CN220550774U - Drainage tank, drainage system and photovoltaic device - Google Patents

Abstract

The utility model relates to a drainage tank, a drainage system and a photovoltaic device, wherein the drainage tank comprises: a first member having a carrying portion, a base portion located below the carrying portion, and two side wall portions connected between the carrying portion and the base portion, an upper surface of the carrying portion being for carrying the photovoltaic module, a lower surface of the base portion being for being arranged on the photovoltaic support; and a second member attached to the first member and cooperating with the bearing portion and the two side wall portions to enclose the first water guide groove, and the bearing portion is formed with a through hole penetrating into the first water guide groove; wherein, on the base, at the lateral outside of the two side wall parts and at a distance from the end parts of the base, support plates are respectively arranged to form second water guide grooves between the support plates and the corresponding side wall parts, and the two end parts of the bearing part are respectively in the range of the corresponding second water guide grooves in the lateral direction.

Description

Drainage tank, drainage system and photovoltaic device

Technical Field

The utility model relates to the field of photovoltaics, in particular to a drainage tank, a drainage system and a photovoltaic device.

Background

The drainage problem needs to be considered in the distributed photovoltaic power station, and rainwater between photovoltaic modules needs to be guided to avoid water leakage and seepage of the base parts of the photovoltaic modules. In order to solve the drainage problem, the conventional technical scheme mainly comprises a W-shaped waterproof guide rail and an M-shaped waterproof guide rail. These conventional drainage structures are complex in structure and single in installation, that is, only upper installation can be adopted.

For example, both the conventional W-type waterproof rail and the M-type waterproof rail require an installation operation from the upper portion by a worker standing at a high place at the time of manual installation, which results in that a part of the photovoltaic module is stepped on by the worker, and the photovoltaic module is stepped on to generate hidden cracks, which are not easily observed by naked eyes but seriously affect the life and the power generation of the power station. In addition, the efficiency of the person's installation operation at a high place is low and the safety is poor.

Therefore, there is a need for a drainage tank, drainage system and photovoltaic device for photovoltaic modules that is simple in construction, effective in avoiding leakage, and has a variety of mounting means.

Disclosure of Invention

The present utility model has been made to solve the above-mentioned problems.

The present utility model provides a drain tank comprising:

a first member having a carrying portion, a base portion located below the carrying portion, and two side wall portions connected between the carrying portion and the base portion, an upper surface of the carrying portion being for carrying the photovoltaic module, a lower surface of the base portion being for being arranged on the photovoltaic support; and a second member attached to the first member and cooperating with the bearing portion and the two side wall portions to enclose the first water guide groove, and the bearing portion is formed with a through hole penetrating into the first water guide groove; wherein, on the base, at the lateral outside of the two side wall parts and at a distance from the end parts of the base, support plates are respectively arranged to form second water guide grooves between the support plates and the corresponding side wall parts, and the two end parts of the bearing part are respectively in the range of the corresponding second water guide grooves in the lateral direction. The cross section of the first water guiding groove can be in a convex shape.

In one embodiment, the second component may be a separate U-shaped channel that is detachably attached to the first component to form the lower part of the first water guide channel in the shape of a letter-like. Each side wall portion may include: a first wall extending from the carrier toward the base, a second wall extending from the base toward the carrier, and a third wall extending laterally outward from the first wall to the second wall, and the U-shaped channel comprises: a bottom wall and two outer walls extending from the bottom wall towards respective third walls of the two side wall portions, respectively, wherein a protrusion/runner is provided on an inner surface of each third wall and a matching runner/protrusion is provided on an end surface of the respective outer wall; or a protrusion/runner is provided on the inner surface of each second wall and a matching runner/protrusion is provided on the outer surface of the respective outer wall.

In one embodiment, the second component may be fixedly attached to the first component to constitute the bottom of the convex-shaped cross-section of the first water guiding groove.

In one embodiment, both ends of the bearing part may be bent toward the second water guiding groove to form a face guiding structure.

In one embodiment, both end portions of the bearing portion may be bent toward the respective second water guiding groove and further extended to the respective side wall portion to form a hollow closed structure having a semicircular guide surface with a portion of the respective side wall portion; on the bearing part, an inverted T-shaped groove recessed toward the first water guiding groove is arranged at the position where the through hole is formed, and the groove is used for receiving the T-shaped head part of the T-shaped bolt and restraining the T-shaped head part to only allow the T-shaped head part to slide along the longitudinal direction of the groove; and the end of the base is provided with a folded edge which is bent towards the bearing part.

The utility model is also according to a photovoltaic device comprising: a photovoltaic module, a drainage channel according to one embodiment of the present utility model, and a coupling assembly coupling the photovoltaic module and the drainage channel, wherein the coupling assembly comprises: the briquetting, photovoltaic module are pressed from both sides between the carrier part of briquetting and water drainage tank, and the bolt, the column part of bolt pass the through-hole on briquetting and the carrier part and stretch into in the first guiding gutter to and the nut, the nut is screwed on the bolt from first guiding gutter to fix photovoltaic module locking to water drainage tank.

