CN109494658B

CN109494658B - Cable fixing device and wind generating set

Info

Publication number: CN109494658B
Application number: CN201811641800.6A
Authority: CN
Inventors: 陈媛媛; 顾伟峰
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-10-30
Anticipated expiration: 2038-12-29
Also published as: CN109494658A

Abstract

The embodiment of the invention provides a cable fixing device, which comprises: the cable fixing device comprises a first fixing component and a support, wherein the first fixing component is provided with a first through hole for enabling a first cable to pass through; the support piece is arranged at the bottom of the first fixing component and supports the first fixing component so as to be matched with the first fixing component to fix the first cable. The embodiment of the invention also discloses a wind generating set. The cable fixing device comprises the first fixing component and the supporting piece, wherein the first fixing component is used for fixing the first cable, and the supporting piece is arranged at the bottom of the first fixing component. This cable fixing device can also set up the fixed subassembly of second for fixed second cable realizes the reasonable via hole structural design of high-low voltage cable, prevents cable via hole wearing and tearing.

Description

Cable fixing device and wind generating set

Technical Field

The invention relates to the technical field of wind power generation, in particular to a cable fixing device and a wind generating set.

Background

In an electric power system of a wind generating set, a high-voltage power cable is applied between a transformer and a high-voltage ring main unit in a power transmission system on the grid side of the set and used for electric energy transmission. High-voltage power cables, low-voltage signal cables and power cables in the unit need to penetrate through a platform in the cabin, the cables are reliably fixed, the platform is effectively sealed, and the cables are fixed at a saddle platform at the lower part of the tower through platforms at all layers of the tower, so that the cable fixing and cable twisting processes are realized.

In the existing design structure of the wind generating set, in order to meet the requirement of a power cable passing platform, a design form of combining a sealing module component with a cable net bag is adopted to realize the sealing and fixing of a cable bundle, and the main purpose is to reduce the abrasion of a cable through hole and fix the cable to prevent the cable from sliding down. The anti-abrasion protection measures of the cable at the platform through hole are mainly solved by adopting cable guard rings or anti-abrasion sleeves and the like.

However, the applicant finds that the design scheme can not meet various functional requirements, the structural design and processing cost is high, and the requirement on structural installation is higher. In addition, the sealing module can not bear the vertical gravity of too big cable, and the sealing module receives the influence of lower part cable section cable gravity, easily appears the sealing module slippage and cable gliding. And the fixed string bag on the cable is twisted because of receiving the cable and is seized the swing power influence, and the string bag pine takes off the inefficacy easily appears, and the string bag is broken off the pine and is taken off the scene that drops.

Disclosure of Invention

In view of the above, the invention provides a cable fixing device and a wind generating set, which can solve various failure problems in a traditional power cable fixing structure, meet various functional requirements of structure fixing reliability, sealing performance and the like of a large-diameter high-voltage cable, meet strict requirements of the set on clamping and gliding prevention of the high-voltage cable, and meet structural installation and construction operation requirements in a process of laying and hoisting the high-voltage cable.

In order to solve the above problems, embodiments of the present invention mainly provide the following technical solutions:

in a first aspect, an embodiment of the present invention provides a cable fixing device, including: a first fixing component and a supporting component, wherein,

the first fixing member has a first through hole through which a first cable passes;

the supporting piece is arranged at the bottom of the first fixing component and supports the first fixing component so as to be matched with the first fixing component to fix the first cable.

Optionally, the first fixing assembly comprises: the fixing piece comprises at least two first split pieces, the first split pieces are spliced into a circular structure, and the inner walls of the spliced first split pieces form the first through hole;

the bottom of the first split piece is provided with an inclined surface protrusion along the circumferential direction, and the top of the first split piece is provided with at least one first mounting hole.

Optionally, a first sealing element is arranged between two adjacent first valve components for sealing a gap between the two adjacent first valve components; and is

And a first anti-skid layer is arranged on the inner wall of the first valve-dividing piece.

