KR20130013074A - Manufacturing method for frp reflecting panel for light collector and parabolic type light collector using the same thereof - Google Patents

Abstract

PURPOSE: A method for manufacturing a FRP(Fiber Reinforced Plastics) reflecting plate for a condenser and a parabolic type condenser using the same are provided to remarkably improve solar energy generating efficiency by manufacturing the 3D parabolic type condenser and reduce entire weight in comparison with an existing 2D type. CONSTITUTION: A method for manufacturing a FRP reflecting plate for a condenser is as follows. An entire shape of a reflecting plate(6) is a fan-shaped and an inner surface of the reflecting plate has a preset curvature. Two wooden patterns having a shape corresponding to the inner surface and a rear surface of the reflecting plate are formed by embossing. Upper and lower molds for forming the fan-shaped reflecting plate by using the two wooden patterns and FRP are intagliated. The reflecting plates of a desired shape are formed by filling a gap formed between the joined upper and lower molds, which are joined to each other, with the FRP. A reflective surface is formed in the inner surface of the reflecting plate. Binding member through-holes are bored in a reinforcement piece in order to join a plurality of binding members at a preset distance.

Description

Manufacturing method for FRP reflecting panel for light collector and parabolic type light collector using the same approximately}

The present invention relates to a method for manufacturing a FRP reflector for a light collector and a parabolic light collector using the same. More specifically, a solar energy system (ie, a cooling and heating system using solar heat) that generates heat at a high temperature by collecting light at a point. And a plurality of reflecting plates having a two-dimensional shape constituting the reflecting surface of the light collector acting as a power generation system using fiber reinforced composite material (hereinafter referred to as “FRP”), and then combining them with each other. This makes it easy to manufacture parabolic spotlights, also known as parabolic spotlights or parabolic reflectors and par lights, which are narrow and strong beams of light. To invent it.

In other words, FRP material is used to form large three-dimensional parabolic reflectors, and a mirror film is applied to the reflecting surfaces of the reflectors or a chrome film is sprayed. FRP reflector for condenser that can be improved and is simple, high in strength, light and applicable to external environment by combining these reflectors with binding means such as bolts, nuts and wires. It relates to a manufacturing method and a parabolic condenser using the same.

Recently, as fossil fuels are gradually depleted, interest in methods and devices for obtaining power using natural forces is increasing.

As one of the power generating means using the natural force there is a device for collecting electricity to generate electricity.

The solar power generation system generates electricity by driving a power generation facility with solar heat collected from a collector, and the collector uses a plate-type collector having an arc-shaped reflector to generate higher heat by collecting sunlight at one point. have.

Such a concentrator is composed of a reflector plate having a large parabolic surface, that is, a curved surface, in order to reflect solar light having a low energy density into one place to obtain high temperature heat.

That is, the conventional parabolic condenser has a plurality of two-dimensional surfaces on the inner surface of the frame 2 having an arc-shaped curved surface supported by the support 1 and having a form connected in several transverse and longitudinal directions as shown in FIG. The reflector or reflecting plate 3 is configured to be installed, and the reflecting surface connected by the reflecting mirrors or reflecting plates 3 thus installed forms a parabolic surface to collect light at any one point.

In addition, the light collecting portion is provided with a heat collecting portion is formed in the receiving portion accommodating the coiled pipe that collects the solar heat and heat transfer heat exchanged with the collected solar heat is installed, the heat medium of the heat collecting portion circulates through the center of the reflecting plate It has a configuration in which a flowing heat collecting tube is installed.

In the conventional parabolic concentrator, when the entire reflecting surface is manufactured by using several reflectors or reflecting plates having a predetermined area, the individual reflecting plates themselves become two-dimensional reflecting surfaces, and thus the light collecting efficiency is low, or some three-dimensional reflecting plates. Even though it is possible to adjust the focal point formed by the already designed curvature, it requires a separate frame to hold this reflector and it is difficult to manufacture.

