Double-fed wind power generation converter protection device

Abstract

The utility model relates to the related technical field of converter protection devices, and discloses a double-fed wind power generation converter protection device, which comprises a protection shell, a buffer mechanism is fixedly connected in the protection shell, and a clamping mechanism is arranged at one end of the buffer mechanism; and the buffer mechanism comprises a third spring, the third spring is fixedly connected to the interior of the protective shell, one end of the third spring is fixedly connected with a sliding block, one side of the sliding block is hinged to a connecting rod, and an inserting rod is slidably connected to the interior of the protective shell. According to the double-fed wind power generation converter protection device, through the arrangement of the clamping mechanism, the wind power generation converter can be protected by the mounting base and the protection panel, and in addition, the protection device does not need to be disassembled by using bolts, so that corresponding mounting and disassembling effects are conveniently performed; and the phenomenon that equipment shakes and collides due to the fact that connection is not firm due to the poor fixing effect can be effectively avoided, and then the equipment is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field related to converter protection devices, in particular to a double-fed wind power converter protection device. Background Art

[0002] The wind power converter is an excitation device added to the rotor side of a doubly-fed wind turbine generator. Its main function is to control the amplitude, phase, frequency, etc. of the excitation through the converter when the rotor speed n changes, so that the stator side can input constant frequency electricity to the power grid. It includes a power module, a control module, and a grid-connected module, and is widely used in doubly-fed wind power generation.

[0003] According to patent number CN218940926U, a doubly-fed wind power converter protection device is disclosed, including a protective cover and a side guard plate. There are two protective covers in total, and the two protective covers are symmetrically arranged. Adjustable side guard plates are provided on both sides between the two protective covers. A protective groove is provided inside the protective cover, and the protective cover is sleeved on the upper and lower ends of the doubly-fed converter through the protective groove. The sides are protected by the side guard plates. The protective cover is locked and fixed to the inner cavity of the wind turbine body by locking ears.

[0004] In the process of protecting the wind power converter of the doubly-fed wind power converter, although an adjustable side guard plate is provided between two protective covers, and the side guard plate is connected to the first waist hole on the protective cover to provide corresponding protection for the equipment, this connection method has a poor fixing effect, resulting in equipment shaking and collision due to loose connection, and corresponding improvements are needed. Utility Model Content

[0005] The utility model aims to provide a double-fed wind power converter protection device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a doubly-fed wind power converter protection device, comprising a protection shell, a buffer mechanism is fixedly connected to the inside of the protection shell, and a locking mechanism is provided at one end of the buffer mechanism;

[0007] The locking mechanism includes a mounting assembly and a supporting assembly, wherein the supporting assembly is arranged on one side of the mounting assembly;

[0008] The buffer mechanism includes a third spring, which is fixedly connected to the inside of the protective shell, one end of the third spring is fixedly connected to a slider, one side of the slider is hinged with a connecting rod, an insertion rod is slidably connected to the inside of the protective shell, one end of the insertion rod is fixedly connected to a support plate, a sliding groove is opened inside the protective shell, and the surface of the slider is slidably connected to the inside of the sliding groove.

[0009] Preferably, the mounting assembly includes a protective panel, the protective panel is hinged at one end of a connecting rod, a first spring is fixedly connected inside the protective panel, one end of the first spring is fixedly connected to a connecting long plate, a positioning strip is fixedly connected to the left side of the connecting long plate, a lever is fixedly connected to the front side of the connecting long plate, a positioning long seat is provided on the left side of the positioning strip, a support rod is fixedly connected to the bottom end of the back side of the protective panel, a second spring is provided on the top of the support rod, a guide groove is provided inside the protective panel, and the surface of the connecting long plate is slidably connected to the inside of the guide groove.

[0010] Preferably, a positioning hole is opened inside the positioning long seat, and a positioning strip is arranged on the left side of the positioning long strip. The surface of the positioning strip matches the inside of the positioning hole, so that the positioning strip can be easily inserted into the positioning hole to install and fix the mounting seat, and effectively protect the doubly fed wind power converter equipment.

