Flow guide auxiliary material for vacuum infusion of wind power blade

Abstract

The utility model relates to the technical field of flow guide auxiliary materials, and discloses a flow guide auxiliary material for vacuum infusion of a wind power blade, which comprises a vacuum bag, a fiber accumulation body is arranged at the bottom of the vacuum bag, a circle of sealing gasket is fixedly arranged at the bottom end of the outer side of the vacuum bag, and a flow guide pipe is arranged between the vacuum bag and the fiber accumulation body. And the flow guide pipes are uniformly arranged on the fiber accumulation body at equal intervals. The vacuum bag is vacuumized after the vacuum pump is started, then resin is guided into the vacuum bag through the feeding pipe, negative pressure can be evenly distributed into the vacuum bag through the flow guide pipe, the resin can be distributed more evenly when flowing in the vacuum bag, the flowing speed of the resin can be increased, and therefore the resin can be evenly distributed in the vacuum bag. Meanwhile, a drainage net interwoven by polyester yarns is arranged on the outer side of the flow guide pipe, so that the flowing speed of the resin around the flow guide pipe can be further increased, and the effects of increasing the flowing speed of the resin in the vacuum bag and avoiding affecting the filling efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow guide auxiliary material for wind blade vacuum infusion, in particular to a flow guide auxiliary material for wind blade vacuum infusion. BACKGROUND

[0002] With the gradual exhaustion of renewable energy on the earth, the whole world has realized the importance of renewable energy and has begun to attach great importance to the development of wind power industry. As the most important component in wind turbine generator, the blade plays an irreplaceable role in the wind turbine generator. A wind power blade with excellent design, reliable quality and high efficiency is the key factor to ensure the normal operation of the whole wind turbine generator.

[0003] When the vacuum bag is fixed on the surface of the blade, the resin is extracted into the vacuum bag through the vacuum pump. However, the surface area of the wind turbine blade is large, the suction force is small far away from the vacuum pump, and the resin is relatively viscous and flows slowly. Therefore, it takes a lot of time to fill the vacuum bag with resin through the vacuum pump, which greatly affects the infusion efficiency. SUMMARY

[0004] The utility model discloses a flow guide auxiliary material for wind blade vacuum infusion, which is provided to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The flow guide auxiliary material for wind blade vacuum infusion comprises a vacuum bag, a fiber accumulation body is arranged at the bottom of the vacuum bag, a sealing gasket is fixedly installed at the outer bottom end of the vacuum bag, a flow guide pipe is arranged between the vacuum bag and the fiber accumulation body, and the flow guide pipes are equidistantly and uniformly arranged on the fiber accumulation body.

[0007] As a further scheme of the utility model, flow guide grooves are formed on the two sides of the fiber accumulation body, a connecting block is arranged between the flow guide pipes, and the connecting block can communicate between the flow guide pipes.

[0008] As a further scheme of the utility model, an extraction pipe is fixedly installed at the middle position of the connecting block, the extraction pipe extends to the outside through the vacuum bag upwards, and an extraction pump is connected to the extraction pipe.

[0009] As a further scheme of the utility model, a feeding pipe is fixedly installed on the side edge of the vacuum bag, the outer end of the feeding pipe is connected to a material tank, and the other end of the feeding pipe penetrates through the vacuum bag and communicates with the inside of the vacuum bag.

[0010] As a further scheme of the utility model, a polyester yarn interwoven drainage net is arranged on the outside of the flow guide pipe.

[0011] Compared with the prior art, the wind power blade vacuum infusion flow guide auxiliary material has the following beneficial effects:

[0012] In the utility model, through starting vacuum pump can the vacuum bag in vacuum, subsequently through feed pipe can the resin guide to vacuum bag, through the flow guide pipe can the negative pressure evenly distribute to vacuum bag, can make resin in vacuum bag flow distribution more evenly, and can accelerate the flow speed of resin, simultaneously the polyester yarn interweave's drainage net that sets up outside flow guide pipe can further accelerate the flow speed of resin around flow guide pipe, thereby reach improve resin in vacuum bag flow speed, avoid influence the effect of perfusion efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the splitting structure schematic diagram of wind power blade vacuum infusion flow guide auxiliary material that the utility model provides;

[0014] Figure 2 It is the overall structure schematic diagram of wind power blade vacuum infusion flow guide auxiliary material that the utility model provides;

[0015] Figure 3 It is the utility model Figure 1 The enlarged view of A in the utility model;

[0016] Figure 4 It is the partial structure schematic diagram of wind power blade vacuum infusion flow guide auxiliary material that the utility model provides.

