Guide structure for fused salt pipeline of solar power station
By designing a melting salt pipeline orientation structure for solar power stations, using corner steel, groove steel, accompanying heatline and thermal insulation layer, the problem of excessive heat dissipation loss of the melting salt pipeline -oriented attachment electricity is too large. The warm -up pipeline improves the safety and efficiency of the system.
Patent Information
- Application Number
- CN202421109660.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The electrical heat tracing and heat dissipation loss of molten salt pipeline guide accessories in existing solar photothermal power plants is too large, resulting in the inability to preheat molten salt pipelines within the specified time.
Design a guided structure for the melting salt pipeline for solar power stations. Through four corner steel and four slot steel to form a rectangular frame structure, fix the salt salt pipeline, and set the heatline and thermal insulation layer on the surface of the pipeline to reduce the calories Loss and preheating time.
Effectively reduce the heat loss of the melting salt pipeline and the guidance structure, ensure the start time of solar optical heat power generation, and improve the safety and efficiency of the system.
Smart Images
Figure CN222417997U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar thermal power generation and molten salt energy storage, in particular to a guide structure for a molten salt pipeline of a solar power station. Background Art
[0002] After the "carbon peak and carbon neutrality" was proposed, the large-scale grid connection of unstable new energy sources such as photovoltaics and wind power has become an inevitable trend, which is bound to have an impact on the power grid. As a new type of solar power generation, solar thermal power generation has stable power generation through its own heat storage system. In theory, it can achieve 24-hour continuous power generation. It is one of the power generation methods closest to thermal power. Therefore, the National Development and Reform Commission and the Energy Bureau encourage areas with good sunlight conditions such as the west to use solar thermal power generation as peak-shaving power sources.
[0003] At present, commercial solar thermal power plants mostly use molten salt as a heat transfer medium. The molten salt stored in the cold salt tank flows through a pipeline into the absorber at the top of the tower, converting solar radiation into its own thermal energy through convection and heat conduction. The heated high-temperature molten salt will first flow back to the hot salt tank for storage. The molten salt in the hot salt tank will be sent to the heat exchange system to exchange heat with water / steam to generate high-temperature and high-pressure steam to drive the steam turbine to generate electricity. The temperature of the molten salt after heat exchange is reduced and it flows back to the cold salt tank to be heated again.
[0004] Molten salt pipelines are like the "blood vessels" of solar thermal power stations, connecting various devices in series. Their operational reliability is directly related to the light-to-electricity conversion efficiency of solar thermal power stations. However, the current molten salt pipelines have the problem that the heat dissipation loss of the guide accessories is too large and the molten salt pipeline cannot be preheated within the specified time. Utility Model Content
[0005] In order to solve the problem mentioned above that the electric heating heat dissipation loss of the molten salt pipeline guide accessories is too large to preheat the molten salt pipeline within the specified time, the utility model hereby proposes a guide structure for the molten salt pipeline of a solar power station. The utility model ensures the safety and stability of the molten salt pipeline system, not only meets the mechanical requirements of the molten salt pipeline guide, but also facilitates the layout of the electric heating line, saves the electric heating power and meets the requirements of preheating the molten salt pipeline within the specified time.
[0006] The utility model proposes a guide structure for a molten salt pipeline of a solar power station, which specifically comprises four angle steels and four channel steels. Four angle steels are evenly arranged on the circumference of the surface of the molten salt pipeline; four channel steels are arranged around the molten salt pipeline, and the four channel steels are connected in pairs to form a rectangular frame structure; the angle steels are connected to the channel steels.
[0007] Furthermore, a plurality of expansion joints are arranged on the angle steel.
[0008] Furthermore, a plurality of steel plates are arranged on the angle steel, one end of the steel plate is connected to the angle steel, and the other end is connected to the molten salt pipeline.
[0009] Furthermore, a plurality of heating wires are arranged on the surface of the molten salt pipeline.
[0010] Furthermore, a thermal insulation layer is provided on the surface of the molten salt pipeline.
