CN205336215U - Multisection section trussed girder of dish formula spotlight ware rack - Google Patents

Abstract

The utility model discloses a multi-segment truss beam of a dish-type concentrator net frame, a front end truss, several lengthened trusses and a tail end truss, several lengthened trusses are connected to form an elongated member, the front end of the elongated member and the tail end of the front end truss Connection; the end of the extension member is connected to the front end of the end truss. The utility model divides the truss girder into multiple sections, and the multi-section truss beams are connected by bolts, which can adapt to different concentrator design sizes. During transportation, the multi-section truss beams are all short, which is convenient for transportation; The overall structure is installed in sections, no external hoisting equipment is required, and the operation is safe and convenient; the truss beams of each section of the utility model adopt different cross-sectional sizes, which can better play the bearing role of the material and effectively reduce the load of the concentrator network. The quality of the frame structure is low, and the production cost is low; in addition, the interior of each welded component of the utility model is airtight, which can effectively prevent internal corrosion and prolong its service life.

Description

A multi-segment truss beam of dish concentrator grid

technical field

The utility model relates to a dish-type concentrator network frame, in particular to a multi-segment truss beam of the dish-type concentrator network frame, and belongs to the technical field of solar thermal power generation.

Background technique

Solar energy is clean, environmentally friendly and renewable energy with sufficient supply, but it has low energy flow density and is easily affected by the environment. To realize high-grade solar thermal utilization of solar energy, it must be gathered in a large area. Due to the characteristics of high power generation efficiency and flexible application, the dish/Stirling photothermal power generation system has broad application space and value. Since the dish concentrator works in an open-air environment, it generally has a large windward scale and poor ventilation, and to meet the effective concentrating operation at a certain wind speed, the rigidity, strength and anti-corrosion treatment of the concentrator skeleton structure need to be focused. consider.

The main load-bearing structure in the concentrator skeleton is the truss beam, which is generally formed by bending or welding profiles, and the upper and lower chords of the truss beam are welded with profiles of the same material and type. But for a large concentrator structure, firstly, due to the size limitation of transportation, it is inconvenient to use an integral welded structure for transportation. Secondly, when the concentrator structure is installed on site, the mass of the truss girder is relatively large, and external hoisting equipment is required for auxiliary installation, and the operation is not flexible. Finally, the concentrator is the main load-bearing structure, and the load-bearing characteristics of the truss beam are similar to that of the cantilever beam. The root section of the truss beam designed based on the stiffness and strength of the structure is generally large or the material strength is high (expensive). Welding a single profile will result in a large truss girder mass, and most of the materials do not fully play their bearing role. Some of the above defects will directly or indirectly increase the investment cost of the initial construction of the solar thermal power station and affect the economic performance of the power station.

In addition, the rated operating time of solar thermal power plants is generally 25 years. Due to the impact of acid rain and sandstorms, the anti-corrosion treatment of the truss beam structure and the convenience of maintenance and operation are also crucial. The currently used truss beams formed by welding open-section profiles such as angle steel or channel steel have a large external area of the structure, and there are many edges and corners or welded corner seams. Difficult and not easy to cover all. At the same time, although some truss girder structures adopt tubular structures, bolt holes are opened on the tubular structures or sealing plates are not added at the ends, so that the components of the truss girder structure do not really form a closed space, and internal corrosion and It is extremely difficult to carry out internal anti-corrosion treatment, and the maintenance cost is high.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides a multi-segment truss beam of dish-type concentrator grid frame which is convenient for transportation, flexible in installation and operation, and low in maintenance cost, which can ensure the formation of a closed space inside the components of the entire truss beam , effectively protects its interior from corrosion, and has a long service life.

The technical solution adopted by the utility model is: a multi-segment truss beam of a dish-type concentrator grid, including a front end truss and a tail end truss, the front end of the front end truss is provided with a fixing seat, and the tail end of the front end truss and the tail end The front connection of the truss.

In the multi-segment truss beam of the above-mentioned dish-type concentrator grid, it also includes a number of lengthened trusses, and the lengthened trusses are connected to form a lengthened member, and the front end of the lengthened member is connected with the tail end of the front end truss; The front connection of the truss.

