CN111559038A

CN111559038A - Wind driven generator blade filling machine

Info

Publication number: CN111559038A
Application number: CN202010608488.1A
Authority: CN
Inventors: 梁志刚; 梁昊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-08-21

Abstract

The invention provides a wind driven generator blade filling machine, which comprises: the material conveying device, the material mixing device and the filling forming device are sequentially communicated; the mixing device comprises a mixer and a distributor which are communicated, the mixer is communicated with the material conveying device, and the distributor is communicated with the filling forming device; wherein, the blender includes venturi mixer and the static mixer that is linked together, just venturi mixer with the feeding device is linked together, static mixer with the distributor is linked together. In the process of mixing the resin and the curing agent, the Venturi mixer and the static mixer are sequentially connected, so that the problem that the mixing ratio of the resin and the curing agent is influenced due to unbalanced conveying pressure of each fluid at present is well solved, the resin and the curing agent are fully and uniformly mixed, and the problems of heat release, viscosity increase and the like of the resin in the follow-up process are avoided.

Description

Wind driven generator blade filling machine

Technical Field

The invention relates to the technical field of wind driven generator blade manufacturing, in particular to a wind driven generator blade filling machine.

Background

The traditional vacuum suction and injection process in the manufacturing process of the wind driven generator blade is a composite material molding process, wherein a dry fiber reinforced material preformed body is laid in a mold, resin is mixed by premixing equipment, then conveyed to the root of the blade mold through an open vessel, sucked into a mold cavity under the action of vacuum negative pressure to fully infiltrate the preformed body, and a molded product is obtained by heating, curing and demolding.

The traditional blade manufacturing process has the advantages of simple and easy operation, but along with the development and manufacturing of novel large-size blades, a large amount of premixed resin is needed for standby at the initial stage in the blade manufacturing process. The heat release phenomenon exists in the resin in the later stage of operation, the viscosity of the resin is increased, the operation difficulty is increased, and meanwhile the blade quality is reduced. The influence factor is large due to manual operation. The operational risk is increased. And secondly, the resin amount manufactured by the large blade is correspondingly increased, the operation time is also correspondingly increased, and the resin consumption is additionally increased when the resin suction amount is not effectively controlled. The resin content of the blade structure layer is increased, and the strength of the structure layer is reduced. It also results in increased costs and unnecessary waste. In addition, the process is additionally provided with a resin defoaming process in a vacuum state of the premixed resin, and a defoaming time of 5 to 10 minutes is also needed. So that the suction operation time of the resin is more tensed.

Disclosure of Invention

Therefore, the invention aims to provide a wind driven generator blade filling machine which can fully mix resin and a curing agent and avoid the subsequent problems of resin heat release, viscosity increase and the like.

Further, the feeding device comprises a resin feeding pipeline and a curing agent feeding pipeline, the venturi mixer comprises a main feeding hole, an auxiliary feeding hole and a discharging hole, the main feeding hole is communicated with the resin feeding pipeline, the auxiliary feeding hole is communicated with the curing agent feeding pipeline, and the discharging hole is communicated with the static mixer.

Further, the resin conveying pipeline comprises a resin barrel, a resin pump, a first pressure gauge and a first flow meter which are sequentially communicated, the first flow meter is communicated with the venturi mixer, and the resin pump is a peristaltic pump.

Further, a first three-way valve is arranged between the first flowmeter and the venturi mixer and communicated with a feed inlet of the resin pump through a pipeline to form a resin flow monitoring loop.

Further, a heating box is arranged between the resin barrel and the resin pump.

Further, the curing agent conveying pipeline comprises a curing agent barrel, a curing agent pump, a second pressure gauge and a second flowmeter which are sequentially communicated, the second flowmeter is communicated with the Venturi mixer, and the curing agent pump is a peristaltic pump.

Further, a second three-way valve is further arranged between the second flowmeter and the venturi mixer and communicated with a feed inlet of the curing agent pump through a pipeline to form a curing agent flow monitoring loop.

Furthermore, the distributor is provided with 5-10 mixed resin discharge ports.

Further, the pouring forming device comprises a flow guide pipe and a die which are communicated, and the flow guide pipe is communicated with the mixed resin discharge hole.

Further, the device also comprises a controller, and the controller is in control connection with the material conveying device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block diagram of a wind turbine blade casting machine;

FIG. 2 depicts a block diagram of a venturi mixer;

fig. 3 shows a structural diagram of a static mixer.