In addition, when thickening the three-dimensional piece of glass constituting the reflector there is a problem that the light reflected from the reflective material coated on the back of the glass is reduced while passing through the glass to lower the light collection efficiency.

In other words, the material of the frame used in most conventional parabolic condensers is mainly made of metal or aluminum bar, etc., depending on the size of the truss structure or a separate frame structure, the material of the reflector or reflector mainly acrylic plate or aluminum plate Although using a reflector or a reflector made of such a material, there is a possibility that the shape is greatly changed according to temperature and time or the two-dimensional surface has a problem in that efficiency is lowered.

The present invention has been made to solve such a conventional problem, a plurality of having a conventional two-dimensional shape constituting the reflecting surface of the collector, which operates as a solar energy system that collects light at a point to generate heat of medium and high temperature Instead of the reflector and the separate frame to hold the reflector, FRP uses the mold for excellent corrosion resistance, light, strong, high insulation, low thermal deformation, excellent electrical insulation, free design and processing, and simple features. By manufacturing a three-dimensional reflector plate to avoid the need for a separate frame production, each reflecting plate to the inner surface of the mirror film or by spraying a chrome film or the like to form a reflecting surface, the reflector plate several bolts And by means of fastening means such as nuts and wires. By producing the circular parabolic condenser, the solar heat generation efficiency can be greatly improved compared to the existing two-dimensional plane, and it is very easy to manufacture the reflector and the condenser itself. It is an object of the present invention to provide a method for manufacturing a FRP reflector for a light collector and a parabolic light collector using the same.

In order to achieve the above object, the manufacturing method of the FRP reflective plate for light concentrator of the present invention includes two wooden molds each having an embossed shape such that the overall shape has a fan shape and the inner surface has a shape corresponding to the inner and back shapes of the reflecting plate having a predetermined curvature. Producing a; Engraving the upper and lower molds by engraving the upper and lower molds to form a fan-shaped reflector plate by FRP using the two wood dies; Molding the reflector plates of a desired shape by filling the FRP into the space portion formed therebetween in a state in which the upper and lower molds are engraved with each other; Forming a reflective surface on an inner surface of the reflective plate formed of FRP; Passing through the binding means for coupling the plurality of binding means at a predetermined interval between the protruding side plate and a number of radial strength reinforcing pieces between the two sides, including both sides of the rear surface of the reflective plate protrudingly formed at a radial interval and angle Perforating the ball; characterized in that consisting of.

At this time, the angle between both sides of the reflector having a fan shape is characterized in that it is molded to have any one of 30 degrees, 40 degrees, 45 degrees, 60 degrees.

In addition, the length of the reflecting plate is characterized by having a diameter of 4-8m when a parabolic condenser is manufactured using several reflecting plates by molding to have a length of 2-4m.

At this time, the inner surface curvature of the reflector is characterized in that it is designed to have a different curvature corresponding to the diameter of the light collector produced by the reflector.

In addition, in the circumferential direction on the rear surface of the reflecting plate, several circumferential strength reinforcing protrusions are further protruded integrally at predetermined intervals so that both side plates and several radial strength reinforcing pieces have a mutual lattice shape.

The reflective surface may be formed by attaching a Miller film having a thickness of 0.1-0.2t or by forming a coating film by spraying chromium to a predetermined thickness.

In addition, the binding means includes a plurality of wires for strengthening the binding force of the reflecting plate having a mutually coupled state including several bolts, nuts and washers that directly bind the mutual contact portion of the reflecting plate, and passing through the binding means The ball is characterized in that it comprises a bolt through hole and a wire through hole.

On the other hand, the parabolic condenser using the FRP reflector for the condenser of the present invention for achieving the above object, in the state formed in the FRP several reflector plate provided with a reflecting surface on the inner side, adjacent to each other on both sides Several bolts, each of which is a fastening means, are inserted into and installed in the through-holes of bolts formed in the side plates of the reflecting plates having a shape protrudingly formed in the rear direction and adjacent to each other. Characterized in that they are combined in parabolic form.