Optionally, the support member comprises a plurality of second split pieces, the second split pieces are spliced with each other, and the inner walls of the second split pieces form a second through hole;

the top of each second split piece is provided with an inclined groove matched with the inclined protrusion, and a second mounting hole is formed in the position corresponding to the first mounting hole.

Optionally, a second sealing element is arranged between two adjacent second valve halves for sealing a gap between the two adjacent second valve halves; and is

And a second anti-skid layer is arranged on the inner wall of the second valve-dividing piece.

Optionally, the first fixing assembly further comprises a plurality of fixing bolts; and is

And a thread structure is arranged in the first mounting hole, and when the fixing bolt is screwed down, the inclined surface protrusion moves towards the inclined surface groove through the matching of the nut and the fixing bolt, so that the first cable is fixed.

Optionally, a pressing pad is disposed on the top of the first split component, and when the fixing bolt is tightened, the inclined protrusion moves toward the inclined groove through the cooperation between the pressing pad and the fixing bolt, so as to fix the first cable.

Optionally, the cable fixing device further comprises: a plurality of second fixing members for fixing a second cable, the second fixing members being disposed on top of the first fixing members; alternatively, the first and second electrodes may be,

are arranged on two sides of the first fixing component.

Optionally, when the second fixing member is disposed on top of the first fixing member, the first fixing member further comprises: a circular housing, wherein the fixture is disposed within the circular housing and the second fixture assembly is disposed on top of the circular housing.

Optionally, the second fixing assembly comprises: the clamping device comprises a frame body, a pressing plate, a plurality of second cable fixing holes and fasteners, wherein the pressing plate and the second cable fixing holes are arranged in the frame body, and the pressing plate adjusts second radial pressing force of a cable exerted on the second cable fixing holes by the pressing plate through the fasteners.

Optionally, when the second fixing assemblies are arranged on the top of the first fixing assembly, the number of the second fixing assemblies is three, the second fixing assemblies surround the first through holes, and the distances between the second fixing assemblies are the same; or

When the second fixing assemblies are arranged on two sides of the first fixing assembly, the number of the second fixing assemblies is two, and the second fixing assemblies and the first fixing assemblies are arranged on the same plane.

In a second aspect, an embodiment of the present invention discloses a wind turbine generator system, including a nacelle, further including: the cable fixture device of the first aspect, the cable fixture device being disposed on a platform of the nacelle.

By the technical scheme, the technical scheme provided by the embodiment of the invention at least has the following advantages:

the cable fixing device comprises a first fixing component and a support component, wherein the first fixing component is used for fixing a first cable (such as a high-voltage cable), and the support component is arranged at the bottom of the first fixing component; the multifunctional requirements of the large-diameter high-voltage cable structure for fixing reliability, sealing performance and the like can be met, and the requirements of structural installation and construction operation in the high-voltage cable laying and hoisting process can be met.

The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the embodiments of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the alternative embodiments. The drawings are only for purposes of illustrating alternative embodiments and are not to be construed as limiting the embodiments of the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of a first embodiment of a cable fixing device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a fixing member according to a first embodiment;

FIG. 4 is a schematic structural view of the support member of the first embodiment;

FIG. 5 is a perspective view of a second securing assembly in accordance with an embodiment of the present invention;

FIG. 6 is a top view of a first embodiment of a cable fixture device according to an embodiment of the present invention;

FIG. 7 is an exploded view of a first embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural view of a second embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 9 is a perspective view of a second embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a second embodiment of a cable fixture device according to an embodiment of the present invention;

FIG. 11 is a bottom view of a second embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 12 is a schematic structural view of a third embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 13 is a perspective view of a third embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 14 is a cross-sectional view of a third embodiment of a cable fixture device in accordance with an embodiment of the present invention;

FIG. 15 is a schematic structural view of a fixing member according to a third embodiment of the present invention;

fig. 16 is a reference view showing a state in which the cable fixing device according to the embodiment of the present invention is used.

