Sleeve Embedded Blade Root End Positioning Flange Pressure-holding Device

Abstract

The present invention discloses a pressure maintaining device for the root end positioning flange of a sleeve pre-buried blade, which comprises a root end positioning flange, a gas guiding component, two sealing rubber strips and two air pipes. A first groove is formed on one side of the root end positioning flange facing the mold, the gas guiding component is embedded in the first groove, the two sealing rubber strips are arranged at intervals and are evenly pressed between the root end positioning flange and the end face of the mold, the first groove is located between the two sealing rubber strips, one ends of the two air pipes are respectively inserted into the gas guiding component and communicated with the gas guiding component, and the other ends of the two air pipes are respectively exposed on the front edge end face and the rear edge end face of the root end positioning flange. The operation is simple and fast, no additional auxiliary materials are required for vacuum pressure maintaining, and the cost is reduced; the pressure maintaining process time of the root end positioning flange is greatly reduced; the pressure maintaining sealing effect is excellent, and the product quality has a qualitative leap.

Description

Technical Field

[0001] The present invention relates to a pressure maintaining device for the root end positioning flange of a screw sleeve embedded blade. Background Art

[0002] Wind energy is the most commercially valuable energy in the utilization of clean energy in the world and is an important part of the future renewable energy field. At present, the iteration speed of wind turbine blades is getting faster and faster, the blade size is getting larger and larger, and customers have higher and higher requirements for the forming cycle and quality of blades. As a result, higher requirements are put forward for the blade forming process. The blade forming process directly affects the quality and forming cycle of wind turbine blades. A good blade forming process is a decisive factor in ensuring the timely delivery of high-quality wind turbine generator blades to customers.

[0003] At present, all screw sleeve embedded blades inevitably need to maintain pressure on the root end positioning flange during the laying process to ensure that the product does not leak air at the root end during vacuum infusion, thereby avoiding serious quality accidents. However, the current root end positioning flange pressure maintaining process is to paste a sealing rubber strip on the root end positioning flange to close it with the mold end face, and paste sealing rubber strips on the inner surface or outer side of the mold and the positioning flange, and use a diversion net to conduct air and a vacuum bag film to seal for pressure maintaining. The existing pressure maintaining processes all have the deficiencies of cumbersome operation, long pressure maintaining process time, low pressure maintaining success rate, poor pressure maintaining effect, and frequent serious quality accidents of root end air leakage. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies existing in the prior art, and the present invention provides a pressure maintaining device for the root end positioning flange of a screw sleeve embedded blade.

[0005] The present invention is achieved by the following technical solutions:

[0006] A pressure maintaining device for the root end positioning flange of a screw sleeve embedded blade, which includes a root end positioning flange, a gas guiding component, two sealing rubber strips and two air pipes. A first groove is formed on one side of the root end positioning flange facing the mold, the gas guiding component is embedded in the first groove, the two sealing rubber strips are arranged at intervals and are both pressed between the root end positioning flange and the mold end face, the first groove is located between the two sealing rubber strips, one ends of the two air pipes are respectively inserted into the gas guiding component and communicated with the gas guiding component, and the other ends of the two air pipes respectively expose from the leading edge end face and the trailing edge end face of the root end positioning flange.

[0007] Furthermore, the pressure maintaining device for the root end positioning flange of the screw sleeve embedded blade further includes at least one blocking component, the blocking component is located between the sealing rubber strip and the gas guiding component, and the blocking component is pressed between the root end positioning flange and the mold end face.

[0008] Further, the number of the blocking members is two, and the two blocking members are respectively located on both sides of the air guiding member.

[0009] Further, the blocking member is a rubber-blocking air pipe.

[0010] Further, a second groove is formed on one side of the root end positioning flange facing the mold. The second groove and the first groove are respectively located inside and outside the root end positioning flange. The root end positioning flange pressure maintaining device for the pre-buried blade root end with a screw sleeve further includes a sealing strip, and the sealing strip is embedded in the second groove and pressed between the root end positioning flange and the end face of the mold.

