Blade blast heating ice melting device

Abstract

The utility model relates to the technical field of wind driven generators, and discloses a blade blast heating ice melting device which comprises a blade, the interior of the blade is in a cavity shape, an ice melting assembly is arranged in the blade, the ice melting assembly comprises a shearing web plate, and the shearing web plate and the inner side wall of the blade are fixedly installed in a sealed mode. The cavity located below the shearing web plate is a front edge channel, and the cavity located above the shearing web plate is a rear edge channel, so that internal air can flow to the rear edge channel from the front edge channel and then flow back to the front edge channel. By designing the liquid inlet pipe orifice and the liquid outlet pipe orifice and arranging the outer special-shaped curved liquid pipe, the inner special-shaped curved liquid pipe and the convex annular liquid pipe between the liquid inlet pipe orifice and the liquid outlet pipe orifice, a high-temperature liquid medium can be injected into the pipes in advance, and when air is conveyed into the heater shell through the air supply pipeline by the air blower, the airflow fan can be driven to rotate, so that air can be conveniently heated in the heater; ice melting is conducted in a wind heat mode, and the effect of heating and ice melting on the corresponding surfaces of the blades is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, in particular to a blade blast heating and ice-melting device. Background Art

[0002] Most wind farms are located at an altitude of 1600-1700 meters. They are foggy and humid all year round. They are typical mountain wind farms, and the lowest ambient temperature in winter can reach -16℃. When wind turbines are operating in cold climates, the surface of the blades of the turbines will usually be severely covered with ice in winter. After ice covering, the aerodynamic shape of the blades will change significantly, which will seriously affect the aerodynamic efficiency of the blades and reduce the power generation efficiency of the turbine. After ice covering, the loads of the turbines and blades will also increase. When the mutual difference between the loads and mass moments of the three blades reaches a certain level, it will usually cause vibration of the turbine, thereby affecting the safe and stable operation of the turbine. Usually, for the safe operation of the turbine, the turbine will stop running after the blades are covered with ice, so the icing of wind turbine blades will lead to serious power generation losses. To this end, we need to provide a blade blast heating and ice melting device. Utility Model Content

[0003] The utility model aims to provide a blade blast heating ice-melting device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blade blast heating and ice-melting device, comprising a blade, the interior of the blade is in the shape of a cavity, and the blade has an ice-melting component built in, the ice-melting component includes a shear web, which is sealed and fixedly installed with the inner side wall of the blade, and the cavity below the shear web is a leading edge channel, and the cavity above the shear web is a trailing edge channel, so that the internal air can flow from the leading edge channel to the trailing edge channel, and then flow back to the leading edge channel to form a reflux cycle, and a windshield is sealed and installed between the bottom of the shear web and the bottom of the inner cavity of the blade.

[0005] Preferably, the ice melting assembly further comprises the following structure: a blower fixedly disposed in the inner cavity at the root position of the blade.

[0006] Preferably, the output end of the blower is connected to an air supply duct, and the other end of the air supply duct is provided with an air guide duct through a heater structure, and the other end of the air guide duct passes through one side of the wind shield and extends to the other side of the wind shield.

[0007] Preferably, the heater structure specifically includes the following structures: a heater shell, wherein the outer wall of the heater shell is equidistantly and integrally mounted with fish-fin type heat collecting plates; and a cover seat, which is connected and arranged at the top and bottom of the heater shell.

[0008] Preferably, three groups of connecting channels are provided on both sides of the outer wall of the heater shell, the connecting channel on the left side is connected to a liquid inlet, and the connecting channel on the right side is connected to a liquid outlet, the liquid inlet and the liquid outlet are connected to arc-shaped liquid pipes, both ends of the arc-shaped liquid pipe are integrally connected to outer special-shaped curved liquid pipes, the outer walls of both ends of the arc-shaped liquid pipe are integrally connected to inner special-shaped curved liquid pipes, and a convex annular liquid pipe is integrally connected to the middle position of the arc-shaped liquid pipe.

[0009] Preferably, the cover seat has a baffle and a fixing frame built therein, and the fixing frame is rotatably connected to an air flow fan via a bearing.