The reference numerals are introduced as follows:

1-a first fixation assembly; 2-a support; 3-a first cable; 4-a first via; 5-a second securing component; 51-a frame body; 52-a compacting plate; 53-second cable fixing holes; 54-a bolt; 55-a second nut; 56-mounting plate;

6-a second cable; 7-fixing the bolt; 8-a first nut; 9-fixing the plate; 10-buckling hanging holes; 11-a circular housing; 12-a fixing member; 13-a platform; 14-reinforcing ribs; 15-cable fixing clips; 121-a first petal member; 122 — first mounting hole; 123-a first seal; 124-a first non-slip layer; 125-a recess; 211-a second valving member; 212-a second via; 213-second mounting hole; 214-a second seal; 215-second non-slip layer.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The technical terms related to the present invention will be described first.

A high voltage cable is a kind of power cable, and refers to a power cable for transmitting between 1 kv and 1000 kv, which is applied to power transmission and distribution. In this embodiment, a high voltage cable is used to transmit 35 kv.

The low voltage cable is a power cable for transmitting between 0.6 kv and 1 kv, and is used for connecting a low voltage power source and a device to supply power to the relevant device.

Fig. 1 and 2 show a schematic structural view and a sectional view, respectively, of a first embodiment of a cable fixing device according to an embodiment of the present invention. As shown in fig. 1 and 2, the cable fixing apparatus includes: a first fixing member 1 and a support member 2, wherein the first fixing member 1 has a first through hole 4 through which a first cable 3 passes; the supporting member 2 is disposed at the bottom of the first fixing member 1, and supports the first fixing member 1 to fix the first cable 3 in cooperation with the first fixing member 1.

The following list of several embodiments describes in detail the cable fixture of the present application:

the first embodiment:

fig. 3 shows a schematic view of the structure of the fixing member 12. As shown in fig. 3, in the present embodiment, the fixing member 12 includes at least two first split members 121, the at least two first split members 121 are spliced to each other to form a circular structure, and after the first split members 121 are spliced to form a circle, the inner wall thereof forms a first through hole 4 at the position of the center of the circle. The bottom of each first split member 121 is provided with a slope protrusion in the circumferential direction, and the top of each first split member 121 is provided with at least one first mounting hole 122.

Alternatively, as shown in fig. 3, first sealing members 123 are provided on opposite side walls of adjacent two first split members 121 for sealing a gap between the adjacent two first split members 121. And, be provided with first skid resistant course 124 on the inner wall of first split 121, the setting of first skid resistant course 124 can be better realize that the cable presss from both sides tight fixed anti-gliding.

Specifically, the first sealing member 123 can satisfy the tight connection in the circumferential direction, because due to the gravity action of the first cable 3, a force is generated between the contacting first split members 121, which drives the first split members 121 to be compact toward the middle, thereby fixing the first cable 3. Therefore, after the first split member 121 is pressed, the first split member 121 is gathered toward the center, and the first seal member 123 is pressed, thereby performing a sealing function.

In contrast, fig. 4 shows a schematic structural view of the support 2. As shown in fig. 4, the supporting member 2 includes at least two second split members 211 matched with the first split members 121, the at least two second split members 211 are spliced with each other, and the spliced inner walls of the second split members 211 form second through holes 212. The top of each second split member 211 is provided with a slope groove matching with the slope protrusion of the bottom of the first split member 121, and a second mounting hole 213 is provided at a position corresponding to the first mounting hole 122.

In this embodiment, the first fixing component 1 and the supporting component 2 are both split structures, so that the axial positioning is convenient to align, and the deflection is avoided and the alignment is difficult. In addition, the design of split structure for the degree of compressing tightly of first fixed subassembly 1 and support piece 2 is easily adjusted more, and is used in the packing force on first cable 3 evenly, and the cable centre gripping is fixed reliable.

