CN201425004Y - A kind of cabin cover assembly - Google Patents

Abstract

The utility model discloses a nacelle cover assembly, which comprises a cover body, the cover body includes a rectifying cover and a nacelle cover, the rectifying cover and the nacelle cover are connected through a rainproof ring, and the rectifying cover is composed of a rectifying cap The hub cover is connected, and the nacelle cover is composed of an upper cover and a lower cover body. The utility model can be convenient for production and demoulding, and can also reduce seams and improve the shape and surface precision of products.

Description

A kind of cabin cover assembly

Technical field:

The utility model relates to equipment for wind power generators, in particular to a nacelle cover for wind power generators.

Background technique:

Existing wind turbine nacelles are divided into small and medium-sized types, which are formed by hand lay-up of reinforced fibers. This type of nacelle cover is only used for wind turbines below 1 MW. Due to the small size and low installation height of small and medium wind turbines, it is difficult to The requirements for the mechanical strength of the nacelle cover are not high. However, for wind turbines above 1.5 MW, due to the large installation space (about 10m in length, about 3.6m in width, and about 3.8m in height) and the installation height is too high (over 50m above the sky), this requires the overall structure of the nacelle cover to be compact , light weight, strong mechanical strength, wind load resistance, anti-aging performance, and long service life. Therefore, the performance and structure of the existing small and medium-sized wind turbine canopies cannot meet the use requirements of high-capacity wind turbines. In addition, the reinforcing fiber used to manufacture this kind of wind turbine canopy is two-way cloth in warp and weft, and the strength of the product is only two-way. The assembly joints of the upper and lower covers are butt-joint, and the joints must be post-processed during installation. Many installation procedures lead to long installation periods.

Chinese patent 200820033032.1 discloses a large-scale wind turbine cabin cover, as shown in Figure 1, the large-scale wind turbine cabin cover provided by this scheme includes an upper cover body, a lower cover body, an upper cover body made of multi-directional glass fiber cloth and The lower cover body is connected by an inner flange, and hollow reinforcing ribs are placed on the inner side of the upper cover body and the lower cover body; meanwhile, the thickness of the upper and lower cover bodies is 7-8mm, and all surfaces of the two cover bodies are curved. Such a nacelle cover improves the mechanical strength of the product by changing the structure and connection method of the wind turbine canopy, enhances the anti-aging and anti-wind load capabilities, and makes the nacelle cover larger, not only light in weight, high in strength, and large in bearing capacity , and it is economical, safe, and easy to install, especially suitable for wind turbines above 1.5 MW.

The above two kinds of nacelle covers for wind turbines have their own advantages and disadvantages in the applicable fields, but when such nacelle covers are industrially produced using molds, the production process and demoulding are relatively difficult, and the shape and surface accuracy of the products are not high at the same time; Such nacelle cover also has the problems of inconvenient transportation and inconvenient multi-block manufacturing.

Utility model content:

In order to solve the structural defects of the existing nacelle cover and the problems caused by the structural defects to industrial production, a new nacelle cover is provided which is convenient for production, demoulding, and can reduce stitching and provide surface accuracy.

In order to achieve the above object, the utility model adopts the following technical solutions:

A nacelle cover assembly, which includes a cover body, the cover body includes a fairing and a nacelle cover, and the cover body also includes a rainproof ring, and the fairing and the nacelle cover are connected through the rainproof ring.

The fairing is composed of a fairing cap connected to a hubcap.

The nacelle cover is composed of an upper cover and a lower cover body.

The fairing cap of the fairing is a parabolic segment rotating shell, and its lower end is connected with the annular flange on the upper end of the hub shell through an annular flange in a threaded manner.

The hub cover of the fairing is formed by bonding a plurality of sub-covers that are convenient for production and demoulding. Its main body is the shell of the parabolic rotating body used to cover the hub of the wind turbine. The ring flange at the upper end of the rain ring is connected by screw connection; the upper end of the main body of the hub cover is connected with the fairing cap through the ring flange; the main body of the hub cover is symmetrically provided with a cone for covering the root of the blade after the blade is connected to the hub of the wind turbine. A trapezoidal blade hole; at the same time, the main body of the hub shell is also provided with a plurality of embedded parts for connecting the fairing to the hub of the wind power generating set.

