CN209560176U - A kind of lightning protection device and optical cable - Google Patents

Abstract

The utility model relates to lightning-protection engineering field, a kind of lightning protection device and optical cable are disclosed.Wherein, lightning protection device is used for the lightning protection of optical cable; two sections of metal armour pipes mutually disconnected are arranged on the optical fiber of optical cable; lightning protection device includes the lightning protection pipe being made of insulating material; lightning protection pipe has the first pore, and optical fiber is equipped in the first pore, and the first pore is set between two sections of metal armour pipes; one end of first pore tube wall is connected to one section of metal armour pipe, and the other end of the first pore tube wall is connected to another section of metal armour pipe.Wherein, optical cable includes above-mentioned lightning protection device, and two sections of metal armour pipes of optical cable are respectively arranged on the first pore both ends and are connected on the first pore tube wall.In the utility model; if lightning stroke is beaten on optical cable; because the impedance for the first pore tube wall being located between two sections of metal armour pipes is higher, the gap between metal armour pipe that thunder and lightning breakdown can be prevented to be disconnected, the tube wall of the first pore can protect the optical fiber being exposed between two sections of metal armour pipes again.

Description

A kind of lightning protection device and optical cable

Technical field

The utility model relates to lightning-protection engineering field more particularly to a kind of lightning protection devices and optical cable.

Background technique

As global mobile terminal usage amount is continuously increased, public mobile communication base station both domestic and external large area, which is sprawled, is built If.Signal transmission line of the dragging optical cable component as public mobile communication base station, is often erected at high-altitude.Wherein, base station Antenna is generally built in building roof, spacious field or advertisement bar equal-height position, and dragging optical cable component connect and leads to antenna for base station It crosses antenna for base station transmitting and receives signal.

Generally, dragging optical cable includes optical fiber and the metal armour pipe that is set in outside optical fiber.In the season that summer thunderstorm takes place frequently, Dragging optical cable usually will receive lightning stroke, and the generated electric current that is struck by lightning can enter base station along metal armour pipe, to make to base station At destructive destruction.

Currently, common schemes of prevention against lightning is choked flow scheme.In choked flow scheme, by cutting off the metal armour being set in outside optical fiber Pipe is to disconnect the generated electric current that is struck by lightning, to avoid the breaking-up of base station.But voltage caused by thunder and lightning is high, if lightning stroke is complete Portion is beaten on dragging optical cable, it is more likely that punctures the gap between the metal armour pipe being disconnected, to form access.If by breaking The gap between metal armour pipe opened is excessive, and will affect metal armour pipe to the defencive function of optical fiber, causes light in dragging optical cable Fine damage.

Utility model content

Based on the above, the purpose of this utility model is to provide a kind of lightning protection device and optical cables, can be avoided Yin La Distance light cable is struck by lightning and is caused damages, and does not influence the protection to optical fibre in optical cable.

In order to achieve the above object, the utility model uses following technical scheme:

A kind of lightning protection device is arranged with two sections and mutually disconnects for the lightning protection of optical cable on the optical fiber of the optical cable Metal armour pipe, the lightning protection device include the lightning protection pipe being made of insulating material, and the lightning protection pipe has the first pipe Hole, for wearing the optical fiber, the tube wall of first pore is configured as being located in two sections of metals first pore Between armour pipe, and one end of the first pore tube wall is connected to one section of metal armour pipe, the first pore tube wall it is another One end is connected to another section of metal armour pipe.

Preferably, the lightning protection device further include ground line, it is described ground line be set to the lightning protection pipe on and with institute State the electrical connection of metal armour pipe.

Preferably, the lightning protection pipe also has two section of second pore, and two sections of second pores are respectively arranged on described The both ends of first pore, are inserted with one section of metal armour pipe in one section of second pore, in another section of second pore It is inserted with another section of metal armour pipe.

Preferably, the ground line is inserted in the ground string holes on the second pore tube wall, the pipe of second pore Wall is equipped with the ground connection threaded hole being connected with second pore and described ground string holes, is bolted with and connects in the ground connection threaded hole Floor screw, the earthing screw are electrically connected with the metal armour pipe and the ground line.

Preferably, the tube wall of second pore is equipped with the tightening threaded hole being connected with described ground string holes, described tight Determine to be bolted with the holding screw for fixing the ground line in threaded hole.

