Rigid mold structure for wind turbine blades for quick replacement of the mold profile.

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of wind turbine blade moulds, and in particular to a rigid wind turbine blade mould structure capable of rapidly replacing a mould profile.BACKGROUND

[0002] Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. It has huge energy storage capacity. The global wind energy is about 2.74 × 10 9< MW, including available wind energy of 2 × 10 7< MW, which is 10 times the total volume of available hydroenergy on the earth. Wind has been used for a long time, and in the past usages mainly included water pumping, flour grinding and the like through windmills. However, at present, people are interested in how to generate electricity through wind, and the principle of wind power generation is that wind power is used for driving blades of windmills to rotate, and then the rotation speed is increased through speed increasers to promote generators to generate electricity. According to the current wind power generation technology, the power generation can be started at a breeze speed of about three meters per second. Wind power generation is setting off a wave around the world because it has no fuel problems and does not produce radiation or air pollution.

[0003] With the rapid development of clean energy in China and the rapid development of the wind power industry, the megawatt level of the wind turbine blades has been larger and larger, the length of the wind turbine blades has increased from twenty or thirty meters to over one hundred meters, and therefore when a blade mould is manufactured, the manufacturing cost is higher, and the operation process is complex.

[0004] The current structure of a wind turbine blade mould shell is typically made of a polymer composite material, such as fiber reinforced plastic, and may include a core material, such as artificial foam, wood, and metal honeycomb material, inside the mould shell. Typical forming processes include hand lay-up forming, hand lay-up bag moulding, vacuum introduction forming, autoclave forming, resin transfer moulding, prepreg laying forming and the like. Typical mould shell structures are typically of relatively uniform thickness, the primary function of which is to provide the required physical dimensions, process conditions (e.g., vacuum, temperature, and surface roughness), etc. for blade manufacture.

[0005] Because the mould shell is thin and low in rigidity, the maintenance of the geometric shape in the production process of the blade cannot be guaranteed by the mould shell alone, and therefore the mould shell is often supported by a complex steel frame. In a typical process of blade production, a steel frame is the source of rigidity of the whole mould system in the processes of blade forming in a mould opening state, mould assembly and the like. The existing mould shell has the characteristic of low rigidity, and the rigidity of a steel frame needs to be higher, so that the design is complex, the weight is relatively heavy, and the manufacturing period is long. In the prior art, in order to connect a mould shell and a steel frame, a metal pipe along the length direction of the mould is usually arranged on the mould steel frame, then a fiberglass cloth soaked with resin is wrapped around the metal pipe and hand laid-up on the back surface of the mould shell, and then the metal pipe is waited for curing. The metal pipes can be arranged in parallel in the width direction of the mould, shape-fitting metal plates are used for being locally connected with the mould shell, and the connection has more degrees of freedom, so that the deformation of the mould shell in the width direction cannot be completely restrained, and the conditions of large mould profile change and unstable quality along the direction in the blade production process are caused.

[0006] In order to improve the rigidity of the mould shell, different types of reinforcing ribs are generally designed and mounted on the back of the mould shell, or the thickness of the shell is increased. Different types of core materials are adopted, such as PET, PVC, balsa wood, and aluminum honeycombs, to improve the rigidity of the mould shell; the materials have high cost and heavy weight, cause environment pollution during moulding, and cause certain damage to the health of workers if they contact the composite material for a long time.

[0007] CN 214 646 055 U discloses a detachable overturning beam for overturning a wind turbine power generation blade mould, which comprises an upper beam, a lower beam and an overturning arm for connecting the upper beam and the lower beam together, the upper beam comprises a welding compartment type upper beam, a transverse transition fixing plate and a front-back adjusting plate, and the transverse transition fixing plate and the front-back adjusting plate are respectively arranged at two ends of the welding compartment type upper beam. The longitudinal transition connecting fixing plate and the longitudinal transition adjusting plate are installed on the girder, the lower beam comprises a welding compartment type lower beam, a bearing bottom plate, a horizontal adjusting device and an overturning arm connecting plate set, the bearing bottom plate and the horizontal adjusting device are installed at the two ends of the welding compartment type lower beam, the overturning arm connecting plate set is fixed to the welding compartment type lower beam, and the overturning arm connecting plate set is connected with one end of an overturning arm.

