Solar power heating device for heating overhead pipeline

Abstract

The application provides a solar power heating device for a heating overhead pipeline, which comprises an outer protective tube arranged outside the heating overhead pipeline, a plurality of sliding assembly mounting plates fixedly arranged outside the outer protective tube, a plurality of sliding assemblies movably mounted on each sliding assembly mounting plate, the plurality of sliding assemblies symmetrically arranged on both sides of the outer protective tube in pairs, and an arc-shaped solar panel fixedly arranged outside the plurality of sliding assemblies on the same side; a solar panel protection shell is fixedly mounted on the lower half of the outer protective tube, and the space between the solar panel protection shell and the lower half of the outer protective tube is a solar panel protection compartment. The arc-shaped solar panel is movably arranged outside the heating overhead pipeline through the sliding assembly. When encountering severe weather, the sliding assembly drives the arc-shaped solar panel to move, so that the arc-shaped solar panel is recycled into the solar panel protection shell for protection, and the core component for power generation is prevented from being damaged, thereby prolonging the service life of the device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of solar heating, and relates to a solar power generation and heating device, in particular to a solar power generation and heating device for heating overhead pipelines. BACKGROUND

[0002] In the field of renewable energy solar energy, the application of photothermal and photovoltaic is a hot project in recent years, and solar power generation has formed a normative system in the research process of several decades; overhead laying is a pipeline laying method commonly used in urban fringe, residential building-free areas and industrial plant areas. When the solar power generation device is combined with overhead laying, the main problems are as follows:

[0003] First, the efficiency of solar power generation is not very high, and on this basis, compared with direct burial or trench laying, the heat loss of overhead laying is higher, so after the solar power generation device is combined with overhead laying, the expected power generation efficiency will be further reduced.

[0004] Second, the weather conditions in urban fringe, residential building-free areas and industrial plant areas are complex, and if the solar power generation device is exposed to the natural environment for a long time, it is easy to be damaged, reducing the service life of the device.

[0005] Third, in actual construction, sometimes it needs to pass through rivers, roads and complex terrain such as mountain tunnels, and due to the long distance of transportation, a large amount of site needs to be occupied when the solar power generation device is laid; however, due to the large terrain difference of the complex terrain area, the ground is uneven and rugged, so it is difficult to meet the demand of the solar power generation device laying for the site.

[0006] Fourth, different specifications of heating pipes have different sizes of outer diameter of outer protective pipes, and when the solar power generation device is laid on the outer protective pipe, the size of the device needs to be changed according to the outer diameter of the outer protective pipe, and if multiple solar power generation devices of different sizes are made, it will cause inconvenience in construction. SUMMARY

[0007] In view of the deficiencies in the prior art, the purpose of the present application is to provide a solar power generation and heating device for heating overhead pipelines, which solves the technical problems of high heat loss and easy damage of the solar power generation device in the prior art.

[0008] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0009] The utility model provides a kind of solar power generation heating device for heating overhead pipeline, including coaxially arranged in the outer protective tube outside heating overhead pipeline, the outer protective tube outside fixedly arranged with multiple sliding assembly mounting plate, multiple sliding assembly mounting plate two two symmetrical distribution in the two sides of outer protective tube;Each sliding assembly mounting plate can movably install multiple sliding assembly, multiple sliding assembly two two symmetrical distribution in the two sides of outer protective tube, multiple sliding assembly outside located in the same side are fixedly provided with an arc solar panel;The lower half of the outer protective tube outside fixedly installed with solar panel protection shell, the space between solar panel protection shell and the lower half of outer protective tube is solar panel protection storehouse.

[0010] The sliding assembly mounting plate includes a sliding assembly mounting plate body, a power wheel track is formed in the middle position of the sliding assembly mounting plate body, there is a gap between the axial two ends of the sliding assembly mounting plate body and the upper half of the outer protective tube, and the axial two ends of the sliding assembly mounting plate body are sliding rails.

[0011] The sliding assembly includes a pair of mounting beams, each mounting beam is fixedly provided with a sliding block, the sliding block is movably clamped on the sliding rail, each sliding block is fixedly provided with a support block on the mounting beam at each end, and the mounting beam and the support block are in contact with the inner surface of the arc-shaped solar panel. A power wheel mounting shaft is fixedly arranged in the two adjacent support blocks in the axial direction, a power wheel is movably mounted on the power wheel mounting shaft, and the power wheel is arranged in the power wheel track.

[0012] The sliding block can move along the circumferential direction of the outer protective tube on the sliding rail, the power wheel can move along the circumferential direction of the outer protective tube in the power wheel track, and the arc-shaped solar panel can enter the solar panel protection storehouse under the driving of the sliding assembly.

