Flexible support cable tension control device and photovoltaic power generation device

Abstract

A flexible support cable tension control device comprises a tension regulator, a limiting stopper and a control device and is fixedly arranged on a stand column of a photovoltaic support, and a flexible cable extending in the first direction bypasses the tension regulator and extends in the second direction defined by the tension regulator and the limiting stopper. The tension adjuster comprises a supporting body and an adjusting push rod capable of pushing the supporting body, and the supporting body abuts against the flexible cable; the control device comprises a load sensor and a controller, the load sensor detects the load of the flexible cable, and the controller is in signal connection with the load sensor and the adjusting push rod so as to control the adjusting push rod to push the supporting body to move according to the load of the flexible cable. According to the flexible support cable tension control device, the tension on the flexible cable can be automatically adjusted according to the load, and the reliability of the flexible support is improved. The utility model also provides a photovoltaic power generation device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic support field, concretely relates to a flexible support cable tension control device and photovoltaic power generation device. BACKGROUND

[0002] With the development of photovoltaic industry, photovoltaic power station is more and more deployed in mountain, hilly and other scenes with significant height difference. In these scenes, rigid photovoltaic support deployment is difficult, and the erection cost is high, which is not conducive to the optimization of the economy of photovoltaic power station. Therefore, the photovoltaic flexible support with flexible cable as the supporting structure has obtained more extensive application. With the environmental complexity of the deployment site, the span requirement of the photovoltaic flexible support is also continuously improved, and under the influence of the large wind load, the deflection of the photovoltaic flexible support becomes an important factor limiting the deployment of the photovoltaic support with large span.

[0003] Patent CN207603537U discloses a kind of photovoltaic flexible support, flexible steel wire rope is fixed to column by pressing plate, by adjusting the locking nut on pressing plate, flexible steel wire rope is tightened, to reach the effect of adjusting the tension of flexible steel wire rope. However, the tension on the steel wire rope needs to be adjusted manually, which is very labor-intensive when adjustment is needed, and the tension on the flexible cable of the photovoltaic flexible support cannot be adjusted in time under adverse weather conditions such as strong wind, which can easily cause damage to the photovoltaic module.

[0004] Therefore, it is of positive significance to provide a flexible support control device that can automatically adjust the tension for improving the reliability and service life of the photovoltaic flexible support. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a flexible support cable tension control device that automatically adjusts the tension of the flexible cable of the photovoltaic flexible support. The utility model also provides a photovoltaic power generation device.

[0006] According to an embodiment of the utility model in one aspect, a flexible support cable tension control device is provided, which comprises a tension adjuster, a position limiter and a control device.

[0007] The flexible support cable tension control device is fixedly arranged on the photovoltaic support column, the flexible cable extends in a first direction between adjacent photovoltaic support columns, the position limiter and the tension adjuster define a second direction, the flexible cable passes around the tension adjuster and is limited by the position limiter, so that the flexible cable extends in the second direction between the tension adjuster and the position limiter;

[0008] The tension regulator comprises a support body and an adjusting push rod, the support body abuts against the flexible cable, the adjusting push rod is connected to the support body, the adjusting push rod is capable of axial expansion and contraction to push the support body to move, and the adjusting push rod is provided with one or more;

[0009] The control device comprises a load sensor and a controller, the controller is connected to the load sensor and the adjusting push rod signal, the load sensor detects the load of the flexible cable, and the controller controls the axial movement of the adjusting push rod according to the load sensor signal.

[0010] The device can automatically adjust the control push rod to push the support body to the appropriate position according to the tension on the flexible cable, so as to tension or relax the flexible cable, match the tension on the flexible cable with the load, improve the stability of the flexible support, and avoid collision or damage of the photovoltaic module on the flexible cable.

[0011] Further, in some embodiments, the tension controller further comprises a limiting groove, the support body is at least partially arranged in the limiting groove, and the limiting groove limits the flexible cable in the plane where the first direction and the second direction are located.

[0012] The limiting groove can prevent the flexible cable from falling off the tension regulator.

[0013] Further, in some embodiments, the support body is provided with an arc-shaped outer edge, and the arc-shaped outer edge abuts against the flexible cable.

