Acceleration type draught fan pipe barrel frame inhaul cable supporting structure

Abstract

The utility model discloses a speed-increasing type draught fan pipe barrel frame inhaul cable supporting structure which comprises a supporting platform, a supporting column assembly, an outer frame assembly, an inhaul cable supporting assembly, a first mandrel and a second mandrel, the supporting column assembly is vertically fixed to the top of the supporting platform, the first mandrel is fixedly arranged on one side of the top of the supporting column assembly, and the second mandrel is fixedly arranged on the other side of the top of the supporting column assembly. A second core shaft is fixedly arranged on one side of the top of the supporting column assembly, the outer wall of the first core shaft is fixedly connected with an outer frame assembly through an inhaul cable supporting assembly, the outer wall of the second core shaft is fixedly connected with the outer frame assembly through an inhaul cable supporting assembly, and the bottom of the outer frame assembly is fixedly connected with the supporting platform through a plurality of fixing rods. The utility model has the beneficial effects of reasonable structure, light weight and high strength, and is suitable for being used in wind fields with lower wind speed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and more specifically to a speed-increasing wind turbine tube frame cable support structure. Background Art

[0002] Wind energy is a renewable clean energy with huge reserves and wide distribution. However, it also has many major weaknesses, such as: ① Low density. This is an important defect of wind energy. Since wind energy comes from the flow of air, and the density of air is very small, the energy density of wind power is also very small, only 1 / 816 of water power. ② Unstable. Since airflow changes rapidly, the pulsation, daily changes, seasonal changes and even annual changes of wind are very obvious, with large fluctuations and extremely unstable. ③ Large regional differences. Due to the influence of terrain, the regional differences in wind power are very obvious. In a neighboring area, the wind power under favorable terrain is often several times or even dozens of times that under unfavorable terrain.

[0003] Although the speed-increasing tube-type wind turbine generator set can improve the energy density of wind power through the tube speed increase, stabilize wind pulsation through the tube diversion, and can adapt to low wind speed areas, it has broadened the applicable range of wind turbine wind speeds and has high economic and social benefits. However, due to the speed-increasing tube outside the wind rotor, the external wind speed is unstable, resulting in a large wind-receiving area for high-power speed-increasing tube units, which has put forward new requirements and challenges for the overall structural design of the machine.

[0004] Long-term testing has shown that the structural strength requirements for the tube frame of the speed-increasing wind turbines in different wind farm environments are different. Therefore, long-term continuous research has found that the structure of the tube frame of the speed-increasing wind turbines used in different scenarios needs to be redesigned. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide a speed-increasing wind turbine tube frame cable support structure which has a reasonable structure, light weight, high strength and is suitable for use in wind fields with relatively low wind speeds.

[0006] According to one aspect of the utility model, a cable support structure for a speed-increasing wind turbine tube frame is provided, which includes: a support platform, a support column assembly, an outer frame assembly, a cable support assembly, a first mandrel and a second mandrel, the top of the support platform is vertically fixed with the support column assembly, one side of the top of the support column assembly is fixedly provided with the first mandrel, one side of the top of the support column assembly is fixedly provided with the second mandrel, the outer wall of the first mandrel is fixedly connected to the outer frame assembly through the cable support assembly, the outer wall of the second mandrel is fixedly connected to the outer frame assembly through the cable support assembly, and the bottom of the outer frame assembly is fixedly connected to the support platform through a plurality of fixing rods. The outer frame assembly is fixed by the cable support assembly, so as to improve the overall structural strength of the utility model and make it suitable for use in wind fields with relatively low wind speeds.

[0007] In some embodiments, the support column assembly includes: a left support column and a right support column, the left support column and the right support column are vertically fixed on the support platform, and the left support column and the right support column are symmetrically arranged. The frame is supported by two support groups at the same time.

[0008] In some embodiments, the top of the left support column is fixedly connected to the first core shaft, and the top of the right support column is fixedly connected to the second core shaft. The first core shaft and the second core shaft are coaxial, and the coaxiality of the first core shaft and the second core shaft facilitates the installation of the blade.

[0009] In some embodiments, the outer frame assembly includes: an inner ring, an outer ring, an edge ring, an arc-shaped support rod and a fastener, a plurality of arc-shaped support rods are arranged between the outer ring and the inner ring, the arc-shaped support rods are concave arc-shaped and are arranged in plurality, the arc-shaped support rods are evenly distributed between the outer ring and the inner ring, the fasteners are connected to the outer side of the outer ring and the inner ring for fixing, the edge ring is fixedly arranged on the outer side of the outer ring, and the arc-shaped support rods are tightened by connecting rods. By covering the inner wall of the arc-shaped support rods in the inner ring, the outer ring and the edge ring with a tension film, a speed increasing tube is formed.

[0010] In some embodiments, the cable support assembly includes: a left support part and a right support part, one end of the left support part is fixedly connected to the first mandrel, the other end of the left support part is fixedly connected to the outer frame assembly, one end of the right support part is fixedly connected to the second mandrel, and the other end of the right support part is fixedly connected to the outer frame assembly. The left support part and the right support part are respectively supported on both sides of the multi-frame assembly to improve the structural strength.

[0011] In some embodiments, the left support portion includes a plurality of cable connecting rods, wherein 8 to 12 cable connecting rods are provided and the cable connecting rods are regularly distributed in a circular array with the first core shaft as the center. The force received by the frame assembly is dispersed to the two core shafts through multiple groups of evenly distributed cable connecting rods.

[0012] In some embodiments, the structure of the left support portion is the same as the structure of the right support portion.

[0013] In some embodiments, the cable connecting rod includes: a cable, a connecting member and a first tightening member, one end of the cable is connected to the outer frame assembly through a provided connecting member, and one end of the cable is connected to the first mandrel or the second mandrel through a provided first tightening member. The cable is used to appropriately reduce the weight of the overall structure, and can be tensioned by the first tightening member to ensure strength.

[0014] In some embodiments, a climbing frame is provided on the right support column, and a lightning rod is provided on the top of the outer frame assembly.

[0015] The utility model has the beneficial effects of reasonable structure, light weight, high strength and suitability for use in wind farms with low wind speed. The utility model fixes the outer frame assembly through the cable support assembly, which is convenient for improving the overall structural strength of the utility model and is suitable for use in wind farms with high wind speed; the frame is supported by two support groups at the same time; the first core shaft and the second core shaft are coaxial to facilitate the installation of blades; the inner wall of the arc-shaped support rods of the inner circle, outer circle and edge circle is covered with a tensioning membrane to form a speed-increasing tube; the left support part and the right support part respectively support both sides of the frame assembly to improve the structural strength; the force on the frame assembly is dispersed to the two core shafts through multiple groups of evenly distributed cable connecting rods; the weight of the overall structure is appropriately reduced by using the moment cable, and the first tightening member can be tensioned to ensure strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the cable support structure of the speed-increasing fan tube frame of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the outer frame assembly of the rigid support structure of the speed-increasing fan tube frame of the utility model;

[0018] Figure 3 The utility model is a structural schematic diagram of the cables of the rigid support structure of the speed-increasing fan tube frame. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0020] In the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meaning of the terms can be understood according to the specific circumstances.

[0021] like Figure 1As shown, the cable support structure of the speed-increasing wind turbine tube frame described in the utility model comprises: a support platform 1, a support column assembly 2, an outer frame assembly 3, a cable support assembly 4, a first mandrel 5 and a second mandrel 6, a vertical support column assembly 2 at the top of the support platform 1, a first mandrel 5 is fixedly arranged on one side of the top of the support column assembly 2, a second mandrel 6 is fixedly arranged on one side of the top of the support column assembly 2, an outer wall of the first mandrel 5 is fixedly connected to the outer frame assembly 3 through the cable support assembly 4, an outer wall of the second mandrel 6 is fixedly connected to the outer frame assembly 3 through the cable support assembly 4, and the bottom of the outer frame assembly 3 is fixedly connected to the support platform 1 through a plurality of fixing rods. The outer frame assembly 3 is made and fixed by the cable support assembly 4, so as to improve the overall structural strength of the utility model and make it suitable for use in wind fields with relatively large wind speeds.

[0022] The support column assembly 2 includes a left support column 21 and a right support column 22, which are vertically fixed on the support platform 1 and symmetrically arranged. The frame is supported by two support groups at the same time.

[0023] The top of the left support column 21 is fixedly connected to the first core shaft 5, and the top of the right support column 22 is fixedly connected to the second core shaft 6. The first core shaft 5 and the second core shaft 6 are coaxial, and the coaxiality of the first core shaft 5 and the second core shaft 6 facilitates the installation of the blade.

[0024] like Figure 2 As shown, the outer frame assembly 3 includes: an inner ring 31, an outer ring 32, an edge ring 33, an arc-shaped support rod 34 and a fastener 35. A plurality of arc-shaped support rods 34 are arranged between the outer ring 32 and the inner ring 31. The arc-shaped support rods 34 are concave arc-shaped and are arranged in plurality. The arc-shaped support rods 34 are evenly distributed between the outer ring 32 and the inner ring 31. The fastener 35 is connected to the outer side of the outer ring 32 and the inner ring 31 for fixing. The edge ring 33 is fixedly arranged on the outer side of the outer ring 32. The arc-shaped support rods 34 are tightened by connecting rods 36. The inner wall of the arc-shaped support rods 34 of the inner ring, the outer ring 32 and the edge ring 33 is covered with a tensioned film to form a speed increasing tube. The arc-surface support rods 34 are concave arc-shaped and are evenly distributed between the outer ring 32 and the inner ring 31. In simple terms, the outer ring 32, the inner ring 31, and the arc-surface support rods 34 determine the shape of the speed-increasing fan tube. Several fixing components are connected to the outside of the outer ring 32 and the inner ring 31 for fixation. Multiple fasteners 35 are used to firstly limit the spacing between the inner ring 31 and the outer ring 32, and secondly to ensure strength. Similarly, the connecting rods 36 can both provide support and limit the spacing between the arc-shaped support rods 34 when covering the tensioned membrane, thereby ensuring structural stability.

[0025] The cable support assembly 4 includes: a left support part 41 and a right support part 42, one end of the left support part 41 is fixedly connected to the first mandrel 5, the other end of the left support part 41 is fixedly connected to the outer frame assembly 3, one end of the right support part 42 is fixedly connected to the second mandrel 6, and the other end of the right support part 42 is fixedly connected to the outer frame assembly 3. The left support part 41 and the right support part 42 are respectively used to support the two sides of the multi-frame assembly to improve the structural strength.

[0026] The left support part 41 includes a plurality of cables 43, wherein 8 to 12 cables 43 are provided and the cables 43 are regularly distributed in a circular array around the first core shaft 5. The forces received by the frame assembly are dispersed to the two core shafts through a plurality of groups of evenly distributed cables 43.

[0027] The structure of the left side support portion 41 is the same as that of the right side support portion 42 .

[0028] like Figure 3 As shown, the cable 43 includes: a cable body 431, a connecting piece 432 and a first tightening piece 433. One end of the cable body 431 is connected to the outer frame assembly 3 through the connecting piece 432, and one end of the cable body 431 is connected to the first mandrel 5 or the second mandrel 6 through the first tightening piece 433. The cable body 431 is used to appropriately reduce the weight of the overall structure, and the first tightening piece 433 can be used to tension and ensure strength.

[0029] It should be noted that in the specific implementation process, at least two cable bodies 431 are connected to the outer ring 32 on the same plane of the first core shaft 5, the connection points on the outer ring 32 are maintained at the same position, and the bottoms of the cable bodies 431 are separated into an angle.

[0030] A climbing frame is provided on the right supporting column 22 , and a lightning rod is provided on the top of the outer frame assembly 3 .

[0031] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this field, other modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. The speed-increasing fan tube frame cable support structure is characterized by: include: A supporting platform, a supporting column assembly, an outer frame assembly, a cable support assembly, a first core shaft and a second core shaft, the supporting column assembly is vertically fixed on the top of the supporting platform, the first core shaft is fixedly arranged on one side of the top of the supporting column assembly, the second core shaft is fixedly arranged on one side of the top of the supporting column assembly, the outer wall of the first core shaft is fixedly connected to the outer frame assembly through the cable support assembly, the outer wall of the second core shaft is fixedly connected to the outer frame assembly through the cable support assembly, and the bottom of the outer frame assembly is fixedly connected to the supporting platform through a plurality of fixing rods.

2. The speed-increasing fan tube frame cable support structure according to claim 1 is characterized in that: The support column assembly includes: a left support column and a right support column, the left support column and the right support column are vertically fixed on the supporting platform, and the left support column and the right support column are symmetrically arranged.

3. The speed-increasing fan tube frame cable support structure according to claim 2 is characterized in that: The top of the left support column is fixedly connected to the first core shaft, and the top of the right support column is fixedly connected to the second core shaft, and the first core shaft and the second core shaft are coaxial.

4. The speed-increasing fan tube frame cable support structure according to claim 3 is characterized in that: The outer frame assembly includes: an inner ring, an outer ring, an edge ring, arc-shaped struts and fasteners. A plurality of arc-shaped struts are arranged between the outer ring and the inner ring. The arc-shaped struts are concave arc-shaped and are arranged in plurality. The arc-shaped struts are evenly distributed between the outer ring and the inner ring. The fasteners are connected to the outer sides of the outer ring and the inner ring for fixing. The edge ring is fixedly arranged on the outer side of the outer ring. The arc-shaped struts are tightened by connecting rods.

5. The speed-increasing fan tube frame cable support structure according to claim 4 is characterized in that: The cable support assembly includes: a left support part and a right support part, one end of the left support part is fixedly connected to the first core shaft, the other end of the left support part is fixedly connected to the outer ring, one end of the right support part is fixedly connected to the second core shaft, and the other end of the right support part is fixedly connected to the inner ring; the left support part includes a plurality of cable connecting rods, and the cable connecting rods are provided with 8-12, and the cable connecting rods are regularly distributed in a circular array with the first core shaft as the center.

6. The speed-increasing fan tube frame cable support structure according to claim 5 is characterized in that: The structure of the left supporting part is the same as that of the right supporting part.

7. The speed increasing type wind turbine tube frame cable support structure according to claim 5 or 6, characterized in that: The cable connecting rod includes: a cable, a connecting piece and a first tightening piece. One end of the cable is connected to the outer frame assembly through a provided connecting piece, and one end of the cable is connected to the first core shaft or the second core shaft through a provided first tightening piece.

8. The speed increasing type wind turbine tube frame cable support structure according to any one of claims 2 to 6, characterized in that: A climbing frame is arranged on the right supporting column, and a lightning rod is arranged on the top of the outer frame assembly.

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