[0011] Further, both ends of the sealing strip are respectively exposed on the front edge end face and the rear edge end face of the root end positioning flange.

[0012] Further, both the first groove and the second groove are U-shaped grooves;

[0013] And / or, the sealing strip is a D-shaped silica gel strip.

[0014] Further, the root end positioning flange pressure maintaining device for the pre-buried blade root end with a screw sleeve further includes a plurality of end sealing rubber strips. Both ends of the end sealing rubber strips are respectively connected to the two sealing rubber strips, and the plurality of end sealing rubber strips are respectively close to the front edge end face and the rear edge end face of the root end positioning flange.

[0015] Further, the air guiding member is a spiral wound tube.

[0016] Further, the sealing rubber strip is a high-temperature resistant sealing rubber strip.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The operation is simple and fast, without the need for additional auxiliary materials for vacuum pressure maintaining, and the cost is reduced.

[0019] 2. The pressure maintaining time is short and the success rate is extremely high, greatly reducing the time of the root end positioning flange pressure maintaining process, and achieving a leapfrog improvement in the main mold laying cycle.

[0020] 3. The pressure maintaining sealing effect is excellent, completely eliminating serious quality accidents caused by air leakage due to poor sealing of the root end positioning flange, and achieving a qualitative leap in product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic internal structure diagram of the root end positioning flange pressure maintaining device for the pre-buried blade root end with a screw sleeve in the embodiment of the present invention when in use.

[0022] Figure 2This is a partial structural schematic diagram of the pressure-holding device for the root-end positioning flange of the screw sleeve pre-embedded blade.

[0023] Explanation of reference numerals:

[0024] Root-end positioning flange 1

[0025] First groove 11

[0026] Second groove 12

[0027] Flange hole 13

[0028] Gas guiding component 2

[0029] Sealing rubber strip 3

[0030] Air pipe 4

[0031] Blocking component 5

[0032] Sealing strip 6

[0033] End sealing rubber strip 7

[0034] Mold 10

[0035] Mold end face 101 Detailed implementation manners

[0036] The descriptions of the following embodiments refer to the accompanying drawings to exemplify specific embodiments in which the present invention can be implemented.

[0037] As Figure 1 and Figure 2 shown, this embodiment discloses a pressure-holding device for the root-end positioning flange of the screw sleeve pre-embedded blade. The pressure-holding device for the root-end positioning flange of the screw sleeve pre-embedded blade includes a root-end positioning flange 1, a gas guiding component 2, two sealing rubber strips 3 and two air pipes 4. A first groove 11 is formed on one side of the root-end positioning flange 1 facing the mold 10. The gas guiding component 2 is embedded in the first groove 11. The two sealing rubber strips 3 are arranged at intervals and are evenly pressed between the root-end positioning flange 1 and the mold end face 101. The first groove 11 is located between the two sealing rubber strips 3. One ends of the two air pipes 4 are respectively inserted into the gas guiding component 2 and are communicated with the gas guiding component 2. The other ends of the two air pipes 4 are respectively exposed on the front edge end face and the rear edge end face of the root-end positioning flange 1.

[0038] The first groove 11 is located between two sealing rubber strips 3. The two sealing rubber strips 3 are pasted on the root-end positioning flange 1, and the two sealing rubber strips 3 are pressed between the root-end positioning flange 1 and the die end face 101. A sealing space is formed by closing the two sealing rubber strips 3 with the die end face 10. An air guiding component 2 is placed in the first groove 11 and annularly penetrates through the entire sealing space. Two air pipes 4 are respectively connected to the front-edge end face and the rear-edge end face of the root-end positioning flange 1 for air extraction and pressure maintenance. The operation is simple and fast, without the need for additional auxiliary materials such as vacuum bag films for vacuum sealing and pressure maintenance, and the cost is reduced; the pressure maintenance time is short and the success rate is extremely high, greatly reducing the pressure maintenance process time of the root-end positioning flange 1, and the main mold laying cycle has achieved a leapfrog improvement; the pressure maintenance sealing effect is excellent, completely eliminating serious quality accidents caused by air leakage due to poor sealing of the root-end positioning flange 1, and the product quality has undergone a qualitative leap.

