CN216741850U

CN216741850U - Partitioned composite carbon fiber heating device

Info

Publication number: CN216741850U
Application number: CN202220314767.1U
Authority: CN
Inventors: 罗黄花
Original assignee: Jingdezhen Ronglan Technology Co ltd
Current assignee: Jingdezhen Ronglan Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-06-14
Anticipated expiration: 2032-02-16

Abstract

The utility model relates to a partitioned composite carbon fiber heating device, which comprises at least two heating zones, wherein the heating zones are provided with: carbon fiber wires or metal composite carbon fiber wires are adopted as heating wires, metal wires are adopted as electrodes and conducting wires, and glass fibers are adopted as insulators and fixed bodies to be woven together to form the carbon fiber heating element capable of being heated in different areas. The utility model adopts the power control, the heating time and the heating period of at least two heating areas to realize the regional differential heating of different heating areas, thereby selecting the thermal power density of each heating area according to the icing thickness, wherein the thermal power density of the area with thick icing is larger, and the thermal power density of the area with less icing is smaller, thereby improving the electric heating deicing performance on the basis of saving energy.

Description

Partitioned composite carbon fiber heating device

Technical Field

The utility model relates to the technical field of electrothermal deicing, in particular to a partitioned composite carbon fiber heating device applied to deicing of wind power blades.

Background

The electrothermal deicing technology applied to the wind power blade has three development stages, wherein in the first stage, resistance wires and parts needing deicing are simply laid to achieve the purpose of removing an ice layer on the surface; in the second stage, the inner and outer insulating layers and the inner and outer skins are adopted to protect the electric heating element, so that the internal equipment is not influenced by the heating element; and in the third stage, the output power of the power supply is controlled, and the heating time and the heating period are determined. The composite material is adopted to improve the electrothermal deicing performance, reduce the weight and reduce the energy consumption by regional differential heating.

Because the icing strengths of different areas on the surface of the wind power blade are different, if the heating units for electric heating are uniformly arranged on the surface of the blade, the heating power of each area of the blade is basically the same under the same electric heating power, the heating quantity of the position with higher icing strength is possibly insufficient, and the area with lower icing strength or without icing is possibly heated to have higher local temperature, so that the energy consumption is wasted, and the anti-icing/deicing effect of the surface of the blade is poor. Therefore, different electric heating power densities are correspondingly set according to the icing intensities of different areas, and the partition heating is realized, so that the layout of the blade electric heating device is more reasonable, the total power of the device is reduced, and the energy consumption is reduced.

At present, the heating device adopting the carbon fibers as the heating wires generally realizes the change of the electrical heating power density by changing the number of the carbon fibers, but the arrangement density difference of the heating wires is large when the electrical heating power density is changed by the mode, the deicing effect is poor if the distance between the adjacent heating wires is too wide, and the composite requirements of the blades cannot be met if the thickness of local heating elements is too thick if the heating wires are too dense. In addition, the wires of the heating elements in each subarea are connected with the control cabinet, and if the number of the heating elements is too large, the wiring is complicated, so that electric induction is easy to cause and lightning stroke is easy to cause.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a partitioned composite carbon fiber heating device, which realizes the partitioned differential heating of a heating element by the power control, the heating time and the heating period of each partition, thereby improving the electrothermal deicing performance.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a zoned composite carbon fiber heating apparatus comprising at least two heating zones, the heating zones having: carbon fiber wires or metal composite carbon fiber wires are adopted as heating wires, metal wires are adopted as electrodes and leads, glass fibers are adopted as insulators and fixed bodies to be woven together to form the carbon fiber heating element capable of being heated in different areas.

When the heating wire is connected, the end electrodes at the two ends of the two heating zones are connected with the outer end of the heating wire, the middle electrode between the two heating zones is connected with the inner end of the heating wire, and the end electrodes of the two heating zones are respectively connected with a lead which is connected with a power supply.

In order to improve the strength of the carbon fiber heating element, the insulator is interwoven with the heating wire in parallel, and the fixing body is interwoven with the heating wire vertically.

Preferably, the heating region includes a first heating region, a second heating region and a third heating region, the first heating region and the third heating region are combined and then share a middle electrode with the second heating region, and end electrodes of the first heating region, the second heating region and the third heating region are respectively connected with the conducting wire.

