CN115774307A

CN115774307A - Continuous ignition separation prevention device and method for optical cable protection

Info

Publication number: CN115774307A
Application number: CN202211458221.4A
Authority: CN
Inventors: 曹伟; 苏文晓
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-10

Abstract

The invention relates to a continuous ignition separation prevention device for optical cable protection and a protection method. According to the protection device, the first lead is ignited through burning flame, the first lead quickly ignites the filling powder in the container, as the container is in a sealed state, shock waves are generated at the moment of ignition of the filling powder, the shock waves push the blade to quickly move downwards through the sliding rod to cut off the optical cable, the arc-shaped part moves downwards along with the blade to cut off and separate the cut optical cable, and when the optical cable burns, the blade in the protection device can quickly move downwards to cut off the optical cable instantly, and the optical cable is separated while being cut off, so that the protection treatment can be effectively carried out on the optical cable.

Description

Continuous ignition separation prevention device and method for optical cable protection

Technical Field

The invention relates to the technical field of optical cable protection, in particular to a continuous ignition separation prevention protection device and a continuous ignition separation prevention protection method for optical cable protection.

Background

The optical cable is manufactured for meeting the performance specification of optics, machinery or environment, and is a communication cable component which uses one or more optical fibers arranged in a coating sheath as transmission media and can be used singly or in groups. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable is formed by subjecting an optical fiber to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.

The Chinese patent with publication number CN112965191A discloses a continuous ignition preventing and separating protection device for protecting an optical cable, which comprises an optical cable body; the cutting assembly is characterized in that an annular empty groove is formed in the inner cavity of the front annular shell, and a cutting knife is arranged at the top of the inner cavity of the annular empty groove; the air distribution assembly comprises a rear annular shell which is fixedly connected with one end of the front annular shell and sleeved outside the optical cable body; according to the invention, the protective device is arranged outside the optical cable in a certain interval, when the optical cable is exploded accidentally or burns due to external factors, the cutting knife is stressed quickly and cut downwards under the action of the limiting spring to cut the optical cable into two sections, the stay wire is cut off when the cutting knife falls, the air distribution disc falls into the rear annular shell and is communicated with the annular air bag, pressurized air overflows, the effect of separating fire source foreign matters is achieved, the problem of re-burning is avoided, the problem that the damage degree of the optical cable is increased due to continuous spreading of the optical cable due to burning is solved, and the problem that the use cost is increased due to accidental situations is reduced.

The above technology has the following disadvantages:

1. because the optical cable mainly comprises inside sinle silk and outside line cover, the line cover plays the effect of protection sinle silk, and above-mentioned protector only exists the problem that can not cut off the optical cable (the tensile force of spring is not enough, leads to the explosive force in the twinkling of an eye of dividing the cutter not enough) through the operation mode that the spring pulling divides the cutter to move down in the in-service use process, can not play the effect of protection when the optical cable burns.

2. Even if the optical cable is cut off in the process of cutting the optical cable by the protective device, the optical cable is fixed with the protective device, and after the optical cable is cut off by falling of the cutting knife, the cut optical cable is not separated, so that two cut optical cables are still embedded into the protective device, and the optical cable on fire still ignites the other optical cable, so that the continuous ignition prevention effect cannot be realized.

Based on the above, the invention provides a continuous ignition partition prevention device for optical cable protection and a protection method thereof, which solve the above problems.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a continuous ignition prevention separation protection device and a continuous ignition prevention separation protection method for optical cable protection.

The technical scheme adopted by the invention is as follows: comprises a clamping part and a blade, wherein the clamping part is used for being sleeved on the outer side of the optical cable, and the top of the clamping part is provided with the blade

The sliding rod is fixedly arranged at the top of the blade;

the arc-shaped piece is integrally arranged at the joint of the sliding rod and the blade;

the trigger mechanism is arranged at the top of the clamping piece and comprises a sleeve and a container, the container is communicated with the top end of the sleeve and is fixed at the top of the clamping piece, the sliding rod is arranged inside the sleeve in a sliding mode, the container is internally provided with filling powder, the bottom of the filling powder is provided with a first lead, and the first lead is embedded into the outer peripheral surface of the sleeve and extends into the clamping piece;

flame generated by the optical cable burns to ignite the first lead wire, the first lead wire detonates the filling powder, the pressure in the container is increased instantly, the blade is pushed by the sliding rod to move downwards to cut off the optical cable, and the arc-shaped piece is embedded into the notch to push the optical cable to separate.