In addition, a parabolic condenser having 1-3 wires including piano wires is inserted into a plurality of radial through-hole reinforcing pieces including a plurality of radial direction reinforcing pieces, each of which is formed at predetermined intervals. It is characterized in that the reflecting plates are integrally fixed.

As described above, according to the manufacturing method of the FRP reflector for condenser of the present invention and the parabolic condenser using the same, a two-dimensional concentrator configured as a solar energy system that collects light at one point and generates heat of medium and high temperature When molding a large number of reflecting plates with a mold, three-dimensional using FRP which has excellent corrosion resistance, light weight, strong insulation, high thermal insulation, low thermal deformation, excellent electrical insulation, free design and processing, and simple features. It is necessary to make a reflector in the shape and eliminate the need to manufacture a frame to hold it, but attach a miller film or apply a chrome film in the form of a spray to the inner surface of each reflector having a predetermined curvature corresponding to the diameter of the light collector. And the reflectors may be bound by several bolts, nuts and wires. The parabolic condenser of the three-dimensional shape can be greatly improved by using a method of combining with each other, and the solar heat generating efficiency can be significantly improved compared to the existing two-dimensional plane, and the manufacturing of the reflector and the condenser itself is very easy, and the structure is simple. The strength is very strong, but the weight is light, so that it can be applied to the external environment very useful invention.

1 is a perspective view of a conventional parabolic condenser.
Figure 2 is a perspective view of a parabolic condenser to which the RF Al reflector of the present invention is applied.
Figure 3 is a rear perspective view of the FRP reflector of the present invention.
Figure 4 is a perspective view of the rear part of the combined state of the present invention RF reflector.
Figure 5 (a) (b) is a perspective view of the dies used to manufacture the FRP reflector of the present invention.
Figure 6 (a) (b) is a perspective view of the upper and lower molds formed by using the dies.
Figure 7 is a perspective view showing a state in which the reflective surface attached to the inner surface of the FRP reflector manufactured by the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a parabolic condenser to which an RF Al reflector of the present invention is applied, FIG. 3 is a rear perspective view of the AR F reflecting plate of the present invention, and FIG. Figure 5 (a) (b) is a perspective view of the wooden molds used to manufacture the FRP reflector of the present invention, Figure 6 (a) (b) is formed by using the upper and lower molds 7 shows a perspective view of a mold, and FIG. 7 shows a perspective view showing a state in which a reflective surface is attached to an inner surface of an FRP reflective plate manufactured according to the present invention.

According to this, the manufacturing method of the FRP reflector for condenser of the present invention of the present invention,

Manufacturing two dies (4a) (4b) embossed such that the overall shape is substantially fan-shaped and the inner surface has a shape corresponding to the inner and back shapes of the reflecting plate 6 having a predetermined curvature;

Molding the upper and lower molds 5a and 5b for engraving the fan shaped reflector 6 by FRP using the two dies 4a and 4b;

Forming the reflector plates 6 having a desired shape by filling the FRP into the spaces formed therebetween in a state in which the upper and lower molds 5a and 5b which are intaglio are mutually coupled;

Shaping the reflective surface 7 on the inner surface of the reflective plate 6 formed of FRP;

Including both sides of the rear surface of the reflecting plate 6 between the two sides at a predetermined interval and angle in the radial direction protruded side plate 61 and several radial strength reinforcement piece 62 at a predetermined interval Perforating the binding means through-holes 64 for coupling the binding means 65; characterized in that consisting of.

At this time, the angle between both sides of the reflector 6 having a fan shape is characterized in that it is molded to have any one of 30 degrees, 40 degrees, 45 degrees, 60 degrees.

In addition, the length of the reflector 6 is formed to have a length of 2-4m when a parabolic condenser is manufactured using several reflectors 6, characterized in that the diameter of 4-8m.

At this time, the inner curvature of the reflector 6 is characterized in that it is designed to have a different curvature corresponding to the diameter of the light collector produced by the reflector.