In the multi-segment truss beam of the above-mentioned dish-type concentrator grid, the front end truss includes two first chords, and fixed seats are respectively welded on the opposite surfaces of the front ends of the two first chords; the two first chords The tail ends of the rods are all provided with first flange plates; the extended truss includes two second chords, and the front ends of the two second chords are all provided with second flange plates; the tail ends of the two second chords of the extended truss are both There is a third flange plate, and the two adjacent extended trusses are connected by bolts to form an extended member; the tail truss includes two third chords, and the front ends of the two third chords are equipped with a fourth flange plate, and the third chord The tail end of the rod is arc-shaped; the first flange plate at the tail end of the front end truss is connected by bolts to the second flange of the lengthened truss at the front end of the elongated member; the third flange of the elongated truss at the end of the elongated member is connected by bolts Connect with the fourth flange of the end truss.

In the multi-segment truss girder of the above-mentioned dish-type concentrator grid, first connecting plates are welded on both sides of the first chord, and second connecting plates are welded on both sides of the third chord , the first connecting plate and the second connecting plate are provided with threaded holes.

In the above-mentioned multi-segment truss beam of the dish-type concentrator grid, the two first chords of the front end truss are welded into a whole by multiple webs, and the two second chords of the extended truss are welded by multiple webs Integral; the two third chords of the tail truss are welded into a whole through multiple webs; the cross-sectional size of the first chord is larger than that of the second chord; the cross-sectional size of the second chord is larger than that of the third chord Section size; the section size of the web of the front truss is larger than that of the extended truss; the section size of the web of the extended truss is larger than that of the tail truss; the first chord, the second chord, the third chord The cross-sections of the rod and the web are both hollow and closed geometric shapes, and the strength of the materials used are all successively reduced.

In the multi-segment truss beam of the above-mentioned dish-type concentrator grid, the front end of the first chord is provided with a sealing cover plate, and the sealing cover seals the inner hole opening of the first chord.

In the above-mentioned multi-segment truss beam of the dish concentrator grid, a reinforcement rod is welded near the first flange plate of the front end truss, and the two ends of the reinforcement rod are respectively connected to two first chords; the second flange of the extended truss There are reinforcing rods welded near the plate and the third flange plate, and the two ends of the reinforcing rods are respectively connected to two second chords; the fourth flange plate of the tail end truss is welded with reinforcing rods; .

In the multi-segment truss beam of the above-mentioned dish-type concentrator grid, the first chord is provided with a tapered transition section, and reinforcing rods are welded near the tapered transition section of the two first chords; The second chord is provided with a conical transition section, and reinforcing rods are welded near the conical transition section of the two second chords; the third chord is provided with a conical transition section, and the conical transition section of the two third chords There are reinforcing rods welded near the section.

In the multi-segment truss girder of the above-mentioned dish-type concentrator grid, the webs of the first chord, the second chord, the third chord and the front-end truss, the extended truss and the tail-end truss are provided with For the process hole treated with anti-corrosion inside, there is a plug at the process hole.

Compared with the prior art, the beneficial effect of the utility model is: the utility model divides the truss beam into multiple sections, and the multi-section truss beams are connected by bolts, which can adapt to different concentrator design sizes. During transportation, the multi-section truss The beams are relatively short, which is convenient for transportation; during manual installation, because it is not an integral structure, each section is relatively light and does not require external hoisting equipment, and the operation is safe and convenient; the truss beams of each section of the utility model adopt different The cross-sectional size and material can better play the bearing role of the material, effectively reduce the quality of the concentrator grid structure, and reduce the production cost; in addition, the interior of each welding component of the utility model is airtight, which can effectively It prevents internal corrosion and prolongs the service life of the utility model.

Description of drawings

Fig. 1 is an axonometric view of the utility model.

Fig. 2 is an axonometric view of the utility model when it is used for a concentrator grid.

Fig. 3 is a structural diagram of the first scheme of two-segment truss connection.

Fig. 4 is a structural diagram of the second scheme of two-segment truss connection.

Fig. 5 is a structural diagram of the third scheme of two-segment truss connection.

Fig. 6 is a structural diagram of the first connection mode among the first chord, the second chord and the third chord.

Fig. 7 is a structural diagram of the second connection mode between the first chord, the second chord and the third chord.

Fig. 8 is a structural diagram of a third connection mode between the first chord, the second chord and the third chord.

Fig. 9 is a structural diagram of a fourth connection mode between the first chord, the second chord and the third chord.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in FIG. 1 , the utility model includes a front end truss 7 , an extended truss 10 and a tail end truss 11 . The front-end truss 7 includes two first chords 4, and the first chords 4 are welded into a whole through the webs 6; the cross-sections of the first chords 4 and the webs 6 are hollow and airtight; The front end of the front end is welded with a sealing cover plate 1, and the sealing cover plate 1 seals the inner hole opening of the first chord 4. The two first chords 4 are welded with fixing seats 2 on the opposite surfaces of the front ends respectively, and the side faces near the fixing seats are welded with reinforcing plates 3, and the two sides of the first chord 4 are welded with connecting plates 14, and the connecting plates 14 are provided with Has threaded holes. The tail end of the first chord 4 is welded with a first flange plate 41 , and the first flange plate 41 is perpendicular to the first chord 4 .