In the drawings are labeled:

1 resin bucket

2 curing agent barrel

3 heating box

4 resin pump

5 first pressure gauge

6 first flowmeter

7 first three-way valve

8 curing agent pump

9 second pressure gauge

10 second flow meter

11 second three-way valve

12 mixer

121 Venturi mixer

1211 main feed opening

1212 auxiliary feed inlet

1213 discharge port

122 static mixer

13 Dispenser

14 controller

15 honeycomb duct

16 mould

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and 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 considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An embodiment of the present invention provides a wind turbine blade perfusion apparatus, as shown in fig. 1, including: the material conveying device, the material mixing device and the filling forming device are sequentially communicated; the mixing device comprises a mixer 12 and a distributor 13 which are communicated, the mixer 12 is communicated with the material conveying device, and the distributor 13 is communicated with the pouring forming device; as shown in fig. 2 and 3, the mixer 12 includes a venturi mixer 121 and a static mixer 122 which are communicated with each other, the venturi mixer 121 is communicated with the feeding device, and the static mixer 122 is communicated with the distributor. In the process of mixing the resin and the curing agent, the Venturi mixer 121 and the static mixer 122 are sequentially connected, so that the problem that the mixing ratio of the resin and the curing agent is influenced due to unbalanced fluid conveying pressure at present is well solved, the resin and the curing agent are fully and uniformly mixed, and the problems of heat release, viscosity increase and the like of the resin in the follow-up process are avoided.

Wherein, the feeding device includes the defeated pipeline of resin and the defeated pipeline of curing agent, refer to fig. 2, venturi mixer 121 includes main feed inlet 1211, vice feed inlet 1212 and discharge gate 1213, main feed inlet 1211 with the defeated pipeline of resin is linked together, vice feed inlet 1212 with the curing agent defeated pipeline communicates, discharge gate 1213 with static mixer 122 is linked together. The venturi mixer 121 has the performance of a jet booster pump, and the pressure of the material outlet 1213 is made to reach the required pressure under the condition that the secondary flow rate flowing into the secondary inlet 1212 is ensured. The venturi mixer 121 is mainly composed of a nozzle, a receiving chamber, a mixing chamber, a diffuser, etc., and a pressure drop is generated by the main flow flowing in through the main inlet 1211 through the nozzle, the sub flow is drawn into the receiving chamber of the venturi mixer 121, the main flow and the sub flow are mixed in the mixing chamber and then pass through the diffusion chamber, and at this time, the outlet pressure to the diffusion chamber is greater than the inlet pressure of the sub flow and less than the inlet pressure of the main flow, so that the mixed fluid can be smoothly delivered to the static mixer 122 for mixing.

In one aspect of the embodiment of the present invention, the resin delivery pipeline includes a resin barrel 1, a resin pump 4, a first pressure gauge 5 and a first flow meter 6, which are sequentially communicated, and the first flow meter 6 is communicated with the venturi mixer 121; wherein the resin pump 4 is a peristaltic pump. The resin barrel 1 is used for containing resin raw materials before mixing, the resin pump 4 is used for pumping the resin from the resin barrel 1, the first pressure gauge 5 is used for monitoring the pressure of the resin in the pipeline, and the first flow meter 6 is used for monitoring the flow rate of the resin in the pipeline. Preferably, the resin pump 4 is a peristaltic pump, the peristaltic pump is more favorable to ensuring the flow stability and uniformity of the resin compared with a gear pump commonly used in the prior art, the fresh resin directly enters the die cavity after being mixed, and the problems of heat release and viscosity increase do not exist in the mixed resin.

Preferably, a first three-way valve 7 is further disposed between the first flow meter 6 and the venturi mixer 121, and the first three-way valve 7 is communicated with the feed port of the resin pump 4 through a pipeline to form a resin flow rate monitoring circuit. The setting of first three-way valve 7 plays the effect of flow stability monitoring before filling resin mixture, specifically, before resin gets into venturi mixer 121 and mixes, switch on resin flow monitoring return circuit through first three-way valve 7 earlier, open resin pump 4, through the stability of this in-process resin flow of first flowmeter 6 monitoring, treat that the flow is stable after first three-way valve 7 switch on venturi mixer 121 of rethread to guarantee that the flow of the resin of inputing venturi mixer 121 is stable.

Further preferably, a heating box 3 is further provided between the resin barrel 1 and the resin pump 4. The heating box 3 is used for heating the resin, can be used in the environment with cold outside temperature, and avoids the viscosity of the resin to be overlarge.

In one aspect of the embodiment of the present invention, the curing agent conveying pipeline includes a curing agent barrel 2, a curing agent pump 8, a second pressure gauge 9 and a second flow meter 10, which are sequentially communicated, and the second flow meter 10 is communicated with the venturi mixer 121; wherein, the curing agent pump 8 is a peristaltic pump. The curing agent barrel 2 is used for containing curing agent raw materials, the curing agent pump 8 is used for pumping curing agents from the curing agent barrel 2, the second pressure gauge 9 is used for monitoring the pressure of the curing agents in the pipeline, and the second flow meter 10 is used for monitoring the flow of the curing agents in the pipeline. Preferably, the curing agent pump 8 is a peristaltic pump, and the peristaltic pump is more favorable to ensuring the flow stability and uniformity of the curing agent compared with a gear pump commonly used in the prior art, so that the fresh resin directly enters the mold cavity after being mixed, and the problems of heat release and viscosity increase of the mixed resin do not exist.