Further, in the circumferential direction on the rear surface of the reflecting plate 6, several circumferential strength reinforcing protrusions 63 are further protruded integrally at predetermined intervals so that both side plates 61 and several radial direction reinforcing pieces 62 are formed. ) And the circumferential strength reinforcing protrusions 63 are characterized in that they have a mutual lattice shape.

In addition, the reflective surface 7 is characterized by being formed by attaching a Miller film having a thickness of 0.1-0.2t or by forming a coating film by spraying chromium to a predetermined thickness.

In addition, the fastening means 65 includes a plurality of bolts 651 and nuts 652 and washers 653 that directly bind the mutual contact portions of the reflecting plates 6 to have the reflecting plate 6 in a coupled state. It includes a plurality of wires 654 for strengthening the binding force of the, and the fastening means through hole 64 is characterized in that it comprises a bolt through hole 641 and the wire through hole (642).

On the other hand, the parabolic condenser using the FRP reflector for the condenser of the present invention,

In the state formed by FRP, several reflecting plates 6 having reflecting surfaces 7 on the inner surface are disposed adjacent to each other, and the side plates of the reflecting plates 6 adjacent to each other have protruding shapes in the rear direction on both sides. Insert and install several bolts 651, which are fastening means 65, respectively, into the bolt through holes 641 drilled in 61, and fasten washers 653 and nuts 652 to the respective bolts 651. It is characterized in that several reflectors 6 are combined in parabolic form.

In addition, 1- including a piano wire in a plurality of wire through holes 642 which are drilled at predetermined intervals in the radial direction reinforcing pieces 62, including both side plates 61 of the reflecting plates 6, respectively. Three wires 654 are inserted to integrally fix the reflecting plates 6 of the light collector having a parabolic shape.

Here, reference numeral 8 is a support plate, 9 is a horizontal rotation means, 10 is a support, 11 is a vertical rotation means, 12 is a condenser fixture, 13 is a heat collecting portion.

Referring to the manufacturing method and the effect of the parabolic condenser using the manufacturing method of the FRP reflector for the light collector of the present invention made as described above are as follows.

First, in the manufacturing method of the present invention, in order to form the reflector 6 using FRP, as shown in FIG. The two dies 4a and 4b are embossed to have shapes corresponding to the inner and back shapes.

At this time, the angle between both sides of the reflector plate 6 having a fan shape is formed to have any one of 30 degrees, 40 degrees, 45 degrees, 60 degrees, that is, the parabolic condenser using the 12 reflecting plates 6 If you want to produce 30 degrees, if you want to produce 9 pieces 40 degrees, if you want to produce 8 pieces 45 degrees, if you want to produce 6 pieces to 60 degrees.

In addition, the length of the reflector 6 is determined to be different from each other according to the diameter of the desired parabolic condenser. In the present invention, a parabolic condenser is formed by using several reflecting plates 6 by molding to have 2-4 m. When manufactured, the diameter was 4-8 m.

In addition, since the inner curvature of the reflector 6 is designed to have different curvatures corresponding to the diameters of the light collectors manufactured by the reflector 6, the value cannot be limited.

Subsequently, the upper and lower molds 5a and 5b for forming the fan-shaped reflector 6 by FRP using the two wood molds 4a and 4b described above are made of metal as shown in Fig. 6 (a) (b). After molding into an intaglio, the FRP is filled into a space formed therebetween while the upper and lower molds 5a and 5b formed in the intaglio are mutually coupled to each other to form a reflective plate 6 as shown in FIG. ) Will be molded.

At this time, the side plate 61 and several radial strength reinforcing pieces 62 are protruded and formed at radial intervals and angles therebetween, including both side surfaces of the rear surface of the reflector plate 6 formed of FRP. As well as having a shape, several circumferential strength reinforcing protrusions 63 in the circumferential direction on the rear surface of the reflecting plate 6 have a form in which the protrusions are integrally formed at a predetermined interval.

