阅读说明：本技术 一种定点出气方法 (Fixed-point air outlet method ) 是由 王嬿蕾 王锟 张清河 徐宇恒 彭斐 黄萍 李继强 王国锋 王巨丰 李冠华 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种定点出气方法,属于电力系统防雷技术领域,设置定点出气装置,定点出气装置包括钢壳体,钢壳体内放置产气燃料,钢壳体的一端设置有触发引脚,触发引脚贯穿钢壳体并与钢壳体内的产气材料接触设置,钢壳体的另一端设置有出气部位,出气部位的壳体相对钢壳体其它部分的壳体薄,钢壳体的包裹强度大于产气材料的最大气压,雷电触发信号经触发引脚后触产气材料,钢壳体内的产气材料瞬间燃烧产生灭弧气体,灭弧气体突破出气部位的壳体,灭弧气体从出气部位喷出熄灭电弧。本方法可以提升固相灭弧防雷装置安全能力,因为在外部结构没有强化的条件下,不会损坏外部结构。(The invention discloses a fixed point gas outlet method, which belongs to the technical field of lightning protection of an electric power system and is provided with a fixed point gas outlet device, wherein the fixed point gas outlet device comprises a steel shell, gas-generating fuel is placed in the steel shell, one end of the steel shell is provided with a trigger pin, the trigger pin penetrates through the steel shell and is in contact with gas-generating material in the steel shell, the other end of the steel shell is provided with a gas outlet part, the shell of the gas outlet part is thinner than shells of other parts of the steel shell, the wrapping strength of the steel shell is greater than the maximum air pressure of the gas-generating material, a thunder trigger signal touches the gas-generating material after passing through the trigger pin, the gas-generating material in the steel shell instantaneously burns to generate arc-extinguishing gas, the. The method can improve the safety capability of the solid-phase arc extinguishing lightning protection device, and the external structure cannot be damaged under the condition that the external structure is not strengthened.)

1. A fixed point gas outlet method is characterized in that a fixed point gas outlet device is arranged, the fixed point gas outlet device comprises a steel shell (2), gas-producing fuel is placed in the steel shell (2), a trigger pin (1) is arranged at one end of the steel shell (2), the trigger pin (1) penetrates through the steel shell (2) and is arranged in contact with gas-producing materials in the steel shell (2), a gas outlet part (3) is arranged at the other end of the steel shell (2), the shell of the gas outlet part (3) is thin relative to the shells of other parts of the steel shell (2), the wrapping strength of the steel shell (2) is larger than the maximum air pressure of the gas-producing materials, a thunder trigger signal contacts the gas-producing materials after passing through the trigger pin (1), the gas-producing materials in the steel shell (2) are instantly combusted to generate arc-extinguishing gas, the arc-extinguishing gas breaks through the shells of the gas outlet part (3).

2. A fixed-point outgassing method according to claim 1, wherein: the steel shell (2) is a closed cylindrical steel shell (2), the thickness of the steel shell is 2-5mm, and the diameter of the steel shell is 10-15 mm.

3. A fixed-point outgassing method according to claim 1, wherein: the air outlet part (3) is of a circular hole structure, and the diameter of the circular hole structure is 5-6 mm.

4. A fixed-point outgassing method according to claim 1, wherein: the outside of the position of giving vent to anger (3) is provided with directional bucket (5) of outside extension, and the length of directional bucket (5) is 5-8mm, and the position of giving vent to anger (3) of steel casing (2) side is inside to be provided with aluminum plate (4), and the diameter of aluminum plate (4) is the same with steel casing (2) internal diameter, and the thickness of aluminum plate (4) is 2-5mm, and aluminum plate (4) and steel casing (2) between be connected for the suppression to form or weld and form, form a confined space, and the inside gas material of producing of placing of confined space.

5. A fixed-point outgassing method according to claim 1, wherein: the fixed point gas outlet device comprises a first trigger signal input terminal (11A), a wrapping layer (12A), a first air pill base (13A), a first air pill (14A) and a first air injection hole (15A), wherein the first trigger signal input terminal (11A) is arranged on the first air pill base (13A), the first air pill (14A) is arranged on one side of the first air pill base (13A), the wrapping layer (12A) is wrapped on the outer sides of the first air pill base (13A) and the first air pill (14A) and is arranged in a laminating manner, a first air injection hole (15A) is formed in the laminating position of the wrapping layer (12A) and the first air pill (14A), the wrapping layer (12A) is arranged to be a hard layer, the first air pill (14A) is triggered to burn, the side wall of the wrapping layer (12A) radially restrains the first air pill (14A), the two ends axially restrain the first air pill (14A), and gas generated by the first air pill (14A) is ejected from the first gas ejecting hole (15A).

