CN201486779U

CN201486779U - Distortion limit switch triggering device

Info

Publication number: CN201486779U
Application number: CN2009201939492U
Authority: CN
Inventors: 李保军; 陈建民
Original assignee: GUANGDONG MINGYANG WIND ELECTRICAL TECHNOLOGY Co Ltd
Current assignee: MingYang Smart Energy Group Co Ltd
Priority date: 2009-08-28
Filing date: 2009-08-28
Publication date: 2010-05-26
Anticipated expiration: 2019-08-28

Abstract

The utility model discloses a distortion limit switch triggering device, which is used to limit and protect a wind turbine cable, the keys of the technical solution thereof are that the distortion limit switch triggering device comprises an upper fixing ring and a lower fixing ring which are respectively fixed on the cable along the length direction of the cable, one side of the upper fixing ring and the lower fixing ring is provided with a triggering switch, a triggering pull ring is arranged on the triggering switch, the upper fixing ring is winded with a stay cord whose one end head is fixed on the upper fixing ring, the other end of the stay cord passes through the triggering pull ring to reversely wind on the lower fixing ring, and the other end head of the stay cord is fixed on the lower fixing ring. The distortion limit switch triggering device aims at overcoming the defects in the prior art, provides a twisted cable limit switch triggering device, which integrates the advantages of a traditional mode, has simpler structure and lower cost, particularly completely eliminates the damage of the twisted cable switch triggering device to human bodies, can not be triggered to urgently shut down because of faulty action, and greatly reduces the maintenance workload in later period simultaneously.

Description

A kind of distortion limit switch flip flop equipment

[technical field]

The utility model relates to a kind of wind-driven generator, a kind of distortion limit switch flip flop equipment of more specifically saying so.

[background technique]

Current; wind power generating set is turned round the cable position limitation protection for power cable and is mainly contained two kinds of forms; a kind of is to utilize weight, spacing trigger switch, cable retaining ring and wire rope to constitute; one end of wire rope is fixed on above the cable retaining ring; after passing spacing trigger switch; the other end is fixed on above the weight; weight is unsettled and lean on the gravity of self that wire rope is strained; like this when cable twists; to drive the cable retaining ring rotates; wire rope fixed thereon will constantly be wound on the cable retaining ring, and the drive weight moves up.The outer perimeter of known cable retaining ring is turned round the number of turns of cable protection as required, calculates weight to the length of steel wire rope between the spacing trigger switch.When cable twists the determined number of turns, weight just can arrive spacing trigger switch, and triggers spacing trigger switch under the pull of steel wire effect, reaches the purpose of turning round the cable position limitation protection.

Another method is to settle a gear drive at driftage bearing place; this device connects with driftage bearing gear mechanism; there is the gear transmission system that is provided with by a certain percentage inside; it calculates the number of turns of driftage; and reflect in inside,, just can touch an inner limit switch of this device when the number of turns of going off course reaches the setting number; send a signal, reach the purpose of turning round the cable position limitation protection.

Turn round each have their own characteristics of cable protection mode and deficiency for above-mentioned two kinds, first kind of mode is simple in structure, cheap, installation is efficient and convenient, but there is potential safety hazard, the weight that at first is weight probably has about 1 kilogram, it may break away from being fixed with between the wire rope, weight can directly fall from tens meters high-altitude, though be in tower tube inside, and the obstruct of which floor platform is arranged, but can not get rid of bounce behind the weight impact platform from the cat ladder mouth fall down may, will cause great harm to operation maintenance personnel's personal safety like this; Moreover the girth of cable retaining ring has 1 meter nearly; the number of turns of generally turning round cable protection is 3 circles; weight has 3 meters with the length of steel wire rope maximum between the spacing trigger switch so; weight is in swing state; 3 meters of cycloid length; tower tube vibration when wind speed is bigger; to cause weight constantly to clash into tower tube inwall, one damages the anticorrosive coat of tower tube inwall, has reduced the working life of tower tube; two acceleration of swinging can increase the pulling force that is applied on the spacing trigger switch; be easy to cause the malfunction of limit switch, cause the wind power generating set emergency shutdown, influence the Security of unit; increase maintenance workload, reduced the generated energy of wind-powered electricity generation factory.

The second way has solved first kind of various deficiencies and potential safety hazard that mode is brought basically, but also has complex structure, price is high and all need be from the problem of external import.Complex mechanical construction will make rate of fault improve, and maintenance workload is increased.The cable switch gear transmission device of turning round of one cover import costs an arm and a leg, and all spare parts all need from external import, and cost is very high.

[model utility content]

The utility model purpose is to have overcome deficiency of the prior art; a kind of distortion limit switch flip flop equipment is provided; it has gathered the advantage of traditional approach; structure is simple more, cost is cheaper; especially fully eliminated and turned round of the injury of cable switch trigger gear for the person; and can misoperation not trigger emergency shutdown, greatly reduce the maintenance workload in later stage simultaneously.

The utility model is achieved through the following technical solutions:

A kind of distortion limit switch flip flop equipment; be used for position limitation protection wind-driven generator cable; it is characterized in that comprising respectively along the cable length direction and be fixed on last retaining ring and following retaining ring on the cable; last retaining ring and following retaining ring one side are provided with trigger switch; described trigger switch is provided with the triggering draw ring; be fixed on stay cord on the retaining ring being wound with a termination on the last retaining ring; the described stay cord the other end passes the triggering draw ring and oppositely is wrapped in down on the retaining ring, and another termination of described stay cord is fixed on down on the retaining ring.