That is, both side plates 61 and radial directions for interconnecting the reflecting plates at predetermined intervals and angles in both the radial direction and the circumferential direction, including both side surfaces of the rear surface of the reflector plate 6 formed of the FRP. Several radial strength reinforcing pieces 62 for strengthening the bending strength against and several circumferential strength reinforcing protrusions 63 for strengthening the bending strength for the circumferential direction have a mutual lattice shape and protrude integrally. It will have a molded shape.

As described above, the sunlight is reflected on the collector side by attaching a Miller film having 0.1-0.2t to the inner surface of the reflector plate 6 formed of FRP or forming a coating film by spraying chromium with a predetermined thickness. The main forms the reflective surface 7.

In this manner, the rear side plates 61 of the reflecting plate 6 and the several radial strength reinforcing pieces 62 of the reflecting plate 6 completed until the installation or molding of the reflecting surface 7 have several fastening means ( When the binding means through holes 64 for coupling 65 are drilled, the manufacturing of the reflecting plates 6 for manufacturing the parabolic condenser is completed.

In this case, the fastening means 65 includes several bolts 651, nuts 652, and washers 653 that directly bind the side plates 61 adjacent to each other by mutual contact portions of the reflecting plates 6. It includes a plurality of wires 654 for strengthening the coupling force of the reflecting plate 6 having a state, the fastening means through hole 64 includes a bolt through hole 641 and a wire through hole 642 do.

On the other hand, when manufacturing a parabolic condenser using the FRP reflector plate 6 for the condenser manufactured as described above, first, several reflecting plates 6 provided with a reflecting surface 7 on the inner surface in the state formed in FRP Are arranged adjacent to each other, and each of the fastening means 65 has a form protruded in the rear direction on each side and the bolt passing holes 641 perforated in the side plates 61 of the reflecting plates 6 adjacent to each other. When the two bolts 651 are inserted and fastened to each of the bolts 651, the washer 653 and the nut 652 are fastened to several reflectors 6 in a parabolic form.

Thus, a typhoon or the like may be applied to the collector in a state in which only the side plates 61, which are the contact portions of the reflecting plates 6, are coupled to each other by using only several bolts 651, nuts 652, and washers 653 of the binding means 65. In this case, the side plates 61, etc., to which the reflecting plates 6 are coupled to each other, may be damaged.

Accordingly, in the present invention, as shown in FIG. 4, the wire passing holes 642 are drilled at predetermined intervals in the radial strength reinforcing pieces 62 including both side plates 61 of the reflecting plates 6, respectively. Bonding strength that can withstand typhoons or the like by double fixing the reflecting plates 6 by integrally fixing the reflecting plates 6 of a light collector having a parabolic shape by inserting at least one or three wires 654 including a piano wire. Will have

FIG. 2 is a support plate 8 fixed to the ground in a state of a parabolic light collector manufactured as described above, provided with a heat collecting portion having an accommodating portion for accommodating coiled pipes through which heat medium exchanges heat with the collected solar heat. In the upper portion of the horizontal rotation means 9 for automatically rotating the parabolic condenser itself in the horizontal direction corresponding to the position of the sun is provided, the support 10 in the vertical direction of the horizontal rotation means (9) Of course, between the support 10 and the light collector fixture 12 is provided with a vertical rotation means 10 for automatically rotating the vertical angle of the parabolic light collector itself corresponding to the position of the sun, the horizontal It is a perspective view showing the state to be fixed to the condenser fixing fixture 12 installed on the upper portion of the directional rotation means 10 to be used.

As described above, in the present invention, in forming the reflector 6 required for manufacturing the parabolic condenser, the upper and lower molds in which the shapes corresponding to the inner surface and the back of the reflector 6 are intaglio are formed, and the material is corrosion resistant. It is manufactured by using FRP which is excellent, light, strong, high thermal insulation, low thermal deformation, excellent electric insulation, free design and processing, and simple, and also attach a miller film to the inner surface of each reflector 6 By forming a reflective surface 7 by coating a chromium coating film or the like in the form of a spray, the solar heat generating efficiency can be significantly improved compared to a conventional two-dimensional surface.