[0011] The beneficial effects of the guide structure for the molten salt pipeline of a solar power station described in the utility model are:
[0012] (1) The guide structure for the molten salt pipeline of a solar power station described in the utility model overcomes the problem that the heat dissipation loss of the electric heat tracing of the molten salt pipeline guide accessories is too large to preheat the molten salt pipeline within the specified time. The molten salt pipeline is fixed by a plurality of angle steels, a plurality of steel plates and a plurality of channel steels, thereby ensuring the fixing effect while reducing the contact with the molten salt pipeline, reducing heat loss, ensuring the start-up time of the solar thermal power station, and improving the safety and efficiency of the solar thermal power station;
[0013] (2) The utility model discloses a guide structure for a molten salt pipeline in a solar power station, wherein the molten salt pipeline is preheated by a heating wire arranged on the surface of the molten salt pipeline, and the surrounding of the guide structure is insulated by an insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0015] In the attached picture:
[0016] Figure 1 It is a cross-sectional view of a guide structure for a molten salt pipeline of a solar power station described in the utility model;
[0017] Figure 2 It is a top view of a guide structure for a molten salt pipeline of a solar power station described in the utility model;
[0018] Figure 3 It is an enlarged view of a guide structure for a molten salt pipeline in a solar power station described in the utility model at position I;
[0019] Figure 4 This is a schematic diagram of the connection structure of angle steel and steel plate used in the guide structure of the molten salt pipeline of a solar power station described in the utility model;
[0020] Among them: 1-angle steel, 2-steel plate, 3-channel steel, 4-molten salt pipeline, 5-insulation layer, 6-heating wire, 7-expansion joint, 8-rooting beam. DETAILED DESCRIPTION
[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:
[0022] Specific implementation method 1: See Figure 1-Figure 4 The present embodiment is described in detail. The guide structure for the molten salt pipeline of a solar power station described in the present embodiment specifically includes four angle steels 1 and four channel steels 3. Four angle steels 1 are evenly arranged on the circumference of the surface of the molten salt pipeline 4; four channel steels 3 are arranged around the molten salt pipeline 4, and the four channel steels 3 are connected in pairs to form a rectangular frame structure; the angle steel 1 is an L-shaped structure, and the short sides of the L-shaped structures of the four angle steels 1 are respectively connected to a channel steel 3, and the ends of the long sides of the L-shaped structures are connected to the molten salt pipeline 4.
[0023] A plurality of expansion joints 7 are provided at the positions where the angle steel 1 and the molten salt pipeline 4 are connected, and the plurality of expansion joints 7 are used to prevent the angle steel 1 and the molten salt pipeline 4 from being deformed during welding.
[0024] The angle steel 1 is provided with a plurality of steel plates 2, one end of the steel plate 2 is connected to the angle steel 1, and the other end is connected to the molten salt pipeline 4; the upper end of the steel plate 2 is an arc structure to ensure the fit between the upper end of the steel plate 2 and the molten salt pipeline 4; the lower end side of the steel plate 2 is closely fitted to the angle steel 1, and a certain gap is left between the upper end side of the steel plate 2 and the angle steel 1, such as Figure 3 shown.
[0025] A plurality of heating wires 6 are arranged on the surface of the molten salt pipeline 4 , and the molten salt pipeline 4 is preheated by the plurality of heating wires 6 .
[0026] The surface of the molten salt pipeline 4 is provided with a heat-insulating layer 5, and the heat-insulating layer 5 is used to insulate the molten salt pipeline 4 to reduce heat loss.
[0027] To summarize the above implementation cases, the guide structure for the molten salt pipeline of a solar power station described in the utility model overcomes the problem that the heat dissipation loss of the electric heating guide accessories of the molten salt pipeline is too large and cannot preheat the molten salt pipeline within the specified time. The molten salt pipeline 4 is fixed by a plurality of angle steels 1, a plurality of steel plates 2 and a plurality of channel steels 3. While ensuring the fixing effect, the contact with the molten salt pipeline 4 is reduced, the heat loss is reduced, the start-up time of the solar thermal power station is ensured, and the safety and efficiency of the solar thermal power station are improved; the guide structure for the molten salt pipeline of a solar power station described in the utility model preheats the molten salt pipeline 4 by a heating wire 6 arranged on the surface of the molten salt pipeline 4, and insulates the surrounding area of the guide structure by an insulation layer 5.
[0028] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the utility model. It can also be a reasonable combination of the features recorded in the above implementation methods. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A guide structure for a molten salt pipeline in a solar power station, characterized in that: It comprises four angle steels (1) and four channel steels (3); the four angle steels (1) are evenly arranged on the circumference of the surface of a molten salt pipeline (4); four channel steels (3) are arranged around the molten salt pipeline (4); the four channel steels (3) are connected in pairs to form a rectangular frame structure; the angle steels (1) and the channel steels (3) are connected.
2. The guide structure for the molten salt pipeline of a solar power station according to claim 1, characterized in that: The angle steel (1) is provided with a plurality of expansion joints (7).
3. The guide structure for the molten salt pipeline of a solar power station according to claim 1 or 2, characterized in that: A plurality of steel plates (2) are arranged on the angle steel (1); one end of the steel plate (2) is connected to the angle steel (1) and the other end is connected to the molten salt pipeline (4).
4. The guide structure for the molten salt pipeline of a solar power station according to claim 1, characterized in that: A plurality of heating wires (6) are arranged on the surface of the molten salt pipeline (4).
5. The guide structure for the molten salt pipeline of a solar power station according to claim 1, characterized in that: The surface of the molten salt pipeline (4) is provided with a thermal insulation layer (5).