Heat energy storage type steam generator

Abstract

The utility model relates to a heat energy storage type steam generator which comprises a tank body and a molten salt bin arranged in the tank body, the molten salt bin is arranged in the tank body, the molten salt bin is filled with molten salt, and an electrical bar is arranged in the molten salt bin; a steam generation bin is arranged in the molten salt bin, the steam generation bin absorbs heat from the molten salt bin, and a spraying part is arranged in the steam generation bin; and a heat insulation sleeve is arranged outside the tank body. A corresponding steam generator is designed with molten salt as an energy storage medium, the whole steam generator adopts a tank type structure, the circulation process of the molten salt is completed in a tank, the heat absorption process and the heat release process of the molten salt are completed in the circulation process, the heat absorption process is achieved in an electric heating mode, and water is heated to generate steam in the process; and the energy storage capacity of the molten salt can also ensure the generation of steam under the condition of power failure.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, specifically a thermal energy storage type steam generator. Background Technology

[0002] A steam generator is a device that uses the heat energy of fuel or other energy sources to heat water into steam. Early steam generators mainly used fuel as the source of heat energy. However, with increasingly stringent environmental protection requirements, the source of heat energy for steam generators has gradually been replaced by electricity. By converting electrical energy into heat energy as the energy source for steam generators, electricity is more environmentally friendly than combustion energy.

[0003] In actual use, electricity consumption has peak and off-peak periods, and the costs required at different times are different. In order to better control costs, it is possible to store electrical energy during off-peak periods and use the stored electrical energy during peak periods. This can save costs to a certain extent. However, the cost of electrical energy storage devices is relatively high, and its feasibility from an economic perspective is questionable. If there are better energy storage methods, the application of steam generators will be greatly improved. Summary of the Invention

[0004] This invention relates to a thermal energy storage type steam generator. It uses molten salt as the energy storage medium and is designed with a tank structure. The circulation process of the molten salt is completed inside the tank. During the circulation process, the molten salt completes the heat absorption and release process. The heat absorption process is achieved by electric heating. During the process, water is heated to generate steam. The energy storage capacity of the molten salt can ensure the generation of steam even in the event of a power outage.

[0005] The present invention adopts the following technical solution:

[0006] A thermal energy storage type steam generator includes a tank and a molten salt chamber disposed inside the tank. The molten salt chamber is filled with molten salt and is equipped with an electric heating rod. A steam generating chamber is disposed inside the molten salt chamber, which absorbs heat from the molten salt chamber and is equipped with a spray section. An insulation sleeve is provided on the outside of the tank.

[0007] The tank body is equipped with an inner tank, and the distance between the inner tank and the tank body is kept constant. The tank body and the inner tank are connected by evenly distributed support plates. A cylindrical tube running vertically through the center of the inner tank is provided. The gap between the inner tank and the tank body and the space inside the cylindrical tube form the molten salt chamber, which is filled with molten salt.

[0008] The annular area formed between the outer wall of the cylinder and the inner wall of the inner tank is the steam generating chamber, and the top of the steam generating chamber is provided with a steam outlet that penetrates to the outside of the tank body and the insulation sleeve.

[0009] The spray unit includes a spray plate and a pump. The spray plate is located at the top of the steam generating chamber. The lower part of the spray plate is provided with a water inlet pipe extending downward to the outside of the bottom of the tank. The bottom of the steam generating chamber is provided with a water outlet pipe extending downward to the outside of the bottom of the tank. The water inlet pipe and the water outlet pipe are connected by a pump located outside the tank. The pump is also provided with a water replenishment pipe.

[0010] Furthermore, the steam generating chamber is equipped with heat dissipation pipes, and multiple sets of heat dissipation pipes are evenly distributed within the steam generating chamber, with the heat dissipation pipes corresponding to the annular area below the spray plate.

