CN211981142U

CN211981142U - Natural gas line lightning protection system

Info

Publication number: CN211981142U
Application number: CN202021008594.8U
Authority: CN
Inventors: 郭丹
Original assignee: Shenzhen Ganghua Construction Co ltd
Current assignee: Shenzhen Ganghua Construction Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-11-20
Anticipated expiration: 2030-06-04

Abstract

The utility model belongs to the technical field of natural gas line's technique and specifically relates to a natural gas line lightning protection system is related to. The lightning protection system comprises a diffusing pipe, a rain cap, a lightning protection assembly and a supporting piece, wherein the top of the diffusing pipe is connected with the rain cap, one end of the supporting piece is connected with the rain cap, the other end of the supporting piece is connected with the top end of the diffusing pipe, and the supporting piece is used for supporting the rain cap; the top of the rain cap is connected with a lightning protection assembly, and the lightning protection assembly is used for lightning attraction; the rain cap is made of a conductive material, and the outer wall of the diffusing pipe is made of a conductive material; one end of the diffusing pipe, which is far away from the rain cap, is provided with a metal conducting rod, and the metal conducting rod is buried underground. The utility model discloses following beneficial effect has: the thunder and lightning pours into the ground through lightning-arrest subassembly, rain cap, diffusing pipe and metal conducting rod, can prevent effectively that the thunder and lightning from hitting the gas pipeline, and the occupation of land position is less moreover, and electrically conductive effect is better.

Description

Natural gas line lightning protection system

Technical Field

The utility model relates to a natural gas line's technical field, more specifically says, it relates to a natural gas line lightning protection system.

Background

In the laying process of the natural gas pipeline, in consideration of the problem that the natural gas pipeline needs to be overhauled, a diffusing pipe is arranged at a certain distance. The bottom of the diffusing pipe is communicated with the natural gas pipeline through a valve. When maintaining natural gas line, can open the valve of diffusing the pipe, discharge the natural gas, can prevent to cause danger in the natural gas line in the maintenance of natural gas line, combustion-supporting other sneaks into.

In order to prevent rainwater from entering the diffusing pipe during raining, a bent pipe is generally designed at the top end of the diffusing pipe, or a rain cap is installed at the top of the diffusing pipe. The top of the diffusion pipe is at least 10m higher than the bottom by regulation, so that in case of thunderstorm weather, if thunder and lightning are generated around the diffusion pipe, the thunder and lightning are easily concentrated on the diffusion pipe and the natural gas pipeline connected below the diffusion pipe, which is very dangerous.

Therefore, in order to prevent the natural gas pipeline from being hit by thunder and lightning in thunderstorm weather to cause danger, a natural gas pipeline lightning protection system is urgently needed, and the natural gas pipeline can be prevented from being hit by thunder and lightning.

Disclosure of Invention

The utility model aims at providing a natural gas line lightning protection system mainly lies in solving the unable lightning protection's of taking shelter from problem of natural gas line among the prior art.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the natural gas pipeline lightning protection system comprises a diffusing pipe, a rain cap, a lightning protection assembly and a supporting piece, wherein the top of the diffusing pipe is connected with the rain cap, one end of the supporting piece is connected with the rain cap, the other end of the supporting piece is connected with the top end of the diffusing pipe, and the supporting piece is used for supporting the rain cap; the top of the rain cap is connected with a lightning protection assembly, and the lightning protection assembly is used for lightning attraction; the rain hat is made of conducting materials, and the outer wall of the diffusing pipe is made of conducting materials.

Through adopting above-mentioned technical scheme, the rain cap that the top of diffusing pipe set up can prevent effectively that the rainwater from flowing backward and getting into in the diffusing pipeline when raining. And lightning-arrest subassembly sets up at the top of rain cap, compares in the outer wall connection through connecting a fall thunder connecting piece and diffusing pipe, and such connected mode can reduce the shared area of whole natural gas line lightning protection system. In addition, because the rain cap is connected with the lightning protection component, the weight born by the rain cap is increased, and in order to prevent the rain cap from being crushed, a supporting piece is also connected between the rain cap and the diffusing pipe. When thunderstorm weather, the rain cap can prevent that the rainwater from getting into and diffusing in the pipe, if nearby diffusing and fighting a thunder, ground can be poured into along lightning-arrest subassembly, rain cap, diffusing pipe outer wall and the order on ground to the thunder, effectively prevents to fight the influence that the thunder caused to diffusing the pipe.