Optionally, as shown in fig. 4, a second seal 214 is provided between two adjacent second split members 211 for sealing a gap between two adjacent second split members 211. A second anti-slip layer 215 may be disposed on an inner wall of the second split 211. Similarly, the second sealing member 214 can satisfy the tight connection in the circumferential direction, and can receive a force in the vertical direction of the split portion, so that the split gap can be reduced, and the first cable 3 can be clamped by the second through hole 212. Therefore, in use, the outer peripheral side of each second split member 211 of the supporting member 2 may be fixed to a fixed platform first, and for example, a clamping force along the center of the second through hole 212 may be applied to each second split member 211 through the platform to achieve tight connection of the split portions in the circumferential direction, the first cable 3 may be clamped by the second split member 211, and then the first split member 121 may be gathered toward the center by, for example, fitting of a bolt and a nut to achieve clamping of the first cable 3.

As shown in fig. 5 to 7, in the present embodiment, the cable fixing device may include a plurality of second fixing members 5 disposed at predetermined positions corresponding to the first through holes 4 for fixing the second cables 6 (e.g., low voltage cables). As shown in fig. 5, the second fixing assembly in the present embodiment includes a frame body 51, a pressing plate 52, a plurality of second cable fixing holes 53, and fasteners (bolts 54, second nuts 55), wherein the plurality of second cable fixing holes 53 have different diameters, and can be adapted to second cables having different diameters. A pressing plate 52 and a plurality of second cable fixing holes 53 are provided in the frame body 51, and the pressing plate 52 adjusts the second cable radial pressing force applied to the second cable fixing holes 53 by the pressing plate 52 through bolts 54 and second nuts 55 to change the degree of clamping of the second cable by the second cable fixing holes 53. Therefore, in the present embodiment, the second cable fixing hole 53 is made of an elastic material such as rubber.

The second fixing member 5 further includes a mounting plate 56, and the mounting plate 56 is disposed at the bottom of the frame body 51 for fixing the second fixing member 5 at a suitable predetermined position, for example, on the circular housing 11. The frame body 51 is manufactured by a sheet metal tailor welding method. However, other suitable manufacturing methods may be used as will be apparent to those skilled in the art. The second fixing assembly of the embodiment is simple in structure, low in machining cost and controllable in machining precision. The second cable fixing hole 53 has excellent installation process performance and is easy to operate on site. Enough cable sealing module reservation can be reserved by the mode of extruding the second cable fixing hole 53 through the pressing plate 52, and the cable sealing module reservation method is suitable for temporarily fixing different test cables in a prototype stage.

With continued reference to fig. 6-7, the second stationary component 5 is disposed on top of the first stationary component 1. The first fixing assembly 1 further comprises: a circular housing 11, and the second fixing member 5 is disposed on the top of the circular housing 11. When the second fixing members 5 are disposed on the top of the first fixing member 1, the number of the second fixing members 5 may be three and surround the circumference of the first cable 3, and the distances between the second fixing members 5 are the same, that is, the included angle between two adjacent second fixing members 5 and the circle of the first cable 3 is 120 degrees, so that the cable fixing device of the embodiment of the present invention is suitable for second cables of different sizes by being used together with the second fixing members 5 of the embodiment. When using, the fixed subassembly 5 of second is fixed on circular casing 11, and circular casing 11 is fixed on for example the platform in the wind generating set simultaneously, and the inside of circular casing 11 is hollow structure to satisfy under the fixed prerequisite of effective support, reduce circular casing 11's materials, reduce manufacturing cost. Simultaneously, the platform place plane of the fixed support piece 2 that corresponds in the inside of circular casing 11, can reserve the free space that supplies second cable 6 to pass and get into tower section of thick bamboo inside, can set up the support piece between fixed platform and the support piece 2 to a supporting beam structure, can form the supporting beam of three direction on the circular plane that fixed platform and circular casing 11 correspond like this, and equally divide the position setting of circumference angle, and become free space between two adjacent supporting beams, make things convenient for the second cable to pass through inside the free space gets into a tower section of thick bamboo.

