CN110867810A - Compressed air impact deicing device for high-voltage line - Google Patents
Compressed air impact deicing device for high-voltage line Download PDFInfo
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- CN110867810A CN110867810A CN201910986980.XA CN201910986980A CN110867810A CN 110867810 A CN110867810 A CN 110867810A CN 201910986980 A CN201910986980 A CN 201910986980A CN 110867810 A CN110867810 A CN 110867810A
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- voltage line
- compressed air
- rupture disk
- gas tube
- storage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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Abstract
The utility model provides a high-voltage line compressed air strikes defroster, belongs to high-voltage line protection equipment technical field, can solve current deicing method deicing speed slow, and efficiency is not high, exists danger, problem with high costs, including air compressor, the insulating high pressure resistant gas tube of one end confined, a plurality of storages and the insulating card that are used for saving compressed air, the one end of storage is equipped with the air inlet, and the other end is equipped with the rupture disk of non-metallic material, and the open end of gas tube is connected with air compressor's gas outlet, and the air inlet of storage is connected with the lateral wall of gas tube, and the other end that is equipped with the rupture disk of storage is located the high-voltage line directly over, and the one end and the gas tube of insulating card are connected, and. The invention can remove the ice coated on the high-voltage wire quickly and efficiently by deicing the high-pressure gas stored in the compressed air storage.
Description
Technical Field
The invention belongs to the technical field of high-voltage wire protection equipment, and particularly relates to a compressed air impact deicing device for a high-voltage wire.
Background
In recent years, with frequent occurrence of extreme weather, high-voltage lines are often subjected to icing trouble, and serious icing phenomena cause inclination, collapse, line breakage and insulator flashover of towers, so that accidents such as line tripping, power supply interruption and the like are caused, and great inconvenience is brought to social production and people's life. Therefore, various scholars at home and abroad carry out deep research on the icing phenomenon of the high-voltage line and provide various deicing methods. However, the prior art deicing equipment for high-voltage wires has the following defects:
1. in the deicing process, the equipment removes ice blocks on the high-voltage wire in a mode of striking and rolling by the movable manipulator, the deicing speed is slow, the efficiency is low, the high-voltage wire cannot be deiced in time, and the high-voltage wire can be broken.
2. If the explosive shock wave is adopted for deicing, under the condition of high voltage of millions of volts, the operation safety, the detonation reliability and the false detonation rate of the explosive are all required to be verified, and the damage to operators and equipment can be caused.
3. In addition, in the process of deicing by using explosive shock waves, the device cannot be reused, so that a large amount of material is consumed, and the cost is high.
The rupture disk device consists of a rupture disk, a clamp holder and the like. The rupture disk is an element which can be rapidly burst to play a role of pressure relief under the conditions of calibrated dry rupture pressure and designed dry rupture temperature, and the holder is a pair of matching parts which have the designed and given diameter of the discharge hole, can ensure the edge of the dry rupture disk to be firmly clamped and sealed and can ensure the rupture disk to obtain accurate dry rupture pressure.
The form of the rupture disk includes metal flat plate type, common positive arch type, slotted positive arch type and reverse arch type rupture disks, graphite rupture disk and the like.
The plate-type rupture disk is made of plastic metal or graphite, is a thin flat plate, and is clamped by a flange or directly pressed on a short pipe flange of a container by a bolt. The rupture element can be divided into a tensile failure type, a shear failure type, a bending failure type and the like according to the basic form of stress deformation when the rupture element breaks. The tensile failure type and bending failure type blasting elements are generally formed as circular thin sheets having the same thickness, while the shear failure type blasting elements are formed as circular thin sheets having a thick middle portion and thin edges, and are cut at the edges to be broken.
The rupture disk in the form is simple in structure and convenient to install, but the fatigue resistance of the rupture element is poor, and the rupture disk is generally only used for occasions with stable operation pressure and low pressure.
The arch-shaped metal blasting element is formed by hydraulic processing into a convex sheet, the clamping device is clamped by a countersunk screw and then is arranged on a flange of a connector pipe of a container, as shown in the figure, the blasting element with larger diameter and less strict requirement can be directly clamped by the flange of the connector pipe. But it is difficult to install, easy to install and slip under a low operating pressure. The arch type metal rupture disk can be classified into a tension type and a compression type according to the form of rupture. For a tensile rupture disk, the concave surface of the rupture element is positioned on the high-pressure side during action, the element is broken by the plastic tensile surface during explosion to compress the rupture disk, the convex surface of the rupture element is positioned on the high-pressure side during action, and the element is overturned and broken or falls off due to elastic compression instability during explosion. Therefore, the compression-type rupture disk is divided into a compression-induced rupture type and a compression-release type, wherein the former is turned over to touch the blade (or forehead tooth) after destabilization, or the latter is released due to destabilization and turning over due to groove cracking.
The common positive arch rupture disk is of a tensile failure type and is made of a single-layer plastic metal material. The concave side of the sheet faces the media and causes tensile failure after loading.