The present utility model also provides a photovoltaic device comprising: a photovoltaic module, a drainage channel according to one embodiment of the present utility model, and a coupling assembly coupling the photovoltaic module and the drainage channel, wherein the coupling assembly comprises: the photovoltaic module is arranged on the drainage tank through the pressing plate, the photovoltaic module is clamped between the pressing plate and the bearing part, and the nut is screwed on the T-shaped bolt to lock and fix the photovoltaic module on the drainage tank through the pressing plate.

The present utility model also provides a drainage system comprising: according to the drainage tank and the auxiliary water tank, one end of the auxiliary water tank is lapped on the support plate of the drainage tank so as to guide water between the laterally adjacent photovoltaic modules into the second water guide tank.

The drainage structure of the drainage tank for the photovoltaic module according to the present utility model includes two types of drainage tanks, namely, a first drainage tank through which rainwater is introduced through the penetration hole and a second drainage tank through which rainwater is introduced through the end of the bearing part, and thus is simple in structure and has a complete and non-porous drainage space, thereby being capable of more effectively avoiding leakage. In addition, through simple structure, can also provide multiple mounting means when guaranteeing effectively to avoid the seepage, promptly, both can select the mode of adopting the upper portion installation, also can select the mode of adopting the lower part installation to the practicality has been improved. In addition, when adopting the lower part installation, the workman need not stand on photovoltaic module to avoided trampling the hidden crack that photovoltaic module leads to.

Drawings

Fig. 1 is a schematic cross-sectional view showing a drain tank according to a first embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view showing a drain tank according to a second embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view showing a drain tank according to a third embodiment of the present utility model;

fig. 4 and 5 are a schematic cross-sectional view and a perspective view, respectively, showing a drain tank according to a fourth embodiment of the present utility model;

fig. 6 is a schematic cross-sectional view showing a drain tank according to a fifth embodiment of the present utility model;

fig. 7 is a schematic perspective view showing an exemplary photovoltaic device including a drainage channel according to a first embodiment of the present utility model;

fig. 8 is a partially enlarged schematic perspective view showing an exemplary photovoltaic device including a drain tank according to a first embodiment of the present utility model;

fig. 9 is a schematic cross-sectional view showing an exemplary photovoltaic device including a drainage channel according to a first embodiment of the present utility model;

fig. 10 is a schematic cross-sectional view showing an exemplary photovoltaic device including the drainage channel according to the fourth embodiment of the present utility model shown in fig. 4 and 5;

FIG. 11 is a schematic perspective view showing an exemplary photovoltaic device including a drainage system according to the present utility model, the drainage system including a drainage sink and a secondary sink according to a fourth embodiment of the present utility model; and

fig. 12 is another schematic perspective view of the photovoltaic device shown in fig. 11.

Detailed Description

Many aspects of the inventive techniques can be better understood with reference to the following drawings in conjunction with a few specific embodiments. The components in the drawings are not necessarily to scale and are not intended to illustrate the scope of the utility model. Emphasis instead being placed upon clearly illustrating the principles of the techniques of this utility model. For ease of reference, the same reference numerals may be used throughout the disclosure to identify the same or at least substantially similar or analogous components or features.

According to the present utility model, there is provided a drain tank comprising:

a first member having a carrying portion, a base portion, and two side wall portions connected between the carrying portion and the base portion, an upper surface of the carrying portion for carrying the photovoltaic module, a lower surface of the base portion for being arranged on the photovoltaic support; and

a second member attached to the first member and cooperating with the bearing portion and the two side wall portions to enclose a first water guide groove having a convex shape in cross section, and the bearing portion is formed with a through hole penetrating into the first water guide groove; wherein,

on the base, at a distance from the end of the base and laterally outside the two side wall parts, support plates are respectively arranged to form a second water guide groove between the support plates and the corresponding side wall parts, and

the two ends of the bearing part are respectively located in the range of the corresponding second water guide grooves in the transverse direction.

Hereinafter, the drainage tank for a photovoltaic module according to the present utility model will be described in detail by several embodiments with reference to fig. 1 to 6.

