CN209591690U - A kind of comprehensive arc extinguishing insulator of semi-enclosed recoil - Google Patents

Abstract

The utility model discloses a kind of comprehensive arc extinguishing insulator of semi-enclosed recoil, including is mounted on power transmission line by connection gold utensil and makes somebody a mere figurehead insulator body on cross arm of tower；It is hollow inside the insulator body, and is longitudinally equipped with insulating barrier along insulator body and to form two independent spark chambers inside insulator body；Recoiling device is equipped with inside the spark chamber upper end in left side, lower end is equipped with recoil opening；The top of the recoiling device is equipped with top electrode；Jet-stream wind device is equipped with inside the spark chamber lower end on right side, upper end is equipped with the air-flow spout that outside side extends；The bottom of the jet-stream wind device is equipped with lower electrode；The insulating barrier is equipped with wall electrode.The device can effectively prevent flashover problem, reduce power equipment tripping rate with lightning strike, protect electric power facility, improves electric network reliability, is conducive to electricity safety production.

Description

A kind of comprehensive arc extinguishing insulator of semi-enclosed recoil

Technical field

The utility model belongs to the insulator of power transmission and distribution overhead transmission line, and it is exhausted to be related to a kind of comprehensive arc extinguishing of semi-enclosed recoil Edge.

Background technique

Insulator is a kind of special insulation control, can be played an important role in overhead transmission lines.Between one's early years absolutely Edge is chiefly used in electric pole, and the one end for being slowly developed in high type high-tension bus-bar connection tower has hung the insulator of many plate-likes, it is In order to increase creepage distance, usually it is made of glass or ceramics.Insulator should not occur due to environment and electric load condition Change caused various electromechanical stress and fail, otherwise insulator would not generate great effect, will damage whole route Use and service life.

The major function of insulator is to realize electric insulation and be mechanically fixed, and has various electrically and mechanically performances for this provision Requirement.For the development of composite insulator, technique, material, test play, problem of aging, mechanical performance, brittle failure problem, Cluster parachute knot draws, High aititude problem etc., and wherein problem of aging seriously affects the resistance to Lei Shuiping of transmission line of electricity, and serious conditions make Insulator occurs flashover, single-phase earthing fault occurs according at trip accident.

Utility model content

The purpose of this utility model is that being directed to the deficiencies in the prior art, it is comprehensive to provide a kind of semi-enclosed recoil Close arc extinguishing insulator.

To achieve the goals above, the technical solution of the utility model is as follows:

A kind of comprehensive arc extinguishing insulator of semi-enclosed recoil, including power transmission line is mounted on by connection gold utensil and makes somebody a mere figurehead shaft tower cross Insulator body in load；It is hollow inside the insulator body, and makes along insulator body is longitudinal equipped with insulating barrier It obtains and forms two independent spark chambers inside insulator body；Recoiling device, lower end are equipped with inside the spark chamber upper end in left side It is open equipped with recoil；The top of the recoiling device is equipped with top electrode；Injection gas is equipped with inside the spark chamber lower end on right side Device is flowed, upper end is equipped with the air-flow spout that outside side extends；The bottom of the jet-stream wind device is equipped with lower electrode；It is described Insulating barrier be equipped with wall electrode.

The further explanation of the utility model, the recoiling device are mainly made of recoil tube and arrester；Described Recoil tube is open at one end, and arrester is fixedly mounted in the other end, and recoiling device is made to become inner hollow, open at one end, another end seal The semiclosed pipe fitting closed；The arrester and top electrode is electrically connected.

The further explanation of the utility model, the opening of the recoil tube, which is equipped with, leads arc ring I.

The further explanation of the utility model, the jet-stream wind device is mainly by jet-stream wind generating device and injection Cylinder composition；Be inside the spraying canister it is hollow, spraying canister is open at one end, and the other end is fixedly mounted on jet-stream wind generating device On, the jet-stream wind generating device bottom and lower electrode are electrically connected.Jet-stream wind generating device can use inventor First invention achievement can also be with such as application No. is 201420140125.X, 201821264900.7,201811319479.X Using existing jet-stream wind arc-control device product etc. currently on the market.

