CN211345890U - Follow-on spotlight type solar collector - Google Patents

Abstract

The utility model discloses a solar collector, especially a follow-on spotlight type solar collector belongs to solar energy collection equipment technical field. The utility model discloses a follow-on spotlight type solar collector, including solar collector pipe and heat collector body, the heat collector body includes that the inner wall has the reflecting plate of reflection of light face, and the both ends of reflecting plate are equipped with the end plate, and the reflecting plate is equipped with the clear cover with the top of both ends board and forms the heat collector inner chamber, solar collector pipe is located the heat collector inner chamber, and its both ends link to each other with both ends board respectively. Adopt the utility model discloses a follow-on light-concentrating solar collector can avoid impurity to get into the heat collector inner chamber, gets into on the reflection of light face of reflecting plate, and the impurity of having collected on the transparent cover plate is also cleared up more easily, has improved light-concentrating solar collector's life and heat collection effect.

Description

Follow-on spotlight type solar collector

Technical Field

The utility model relates to a solar collector, especially a follow-on spotlight type solar collector belongs to solar energy collection equipment technical field.

Background

The concentrating solar heat collector is a device which utilizes a reflector, a lens or other optical devices to change the direction of solar rays entering a light collecting port of the heat collector and concentrates the solar rays on a receiver so as to supply heat and generate electricity.

The concentrating solar heat collector is a device which utilizes a reflector, a lens or other optical devices to change the direction of solar rays entering a light collecting port of the heat collector and concentrate the solar rays on a receiver, and higher energy flux density can be obtained through single-axis or double-axis tracking. The solar heat collector collects solar radiation energy to a smaller area through the concave reflecting mirror or the lens, so that the heat flow on a unit area is increased, the heat exchange area between the receiver and the environment is reduced, the temperature of a working medium and the heat efficiency of the heat collector are improved, and the solar heat collector has the defects that the solar heat collector can only receive direct radiation and needs a tracking system to be matched, so that the cost is increased. At present, the light-gathering solar heat collector is mainly used for solar thermal power generation, solar hydrogen production, solar furnaces, double-effect LiBr-H2O absorption refrigeration systems and the like, and belongs to the category of medium-high temperature heat collectors. There are three main application forms of concentrating solar collectors: trough collectors, tower collectors, and dish collectors.

The trough type solar heat collector focuses and reflects sunlight on a line by means of a trough type parabolic reflector, and a heat collecting pipe is arranged on the focal line to absorb solar radiation energy after the sunlight is focused and reflected. The heat carrier in the pipe heats the fluid in the pipe for direct utilization, or heats the fluid in the pipe for steam, and pushes the steam turbine to generate electricity by means of steam power circulation. The concentration ratio of the trough system is between 30 and 60, the temperature can reach 200 ℃ at most, and the power of the trough parabolic solar power station is 10 to 100MW, which is the maximum power in all the solar thermal power stations at present. For example, CN200720005005.9 discloses a concentrating solar heat collector, which belongs to a trough type solar heat collector.

In the prior art, the reflective surface of the reflective plate of the trough-type solar collector is exposed in the atmospheric environment, impurities (such as dust, snow and the like) which affect the reflective effect are easily collected on the reflective surface of the trough-type reflective plate, and the reflective surface is easily abraded when the reflective plate is cleaned, so that the heat collection effect of the solar collector is affected.

Disclosure of Invention

The invention of the utility model aims to: to the problem that above-mentioned exists, a follow-on spotlight type solar collector is provided, the utility model discloses can prevent that impurity such as dust from getting into on the reflection of light face of reflecting plate.

The utility model adopts the technical scheme as follows:

the utility model provides a follow-on spotlight type solar collector, includes solar collector pipe and collector body, the collector body includes that the inner wall has the reflecting plate of reflection of light face, and the both ends of reflecting plate are equipped with the end plate, and the reflecting plate is equipped with transparent apron with the top of both ends plate and forms the collector inner chamber, solar collector pipe is located the collector inner chamber, and its both ends link to each other with both ends plate respectively.

