CN210314719U

CN210314719U - Lightning protection safety net

Info

Publication number: CN210314719U
Application number: CN201920594963.7U
Authority: CN
Inventors: 宋炳涛; 沈明; 姜润喜; 邱延平; 李甜; 石士超; 方文青; 张范义
Original assignee: Shandong Lupu Science & Technology Co ltd; Ropenet Group Co Ltd
Current assignee: Shandong Lupu Science & Technology Co ltd; Ropenet Group Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-04-14
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a lightning protection safety net relates to the safety protection net field, adopts linear density to account for more than or equal to 70% flexible reinforcing fiber (2) and linear density to account for and is less than or equal to 30% flexible conductive fiber (1) composite yarn warp knitting to become the net, and flexible conductive fiber (1) cladding is outer in flexible reinforcing fiber (2), wherein flexible reinforcing fiber (2) set up to resistivity R₂≥10¹⁰Omega/m, strength F₂More than or equal to 18 cN/dtex; the flexible conductive fiber (1) is set to a resistivity R₁≤10⁶Omega/m, strength F₁Satisfies the condition that 4cN/dtex is less than or equal to F₁Less than or equal to 7cN/dtex, elongation E₁≥20%。The utility model discloses structure and material use to dictyosome itself are improved to designed corresponding preparation method, it is effectual to prevent lightning, and the security is high, can splice or the overlap joint according to being covered the thing shape difference, portable and construction, repeatedly usable.

Description

Lightning protection safety net

Technical Field

The utility model belongs to the technical field of safety protection network and specifically relates to a safety net is hit in lightning protection, the lightning protection of civil facilities such as the building construction place that mainly used tired more, breed base, circuit facility.

Background

In temperate zones and subtropical zones in China, lightning disasters are one of the most serious natural disasters in China, and have the characteristics of high occurrence frequency, strong outbreak, serious damage and wide range. The lightning protection work is done in a multi-thunder area and in a thunderstorm day, and the lightning protection method is an indispensable important link for safety production. The lightning rod is adopted to guide lightning current to be discharged in the prior lightning protection technology, a large number of metal components are usually adopted for a grounding wire of the lightning rod to be buried underground for reliable grounding, the installation and construction are complex, the one-time investment cost is high, the position cannot be moved, and the lightning protection method is not suitable for a plurality of fields.

For example: the patent No. 2018204465567, entitled "communication optical cable against lightning strike", the main protective measure is a polyvinyl chloride protective sleeve, the outer surface is fixedly connected with the inner wall of the shielding layer through super absorbent resin, and Miss outer surface of the shielding layer is provided with flame retardant polyvinyl chloride; the patent No. 2017214405479 entitled "lightning protection net for building equipment" mainly designs a lightning protection device to protect the structure of the lightning protection device, the protection net adopts a common protection net, when struck by lightning, the lightning protection device can lead the lightning into the ground to eliminate the lightning effect; the application number 2018106923102 is named as 'a lightning protection net for construction equipment', and the height of the protection net is adjustable through other structures without improving the structure of the protection net body; patent No. 2015209378063, the name is "a building equipment protection network against lightning", realizes better lightning protection effect through the combination of structures such as arrester, lightning rod, lightning-proof wire, lightning-arrest ball, does not improve the protection network itself equally.

Therefore, a lightning protection safety protection net which is convenient to mount and carry, low in cost, detachable, foldable and deformable is urgently needed in the industry.

Disclosure of Invention

For solving the technical problem that above-mentioned exists, the utility model provides a safety net is hit in lightning protection improves the structure of dictyosome itself and material use, and the lightning protection is hit effectually, and the security is high, can splice or the overlap joint according to being covered the thing shape difference, portable and construction, repeatedly usable.

The utility model provides a technical scheme that its technical problem adopted is:

a lightning protection safety net is characterized in that flexible reinforced fibers with the linear density ratio of more than or equal to 70% and flexible conductive fiber composite yarns with the linear density ratio of less than or equal to 30% are warp-knitted into a net, and the flexible conductive fibers are coated on the outer layer of the flexible reinforced fibers, wherein the flexible reinforced fibers are set to have the resistivity R₂≥10¹⁰Omega/m, strength F₂More than or equal to 18 cN/dtex; the flexible conductive fiber is set to a resistivity R₁≤10⁶Omega/m, strength F₁Satisfies the condition that 4cN/dtex is less than or equal to F₁Less than or equal to 7cN/dtex, elongation E₁≥20%。

The flexible reinforced fiber adopts aramid fiber with linear density N_dSatisfies that 400D is less than or equal to N_dLess than or equal to 1000D, the flexible conductive fiber adopts nylon composite graphene monofilament with linear density N_ySatisfies that 320D is less than or equal to N_y≤2000D。

The utility model discloses compare with traditional lightning protection network, have following beneficial effect:

1) the net body is improved, the structure is simpler, the use is more convenient, the flexibility is strong, the splicing and lapping of the net sheets can be carried out according to the use working conditions and different shapes of covered objects, the construction and the removal are convenient, the disposable investment is low, and the net can be repeatedly used;

