Bridge structure suitable for offshore photovoltaic cable laying

Abstract

The utility model discloses a bridge structure suitable for offshore photovoltaic cable laying, which belongs to the technical field of offshore photovoltaic power generation and is characterized in that a plurality of groups of bridge structures are arranged downwards from an offshore photovoltaic platform, and each group of bridge structures comprises two vertical rods and a plurality of unpowered rollers connected with the vertical rods; the vertical rod is fixedly connected with a secondary purline on the offshore photovoltaic platform; the unpowered roller is horizontally arranged between the two vertical rods and supports a plurality of strands of cables; the bridge structures are arranged at preset intervals, and the bottoms of the vertical rods of the bridge structures are fixedly connected through longitudinal connecting beams. According to the utility model, the bearing requirement of cable laying can be met, field cable dragging and laying can be facilitated, the damage to the purline in the laying construction process is reduced, the construction period can be effectively shortened, and the project quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore photovoltaic power generation technical field especially a bridge structure suitable for offshore photovoltaic cable laying. BACKGROUND

[0002] With the urgent demand of global renewable energy and the gradual implementation of offshore wind and light policy, photovoltaic industry is developing rapidly from land area to shallow sea and even deep sea area. As the power transmission system throughout the power plant, the cable is distributed in every corner of the photovoltaic field. Combined with the construction process, the cable laying work needs to be carried out after the installation of the power grid platform, and then the related offshore operation is carried out, so the laying construction is difficult, the safety risk is high, and the cable dragging process causes damage to the civil structure. Therefore, a cable bridge structure system is needed to adapt to the demand of offshore photovoltaic cable laying. SUMMARY

[0003] The utility model needs to solve the technical problem to provide a bridge structure suitable for offshore photovoltaic cable laying, which can not only meet the bearing requirement of cable laying, but also facilitate the on-site cable dragging and laying, reduce the damage to the purline in the laying construction process, effectively shorten the construction period and ensure the engineering quality.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A bridge structure suitable for offshore photovoltaic cable laying is arranged downward from the offshore photovoltaic platform, each group of bridge structures includes two vertical rods and a plurality of unpowered rollers connecting the vertical rods.

[0006] The vertical rod is fixedly connected with the secondary purline on the offshore photovoltaic platform.

[0007] The unpowered roller is horizontally arranged between the two vertical rods and supports a plurality of cables.

[0008] The distance between each group of bridge structures is pre-set, and the bottom of the vertical rod of each group of bridge structures is fixedly connected through a longitudinal connecting beam.

[0009] The further improvement of the utility model technical scheme is that the top end of the vertical rod is welded with an angle steel connecting piece, and the connecting bolt and the secondary purline are fixedly connected.

[0010] The further improvement of the utility model technical scheme is that the two sides of the unpowered roller are fixedly connected with the vertical rod through anti-falling nuts.

[0011] The further improvement of the utility model technical scheme is that the longitudinal connecting beam is fixedly connected with the vertical rod through connecting bolts.

[0012] The further improvement of the utility model technical scheme lies in that: the inclined struts are arranged between the vertical rods of the adjacent bridge structure, and the two ends of the inclined struts are fixedly connected with the vertical rods by bolts.

[0013] The further improvement of the utility model technical scheme lies in that: the offshore photovoltaic platform comprises a front steel pipe pile, a rear steel pipe pile, a net rack, main purlins, secondary purlins and photovoltaic modules.

[0014] The net rack is arranged on the front steel pipe pile and the rear steel pipe pile and comprises a top chord, a bottom chord and inclined web members; the inclined web members are arranged between the top chord and the bottom chord in an inclined manner.

[0015] A plurality of main purlins parallel to the top chord are arranged on the top chord, a plurality of secondary purlins perpendicular to the main purlins are arranged on the main purlins, and a plurality of photovoltaic modules are fixed on the secondary purlins; the photovoltaic modules are connected with cables.