[0008] WO 2012 / 055395 A2 discloses that in a mould arrangement having at least a first mould part and having at least one movably held second mould part, in particular for producing rotor blades for wind power plants, and having at least one pivoting device for the second mould part, said second mould part can be moved by means of the pivoting device out of a position next to the first mould part and into at least a congruent position over the first mould part. The pivoting device has at least one support element which is held in a movable manner about a first rotary bearing and is equipped with a second rotary bearing for the second mould part to tilt about the second rotary bearing, wherein at least the first rotary bearing of the pivoting device is arranged in a manner spaced apart from the standing surface of the first, fixed mould part.SUMMARY

[0009] Objective: The present invention is intended to solve the shortcomings in the prior art by providing a rigid wind turbine blade mould structure capable of rapidly replacing a mould profile which improves the flexural rigidity, thus greatly improving the anti-deformation capacity of a shell to simplify the supporting structure, accelerating the manufacturing and mounting process, reducing the dimensions of the structure, reducing the overall weight of a mechanism, facilitating the transportation, reducing the energy consumption and pollution, improving the mounting efficiency and saving the cost.

[0010] Technical solution: In order to achieve the above objective, the invention is set out in the appended set of claims.

[0011] Beneficial effects: Compared with the prior art, the rigid wind turbine blade mould structure capable of rapidly replacing a mould profile provided in the present invention has the following advantages: (1) by eliminating the use of complex steel frame structure, the overall weight of the mould reduced and the cost is saved; (2) the flexural rigidity of the enhanced glass fiber reinforced plastic mould shell structure is greater than that of a common mould shell by several orders of magnitude, so that the anti-deformation capacity of the shell is greatly improved, providing necessary conditions for fewer and simple support structure; (3) the flexural rigidity of the mould shell obtained by the mould is higher than that of the mould shell in the prior art, so that the anti-deformation capacity of the shell is greatly improved to simplify the supporting structure, the manufacturing and mounting process is accelerated, the dimensions of the structure are reduced, the overall weight of a mechanism is reduced, the transportation is facilitated, the energy consumption and pollution are reduced, the mounting efficiency is improved and the cost is saved; (4) when the rigid wind turbine blade with different mould profiles needs to be replaced, only the sectional support frames need to be removed, the dimensions of the sectional support frames matched with the shape of the blade and the telescopic height of the telescopic rods on the connecting device section steel structure relative to the cross sectional steel frame are adjusted, and waste and pollution are reduced; (5) the rapid replacement of the mould shell is realized through the integral structure, so that the time cost of the overall mould is reduced, and the sustainable development policy is supported; and (6) the rigid wind turbine blade mould structure capable of rapidly replacing a mould profile is simple to manufacture, easy to operate, convenient to construct, high in use flexibility, good in adaptability and easy to popularize and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a schematic structural diagram of a mould shell mounted on a supporting mechanism. FIG. 2 is a schematic diagram of an operation state of a turning mechanism during turning over; FIG. 3 is a schematic structural diagram of the present invention. FIG. 4 is a front view of the present invention; FIG. 5 is a detailed view of a guide rail; FIG. 6 is a schematic structural diagram of an inner structure of a sliding block; FIG. 7 is a schematic structural diagram of a locking device; and FIG. 8 is a schematic diagram of the present invention in an operation state. DETAILED DESCRIPTION

[0013] The present invention will be further illustrated with reference to drawings below.

[0014] As shown in the drawings, the present invention provides a rigid wind turbine blade mould structure capable of rapidly replacing a mould profile, which comprises: a turning device 1, a cross sectional steel frame 20, bottom support adjusting devices 2, sectional support frames 3, supporting rods 4, guide rails 5, connecting device section steel structure 6, sliding blocks 7, bolt holes 8, an electromagnet 9, a metal block 10, a locking device 11, circular tubes 12, an electromagnet 9, a metal block 10, and a locking device 11.