6. A fixed-point outgassing method according to claim 1, wherein: the fixed point gas outlet device comprises a second trigger signal input terminal (11B), a limiting frame (12B), a first sleeve (13B), a second gas pill base (14B), a second gas pill (15B) and a second gas injection hole (16B), wherein the second trigger signal input terminal (11B) is arranged on the second gas pill base (14B), the second gas pill base (14B) is connected with the second gas pill (15B) and is arranged, the first sleeve (13B) is sleeved on the outer side of the second gas pill (15B), the limiting frame (12B) is clamped on the outer sides of the first sleeve (13B) and the second gas pill base (14B), the limiting frame (12B) is provided with the second gas injection hole (16B), the second gas pill (15B) is triggered to burn to generate gas, the first sleeve (13B) generates radial constraint on the gas, and the limiting frame (12B) generates axial constraint on the gas, the combustion speed in the second gas pill (15B) is accelerated, the gas is sprayed out from the second gas spraying hole (16B), and the limiting frame (12B) and the first sleeve (13B) are both hard structures.

7. A fixed-point outgassing method according to claim 1, wherein: the fixed point gas outlet device comprises a third trigger signal input terminal (11C), a limiting barrel (12C), a second sleeve (13C), a third gas pill base (14C), a third gas pill (15C) and a third gas injection hole (16C), wherein the third trigger signal input terminal (11C) is arranged on the third gas pill base (14C), the third gas pill base (14C) is connected with the third gas pill (15C) and is arranged, the second sleeve (13C) is sleeved on the outer side of the third gas pill (15C), the limiting barrel (12C) is clamped on the outer sides of the second sleeve (13C) and the third gas pill base (14C), the limiting barrel (12C) is provided with the third gas injection hole (16C), the third gas pill (15C) is triggered to burn, the second sleeve (13C) radially restrains the third gas pill (15C), and the limiting barrel (12C) axially restrains the third gas pill (15C), and gas generated by the third gas pill (15C) is ejected from the gas ejecting hole (16C), and the limiting barrel (12C) and the second sleeve (13C) are both hard structures.

8. A fixed-point outgassing method according to claim 1, wherein: the fixed-point gas outlet device comprises a fourth trigger signal input terminal (11D), an upper frame body (12D), a third sleeve (13D), a fourth gas pill base (14D), a fourth gas pill (15D), a lower frame body (16D) and a fourth gas orifice (17D), wherein the fourth trigger signal input terminal (11D) is arranged on the fourth gas pill base (14D), the fourth gas pill base (14D) is connected with the fourth gas pill (15D), the third sleeve (13D) is sleeved on the outer side of the fourth gas pill (15D), the upper frame body (12D) and the lower frame body (16D) are detachably connected, the upper frame body (12D) and the lower frame body (16D) are clamped on the outer sides of the third sleeve (13D) and the fourth gas pill base (14D), the fourth gas orifice (17D) is arranged on the lower frame body (16D), and the fourth gas pill (15D) is triggered to combust to generate gas, the third sleeve (13D) generates radial constraint on gas, the upper frame body (12D) and the lower frame body (16D) combine to generate axial constraint on the gas, the fuel combustion speed in the fourth gas pill (15D) is increased, the gas is sprayed out from the gas spraying holes (17D), and the upper frame body (12D), the lower frame body (16D) and the third sleeve (13D) are all set to be hard structures.

Technical Field

The invention relates to the technical field of lightning protection of power systems, in particular to a fixed-point air outlet method.

Background

Lightning protection of a power transmission line is always important content of lightning protection work of a power department, and lightning faults are still one of important factors influencing the safety of a power grid. The lightning stroke of the transmission line causes the flashover of a line insulator, and the following power frequency current damages an insulator string and hardware fittings, thereby causing the accidents of burning the insulator string and burning a lead.

The existing power transmission line lightning protection device mainly uses a power transmission line lightning protection gap device, but the lightning protection key of the existing lightning protection gap device is to use a gas generator to perform arc extinguishing treatment. However, the arc extinguishing effect of the existing gas generating device needs to be improved, the direction of the gas sprayed by the gas generating device is not controllable, the pressure of the sprayed gas is not high enough, the spraying time is short, and the gas generating material cannot be completely combusted, so that the arc cannot be completely sprayed out.

