Tie bar structure for producing pressure-resistant shell

Abstract

The utility model discloses a tie piece structure for producing a pressure-resistant shell, which relates to the technical field of wind driven generators and comprises three spherical shells, the three spherical shells are fixedly connected with one another, an upper shell is fixedly mounted at the top of each spherical shell, and a lower shell is fixedly mounted at the bottom of each spherical shell. A first end base, a second end base and a third end base are fixedly installed on the outer side of the spherical shell, a fourth end base is fixedly installed on the upper shell located above the third end base, two inner pull rings are fixedly installed in the spherical shell, and a second flange is fixedly installed on the top of the upper shell. The second reinforcing rib and the first reinforcing rib are arranged on the outer side of the upper shell and the outer side of the lower shell respectively, the connecting strength of the upper shell, the lower shell and the spherical shell can be improved, meanwhile, the two inner pull rings are arranged in the spherical shell, transverse pulling force can be achieved on the spherical shell through the two inner pull rings, and therefore the phenomena of deformation and stress concentration of parts are reduced, and the service life of the spherical shell is prolonged. And the voltage-withstanding stability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a bracing structure for producing pressure-resistant housings. Background Technology

[0002] The wind turbine casing is an important component of the wind turbine, mainly serving to protect the internal core components and maintain the shape and strength of the blades. The wind turbine casing typically includes an upper casing, a middle casing, and a lower casing.

[0003] Some wind turbine casings are integrally cast from molten metal. Casting allows for the one-time molding of complex shapes and large-sized components, improving production efficiency and casing consistency. However, some wind turbine casings, after casting, may not have adequately considered pressure resistance requirements in their design. This can lead to the casing being subjected to significant pressure after the equipment is installed and put into use, reducing its lifespan and causing cracks. This can affect the normal operation of the equipment later on. In addition, when external equipment is installed on the wind turbine casing, the torque and vibration generated during operation can create gaps at the connection between the equipment and the wind turbine casing, leading to instability in the later operation of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a bracing structure for producing pressure-resistant shells, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tie rod structure for producing pressure-resistant shells includes three spherical shells, which are fixedly connected to each other. An upper shell is fixedly installed on the top of each spherical shell, and a lower shell is fixedly installed on the bottom of each spherical shell. A first end seat, a second end seat, and a third end seat are fixedly installed on the outer side of each spherical shell, and a fourth end seat is fixedly installed on the upper shell located above the third end seat. Two inner pull rings are fixedly installed inside each spherical shell.

[0007] Preferably, a second flange is fixedly installed on the top of the upper shell, a second reinforcing rib is fixedly connected between the second flange and the upper shell, and a tie rod is fixedly connected between the two second flanges. By setting multiple second reinforcing ribs, the rigidity and stability of the upper shell structure can be improved.

[0008] Preferably, a first flange is fixedly installed at the bottom of the lower housing, and a plurality of first reinforcing ribs are fixedly connected between the lower housing and the first flange. By setting a plurality of first reinforcing ribs, the rigidity and stability of the lower housing structure can be improved.

[0009] Preferably, the first end seat, the third end seat, and the fourth end seat are each provided with a connecting groove on one side, and a plurality of threaded grooves are provided on one side of the connecting groove. The two adjacent second end seats of the two spherical shells are fixedly connected to each other and form a U-shaped longitudinal cross section. The arrangement of the first end seat, the second end seat, the third end seat, and the fourth end seat facilitates the connection and installation of external equipment. The opening of the connecting groove can increase the connection strength between the external equipment and the first end seat, the third end seat, and the fourth end seat.

[0010] Preferably, a fixing seat is fixedly installed on the spherical shell located between the second end seat and the third end seat.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention discloses a tie structure for producing pressure-resistant shells, wherein a second reinforcing rib and a first reinforcing rib are respectively provided on the outer side of the upper shell and the lower shell, which can improve the connection strength between the upper shell, the lower shell and the spherical shell. At the same time, two inner pull rings are provided inside the spherical shell, which can be used to achieve a lateral tension on the spherical shell, thereby reducing the deformation and stress concentration of the components and improving the pressure resistance stability of the equipment.

[0013] Connecting slots are provided on one side of the first end seat, the third end seat, and the fourth end seat, allowing the connecting end of the external equipment to be inserted into the connecting slots and fixedly connected to the first end seat or the second end seat, the third end seat, and the fourth end seat, further improving the connection stability between the external equipment and the spherical shell. In addition, the connecting braces between the two second flanges prevent structural deformation during casting. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the spherical shell structure of this utility model;

[0016] Figure 3 This is a perspective view of the spherical shell, upper shell, and lower shell of this utility model.