In a preferred embodiment, the first lead rapidly ignites the filling powder in the container, the container is in a sealed state, the filling powder generates a shock wave at the moment of ignition, the shock wave pushes the blade to rapidly move downwards through the sliding rod to cut off the optical cable, and the arc-shaped part moves downwards along with the blade to cut off and separate the cut optical cable.

In a preferred embodiment, the clamping member includes a first half jacket and a second half jacket, the first half jacket and the second half jacket are sleeved on the outer side of the optical cable, the first half jacket and the second half jacket are fixed by bolts, a knife box is fixedly arranged on the top of the second half jacket, the sleeve penetrates through the knife box, the blades are embedded in the knife box, and the knife box is used for placing the blades.

In a preferred embodiment, a first gasket is arranged on the inner side of one end of the first half jacket in a sliding manner, a second gasket is arranged on the inner side of one end of the second half jacket in a sliding manner, a pushing mechanism is further arranged on the top of the inner side of the second half jacket, and the pushing mechanism is abutted against the second half jacket.

In a preferred embodiment, the pushing mechanism includes an elastic member, a circular ring, a protruding rib, and a connecting rope, the circular ring and the protruding rib are both fixedly disposed at the top of the inner cavity of the second half jacket, two ends of the elastic member are respectively fixedly connected with the circular ring and the second half jacket, two ends of the connecting rope are respectively fixedly connected with the second half jacket and the protruding rib, a middle section of the connecting rope corresponds to the position of the blade, and the connecting rope sequentially passes through the elastic member and the circular ring.

In a preferred embodiment, the connecting rope and the elastic element enable the second gasket to be positioned at the inner side of one end of the second half jacket, the first gasket is placed in the first half jacket, the optical cable is placed at the top of the first half jacket, the second half jacket is fixed at the top of the first half jacket through a bolt, and the first gasket and the second gasket are matched to clamp the optical cable;

the blade moves downwards to cut off the connecting rope, the second gasket is not limited, and after the blade cuts off the optical cable and separates the optical cable, the elastic piece pushes the cut optical cable to separate through the second gasket.

In a preferred embodiment, the top end of the sliding rod is further provided with a cotton thread, the sliding rod is connected with the first lead through the cotton thread, the first lead burns to the container and blows the cotton thread, and the side of the sleeve far away from the first lead is further provided with a second lead.

In a preferred embodiment, the first lead and the second lead are covered with a waterproof film on the outer side, and the waterproof film is used for waterproofing the first lead and the second lead.

The invention also provides a protection method for preventing continuous ignition separation for protecting the optical cable, which comprises the following steps:

s: sleeving the first half jacket and the second half jacket on the outer side of the optical cable, fixing the first half jacket and the second half jacket by using bolts, and clamping the optical cable by matching the first gasket and the second gasket;

s: when the optical cable is burnt, the first lead or the second lead is ignited, the first lead or the second lead detonates the filling powder, shock waves are generated at the moment of ignition of the filling powder, the shock waves push the blade to move downwards rapidly through the sliding rod, and the blade cuts off the optical cable after cutting off the connecting rope;

s: when the blade moves downwards, the arc-shaped part is driven to move downwards together, and when the blade cuts off the optical cable, the arc-shaped part is embedded into a gap generated by cutting off the optical cable, so that the cut-off optical cable is pushed and separated.

In a preferred embodiment, the protection method further comprises the steps of:

s: after the connecting rope is cut off, the elastic piece pushes the second gasket, the second gasket drives the optical cable to move out of a part of the clamping piece through friction force, and a gap between the cut optical cables is enlarged;

s: the connecting rope moves along with the second gasket, so that a plunger at the top of the clamping piece is pulled, and after the plunger is opened, the flame retardant in the sleeve at the top of the clamping piece flows into a gap between the optical cables to resist flame.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the optical cable protection device, the clamping piece is fixedly sleeved on the outer side of the optical cable, the plurality of protection devices can be arranged on the optical cable at equal intervals according to the length of the optical cable, when the optical cable burns in the using process, the burning flame ignites the first lead wire, the first lead wire quickly ignites filling powder in the container, because the container is in a sealed state, shock waves are generated at the moment when the filling powder ignites, the shock waves push the blade to quickly move downwards through the sliding rod to cut off the optical cable, the arc-shaped piece moves downwards along with the blade to cut off the cut-off optical cable, the internal blade of the protection device can quickly move downwards to cut off the optical cable instantly when the optical cable burns, the optical cable is separated while the optical cable is cut off, and the protection treatment is effectively carried out on the optical cable.

