CN212277040U - Vibration switch protection cover assembly and wind generating set - Google Patents

Abstract

The utility model relates to a vibration switch protective cover assembly and a wind generating set, the vibration switch protective cover assembly comprises a vibration switch protective cover welded and a vibration switch; the vibration switch protective cover welding comprises a rear rack connecting plate, a supporting plate and a protective plate which are welded into a whole; two ends of the protection plate are connected with the support plate to form a frame structure; the rear rack connecting plate is positioned between the connecting support plates at the two sides, and the middle part of the rear rack connecting plate is used for fixing the vibration switch so that the vibration switch is positioned in the area wrapped by the frame structure; and flanges are arranged on two sides of the middle part of the rear frame connecting plate and are used for being fixed to a rear frame of the wind generating set. The connecting plate, the supporting plate and the protecting plate of the rear frame of the utility model are thick plate parts, and the whole strength is high after welding, and the rear frame is not easy to be knocked, deformed and damaged; simultaneously all protect vibration switch body, rocker, pouring weight, avoid being collided with the damage or avoiding three group pouring weight position changes to avoid causing the unable normally trouble that triggers.

Description

Vibration switch protection cover assembly and wind generating set

Technical Field

The utility model relates to a generator technical field especially relates to a vibration switch protection casing assembly and wind generating set.

Background

Different structural parts of a wind turbine generator set have different vibration and displacement, and monitoring is very important for some important parts, such as a tower, blades, a nacelle, a main shaft, a gearbox and a generator. If these components vibrate strongly or fail, they will generate a large impact, which may endanger the life and the normal use of the entire wind park. Therefore, monitoring these important components is an important part of the wind turbine safety chain.

The vibration switch is an important ring in a safety chain of the wind generating set, is arranged inside the engine room, monitors the impact of the engine room and the vibration of the engine room, and outputs a signal to a control system of the wind generating set. The vibration switch is used as an impact sensor and is in accordance with GL 2010 standard and ISO 13849-1 safety standard; the sensor has a safety impact detection function, is a three-direction vector sum impact sensor, and can define an alarm level by a user. The sensor is equipped with a backup safety relay, has high diagnostic coverage and a long mean time to failure.

The vibration switch accessories are four in number and respectively comprise a vibration switch body, a rocker, a weight block and an inner hexagonal flat end fastening screw. The weights are arranged on the rocker in a penetrating mode, the number and the installation positions are determined according to the actual condition of the wind generating set, and the weights are reliably fixed on the rocker through the hexagon socket flat end set screw, so that the weights are prevented from moving up and down along the rocker. The vibration switch needs to be vertically installed, the triggering type of the vibration switch is swinging triggering within a range of 360 degrees, a rated triggering point is an included angle of 20 degrees relative to a vertical position, the reliable action range is 0-20 degrees, and the minimum mechanical life is 4 multiplied by 10⁶Secondly, the shell material is a zinc casting body. The vibration switch assembly belongs to a relatively 'delicate' component in the wind generating set, is easy to collide with and damage when being subjected to external force, and the weight is easy to move downwards along the direction of the rocker when being subjected to the external force, so that the normal operation and the normal power generation of the wind generating set are influenced, therefore, the vibration switch needs to be effectively protected in daily work, and the damage caused by collision is avoided.

At present, the structural defects of a vibration switch mounting plate in a wind generating set are as follows:

1. the strength of the vibration switch mounting plate is insufficient, so that when a fan maintainer walks or works in a cabin, the vibration switch mounting plate is easy to be collided and deformed or damaged, and the triggering angle of the vibration switch is influenced;

2. the vibration switch body is exposed and leaked outside, so that collision damage or installation position change is easily caused, and the trigger angle of the vibration switch is influenced;

3. three groups of heavy blocks installed on the rocker of the vibration switch are all exposed and leaked outside, and the heavy blocks are easy to collide by maintenance personnel and then move downwards along the direction of the rocker, so that the position is changed, and the triggering angle of the vibration switch is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a vibration switch protective cover assembly and a wind generating set, wherein the vibration switch protective cover assembly has an integral welding structure and is not easy to collide, deform or damage; it effectively protects vibrating switch body, rocker, pouring weight, is difficult for colliding with the damage, can prevent that the pouring weight from causing the unable normally trouble that triggers because of touching the position changes simultaneously.

