Fan variable pitch cabinet

Abstract

The utility model discloses a fan variable pitch cabinet which comprises a first section bar pipe and a second section bar pipe which are spliced together, the baffle plate comprises a bearing surface and a connecting surface which are vertically arranged; the bearing face is located between the first profile pipe and the second profile pipe, the connecting face is located at the end of the first profile pipe and the end of the second profile pipe, and a through hole facilitating penetrating of a connecting piece is formed in the connecting face. The baffle is connected to the first profile pipe through the connecting piece. The heater has the advantages that the baffle is arranged between the first sectional material pipe and the second sectional material pipe, the effects of bearing and limiting installation of the first sectional material pipe and the second sectional material pipe are achieved, the problem that the second sectional material pipe loosens and falls off due to abrasion is solved, and the working stability and the use safety of the heater are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical manufacturing technical field, especially is involved in a fan variable pitch cabinet. BACKGROUND

[0002] The fan variable pitch cabinet is a key component of a wind turbine generator system, mainly used for controlling the blade pitch angle to adjust the rotational speed of the wind wheel, and ensuring the efficient and stable operation of the system under complex wind speed conditions. The fan variable pitch cabinet is usually installed inside the hub and rotates at high speed with the impeller, and is subjected to harsh working conditions such as vibration, centrifugal force, and temperature difference changes for a long time. The fan variable pitch cabinet usually adopts a profile structure as shown in FIG. 1, which is composed of a first profile pipe 1 and a second profile pipe 2, and at least a heater is required in the first profile pipe 1 to prevent electrical failure caused by low-temperature condensation or freezing. Figure 1

[0003] Because the heater is in a rotating and vibrating environment for a long time, the entire fan variable pitch cabinet will vibrate during force transmission. Because there is a gap between the first profile pipe 1 and the second profile pipe 2, the connection between the first profile pipe 1 and the second profile pipe 2 will be worn out, causing structural looseness, and even causing resonance effect, which reduces the overall performance. At the same time, because the power supply line and the control line of the heater are usually fixed on the cabinet body, when the first profile pipe 1 and / or the second profile pipe 2 deforms or the connection point displaces, the cable connector may be loose, the insulation layer may be worn out, and short circuit or short circuit may occur. In addition, if the structure is loose, the heater and / or the second profile pipe 2 may fall off, damaging the surrounding precision electrical equipment, causing short circuit, and even inducing fire and other adverse conditions.

[0004] To solve the above problems, the skilled person in the art usually adopts the following ways: 1. By thickening the profile or adding reinforcing ribs inside, but this improvement increases the weight of the cabinet, affects the dynamic balance of the impeller, and does not meet the lightweight requirement. 2. Welding or gluing at the connection between the first profile pipe 1 and the second profile pipe 2 to inhibit vibration transmission, but the solder or glue is prone to aging and cracking, and its service life is limited. 3. Increasing the number of bolts or lock nuts, which requires frequent maintenance in the later stage and cannot eliminate the wear problem of the profile caused by vibration.

[0005] Therefore, it is an important technical problem for the skilled person in the art to design a fan variable pitch cabinet that reduces looseness and falling caused by vibration and is lightweight. UTILITY MODEL CONTENTS

[0006] The utility model aims to solve the above problems in the prior art, and provides a fan variable pitch cabinet.

[0007] The utility model achieves the above-mentioned purpose by the following technical solutions:

[0008] ​A fan variable pitch cabinet comprises a first profiled pipe and a second profiled pipe which are spliced together, and a baffle which comprises a vertical bearing surface and a connecting surface; the bearing surface is located between the first profiled pipe and the second profiled pipe, the connecting surface is located at the end of the first profiled pipe and the second profiled pipe, and the connecting surface is formed with a through hole for facilitating the penetration of a connecting piece; the connecting piece connects the baffle to the first profiled pipe.