Fig. 1 is a schematic cross-sectional view showing a drainage tank 100 for a photovoltaic module (hereinafter simply referred to as "drainage tank 100") according to a first embodiment of the present utility model. As shown, the drain tank 100 may include a first member 110 and a second member 120. The first member 110 may have a bearing portion 111, a base portion 112, and two side wall portions 113 connected between the bearing portion 111 and the base portion 112. The upper surface of the carrier 111 may be planar, for example, and may be used to carry the photovoltaic module 600. The lower surface of the base 112 may be planar, for example, and is for placement on a photovoltaic support (not shown). The photovoltaic support may be a beam or purlin for supporting a photovoltaic device including the photovoltaic module 600 and the drainage channel 100. The second member 120 may be attached to the first member 110 and cooperate with the bearing portion 111 and the two side wall portions 113 to enclose a first water guiding groove 130 having a convex shape in cross section. The first water guide groove 130 is a cavity for water drainage. The support portion 111 has a through-hole 114 penetrating the first water guiding groove 130, and water can flow into the first water guiding groove 130 through the through-hole 114 to drain water. The through-holes 114 may be provided in plurality in the longitudinal direction of the drainage groove, and preferably at a laterally intermediate position of the bearing 111, that is, between two adjacent photovoltaic modules (see fig. 8). Rainwater between two adjacent photovoltaic modules can flow to the bearing part 111 through the module gap, and flow into the first water guiding groove 130 through the through holes 114, and is led out from the first water guiding groove 130, thereby realizing water drainage. More details of the through-hole 114 will be described later.

Further, on the base 112, at a distance from the end 116 of the base 112 laterally outside the two side wall portions 113, there are respectively provided the stay plates 115 to form the second water guide grooves 140 between the stay plates 115 and the respective side wall portions 113. The two end portions 117 of the bearing portion 111 are respectively located within the respective second water guiding grooves 140 in the lateral direction so that water on the bearing portion 111 can flow into the second water guiding grooves 140 from the end portions 117 to realize water drainage. For example, when the amount of rainfall is large, or when water seeps between the photovoltaic module 600 and the upper surface of the carrying portion 111, the rainwater on the upper surface of the carrying portion 111 may further flow into the second water guiding groove 140 along the both end portions 117 of the carrying portion 111 in addition to the first water guiding groove 130 through the through holes 114, and be led out from the second water guiding groove 140, thereby further realizing the water drainage.

In the illustrated example, the two support plates 115 are substantially perpendicular to the base 112, however, in other examples, the two support plates 115 may be disposed at an angle to the base 112, and the direction of the inclination is not particularly limited, i.e., the cross section of the second water guiding groove 140 may taper from top to bottom or from bottom to top, as long as water on the carrying part 111 can flow from the end 117 into the second water guiding groove 140 to drain water. Furthermore, the two ends 116 of the base 112 are fixing segments for fixing the drainage channel 100 to a photovoltaic support (e.g. a beam or purlin) where it can be pressed, for example, by a hold down plate and a coupling to fix the drainage channel to the photovoltaic support (e.g. a beam or purlin), as will be described in detail below. Alternatively, the two ends 116 (fixing segments) may be provided with a plurality of through holes through which fixing bolts are passed to connect to the photovoltaic support (e.g. a beam or purlin).

The drainage groove 100 according to the first embodiment of the present utility model has a drainage structure including two types of drainage grooves, namely, a first drainage groove 130 through which rainwater is introduced through the through hole 114 and a second drainage groove 140 through which rainwater is introduced through the end 117 of the bearing part 111, and thus is simple in structure and has a complete and non-porous drainage space, thereby being able to more effectively avoid leakage.

As shown in fig. 1, in this first embodiment, the second member 120 may be a separate U-shaped groove 121, and the U-shaped groove 121 is detachably attached to the first member 110 to constitute a lower part of the first water guiding groove 130 in the shape of a letter. Thus, in the first embodiment, it is possible to easily and quickly detach the second member 120 from the first member 110, then pour out the water flowing into the first guide groove 130, and then mount the second member 120 back to the first member 110. Thus, not only is assembly facilitated, but leakage is avoided. In this case, the through-holes 114 as described above may preferably be sized not only to allow water to flow therethrough but also to allow bolts to pass therethrough in order to fixedly mount the photovoltaic module 600 on the drain tank 100 by means of a coupling assembly (described in detail below) composed of bolts, nuts and compacts.

When the second member 120 is detached from the first member 110, the first water guiding groove 130 is a cavity opened at the lower side, and at this time, a nut can be screwed from the cavity opened at the lower side onto a bolt inserted from the upper surface of the carrying portion 111 through the through hole 114 and protruding into the cavity (see fig. 9), that is, the photovoltaic module can be mounted in this lower mounting manner in the present embodiment, so that a worker does not need to stand on the photovoltaic module, thereby avoiding hidden cracks caused by stepping on the photovoltaic module. In other words, the present embodiment provides a way of mounting from below, which will be described in more detail below. It is of course also possible to use an upper mounting, for example by directly fixing the photovoltaic module to the carrier 111 with screws.

In the illustrated example, the lower surface of the U-shaped groove 121 as the second member 120 is substantially flush with the lower surface of the base 112 of the first member 110, which has the advantage of maximizing the capacity of the first water guide groove 130. However, it will be appreciated by those skilled in the art that the two lower surfaces may not be flush, for example, the lower surface of the U-shaped channel 121 may be higher or slightly higher than the lower surface of the base 112 of the first member 110.

