Die for prefabricating blade root of fan blade

Abstract

The utility model discloses a fan blade prefabricated blade root die which comprises a lower die base, a plurality of hydraulic cylinders are installed on the left side face and the right side face of the lower die base, the upper ends of the hydraulic cylinders are connected with an upper die base, a first water tank and a second water tank are arranged on the side face of the lower die base and the surface of the upper die base respectively, and a first cooling channel and a second cooling channel are arranged in the upper die base and the lower die base respectively. A plurality of ejection cylinders are arranged on the surface of the lower die holder, the upper die holder and the lower die holder are designed to be semicircular, a half blade root can be manufactured at a time, two semicircular blade roots are spliced to form the blade root, and therefore the size of the die can be reduced, the weight of the die can be reduced, the occupied space of the die can be reduced, and the operable space for manufacturing a blade root prefabricated part can be increased; water is independently supplied to each first cooling channel through the first water tank, water is independently supplied to each second cooling channel through the second water tank, uniform cooling of the lower die base and the upper die base can be achieved, and the blade root forming speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blades, in particular to a prefabricated blade root mould for a wind turbine blade. Background Art

[0002] Wind turbine blades are mainly divided into blade root and blade body. The blade root is connected to the hub of the wind turbine and bears the load transmitted by the entire blade.

[0003] At present, the root of the blade is mainly made by the root prefabrication technology. The blade root prefabrication technology can be used to produce root punched blades and bolt sleeve embedded blades. Moreover, the root prefabrications of the suction side and the pressure side need to be made separately. In this way, it is necessary to make the root prefabrication molds of the suction side and the pressure side separately, which increases the cost, occupies a large amount of limited space, and has low work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated blade root mold for a wind blade to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a prefabricated blade root mold for a wind blade, comprising a lower mold base, a plurality of hydraulic cylinders are installed on the left and right sides of the lower mold base, an upper mold base is connected to the upper end of the hydraulic cylinder, and the upper mold base and the lower mold base are arranged in a semicircular shape. Since the size of the blade root is relatively large, the use of the semicircular upper mold base and the lower mold base can manufacture two spliced ​​semicircular blade roots, which can reduce the volume and weight of the mold and also reduce the cost of using the mold;

[0006] The side surface of the lower die seat and the surface of the upper die seat are respectively provided with a first water tank and a second water tank, the second water tank is located inside the arc groove of the upper die seat, the upper die seat and the lower die seat are respectively provided with a first cooling channel and a second cooling channel, stainless steel pipes are provided inside the first cooling channel and the second cooling channel, the first water tank and the second water tank are respectively connected to the corresponding stainless steel pipes, and the use of stainless steel pipes can prevent the upper die seat and the lower die seat from rusting, ensuring that the upper die seat and the lower die seat will not rust;

[0007] The surface of the lower die base is provided with a plurality of ejector cylinders, which are inserted into the lower die base. The ejector cylinders can be used to push out the finished blade root, which is helpful for demoulding.

[0008] Furthermore, a base and a reinforcement seat are provided on the left and right sides of the lower mold base, and the hydraulic cylinder passes through the reinforcement seat and is connected to the base. The upper and lower parts of the hydraulic cylinder are supported by the reinforcement seat and the base to ensure that the hydraulic cylinder is in a straight state, thereby controlling the lifting of the upper mold base more stably.

[0009] Furthermore, a main discharge pipe is provided on the side of the lower die seat, and the main discharge pipe is connected to the first cooling channel. The water after absorbing heat is collected through the main discharge pipe, which is helpful for the circulation cooling of the lower die seat.

[0010] Furthermore, a partition rod is provided on the upper side of the upper mold base, and the partition rod is fixedly connected to the second water tank to separate the upper mold base from the second water tank to prevent the heat of the upper mold base from being transferred to the second water tank.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) By designing the upper mold base and the lower mold base in a semicircular shape, half of the blade root can be manufactured at a time. The two semicircular blade roots are spliced ​​together to form a blade root. Such a mold can be reduced in size and weight, reducing the space occupied by the mold and increasing the operating space for the production of blade root preforms.