[0039] The two air pipes 4 are respectively exposed on the front-edge end face and the rear-edge end face of the root-end positioning flange 1. An air guiding component 2 is placed in the first groove 11 of the root-end positioning flange 1, and the two air pipes 4 are connected at a position 20 cm away from the front-edge end face and the rear-edge end face of the root-end positioning flange 1. The two air pipes 4 extend beyond the front-edge end face and the rear-edge end face of the root-end positioning flange 1. One of the air pipes 4 is connected to a vacuum pump for air extraction, and the other air pipe 4 is connected to a pressure gauge for pressure maintenance. The operation is simple and fast.

[0040] Among them, the air guiding component 2 is a spiral winding pipe, with a simple structure and convenient use. The sealing rubber strip 3 is a high-temperature resistant sealing rubber strip. The air pipe 4 is a nylon air pipe. Preferably, the surface of the root-end positioning flange 1 must have no air leakage points, and the die end face 101 closed with the root-end positioning flange 1 must have no air leakage points.

[0041] The pressure maintaining device for the root-end positioning flange of the screw sleeve pre-embedded blade further includes at least one blocking component 5. The blocking component 5 is located between the sealing rubber strip 3 and the air guiding component 2, and the blocking component 5 is pressed between the root-end positioning flange 1 and the die end face 101. The sealing rubber strip 3 is pressed between the root-end positioning flange 1 and the die end face 101 and deforms. By having the blocking component 5 located between the sealing rubber strip 3 and the air guiding component 2 and used to block the sealing rubber strip 3, the sealing rubber strip 3 will not be extruded into the first groove 11, and the pressure maintaining and sealing effect of the pressure maintaining device for the root-end positioning flange of the screw sleeve pre-embedded blade is ensured.

[0042] In this embodiment, the number of the blocking components 5 is two, and the two blocking components 5 are respectively located on both sides of the air guiding component 2. The two blocking components 5 can respectively block the two sealing rubber strips 3. The blocking component 5 is a rubber-blocking air pipe 4.

[0043] On one side of the root end positioning flange 1 facing the mold 10, a second groove 12 is provided. The second groove 12 and the first groove 11 are respectively located on the inner side and the outer side of the root end positioning flange 1. The screw sleeve pre-embedded blade root end positioning flange pressure-holding device further includes a sealing strip 6. The sealing strip 6 is embedded in the second groove 12 and pressed between the root end positioning flange 1 and the mold end face 101. The first groove 11 is on the outer side close to the root end positioning flange 1. The root end positioning flange 1 is provided with a flange hole 13. The flange hole 13 is on the inner side close to the root end positioning flange 1. The second groove 12 is located between the flange hole 13 and the first groove 11. By embedding the sealing strip 6 in the second groove 12, the sealing strip 6 is prevented from shifting and misaligning during pressure sealing, further enhancing the pressure-holding and sealing effect.

[0044] Wherein, both ends of the sealing strip 6 respectively protrude from the front edge end face and the rear edge end face of the root end positioning flange 1 to ensure the sealing effect. The sealing strip 6 is a D-shaped silica gel strip. Both the first groove 11 and the second groove 12 are U-shaped grooves, which are convenient for processing and manufacturing.