In one example, the U-shaped channel 121 may be removably mounted to the first member 110 by a chute/projection arrangement. Specifically, as shown in fig. 1, each side wall portion 113 may include a first wall 1131 extending from a lower surface of the bearing portion 111 toward the base portion 112 (substantially vertically downward in the example shown in fig. 1), a second wall 1132 extending from an upper surface of the base portion 112 toward the bearing portion 111 (substantially vertically upward in the example shown in fig. 1), and a third wall 1133 extending from the first wall 1131 substantially laterally outward to the second wall 1132. Wherein, on an inner surface (lower surface) of each third wall 1133, there may be provided protrusions 1134 protruding downward, respectively, at positions close to the second walls 1132. On the other hand, the U-shaped groove 121 may include a bottom wall 1211 and two outer walls 1212 extending from the bottom wall 1211 toward the respective third walls 1133 of the two side wall portions 113 (substantially vertically upward), respectively, and a slide groove 1213 is provided on an end surface of a free end of each outer wall 1212, each slide groove 1213 being capable of receiving and restraining in the corresponding slide groove a corresponding protrusion 1134 on the respective third wall 1133 of the respective side wall portion 113 such that the slide groove 1213 is capable of guiding sliding by the protrusion 1134 in a longitudinal direction (a direction perpendicular to the paper surface in the drawing) to thereby slide-insert-fit the U-shaped groove 121 onto or detach-therefrom the inner walls of the two side wall portions 113 of the first member 110. By the chute/projection structure, the U-shaped groove 121 can be easily and quickly inserted into the first member 110, facilitating assembly.

For example, when the construction is installed, the first member 110 of the drainage channel 100 may be fixed to the photovoltaic support (e.g., a beam or purlin), then the photovoltaic module 600 may be fixed to the carrying portion 111 of the first member 110, and then the second member 120 (U-shaped channel 121) of the drainage channel 100 may be slidably inserted into the side wall portion 113 of the first member 110 along the protrusion 1134 of the third wall 1133 of the side wall portion 113 of the first member 110, thereby completing the fixing operation.

Those skilled in the art will appreciate that the runners and protrusions described above may be reversed, i.e., the protrusions may be formed on the outer wall 1212 and the runners may be formed on the third wall 1133. In addition, the runner/boss structure may be formed at other locations as well, for example, on the inner surface of the second wall 1132 and the outer surface of the outer wall 1212. In this case, the specific position of the runner/boss structure is not particularly limited, and may be either near the third wall 1133 or near the base 112. In addition, in this example, the protrusion 1134 on the third wall 1133 is disposed close to the second wall 1132 in order to make the outer surface of the outer wall 1212 as close to or even against the inner surface of the second wall 1132 as possible to maximize the capacity of the first water guiding groove 130. However, in other examples the two surfaces may be separated by a distance. Furthermore, it is important that the U-shaped water tank (second member 120) has a longitudinal, horizontal supporting effect on the first member 110 in the cavity opened below the first water guiding tank 130, and structural strength of the first member 110 is improved to improve load capacity.

In addition to the chute/projection structure described above, the second member 120 (U-shaped channel 121) may also be attached to the first member 110 by other engagement means, so long as a removable mounting is achieved.

Furthermore, in the embodiment, both end portions 117 of the carrying portion 111 of the first member 110 are straight and are located at substantially middle positions of the corresponding second water guiding grooves 140 in the lateral direction, but these are only preferable arrangements, which has an advantage in that the photovoltaic module 600 can be carried more reliably. Of course, the drainage groove for a photovoltaic module according to the present utility model is not limited thereto.

Fig. 2 is a schematic cross-sectional view showing a drainage tank 200 for a photovoltaic module (hereinafter simply referred to as "drainage tank 200") according to a second embodiment of the present utility model. As shown in fig. 2, the drain tank 200 of the second embodiment may include a first member 210 and a second member 220. The first member 210 may have a bearing portion 211, a base portion 212, and two side wall portions 213 connected between the bearing portion 211 and the base portion 212. As in the first embodiment, the upper surface of the carrier 211 may be planar, for example, and may be used to carry a photovoltaic module (not shown), and the lower surface of the base 212 may be planar, for example, and may be used to be disposed on a photovoltaic support (not shown). The photovoltaic support may be a beam or purlin for supporting a photovoltaic device including the photovoltaic module and the drainage channel 200. The second member 220 may be attached to the first member 210, and may cooperate with the bearing portion 211 and the two side wall portions 213 to enclose a first water guiding groove 230 having a convex-shaped cross section. The first water guide 230 is a cavity for water drainage. The support portion 211 has a through hole 214 penetrating into the first water guide groove 230, and water can flow into the first water guide groove 230 through the through hole 214 to drain water. The penetration hole 214 may be provided in plurality in the longitudinal direction of the drainage groove (i.e., the length direction of the drainage groove), and is preferably located at a laterally intermediate position of the bearing portion 211, i.e., between two adjacent photovoltaic modules. Rainwater between two adjacent photovoltaic modules can flow to the bearing portion 211 through the module gap, and flow into the first water guide groove 230 through the through hole 214, and is led out from the first water guide groove 230, thereby realizing water drainage.