2. When the blade moves downwards to cut off the optical cable, the blade cuts off the connecting rope firstly, the second gasket is not limited at the moment, and after the blade cuts off the optical cable completely and separates the optical cable, the elastic part pushes the cut optical cable to separate through the second gasket, so that the use safety of the optical cable can be further guaranteed.

3. According to the invention, when the optical cable is cut off rapidly, the gap at the cut-off position of the optical cable is effectively enlarged, and the flame retardant is filled in the gap for flame retarding, so that the flame retardant can not only prevent the optical cable from being ignited continuously, but also perform fire extinguishing treatment under the condition of smaller fire intensity, and the practicability is better.

Drawings

Fig. 1 is a diagram illustrating the explosion effect of the present invention.

Fig. 2 is a longitudinal sectional view of the present invention.

Fig. 3 is a first usage state diagram of the present invention.

Fig. 4 is a second usage state diagram of the present invention.

Fig. 5 is a third usage state diagram of the present invention.

Fig. 6 is a schematic structural diagram of the pushing mechanism of the present invention.

Fig. 7 is a schematic view of the overall structure of the present invention.

Illustration of the drawings:

1. a clamping member; 11. a first half jacket; 111. a first spacer; 12. a second half jacket; 121. a sleeve; 122. a container; 123. filling gunpowder; 1231. a first lead; 1232. a second lead; 124. a second gasket; 125. a knife box; 2. a blade; 3. a slide bar; 31. an arcuate member; 4. a pushing mechanism; 41. an elastic member; 42. a circular ring; 43. a rib is protruded; 44. and (7) connecting a rope.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

Referring to fig. 1 and 2, the continuous ignition partition preventing device for protecting an optical cable according to the present embodiment includes a clamping member 1, the clamping member 1 is configured to be sleeved outside an optical cable, a blade 2 is disposed on a top of the clamping member 1, unlike the prior art, a sliding rod 3 is fixedly disposed on a top of the blade 2, an arc-shaped member 31 is integrally disposed at a connection portion of the sliding rod 3 and the blade 2, a trigger mechanism is further disposed on a top of the clamping member 1, the trigger mechanism includes a sleeve 121 and a container 122, the container 122 is disposed at a top end of the sleeve 121 in a communicating manner, the sleeve 121 is fixed on a top of the clamping member 1, the sliding rod 3 is slidably disposed inside the sleeve 121, a powder charge 123 is disposed inside the container 122, a first lead 1231 is disposed at a bottom of the powder charge 123, the first lead 1231 is embedded in an outer circumferential surface of the sleeve 121 and extends into the clamping member 1, a flame generated by burning the optical cable ignites the first lead 1231, the first lead 1231 detonates the powder charge 123, an internal pressure of the container 122 increases instantly, and pushes the blade 2 downwards to separate the optical cable from the cut off the cut-off optical cable.

Referring to fig. 3, 4 and 5, the clamping member 1 is fixed and sleeved on the outer side of the optical cable manually, a plurality of protective devices can be arranged on the optical cable at equal intervals according to the length of the optical cable, when the optical cable burns in the using process, the burning flame ignites the first lead 1231, the first lead 1231 quickly ignites the filling powder 123 in the container 122, because the container 122 is in a sealed state, the filling powder 123 instantly ignites to generate a shock wave, the shock wave pushes the blade 2 to rapidly move downwards through the sliding rod 3 to cut off the optical cable, and the arc-shaped member 31 moves downwards along with the sliding rod to cut off and separate the cut-off optical cable.

Since the movable parts such as the blade 2 and the sliding bar 3 are arranged on the top of the holding member 1 (in actual use, the blade 2 and the sliding bar 3 may be positioned on two sides or other positions due to the rotation of the optical cable).

Thus, the blade 2 and the sliding rod 3 may slide down under the action of gravity during transportation, which may cause the blade 2 to have no acceleration and may fail to cut the optical cable at the later detonation.

Therefore, in order to ensure that the position of the blade 2 and the slide rod 3 is fixed, and can be moved down when the charge 123 is ignited.