[0045] The screw sleeve pre-embedded blade root end positioning flange pressure-holding device further includes a plurality of end sealing rubber strips 7. Both ends of the end sealing rubber strips 7 are respectively connected to two sealing rubber strips 3, and the plurality of end sealing rubber strips 7 are respectively close to the front edge end face and the rear edge end face of the root end positioning flange 1. By connecting both ends of the end sealing rubber strips 7 to two sealing rubber strips 3 respectively, the pressure-holding and sealing effect is further improved by the two sealing rubber strips 3 and the plurality of end sealing rubber strips 7, completely eliminating the serious quality accidents caused by air leakage due to poor sealing of the root end positioning flange 1, and the product quality has achieved a qualitative leap.

[0046] In this embodiment, the number of the plurality of end sealing rubber strips 7 is four, and every two end sealing rubber strips 7 are respectively close to the front edge end face and the rear edge end face of the root end positioning flange 1. The two end sealing rubber strips 7 are transversely pasted at 3 cm and 5 cm away from the front and rear edge end faces of the root end positioning flange 1. By overlapping the two end sealing rubber strips 7 with the two sealing rubber strips 3, then the root end positioning flange 1 and the mold end face 101 are locked and closed, and air pipes 4 are used to perform air extraction and pressure-holding at the front and rear edges respectively.

[0047] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A pressure-holding device for positioning the root end of a blade embedded with a screw sleeve flange, characterized in that, It includes a root-end positioning flange, an air guiding component, two sealing rubber strips and two air pipes. A first groove is formed on the side of the root-end positioning flange facing the mold. The air guiding component is embedded in the first groove. The two sealing rubber strips are arranged at intervals and are both pressed between the root-end positioning flange and the mold end face. The first groove is located between the two sealing rubber strips. One ends of the two air pipes are respectively inserted into the air guiding component and communicated with the air guiding component. The other ends of the two air pipes are respectively exposed on the front-edge end face and the rear-edge end face of the root-end positioning flange; The screw sleeve pre-embedded blade root-end positioning flange pressure maintaining device further includes at least one blocking component. The blocking component is located between the sealing rubber strip and the air guiding component, and the blocking component is pressed between the root-end positioning flange and the mold end face; A second groove is formed on the side of the root-end positioning flange facing the mold. The second groove and the first groove are respectively located on the inner side and the outer side of the root-end positioning flange. The screw sleeve pre-embedded blade root-end positioning flange pressure maintaining device further includes a sealing strip. The sealing strip is embedded in the second groove and is pressed between the root-end positioning flange and the mold end face; The screw sleeve pre-embedded blade root-end positioning flange pressure maintaining device further includes a plurality of end sealing rubber strips. Two ends of each end sealing rubber strip are respectively connected to the two sealing rubber strips, and the plurality of end sealing rubber strips are respectively close to the front-edge end face and the rear-edge end face of the root-end positioning flange.

2. The pressure maintaining device for the root end positioning flange of the screw sleeve embedded blade according to claim 1, characterized in that, The number of the blocking components is two, and the two blocking components are respectively located on both sides of the air guiding component.

3. The pressuring-keeping device for the root-end positioning flange of the screw sleeve embedded blade according to claim 1, wherein The blocking component is a rubber-blocking air pipe.

4. The screw sleeve embedded blade root end positioning flange pressure maintaining device according to claim 1, characterized in that, Two ends of the sealing strip are respectively exposed on the front-edge end face and the rear-edge end face of the root-end positioning flange.

5. The pressure maintaining device for the root end positioning flange of the screw sleeve embedded blade according to claim 1, characterized in that, Both the first groove and the second groove are U-shaped grooves; And / or, the sealing strip is a D-shaped silica gel strip.

6. The pressure-holding device for the root-end positioning flange of the screw sleeve pre-embedded blade as described in claim 1, wherein, The air guiding component is a spiral winding pipe.

7. The pressure-holding device for the root-end positioning flange of the screw sleeve pre-embedded blade according to claim 1, characterized in that, The sealing rubber strip is a high-temperature resistant sealing rubber strip.

Images