Optionally, as shown in fig. 6 and 7, the first fixing assembly 1 further includes a plurality of fixing bolts 7. A threaded structure such as a first nut 8 is provided in the first mounting hole 122, the support member 2 is fixed on the fixing platform, the first cable 3 is passed through the first through hole 4 and the second through hole 212, and the first cable 3 is clamped by the second split member 211, when the fixing bolt 7 is tightened, the first split member 121 is moved in the direction of the inclined protrusion matching with the inclined groove by the vertical downward acting force of the fixing bolt 7 on the first split member 121 through the cooperation of the first nut 8 and the fixing bolt 7, so that the first through hole 4 is made more compact, and the first cable 3 is fixed. In addition, when the circular housing 11 is provided, in order to facilitate the above-mentioned fixing operation of the first cable 3, the circular housing 11 is further provided with a strip-shaped through hole, and the fixing bolt 7 passes through the first and second through holes from the top of the circular housing 11, so that the same cable fixing device can be applied to first cables 3 of different diameters.

Of course, in another embodiment, a pressing pad may be further disposed on the top of the fixing member, that is, a pressing pad having the same structure as the circular plane is disposed on the circular plane formed by the spliced first split member 121, and the pressing pad is disposed in the space between the circular housing 11 and the first split member 121, and is penetrated through the through hole of the circular housing 11 by the fixing bolt 7 and pressed against the pressing pad. When the fixing bolt is screwed down, through the cooperation of compressing tightly backing plate and fixing bolt, the compressing tightly backing plate receives the vertical decurrent packing force of fixing bolt promptly, transmits to first split part 121 through compressing tightly the backing plate for first split part 121 moves along the direction that the inclined plane is protruding to be cooperated with the inclined plane recess, makes first through-hole 4 compacter, and then fixed first cable 3. Of course, the pressing pad plate may be provided in an integral circular structure, or a split structure corresponding to the first split member 121, which is not limited herein.

Second embodiment:

unlike the first embodiment, fig. 8 to 10 show a second embodiment of the cable fixing device of the embodiment of the present invention. As shown in fig. 8 to 10, the second fixing members 5 are disposed on both sides of the fixing member 12, wherein, alternatively, when the second fixing members 5 are disposed on both sides of the first fixing member 1, the number of the second fixing members 5 is two and disposed on the same plane as the supporting member 2.

For the fixing piece 12 and the supporting piece 2, when the cable fixing device provided by the embodiment of the invention is produced in batch, an injection molding processing mode can be selected, the reliable clamping requirement of the high-voltage cable is met, the structure weight is lighter, and the batch processing can save processing materials and processing cost. Based on the above principle, as shown in fig. 8 to 10, in the second embodiment of the cable fixing device, the fixing member 12 and the supporting member 2 are also of a split structure, and the number of the split members of the fixing member 12 and the supporting member 2 is two. Thus, unlike the first embodiment, in the second embodiment, the two supports 2 can be arranged opposite to each other along the same horizontal plane, so as to be spliced into a rectangular structure. The fixing manner of the first cable 3 in the second embodiment is similar to that of the first cable 3 in the first embodiment, and the description thereof is not repeated. In addition, as shown in fig. 8, when the two supporting members 2 are spliced along the same horizontal plane, a connecting portion may be provided at both ends of the two supporting members that contact each other, and the fixing device may be further fixedly connected and stabilized by bolts.

