CN110303620B - Large wind power blade mold with cooling system and preparation method thereof - Google Patents

Abstract

The invention provides a large wind power blade mould with a cooling system and a preparation method thereof, the large wind power blade mould comprises a mould body, the mould body comprises a surface layer for forming a wind power blade and a heating layer arranged on the surface layer and used for heating the surface layer, a plurality of molded surface reinforcing pipes are arranged on the mould body, a heat-insulating layer covers the molded surface reinforcing pipes, a closed ventilation duct for fluid to flow in and out is defined by the surface of the mould body, the molded surface reinforcing pipes and the heat-insulating layer, the ventilation duct is provided with an air supply opening and an air outlet, and the air supply opening is connected with an air supply device. This large-scale wind-powered electricity generation blade mould with cooling system lets in cold wind through air supply device to the ventiduct through setting up the ventiduct on the mould, realizes the rapid cooling of material shaping solidification completion back mould, makes wind-powered electricity generation blade production efficiency improve greatly.

Description

Large wind power blade mold with cooling system and preparation method thereof

Technical Field

The invention belongs to the technical field of wind power generation blade molds, and particularly relates to a large wind power blade mold with a cooling system and a preparation method thereof.

Background

Wind power generation is a clean renewable energy source which converts the kinetic energy of wind into electric energy and is increasingly emphasized by countries in the world. Wind power blades used for wind power generation generally need to be formed by injection molding through a mold, and with the development of national wind power generation towards large-scale and offshore directions, the wind power blades are longer and longer, so that large-scale development of blade molds is caused, the mold occupying time in the blade production process is too long, the production efficiency is reduced after the blades are large-scale, the number of the molds needs to be increased, and the serious defects of a blade production workshop can be overcome.

The most time consuming in blade production is the mold cooling process after the temperature of the blade produced by the mold rises to a peak in the curing process, the traditional blade mold generally adopts a water heating or electric heating mode to heat the mold, after the temperature requirement of blade molding and curing is met, the water heating mode is to conduct the bypass of a cooling water tank on the mold, introduce hot water in a copper pipe arranged in the mold into the cooling water tank for heat exchange cooling, for example, the publication number is CN203792585U, which is named as a patent document of a device for raising and lowering the temperature of a fan blade mold, but along with the development of the blade towards the large-scale trend, the weight of the blade mold adopting the water heating mode is greatly increased, so that the synchronization problem of hydraulic overturning and the problems of mold dislocation, molded surface precision and the like are brought; the blade mould of electric heating mode possesses certain advantage, but electric heating mould does not basically have special cooling system, only reaches the shaping solidification temperature requirement after when the mould temperature, cuts off heating power, and to the mould natural cooling, the cooling process is slow, and blade production process accounts for the mould time long, and production efficiency is low.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a large wind power blade mold with a cooling system and a preparation method thereof.

In order to solve the problems, the invention provides a large wind power blade mould with a cooling system, which comprises a mould body, wherein the mould body comprises a surface layer for forming a wind power blade and a heating layer arranged on the surface layer and used for heating the surface layer, a plurality of molded surface reinforcing pipes are arranged on the mould body, a heat-insulating layer covers the molded surface reinforcing pipes, a closed air duct for fluid to flow in and out is formed by the surface of the mould body, the molded surface reinforcing pipes and the heat-insulating layer in a surrounding mode, an air supply opening and an air outlet are formed in the air duct, and the air supply opening is connected with an air supply device.

Among the technical scheme, preferred, the axial setting of mould body is followed to the ventiduct, and every ventiduct is cut apart into a plurality of sub-ventiducts by the baffle of the axis of perpendicular to mould body, is equipped with supply-air outlet and air outlet on every sub-ventiduct, and the supply-air outlet is connected with air supply device.

In the technical scheme, the air conditioner further comprises a temperature sensor, a controller and a control valve, wherein the temperature sensor is used for detecting the temperature in each sub-air channel, the controller is used for receiving a temperature signal detected by the temperature sensor and controlling the control valve according to the temperature signal, and the control valve can control the air supply volume in each sub-air channel.