Further, on the base 212, at a distance from the end 216 of the base 212 laterally outside the two side wall portions 213, there are respectively provided the stay plates 215 to form the second water guide grooves 240 between the stay plates 215 and the respective side wall portions 213. The two end portions 217 of the bearing portion 211 are respectively located within the range of the corresponding second water guiding groove 240 in the lateral direction, so that water on the bearing portion 211 can flow into the second water guiding groove 240 from the end portions 217 to further realize water drainage. As in the first embodiment, for example, when the rainfall is large, or when water seeps between the photovoltaic module and the upper surface of the carrier portion 211, rainwater on the upper surface of the carrier portion 211 may further flow into the second water guide groove 240 along both end portions 217 of the carrier portion 211 in addition to entering the first water guide groove 230 through the through holes 214, and be led out from the second water guide groove 240, thereby further achieving water drainage.

As in the first embodiment, the two support plates 215 are substantially perpendicular to the base 212, however, in other examples, the two support plates 215 may be disposed at an angle to the base 212, and the direction of the inclination is not particularly limited, i.e., the cross section of the second water guide groove 240 may taper from top to bottom or from bottom to top, as long as water on the carrying portion 211 can flow into the second water guide groove 240 from the end 217.

Furthermore, as in the first embodiment, the two ends 216 of the base 212 are fixing segments for fixing the drainage channel 200 to a photovoltaic support (e.g., a beam or purlin), where they may be pressed, for example, by a hold down plate and a coupling to fix the drainage channel to the photovoltaic support (e.g., a beam or purlin), as will be described in detail below. Alternatively, the two ends 216 (fixing segments) may be provided with a plurality of through holes through which fixing bolts are passed to connect to the photovoltaic support (e.g. a beam or purlin).

The drain tank 200 according to the second embodiment of the present utility model has a drain structure including two types of drain tanks, namely, a first drain tank 230 into which rainwater is introduced through the through hole 214 and a second drain tank 240 into which rainwater is introduced through the end 217 of the bearing part 211, and thus is simple in structure and has a complete and non-porous drain space, thereby being capable of more effectively avoiding leakage.

It can be seen that the drain tank 200 of the second embodiment is substantially identical in structure to the drain tank 100 of the first embodiment, but is different therefrom in that: the second member 220 may be fixedly attached to the first member 210 to constitute the bottom of the convex-shaped cross section of the first water guide groove 230. In this example, the second part 220 is a plate and is an integrally formed member with the first part 210, and in other examples, the second part 220 and the first part 210 may be formed separately and then joined to form the first water guide 230 having a closed cavity. In this embodiment, a press block, a bolt, a nut, and the like similar to those in the first embodiment are not required, and the cost is reduced.

In this way, the second member 220 cannot be detached from the first member 210, and therefore, a connection hole (not shown, similar to the connection hole 118 described with reference to fig. 8) may be provided in the bearing portion 211, and after the photovoltaic module is placed on the bearing portion 211, the back lock hole of the C-face of the photovoltaic module frame profile is opposed to the connection hole, and finally, the fixation is performed by passing a bolt or screw through the connection hole and the back lock hole from below. In this embodiment, the photovoltaic module is also installed in a lower installation manner, so that a worker does not need to stand on the photovoltaic module, thereby avoiding hidden cracks caused by stepping on the photovoltaic module.

Accordingly, the drainage tank for a photovoltaic module according to the present utility model can provide various installation modes while ensuring effective leakage avoidance by a simple structure, and can be installed in a lower portion such as the drainage tank 100 of the first embodiment and the drainage tank 200 of the second embodiment, thereby improving practicality. Can also be fixed in a conventional upper fixing manner, as mentioned in the first embodiment, the photovoltaic module can be directly screwed onto the carrier part and in a recessed manner as will be discussed below

Fig. 3 is a schematic cross-sectional view showing a drainage tank 300 (hereinafter simply referred to as "drainage tank 300") for a photovoltaic module according to a third embodiment of the present utility model. The drain tank 300 of the third embodiment is basically the same as the drain tank 100 of the first embodiment, and is not described here, except that: the two end portions 317 of the bearing portion 311 are not straight, but are curved toward the second water guiding groove 340 to form an arc-shaped flow guiding structure. In this embodiment, the curvature is a smooth curvature, however in other embodiments it may not be a smooth curvature, but may be an angular curvature. Such a cambered surface flow guiding structure of the end 317 of the bearing 311 facilitates flow guiding, thereby further avoiding leakage.

Furthermore, although not shown herein, it will be understood by those skilled in the art that the above-described cambered surface flow guiding structure is equally applicable to the drain tank 200 of the second embodiment shown in fig. 2, i.e., the both end portions 217 of the bearing portion 211 may also be arranged to be bent toward the second water guiding tank 240 to form the cambered surface flow guiding structure.