The slotted positive arch type blasting piece is also of a tensile failure type and is formed by combining two common positive arch type blasting elements with the same curvature. The concave side of the sheet faces the medium, one of the combined sheets contacting with the medium is made of metal or nonmetal material, the other sheet is made of metal material and is provided with a plurality of penetrating slots at the arched part, and the combined sheet causes tensile damage after being loaded.
The reverse arch rupture disk is of a compression failure type and is made of a single-layer plastic metal material. The convex side of the sheet faces the media and causes destabilizing damage after loading.
The designed dry burst pressure and actual burst pressure (measured by test) of the arch-shaped burst disk have smaller error than that of a flat plate, have higher fatigue resistance and can be used in high-pressure or ultrahigh-pressure occasions. But the structure is more complicated than a flat plate, the manufacturing cost is high, and the installation is not very convenient.
Disclosure of Invention
The invention aims at the problems that in the deicing process of the existing high-voltage wire deicing equipment, ice blocks on the high-voltage wire are removed in a mode of beating and rolling by a movable manipulator, the deicing speed is slow, the efficiency is low, the high-voltage wire cannot be deiced in time, and the high-voltage wire is possibly broken; the explosive shock wave is adopted for deicing, and under the condition of high voltage of millions of volts, the operation safety, the detonation reliability and the false detonation rate of the explosive are required to be verified, so that the explosive can cause damage to operators and equipment; the device can not be used repeatedly, which causes the problems of large consumption of materials and higher cost, and provides a high-voltage line compressed air impact deicing device.
The invention adopts the following technical scheme:
the utility model provides a high-voltage line compressed air strikes defroster, includes air compressor, the insulating high-pressure resistant gas tube of one end confined, a plurality of storages and the insulating card that are used for saving compressed air, the one end of storage is equipped with the air inlet, and the other end is equipped with non-metallic material's rupture disk, and the open end of gas tube is connected with air compressor's gas outlet, and the air inlet of storage is connected with the lateral wall of gas tube, and the other end of storage that is equipped with the rupture disk is located the high-voltage line directly over, and the one end and the gas tube of insulating card are connected, and the other end is connected with.
The cross section of one end of the storage provided with the rupture disk is conical.
The memories are arranged at equal intervals.
The insulation cards and the memories are alternately arranged.
The invention has the following beneficial effects:
1. the invention can remove the ice coated on the high-voltage wire quickly and efficiently by deicing the high-pressure gas stored in the compressed air storage.
2. The invention replaces the explosive with the method of air charging by the air compressor to generate high-pressure gas, and can effectively prevent the safety problem caused by the influence of high pressure on the explosive.
3. The invention can realize the repeated use of the device by replacing the rupture disk, thereby greatly saving materials and labor cost required by installation.
4. The invention can control the impact strength of compressed air by replacing rupture discs made of different materials, can ensure that the pressure can just meet the deicing requirement for icing with different thicknesses, and can reduce the impact of excessive pressure on electric wires as much as possible.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a memory according to the present invention;
wherein: 1-an air compressor; 2-an inflation tube; 3-a memory; 4-an insulating card; 5-high voltage line; 6-an air inlet; 7-rupture disk.
Detailed Description
The invention is further explained with reference to the accompanying drawings.
As shown in the figure, a high-voltage line compressed air strikes defroster, including air compressor 1, the insulating high-pressure resistant gas tube 2 of one end confined, a plurality of memory 3 and the insulating card 4 that are used for saving compressed air, the one end of memory 3 is equipped with air inlet 6, and the other end is equipped with non-metallic material's rupture disk 7, and the open end of gas tube 2 is connected with air compressor 1's gas outlet, and air inlet 6 and the lateral wall of gas tube 2 of memory 3 are connected, and the other end that is equipped with rupture disk 7 of memory 3 is located high-voltage line 5 directly over, and the one end of insulating card 4 is connected with gas tube 2, and the other end is connected with high-voltage line 5.
The cross section of one end of the storage 3 provided with the rupture disk 7 is conical.
The memories 3 are arranged at equal intervals.
The insulating cards 4 are arranged alternately with the memories 3.
Wherein, the gas-filled tube 2 is made of light, pressure-resistant and insulating materials. The rupture disk 7 of the memory 3 is made of a non-metal disk (film) material, so that safety accidents caused by flying disks generated by blasting can be prevented. The reservoir 3 can be installed with different types of rupture discs to control the pressure of the impact gas, and ice coatings with different thicknesses can be removed by air impact with the most appropriate pressure as far as possible.
The insulating clamp 4 fixes the gas-filled tube 2 and the storage 3 right above the high-voltage wire 5, so that the high-voltage gas can impact the ice coating on the high-voltage wire right below the high-voltage wire at the most appropriate distance.