[0011] Preferably, the support assembly includes a mounting seat, the mounting seat is fixedly connected to the top of the second spring, a threaded rod is threadedly connected to the inside of the top of the mounting seat, an upper clamping plate is rotatably connected to the bottom of the threaded rod, and a lower clamping plate is fixedly connected to the bottom of the mounting seat.

[0012] Preferably, a sliding hole is provided inside the mounting seat, and the surface of the support rod matches the inside of the sliding hole, so that the support rod can move under the support of the sliding hole, thereby facilitating the installation of the lower splint and supporting the equipment.

[0013] Preferably, a threaded hole is provided on the top of the mounting seat, and the surface of the threaded rod is threadably connected to the inside of the threaded hole.

[0014] Preferably, a through hole is opened inside the surface of the protective shell, and the surface of the insertion rod passes through the through hole opened inside the surface of the protective shell, so that the insertion rod can move under the limit of the through hole opened inside the surface of the protective shell, thereby preventing the device from impact.

[0015] Compared with the prior art, the utility model provides a double-fed wind power converter protection device, which has the following beneficial effects:

[0016] 1. The doubly-fed wind power converter protection device, through the provided locking mechanism, allows the connecting long plate to be locked into the inside of the positioning long seat on the mounting seat, and then the mounting seat is installed. At this time, the wind power converter equipment is placed on the top of the lower clamping plate at the mounting seat position inside the protective shell, and then the upper clamping plate is driven to move and clamp and fix the upper and lower sides of the equipment with the lower clamping plate, so that the mounting seat and the protection panel can protect the wind power converter. In addition, the protection device does not need to be disassembled with bolts, so it is convenient to carry out the corresponding installation and disassembly, and can effectively avoid the shaking and collision of the equipment caused by the loose connection due to poor fixing effect, thereby effectively protecting the equipment.

[0017] 2. The doubly-fed wind power converter protection device has a buffer mechanism. When the device is hit by an external impact, the force acts on the support plate and drives the insertion rod to move, thereby driving the protection panel to move, and then drives the connecting rod to rotate, thereby driving the slider to slide in the protection shell using the elastic support of the third spring and then reset accordingly, thereby providing a buffer protection for the wind power converter equipment when it is hit by an external impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a three-dimensional split cross-sectional view of the installation assembly of the utility model;

[0022] Figure 4 This is a three-dimensional split cross-sectional view of the support assembly of the utility model;

[0023] Figure 5 This is a three-dimensional diagram of the buffer mechanism of the utility model;

[0024] Figure 6 It is a three-dimensional cross-sectional view of the protective shell of the utility model.

[0025] In the figure: 1. protective shell; 2. locking mechanism; 21. mounting assembly; 211. protective panel; 212. long positioning seat; 213. long positioning strip; 214. connecting long board; 215. lever; 216. first spring; 217. support rod; 218. second spring; 22. support assembly; 221. mounting seat; 222. upper clamping plate; 223. threaded rod; 224. lower clamping plate; 3. buffer mechanism; 31. third spring; 32. slider; 33. connecting rod; 34. insert rod; 35. support plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides the following technical solutions:

[0029] Embodiment 1

[0030] Combination Figures 2 to 6 A doubly-fed wind power converter protection device comprises a protection housing 1, a buffer mechanism 3 is fixedly connected to the protection housing 1, and a locking mechanism 2 is arranged at one end of the buffer mechanism 3;

[0031] The locking mechanism 2 includes a mounting assembly 21 and a supporting assembly 22, wherein the supporting assembly 22 is disposed on one side of the mounting assembly 21;