As shown in fig. 9, the supporting member 2 in the second embodiment is a hollow structure, and is manufactured according to a nylon injection mold, so that compared with a solid mold, the strength of the injection mold meets the fixing requirement, the weight is lighter, and the processing material and the processing cost are saved. Similar to the first embodiment, as shown in fig. 10, the fixing portion 12 and the supporting member 2 in the second embodiment also have a slope protrusion and a slope groove, when a fixing bolt (not shown in the figure) is tightened, a force is generated between the first split members 121 by the gravity of the first cable 3, the first split members of the fixing portion 12 are driven to be compact toward the middle, the first cable is fixed, and the fixing is performed by the fixing bolt and the nut. In the present embodiment, the supporting member 2 and the fixing portion 12 are both hollow-out structures. However, it will be apparent to those skilled in the art that other suitable structures may be used to form the support member 2 and the fixing portion 12.

In addition, in this embodiment, cable fixing device installs on fixed plate 9, is provided with the knot hole of hanging 10 that is used for the cable string bag to dismantle in the bottom of fixed plate, can satisfy first cable hoist and mount laying in-process, hangs the use temporarily. And, a reinforcing rib 14 is further provided at the bottom of the fixing plate 9 for increasing the supporting strength.

The third embodiment:

fig. 12 to 15 show a third embodiment of the cable fixing device of the embodiment of the present invention. Different from the second embodiment, the method does not need to open a mold for injection molding, and has low processing cost and controllable processing cost. Based on the above principle, in the third embodiment, the fixing member 12 and the supporting member 2 are also of a split structure, and the number of split members of the fixing member 12 and the supporting member 2 is two. Thus, similarly to the second embodiment, in the third embodiment, two supports 2 can be arranged opposite to each other along the same horizontal plane, thereby being spliced into a rectangular structure. The fixing manner of the first cable 3 in the third embodiment is similar to that of the first cable 3 in the second embodiment, and the description thereof is not repeated.

As shown in fig. 15, in the present embodiment, the first mounting hole 122 has a long bar shape. When using, in fixing bolt inserts first mounting hole 122, exert the effort because of fixing bolt to mounting 12 in vertical direction for mounting 12 gathers together to the center, and fixing bolt can produce relative displacement, and consequently, the first mounting hole 122 of rectangular shape has played in this embodiment and has carried out spacing effect to mounting 12, makes after inserting fixing bolt, and mounting 12 still can carry out the displacement in the certain distance.

A recess 125 is provided at the first mounting hole 122 at the middle of the fixing member 12. When the fixing member 12 is fixed to the support member 2, the recess 125 can engage with a projection (not shown) provided on the support member 2, thereby functioning as a stopper in the circumferential direction.

Similar to the second embodiment, the first fixing assembly further includes a plurality of fixing bolts. The nut is arranged in the first mounting hole, and when the fixing bolt is screwed down, the inclined surface protrusion moves towards the inclined surface groove (namely, the direction of the matching of the concave part and the convex part is gathered towards the center) through the matching of the nut and the fixing bolt, so that the first cable is fixed. Of course, in another embodiment, a pressing pad is provided on the top of the fixing member 12, and when the fixing bolt 7 is tightened, the inclined protrusion is moved toward the inclined groove by the engagement of the pressing pad with the fixing bolt 7, thereby fixing the first cable 3.

Similar to the cable fixing device of the second embodiment, in this embodiment, the cable fixing device can also be installed on the fixing plate 9, and the bottom of the fixing plate is provided with a buckling hole 10 for detaching the cable net bag, so that the temporary suspension use in the first cable hoisting and laying process can be met. And, still set up the strengthening rib in the bottom of fixed plate 9, be used for increasing the support intensity.

The differences in the structural optimization involved in all the examples with respect to the cable fixture of the second embodiment and the cable fixture of the third embodiment are within the scope of patent protection.

Based on the same inventive concept, in a second aspect, the embodiment of the invention discloses a wind generating set, which comprises a cabin. Further, as shown in fig. 16, the wind turbine generator system further includes: the cable fixture of the first aspect is arranged on a platform 13 of the nacelle.