The further explanation of the utility model, the spraying canister opening are equipped with and lead arc ring II.

The further explanation of the utility model, the wall electrode is using electrode slice or compression arc-extinguishing tube or recoil Pipe.

The further explanation of the utility model, the inside of the compression arc-extinguishing tube, which is equipped with, leads arc ball.

The further explanation of the utility model, the insulator body outer surface are equipped with several skirts.The insulator Increase skirt outside structure, enhances creepage distance, avoid electric arc creeping discharge.

The further explanation of the utility model, the air-flow spout that the outside side extends Open Side Down inclination.

The further explanation of the utility model, arrester and leads arc ring I by the metal or nonmetallic materials structure of strong electric conductivity At, such as such as copper, aluminium, tungsten, nickel, iron, graphite material；Recoil tube is made of the nonconductive metal material of high-intensitive, strong pressure resistance, such as The non-conducting materials such as ceramal, rare-earth ceramic, Graphene-ceramic composite material, organic ceramic.

The further explanation of the utility model, lower electrode and leads arc ring II by the metal or nonmetallic materials structure of strong electric conductivity At, such as copper, aluminium, tungsten, nickel, iron, graphite material；Spraying canister is made of the nonconductive metal material of high-intensitive, strong pressure resistance, is such as closed The non-conducting materials such as golden ceramics, rare-earth ceramic, Graphene-ceramic composite material, organic ceramic.

The principles of the present invention:

The Lightning Over-voltage generated when lightning stroke shaft tower or lightning conducter preferentially punctures parallel port protection insulator chain, causes absolutely Edge flashover low-pressure end has thunder-strike current process, and lightning current will pass through the top electrode of insulator low-pressure end.Electric arc can be by upper Electrode is pulled on the left of the present apparatus inside spark chamber, will receive truncation inside recoiling device into the electric arc in the spark chamber of left side Double action is truncated with outside, so that most of arc extinction.Remaining electric arc enters in the spark chamber of right side along wall electrode, wherein The spraying canister opening of jet-stream wind device in the spark chamber of right side leads arc ring II, in the effect for leading arc ring II and wall electrode Under, remaining electric arc enters the jet-stream wind generating device in the spark chamber of right side, and the arc current of circulation triggers gas The induction power supply of device can generate an induced current, and induced current will trigger the movement of arc extinguishing gas ball, generate high speed and high pressure gas Electric arc is acted on, remaining electric arc is blown and electric arc can not restrike.

When transmission line of lightning strike or route generation lightning induced voltage, insulator arc-over high-voltage end is caused to begin with lightning stroke electricity Stream passes through, and the lower electrode that the electric arc of formation can be connected by the present apparatus with high-voltage end is pulled on the right side of device in spark chamber, The induction power supply of the current trigger gas generator to circulate in lower electrode can generate an induced current, and induced current will trigger The movement of arc extinguishing gas ball generates high speed and high pressure gas and acts on electric arc, and most of electric arc is directly blown and electric arc can not restrike.Its Remaining electric arc is entered in the spark chamber of left side by wall electrode, and the recoiling device recoil tube opening in the spark chamber of left side leads arc ring, Under the action of leading arc ring and wall electrode, the electric arc into recoiling device will receive the truncation of recoiling device inside and external truncation pair Recast is used, so that electric arc is truncated.

When electric arc is from when leading arc ring and entering recoiling device, since electric arc is that have elastically-deformable plasma, will receive The limitation of recoil tube wall, when electric arc enters recoil tube beginning, density, speed, temperature increase, and lead to the increase of overpressure, most Generate eventually and press quick-fried effect, electric arc impact recoils the arrester of bottom of the tube, electric arc blocking recoil bottom of the tube by reversed elastic force, 180 ° of change occurs for the direction of advance of most of electric arc.The electric arc to rebound back is since speed, density, pressure are bigger, cavity effect Outer electric arc should be acted in inlet, the electric arc at recoil pipe port is caused to generate truncation.