[0016] Thanks to the above technical scheme, the utility model has the following technical progress:

[0017] 1. The utility model adopts the bracket of the unpowered roller, which is different from the traditional fixed cable bracket, and can reduce the friction between the cable and the bracket during the cable dragging process, thereby greatly increasing the convenience of construction.

[0018] 2. The longitudinal reinforcing connection structure is arranged at the bottom of the hanger column, the longitudinal contact beam is arranged in the whole length, all the hangers are connected into a whole, the longitudinal structural rigidity is increased, the local hanger column load is large or the longitudinal displacement is large during the dragging process, the traditional cable bridge structure is a single-row self-contained structure system, the longitudinal direction can swing freely, the cable and the bridge structure move simultaneously during the offshore cable laying construction, and it is extremely difficult to complete the cable movement displacement.

[0019] 3. In the utility model, the longitudinal hangers are arranged at intervals, and the inclined supports are arranged on the adjacent hanger column supports, so that the longitudinal rigidity is further increased.

[0020] 4. The utility model adopts a bridge structure system suitable for offshore photovoltaic cable laying, and a bridge structure system suitable for offshore cable laying is designed, which has the beneficial effects of convenient construction, stable structure, time saving and the like. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole schematic view of a bridge structure system suitable for offshore photovoltaic cable laying.

[0022] Figure 2 It is a bridge structure system suitable for offshore photovoltaic cable laying.

[0023] Figure 3 is a bridge structure vertical surface drawing suitable for offshore photovoltaic cable laying of the utility model;

[0024] 1, cable bridge, 101, stand, 102, unpowered roller, 103, angle steel connecting piece, 104, connecting bolt, 105, anti-drop nut, 106, longitudinal contact beam, 107, inclined brace, 108, cable;

[0025] 2, photovoltaic module;

[0026] 3, net rack, 301, upper chord, 302, lower chord, 303, inclined web member;

[0027] 4, main purlin; 5, secondary purlin; 6, front steel pipe pile; 7, rear steel pipe pile. DETAILED DESCRIPTION

[0028] The utility model will be made further detailed description in combination with the drawings and examples:

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element indicated must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation of the utility model.

[0030] In addition, the terms "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0031] As shown in Figure 1 The offshore photovoltaic platform includes front steel pipe pile 6, rear steel pipe pile 7, net rack 3, main purlin 4, secondary purlin 5 and photovoltaic module 2;

[0032] The height of the front steel pipe pile 6 is less than the height of the rear steel pipe pile 7;

[0033] The net rack 3 is erected on the front steel pipe pile 6 and the rear steel pipe pile 7, and includes upper chord 301, lower chord 302 and inclined web member; the inclined web member is inclinedly arranged between the upper chord 301 and the lower chord 302;

[0034] A plurality of main purlins 4 parallel to the upper chord 301 are arranged on the upper chord 301, a plurality of secondary purlins 5 perpendicular to the main purlins 4 are arranged on the main purlins 4, and a plurality of photovoltaic modules 2 are fixed on the secondary purlins 5;

[0035] As shown in Figure 2 , 3 A bridge 1 structure suitable for offshore photovoltaic cable 108 laying is arranged downward from an offshore photovoltaic platform in several groups, each group of bridge 1 structure includes two vertical poles 101 and a plurality of unpowered rollers 102 connecting the vertical poles 101;

[0036] The vertical pole 101 is fixedly connected with the secondary purlin 5 on the offshore photovoltaic platform, that is, the top end of the vertical pole 101 is welded with an angle steel connecting piece 103, and the vertical pole 101 is fixedly connected with the secondary purlin 5 through connecting bolts 104;

[0037] The unpowered roller 102 is horizontally arranged between the two vertical poles 101, and the unpowered roller 102 is fixedly connected with the vertical poles 101 on both sides through anti-coming-off nuts 105, so as to avoid the falling of the roller during the laying process and service of the cable 108;

[0038] The vertical poles 101 of each group of bridge 1 structure are fixedly connected through longitudinal connecting beams 106 at the bottom, and the longitudinal connecting beams 106 are fixedly connected with the vertical poles 101 through connecting bolts 104 respectively;

[0039] The vertical poles 101 of adjacent bridge 1 structures are provided with diagonal braces 107, and the two ends of the diagonal brace 107 are fixedly connected with the vertical poles 101 by bolts.