Preferably, the relatively described tightening threaded hole, the ground connection threaded hole are arranged close to first pore.

Preferably, the lightning protection pipe split settings, are divided into the lightning protection pipe first mutually fastened and lightning protection is protected Pillar second, the lightning protection pipe first is set to the optical cable side, and the lightning protection pipe second set on described The optical cable other side.

Preferably, a described ground string holes is respectively equipped on the tube wall of two sections of second pores.

Preferably, a described ground string holes is set to the lightning protection pipe first, another described ground string holes is set to institute State lightning protection pipe second.

A kind of optical cable is arranged with two sections of metal armour pipes mutually disconnected, including any of the above side on the optical fiber of the optical cable Lightning protection device described in case, the optical fiber are arranged in first pore, and two sections of metal armour pipes are respectively arranged on described The both ends of one pore and the end for being connected to the first pore tube wall.

The utility model has the following beneficial effects:

The utility model provides a kind of lightning protection device and optical cable, two sections of metals armour pipe therein are respectively arranged on the first pore Both ends and the end for being connected to the first pore tube wall, i.e. the tube wall of the first pore be located in metal armour pipe that two sections mutually disconnect it Between, if lightning stroke is beaten on optical cable, because the impedance for the first pore tube wall being located between two sections of metal armour pipes is higher, can prevent Gap between the metal armour pipe that is disconnected of thunder and lightning breakdown, the tube wall of the first pore can protect again be exposed to two sections of metal armour pipes it Between optical fiber.

Detailed description of the invention

It, below will be to the utility model embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root Other attached drawings are obtained according to the content of the utility model embodiment and these attached drawings.

Fig. 1 is the assembling schematic diagram of lightning protection pipe first, ground line and optical cable；

Fig. 2 is the top view of lightning protection pipe；

Fig. 3 is the cross-sectional view in the section A in Fig. 2；

Fig. 4 is the stereoscopic schematic diagram one of lightning protection pipe；

Fig. 5 is the stereoscopic schematic diagram two of lightning protection pipe；

Fig. 6 is first stereoscopic schematic diagram of lightning protection pipe.

In figure:

1- lightning protection pipe；The first pore of 11-；The second pore of 12-；Second pore in 1201-；Outer second pore of 1202-； The ground 121- string holes；122- is grounded threaded hole；123- tightening threaded hole；101- lightning protection pipe first；The first clamp of 1011-； The first bayonet of 1012-；102- lightning protection pipe second；

2- ground line；

100- metal armour pipe；

200- cable sheath.

Specific embodiment

The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer, It is described in further detail below in conjunction with technical solution of the attached drawing to the utility model embodiment, it is clear that described reality Applying example is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, It is practical new to belong to this for those skilled in the art's every other embodiment obtained without creative efforts The range of type protection.

Embodiment one

The present embodiment provides a kind of lightning protection devices, the lightning protection for optical cable.Referring to Fig. 1, optical cable includes optical fiber, is arranged In the metal armour pipe 100 on optical fiber and the cable sheath 200 being sheathed on metal armour pipe 100.In the present embodiment, in optical cable Electric current caused by being struck by lightning is disconnected when being struck by lightning, and cuts off metal armour pipe 100 and cable sheath 200.Wherein, metal armour pipe 100 It can be metal hose, optical fiber is exposed between the metal armour pipe 100 that two sections mutually disconnect, and two sections of metal armour pipes 100 are exposed to two Between the cable sheath 200 that section mutually disconnects.

Referring to figure 1, figure 2 and figure 3, lightning protection device includes the lightning protection pipe 1 being made of insulating material, lightning protection pipe 1 With the first pore 11 and two section of second pore 12.First pore 11 is set to the middle part of lightning protection pipe 1, two section of second pore 12 It is respectively communicated in the first pore 11, one section of second pore 12 is set to one end of the first pore 11, and another section of the second pore 12 is set to The other end of first pore 11.First pore 11 and two section of second pore 12 are coaxially disposed and along the length of lightning protection pipe 1 Direction extends, and the length direction of lightning protection pipe 1 is along linear extension.

