A series of engine room covers, molds and co-mold design method

Abstract

The application discloses a series machine cabin cover, a mold and a mold design method, relates to the technical field of wind power generation equipment, and solves the problem that the existing machine cabin cover cannot meet new requirements due to the change of a machine type, the mold needs to be redesigned, the machine cabin cover body is divided into a plurality of standard small parts to realize mold sharing, the number of spliced components is increased, and the installation efficiency is reduced. The application has the beneficial effects of guaranteeing the universality of the mold body of different machine groups, reducing the development cycle and manufacturing cost of repeated mold investment, and has the specific scheme as follows: a series machine cabin cover comprises a machine cabin cover shell body, a machine cabin cover left part is located on a first side surface of the machine cabin cover shell body, a machine cabin cover right part is located on a second side surface of the machine cabin cover shell body and is arranged in a corresponding mode with the machine cabin cover left part, a machine cabin cover upper part is in butt joint with the top of the machine cabin cover left part and the machine cabin cover right part, the machine cabin cover upper part comprises an upper part body, the upper part body is provided with an upper part transition body with different heights, and the outer surfaces of the parts are of continuous smooth structures.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation equipment, in particular to a series cabin cover, a mold and a common mold design method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The wind turbine cabin cover is a protective device installed on the outermost layer of the wind turbine generator set, which protects the internal components of the cabin and prevents wind sand and rain from damaging. However, the wind turbine cabin cover is generally made of glass steel, and its production and preparation cannot be separated from the cabin cover mold. However, with the rapid development of the wind power industry, wind turbine generators are also rapidly updated and upgraded. The change of the machine type causes the original structure of the cabin cover to be unable to meet the new requirements, so the mold needs to be redesigned and manufactured for the development of new products. However, repeated mold investment not only adversely affects the development cycle of the product, but also causes waste of cost and generation of more solid waste, which is not conducive to energy saving and cost saving.

[0004] The existing modular design of the cabin cover reduces the number of unnecessary parting of the cabin cover, reduces the installation and maintenance risk, and realizes the series expansion of the cabin cover product by setting different modules. For example, application number-CN201921486741.X, a cabin cover for a wind turbine generator set, but the tail cabin module 150 includes a series of tail cabin components, and the upper cabin module 140 includes a series of upper cabin components, so the number of assembled components increases and the assembly efficiency is low. On the other hand, the main body of the cabin cover is divided into several standard small parts, such as application number-CN110578660A. Through modular design, the mold of various machine types can be shared, which reduces the initial mold investment. However, this scheme requires the overall shape of the cabin cover to be regular, otherwise the modular expansion cannot be carried out. At the same time, due to the large number of splicing components, the installation efficiency is also reduced and the subsequent splicing seam operation and maintenance risk is increased. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a series cabin cover, a mold and a common mold design method, which solves the technical problem that the change of the machine type causes the original structure of the cabin cover to be unable to meet the new requirements, and the mold needs to be redesigned and manufactured. The modular design divides the main body of the cabin cover into several standard small parts to realize the sharing of the mold, which causes the number of splicing components to increase and the installation efficiency to be reduced.

[0006] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0007] A series cabin cover, comprising a cabin cover shell, the cabin cover shell is divided into:

[0008] The left piece of the nacelle cover is located on the first side of the nacelle cover shell;

[0009] The right piece of the nacelle cover is located on the second side of the nacelle cover shell, and is arranged correspondingly with the left piece of the nacelle cover and is butted at the bottom with the left piece of the nacelle cover;

[0010] The upper piece of the nacelle cover is butted at the top with the left piece of the nacelle cover and the right piece of the nacelle cover, and comprises an upper piece main body, and an upper piece transition body with different heights is arranged on the upper piece main body;

[0011] The rear piece of the nacelle cover is arranged at one end of the left piece of the nacelle cover, the right piece of the nacelle cover and the upper piece of the nacelle cover, and the outer surface of the piece is a continuous smooth structure to adjust and match different units.

[0012] The series nacelle cover as described above, the left piece of the nacelle cover, the right piece of the nacelle cover and the upper piece of the nacelle cover are provided with a local front panel at the end away from the rear piece of the nacelle cover, and the front panel formed after the butt joint of the three is matched with a main shaft connecting piece, the local front panel adopts a flat plate connecting structure, and a plurality of groups of main shaft hole cutting lines are arranged on the local front panel.