The utility model discloses further set up to: the lightning protection assembly comprises a main lightning protection part and an auxiliary lightning protection part, wherein one end of the main lightning protection part is connected with the top end of the rain cap, and the other end of the main lightning protection part is provided with a lightning protection tip used for lightning conduction; the main lightning protection part is provided with a metal ball body; the auxiliary lightning protection members are arranged on the outer surface of the rain cap, the number of the auxiliary lightning protection members is more than two, and the auxiliary lightning protection members are arranged at intervals along the circumferential direction of the rain cap; the primary lightning conductor is not shorter than the secondary lightning conductor.

Through adopting above-mentioned technical scheme, the lightning-arrest pointed end of main lightning-arrest piece is used for attracting thunder, in addition, the metal ball who sets up on the main lightning-arrest piece, and the thunder that attracts thunder that also can be fine prevents that the thunder and lightning from directly hitting the gas pipeline.

The utility model discloses further set up to: and one end of the lightning protection tip, which is far away from the main lightning protection part, is an arc surface.

By adopting the technical scheme, experiments prove that the lightning protection tip of the arc surface has better lightning guiding effect compared with a needle-shaped lightning protection tip.

The utility model discloses further set up to: the lightning protection tip and the main lightning protection member are integrally formed.

Through adopting above-mentioned technical scheme, lightning-arrest pointed end passes through integrated into one piece with main lightning-arrest piece, and this kind of connected mode is comparatively firm, and integrated into one piece compares in other detachable connected modes moreover, and its electrically conductive effect is better.

The utility model discloses further set up to: an inserting groove is formed in the outer wall of the diffusing pipe, one end of the inserting groove is communicated with the top of the diffusing pipe, a clamping groove is formed in one end, away from the diffusing pipe, of the inserting groove, and an included angle is formed between the length direction of the clamping groove and the length direction of the inserting groove; the rain cap comprises a top cap and an L-shaped connecting piece, and the top cap is fixedly connected with the L-shaped connecting piece; one end of the L-shaped connecting piece, which is far away from the top cap, is used for being plugged along the plugging groove and is used for rotating into the clamping groove to be clamped with the clamping groove.

Through adopting above-mentioned technical scheme, when being connected rain cap and diffusing pipe, can insert the inserting groove with the L shape connecting piece of rain cap, then rotate the rain cap, make L shape connecting piece and joint groove joint to fixed rain cap. Because L shape connecting piece and joint groove joint, so the thunder and lightning is followed lightning-arrest subassembly and is followed top cap, L shape connecting piece, joint groove cell wall, diffuse tub of outer wall leading-in ground.

The utility model discloses further set up to: the clamping groove is used for accommodating the L-shaped connecting piece, and the clamping groove is used for being connected with the L-shaped connecting piece.

Through adopting above-mentioned technical scheme, the fastener can prevent that L shape connecting piece from breaking away from the joint groove.

The utility model discloses further set up to: the fastener includes the bolt, and the fastener is used for with joint groove threaded connection.

Through adopting above-mentioned technical scheme, when the installation fastener, only need to rotate the bolt and can connect, this kind of connected mode is comparatively simple and convenient.

The utility model discloses further set up to: the ring channel has been seted up at the bleeder line top, and the one end and the hood welding of bracing piece, the other end of bracing piece are used for pegging graft with the ring channel, and when L shape connecting piece and joint groove joint, the bracing piece contradicts with the tank bottom of ring channel.

