Heliostat stand column for tower-type photo-thermal power generation

Abstract

The utility model discloses a heliostat stand column for tower type photo-thermal power generation, and relates to the technical field of tower type solar photo-thermal power generation. Comprising a stand column body, the stand column body comprises a straight pipe part and an anti-torsion part, the straight pipe part and the anti-torsion part are of an integrated connecting structure, the anti-torsion part is arranged at the first end of the straight pipe part and embedded into filling slurry on the ground, and the stand column body and the hardened filling slurry can form a fixed connecting structure. A plurality of anti-torsion protrusions can be formed on the side wall of the outer circumference of the anti-torsion part through a machining means, the extending direction of the anti-torsion protrusions is parallel to the axis of the anti-torsion part, and the anti-torsion protrusions can be used for improving the bearing capacity and stability of the stand column body. According to the utility model, the working difficulty of installation of the heliostat upright post can be effectively reduced, the installation efficiency is high, and meanwhile, the installed heliostat upright post has stronger bearing capacity and stability.

Description

Technical Field

[0001] The utility model relates to the technical field of tower - type solar thermal power generation, in particular to a heliostat column for tower - type solar thermal power generation. Background Technique

[0002] As a clean and renewable energy source, solar energy is increasingly valued by people. Solar thermal power generation technology is another emerging solar power generation technology after photovoltaic power generation. Tower - type solar thermal power generation technology is an effective way for large - scale thermal utilization of solar energy and has received wide attention due to its advantages such as energy storage and peak shaving.

[0003] In a tower - type solar thermal power generation system, a heliostat reflects sunlight onto a receiver through a reflector, heats the heat - absorbing medium in the receiver, and then exchanges heat through a heat - exchange medium to drive a steam turbine to generate electricity. Heliostats account for the main part of the investment in tower - type solar thermal power generation projects and occupy most of the site in a power station. As the main supporting component at the lower part of the heliostat, whether the heliostat column can be firmly fixed to the ground has a great impact on ensuring the stable operation of the entire heliostat.

[0004] In the prior art, for the steel - pipe column used in heliostats, one installation method is to first bury a concrete pipe pile underground and then connect the steel - pipe column to the concrete pipe pile through a flange, which greatly increases the working difficulty; another installation method is to directly bury the steel - pipe column underground, but the anti - torsional ability of this column is very poor and it can only be used in some small - sized heliostats; there is also an installation method of adding ribs at the lower part of the steel - pipe column to increase the anti - torsional ability of the column, but this method has a large workload and requires a high strength for the rib plates. Content of the Utility Model

[0005] The purpose of the utility model is to provide a heliostat column for tower - type solar thermal power generation to solve the problems raised in the above - mentioned background technique.

[0006] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A heliostat column for tower - type solar thermal power generation, including a column body. Among them, the column body includes a straight - pipe part and an anti - torsional part. The straight - pipe part and the anti - torsional part are of an integral connection structure. The anti - torsional part is arranged at the first end of the straight - pipe part. The anti - torsional part is embedded in the filling slurry on the ground, and the column body can form a fixed connection structure with the hardened filling slurry; several anti - torsional protrusions can be formed on the outer circumferential side wall of the anti - torsional part through mechanical processing means. The extending direction of the anti - torsional protrusions is parallel to the axis of the anti - torsional part, and the anti - torsional protrusions can be used to improve the bearing capacity and stability of the column body; more preferably, the filling slurry is concrete.

[0007] Based on the above technical features, the heliostat column of the present utility model does not require pre-buried concrete pipe piles. Therefore, the construction cost is low, the work difficulty is greatly reduced, and the installation efficiency is high. The bottom of the column body of the present utility model adopts an anti-torsion part that can effectively resist torsion force, preventing the column body from rotating under the action of external force. At the same time, the concrete filling slurry in which the column body is buried in the soil also greatly enhances the bearing capacity and stability of the column body.

[0008] Preferably in this technical solution, the heliostat column further includes a connection mechanism, and the horizontal rotation mechanism can be installed on the column body through the connection mechanism. The connection mechanism is coaxially and fixedly connected to the outer circumferential side wall of the straight pipe part. The horizontal rotation mechanism is butted against the upper surface of the connection mechanism. At the same time, the flatness tolerance of the upper surface of the connection mechanism needs to be controlled. More preferably, the flatness tolerance of the upper surface of the connection mechanism butt-connected to the horizontal rotation mechanism should be controlled between 0 mm and 1.5 mm.