[0013] The series nacelle cover as described above, the cross section of the left piece of the nacelle cover and the right piece of the nacelle cover is L-shaped, the local front panel of the left piece of the nacelle cover and the right piece of the nacelle cover is provided with a main shaft connecting hole in the form of a round hole, and a tower connecting hole, an air inlet hole and a lifting hole are sequentially arranged at the bottom from one end to the other end of the local front panel.

[0014] The series nacelle cover as described above, the tower connecting hole, the air inlet hole and the lifting hole are arranged as an inverted structure.

[0015] A series nacelle cover mold, comprising a mold main body, the mold main body is matched with the shape of the left piece of the nacelle cover and the right piece of the nacelle cover in any one of the series nacelle covers as described above, and a plurality of groups of main shaft hole cutting lines are arranged at the front end of the mold main body.

[0016] The series nacelle cover mold as described above further comprises a mold movable block, the mold movable block is divided into an air inlet hole movable block, a lifting hole movable block and a tower connecting movable block, and the mold movable block is arranged at the bottom of the mold main body and the relative position of the mold main body is adjustable.

[0017] A series nacelle cover common mold design method, the common mold design is carried out on the series nacelle cover in any one of claims 1-4, comprising the following steps:

[0018] The cabin cover is split into a cabin cover left piece, a cabin cover right piece, a cabin cover upper piece and a cabin cover rear piece, the cabin cover left piece and the cabin cover right piece are correspondingly arranged and butted at the bottom, the cabin cover upper piece is butted with the top of the cabin cover left piece and the cabin cover right piece, and the cabin cover rear piece is butted with the rear end of the cabin cover left piece, the cabin cover right piece and the cabin cover upper piece;

[0019] The cabin cover upper piece is split into an upper piece main body and an upper piece transition body according to different height differences, and the outer surface of the piece body is a continuous smooth structure so as to adjust and match different units.

[0020] The local front panel is arranged at the end of the cabin cover left piece, the cabin cover right piece and the cabin cover upper piece away from the cabin cover rear piece, and the front panel formed after the butt joint of the three is used for matching the main shaft connecting piece, the local front panel adopts a flat plate connecting structure, and the main shaft hole cutting line is arranged on the local front panel to form the main shaft connecting hole.

[0021] The cross section of the cabin cover left piece and the cabin cover right piece is arranged as an L type.

[0022] The tower tube connecting hole, the air inlet hole and the lifting hole in the cabin cover are arranged as an inward turning structure.

[0023] The beneficial effects of the above-mentioned application are as follows:

[0024] 1. The cabin cover shell is split and arranged, the series application level of the cabin cover is improved, the processing difficulty of the connecting gap of multiple piece bodies and the application limitation of multiple modules are reduced, the universal level is improved, the outer surface of the piece body is a continuous smooth structure so as to adjust and match different units. At the same time, the number of parts of the piece body is reduced, the piece body can be quickly assembled, and the work efficiency is improved.

[0025] 2. Multiple main shaft cutting lines are arranged on the local front panel, the tower tube connecting hole, the air inlet hole and the lifting hole are arranged as an inward turning structure, the differences of the piece body opening, connection and the like of different units of the cabin cover are realized by adjusting the mold movable block or the cutting position, the continuousness of the outer surface of the cabin cover is not damaged, and different units are adjusted and matched.

[0026] 3. Multiple main shaft hole cutting lines are arranged at the front end of the mold main body, the main shaft hole cutting line on the front panel of the cabin cover and the mold main body can be integrally marked, it is ensured that the main shaft hole cutting line marked on the mold main body is also formed on the piece body of the cabin cover when the piece body of the cabin cover is made, and the cutting line on the piece body of the cabin cover is only cut to form the main shaft connecting hole by using a cutting tool.

[0027] 4. The common mold design of the nacelle cover can ensure the commonality of the mold main body of different nacelle covers, and reduce the development cycle and manufacturing cost of repeated mold investment. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The embodiments of the application, and their

[0029] Figure 1 is a sectional view of a series of nacelle covers in an embodiment of the application.

[0030] Figure 2 is a left piece body view of a series of nacelle covers in an embodiment of the application.

[0031] Figure 3 is a structure view of a tower connecting flange in an embodiment of the application.

[0032] Figure 4 is a structure view of a nacelle cover mold in an embodiment of the application.

[0033] Figure 5 is a comparison view of a series of nacelle covers in an embodiment of the application.

[0034] In the drawings: the mutual distance or size is exaggerated for showing the position of each part, and the view is only schematic.