Through adopting above-mentioned technical scheme, the one end and the top cap welding of bracing piece, the other end of bracing piece is contradicted with the tank bottom of ring channel, can effectively support the top cap like this, prevents it because overweight results in damaging.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the thunder and lightning pours into the ground through lightning-arrest subassembly, rain cap, diffusing pipe and metal conducting rod, can effectively prevent the thunder and lightning from hitting the gas pipeline.

2. Because the lightning-protection component is directly arranged above the rain cap, the occupied area of the lightning-protection component can be reduced, and the occupied volume is reduced.

3. Because the lightning-protection tip in the lightning-protection component is the cambered surface, the lightning-protection tip has a better lightning-guiding effect, and prevents lightning from hitting a gas pipeline.

Drawings

Fig. 1 is a schematic overall structural diagram of a natural gas pipeline lightning protection system according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A in FIG. 1;

fig. 3 is a top view of a diffusing pipe according to an embodiment of the present invention.

Reference numerals: 1. a gas pipeline; 2. a valve; 3. a diffusing pipe; 31. an outer layer; 32. an insulating layer; 33. an inner layer; 34. inserting grooves; 35. a clamping groove; 36. an annular groove; 4. a rain cap; 41. a top cap; 42. an L-shaped connector; 5. a lightning protection assembly; 51. a primary lightning conductor; 511. a lightning protection tip; 52. a secondary lightning conductor; 53. a metal sphere; 6. a support member; 7. a metal conductive rod; 8. a fastener.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a natural gas pipeline lightning protection system includes a gas pipeline 1, a valve 2, a diffusing pipe 3, a rain cap 4, a lightning protection assembly 5 and a support member 6. Wherein, gas pipeline 1 is used for letting in the gas, and gas pipeline 1 passes through valve 2 with diffuse tub 3 and is connected, and the length direction of gas pipeline 1 is perpendicular with the length direction who diffuses tub 3, and diffuses tub 3 and set up for vertical direction. The diffusing pipe 3 is a three-layer pipe body, as shown in fig. 3, the inner layer 33, the insulating layer 32 and the outer layer 31 are respectively arranged from inside to outside, wherein the inner layer 33 and the outer layer 31 are both conductive metal supports, the insulating layer 32 is made of insulating materials, the diffusing pipe 3 of the three is far away from one end of the gas pipeline 1, namely, the top of the diffusing pipe 3 is connected with the rain cap 4, the top of the rain cap 4 is connected with the lightning protection component 5, and the lightning protection component 5 is used for lightning protection. Rain cap 4 is rain cap 4 that conducting material made, and 3 outer walls of diffusing pipe are made for conducting material, and the one end fixed welding that diffusing pipe 3 kept away from rain cap 4 has metal conducting rod 7, and metal conducting rod 7 is used for burying underground. In thunderstorm weather, the lightning arrester introduces the thunder and lightning to the rain cap 4, and the back edge rain cap 4 is to diffusing pipe 3, and the metal conducting rod 7 that gets into finally gets into ground from diffusing pipe 3. Because whole lightning arrester is connected on rain cap 4, in order to place rain cap 4 and lead to damaging because pressure is too big, support piece 6's one end is connected with rain cap 4, and support piece 6's the other end is connected with the top of diffusing pipe 3, and support piece 6 is used for supporting rain cap 4.

