阅读说明：本技术 一种非引雷入地的避雷装置及方法 (Lightning arrester and method for non-lightning-induced ground ) 是由 王赞东 于 2019-11-01 设计创作，主要内容包括：本发明属于雷电防护技术领域且公开了一种非引雷入地的避雷装置及方法,可实现大范围内不形成雷击点的雷电防护,装置包括：预设大气电场强度大小阈值,实时探测防护区地面大气电场强度,当电场强度实测值大于大气电场强度大小阈值时,确定防护区上空是否存在雷云,根据实测的防护区地面大气电场强度的大小,判断所述雷云在本区域形成雷击的风险；向防护区内的大气空间发散等离子体,与雷云底部向地面发展的电荷,以及地面尖端逸出的电荷进行双向的电荷中和,从而抑制雷云底部电荷向防护区地面发展,地面尖端逸出的电荷向上发展,破坏雷击条件的形成,完成无雷击防护区的构建。本发明可以达到防护区内无雷击的目的,能够避免二次雷击的形成。(The invention belongs to the technical field of lightning protection and discloses a lightning protection device and a method without lightning strike, which can realize the lightning protection without forming a lightning strike point in a large range, and the device comprises: presetting an atmospheric electric field intensity threshold, detecting the ground atmospheric electric field intensity of a protection area in real time, determining whether thundercloud exists above the protection area when an electric field intensity measured value is larger than the atmospheric electric field intensity threshold, and judging the risk of lightning stroke formed by the thundercloud in the area according to the measured ground atmospheric electric field intensity of the protection area; and (3) dispersing plasma into the atmospheric space in the protection area, and performing bidirectional charge neutralization with charges developed from the bottom of the thundercloud to the ground and charges escaped from the top of the ground, so that the development of the charges at the bottom of the thundercloud to the ground of the protection area is inhibited, the charges escaped from the top of the ground develop upwards, the formation of a lightning stroke condition is damaged, and the construction of a lightning stroke-free protection area is completed. The invention can achieve the purpose of no lightning stroke in the protection area and can avoid the formation of secondary lightning stroke.)

1. A lightning arrester without lightning strike, characterized in that: the method comprises the following steps:

the lightning cloud electric field detector (1) is used for detecting the atmospheric electric field strength value in a protection area in real time and providing actually measured data for the influence change of a lightning cloud cluster on a local atmospheric electric field;

the lightning risk recognizer (2) analyzes the atmospheric electric field intensity, compares the atmospheric electric field intensity with preset electric field intensity values in a multistage manner, and recognizes the risk of lightning approaching;

the power supply frequency conversion unit (3), the power supply conversion unit (3) adopts frequency conversion and frequency tracking adjustment, and the high-voltage generation unit (4) promotes high-frequency voltage to form a high-voltage strong electric field;

the ionization discharge cavity (5) is of a multi-space structure and a high-insulation medium barrier layer, and forms a micro-space strong electric field for ionization to continuously generate plasma (9);

the plasma conveying unit (6) rapidly conveys the plasma (9) generated by the ionization discharge cavity (5) to a divergent needle tube (8) by using airflow pressure difference, and the plasma is diverged to the atmosphere space from the top end of the divergent needle tube (8) made of the multi-channel high-polymer non-metal material;

the ionization discharge cavity is characterized by comprising an isolation gap (7), the isolation gap (7) isolates the ionization discharge cavity (5) from a divergent needle tube (8), and the ionization discharge cavity (5) is grounded through a device ground (10).

2. A lightning conductor for a non-lightning-strike according to claim 1, characterized in that: the plasma (9) diffused to the atmospheric space migrates to the bottom of the thundercloud and the top of the ground under the action of the thunderstorm electric field, and the formation of the thundercloud to ground discharge conditions is inhibited.

3. A lightning protection method without lightning introduction into the ground is characterized in that: the method comprises the following steps:

s1, monitoring the ground atmospheric electric field intensity value of the protection area in real time by the thundercloud electric field detector (1), and sending the monitored value to the lightning risk recognizer (2);

s2, the lightning risk identifier (2) compares the actually measured ground atmosphere electric field intensity of the protection area with a preset threshold value of the atmosphere electric field intensity, and judges the risk level of the influence of the thunderstorm cloud on the ground;

if the threshold value is exceeded, go to step S2;

if not, go to step S1;

s3, the power supply conversion unit (3) adopts frequency conversion and frequency tracking adjustment, and the high-voltage generation unit (4) promotes high-frequency voltage to form a high-voltage strong electric field;

s4, an ionization discharge cavity (5) constructs a multi-space structure, a high-insulation medium barrier layer is formed to form a micro-space strong electric field for ionization, plasma (9) is continuously generated, a plasma conveying unit (6) rapidly conveys the plasma (9) generated by the ionization discharge cavity (5) to a divergent needle tube (8) through airflow pressure difference, the plasma is dispersed to the atmospheric space from the top end of the divergent needle tube (8) made of a multi-channel high-polymer non-metal material and is dispersed to the atmospheric space in a protection area, so that charged particles and thundercloud are neutralized to charges developed to the ground, and charges escaping from the top end of the ground are shielded and neutralized, thereby inhibiting the development of lightning up-and-down leaders, destroying the development of the charges at the bottom of the discharge cloud between clouds to the ground of the protection area, and completing the construction of a lightning protection.