The extended truss 10 includes two second chords 5, and the two second chords 5 are welded into a whole through webs; the front ends of the two second chords 5 are respectively welded with second flange plates perpendicular to the second chords 5 51 , the two second flange plates 51 are respectively connected to the corresponding first flange plates 41 through bolts, so as to realize the connection between the front end truss 7 and the extended truss 10 . The tail ends of the two second chords 5 are respectively welded with third flange plates 52 perpendicular to the second chords 5 . The sections of the second chord 5 and the web of the extended truss 10 are both hollow and airtight.

The tail end truss 11 includes two third chords 9, and the two third chords 9 are welded into a whole through the web, and the sections of the third chord 9 and the web are both hollow and airtight. The front ends of the two third chords 9 are respectively welded with fourth flange plates 91 perpendicular to the third chords 9; the fourth flange plates 91 are connected to the third flange plate 52 through bolts, realizing the extension of the truss 10 and the Connection of tail truss 11. Connecting plates 92 are welded on both sides of the third chord 9 , and threaded holes are arranged on the connecting plates 92 . The tail end of the third chord 9 is arc-shaped, and is located in the projection area of the concentrator parabolic reflector along the focal axis.

The webs of the first chord 4, the second chord 5, the third chord 9, the front end truss 7, the extended truss 10 and the tail end truss 11 are provided with process holes 12 for internal anti-corrosion treatment. The hole 12 is provided with a plug 13 for sealing, which can effectively protect the inner surface from corrosion.

The cross-sectional size of the first chord 4 is larger than that of the second chord 5 , and the cross-sectional size of the second chord 5 is larger than that of the third chord 9 . The cross-sectional size of the web of the front-end truss 7 is larger than that of the extended truss 10; In this way, the utility model can better exert the bearing function of the material, and effectively reduce the quality of the grid structure of the concentrator. Moreover, in order to further save manufacturing costs, the material strengths of the front end truss 7 , the extended truss 10 and the rear end truss 11 can be successively decreased.

As shown in Figure 2, the front-end truss 7 of the present invention is fixed by a plurality of bolt assemblies through the fixing base 1 and the central body 16 of the concentrator grid, and a plurality of the central body 16 are uniformly fixed along the circumferential direction of the central body 16. , and through the ring rod 17 and the connecting plate 14 of the present utility model are fixed by bolts, and then form the concentrator grid. The utility model can be formed by connecting the front-end truss 7 and the tail-end truss 11. The quantity of the lengthened truss 10 can be selected according to the length and load-bearing conditions of the concentrator grid design. Several lengthened trusses 10 are connected into an elongated member, and the The front end is connected with the tail end of the front end truss 7, and the tail end of the elongated member is connected with the front end of the tail end truss 11.

As shown in Figures 3 to 5, reinforcing rods 19 can be welded near the first flange plate 41 of the front end truss 7, and the two ends of the reinforcing rods 19 are respectively connected to two first chords 4; the first chords 4 can be provided with The conical transition section, near the conical transition section of the two first chords 4 can be welded with reinforcing rods 19 to strengthen the front truss 7 . The second flange plate 51 and the third flange plate 52 of the extended truss 10 can be welded with reinforcing rods 19, and the two ends of the reinforcing rods 19 are respectively connected to two second chords 5; the second chords can be provided with conical In the transition section, the lengthened truss 10 can be strengthened by welding reinforcing rods 19 near the tapered transition sections of the two second chords. The fourth flange plate of the tail end truss 11 is welded with a reinforcing rod 19; two ends of the reinforcing rod 19 are respectively connected with two third chords. The third chord can be provided with a tapered transition section, and the tail end truss 11 can be strengthened by welding a reinforcing rod 19 near the tapered transition section of the two third chords.

As shown in FIGS. 6-9 , there are various schemes for connecting the first chord 4 , the second chord 5 and the third chord 9 . Solution 1: As shown in Figure 6, the flange plate is welded at the end and connected with bolts. The second solution: as shown in Figure 7, when the size of the utility model is small, it can be connected by welding the connecting ends on the same flange plate. The third solution: as shown in FIG. 8 , the joint is connected by welding a tapered transition section 20 . Solution 4: As shown in Figure 9, a tapered transition section is processed at the end of the side with the larger cross-sectional size between the two that need to be connected, and the end of the transition section is the same as the cross-sectional size of the side with the smaller cross-sectional size. consistent, and soldered.