Specifically, as shown in fig. 1 and fig. 2, in order to connect the rain cap 4 with the top of the diffusing pipe 3, in this embodiment, the insertion groove 34 is formed in the outer wall (outer layer 31) of the diffusing pipe 3, one end of the insertion groove 34 is communicated with the top of the diffusing pipe 3, one end of the insertion groove 34, which is far away from the diffusing pipe 3, is provided with the clamping groove 35, an included angle is formed between the length direction of the clamping groove 35 and the length direction of the insertion groove 34, and the included angle can be 90 degrees, that is, the length direction of the clamping groove 34 is consistent with the axial direction of the diffusing pipe 3, and the length direction of the clamping groove 35 is perpendicular to the axial direction of the diffusing pipe 3. Rain cap 4 includes top cap 41 and L shape connecting piece 42, and the two is conductive metal material and makes, top cap 41 and L shape connecting piece 42 fixed connection, and the connected mode is the welding, and the one end of keeping away from top cap 41 of L shape connecting piece 42 is used for along inserting groove 34 grafting, and is used for rotating to in the joint groove 35 in order to joint with joint groove 35. In order to prevent the L-shaped connecting piece 42 from being separated from the clamping groove 35, a fastening piece 8 is further arranged on the diffusing pipe 3, the fastening piece 8 is detachably connected with the clamping groove 35, and the fastening piece 8 is abutted against the L-shaped connecting piece 42. Fastener 8 is a bolt, and is corresponding, and joint groove 35 corresponds the position and has seted up threaded hole, and when L shape connecting piece 42 and joint groove 35 joint, fastener 8 and threaded hole threaded connection, the one end that L shape connecting piece 42 kept away from the lateral wall of joint groove 35 this moment is contradicted with fastener 8. In addition, since the supporting member 6 can support the rain cap 4, specifically, the top of the diffusing pipe 3 is provided with an annular groove 36 (shown in fig. 3), and the annular groove 36 is located on the outer layer 31. One end of the supporting rod is welded with the top cap 41, the other end of the supporting rod is used for being connected with the annular groove 36 in an inserting mode, when the L-shaped connecting piece 42 is connected with the clamping groove 35 in a clamping mode, the supporting rod is inserted into the annular groove 36, and the supporting rod is abutted to the groove bottom of the annular groove 36. The support rod is made of conductive materials.

As shown in fig. 1, the lightning protection assembly 5 includes a main lightning conductor 51 and a sub lightning conductor 52, wherein one end of the main lightning conductor 51 is connected to the top end of the rain cap 4, and the other end of the main lightning conductor 51 is provided with a lightning protection tip 511, and the lightning protection tip 511 is used for lightning. In the present embodiment, the end of the lightning protection tip 511 far from the main lightning conductor 51 is a cambered surface, because experiments prove that the lightning protection tip 511 with a cambered surface has a better lightning guiding effect than the lightning protection tip 511 with a needle shape. In addition, it is preferable that the lightning protection tip 511 has a diameter of 16 to 20 mm. The diameter of the lightning protection tip 511 in this embodiment is 18 mm. In order to improve the conductive effect of the main lightning conductor 51, the lightning protection tip 511 is integrally formed with the main lightning conductor 51. In addition, the main lightning conductor 51 is provided with the metal spheres 53, the number of the metal spheres 53 may be one or more, and the metal spheres 53 are provided at intervals in the longitudinal direction of the main lightning conductor 51, and in addition, the size of the metal spheres 53 is sequentially reduced in the upward direction in the height direction (when the number of the metal spheres 53 is two or more) in order to stabilize the main lightning conductor 51. The metal ball 53 is used as a lightning protection ball, which can introduce lightning and prevent the lightning from directly hitting the gas pipeline 1. In addition, the secondary lightning arrester 52 is arranged on the outer surface of the rain cap 4, and the number of the secondary lightning arresters 52 is two or more, and the secondary lightning arresters are arranged at intervals along the circumferential direction of the rain cap 4. The top end of each secondary lightning arrester 52 is also a cambered surface, and each secondary lightning arrester 52 is also provided with a metal sphere 53. In addition to this, the primary lightning conductor 51 is not shorter than the secondary lightning conductor 52. Thus, the pressure on the top of the rain cap 4 can be relieved, and the lightning can be concentrated to prevent the lightning from hitting the gas pipeline 1.