In order to achieve the above purpose, the utility model provides a vibration switch protective cover assembly, which comprises a vibration switch protective cover welded and a vibration switch;

the vibration switch protective cover welding part comprises a rear rack connecting plate, a supporting plate and a protective plate which are welded into a whole; two ends of the protection plate are connected with the support plate to form a frame structure; the rear rack connecting plate is positioned between the connecting support plates at the two sides, and the middle part of the rear rack connecting plate is used for fixing the vibration switch, so that the vibration switch is positioned in the area wrapped by the frame structure; and flanges are arranged on two sides of the middle part of the rear frame connecting plate and are used for being fixed to a rear frame of the wind generating set.

Further, the vibration switch comprises a body and a rocker, the rocker is used for sleeving the heavy block, and the rocker is fixed to the top end of the body.

Further, an M8 outer hexagon bolt penetrates through a through hole in the middle of the rear rack connecting plate and is screwed into a threaded hole of the rear rack for fixing; the end of the M5 socket head cap screw and the side of the weight are not higher than the front end surface of the protection plate and the support plate.

Furthermore, the rear rack connecting plate, the supporting plate and the protecting plate are thick plates made of Q235B steel plates; the thickness was 3 mm.

Furthermore, two sides of the protection plate are provided with inward bent flanges which are welded to the support plate.

Further, the length of the protection plate satisfies: the rocker does not touch the support plate before triggering.

The utility model discloses another aspect provides a wind generating set, adopts the vibration switch of vibration switch protection casing assembly be used for monitoring whether wind generating set vibrates to exceed standard.

The above technical scheme of the utility model has following profitable technological effect:

(1) the connecting plate, the supporting plate and the protecting plate of the rear frame of the utility model are thick plate parts, and the whole strength is high after welding, and the rear frame is not easy to be knocked, deformed and damaged;

(2) the utility model protects the vibration switch body, the rocker and the weight blocks, and avoids the damage caused by collision or the change of the positions of the three weight blocks, thereby avoiding the failure of normal triggering;

(3) the utility model discloses a length and size extension of guard plate can avoid the vibration switch rocker to collide with the backup pad before normally triggering, and its intensity can be guaranteed to the turn-ups of bending of guard plate both sides.

Drawings

FIG. 1 is an installation schematic view of a wind generating set vibration switch protective cover assembly of the present invention;

FIG. 2 is a first block diagram of a vibration switch shield assembly;

FIG. 3 is a second block diagram of the vibration switch shield assembly;

FIG. 4 is a block diagram of a vibration switch shield weld;

in the figure: 1-welding a vibration switch protective cover, 2-welding a vibration switch, 3-weight, 4-M5 hexagon socket flat end set screws, 5-5 washers, 6-M5 hexagon socket screws, 7-M5 nuts, 8-8 washers, 9-M8 outer hexagon bolts, 10-rear frame, 11-rear frame connecting plate, 12-supporting plate, 13-protecting plate, 21-body and 22-rocker.

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 detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The utility model discloses a aerogenerator's vibration switch protection casing assembly's concrete structure as follows:

as shown in fig. 1, 2 and 3, the vibration switch protective cover assembly includes a vibration switch protective cover welding joint 1, a vibration switch 2, a weight 3, M5 socket head set screws 4, 5 washers 5, M5 socket head set screws 6, M5 nuts 7, 8 washers 8, M8 outer hexagon bolts 9 and other parts; the vibration switch protective cover welding part 1 comprises a rear rack connecting plate 11, a supporting plate 12, a protective plate 13 and the like; the vibration switch 2 comprises a body 21 and a rocker 22.

As shown in fig. 4, the rear frame connecting plate 11 is formed by processing a thick plate, and is integrally shaped like a "table", and two side flanges thereof are respectively provided with two groups of round holes, which correspond to four groups of M8 threaded holes on the rear frame 10 one by one, and are mounted by using 8 washers 8 and M8 outer hexagon bolts 9.

Four groups of round holes are arranged on the mounting surface of the vibration switch on the rear frame connecting plate 11, correspond to the four groups of round holes on the vibration switch body 21 one by one, and are mounted by using 5 gaskets 5, M5 nuts 7 and M5 hexagon socket head cap screws 6.

The support plate 12 is formed by processing a thick plate and is welded with the rear frame connecting plate 11 and the protection plate 13.

The protection plate 13 is formed by processing a thick plate, is integrally U-shaped, and is welded with the support plate 12 at two ends. The length of the protection plate 13 is lengthened, so that the rocker 22 of the vibration switch 2 can be prevented from colliding with the support plate 12 before normal triggering, and the normal triggering of the vibration switch 2 is influenced.