The working process of the invention is as follows:
the air compressor 1 fills gas into the storage 3 through the gas filling pipe 2, the pressure in the storage 3 is controlled, the storage 3 explodes right above the high-voltage wire 5 when the internal pressure reaches the pressure-resistant critical value of the rupture disk 7, and the high-pressure gas stored in the storage 3 impacts the ice coating to enable the ice coating to fall off.
Wherein, the calculation of the rupture disk is as follows:
1. area of rupture disk
The rupture disk should have sufficient discharge area to guarantee that the pressure in the container can be released in time when the diaphragm breaks, and prevent the container from generating explosion by continuously generating pressure. In the case of the medium in the container, the discharge area of the rupture disk should be greater than or equal to the value calculated by the following formula.
The values of the gas characteristic coefficients X for different K values (gas adiabatic indices) are given in the table below.
2. Thickness of rupture disk
Wherein: initial thickness of S-rupture disk, Pb-a burst pressure determined at the design of the burst disk; sigmat b-the strength limit of the material at the working temperature; d the clamping diameter of the rupture disc.
Claims (4)
1. The utility model provides a deicer is strikeed to high-voltage line compressed air which characterized in that: including air compressor (1), the insulating high pressure resistant gas tube (2) of one end confined, a plurality of memory (3) and the insulating card (4) that are used for storing compressed air, the one end of memory (3) is equipped with air inlet (6), and the other end is equipped with rupture disk (7) of non-metallic material, and the open end of gas tube (2) is connected with the gas outlet of air compressor (1), and air inlet (6) and the lateral wall of gas tube (2) of memory (3) are connected, and the other end that is equipped with rupture disk (7) of memory (3) is located high-voltage line (5) directly over, and the one end and gas tube (2) of insulating card (4) are connected, and the other end is connected with high-voltage line (5).
2. A high-voltage line compressed air impact deicing apparatus as set forth in claim 1, wherein: the cross section of one end of the storage (3) provided with the rupture disk (7) is conical.
3. A high-voltage line compressed air impact deicing apparatus as set forth in claim 1, wherein: the memories (3) are arranged at equal intervals.
4. A high-voltage line compressed air impact deicing apparatus as set forth in claim 1, wherein: the insulation cards (4) and the memories (3) are alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986980.XA CN110867810B (en) | 2019-10-17 | 2019-10-17 | Compressed air impact deicing device for high-voltage line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986980.XA CN110867810B (en) | 2019-10-17 | 2019-10-17 | Compressed air impact deicing device for high-voltage line |
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| Publication Number | Publication Date |
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| CN110867810A true CN110867810A (en) | 2020-03-06 |
| CN110867810B CN110867810B (en) | 2020-11-24 |
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| CN201910986980.XA Active CN110867810B (en) | 2019-10-17 | 2019-10-17 | Compressed air impact deicing device for high-voltage line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595007A (en) * | 2021-07-15 | 2021-11-02 | 国网浙江省电力有限公司金华供电公司 | Deicing device and deicing method for power transmission line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01243812A (en) * | 1988-03-25 | 1989-09-28 | Ngk Insulators Ltd | Covered snow removing method and sleet removing device |
| DE202012009061U1 (en) * | 2012-09-13 | 2013-02-13 | Alexander Degtjarew | Installation for cleaning of wires of power cables from snow and ice. |
| CN103743296A (en) * | 2013-12-13 | 2014-04-23 | 中北大学 | Ice breaking device |
| CN205882637U (en) * | 2016-07-11 | 2017-01-11 | 瞿淑霜 | Transmission line microexplosion defroster |
| CN109818323A (en) * | 2019-03-25 | 2019-05-28 | 贵州电网有限责任公司 | A kind of blank cartridge for deicer with anti-induced detonation function |
-
2019
- 2019-10-17 CN CN201910986980.XA patent/CN110867810B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01243812A (en) * | 1988-03-25 | 1989-09-28 | Ngk Insulators Ltd | Covered snow removing method and sleet removing device |
| DE202012009061U1 (en) * | 2012-09-13 | 2013-02-13 | Alexander Degtjarew | Installation for cleaning of wires of power cables from snow and ice. |
| CN103743296A (en) * | 2013-12-13 | 2014-04-23 | 中北大学 | Ice breaking device |
| CN205882637U (en) * | 2016-07-11 | 2017-01-11 | 瞿淑霜 | Transmission line microexplosion defroster |
| CN109818323A (en) * | 2019-03-25 | 2019-05-28 | 贵州电网有限责任公司 | A kind of blank cartridge for deicer with anti-induced detonation function |
Non-Patent Citations (1)
| Title |
|---|
| 宋巍 等: "线性装药爆破去除输电线覆冰研究", 《高压物理学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595007A (en) * | 2021-07-15 | 2021-11-02 | 国网浙江省电力有限公司金华供电公司 | Deicing device and deicing method for power transmission line |
| CN113595007B (en) * | 2021-07-15 | 2023-12-05 | 国网浙江省电力有限公司金华供电公司 | Deicing device and deicing method for power transmission line |
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| CN110867810B (en) | 2020-11-24 |
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