[0013] The utility model also has the following technical features:

[0014] Specifically, the arc-shaped solar panel includes multiple solar cell panels, the multiple solar cell panels are connected by solar panel connecting strips, the inner surface of the solar panel connecting strip is in contact with the support block, each arc-shaped solar panel is fixedly provided with an electromagnet on the inner side, the two electromagnets on the inner sides of the pair of arc-shaped solar panels can be in contact with each other, and each arc-shaped solar panel is fixedly provided with a buffer block on the outer side, and the two buffer blocks on the outer sides of the pair of arc-shaped solar panels can be in contact with each other.

[0015] Specifically, the solar panel protection shell includes a solar panel protection shell mounting seat fixedly arranged on the outer protective tube, the radial inner end of a solar panel protection shell support rod is detachably mounted in the solar panel protection shell mounting seat, and the radial outer end of the solar panel protection shell support rod is fixedly connected with a solar panel protection plate. The two ends of the solar panel protection plate are respectively provided with an electromagnet fixing strip.

[0016] Specifically, the solar panel protection shell support rod is covered with a sealing cover plate.

[0017] Specifically, the axial two ends of the arc-shaped solar panel are respectively fixedly provided with a baffle.

[0018] Specifically, the outer protective pipe is provided with a heat preservation layer.

[0019] Specifically, a pair of electric heating plates are arranged between the heat supply overhead pipeline and the heat preservation layer.

[0020] Specifically, a motor is arranged between the adjacent sliding assemblies in the axial direction.

[0021] Specifically, the device further comprises a control box support table fixedly arranged on the outer protective pipe, and a control box is fixedly arranged on the control box support table.

[0022] Optionally, the outer protective pipe is formed by splicing two semicircular arc-shaped structure pipe bodies, and an upper closing block and a lower closing block are respectively fixedly arranged on the axial two ends of each semicircular arc-shaped structure pipe body.

[0023] Compared with the prior art, the present application has the following technical effects:

[0024] (I) The solar power generation and heating device for the heat supply overhead pipeline of the present application adopts sliding assemblies to movably arrange arc-shaped solar panels outside the heat supply overhead pipeline. When encountering severe weather, the sliding assemblies drive the arc-shaped solar panels to move, so that the arc-shaped solar panels are recovered into the solar panel protection shell for protection. Through the above process, not only the heat loss of the solar power generation and heating device is reduced, the power generation efficiency is improved, but also the core components for power generation are prevented from being damaged, and the service life of the device is improved.

[0025] (II) The solar power generation and heating device for the heat supply overhead pipeline of the present application can form a sealing structure between the baffle and the outer protective pipe or the sealing cover plate whether the arc-shaped solar panel is in a working state or a non-working state, further preventing the core components for power generation from being damaged.

[0026] (III) The solar power generation and heating device for the heat supply overhead pipeline of the present application has a small occupied area when the arc-shaped solar panel is laid, and only one circle of thickness is added outside the ordinary overhead pipeline section to realize it; the device has strong applicability, and can fully utilize solar energy resources for long-distance pipelines on highland snowfields or boundless plains, large-diameter heat supply water pipes in suburbs or urban areas.

[0027] (IV) The solar power generation heating device for the heating overhead pipeline of the application, wherein the control box is connected with the existing environmental network system, when the environmental network system warns that natural disasters such as strong wind, sand raising, rainstorm and the like may occur, the control box starts the motor to store the arc-shaped solar panel into the solar panel protection shell for protection; when the weather is fine, the motor is started to support the arc-shaped solar panel on the pipeline to generate electricity, thereby realizing the intelligentization of electricity storage, electricity discharge and the lifting of the solar power generation device.

[0028] (V) The solar power generation heating device for the heating overhead pipeline of the application, which is designed and prefabricated in units with the size of a single solar panel as a unit size for different specifications of outer protective pipes, thereby improving the convenience in later laying. The sliding assembly mounting plate, the solar panel protection shell mounting seat, the upper closing block, the lower closing block and other parts are prefabricated on the outer surface of the outer protective pipe, thereby improving the convenience of mounting the sliding assembly and the solar panel protection shell, and further improving the convenience of overall installation and disassembly of the device.

[0029] (VI) The solar power generation heating device for the heating overhead pipeline of the application, which is designed with two heat preservation structures of "prefabricated type" and "direct assembly type", wherein the "prefabricated type" heat preservation structure is for the pipeline without laying the heat preservation structure, and the "direct assembly type" heat preservation structure is for the pipeline with the heat preservation structure laid, thereby improving the applicability.

[0030] (VII) The solar power generation heating device for the heating overhead pipeline of the application, which has strong power generation pertinence, and most of the electricity can be used to heat the water in the heating overhead pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the solar power generation heating device for the heating overhead pipeline.

[0032] Figure 2 It is a top view of the solar power generation heating device for the heating overhead pipeline.