Fig. 4 and 5 are a schematic cross-sectional view and a perspective view, respectively, showing a drainage groove 400 for a photovoltaic module (hereinafter simply referred to as "drainage groove 400") according to a fourth embodiment of the present utility model. The drain tank 400 of the fourth embodiment has substantially the same structure as the drain tank 200 of the second embodiment, and is not described herein again, except for three points.

First, as with the drain tank 300 of the second embodiment, the two end portions 417 of the carrying portion 411 of the drain tank 400 are also bent toward the second water guiding tank 440 to form an arc-shaped diversion structure, and in addition, the third wall 4133 extending to the side wall portion 413 is further bent to enclose a hollow closed structure with a semicircular diversion surface with the first wall 4131 and the third wall 4133 of the side wall portion 413. Such a hollow closed structure not only forms a cambered (semicircular) flow guiding structure, but also improves the structural strength of the bearing part 411. The water seepage between the photovoltaic module and the upper surface of the bearing part 411 flows into the second water guiding groove 440 along the cambered (semicircular) flow guiding structure of the two end parts 417 to be led out.

Second, on the bearing part 411, an inverted T-shaped groove 418 recessed (recessed downward in the drawing) toward the first water guide groove 430 is provided at a position where the through hole 414 is formed (in the illustrated embodiment, the middle of the bearing part 411), the groove 418 for receiving the T-shaped head of the T-shaped bolt and restraining the T-shaped head of the T-shaped bolt so as to allow sliding thereof only in the longitudinal direction of the groove 418. The rainwater flows into the groove 418 and flows into the first water guide groove 430 through the through hole 414, thereby realizing water discharge. An inverted T-shaped groove 418 provided in the middle of the carrier 411 facilitates mounting of the photovoltaic module, as described in more detail below.

Third, the end 416 of the base 412 laterally outboard of the support plate 415 is provided with an upward flange 419. The flange 419 is used to cooperate with a lower platen to mount the drain tank 400 to a photovoltaic support (e.g., a beam or purlin). In addition, a third water guiding groove 450 is formed between the folded edge 419 and the vertical plate 415 to further realize water drainage and further avoid leakage.

Fig. 6 is a schematic cross-sectional view showing a drain tank 500 (hereinafter simply referred to as "drain tank 500") according to a fifth embodiment of the present utility model. The drain tank 500 of the fifth embodiment is substantially identical to the drain tank 400 of the fourth embodiment in that it adopts the structure of the second member 120 of the drain tank 100 of the first embodiment, that is, the second member 520 of the drain tank 500 of the fifth embodiment is also a separate U-shaped groove 521, and is detachably attached to the first member 510 by the slide groove/protrusion structure provided on the side wall portion 513 and the U-shaped groove 521 as described above.

Next, the photovoltaic device according to the present utility model will be described in detail with reference to fig. 7 to 12. Fig. 7 to 9 are a schematic perspective view, a partially enlarged perspective view, and a sectional view showing an exemplary photovoltaic device 1000 including the drainage groove 100 according to the first embodiment of the present utility model.

As shown in fig. 7 to 9, the photovoltaic device 1000 includes the exemplary drainage channel 100 of the first embodiment, the photovoltaic module 600, and the coupling assembly 101 coupling them together as described above. For ease of illustration, only the left-hand block of photovoltaic modules is shown in fig. 7 and 8, and in addition, the coupling assembly 101 has also been omitted.

The photovoltaic module 600 may be mounted to the carrier 111 of the drainage channel 100 in a variety of ways. For example, the photovoltaic module 600 may be directly fixed to the upper surface of the supporting portion 111 by bolts or screws, for example, the supporting portion 111 may be provided with the connection holes 118 (fig. 7 and 8), and after the photovoltaic module 600 is placed on the supporting portion 111, the back lock hole (not shown) of the C-side of the frame profile of the photovoltaic module 600 is located opposite to the connection holes 118, and finally, the photovoltaic module 600 is fixed by bolts or screws. In other embodiments, the photovoltaic module 600 may be installed by coupling the module 101, as in the present embodiment shown in fig. 9. In other embodiments, the photovoltaic module 600 may be mounted by an inverted-T groove structure, as will be described in more detail below. In other embodiments, the photovoltaic module 600 may even be directly adhered to the carrier 111 by an adhesive or the like. The manner of coupling employed in fig. 9 is described in detail below.

As best shown in fig. 9, the photovoltaic module 600 is fixedly mounted to the drain tank 100 by the coupling assembly 101. Coupling assembly 101 includes a press block 102, a bolt 103, and a nut 104. The photovoltaic module 600 is sandwiched between the press block and the bearing portion 111 of the drain tank 100, and the column portion of the bolt 103 extends into the first water guide tank 130 through the press block 102 and the through-hole 114 in the bearing portion 111. With the second member 120 (U-shaped groove 121) detached from the first member 110, the first water guiding groove 130 is a cavity opened at the lower side, from which the nut 104 is screwed onto the bolt 103 and tightened, thereby locking the photovoltaic module 600 to the water discharging groove 100. The photovoltaic module is fixed through the press block 102, and an operation space is reserved at the cavity opened below the first component 110, so that construction is facilitated, and the working efficiency of the photovoltaic power station is improved.