[0009] Preferably, the baffle is T-shaped, and the thickness of the connecting surface is not less than the thickness of the bearing surface; the length of the connecting surface is equivalent to the cross-sectional width of the first profiled pipe, and the length of the bearing surface is equivalent to the cross-sectional width of the second profiled pipe.

[0010] Preferably, the connecting surface is formed with a through hole for identification.

[0011] Preferably, the bearing surface is formed with a ventilation hole, and the setting direction of the ventilation hole is consistent with the setting direction of the first profiled pipe and / or the second profiled pipe.

[0012] Preferably, the cross section of the bearing surface is corrugated.

[0013] Preferably, there are two baffles, and each baffle is L-shaped.

[0014] Preferably, the bearing surface is further formed with a guide portion which protrudes from the surface of the bearing surface, the guide portion is located between the outer side wall of the second profiled pipe and the inner wall of the first profiled pipe, and the contour of the guide portion is equivalent to the outer contour of the second profiled pipe.

[0015] Preferably, the baffle is made of aluminum or aluminum alloy.

[0016] The advantages of the technical scheme of the utility model mainly lie in:

[0017] The baffle is arranged between the first profiled pipe and the second profiled pipe, plays a role of bearing and limiting the installation of the two pipes, reduces the problem of loosening and falling of the second profiled pipe caused by abrasion, and improves the working stability and use safety of the heater.

[0018] The ventilation hole and the through hole arranged on the bearing surface and the connecting surface respectively can reduce the overall weight of the baffle and meet the lightweight requirement.

[0019] The through hole on the connecting surface can be designed into different shapes or brand logos according to requirements. DRAWINGS

[0020] Figure 1 The background technical structure diagram of the utility model;

[0021] Figure 2 The structure diagram of the utility model;

[0022] Figure 3 The first embodiment of the utility model discloses the baffle structure first direction solid drawing;

[0023] Figure 4 The first embodiment of the utility model discloses the baffle structure second direction solid drawing;

[0024] Figure 5 The second embodiment of the utility model discloses the baffle structure drawing;

[0025] Figure 6 The third embodiment of the utility model discloses the baffle structure end view. DETAILED DESCRIPTION

[0026] The purpose, advantage and character of the utility model will be illustrated and explained by the non-restrictive description of the preferred embodiment. These embodiments are only typical examples of the application of the technical scheme of the utility model, and the technical scheme formed by equivalent replacement or equivalent transformation all falls within the scope of the utility model.

[0027] In the description of the scheme, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of description and simplification of description, and is not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Also, in the description of the scheme, with the operator as the reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0028] As shown in Figure 2 The utility model discloses a fan variable pitch cabinet, including first section bar pipe 1 and second section bar pipe 2, and the two are spliced together. Still include as Figures 3 to 4 The baffle 3 is made of aluminum or aluminum alloy, in addition, the baffle 3 can also be made of known materials including PP or PPS, and the specific material of the baffle 3 is not limited here.

[0029] The baffle 3 includes a vertically arranged bearing surface 31 and a connecting surface 32. The bearing surface 31 is located between the first profile tube 1 and the second profile tube 2, and the connecting surface 32 is located at the ends of the first profile tube 1 and the second profile tube 2. By setting the baffle between the first profile tube 1 and the second profile tube 2, it serves to support and limit the installation of both, thereby reducing the problem of the second profile tube 2 loosening and falling off due to wear, and improving the working stability and safety of the heater.

[0030] Furthermore, a through hole 320 is formed on the connecting surface 32 to facilitate the passage of the connector; the connector connects the baffle 3 to the first profile tube 1.

[0031] Specifically, such as Figure 3 or Figure 4 As shown, where Figure 3 The first embodiment of this utility model is shown. In this embodiment, the baffle 3 is T-shaped, and the thickness of the connecting surface 32 is not less than the thickness of the bearing surface 31. Preferably, the length of the connecting surface 32 is equivalent to the cross-sectional width of the first profile tube 1, and the length of the bearing surface 31 is preferably equivalent to the cross-sectional width of the second profile tube 2.

