Molten salt heating device with heat storage and energy storage functions

Abstract

The utility model discloses a fused salt heating device with heat and energy storage, which comprises a tank body, a fused salt heater, an inlet fused salt distributor, an outlet fused salt distributor, a liquid inlet pipe, a liquid outlet pipe and a plurality of heat exchange coil pipes, the liquid inlet pipe and the liquid outlet pipe are respectively arranged on the tank body, two ends of the heat exchange coil pipe are respectively connected with the liquid inlet pipe and the liquid outlet pipe, the heat exchange coil pipe is positioned between the inlet fused salt distributor and the outlet fused salt distributor, and the inlet fused salt distributor and the outlet fused salt distributor are both connected with the fused salt heater. The device has the following beneficial effects that the molten salt can be uniformly distributed at each part in the tank body, and the temperature difference of the molten salt at each part in the same horizontal plane is extremely small.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric heating equipment especially relates to a molten salt heating device with heat storage and energy storage. BACKGROUND

[0002] At present, using molten salt to store energy is a common energy storage scheme, and patent announcement document CN117739726B discloses a scheme of using molten salt and heat exchange medium (water) to exchange heat and store energy, in which the heat exchange pipe is used to realize heat exchange between molten salt and water, but in this heat exchange and energy storage scheme, molten salt is transported to the top end through the pipe, and then flows downward under the action of gravity to contact the pipeline, thereby heating the steam in the pipeline, but this device relies on the gravity of molten salt to flow downward, so the distribution of molten salt in the device is uneven. SUMMARY

[0003] The utility model discloses a molten salt heating device with heat storage and energy storage can guarantee that molten salt is evenly distributed in the tank, and the temperature difference of molten salt in the same horizontal plane is very small.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A molten salt heating device with heat storage and energy storage, comprising a tank, a molten salt heater, an inlet molten salt distributor, an outlet molten salt distributor, an inlet pipe, an outlet pipe and a plurality of heat exchange coils, the inlet molten salt distributor and the outlet molten salt distributor are arranged in the tank, the inlet pipe and the outlet pipe are arranged on the tank, the two ends of the heat exchange coil are connected to the inlet pipe and the outlet pipe respectively, the heat exchange coil is located between the inlet molten salt distributor and the outlet molten salt distributor, and the inlet molten salt distributor and the outlet molten salt distributor are connected to the molten salt heater.

[0006] In the device, the inlet molten salt distributor and the outlet molten salt distributor are connected to the molten salt heater through molten salt pipes, the molten salt heater transports the heated molten salt into the molten salt distributor through the molten salt pipes, the molten salt distributor uniformly sprays and distributes the molten salt into the tank through spraying, the molten salt flows in the tank and contacts the heat exchange coil, and finally enters the outlet molten salt distributor, and the molten salt in the outlet molten salt distributor is transported back to the molten salt heater through the molten salt pipes.

[0007] In the device, the liquid (including but not limited to water) enters the heat exchange coil through the inlet pipe, the liquid is heated by the molten salt after entering the heat exchange coil, and the liquid may still be liquid or may become gas when it exits through the outlet pipe.

[0008] The liquid and the molten salt in the device are in a flowing state for heat exchange, so that the molten salt and the liquid can be fully contacted for heat exchange, the heat exchange is more sufficient, and the heat exchange efficiency is high.

[0009] Specifically, a plurality of nozzles are arranged on the inlet molten salt distributor, all the nozzles are located in the same plane, and a plurality of nozzles are arranged on the same nozzle and are directed in different directions.

[0010] By means of the nozzles with a plurality of nozzles and the nozzles located in the same plane, the molten salt can be substantially located in the same plane when leaving the nozzles and uniformly sprayed in all directions, so that the molten salt is uniformly distributed in the tank, and the temperature difference of the molten salt in the same horizontal plane is very small.

[0011] Specifically, an electromagnetic valve is arranged on the molten salt pipeline, and an electromagnetic valve is arranged on the inlet pipe and the outlet pipe.

[0012] In the device, the molten salt after heating can be stored in the tank to realize energy storage.

[0013] Optionally, the heat exchange coil comprises a first heat exchange coil group, a second heat exchange coil group and a third heat exchange coil group, two ends of the second heat exchange coil group are directly or indirectly connected with the first heat exchange coil group or the third heat exchange coil group, the first heat exchange coil group is connected with the outlet pipe, and the third heat exchange coil group is connected with the inlet pipe.