In the technical scheme, preferably, the width of each sub-air channel is 0.7-0.9m, the length is 7-9m, and the height is 0.1-0.2 m.

In the technical scheme, preferably, the molded surface reinforcing pipe is connected with the die body through the supporting plate, and the molded surface reinforcing pipe and the supporting plate and the die body are sealed through pasting reinforcing materials.

In the technical scheme, preferably, the air supply device comprises a wind distribution box and a fan for supplying air to the wind distribution box, the wind distribution box is provided with a plurality of branch air openings, and the branch air openings are connected with the air supply openings of the sub ventilation channels.

In the technical scheme, preferably, the air outlet of the sub-ventilation duct is connected with the air outlet box.

In the technical scheme, the mould is preferable, the mould further comprises a mould support fixedly arranged above the mould body, and the molded surface reinforcing pipe is fixedly connected with the mould support.

The invention also provides a method for preparing the large-scale wind power blade mould with the cooling system, which comprises the following steps:

s1, manufacturing a male die of a large wind power blade die with a cooling system;

s2, manufacturing a surface layer and a heating layer on the male die in the step S1 to form a die body;

s3, arranging the molded surface reinforcing pipe on the die body according to the arrangement position of the air duct;

s4, integrally covering a heat insulation layer on the molded surface reinforcing pipe to form an air duct;

and S5, arranging an air inlet and an air outlet on the air duct, and connecting the air inlet with an air supply device.

In the technical solution, it is preferable that the method further includes, before step S3: s3a, installing the molded surface reinforcing pipe on the mold support according to the setting position of the air duct, and then installing the mold support on the mold body.

In the technical solution, preferably, step S3 specifically includes: a support plate is arranged between the molded surface reinforcing pipe and the die body, and the molded surface reinforcing pipe and the support plate and the die body and the support plate are respectively connected by pasting a reinforcing material by a hand pasting process.

In the technical solution, it is preferable to further perform, after step S3: s3b, setting up the baffle of the axis of a plurality of perpendicular to mould bodies on the mould body along the axial direction interval of mould body, making the ventiduct be divided into a plurality of sub-ventiducts.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the large wind power blade mold with the cooling system and the preparation method thereof, the mold body is provided with the air duct, the air duct is connected with the air supply device, cold air can be introduced into the air duct through the air supply device when the wind power blade is cooled after reaching a solidification temperature peak value under the heating of the heating layer, and the surface layer of the mold body is rapidly cooled to the initial temperature capable of producing the blade again through the heat exchange between the cold air and the mold body on the mold body, so that the mold occupying time is reduced, and the blade forming efficiency is remarkably improved;

2. according to the large wind power blade mold with the cooling system and the manufacturing method thereof, the air duct is divided into the plurality of short sub-air ducts in the length direction, each sub-air duct supplies air independently, the loss of cold energy in the same sub-air duct is reduced, and the cooling efficiency in a single sub-air duct is ensured;

3. according to the large wind power blade mold with the cooling system and the preparation method thereof, the air supply device is composed of the fan and the air distribution box, the air distribution box can distribute cold air provided by the fan to the sub-ventilation ducts, the air outlets of the sub-ventilation ducts are connected with the air outlet box, and the air outlet box can buffer air exhausted from the ventilation ducts;

4. according to the large wind power blade mold with the cooling system and the preparation method thereof, the temperature sensors are respectively arranged in the sub-ventilation channels, and the air outlet box is used for controlling and adjusting the air volume in each sub-ventilation channel according to the detection of the actual temperature in each sub-ventilation channel, so that the energy waste is reduced, and the uniform integral cooling rate of the mold body is ensured.

Drawings

FIG. 1 is a schematic cross-sectional structure diagram of a large wind turbine blade mold with a cooling system according to an embodiment of the invention;

FIG. 2 is a schematic longitudinal sectional structure view of a large wind turbine blade mold with a cooling system according to an embodiment of the invention;

fig. 3 is a control circuit diagram of air flow control in an air duct in a large wind turbine blade mold with a cooling system according to an embodiment of the invention.