[0015] The manufacture of the lower mould by the device requires the following steps: manufacturing a mould shell 30 on a master mould, analyzing the distribution interval of the bottom support adjusting devices 2, hand laying-up the back surface of the mould shell 30 and uniformly distributing circular tubes 11, coating a back rigid reinforcing layer material, and demoulding the master mould;

[0016] The manufacture of the upper mould by the device requires the following steps: manufacturing a mould shell 30 on a master mould, analyzing the distribution interval of the bottom support adjusting devices 2, hand laying-up the back surface of the mould shell 30 and uniformly distributing circular tubes 11, coating a back rigid reinforcing layer material, demoulding the master mould, turning over the cross sectional steel frame for mould assembly, connecting flange edges, and performing laser detection and mould profile adjustment according to a 3D model of the mould; wherein the master mould is a master form, and the upper mould and the lower mould are both manufactured on the master mould, as shown in FIG. 1, if the lower mould is required to be manufactured, after the manufacturing of the lower mould is finished, the master mould positioned on the inner surface of the lower mould is demoulded, and if the upper mould is required to be manufactured, after the manufacturing of the upper mould is finished, the master mould on the inner surface of the upper mould is demoulded, and then the upper mould is turned over to be above the lower mould through the turning mechanism, as shown in FIG. 2.

[0017] When the shell structure needs to be replaced, only the mould shell 30 needs to be moved away from its corresponding sectional support frames 3, the bottom support adjusting devices 2 are reusable in the mould structure of different blade types, and after the mould shell is replaced, the height of the bottom support adjusting devices 2 can be used according to the change adjustment of the curvature of the surface of the mould shell 30, so that the waste and pollution are greatly reduced, the cost is saved, and a better solution for the sustainable development of economy and environment is provided.Comparative experimental data

[0018] By taking an 80-meter mould available in the market as an example for comparison, various parameters of the mould shell are separately compared as follows: Taking a 80-meter mould as an example for comparison Nos.ItemNormal shell mouldRigid shell mould1Weight of mould shell (kg)8500kg6000-10000kg2Weight of mould frame (kg)18000kgWithout mould frame3Thermal performance (temperature uniformity)+ / -5C+ / -3C4Mould shell profile replacementIrreplaceableQuickly replaceable5Time for mould shell mould profile replacementThe mould is re-manufactured for 30-40 daysThe rigid mould shell is manufactured for 20-30 days6Flexural rigidity of mould shell500Mpa - 650Mpa800-900Mpa7Tensile strength of mould shell450Mpa - 550Mpa560Mpa - 680Mpa8Cost of the mould3 million-4 million2 million-3 million9Maximum stress of steel frame189.62MpaWithout steel frame10Mould deformation6mm-14mm4mm-10mm

[0019] It can be seen from the comparison that the structure of the replaceable shell obtained by the method improves the flexural rigidity, thus greatly improving the anti-deformation capacity of a shell to simplify the supporting structure, accelerating the manufacturing and mounting process, reducing the dimensions of the structure, reducing the overall weight of a mechanism, facilitating the transportation, reducing the energy consumption and pollution, improving the mounting efficiency and saving the cost.Embodiment 1

[0020] Step I, manufacturing a mould shell 30 on the outer surface of a master mould to serve as a lower mould, curing a mould profile layer, a heating layer and a reinforcing layer on the back surface of the mould shell 30 in sequence, then pre-embedding square tubes at flange edges on two sides of the mould shell 30, and curing for 7 hours at the temperature of 40 °C;

[0021] Step II, after the curing process of the pre-embedded square tubes of the mould is finished, analyzing the stress condition of each component on the mould shell 30 through FEA mechanics finite element analysis software;

[0022] Step III, after uniformly distributing circular tubes 11 on the back surface of the mould shell 30, reserving a connecting window for the circular tubes 11 and the supporting structure during hand laying-up 2 layers of epoxy resin and LTM800 / 225 fiberglass cloth, and curing for 12 hours at room temperature after the hand lay-up process is finished;

[0023] Step IV, after the hand lay-up process is finished, coating the back surface of the mould shell 30 with a back rigid reinforcing layer material; the manufacture of the back rigid reinforcing layer comprises the following steps: (1) adding 10 parts by mass of perlite, bentonite, ceramic particles, basalt or silicon oxide and 5 parts by mass of fiber wires, short steel wires or quartz sand into planetary stirring equipment, mixing for 5 min and then uniformly stirring, adding 30 parts by mass of epoxy resin into a stirrer, and stirring for 10 min to obtain a back rigid reinforcing layer material when the viscosity is 10000 cp; (2) uniformly coating the back surface of the mould shell with the rigid reinforcing layer material except the reserved connecting window at a thickness of 2 cm by using extrusion equipment or a manual extrusion manner; and (3) after the coating of the back surface of the mould shell except the reserved connecting window is finished, curing for 6-10 hours at room temperature to obtain the back rigid reinforcing layer.