The bonding method between the sub-covers is to use glass fiber cloth and resin to bond in an overlapping manner at each seam.

The upper cover body and the lower cover body of the nacelle cover are connected by a flange connection, and the upper cover body is an upper shell made of a plurality of upper sub-cover bodies that are convenient for production and demoulding. There is an air outlet on the top of the cover for dissipating the heat generated when the wind turbine is working; at the same time, there is a lifting port on both sides of the air outlet for easy installation; there are also a plurality of handrails on the top of the upper cover for installation , Cover installation lugs, navigation lights and embedded parts of the meteorological station; the front end of the upper cover is provided with a sealing plate for blocking rainwater; The rear air outlet; located on the inner wall of the upper cover, there is a polyurethane foam sandwich rib for strengthening the rigidity and strength of the mechanical structure of the upper cover.

The upper casing is a scanning casing with a gradually changing section.

The air outlet is a stretched shell with a draft angle on the side and a parabolic cross section;

The sealing plate is a semicircular polyurethane foam sandwich glass steel plate.

The hoisting opening is a stretched housing with a keyway-shaped cross section.

The hoisting port is provided with a matching hoisting port cover for covering the hoisting port.

The rear air outlet is a boss with a draft angle on the side, and a plurality of through holes are arranged on one surface of the boss.

The upper sub-covers are bonded in lap joints by using glass fiber cloth and resin at each seam.

The lower cover body is a lower shell formed by bonding a plurality of lower sub-covers that are convenient for production and demoulding, and a tower hole is provided at the bottom front end of the lower cover body for connecting the tower tube to the wind power generating set; the lower cover body The front end of the body is provided with a sealing plate used to block rainwater; between the sealing plate and the tower hole is provided a front vent for sucking cold air into the cover body and cooling the wind turbine; located at the rear end of the lower cover body There is a platform for maintenance personnel to step on and place tools, and there is an air vent on the platform; there are a plurality of embedded connectors on both sides of the lower cover body for connecting the cover body with the wind power generating set.

The lower casing is a scanning casing with a gradually changing section.

The sealing plate is a semicircular polyurethane foam sandwich glass steel plate.

The front air vent is a round straight pipe with a flange.

The lower sub-covers are bonded in lap joints by using glass fiber cloth and resin at each seam.

The rainproof ring is formed by bonding a plurality of sub-rings that are convenient for production and demoulding. Its main body is a straight cylinder with an annular flange at the top and bottom. Ring flange connection.

The bonding method of the sub-rings is to use glass fiber cloth and resin to bond in an overlapping manner at each seam.

The utility model obtained according to the above-mentioned technical scheme can facilitate production and demoulding, and can also reduce seams and improve product shape precision. Simultaneously the utility model also has the following advantages:

(1) Minimize the number of blocks, which is convenient and easy to install. The installation is carried out in the workshop by hoisting and locking the bolts. If there are fewer blocks, the number of plates and bolts to be installed will be reduced to the greatest extent, the installation efficiency will be improved, and the installation workload will be reduced.

(2) Fewer blocks reduce seams on the surface of the nacelle cover and improve the appearance of the product. The fewer the blocks, the fewer the seams in the appearance, giving people an overall coherent feeling.

(3) There are fewer seams on the surface of the product, which reduces the splicing dislocation and unevenness at the seams. The product has a better smooth and smooth surface, and also provides the appearance effect of the product to the greatest extent.

(4) Minimize the number of blocks to minimize the connection stress. Internal stress is most likely to be generated at the connection, and the concentrated internal stress after connection makes the product prone to strength damage. The fewer the blocks, the less the internal stress of the installation, and the safer and more reliable the product.