Wherein: 1-a mould body; 11-a surface layer; 12-a heating layer; 13-an inner structural layer; 14-an outer structural layer; 2-profile reinforcing pipes; 3, insulating layer; 4-an air duct; 41-sub ventilation duct; 5-an air supply outlet; 6-air outlet; 7-a separator; 8-a support plate; 9-mold holder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

With the development of wind power generation gradually towards large-scale and offshore directions, wind power generation blades are longer and longer, a die for producing the wind power generation blades is developed towards large scale, the time of occupying the die in the blade production process is increased, the production efficiency is reduced, the most time consumed in the blade production is the cooling process of the die after the temperature rises to a peak in the blade curing process, the die adopting water heating mostly carries out heat exchange cooling by connecting cold water circulation to the die, but the large-scale wind power blades adopt the water heating mode to greatly increase the weight of the blade die, so that the synchronization problem of hydraulic turnover, the problems of die dislocation, profile precision and the like are brought, the electric heating mode has certain advantages, but no cooling system is available, only natural cooling is realized, and the cooling is slow.

In order to solve the problem, the invention provides a large wind power blade mold with a cooling system, as shown in fig. 1 and fig. 2, the large wind power blade mold comprises a mold body 1, the mold body 1 comprises a surface layer 11 for forming a wind power blade and a heating layer 12 arranged on the surface layer 11 and used for heating the surface layer 11, a plurality of molded surface reinforcing pipes 2 are arranged on the mold body 1, a heat-insulating layer 3 covers the molded surface reinforcing pipes 2, a closed air duct 4 for fluid to flow in and out is formed by the surface of the mold body 1, the molded surface reinforcing pipes 2 and the heat-insulating layer 3 in a surrounding mode, an air supply opening 5 and an air outlet 6 are arranged on the air duct 4, and the air supply opening 5 is connected with an.

After the combined material moulds plastics in large-scale wind-powered electricity generation blade mould, zone of heating 12 heaies up to solidification temperature makes the combined material solidification, make zone of heating 12 stop heating after the temperature reaches the peak, then open air supply device and let in the cold air through supply-air outlet 5 in to ventiduct 4, the cold air carries out the heat exchange to the surface of mould body 1, make zone of heating 12 rapid cooling, make the mould surface from the initial temperature that the blade solidification's temperature falls to the mould profile can produce the blade once more fast, the promotion that is showing of blade shaping efficiency has been realized.

Wherein, mould body 1 still includes inner structure layer 13 and outer structure layer 14, and inner structure layer 13 is located between superficial layer 11 and the zone of heating 12, mainly provides support, structure reinforcing effect to superficial layer and zone of heating, and available glass steel material, outer structure layer 14 are located on the zone of heating 12, mainly provide structural support and protection for the zone of heating 12, and available glass steel material, profile reinforcing pipe 2 sets up on outer structure layer 14. Wherein the heating layer 12 is heated using an electric heating mode.

Wherein, the arrangement mode of profile reinforcing pipe 2 can be along the axial setting of mould body 1, also can be perpendicular to the axial setting of mould body 1, perhaps arrange with the direction that forms certain angle with the axle of mould body 1, preferentially, ventiduct 4 sets up along the axial of mould body 1, and every ventiduct 4 is cut apart into a plurality of sub-ventiducts 41 by the baffle 7 of the axis of perpendicular to mould body, is equipped with supply-air outlet 5 and air outlet 6 on every sub-ventiduct 41, and supply-air outlet 5 is connected with air supply device. Because large-scale wind-powered electricity generation blade mould length is long, if the whole length direction of ventiduct through the mould body, the certain heat exchange has taken place with the mould body and has a higher temperature in the time of arriving the ventiduct afterbody of letting in, consequently can't effectually cool down the mould body of ventiduct afterbody, and will follow the ventiduct that mould length direction set up and cut apart into a plurality of short sub-ventiducts on length direction, and every short sub-ventiduct lets in the cold air respectively, can improve the cooling efficiency and the rate of cooling of mould greatly.

