A fixing support for pre-buried cable pipe and cooling pipe of wind power generator bottom

Abstract

The utility model discloses a fixing bracket for pre-buried cable pipes and cooling pipes at the bottom of a wind turbine, which comprises a vertical pipe bracket and several horizontal pipe brackets. The horizontal pipe brackets are arranged in parallel in sequence on one side of the vertical pipe bracket, and the vertical pipe bracket and the horizontal pipe brackets together form an L shape; the vertical pipe bracket is a cubic frame structure, on which there is a steel pipe extending downward from the top along the vertical direction, and there is a bracket cantilever on it. The bracket cantilever has a hanging groove for erecting and fixing the cooling pipe. The horizontal pipe bracket is two parallel "eye" shaped frames. On the transverse structure of the "eye" shaped frame, there are several bracket grooves for fixing the pre-buried cable pipes and hanging buckles for fixing the cooling pipes. This bracket can realize the positioning of the pre-buried cable pipes and the arrangement of the spiral cooling pipes, and can be cast or backfilled at one time, solving the problem that it is difficult to install and fix the cooling pipes when laying cables in layers.

Description

Technical Field

[0001] The utility model relates to a fixing bracket for pre-buried cable pipes and cooling pipes at the bottom of a wind turbine, belonging to the technical field of wind power generation. Background Technique

[0002] Wind power generation belongs to clean energy, with the characteristics of being renewable, pollution-free, having large energy, and broad prospects. Vigorously developing clean energy is a strategic choice for countries around the world.

[0003] The electric energy generated by a wind farm is transmitted to a 35kV box substation by the frequency converter of the wind turbine through low-voltage cables. With the continuous increase in the single-unit capacity of wind turbine generators, the amount of this part of low-voltage cables gradually increases and the cross-section enlarges, and a large amount of heat will be generated during operation. If the heat dissipation is improper, problems such as arc burning and line core overload will occur, seriously affecting the power generation performance and operation safety of the wind turbine unit. Therefore, strict requirements are put forward for the laying distance of cable pipes in the fan foundation at home and abroad. During construction, the low-voltage cables inside the foundation can be laid in layers to meet the distance requirements, and cooling pipes are arranged around to prevent the temperature from being too high. Arranging straight cooling pipes has a poor heat dissipation effect on low-voltage cables, and cooling pipes with a better effect of spiral pipe layout can be used. However, spiral pipe layout is difficult to apply to the construction of layered cable pipes. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixing bracket for pre-buried cable pipes and cooling pipes at the bottom of a wind turbine to solve the problem that it is difficult to install and fix spiral cooling pipes during the layered laying of low-voltage cables at the bottom of the wind turbine described in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fixing bracket for pre-buried cable pipes and cooling pipes at the bottom of a wind turbine includes a vertical pipe bracket and several horizontal pipe brackets. The horizontal pipe brackets are arranged in parallel in sequence on one side of the vertical pipe bracket, and the vertical pipe bracket and the horizontal pipe brackets as a whole form an L shape; the vertical pipe bracket is a cubic frame structure, on which there is a steel pipe extending downward from the top along the vertical direction, and there is a bracket cantilever on it, and there is a hanging groove on the bracket cantilever for erecting and fixing the cooling pipe. The horizontal pipe bracket is two parallel "eye" - shaped frames, the bottoms of the two "eye" - shaped frames are fixedly connected by steel pipes, and there are several bracket grooves on the horizontal structure of the "eye" - shaped frame for fixing the pre-buried cable pipes and hanging buckles for fixing the cooling pipe.

[0007] In the above technical solution, further, the vertical pipe support is a cubic frame structure formed by at least 12 stainless steel pipes. Steel pipes extending downward in the vertical direction are respectively provided in the middle of the stainless steel pipes at the top. A number of support cantilever arms perpendicular to the steel pipes are provided on the steel pipes. The support cantilever arms face the inside of the cubic frame structure, and a hanging groove is formed on the support cantilever arms for embedding the cooling pipe.

[0008] Further, each "Mu" - shaped frame is formed by fixing two longitudinal stainless steel pipes and a number of transverse stainless steel pipes. Both ends of each transverse stainless steel pipe are fixed to the two longitudinal stainless steel pipes. Hanging buckles are arranged in the middle of the transverse stainless steel pipe at the top of the "Mu" - shaped frame for fixing the cooling pipe. The lower - layer transverse stainless steel pipes form several layers of cable supports, and a number of support grooves are arranged on each layer of cable support for fixing the embedded cable pipes.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] (1) The distance between the grooves on the support of this application can be designed according to the standard of the spacing of the embedded cable pipes. By presetting the support in the foundation cushion of the fan in advance and installing the embedded cable pipes, the spacing can strictly meet the relevant domestic and international standards.

[0011] (2) By fixing the cooling pipe through the hanging grooves and hanging buckles on the support of this application, the cooling pipe can be closely arranged around the embedded cable pipe, improving the heat dissipation effect.

[0012] (3) The fixed support of this application is more conducive to construction. By presetting the support in the foundation cushion of the fan in advance and installing the embedded cable pipes, after the overall installation and fixation of the embedded cable pipes and the cooling pipe are completed, the backfill work is carried out. This gets rid of the previous construction method of "laying one layer and filling one layer" when laying cables in layers, reduces the construction difficulty and improves the work efficiency. While applying the spiral cooling pipe, it meets the construction requirements of laying cable pipes in layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of a specific embodiment of the present utility model;

[0014] Figure 2 It is the right view of a specific embodiment of the present utility model;

[0015] Figure 3 It is the schematic diagram of the vertical pipe support in a specific embodiment of the present utility model;

[0016] Figure 4 It is the schematic diagram of the horizontal pipe support in a specific embodiment of the present utility model;

[0017] Figure 5This is a front view of a horizontal pipe support in a specific embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] At the bottom of a wind turbine, pre-embedded cable conduits for the wind turbine's bottom cable routing are typically arranged sequentially within the pier and foundation pad of the extended wind turbine foundation, forming an overall L-shape. Cooling pipes can be arranged outside the pre-embedded cable conduits. Preferably, the pre-embedded cable conduits are laid in layers, and the cooling pipes are arranged in a spiral pattern outside all the pre-embedded cable conduits. To facilitate construction, this utility model provides a fixing bracket for the pre-embedded cable conduits and cooling pipes at the bottom of the wind turbine. Please refer to... Figure 1-5 This is a specific embodiment of the technical solution of this utility model: The fixed support includes a vertical pipe support 1 and a horizontal pipe support 2. The vertical pipe support 1 is used to support the upper cooling pipe 401 and is vertically arranged inside the pier of the extended wind turbine foundation and the wind turbine foundation pad layer. Several horizontal pipe supports 2 are arranged sequentially parallel to the direction of the pre-embedded cable pipe 3 and are used to support the pre-embedded cable pipe 3 and the lower cooling pipe 402. The horizontal pipe supports 2 are arranged inside the wind turbine foundation pad layer. The pre-embedded cable pipe 3 is used for the cable routing at the bottom of the wind turbine generator and is arranged inside the pier of the extended wind turbine foundation and the wind turbine foundation pad layer. The cooling pipe 4 is a pipe arranged around the pre-embedded cable pipe 3 and is connected to an external cooling system to achieve the purpose of cooling the cable pipe.

[0020] Vertical pipe support 1 is a cubic frame structure. In this example, as shown... Figure 3 It is constructed from 12 stainless steel pipes 101. The middle part of the top 4 stainless steel pipes 101 is provided with longitudinal stainless steel pipes perpendicular to them. Several support cantilever arms 102 protruding into the cubic frame structure are provided along the stainless steel pipes. The support cantilever arms 102 are provided with hanging grooves 103 for supporting and fixing the upper cooling pipes 401.

[0021] In this example, such as Figure 4 , Figure 5As shown, each horizontal pipe support 2 includes two "mu" - shaped frames 201 respectively composed of 8 stainless steel pipes 101, and 2 stainless steel pipes 101 at the bottom for connecting two adjacent "mu" - shaped frames 201. In this example, each "mu" - shaped frame 201 is composed of one horizontal stainless steel pipe at the top and bottom, 4 horizontal stainless steel pipes in the middle, and 2 vertical stainless steel pipes. The horizontal stainless steel pipes in the middle are provided with 4 - layer cable supports 202, and 5 support grooves 203 are arranged on each layer of cable support 202 for fixing the embedded cable pipe 3. A hanging buckle 204 is arranged in the middle of the stainless steel pipe 101 at the top of the "mu" - shaped frame 201 for fixing the lower cooling pipe 402; this hanging buckle 204 can adopt any form such as hook - shaped or clip - shaped that can fix the cooling pipe.

[0022] The embedded cable pipe 3 is laid in a layered manner and is installed through the vertical pipe support 1 and the horizontal pipe support 2 in an "L" - shape.

[0023] The cooling pipe 4 is arranged in a spiral shape outside the array of embedded cable pipes and is fixed to the inner sides of the vertical pipe support 1 and the horizontal pipe support 2. The condensate 403 circulates in the pipe and is sent to the underground heat - exchange pipe to cool the low - voltage cable.

[0024] This fixed support can realize the positioning of the layered laying of the embedded cable pipe and the arrangement of the spiral cooling pipe, and can be cast or backfilled at one time, solving the problem that it is difficult to install and fix the cooling pipe when laying cables in layers.

[0025] The specific implementation methods described in this article are only examples to illustrate the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific implementation methods or use similar methods to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A fixing bracket for pre-embedded cable conduits and cooling pipes at the bottom of a wind turbine generator, characterized in that, It includes a vertical pipe support (1) and several horizontal pipe supports (2). The horizontal pipe supports (2) are arranged in parallel in sequence on one side of the vertical pipe support (1). The vertical pipe support (1) and the horizontal pipe supports (2) form an L shape as a whole. The vertical pipe support (1) is a cubic frame structure. On this frame structure, there is a steel pipe extending downward from the top along the vertical direction. There is a support cantilever (102) on it, and there is a hanging groove (103) on the support cantilever (102) for erecting and fixing the cooling pipe. The horizontal pipe support (2) is two parallel "eye" - shaped frames (201). The bottoms of the two "eye" - shaped frames (201) are fixedly connected by a steel pipe. On the transverse structure of the "eye" - shaped frame (201), there are several support grooves (203) for fixing the embedded cable pipe (3) and hanging buckles (204) for fixing the cooling pipe.

2. The fixing bracket for pre-embedded cable conduit and cooling pipe at the bottom of a wind turbine generator according to claim 1, characterized in that, The described vertical pipe support (1) is a cubic frame structure erected by at least 12 stainless steel pipes (101). In the middle of the stainless steel pipes (101) at the top, there are respectively steel pipes extending downward along the vertical direction. There are several support cantilevers (102) perpendicular to them on the steel pipes. The support cantilevers (102) face the inside of the cubic frame structure. There is a hanging groove (103) formed on the support cantilevers (102) for embedding the cooling pipe (4).

3. The fixing bracket for pre-embedded cable pipes and cooling pipes at the bottom of a wind turbine generator according to claim 1, characterized in that, Each "eye" - shaped frame (201) is formed by fixing two longitudinal stainless steel pipes and several transverse stainless steel pipes. The two ends of each transverse stainless steel pipe are fixed to the two longitudinal stainless steel pipes. On the middle of the transverse stainless steel pipe at the top of the "eye" - shaped frame (201), there are hanging buckles (204) for fixing the cooling pipe (4). The lower - level transverse stainless steel pipes form several layers of cable supports (202). On each layer of cable supports (202), there are several support grooves (203) for fixing the embedded cable pipe (3).

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