[0035] In the drawings: 1. left piece body of nacelle cover, 11. main shaft connecting hole, 12. tower connecting hole, 13. air inlet hole, 14. lifting hole, 2. right piece body of nacelle cover, 3. upper piece body of nacelle cover, 31. upper piece main body, 32. upper piece transition body, 4. main shaft connecting piece, 5. rear piece body of nacelle cover, 6. mold main body, 61. main shaft hole cutting line, 62. tower connecting movable block, 63. air inlet hole movable block, 64. lifting hole movable block, 7. comparison of a series of nacelle covers, 71. main shaft connection difference, 72. tower connecting opening difference, 73. internal connection difference, 74. other part difference. DETAILED DESCRIPTION

[0036] It should be noted that the following detailed description is merely exemplary and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0037] As introduced in the background, the transformation of the existing machine type results in that the original structure of the nacelle cover cannot meet the new requirements, and the mold needs to be redesigned and manufactured. The modular design divides the main body of the nacelle cover into several standard small pieces to realize mold sharing, which causes an increase in splicing components and a decrease in installation efficiency. In order to solve the above technical problems, the present application proposes a series of nacelle covers, molds and common mold design methods.

[0038] Embodiment one

[0039] In a typical embodiment of the present application, referring to Figures 1-5 A series of nacelle covers includes a nacelle cover shell, which is divided into four parts: a nacelle cover left piece 1, a nacelle cover right piece 2, a nacelle cover upper piece 3 and a nacelle cover rear piece 5. The nacelle cover left piece 1 is located on the first side of the nacelle cover shell, and the nacelle cover right piece 2 is located on the second side of the nacelle cover shell. The cross section of the nacelle cover left piece 1 and the nacelle cover right piece 2 is L-shaped, which is arranged correspondingly to the nacelle cover left piece 1 and the bottom is butt jointed with the bottom of the nacelle cover left piece 1. Thus, the nacelle cover left piece 1 and the nacelle cover right piece 2 form the left, right and bottom structures of the nacelle cover after butt jointing.

[0040] The nacelle cover upper piece 3 is used to form the top structure of the nacelle cover, which is butt jointed with the top of the nacelle cover left piece 1 and the nacelle cover right piece 2. Considering the height difference of the structure on the nacelle cover upper piece 3, the nacelle cover upper piece is limited by the height of the nacelle after assembly, which includes an upper piece main body 31, and an upper piece transition body 32 with different heights is arranged on the upper piece main body 31. When there is no related requirement, it can also be regarded as a whole.

[0041] The nacelle cover rear piece 5 is arranged at the rear end of the nacelle cover left piece, the nacelle cover right piece and the nacelle cover upper piece. The outer surface of all pieces is a continuous smooth structure, which realizes the piece made by the mold. According to the relative position and size of the connection of different machine groups and the tower, the mold cost is reduced and the mold versatility is improved, so as to adjust and match different machine groups.

[0042] The front end of the nacelle cover left piece 1, the nacelle cover right piece 2 and the nacelle cover upper piece 3 is provided with a local front panel, which forms a complete front panel after butt jointing. The front panel is used to connect with the main shaft connecting piece.

[0043] The local front panel adopts a flat plate connection structure, and the formed front panel has a continuous smooth structure as the outer surface of other pieces, which is convenient for matching different main shaft connecting pieces.

[0044] A plurality of main shaft hole cutting lines 61 are arranged on the local front panel. After the local front panels of the left piece 1, the right piece 2 and the upper piece 3 of the nacelle cover are spliced, the main shaft hole cutting lines 61 form a plurality of circles. The front panel of the nacelle cover is cut by using a cutting tool according to the relative positions and sizes of the main shafts of different units. Different main shaft hole cutting lines are cut to form different main shaft connecting holes 11 on the front panel. The main shaft connecting holes 11 are circular holes to facilitate connection with the main shafts of different units.

[0045] By arranging the main shaft hole cutting lines 61, after the pieces are made, only the corresponding main shaft connecting holes need to be cut according to the main shaft model of the unit. Different pieces do not need to be made by using corresponding molds due to different main shaft models. The mold versatility is enhanced. The arrangement of the main shaft hole cutting lines facilitates the adaptation of the front panel of the nacelle cover to the front panel of the nacelle cover of different units.

[0046] The local front panels of the left piece 1 and the right piece 2 of the nacelle cover and the upper piece of the nacelle cover are provided with circular main shaft connecting holes. The circular holes are formed after the three pieces are connected. The bottom of the left piece and the right piece of the nacelle cover is provided with a tower connecting hole, an air inlet hole and a lifting hole from one end of the local front panel to the other end. The specific positions are different according to different units.