Adopt the utility model discloses a during light-concentrating solar collector, benefit from the design of end plate and transparent cover plate, formed the heat collector inner chamber jointly with the reflecting plate, and solar collector arranges in the heat collector inner chamber, makes solar collector's reflection of light face and atmospheric environment isolated mutually so, can avoid the reflection of light face of reflecting plate to collect impurity (like dust, snow etc.), the impurity that the transparent cover plate was collected is also cleared up more easily, can improve light-concentrating solar collector's life and collection effect.

Furthermore, the reflecting surface of the reflecting plate is in a groove-shaped paraboloid shape, the reflecting plate can focus and reflect sunlight on a focal line, and the solar heat collecting pipe is positioned on the focal line. Namely, the light-concentrating solar collector is a trough type solar collector. The utility model discloses be particularly suitable for making slot type solar collector. Transparent cover plate is preferably flat, of course also can be arch shape, and compared with the reflecting plate, the reflecting plate is owing to be the concave surface, collects impurity more easily, and transparent cover plate should not collect impurity relatively, and in actual engineering application, spotlight type solar collector need follow sunlight pivoted, consequently, the collection can take place the slope at transparent cover plate, and the collection can the landing at the partial impurity on transparent cover plate surface, consequently, the utility model discloses a spotlight type solar collector still has certain self-cleaning function.

Furthermore, the wall surfaces opposite to the two end plates are also provided with reflecting surfaces. The solar energy can be more fully utilized.

Optionally, a plurality of support rods for supporting the solar heat collecting tube are arranged on the reflecting plate between the two end plates. The design of bracing piece plays the supporting role to solar energy collection pipe, improves the reliability of spotlight type solar collector.

Preferably, the inner cavity of the heat collector is a closed cavity. The design can further ensure that the inner cavity of the heat collector is isolated from the outside, and the heat collection effect of the light-gathering solar heat collector is improved; the situation that dust in the atmosphere invades the inner cavity of the heat collector is avoided.

Furthermore, the heat collector body is provided with a ventilation mechanism for keeping the pressure balance between the inner cavity of the heat collector and the outside. The design of ventilative mechanism for the business turn over heat collector inner chamber that the air that has only filtered impurity can, make light-concentrating solar collector keep inside and outside pressure balance, can improve light-concentrating solar collector's life. Because the heat collector inner chamber is inclosed and holds the chamber, under operating condition, the condition that expend with heat and contract with cold can exist to light concentrating solar collector, if do not have ventilative mechanism's design, light concentrating solar collector can have inside and outside pressure differential, will influence life.

Further, the ventilation mechanism is a ventilation valve assembled on the end plate. The purpose of keeping the pressure balance between the inner cavity of the heat collector and the outside can be achieved.

In practical engineering application, the concentrating solar heat collector needs to rotate along with sunlight, and a heat collector body (mainly a reflecting plate) needs to rotate along with the sunlight, and the concentrating solar heat collector can be realized by a sun tracking device in the prior art. The solar heat collecting pipe can rotate along with or without the heat collector body, so the following two designs are provided. The first design is the preferred design, and the solar heat collecting pipe can keep static state, and the connection of solar heat collecting pipe and other relevant system pipelines is easier, and the practicality is stronger.

In the first alternative design, the solar heat collecting tube is rotatably connected with the two end plates, and when the heat collector body rotates around the axis of the solar heat collecting tube, the solar heat collecting tube can keep static.

Furthermore, the solar heat collecting pipe is connected with the end plate through a sliding sealing piece, so that the air tightness of the inner cavity of the heat collector is not damaged while the solar heat collecting pipe is rotatably connected with the end plate.

In the second optional design, the solar heat collecting tube is fixedly connected with the two end plates, and when the heat collector body rotates around the axis of the solar heat collecting tube, the solar heat collecting tube rotates along with the heat collector body.