Specifically, the first pore 11 and two section of second pore 12 run through the both ends of lightning protection pipe 1, and optical fiber is arranged in first In pore 11 and two section of second pore 12.The internal diameter of first pore 11 be less than metal armour pipe 100 internal diameter, the second pore 12 it is interior Diameter is greater than the outer diameter of metal armour pipe 100.

Specifically, one section of metal armour pipe 100 is set to one end of the first pore 11, and another section of metal armour pipe 100 is set to first The other end of pore 11, and the end abutment of metal armour pipe 100 is in the end of 11 tube wall of the first pore, the i.e. pipe of the first pore 11 Wall is located between two sections of metal armour pipes 100.Wherein, one section of metal armour pipe 100 is inserted in one section of second pore 12, Ling Yiduan Metal armour pipe 100 is inserted in another section of the second pore 12.

If lightning stroke beat on optical cable, because 11 tube wall of the first pore being located between two sections of metal armour pipes 100 impedance compared with Height, the gap between two sections of metal armour pipes 100 that thunder and lightning breakdown can be prevented to be disconnected, the tube wall of the first pore 11 can be protected again The optical fiber being exposed between two sections of metal armour pipes 100；The tube wall of second pore 12 can be protected again and be exposed to two sections of cable sheaths 200 Between metal armour pipe 100.

Referring also to Fig. 1, Fig. 2 and Fig. 3, lightning protection device further includes ground line 2, and ground line 2 is inserted in 12 tube wall of the second pore On ground string holes 121 in and be electrically connected with metal armour pipe 100.Ground string holes 121 extends along the length direction of the second pore 12, ground wire The opening in hole 121 is set to the end of outer second pore, 1202 tube wall.Wherein, ground line 2 is electrically connected with metal armour pipe 100, can Electric current caused by being struck by lightning imports the earth by ground line 2 by metal armour pipe 100, so that the existing institute that will be struck by lightning of lightning protection device The effect that the electric current of generation is obstructed, and play the role of draining in the generated electric current of lightning stroke.

Specifically, every section of second pore 12 includes the second pore 1201 and one section of outer second pore in one section to be interconnected 1202.The second pore 1201, which is respectively communicated with, in two sections is set to the first pore 11 in the second pore 1201 in the first pore 11, one section One end, the second pore 1201 is set to the other end of the first pore 11 in another section.Outer second pore 1202 is set to interior second pipe The outer end in hole 1201, one section of outer second pore 1202 are opened in one end of lightning protection pipe 1, and another section of outer second pore 1202 is opened Set on the other end of lightning protection pipe 1.

Specifically, interior second pore 1201 and the coaxial arrangement of outer second pore 1202 and the first pore 11, interior second pore 1201 internal diameter is greater than the internal diameter of metal armour pipe 100 and is less than the internal diameter of cable sheath 200, and the internal diameter of outer second pore 1202 is big In the outer diameter of cable sheath 200.

Specifically, cable sheath 200 is set to the outer end of interior second pore 1201, and the end abutment of cable sheath 200 is in interior The end of second pore, 1201 tube wall.Wherein, one section of cable sheath 200 is inserted in one section of outer second pore 1202, Ling Yiduan Cable sheath 200 is inserted in another section of outer second pore 1202；One section of metal armour pipe 100 is inserted in the second pore in one section In 1201, another section of metal armour pipe 100 is inserted in another section in the second pore 1201.

Referring to figs. 2 and 3, the tube wall of interior second pore 1201 is equipped with is connected with the second pore 12 and ground string holes 121 Ground connection threaded hole 122, ground connection threaded hole 122 runs through the tube wall of interior second pore 1201, is grounded the axis and the of threaded hole 122 The axis of two pores 12 intersects vertically.It is bolted with earthing screw made of metal in ground connection threaded hole 122, by being grounded threaded hole 122, earthing screw passes through the tube wall of interior second pore 1201 and pushes against in metal armour pipe 100 to be electrically connected with metal armour pipe 100 It connects.Meanwhile earthing screw is spirally connected with ground connection threaded hole 122, enables earthing screw according to the diameter of metal armour pipe 100, And accordingly adjust the length that earthing screw protrudes into interior second pore 1201.