[0009] Based on the above technical features, since the flatness of the upper surface of the connection mechanism connected to the horizontal rotation mechanism has a great influence on the rotation angle and the push rod stroke during the operation of the heliostat, therefore, the present utility model controls the flatness of the connection mechanism, which also greatly improves the applicability of the heliostat column of the present utility model.

[0010] Preferably in this technical solution, the connection mechanism is a connection flange. The connection mechanism includes a flange body and bolt holes uniformly opened on the flange body. The connection mechanism and the horizontal rotation mechanism can be fixedly connected through bolts passing through the bolt holes.

[0011] Based on the above technical features, the connection mechanism and the horizontal rotation mechanism are connected by bolts, which greatly improves the installation efficiency on the premise of ensuring the connection strength.

[0012] Preferably in this technical solution, the connection mechanism further includes a positioning groove opened on the upper surface of the flange body. The positioning groove corresponds to the limiting hole in the horizontal rotation mechanism. The setting of the positioning groove can be used for the quick installation of the horizontal rotation mechanism.

[0013] Based on the above technical features, the positioning groove corresponds to the limiting hole in the horizontal rotation mechanism, which can ensure that the bolt holes of the connection mechanism and the bolt holes of the horizontal rotation mechanism are on the same axis line position, facilitating positioning and realizing quick installation.

[0014] Preferably in this technical solution, the flange body is coaxially sleeved on the second end of the straight pipe part, and moreover, the inner side of the flange body is welded to the outer circumferential side wall of the straight pipe part. More preferably, a plurality of rib plates are welded between the lower surface of the flange body and the outer circumferential side wall of the straight pipe part, and the rib plates are used to strengthen the connection strength between the connection flange and the straight pipe part.

[0015] Preferably, in this technical solution, several of the anti-torsion protrusions are formed in a circumferential array on the outer circumferential side wall of the anti-torsion portion, an anti-torsion arc surface is formed between two adjacent anti-torsion protrusions, and the top of the anti-torsion protrusion is higher than the anti-torsion arc surface.

[0016] Preferably, in this technical solution, the length of the main body of the anti-torsion portion in the axial direction is 1 / 3 to 1 / 2 of the column body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a heliostat column in an embodiment of the present invention;

[0018] Figure 2 In an embodiment of the present invention Figure 1 is a top view schematic diagram of the heliostat column;

[0019] Figure 3 In an embodiment of the present invention Figure 1 is a cross-sectional schematic diagram of the heliostat column at the A-A position.

[0020] In the figure: 1, connecting mechanism; 2, straight pipe portion; 3, anti-torsion portion; 4, anti-torsion arc surface; 5, anti-torsion protrusion; 6, flange main body; 7, bolt hole; 8, positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] In addition, it should be understood that, for the convenience of description, the dimensions of the various components shown in the drawings are not drawn in actual proportional relationships.

[0024] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of subsequent drawings.

[0025] Before understanding the present utility model, it should be clear that tower-type solar thermal power generation uses a large number of heliostats (directional reflectors) to concentrate sunlight onto a heat absorber (central heat exchanger) installed on the top of a tower. Among them, the heliostat has the function of concentrating light and collecting heat. Tower-type solar thermal power generation drives a large number of heliostats to track sunlight, so that sunlight is concentrated on the surface of the heat absorber, converting light energy into heat energy, and then converting heat energy into electrical energy to achieve solar thermal power generation.

[0026] As Figures 1 to 3 shown, the present utility model provides a technical solution: a heliostat column for tower-type solar thermal power generation, and the heliostat column includes a column body and a connecting mechanism 1.

[0027] As Figure 1 shown, the column body includes a straight pipe portion 2 and an anti-torsion portion 3. The straight pipe portion 2 and the anti-torsion portion 3 are of an integral connection structure. The anti-torsion portion 3 is arranged at the first end of the straight pipe portion 2, and the anti-torsion portion 3 is embedded in the filling slurry on the ground. The column body can form a fixed connection structure with the hardened filling slurry. The anti-torsion portion 3 can form a plurality of anti-torsion protrusions 5 on its outer circumferential side wall by mechanical processing means. The extending direction of the anti-torsion protrusions 5 is parallel to the axis of the anti-torsion portion 3, and the anti-torsion protrusions 5 can be used to improve the bearing capacity and stability of the column body.