4. A lightning protection method according to claim 3, characterised in that: the step S2 specifically includes:

when the measured value of the electric field intensity is larger than the threshold value of the atmospheric electric field intensity, determining that thunderstorm clouds in a protection area are close to each other and the risk of lightning stroke is possible to occur;

otherwise, the likelihood of a lightning strike around the protected area is determined.

5. A lightning protection method according to any one of claims 3 or 4, characterised in that: the threshold value of the electric field intensity is 5 kv/m.

6. A lightning protection method according to claim 3, characterised in that: in the step S3: the charged particles dispersed to the atmospheric space are plasmas.

7. A method of lightning protection without lightning introduction to the ground according to claim 6, characterized in that: the plasma is obtained by means of ionizing air.

8. A lightning protection method according to claim 3, characterised in that: the operation of step S3 is as follows:

s31, obtaining plasma by adopting a dielectric barrier discharge technology and ionizing air;

s32, diffusing the plasma to the atmospheric space in the protective area by using airflow, and separating out ions in the plasma with opposite polarities to those carried by the thundercloud under the action of atmospheric electric field force;

and S33, continuing to diffuse the plasma with the polarity opposite to that of the electric charge carried by the thundercloud to the atmospheric space in the protection area by using the airflow, and neutralizing the electric charge carried by the thundercloud under the pushing action of the electric field force and the airflow, so that the development of the electric charge at the bottom of the thundercloud to the ground of the protection area is inhibited, and the formation of a discharge channel between the cloud and the ground is damaged.

9. A method for lightning protection without lightning introduction to the ground according to claim 8, characterized in that: the step S31 includes:

the generated plasma is blown away from the generating source by means of a gas flow.

10. A method for lightning protection without lightning introduction to the ground according to claim 9, characterized in that: the air flow velocity is not less than 25 m/s.

Technical Field

The invention relates to the technical field of lightning protection, in particular to a lightning protection device and a lightning protection method without lightning introduction into the ground.

Background

At present, the direct lightning protection at home and abroad is realized by adopting a lightning-protection mode of leading lightning into the ground and passively receiving lightning by a metal tip object, and discharging lightning current to soil around a protected object through a grounding body so as to achieve the purpose of direct lightning protection.

A large number of engineering lists show that the lightning protection method for introducing the lightning into the ground cannot play a lightning-free protection role, but can increase the frequency of lightning stroke near a lightning protection area; meanwhile, the lightning protection mode of leading the lightning into the ground can form secondary lightning stroke in the surrounding space, generate strong lightning stroke electromagnetic pulse radiation, induced overvoltage, counterattack and step voltage, and easily cause large-area damage of electronic equipment and the phenomenon of causing casualties.

Disclosure of Invention

Aiming at the problems that the lightning receiving mode in the prior lightning introducing and passive lightning protection technology is easy to cause high lightning stroke frequency and easily forms secondary lightning stroke, the invention provides a device and a method for protecting a direct lightning stroke, which destroy the formation of a discharge channel between clouds in a non-lightning introducing principle and an active lightning protection mode, realize the formation of no lightning stroke point in a lightning protection area, avoid the generation of secondary disaster caused by induction lightning in the lightning protection area and effectively solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention provides a lightning arrester and a method for non-lightning-induced ground, comprising the following steps:

the thundercloud electric field detector detects the atmospheric electric field strength value in a protection area in real time and provides actually measured data for the influence change of a thundercloud cluster on a local atmospheric electric field;

the lightning risk recognizer analyzes the atmospheric electric field intensity, compares the atmospheric electric field intensity with preset electric field intensity values in a multistage manner, and recognizes the risk of lightning approaching;

the power supply frequency conversion unit adopts frequency conversion and frequency tracking adjustment, and the high-voltage generation unit promotes high-frequency voltage to form a high-voltage strong electric field;

the ionization discharge cavity is of a multi-space structure and a high-insulation medium barrier layer, forms a micro-space strong electric field for ionization and continuously generates plasma;

the plasma conveying unit quickly conveys plasma generated by the ionization discharge cavity to a divergent needle tube by using airflow pressure difference, and the plasma is diverged to the atmospheric space from the top end of the divergent needle tube made of the multi-channel high-molecular non-metallic material;

and the isolation gap isolates the ionization discharge cavity from the divergent needle tube, and the ionization discharge cavity is grounded through the device.