2) the flexible reinforced fibers enable the matrix of the net to have higher strength and flexibility and stronger durability, and the flexible conductive fibers and the flexible reinforced fibers are warp-knitted into a special structure of the net, so that the conductive material is in a parallel structure on the whole net, the resistance and the using amount of the conductive material are greatly reduced, and the conductive efficiency is improved;

3) the matrix of the net is made of flexible reinforced materials, so that melting and burning conditions cannot be caused, the safety is higher, and the lightning protection effect is better;

4) the manufacturing method adopts a warp knitting looping mode to form the net, no net knots are formed, the diameter of the net meshes is large, the wind resistance in the natural environment is small, the phenomenon of toppling or damage caused by strong wind is avoided, and the service life of the safety net is greatly prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the specific structure of the flexible reinforcing material and the flexible conductive material.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments:

as shown in figures 1-2, a lightning protection safety net adopts flexible reinforced fibers 2 with the linear density ratio of more than or equal to 70 percent and flexible conductive fibers 1 composite yarns with the linear density ratio of less than or equal to 30 percent to form a net through warp knitting, and the flexible conductive fibers 1 are coated on the outer layer of the flexible reinforced fibers 2, wherein the resistivity R of the flexible reinforced fibers 2 is set as₂≥10¹⁰Omega/m, strength F₂More than or equal to 18 cN/dtex; the flexible conductive fiber 1 is set to a resistivity R₁≤10⁶Omega/m, strength F₁Satisfies the condition that 4cN/dtex is less than or equal to F₁Less than or equal to 7cN/dtex, elongation E₁≥20%。

The flexible reinforced fiber 2 adopts aramid fiber with linear density N_dSatisfies that 400D is less than or equal to N_dLess than or equal to 1000D, the flexible conductive fiber 1 adopts nylon composite graphene monofilament with linear density N_ySatisfies that 320D is less than or equal to N_y≤2000D。

The utility model discloses a method preparation as follows realizes:

1) preparing a yarn of the flexible reinforced fiber 2, twisting a certain amount of the multifilaments of the flame-retardant high-temperature-resistant flexible reinforced fiber 2 by a twisting machine to prepare the yarn, wherein the yarn twist T₂T is more than or equal to 80₂The twist/m is less than or equal to 100, and the yarn twist direction is Z direction;

2) preparing the yarn of the flexible conductive fiber 1, doubling a certain amount of the single filaments of the flexible conductive fiber 1 by a doubling machine, applying a certain weak twist after doubling, and applying a weak twist with a T degree₁T is more than or equal to 20₁Less than or equal to 30 twists/m, the twisting direction is Z direction, and the strand resistivity R and the number n of the monofilaments meet the following relationship: r = R₁/n，R₁Is the resistivity of the flexible conductive fiber 1, and R is less than or equal to 10⁶；

3) Preparing composite yarns, compounding the two yarns prepared in the step 1) and the step 2) according to the S direction, wrapping the flexible reinforcing fiber 2 yarns by the flexible conductive fiber 1 yarns, ensuring that the conductive layer of the yarns is positioned at the outer layer and the twist T of the composite yarns₀T is in the range of 40-T₀Less than or equal to 60 twists/m;

4) manufacturing pan heads, namely installing a plurality of composite yarns prepared in the step 3) on an equal-tension creel, regularly penetrating a warping plate, winding the composite yarns on the pan heads of the warping machine in parallel to ensure uniform tension, controlling the yarn tension F to be more than or equal to 2N and less than or equal to 15N, and determining the number of the manufactured pan heads according to the transverse width of a safety net;

5) warp knitting into net, the pan head with specified quantity is installed on the warp knitting net machine, the crimp density is 2-15 rows/cm, the needle pitch is 8-16 needles per inch, the silk thread parallelly passes through the let-off, guide bar and needle plate, and mutually interlining and lining are mutually strung to form a net body with the mesh inner diameter of 2cm and D of 5 cm.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. A lightning protection safety net is characterized in that flexible reinforced fibers (2) with the linear density ratio of more than or equal to 70% and flexible conductive fibers (1) with the linear density ratio of less than or equal to 30% are warp-knitted into a net, the flexible conductive fibers (1) are coated on the outer layer of the flexible reinforced fibers (2), wherein the flexible reinforced fibers (2) are set to have the resistivity R₂≥10¹⁰Omega/m, strength F₂More than or equal to 18 cN/dtex; the flexible conductive fiber (1) is set to a resistivity R₁≤10⁶Omega/m, strength F₁Satisfies the condition that 4cN/dtex is less than or equal to F₁Less than or equal to 7cN/dtex, elongation E₁≥20%。

2. The lightning protection safety net of claim 1, characterized in that the flexible reinforced fiber (2) is aramid fiber with linear density N_dSatisfies that 400D is less than or equal to N_dLess than or equal to 1000D, the flexible conductive fiber (1) adopts nylon composite graphene monofilament with linear density N_ySatisfies that 320D is less than or equal to N_y≤2000D。