[0024] Step V, demoulding the master mould after the back rigid reinforcing layer is formed; wherein the adjustment of the bottom support adjusting devices 2 is performed for matching the supporting with different mould profiles according to the curvature fluctuation of the mould profiles, wherein the curvature fluctuation of the mould profiles is modeled in Pro / E software, and the curvature change of the mould profiles is obtained by combining ANASYS analysis software, so that the design adjustment of the mould profile support is performed; the bottom support adjusting devices 2 are telescopic piston rods powered by an air pump as supporting elements, when the mould shell needs to be supported, the positions of the bottom support adjusting devices are determined according to the calculated result in the step II, then the curvature fluctuation of a mould profile is determined according to the curved surface condition of the outer surface of an upper mould and is modeled in Pro / E software, the curvature change of the mould profile is obtained by combining ANASYS analysis software, finally the extension length of the piston rods is determined according to the curvature change, after the sliding blocks 7 slide to limited positions on the guide rails 5, the sliding blocks 7 slide to limited positions on the guide rails 5 by inserting bolts into the bolt holes 8 in advance, so that the limited positions of the sliding blocks 7 sliding on the guide rails 5 are limited, the extension height of the telescopic rods 61 on two pieces of the connecting device section steel structure 6 is adjusted, and then the mould profile of the mould shell 30 is matched through the two pieces of connecting device section steel structure 6 and a plurality of sectional support frames 3, thereby achieving the supporting of the mould shell 30; finally, the master mould is moved away from the supporting structure through a travelling crane. Embodiment 2

[0025] Step I, manufacturing a mould shell 30 on the outer surface of a master mould to serve as a lower mould, curing a mould profile layer, a heating layer and a reinforcing layer on the back surface of the mould shell 30 in sequence, then pre-embedding square tubes at flange edges on two sides of the mould shell 30, and curing for 9 hours at the temperature of 50 °C; Step II, after the curing process of the pre-embedded square tubes of the mould is finished, analyzing the stress condition of each component on the mould shell 30 through FEA mechanics finite element analysis software; Step III, after uniformly distributing circular tubes 11 on the back surface of the mould shell 30, reserving a connecting window for the circular tubes 11 and the supporting structure during hand laying-up 2 layers of epoxy resin and LTM800 / 225 fiberglass cloth, and curing for 12 hours at room temperature after the hand lay-up process is finished; Step IV, after the hand lay-up process is finished, coating the back surface of the mould shell 30 with a back rigid reinforcing layer material; the manufacture of the back rigid reinforcing layer comprises the following steps: (1) adding 30 parts by mass of perlite, bentonite, ceramic particles, basalt or silicon oxide and 10 parts by mass of fiber wires, short steel wires or quartz sand into planetary stirring equipment, mixing for 10 min and then uniformly stirring, adding 70 parts by mass of epoxy resin into a stirrer, and stirring for 20 min to obtain a back rigid reinforcing layer material when the viscosity is 20000 cp; (2) uniformly coating the back surface of the mould shell with the rigid reinforcing layer material except the reserved connecting window at a thickness of 20 cm by using extrusion equipment or a manual extrusion manner; and (3) after the coating of the back surface of the mould shell except the reserved connecting window is finished, curing for 10 hours at room temperature to obtain the back rigid reinforcing layer. Step V, demoulding the master mould after the back rigid reinforcing layer is formed; wherein the adjustment of the bottom support adjusting devices 2 is performed for matching the supporting with different mould profiles according to the curvature fluctuation of the mould profiles, wherein the curvature fluctuation of the mould profiles is modeled in Pro / E software, and the curvature change of the mould profiles is obtained by combining ANASYS analysis software, so that the design adjustment of the mould profile support is performed; the bottom support adjusting devices 2 are telescopic piston rods powered by an air pump as supporting elements, when the mould shell needs to be supported, the positions of the bottom support adjusting devices are determined according to the calculated result in the step II, then the curvature fluctuation of a mould profile is determined according to the curved surface condition of the outer surface of an upper mould and is modeled in Pro / E software, the curvature change of the mould profile is obtained by combining ANASYS analysis software, finally the extension length of the piston rods is determined according to the curvature change, after the sliding blocks 7 slide to limited positions on the guide rails 5, the sliding blocks 7 slide to limited positions on the guide rails 5 by inserting bolts into the bolt holes 8 in advance, so that the limited positions of the sliding blocks 7 sliding on the guide rails 5 are limited, the extension height of the telescopic rods 61 on two pieces of the connecting device section steel structure 6 is adjusted, and then the mould profile of the mould shell 30 is matched through the two pieces of connecting device section steel structure 6 and a plurality of sectional support frames 3, thereby achieving the supporting of the mould shell 30; finally, the master mould is moved away from the supporting structure through a travelling crane. Embodiment 3