[0014] It also includes a first auxiliary connecting pipe and a second auxiliary connecting pipe, the first heat exchange coil group and the second heat exchange coil group are connected through the first auxiliary connecting pipe, the second heat exchange coil group and the third heat exchange coil group are connected through the second auxiliary connecting pipe, the liquid in the third heat exchange coil group first enters the second auxiliary connecting pipe, then enters the second heat exchange coil group, then enters the first auxiliary connecting pipe, and finally enters the first heat exchange coil group, the second heat exchange coil group is located between the first heat exchange coil group and the second heat exchange coil group, the molten salt leaving the inlet molten salt distributor first contacts the first heat exchange coil group, then contacts the second heat exchange coil group, and finally contacts the third heat exchange coil group, the molten salt falls from top to bottom in the tank, and the liquid flows in a curved spiral shape from bottom to top in the third heat exchange coil group to the first heat exchange coil.

[0015] Optionally, the second heat exchange coil group is located between the first heat exchange coil group and the third heat exchange coil group.

[0016] Optionally, it also includes a molten salt circulating pump, two ends of the molten salt circulating pump are connected with the outlet molten salt distributor and the molten salt heater respectively.

[0017] The function of the molten salt circulating pump is to transport the molten salt in the outlet molten salt distributor back to the molten salt heater.

[0018] Optionally, the heat exchange coil further comprises a spoiler, which is arranged in the heat exchange coil.

[0019] The spoiler is arranged on the third heat exchange coil assembly and is arranged on the side close to the liquid inlet pipe.

[0020] Optionally, the heat exchange coil further comprises a water supply pipe, which is connected with the liquid inlet pipe.

[0021] Optionally, the heat exchange coil further comprises a deaerator and a reverse osmosis water processor, which are connected with the water supply pipe.

[0022] The deaerator and the reverse osmosis water processor are used to remove oxygen and impurities from the water entering the heat exchange coil.

[0023] Optionally, the water supply pipe is provided with a plunger pump.

[0024] The plunger pump is used to pump the liquid in the water supply pipe to the liquid inlet pipe.

[0025] The beneficial effects of the heat exchange coil are as follows: the molten salt is evenly distributed in the tank, and the temperature difference of the molten salt in the same horizontal plane is very small. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0027] Figure 1 is a structural schematic diagram of a molten salt heating device with heat storage and energy storage;

[0028] Figure 2 is a schematic diagram of the position of the inlet molten salt distributor in the tank;

[0029] Figure 3 is a schematic diagram of the position of the inlet molten salt distributor and the outlet molten salt distributor;

[0030] Figure 4 is Figure 3 is an enlarged schematic diagram of A in

[0031] The reference signs in the drawings are as follows: 1, molten salt heater; 2, molten salt circulating pump; 3, inlet molten salt distributor; 4, outlet molten salt distributor; 5, plunger pump; 6, water supply pipe; 7, resolving deaerator; 8, reverse osmosis water processor; 9, tank body; 10, liquid inlet pipe; 11, liquid outlet pipe; 12, first heat exchange coil group; 13, second heat exchange coil group; 14, third heat exchange coil group; 15, first auxiliary connecting pipe; 16, second auxiliary connecting pipe; 17, nozzle; 1701, nozzle opening. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purpose, features and advantages of the present application more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and equipment known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] As shown in the drawings Figure 1 As shown in the drawings Figure 4 As shown in the drawings, a molten salt heating device with heat storage and energy storage includes a tank body 9, a molten salt heater 1, an inlet molten salt distributor 3, an outlet molten salt distributor 4, a liquid inlet pipe 10, a liquid outlet pipe 11 and a plurality of heat exchange coils, the inlet molten salt distributor 3 and the outlet molten salt distributor 4 are arranged in the tank body 9, the liquid inlet pipe 10 and the liquid outlet pipe 11 are arranged on the tank body 9, the two ends of the heat exchange coil are connected with the liquid inlet pipe 10 and the liquid outlet pipe 11 respectively, the heat exchange coil is located between the inlet molten salt distributor 3 and the outlet molten salt distributor 4, and the inlet molten salt distributor 3 and the outlet molten salt distributor 4 are connected with the molten salt heater 1.