Specifically, ground line 2 is then grounded 2 companies by ground string holes 121 and ground connection threaded hole 122 if metallic cable Logical portion, is wound in earthing screw and is electrically connected with earthing screw；Ground line 2 is then grounded 2 by ground string holes if metallic rod 121 with ground connection threaded hole 122 interconnecting part, be connected to earthing screw and be electrically connected with earthing screw.Ground string holes 121, ground connection spiral shell Dismounting and replacement convenient for ground line 2 are played the role of in the setting of pit 122 and earthing screw.

Referring also to Fig. 2 and Fig. 3, the tube wall of the second pore 12 is equipped with the tightening threaded hole being connected with ground string holes 121 123.Tightening threaded hole 123 is opened in the outer surface of 12 tube wall of the second pore, the axis of tightening threaded hole 123 and the second pore 12 Axis intersect vertically.Holding screw is bolted in tightening threaded hole 123, holding screw is used for dead earth line 2, passes through ground wire The interconnecting part in hole 121 and tightening threaded hole 123, holding screw protrude into ground string holes 121 and push against in ground line 2.Holding screw energy It does not depart from ground line 2 in earthing screw, guarantees earthing screw and metal armour pipe 100 and be grounded 2 to be electrically connected；Meanwhile Holding screw is spirally connected with tightening threaded hole 123, enables holding screw according to the diameter of ground line 2, and accordingly adjusts tight Determine the length that screw protrudes into ground string holes 121.

Specifically, opposite tightening threaded hole 123, ground connection threaded hole 122 are arranged close to the first pore 11.Lightning protection pipe 1 When assembling with ground line 2, ground line 2 is inserted into the tube wall of the second pore 12 by the opening of ground string holes 121 (referring to Fig. 1), until Cooperate with earthing screw, then be fixed by holding screw.

Referring also to Fig. 2 and Fig. 3, a ground string holes 121 is respectively equipped on the tube wall of two section of second pore 12, ground line 2 is set There are two, two piece-root grafting ground wires 2 and two ground string holes 121 correspond and cooperate, two piece-root grafting ground wires 2 and two sections of metal armour pipes 100 1 One corresponding electrical connection increases the reliability that lightning protection device drains the generated electric current of lightning stroke.

Specifically, a ground string holes 121, the geometric center of opposite lightning protection pipe 1 are symmetrical with another ground string holes 121 Setting；The ground connection threaded hole 122 and tightening threaded hole 123 being connected with a ground string holes 121, lightning protection pipe 1 is several relatively What center, and the ground connection threaded hole 122 and tightening threaded hole 123 that are connected with another ground string holes 121 are symmetrical arranged.

Referring to Fig. 3, Fig. 4 and Fig. 5,1 split settings of lightning protection pipe are divided in order to the assembly of optical cable and lightning protection pipe 1 For the lightning protection pipe first 101 mutually fastened and lightning protection pipe second 102, lightning protection pipe first 101 is set to Optical cable side, lightning protection pipe second 102 is set to the optical cable other side.One ground 121,122 and of ground connection threaded hole of string holes One tightening threaded hole 123 is set to lightning protection pipe first 101, another ground string holes 121, another ground connection threaded hole 122 It is set to lightning protection pipe second 102 with another tightening threaded hole 123, so that lightning protection pipe first 101 and lightning protection are protected Pillar second 102 identical in quality and structure is corresponding, does not influence the balance of optical cable entirety.

Referring to Fig. 6, lightning protection pipe first 101 is equipped with the first clamp 1011 and the first bayonet 1012, lightning protection Pipe second 102 is equipped with the second clamp and the second bayonet, and the first clamp 1011 is mutually clamped with the second bayonet and is set to optical cable Side, the second clamp are clamped and are set to the other side of optical cable with 1012 phase of the first bayonet.

Specifically, when optical cable and lightning protection pipe 1 assemble, metal armour pipe 100 and cable sheath 200 are cut off, it will be in optical cable Optical fiber, metal armour pipe 100 and cable sheath 200 be matched with lightning protection pipe first 101 or lightning protection pipe second 102 Upper (referring to Fig. 1), then lightning protection pipe first 101 and lightning protection pipe second 102 clamping are assembled into complete lightning protection Then earthing screw is tightened and is pushed against in metal armour pipe 100 by protection pipe 1.

Embodiment two

The present embodiment provides a kind of optical cables, including the lightning protection device provided in embodiment one.