The top end of the sliding rod 3 is further provided with a cotton thread, the sliding rod 3 is connected with the first lead 1231 through the cotton thread, the first lead 1231 burns to the container 122 and simultaneously blows the cotton thread, the sliding rod 3 can be pushed to move downwards after the filling gunpowder 123 is detonated, and in the transportation process, the cotton thread can also effectively guarantee that the positions of the blade 2 and the sliding rod 3 are unchanged.

In practice, the shielding device is usually arranged in the middle area of the optical cable, and considering that the burning of the optical cable may occur at the right or left end of the clamping member 1, we also provide a second lead 1232 at the side of the sleeve 121 far from the first lead 1231, so that when the optical cable at the left end of the clamping member 1 burns, the second lead 1232 will be ignited and also serve the purpose of cutting the optical cable.

Meanwhile, when the second lead 1232 is used to ignite the gunpowder 123, the cotton thread will not be burnt, so the toughness of the cotton thread in this embodiment can be properly reduced, as long as the purpose of keeping the position of the sliding rod 3 inconvenient can be achieved.

In order to prevent the first lead 1231 and the second lead 1232 from being disabled due to damp or water, a waterproof film is further wrapped on the outer sides of the first lead 1231 and the second lead 1232, the waterproof film can effectively perform waterproof treatment on the first lead 1231 and the second lead 1232, and the waterproof film can be melted by flame when the optical cable is burnt.

The clamping piece 1 comprises a first half clamping sleeve 11 and a second half clamping sleeve 12, the first half clamping sleeve 11 and the second half clamping sleeve 12 are detachably connected through bolts, when the clamping piece is used, the first half clamping sleeve 11 and the second half clamping sleeve 12 are sleeved on the outer side of an optical cable, and then the first half clamping sleeve 11 and the second half clamping sleeve 12 are fixed through bolts.

Since optical cables need to be placed inside the first half jacket 11 and the second half jacket 12, the blades 2 are located outside the top of the second half jacket 12, in order to effectively protect the blades 2, a knife box 125 is fixedly arranged on the top of the second half jacket 12, the sleeve 121 penetrates through the knife box 125, the blades 2 are embedded in the knife box 125, and the knife box 125 effectively protects the blades 2.

Because the impact force generated when the filling powder 123 explodes is diffused all around, in order to ensure the normal use of the protection device (to avoid the direct blast damage of the container 122), the container 122 in the embodiment is made of an aluminum alloy material, so that the impact resistance is strong, and the normal use of the protection device is ensured.

Example 2

Therefore, in order to ensure that the position of the blade 2 and the slide bar 3 is not moved and can be moved down when the explosive charge 123 is detonated.

In order to prevent the first lead 1231 and the second lead 1232 from being disabled due to damp or water, a waterproof film is further wrapped outside the first lead 1231 and the second lead 1232, the waterproof film can effectively perform waterproof treatment on the first lead 1231 and the second lead 1232, and when the optical cable is burnt, the waterproof film can be melted by flame.

Referring to fig. 3, a first gasket 111 is slidably disposed on an inner side of one end of the first half jacket 11, a second gasket 124 is slidably disposed on an inner side of one end of the second half jacket 12, a pushing mechanism 4 is further disposed on a top of an inner side of the second half jacket 12, and the pushing mechanism 4 abuts against the second half jacket 12.

Referring to fig. 6, the pushing mechanism 4 includes an elastic member 41, a circular ring 42, a protruding rib 43, and a connecting rope 44, the circular ring 42 and the protruding rib 43 are both fixedly disposed at the top of the inner cavity of the second half-jacket 12, two ends of the elastic member 41 are respectively fixedly connected to the circular ring 42 and the second half-jacket 12, two ends of the connecting rope 44 are respectively fixedly connected to the second half-jacket 12 and the protruding rib 43, a middle section of the connecting rope 44 corresponds to the position of the blade 2, and the connecting rope 44 sequentially passes through the elastic member 41 and the circular ring 42.

The second gasket 124 is located at the inner side of one end of the second half jacket 12 under the action of the connecting rope 44 and the elastic member 41 in a normal state, when clamping the optical cable, a worker puts the first gasket 111 into the first half jacket 11 first, puts the optical cable at the top of the first half jacket 11, and finally fixes the second half jacket 12 at the top of the first half jacket 11 through bolts, and the first gasket 111 and the second gasket 124 are matched to clamp the optical cable, so that the effect of fixing the clamping member 1 is achieved, and the optical cable is effectively protected.

