Electric heating single-tank fused salt heat storage and steam generation system

Abstract

The utility model discloses an electric heating single-tank fused salt heat storage and steam generation system, belongs to the technical field of steam generation, and solves the problems that steam is continuously generated after all water is heated, and the steam generation mode often needs to wait for a long period of time for preheating. Comprising a heat preservation tank and a heat exchange pipe vertically arranged in the heat preservation tank, the heat exchange pipe is located at the central axis of the heat preservation tank, the peripheral wall of the heat preservation tank is communicated with a plurality of spraying pipe openings, the central axis of the spraying pipe openings passes through the central axis of the heat preservation tank, and the spraying pipe openings are used for spraying water mist. According to the design, water mist can be comprehensively sprayed to the surface of the high-temperature heat exchange pipe through the spraying pipe opening, instant heat exchange is achieved, sublimation delay caused by contact of a large amount of water and the heat exchange pipe is avoided in the process that the water mist is promoted to quickly sublimate into steam, the steam generation efficiency is effectively improved, and the preheating time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of steam generation technology, and in particular to an electrically heated single-tank molten salt thermal storage steam generation system. Background Technology

[0002] Single-tank molten salt thermal energy storage systems are a highly efficient thermal energy storage technology. They store thermal energy by directly heating molten salt in a single molten salt tank using an electric heater. This simplifies the need for molten salt pumps and electric heat tracing equipment required in traditional two-tank systems, thereby reducing self-consumption of electricity and operational complexity. This system is particularly suitable for small to medium-scale steam demand, storing energy during periods of low electricity costs and then generating steam through heat exchange between molten salt and water when needed for heating or industrial processes.

[0003] When producing steam in a single-tank molten salt thermal storage system, a large amount of water is typically brought into contact with the molten salt heat exchanger to exchange heat between the water and the heat exchanger, thereby heating the water to form steam. However, when the molten salt heat exchanger is in contact with a large amount of water, because the large amount of water can carry a large amount of heat, all the water is usually heated before steam is continuously generated. This method of steam generation often requires a relatively long period of preheating before it can proceed.

[0004] Therefore, an electrically heated single-tank molten salt thermal storage and steam generation system is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electrically heated single-tank molten salt thermal storage and steam generation system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An electrically heated single-tank molten salt thermal storage and steam generation system includes an insulated tank and a heat exchange tube arranged vertically therein. The heat exchange tube is located at the central axis of the insulated tank, and a plurality of spray nozzles are connected to the outer peripheral wall of the insulated tank. The central axis of the plurality of spray nozzles passes through the central axis of the insulated tank, and the spray nozzles are used to spray water mist.

[0008] Preferably, the heat exchange tube is spiral-shaped, and there is a gap between each turn of the heat exchange tube.

[0009] Preferably, the distance between the uppermost and lowermost spray nozzles is less than the height of the heat exchange tube.

[0010] Preferably, it also includes an exhaust port, which is located on the top surface of the insulation tank and has the same central axis as the central axis of the insulation tank.

[0011] Preferably, it also includes a vent pipe connected to the side wall of the insulation tank, the vent pipe being connected to a solenoid valve, and a pressure detection component being installed inside the insulation tank, the pressure detection component being coupled to the solenoid valve.

[0012] Preferably, the air pressure detection component includes a pressure sensing controller and a heat-insulating airbag wrapped around its outside. The pressure sensing controller includes a pressure sensor and a controller coupled thereto, and the controller is coupled to a solenoid valve.

[0013] Preferably, the bottom of the insulated tank is connected to a bottom pipe that can be opened and closed.

[0014] This utility model has the following beneficial effects:

[0015] This invention enables water mist to be sprayed onto the hot heat exchange tube through the spray nozzle. The heat exchange tube comes into contact with the water mist immediately and generates heat exchange, causing the water mist to sublimate into water vapor. This allows water to be turned into water mist in the first place, avoiding slow sublimation due to contact with a large amount of water. This can accelerate the efficiency of steam generation and reduce preheating time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] 1. Insulated container; 2. Support legs; 3. Can lid; 4. Exhaust port; 5. Vent pipe; 6. Bottom pipe; 7. Heat exchange pipe; 8. Spray nozzle; 9. Insulating airbag; 10. Pressure sensor controller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] An electrically heated single-tank molten salt thermal storage and steam generation system, such as Figure 1As shown, the device includes an insulated tank 1, a heat exchange tube 7 arranged vertically therein, an exhaust port 4, and a vent pipe 5. The bottom of the insulated tank 1 is connected to a bottom pipe 6 that can be opened and closed. The bottom of the insulated tank 1 is fixedly connected to a support leg 2. The top surface of the insulated tank 1 is open and is closed by a tank cover 3. The exhaust port 4 is located on the top surface of the insulated tank 1, and its central axis is the same as the central axis of the insulated tank 1. The exhaust port 4 is specifically located on the tank cover 3. The vent pipe 5 is connected to the side wall of the insulated tank 1 and is connected to a solenoid valve. A pressure detection component is installed inside the insulated tank 1, and the pressure detection component is coupled to the solenoid valve.