The design of the cooling air volume of the mold can be carried out according to the design of heat exchange between the curing temperature and the cooling requirement of the mold production blade, and then the length and the width of each sub-air channel are designed according to the cooling air volume, preferably, the width S of each sub-air channel 41 is 0.7-0.9m, the length L is 7-9m, and the height H is 0.1-0.2 m.

Wherein, the profile reinforcing pipe 2 can be the cross section for circular shape pipe, also can be the cross section for square side's pipe, preferred pipe, the material of profile reinforcing pipe can select steel pipe, iron pipe etc. also can be material such as wooden pole, preferred steel pipe, further preferred, profile reinforcing pipe 2 uses the external diameter to be 40-70 mm's round steel pipe. The molded surface reinforcing pipe 2 is used as a side wall of the ventilation duct and also used as a rigid support for controlling the molded surface precision of the mold, so that the molded surface precision of the mold is ensured.

When the molded surface reinforcing pipe 2 is a steel pipe, the molded surface reinforcing pipe and the die body 1 can be connected through welding or other methods; preferably, the profile reinforcing pipe 2 is connected with the die body 1 through a support plate 8, the profile reinforcing pipe 2 is connected with the support plate 8, the support plate 8 is connected with the die body 1 through a paste reinforcing material, and the support plate 8 can be made of a wood plate or a glass fiber reinforced plastic plate. It is further preferred that the profile reinforcing tube 2 is 80-130mm from the mould body and the support plate is 5-15mm thick.

The heat insulating layer 3 may be a layered material made of various heat insulating materials, and as a preferred embodiment, the heat insulating layer in this embodiment uses a double-layer aluminum film bubble heat insulating film. The heat insulation layer 3 can be an integral layered material covering all the molded surface reinforcing pipes above the whole mould body, or can be divided into a plurality of heat insulation layers according to the positions of the sub-ventilation ducts, and the heat insulation layers are respectively covered on the molded surface reinforcing pipes in different areas, and in order to ensure that the interior of the ventilation ducts is better in sealing property, the mould body is preferably covered with one heat insulation layer at intervals of 7-10 meters along the length direction of the mould body. The double-layer aluminum film bubble heat insulation film is directly fixed on the molded surface reinforcing pipe through the self-tapping screws, and the cross section of the heat insulation film in each area is pasted and sealed through the sealing rubber strips, so that the sealing performance is improved, and wind leakage is prevented.

Wherein, all be equipped with supply-air outlet 5 and air outlet 6 on every sub-ventiduct 41, in this embodiment, supply-air outlet 5 and air outlet 6 set up respectively at the both ends of sub-ventiduct on every sub-ventiduct 41. The arrangement mode of the air supply outlet and the air outlet can be that a vent is directly arranged on the heat preservation layer 3, a steel plate is used for rolling the pipe orifice of the vent, the air outlet pipe of the air supply device is connected with the pipe orifice of the vent, or other modes can be adopted, preferably, the steel plate with the width of 240 and 400mm is used for rolling the pipe orifice, further preferably, the diameter of the air supply outlet 5 is 200mm, and the diameter of the air outlet 6 is 250 mm.

The air supply device can be a plurality of independent fans, each fan respectively supplies cold air to one sub-ventilation channel, the same fan can be used for a plurality of sub-ventilation channels, and the air supplied by the fans is divided into multiple paths and respectively introduced into the sub-ventilation channels; as a preferred embodiment, the air supply device of this embodiment includes a blower fan and a branch box, the blower fan is connected to the branch box, the branch box has a plurality of branch air openings, each branch air opening of the branch box is connected to an air supply opening of a different sub-air duct, and the air supplied by the blower fan is divided into a plurality of strands of cold air by the branch box and is supplied to the different sub-air ducts by the different branch air openings. The air-dividing box belongs to the prior art and is commonly used for indoor fresh air supply and the like, and in the embodiment, the air-dividing box can be a special air-dividing box for fresh air produced by the chain wind environment science and technology (Shanghai) company Limited. Further, the branch air openings of the air dividing box and each sub-air passage can be connected through a connecting hose.