When the optical cable burns, the protection device starts, and the blade 2 moves down to cut off the optical cable, the blade 2 firstly cuts off the connecting rope 44, at this time, the second gasket 124 is not limited, and after the blade 2 completely cuts off the optical cable and separates the optical cable, the elastic part 41 pushes the cut optical cable to separate through the second gasket 124, so that the use safety of the optical cable can be further ensured.

Example 3

The protection method for preventing the continuous ignition separation for protecting the optical cable comprises the following steps:

(1) The first half jacket 11 and the second half jacket 12 are sleeved on the outer side of the optical cable, the first half jacket 11 and the second half jacket 12 are fixed by using bolts, and the first gasket 111 and the second gasket 124 are matched to clamp the optical cable.

(2) When the optical cable is burnt, the first lead 1231 or the second lead 1232 is ignited, the first lead 1231 or the second lead 1232 detonates the filling powder 123, the filling powder 123 generates shock waves at the moment of ignition, the shock waves push the blade 2 to move downwards rapidly through the sliding rod 3, and the blade 2 cuts off the connecting rope 44 to cut off the optical cable.

(3) When the blade 2 moves downwards, the arc-shaped part 31 is driven to move downwards together, and when the blade 2 cuts the optical cable, the arc-shaped part 31 is embedded into a gap generated by cutting the optical cable, so that the cut optical cable is pushed and separated.

(4) After the connecting rope 44 is cut off, the elastic member 41 pushes the second gasket 124, and the second gasket 124 drives the optical cable to move out of a part of the clamping member 1 by friction force, so that the gap between the cut optical cables is increased.

(5) Tether 44 follows second pad 124 and pulls the plunger at the top of clamp 1, which opens and the fire retardant in the top sleeve of clamp 1 flows into the space between the cables to retard fire.

According to the protection method, the gap at the cut-off position of the optical cable is effectively enlarged while the optical cable is cut off rapidly, the flame retardant is filled in the gap for flame retardance, the flame retardant can avoid continuous ignition of the optical cable, and can perform fire extinguishing treatment under the condition of small fire intensity, so that the practicability is better.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an optical cable protection is with preventing separate protector that ignites in succession, includes holder (1), holder (1) are used for the cover to establish in the outside of optical cable, and the top of holder (1) is provided with blade (2), its characterized in that: also comprises

The sliding rod (3) is fixedly arranged at the top of the blade (2);

the arc-shaped piece (31) is integrally arranged at the joint of the sliding rod (3) and the blade (2);

the trigger mechanism is arranged at the top of the clamping piece (1) and comprises a sleeve (121) and a container (122), the container (122) is communicated with the top end of the sleeve (121), the sleeve (121) is fixed at the top of the clamping piece (1), the sliding rod (3) is arranged inside the sleeve (121) in a sliding mode, filling powder (123) is arranged inside the container (122), a first lead (1231) is arranged at the bottom of the filling powder (123), and the first lead (1231) is embedded in the outer peripheral surface of the sleeve (121) and extends into the clamping piece (1);

flame generated by the optical cable combustion ignites the first lead (1231), the first lead (1231) detonates the filling powder (123), the internal pressure of the container (122) is increased instantly, the blade (2) is pushed by the sliding rod (3) to move downwards to cut off the optical cable, and the arc-shaped piece (31) is embedded into the notch to push the optical cable to separate.

2. A protective device for preventing continuous ignition separation for optical cable protection as claimed in claim 1, wherein: the first lead (1231) quickly ignites the filling powder (123) in the container (122), the container (122) is in a sealed state, the filling powder (123) generates shock waves at the moment of ignition, the shock waves push the blade (2) to quickly move downwards through the sliding rod (3) to cut off the optical cable, and the arc-shaped piece (31) moves downwards along with the sliding rod to cut off the cut-off optical cable.

3. A continuous ignition partition preventing device for optical cable protection as claimed in claim 2, wherein: the clamping piece (1) comprises a first half clamping sleeve (11) and a second half clamping sleeve (12), the first half clamping sleeve (11) and the second half clamping sleeve (12) are sleeved on the outer side of the optical cable, the first half clamping sleeve (11) and the second half clamping sleeve (12) are fixed through bolts, a knife box (125) is fixedly arranged at the top of the second half clamping sleeve (12), the sleeve (121) penetrates through the knife box (125), the blade (2) is embedded into the knife box (125), and the knife box (125) is used for placing the blade (2).

