove of the connecting sleeve. The connecting sleeve is connected to the bottom end of the top shell, and the blocking elements are movably inserted into the sliding groove. The blocking elements slide on the sliding groove via the triggering mechanism.

[0007] Preferably, the inner wall of the blocking member is adapted to the outer wall of the flame-retardant inner shell, and the blocking members are movably arranged in a ring at equal intervals on the outer wall of the flame-retardant inner shell. One end of the blocking member is movably inserted into the sliding groove, and the other end of the blocking member is connected to the triggering mechanism. The outer wall of the blocking member is adapted to the inner wall of the storage mechanism. This invention uses a plurality of blocking members movably arranged in a ring at equal intervals on the outer wall of the flame-retardant inner shell. The triggering mechanism drives the blocking members to slide on the outer wall of the flame-retardant inner shell, allowing the flame retardant in the storage mechanism to fill the outer wall of the flame-retardant inner shell.

[0008] Preferably, the triggering mechanism includes a central disk, a connecting hole, protrusions, a connecting shaft A, a curved connecting rod, and a connecting shaft B. The central disk is connected to the end of the flame-retardant inner shell away from the top shell. The connecting hole is formed on the central disk. A plurality of protrusions are connected to the outer wall of the central disk in an annular arrangement at equal intervals. A plurality of connecting shafts A are connected to the bottom ends of the protrusions. A plurality of curved connecting rods are rotatably connected to the ends of the connecting shafts A away from the protrusions. One end of the connecting shaft B is connected to the end of the blocking member away from the slide groove, and the other end of the connecting shaft B is connected to the end of the curved connecting rod away from the connecting shaft A. In this invention, a central disk is provided at the end of the flame-retardant inner shell away from the top shell, and a plurality of protrusions are arranged in an annular arrangement at equal intervals on the central disk. After the flame retardant is filled inside the storage mechanism, rotating the central disk causes the protrusions to rotate. The protrusions cause the connecting shaft A and the curved connecting rod to rotate. The curved connecting rod causes the connecting shaft B to slide within the slide groove.

[0009] Preferably, the storage mechanism includes an inlet tube and a shaped tube. The shaped tube is arranged between the two mounting plates, and the inlet tube is symmetrically connected to the end of the shaped tube. The inlet tube communicates with the interior of the shaped tube, and the end of the shaped tube away from the inlet tube is adapted to the outer wall of the blocking member. In this invention, a shaped tube is provided between the two mounting plates, and an inlet tube is connected to the end of the shaped tube. Flame retardant is filled through the inlet tube and then enters the shaped tube for storage. When the flame retardant needs to be replaced, the blocking member slides in a groove, causing the contact surface between the shaped tube and the blocking member to separate.

[0010] Preferably, the inlet tube is symmetrically connected to the end of the shaped tube in a circular shape, and an injection port is connected to the inlet tube. The inlet tube, the shaped tube, and the injection port are interconnected. In this invention, an inlet tube is provided at the end of the shaped tube, and an injection port is opened on the inlet tube. The flame retardant is injected through the injection port and enters the interior of the inlet tube.

[0011] Preferably, the shaped tube includes an injection tube, a curved tube, and a spray nozzle. The injection tube is connected to the inlet tube in a ring at equal intervals. The curved tube is connected to the end of the injection tube away from the inlet tube. The spray nozzle is located at the end of the curved tube away from the injection tube, and the spray nozzle is adapted to the outer wall size of the blocking component. In this invention, an injection tube is provided on the inlet tube, a curved tube is connected to the injection tube, and a spray nozzle is provided on the curved tube. The flame retardant is first injected through the injection nozzle and delivered into the inlet tube. It then enters the injection tube through the inlet tube, and finally enters the curved tube for storage. The wider channels at both ends of the curved tube allow the flame retardant to be stored there, and finally it is released through the spray nozzle.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention improves the structure of existing CFRP cable anti-corrosion and flame-retardant protection devices by installing a flame-retardant inner shell on the outside of the CFRP cable assembly, setting a blocking component on the outside of the flame-retardant inner shell, installing a storage mechanism on the outside of the blocking component, setting a triggering mechanism at the bottom of the storage mechanism, installing a torsion spring on the outside of the storage mechanism, and installing an anti-corrosion outer shell on the outside of the torsion spring. This allows flame retardant to be injected through the storage mechanism during routine maintenance, and then sprayed onto the flame-retardant inner shell through the triggering mechanism. This prevents the flame retardant from failing due to long-term exposure of the CFRP cable to the outdoor environment, extending its service life, preventing flame retardant failure, and improving the flame-retardant effect.