[0026] Step I, manufacturing a mould shell 30 on the outer surface of a master mould to serve as an upper mould, curing a mould profile layer, a heating layer and a reinforcing layer on the back surface of the mould shell 30 in sequence, then pre-embedding square tubes at flange edges on two sides of the mould shell 30, and curing for 8 hours at the temperature of 45 °C; Step II, after the curing process of the pre-embedded square tubes of the mould is finished, analyzing the stress condition of each component on the mould shell 30 through FEA mechanics finite element analysis software; Step III, after uniformly distributing circular tubes 11 on the back surface of the mould shell 30, reserving a connecting window for the circular tubes 11 and the supporting structure during hand laying-up 2 layers of epoxy resin and LTM800 / 225 fiberglass cloth, and curing for 12 hours at room temperature after the hand lay-up process is finished; Step IV, after the hand lay-up process is finished, coating the back surface of the mould shell 30 with a back rigid reinforcing layer material; the manufacture of the back rigid reinforcing layer comprises the following steps: (1) adding 20 parts by mass of perlite, bentonite, ceramic particles, basalt or silicon oxide and 8 parts by mass of fiber wires, short steel wires or quartz sand into planetary stirring equipment, mixing for 7 min and then uniformly stirring, adding 50 parts by mass of epoxy resin into a stirrer, and stirring for 16 min to obtain a back rigid reinforcing layer material when the viscosity is 15000 cp; (2) uniformly coating the back surface of the mould shell with the rigid reinforcing layer material except the reserved connecting window at a thickness of 10 cm by using extrusion equipment or a manual extrusion manner; and (3) after the coating of the back surface of the mould shell except the reserved connecting window is finished, curing for 8 hours at room temperature to obtain the back rigid reinforcing layer. Step V, demoulding the master mould after the back rigid reinforcing layer is formed. wherein the adjustment of the bottom support adjusting devices 2 is performed for matching the supporting with different mould profiles according to the curvature fluctuation of the mould profiles, wherein the curvature fluctuation of the mould profiles is modeled in Pro / E software, and the curvature change of the mould profiles is obtained by combining ANASYS analysis software, so that the design adjustment of the mould profile support is performed; the bottom support adjusting devices 2 are telescopic piston rods powered by an air pump as supporting elements, when the mould shell needs to be supported, the positions of the bottom support adjusting devices are determined according to the calculated result in the step II, then the curvature fluctuation of a mould profile is determined according to the curved surface condition of the outer surface of an upper mould and is modeled in Pro / E software, the curvature change of the mould profile is obtained by combining ANASYS analysis software, finally the extension length of the piston rods is determined according to the curvature change, after the sliding blocks 7 slide to limited positions on the guide rails 5, the sliding blocks 7 slide to limited positions on the guide rails 5 by inserting bolts into the bolt holes 8 in advance, so that the limited positions of the sliding blocks 7 sliding on the guide rails 5 are limited, the extension height of the telescopic rods 61 on two pieces of the connecting device section steel structure 6 is adjusted, and then the mould profile of the mould shell 30 is matched through the two pieces of connecting device section steel structure 6 and a plurality of sectional support frames 3, thereby achieving the supporting of the mould shell 30; Step VI, after the demoulding of the master mould is finished, adding a rigid reinforcing layer; wherein the connecting device section steel structure 6 and the circular tubes on the back surface of the mould shell are welded and fixed, a hand lay-up layer is added at the periphery of the circular tubes for connection, an inorganic non-metallic ceramic filler group is added into an epoxy resin or gelling agent serving as a basic carrier to serve as a reinforced ceramic shell, and the surface of the back rigid reinforcing layer is coated with the reinforced ceramic shell in a hand lay-up manner; Step VII, performing mould assembly. wherein the turning device 1 of the turning mechanism is welded on the cross sectional steel frame for turning over, the turning device is controlled by a hydraulic system to turn over the upper mould, and finally mould assembly is performed; Step VIII, mounting a clamping mechanism to connect the mould shell; wherein the flange edges of the upper mould and the lower mould are prefabricated with metal blocks 10 and electromagnets 9, the surfaces of the flange edges are provided with guide concave-convex devices for aligning the relative positions of the upper mould and the lower mould, the electromagnets 9 are powered on and powered off to lock and close the locking device 11 when the blade of the mould is cured, and the connection and disconnection of the joint of the flange edges of the upper mould and the lower mould are controlled by the locking device 11 in a hydraulic transmission or pneumatic transmission manner; Step VIII, performing laser detection and mould profile adjustment according to a 3D model of the mould; wherein the upper mould is turned over to be above the lower mould through the turning mechanism, after mould assembly is finished, the part needing to be adjusted is detected through the laser detection mechanism, and then mould profile adjustment of the upper mould and the lower mould after mould assembly is performed through polishing equipment or manpower.