[0011] The heat dissipation pipe connects the area between the inner tank and the tank body on both sides, as well as the area inside the cylinder. The cylinder is equipped with a conveying screw. The rotation of the conveying screw transports the molten salt inside the cylinder upward and into the area between the inner tank and the tank body from the top of the inner tank.

[0012] Furthermore, the heat dissipation pipe has a herringbone structure, and the heat dissipation pipe has multiple layers evenly distributed in the steam generation chamber, with multiple heat dissipation pipes evenly distributed in each layer; the heat dissipation pipes of adjacent layers are arranged in a staggered manner in the vertical direction.

[0013] The device employing the above-mentioned technical solution has the following beneficial effects:

[0014] The device adopts an internal circulation structure, which can save overall space and cost in actual use. On the other hand, the internal circulation structure can minimize heat loss and maximize heat utilization.

[0015] The equipment uses electric heating rods to heat molten salt, which then circulates to dissipate heat and heat water to generate steam. Throughout the process, there is no need to replenish the molten salt with energy separately. During peak periods, it can be directly switched to the mode of generating steam through molten salt heat dissipation, achieving a seamless connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a partial sectional view of the present invention.

[0019] Figure 4 This is a schematic diagram of an electric heating rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the following embodiments are only one or more manifestations of the present invention and are not a complete limitation on the invention content recorded in this application. Any improvements made based on the invention content or technical solution recorded in this application that are known to those skilled in the art should fall within the scope of protection claimed in this application.

[0021] Furthermore, the descriptions of directions such as up, down, left, right, front, and back presented in the specific embodiments are merely for the purpose of describing the technical solutions and are not absolute limitations unless otherwise stated.

[0022] like Figures 1-4 The diagram shows a thermal energy storage type steam generator, which includes a tank body 1 and a molten salt chamber 2 disposed inside the tank body 1. The molten salt chamber 2 is located inside the tank body 1 and is filled with molten salt. The molten salt chamber 2 is equipped with an electric heating rod 3. The molten salt chamber 2 is equipped with a steam generating chamber 4, which absorbs heat from the molten salt chamber 2. The steam generating chamber 4 is equipped with a spray section 5. The tank body 1 is equipped with an insulation sleeve 6.

[0023] The tank body 1 is provided with an inner tank 7, and the distance between the inner tank 7 and the tank body 1 is consistent. The tank body 1 and the inner tank 7 are connected by evenly distributed support plates 8. A cylindrical tube 9 that runs vertically through the center of the inner tank 7 is provided. The gap between the inner tank 7 and the tank body 1 and the space inside the cylindrical tube 9 form the molten salt chamber 2, which is filled with molten salt.

[0024] The annular area formed between the outer wall of the cylinder 9 and the inner wall of the inner tank 7 is the steam generating chamber 4. The top of the steam generating chamber 4 is provided with a steam outlet 10 that penetrates to the outside of the tank body 1 and the insulation sleeve 6.

[0025] The spray unit 5 includes a spray plate 501 and a pump 502. The spray plate 501 is located at the top of the steam generating chamber 4. The lower part of the spray plate 501 is provided with a water inlet pipe 503 extending downward to the outside of the bottom of the tank body. The bottom of the steam generating chamber 4 is provided with a water outlet pipe 504 extending downward to the outside of the bottom of the tank body 1. The water inlet pipe 503 and the water outlet pipe 504 are connected by a pump 502 located outside the tank body 1. The pump 502 is also provided with a water replenishment pipe 505.

[0026] Furthermore, the steam generating chamber 4 is provided with heat dissipation pipes 11, and multiple sets of heat dissipation pipes 11 are evenly distributed in the steam generating chamber 4, with the heat dissipation pipes 11 corresponding to the annular area below the spray plate 501.

[0027] The two sides of the heat dissipation pipe 11 are respectively connected to the area between the inner tank 7 and the tank body 1 and the area inside the cylinder 9. The cylinder 9 is equipped with a conveying screw 12. The conveying screw 12 rotates to convey the molten salt inside the cylinder 9 upward and enter the area between the inner tank 7 and the tank body 1 from the top of the inner tank 7.