[0013] 2. This invention provides a central disk at the end of the flame-retardant inner shell away from the top shell. Several protrusions are arranged in a ring at equal intervals on the central disk. After the storage mechanism is filled with flame retardant, rotating the central disk causes the protrusions to rotate. The protrusions then rotate the connecting shaft A and the curved connecting rod. The curved connecting rod rotates the connecting shaft B, and the connecting shaft B causes the blocking component to slide within the groove. This releases the flame retardant introduced into the storage mechanism, resulting in new flame retardant on the outer wall of the flame-retardant inner shell, preventing the formation of flame retardant residue and improving its flame-retardant effect.

[0014] 3. This invention uses a shaped tube between two mounting discs, with an inlet tube connected to the end of the shaped tube. Flame retardant is filled through the inlet tube and stored in the shaped tube. When the flame retardant needs to be replaced, the blocking element slides in the groove, causing the contact surface between the shaped tube and the blocking element to separate, allowing the flame retardant stored in the shaped tube to spill out and cover the outer wall of the flame-retardant inner shell. Its excellent anti-corrosion and flame-retardant properties help reduce resource consumption and environmental pollution, meeting the requirements of sustainable development. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the anti-corrosion outer shell structure in this invention; Figure 3 This is a schematic diagram of the overall bottom structure of the present invention; Figure 4 This is a schematic cross-sectional view of the flame-retardant outer shell structure in this invention; Figure 5 This is a cross-sectional structural diagram of the CFRP cable assembly, flame-retardant inner shell, sliding mechanism, blocking component, triggering mechanism, mounting plate and storage mechanism in this invention. Figure 6 This is a cross-sectional view of the sliding mechanism, a schematic diagram of the mounting plate and the storage mechanism in this invention; Figure 7 This is a schematic diagram of the bottom structure of the sliding mechanism, blocking component, triggering mechanism, mounting plate and storage mechanism in this invention; Figure 8 This is a schematic diagram of the triggering mechanism structure in this invention; Figure 9 This is a bottom view of the flame-retardant inner shell, blocking component, triggering mechanism, mounting plate, and storage mechanism in this invention. In the diagram: 1. CFRP cable assembly; 2. Flame-retardant inner shell; 3. Connecting sliding mechanism; 4. Blocking component; 5. Triggering mechanism; 6. Mounting disc; 7. Storage mechanism; 8. Flame-retardant outer shell; 9. Torsion spring; 10. Corrosion-resistant outer shell; 301. Top shell; 302. Connecting sleeve; 303. Annular groove; 304. Sliding groove; 501, center plate; 502, connecting hole; 503, protrusion; 504, connecting shaft A; 505, curved connecting rod; 506, connecting shaft B; 701. Inlet tube; 702. Irregularly shaped tube; 7011, Injection Port; 7021, Injection pipe; 7022, Curved pipe; 7023, Spray nozzle. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: A CFRP cable corrosion and flame retardant protection device, see [link to example]. Figures 1 to 9 The system includes a CFRP cable assembly 1, a flame-retardant inner shell 2 fitted on the outside of the CFRP cable assembly 1, a sliding mechanism 3 fitted on the outside of the CFRP cable assembly 1 relative to the end of the flame-retardant inner shell 2, a blocking component 4 movably fitted on the outside of the flame-retardant inner shell 2, a triggering mechanism 5 at the end of the flame-retardant inner shell 2 away from the sliding mechanism 3, the triggering mechanism 5 being connected to the blocking component 4, mounting discs 6 at both ends of the flame-retardant inner shell 2 relative to the triggering mechanism 5, a storage mechanism 7 on the mounting discs 6, a flame-retardant outer shell 8 fitted on the outside of the mounting discs 6, a torsion spring 9 fitted on the outside of the flame-retardant outer shell 8, and a corrosion-resistant outer shell 10 fitted on the outside of the torsion spring 9. This invention improves the structure of existing CFRP cable anti-corrosion and flame-retardant protection devices by installing a flame-retardant inner shell 2 on the outside of the CFRP cable assembly 1, a blocking component 4 on the outside of the flame-retardant inner shell 2, a storage mechanism 7 on the outside of the blocking component 4, a triggering mechanism 5 at the bottom of the storage mechanism 7, a torsion spring 9 on the outside of the storage mechanism 7, and an anti-corrosion outer shell 10 on the outside of the torsion spring 9. During routine maintenance, flame retardant is injected through the storage mechanism 7, and then sprayed onto the flame-retardant inner shell 2 through the triggering mechanism 5. This prevents the flame retardant from failing due to long-term exposure of the CFRP cable to the outdoor environment, extending its service life, preventing flame retardant failure, and improving the flame-retardant effect.