In addition, by manufacturing the three-dimensional parabolic condenser by the method of coupling the several reflecting plate 6 to each other using a fastening means 65 such as several bolts and nuts, the manufacturing of the reflecting plate and the condenser itself It is very easy and simple in structure and strong in strength but light in weight, which can greatly reduce the cost of installation and maintenance.

In addition, several reflection plates 6 are double-bonded by using several wires 654 on the rear surfaces of the reflection plates 6 of the light collector coupled in a parabolic form by several bolts and nuts. And it does not burn and endures well in the external environment can significantly improve the merchandise and reliability of the light collector itself.

It should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

4a, 4b: die 5a, 5b: upper and lower molds
6: reflector
61: side plate 62: radial strength reinforcement
63: circumferential strength reinforcement projection 64: fastening means through hole
641: bolt through hole 642: wire through hole
65: binding means
651: bolt 652: nut
653: washer 654: wire
7: reflection surface 8: support plate
9 horizontal rotation means 10 support
11: vertical rotation means 12: condenser fixture
13: heat collector

Claims (9)

Manufacturing two wooden dies with an embossed shape such that the overall shape has a fan shape and the inner surface has a shape corresponding to an inner surface and a back shape of a reflecting plate having a predetermined curvature;
Engraving the upper and lower molds by engraving the upper and lower molds to form a fan-shaped reflector plate by FRP using the two wood dies;
Molding the reflector plates of a desired shape by filling the FRP into the space portion formed therebetween in a state in which the upper and lower molds are engraved with each other;
Forming a reflective surface on an inner surface of the reflective plate formed of FRP;
A binding means through-hole for coupling several binding means at both sides of the rear surface of the reflecting plate and at a predetermined interval and angle in a radial direction therebetween, and a predetermined distance between the side plate formed in the radial direction and several radial strength reinforcing pieces. Perforating them; manufacturing method of the FRP reflector for a light collector, characterized in that consisting of.
The method according to claim 1,
An angle between both sides of the reflector having a fan shape is molded to have any one of 30 degrees, 40 degrees, 45 degrees, 60 degrees. The method according to claim 1,
The length of the reflecting plate is formed to have a length of 2-4m when manufacturing a parabolic condenser using a number of reflecting plate to have a diameter of 4-8m characterized in that the FRP reflector for a light collector.
The method according to claim 1,
The inner surface curvature of the reflecting plate is a manufacturing method of the FRP reflector for a light collector, characterized in that designed to have a different curvature corresponding to the diameter of the light collector produced by the reflecting plates.
The method according to claim 1,
The circumferential direction of the reflector plate in the circumferential direction several circumferential strength reinforcement protrusions are integrally further protruded at a predetermined interval so that both side plates and several radial strength reinforcement pieces have a mutual grid shape. Method of manufacturing Alfie reflector.
The method according to claim 1,
The reflective surface is formed by attaching a Miller film having a thickness of 0.1-0.2t, or by forming a coating film by spraying chromium in a predetermined thickness.
The method according to claim 1,
The binding means includes several bolts for fastening the mutual contact portions of the reflecting plates, and several wires for strengthening the bonding force of the reflecting plates having a mutually coupled state, including several bolts, nuts and washers. A manufacturing method of the FRP reflector for a light collector comprising a through hole and a wire through hole.
Bolt-through holes drilled in the side plates of the reflecting plates, each of which is formed in the form of FRP adjacent to each other with a reflecting plate provided with a reflecting surface on the inner side adjacent to each other, and protruded in the rear direction on each side and adjacent to each other And a plurality of bolts, each of which is a fastening means, are inserted into the plurality of bolts, and a plurality of reflecting plates are coupled in a parabolic form by fastening washers and nuts to the respective bolts.
The method according to claim 8,
Reflector of the condenser having a parabolic shape by inserting 1-3 wires including piano wires into a plurality of wire through holes drilled at predetermined intervals in each of the radial strength reinforcement pieces including both side plates of the reflecting plates. Parabolic condenser using the FRP reflector for the condenser, characterized in that the fixed integrally.

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