[0010] The utility model provides a blade blast heating ice melting device, which has the following beneficial effects:

[0011] (1) The utility model starts the blower and the heater at the root of the blade. The blower sends the air to the heater through the air supply duct for heating, and then blows the hot air to the tip of the blade through the air guide pipe. Due to the design of the shear web, the hot air flows through the tip of the blade to the trailing edge channel, and then flows to the leading edge channel, forming a reflux cycle. The cycle is repeated, and the temperature is increased to achieve the purpose of melting ice.

[0012] (2) The utility model designs a liquid inlet and a liquid outlet, and arranges an outer special-shaped curved liquid tube, an inner special-shaped curved liquid tube and a convex annular liquid tube therebetween, so that a high-temperature liquid medium can be injected into the tube in advance. When the air volume is sent to the heater housing through the air supply duct by the blower, the air flow fan will be driven to rotate, so that the wind can heat the inside and melt the ice in the form of wind heat, thereby achieving the effect of heating and melting the ice on the corresponding surface of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the overall structure of the utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the overall structure of the utility model;

[0016] Figure 4 This is a three-dimensional view of the heater structure of the utility model;

[0017] Figure 5 This is an exploded view of the heater structure of the present invention.

[0018] In the figure: 111 blades, 2 ice melting components, 211 shear webs, 212 wind shields, 213 blowers, 214 air supply ducts, 215 heater structures, 216 air guide ducts, 2151 heater housings, 2152 fin-type collectors, 2153 cover bases, 2154 baffles, 2155 fixing frames, 2156 air flow fans, 221 liquid inlet openings, 222 liquid outlet openings, 223 arc-shaped liquid pipes, 224 outer special-shaped curved liquid pipes, 225 convex annular liquid pipes, and 226 inner special-shaped curved liquid pipes. DETAILED DESCRIPTION

[0019] 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.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Example 1

[0022] A preferred embodiment of the blade blast heating and ice melting device provided by the utility model is as follows Figure 1-5 As shown: a blade blast heating ice-melting device, comprising a blade 111, the interior of the blade 111 is in a cavity shape, and the blade 111 has an ice-melting component 2 built therein, the ice-melting component 2 includes a shear web 211, which is sealed and fixedly installed with the inner side wall of the blade 111, and the cavity below the shear web 211 is a leading edge channel, and the cavity above the shear web 211 is a trailing edge channel, so that the internal air can flow from the leading edge channel to the trailing edge channel, and then flow back to the leading edge channel to form a reflux cycle, and a windshield 212 is sealed and installed between the bottom of the shear web 211 and the bottom of the inner cavity of the blade 111;

[0023] The ice melting assembly 2 also includes the following structures: a blower 213, which is fixedly arranged in the inner cavity at the root position of the blade 111; an output end of the blower 213 is connected to an air supply duct 214, and the other end of the air supply duct 214 is provided with an air guide duct 216 through a heater structure 215, and the other end of the air guide duct 216 passes through one side of the wind shield 212 and extends to the other side of the wind shield 212;

[0024] In this embodiment, the blower 213 and the heater are started at the root of the blade. The blower 213 sends the air to the heater through the air supply duct 214 for heating, and then blows the hot air to the tip of the blade through the air guide duct 216. Due to the design of the shear web 211, the hot air flows through the tip of the blade to the trailing edge channel, and then flows to the leading edge channel, forming a reflux cycle. The cycle is repeated, and the temperature is increased to achieve the purpose of melting ice.

[0025] Example 2

[0026] See also Figure 1-Figure 5 , and on the basis of Example 1, it is further obtained that the heater structure 215 specifically includes the following structures: a heater shell 2151, and the outer wall circumference of the heater shell 2151 is equidistantly installed with fin-type heat collecting plates 2152; a cover seat 2153, which is connected and arranged at the top and bottom of the heater shell 2151; three groups of connecting channels are opened on both sides of the outer wall of the heater shell 2151, and the connecting channel on the left side is connected to the liquid inlet pipe port 221, and the connecting channel on the right side is connected to the liquid outlet pipe port 221. The opening 222, the liquid inlet 221 and the liquid outlet 222 are connected with an arc-shaped liquid pipe 223, both ends of the arc-shaped liquid pipe 223 are integrally connected with outer special-shaped curved liquid pipes 224, the outer walls of both ends of the arc-shaped liquid pipe 223 are integrally connected with inner special-shaped curved liquid pipes 226, and the middle position of the arc-shaped liquid pipe 223 is integrally connected with a convex annular liquid pipe 225; the cover seat 2153 is built with a baffle 2154 and a fixing frame 2155, and the fixing frame 2155 is rotatably connected with an airflow fan 2156 through a bearing.