[0047] The tower connecting hole 12, the air inlet hole 13 and the lifting hole 14 are arranged as an inverted structure, which does not affect and hinder the outer surface of the piece. Therefore, the outer surface of the whole piece is a continuous and smooth structure. Although the positions of the tower connecting hole 12, the air inlet hole 13 and the lifting hole 14 may be different for different units, the inverted structure can be used to make the outer surface structure of the piece by using the same mold in many cases. For different positions of the holes, corresponding movable blocks can be fixed on the mold to change the relative position of the movable blocks and the mold to make different nacelle covers without damaging the continuity of the outer surface of the nacelle cover, which facilitates the adjustment and matching of different units.

[0048] The above-mentioned design of the nacelle cover can ensure that the mold is shared and the number of piece structures is reduced, the pieces can be quickly assembled, and the work efficiency is improved.

[0049] Embodiment Two

[0050] A series of nacelle cover molds, including a mold body 6 and a mold movable block, are used to manufacture the nacelle cover pieces of the first embodiment. The mold body 6 is adapted to the shape of the left nacelle cover piece 1 and the right nacelle cover piece 2. The mold movable block mainly includes an air inlet hole movable block 63, a lifting hole movable block 64, and a tower connecting movable block 62. The mold movable block is arranged at the bottom of the mold body 6 and the relative position of the mold movable block to the mold body is adjustable. By changing the position of the mold movable block, the positions of the tower connecting hole 12, the air inlet hole 13, and the lifting hole 14 in the manufactured nacelle cover pieces are different, which adapts to different units.

[0051] The front end of the mold body can be provided with a plurality of groups of main shaft hole cutting lines 61. By providing different main shaft hole cutting lines 61 for different units, the position and size adjustment of the main shaft connecting opening can be realized. By providing different tower connecting movable blocks 62, air inlet hole movable blocks 63, and lifting hole movable blocks 64 for different units, the position and size adjustment of the internal connecting opening can be realized.

[0052] As shown in Figure 4 When marking the main shaft hole cutting line 61, the main shaft hole cutting line 61 on the front panel of the nacelle cover is integrally marked with the mold body 6. The position of the main shaft hole cutting line on the mold body is on the inner side of the front panel of the mold body 6. Correspondingly, on the nacelle cover piece, the main shaft hole cutting line 61 is formed on the outer side of the local front panel of the piece. This ensures that when the nacelle cover piece is manufactured, the main shaft hole cutting line 61 marked on the mold body 6 is also formed on the nacelle cover piece. Subsequently, only the cutting line on the nacelle cover piece needs to be cut to form the main shaft connecting hole using a cutting tool.

[0053] Integrally marking the main shaft hole cutting line on the front panel of the nacelle cover with the mold body can ensure the subsequent processing precision of the product. The tower connecting movable block 62, the air inlet hole movable block 63, and the lifting hole movable block 64 are separate modules that are connected and fixed with the main body mold, ensuring the unity of the mold body. When the opening size of different units changes, only the corresponding movable block needs to be replaced, and the mold body can be universal.

[0054] In addition, for the rear nacelle cover piece 5 and the upper nacelle cover piece 3, corresponding molds can also be used to realize mold universality. For the internal connection positioning of the nacelle cover, different positioning tools can be used to realize the positioning and adjustment of the internal connection. For the prior art, reference can be made to ZL201910044092.6-A nacelle cover manufacturing method, which will not be described here.

[0055] Embodiment three

[0056] A series of nacelle cover common mold design method is used to design a series of nacelle covers of the first embodiment and manufacture the nacelle cover using the mold of the second embodiment. The method includes the following steps:

[0057] The nacelle cover is divided into a left nacelle cover 1, a right nacelle cover 2, an upper nacelle cover 3, and a rear nacelle cover 5. The left nacelle cover 1 and the right nacelle cover 2 are positioned correspondingly and docked at the bottom. The upper nacelle cover 3 docks with the top of the left nacelle cover 1 and the right nacelle cover 2. The rear nacelle cover 5 docks with the rear ends of the left nacelle cover 1, the right nacelle cover 2, and the upper nacelle cover 3. The upper nacelle cover 3 is divided into an upper body 31 and an upper transition body 32 according to different height differences. The outer surface of the body is set as a continuous and smooth structure to adjust and match different units.

[0058] The left nacelle cover 1, the right nacelle cover 2, and the upper nacelle cover 3 are provided with a partial front panel at one end away from the rear nacelle cover 5. The front panel formed by the three parts is used to cooperate with the spindle connector 4. The partial front panel adopts a flat plate connection structure to achieve no large deformation at the front of the nacelle cover and a smooth overall surface, so as to adapt to the front panel retaining ring of different units. The partial front panel is provided with a spindle hole cutting line 61 to form a spindle connection hole 11, so as to facilitate the cutting of the front panel of the nacelle cover according to the relative position and size of the spindle of different units.