In this example, the water seepage between the photovoltaic module 600 and the upper surface of the bearing portion 111 can flow into the first water guiding groove 130 along the through hole 114 on one hand, and can flow into the second water guiding groove 140 via the end portion 117 of the bearing portion 111 on the other hand, so that the photovoltaic device 1000 according to the present utility model has a simple structure and a complete and non-porous drainage space, thereby more effectively avoiding the seepage. In addition, as best shown in fig. 7 and 8, the second part 120 (U-shaped groove 121) of the drainage channel 100 may be pulled out of the first part 110 in the longitudinal direction to complete the installation of the photovoltaic module 600 or to pour water out of the second part 120 (U-shaped groove 121) and then be inserted back, further facilitating drainage.

Further, in this example, the through-hole 114 allows not only water to flow into the first water guiding groove 130 but also the bolt 103 to pass therethrough, thereby locking the photovoltaic module 600 to the water discharging groove 100 by the coupling assembly 101. By adopting the lower installation mode that the nut 104 can be screwed in from below so as to lock and install the photovoltaic module, workers do not need to stand on the photovoltaic module to carry out installation operation, so that hidden cracks possibly caused by treading the photovoltaic module are avoided. It will be appreciated by those skilled in the art that this lower mounting arrangement is also applicable to the drain tank 500 according to the fifth embodiment as described above.

Fig. 10 is a schematic cross-sectional view illustrating an exemplary photovoltaic device 2000 including the drainage channel 400 according to the fourth embodiment shown in fig. 4 and 5. Further, fig. 10 also shows one specific example of how the drainage channel for the photovoltaic module is mounted to a photovoltaic support (e.g., a beam or purlin).

As shown in fig. 10, the exemplary photovoltaic device 2000 includes: the drainage channel 400, photovoltaic module 600, and coupling assembly 105 coupling them together of the fourth embodiment as described above. The coupling assembly 105 includes a T-bolt 106, a nut 107, and a pressure plate 108. The T-bolts 106 are inverted such that the T-shaped heads are caught in the inverted T-shaped grooves 418 on the carrying portion 411 of the drain tank 400, the photovoltaic module 600 is sandwiched between the pressing plate 108 and the carrying portion 411, and the nuts 107 are screwed on the bolts 106, thereby locking and fixing the photovoltaic module 600 on the carrying portion 411 via the pressing plate 108. Specifically, at installation, the bolts invert the T-bolts 106, insert the T-heads of the T-bolts 106 into the inverted T-grooves 418 from the longitudinal ends of the inverted T-grooves 418, and slide the T-bolts 106 longitudinally along the grooves 418 to slide them into place, then place the photovoltaic module 600, the press plates 108 in order, and finally tighten the nuts 107 to complete the coupling.

In this example, the water seepage between the photovoltaic module 600 and the upper surface of the bearing portion 411 may flow into the first water guiding groove 430 along the through hole 418 (not shown) in the groove 418, and may flow into the second water guiding groove 440 via the end 417 of the bearing portion 411, so that the photovoltaic device 2000 according to the present utility model is simple in structure and has a complete and non-porous drainage space, thereby more effectively avoiding seepage. Further, in this example, the structure of the T-shaped groove 418 of the carrier 411 facilitates the installation of the photovoltaic module 600.

Further, as shown in fig. 10, in one example, the drainage channel 400 may be secured to a photovoltaic support 700 (e.g., a cross beam or purlin (of a building)) 700 by the lower platen 201 and the coupling 202. Specifically, the lower platen 201 is a channel-shaped member and is pressed upside down against both end portions 416 of the base 412 of the drainage channel 400, and both end portions 416 are fixedly mounted on the photovoltaic support 700 by passing through the coupling members 202 of the lower platen 201 and the photovoltaic support 700, thereby fixedly mounting the entire exemplary photovoltaic device 2000 on the photovoltaic support 700. In other examples, the fixed mounting may be achieved in other ways.

Fig. 11 and 12 are perspective views of another exemplary photovoltaic device 3000. The photovoltaic device 3000 includes a drainage system that may include a drainage tank and a secondary water tank 800. In this example, the drain tank 400 of the fourth embodiment is described as an example. That is, the drainage system includes a drainage tank 400 and a sub-water tank 800. One end of the sub-tank 800 is overlapped on the support plate 415 of the drain tank 400, and the sub-tank 800 is disposed substantially orthogonal to each other with respect to the drain tank 400, i.e., the sub-tank 800 is disposed in a lateral direction, thereby guiding rainwater between two laterally adjacent photovoltaic modules into the second water guiding tank 440. In this example, the drainage system is drained by the drainage tank 400 in the longitudinal direction and the sub-tank 800 in the lateral direction, forming a two-stage drainage system, and the longitudinal space occupation is small. It will be appreciated by those skilled in the art that the drainage channels 100, 200, 300, 500 of any of the other embodiments may also be combined with the secondary water channel 800 to form a two-stage drainage system.