[0013] (2) The first water tank supplies water to each first cooling channel separately, and the second water tank supplies water to each second cooling channel separately, so that the lower mold base and the upper mold base can be evenly cooled, and the blade root forming speed can be improved. The second water tank is located inside the upper mold base to reduce the space occupied by the second water tank.

[0014] (3) The hydraulic cylinder is used to control the lifting and lowering of the upper die seat, and the mold closing of the upper die seat and the lower die seat can be controlled. After the blade root is formed, the ejection cylinder can push the blade root to move, so that the blade root is separated from the lower die seat, which is convenient for removing the blade root. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the connection between the lower die base and the ejection cylinder of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 It is a top view of the lower die base of the utility model.

[0019] In the figure: 1. lower die seat; 2. base; 3. hydraulic cylinder; 4. first water tank; 5. reinforcement seat; 6. double fork seat; 7. support rod; 8. ejector cylinder; 9. upper die seat; 10. second water tank; 11. first cooling channel; 12. second cooling channel; 13. main discharge pipe; 14. partition rod; 15. branch pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] Example:

[0022] See also Figure 1-4 The utility model provides a technical solution: a prefabricated blade root mold for a wind blade, comprising a lower mold base 1, a plurality of hydraulic cylinders 3 are installed on the left and right sides of the lower mold base 1, an upper mold base 9 is connected to the upper end of the hydraulic cylinder 3, the upper mold base 9 and the lower mold base 1 are arranged in a semicircular shape, the semicircular upper mold base 9 and the lower mold base 1 can manufacture half of the blade root, and multiple molds are used in combination, and after punching the half blade root, the blade root can be spliced ​​together;

[0023] The side surface of the lower die base 1 and the surface of the upper die base 9 are respectively provided with a first water tank 4 and a second water tank 10. The second water tank 10 is located inside the arc groove of the upper die base 9. The arc space of the upper die base 9 can be used to store the second water tank 10, thereby improving space utilization.

[0024] The upper die base 9 and the lower die base 1 are respectively provided with a first cooling channel 11 and a second cooling channel 12, and stainless steel pipes are provided inside the first cooling channel 11 and the second cooling channel 12. The first water tank 4 and the second water tank 10 are respectively connected to the corresponding stainless steel pipes. The stainless steel pipes are not easy to rust, and can also protect the upper die base 9 and the lower die base 1 from rust. The stainless steel pipes are arranged in a plate ring shape, which can better conduct heat to the upper die base 9 and the lower die base 1.

[0025] The surface of the lower die base 1 is provided with a plurality of ejector cylinders 8, which are inserted into the lower die base 1. When manufacturing the blade root, the piston rod of the ejector cylinder 8 is flush with the inner wall of the lower die base 1, which will not affect the manufacturing of the blade root.

[0026] In this embodiment, if Figure 1 As shown, the left and right sides of the lower die seat 1 are provided with a base 2 and a reinforcement seat 5, the hydraulic cylinder 3 passes through the reinforcement seat 5 and is connected to the base 2, the base 2 supports the lower end of the hydraulic cylinder 3, and the reinforcement seat 5 is fixed to the upper part of the hydraulic cylinder 3 to avoid the problem of tipping over when the hydraulic cylinder 3 bears weight, and the upper die seat 9 can also be lifted and lowered more smoothly.

[0027] In this embodiment, if Figure 3As shown, a plurality of support rods 7 are provided on the left and right sides of the upper mold base 9, the piston rod of the hydraulic cylinder 3 is connected to a double fork seat 6, and the double fork seat 6 is connected to the support rods 7. When the upper mold base 9 and the lower mold base 1 are closed, the support rods 7 are in contact with the lower mold base 1, so that precise closing can be achieved.

[0028] In this embodiment, if Figure 4 As shown, a main discharge pipe 13 is provided on the side of the lower mold base 1, and the main discharge pipe 13 is connected to the first cooling channel 11. The main discharge pipe 13 can be connected to the heat exchanger. The high-temperature water discharged from the main discharge pipe 13 is cooled by the heat exchanger and then flows back to the first water tank 4, thereby realizing the circulation cooling of the lower mold base 1.