Drawings

FIG. 1 is a schematic view of a concentrating solar collector;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the seal mount prior to assembly;

FIG. 5 is a front elevational view of the seal mount assembly prior to assembly;

FIG. 6 is a schematic view of the seal mount prior to assembly with the sliding seal ring;

FIG. 7 is a schematic view of the seal mount in combination with a sliding seal ring;

FIG. 8 is a side view of a seal mounting structure;

FIG. 9 is another side schematic view of a seal mounting arrangement;

FIG. 10 is a schematic view of a first perspective of the vent valve mount;

FIG. 11 is a schematic view of a second perspective of the vent valve mount;

FIG. 12 is a front view of the vent valve mount;

figure 13 is a schematic view of the construction of the gland;

FIG. 14 is a schematic structural view of the vent valve mounting seat, the sealing sleeve and the vent valve before combination;

FIG. 15 is a schematic structural view of the combination of the vent valve mounting seat, the sealing sleeve and the vent valve;

fig. 16 is a schematic structural view of a breather valve mounting structure.

The labels in the figure are: 100-reflecting plate, 110-back ribbed plate, 200-end plate, 210-clamp hole, 300-transparent cover plate, 310-collector inner cavity, 400-supporting rod, 500-solar heat collecting pipe, 600-sealing element mounting seat, 610-first base body, 611-first arc groove, 612-inserting block, 613-hook part, 614-first fixing hole, 615 first half flange, 620-second base body, 621-second arc groove, 622-groove, 623-hook groove, 624-second fixing hole, 625-second half flange, 626-elastic cavity, 700-sliding sealing ring, 800-vent valve mounting seat, 810-outer cylinder part, 811-limiting part, 812-clamp part, 820-inner cylinder part, 830-partition part, 840-elastic groove, 900-sealing sleeve, 910-ear, 1000-vent valve.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

All of the features disclosed in the present application, or all of the steps in any method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1 to 3, the improved light-gathering solar thermal collector of the embodiment includes a solar thermal collecting tube 500 and a thermal collector body, the thermal collector body includes a reflecting plate 100 whose inner wall has a light reflecting surface, end plates 200 are disposed at two ends of the reflecting plate, a transparent cover plate 300 is assembled on the top of the reflecting plate 100 and the top of the two end plates 200 to form a thermal collector inner cavity 310, the solar thermal collecting tube 500 is located in the thermal collector inner cavity 310, and two ends of the solar thermal collecting tube are respectively connected to the two end plates 200.

Adopt the utility model discloses a during spotlight type solar heat collector, benefit from the design of end plate 200 and transparent cover 300 (like toughened glass), formed heat collector inner chamber 310 jointly with reflecting plate 100, and solar energy collection pipe 500 arranges in heat collector inner chamber 310, make solar heat collector's reflection of light face and atmospheric environment isolated mutually so, can avoid reflecting plate 100's reflection of light face to collect impurity (like dust, snow etc.), the impurity that has collected on the transparent cover 300 is also cleared up more easily, can improve spotlight type solar heat collector's life and collection effect.

Further, as shown in fig. 1 and 3, the reflecting surface of the reflecting plate 100 has a groove-shaped parabolic shape, which can focus and reflect sunlight on a focal line on which the solar heat collecting tube 500 is located. Namely, the light-concentrating solar collector is a trough type solar collector. The utility model discloses be particularly suitable for making slot type solar collector. Transparent cover 300 is preferably flat, of course also can be arch shape, compare with reflecting plate 100, reflecting plate 100 is owing to be the concave surface, collects impurity more easily, and transparent cover 300 is suitable for relatively collecting impurity, and in actual engineering application, spotlight type solar collector need follow sunlight pivoted, consequently, the collection can take place to incline at transparent cover 300, and the collection can the landing at the surperficial partial impurity of transparent cover 300, consequently, the utility model discloses a spotlight type solar collector still has certain self-cleaning function.

Further, the opposite wall surfaces of the two end plates 200 also have light reflecting surfaces. The solar energy can be more fully utilized.

Alternatively, as shown in fig. 1 to 3, a plurality of support rods 400 for supporting the solar heat collecting tube 500 are provided between the two end plates 200 and the reflective plate 100. The design of the supporting rod 400 supports the solar heat collecting tube 500, and improves the reliability of the light-gathering solar heat collector.