[0033] Figure 3 It is a side view of the solar power generation heating device for the heating overhead pipeline.

[0034] Figure 4 It is a side view of the solar power generation heating device for the heating overhead pipeline (the inside is visible).

[0035] Figure 5 It is a schematic diagram of the structure of the arc-shaped solar panel in the working state.

[0036] Figure 6 It is a schematic diagram of the structure of the arc-shaped solar panel in the non-working state.

[0037] Figure 7 Structure diagram of sliding assembly mounting plate.

[0038] Figure 8 Structure diagram of sliding assembly.

[0039] Figure 9 Structure diagram of solar panel protection shell.

[0040] Figure 10 Front view of solar panel protection shell.

[0041] Figure 11 Arrangement diagram of multiple arc-shaped solar panels on heating overhead pipeline.

[0042] Figure 12 Structure diagram of outer protective pipe with "just-assembled" thermal insulation structure.

[0043] Figure 13 Side view of solar power generation and heating device for heating overhead pipeline with "just-assembled" thermal insulation structure.

[0044] Figure 14 Front view of solar power generation and heating device for heating overhead pipeline with "just-assembled" thermal insulation structure.

[0045] The meanings of the respective reference numbers in the drawings are as follows: 1 - outer protective pipe, 2 - sliding assembly mounting plate, 3 - sliding assembly, 4 - arc-shaped solar panel, 5 - solar panel protection shell, 6 - solar panel protection bin, 7 - baffle, 8 - thermal insulation layer, 9 - electric heating plate, 10 - upper closing block, 11 - lower closing block, 12 - motor, 13 - control box support table, 14 - control box, 15 - heating overhead pipeline;

[0046] 201 - main body of sliding assembly mounting plate, 202 - track of power wheel, 203 - sliding rail;

[0047] 301 - mounting beam, 302 - sliding block, 303 - support block, 304 - mounting shaft of power wheel, 305 - power wheel;

[0048] 401 - connecting strip of solar panel, 402 - solar cell panel, 403 - electromagnet, 404 - buffer block;

[0049] 501 - mounting seat of solar panel protection shell, 502 - support rod of solar panel protection shell, 503 - protection plate of solar panel, 504 - fixing strip of electromagnet, 505 - sealing cover plate.

[0050] The specific content of the present application is further explained and described in detail in connection with the following embodiments. DETAILED DESCRIPTION

[0051] It should be noted that all the components in the present application, in the absence of special instructions, adopt the components known in the art, for example, the solar panel 402 adopts the monocrystalline silicon solar panel known in the prior art.

[0052] The specific embodiments of the present application are given below, it should be noted that the present application is not limited to the following specific embodiments, and any equivalent variations made on the basis of the technical solutions of the present application fall within the protection scope of the present application.

[0053] Embodiment 1:

[0054] The present embodiment gives a solar power heating device for heating overhead pipeline, as shown in Figures 1 to 6 The outer protective tube 1 is coaxially arranged outside the heating overhead pipeline 15, a plurality of sliding assembly mounting plates 2 are fixedly arranged outside the outer protective tube 1, and the plurality of sliding assembly mounting plates 2 are symmetrically distributed on both sides of the outer protective tube 1; a plurality of sliding assemblies 3 are movably mounted on each sliding assembly mounting plate 2, the plurality of sliding assemblies 3 are symmetrically distributed on both sides of the outer protective tube 1, and an arc-shaped solar panel 4 is fixedly arranged outside the plurality of sliding assemblies 3 on the same side; a solar panel protection shell 5 is fixedly mounted outside the lower half of the outer protective tube 1, and the space between the solar panel protection shell 5 and the lower half of the outer protective tube 1 is a solar panel protection compartment 6.

[0055] As shown in Figure 7 The sliding assembly mounting plate 2 includes a sliding assembly mounting plate body 201, a power wheel track 202 is formed in the middle position of the sliding assembly mounting plate body 201, there is a gap between the axial two ends of the sliding assembly mounting plate body 201 and the upper half of the outer protective tube 1, and the axial two ends of the sliding assembly mounting plate body 201 are sliding rails 203.

[0056] As shown in Figure 8 The sliding assembly 3 includes a pair of mounting beams 301, a sliding block 302 is fixedly arranged on each mounting beam 301, and the sliding block 302 is movably clamped on the sliding rail 203; a support block 303 is fixedly arranged on the mounting beam 301 at the two ends of each sliding block 302, and the mounting beam 301 and the support block 303 are in contact with the inner surface of the arc-shaped solar panel 4; a power wheel mounting shaft 304 is fixedly arranged in the two adjacent support blocks 303 in the axial direction, a power wheel 305 is movably mounted on the power wheel mounting shaft 304, and the power wheel 305 is arranged in the power wheel track 202.