In order to meet the performance characteristics of the high-voltage cable, the cable fixing device provided by the embodiment of the invention fully considers the strict requirements of the unit on cable clamping fixation and anti-sliding of the unit, can simultaneously realize cable clamping fixation and anti-sliding, and can also meet the sealing requirements of the unit on the cable fixing device and the platform 13, and the cable fixing device can realize reasonable via hole structural design of the high-voltage and low-voltage cables, prevent the cable via holes from being worn, can realize various functional requirements of the cables, and greatly reduce the structural design and the processing cost.

The cable fixing device is fixedly installed in the middle of the platform 13 in the engine room, and the cable fixing device needs to bear the weight of a cable twisting structure and a twisting stopping structure at the lower section at the same time, so that the dynamic working condition of cable twisting lifting during yawing cable twisting is realized. The sealing

members

123, 214 are used for meeting the sealing requirement of the whole ventilation system, and realizing effective fixed sealing of the first cable and the second cable when the cables pass through the platform and are laid towards the lower part of the tower.

The installation steps of the cable fixing device of the embodiment of the present invention are described in detail below:

firstly, a single first cable (namely, a high-voltage cable) is hoisted and laid, the first cable is slowly lifted to a unit top platform with the height of more than 100 meters by using lifting equipment such as a lifter from the outside of a unit at the bottom of the tower, then the first cable penetrates through an opening of an inner platform and extends to an oil-immersed transformer (not shown in the figure) below a main platform, and the first cable is in butt joint with a T-shaped joint.

Then, from the oil-immersed transformer and the T-joint, effective fixing of the first cable by the cable fixing clip 15 is successively started. The high-voltage cable anti-sliding type sealing structure provided by the embodiment of the invention is arranged on the inner platform, and after all cable fixing clamps above the inner platform are fastened, the allowance of cables above the platform 13 is adjusted, and then the sealing structure is arranged. The two-split or multi-split fixing structure of the invention can effectively clamp and fix the cable from multiple directions.

And finally, after the upper part and the lower part of the first cable are fixed and clamped, fixing the outer frame of the sealing assembly and fastening the outer frame with bolts. And then inserting the second cable into the second cable fixing hole, and tightly pressing the second cable fixing hole through the pressing plate to complete the installation of the second cable.

Generally, after the cable fixing device provided by the invention is installed, safety detection needs to be carried out on the cable fixing device, so that the cable fixing device is ensured to meet the actual requirements of a wind generating set in actual use, and corresponding beneficial effects are achieved.

Specifically, the first cable and the second cable are fixed on the platform 13 by a cable fixing device; by fastening the first fixing component, the pretightening force of the first fixing component acting on the first cable is obtained; determining the length of the first cable fixed by the cable fixing device according to the pretightening force; and simulating the yawing condition of the wind driven generator and adjusting the pretightening force to determine the pretightening force meeting the yawing condition of the wind driven generator.

The beneficial effects obtained by applying the embodiment of the invention comprise:

1. the cable fixing device comprises a first fixing component and a support component, wherein the first fixing component is used for fixing a first cable (such as a high-voltage cable), and the support component is arranged at the bottom of the first fixing component; the multifunctional requirements of the large-diameter high-voltage cable structure for fixing reliability, sealing performance and the like can be met, and the requirements of structural installation and construction operation in the high-voltage cable laying and hoisting process can be met.

2. The cable fixing device provided by the embodiment of the invention can also be provided with a second fixing component for fixing a second cable (such as a low-voltage cable), so that the reasonable via hole structural design of the high-voltage and low-voltage cables is realized, and the abrasion of the cable via holes is prevented.

3. The cable fixing device has a split structure, is convenient to install, does not influence the laying and hoisting process of the high-voltage cable, and has obvious convenience and convenience advantages. The high-voltage cable is easy to replace and maintain in the later period, the field construction operation time is greatly reduced, and the labor cost is saved.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A cable fixture device, comprising: a first fixing assembly (1) and a support (2), wherein,

the first fixing component (1) is provided with a first through hole (4) for passing a first cable (3);

the supporting piece (2) is arranged at the bottom of the first fixing component (1) and supports the first fixing component (1) so as to be matched with the first fixing component (1) to fix the first cable (3);

the first fixing assembly (1) comprises: the fixing piece (12) comprises at least two first split pieces (121), the at least two first split pieces (121) are spliced into a circular structure, and the inner walls of the spliced first split pieces (121) form the first through hole (4);

the bottom of each first split piece (121) is provided with an inclined surface protrusion along the circumferential direction, the top of each first split piece (121) is provided with at least one first mounting hole (122), and the fixing bolt (7) is fixed with the support piece (2) through the first mounting hole (122);

the support (2) comprises at least two second split parts (211) matched with the first split part (121), the at least two second split parts (211) are spliced with each other, and the inner walls of the spliced second split parts (211) form second through holes (212);

the top of each second split part (212) is provided with an inclined groove matched with the inclined protrusion at the bottom of the first split part (121), and a second mounting hole (213) is arranged at a position corresponding to the first mounting hole (122).

2. The cable fixture device according to claim 1, wherein a first sealing member (123) is provided between adjacent two of the first split members (121) for sealing a gap between the adjacent two of the first split members (121); and is

A first anti-slip layer (124) is arranged on the inner wall of the first split piece (121).

3. The cable fixture device according to claim 1, wherein a second sealing member (214) is provided between adjacent two of the second split members (211) for sealing a gap between the adjacent two of the second split members (211); and is

A second anti-slip layer (215) is arranged on the inner wall of the second valve-dividing piece (211).

4. The cable fixture device according to claim 1, wherein the first fixing assembly (1) further comprises a plurality of fixing bolts (7); and is

And a thread structure is arranged in the first mounting hole (122), and when the fixing bolt (7) is screwed down, the inclined surface protrusion moves towards the inclined surface groove through the matching of the thread structure and the fixing bolt (7) to fix the first cable (3).

5. The cable fixture device of claim 1,

after splicing, a pressing base plate is arranged on the top of the first split piece (121), and when the fixing bolt (7) is screwed down, the inclined plane protrusion moves towards the inclined plane groove through the matching of the pressing base plate and the fixing bolt (7), so that the first cable (3) is fixed.

6. The cable fixture device of claim 1, further comprising: a plurality of second fixing members (5) for fixing a second cable (6), the second fixing members (5) being disposed on top of the first fixing members (1); alternatively, the first and second electrodes may be,

are arranged on both sides of the first fixing component (1).

7. The cable fixture device according to claim 6, wherein when the second fixture component (5) is arranged on top of the first fixture component (1), the first fixture component (1) further comprises: a circular housing (11), and the second fixing assembly (5) is disposed on top of the circular housing (11).

8. The cable fixture device according to claim 6, characterized in that the second fixing assembly (5) comprises: the cable fixing device comprises a frame body (51), a pressing plate (52), a plurality of second cable fixing holes (53) and fasteners, wherein the pressing plate (52) and the second cable fixing holes (53) are arranged in the frame body (51), and the pressing plate (52) adjusts radial pressing force of the second cable (6) exerted on the second cable fixing holes (53) by the pressing plate (52) through the fasteners.

9. The cable fixture device according to claim 6, wherein when the second fixing members (5) are disposed on top of the first fixing member (1), the number of the second fixing members (5) is three and surrounds the first through-holes (4), and the distances between the second fixing members (5) are the same; or

When the second fixing assemblies (5) are arranged on two sides of the first fixing assembly (1), the number of the second fixing assemblies (5) is two, and the second fixing assemblies and the first fixing assembly (1) are arranged on the same plane.

10. A wind generating set, includes the cabin, its characterized in that still includes: the cable fixture device according to any one of claims 1-9, said cable fixture device being arranged on a platform of said nacelle.