[0014] The arc-shaped outer edge can avoid excessive stress concentration of the flexible cable when turning, and prevent wear.

[0015] Further, in some embodiments, the support body is configured as an elastic ring.

[0016] The elastic ring can expand or contract with the expansion and contraction of the adjusting push rod, the tension on the cable can be changed by adjusting the turning radius of the flexible cable, the adjustment is simple, and the stress concentration of the flexible cable can be prevented.

[0017] Further, in some embodiments, the adjusting push rod is configured as a plurality of adjusting push rods, and the adjusting push rods are uniformly arranged in the circumferential direction from the center of the elastic ring to the outer edge.

[0018] Further, in some embodiments, the adjusting push rod is configured as a hydraulic push rod.

[0019] The hydraulic push rod has high adjustment accuracy, provides large pushing force, and can accurately realize tension adjustment in a large range.

[0020] Further, in some embodiments, the tension regulator is configured as a disc shape.

[0021] Further, in some embodiments, the load sensor is disposed inside the flexible inner part.

[0022] The load sensor disposed inside the flexible cable can effectively measure the load on the flexible cable in real time, and improve the response speed of the tension control device.

[0023] According to an embodiment of the other aspect of the utility model, a photovoltaic power generation device is provided. The device includes a column, a flexible cable and a photovoltaic module, the flexible cable is arranged between adjacent columns, and the photovoltaic module is fixed on the flexible cable. Wherein, the tension control device is arranged between the flexible cable and the column, and the tension control device adopts the flexible support cable tension control device provided in any of the preceding embodiments.

[0024] Further, in some embodiments, the tension control device is powered by the photovoltaic power generation device.

[0025] The photovoltaic power generation device can effectively reduce the dependence on external support equipment, and can be arranged in more diversified environmental scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Fig. 1 is a structural schematic diagram of a photovoltaic power generation device in an embodiment;

[0027] Figure 2 Fig. 2 is a structural schematic diagram of a tension control device in an embodiment;

[0028] Figure 3 Fig. 3 is a schematic diagram of the installation position of a support body and an adjusting push rod in an embodiment;

[0029] Figure 4 Fig. 4 is a schematic diagram of the connection relationship between a hydraulic push rod, a controller and a load sensor in an embodiment.

[0030] Meaning of reference signs:

[0031] 1-steel beam;

[0032] 2-flexible cable;

[0033] 3-column;

[0034] 4-limiting device;

[0035] 5-U-shaped hoop;

[0036] 6-tension adjuster;

[0037] 7-limiting groove;

[0038] 8-adjusting push rod;

[0039] 9-rubber ring;

[0040] 10 - oil baffle

[0041] 11 - oil pressure controller

[0042] 12 - oil reservoir

[0043] 13 - hydraulic push rod oil reservoir

[0044] 14 - controller

[0045] 15 - load sensor

[0046] The purpose of the above-mentioned drawings is to make a detailed description of the present application, so that those skilled in the art can understand the technical concept of the present application, and is not intended to limit the present application. In order to express simply, the above-mentioned drawings only schematically draw the structure related to the technical features of the present application, and do not draw the complete structure and all details strictly according to the actual proportion. DETAILED DESCRIPTION

[0047] The present application will be further described in detail below by specific examples combined with the drawings.

[0048] Reference to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment herein. The phrase appears at various places in the specification is not necessarily referring to the same embodiment, nor is it limited to mutually exclusive or alternative embodiments. Those skilled in the art should understand that the embodiments herein can be combined with other embodiments without structural conflict.

[0049] In the description herein, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection" and the like should be understood broadly, for example, it can be movable connection, or fixed connection or integral. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] In the description herein, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "transverse", "longitudinal", "height", "length", "width" and the like are intended to accurately describe the embodiments and simplify the description, and are not intended to limit the parts or structures involved to have a specific orientation, to be installed or operated in a specific orientation, and cannot be understood as a limitation on the embodiments herein.

[0051] In the description herein, the terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating relative importance or limiting the number, specific order or primary and secondary relationship of the described technical features. In the description herein, the meaning of "multiple" is at least two.