[0059] The cross-sections of the left and right sections of the nacelle cover are L-shaped, with their bottoms joined together in a symmetrical design, which facilitates the use of the same mold to manufacture the left and right sections of the nacelle cover.

[0060] The tower connection hole 12, air inlet hole 13, and lifting hole 14 inside the nacelle cover are designed with an inward-turning structure, so as not to affect the continuous smooth structure of the outer surface of the sheet. The bottom mold block of the nacelle cover is made according to the relative position and size of the tower connection of different units, which can realize the universality of the mold body. Only the corresponding movable block needs to be replaced and the position of the movable block needs to be adjusted according to different units.

[0061] like Figure 5 As shown in Figure 7, a comparison of the series of nacelle covers shows that after common mold design, the nacelle covers are manufactured using corresponding molds. This achieves the sharing of the main mold body for the series of nacelle covers, reducing costs. The local locations of the differences in the main shaft connection 71, tower connection opening 72, internal connection 73, and other differences 74 can be found in the attached figure. Figure 5 The common-mold design of the nacelle cover solved the problem of the inability to expand the series of molds caused by the difference in the internal connection dimensions of the nacelle cover. Figure 5 Only some differences are listed. Other differences can be expanded and serialized without disrupting the continuity of the outer surface of the nacelle.

[0062] The embodiment improves the application level of the nacelle cover series through appropriate profiling, reduces the processing difficulty of the connecting gap of the multiple pieces and the application limitation of the multiple modules, and improves the generalization level. Differences in opening and connection of the pieces of the nacelle covers of different units are realized through adjustment of the die movable block or cutting position, the main body of the die of the nacelle covers of different units is ensured to be universal, and the development cycle and manufacturing cost of repeated die investment are reduced.

[0063] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A common mode design method of a series of engine cowlings, characterized by, It comprises the following steps: The cabin cover is integrally split into a cabin cover left piece, a cabin cover right piece, a cabin cover upper piece and a cabin cover rear piece, the cabin cover left piece and the cabin cover right piece are correspondingly arranged and the bottoms are butted, the cabin cover upper piece is butted with the top of the cabin cover left piece and the cabin cover right piece, and the cabin cover rear piece is butted with the rear end of the cabin cover left piece, the cabin cover right piece and the cabin cover upper piece; The cabin cover upper piece is split into an upper piece main body and an upper piece transition body according to different height differences, and the outer surface of the piece body is arranged as a continuous smooth structure so as to adjust and match different units; The cabin cover left piece, the cabin cover right piece and the cabin cover upper piece are provided with a local front panel at the end away from the cabin cover rear piece, and the front panel formed after the butt joint of the three is matched with a main shaft connecting piece, the local front panel adopts a flat plate connecting structure, and a plurality of main shaft hole cutting lines are arranged on the local front panel; The cutting tool is used to cut the local front panel according to the relative position and size of the main shaft of different units, and different main shaft hole cutting lines are cut to form different main shaft connecting holes on the front panel; The differences in the piece body opening and connection of different units are realized by adjusting the mold movable block or the cutting position.

2. A common mode design method of a series of engine cowlings according to claim 1, characterized in that, The cross section of the cabin cover left piece and the cabin cover right piece is L-shaped, the local front panel of the cabin cover left piece and the cabin cover right piece is provided with a main shaft connecting hole in the form of a round hole, and a tower tube connecting hole, an air inlet hole and a lifting hole are sequentially arranged at the bottom from one end of the local front panel to the other end.

3. A common mode design method of a series of nacelle cowls according to claim 2, characterized in that, The tower tube connecting hole, the air inlet hole and the lifting hole are arranged as an inverted structure.

4. A common mode design method of a series of nacelle cowls according to any one of claims 1 to 3, characterized in that, The series cabin cover further comprises a mold main body, the mold main body is matched with the shape of the cabin cover left piece and the cabin cover right piece, and a plurality of main shaft hole cutting lines are arranged at the front end of the mold main body.

5. A common mode design method of a series of nacelle cowls according to claim 4, characterized in that, The series cabin cover further comprises a mold movable block, the mold movable block is divided into an air inlet hole movable block, a lifting hole movable block and a tower tube connecting movable block, and the mold movable block is arranged at the bottom of the mold main body and the relative position of the mold movable block to the mold main body is adjustable.

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