Further, as shown in fig. 2 and 3, a plurality of back ribs 110 are provided on the back surface of the reflection plate 100. The reflection plate 100 can be reinforced.

Preferably, the inner cavity 310 of the heat collector is a closed cavity. The design can further ensure that the inner cavity 310 of the heat collector is isolated from the outside, and the heat collection effect of the light-gathering solar heat collector is improved; the dust in the atmosphere is prevented from invading into the inner cavity 310 of the heat collector. The reflecting plate 100, the end plate 200 and the transparent cover plate 300 are connected in a sealing manner, so that the inner cavity 310 of the heat collector is a sealed cavity, for example, technical means of sealing and assembling by using sealant, sealing strips and the like are adopted, and the technical problem does not exist.

Further, the heat collector body is provided with a ventilation mechanism for keeping the pressure balance between the inner cavity 310 of the heat collector and the outside. The design of ventilation mechanism for the business turn over heat collector inner chamber 310 that the air that has only filtered impurity can, make light-concentrating solar collector keep inside and outside pressure balance, can improve light-concentrating solar collector's life. Because the inner cavity 310 of the heat collector is a closed cavity, the light-focusing solar heat collector has the condition of expansion with heat and contraction with cold under the actual working condition, and if the design of the ventilation mechanism is not adopted, the light-focusing solar heat collector has the internal and external pressure difference, so that the service life is influenced.

Further, as shown in fig. 16, the ventilation mechanism is a ventilation valve 1000 mounted on the end plate 200. The purpose of keeping the pressure balance between the inner cavity 310 of the heat collector and the outside can be achieved. Preferably, the air vent valves 1000 are mounted on both end plates 200, but it is also possible that only one of the end plates 200 is mounted with an air vent valve 1000; of course, the airing valve 1000 may be mounted on the reflection plate 100. Specifically, the object of attaching the breather valve 1000 to the end plate 200 can be achieved by using the breather valve attachment structure according to the second embodiment described below.

In practical engineering application, the concentrating solar collector needs to rotate along with sunlight, and the collector body (mainly the reflecting plate 100) needs to rotate along with the sunlight, and the concentrating solar collector can be realized by a sun tracking device in the prior art. The solar heat collecting tube 500 may or may not rotate to rotate with the heat collector body, and thus, the following two embodiments are proposed. The first embodiment is the preferable design, the solar heat collecting pipe can keep static state, the connection of the solar heat collecting pipe and other related system pipelines is easier, and the practicability is stronger.

In an alternative first embodiment, the solar heat collecting tube 500 is rotatably connected to the two end plates 200, and the solar heat collecting tube can be kept static when the heat collector body rotates around the axis of the solar heat collecting tube.

Further, the solar heat collecting tube 500 is connected with the end plate 200 through a sliding sealing member, so that the solar heat collecting tube can be rotatably connected with the end plate without destroying the air tightness of the inner cavity of the heat collector. Specifically, with the seal mounting structure according to the third embodiment described below, the solar heat collecting pipe 500 can be connected to the end plate 200 by a sliding seal, as shown in fig. 8 to 9. The first embodiment is combined with the design of the support rod 400, and at this time, a polymer bearing is disposed between the support rod 400 and the solar heat collecting tube 500.

In a second alternative embodiment, the solar heat collecting tube 500 is fixedly connected to the two end plates 200, and when the solar heat collecting tube rotates around the axis of the solar heat collecting tube, the solar heat collecting tube follows the rotation of the solar heat collecting tube.

In conclusion, the improved concentrating solar collector can prevent impurities from entering the inner cavity of the collector and entering the reflecting surface of the reflecting plate, the impurities collected on the transparent cover plate can be cleaned more easily, and the service life and the heat collecting effect of the concentrating solar collector are improved; the utility model discloses can form modular subassembly, transportation simple to operate can install fast and arrange the solar energy collection system in, and application prospect is extensive, and closed design, it is convenient to maintain, and life is longer, and the result of use is better.

Example two

In the first embodiment, when the vent valve mounting structure of the second embodiment is adopted, the vent valve 1000 can be mounted on the end plate 200, so that the purpose of keeping the internal and external pressure balance of the concentrating solar thermal collector can be achieved.

As shown in fig. 10 to 16, a vent valve mounting structure of the present embodiment includes a vent valve mounting seat 800, a sealing sleeve 900, a vent valve 1000, and an end plate 200;

the air vent valve mounting seat comprises an inner cylinder part 820 for mounting an air vent valve and an outer cylinder part 810 sleeved outside the inner cylinder part, wherein the outer cylinder part 810 and the inner cylinder part 820 are coaxial, and are connected through a partition plate 830 at a distance; an elastic groove 840 is formed in the rear end of the vent valve mounting seat 800, a clamping portion 812 and a limiting portion 811 are arranged on the periphery of the outer cylinder portion 810, the clamping portion 812 is located between the limiting portion 811 and the rear end of the vent valve mounting seat, and a clamping gap for clamping is formed between the limiting portion and the clamping portion;

the sealing sleeve 900 is embedded between the outer cylinder part 810 and the inner cylinder part 820 and seals the elastic groove 840; the breather valve 1000 is mounted on the inner cylinder part 820, and the end plate 200 is provided with a caliper hole 210 for inserting a breather valve mounting seat; the caliper portion 812 of the breather valve mounting seat 800 passes through the caliper hole 210 of the end plate 200 so that the breather valve 100 is fitted to the end plate 200.

Further, as shown in fig. 13, a lug portion 910 is projected from the rear end of the sealing sleeve 900, and the lug portion 910 is inserted into an elastic groove 840 at a partition portion position. It is possible to further ensure that the airtightness between both sides of the end plate 200 is not broken.

Further, as shown in fig. 12, an end surface 8122 of the caliper portion 812 facing the stopper portion is an inclined surface inclined toward the rear end of the air vent valve seat. Preferably, the inclination angle β of the inclined surface is 20 ° ± 1 °. The end plate 200 can be securely clamped by the stopper portion and the caliper portion. As apparent, the sectional diameter of the caliper portion gradually increases as viewed from the rear end toward the front end of the vent valve mounting seat, forming a face 8121 of the rear end of the vent valve mounting seat so that the caliper portion 812 passes through the caliper hole 210 of the end plate 200.

Further, as shown in fig. 10 to 12, the partition 830 is connected between the rear end of the outer tube 810 and the rear end of the inner tube 820. The stopper 811 is provided at the front end of the outer tube 810.

Further, as shown in fig. 10 to 12, the elastic groove 840 extends from the rear end to the front end of the vent valve attaching seat, and penetrates the clamping portion 812 to divide the clamping portion 812. Further facilitating smooth passage of the clamping portion 812 through the end plate 200.

Further, as shown in fig. 10 to 12, the elastic groove 840 divides at least the chucking portion 812 into 2 segments.

Furthermore, the breather valve mounting seat is of an integrally manufactured structure.

EXAMPLE III

In the first embodiment, when the sealing member mounting structure in the third embodiment is adopted, the solar heat collecting tube 500 can be connected with the end plate 200 through the sliding sealing member, and the air tightness of the inner cavity of the solar heat collecting tube is not damaged while the solar heat collecting tube is rotatably connected with the end plate.

As shown in fig. 4 to 9, a seal mounting structure of the present embodiment includes a seal mount 600, a sliding seal, a solar collecting tube 500, and an end plate 200;

the sealing element mounting seat comprises a first seat body 610 and a second seat body 620 which are matched; a first arc groove 611 is formed at an end of the first seat 610, and the first seat 610 is provided with an insert block 612 having a hook 613 at two sides of the first arc groove 611; a second arc groove 621 is formed at the end of the second seat body 620, and grooves 622 with hook grooves 623 are formed in the second seat body 620 on two sides of the second arc groove 621; when the first seat 610 and the second seat 620 are matched, the insert block 613 is inserted into the groove 622, the hook portion 613 is hooked with the hook groove 623, and the first arc groove 611 and the second arc groove 621 form an annular groove adapted to the sealing element;

the solar heat collecting tube 500 passes through the end plate 200, the sliding sealing member is sleeved on the solar heat collecting tube 500 and is clamped in the annular groove of the sealing member mounting seat 600, and the sealing member mounting seat 600 is fixedly connected with the end plate 200.