Wherein, the air outlet of every sub-ventiduct all is connected to out bellows, and the air-out case belongs to prior art, is equipped with air current decelerator and silencing device in the air-out case usually, can play the cushioning effect to the air of following each sub-ventiduct exhaust, and the air can be with the influence greatly reduced that causes the environment through speed reduction and amortization when being arranged to the atmosphere by the air-out case.

Preferably, the large wind turbine blade mold with the cooling system further comprises a temperature sensor, a controller and a control valve, as shown in fig. 3, the temperature sensor and the control valve are respectively electrically connected with the controller, the temperature sensor is used for monitoring the temperature in each sub-ventilation duct 41 and transmitting a temperature signal to the controller, the controller is used for comparing the temperature signal with a set value, and outputting a signal to control the opening, closing or opening and closing of the control valve according to the comparison result, and the control valve can control the air supply, non-air supply or air volume in each sub-ventilation duct. After a temperature set value is set in the controller, the temperature sensor transmits a detected temperature signal to the controller, the controller compares the temperature signal with the set value, if the actual temperature is higher than the set value, the controller outputs a signal to open the control valve (normally closed control valve) or not to act (normally open control valve) or to open the control valve, so that the sub-ventilation duct supplies air or regulates the air quantity, and if the actual temperature is lower than or equal to the set value, the controller outputs a signal to stop the control valve (normally closed control valve) or close the control valve (normally open control valve), so that the sub-ventilation duct does not supply air. Therefore, the air supply condition in each sub-ventilation channel can be independently controlled, cold air is not introduced when the temperature reduction in a certain sub-ventilation channel meets the requirement, the energy is saved, and the cold air is continuously introduced when the temperature reduction in a certain sub-ventilation channel does not meet the requirement, and the discharge amount is controlled; simultaneously, can also make the cooling rate in the different regions of whole mould more homogeneous, prevent that a certain regional part of mould from cooling down too fast, cause the influence to the stability of mould structure itself, make the reduction of mould profile precision.

Further, a temperature sensor may be disposed in each sub-air duct 41, specifically, in the middle or the tail of the sub-air duct, and the temperature sensor may be a thermocouple or other type of temperature sensor; the controller and the control valve can be a control system arranged in the air distribution box and control valves in branch air inlets of the air distribution box, such as a special air distribution box for fresh air produced by chain wind environmental technology (Shanghai) limited, wherein the connection part of each branch pipeline interface is respectively provided with an air valve which is electrically connected with a control device of a host machine, and the host machine can automatically control the air volume of each branch pipeline, so that the air volume in each sub-air channel can be controlled; the controller and the control valve may be provided separately, for example, flow control valves may be provided on a pipe connecting the air dividing box to each air supply port or on the air supply ports, the flow control valves are electrically connected to the controller, and the controller controls each flow control valve to adjust the amount of air in each sub-air passage.

The large wind power blade mould with the cooling system further comprises a mould support 9 fixedly arranged above the mould body 1, and the molded surface reinforcing pipe 2 is fixedly connected with the mould support 9, so that the stability of the installation position of the molded surface reinforcing pipe 2 on the mould body 1 is further enhanced; the fan is installed on the die support 9 through a fixed support, and the air distribution box is installed on the die support 9.

The invention also provides a method for preparing the large wind power blade mould with the cooling system, and in the embodiment, the method for preparing the large wind power blade mould with the cooling system comprises the following specific steps:

s1, manufacturing a male die of a large wind power blade die with a cooling system, which specifically comprises the following steps: the method comprises the following steps of performing split design of a male die of a die according to the characteristics of the die of the large wind power blade, performing male die molding of the die according to the requirements of profile precision, temperature uniformity, vacuum airtightness and the like of the blade die, and processing the profile by adopting a metal steel frame and an upper ring oxygen wood layer through a five-axis CNC (computer numerical control) machining center to obtain a three-dimensional profile in design;