When electric arc enters back flush line from arrester, since recoil tube is very thin, coarse thunder and lightning electric arc is entering recoil Guan Shihui shape becomes elongated electric arc, is full of entire pipeline, and in the process, air makes because of temperature raising under the influence of electric arc Air in pipeline expand and generates active force and ultimately forms the quick-fried effect of pressure, passing through for subsequent electric arc is blocked, to electric arc generation Truncation.

The utility model has the advantage that as follows:

1. jet-stream wind device is that effective extinguishing electric arc can be achieved for different electric arc directions.

2. the backsurging principle that recoiling device has can make extinguishes electric arc ability double.

3. in the spark chamber containing jet-stream wind device the hyperbar of interior generation can accelerating medium recovery strength, make electric arc Faster extinguish.

4. the wall electrode in insulating barrier center can effectively disperse arc energy, electric arc is made to be easier to extinguish.

5. use scope is wide, do not influenced by wire arrangements, shaft tower tower, polar effect.

6. electric arc is in impact arc extinguishing section arc extinguishing and destroys power frequency and builds arc channel, and guarantees that protective relaying device is not examined Feel.

7. once mounting can be reused for a long time, it is only necessary to regularly replace jet-stream wind device and recoiling device, operation at This is low.

8. effectivelying prevent insulator arc-over problem, power equipment tripping rate with lightning strike is reduced, protects electric power facility, improves power grid Reliability is conducive to electricity safety production.

9. the utility model is compared with multi-chamber series of products, have the advantage that

(1) durability compares.The gas exhausted material of multi-chamber addition is to need to toast under hot conditions to produce gas, then in high temperature Gas exhausted material under environment in multi-chamber arc-control device is consumed, and the durability of multi-chamber is bad；And what the utility model used Elements Of Expense is not present in perfusion recoil material and injection apparatus material, does not need through gas production mechanism arc extinguishing, durability is preferable.

(2) arc quenching effect compares.The indoor every two adjacent electrode of multi-cavity electric arc by when generate condensation polar effect, i.e., Electric arc temperature under adjacent electrode is lower, and low temperature electric arc baking gas exhausted material makes production gas ineffective, condensation polar effect and height Temperature baking produces the contradiction that gas is formed between arc extinguishing and makes arc quenching effect bad；And mechanism is perfused using narrow pipe in the utility model Arcing mechanisms are blown with gas is generated using the explosion of gas ball, electric arc collision generates huge arc extinguishing energy, with electric arc itself energy Amount and collision arc extinguishing and arc extinguishing gases medium recovery it is fast, arc reignition can be effectively prevent, keep arc quenching effect splendid.

(3) arc extinguishing remolding sensitivity compared with.According to above-mentioned durability and arc quenching effect, since multi-chamber durability is by high temperature It influences, and produces gas and condensed polar effect by electrode, is i.e. low temperature electric arc baking ability is extremely low, and condensation polar effect and high-temperature baking produce gas The contradiction between arc extinguishing is formed, it is bad that there are arc quenching effects when small electric arc passes through, and only passes through lower multi-chamber ability in larger electric arc It can correctly act, and big electric arc circulation will lead to relay protection movement and there is trip accident, therefore the sensitivity of multi-chamber arc extinguishing is not It is ideal；And the either big electric arc of the utility model or small electric arc exist, it is only necessary to which electric arc, which enters the utility model, to be generated The gentle ball explosion of mechanism is perfused and produces gas arc extinguishing mechanism, sensitivity is higher.

(4) method of operation compares.According to above-mentioned sensitivity analysis, the movement of multi-chamber is by system operation mode, short circuit The external factors such as electric current influence, and there are arc extinguishing blind areas, so that multi-chamber lightning protection matching is very difficult；And the utility model is not present The external factors such as system operation mode, short circuit current influence.