(5) Fewer blocks reduce the risk of bolt connection damage at the splice. Destruction often occurs at the connecting bolts. Reducing fragmentation also reduces the number of connecting bolts, reduces the risk of bolt breakage, and makes the product safer and more reliable.

(6) Fewer blocks also make the overall relative position more accurate, greatly reducing the misplacement of embedded parts and other nacelle cover accessories, and the internal mechanical parts of the product can also be better installed correspondingly, minimizing installation errors.

(7) Reduce the number of blocks to the greatest extent and reduce the joints, which is the best way to reduce the possibility of rain leakage due to lax joints. The rain leakage of the product directly affects the life of the internal machinery. Therefore, the utility model reduces the rain leakage and provides higher reliability.

(8) The utility model is also convenient for maintenance and disassembly, the disassembly workload is small, the opening of the cover is less, and the time for taking out the internal machinery is short.

(9) The rainproof ring adopted in the utility model is used to shield the wheel shaft of the wind power generating set from rainwater through the cylinder body and the lower end flange, which can effectively prevent rainwater from entering the engine room and prolong the use of the product. the term.

Description of drawings:

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of an existing nacelle cover.

Fig. 2 is a structural schematic diagram of the utility model.

Figure 3 is a bottom view of the fairing.

Figure 4 is a top view of the upper cover.

Fig. 5 is a front view of the upper cover.

Figure 6 is a top view of the lower cover.

Figure 7 is a front view of the lower cover.

Figure 8 is a top view of the rainproof ring.

Figure 9 is a side view of the rainproof ring.

Fig. 10 is a schematic diagram of the split structure of the fairing.

Fig. 11 is a schematic diagram of the split structure of the upper cover.

Fig. 12 is a schematic diagram of the split structure of the lower cover.

Fig. 13 is a schematic diagram of the split structure of the rainproof ring.

Detailed ways:

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Fig. 2, the nacelle cover assembly provided by the utility model is mainly composed of a fairing 1, a nacelle cover 2 and a rainproof ring 3, wherein the fairing 1 and the nacelle cover 2 are connected by the rainproof ring 3. The fairing 1 designed by the utility model is made up of a fairing cap 101 and a hubcap 102, and the nacelle cover 2 is formed by connecting upper and lower cover bodies 201, 202 to each other.

As shown in the figure, the fairing cap 101 on the fairing 1 is a parabolic segment rotating shell, and an annular flange at its lower end is connected with the annular flange at the upper end of the hub cover 102 in a screwed manner.

The hubcap 102 of the fairing is formed by bonding a plurality of sub-covers that are convenient for production and demoulding, and its bonding method is to use glass fiber cloth and resin to bond in an overlapping manner at each seam. The main body of the hub cover 102 is a shell whose shape is a parabolic rotating body. At its lower end, an annular flange is connected with the annular flange at the upper end of the rainproof ring 3 in a screw-connected manner for covering the wind turbine hub. The main body of the hub cover 102 is provided with three blade holes 103, which are symmetrically arranged on the main body of the hub cover 102. Cover the base of the blade after connecting. The upper end of the hubcap 102 main body is connected with the rectifying cap 101 by an annular flange, and there are 12 embedded parts 105 in the hubcap 102 main body, which are distributed symmetrically in two groups in the circumferential direction (as shown in Figure 3 ), for The fairing is connected with the hub of the wind turbine, and its positioning accuracy is guaranteed by the tooling.