[0028] Furthermore, the heat dissipation pipe 11 has a herringbone structure, and the heat dissipation pipe 11 has multiple layers evenly distributed in the steam generation chamber 4, with multiple heat dissipation pipes evenly distributed in each layer; the heat dissipation pipes 11 of adjacent layers are arranged in a staggered manner in the vertical direction.

[0029] When this device is in use, molten salt is filled into the molten salt chamber. The heating rod heats the molten salt in the area between the inner tank and the tank body. The conveying screw conveys the molten salt in the cylinder upwards. Afterwards, when there is a material shortage in the area inside the cylinder, the external molten salt enters the cylinder through the heat dissipation pipe, heating the heat dissipation pipe. The water sprayed from the spray section passes through the heat dissipation pipe and is heated to generate steam.

[0030] Molten salt circulates within the molten salt chamber, undergoing a sequential process of heating and cooling. The herringbone and vertically staggered structures of the heat dissipation pipes ensure better contact evaporation as water passes through them during spraying.

[0031] The molten salt in this device is kept at a high temperature throughout the process, without the need for additional heating and energy storage. In the event of a power outage, the molten salt can be directly cooled, resulting in excellent performance.

Claims

1. A thermal energy storage type steam generator, characterized in that: It includes a tank body and a molten salt chamber located inside the tank body. The molten salt chamber is filled with molten salt and is equipped with an electric heating rod. A steam generating chamber is located inside the molten salt chamber, which absorbs heat from the molten salt chamber. The steam generating chamber is equipped with a spray unit. An insulation sleeve is provided on the outside of the tank body.

2. The thermal energy storage steam generator according to claim 1, characterized in that: The tank body is equipped with an inner tank, and the distance between the inner tank and the tank body is kept constant. The tank body and the inner tank are connected by evenly distributed support plates. A cylindrical tube running vertically through the center of the inner tank is provided. The gap between the inner tank and the tank body and the space inside the cylindrical tube form the molten salt chamber, which is filled with molten salt.

3. A thermal energy storage type steam generator according to claim 2, characterized in that: The annular area formed between the outer wall of the cylinder and the inner wall of the inner tank is the steam generating chamber, and the top of the steam generating chamber is provided with a steam outlet that penetrates to the outside of the tank body and the insulation sleeve.

4. A thermal energy storage type steam generator according to claim 3, characterized in that: The spray unit includes a spray plate and a pump. The spray plate is located at the top of the steam generating chamber. The lower part of the spray plate is provided with a water inlet pipe extending downward to the outside of the bottom of the tank. The bottom of the steam generating chamber is provided with a water outlet pipe extending downward to the outside of the bottom of the tank. The water inlet pipe and the water outlet pipe are connected by a pump located outside the tank. The pump is also provided with a water replenishment pipe.

5. A thermal energy storage type steam generator according to claim 4, characterized in that: The steam generating chamber is equipped with heat dissipation pipes, and multiple sets of heat dissipation pipes are evenly distributed in the steam generating chamber, with the heat dissipation pipes corresponding to the annular area below the spray plate.

6. A thermal energy storage type steam generator according to claim 5, characterized in that: The heat dissipation pipe connects the area between the inner tank and the tank body on both sides, as well as the area inside the cylinder. The cylinder is equipped with a conveying screw. The rotation of the conveying screw transports the molten salt inside the cylinder upward and into the area between the inner tank and the tank body from the top of the inner tank.

7. A thermal energy storage steam generator according to claim 6, characterized in that: The heat dissipation pipe has a herringbone structure, and the heat dissipation pipe has multiple layers evenly distributed in the steam generation chamber. Each layer has multiple heat dissipation pipes evenly distributed. The heat dissipation pipes of adjacent layers are arranged vertically in an alternating manner.

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