[0017] Specifically, the sliding mechanism 3 includes a top shell 301, a connecting sleeve 302, an annular groove 303, and a sliding groove 304. The connecting sleeve 302 is connected to the bottom end of the top shell 301. The annular groove 303 is opened at the bottom end of the connecting sleeve 302. The sliding groove 304 is opened at the bottom end of the connecting sleeve 302 relative to the annular groove 303. The annular groove 303 is sleeved on the end of the flame-retardant inner shell 2 away from the triggering mechanism 5. Several blocking parts 4 are movably inserted into the sliding groove 304. The end of the torsion spring 9 away from the triggering mechanism 5 is connected to the outer wall of the connecting sleeve 302. This invention provides an annular groove 303 at the end of the flame-retardant inner shell 2 away from the triggering mechanism 5, and a sliding groove 304 on one side of the annular groove 303 of the connecting sleeve 302. The connecting sleeve 302 is connected to the bottom end of the top shell 301. The blocking member 4 is movably inserted into the sliding groove 304. The blocking member 4 slides on the sliding groove 304 through the triggering mechanism 5, causing the flame retardant in the storage mechanism 7 to spill out. After long-term use, the flame retardant in the flame-retardant inner shell 2 will evaporate and be refilled with flame retardant. The flame-retardant performance can extend its service life, reduce the frequency of maintenance and replacement, and thus reduce maintenance costs.

[0018] Furthermore, the inner wall of the blocking member 4 is adapted to the outer wall of the flame-retardant inner shell 2. The blocking members 4 are arranged in a ring with equal spacing on the outer wall of the flame-retardant inner shell 2. One end of the blocking member 4 is movably inserted into the sliding groove 304, and the other end of the blocking member 4 is connected to the triggering mechanism 5. The outer wall of the blocking member 4 is adapted to the inner wall of the storage mechanism 7. This invention, by arranging several blocking members 4 in a ring with equal spacing on the outer wall of the flame-retardant inner shell 2, and by using the triggering mechanism 5 to drive the blocking members 4 to slide on the outer wall of the flame-retardant inner shell 2, allows the flame retardant in the storage mechanism 7 to fill the outer wall of the flame-retardant inner shell 2, which is beneficial to improving the durability of the CFRP cable.

[0019] Furthermore, the triggering mechanism 5 includes a central disk 501, a connecting hole 502, a protrusion 503, a connecting shaft A504, a curved connecting rod 505, and a connecting shaft B506. The central disk 501 is connected to the end of the flame-retardant inner shell 2 away from the top shell 301. The connecting hole 502 is opened on the central disk 501. Several protrusions 503 are connected in a ring at equal intervals on the outer wall of the central disk 501. Several connecting shafts A504 are connected to the bottom ends of several protrusions 503. Several curved connecting rods 505 are rotatably connected to the ends of several connecting shafts A504 away from the protrusions 503. One end of the connecting shaft B506 is connected to the end of the blocking member 4 away from the slide groove 304, and the other end of the connecting shaft B506 is connected to the end of the curved connecting rod 505 away from the connecting shaft A504. This invention provides a central disk 501 at the end of the flame-retardant inner shell 2 away from the top shell 301. Several protrusions 503 are arranged in a ring at equal intervals on the central disk 501. After the storage mechanism 7 is filled with flame retardant, rotating the central disk 501 causes the protrusions 503 to rotate. The protrusions 503 then rotate the connecting shaft A 504 and the curved connecting rod 505. The curved connecting rod 505 drives the connecting shaft B 506, which in turn causes the blocking member 4 to slide within the groove 304. This releases the flame retardant introduced into the storage mechanism 7, resulting in new flame retardant on the outer wall of the flame-retardant inner shell 2, preventing flame retardant buildup and improving its flame-retardant effect.