The vibration switch 2 is divided into a body 21, a rocker 22 and the like, and three groups of weights 3 are arranged on the rocker 22 in a penetrating way. The body 21 is securely fastened to the back frame attachment plate 11 using M5 socket head cap screws 6, 5 washers 5, and M5 nuts 7, while M5 socket head cap screws 6 are mounted lower than the support plate 12. The rocker 22 is disposed at the top end of the body 21. The weight 3 is provided with a group of M5 threaded holes, the M5 hexagon socket head cap screws 4 are screwed in during installation, the end face of the M5 hexagon socket head cap screws 4 is abutted against the outer circle of the rocker 22 to fix the weight 3, and simultaneously, the M5 hexagon socket head cap screws 4 are installed to ensure that the tail end is flush with the outer circle of the weight 3.

Vibration switch body 21, rocker 22, pouring weight 3 all wrap up by vibration switch protection casing seam 1, avoid being collided with the damage, also avoid the pouring weight to cause the unable normally trouble that triggers because of colliding with the position change simultaneously.

The utility model discloses another aspect provides a wind generating set adopts the vibration switch of vibration switch protection casing assembly for whether monitoring wind generating set vibration exceeds standard.

To sum up, the utility model relates to a vibration switch protective cover assembly and a wind generating set, the vibration switch protective cover assembly comprises a vibration switch protective cover welded and a vibration switch; the vibration switch protective cover welding comprises a rear rack connecting plate, a supporting plate and a protective plate which are welded into a whole; two ends of the protection plate are connected with the support plate to form a frame structure; the rear rack connecting plate is positioned between the connecting support plates at the two sides, and the middle part of the rear rack connecting plate is used for fixing the vibration switch, so that the vibration switch is positioned in the area wrapped by the frame structure; and flanges are arranged on two sides of the middle part of the rear frame connecting plate and are used for being fixed to a rear frame of the wind generating set. The connecting plate, the supporting plate and the protecting plate of the rear frame of the utility model are thick plate parts, and the whole strength is high after welding, and the rear frame is not easy to be knocked, deformed and damaged; simultaneously all protect vibration switch body, rocker, pouring weight, avoid being collided with the damage or avoiding three group pouring weight position changes to avoid causing the unable normally trouble that triggers.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (7)

1. A vibration switch protective cover assembly is characterized by comprising a vibration switch protective cover welding part (1) and a vibration switch (2);

the vibration switch protective cover welding joint (1) comprises a rear rack connecting plate (11), a supporting plate (12) and a protective plate (13) which are welded into a whole; two ends of the protection plate (13) are connected with the support plate (12) to form a frame structure; the rear rack connecting plate (11) is positioned between the connecting support plates (12) at two sides, and the middle part of the rear rack connecting plate (11) is used for fixing the vibration switch (2), so that the vibration switch (2) is positioned in an area wrapped by the frame structure; and flanges are arranged on two sides of the middle part of the rear frame connecting plate (11) and are used for being fixed to a rear frame (10) of the wind generating set.

2. The vibration switch shield assembly according to claim 1, wherein the vibration switch (2) comprises a body (21) and a rocker (22), the rocker (22) is used for sleeving the weight (3), and the rocker (22) is fixed at the top end of the body (21).

3. The vibration switch protective cover assembly according to claim 2, wherein an M8 outer hexagon bolt (9) passes through a through hole in the middle of the rear frame connecting plate (11) and is screwed into a threaded hole of the rear frame (10) for fixing; and fixing the body (21) to the rear frame connecting plate (11) by using an M5 socket head cap screw (6), a washer (5) and an M5 nut (7), wherein the tail end of the M5 socket head cap screw (6) and the side surface of the weight (3) are not higher than the front end surfaces of the protection plate (13) and the support plate (12).

4. The vibration switch protective cover assembly according to claim 2, wherein the rear frame connecting plate (11), the supporting plate (12) and the protective plate (13) are thick plates made of Q235B steel plate; the thickness was 3 mm.

5. The vibration switch protective cover assembly according to claim 4, wherein both sides of the protective plate (13) are provided with inwardly bent flanges welded to the support plate (12).

6. A vibration switch protective cover assembly according to one of claims 2 to 5, characterized in that the length of said protective plate (13) is such as to satisfy: the rocker (22) does not touch the support plate (12) before triggering.

7. Wind park according to any of claims 1 to 6, wherein the vibration switch (2) of the vibration switch protective cover assembly is used for monitoring whether the vibration of the wind park exceeds a standard.

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