[0029] In this embodiment, if Figure 3 As shown, a partition rod 14 is provided on the upper mold base 9, and the partition rod 14 is fixedly connected to the second water tank 10. The partition rod 14 supports the second water tank 10 to prevent the second water tank 10 from directly contacting the upper mold base 9, so that the water in the second water tank 10 can cool the upper mold base 9 more effectively.

[0030] In this embodiment, if Figure 4 As shown, a plurality of branch pipes 15 are provided on the surface of the first water tank 4, and the branch pipes 15 are connected to corresponding stainless steel pipes to pressurize the first water tank 4, and the first cooling channel 11 is cooled by the branch pipes 15 and the stainless steel pipes. The second water tank 10 is also connected to the corresponding stainless steel pipes using the branch pipes 15 to ensure that the second water tank 10 dissipates heat to the upper mold base 9. The second cooling channel 12 can be connected to another main discharge pipe 13, and the main discharge pipe 13 is connected to the heat exchanger.

[0031] Specifically, when in use, the hydraulic cylinder 3 drives the support rod 7 to move downward through the double fork seat 6, and the upper mold base 9 connected to the support rod 7 moves downward. When the support rod 7 contacts the lower mold base 1, the upper mold base 9 and the lower mold base 1 are molded together, and the material for manufacturing the blade root is sent between the upper mold base 9 and the lower mold base 1. After the first water tank 4 and the second water tank 10 are pressurized, the water in the first water tank 4 flows to the first cooling channel 11, and the water in the second water tank 10 flows to the second cooling channel 12, so that the upper mold base 9 and the lower mold base 1 are cooled synchronously and evenly, so that the material is cooled and solidified into a blade root. After the hydraulic cylinder 3 controls the upper mold base 9 to move upward, the upper mold base 9 is separated from the blade root, and several ejection cylinders 8 push the blade root to separate the blade root from the lower mold base 1, so that the blade root can be taken out.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated blade root mold for a wind blade, characterized in that: It comprises a lower die base (1), a plurality of hydraulic cylinders (3) are installed on the left and right sides of the lower die base (1), the upper ends of the hydraulic cylinders (3) are connected to an upper die base (9), and the upper die base (9) and the lower die base (1) are arranged in a semicircular shape; A first water tank (4) and a second water tank (10) are respectively provided on the side of the lower die seat (1) and the surface of the upper die seat (9); the second water tank (10) is located inside the arc groove of the upper die seat (9); a first cooling channel (11) and a second cooling channel (12) are respectively provided inside the upper die seat (9) and the lower die seat (1); stainless steel pipes are provided inside the first cooling channel (11) and the second cooling channel (12); the first water tank (4) and the second water tank (10) are respectively connected to the corresponding stainless steel pipes; A plurality of ejection cylinders (8) are provided on the surface of the lower die base (1), and the ejection cylinders (8) are inserted into the interior of the lower die base (1).

2. A prefabricated blade root mold for a wind blade according to claim 1, characterized in that: The left and right sides of the lower die base (1) are provided with a base (2) and a reinforcement base (5), and the hydraulic cylinder (3) passes through the reinforcement base (5) and is connected to the base (2).

3. The prefabricated blade root mold of a wind blade according to claim 1, characterized in that: A plurality of support rods (7) are provided on the left and right sides of the upper die seat (9); the piston rod of the hydraulic cylinder (3) is connected to a double fork seat (6), and the double fork seat (6) is connected to the support rods (7).

4. The prefabricated blade root mold of a wind blade according to claim 1, characterized in that: A main discharge pipe (13) is provided on the side of the lower die base (1), and the main discharge pipe (13) is connected to the first cooling channel (11).

5. The prefabricated blade root mold of a wind blade according to claim 1, characterized in that: A partition rod (14) is provided on the upper mold base (9), and the partition rod (14) is fixedly connected to the second water tank (10).

6. The prefabricated blade root mold of a wind blade according to claim 1, characterized in that: A plurality of branch pipes (15) are provided on the surface of the first water tank (4), and the branch pipes (15) are connected to corresponding stainless steel pipes.

Images