[0020] It is worth noting that the storage mechanism 7 includes an inlet tube 701 and a shaped tube 702. The shaped tube 702 is arranged between the two mounting plates 6, and the inlet tube 701 is symmetrically connected to the end of the shaped tube 702. The inlet tube 701 and the shaped tube 702 are internally connected, and the end of the shaped tube 702 away from the inlet tube 701 is adapted to the outer wall of the blocking member 4. This invention, by setting the shaped tube 702 between the two mounting plates 6 and connecting the inlet tube 701 to the end of the shaped tube 702, allows flame retardant to be filled through the inlet tube 701. The flame retardant filled into the inlet tube 701 enters the shaped tube 702 for storage. When the flame retardant needs to be replaced, the blocking member 4 slides within the groove 304, causing the contact surface between the shaped tube 702 and the blocking member 4 to separate, allowing the flame retardant stored in the shaped tube 702 to spill out and cover the outer wall of the flame-retardant inner shell 2. Its excellent anti-corrosion and flame-retardant properties help reduce resource consumption and environmental pollution, meeting the requirements of sustainable development.

[0021] It is worth noting that the inlet tube 701 is symmetrically connected to the end of the shaped tube 702 in a circular shape, and an injection port 7011 is connected to the inlet tube 701. The inlet tube 701, the shaped tube 702, and the injection port 7011 are interconnected. This invention, by setting the inlet tube 701 at the end of the shaped tube 702 and opening the injection port 7011 on the inlet tube 701, allows the flame retardant to be injected through the injection port 7011 into the interior of the inlet tube 701. Because the injection port 7011, the inlet tube 701, and the interior of the shaped tube 702 are interconnected, after the flame retardant evaporates during later use, it can be injected again through the injection port 7011. This results in high maintenance efficiency, reduces the frequency of repairs and replacements, and lowers maintenance costs.

[0022] It is worth mentioning that the special-shaped tube 702 includes an injection tube 7021, a curved tube 7022, and a spray nozzle 7023. The injection tube 7021 is connected to the inlet tube 701 in a ring at equal intervals. The curved tube 7022 is connected to the end of the injection tube 7021 away from the inlet tube 701. The spray nozzle 7023 is opened at the end of the curved tube 7022 away from the injection tube 7021. The spray nozzle 7023 is adapted to the outer wall size of the blocking component 4. This invention improves maintenance efficiency and achieves better flame retardant effects by setting an injection pipe 7021 on the inlet pipe 701, connecting a curved pipe 7022 to the injection pipe 7021, and opening a spray port 7023 on the curved pipe 7022. The flame retardant is first injected through the injection port 7011 and transported into the inlet pipe 701. It then enters the injection pipe 7021 through the inlet pipe 701, and then enters the curved pipe 7022 for storage. The wider channels at both ends of the curved pipe 7022 allow the flame retardant to be stored there. Finally, it is released through the spray port 7023. This invention significantly improves the safety, durability, and environmental adaptability of the flame retardant in practical applications.

[0023] Working Principle: In use, this invention firstly involves a flame-retardant inner shell 2 fitted over the CFRP cable assembly 1. A blocking element 4 is installed outside the flame-retardant inner shell 2, and a storage mechanism 7 is fitted over the blocking element 4. A triggering mechanism 5 is installed at the bottom of the storage mechanism 7. A torsion spring 9 is fitted over the storage mechanism 7, and a corrosion-resistant outer shell 10 is fitted over the torsion spring 9. During routine maintenance, the flame retardant is injected through the injection port 7011 and delivered to the inlet pipe 701. From there, it enters the injection pipe 7021, and then the curved pipe 7022 for storage. The curved pipe 702... The wider channels at both ends allow the flame retardant to be stored and released through the spray nozzle 7023. A central disk 501 is provided at the end of the flame-retardant inner shell 2 away from the top shell 301. Several protrusions 503 are arranged in a ring at equal intervals on the central disk 501. After the flame retardant is filled into the storage mechanism 7, rotating the central disk 501 causes the protrusions 503 to rotate. The protrusions 503 cause the connecting shaft A 504 and the curved connecting rod 505 to rotate. The curved connecting rod 505 causes the connecting shaft B 506 to rotate. The connecting shaft B 506 causes the blocking part 4 to slide in the groove 304, so that the flame retardant introduced into the storage mechanism 7 is released.