Referring to Figures 2 and 4, the nacelle cover 2 in the assembly is composed of an upper cover body 201 and a lower cover body 202 connected by flanges. The upper cover body 201 is formed by bonding a plurality of sub-covers that are convenient for production and demoulding, and each joint between the sub-covers is bonded with glass fiber cloth and resin in an overlapping manner. The bonded upper cover body 201 is a scanning housing with each section being a gradual cross-section. An air outlet 203 is arranged at the middle of the top of the upper cover body to dissipate the heat generated during the operation of the wind power generator. The tuyere 203 is a stretched shell with a draft angle on the side and a parabolic cross section. A pair of hoisting openings 204 are arranged symmetrically on both sides of the air outlet 203. The hoisting opening 204 is a stretched shell with a keyway shape in cross section, which is used to lift the hook of the crane Stretch into the hoisting port and hook on the hoisting point of the wind power generating set; at the same time, each hoisting port 204 is provided with a hoisting port cover 205 matching the hoisting port, which is used to cover the hoisting port after the tower of the wind power generating set. The top of the upper cover body 201 is also provided with some pre-embedded iron plates 206 for installing handrails, cover body installation lugs, navigation lights and weather stations. The inner wall of the upper cover is also provided with reinforcing ribs sandwiched by polyurethane foam (not shown in the figure). The distance between the two has been repeatedly verified by mechanical calculations to strengthen the rigidity and strength of the mechanical structure of the upper cover. .

As shown in Figure 2, the rear air outlet 207 at the rear end of the upper cover body 201 is a boss with a draft angle on the side, and a circular through hole 208 and a square through hole 209 are opened on one surface of the boss. , used to dissipate the heat generated when the wind turbine is working.

As shown in FIG. 5 , the front end of the upper cover body 201 is provided with a sealing plate 210 , which is a semicircular polyurethane foam sandwich glass steel plate for blocking rainwater.

The lower cover body in the nacelle cover is shown in Figure 6, which is also made of several lower sub-cover bodies that are convenient for production and demoulding, and the joints between them are bonded by glass fiber cloth and resin in an overlapping manner . The lower cover body is a scanning housing with each cross-section being a gradual cross-section. A tower hole 211 is provided in the middle of the front end of the bottom of the lower cover 202 for the tower to pass through the hole when the cover and the wind turbine are connected to the tower in the wind field. The lower cover body front end is provided with a sealing plate 212 for blocking rainwater simultaneously, and it is a semicircle polyurethane foam sandwich glass steel plate (as shown in Figure 7). There is a front air vent 213 between the sealing plate 212 and the tower hole 211, which is a round straight pipe with a flange, through which cold air can be sucked into the cover body through the air vent to cool the wind power when the wind power generator is working. dynamo. A platform 214 is provided at the rear end of the lower cover body, and an air vent 215 is provided on the platform. The platform is used for maintenance personnel to step on and place tools when the wind power generating set is overhauled. There are three pairs of embedded connectors 216 located symmetrically on both sides of the lower cover for connecting the cover with the wind power generator.

As shown in Fig. 8 and Fig. 9, the rainproof ring 3 is a circular straight cylinder respectively having an annular flange 301, 302 up and down, and the upper end annular flange is connected with the lower end annular flange of the wheel hub cover 102 on the fairing. The cylinder body and the lower end flange of the rainproof ring are used to shield the wheel shaft of the wind power generating set from rainwater. The rainproof ring is also made of a plurality of sub-ring bodies that are convenient for production and demoulding by using glass fiber cloth and resin to bond in an overlapping manner at the seams.

The nacelle cover assembly obtained by the above technical solution is convenient for production demoulding and easy to install and dismantle. The technical solution adopted by the utility model is that the fairing 1, the nacelle cover 2 and the rainproof ring 3 are bonded by corresponding splits. . The specific overall block is as follows:

The fairing 1 is composed of two large parts as a whole, as shown in Figure 10, it includes a fairing 101 and a hubcap 102, wherein the fairing 101 is a separate block and can be directly made by corresponding molds. The hub cover 102 can be formed by bonding three equally divided sub-covers 104, and the bonding method adopted is as described above, and will not be repeated here. The three equally divided cover bodies 104 are divided into blocks along the vertical axis of the three blade holes 103 on the hub cover 102 . At the same time, the 12 pre-embedded connectors arranged in the fairing body are distributed in two groups in a circumferential direction (as shown in FIG. 3 ), and the fairing body and the hub of the wind power generator can be connected through these pre-embedded connectors. As long as the sub-covers 104 are directly molded by corresponding molds, since the three sub-covers are equally divided, only one mold can be used to complete the production, and bonding can be carried out after molding. This block method is not only convenient for demoulding, but also conducive to improving production efficiency, product shape accuracy, reducing installation seams, installation errors, and installation time.