[0028] Specifically, in the embodiment of the present utility model, the straight pipe portion 2 and the anti-torsion portion 3 are the same steel pipe. The anti-torsion portion 3 is located at the lower part of the straight pipe portion 2. During use, the anti-torsion portion 3 is completely buried underground and is poured with concrete around it. The anti-torsion portion 3 can also effectively prevent the column body from rotating under external loads by firmly combining with the concrete. A certain depth of sand is filled on the upper layer and tamped; at the same time, the straight pipe portion 2 and the anti-torsion portion 3 are the same steel pipe, and the anti-torsion portion 3 is formed by mechanical means of die extrusion. This die extrusion method is simple and fast, and the formed structure has high strength.

[0029] Furthermore, as Figure 3As shown, a plurality of anti-torsion protrusions 5 are formed in a circumferential array on the outer circumferential side wall of the anti-torsion portion 3. An anti-torsion arc surface 4 is formed between two adjacent anti-torsion protrusions 5. The top of the anti-torsion protrusion 5 is higher than the anti-torsion arc surface 4, increasing the resistance during the rotation of the heliostat column and improving the anti-torsion ability. In the embodiment of the present invention, four anti-torsion protrusions 5 are provided on the outer circumferential side wall of the anti-torsion portion 3, and the end of the anti-torsion protrusion 5 is in a convex arc shape. In other embodiments, the number of anti-torsion protrusions 5 can be set to be more. At the same time, the end of the anti-torsion protrusion 5 can also be in a horizontal shape, etc.

[0030] Furthermore, the length of the main body of the anti-torsion portion 3 in the axial direction is 1 / 3 to 1 / 2 of the column body, and this design can fix the heliostat well.

[0031] As Figures 1 to 2 shown, the connecting mechanism 1 is coaxially and fixedly connected to the outer circumferential side wall of the straight pipe portion 2, and the horizontal rotation mechanism is butted against the upper surface of the connecting mechanism 1. The horizontal rotation mechanism can be installed on the column body through the connecting mechanism 1. At the same time, the flatness tolerance of the upper surface of the connecting mechanism 1 needs to be controlled. In the embodiment of the present invention, the flatness tolerance of the upper surface of the connecting mechanism 1 butted against the horizontal rotation mechanism should be controlled between 0 mm and 1.5 mm. Because the flatness of the upper surface of the connecting mechanism 1 connected to the horizontal rotation mechanism has a great influence on the rotation angle and the push rod stroke during the operation of the heliostat, therefore, the present invention controls the flatness of the connecting mechanism 1, which also greatly improves the applicability of the heliostat column of the present invention.

[0032] Specifically, in the embodiment of the present invention, the connecting mechanism 1 is a connecting flange. The connecting mechanism 1 includes a flange body 6 and bolt holes 7 uniformly opened on the flange body 6. The connecting mechanism 1 and the horizontal rotation mechanism can be fixedly connected by bolts passing through the bolt holes 7. In the embodiment of the present invention, the bolt holes 7 are uniformly distributed in the circumferential direction on the flange body 6, and the number of the bolt holes 7 is seven. The flange body 6 is locked and connected to the horizontal rotation mechanism by bolts and self-locking gaskets. The specific number of the bolt holes 7 can be determined according to the diameter of the heliostat column. Therefore, in other embodiments, the number of the bolt holes 7 can also be set to other numbers.

[0033] Further, in the embodiment of the present utility model, a positioning groove 8 is further provided on the upper surface of the flange body 6. The positioning groove 8 corresponds to the limiting hole in the horizontal rotation mechanism. At the same time, when the positioning groove 8 corresponds to the limiting hole in the horizontal rotation mechanism, the bolt hole 7 of the connecting mechanism and the bolt hole of the horizontal rotation mechanism will be on the same axis line position. Therefore, the setting of the positioning groove 8 can realize the rapid positioning of the flange body 6 and the horizontal rotation mechanism and facilitate rapid installation. Specifically, the groove depth of the positioning groove 8 is about 1 / 4 - 1 / 2 of the flange thickness. Preferably, in the embodiment of the present utility model, the positioning groove 8 is located at the edge of the flange body, and the groove depth of the positioning groove 8 is about 1 / 3 of the flange thickness.