[0036] Specifically, in this device, both the inlet molten salt distributor 3 and the outlet molten salt distributor 4 are connected to the molten salt heater 1 through molten salt pipelines. First, the molten salt heater 1 heats the molten salt and then transports it into the molten salt distributor through the molten salt pipeline. The molten salt distributor then evenly sprays and distributes the molten salt into the tank 9. After entering the tank 9, the molten salt flows within the tank 9 and comes into contact with the heat exchange coil. Finally, when it reaches the outlet molten salt distributor 4, it enters the outlet molten salt distributor 4. The molten salt from the outlet molten salt distributor 4 is then transported back to the molten salt heater 1 through the molten salt pipeline.

[0037] In this device, liquid (including but not limited to water) enters the heat exchange coil through the inlet pipe 10. After entering the heat exchange coil, the liquid is heated by molten salt. When it leaves through the outlet pipe 11, the liquid may still be a liquid or it may turn into a gas.

[0038] In this device, both the liquid and the molten salt are in a flowing state for heat exchange. This allows the molten salt and the liquid to come into full contact for heat exchange, resulting in more thorough heat exchange and higher heat exchange efficiency.

[0039] Specifically, in this device, the inlet molten salt distributor 3 is equipped with multiple nozzles 17, all of which are located in the same plane, and each nozzle 17 has multiple nozzles 1701 facing different directions.

[0040] By using a nozzle 17 with multiple nozzles 1701 located in the same plane, the molten salt can be sprayed evenly in all directions when it leaves the nozzle 17, ensuring that the molten salt is evenly distributed throughout the tank 9 and that the temperature difference of the molten salt in different places on the same horizontal plane is minimal.

[0041] Specifically, in this device, a solenoid valve is installed on the molten salt pipeline, and solenoid valves are also installed on the inlet pipe 10 and the outlet pipe 11.

[0042] In this device, heated molten salt can be stored in tank 9 to achieve energy storage.

[0043] As attached Figure 1 ~Appendix Figure 4 As shown, the heat exchange coil includes a first heat exchange coil group 12, a second heat exchange coil group 13, and a third heat exchange coil group 14. The two ends of the second heat exchange coil group 13 are directly or indirectly connected to the first heat exchange coil group 12 or the third heat exchange coil group 14, respectively. The first heat exchange coil group 12 is connected to the liquid outlet pipe 11, and the third heat exchange coil group 14 is connected to the liquid inlet pipe 10.

[0044] Also included are a first auxiliary connecting pipe 15 and a second auxiliary connecting pipe 16, the first heat exchange coil group 12 and the second heat exchange coil group 13 are connected through the first auxiliary connecting pipe 15, the second heat exchange coil group 13 and the third heat exchange coil group 14 are connected through the second auxiliary connecting pipe 16, the liquid in the third heat exchange coil group 14 first enters the second auxiliary connecting pipe 16, then enters the second heat exchange coil group 13, then enters the first auxiliary connecting pipe 15, and finally enters the first heat exchange coil group 12, the second heat exchange coil group 13 is located between the first heat exchange coil group 12 and the second heat exchange coil group 13, the molten salt leaving the inlet molten salt distributor 3 first contacts the first heat exchange coil group 12, then contacts the second heat exchange coil group 13, and finally contacts the third heat exchange coil group 14, the molten salt falls from top to bottom in the tank 9, and the liquid flows in a curved spiral shape from bottom to top in the tank 9 from the third heat exchange coil group 14 to the first heat exchange coil.

[0045] As shown in the accompanying drawings, the second heat exchange coil group 13 is located between the first heat exchange coil group 12 and the third heat exchange coil group 14 Figure 1 ~As shown in the accompanying drawings, the second heat exchange coil group 13 is located between the first heat exchange coil group 12 and the third heat exchange coil group 14 Figure 4 As shown in the accompanying drawings, the second heat exchange coil group 13 is located between the first heat exchange coil group 12 and the third heat exchange coil group 14

[0046] Optionally, a molten salt circulating pump 2 is also included, two ends of the molten salt circulating pump 2 are connected with the outlet molten salt distributor 4 and the molten salt heater 1 respectively.

[0047] The molten salt circulating pump 2 functions to transport the molten salt in the outlet molten salt distributor 4 back to the molten salt heater 1.

[0048] As shown in the accompanying drawings, a baffle is also included, the baffle is arranged in the heat exchange coil. Figure 1 Figure 4 As shown in the accompanying drawings, a baffle is also included, the baffle is arranged in the heat exchange coil.

[0049] The specific baffle is located in the third heat exchange coil group 14 and is located on the side close to the liquid inlet pipe 10, the baffle functions to change the originally linear flow direction of the liquid into a spiral flow direction, increases the residence time of the liquid in the heat exchange coil, and thus enables sufficient heat exchange between the liquid and the baffle.

[0050] As shown in the accompanying drawings, a water supply pipe 6 is also included, the water supply pipe 6 is connected with the liquid inlet pipe 10. Figure 1 Figure 4 As shown in the accompanying drawings, a water supply pipe 6 is also included, the water supply pipe 6 is connected with the liquid inlet pipe 10.

[0051] As shown in the accompanying drawings, a water supply pipe 6 is also included, the water supply pipe 6 is connected with the liquid inlet pipe 10. Figure 1 Figure 4 As shown in the accompanying drawings, a water supply pipe 6 is also included, the water supply pipe 6 is connected with the liquid inlet pipe 10.

[0052] The functions of the resolving deaerator 7 and the reverse osmosis water processor 8 are to deaerate and remove impurities from the water entering the heat exchange coil.

[0053] As shown in the accompanying drawings, a water supply pipe 6 is also included, the water supply pipe 6 is connected with the liquid inlet pipe 10.​​​Figure 1 Figure 4 As shown in the figure, the water supply pipe 6 is provided with a plunger pump 5.

[0054] The plunger pump 5 pumps the liquid in the water supply pipe 6 to the liquid inlet pipe 10.

[0055] The specific spoiler is located in the third heat exchange coil group 14, and is located on the side close to the liquid inlet pipe 10. The function of the spoiler is to change the originally linear flow of the liquid into a spiral flow, increase the residence time of the liquid in the heat exchange coil, so that the liquid and the spoiler can fully exchange heat. The specific spoiler can be selected from the spoiler shown in the patent announcement document CN202002543U.

[0056] The above-mentioned embodiments only express part of the embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for those skilled in the art, the technical solutions recorded in the above-mentioned embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.​

Claims

1. A molten salt heating device with heat accumulation and energy storage, characterized in that, The application relates to a molten salt heat exchanger, which comprises a tank body, a molten salt heater, an inlet molten salt distributor, an outlet molten salt distributor, an inlet liquid pipe, an outlet liquid pipe and a plurality of heat exchange coils, wherein the inlet molten salt distributor and the outlet molten salt distributor are arranged in the tank body, the inlet liquid pipe and the outlet liquid pipe are arranged on the tank body, the two ends of the heat exchange coils are connected with the inlet liquid pipe and the outlet liquid pipe respectively, the heat exchange coils are located between the inlet molten salt distributor and the outlet molten salt distributor, the inlet molten salt distributor and the outlet molten salt distributor are connected with the molten salt heater, a plurality of nozzles are arranged on the inlet molten salt distributor, all the nozzles are located in the same plane, and a plurality of nozzles are arranged on the same nozzle and face different directions.

2. The molten salt heating device with heat accumulation and energy storage according to claim 1, characterized in that, The heat exchange coils comprise a first heat exchange coil group, a second heat exchange coil group and a third heat exchange coil group, the two ends of the second heat exchange coil group are directly or indirectly connected with the first heat exchange coil group or the third heat exchange coil group, the first heat exchange coil group is connected with the outlet liquid pipe, and the third heat exchange coil group is connected with the inlet liquid pipe.

3. The molten salt heating device with heat accumulation and energy storage according to claim 2, characterized in that, The second heat exchange coil group is located between the first heat exchange coil group and the third heat exchange coil group.

4. The molten salt heating device with heat accumulation and energy storage according to claim 1, characterized in that, The application further comprises a molten salt circulating pump, the two ends of the molten salt circulating pump are connected with the outlet molten salt distributor and the molten salt heater respectively.

5. The molten salt heating device with heat accumulation and energy storage according to claim 1, characterized in that, The application further comprises a spoiler, which is arranged in the heat exchange coil.

6. The molten salt heating device with heat accumulation and energy storage according to claim 1, characterized in that, The application further comprises a water supply pipe, which is connected with the inlet liquid pipe.

7. The molten salt heating device with heat accumulation and energy storage according to claim 6, characterized in that, The application further comprises a resolving deoxidizer and a reverse osmosis water processor, which are connected with the water supply pipe.

8. The molten salt heating device with heat accumulation and energy storage according to claim 6, characterized in that, A plunger pump is arranged on the water supply pipe.

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