After years of research, continuous research processes and practical application of products, it is found that for some special occasions and higher voltage levels, larger arc extinguishing gas pressure is needed, and therefore a fixed-point gas outlet method is provided.

Disclosure of Invention

The invention aims to provide a fixed-point gas outlet method to solve the technical problem that the existing gas generating device is poor in arc extinguishing effect.

A fixed point gas outlet method is provided with a fixed point gas outlet device, the fixed point gas outlet device comprises a steel shell, gas-generating fuel is placed in the steel shell, one end of the steel shell is provided with a trigger pin, the trigger pin penetrates through the steel shell and is arranged in contact with gas-generating material in the steel shell, the other end of the steel shell is provided with a gas outlet part, the shell of the gas outlet part is thinner than the shell of other parts of the steel shell, the wrapping strength of the steel shell is larger than the maximum gas pressure of the gas-generating material, a thunder trigger signal touches the gas-generating material after passing through the trigger pin, the gas-generating material in the steel shell instantaneously burns to generate arc-extinguishing gas, the arc-extinguishing gas breaks through the.

Furthermore, the steel shell is a closed cylindrical steel shell, the thickness of the steel shell is 2-5mm, and the diameter of the steel shell is 10-15 mm.

Furthermore, the air outlet part is of a circular hole structure, and the diameter of the circular hole structure is 5-6 mm.

Furthermore, an outward extending directional barrel is arranged on the outer side of the air outlet part, the length of the directional barrel is 5-8mm, an aluminum plate is arranged inside the air outlet part side of the steel shell, the diameter of the aluminum plate is the same as the inner diameter of the steel shell, the thickness of the aluminum plate is 2-5mm, the aluminum plate and the steel shell are connected through pressing or welding to form a sealed space, and an air generating material is placed inside the sealed space

Further, fixed point air outlet means includes first trigger signal input terminal, parcel layer, first pellet base, first air shot and first fumarole, first trigger signal input terminal sets up on first pellet base, first air shot sets up the one side at first pellet base, parcel layer parcel is in the outside of first pellet base and first air shot to the laminating setting, the laminating department of parcel layer and first air shot is provided with first fumarole, the parcel layer sets up to hard layer, first air shot is triggered the burning, the lateral wall of parcel layer carries out radial restraint to first air shot, and the both ends carry out axial restraint to first air shot, and the gas that first air shot produced is followed first fumarole blowout.

Further, fixed point gas outlet device includes second trigger signal input terminal, spacing frame, first sleeve, second air shot base, second air shot and second fumarole, second trigger signal input terminal sets up on the second air shot base, the setting is connected with the second air shot to the second air shot base, the outside at the second air shot is established to first sleeve cover, spacing frame card cover is in the outside of first sleeve and second air shot base, be provided with the second fumarole on the spacing frame, the second air shot is triggered the burning and is produced gas, first sleeve produces radial restraint to gas, and spacing frame produces axial restraint to gas, and burning speed accelerates in the second air shot, and gas is from the blowout of second fumarole, spacing frame and first sleeve all set up to the stereoplasm structure.

Further, fixed point air outlet device includes third trigger signal input terminal, spacing bucket, second sleeve, third air pill base, third air pill and third fumarole, third trigger signal input terminal sets up on the third air pill base, the setting is connected with the third air pill to the third air pill base, the outside at the third air pill is established to the second sleeve cover, spacing bucket card cover is in the outside of second sleeve and third air pill base, be provided with the third fumarole on the spacing bucket, the third air pill is triggered the burning, the second sleeve carries out radial restraint to the third air pill, spacing bucket carries out axial restraint to the third air pill, and the gas that the third air pill produced is from the fumarole blowout, spacing bucket and second sleeve all set up to the stereoplasm structure.

Furthermore, the fixed point gas outlet device comprises a fourth trigger signal input terminal, an upper frame body, a third sleeve, a fourth balloon base, a fourth balloon, a lower frame body and a fourth gas orifice, the fourth trigger signal input terminal is arranged on a fourth balloon base, the fourth balloon base is connected with a fourth balloon, the third sleeve is sleeved outside the fourth balloon, the upper frame body is detachably connected with the lower frame body, the upper frame body and the lower frame body are clamped and sleeved at the outer sides of the third sleeve and the fourth balloon base, the fourth air injection hole is arranged on the lower frame body, the fourth gas pill is triggered to combust to generate gas, the third sleeve generates radial restraint to the gas, the upper frame body and the lower frame body are combined to generate axial restraint on gas, the combustion speed of fuel in the fourth gas pill is accelerated, the gas is sprayed out from the gas spraying holes, and the upper frame body, the lower frame body and the third sleeve are all set to be hard structures.