[0057] The sliding block 302 can move along the circumferential direction of the outer protective tube 1 on the sliding rail 203, the power wheel 305 can move along the circumferential direction of the outer protective tube 1 in the power wheel track 202, and the arc-shaped solar panel 4 can be driven by the sliding assembly 3 to enter the solar panel protection compartment 6.

[0058] In this embodiment, the sliding assembly mounting plate body 201 on both sides of the power wheel track 202 can limit the power wheel 305.

[0059] In this embodiment, the sliding block 302 is clamped on the sliding rail 203, which can further limit the displacement of the sliding assembly 3; the structure composed of the mounting beam 301, the support block 303 and the power wheel mounting shaft 304 can not only be used for installing the power wheel 305, but also can support the arc-shaped solar panel 4.

[0060] As a specific scheme of this embodiment, as shown in Figure 5 and Figure 6 , the arc-shaped solar panel 4 includes a plurality of solar cell panels 402, which are connected by solar panel connecting strips 401, the inner surfaces of the solar panel connecting strips 401 are in contact with the support blocks 303; each arc-shaped solar panel 4 is fixedly provided with an electromagnet 403 on the inner side, and the two electromagnets 403 on the inner sides of a pair of arc-shaped solar panels 4 can be in contact with each other; each arc-shaped solar panel 4 is fixedly provided with a buffer block 404 on the outer side, and the two buffer blocks 404 on the outer sides of a pair of arc-shaped solar panels 4 can be in contact with each other.

[0061] In this embodiment, since the laying mode of the solar cell panel 402 is along the external arc, the solar panel connecting strip 401 is needed for fixing and connecting, which is not only connected between the solar cell panels 402, but also fixed and connected with the electromagnets 403 and the buffer blocks 404. The solar panel connecting strip 401 is made of a conventional soft material known in the prior art, such as rubber.

[0062] In this embodiment, when the arc-shaped solar panel 4 is in a working state, the electromagnet 403 can keep the arc-shaped solar panel 4 stable at the top of the outer protective tube 1. When the arc-shaped solar panel 4 is in a non-working state, after the arc-shaped solar panel 4 moves circumferentially and gradually approaches and contacts, the buffer block 404 can play a buffering role. The buffer block 404 is made of a conventional soft material known in the prior art, such as rubber.

[0063] As a specific scheme of this embodiment, as shown in Figure 9 and Figure 10 , the solar panel protection shell 5 includes a solar panel protection shell mounting seat 501 fixedly provided on the outer protective tube 1, the radial inner end of a solar panel protection shell support rod 502 is detachably installed in the solar panel protection shell mounting seat 501, and the radial outer end of the solar panel protection shell support rod 502 is fixedly connected with a solar panel protection plate 503; each end of the solar panel protection plate 503 is provided with an electromagnet fixing strip 504.

[0064] In this embodiment, the solar panel protection plate 503 is made of conventional metal materials known in the prior art; the bottom of the solar panel protection plate 503 is provided with a leakage hole (not shown in the figure), which can quickly drain rainwater outside the device in rainy days.

[0065] In this embodiment, the electromagnet fixing strip 504 is made of iron material. When the arc-shaped solar panel 4 is stored in the solar panel protection bin 6, the electromagnet 403 is energized, and the electromagnet 403 can be firmly attracted to the electromagnet fixing strip 504, so that the arc-shaped solar panel 4 remains stable in the solar panel protection bin 6.

[0066] As a specific solution of this embodiment, as shown in Figure 9 The solar panel protection shell support rod 502 is covered with a sealing cover plate 505. The sealing cover plate 505 is made of conventional metal materials known in the prior art.

[0067] As a specific solution of this embodiment, as shown in Figure 1 The axial ends of the arc-shaped solar panel 4 are respectively fixedly provided with a baffle 7.

[0068] In this embodiment, when the arc-shaped solar panel 4 is in a working state, the baffle 7 and the outer protective pipe 1 jointly form a sealing structure, which can prevent fine sand and gravel from entering the inside of the arc-shaped solar panel 4 and causing damage to the device. When the arc-shaped solar panel 4 is in a non-working state, the baffle 7 and the sealing cover plate 505 jointly form a sealing structure, which can prevent fine sand and gravel from entering the inside of the solar panel protection bin 6 and causing damage to the device.

[0069] As a specific solution of this embodiment, as shown in Figure 1 The outer protective pipe 1 is provided with a thermal insulation layer 8.

[0070] In this embodiment, the thermal insulation layer 8 is a conventional polyurethane thermal insulation layer known in the prior art, which is used for thermal insulation of the heat supply overhead pipeline.

[0071] In this embodiment, the outer protective pipe 1 and the thermal insulation layer 8 jointly form a "prefabricated" thermal insulation structure, which is designed for heat supply overhead pipelines that have not yet been laid with thermal insulation structures.

[0072] As a specific solution of this embodiment, as shown in Figure 1 A pair of electric heating plates 9 are arranged between the heat supply overhead pipeline 15 and the thermal insulation layer 8.

[0073] In this embodiment, the electric heating plate 9 is used to heat the medium inside the heat supply overhead pipeline 15, and the thickness of the electric heating plate 9 is designed according to the actual situation.

[0074] As a specific solution of this embodiment, as shown in Figure 4As shown, a motor 12 is provided between adjacent sliding components 3 in the axial direction, and the motor 12 is used to drive the power wheel mounting shaft 304.

[0075] As one specific solution in this embodiment, such as Figure 1 As shown, the device also includes a control box support platform 13 fixedly mounted on the outer protective tube 1, and a control box 14 is fixedly mounted on the control box support platform 13.

[0076] In this embodiment, the bottom of the control box support platform 13 is raised around its perimeter to prevent the control box 14 from falling. Each control box 14 is an independent unit capable of networking with the base station in its environment. The internal components of the control box 14 include a photovoltaic controller and a battery, enabling the collection of electricity generated by the arc-shaped solar panel 4, as well as the control of the electric heating plate 9 and the sliding assembly 3. Figure 3 As shown, when the weather is fine, the control box 14 will start the motor 12, which will mount the arc-shaped solar panel 4 on the heating overhead pipe 15 to generate electricity; as Figure 4 As shown, when potential natural disasters such as strong winds and blowing sand are detected, the control box 14 starts the motor 12 to retract the arc-shaped solar panel 4 into the solar panel protection chamber 6 for protection.

[0077] As an optional solution in this embodiment, such as Figure 11 As shown, depending on the length of the pipeline and actual needs, multiple arc-shaped solar panels 4 and solar panel protective shells 5 can be laid on the heating overhead pipeline 15.

[0078] Example 2:

[0079] This embodiment provides a solar power generation heating device for overhead heating pipelines. The device has a basically the same structure as that in Embodiment 1, the difference being: [The following text appears to be a separate, unrelated section:] Figures 12 to 14 As shown, the outer protective tube 1 is composed of two semi-circular arc-shaped structural tubes spliced ​​together. Each semi-circular arc-shaped structural tube has an upper closing block 10 and a lower closing block 11 fixedly installed at both ends of its axial direction.

[0080] In this embodiment, the upper closing blocks 10 located on the two semi-circular arc-shaped pipe bodies are detachably connected by bolts, and the lower closing blocks 11 located on the two semi-circular arc-shaped pipe bodies are detachably connected by bolts. The upper closing blocks 10, lower closing blocks 11, outer protective pipe 1, and insulation layer 8 together form an "instant-fit" insulation structure. For some existing overhead heating pipelines 15, since they are already in operation, the original insulation layer on the outer surface of the overhead heating pipeline 15 can be removed, and the overhead heating pipeline 15 can be re-laid using the "instant-fit" insulation structure.

[0081] The installation and operation process of this invention is as follows:

[0082] First, the sliding assembly mounting plate 2, the solar panel protective shell mounting seat 501, the upper closure block 10 and the lower closure block 11 are prefabricated on the outer surface of the outer protective pipe 1, and then the electric heating plate 9, the heat preservation layer 8 and the prefabricated outer protective pipe 1 are sequentially installed on the heat supply overhead pipeline 15.

[0083] Second, the solar panel protective shell 5 is installed outside the outer protective pipe 1, the solar panel protective shell support rod 502 is fixedly connected with the solar panel protective plate 503 in advance, the solar panel protective shell support rod 502 is inserted from the bottom of the solar panel protective shell mounting seat 501 upwards during installation, and then is fixed by bolts, and finally a sealing cover plate 505 is covered on the top.

[0084] Third, after the sliding assembly 3 is installed on the sliding assembly mounting plate 2, the motor 12 is installed, and then the arc-shaped solar panel 4 is laid.

[0085] Fourth, the control box support table 13 and the control box 14 are installed outside the outer protective pipe 1.

[0086] Fifth, when the weather is fine, the motor 12 is started through the control box 14, the arc-shaped solar panel 4 is erected on the heat supply overhead pipeline 15 to generate electricity, electricity is generated through the top solar cell panel 402, part of the electricity is stored in the storage battery of the control box 14, and the other part of the electricity is released in a direct current mode, enters the electric heating plate 9 and heats the water in the heat supply overhead pipeline 15, and the water is heated after absorbing heat.

[0087] Sixth, when it is night, the weather is bad or natural disasters occur, the motor 12 is started through the control box 14, and the arc-shaped solar panel 4 is stored in the solar panel protective shell 5.

[0088] Effect verification:

[0089] The actual operation of the solar power generation and heating device is calculated by taking a solar energy rich area as an example. The solar energy rich area is the capital of Tibet Autonomous Region, Lhasa, with the coordinate of latitude 29°41'N and longitude 91°1'E. After collecting the monthly average temperature of Lhasa from 1981 to 2010, the highest temperature average value of the heating season is 10.44℃, and the lowest temperature average value of the heating season is -4.98℃.

[0090] The diameter of the heat supply overhead pipeline (15) is DN400, the working steel pipe specification is 426mm*10mm, the outer protective pipe is a color steel tile spiral pipe with a specification of 527mm*0.5mm, the heat preservation material is polyurethane, and the thickness is 50mm. The hot water temperature in the overhead pipeline is 80℃, the pipeline is laid along the north-south direction, the flow rate in the pipeline is 1.13m / s, and the corresponding specific friction resistance is 30.6Pa / m.

[0091] The specific calculation process is as follows:

[0092] (A) Take the monthly average of the highest temperature in Lhasa heating season 10.44℃ as the external atmospheric temperature, the hot water temperature in the pipeline is 80℃, according to the "precast hot water insulation pipe and pipe fittings for overhead and comprehensive pipe gallery" TCDHA1-2019, the maximum value of the thermal conductivity of the insulation material polyurethane is selected 0.033W / (m·k), the maximum value of the thermal conductivity of the outer protective pipe material color steel tile spiral pipe is selected 0.041W / (m·k), the surface heat transfer coefficient between the outer protective pipe shell and the air is selected 10W / (m 2 ·k), ignore the surface heat transfer coefficient of the convective heat transfer between the hot water in the pipe and the pipe wall, ignore the influence of the electric heating plate on the heat conduction, and the formula I, formula II and formula III are used to calculate the outer surface temperature of the insulation pipe when the electric heating plate is not powered on.

[0093] Formula I is as follows:

[0094]

[0095] In the formula:

[0096] k- unit length heat transfer coefficient W / (m·k);

[0097] h2- the surface heat transfer coefficient between the outer protective pipe shell and the air, which is 10W / (m 2 ·k);

[0098] λ1- the thermal conductivity of the insulation material polyurethane, which is 0.033W / (m·k);

[0099] λ2- the thermal conductivity of the color steel tile spiral pipe, which is 0.041W / (m·k);

[0100] d1- the outer diameter of the working steel pipe, which is 426mm, i.e. 0.426m;

[0101] d2- the outer diameter of the insulation layer, which is 526mm, i.e. 0.526m;

[0102] d3- the outer diameter of the outer protective pipe, which is 527mm, i.e. 0.527m;

[0103] The calculation can obtain k=0.22W / (m·k).

[0104] Formula II is as follows:

[0105] q=k(t0-ι f1 ) Formula 11;

[0106] In the formula:

[0107] k- unit length heat transfer coefficient W / (m·k), taking the calculation result 0.22W / (m·k);

[0108] q - heat dissipation, W / m;

[0109] t0 - hot water temperature in the pipe, 80℃;

[0110] t f1 - external atmospheric temperature, taking the average of the highest temperature in Lhasa during the heating season, 10.44℃;

[0111] q = 15.3 W / m.

[0112] Equation III is as follows:

[0113]

[0114] In the equation:

[0115] t w1 - temperature of the outer surface of the heat preservation pipe, ℃;

[0116] t f1 - external atmospheric temperature, taking the average of the highest temperature in Lhasa during the heating season, 10.44℃;

[0117] q - heat dissipation, 15.3 W / m;

[0118] h2 - surface heat transfer coefficient between the outer shell of the heat preservation pipe and air, 10 W / (m 2 ·k);

[0119] d3 - outer diameter of the heat preservation pipe, 527 mm, i.e. 0.527 m;

[0120] t w1 = 11.36℃.

[0121] Similarly, when the average of the lowest temperature in Lhasa during the heating season is -4.9℃, the temperature of the outer surface of the heat preservation pipe t w2 = -3.7℃. Since the higher the temperature, the lower the power generation efficiency, the single crystal silicon as the battery panel in this temperature will not lead to a decrease in efficiency, but rather an increase in efficiency compared to the standard case. However, due to the low temperature, additional consideration is needed for related components such as freezing and cracking.

[0122] (B) Design the pipe section along the north-south direction, and select the solar cell piece with a size of 200 mm diagonal single crystal silicon 156 mm x 156 mm battery piece. According to the calculation results of the above equation, the conversion efficiency can be conservatively estimated to be 25%. The power calculation formula IV of a single battery piece is:

[0123] Power = Conversion efficiency x 1000 x 0.02389503 (w) Equation IV;

[0124] The power of the single crystal silicon cell with a size of 156mm x 156mm is 5.97W.

[0125] (C) The arc-shaped solar panels (4) are laid on the DN400 pipe section, and the interval between adjacent solar panels (402) is 20mm. Each arc-shaped solar panel (4) is provided with 15 solar panels (402), and the azimuth angle and the inclination angle of the solar panels (402) are as follows:

[0126] (1) 5 solar panels, azimuth angle -90°, inclination angle 74°;

[0127] (2) 5 solar panels, azimuth angle -90°, inclination angle 45°;

[0128] (3) 5 solar panels, azimuth angle -90°, inclination angle 16°;

[0129] (4) 5 solar panels, azimuth angle 90°, inclination angle 74°;

[0130] (5) 5 solar panels, azimuth angle 90°, inclination angle 45°;

[0131] (6) 5 solar panels, azimuth angle 90°, inclination angle 16°.

[0132] Both the azimuth angle and the inclination angle will affect the power generation, and the average daily effective illumination time in Lhasa is 8.3 hours. Since the solar panels on both sides are laid towards east and west, it is assumed that the daily illumination time received by both sides is 4.15 hours, the formula V is used for simplifying the calculation, and the power generation of one side of the unit length unit is calculated, and the formula V is as follows:

[0133] Solar panel daily power generation = average daily illumination time x solar panel wattage x 75% x (1-azimuth angle and inclination angle loss) formula V;

[0134] In the formula:

[0135] 75% is a coefficient considering the charging efficiency and the loss in the charging process.

[0136] For case (1), the calculation by the above formula can obtain:

[0137] Solar panel daily power generation = 4.15 x 5 x 5.97 x 75% x (1-28%) = 66.89Wh / d

[0138] In the formula, the azimuth angle and the inclination angle loss is 28%, which is respectively an azimuth angle loss of 8% and an inclination angle loss of 20%

[0139] For case (2), the calculation from the above formula is:

[0140] Solar panel daily power generation = 4.15 x 5 x 5.97 x 75% x (1-11%) = 82.69 Wh / d

[0141] In the formula, the azimuth and tilt angle loss is 11%, of which the azimuth loss is 8% and the tilt angle loss is 3%

[0142] For case (3), the calculation from the above formula is:

[0143] Solar panel daily power generation = 4.15 x 5 x 5.97 x 75% x (1-10%) = 83.62 Wh / d

[0144] In the formula, the azimuth and tilt angle loss is 10%, of which the azimuth loss is 8% and the tilt angle loss is 2%

[0145] One side solar panel daily power generation is 233.2 Wh / d, and the other side solar panel daily power generation is 233.2 Wh / d by symmetry. The unit length solar panel daily power generation is 466.4 Wh / d. This is the daily power generation under the most simplified calculation, which takes into account the loss but does not deeply consider the influence of solar radiation. The actual situation will produce a larger result than this calculation method.

[0146] (D) Take 1 meter as the calculation unit, now calculate how much water can be heated. From the above formula, each meter of solar power generation device can generate and store 466.4 Wh / d in the battery. Take 80% of the heating power for the unit calculation unit per day, which is 373.44 Wh. Considering the existence of line loss and other losses, the loss is taken as 15%, so the real heating is 317.424 Wh. If this part of the heat is used for heating, it is 1.143 x 106J. The heating water heat is calculated by the following formula VI:

[0147] Q = cmΔt Formula VI

[0148] In the formula:

[0149] Q- Heating water heat, take 1.143 x 106J;

[0150] c- Water specific heat capacity at constant pressure, which can be taken as approximately 4200 J / (kg·℃);

[0151] m- The mass of water flow in a day, which is the cross-sectional area s x flow velocity v x density p x 3600 x 24, take 1.269 x 107kg;

[0152] Δt- Temperature change, ℃.

[0153] The calculated Δt is about 0.00002℃, i.e. the water temperature in each meter of the pipe section can be increased by 0.00002℃ in a whole day, considering the particularity of long pipeline, the pipe section is laid for a long length, if 1 km of pipe section uses the device described in the application, the water temperature in the pipe section can be increased by 0.02℃ in a whole day. Compared with the existing heat and power independent distribution system, the temperature drop along the pipeline is 0.1℃ / km, even if half of the heat is lost, only half of the heat is absorbed by the water in the pipe, it can still reduce 0.01℃ on the basis of this temperature drop.

[0154] (E) If the control and storage device is added to the pipeline solar power generation device in units of 10 meters, the 10-meter pipeline can generate 466.4Wh / d x 10 = 4664Wh / d = 4.66KWh / d under the calculation conditions of the above formula, i.e. 4.66 degrees of electricity per day.

[0155] When the storage battery is configured, the shallow cycle discharge is used to have the longest service life, i.e. the daily power consumption is not more than 30%, or the power consumption in continuous rainy days is not more than 50%, so as to achieve the longest service life requirement of the storage battery. If the most unfavorable weather condition is continuous rainy days for 3 days, when 30% of the generated electricity is used to supply the electric heating plate for heating:

[0156] The component power is 5.97 x 30 x 10 = 1791W, the system voltage is selected to be 60V, and the load is 0.37KW, and the peak power of the load is set to be 0.4KW.