[0021] like Figure 2 As shown, the air pressure detection component includes a pressure sensor controller 10 and a heat insulation airbag 9 wrapped around it. The pressure sensor controller 10 includes a pressure sensor and a controller coupled thereto. The controller is coupled to a solenoid valve. The heat insulation airbag 9 is filled with helium.

[0022] The heat exchange tube 7 is located at the central axis of the heat preservation tank 1, and several spray nozzles 8 are connected to the outer peripheral wall of the heat preservation tank 1. The central axis of the spray nozzles 8 passes through the central axis of the heat preservation tank 1. The spray nozzles 8 are used to spray water mist. The heat exchange tube 7 is spiral, and there is a gap between each turn of the heat exchange tube 7. The distance between the uppermost and lowermost spray nozzles 8 is less than the height of the heat exchange tube 7.

[0023] In practical applications, this invention, through its unique design, can efficiently and evenly spray water mist through the spray nozzle 8 onto the scalding heat exchange tube 7. This spraying method ensures that the water mist comes into contact with the heat exchange tube 7 immediately, thereby generating efficient heat exchange at the moment of contact. This process allows the water mist to quickly sublimate into water vapor, avoiding the slow sublimation problem that may occur when the water mist comes into contact with a large amount of water, greatly improving the efficiency of steam generation and significantly shortening the system's preheating time.

[0024] Furthermore, this invention specifically considers the extreme case of excessively high air pressure inside the insulation tank 1. In this situation, the heat insulation bladder 9 will be compressed, and the pressure sensor built into the heat insulation bladder 9 can sensitively detect this pressure change. After detecting the pressure change, the sensor will transmit a signal to the controller. Upon receiving the signal, the controller will immediately react, controlling the solenoid valve to open and releasing the excess gas causing the excessively high air pressure inside the insulation tank 1 through the vent pipe 5. This automatic adjustment process continues until the air pressure inside the insulation tank 1 returns to a stable state. When the air pressure reaches a safe level, the solenoid valve will automatically close, ensuring the safe and stable operation of the system.

[0025] By adopting this invention, users can eliminate the long waiting time required for traditional heating and preheating of the water body. Users simply need to periodically spray water mist to maintain contact with the heat exchange tube 7, effectively reducing the time cost during steam generation. This design not only improves efficiency but also reduces energy consumption, making it of significant practical value for applications requiring rapid steam generation, such as industrial production, food processing, and medical sterilization.

[0026] Furthermore, this invention features a high degree of automation. Sensors automatically monitor and regulate gas pressure, ensuring ease of operation and safety. Users can achieve efficient steam generation without complex operations or frequent maintenance. This design philosophy reflects the pursuit of human-centered design in modern industrial design, providing users with a highly efficient and economical steam generation solution.

[0027] In summary, this utility model, with its unique design and superior performance, has significant advantages in improving steam generation efficiency, reducing energy consumption, and simplifying operation procedures. Its application can not only enhance the production efficiency of related industries but also provide users with a safer and more convenient user experience, possessing broad market application prospects. Through this utility model, users can more flexibly control the steam generation process to meet the needs of different application scenarios, while reducing environmental impact, aligning with modern society's pursuit of green, environmentally friendly, and efficient energy utilization.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electrically heated single-tank molten salt thermal storage and steam generation system, characterized in that, It includes a heat exchange tube (7) arranged vertically therein, the heat exchange tube (7) is located at the central axis of the heat exchange tube (1), and a number of spray nozzles (8) are connected to the outer peripheral wall of the heat exchange tube (1). The central axis of the number of spray nozzles (8) passes through the central axis of the heat exchange tube (1), and the spray nozzles (8) are used to spray water mist.

2. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 1, characterized in that, The heat exchange tube (7) is spiral in shape, and there is a gap between each turn of the heat exchange tube (7).

3. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 1, characterized in that, The distance between the uppermost and lowermost spray nozzles (8) is less than the height of the heat exchange tube (7).

4. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 1, characterized in that, It also includes an exhaust port (4), which is located on the top surface of the heat preservation tank (1) and its central axis is the same as the central axis of the heat preservation tank (1).

5. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 1, characterized in that, It also includes a vent pipe (5), which is connected to the side wall of the heat preservation tank (1). The vent pipe (5) is connected to a solenoid valve. The heat preservation tank (1) is equipped with a pressure detection component, which is coupled to the solenoid valve.

6. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 5, characterized in that, The air pressure detection component includes a pressure sensor controller (10) and a heat insulation airbag (9) wrapped around its outside. The pressure sensor controller (10) includes a pressure sensor and a controller coupled thereto, which is coupled to a solenoid valve.

7. The electrically heated single-tank molten salt thermal storage and steam generation system according to claim 1, characterized in that, The bottom of the insulated tank (1) is connected to a bottom pipe (6) that can be opened and closed.

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