By adopting the technical scheme, the invention has the following technical effects:

1. the method can improve the safety capability of the solid-phase arc extinguishing lightning protection device, and the external structure cannot be damaged under the condition that the external structure is not strengthened.

2. The method enhances the gas pressure by adopting the gas pill shell made of steel materials, so that the gas-producing fuel is combusted more fully, and the arc extinguishing effect is further improved.

3. The method has the advantages that the weak point is arranged on the steel shell, so that strong airflow generated after gas production fuel is fully combusted is directionally sprayed out from the weak point, the direction of the sprayed air is controllable, the sprayed airflow is concentrated, the time of the sprayed air for arc extinction is longer, the reaction time of the arc extinction is faster, and the effect of arc extinction is better.

4. The fixed-point gas outlet device is characterized in that the sum of the basic pressure of the gas pill and the increment pressure of the wrapping layer is set to be larger than the critical pressure of the gas pill fracture, so that the gas-producing material in the gas pill cannot explode after being completely combusted, the hard layer wrapping layer wraps the gas pill base and the gas pill, the wrapping layer radially and axially restrains gas flow, the increment pressure in the wrapping layer is rapidly increased, the combustion speed of the gas-producing material (gunpowder) in the gas pill is higher, when the gas pressure is higher than the material bounding layer fracture limit pressure at the gas injection hole, high-pressure gas is injected from the gas injection hole, the aperture of the gas injection hole is reduced, the bending moment of the material at the gas injection hole is increased, the gas pressure generated inside is increased, the gas injection direction is controllable, the gas injection arc extinguishing time is longer, the arc extinguishing reaction time is shorter, and the arc extinguishing effect is better; meanwhile, the sealing assembly is simple in structure, strong airflow is well prevented from leaking, the generated strong airflow can be guaranteed to act on the electric arc in a maximized mode, the switching mechanism and the sealing structure are ingeniously combined into a whole, the structure is simple, the connection relation is not complex, and the reliability of lightning protection and arc extinguishing is greatly enhanced. When the gas generating element generates strong airflow in the turntable, the sealing interface connecting assembly at the top of the arc extinguishing cylinder can move up and down (vibrate) under the action of elasticity to carry out sealing contact, and ensure that the left and right deviation can not occur, thereby improving the reliability of lightning protection and arc extinguishing, and simultaneously improving the safety of arc extinguishing and lightning protection by the sealing assembly structure

Drawings

Fig. 1 is a schematic view of a first outgassing method.

Fig. 2 is a bottom schematic view of a first venting mode.

Fig. 3 is a schematic view of a second air outlet method.

Fig. 4 is a bottom schematic view of a second venting mode.

Fig. 5 is a schematic view of a third venting manner.

Fig. 6 is a bottom schematic view of a third venting mode.

Fig. 7 is a cross-sectional view of three shapes of a first structure of the fixed-point air outlet device of the invention.

Fig. 8 is a cross-sectional view of four shapes of a second structure of the fixed-point gas outlet device of the invention.

Fig. 9 is a cross-sectional view of a third structure of a fixed-point gas outlet device according to the present invention.

Fig. 10 is a cross-sectional view of four shapes of a fourth structure of the fixed-point gas outlet device according to the present invention.

FIG. 11 is a comparison graph of the effect of the fixed point gas outlet device of the present invention and the arc extinguishing effect of the common gas generator

Reference numbers in the figures: 1-trigger pin; 2-a steel shell; 3-air outlet part; 4-an aluminum plate; 5-orientation barrel; 11A-first trigger signal input terminal; 12A-a wrapping layer; 13A-first bolus base; 14A-first qi pellet; 15A-a first gas orifice; 16A-bottom wall; 11B-a second trigger signal input terminal; 12B-a limit frame; 13B-a first sleeve; 14B-balloon base; 15B-second Qiwan; 16B — a second gas injection hole; 17B-gasket; 18B-a base support; 11C-a third trigger signal input terminal; 12C-a limit barrel; 13C — a second sleeve; 14C-balloon base; 15C-third qi pill; 16C — a third gas orifice; 17C-bottom wall; 18C-gasket; 11D-fourth trigger signal input terminal; 12D-upper frame; 13D-a third sleeve; 14D-balloon base; 15D-fourth Qiwan; 16D-lower frame; 17D-a fourth gas orifice; 18D-gasket pad; 19D-frame connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

Embodiments of the present invention are further described in accordance with the foregoing description of principles and with reference to fig. 1-11: