Auxiliary infiltration tool, gum dipping system and pultrusion equipment for producing wind power girder plate

Abstract

The utility model discloses an auxiliary infiltrating tool for producing a wind power girder plate, a gum dipping system and pultrusion equipment, and the auxiliary infiltrating tool for producing the wind power girder plate is provided with a first transition cavity, a first vacuum cavity, a second transition cavity and a second vacuum cavity which are sequentially communicated along the horizontal direction, exhaust holes communicated with the outside are formed in the tops and the bottoms of the first vacuum cavity and the second vacuum cavity; and a plurality of water passing through holes penetrating through the tool main body are formed in the auxiliary infiltration tool for producing the wind power girder plate. With the adoption of the structure, the auxiliary infiltration tool for producing the wind power girder plate is matched with the vacuum assembly, so that gas in impregnated fibers can be efficiently discharged, the porosity is reduced to an ideal state, and the performance of a product manufactured by pultrusion is improved; and the constant temperature assembly can keep the temperature of the tool constant, so that the fluidity and the pre-reaction degree of the glue are effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of pultrusion of fiber reinforced composite materials, and particularly relates to an auxiliary infiltration tooling, a resin impregnation system and a pultrusion device for producing wind power beam plates. Background Art

[0002] In the wind power field, the use of pultruded beam plates has become the mainstream. The pultrusion process has the advantages of long-term continuous production, high automation degree, high straightness of the plate, and stable product quality. It greatly improves the structural performance of the main beam of the wind turbine blade and saves the production cost of the blade.

[0003] The resin impregnation tank pultrusion process is a simple, extensive and general pultrusion process. The impregnation methods are divided into pressure yarn impregnation, straight groove impregnation and roller impregnation. Reinforcing materials such as fibers are fully impregnated with resin sizing in the resin impregnation tank and then enter the preforming tooling. Since the role of the preforming tooling is to arrange the impregnated fibers in an orderly manner and extrude the excess resin and air bubbles.

[0004] The porosity affects the fatigue, strength and other properties of the pultruded plate. The higher the porosity, the worse the performance quality of the product. However, at present, due to the limitations of the structure and principle of the preforming tooling, the porosity of the product cannot be reduced to an ideal state only through the preforming tooling, which limits the improvement of the product performance.

[0005] It has become an urgent matter to solve the above problems. Summary of the Utility Model

[0006] In order to solve the technical problem that at present, only the preforming tooling can be used to extrude the excess resin and air bubbles of the impregnated fibers, resulting in a low air bubble extrusion rate and the performance of the finally produced product is still not ideal, the utility model provides an auxiliary infiltration tooling, a resin impregnation system and a pultrusion device for producing wind power beam plates.

[0007] The technical solution is as follows:

[0008] The first aspect of the present application relates to an auxiliary infiltration tooling for producing wind power beam plates, including a tooling main body. In the tooling main body, there are a first transition cavity, a first vacuum cavity, a second transition cavity, and a second vacuum cavity that are sequentially connected in the horizontal direction. One end of the first transition cavity away from the first vacuum cavity is an inlet of the auxiliary infiltration tooling for producing wind power beam plates opened on the outer surface of the tooling main body. One end of the second vacuum cavity away from the second transition cavity is an outlet of the auxiliary infiltration tooling for producing wind power beam plates opened on the outer surface of the tooling main body. Both the first transition cavity and the second transition cavity are in a slit-like structure with a width in the horizontal direction greater than the thickness in the vertical direction. The widths of the first vacuum cavity and the second vacuum cavity in the horizontal direction are both greater than the widths of the first transition cavity and the second transition cavity in the horizontal direction. The thicknesses of the first vacuum cavity and the second vacuum cavity in the vertical direction are both greater than the thicknesses of the first transition cavity and the second transition cavity in the vertical direction. Exhaust holes communicating with the outside are opened at the top and bottom of the first vacuum cavity and the second vacuum cavity. A plurality of water passing through holes penetrating the tooling main body are opened on the tooling main body.

[0009] The second aspect of the present application relates to an impregnation system, including a vacuum pumping component, a constant temperature component, and the above-mentioned auxiliary infiltration tooling for producing wind power beam plates. The vacuum pumping component is connected to the first vacuum cavity and the second vacuum cavity through each exhaust hole, so that the first vacuum cavity and the second vacuum cavity are in a negative pressure state. The constant temperature component and each water passing through hole form a circulation loop for circulating constant temperature water flow, so that the temperature of the tooling main body remains constant.

[0010] The third aspect of the present application relates to a pultrusion device, including an impregnation tank, a preforming tooling, a pultrusion die, and the above-mentioned impregnation system. The preforming tooling and the impregnation tank are sequentially arranged in the direction away from the inlet of the auxiliary infiltration tooling for producing wind power beam plates. The inlet of the pultrusion die is connected to the outlet of the auxiliary infiltration tooling for producing wind power beam plates. After the fiber is impregnated in the impregnation tank, it is first preformed through the preforming tooling, then the gas in the glue is discharged through the impregnation system, and finally enters the pultrusion die to be pultruded into a wind power beam plate.

[0011] By adopting the above-mentioned auxiliary infiltration tooling, dipping system and pultrusion equipment for producing wind power beam plates, the four exhaust holes of the auxiliary infiltration tooling for producing wind power beam plates are connected to a vacuum pumping assembly, which continuously discharges the gas in the first vacuum cavity and the second vacuum cavity, making the first vacuum cavity and the second vacuum cavity in a vacuum state or close to a vacuum state. Thus, the gas in the fiber after dipping is efficiently discharged, the porosity is reduced to an ideal state, and the performance of the product after pultrusion is improved. Moreover, since the sizes of the first vacuum cavity and the second vacuum cavity are very large, it can still ensure that the impregnated fiber is still fully saturated when entering the mold in the subsequent process. At the same time, through the shaping and extrusion of the small-sized first transition cavity and the second transition cavity, the excess glue will be squeezed out and flow downward under the action of gravity and vacuum pressure, entering the two exhaust holes at the bottom of the first vacuum cavity and the second vacuum cavity. Therefore, these two exhaust holes also have the function of discharging the excess resin. In addition, the constant-temperature water continuously circulates in each water passing through-hole, which can keep the temperature of the tooling constant, thereby effectively controlling the fluidity and pre-reaction degree of the glue. In summary, by using the auxiliary infiltration tooling, dipping system and pultrusion equipment for producing wind power beam plates, the performance of the final product is greatly improved. Description of the Drawings

[0012] Figure 1 It is a schematic structural view of one perspective of the auxiliary infiltration tooling for producing wind power beam plates in Embodiment 1;

[0013] Figure 2 It is a schematic structural view of another perspective of the auxiliary infiltration tooling for producing wind power beam plates in Embodiment 1;

[0014] Figure 3 It is a cross-sectional view of the auxiliary infiltration tooling for producing wind power beam plates in Embodiment 1;

[0015] Figure 4 It is a cross-sectional view of the auxiliary infiltration tooling for producing wind power beam plates in Embodiment 2;

[0016] Figure 5 It is a schematic diagram of the cooperation relationship among the auxiliary infiltration tooling for producing wind power beam plates, the pultrusion die and the vacuum pumping assembly;

[0017] Figure 6 It is a schematic diagram of the cooperation relationship among the auxiliary infiltration tooling for producing wind power beam plates, the pultrusion die and the constant-temperature assembly;

[0018] Figure 7 It is a schematic diagram of the principle of the pultrusion equipment. Detailed Embodiments

[0019] The following further illustrates the present invention in conjunction with the embodiments and the drawings.

[0020] Embodiment 1:

[0021] As Figures 1 - 3 shown, an auxiliary infiltration tooling for manufacturing a wind power girder plate mainly includes a tooling main body 1. In the tooling main body 1, there are a first transition cavity 1a, a first vacuum cavity 1b, a second transition cavity 1c, and a second vacuum cavity 1d that are sequentially connected in the horizontal direction. Moreover, at both ends of the tooling main body 1 in the horizontal direction, there are respectively provided an auxiliary infiltration tooling inlet 1e for manufacturing a wind power girder plate and an auxiliary infiltration tooling outlet 1f for manufacturing a wind power girder plate. One end of the first transition cavity 1a away from the first vacuum cavity 1b is the auxiliary infiltration tooling inlet 1e opened on the outer surface of the tooling main body 1, and one end of the second vacuum cavity 1d away from the second transition cavity 1c is the auxiliary infiltration tooling outlet 1f opened on the outer surface of the tooling main body 1.

[0022] Therefore, the first transition cavity 1a, the first vacuum cavity 1b, the second transition cavity 1c, and the second vacuum cavity 1d are not only sequentially connected in the horizontal direction, but also penetrate the tooling main body 1 in the horizontal direction, thus forming a feeding channel. The inlet of this feeding channel is the auxiliary infiltration tooling inlet 1e for manufacturing a wind power girder plate, and the outlet of this feeding channel is the auxiliary infiltration tooling outlet 1f for manufacturing a wind power girder plate.