The utility model divides the truss beams into multiple sections, and the multi-section truss beams are connected by bolts, which can adapt to different design sizes of concentrators. During transportation, the multi-section truss beams are all relatively short, which is convenient for transportation. During manual installation, because it is not an integral structure, each section is relatively light and does not require external hoisting equipment, and the operation is safe and convenient; the truss beams of each section of the utility model adopt different cross-sectional sizes and materials, which can be more The load-bearing function of the material is well played, which effectively reduces the quality of the concentrator grid structure and reduces the production cost. In addition, the interior of each welding component of the utility model is airtight, which can effectively prevent internal corrosion and prolong its service life.

Claims (9)

1. a kind of multi-segment truss beam of dish concentrator net frame, it is characterized in that: comprise front end truss and tail end truss, the front end of front end truss is provided with fixed seat, the tail end of front end truss and the front end of tail end truss connect. 2. the multi-segment truss beam of dish concentrator grid according to claim 1, is characterized in that: also comprise some extension trusses, extension truss is connected into an extension member, the front end of extension member and the tail end of front end truss Connection; the tail end of the extension member is connected to the front end of the tail truss. 3. The multi-segment truss beam of the dish concentrator grid according to claim 2, wherein the front end truss comprises two first chords, and the front ends of the two first chords are opposite to each other. Fixing seats are respectively welded; the tail ends of the two first chords are provided with first flange plates; the extended truss includes two second chords, and the front ends of the two second chords are provided with second flange plates; the extended truss The tail ends of the two second chords are equipped with third flange plates, and the adjacent two extended trusses are connected by bolts to form an elongated member; the tail end trusses include two third chords, and the front ends of the two third chords are equipped There is a fourth flange plate, and the tail end of the third chord is arc-shaped; the first flange plate at the tail end of the front end truss is connected with the second flange of the lengthened truss at the front end of the elongated member through bolts; the end of the elongated member The third flange of the end extension truss is connected with the fourth flange of the tail end truss through bolts. 4. The multi-section truss girder of dish concentrator grid according to claim 3, characterized in that: the first connecting plate is welded on both sides of the first chord, and the third chord Second connecting plates are respectively welded on both sides, and threaded holes are provided on the first connecting plate and the second connecting plate. 5. The multi-segment truss beam of dish concentrator grid according to claim 3, characterized in that: the two first chords of the front end truss are welded into a whole by a plurality of webs, and the two lengthened trusses The second chord is welded into a whole through a plurality of webs; the two third chords of the tail truss are welded into a whole through a plurality of webs; the cross-sectional size of the first chord is larger than that of the second chord; the second chord The cross-sectional size of the bar is larger than that of the third chord; the cross-sectional size of the web of the front truss is larger than that of the extended truss; the cross-sectional size of the web of the extended truss is larger than that of the tail truss; the first chord The cross-sections of the bar, the second chord, the third chord and the web are all hollow and closed geometric shapes, and the strength of the materials used are all reduced in order. 6. The multi-segment truss beam of dish concentrator grid according to claim 3, characterized in that: the front end of the first chord is provided with a sealing cover, and the sealing cover seals the first chord The inner hole of the rod. 7. The multi-segment truss beam of dish concentrator grid according to claim 3 or 5, characterized in that: a reinforcing rod is welded near the first flange plate of the front end truss, and the two ends of the reinforcing rod are respectively connected to two The first chord; reinforcement rods are welded near the second and third flange plates of the extended truss, and the two ends of the reinforcement rods are respectively connected to two second chords; the fourth flange plate of the tail end truss is welded with reinforcement rods , the two ends of the reinforcing rod are respectively connected with two third chord rods. 8. The multi-segment truss beam of dish concentrator grid according to claim 3 or 5, characterized in that: the first chord is provided with a tapered transition section, and the cones of the two first chords A reinforcing rod is welded near the transition section; the second chord is provided with a tapered transition section, and a reinforcing rod is welded near the tapered transition section of the two second chords; the third chord is provided with a tapered In the transition section, reinforcing rods are welded near the tapered transition sections of the two third chords. 9. The multi-segment truss beam of dish concentrator grid according to claim 5, characterized in that: the first chord, the second chord, the third chord, the front end truss, and the extended truss There are process holes for internal anti-corrosion treatment on the webs of the trusses at the end and the tail end, and plugs are provided at the process holes.