Twist the limit switch flip flop equipment as mentioned above, it is characterized in that described triggering draw ring equates with distance between last retaining ring and the following retaining ring.

Twist the limit switch flip flop equipment as mentioned above, it is characterized in that described stay cord is a wire rope.

Twist the limit switch flip flop equipment as mentioned above, it is characterized in that described stay cord twines circle at last retaining ring forward, oppositely twining circle on the retaining ring down.

Twist the limit switch flip flop equipment as mentioned above, it is characterized in that the two ends of described stay cord are separately fixed at the middle part of retaining ring and following retaining ring.

Twist the limit switch flip flop equipment as mentioned above, it is characterized in that the described distance that goes up between retaining ring and the following retaining ring is 10-15CM.

Compared with prior art, the utility model has following advantage:

The utility model has been cancelled weight, has eliminated personal safety hidden danger fully, has reduced the possibility of limit switch misoperation to greatest extent; Do not have gear train assembly, structure is very simple, significantly improves the reliability and stability of system; Only used parts seldom, and these parts are very common, it is convenient to change, and cost is extremely cheap.

[description of drawings]

Fig. 1 is the utility model plan view;

Fig. 2 is the utility model sectional view;

Fig. 3 is the utility model user mode figure.

[embodiment]

Below in conjunction with accompanying drawing the utility model is elaborated:

A kind of distortion limit switch flip flop equipment; be used for position limitation protection wind-driven generator cable; comprise respectively along the cable length direction and be fixed on last retaining ring 1 and following retaining ring 2 on the cable A; last retaining ring 1 and following retaining ring 2 one sides are provided with trigger switch 3; described trigger switch 3 is provided with and triggers draw ring 301; on last retaining ring 1, be wound with a termination and be fixed on stay cord 4 on the retaining ring 1; described stay cord 4 the other ends pass triggering draw ring 301 and oppositely are wrapped in down on the retaining ring 2, and described stay cord 4 another terminations are fixed on down on the retaining ring 2.

Described triggering draw ring 301 equates with distance between last retaining ring 1 and the following retaining ring 2.

Described stay cord 4 is a wire rope.Described stay cord 4 twines 3 circles at last retaining ring 1 forward, is oppositely twining 3 circles on the retaining ring 2 down.The two ends of described stay cord 4 are separately fixed at the middle part of retaining ring 1 and following retaining ring 2.

The power cable of wind-driven generator is fixed on the periphery of retaining ring on the cable 1 and following retaining ring 2, and wire rope 4 passes the triggering draw ring 301 of trigger switch 3, and the upper end is enclosed around 3 around last retaining ring 1 counterclockwise, is fixed on then on the immovable point 6.The lower end clockwise around following retaining ring 2 around 3 circles, and be fixed on the immovable point 7.When cable twists, last retaining ring 1 and following retaining ring 2 will drive wire rope 3 and slide in the middle of draw ring 5.When not reaching the protection number of turns of setting, do not reach and turn round the cable limit position, the retractable cable speed of last retaining ring 1 and following retaining ring 2 and length keep always, and wire rope 3 will can not be tightened up like this, and limit switch can not trigger yet.

Cable twists limit position counterclockwise; the wire rope 4 same immovable points 7 of retaining ring 2 down are pulled to and trigger draw ring 301 on same straight line; immovable point 7 arrives the position nearest apart from draw ring; the point of contact that cable continues twisting wire rope 4 the same retaining rings 1 will produce pulling force to wire rope 4; triggering draw ring 301 will be tightened and spur to wire rope 4; trigger trigger switch 3 simultaneously, reach the purpose of turning round cable protection.

Claims

1. distortion limit switch flip flop equipment; be used for position limitation protection wind-driven generator cable; it is characterized in that comprising respectively along the cable length direction and be fixed on last retaining ring (1) and following retaining ring (2) on the cable (A); last retaining ring (1) and following retaining ring (2) one sides are provided with trigger switch (3); described trigger switch (3) is provided with and triggers draw ring (301); be fixed on stay cord (4) on the retaining ring (1) being wound with a termination on the last retaining ring (1); described stay cord (4) the other end passes triggering draw ring (301) and oppositely is wrapped in down on the retaining ring (2), and another termination of described stay cord (4) is fixed on down on the retaining ring (2).

2. according to the described distortion limit switch of claim 1 flip flop equipment, it is characterized in that described triggering draw ring (301) equates with distance between last retaining ring (1) and the following retaining ring (2).

3. according to the described distortion limit switch of claim 1 flip flop equipment, it is characterized in that described stay cord (4) is a wire rope.

4. according to the described distortion limit switch of claim 1 flip flop equipment, it is characterized in that described stay cord (4) twines 3 circles at last retaining ring (1) forward, go up at following retaining ring (2) and oppositely twine 3 circles.

5. according to the described distortion limit switch of claim 1 flip flop equipment, it is characterized in that the two ends of described stay cord (4) are separately fixed at the middle part of retaining ring (1) and following retaining ring (2).

6. according to the described distortion limit switch of claim 1 flip flop equipment, it is characterized in that the described distance that goes up between retaining ring (1) and the following retaining ring (2) is 10-15CM.