[0023] In this embodiment, both the first transition cavity 1a and the second transition cavity 1c are slit-like structures with a width in the horizontal direction greater than the thickness in the vertical direction. The structures of the first transition cavity 1a and the second transition cavity 1c are both adapted to the structure after fiber preforming, so as to be able to perform secondary shaping and extrusion on the preformed fibers. The excess glue will be extruded out and flow into the second transition cavity 1c and the second vacuum cavity 1d under the state of gravity and vacuum pressure.

[0024] It should be noted that the structures and sizes of the first transition cavity 1a and the second transition cavity 1c are usually designed to be exactly the same, or the second transition cavity 1c can be slightly smaller than the first transition cavity 1a, so as to minimize the porosity as much as possible.

[0025] In this embodiment, both the first vacuum chamber 1b and the second vacuum chamber 1d are large-scale chamber structures. Specifically, the widths of the first vacuum chamber 1b and the second vacuum chamber 1d in the horizontal direction are slightly larger than the widths of the first transition chamber 1a and the second transition chamber 1c in the horizontal direction. In particular, the thicknesses of the first vacuum chamber 1b and the second vacuum chamber 1d in the vertical direction are much larger than the thicknesses of the first transition chamber 1a and the second transition chamber 1c in the vertical direction, thus avoiding excessive extrusion of the impregnated fibers and enabling them to maintain a fully saturated state when entering the pultrusion die 6 in the subsequent process. The gases contained in the impregnated fibers in the first vacuum chamber 1b and the second vacuum chamber 1d in a vacuum state or close to a vacuum state will be further discharged, thereby further reducing the porosity of the subsequent pultruded product and improving the performance of the product.

[0026] Exhaust holes 1g communicating with the outside are provided at the top and bottom of both the first vacuum chamber 1b and the second vacuum chamber 1d. A plurality of water passing through holes 1h penetrating the tooling main body 1 are provided on the tooling main body 1. The constant temperature water flows continuously through each water passing through hole 1h to keep the temperature of the tooling main body 1 constant, thereby effectively controlling the fluidity and pre-reaction degree of the glue.

[0027] A positioning sunk platform 1k is recessed and formed on one side wall of the tooling main body 1 where the auxiliary impregnation tooling outlet 1f for producing the wind power girder plate is provided. The auxiliary impregnation tooling outlet 1f for producing the wind power girder plate is located at the middle position of the positioning sunk platform 1k. Therefore, the positioning sunk platform 1k can be docked with the inlet end of the subsequent pultrusion die 6 to maintain sealing and keep the stable vacuum state in the first vacuum chamber 1b and the second vacuum chamber 1d.

[0028] In this embodiment, a first observation window 1i and a second observation window 1j for observing the first vacuum chamber 1b and the second vacuum chamber 1d respectively are installed on the top of the tooling main body 1. The first observation window 1i and the second observation window 1j are made of glass or acrylic materials, so that the internal conditions of the first vacuum chamber 1b and the second vacuum chamber 1d can be conveniently observed. Correspondingly, exhaust holes 1g penetrating in the vertical direction are provided on both the first observation window 1i and the second observation window 1j.

[0029] In this embodiment, the tooling main body 1 is composed of an upper die and a lower die. The first transition chamber 1a, the first vacuum chamber 1b, the second transition chamber 1c, and the second vacuum chamber 1d are all formed at the joint position of the upper die and the lower die, which is convenient for processing.

[0030] Example 2:

[0031] Please refer to Figure 4, the main structure of this implementation is exactly the same as that of Embodiment 1, and the difference lies in that: an observation window is not provided at the top of the tooling main body 1, so that the cost can be reduced and the structural strength of the tooling main body 1 can be improved at the same time.

[0032] Embodiment 3:

[0033] Please refer to Figures 1 - 6 , an impregnation system, including a vacuum pumping assembly 2, a constant temperature assembly 3, and an auxiliary impregnation tooling for producing wind power beam plates in Embodiment 1 or Embodiment 2. The vacuum pumping assembly 2 is connected to the first vacuum cavity 1b and the second vacuum cavity 1d through each exhaust hole 1g, so that the first vacuum cavity 1b and the second vacuum cavity 1d are in a negative pressure state. The constant temperature assembly 3 and each water passing through hole 1h form a circulation loop for circulating constant temperature water flow, so that the temperature of the tooling main body 1 is kept constant.

[0034] Specifically, please refer to Figure 5 , the vacuum pumping assembly 2 includes a vacuum pump 2a, a sealed sealing barrel 2b, and a glue collecting cup 2c arranged in the sealing barrel 2b. The sealing barrel 2b and the exhaust holes 1g located at the top of the first vacuum cavity 1b and the top of the second vacuum cavity 1d are all connected to the air extraction port of the vacuum pump 2a through an air extraction pipe 2d. The exhaust holes 1g located at the bottom of the first vacuum cavity 1b and the bottom of the second vacuum cavity 1d are connected to the sealing barrel 2b through an intermediate pipe 2e. The top of the glue collecting cup 2c is open and is located directly below the outlet of the intermediate pipe 2e. That is: the two exhaust holes 1g at the top of the tooling main body 1 are directly connected to the air extraction port of the vacuum pump 2a through the air extraction pipe 2d. However, the discharged substances from the two exhaust holes 1g at the bottom of the tooling main body 1 include not only gas but also mixed glue. Therefore, the two exhaust holes 1g at the bottom of the tooling main body 1 are connected to the sealing barrel 2b through the intermediate pipe 2e, and the glue flowing out from the outlet end of the intermediate pipe 2e falls into the glue collecting cup 2c. The sealing barrel 2b is connected to the air extraction port of the vacuum pump 2a through the air extraction pipe 2d. Therefore, the gas in the sealing barrel 2b is continuously pumped away by the vacuum pump 2a to realize the separation of gas and glue.

[0035] Furthermore, valves are installed near the positions where the air extraction pipe 2d and the intermediate pipe 2e are connected to the mating parts, so as to be able to control the on-off of the pipeline to meet the requirements of special processes. At the same time, an active exhaust valve 2f is installed on the sealing barrel 2b, so that the sealing barrel 2b has a safety protection function.

[0036] Please refer to Figure 6 , the constant temperature assembly 3 includes a constant temperature water tank 3a. The constant temperature water tank 3a and each water passing through hole 1h form a circulation loop through a circulation pipeline 3b. A water pump is integrated in the constant temperature water tank 3a, so that the constant temperature water tank 3a can pump constant temperature hot water into the circulation loop to keep the tooling main body 1 in a constant temperature state.

[0037] Embodiment 4:

[0038] Please refer to Figures 1 - 7 , a pultrusion device, including a resin impregnation tank 4, a preforming tooling 5, a pultrusion die 6 and the resin impregnation system of Embodiment 3. The preforming tooling 5 and the resin impregnation tank 4 are arranged in sequence away from the inlet 1e of the auxiliary impregnation tooling for producing wind power beam plates. The inlet of the pultrusion die 6 is communicated with the outlet 1f of the auxiliary impregnation tooling for producing wind power beam plates. After the fiber is impregnated in the resin impregnation tank 4 and is in a fully protected state, it is preformed through the preforming tooling 5, that is: the fiber is guided and positioned to complete a rational layout, and enters the resin impregnation system together with the release cloth, enters from the first transition cavity 1a, is shaped and extruded, and the excess resin will be extruded out. Then it enters the first vacuum cavity 1b, and under the vacuum pressure, the gas carried by the impregnated fiber will be discharged. Then it enters the second transition cavity 1c, is shaped and extruded again, and the excess resin will be extruded out. Then it enters the second vacuum cavity 1d, and under the vacuum pressure, the gas carried by the impregnated fiber is discharged again. Finally, it enters the cavity of the pultrusion die 6. Thereby, the porosity of the product is greatly reduced and the product quality is improved.

[0039] In this embodiment, the thickness of the first transition cavity 1a and the second transition cavity 1c in the vertical direction is 1.01 - 1.5 times the thickness of the cavity of the pultrusion die 6 in the vertical direction to ensure that the amount of resin carried by the fiber is sufficient. This embodiment preferably is 1.02 times. At the same time, the thickness of the outlet 1f of the auxiliary impregnation tooling for producing wind power beam plates in the vertical direction is 0.9 - 3 times the thickness of the inlet 1e of the auxiliary impregnation tooling for producing wind power beam plates in the vertical direction. This embodiment preferably is 2 times.

[0040] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Those of ordinary skill in the art, under the inspiration of the present invention and without departing from the purpose and claims of the present invention, can make various similar representations. Such transformations all fall within the protection scope of the present invention.