[0032] Furthermore, such as Figure 3 As shown, at least the connecting surface 32 has a through hole 301 for identification purposes; that is, the through hole 301 can be designed into different shapes or brand logos according to design requirements. In addition, some of the heater's cables can also pass through the through hole 301 for wiring purposes.

[0033] Furthermore, the bearing surface 31 is formed with such... Figure 4 The ventilation hole 302 shown is oriented in the same direction as the first profile tube 1 and / or the second profile tube 2. Providing the ventilation hole 302 on the connecting surface 32 reduces the force exerted by the fan on the baffle 3 from the wind turbine pitch control unit, while also reducing the impact of the baffle 3 on the ventilation of the wind turbine pitch control unit. Simultaneously, providing ventilation holes and through holes on the bearing surface 31 and the connecting surface 32 respectively reduces the overall weight of the baffle 3, meeting the requirements for lightweight design. Furthermore, the cross-section of the bearing surface 31 can also be corrugated, which not only supports the first profile tube 1 but also facilitates the processing of the ventilation hole 302.

[0034] like Figure 5 The illustration shows a second embodiment of the present invention. In this embodiment, there are two baffles 3, and each baffle 3 is L-shaped. The only difference between this embodiment and the first embodiment is the shape of the baffles 3. The other structures, including the through hole 301 and the ventilation hole 302, are the same and will not be described in detail here.

[0035] likeFigure 6 The third embodiment of this utility model is shown, which is a further improvement based on the above two embodiments. In this embodiment, a guide portion 311 protruding from its surface is also formed on the bearing surface 31. The guide portion 311 is located between the outer wall of the second profile tube 2 and the inner wall of the first profile tube 1, and its outline is equivalent to the outer outline of the second profile tube 2. The guide portion 311 and the bearing surface 31 support the second profile tube 2 and wrap its bottom surface, further improving the positional stability of the second profile tube 2. In addition, the baffle 3 can also be made of elastic materials such as rubber to reduce the vibration impact of the heater operation on the first profile tube 1 and / or the second profile tube 2.

[0036] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A wind turbine pitch control unit, comprising a first profile tube (1) and a second profile tube (2), which are assembled together; characterized in that: It also includes a baffle (3), which includes a vertically arranged bearing surface (31) and a connecting surface (32); the bearing surface (31) is located between the first profile tube (1) and the second profile tube (2), the connecting surface (32) is located at the ends of the first profile tube (1) and the second profile tube (2), and a through hole (301) is formed on the connecting surface (32) to facilitate the connection of the connector; the connector connects the baffle (3) to the first profile tube (1).

2. The wind turbine pitch control unit according to claim 1, characterized in that: The baffle (3) is T-shaped, and the thickness of the connecting surface (32) is not less than the thickness of the bearing surface (31); the length of the connecting surface (32) is equivalent to the cross-sectional width of the first profile tube (1), and the length of the bearing surface (31) is equivalent to the cross-sectional width of the second profile tube (2).

3. A wind turbine pitch control unit according to claim 2, characterized in that: At least the connecting surface (32) has a through hole (301) formed on it for marking purposes.

4. A wind turbine pitch control unit according to claim 3, characterized in that: Ventilation holes (302) are formed on the bearing surface (31), and the orientation of the ventilation holes (302) is consistent with the orientation of the first profile tube (1) and / or the second profile tube (2).

5. A wind turbine pitch control unit according to claim 4, characterized in that: The cross-section of the bearing surface (31) is corrugated.

6. A wind turbine pitch control unit according to claim 5, characterized in that: There are two baffles (3), and each baffle (3) is L-shaped.

7. A wind turbine pitch control unit according to claim 6, characterized in that: A guide portion (311) protruding from its surface is also formed on the bearing surface (31). The guide portion (311) is located between the outer wall of the second profile tube (2) and the inner wall of the first profile tube (1), and its outline is equivalent to the outer outline of the second profile tube (2).

8. A wind turbine pitch control unit according to claim 7, characterized in that: The baffle (3) is made of aluminum or aluminum alloy.

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