It should be noted here that although a photovoltaic device including a photovoltaic module, a drainage tank and a coupling module and a photovoltaic device including a photovoltaic module, a drainage system (drainage tank and sub-tank) and a coupling module are disclosed herein, the photovoltaic module and the drainage tank (drainage system) are not limited to being assembled together to constitute the photovoltaic device at the time of installation, and then the entire photovoltaic device is fixed to a photovoltaic support (e.g., a beam or purlin), but the photovoltaic module may be mounted to the drainage tank (drainage system) in the case where the drainage tank (drainage system) has been fixedly mounted to the photovoltaic support (e.g., a beam or purlin) as described above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present disclosure, and not for limiting the same; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure.

Claims (10)

1. A drain tank, comprising:

a first member having a carrying portion, an upper surface for carrying a photovoltaic module, a base portion located below the carrying portion, and two side wall portions connected between the carrying portion and the base portion, a lower surface of the base portion for being arranged on a photovoltaic support; and

a second member attached to the first member and cooperating with the bearing portion and the two side wall portions to enclose a first water guide groove, and the bearing portion is formed with a through hole penetrating into the first water guide groove; wherein,

on the base, at a distance from the end of the base and laterally outside the two side wall parts, support plates are respectively arranged to form a second water guide groove between the support plates and the corresponding side wall parts, and

the two ends of the bearing part are respectively located in the range of the corresponding second water guide grooves in the transverse direction.

2. The drain tank according to claim 1, wherein the first water guiding groove has a convex shape in cross section.

3. The drain tank according to claim 2, wherein,

the second component is a separate U-shaped channel that is detachably attached to the first component to constitute a lower part of the first water guiding channel in the shape of a letter-like.

4. The drain tank as claimed in claim 3, wherein,

each side wall portion includes: a first wall extending from the carrier toward the base, a second wall extending from the base toward the carrier, and a third wall extending laterally outward from the first wall to the second wall, an

The U-shaped groove piece comprises: a bottom wall and two outer walls extending from said bottom wall towards respective third walls of the two side wall portions, respectively, wherein,

a projection/runner is provided on the inner surface of each third wall and a matching runner/projection is provided on the end surface of the respective outer wall; or alternatively

A projection/runner is provided on the inner surface of each second wall and a matching runner/projection is provided on the outer surface of the respective outer wall.

5. The drain tank according to claim 2, wherein,

the second part is fixedly attached to the first part to constitute the bottom of the convex-shaped cross section of the first water guiding groove.

6. The drain tank according to any one of claims 1 to 5, wherein,

the two end portions of the bearing portion are bent towards the second water guiding groove to form a surface guide structure.

7. The drain tank according to any one of claims 1 to 5, wherein,

the two end portions of the bearing portion are bent toward the corresponding second water guiding groove and further extend to the corresponding side wall portion to form a hollow closed structure with a semicircular guide surface with a part of the corresponding side wall portion;

on the bearing part, an inverted T-shaped groove recessed toward the first water guiding groove is arranged at a position where the through hole is formed, and the groove is used for receiving a T-shaped head part of a T-shaped bolt and restraining the T-shaped head part to only allow the T-shaped head part to slide along the longitudinal direction of the groove; and is also provided with

The end of the base is provided with a folded edge which is bent towards the bearing part.

8. A photovoltaic device, comprising:

the photovoltaic module comprises a photovoltaic module body and a photovoltaic module body,

a drainage channel as claimed in claim 3 or 4, and

a coupling assembly coupling the photovoltaic module and the drainage tank, wherein,

the coupling assembly includes:

a pressing block, the photovoltaic module being interposed between the pressing block and the bearing portion of the drainage tank,

a bolt, the column part of which passes through the pressing block and the through hole on the bearing part to extend into the first water guide groove, and

and the nut is screwed on the bolt from the first water guide groove so as to lock and fix the photovoltaic module on the water drainage groove.

9. A photovoltaic device, comprising:

the photovoltaic module comprises a photovoltaic module body and a photovoltaic module body,

the drain tank of claim 7, and

a coupling assembly coupling the photovoltaic module and the drainage tank, wherein,

the coupling assembly includes:

a T-bolt, the T-head of the T-bolt being placed in the inverted T-groove on the carrier,

a platen, the photovoltaic module being sandwiched between the platen and the carrier, an

And the nut is screwed on the T-shaped bolt to lock and fix the photovoltaic module on the drainage groove through the pressing plate.

10. A drainage system, comprising:

the drain tank according to any one of claims 1 to 7, and

and one end of the auxiliary water tank is lapped on the support plate of the drainage tank so as to guide water between the transversely adjacent photovoltaic modules into the second water guide tank.