[0017] In the diagram: 1. Spherical shell; 2. Upper shell; 3. Lower shell; 4. First end seat; 5. Second end seat; 6. Third end seat; 7. Fourth end seat; 8. Inner pull ring; 9. First flange; 10. First reinforcing rib; 11. Second flange; 12. Second reinforcing rib; 13. Connecting groove; 14. Threaded groove; 15. Fixing seat; 16. Tie rod. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-3 As shown, the present invention provides a tie rod structure for producing pressure-resistant shells, comprising three spherical shells, which are fixedly connected to each other. An upper shell is fixedly installed on the top of each spherical shell, and a lower shell is fixedly installed on the bottom of each spherical shell. A first end seat, a second end seat, and a third end seat are fixedly installed on the outer side of each spherical shell, and a fourth end seat is fixedly installed on the upper shell located above the third end seat. Two inner pull rings are fixedly installed inside each spherical shell.

[0020] like Figure 1 As shown, a second flange 11 is fixedly installed on the top of the upper shell 2, and a second reinforcing rib 12 is fixedly connected between the second flange 11 and the upper shell 2. By setting multiple second reinforcing ribs 12, the rigidity and stability of the upper shell 2 structure can be improved. A first flange 9 is fixedly installed on the bottom of the lower shell 3, and multiple first reinforcing ribs 10 are fixedly connected between the lower shell 3 and the first flange 9. A tie rod 16 is fixedly connected between the two second flanges 11. By setting multiple first reinforcing ribs 10, the rigidity and stability of the lower shell 3 structure can be improved.

[0021] like Figures 1-3 As shown, the first end seat 4, the third end seat 6, and the fourth end seat 7 are respectively provided with connecting grooves 13 on one side. Multiple screw grooves 14 are provided on one side of the connecting grooves 13. The two adjacent second end seats 5 of the two spherical shells 1 are fixedly connected to each other and form a U-shaped longitudinal section. The arrangement of the first end seat 4, the second end seat 5, the third end seat 6, and the fourth end seat 7 facilitates the connection and installation of external equipment. The opening of the connecting grooves 13 can increase the connection strength between the external equipment and the first end seat 4, the second end seat 5, the third end seat 6, and the fourth end seat 7. A fixing seat 15 is fixedly installed on the spherical shell 1 located between the second end seat 5 and the third end seat 6.

[0022] It should be noted that this utility model is a tie structure for producing pressure-resistant shells. Multiple second reinforcing ribs 12 are fixedly installed on the outside of the upper shell 2, and multiple first reinforcing ribs 10 are fixedly installed on the outside of the lower shell 3. This can increase the local rigidity and strength of the upper shell 2 and the lower shell 3, so that the upper shell 2 and the lower shell 3 will not deform under pressure. At the same time, the setting of the first reinforcing ribs 10 and the second reinforcing ribs 12 can improve the stress distribution inside the upper shell 2 and the lower shell 3, avoid stress concentration, and thus improve the overall compressive strength of the structure. In addition, two inner pull rings 8 are set inside the spherical shell 1, which can reduce the occurrence of local stress concentration, thereby increasing the overall rigidity and bending resistance of the spherical shell 1, and thus preventing the shell from deforming or breaking. Connecting grooves 13 are respectively opened on one side of the first end seat 4, the second end seat 5, the third end seat 6, and the fourth end seat 7, so that the external equipment connection end can be inserted into the connecting groove 13 and fixedly installed on the first end seat 4, the second end seat 5, the third end seat 6, or the fourth end seat 7 by bolts, thereby improving the connection strength and stability between the external equipment and the spherical shell 1.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tie rod structure for producing pressure-resistant shells, characterized in that: It includes three spherical shells (1), which are fixedly connected to each other. An upper shell (2) is fixedly installed on the top of each spherical shell (1), and a lower shell (3) is fixedly installed on the bottom of each spherical shell (1). A first end seat (4), a second end seat (5), and a third end seat (6) are fixedly installed on the outside of each spherical shell (1). A fourth end seat (7) is fixedly installed on the upper shell (2) located above the third end seat (6). Two inner pull rings (8) are fixedly installed inside each spherical shell (1).

2. The tie rod structure for producing pressure-resistant shells according to claim 1, characterized in that: A second flange (11) is fixedly installed on the top of the upper shell (2). A second reinforcing rib (12) is fixedly connected between the second flange (11) and the upper shell (2). A tie rib (16) is fixedly connected between the two second flanges (11).

3. A tie rod structure for producing pressure-resistant shells according to claim 1, characterized in that: The bottom of the lower housing (3) is fixedly installed with a first flange (9), and a plurality of first reinforcing ribs (10) are fixedly connected between the lower housing (3) and the first flange (9).

4. A tie rod structure for producing pressure-resistant shells according to claim 1, characterized in that: The first end seat (4), the third end seat (6), and the fourth end seat (7) are respectively provided with a connecting groove (13) on one side. Multiple screw grooves (14) are provided on one side of the connecting groove (13). The two adjacent second end seats (5) of the two spherical shells (1) are fixedly connected to each other and form a U-shaped longitudinal section.

5. A tie rod structure for producing pressure-resistant shells according to claim 1, characterized in that: A fixed base (15) is fixedly installed on the spherical shell (1) located between the second end seat (5) and the third end seat (6).

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