[0052] With the rapid development of flexible support, the problem of land utilization is definitely the primary problem of the later development road. With the restriction of site conditions in different scenes, the span requirement of the flexible support is also increasing. When the flexible support is under the action of large wind load, the overall stability of the flexible support and the deflection requirement of the component cable and the bearing cable are the main factors limiting the realization of super span of the flexible support. In the case of large wind, the flexible cable needs to be tensioned to reduce the deflection deformation and amplitude of the flexible cable, so as to reduce the risk of damage of the photovoltaic module. The existing photovoltaic support can only adjust the tension on the flexible cable through the adjusting mechanism such as adjusting bolt in an artificial way, which is low in efficiency and large in workload, and is difficult to adapt to the adjustment requirement of the flexible support.

[0053] In order to solve the above problems, an embodiment of one aspect of the present application provides a flexible support cable tension control device. The photovoltaic power generation device provided with the flexible support cable tension control device is shown in Figure 1 . A plurality of columns 3 are arranged with flexible cables 2, the end of the flexible cable 2 is fixedly connected to the ground, and the photovoltaic module 16 is fixedly connected to the flexible cable 2. The flexible support cable tension control device is arranged on the column 3, and in combination with Figure 2 , the flexible support cable tension control device comprises a tension adjuster 6 and a stopper 4, the stopper 4 is fixedly connected to the tension adjuster 6 through a U-shaped hoop 5, and the tension adjuster 6 is welded and fixed to the column 3. The flexible cable 2 extends in a first direction between two adjacent columns 3, the stopper 4 and the tension adjuster 6 jointly define a second direction, and the flexible cable 2 extends from the tension adjuster 6 to the stopper 4 along the second direction after passing around the tension adjuster 6.

[0054] The tension adjuster 6 comprises a support body and an adjusting push rod. In the preferred embodiment, as shown in Figure 3 , the tension adjuster 6 is in the form of a disc, four adjusting push rods 8 are evenly distributed in the circumferential direction of the tension adjuster 6 in a radial manner, and a rubber ring 9 is sleeved on the tension adjuster 6 as a support body. One end of the U-shaped hoop 5 is fixed to the center of the disc structure by welding. The adjusting push rod 8 can be radially elongated or contracted. When the adjusting push rod 8 is axially elongated, the rubber ring 9 is expanded, the diameter of the rubber ring 9 is increased, the turning radius of the flexible cable 2 passing around the tension adjuster 6 is increased, and the tension on the flexible cable 2 is increased; when the adjusting push rod 8 is axially shortened, the diameter of the rubber ring 9 is reduced, the turning radius gap of the flexible cable 2 passing around the tension adjuster 6 is reduced, and the tension on the flexible cable 2 is reduced. The arc-shaped outer edge of the rubber ring 9 abuts against the flexible cable 2, and the elastic arc-shaped contact surface can avoid stress concentration on the flexible cable 2 and prevent local wear of the flexible cable 2.

[0055] In the preferred embodiment, the structure of the adjusting push rod 8 is as shown in Figure 4As shown, the adjusting push rod 8 is configured as a hydraulic push rod, which includes an oil reservoir 12 and a hydraulic push rod oil reservoir 13 separated by an oil baffle 10, and hydraulic oil flows between the oil reservoir 12 and the hydraulic push rod oil reservoir 13 through an oil hole provided on the oil baffle 10 under the control of an oil pressure controller 11 to achieve hydraulic adjustment, so that the adjusting push rod 8 realizes axial extension and retraction. The control device of the flexible support cable tension control device includes a controller 14 and a load sensor 15 provided in the flexible cable 2, and the controller 14 is signal connected with the load sensor 15 and the oil pressure controller 11 respectively. The load sensor 15 detects the load on the flexible cable 2 and transmits the signal to the controller 14, and the controller 14 controls the adjusting push rod 8 to extend and retract correspondingly according to the load state of the flexible cable 2, so that the tension of the flexible cable 2 can match the load. In the preferred embodiment, the load sensor 15 is provided in the core of the flexible cable 2, and a stress-strain sensor can be used.