4. A continuous ignition partition preventing device for protecting optical fiber cables as claimed in claim 3, wherein: the inner side of one end of the first half jacket (11) is provided with a first gasket (111) in a sliding mode, the inner side of one end of the second half jacket (12) is provided with a second gasket (124) in a sliding mode, the top of the inner side of the second half jacket (12) is further provided with a pushing mechanism (4), and the pushing mechanism (4) is abutted to the second half jacket (12).

5. A device for protecting an optical cable against a continuous ignition partition as claimed in claim 4, wherein: push mechanism (4) include elastic component (41), ring (42), protruding muscle (43) and even rope (44), and ring (42) and protruding muscle (43) all fixed the setting at the inner chamber top that half jacket (12) of second, the both ends of elastic component (41) respectively with ring (42) and half jacket (12) fixed connection of second, the both ends of even rope (44) respectively with half jacket (12) of second and protruding muscle (43) fixed connection, and the middle section that links rope (44) is corresponding with blade (2) position, even rope (44) pass elastic component (41) and ring (42) in proper order.

6. A continuous ignition partition preventing device for protecting optical fiber cables as claimed in claim 5, wherein: the connecting rope (44) and the elastic piece (41) enable the second gasket (124) to be located on the inner side of one end of the second half jacket (12), the first gasket (111) is placed into the first half jacket (11), the optical cable is placed at the top of the first half jacket (11), the second half jacket (12) is fixed at the top of the first half jacket (11) through bolts, and the first gasket (111) and the second gasket (124) are matched to clamp the optical cable;

the blade (2) moves downwards to cut off the connecting rope (44), the second gasket (124) is not limited, and after the blade (2) cuts off the optical cable and separates the optical cable, the elastic piece (41) pushes the cut optical cable to separate through the second gasket (124).

7. A continuous ignition partition preventing device for protecting optical fiber cables as claimed in claim 6, wherein: the top of slide bar (3) still is provided with a cotton thread, and slide bar (3) pass through the cotton thread with first lead wire (1231) and are connected, and first lead wire (1231) can blow the cotton thread when burning to container (122) department, one side that first lead wire (1231) was kept away from in sleeve pipe (121) still is provided with second lead wire (1232).

8. A protective device for preventing continuous ignition separation for optical cable protection as claimed in claim 7, wherein: the outer sides of the first lead (1231) and the second lead (1232) are wrapped with a waterproof film, and the waterproof film is used for preventing water for the first lead (1231) and the second lead (1232).

9. A method for protecting an optical cable from a continuous ignition resistant partition, which is implemented by a protection device for an optical cable from a continuous ignition resistant partition according to any one of claims 1 to 8, characterized in that: the protection method comprises the following steps:

s1: sleeving a first half jacket (11) and a second half jacket (12) on the outer side of the optical cable, fixing the first half jacket (11) and the second half jacket (12) by using bolts, and clamping the optical cable by matching a first gasket (111) and a second gasket (124);

s2: when the optical cable is burnt, the first lead (1231) or the second lead (1232) is ignited, the first lead (1231) or the second lead (1232) detonates the filling powder (123), shock waves are generated at the moment of ignition of the filling powder (123), the shock waves push the blade (2) to move downwards rapidly through the sliding rod (3), and the optical cable is cut off after the connecting rope (44) is cut off by the blade (2);

s3: when the blade (2) moves downwards, the arc-shaped piece (31) is driven to move downwards together, and when the blade (2) cuts off the optical cable, the arc-shaped piece (31) is embedded into a gap generated by cutting off the optical cable, so that the cut-off optical cable is pushed and separated.

10. A method of protecting an optical fiber cable from a continuous ignition resistant partition as claimed in claim 9, wherein: the protection method further comprises the following steps:

s4: after the connecting rope (44) is cut off, the elastic piece (41) pushes the second gasket (124), the second gasket (124) drives the optical cable to move out of one part of the clamping piece (1) through friction force, and the gap between the cut optical cables is enlarged;

s5: the connecting rope (44) moves along with the second gasket (124) so as to pull a plunger on the top of the clamping piece (1), and after the plunger is opened, the flame retardant in the sleeve on the top of the clamping piece (1) flows into a gap between the optical cables for flame retarding.