s2, manufacturing a surface layer, an inner structure layer, a heating layer and an outer structure layer on the male die in the step S1 to form a die body, which specifically comprises the following steps: carrying out surface treatment on the three-dimensional molded surface of the male die, and sequentially manufacturing a surface layer, an inner structural layer, a heating layer and an outer structural layer of the wind power blade die on the male die after the surface treatment;

s3a set up the position according to the ventiduct and install profile reinforced pipe on the mould support, then with mould support mounting on the mould body, specifically do: designing heat exchange according to the curing temperature and cooling requirements of a mold for producing blades, designing the cooling air volume of the mold, carrying out partition design of an air duct aiming at a blade mold body, determining the installation position of a molded surface reinforcing pipe according to the partition design of the air duct, welding the molded surface reinforcing pipe on a built metal mold support, arranging the molded surface reinforcing pipe along the axial direction of the mold, setting the width of the air duct formed between the adjacent molded surface reinforcing pipes to be 700 plus material and 900mm, setting the molded surface reinforcing pipe to be 80-130mm away from the surface of an outer structure layer of the mold body, setting the molded surface reinforcing pipe to be a steel round pipe with the diameter of 40-70mm, and using the molded surface reinforcing pipe as the side wall of the air duct and also as a rigid support for controlling the molded surface precision of the mold;

s3, set up the profile reinforced pipe on the mould body according to the position that sets up of ventiduct, set up the backup pad between profile reinforced pipe and mould body to use the hand to paste the technology and paste the system and strengthen the material and be connected profile reinforced pipe and backup pad, mould body and backup pad respectively, specifically do: installing a mould bracket provided with a profile reinforcing pipe on a mould body according to the design position of an air duct, pasting a wood board or a glass steel plate with the thickness of 5-15mm between the profile reinforcing pipe and the surface of an outer structural layer of the mould body by a hand-pasting glass steel forming process to be 1-2mm thick, and pasting areas with the thickness of 200mm respectively on two sides of a profile adjusting position by taking an adjusting piece as the center to be 3-5mm thick, so that a gap between the profile reinforcing pipe and the mould body is firmly sealed to prevent air leakage;

s3b sets up the baffle of the axis of a plurality of perpendicular to mould bodies along the axial direction interval of mould body on the mould body, specifically is: partition plates perpendicular to the axis of the die body are used for partitioning every 7-9 meters of the axial length of the die body, so that the air duct on the die body is divided into sub-air ducts every 7-9 meters;

s4, wholly cover the heat preservation on the profile reinforced pipe, enclose into the ventiduct, specifically do: in the cooling area range of every 7-10 meters in the length direction of the die body, the die body is integrally covered with a heat insulation layer, the heat insulation layer uses a double-layer aluminum film bubble heat insulation film, the heat insulation film is directly fixed on the molded surface reinforcing pipe by using self-tapping nails and the like, and the cross section of each area of the heat insulation film is tightly attached by using a sealing rubber strip, so that wind leakage is avoided;

s5, an air inlet and an air outlet are arranged on the air duct, and the air inlet is connected with an air supply device, and the method specifically comprises the following steps: the air supply port and the air outlet are arranged on the heat insulation layers at the two ends of each sub-ventilation duct, the air supply port and the air outlet are both made of steel plates in a random shape, the width of each steel plate is 240-400mm, the diameter of each air supply port is 200mm, the diameter of each air outlet is 250mm, the random steel plates need to be reinforced, and vibration during air blowing is avoided; the air supply device comprises a fan and an air distribution box, the fan is fixed with the mold bracket through a fixed support, the fan is connected with the air distribution box, a branch air port of the air distribution box is connected with an air supply port of each sub-ventilation duct through a hose, and an air outlet is connected with the air outlet box;

and S6, arranging a temperature sensor in each sub-air channel, and electrically connecting the temperature sensor with a control system of the air distribution box.