[0056] In the preferred embodiment, as shown in the figure, the flexible support cable tension control device further includes a limiting groove 7, which is welded and fixed to the stand and is arranged above the tension adjuster 6, and the tension adjuster 6 is partially arranged in the limiting groove 7, so that the limiting groove 7 limits the flexible cable 2 in the plane where the first direction and the second direction are located, and prevents the flexible cable 2 from slipping off the flexible support cable tension control device during tension adjustment. Figure 2

[0057] In the preferred embodiment, as shown in the figure, the photovoltaic power generation device supplies power to the flexible support cable tension control device by self-power generation, thereby simplifying the supporting equipment of the photovoltaic power generation device and saving the occupied space. In other embodiments, the photovoltaic power generation can also be stored in a storage battery, and the storage battery can supply power to the flexible support cable tension control device. Figure 1

[0058] In other embodiments, the flexible support cable tension control device can also adopt other forms, for example, the limiting groove 7 can be arranged on the tension adjuster; in some embodiments, the adjusting push rod 8 can also be replaced by an electric screw or other forms of adjusting device, and the number of the adjusting push rod 8 can be reduced to one, which is arranged only in the area in contact with the flexible cable 2. In some embodiments, the rubber ring 9 can also be replaced by one or more metal support bodies with arc-shaped outer edges to support and guide the flexible cable 2.

[0059] The purpose of the above embodiments is to make a further detailed description of the utility model in combination with the drawings, so that those skilled in the art can understand the technical concept of the utility model. Within the scope disclosed by the utility model, the optimization or equivalent replacement of the parts structure involved, and the combination of the implementation manners in different embodiments without structural and principle conflicts, all fall within the protection scope of the utility model.​​

Claims

1. A flexible stent cable tension control device, characterized by, The tension regulator, the limiter and the control device, The flexible support cable tension control device is fixedly arranged on a photovoltaic support column, a flexible cable extends in a first direction between adjacent photovoltaic support columns, the limiter and the tension regulator define a second direction, the flexible cable passes through the tension regulator and is limited by the limiter, and the flexible cable extends in the second direction between the tension regulator and the limiter; The tension regulator comprises a support body and an adjusting push rod, the support body abuts against the flexible cable, the adjusting push rod is connected to the support body, the adjusting push rod can axially extend and retract to push the support body to move, and the adjusting push rod is provided with one or more The control device comprises a load sensor and a controller, the controller is connected to the load sensor and the adjusting push rod, the load sensor detects the load of the flexible cable, and the controller controls the axial movement of the adjusting push rod according to the signal of the load sensor.

2. The flexible stent cord tension control device of claim 1, wherein, The tension control device further comprises a limiting groove, the support body is at least partially arranged in the limiting groove, and the limiting groove limits the flexible cable in the plane where the first direction and the second direction are located.

3. The flexible stent cord tension control device of claim 1, wherein, The support body is provided with an arc-shaped outer edge, and the arc-shaped outer edge abuts against the flexible cable.

4. The flexible stent cord tension control device of claim 3, wherein, The support body is configured as an elastic ring.

5. The flexible stent cord tension control device of claim 4, wherein, The adjusting push rod is provided in plurality, and the adjusting push rods are uniformly arranged in the circumferential direction from the center of the elastic ring to the outer periphery.

6. The flexible stent cord tension control device of claim 1 or 4, wherein, The adjusting push rod is configured as a hydraulic push rod.

7. The flexible stent cord tension control device of claim 1 or 4, wherein, The tension regulator is configured as a disc.

8. The flexible stent cord tension control device of claim 1, wherein, The load sensor is arranged inside the flexible cable.

9. A photovoltaic power plant comprising upright posts, flexible cables and photovoltaic modules, the flexible cables being strung between adjacent upright posts, the photovoltaic modules being secured to the flexible cables, characterized in that, A tension control device is arranged between the flexible cable and the column, and the tension control device is configured as the flexible support cable tension control device as claimed in any one of claims 1 to 8.

10. The photovoltaic power device of claim 9, wherein, The tension control device is powered by the photovoltaic power generation device.

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