[0040] Working principle:

[0041] The bridge 1 structure includes a bridge 1 structure system: two vertical poles 101 vertically, the top of which is connected with the secondary purlin 5 through connecting bolts 104, and the lower part is provided with a plurality of cable cradles of unpowered rollers 102 according to the laying requirements of the cable 108; anti-coming-off nuts 105 are arranged on both sides of the unpowered roller 102 to avoid the falling of the roller during the laying process and service of the cable; the cable 108 can be directly laid on the roller; a longitudinal connecting beam 106 is arranged at the bottom of the vertical pole 101 at a certain distance (S1) apart, in order to connect the vertical poles 101 longitudinally into a whole, and the connecting beam and the vertical pole 101 are connected by bolts; in order to increase the structural rigidity along the direction of the cable 108, avoid excessive stress and large displacement of the local vertical pole 101 during the dragging process of the cable 108, diagonal braces 107 are arranged between the vertical poles 101, and the two ends of the diagonal brace 107 are connected with the vertical poles 101 by bolts; the above bridge 1 structure system can not only ensure the stability of the structure, but also facilitate the on-site installation and construction, and the bolt connection can avoid offshore welding operation.

[0042] In summary, the utility model can satisfy the bearing requirement of cable laying, facilitate on-site cable dragging laying, reduce the damage of the purlin in the laying construction process, effectively shorten the construction period and ensure the engineering quality.

Claims

1. A bridge structure suitable for offshore photovoltaic cable laying, characterized in that: Each group of bridge frames (1) is arranged on the offshore photovoltaic platform, and each group of bridge frames (1) comprises two vertical rods (101) and a plurality of unpowered rollers (102) connecting the vertical rods (101); The vertical rods (101) are fixedly connected with secondary purlins (5) on the offshore photovoltaic platform. The unpowered rollers (102) are horizontally arranged between the two vertical rods (101) and support a plurality of cables (108). The vertical rods (101) at the bottom of each group of bridge frames (1) are fixedly connected through longitudinal connecting beams (106) at a preset distance.

2. A bridge structure suitable for offshore photovoltaic cable laying according to claim 1, characterized in that: The top end of the vertical rod (101) is welded with an angle steel connecting piece (103), and the angle steel connecting piece (103) is fixedly connected with the secondary purlin (5) through connecting bolts (104).

3. The bridge structure suitable for offshore photovoltaic cable laying according to claim 1, characterized in that: The unpowered rollers (102) are fixedly connected with the vertical rods (101) through anti-loosening nuts (105) on both sides.

4. The bridge structure suitable for offshore photovoltaic cable laying according to claim 1, characterized in that: The longitudinal connecting beams (106) are fixedly connected with the vertical rods (101) through connecting bolts (104).

5. The bridge structure suitable for offshore photovoltaic cable laying according to claim 1, characterized in that: An inclined brace (107) is arranged between the vertical rods (101) of adjacent bridge frames (1), and both ends of the inclined brace (107) are fixedly connected with the vertical rods (101) through bolts.

6. The bridge structure suitable for offshore photovoltaic cable laying according to claim 1, characterized in that: The offshore photovoltaic platform comprises front steel pipe piles (6), rear steel pipe piles (7), a net rack (3), main purlins (4), secondary purlins (5) and photovoltaic modules (2). The net rack (3) is arranged on the front steel pipe piles (6) and the rear steel pipe piles (7) and comprises a top chord (301), a bottom chord (302) and inclined web members (303). The inclined web members are obliquely arranged between the top chord (301) and the bottom chord (302). A plurality of main purlins (4) parallel to the top chord (301) are arranged on the top chord (301), a plurality of secondary purlins (5) perpendicular to the main purlins (4) are arranged on the main purlins (4), and a plurality of photovoltaic modules (2) are fixedly arranged on the secondary purlins (5). The photovoltaic modules (2) are connected with the cables (108).

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