[0027] In this embodiment, by designing the liquid inlet 221 and the liquid outlet 222, an outer special-shaped curved liquid tube 224, an inner special-shaped curved liquid tube 226 and a convex annular liquid tube 225 are arranged therebetween, and a high-temperature liquid medium can be injected into the tube in advance. When the air volume is sent to the heater housing 2151 through the air supply duct 214 by the blower 213, the air flow fan 2156 will be driven to rotate, thereby facilitating the heating of the wind inside, melting the ice in the form of wind heat, and achieving the effect of heating and melting the ice on the corresponding surface of the blade.

[0028] When in use, the blower 213 and the heater are started at the root of the blade, and the blower 213 sends air to the heater through the air supply duct 214. A high-temperature liquid medium is injected into the duct in advance. When the blower 213 sends the air to the heater housing 2151 through the air supply duct 214, the air flow fan 2156 is driven to rotate, so that the wind inside is heated. The hot air is then blown to the tip of the blade through the air guide duct 216. Due to the design of the shear web 211, the hot air flows through the tip of the blade to the trailing edge channel, and then flows to the leading edge channel, forming a reflux cycle. The cycle is repeated, and the temperature rises to achieve the purpose of melting ice.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A blade blast heating ice-melting device, comprising a blade (111), characterized in that: The interior of the blade (111) is in the shape of a cavity, and an ice melting assembly (2) is built into the blade (111). The ice melting assembly (2) comprises a shear web (211) which is sealed and fixedly mounted on the inner side wall of the blade (111), and the cavity below the shear web (211) is a leading edge channel, and the cavity above the shear web (211) is a trailing edge channel, so that the internal air can flow from the leading edge channel to the trailing edge channel, and then flow back to the leading edge channel to form a reflux cycle, and a windshield (212) is sealedly mounted between the bottom of the shear web (211) and the bottom of the inner cavity of the blade (111).

2. The blade blast heating ice-melting device according to claim 1, characterized in that: The ice melting assembly (2) further comprises the following structure: a blower (213) fixedly arranged in the inner cavity at the root position of the blade (111).

3. The blade blast heating ice-melting device according to claim 2, characterized in that: The output end of the blower (213) is connected to an air supply duct (214), and the other end of the air supply duct (214) is provided with an air guide duct (216) through a heater structure (215), and the other end of the air guide duct (216) passes through one side of the wind shield (212) and extends to the other side of the wind shield (212).

4. The blade blast heating ice-melting device according to claim 3, characterized in that: The heater structure (215) specifically includes the following structures: a heater shell (2151), wherein the outer wall of the heater shell (2151) is equidistantly and integrally mounted with fish-fin-type heat collecting plates (2152); and a cover seat (2153) which is connected and arranged at the top and bottom of the heater shell (2151).

5. The blade blast heating ice-melting device according to claim 4, characterized in that: Three groups of connecting channels are provided on both sides of the outer wall of the heater housing (2151); the connecting channel on the left side is connected to a liquid inlet (221), and the connecting channel on the right side is connected to a liquid outlet (222); the liquid inlet (221) and the liquid outlet (222) are connected to an arc-shaped liquid pipe (223); both ends of the arc-shaped liquid pipe (223) are connected to outer special-shaped curved liquid pipes (224); both ends of the arc-shaped liquid pipe (223) are connected to inner special-shaped curved liquid pipes (226); and a convex annular liquid pipe (225) is connected to the middle of the arc-shaped liquid pipe (223).

6. The blade blast heating ice-melting device according to claim 4, characterized in that: The cover seat (2153) is internally provided with a blocking net (2154) and a fixing frame (2155), and the fixing frame (2155) is rotatably connected to an air flow fan (2156) via a bearing.

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