[0032] The buffer mechanism 3 includes a third spring 31, which is fixedly connected to the inside of the protective shell 1. One end of the third spring 31 is fixedly connected to a slider 32, and one side of the slider 32 is hinged with a connecting rod 33. The inside of the protective shell 1 is slidably connected to an insertion rod 34, and one end of the insertion rod 34 is fixedly connected to a support plate 35. A slide groove is provided inside the protective shell 1, and the surface of the slider 32 is slidably connected to the inside of the slide groove. The mounting assembly 21 includes a protective panel 211, which is hinged to one end of the connecting rod 33, and the inside of the protective panel 211 is fixedly connected. A first spring 216 is fixedly connected, one end of the first spring 216 is fixedly connected to a connecting long plate 214, a positioning long strip 213 is fixedly connected to the left side of the connecting long plate 214, a shift rod 215 is fixedly connected to the front of the connecting long plate 214, a positioning long seat 212 is arranged on the left side of the positioning long strip 213, a support rod 217 is fixedly connected to the bottom end of the back side of the protection panel 211, a second spring 218 is arranged on the top of the support rod 217, a guide groove is provided inside the protection panel 211, and the surface of the connecting long plate 214 is slidably connected to the inside of the guide groove.

[0033] Furthermore, a positioning hole is opened inside the positioning long seat 212, and a positioning strip is arranged on the left side of the positioning long strip 213, and the surface of the positioning strip matches the inside of the positioning hole, so that the connecting long plate 214 is inserted into the inside of the positioning long seat 212 on the mounting seat 221, and then the mounting seat 221 is installed. At this time, the wind power inverter equipment is placed on the top of the lower clamping plate 224 at the position of the mounting seat 221 inside the protective shell 1, and then the upper clamping plate 222 is driven to move and clamp and fix the upper and lower sides of the equipment with the lower clamping plate 224, so that the mounting seat 221 and the protective panel 211 can protect the wind power inverter. In addition, the protective device does not need to be disassembled with bolts, so as to facilitate the corresponding installation and disassembly, and can effectively avoid the shaking and collision of the equipment caused by the loose connection due to poor fixing effect, thereby effectively protecting the equipment.

[0034] Embodiment 2

[0035] See also Figure 1-6 On the basis of the first embodiment, the support assembly 22 further comprises a mounting seat 221, the mounting seat 221 is fixedly connected to the top of the second spring 218, the top of the mounting seat 221 is internally threadedly connected with a threaded rod 223, the bottom end of the threaded rod 223 is rotatably connected with an upper clamping plate 222, the bottom end of the mounting seat 221 is fixedly connected with a lower clamping plate 224, a sliding hole is provided inside the mounting seat 221, the surface of the support rod 217 matches the inside of the sliding hole, a threaded hole is provided at the top of the mounting seat 221, and the surface of the threaded rod 223 is threadedly connected to the inside of the threaded hole.

[0036] Furthermore, a through hole is opened inside the surface of the protective shell 1, and the surface of the insertion rod 34 passes through the through hole opened inside the surface of the protective shell 1. When the device is hit by an external impact, the force acts on the support plate 35 and drives the insertion rod 34 to move, thereby driving the protective panel 211 to move, and then drives the connecting rod 33 to rotate, thereby driving the slider 32 to slide in the protective shell 1 using the elastic support of the third spring 31 and then reset accordingly, thereby providing a buffering protection for the wind power inverter equipment when it is hit by an external impact.

[0037] In actual operation, when the device is used, when the protective shell 1 is used, the mounting seat 221 is first installed, and the lever 215 is moved to drive the connecting long plate 214 to move and then drive the positioning strip 213 to move toward the first spring 216. At this time, the mounting seat 221 is inserted into the side of the protective panel 211, and the bottom end of the second spring 218 inside it is driven to squeeze the second spring 218 after contacting the support rod 217. Then, the mounting seat 221 continues to move downward to the bottom, and the lever 215 is released at this time. Under the elastic action of the first spring 216, the connecting long plate 214 is inserted into the positioning long seat 212 on the mounting seat 221, and then the mounting seat 221 is installed. At this time, the wind power converter equipment is placed on the top of the lower clamping plate 224 at the position of the mounting seat 221 inside the protective shell 1, and then the threaded rod 223 is rotated to drive the upper clamping plate 222 to move and clamp and fix the upper and lower surfaces of the equipment with the lower clamping plate 224, so that the mounting seat 221 and the protective panel 211 can protect the wind power converter;