The implementation principle of the embodiment is as follows: when thunderstorm weather, rain cap 4 can effectively avoid the rainwater to get into and diffuse pipe 3 in, main lightning protection 51 that rain cap 4 top set up and vice lightning protection 52 can be fine draw the thunder, pour the thunder and lightning into the ground with rain cap 4, diffuse 3 outer walls of pipe, metal conducting rod 7 and the order on ground, prevent effectively that the lightning from hitting gas pipeline 1. In addition, because lightning-arrest subassembly 5 all sets up on rain cap 4, compare in the lightning-arrest mechanism of installation in addition, this kind of mode can reduce lightning-arrest subassembly 5's occupation of land space, practices thrift the space. In addition, since the lightning protection tip 511 has an arc shape, it can better induce lightning.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Natural gas line lightning protection system, its characterized in that: the lightning protection device comprises a diffusing pipe (3), a rain cap (4), a lightning protection assembly (5) and a supporting piece (6), wherein the top of the diffusing pipe (3) is connected with the rain cap (4), one end of the supporting piece (6) is connected with the rain cap (4), the other end of the supporting piece (6) is connected with the top end of the diffusing pipe (3), and the supporting piece (6) is used for supporting the rain cap (4);

the top of the rain cap (4) is connected with a lightning protection component (5), and the lightning protection component (5) is used for lightning induction;

the rain cap (4) is made of a conductive material, and the outer wall of the diffusing pipe (3) is made of a conductive material;

one end of the diffusing pipe (3) far away from the rain cap (4) is provided with a metal conducting rod (7), and the metal conducting rod (7) is buried underground.

2. A natural gas pipeline lightning protection system according to claim 1, characterized in that: the lightning protection assembly (5) comprises a main lightning protection part (51) and an auxiliary lightning protection part (52), wherein one end of the main lightning protection part (51) is connected with the top end of the rain cap (4), the other end of the main lightning protection part (51) is provided with a lightning protection tip (511), and the lightning protection tip (511) is used for guiding lightning;

the main lightning conductor (51) is provided with a metal ball body (53);

the auxiliary lightning protection members (52) are arranged on the outer surface of the rain cap (4), the number of the auxiliary lightning protection members (52) is more than two, and the auxiliary lightning protection members are arranged at intervals along the circumferential direction of the rain cap (4);

the primary lightning conductor (51) is not shorter than the secondary lightning conductor (52).

3. A natural gas pipeline lightning protection system according to claim 2, characterized in that: and one end of the lightning protection tip (511) far away from the main lightning protection piece (51) is an arc surface.

4. A natural gas pipeline lightning protection system according to claim 2, characterized in that: the lightning protection tip (511) and the main lightning conductor (51) are integrally formed.

5. A natural gas pipeline lightning protection system according to any one of claims 1 to 4, characterized in that: an inserting groove (34) is formed in the outer wall of the diffusing pipe (3), one end of the inserting groove (34) is communicated with the top of the diffusing pipe (3), a clamping groove (35) is formed in one end, far away from the diffusing pipe (3), of the inserting groove (34), and an included angle is formed between the length direction of the clamping groove (35) and the length direction of the inserting groove (34);

the rain cap (4) comprises a top cap (41) and an L-shaped connecting piece (42), and the top cap (41) is fixedly connected with the L-shaped connecting piece (42);

one end of the L-shaped connecting piece (42) far away from the top cap (41) is used for being plugged along the plugging groove (34) and is used for rotating into the clamping groove (35) to be clamped with the clamping groove (35).

6. A natural gas pipeline lightning protection system according to claim 5, characterized in that: the clamping device is further provided with a fastener (8), the fastener (8) is detachably connected with the clamping groove (35), and the fastener (8) is used for being abutted to one side, away from the side wall of the clamping groove (35), of the L-shaped connecting piece (42).

7. A natural gas pipeline lightning protection system according to claim 6, characterized in that: the fastener (8) comprises a bolt, and the fastener (8) is used for being in threaded connection with the clamping groove (35).

8. A natural gas pipeline lightning protection system according to claim 5, characterized in that: ring channel (36) have been seted up at diffusion pipe (3) top, and the one end and the hood (41) welding of bracing piece, the other end of bracing piece are used for pegging graft with ring channel (36), and when L shape connecting piece (42) and joint groove (35) joint, the bracing piece contradicts with the tank bottom of ring channel (36).