[0157] The maximum charging current is 1791÷60 = 29.85A;

[0158] The maximum discharge current is 4000÷60 = 66.67A;

[0159] The discharge depth is calculated as 30%, 4000÷(60 x 30%) = 222.22A;

[0160] According to the specifications, 5 pieces of 12V250Ah storage batteries are selected, and the total capacity is 15 degrees.

Claims

1. A solar power heating device for heating overhead pipeline, comprising an outer protective tube (1) coaxially arranged outside the heating overhead pipeline, characterized in that, The outer protective pipe (1) is externally fixed with a plurality of sliding assembly mounting plates (2), which are symmetrically distributed on both sides of the outer protective pipe (1); a plurality of sliding assemblies (3) are movably mounted on each sliding assembly mounting plate (2), and the plurality of sliding assemblies (3) are symmetrically distributed on both sides of the outer protective pipe (1); one arc-shaped solar panel (4) is externally fixed on the plurality of sliding assemblies (3) on the same side; a solar panel protection shell (5) is externally fixed and mounted on the lower half of the outer protective pipe (1), and the space between the solar panel protection shell (5) and the lower half of the outer protective pipe (1) is a solar panel protection compartment (6); The sliding assembly mounting plate (2) comprises a sliding assembly mounting plate body (201), a power wheel track (202) is formed in the middle position of the sliding assembly mounting plate body (201), and gaps exist between the axial ends of the sliding assembly mounting plate body (201) and the upper half of the outer protective pipe (1); the axial ends of the sliding assembly mounting plate body (201) are sliding rails (203); The sliding assembly (3) comprises a pair of mounting beams (301), one sliding block (302) is fixedly arranged on each mounting beam (301), and the sliding block (302) is movably clamped on the sliding rail (203); one support block (303) is fixedly arranged on the mounting beam (301) at the end of each sliding block (302), and the mounting beam (301) and the support block (303) are in contact with the inner surface of the arc-shaped solar panel (4); a power wheel mounting shaft (304) is fixedly arranged in the two adjacent support blocks (303) in the axial direction, a power wheel (305) is movably mounted on the power wheel mounting shaft (304), and the power wheel (305) is arranged in the power wheel track (202); The sliding block (302) can move along the circumferential direction of the outer protective pipe (1) on the sliding rail (203), the power wheel (305) can move along the circumferential direction of the outer protective pipe (1) in the power wheel track (202), and the arc-shaped solar panel (4) can enter the solar panel protection compartment (6) under the drive of the sliding assembly (3); The outer protective pipe (1) is internally provided with a heat preservation layer (8); A pair of electric heating plates (9) are arranged between the heat supply overhead pipeline and the heat preservation layer (8).

2. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein The arc-shaped solar panel (4) comprises a plurality of solar cell panels (402), the solar cell panels (402) are connected by solar panel connecting strips (401), the inner surface of the solar panel connecting strip (401) is in contact with the support block (303); one electromagnet (403) is fixedly arranged on the inner side of each arc-shaped solar panel (4), the two electromagnets (403) on the inner sides of the pair of arc-shaped solar panels (4) can be in contact with each other, one buffer block (404) is fixedly arranged on the outer side of each arc-shaped solar panel (4), and the two buffer blocks (404) on the outer sides of the pair of arc-shaped solar panels (4) can be in contact with each other.

3. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein The solar panel protection shell (5) comprises a solar panel protection shell mounting seat (501) fixedly arranged on the outer protection pipe (1), a radially inner end of a solar panel protection shell supporting rod (502) is detachably mounted in the solar panel protection shell mounting seat (501), and a radially outer end of the solar panel protection shell supporting rod (502) is fixedly connected with a solar panel protection plate (503); and one electromagnet fixing strip (504) is arranged on each end of the solar panel protection plate (503).

4. The solar power heating apparatus for heating overhead pipes according to claim 3, wherein The solar panel protection shell supporting rod (502) is covered with a sealing cover plate (505).

5. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein The axial two ends of the arc-shaped solar panel (4) are respectively fixedly provided with a baffle (7).

6. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein A motor (12) is arranged between the adjacent sliding assemblies (3) in the axial direction.

7. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein A control box supporting table (13) is fixedly arranged on the outer protection pipe (1), and a control box (14) is fixedly arranged on the control box supporting table (13).

8. The solar power heating apparatus for heating overhead pipes according to claim 1, wherein The outer protection pipe (1) is formed by splicing two half-circular arc-shaped structure pipe bodies, and an upper closing block (10) and a lower closing block (11) are respectively fixedly arranged on the axial two ends of each half-circular arc-shaped structure pipe body.

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