According to the large wind power blade mould with the cooling system, the mould body is provided with the air duct, the air duct is connected with the air supply device, cold air can be introduced into the air duct through the air supply device when the wind power blade is cooled after reaching a solidification temperature peak value under the heating of the heating layer, and the surface layer of the mould body is rapidly cooled to the initial temperature capable of producing the blade again through the heat exchange between the cold air and the mould body on the mould body, so that the mould occupying time is reduced, and the blade forming efficiency is remarkably improved; the air duct is divided into a plurality of short sub-air ducts in the length direction, each sub-air duct supplies air independently, the loss of cold energy in the same sub-air duct is reduced, and the cooling efficiency in a single sub-air duct is ensured; the air supply device consists of a fan and an air distribution box, the air distribution box can distribute cold air provided by the fan to each sub-air duct, an air outlet of each sub-air duct is connected with the air outlet box, and the air outlet box can buffer air discharged by the air duct; set up temperature sensor in each sub-ventiduct respectively, according to the detection to actual temperature in each sub-ventiduct, control and adjust the amount of wind in every sub-ventiduct by the air-out case, it is extravagant to reduce the energy to guarantee the whole cooling rate homogeneous of mould body.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (5)

1. The utility model provides a large-scale wind-powered electricity generation blade mould with cooling system which characterized in that: the wind power blade forming mold comprises a mold body, wherein the mold body comprises a surface layer used for forming a wind power blade and a heating layer arranged on the surface layer and used for heating the surface layer, a plurality of molded surface reinforcing pipes are arranged on the mold body, a heat insulation layer covers the molded surface reinforcing pipes, a closed air duct capable of allowing fluid to flow in and out is defined by the surface of the mold body, the molded surface reinforcing pipes and the heat insulation layer, the air duct is provided with an air supply opening and an air outlet, and the air supply opening is connected with an air supply device;

the air channels are arranged along the axial direction of the die body, each air channel is divided into a plurality of sub air channels by a partition plate perpendicular to the axial line of the die body, and each sub air channel is provided with the air supply outlet and the air outlet; each sub-air channel has the width of 0.7-0.9m, the length of 7-9m and the height of 0.1-0.2 m;

the air conditioner also comprises a temperature sensor, a controller and a control valve, wherein the temperature sensor is used for detecting the temperature in each sub-air channel, the controller is used for receiving a temperature signal detected by the temperature sensor and controlling the control valve according to the temperature signal, and the control valve can control the air supply volume in each sub-air channel;

the air supply device comprises an air distribution box and a fan for supplying air to the air distribution box, the air distribution box is provided with a plurality of branch air openings, and the branch air openings are connected with the air supply openings of the sub ventilation channels.

2. The large wind turbine blade mold with a cooling system according to claim 1, wherein: the molded surface reinforcing pipe is connected with the die body through a supporting plate, and the molded surface reinforcing pipe is sealed with the supporting plate and the die body through pasting reinforcing materials.

3. A method for preparing a large wind blade mould with a cooling system according to claim 1 or 2, comprising:

s1, manufacturing a male die of the large-scale wind power blade die with the cooling system;

s2, manufacturing the surface layer and the heating layer on the male die in the step S1 to form the die body;

s3, arranging the molded surface reinforcing pipe on the die body according to the arrangement position of the air duct;

s3b, arranging a plurality of partition plates perpendicular to the axis of the die body on the die body at intervals along the axial direction of the die body, so that the air channel is divided into a plurality of sub air channels;

s4, integrally covering the heat-insulating layer on the molded surface reinforcing pipe to form the air duct;

and S5, arranging the air supply outlet and the air outlet on the ventilation duct, and connecting the air supply outlet with the air supply device.

4. The method for preparing a large wind blade mold with a cooling system according to claim 3, further comprising before step S3: s3a, according to the setting position of the air duct, the molded surface reinforcing pipe is installed on the mold support, and then the mold support is installed on the mold body.

5. The method for preparing the large-scale wind power blade mold with the cooling system according to claim 4, wherein the step S3 is specifically as follows: and a support plate is arranged between the molded surface reinforcing pipe and the die body, and the molded surface reinforcing pipe and the support plate and the die body and the support plate are respectively connected by pasting a reinforcing material by a hand pasting process.

Images