Claims

1. A rigid wind turbine blade mould structure capable of rapidly replacing a mould shell profile, comprising: a stationary supporting structure for supporting an upper mould or a lower mould and a clamping structure for clamping the upper mould and the lower mould; wherein the supporting structure comprises: a cross sectional steel frame (20), bottom support adjusting devices (2), a sectional support frame (3), supporting rods (4), guide rails (5), a connecting device section steel structure (6) and sliding blocks (7), wherein the cross sectional steel frame (20) is arranged on a turning device (1) in a sleeving manner, the bottom support adjusting devices (2) are vertically mounted on the cross sectional steel frame (20), one end of the connecting device section steel structure (6) is vertically and fixedly connected to the bottom of the cross sectional steel frame (20), the other end of the connecting device section steel structure (6) is connected with telescopic rods (61), the guide rails (5) are mounted at the bottom of the cross sectional steel frame (20), one end of each supporting rod (4) is hinged to the corresponding telescopic rod (61), and the other end of each supporting rod (4) moves horizontally and linearly on the corresponding guide rail (5) through the corresponding sliding block (7);.the clamping mechanism comprises: an electromagnet (9), a metal block (10) and a locking device (11), wherein the electromagnet (9) or the metal block (10) are respectively mounted in a flange edge of the upper mould or the lower mould, and the locking device (11) is arranged at a joint of the flange edge of the upper mould and the flange edge of the lower mould in a sleeving manner.

2. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein the connecting device section steel structure (6) and the supporting rods (4) are respectively and symmetrically arranged on the cross sectional steel frame (20).

3. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein a piston rod on each bottom support adjusting device (2) is detachably connected with the corresponding sectional support frame (3).

4. The rigid wind turbine blade mould structure capable of rapidly replace a mould profile according to claim 1, wherein a shape of the sectional support frames (3) is matched with a shape of an outer surface of a mould shell (30) above the sectional support frames.

5. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein the number of the bottom support adjusting devices (2) is at least two.

6. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein the guide rails (5) are fixed at the bottom of the cross sectional steel frame (20) in a threaded connection manner.

7. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 6, wherein bolt holes (8) are formed in the guide rails (5) and configured for limiting the sliding blocks (7).

8. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein the bottom support adjusting devices (2) and the locking device (11) are respectively powered by an air pump system or a hydraulic system connected with a PLC circuit.

9. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein end parts of the two adjacent telescopic rods (61) are respectively and vertically connected with supporting connecting rods (62).

10. The rigid wind turbine blade mould structure capable of rapidly replacing a mould profile according to claim 1, wherein guide concave-convex blocks are arranged on inner surfaces of the flange edges of the upper mould and the lower mould and configured for aligning relative positions of the upper mould and the lower mould.