[0034] Still further, the flange body 6 is coaxially sleeved on the second end of the straight pipe portion 2. And the inner side of the flange body 6 is welded to the outer circumferential side wall of the straight pipe portion 2. At the same time, several rib plates are welded between the lower surface of the flange body 6 and the outer circumferential side wall of the straight pipe portion 2. The rib plates are used to further strengthen the connection strength between the flange and the straight pipe portion 2. Preferably, as Figure 1 shown, in the embodiment of the present utility model, the upper surface of the flange body 6 is lower than the end face of the second end of the straight pipe portion 2 to ensure the connection strength between the flange body 6 and the straight pipe portion 2. Of course, in other embodiments, the upper surface of the flange body 6 may also be higher than the end face of the second end of the straight pipe portion 2, or the upper surface of the flange body 6 is flush with the end face of the second end of the straight pipe portion.

[0035] The heliostat column in the present utility model adopts a precast steel pipe pile, which is light in weight and easy to transport. The column body includes a straight pipe portion 2 and an anti-torsion portion 3. Among them, the bottom of the column body adopts an anti-torsion portion 2 that can effectively resist the torsional force. The anti-torsion portion 2 and the straight pipe portion 3 are made of the same steel pipe. Therefore, during construction, only the anti-torsion portion 3 needs to be buried underground and concrete is poured around it. The construction speed is fast, and it has high bearing capacity and stability. The anti-torsion portion 3 is formed by a mechanical method of die extrusion, and the production of the heliostat column is simple. Its connecting flange is fixedly connected to the column body to ensure that the flatness tolerance of the upper flange surface of the connecting flange is less than 1.5 mm, which greatly improves the applicability of the heliostat column of the present utility model.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A heliostat column for tower-type solar thermal power generation, characterized in that, It includes a column body, wherein: The column body includes a straight pipe portion (2) and an anti-torsion portion (3). The straight pipe portion (2) and the anti-torsion portion (3) are of an integral connection structure. The anti-torsion portion (3) is arranged at the first end of the straight pipe portion (2). The anti-torsion portion (3) is embedded in the filling slurry on the ground, and the column body can form a fixed connection structure with the hardened filling slurry; Several anti-torsion protrusions (5) can be formed on the outer circumferential side wall of the anti-torsion portion (3) by mechanical processing means. The extending direction of the anti-torsion protrusions (5) is parallel to the axis of the anti-torsion portion (3), and the anti-torsion protrusions (5) can be used to improve the bearing capacity and stability of the column body.

2. The heliostat column according to claim 1, characterized in that, It further includes a connection mechanism (1), and the horizontal rotation mechanism can be installed on the column body through the connection mechanism (1); The connection mechanism (1) is coaxially and fixedly connected to the outer circumferential side wall of the straight pipe portion (2). The horizontal rotation mechanism is docked with the upper surface of the connection mechanism (1). At the same time, the flatness tolerance of the upper surface of the connection mechanism (1) needs to be controlled.

3. The heliostat column according to claim 2, wherein, The flatness tolerance of the upper surface of the connection mechanism (1) docked with the horizontal rotation mechanism should be controlled between 0 mm and 1.5 mm.

4. The heliostat column according to claim 3, wherein The connection mechanism (1) is a connection flange. The connection mechanism (1) includes a flange body (6) and bolt holes (7) evenly opened on the flange body (6). The connection mechanism (1) and the horizontal rotation mechanism can be fixedly connected by bolts passing through the bolt holes (7).

5. The heliostat column according to claim 4, characterized in that, The connection mechanism (1) further includes a positioning groove (8) opened on the upper surface of the flange body (6). The positioning groove (8) corresponds to the limit hole in the horizontal rotation mechanism, and the setting of the positioning groove (8) can be used for the rapid installation of the horizontal rotation mechanism.

6. The heliostat column according to claim 4, wherein The flange body (6) is coaxially sleeved on the second end of the straight pipe portion (2), and the inner side of the flange body (6) is welded to the outer circumferential side wall of the straight pipe portion (2).

7. The heliostat column according to claim 6, characterized in that, Several rib plates are welded between the lower surface of the flange body (6) and the outer circumferential side wall of the straight pipe portion (2), and the rib plates are used to strengthen the connection strength between the connection flange and the straight pipe portion (2).

8. The heliostat column according to claim 1, characterized in that, Several anti-torsion protrusions (5) are formed in a circumferential array on the outer circumferential side wall of the anti-torsion portion (3). An anti-torsion arc surface (4) is formed between adjacent two anti-torsion protrusions (5), and the top of the anti-torsion protrusion (5) is higher than the anti-torsion arc surface (4).

9. The heliostat column according to claim 1, wherein The filling slurry is concrete.

10. The heliostat column according to claim 1, characterized in that, The axial length of the main body of the anti-torsion portion (3) is 1 / 3 to 1 / 2 of the column body.

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