As a preferred technical scheme of the invention, the plasma emitted to the atmospheric space migrates to the bottom of the thundercloud and the top object of the ground under the action of the thunderstorm electric field, so that the formation of the thundercloud to ground discharge condition is inhibited.

A lightning protection method without leading to the ground comprises the following steps:

s1, monitoring the ground atmospheric electric field intensity value of the protection area in real time by the thundercloud electric field detector, and sending the monitored value to the lightning risk recognizer;

s2, the lightning risk recognizer compares the actually measured ground atmospheric electric field intensity of the protection area with a preset threshold value of the atmospheric electric field intensity, and judges the risk level of the influence of the thunderstorm cloud on the ground;

if the threshold value is exceeded, go to step S2;

if not, go to step S1;

s3, the power supply conversion unit adopts frequency conversion and frequency tracking adjustment, and the high-voltage generation unit promotes high-frequency voltage to form a high-voltage strong electric field;

s4, the ionization discharge cavity is constructed into a multi-space structure, a high-insulation medium barrier layer is formed to form a micro-space strong electric field for ionization, plasma is continuously generated, the plasma conveying unit rapidly conveys the plasma generated by the ionization discharge cavity to a divergent needle tube through airflow pressure difference, the plasma is diverged to the atmospheric space from the top end of the divergent needle tube made of multi-channel high-polymer non-metal materials, and the plasma is diverged to the atmospheric space in the protection area, so that the charged particles and electric charges developed to the ground by thundercloud are neutralized, and the electric charges escaped from the tip of the ground are shielded and neutralized, thereby inhibiting the development of lightning up-down leader, destroying the electric charges at the bottom of the discharge cloud between clouds and developing to the ground of the protection area, and completing the.

As a preferred technical solution of the present invention, the step S2 specifically includes:

when the measured value of the electric field intensity is larger than the threshold value of the atmospheric electric field intensity, determining that thunderstorm clouds in a protection area are close to each other and the risk of lightning stroke is possible to occur;

otherwise, the likelihood of a lightning strike around the protected area is determined.

As a preferable technical scheme of the invention, the threshold value of the electric field intensity is 5 kv/m.

As a preferred embodiment of the present invention, in step S3: the charged particles dispersed to the atmospheric space are plasmas.

As a preferred embodiment of the present invention, the plasma is obtained by ionizing air.

As a preferred technical solution of the present invention, the step S3 specifically operates as follows:

s31, obtaining plasma by adopting a dielectric barrier discharge technology and ionizing air;

s32, diffusing the plasma to the atmospheric space in the protective area by using airflow, and separating out ions in the plasma with opposite polarities to those carried by the thundercloud under the action of atmospheric electric field force;

and S33, continuing to diffuse the plasma with the polarity opposite to that of the electric charge carried by the thundercloud to the atmospheric space in the protection area by using the airflow, and neutralizing the electric charge carried by the thundercloud under the pushing action of the electric field force and the airflow, so that the development of the electric charge at the bottom of the thundercloud to the ground of the protection area is inhibited, and the formation of a discharge channel between the cloud and the ground is damaged.

As a preferred embodiment of the present invention, the step S31 includes:

the generated plasma is blown away from the generating source by means of a gas flow.

As a preferable embodiment of the present invention, the air flow velocity is not less than 25 m/s.

One or more technical schemes provided by the invention at least have the following technical effects or advantages:

1. lightning is not attracted, and lightning stroke cannot be generated in a lightning protection area;

2. strong electromagnetic pulse caused by lightning stroke can not be generated, an electronic system can normally operate in all weather, and manual measures such as power off and cable pulling are not needed;

3. no strong current is discharged, and the movement of personnel in the lightning protection range can not be limited;

4. electric sparks cannot be generated, and the lightning protection device is safer when being used for lightning protection in sensitive places such as an oil depot and the like;

5. the lightning protection range is large, and the lightning protection which cannot be realized by the lightning rod can be realized;

6. the lightning protection effect does not depend on a lightning protection ground net, the ground foundation can meet the grounding requirement, the problem that a lightning rod needs a special lightning protection ground net is solved, and the engineering problems that the lightning rod grounding resistance requirement is difficult to meet in a high soil area and the like are solved.

In addition, the invention has the following other beneficial effects:

the invention is suitable for the lightning protection requirements under extreme natural environment conditions in different environments and different fields. Lightning protection of military sites and equipment facilities in the field of military affairs; lightning safety guarantee of flammable and explosive places; large scale locations for people to live: the personnel safety guarantee of places such as airports, ports and docks, park scenic spots, institutions and schools and the like. The mass of market demands is large, various demands of current lightning safety guarantee can be met, and the market prospect is wide.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic flow chart of a lightning arrester without lightning strike and a method thereof according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the present invention.