[0024] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A CFRP cable corrosion and flame retardant protection device, characterized in that, The device includes a CFRP cable assembly (1), a flame-retardant inner shell (2) fitted on the outside of the CFRP cable assembly (1), a sliding mechanism (3) fitted on the outside of the CFRP cable assembly (1) relative to the end of the flame-retardant inner shell (2), a blocking component (4) movably fitted on the outside of the flame-retardant inner shell (2), a triggering mechanism (5) provided at the end of the flame-retardant inner shell (2) away from the sliding mechanism (3), the triggering mechanism (5) connected to the blocking component (4), a mounting plate (6) provided at both ends of the flame-retardant inner shell (2) relative to the triggering mechanism (5), a storage mechanism (7) provided on the mounting plate (6), a flame-retardant outer shell (8) fitted on the outside of the mounting plate (6), a torsion spring (9) fitted on the outside of the flame-retardant outer shell (8), and an anti-corrosion outer shell (10) fitted on the outside of the torsion spring (9). The triggering mechanism (5) includes a central disk (501), a connecting hole (502), a protrusion (503), a connecting shaft A (504), a curved connecting rod (505), and a connecting shaft B (506). The central disk (501) is connected to the end of the flame-retardant inner shell (2) away from the top shell (301). The connecting hole (502) is opened on the central disk (501). A plurality of the protrusions (503) are connected in a ring at equal intervals to the outer wall of the central disk (501). A plurality of connecting shafts A (504) are connected to the bottom ends of a plurality of protrusions (503), a plurality of curved connecting rods (505) are rotatably connected to the ends of the plurality of connecting shafts A (504) away from the protrusions (503), one end of the connecting shaft B (506) is connected to the end of the blocking member (4) away from the slide groove (304), and the other end of the connecting shaft B (506) is connected to the end of the curved connecting rod (505) away from the connecting shaft A (504); The storage mechanism (7) includes an inlet tube (701) and a special-shaped tube (702). The special-shaped tube (702) includes an injection tube (7021), a curved tube (7022), and a spray nozzle (7023). The injection tube (7021) is connected to the inlet tube (701) in a ring at equal intervals. The curved tube (7022) is connected to the end of the injection tube (7021) away from the inlet tube (701). The spray nozzle (7023) is opened at the end of the curved tube (7022) away from the injection tube (7021). The spray nozzle (7023) is adapted to the outer wall size of the blocking member (4).

2. The CFRP cable anti-corrosion and flame-retardant protection device as described in claim 1, characterized in that, The sliding mechanism (3) includes a top shell (301), a connecting sleeve (302), an annular groove (303), and a sliding groove (304). The connecting sleeve (302) is connected to the bottom end of the top shell (301). The annular groove (303) is opened at the bottom end of the connecting sleeve (302). The sliding groove (304) is opened at the bottom end of the connecting sleeve (302) relative to the annular groove (303). The annular groove (303) is sleeved on the flame-retardant inner shell (2) at the end away from the triggering mechanism (5). A plurality of blocking parts (4) are movably inserted into the sliding groove (304). The torsion spring (9) at the end away from the triggering mechanism (5) is connected to the outer wall of the connecting sleeve (302).

3. The CFRP cable anti-corrosion and flame-retardant protection device as described in claim 2, characterized in that, The inner wall of the blocking member (4) is adapted to the outer wall of the flame-retardant inner shell (2). The blocking member (4) is arranged in a ring with equal spacing on the outer wall of the flame-retardant inner shell (2). One end of the blocking member (4) is movably inserted into the slide groove (304), and the other end of the blocking member (4) is connected to the triggering mechanism (5). The outer wall of the blocking member (4) is adapted to the inner wall of the storage mechanism (7).

4. The CFRP cable anti-corrosion and flame-retardant protection device as described in claim 3, characterized in that, The shaped tube (702) is arranged between the two mounting discs (6), the inlet tube (701) is symmetrically connected to the end of the shaped tube (702), the inlet tube (701) communicates with the inside of the shaped tube (702), and the end of the shaped tube (702) away from the inlet tube (701) is adapted to the outer wall of the blocking member (4).

5. The CFRP cable anti-corrosion and flame-retardant protection device as described in claim 4, characterized in that, The inlet tube (701) is symmetrically connected to the end of the shaped tube (702) in a circular shape. An injection port (7011) is connected to the inlet tube (701). The inlet tube (701), the shaped tube (702) and the injection port (7011) are interconnected.

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