Detailed description of the invention

Fig. 1 is the insulator mounting means structural schematic diagram of the utility model；

Fig. 2 is the interior insulator structural schematic diagram of an embodiment of the present invention；

Fig. 3 is the utility model recoiling device structural schematic diagram；

Fig. 4 is the jet-stream wind apparatus structure schematic diagram of the utility model；

Fig. 5 is the interior insulator structural schematic diagram of another embodiment of the utility model；

Fig. 6 is the interior insulator structural schematic diagram of the utility model another embodiment；

Wherein, above-mentioned each icon note and its corresponding component names are as follows:

1- insulator body, 2- top electrode, electrode under 3-, 4- recoiling device, 5- jet-stream wind device, 6- wall electrode, 7- Insulating barrier, the skirt 8-, 9- air-flow spout, 10- spark chamber, 41- recoil tube, 42- arrester, 411- lead arc ring I, 51- injection Air-stream generating device, 52- spraying canister, 521- lead arc ring II.

Specific embodiment

In conjunction with the preferred embodiment and its attached drawing is further unrestricted detailed to technical solutions of the utility model work Explanation.

Embodiment 1:

As in Figure 2-4, the comprehensive arc extinguishing insulator of a kind of semi-enclosed recoil, including transmission of electricity is mounted on by connection gold utensil Insulator body 1 on coil holder sky cross arm of tower；It is hollow inside the insulator body 1, and longitudinal along insulator body 1 Make to form two independent spark chambers 10 inside insulator body 1 equipped with insulating barrier 7；Inside the spark chamber upper end in left side Equipped with recoiling device 4, lower end is equipped with recoil opening；The top of the recoiling device 4 is equipped with top electrode 2；Arc extinguishing on right side Jet-stream wind device 5 is equipped with inside chamber lower end, upper end is equipped with the air-flow spout 9 that outside side extends；The jet-stream wind dress The bottom for setting 5 is equipped with lower electrode 3；The insulating barrier 7 is equipped with wall electrode 6.

The recoiling device 4 is mainly made of recoil tube 41 and arrester 42；The recoil tube 41 is open at one end, separately Arrester 42 is fixedly mounted in one end, and recoiling device 4 is made to become inner hollow, open at one end, the closed semiclosed pipe fitting of the other end； The arrester 42 and top electrode 2 is electrically connected.

The jet-stream wind device 5 is mainly made of jet-stream wind generating device 51 and spraying canister 52；The injection Cylinder 52 inside be it is hollow, spraying canister 52 is open at one end, and the other end is fixedly mounted on jet-stream wind generating device 51, the spray Emanate 51 bottom of flow generating apparatus and lower electrode 3 is electrically connected.The wall electrode 6 uses electrode slice.

Embodiment 2:

The present embodiment the difference from embodiment 1 is that: 1 outer surface of insulator body be equipped with several skirts 8.

Embodiment 3:

The present embodiment the difference from example 2 is that: the opening of the recoil tube 41 be equipped with lead arc ring I 411；52 opening of spraying canister is equipped with and leads arc ring II 521.

Embodiment 4:

As shown in fig. 6, the present embodiment the difference from example 2 is that: the wall electrode 6 use recoil tube.Recoil tube The semiclosed tube body of lightning pole is connect for open at one end, other end installation.

Embodiment 5:

As shown in figure 5, the present embodiment and the difference of embodiment 4 are: the wall electrode 6 is using compression arc-extinguishing tube.Institute The inside for the compression arc-extinguishing tube stated is equipped with and leads arc ball.

Embodiment 6:

The present embodiment and the difference of embodiment 4 are: Open Side Down inclines for the air-flow spout 9 that the outside side extends Tiltedly.

In practical applications, as shown in Figure 1, the present apparatus is mounted on the aerial cross arm of tower of power transmission line, top electrode passes through company It connects fitting to be connected with cross-arm, lower electrode is connected with overhead transmission line by connection gold utensil.

When lightning stroke shaft tower or transmission line of electricity lightning conducter, insulator arc-over low-pressure end is caused to begin with thunder-strike current by exhausted Edge low-pressure end top electrode.Electric arc can be pulled on the left of the present apparatus inside spark chamber, into left side arc extinguishing by top electrode Intracavitary electric arc will receive truncation and external truncation double action inside recoiling device, so that most of arc extinction.Remaining electricity Arc enters in the spark chamber of right side along wall electrode, wherein the spraying canister opening of the jet-stream wind device in the spark chamber of right side has one Arc ring II is led, under the action of leading arc ring II and wall electrode, remaining electric arc enters the jet-stream wind hair in the spark chamber of right side The induction power supply of generating apparatus, the arc current triggering gas generator of circulation can generate an induced current, and induced current will The movement of arc extinguishing gas ball is triggered, high speed and high pressure gas is generated and acts on electric arc, remaining electric arc is blown and electric arc can not restrike.