[0038] In addition, when the equipment is being protected, when the device is hit by an external impact, the force acts on the support plate 35 and drives the insertion rod 34 to move, thereby driving the protection panel 211 to move, and then drives the connecting rod 33 to rotate, thereby driving the slider 32 to slide in the protective shell 1 using the elastic support of the third spring 31 and then reset accordingly, thereby providing a buffering protection for the wind power inverter equipment when it is hit by an external impact.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A doubly-fed wind power converter protection device, comprising a protection housing (1), characterized in that: A buffer mechanism (3) is fixedly connected inside the protective shell (1), and a locking mechanism (2) is provided at one end of the buffer mechanism (3); The locking mechanism (2) comprises a mounting assembly (21) and a supporting assembly (22), wherein the supporting assembly (22) is arranged on one side of the mounting assembly (21); The buffer mechanism (3) comprises a third spring (31), the third spring (31) is fixedly connected to the inside of the protective shell (1), one end of the third spring (31) is fixedly connected to a slider (32), one side of the slider (32) is hinged with a connecting rod (33), the inside of the protective shell (1) is slidably connected to an insertion rod (34), one end of the insertion rod (34) is fixedly connected to a support plate (35), a sliding groove is provided inside the protective shell (1), and the surface of the slider (32) is slidably connected to the inside of the sliding groove.

2. A doubly-fed wind power converter protection device according to claim 1, characterized in that: The mounting assembly (21) comprises a protection panel (211), the protection panel (211) is hinged to one end of a connecting rod (33), a first spring (216) is fixedly connected inside the protection panel (211), one end of the first spring (216) is fixedly connected to a connecting long plate (214), a positioning long strip (213) is fixedly connected to the left side of the connecting long plate (214), a shifting rod (215) is fixedly connected to the front side of the connecting long plate (214), a positioning long seat (212) is arranged on the left side of the positioning long strip (213), a support rod (217) is fixedly connected to the bottom end of the back side of the protection panel (211), a second spring (218) is arranged on the top of the support rod (217), a guide groove is arranged inside the protection panel (211), and the surface of the connecting long plate (214) is slidably connected to the inside of the guide groove.

3. A doubly-fed wind power converter protection device according to claim 2, characterized in that: A positioning hole is provided inside the positioning long seat (212), and a positioning strip is provided on the left side of the positioning long strip (213), and the surface of the positioning strip matches the inside of the positioning hole.

4. A doubly-fed wind power converter protection device according to claim 2, characterized in that: The support assembly (22) comprises a mounting seat (221), wherein the mounting seat (221) is fixedly connected to the top of the second spring (218), a threaded rod (223) is internally threadedly connected to the top of the mounting seat (221), an upper clamping plate (222) is rotatably connected to the bottom of the threaded rod (223), and a lower clamping plate (224) is fixedly connected to the bottom of the mounting seat (221).

5. A doubly-fed wind power converter protection device according to claim 4, characterized in that: A sliding hole is provided inside the mounting seat (221), and the surface of the support rod (217) matches the inside of the sliding hole.

6. A doubly-fed wind power converter protection device according to claim 4, characterized in that: A threaded hole is provided on the top of the mounting seat (221), and the surface of the threaded rod (223) is threadedly connected to the inside of the threaded hole.

7. A doubly-fed wind power converter protection device according to claim 1, characterized in that: A through hole is provided inside the surface of the protective shell (1), and the surface of the insertion rod (34) passes through the through hole provided inside the surface of the protective shell (1).

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