Further, the sliding seal is a sliding seal ring 700 or a seal bearing. The solar heat collecting pipe can be rotatably connected with the end plate without damaging the air tightness of the inner cavity of the heat collector.

Further, as shown in fig. 5, the second seat 620 has an elastic cavity 626 disposed below the groove 622 and connected to the groove. The hook portion 613 can be easily hooked with the hook groove 623, and strength is saved.

Further, as shown in fig. 5, the hook portions 613 are disposed at front ends of two side walls of the insertion block 612, and the hook slots 623 are disposed at bottoms of two side walls of the groove 622.

Further, as shown in fig. 4 and fig. 6, a first fixing hole 614 for fixedly mounting the first seat body is disposed on the first seat body 610, and a second fixing hole 624 for fixedly mounting the second seat body is disposed on the second seat body 620. Facilitating the securing of the seal mount to the end plate 200. The first fixing hole 614 and the second fixing hole 624 are both U-shaped holes.

Further, as shown in fig. 4 to 6 and 9, a side surface of the first fastening structure 610 has a first half flange 615, a side surface of the second fastening structure 620 has a second half flange 625, and when the first fastening structure 610 and the second fastening structure 620 are mated, the first half flange 615 and the second half flange 625 form a flange for inserting into the end plate 200. The flange may be inserted into a hole of the end plate 200 so that the seal mount can be more reliably connected with the end plate 200.

Further, the first seat 610 is an integrally formed structure, and the second seat 620 is an integrally formed structure.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an improved generation's spotlight type solar collector which characterized in that: including solar energy collection pipe (500) and heat collector body, the heat collector body includes that the inner wall has reflecting plate (100) of reflection of light face, and the both ends of reflecting plate are equipped with end plate (200), and the top of reflecting plate (100) and both ends plate (200) is equipped with transparent apron (300) and forms heat collector inner chamber (310), solar energy collection pipe (500) are located heat collector inner chamber (310), and its both ends link to each other with both ends plate (200) respectively.

2. An improved concentrating solar collector as claimed in claim 1, wherein: the reflecting surface of the reflecting plate (100) is in a groove-shaped paraboloid shape, the reflecting plate can focus and reflect sunlight on a focal line, and the solar heat collecting pipe (500) is positioned on the focal line.

3. An improved concentrating solar collector as claimed in claim 1, wherein: the wall surfaces of the two end plates (200) opposite to each other are also provided with light reflecting surfaces.

4. An improved concentrating solar collector as claimed in claim 1, wherein: between the two end plates (200), the reflecting plate (100) is provided with a plurality of supporting rods (400) for supporting the solar heat collecting pipes (500).

5. An improved concentrating solar collector as claimed in claim 1, wherein: the inner cavity (310) of the heat collector is a closed cavity.

6. An improved concentrating solar collector as claimed in claim 5, wherein: the heat collector body is provided with a ventilation mechanism which is used for keeping the pressure balance between the inner cavity (310) of the heat collector and the outside.

7. An improved concentrating solar collector as claimed in claim 6, wherein: the ventilation mechanism is a ventilation valve (1000) assembled on the end plate (200).

8. An improved concentrating solar collector as claimed in claim 1 or 5, wherein: the solar heat collecting pipe (500) is rotatably connected with the two end plates (200), and when the heat collector body rotates around the axis of the solar heat collecting pipe, the solar heat collecting pipe can keep static.

9. An improved concentrating solar collector as claimed in claim 8, wherein: the solar heat collecting pipe (500) is connected with the end plate (200) through a sliding sealing piece, so that the solar heat collecting pipe can be rotatably connected with the end plate, and meanwhile, the air tightness of the inner cavity of the heat collector is not damaged.

10. An improved concentrating solar collector as claimed in claim 1, wherein: the solar heat collecting pipes (500) are fixedly connected with the two end plates (200), and when the heat collector body rotates around the axis of the solar heat collecting pipes, the solar heat collecting pipes rotate along with the heat collector body.

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