The upper cover body 201 in the nacelle cover 2 is composed of three split bodies in the utility model, as shown in Figure 11: as can be seen from the figure, the front part of the upper cover body 201 is composed of two symmetrical sub-cover bodies 217 , the rear part is divided into a background split body 218. The split body 217 is formed by dividing into blocks along the axis of the upper cover body, and the backstage split body is formed by dividing into blocks along the cross-section line of the backstage 214 . Since the split body 217 is a symmetrical split body, only two molds for the split body 217 and the background split body 218 can be used to manufacture the upper cover body 201 as shown. become. This block method is not only convenient for demoulding, but also conducive to improving production efficiency, product shape accuracy, reducing installation seams, installation errors, and installation time.

Referring to Fig. 12, the lower cover is formed by connecting two symmetrical sub-covers 219, and the sub-covers 219 are divided into blocks along the axis of the lower cover. After the sub-cover body 219 is made by the corresponding mold, the two sub-cover bodies are bonded into the lower cover body by the above-mentioned bonding method. At the same time, six symmetrically distributed embedded connectors (as shown in FIG. 7 ) are arranged in the lower cover body, and the lower cover body can be connected with the wind power generating set through these embedded connectors. This block method is not only convenient for demoulding, but also conducive to improving production efficiency, product shape accuracy, reducing installation seams, installation errors, and installation time.

As shown in FIG. 13 , the rainproof ring is formed by bonding two symmetrical sub-ring bodies 303 , which can be divided into blocks along the axis of the rainproof ring. After the sub-ring body 303 is made by a corresponding mold, it is assembled and then bonded by the above-mentioned bonding method to form a rainproof ring. This block method is not only convenient for demoulding, but also conducive to improving production efficiency.

According to the above-mentioned technical scheme, the fairing 1, the nacelle cover 2 and the rainproof ring 3 with complex structures can be bonded by corresponding simple splits, which not only facilitates the demoulding of production, but also facilitates the improvement of production efficiency and product quality. Surface accuracy reduces installation seams, installation errors and installation time.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (21)

1, a kind of engine room cover assembly, it comprises a cover body, this cover body comprises cowling and engine room cover, it is characterized in that, also comprises a rainproof ring, is connected by rainproof ring between described cowling and the engine room cover.

2, a kind of engine room cover assembly according to claim 1 is characterized in that, described cowling connects hubcap by the rectification cap and forms.

3, a kind of engine room cover assembly according to claim 1 is characterized in that described engine room cover is connected to form by upper and lower cover body.

4, a kind of engine room cover assembly according to claim 2 is characterized in that, the rectification cap of described cowling is the parabolic segment rotary shell, and its lower end is connected in the mode of being spirally connected by the annular flange of annular flange with the hubcap upper end.

5, a kind of engine room cover assembly according to claim 2, it is characterized in that, the hubcap of described cowling by be convenient to produce, cover body adhesions in a plurality of minutes of the demoulding form, its main body is the housing that is used to hide the parabola solid of rotation of hub of wind power generator, and the lower end of main body is connected in the mode of being spirally connected by the annular flange of annular flange with rainproof ring upper end; The upper end of hubcap main body is connected with the rectification cap by annular flange; Being provided with of symmetry is used for blade is connected back covering root of blade with hub of wind power generator taper type vane hole on this hubcap main body; Also be provided with in this hubcap main body simultaneously and be used for a plurality of embedded parts that cowling is connected with wind generator unit wheel hub.

6, a kind of engine room cover assembly according to claim 5 is characterized in that, the adhesion mode between described minute cover body is to use glass fiber cloth and resin bonding with overlapping mode at each edge joint position.