[0017] In the drawing: 1, vacuum bag;2, extraction pipe;3, feed pipe;4, gasket;5, fiber accumulation;6, connecting block;7, flow guide pipe;8, flow guide groove. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the following further describes the utility model in combination with specific implementation manners.

[0019] In the description of the utility model, it should be explained that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated 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" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0020] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "set with", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0021] Refer to Figure 1 - Figure 4 The wind blade vacuum infusion guide auxiliary material, including vacuum bag 1, the bottom of vacuum bag 1 is provided with fiber accumulation body 5, a circle of sealing pad 4 is fixedly installed on the outside bottom end of vacuum bag 1, guide pipe 7 is arranged between vacuum bag 1 and fiber accumulation body 5, guide pipe 7 is equidistantly and uniformly arranged on fiber accumulation body 5.

[0022] In the embodiment, the flow guide groove 8 is formed on the both sides of the fiber accumulation body 5, the connecting block 6 is arranged between the guide pipes 7, and the connecting block 6 can communicate between the guide pipes 7. The middle position of the connecting block 6 is fixedly installed with the extraction pipe 2, the extraction pipe 2 extends to the outside by penetrating the vacuum bag 1 upwards, the extraction pipe 2 is connected with the vacuum pump, the feeding pipe 3 is fixedly installed on the side of the vacuum bag 1, the outer end of the feeding pipe 3 is connected in the material tank, the other end of the feeding pipe 3 penetrates the vacuum bag 1 and communicates with the inside of the vacuum bag 1, the vacuum pump is started to extract the vacuum in the vacuum bag 1, then the resin is guided into the vacuum bag 1 through the feeding pipe 3, the negative pressure is uniformly distributed in the vacuum bag 1 through the guide pipe 7, the resin can be distributed more uniformly when flowing in the vacuum bag 1, and the flow speed of the resin can be accelerated.

[0023] In the embodiment, the polyester yarn interwoven drainage net is laid on the outside of the guide pipe 7, and the polyester yarn interwoven drainage net arranged on the outside of the guide pipe 7 can further accelerate the flow speed of the resin around the guide pipe 7.

[0024] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: when using, first, the fiber accumulation body 5 is laid in the mold, then the flow guide pipe 7 is uniformly laid on the fiber accumulation body 5, then the vacuum bag 1 is covered on the flow guide pipe 7, the extraction pipe 2 is drawn out from the vacuum bag 1, finally the sealing pad 4 outside the feeding pipe 3 is adhered to the outside of the mold, so that the vacuum bag 1 is in a sealed state, then the extraction pipe 2 is connected to the vacuum pump, the feeding pipe 3 is connected to the material tank, after starting the vacuum pump, the vacuum bag 1 is vacuumized, then the resin is guided into the vacuum bag 1 through the feeding pipe 3, the negative pressure can be uniformly distributed in the vacuum bag 1 through the flow guide pipe 7, the resin can be distributed more uniformly when flowing in the vacuum bag 1, and the flow speed of the resin can be accelerated, at the same time, the polyester yarn interwoven drainage net arranged outside the flow guide pipe 7 can further accelerate the flow speed of the resin around the flow guide pipe 7, so as to improve the flow speed of the resin in the vacuum bag 1, and avoid affecting the pouring efficiency.

[0025] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A flow guide aid for use in the vacuum infusion of wind turbine blades, comprising a vacuum bag (1), characterised in that, The bottom of the vacuum bag (1) is provided with a fiber accumulation body (5), the outer bottom end of the vacuum bag (1) is fixedly installed with a ring of sealing pads (4), a flow guide pipe (7) is arranged between the vacuum bag (1) and the fiber accumulation body (5), and the flow guide pipes (7) are equidistantly and uniformly arranged on the fiber accumulation body (5).

2. The wind blade vacuum infusion flow guide aid material according to claim 1, characterized in that, Flow guide grooves (8) are formed on the two sides of the fiber accumulation body (5), and a connecting block (6) is arranged between the flow guide pipes (7), so that the flow guide pipes (7) are communicated.

3. The wind blade vacuum infusion flow guide aid material according to claim 2, characterized in that, A suction pipe (2) is fixedly installed at the middle position of the connecting block (6), the suction pipe (2) extends upward and penetrates the vacuum bag (1) to the outside, and a vacuum pump is connected to the suction pipe (2).

4. The wind blade vacuum infusion flow guide according to claim 1, wherein, A feeding pipe (3) is fixedly installed on the side edge of the vacuum bag (1), the outer end of the feeding pipe (3) is connected in a material tank, and the other end of the feeding pipe (3) penetrates the vacuum bag (1) and communicates with the inside of the vacuum bag (1).

5. The wind blade vacuum infusion flow guide according to claim 1, wherein, A polyester yarn interwoven drainage net is laid on the outside of the flow guide pipe (7).

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