The utility model has the beneficial effects that: the utility model adopts the power control, the heating time and the heating period of at least two heating areas to realize the regional differential heating of different heating areas, thereby selecting the thermal power density of each heating area according to the icing thickness, wherein the thermal power density of the area with thick icing is larger, and the thermal power density of the area with less icing is smaller, thereby improving the electric heating deicing performance on the basis of saving energy.

Drawings

The utility model is further described with reference to the following figures and embodiments.

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1. the heater comprises a first heating zone, 2, a second heating zone, 3, a third heating zone, 4, a heating wire, 5, a conducting wire, 6, an insulator, 7, a fixing body, 8, an intermediate electrode, 9, a first end electrode, 10, a second end electrode and 11, a third end electrode.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the partitioned carbon fiber composite heating device has a first heating area 1, a second heating area 2 and a third heating area 3, wherein the first heating area 1 and the third heating area 3 are combined and then located on the left side, and the second heating area 2 is located on the right side.

The first heating zone 1, the second heating zone 2 and the third heating zone 3 are provided with: carbon fiber wires are adopted as heating wires 4, metal wires are adopted as electrodes and leads 5, glass fibers are adopted as insulators 6 and fixing bodies 7, and the carbon fiber heating elements capable of being heated in different areas are formed by weaving together in a specific mode, wherein the insulators 6 are interwoven with the heating wires 4 in parallel, and the fixing bodies 7 are interwoven with the heating wires 4 vertically.

The connection mode is as follows: the first heating area 1 and the third heating area 3 are combined up and down and then share a middle electrode 8 with the second heating area 2, a first end electrode 9 of the first heating area 1, a second end electrode 10 of the second heating area 2 and a third end electrode 11 of the third heating area 3 are respectively connected with a lead 5, the outer end of a heating wire 4 of the first heating area 1 is connected with the first end electrode 9, the inner end of the heating wire is connected with the middle electrode 8, the outer end of the heating wire 4 of the second heating area 2 is connected with the second end electrode 10, the inner end of the heating wire is connected with the middle electrode 8, the outer end of the heating wire 4 of the third heating area 3 is connected with the third end electrode 11, and the inner end of the heating wire is connected with the middle electrode 8.

The thickness of the carbon fiber heating element of the first heating area 1, the second heating area 2 and the third heating area 3 is not more than 0.5mm, and the distance between two adjacent heating wires 4 in the same heating area is not more than 1.5mm, so that the working stability of the carbon fiber heating element is ensured.

The working power density of the first heating zone 1, the second heating zone 2 and the third heating zone 3 is controlled to be 3Kw/m²。

The conventional non-partition heating deicing mode adopts integral simultaneous heating deicing, so that more ice and less ice receive the same heat, the deicing energy consumption is high, and the control is difficult.

The utility model adopts the power control, the heating time and the heating period of the first heating area 1, the second heating area 2 and the third heating area 3 to realize the regional differential heating of the first heating area 1, the second heating area 2 and the third heating area 3, thereby selecting the thermal power density of each heating area according to the icing thickness, wherein the thermal power density of the area with thick icing is larger, and the thermal power density of the area with less icing is smaller, thereby improving the electrothermal deicing performance on the basis of energy saving.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A zoned composite carbon fiber heating device comprises at least two heating zones and is characterized in that: the heating zone has: carbon fiber wires or metal composite carbon fiber wires are adopted as heating wires, metal wires are adopted as electrodes and leads, glass fibers are adopted as insulators and fixing bodies to be woven together to form a carbon fiber heating element capable of being heated in different areas;

the end electrodes at the two ends of the two heating zones are connected with the outer end of the heating wire, the middle electrode between the two heating zones is connected with the inner end of the heating wire, and the end electrodes of the two heating zones are respectively connected with a lead which is connected with a power supply.

2. The zoned composite carbon fiber heating apparatus of claim 1, wherein: the insulator is parallel to the heating wire, and the fixing body is perpendicular to the heating wire.

3. The zoned composite carbon fiber heating apparatus of claim 2, wherein: the heating area include first heating area, second heating area and third heating area, first heating area and third heating area combine back and share a middle electrode with the second heating area, the end electrode of first heating area, second heating area and third heating area is connected with the wire respectively.