7, a kind of engine room cover assembly according to claim 3, it is characterized in that, connect with the flange ways of connecting between described engine room cover upper outlet body and the lower cover, described upper outlet body serve as reasons be convenient to produce, a plurality of upper shells that divide the cover body adhesion to form of going up of the demoulding, this upper outlet body top is provided with an exhaust outlet that produces heat when being used to shed wind-driven generator work; A lifting mouth of being convenient to install is respectively arranged in the exhaust outlet both sides simultaneously; The upper outlet body top also is provided with a plurality of embedded parts that are used to install handrail, cover body installation usefulness hanger, navigation mark light and meteorological station; The upper outlet body front end is provided with a shrouding that is used for rain cover; The rear end of upper outlet body is provided with the back exhaust outlet that produces heat when being used to shed wind-driven generator work; Be positioned at the upper outlet body inwall and be provided with the sandwich stiffening rib of polyamine fat vacuole foam that is used to strengthen rigidity and intensity on the upper outlet body mechanical structure.

8, a kind of engine room cover assembly according to claim 7 is characterized in that, described upper shell is the scanning housing that a cross section is the gradual change cross section.

9, a kind of engine room cover assembly according to claim 7 is characterized in that, described exhaust outlet is that a side has drafting angle, the cross section is parabolical stretching housing;

10, a kind of engine room cover assembly according to claim 7 is characterized in that, described shrouding is a sandwich glass epoxy of semicircle polyamine fat vacuole foam.

11, a kind of engine room cover assembly according to claim 7 is characterized in that, described lifting mouth is that a cross section is the stretching housing of key-way shape.

According to claim 7 or 11 described a kind of engine room cover assemblies, it is characterized in that 12, described lifting mouth is provided with the lifting flap that matches with it, is used for hiding the lifting mouth.

13, a kind of engine room cover assembly according to claim 7 is characterized in that, described back exhaust outlet is the boss that a side has drafting angle, and a face of this boss is provided with plurality of through holes.

14, a kind of engine room cover assembly according to claim 7 is characterized in that, described going up divided between the cover body by use glass fiber cloth and resin bonding with overlapping mode at each edge joint position.

15, a kind of engine room cover assembly according to claim 7, it is characterized in that, described lower cover is that the lower cover bottom front is provided with one and is used for the tower tube hole that the tower tube is connected with wind power generating set by the lower shell body of being convenient to produce, the cover body adhesion formed a plurality of following minute of the demoulding; The front end of lower cover is provided with a shrouding that is used for rain cover; Between shrouding and tower tube hole, be provided with one and be used for cool air is sucked in the cover body, the preceding ventilated port of cooling air power generator; Be positioned at the lower cover rear end and be provided with one and allow the maintainer trample and put tool platform, a ventilated port is arranged on this platform; Respectively there are a plurality of built-in connections that cover body is connected with wind power generating set of being used for the lower cover both sides.

16, a kind of engine room cover assembly according to claim 15 is characterized in that, described lower shell body is the scanning housing that a cross section is the gradual change cross section.

17, a kind of engine room cover assembly according to claim 15 is characterized in that, described shrouding is a sandwich glass epoxy of semicircle polyamine fat vacuole foam.

18, a kind of engine room cover assembly according to claim 15 is characterized in that, described preceding ventilated port is a flanged round straight tube.

19, a kind of engine room cover assembly according to claim 15 is characterized in that, passes through at each edge joint position use glass fiber cloth and resin bonding with overlapping mode between the described following minute cover body.

20, a kind of engine room cover assembly according to claim 1, it is characterized in that, described rainproof ring by be convenient to produce, ring body adhesions in a plurality of minutes of the demoulding form, its main body is a straight tube of the circle that an annular flange respectively arranged up and down, and the annular flange of hubcap lower end is connected on upper end annular flange and the cowling.

21, a kind of engine room cover assembly according to claim 20 is characterized in that, ring body adhesion mode was bonding with overlapping mode at each edge joint position use glass fiber cloth and resin in described minute.

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