Preferably, a second three-way valve 11 is further disposed between the second flowmeter 10 and the venturi mixer 121, and the second three-way valve 11 is communicated with the feed inlet of the curing agent pump 8 through a pipeline to form a curing agent flow monitoring circuit. The setting of second three-way valve 11 plays the effect of flow stability monitoring before filling the curing agent mixture, specifically, before the curing agent gets into venturi mixer 121 and mixes, earlier put through curing agent flow monitoring return circuit through second three-way valve 11, open curing agent pump 8, monitor the stability of this in-process curing agent flow through second flowmeter 10, treat that the flow is stable after rethread second three-way valve 11 switch-on venturi mixer 121 to the flow stability of the curing agent of assurance input to venturi mixer 121.

In one aspect of the embodiment of the present invention, 5 to 10 discharge ports for the mixed resin are provided in the distributor 13. The pouring forming device comprises a guide pipe 15 and a die 16 which are communicated, and the guide pipe 15 is communicated with the mixed resin discharge hole. Because the discharge ports of the mixed resin are arranged more, one distributor 13 can simultaneously supply a plurality of guide pipes 15 so as to meet the requirements of the blade manufacturing process.

In one aspect of the embodiment of the present invention, the device further comprises a controller 14, and the controller 14 is in control connection with the feeding device. Specifically, the controller 14 may be configured to receive monitoring signals of the first pressure gauge 5, the first flow rate 6, the second pressure gauge 9, and the second flow meter 10, and simultaneously control the connection of the resin pump 4 and the curing agent pump 8, so as to adjust the resin pump 4 and the curing agent pump 8 according to the monitoring signals of the first pressure gauge 5, the first flow rate 6, the second pressure gauge 9, and the second flow meter 10. Further, the controller 14 can be in control connection with the first three-way valve 7 and the second three-way valve 11 for automatic adjustment of the flow stability of the resin and the curing agent.

In conclusion, the flow of the resin is controllable, the pouring process time can be shortened, the resin consumption is more accurate, the resin consumption is saved, and the production cost is effectively reduced; the resin has no operation of preparing glue and pouring into a barrel, the problem of air inlet of a die cavity is avoided, and the product quality is improved; the problem of transportation does not exist after the resin is mixed, and operating personnel are saved. Labor cost is saved; the resin dosage is stable, and the product consistency is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind turbine blade casting machine, comprising:

the material conveying device, the material mixing device and the filling forming device are sequentially communicated;

the mixing device comprises a mixer and a distributor which are communicated, the mixer is communicated with the material conveying device, and the distributor is communicated with the filling forming device;

wherein, the blender includes venturi mixer and the static mixer that is linked together, just venturi mixer with the feeding device is linked together, static mixer with the distributor is linked together.

2. The wind turbine blade casting machine according to claim 1,

the material conveying device comprises a resin material conveying pipeline and a curing agent material conveying pipeline, the Venturi mixer comprises a main feeding hole, an auxiliary feeding hole and a discharging hole, the main feeding hole is communicated with the resin material conveying pipeline, the auxiliary feeding hole is communicated with the curing agent material conveying pipeline, and the discharging hole is communicated with the static mixer.

3. The wind turbine blade casting machine according to claim 2,

the resin conveying pipeline comprises a resin barrel, a resin pump, a first pressure gauge and a first flow meter which are sequentially communicated, and the first flow meter is communicated with the Venturi mixer;

wherein the resin pump is a peristaltic pump.

4. The wind turbine blade casting machine according to claim 3,

and a first three-way valve is further arranged between the first flowmeter and the Venturi mixer and communicated with a feed inlet of the resin pump through a pipeline so as to form a resin flow monitoring loop.

5. The wind turbine blade casting machine according to claim 3,

and a heating box is also arranged between the resin barrel and the resin pump.

6. The wind turbine blade casting machine according to claim 2,

the curing agent conveying pipeline comprises a curing agent barrel, a curing agent pump, a second pressure gauge and a second flowmeter which are sequentially communicated, and the second flowmeter is communicated with the Venturi mixer;

wherein the curing agent pump is a peristaltic pump.

7. The wind turbine blade casting machine according to claim 6,

and a second three-way valve is further arranged between the second flowmeter and the Venturi mixer and communicated with a feed inlet of the curing agent pump through a pipeline so as to form a curing agent flow monitoring loop.

8. The wind turbine blade casting machine according to claim 1,

the distributor is provided with 5-10 mixed resin discharge ports.

9. The wind turbine blade casting machine according to claim 8,

the pouring forming device comprises a flow guide pipe and a die which are communicated, and the flow guide pipe is communicated with the mixed resin discharge hole.

10. The wind turbine blade casting machine according to any one of claims 1 to 9,

the device further comprises a controller, and the controller is in control connection with the material conveying device.