When transmission line of lightning strike or route generation lightning induced voltage, insulator arc-over high-voltage end is caused to begin with lightning stroke electricity Stream passes through.The Lightning Over-voltage breakdown insulator chain generated when lightning stroke shaft tower or lightning conducter, the electric arc of formation can be by this dress The lower electrode for setting high-voltage end is pulled into the sense of the current trigger gas generator on the right side of device in spark chamber, to circulate in lower electrode Answer power supply that can generate an induced current, induced current will trigger the movement of arc extinguishing gas ball, generate high speed and high pressure gas and act on Electric arc, most of electric arc is directly blown and electric arc can not restrike.Remaining electric arc is entered in the spark chamber of left side by wall electrode, left side Recoiling device recoil tube opening in spark chamber leads arc ring, under the action of leading arc ring and wall electrode, fills into recoil The electric arc set will receive truncation and external truncation double action inside recoiling device, so that electric arc is truncated.

In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " left side ", The orientation or positional relationship of the instructions such as " right side ", "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, It is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Finally it is noted that above embodiments are only to illustrate the technical solution of the utility model, rather than it is limited System.Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should be managed Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement；And these are modified or replaceed, various embodiments of the utility model that it does not separate the essence of the corresponding technical solution The spirit and scope of technical solution.

Claims (9)

1. a kind of comprehensive arc extinguishing insulator of semi-enclosed recoil, including power transmission line is mounted on by connection gold utensil and makes somebody a mere figurehead cross arm of tower Upper insulator body (1)；It is characterized by: being hollow inside the insulator body (1), and along insulator body (1) Longitudinal be equipped with insulating barrier (7) to form two independent spark chambers (10) inside insulator body (1)；Arc extinguishing in left side Recoiling device (4) are equipped with inside chamber upper end, lower end is equipped with recoil opening；The top of the recoiling device (4) is equipped with top electrode (2)；Jet-stream wind device (5) are equipped with inside the spark chamber lower end on right side, upper end is equipped with the air-flow spout that outside side extends (9)；The bottom of the jet-stream wind device (5) is equipped with lower electrode (3)；The insulating barrier (7) is equipped with wall electrode (6).

2. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 1, it is characterised in that: the recoiling device (4) it is mainly made of recoil tube (41) and arrester (42)；The recoil tube (41) is open at one end, and other end fixed installation connects It dodges device (42), recoiling device (4) is made to become inner hollow, open at one end, the closed semiclosed pipe fitting of the other end；Described connects sudden strain of a muscle Device (42) and top electrode (2) are electrically connected.

3. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 2, it is characterised in that: the recoil tube (41) opening is equipped with and leads arc ring I (411).

4. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 1, it is characterised in that: the jet-stream wind Device (5) is mainly made of jet-stream wind generating device (51) and spraying canister (52)；Be inside the spraying canister (52) it is hollow, Spraying canister (52) is open at one end, and the other end is fixedly mounted on jet-stream wind generating device (51), and the jet-stream wind occurs Device (51) bottom and lower electrode (3) are electrically connected.

5. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 4, it is characterised in that: the spraying canister (52) opening is equipped with and leads arc ring II (521).

6. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 1, it is characterised in that: the wall electrode (6) using electrode slice or compression arc-extinguishing tube or recoil tube.

7. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 6, it is characterised in that: the compression arc extinguishing The inside of pipe is equipped with and leads arc ball.

8. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 1, it is characterised in that: the insulator master Body (1) outer surface is equipped with several skirts (8).

9. the comprehensive arc extinguishing insulator of semi-enclosed recoil according to claim 1, it is characterised in that: the outside side The air-flow spout (9) of extension Open Side Down inclination.