Claims

1. An auxiliary infiltration tool for producing wind power beam plates, comprising a tool body (1), characterized in that: The tooling body (1) is provided with a first transition cavity (1a), a first vacuum cavity (1b), a second transition cavity (1c) and a second vacuum cavity (1d) which are connected in sequence in a horizontal direction; the end of the first transition cavity (1a) away from the first vacuum cavity (1b) is an auxiliary infiltration tooling inlet (1e) for producing wind power beam plates, which is opened on the outer surface of the tooling body (1); the end of the second vacuum cavity (1d) away from the second transition cavity (1c) is an auxiliary infiltration tooling outlet (1f) for producing wind power beam plates, which is opened on the outer surface of the tooling body (1); the first transition cavity (1a) and the second transition cavity (1c) are both larger than 1 / 4 in width in the horizontal direction. The invention relates to a slit-like structure with a thickness in the vertical direction; the width of the first vacuum cavity (1b) and the second vacuum cavity (1d) in the horizontal direction is greater than the width of the first transition cavity (1a) and the second transition cavity (1c) in the horizontal direction; the thickness of the first vacuum cavity (1b) and the second vacuum cavity (1d) in the vertical direction is greater than the thickness of the first transition cavity (1a) and the second transition cavity (1c) in the vertical direction; the top and bottom of the first vacuum cavity (1b) and the second vacuum cavity (1d) are both provided with exhaust holes (1g) connected to the outside; and the tooling body (1) is provided with a plurality of water through holes (1h) penetrating the tooling body (1).

2. The auxiliary infiltration tool for producing wind power beam plates according to claim 1 is characterized in that: A first observation window (1i) and a second observation window (1j) are installed on the top of the tooling body (1), respectively capable of observing the first vacuum chamber (1b) and the second vacuum chamber (1d), and the first observation window (1i) and the second observation window (1j) are both provided with the exhaust hole (1g) penetrating in the vertical direction.

3. The auxiliary infiltration tool for producing wind power beam plates according to claim 1 is characterized in that: A positioning sink (1k) is formed in a recessed manner on one side wall of the tooling body (1), and an auxiliary infiltration tooling outlet (1f) for producing wind power beam plates is located in the middle of the positioning sink (1k).

4. A dipping system, characterized in that: The invention comprises a vacuum pumping component (2), a constant temperature component (3) and an auxiliary infiltration tool for producing wind power beam plates according to any one of claims 1 to 3, wherein the vacuum pumping component (2) is connected to a first vacuum chamber (1b) and a second vacuum chamber (1d) through exhaust holes (1g), so that the first vacuum chamber (1b) and the second vacuum chamber (1d) are in a negative pressure state, and the constant temperature component (3) and the water through holes (1h) form a circulation loop for circulating constant temperature water flow, so that the temperature of the tool body (1) is kept constant.

5. The dipping system according to claim 4, characterized in that: The vacuum pumping assembly (2) comprises a vacuum pump (2a), a sealed sealing barrel (2b), and a glue collecting cup (2c) arranged in the sealing barrel (2b); the sealing barrel (2b) and the exhaust holes (1g) respectively located at the top of the first vacuum chamber (1b) and the top of the second vacuum chamber (1d) are connected to the exhaust port of the vacuum pump (2a) through an exhaust pipe (2d); the exhaust holes (1g) respectively located at the bottom of the first vacuum chamber (1b) and the bottom of the second vacuum chamber (1d) are connected to the sealing barrel (2b) through an intermediate pipe (2e); the top of the glue collecting cup (2c) is open and is located directly below the outlet of the intermediate pipe (2e).

6. The dipping system according to claim 5, characterized in that: An active exhaust valve (2f) is installed on the sealing barrel (2b).

7. The dipping system according to claim 4, characterized in that: The thermostatic component (3) comprises a thermostatic water tank (3a), which forms a circulation loop with each water through hole (1h) via a circulation pipeline (3b), and the thermostatic water tank (3a) is capable of pumping constant temperature hot water into the circulation loop.

8. A pultrusion device, characterized in that: It comprises a dipping tank (4), a preforming tool (5), a pultrusion die (6) and a dipping system as described in any one of claims 4 to 7, wherein the preforming tool (5) and the dipping tank (4) are arranged in sequence in a direction away from an inlet (1e) of an auxiliary dipping tool for producing wind turbine beam plates, and the inlet of the pultrusion die (6) is connected to an outlet (1f) of an auxiliary dipping tool for producing wind turbine beam plates.

9. The pultrusion equipment according to claim 8, characterized in that: The thickness of the first transition cavity (1a) and the second transition cavity (1c) in the vertical direction is 1.01 to 1.5 times the thickness of the cavity of the pultrusion die (6) in the vertical direction.

10. The pultrusion equipment according to claim 8, characterized in that: The thickness of the auxiliary infiltration tool outlet (1f) for producing wind power beam plates in the vertical direction is 0.9-3 times the thickness of the auxiliary infiltration tool inlet (1e) for producing wind power beam plates in the vertical direction.

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