Referring to Fig. 1, optical cable includes optical fiber, the metal armour pipe 100 being sheathed on optical fiber and is sheathed on metal armour pipe 100 Cable sheath 200.In the present embodiment, to disconnect the generated electric current that is struck by lightning when optical cable is struck by lightning, and metal armour pipe is cut off 100 and cable sheath 200.Wherein, metal armour pipe 100 can be metal hose, and optical fiber is exposed to two sections of metal armours mutually disconnected Between pipe 100, two sections of metal armour pipes 100 are exposed between two sections of cable sheaths mutually disconnected 200.

Specifically, one section of metal armour pipe 100 is set to one end of the first pore 11, and another section of metal armour pipe 100 is set to first The other end of pore 11, and the end abutment of metal armour pipe 100 is in the end of 11 tube wall of the first pore, earthing screw pass through interior the It the tube walls of two pores 1201 and pushes against in metal armour pipe 100；Cable sheath 200 is set to the outer end of interior second pore 1201, optical cable The end abutment of crust 200 is in the end of interior second pore, 1201 tube wall.

Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended Scope of the claims determine.

Claims (10)

1. a kind of lightning protection device is arranged with two sections of gold mutually disconnected for the lightning protection of optical cable on the optical fiber of the optical cable Belong to armour pipe (100), which is characterized in that the lightning protection device includes the lightning protection pipe (1) being made of insulating material, the lightning protection Protection pipe (1) has the first pore (11), and first pore (11) is used to wear the optical fiber, first pore (11) Tube wall is configured as being located between two sections of metal armour pipes (100), and one end of first pore (11) tube wall abuts Another section of metal armour pipe is connected in the other end of one section of metal armour pipe (100), the first pore (11) tube wall (100)。

2. lightning protection device according to claim 1, which is characterized in that the lightning protection device further includes ground line (2), described Ground line (2) is set on the lightning protection pipe (1) and is electrically connected with the metal armour pipe (100).

3. lightning protection device according to claim 2, which is characterized in that the lightning protection pipe (1) also has two section second Pore (12), two sections of second pores (12) are respectively arranged on the both ends of first pore (11), one section of second pore (12) it is inserted with one section of metal armour pipe (100) in, is inserted with another section of gold in another section of second pore (12) Belong to armour pipe (100).

4. lightning protection device according to claim 3, which is characterized in that the ground line (2) is inserted in second pore (12) in the ground string holes (121) on tube wall, the tube wall of second pore (12) is equipped with and second pore (12) and institute The ground connection threaded hole (122) that ground string holes (121) is connected is stated, is bolted with earthing screw in the ground connection threaded hole (122), it is described Earthing screw is electrically connected with the metal armour pipe (100) and the ground line (2).

5. lightning protection device according to claim 4, which is characterized in that the tube wall of second pore (12) is equipped with and institute The tightening threaded hole (123) that ground string holes (121) is connected is stated, is bolted in the tightening threaded hole (123) described in being used to fix It is grounded the holding screw of (2).

6. lightning protection device according to claim 5, which is characterized in that the relatively described tightening threaded hole (123), the ground connection Threaded hole (122) is arranged close to first pore (11).

7. according to the described in any item lightning protection devices of claim 4-6, which is characterized in that lightning protection pipe (1) fission is set It sets, is divided into lightning protection pipe first (101) and lightning protection pipe second (102) mutually fastened, the lightning protection pipe It is set to the optical cable side for first (101), the lightning protection pipe second (102) is set to the optical cable other side.

8. lightning protection device according to claim 7, which is characterized in that on the tube wall of two sections of second pores (12) respectively Equipped with a described ground string holes (121).

9. lightning protection device according to claim 8, which is characterized in that a described ground string holes (121) is set to the lightning protection Protection pipe first (101), another described ground string holes (121) is set to the lightning protection pipe second (102).

10. a kind of optical cable, two sections of metal armour pipes (100) mutually disconnected are arranged on the optical fiber of the optical cable, which is characterized in that Including such as described in any item lightning protection devices of claim 1-9, the optical fiber is arranged in first pore (11), two sections of institutes Metal armour pipe (100) is stated to be respectively arranged on the both ends of first pore (11) and be connected to the end of the first pore (11) tube wall Portion.